link no. 59 customer magazine spun yarn systems - Rieter
link no. 59 customer magazine spun yarn systems - Rieter
link no. 59 customer magazine spun yarn systems - Rieter
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The <strong>customer</strong> <strong>magazine</strong> of <strong>Rieter</strong> Spun Yarn Systems<br />
Vol. 24 / No . <strong>59</strong> . May 2012 / EN<br />
<strong>link</strong> 1<br />
/2012<br />
04 TRENDS & MARKETS <strong>Rieter</strong> – with full power for the textile world 06 PRODUCT NEWS<br />
Recovering good fibers from blowroom waste 14 New R 60 Rotor Spinning Machine –<br />
Tech<strong>no</strong>logical Progress 28 PARTS Precise Spindle Monitoring with ISM
2 LINK <strong>59</strong> . 1 /2012<br />
CONTENTS 03 EDITORIAL<br />
Ready for the Future<br />
Cover:<br />
The new R 60 rotor spinning machine<br />
proves its benefits in practice.<br />
Publisher:<br />
<strong>Rieter</strong> Spun Yarn Systems<br />
Editor-in-chief:<br />
Marketing Spun Yarn Systems<br />
Copyright:<br />
© 2012 Maschinenfabrik <strong>Rieter</strong> AG,<br />
Klosterstrasse 20, CH-8406 Winterthur,<br />
www.rieter.com, rieter-<strong>link</strong>@rieter.com<br />
Reprints permitted, subject to prior approval;<br />
specimen copies requested.<br />
Design and production:<br />
Marketing <strong>Rieter</strong> CZ s.r.o., P. Bielik<br />
TRENDS & MARKETS<br />
04 <strong>Rieter</strong> – with full power for the textile world<br />
Erwin Stoller, President of the Board of Directors<br />
and Executive Chairman of <strong>Rieter</strong>, comments on the<br />
strategic reorientation of the Group and the resulting<br />
benefits for the <strong>customer</strong>s.<br />
PRODUCT NEWS<br />
06 Recovering good fibers from blowroom waste<br />
With a recycling line, valuable good fibers can be<br />
recovered – sustainability that pays off.<br />
08 C 70 – Success through Cutting Edge Tech<strong>no</strong>logy<br />
11 Automation in Combing<br />
14 New R 60 Rotor Spinning Machine – Tech<strong>no</strong>logical<br />
Progress<br />
The new spinning box of the R 60 rotor spinning<br />
machine improves spinning stability and reduces<br />
energy consumption.<br />
16 Automation with <strong>Rieter</strong> SERVOtrail<br />
18 Profitable Ring Spinning has a Name:<br />
<strong>Rieter</strong> G 32<br />
TECHNOLOGY<br />
20 ComforJet® <strong>yarn</strong> convinces users<br />
21 4 spinning <strong>systems</strong> in the <strong>Rieter</strong> SpinCenter<br />
22 Processing of Indian Cotton<br />
PARTS<br />
28 Precise Spindle Monitoring with ISM<br />
The individual spindle monitoring ensures competitive<br />
advantages, also in retrofitting. It improves productivity<br />
and quality.<br />
29 In<strong>no</strong>vative Retrofits for Draw Frames<br />
RIETER INSIDE<br />
30 The Comfort of Competence – the video clip<br />
31 Presentation of the <strong>Rieter</strong> Award in Vietnam
Ready for the Future<br />
Recent months were characterized by great uncertainty, although the<br />
outlook was generally <strong>no</strong>t so bad. In this environment, companies that<br />
build on sustainability are particularly able to hold their ground. Sustainability<br />
<strong>no</strong>t only in the sense of environment protection but in the<br />
development of lasting competitive advantages.<br />
<strong>Rieter</strong> competence<br />
can be experienced at<br />
the ITMA Asia 2012 in<br />
Shanghai – Hall W 2<br />
Stand A 10 with all 4<br />
spinning tech<strong>no</strong>logies.<br />
Irrespective of whether the future looks rosy or uncertain,<br />
successful companies continuously work on<br />
improving their competitive situation.<br />
In <strong>yarn</strong> production, relatively few factors are decisive:<br />
productivity, material exploitation, energy consumption<br />
and <strong>yarn</strong> quality. If these are positively further<br />
developed and thereby the competitiveness sustainably<br />
improved, it is easier to ensure success.<br />
<strong>Rieter</strong> develops its products in this direction. In<br />
this edition of the Link, we are presenting several<br />
examples of how sustainable improvements can be<br />
achieved with new, in<strong>no</strong>vative products or with the<br />
retrofitting of existing machines.<br />
With a recycling line, valuable raw materials can be<br />
regained and material costs reduced.<br />
LINK <strong>59</strong> . 1 /2012<br />
EDITORIAL<br />
The new generation of the wide card sets new records<br />
in productivity, quality and energy-saving.<br />
Practical experience with the rotor spinning machine<br />
R 60, presented on the occasion of the ITMA 2011,<br />
substantiates the potential for softer <strong>yarn</strong>s, higher<br />
productivity and better quality – and that with a lower<br />
energy consumption.<br />
The customized <strong>Rieter</strong> automation between flyer and<br />
ring spinning machine lowers costs and increases safety.<br />
The same is achieved on the one hand with spindle<br />
monitoring, which is also worthwhile as a retrofit,<br />
and on the other hand with an upgrade for draw frames<br />
that improves the quality and operational safety.<br />
Over and above the product range, <strong>Rieter</strong> supports<br />
its <strong>customer</strong>s with comprehensive services. As an<br />
example for tech<strong>no</strong>logical competence, an article in<br />
this edition describes the findings of an extensive<br />
analysis on the subject of the processing of cotton<br />
with a high proportion of short fibers. With tests in<br />
the <strong>Rieter</strong> SpinCenter using all 4 spinning tech<strong>no</strong>logies,<br />
this can be understood “live”.<br />
For example, the support also includes the awarding<br />
of <strong>yarn</strong> licenses, active communication of the <strong>Rieter</strong><br />
<strong>yarn</strong>s and help with <strong>yarn</strong> marketing.<br />
The overall competence of <strong>Rieter</strong> that makes life easier<br />
for <strong>customer</strong>s and can guide them along the path<br />
to success can be experienced at the ITMA Asia 2012<br />
in Shanghai on the <strong>Rieter</strong> Stand No. A 10 in Hall W 2.<br />
Those who use <strong>Rieter</strong> competence simplify the way<br />
to achieving sustainable competitiveness.<br />
12-101 •<br />
Edda Walraf<br />
Head Tech<strong>no</strong>logy and Marketing<br />
Winterthur<br />
edda.walraf@rieter.com<br />
3
4 LINK <strong>59</strong> . 1 /2012<br />
TRENDS & MARKETS<br />
<strong>Rieter</strong> – with full power for<br />
the textile world<br />
A year ago, in April 2011, our company embarked on an historical course:<br />
the shareholders approved the proposal of the Board of Directors to<br />
split the <strong>Rieter</strong> Group and to operate the textile machine and automotive<br />
supply businesses as independent listed companies. <strong>Rieter</strong> has since<br />
become a branch-focused supplier of textile machines and tech<strong>no</strong>logy<br />
components for staple fiber spinning plants. We run the company in two<br />
business groups: Spun Yarn Systems (machinery business) and Premium<br />
Textile Components (components business). What strategic goals do we<br />
follow with the newly formed company and what benefits does this bring<br />
our <strong>customer</strong>s?<br />
<strong>Rieter</strong> invests in the expansion of production capacity in Changzhou, to be closer to the <strong>customer</strong>s in the important Chinese market.<br />
The separation of the <strong>Rieter</strong> Group was a huge<br />
strategic step for our company with its rich tradition.<br />
For the <strong>customer</strong>s and employees, however,<br />
it brought <strong>no</strong> revolutionary change. That was never<br />
our aim. Rather, we are pursuing a long-term oriented,<br />
evolutionary further development that benefits<br />
all our stakeholders.<br />
What has led us to initiate these changes? The focus<br />
on business with textile machines and tech<strong>no</strong>logy<br />
components brings <strong>Rieter</strong> a number of advantages.<br />
It allows us at a strategic level to more clearly position<br />
<strong>Rieter</strong> in the markets and to act more flexibly.<br />
This also applies to the capital market.
On the one hand, we are able to more precisely define<br />
our business model to the shareholders as a result of<br />
the branch focus. On the other hand, the new organizational<br />
structure with the two business groups Spun<br />
Yarn Systems and Premium Textile Components creates<br />
greater transparency.<br />
2 business groups for the clear orientation on both<br />
our <strong>customer</strong> segments<br />
Primarily, however, these changes benefit our <strong>customer</strong>s.<br />
We can strategically concentrate on one business<br />
area and thereby carry out our decision-making<br />
processes more quickly and thoroughly as well as specifically<br />
using our resources. With the focus of our<br />
company on the two business groups, Spun Yarn Systems<br />
and Premium Textile Components, we take full<br />
account of the differences between these two business<br />
spheres. The organizational in<strong>no</strong>vations reflect<br />
a development that we have actively promoted in recent<br />
years. Alongside our established business with<br />
textile machines under the <strong>Rieter</strong> trademark as well as<br />
the associated spare parts and service activities, we<br />
have systematically expanded the business with tech<strong>no</strong>logy<br />
components for staple fiber spinning. The business<br />
group Premium Textile Components, together<br />
with the strong trademarks Bräcker, Graf, Novibra and<br />
Suessen, is one of the worldwide biggest suppliers<br />
in this field. As an independent organizational unit,<br />
Premium Textile Components is largely independent<br />
from <strong>Rieter</strong>’s machine business, both strategically<br />
and financially. It serves <strong>no</strong>t only spinning plants but<br />
also machine manufacturers; one of them is <strong>Rieter</strong> itself.<br />
The positive development of demand in both our<br />
segments, the machine business and the component<br />
business, has shown us that we are on the right path<br />
with this orientation.<br />
Business expansion for the benefit of our <strong>customer</strong>s<br />
<strong>Rieter</strong> has a solid balance and the long-term financing<br />
of our projects is secured. We <strong>no</strong>w have the strategic<br />
flexibility and the financial strength to position our<br />
business for a continuing successful future. <strong>Rieter</strong> will<br />
continue to grow in the coming years with products<br />
for our <strong>customer</strong>s in markets in the traditional countries<br />
as well as in markets with the biggest growth in<br />
China and India.<br />
LINK <strong>59</strong> . 1 /2012<br />
TRENDS & MARKETS<br />
To achieve this, we have set ourselves 3 strategic<br />
goals:<br />
• We want to remain number 1 in the premium segment<br />
and in the middle segment to become at<br />
least number 2.<br />
• We want to expand our position in China and India.<br />
This also includes a specific product range for the<br />
growing domestic markets.<br />
• We want to close gaps in our product range, with<br />
our own in<strong>no</strong>vative force, but also by exploiting<br />
external opportunities for growth.<br />
Where do we stand today, when judged on these lines,<br />
and how was our start as a newly formed company?<br />
As far as the market environment was concerned, the<br />
business year 2011 was anything but easy. <strong>Rieter</strong>,<br />
however, performed well. With a solid financial basis<br />
and a strong market position, we intensified our investment<br />
activities in 2011 in order to give impetus<br />
to achieving our strategic goals. Both business groups<br />
expanded their production capacity in the big growth<br />
markets China and India, to become even closer to the<br />
<strong>customer</strong>s and to ensure delivery capability. With specific<br />
products, we were increasingly able to win <strong>customer</strong>s<br />
who produce <strong>yarn</strong>s for the domestic markets<br />
in both countries. Equally, we accelerated our investment<br />
activities and significantly increased investments<br />
in research and development.<br />
<strong>Rieter</strong> will continue the intensified investment activities<br />
in the business year 2012 and has already set<br />
aside substantial means – for the benefit of our <strong>customer</strong>s<br />
in both market segments, the machine business<br />
as well as the component business.<br />
12-102 •<br />
Erwin Stoller<br />
President of the Board of Directors<br />
and Executive Chairman<br />
5
6 LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Recovering good fibers from<br />
blowroom waste<br />
Good fibers can easily be recovered from blowroom waste with the<br />
<strong>Rieter</strong> Recycling Line. These raw material savings make a significant<br />
contribution to a spinning mill’s operating profits.<br />
Fig. 1 The recycling<br />
line can simply be<br />
added to the existing<br />
VARIOline.<br />
Blowroom / card waste<br />
To fiber separation<br />
From central extraction<br />
Option: press<br />
Processing blowroom waste in the <strong>Rieter</strong> Recycling<br />
Line can make an important contribution here. The<br />
basic idea is to recover long fibers from the waste and<br />
feed them back into the production line. Depending<br />
on the spinning process and the trash content of the<br />
cotton, the investment in the additional blowroom<br />
machinery pays for itself within a year.<br />
The spinning industry continually has to address the<br />
following challenges:<br />
• availability and cost of raw material<br />
• rising energy costs<br />
• availability and cost of personnel<br />
• financing and payback on investment<br />
The recycling line – from the <strong>systems</strong> supplier<br />
As a <strong>systems</strong> supplier for all four spinning tech<strong>no</strong>logies,<br />
<strong>Rieter</strong> offers individually tailored solutions to<br />
improve the eco<strong>no</strong>mics of a spinning mill. One example<br />
is the <strong>Rieter</strong> Recycling Line. This processes and<br />
separates the individually collected waste from the<br />
different machines in the <strong>Rieter</strong> VARIOline blowroom<br />
line and the cards. This always pays off – <strong>no</strong>t only<br />
when raw material is scarce and prices are therefore<br />
rising (Fig. 1).<br />
Treating cotton from blowroom waste<br />
The basic idea of treating blowroom waste is to recover<br />
long fibers from the waste. Spinning mill waste<br />
is subdivided into two categories for the spinning<br />
process:<br />
• recyclable waste (fiber length > 12.5 mm)<br />
• <strong>no</strong>n-recyclable waste (fiber length < 12.5 mm).<br />
The recyclable fibers can be fed back to the blowroom<br />
continuously or batchwise after recovery. These fibers<br />
can be used as raw material for coarse-count rotor<strong>spun</strong><br />
<strong>yarn</strong>s and for ring-<strong>spun</strong> <strong>yarn</strong>s in the medium count<br />
range.
WASTE COMPOSITION IN THE BLOWROOM, MEASURED WITH THE SHIRLEY<br />
ANALYZER<br />
Content [%]<br />
Trash content [%]<br />
300 000<br />
200 000<br />
100 000<br />
0<br />
Rotor-<strong>spun</strong> <strong>yarn</strong>, Ne 7-10, 1 200 kg/h,<br />
1 assortment, trash content ~3 %<br />
Fig. 2 Composition of blowroom waste.<br />
Carded ring-<strong>spun</strong> <strong>yarn</strong>, Ne 20-30, 1 200 kg/h,<br />
2 assortments, trash content ~8 %<br />
Blowroom waste<br />
Fiber content [%] Loss [%]<br />
COMPOSITION OF FIBER CONTENT IN BLOWROOM WASTE, MEASURED<br />
WITH THE ALMETER<br />
Content [%]<br />
Rotor-<strong>spun</strong> <strong>yarn</strong>, Ne 7-10, 1 200 kg/h,<br />
1 assortment, trash content ~3 %<br />
Fibers < 12.5 mm [%]<br />
Carded ring-<strong>spun</strong> <strong>yarn</strong>, Ne 20-30, 1 200 kg/h,<br />
2 assortments, trash content ~8 %<br />
Blowroom waste<br />
Fibers > 12.5 mm [%]<br />
Fig. 3 Composition of fiber content in blowroom waste.<br />
POTENTIAL SAVINGS – COTTON > 12.5 MM (WASTE: VARIOLINE)<br />
(24 H/D; 350 D/A; COTTON PRICE 2.10 USD/KG)<br />
USD p.a<br />
10,00<br />
8,00<br />
6,00<br />
4,00<br />
2,00<br />
0,00<br />
2,00<br />
1,50<br />
1,00<br />
0,50<br />
0,00<br />
Rotor-<strong>spun</strong> <strong>yarn</strong>, Ne 7-10, 1 200 kg/h,<br />
1 assortment, trash content ~3 %<br />
Fig. 4 Potential savings – cotton > 12.5 mm.<br />
Carded ring-<strong>spun</strong> <strong>yarn</strong>, Ne 20-30, 1 200 kg/h,<br />
2 assortments, trash content ~8 %<br />
Process<br />
Joachim Maier<br />
Dyrk Saaro<br />
LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Raw material savings<br />
Examples are given of raw material savings in two<br />
spinning processes:<br />
• rotor-<strong>spun</strong> <strong>yarn</strong> / carded cotton / Ne 7-10 / staple<br />
length 1" / 3 % trash content in the bale<br />
• ring-<strong>spun</strong> <strong>yarn</strong> / carded cotton / Ne 20-30 / staple<br />
length 1 1/8" / 8 % trash content in the bale<br />
The adjoining chart shows the expected raw material<br />
recovery compared to the aggregate waste from the<br />
blowroom line. In this example the composition of<br />
the blowroom waste is approx. 80 % trash and 20 %<br />
fibers (Fig. 2).<br />
The recyclable fiber content is between 75 and 80 %.<br />
These good fibers can be fed back into the production<br />
line (Fig. 3).<br />
Potential savings by a spinning mill<br />
The calculation of potential savings has been based<br />
on a cotton price of 2.10 USD/kg. When reducing<br />
costs by saving raw materials in this way it is quite<br />
possible under favorable market conditions for the investment<br />
to pay for itself within a short time. In this<br />
example, capital expenditure on the additional blowroom<br />
machinery for the recycling line amounts to<br />
approx. 170 000 USD. Even a relatively simple calculation<br />
produces an informative result. If the good<br />
fibers recovered during a spinning process for carded<br />
ring-<strong>spun</strong> <strong>yarn</strong>, for example, have a trash content<br />
of 8 %, the investment pays for itself within one year<br />
(Fig. 4). 12-103 •<br />
Senior Marketing Manager<br />
Winterthur<br />
joachim.maier@rieter.com<br />
Tech<strong>no</strong>loge Putzerei<br />
Winterthur<br />
dyrk.saaro@rieter.com<br />
7
8 LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
C 70 – Success through Cutting<br />
Edge Tech<strong>no</strong>logy<br />
With the foray into the application area of rotor and synthetic fibers,<br />
the operational field of the C 70 is complete. In terms of performance,<br />
quality and energy consumption it sets new standards.<br />
Fig. 1 Quicker and<br />
easier replacement of<br />
the inserts for variable<br />
trash removal.<br />
Since the market launch of the C 70 card in 2010 in<br />
qualitatively superior segments such as combed and<br />
carded ring <strong>yarn</strong>s, its operational range has been<br />
systematically extended. With the more than 600<br />
C 70 cards sold in the meantime, <strong>Rieter</strong> has sold totally<br />
more than 5 000 cards with the 1.5 m card tech<strong>no</strong>logy.<br />
Confirmation of the accuracy of the future-oriented<br />
1.5 m carding tech<strong>no</strong>logy was underlined by the fact<br />
that during the ITMA 2011 in Barcelona, <strong>no</strong> exhibitor<br />
showed a card more than 1 m wide.<br />
C 70 – the new standard<br />
Both in direct comparison with the latest card generation<br />
of other suppliers and with the latest version<br />
of the C 60 card, the C 70 has proved its position as<br />
performance leader.<br />
In a direct comparison using Viscose, the C 70 has<br />
clearly relegated its latest rivals to 2nd place. As regards<br />
production and quality, it was shown that the<br />
C 70 sets new standards. The <strong>yarn</strong> count of the <strong>spun</strong><br />
rotor <strong>yarn</strong>s was in the range Ne 30 – 50. The following<br />
results were achieved (Fig. 2):<br />
• At 20 % higher production, a 30 % improvement in<br />
quality was reached.<br />
• Both the evenness of the <strong>spun</strong> <strong>yarn</strong> and its<br />
strength were better than those of competitors.<br />
At one <strong>customer</strong> in Turkey, tech<strong>no</strong>logy trials were carried<br />
out with the latest version of the C 60 and a C 70<br />
in order to compare production performance and quality.<br />
The plant processes 100 % US cotton to knitting<br />
and weaving <strong>yarn</strong>s in a fineness range Ne 24 – 30. For<br />
the comparison trials, an OE <strong>yarn</strong> with a <strong>yarn</strong> count<br />
of Ne 30 was <strong>spun</strong> on the <strong>Rieter</strong> R 40 rotor spinning<br />
machine. Summarizing the testing period, it can be<br />
stated that:<br />
• the C 70 achieved a 25 % better quality at equal<br />
production,<br />
• with the production increase of +60 % the C 70<br />
reached the same quality values as the C 60.<br />
Success factors<br />
The key to this success can be found in a combination<br />
of various factors. On the one hand, the working<br />
width of 1.5 m provides the optimal basis for maximum<br />
performance. In combination with the high precision<br />
in the area of the carding gap and the maximal<br />
active carding area of all cards (32 flats in working<br />
position with a working width of 1.5 m), the C 70<br />
thereby becomes a benchmark.<br />
Optimal raw material exploitation as well as flexible<br />
adaptation to various raw materials is achieved by<br />
selective trash removal. It contains the following features:<br />
• Infinitely adjustable knife on the licker-in.<br />
• Q-package with 4 inserts for optimization of the<br />
extracted waste.<br />
• Infinitely adjustable flats speed that is directly<br />
entered at the controls.<br />
The IGS system (integrated grinding system) sharpens<br />
<strong>no</strong>t only the cylinder clothing but also the flats<br />
throughout their service life with intelligently distributed<br />
grinding cycles and thereby maintains the sliver<br />
quality at a high level. In addition, the durability of<br />
the clothings increases by up to 20 %.<br />
The modular construction permits quick adjustment<br />
to new raw materials and requirements. The replacement<br />
of the licker-in, flats and doffer clothing is<br />
time-consuming maintenance on conventional cards.<br />
The modular construction of the C 70 reduces these<br />
downtimes to previously unequalled minimal levels.<br />
All three modules can be even more easily replaced<br />
with prepared optional replacement models.
Eco<strong>no</strong>my Quality Flexibility<br />
1<br />
2<br />
High output in all applications due to large active<br />
carding area<br />
Excellent raw material utilization with variably adjustable<br />
knife at the licker-in and selective trash removal<br />
(pre- and post-carding areas)<br />
1<br />
3<br />
2<br />
2<br />
3<br />
Large active carding area with 32 flats in<br />
working position<br />
Carding gap precisely adjustable within<br />
close tolerances<br />
5<br />
1<br />
4<br />
2<br />
LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Modular construction facilitates rapid<br />
adaptation to raw material<br />
Shorter process with draw frame modules<br />
4 Low maintenance costs with long clothing service life<br />
due to IGS<br />
4 ICG – permanently sharp clothing 5 Choice between single and triple licker-in<br />
9
10 LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Fig. 2 Two applications<br />
in direct comparison<br />
with competitors illustrate<br />
the high productivity<br />
for equal quality<br />
and energy saving with<br />
the C 70 card.<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
C 70<br />
160<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
C 70<br />
140<br />
120<br />
+115 %<br />
65<br />
+20 %<br />
100<br />
Competitor<br />
Energy efficiency in carding has a name – C 70<br />
With its high production performance and the in<strong>no</strong>vative<br />
machine cross-section, the C 70 card attains<br />
the lowest energy consumption values per kilogram<br />
of produced card sliver. In comparison to wider cards<br />
with a conventional tech<strong>no</strong>logical cross-section, the<br />
C 70 impresses with its lower energy consumption in<br />
the range 15 – 25 %. The following direct field comparison<br />
confirms this statement.<br />
ROTOR YARN 100 % VISCOSE – C 70 COMPARED TO CONVENTIONAL<br />
1.3 M CARD<br />
Production [kg /h]<br />
0.18<br />
0.16<br />
0.14<br />
0.12<br />
0.10<br />
0.08<br />
0.06<br />
0.04<br />
0.02<br />
0.00<br />
-42 %<br />
0.091<br />
160<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0.157<br />
0<br />
-16 %<br />
128<br />
120<br />
100<br />
43 433<br />
80<br />
60<br />
40<br />
20<br />
0<br />
153<br />
Annual saving: 25 000 CHF<br />
COTTON – WASTE BLEND FOR ROTOR YARNS, C 70 COMPARED TO<br />
CONVENTIONAL 1 M CARD<br />
Production [kg/h]<br />
Energy consumption* [kWh/kg]<br />
Energy costs in 1 000 CHF / year*<br />
Competitor * based on 0.1 CHF/kWh<br />
Costs for an 800 kg line [1 000 CHF]<br />
<strong>59</strong>,5<br />
102,9<br />
Annual saving: 43 433 CHF<br />
* based on the same number of cards<br />
Example – Viscose application for rotor <strong>yarn</strong>s<br />
In this comparison, the cards were running with Viscose<br />
for OE <strong>yarn</strong>s. On the C 70, a 30 % better quality<br />
was achieved at a 20 % higher production rate.<br />
When considering the energy expenditure, the C 70<br />
was a class ahead. It required 16 % less energy. Converted<br />
to a year at a production rate of 1 200 kg/h,<br />
this corresponds to an annual saving of approx.<br />
25 000 CHF.<br />
Example – 1 m card with cotton / waste blend for<br />
open-end <strong>yarn</strong>s<br />
Various comparisons to 1 m cards showed an energy<br />
saving in the range of 30 – 45 % - a remarkable<br />
difference! This was documented by means of a field<br />
trial whereby the C 70 with a 42 % lower energy input<br />
achieved more than double the production with<br />
equal quality.<br />
Why is the C 70 more energy-efficient?<br />
The higher production performance of the C 70 positively<br />
affects the expended energy per kg card sliver,<br />
kW/kg. This alone, however, is <strong>no</strong>t the only reason.<br />
With the optimal, comparatively small cylinder diameter<br />
(816 mm), lower amounts are set in motion.<br />
The energy expenditure required to reach the<br />
production speed is consequently also lower. As a<br />
result, less energy must be applied to maintain the<br />
production speed.<br />
C 70 – tested worldwide<br />
Even prior to the Olympics 2012, the C 70 card was<br />
able to prove its effectiveness worldwide in hard<br />
Olympic comparison with more than 300 already operational<br />
cards. 12-104 •<br />
Gerald Steiner<br />
Head Product Management<br />
Blowroom / Cards<br />
Winterthur<br />
gerald.steiner@rieter.com
Automation in Combing<br />
More than 50 % market share worldwide proves it – the best <strong>yarn</strong> quality<br />
is achieved with a combing section from <strong>Rieter</strong>. What is the situation<br />
regarding increase in productivity and flexibility that automation in<br />
combing by <strong>Rieter</strong> has to offer?<br />
Fig. 1 Animation of<br />
the ROBOlap’s function<br />
principle. Simply scan<br />
with your smartphone<br />
http://bit.ly/KfH8BC<br />
It is quite possible to combine quality and production<br />
advantages in a <strong>Rieter</strong> combing plant and for<br />
just this reason an investment in a <strong>Rieter</strong> combing<br />
section is worthwhile. The ROBOlap option leads to<br />
increased productivity on the combing machine, reduces<br />
operator effort and improves the sliver quality.<br />
The new sliver delivery for cans with a diameter<br />
of 1 000 mm offers a decisive eco<strong>no</strong>mic advantage.<br />
In this connection, an equally large role is played by<br />
the reduction in the number of piecers on the autoleveler<br />
draw frame by using cans with a larger capacity.<br />
A lower number of sliver piecers leads to an<br />
increase in <strong>yarn</strong> quality and fulfils the requirements<br />
of the spinning plants that place value on quality.<br />
ROBOlap, an unrivalled system<br />
ROBOlap is an automatic batt piecing system. The<br />
operating principle is simple: the laps are placed on<br />
the lap rest by one of the <strong>customer</strong>-defined transport<br />
CONSTANT QUALITY THROUGH AUTOMATION<br />
Sliver without piecing, CVm = 3.34 %<br />
Sliver with manual piecing, CVm = 6.42 %<br />
Sliver with automatic piecing (ROBOlap), CVm = 4.11 %<br />
Fig. 2 Improvement of the CV% in the comber sliver due to automatic piecing with ROBOlap.<br />
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PRODUCT NEWS<br />
<strong>systems</strong> SERVOlap or SERVOtrolley. An optical sensor<br />
registers when one of the 8 laps is being drawn<br />
off. The rest of the 8 laps are automatically sucked<br />
off and disposed of. A pneumatic device draws the<br />
new batt end onto the machine and prepares it for<br />
the piecing process by evenly detaching the batt end<br />
(Fig. 1).<br />
Remarkable here is that the mean waste amount is<br />
practically halved by automatic piecing compared<br />
to manual piecing. With manual piecing, the operators<br />
often tend to pull off far too much of the batt. In<br />
addition to the increased amount of waste, manual<br />
piecings are less consistent than the automatic piecings.<br />
With ROBOlap, the machine synchronizes all<br />
feed movements and thereby achieves a piecer with<br />
a significantly better CV% than with manual piecing<br />
(Fig. 2). The empty tubes are subsequently re-fed to<br />
the transport system.<br />
Since its market launch, the ROBOlap batt piecing<br />
system has gained a greater market share and today<br />
can be found worldwide on more than 40 % of the<br />
combing machines sold by <strong>Rieter</strong> (Fig. 3).<br />
In the last 15 years, a shift in spinning plants from<br />
America and Europe in the direction of Asia has taken<br />
place. In the Asian markets, automation was for a<br />
long time of minimal importance. Optimizations and<br />
rationalizations, however, are <strong>no</strong>w also taking place<br />
in these markets. <strong>Rieter</strong> sees a clear trend towards<br />
automated combers equipped with ROBOlap.<br />
Fig. 3 Sales distribution of <strong>Rieter</strong> combers in manual and<br />
automatic machines with ROBOlap.<br />
Manual Combers ROBOlap Combers<br />
1997 - 2008 85 % 15 %<br />
2008 - 2010 70 % 30 %<br />
2011 60 % 40 %<br />
Compared to a comber without ROBOlap, a fullyequipped<br />
comber allows a 2 % higher degree of efficiency.<br />
This is due to the optimized lap changing and<br />
piecing processes which result in extremely short<br />
machine idle times (Fig. 4).<br />
11
12 LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Operating steps<br />
HIGHER COMBER EFFICIENCY<br />
Idle time [min]<br />
0<br />
2<br />
4<br />
6<br />
8<br />
10<br />
12<br />
14<br />
Idle time<br />
Average<br />
Manual piecing<br />
optimized<br />
Fig. 4 Productivity win through automatic piecing with ROBOlap.<br />
ROBOlap<br />
E 66 with E 16 E 76 (ROBOlap) with E 17<br />
guides 2 lap trolleys behind the comber guides 2 lap trolleys behind the<br />
comber<br />
detaching the batt and replacing the tubes fully-automatic<br />
tubes moved onto the lap trolley at the touch of<br />
a button<br />
full laps delivered from the trolley to the<br />
machine at the touch of a button<br />
Efficiency +2 %<br />
Time for lap change and piecing<br />
fully-automatic<br />
fully-automatic<br />
piece 8 laps fully-automatic<br />
start machine fully-automatic<br />
clean tubes and return to comber preparation fully-automatic<br />
Fig. 5 Comparison between manual and automatic combers with ROBOlap.<br />
ROBOlap and SERVOlap E 26, the fully-automatic<br />
solution<br />
ROBOlap and SERVOlap E 26 are undisputedly the<br />
best combination in the area of automation because<br />
both <strong>systems</strong> function without human intervention.<br />
The “overhead transport” takes place from the combing<br />
preparation up to the combing machines. All<br />
processes are conducted automatically and without<br />
external intervention: the transport of residual material<br />
from the tubes, the removal of the tubes from<br />
the machine, the placing of the new laps, the piecing<br />
process itself and the restart of the combers (Fig. 5).<br />
97<br />
96<br />
95<br />
94<br />
93<br />
92<br />
91<br />
90<br />
Efficiency [%]<br />
Only in the case of <strong>Rieter</strong> automation with SERVOlap<br />
are the empty tubes automatically cleaned and refed<br />
to the transport system – one of the many exclusive<br />
features for <strong>Rieter</strong> <strong>customer</strong>s.<br />
ROBOlap and SERVOtrolley E 17, a combination with<br />
manual transport<br />
An eco<strong>no</strong>mic combination is ROBOlap and SERVOtrolley<br />
E 17. In the past, only the fully-automatic feed with<br />
SERVOlap was available for combers equipped with<br />
ROBOlap. Today, however, it is possible to operate the<br />
combers equipped with an automatic piecing system<br />
with the SERVOtrolley type E 17.<br />
The difference to the SERVOlap can be found in the<br />
lap transport that can be manually carried out with<br />
the aid of a transport trolley, whereby 4 laps and<br />
tubes can always be transported. The loading process<br />
for the 4 laps onto the transport trolley is automatically<br />
executed. The loaded transport trolley is guided<br />
by the operator to the combing machine and precisely<br />
positioned by a guide rail. As soon as the two trolleys<br />
with 4 laps each reach their final position at the<br />
comber, the automatic lap change can begin.<br />
Mixed operation of manual and automatic combers<br />
Until recently, the extension of a manual combing section<br />
with automatic combing machines was undesirable<br />
due to the necessary investments for the transport<br />
system. The option to use the SERVOtrolley E 17 combined<br />
with an automatic comber <strong>no</strong>w makes the extension<br />
of an already existing manual combing section<br />
by individual combers equipped with ROBOlap attractive<br />
and eco<strong>no</strong>mic.<br />
A minimal change of the already available comber<br />
preparation E 30, E 32 or E 35 is sufficient to utilize<br />
the machine in a mixed operation with SERVOtrolley<br />
E 16 and E 17 (Fig. 6). The UNIlap or OMEGAlap is<br />
then in the position to recognize the respective trolley<br />
type for the lap feed and to thereby adjust the height<br />
of the lap delivery, as the manual combers have a different<br />
height to that of the automatic machines. This<br />
permits <strong>Rieter</strong> <strong>customer</strong>s to exploit the advantages of<br />
an automatic comber without having to renew the entire<br />
combing section.
Fig. 6 Lap change<br />
on the E 76 comber<br />
with ROBOlap and<br />
SERVOtrolley E 17.<br />
Fig. 7 Process optimization<br />
in the spinning<br />
plant by utilization of<br />
uniform cans with<br />
1 000 mm diameter.<br />
1 000 mm CANS<br />
Rationalizing cans with 1 000 mm diameter<br />
The new sliver delivery for 1 000 mm can diameter<br />
corresponds to the requirement for uniformity of the<br />
can sizes in the spinning plant and offers unchallenged<br />
benefits in productivity and quality. The change to<br />
cans with 1 000 mm diameter on the comber allows<br />
the use of uniform cans – from the card through to the<br />
feeding of the autoleveler draw frames (Fig. 7). These<br />
cans hold double the material quantity of the 600 mm<br />
cans so far in use. The frequency of the can change<br />
is thereby halved and the efficiency of the comber is<br />
slightly raised by approx. 0.3 %. The benefit is, how-<br />
LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
ever, substantially greater with the autoleveler draw<br />
frame where the number of piecers is halved due to<br />
the double quantity of material in the cans. The efficiency<br />
of the draw frame consequently increases by<br />
more than 1 % and this with a simultaneous quality<br />
improvement.<br />
With the presently available ROBOlap option in conjunction<br />
with a semi-automatic transport system and<br />
the new sliver delivery for cans with 1 000 mm diameter,<br />
productivity and quality in combing can be<br />
increased. 12-105 •<br />
Yvan Schwartz<br />
Head Product Management Combers<br />
Winterthur<br />
yvan.schwartz@rieter.com<br />
13
14 LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
New R 60 Rotor Spinning Machine<br />
– Tech<strong>no</strong>logical Progress<br />
The in<strong>no</strong>vative spinning tech<strong>no</strong>logy of the new automatic R 60 rotor<br />
spinning machine from <strong>Rieter</strong> ensures better, more uniform and softer<br />
<strong>yarn</strong>s. The R 60 sets new standards for speed, low energy consumption<br />
and high efficiency. At the ITMA 2011 in Barcelona, our <strong>customer</strong>s clearly<br />
recognized how easy, operationally reliable and clearly designed this<br />
rotor spinning machine is compared to other machines.<br />
Fig. 1 The new S 60<br />
spinning box has been<br />
tech<strong>no</strong>logically further<br />
developed. The open<br />
construction is advantageous<br />
for cool delivery<br />
<strong>no</strong>zzles, productivity<br />
and operation.<br />
High <strong>yarn</strong> quality is the basis for the success of<br />
a spinning plant<br />
The new S 60 spinning box of the R 60 features all<br />
the proven advantages of its predecessor the SC-R<br />
version and has been further improved.<br />
Noticeable is the absence of a delivery tube. The new<br />
TWISTunit of the R 60 unites delivery <strong>no</strong>zzle, TWISTstop<br />
and channel insert in one construction. The unit and<br />
its elements are very easy and quick to replace, even<br />
without tools.<br />
The new construction prevents fiber accumulations or<br />
spinning vacuum from changing the spinning conditions.<br />
The box <strong>no</strong> longer has any covers under which<br />
fibers can accumulate. The optimized spinning geometry<br />
reduces the spinning tension and improves the<br />
spinning stability. This can clearly be seen with critical<br />
applications such as soft-turned <strong>yarn</strong>s or with the<br />
increased use of short fibers such as comber <strong>no</strong>il, card<br />
and blowroom waste. Thanks to the “cool <strong>no</strong>zzle tech<strong>no</strong>logy”<br />
heat dissipation to the <strong>no</strong>zzle is good which<br />
leads to a cooler surface. This provides further potential<br />
for higher productivity with synthetic fibers and<br />
their blends.<br />
New spinning tech<strong>no</strong>logy for superior <strong>yarn</strong>s and<br />
lower energy consumption<br />
Several <strong>customer</strong>s could already experience the<br />
tech<strong>no</strong>logical benefits of the new spinning box in the<br />
form of better <strong>yarn</strong> strength and evenness. In direct<br />
comparison to the latest competitor models, the in<strong>no</strong>vative<br />
spinning tech<strong>no</strong>logy of the R 60 is already<br />
a step ahead by up to 0.75 cN/tex and by 20 % higher<br />
IPI values. In the example shown (Fig. 2) – Ne 17<br />
weaving <strong>yarn</strong> of 100 % cotton – this advantage in<br />
strength can be transformed into a productivity increase<br />
of 9 %. The originally required <strong>yarn</strong> strength<br />
can be achieved by a constant rotor speed with appropriately<br />
lower twist. This additionally results in a<br />
further reduction of the energy consumption per kg<br />
of <strong>yarn</strong> to an equivalent of 9 %.<br />
Savings with raw material<br />
Again the further developed <strong>Rieter</strong> spinning tech<strong>no</strong>logy<br />
proves its strength, particularly with a high proportion<br />
of short fibers or with a high trash content in<br />
the feed sliver. The adjustable bypass, the reduced<br />
spinning tension and the new automatic, individual<br />
centering of the exit <strong>no</strong>zzle and rotor improve the<br />
spinning stability. The mechanical rotor cleaning by<br />
the robot with the unique VARIOclean is effective<br />
with every piecing and doffing cycle. This ensures<br />
that the spinning position subsequently continues<br />
production at the highest quality level with thoroughly<br />
cleaned rotor grooves.
R 60 – Nm 28 / Ne 17, 100 % COTTON WEAVING YARN<br />
R 60<br />
3,6 4,0<br />
Twist factor<br />
[αe]<br />
Fig. 2 The improved<br />
spinning tech<strong>no</strong>logy of<br />
the R 60 brings significant<br />
benefits for quality and<br />
productivity.<br />
Competitor<br />
14,3 13,7<br />
Yarn strength<br />
[cN/tex]<br />
16<br />
Total<br />
IPI<br />
17<br />
180<br />
165<br />
Delivery speed<br />
[m/min]<br />
Piecing quality is particularly important with a high<br />
rate of <strong>yarn</strong> breakages<br />
The ends down rate when spinning with the R 60<br />
is reduced by lowered spinning tension. The 25 %<br />
quicker robot, in comparison to the R 40, can deal<br />
with a far greater number of ends down and maintain<br />
the high efficiency of the machine. The robots need<br />
only 20 seconds for the complete cycle including<br />
complete rotor cleaning and doffing. With the unique<br />
AEROpiecing® tech<strong>no</strong>logy, almost <strong>yarn</strong>-like piecings<br />
in mass and strength are achieved. Only this can prevent<br />
more piecings generating substantial costs in<br />
downstream processing.<br />
Faulty piecings create high costs<br />
A sample calculation shows the following: a typical<br />
Ne 12 denim weaving <strong>yarn</strong> contains around 0.5 piecings<br />
per kg of <strong>yarn</strong>. Just one <strong>yarn</strong> break in the weaving<br />
plant today costs – worldwide – approx. 2 EUR,<br />
as alongside the efficiency, the fabric quality is very<br />
quickly also influenced. Such faults in the fabric are<br />
paid for by the buyers with expensive compensation.<br />
Under these circumstances, with only a 1 % lower<br />
rate of faulty piecings in the weaving plant, already<br />
0.01 EUR per kg of <strong>yarn</strong> can be saved. This leads to<br />
significant savings or even better, to higher profits<br />
for the spinner.<br />
LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Central drive consumes less energy<br />
The modern concept of the R 60 was specifically optimized<br />
for low energy consumption. The greatest<br />
energy consumers of the rotor spinning machine are<br />
the drives for rotor, suction and opening rollers. For<br />
the rapidly turning rotors and opening rollers, optimized<br />
tangential belt drives have continued to prove<br />
energy saving. For the central suction the R 60 exhibits<br />
advantages, as the electronically-controlled<br />
vacuum combined with the automatic filter cleaning<br />
avoids unnecessary losses.<br />
The life cycle of the electronic components can be<br />
extended by specific heat dissipation. For instance,<br />
in the R 60 the drive inverters were concentrated in<br />
an area that is specifically cooled by in<strong>no</strong>vative heat<br />
dissipation.<br />
Measurements taken at <strong>customer</strong>s have, in comparison<br />
to competitive machine concepts, confirmed energy<br />
consumption at least 10 % lower.<br />
The longest machine offers flexibility with<br />
independent sides<br />
With up to 540 rotors, the R 60 is the longest rotor<br />
spinning machine on the market. With independently<br />
producing machine sides, it can still be as flexibly operated<br />
as a short machine.<br />
Producing two different <strong>yarn</strong> qualities on one machine<br />
could create the risk of confusion. On the R 60 this is<br />
excluded by the double tube loaders, the two package<br />
transport belts and the clear allocation of the machine<br />
sides on the display.<br />
12-106 •<br />
Dr. Stephan Weidner-Bohnenberger<br />
Head Product Management Rotor Spinning<br />
Ingolstadt<br />
stephan.weidner-bohnenberger@rieter.com<br />
15
16 LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Automation with <strong>Rieter</strong><br />
SERVOtrail<br />
Automation in the ring spinning mill is a worldwide trend. By means of an<br />
optimal material flow between roving frame and ring spinning machine,<br />
quality improvement and higher production with consecutive personnel<br />
savings are achieved by the manual, semi-automatic and fully-automatic<br />
SERVOtrail transport <strong>systems</strong>.<br />
Fig. 1 Safer bobbin<br />
transfer, dependable<br />
tube cleaning, rails that<br />
do <strong>no</strong>t become dirty<br />
and easy storage are a<br />
matter of course with<br />
<strong>Rieter</strong> SERVOtrail.<br />
In the spinning preparation through to the roving<br />
frame, a qualitatively superior roving is produced<br />
with <strong>Rieter</strong> machines. Unfortunately, the roving<br />
frame bobbins are then often treated inexpertly.<br />
They are stacked up on top of each other in the trolley<br />
for intermediate storage. Consequently, the top<br />
layer of the soft-turned roving is partially damaged<br />
and soiled. This loss in quality of the roving bobbins<br />
has a negative effect on the subsequent process.<br />
Perfect material flow from roving frame to the spinning<br />
machine<br />
With a <strong>Rieter</strong> SERVOtrail system the ring or compact<br />
spinning machines are perfectly supplied with the<br />
roving frame bobbins – without compromising on<br />
quality. The roving frame bobbins are <strong>no</strong>t touched<br />
on the surface but the inner tubes are held and are<br />
thereby moved into the ring spinning machine without<br />
any damage occurring. This ensures that the previously<br />
achieved quality of the roving is also maintained<br />
between the roving frame and the ring spinning machine.<br />
Flexible automation stages – according to requirements<br />
<strong>Rieter</strong> offers manual, semi-automatic and fully-automatic<br />
transport <strong>systems</strong> for the material flow between<br />
roving frame and ring spinning machine. According to<br />
requirements, <strong>Rieter</strong> <strong>customer</strong>s can select the level<br />
of automation that is most suitable for their spinning<br />
plant. For spinning plants with primarily the same<br />
assortment range, the <strong>Rieter</strong> SERVOtrail continuous<br />
is suitable. For frequent changeovers of fiber mix<br />
in the plant, the <strong>Rieter</strong> SERVOtrail flexible is beneficial.<br />
With the help of profitability analyses, <strong>Rieter</strong><br />
can calculate for the <strong>customer</strong>s the return on investment<br />
and thereby supports <strong>customer</strong>s in evaluating<br />
the most suitable transport system.<br />
Open and easy to clean<br />
In textile machine engineering, soiling in the spinning<br />
plant is one of the greatest challenges. Fiber<br />
fly and fluff intrude everywhere, even in practically<br />
closed profiles where the rollers are inside. For this<br />
reason, <strong>Rieter</strong> decided in favour of using an open rail<br />
profile for the SERVOtrail guide rails.<br />
The advantages of the open profile are:<br />
• The rails and trains in the ring spinning machines<br />
are automatically cleaned by the traveling cleaner.<br />
• The cleaning of the unit is possible during operation<br />
without removal of parts.<br />
• Inspections and maintenance are easy and quickly<br />
made without removal of trains, as the elements<br />
are visible and easily accessible.
Fig. 2 With SERVOtrail<br />
the roving frame<br />
bobbin logistics for all<br />
ring spinning machine<br />
models from <strong>Rieter</strong> can<br />
be flexibly automized:<br />
G 32, G 35 and K 45.<br />
SERVOtrail – benefits at a glance<br />
What distinguishes the design of the <strong>Rieter</strong> SERVOtrail?<br />
Which advantages result for the <strong>customer</strong>s?<br />
• The lightweight aluminium construction simplifies<br />
overhead positioning.<br />
• The units are practically maintenance free.<br />
• The new friction wheel drives are self-adapting,<br />
wear resistant and maintenance free.<br />
• The bearings of the castors are especially dustprotected.<br />
• The new lightweight castors guarantee simple and<br />
easy pulling of the trains with the roving frame<br />
bobbins.<br />
Material residue on the roving frame bobbins consists<br />
of fibers that can be reused. Here the <strong>Rieter</strong> bobbin<br />
stripper comes into action. It effectively cleans the<br />
bobbins and thereby opens the roving so well that the<br />
fiber material can be simply refed into the spinning<br />
process.<br />
Service across all continents<br />
<strong>Rieter</strong> provides a constant worldwide service network.<br />
Thanks to modern data tech<strong>no</strong>logy, a remote<br />
analysis is possible with SERVOtrail. Through the<br />
connection of the SERVOtrail drive to Internet via a<br />
secure VPN line, a remote analysis is possible:<br />
Tom Hanrath<br />
LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
• The visualization shows the entire plant with all<br />
components. This is impossible for tabular displays.<br />
Display of the visualization is easily configurable.<br />
• The data of the SERVOtrail plant is transferred live<br />
in realtime and allows a rapid plant analysis.<br />
• A direct access to the drive facilitates intervention<br />
by <strong>Rieter</strong> service technicians, wherever the service<br />
technician happens to be located worldwide.<br />
With SERVOtrail, <strong>Rieter</strong> offers very flexible automation<br />
solutions for every requirement. Through the<br />
optimal material flow between roving frame and<br />
ring spinning machine, the manual, semi-automatic<br />
and fully-automatic SERVOtrail transport <strong>systems</strong><br />
achieve an improvement in quality and an increase<br />
in production.<br />
12-107 •<br />
Project Manager Schönenberger<br />
Systeme GmbH<br />
Landsberg am Lech<br />
t.hanrath@schoenenberger.de<br />
17
18 LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Profitable Ring Spinning has<br />
a Name: <strong>Rieter</strong> G 32<br />
In the textile industry, the name <strong>Rieter</strong> stands for in<strong>no</strong>vation and dependability,<br />
for system supplier and tech<strong>no</strong>logical competence. This<br />
reputation is based on the continual, coordinated development of all<br />
system-relevant machines for the <strong>customer</strong>s’ benefit.<br />
Fig. 1 G 32 Ring<br />
spinning machine –<br />
high-quality <strong>yarn</strong>s eco<strong>no</strong>mically<br />
produced.<br />
Scientific analyses and physical basis research generally<br />
form the initial stage of a new development;<br />
new production techniques allow the realization and<br />
a very well trained, <strong>customer</strong>-orientated service ensures<br />
the recognized high availability of the entire<br />
<strong>systems</strong>. <strong>Rieter</strong> utilizes this potential to increase the<br />
performance of all system components without relinquishing<br />
the eco<strong>no</strong>mic benefits for the <strong>customer</strong>s.<br />
Adaptable solutions for the specific environment of<br />
the <strong>customer</strong>s ensure their profitability. A good example<br />
is the G 32 ring spinning machine.<br />
This machine has been designed as an eco<strong>no</strong>mic solution<br />
where the <strong>customer</strong> does <strong>no</strong>t have to forego<br />
the familiar quality. Unique technical solutions are<br />
then integrated when the eco<strong>no</strong>mic advantage for the<br />
<strong>customer</strong> is obvious. New solutions are sought in cases<br />
where existing solutions do <strong>no</strong>t fulfil eco<strong>no</strong>mic requirements.<br />
Three fundamental requirements form<br />
the basis running through the entire development process:<br />
the re<strong>no</strong>wned <strong>Rieter</strong> <strong>yarn</strong> quality, high dependability<br />
and lowest energy consumption per produced kg<br />
of <strong>yarn</strong>. In addition, the EliTe compacting system was<br />
optionally integrated in order to create a machine basis<br />
for conventional and compacted ring <strong>yarn</strong>.<br />
Re<strong>no</strong>wned <strong>Rieter</strong> Yarn Quality<br />
Based on extensive analyses, the spinning geometry<br />
was further improved with the change from the previous<br />
G 33 model to the present G 35 standard ring<br />
spinning machine and the Ri-Q-Draft35 resulted.<br />
The entire k<strong>no</strong>w-how of this development was also<br />
adopted as a feature of the G 32. Advantages over<br />
other competitors are the further reduced ends down<br />
ratio with increased speed potential.<br />
High Level of Dependability<br />
In the meantime, <strong>Rieter</strong> has commissioned more<br />
than 2 000 ring spinning machines with 1 200 and<br />
more spindles at <strong>customer</strong>s worldwide. Of particular<br />
importance here is the uniformity of the <strong>yarn</strong> quality
NE 30, 100 % COTTON, KNITTING YARN<br />
Energy consumption [kWh/kg]<br />
1.60<br />
1.55<br />
1.50<br />
1.45<br />
1.40<br />
1.35<br />
1.30<br />
1.25<br />
-8 %<br />
-8 %<br />
1.20<br />
16 500 17 000 17 500 18 000 18 500 19 000 19 500<br />
<strong>Rieter</strong><br />
Fig. 2 Practical values<br />
in India confirm the<br />
low energy consumption<br />
of the G 32.<br />
Fig. 3 G 32 with<br />
EliTe®CompactSet and<br />
the guide arm P3-1<br />
from <strong>Rieter</strong>.<br />
Competitor<br />
Spindle speed [U/min]<br />
and also the dependability of the components. Stateof-the-art<br />
TITAN rings in combination with HPS-18<br />
and HPS-25 spindles stand for extremely long life<br />
cycles and lowest energy consumption. The cops<br />
change system with SERVOgrip and ROBOdoff provides<br />
greatest dependability. SERVOgrip is the description<br />
for the controlled cops change without<br />
underwinding in combination with adaptable twist<br />
factor for sure separation of the <strong>yarn</strong> ends with all<br />
<strong>yarn</strong> counts and fiber types. ROBOdoff is the widelyk<strong>no</strong>wn,<br />
self-controlling and efficient doffer. The combination<br />
ensures a very low ratio of start-up ends<br />
down of approx. 0.7 % to 1.5 %.<br />
Lowest Energy Consumption per kg Yarn<br />
<strong>Rieter</strong> carried out extensive measurements under<br />
the same conditions for its own G 32 as well as for<br />
competitor machines. It was shown that depending<br />
on the spindle speed, energy savings with the G 32<br />
from 5 % to 8 %, and in some cases even higher,<br />
could be measured.<br />
Generally with the G 32 <strong>customer</strong>s operate with up<br />
to 15 % higher spindle speeds compared to competitor<br />
machines, due to the improved spinning stability.<br />
LINK <strong>59</strong> . 1 /2012<br />
PRODUCT NEWS<br />
Combined with the lower start-up and operational<br />
ends down, the following macroeco<strong>no</strong>mic advantages<br />
could be achieved at <strong>customer</strong>s:<br />
• up to 8 % lower energy consumption per kg of<br />
<strong>yarn</strong> [kWh/kg],<br />
• up to 25 % more production per spindle per time<br />
unit,<br />
• up to 30 % lower personnel requirement per kg of<br />
<strong>yarn</strong>.<br />
Impressive values that in combination with the re<strong>no</strong>wned<br />
durability of <strong>Rieter</strong> machines ensure the<br />
profitability of the investment.<br />
Integrable EliTe Compacting System<br />
With the construction of the G 32 attention was paid<br />
to creating a universal machine that is designed to<br />
cover a wide range of applications. This also includes<br />
the integration of the <strong>Rieter</strong> core <strong>yarn</strong> system and<br />
the well-k<strong>no</strong>wn EliTe compacting system. The latter<br />
is currently supplied with central suction and filter<br />
box which guarantees lower energy costs compared<br />
to small sectional motors as well as a high level of<br />
dependability. A further advantage over small sectional<br />
motors is here the modularity. The machine<br />
can both be prepared for EliTe and also be supplied<br />
with the integrated EliTe system. It goes without saying<br />
that the machine can also be retrofitted on site.<br />
<strong>Rieter</strong> has achieved a real coup with this machine.<br />
Flexibility, <strong>yarn</strong> quality, durability and low <strong>yarn</strong> production<br />
costs united in one system – the G 32 ring<br />
spinning machine has rightly earned its supplementary<br />
name: The Money Spinner. 12-108 •<br />
Andreas Hellwig<br />
Head Product Management Ring Spinning<br />
Winterthur<br />
andreas.hellwig@rieter.com<br />
19
20 LINK <strong>59</strong> . 1 /2012<br />
TECHNOLOGY<br />
ComforJet ® <strong>yarn</strong> convinces<br />
users<br />
ComforJet® is the brand name of the <strong>yarn</strong> <strong>spun</strong> on the <strong>Rieter</strong> J 20 airjet<br />
spinning machine. Various users confirm its advantages in downstream<br />
processing and the high quality of the end products.<br />
1<br />
2<br />
ComforJet®<br />
Fig. 1 Santoni’s Atlas<br />
HS circular knitting<br />
machine produces at<br />
45 rpm with Comfor-<br />
Jet® cotton <strong>yarn</strong>.<br />
Fig. 2 ComforJet®, the<br />
new <strong>yarn</strong>, <strong>spun</strong> on the<br />
<strong>Rieter</strong> airjet spinning<br />
machine.<br />
The new J 20 airjet spinning machine could be admired<br />
for the first time on <strong>Rieter</strong>’s exhibition booth<br />
at the ITMA in Barcelona. The many interested visitors<br />
were impressed by its space-saving concept and<br />
clearly structured operating layout. An Ne 50 cotton<br />
<strong>yarn</strong> and an Ne 30 viscose <strong>yarn</strong> were <strong>spun</strong> simultaneously<br />
on the completely independent machine sides.<br />
Positive feedback from knitting mills to Hermann<br />
Bühler Ltd<br />
The cotton <strong>yarn</strong> was produced from raw material<br />
from Hermann Bühler’s spinning mill in<br />
Switzerland. This company already successfully manufactures<br />
ComforJet® <strong>yarn</strong>s on its <strong>Rieter</strong> airjet spinning<br />
machines and is one of the first licensees of the<br />
ComforJet® brand. Experience with purchasers of its<br />
<strong>yarn</strong>s is very positive. Renata Franz, Business Development<br />
Manager at Hermann Bühler, comments:<br />
“The good package build of the cylindrical bobbins<br />
facilitates faultless take-off behavior on the knitting<br />
machine.”<br />
High speeds on the knitting machine impress Santoni<br />
<strong>customer</strong>s<br />
Good running properties in the knitting mill have also<br />
been confirmed by Italian knitting machine manufacturer<br />
Santoni, the market leader in seamless knitting<br />
machines. The cylindrical packages of airjet-<strong>spun</strong><br />
<strong>yarn</strong> were supplied by Hermann Bühler and processed<br />
on its ATLAS HS (high speed) circular knitting<br />
machine in the company’s test center and on its<br />
booth at the ITMA in Barcelona.<br />
To quote Gianpiero Valsecchi, Santoni’s sales manager:<br />
“The high speed of 45 rpm and the extremely<br />
low fiber fly of the ComforJet® cotton <strong>yarn</strong> in particular<br />
fascinated us and visitors to our booth.” According<br />
to Gianpiero Valsecchi, ComforJet® <strong>yarn</strong> enables<br />
maximum productivity to be achieved while machine<br />
cleaning effort is reduced at the same time. Efficiency<br />
is improved significantly due to the very low incidence<br />
of fiber fly.<br />
Advantages for textile finishers and final <strong>customer</strong>s<br />
The special structure of the <strong>yarn</strong> enables size and<br />
dyestuff to be reduced in textile finishing. Compared<br />
to conventional ring-<strong>spun</strong> <strong>yarn</strong>, the finished fabric<br />
impresses after washing with extremely low pilling,<br />
lower shrinkage and very high dimensional stability.<br />
The uniform fabric appearance and – for an airjet<strong>spun</strong><br />
<strong>yarn</strong> – pleasantly soft hand in the finished fabric<br />
are further characteristic features of ComforJet®<br />
<strong>yarn</strong>. 12-109 •<br />
Anja Knick<br />
Senior Marketing Manager<br />
Winterthur<br />
anja.knick@rieter.com
4 spinning <strong>systems</strong> in the <strong>Rieter</strong><br />
SpinCenter<br />
The entire <strong>Rieter</strong> spinning process line with the 4 spinning <strong>systems</strong>, including<br />
the new R 60 rotor spinning machine and the new J 20 airjet<br />
spinning machine, is available for <strong>customer</strong> spinning trials in the Spin-<br />
Center in Winterthur.<br />
Fig. 1 Our tech<strong>no</strong>logists<br />
at work in the SpinCenter<br />
(from left to right:<br />
Andreas Birsner,<br />
Tech<strong>no</strong>logist, and Hans-<br />
Peter Pridöhl, Head of<br />
Customer Tech<strong>no</strong>logy)<br />
Customers who are interested in <strong>Rieter</strong> spinning machines<br />
have the opportunity to arrange for trials to be<br />
run with their individual raw material from fiber to<br />
<strong>yarn</strong>, and even further to the end product, especially<br />
for uncommon spheres of application, special raw materials<br />
or new spinning processes.<br />
The entire spinning line is available in the SpinCenter<br />
in Winterthur for trials of this nature. This also includes<br />
the current final spinning machines, such as<br />
the G 35 ring spinning machine, the K 45 compact<br />
spinning machine, and <strong>no</strong>w also the R 60 rotor spinning<br />
machine and the J 20 airjet spinning machine.<br />
Trials can therefore be conducted on all 4 spinning<br />
<strong>systems</strong>. This is completely unique and only possible<br />
with <strong>Rieter</strong>.<br />
LINK <strong>59</strong> . 1 /2012<br />
TECHNOLOGY<br />
Spinning trials tailored to individual <strong>customer</strong> needs<br />
In consultation with our <strong>customer</strong>s we decide how<br />
much raw material is to be provided and in what<br />
form. Careful planning and conduct of the trials, conscientious<br />
analysis and in-house discussion of the results<br />
culminate in an expert concluding report. This<br />
includes the optimum settings for achieving the best<br />
possible <strong>yarn</strong> quality. The guidelines for the <strong>customer</strong><br />
spinning trials comply with ISO 9000 / 9001.<br />
Customers can test new machines and processes at<br />
little expense<br />
Conducting a wide range of different trials in a production<br />
spinning mill is very costly and difficult, if <strong>no</strong>t impossible.<br />
The <strong>Rieter</strong> SpinCenter gladly accepts orders<br />
for trials and guarantees the use of the latest tech<strong>no</strong>logies<br />
in combination with <strong>Rieter</strong> tech<strong>no</strong>logists’ extensive<br />
k<strong>no</strong>w-how. Customer spinning trials provide an<br />
opportunity to test new processes and thus acquire<br />
basic decision-making data for purchasing the machines<br />
in question. The sales manager responsible is<br />
the contact between the <strong>customer</strong> and the SpinCenter<br />
and is pleased to receive enquiries.<br />
It isn’t necessary to conduct a new trial on each occasion.<br />
If similar tech<strong>no</strong>logy trials with comparable material<br />
have already been conducted in the SpinCenter,<br />
the <strong>customer</strong> can benefit from <strong>Rieter</strong>’s k<strong>no</strong>wledge and<br />
experience, which is stored in our tech<strong>no</strong>logy database<br />
(TIS).<br />
As a <strong>systems</strong> supplier, <strong>Rieter</strong> is the only manufacturer<br />
of spinning machinery able to conduct trials covering<br />
the entire spinning process, and impartially<br />
recommend the right choice from among 4 spinning<br />
tech<strong>no</strong>logies, based on the <strong>customer</strong>’s strategy and<br />
environment. 12-110 •<br />
Anja Knick<br />
Senior Marketing Manager<br />
Winterthur<br />
anja.knick@rieter.com<br />
21
22 LINK <strong>59</strong> . 1 /2012<br />
TECHNOLOGY<br />
Processing of Indian Cotton<br />
How can 1 1/16" cotton with a high short fiber content best be processed?<br />
Tests on the <strong>Rieter</strong> rotor spinning and ring spinning <strong>systems</strong> provide<br />
indications. The possibilities and the potential of processing 100 %<br />
cotton on a rotor spinning machine are today in the Asian countries still<br />
far from being exhausted.<br />
You can obtain further<br />
details on this test in<br />
the 20-page special<br />
print “Processing<br />
Indian Raw Cotton”<br />
which you can download<br />
in Internet using<br />
the printed code.<br />
http://bit.ly/ItN4Lm<br />
Fig. 1 Areas of application<br />
of the spinning<br />
<strong>systems</strong>.<br />
[1 0 0 0 0 0 0 tons]<br />
(mm)<br />
(inch)<br />
RANGE OF APPLICATION OF THE SPINNING SYSTEMS FOR 100 % COTTON<br />
5 . 0<br />
4 . 5<br />
4 . 0<br />
3 . 5<br />
3 . 0<br />
2 . 5<br />
2 . 0<br />
1 . 5<br />
1 . 0<br />
0 . 5<br />
0<br />
2 3 . 0-2 5 . 4 2 6 . 1 9 2 6 . 9 9 2 7 . 7 8 2 8 . 5 8 2 9 . 3 7 3 0 . 1 6 3 0 . 9 6 3 1 . 7 5 3 2 . 5 4 3 3 . 3 4 3 4 . 1 3 3 4 . 9 3 3 5 . 7 -4 4 . 4 1<br />
2 9 /3 2 -1 1 1 /3 2 1 1 /1 6 1 3 /3 2 1 1 /8 1 5 /3 2 1 3 /1 6 1 7 /3 2 1 1 /4 1 9 /3 2 1 5 /1 6 1 1 1 /3 2 1 3 /8 1 3 /3 2 -1 3 /4<br />
short<br />
AFIS Autojet; commercial staple; UQL (w) (mm)<br />
In the processing of 100 % cotton with the rotor<br />
spinning system, the appropriate field of application<br />
based on eco<strong>no</strong>mic and quality aspects lies in a staple<br />
length range from 1" to 1 1/8" cotton. According<br />
to the short fiber percentage and trash content of the<br />
cotton, the rotor tech<strong>no</strong>logy is often the only option<br />
to produce <strong>yarn</strong> eco<strong>no</strong>mically – and simultaneously<br />
in the quality demanded. Depending on the staple<br />
length of the cotton, the areas of application for the<br />
various end spinning processes can thereby be allocated<br />
(Fig. 1).<br />
Up to 2010 already 7.8 million rotor spinning units<br />
worldwide have been installed. In comparison to<br />
the installed ring spindles, this number is small.<br />
As, however, the productivity of a rotor unit compared<br />
to a ring spinning unit is higher by the factor<br />
Ring spinning<br />
Rotor spinning Air-jet spinning<br />
medium long extra long<br />
SPINNING UNITS INSTALLED WORLDWIDE 2010<br />
Total installed spinning units [million]<br />
1 6 0<br />
1 4 0<br />
1 2 0<br />
1 0 0<br />
8 0<br />
6 0<br />
4 0<br />
2 0<br />
0<br />
71<br />
162<br />
Fig. 2 Installed spinning units worldwide.<br />
7,8<br />
1,5<br />
Ring carded Ring combed Rotor Air-Jet<br />
6, this corresponds to a percentage of approx. 30 %<br />
of the <strong>yarn</strong> production. Worldwide, rotor spinning is<br />
an established tech<strong>no</strong>logy that fulfils the presently<br />
demanded high requirements for the <strong>yarn</strong> in downstream<br />
processing (Fig. 2).<br />
The <strong>yarn</strong> fineness with rotor tech<strong>no</strong>logy lies in the<br />
range from Ne 3 – 40, whereby the typical and mostly<br />
produced <strong>yarn</strong> count is Ne 30. Yarns in this count<br />
are primarily used in circular knitting but are also<br />
processed in weaving (Fig. 3).<br />
With rotor spinning, various process stages can be<br />
selected for the processing of the fibers (Fig. 4). The<br />
choice of the process operation with rotor spinning<br />
depends on the <strong>yarn</strong> count to be produced and the<br />
required <strong>yarn</strong> quality. With the processing of 100 %<br />
cotton and a <strong>yarn</strong> count of Ne 30, a process using a<br />
card without drafting module and 1 or 2 subsequent<br />
drafting passages is most practical.<br />
Test structures<br />
To be able to show how the two spinning <strong>systems</strong><br />
– ring and rotor – react to an increased percentage<br />
of short fibers, Indian Shankar 6 cotton with a relatively<br />
high short fiber percentage was used and processed<br />
to 8 various <strong>yarn</strong>s. The <strong>yarn</strong> values of these<br />
8 <strong>yarn</strong>s were subsequently compared, so as to define<br />
the optimal procedure for short staple cotton.
Installed rotors [1 000]<br />
Fig. 3<br />
Fig. 4<br />
Short fiber content < 12.5 mm (n) [%]<br />
Fig. 5<br />
MAIN AREAS OF APPLICATION FOR ROTOR SPINNING<br />
Total number of rotors installed 7 699 980<br />
3 0 0 0<br />
2 5 0 0<br />
2 0 0 0<br />
1 5 0 0<br />
1 0 0 0<br />
5 0 0<br />
3 5 . 0<br />
3 2 . 5<br />
3 0 . 0<br />
2 7 . 5<br />
2 5 . 0<br />
2 2 . 5<br />
2 0 . 0<br />
1 7 . 5<br />
1 5 . 0<br />
1 2 . 5<br />
1 0 . 0<br />
7 . 5<br />
5 . 0<br />
0<br />
692<br />
1 536<br />
1 845<br />
2 774<br />
652<br />
188<br />
13<br />
3 6 12 18<br />
Yarn count [Ne]<br />
24 30 40<br />
PROCESS SEQUENCE OF THE RIETER ROTOR SYSTEM<br />
VARIOline Card<br />
C 70<br />
VARIOline Card<br />
C 70 with SB-Module<br />
VARIOline Card<br />
C 70 with RSB-Modul<br />
Draw frame<br />
SB-D 45<br />
Shorter process<br />
Shortest process<br />
Draw frame<br />
RSB-D 45<br />
Draw frame<br />
RSB-D 45<br />
SHORT FIBER PERCENTAGE PER PROCESS STAGE AND YARN TYPE<br />
100 % cotton 1 1/16", Almeter<br />
bale after<br />
B 12<br />
blowroom ring<br />
carded<br />
after<br />
B 60<br />
card<br />
input<br />
ring<br />
combed<br />
Rotor spinning<br />
R 60<br />
Rotor spinning<br />
R 60<br />
Rotor spinning<br />
R 60<br />
carded<br />
combed<br />
card pre- lap combed autoleveler roving<br />
drawframe<br />
sliver drawframe<br />
rotor<br />
carded<br />
rotor<br />
combed<br />
LINK <strong>59</strong> . 1 /2012<br />
TECHNOLOGY<br />
1. Ring <strong>yarn</strong>, carded, Ne 20<br />
2. Ring <strong>yarn</strong>, carded, Ne 30<br />
3. Ring <strong>yarn</strong>, combed, Ne 20, <strong>no</strong>il extraction 16 %<br />
4. Ring <strong>yarn</strong>, combed, Ne 30, <strong>no</strong>il extraction 16 %<br />
5. Rotor <strong>yarn</strong>, carded, Ne 20<br />
6. Rotor <strong>yarn</strong>, carded, Ne 30<br />
7. Rotor <strong>yarn</strong>, combed, Ne 20, <strong>no</strong>il extraction 14 %<br />
8. Rotor <strong>yarn</strong>, combed, Ne 30, <strong>no</strong>il extraction 14 %<br />
The <strong>yarn</strong>s were processed using carded and combed<br />
operations to <strong>yarn</strong> counts of Ne 20 and 30. With both<br />
<strong>yarn</strong> types, the influence of the short fiber percentage<br />
on the <strong>yarn</strong> values was also examined. For this<br />
purpose, the raw material was additionally combed,<br />
14% with the rotor spinning process and 16 % with<br />
the ring spinning process. The card production was<br />
adapted, depending on the end spinning system,<br />
with 100 % kg/h for the rotor application and with<br />
80 kg/h for the ring application.<br />
Raw material results<br />
The short fiber percentage of the cotton at 22 % is relatively<br />
high. Technical measurement showed a rise in<br />
the short fiber proportion due to the fiber interlacings<br />
resulting from the cleaning stages in the blowroom.<br />
This is, however, <strong>no</strong>t a true fiber shortening. The reason<br />
is that the technical measuring options available<br />
also record fiber interlacings as short fibers.<br />
During the carding process, a parallelization of the fibers<br />
again takes place. The measured short fiber percentage<br />
in the bales should ideally show the same<br />
short fiber percentage in the sliver as in the bales,<br />
when subjected to gentle cleaning and carding, after<br />
fiber parallelization by the drafting passages.<br />
The short fiber percentage after <strong>no</strong>il extraction is 10<br />
% with the ring spinning process and 15 % with the<br />
carded rotor spinning process (Fig. 5).<br />
23
24 LINK <strong>59</strong> . 1 /2012<br />
TECHNOLOGY<br />
Mean fiber length (n) [mm]<br />
Fig. 6<br />
Fig. 7<br />
Number of imperfections<br />
Fig. 8<br />
MEAN FIBER LENGTH PER PROCESS STAGE AND YARN TYPE<br />
100 % cotton 1 1/16", Almeter<br />
2 2 . 0<br />
2 1 . 5<br />
2 1 . 0<br />
2 0 . 5<br />
2 0 . 0<br />
1 9 . 5<br />
1 9 . 0<br />
1 8 . 5<br />
1 8 . 0<br />
1 7 . 5<br />
1 7 . 0<br />
1 6 . 5<br />
1 6 . 0<br />
0.11<br />
0.10<br />
0.09<br />
0.08<br />
0.07<br />
0.06<br />
0.05<br />
0.04<br />
0.03<br />
0.02<br />
0.01<br />
0.00<br />
250<br />
225<br />
200<br />
175<br />
150<br />
125<br />
100<br />
75<br />
50<br />
25<br />
0<br />
bale after<br />
B 12<br />
blowroom ring<br />
carded<br />
35<br />
14.87<br />
60<br />
card lap comber sliver autoleveler<br />
draw frame<br />
0,105<br />
0,104<br />
0,105 0,073 0,011 0,019<br />
0,109<br />
0,107<br />
0,109<br />
0,099 0,054<br />
42<br />
after<br />
B 60<br />
38<br />
14.71<br />
card<br />
input<br />
68<br />
ring<br />
combed<br />
TRASH CONTENT PER PROCESS STAGE AND YARN TYPE<br />
100 % cotton 1 1/16", ITV<br />
Ring carded<br />
Ring combed<br />
Rotor carded<br />
Rotor combed<br />
24<br />
card pre- lap comber autoleveler roving<br />
drawframe<br />
sliver drawframe<br />
10<br />
15.48<br />
217<br />
rotor<br />
carded<br />
YARN QUANITY DEPENDENT ON SPINNING PROCESS<br />
100 % cotton 1 1/16", Ne 30, αm = 109, R 40 and G 33 (winded)<br />
Rotor<br />
carded<br />
Rotor combed<br />
13.9 % <strong>no</strong>il<br />
63<br />
Ring carded<br />
Thin places -50 % Thick places +50 % Neps +280 %<br />
2<br />
21<br />
rotor<br />
combed<br />
12.37<br />
7<br />
Ring combed<br />
16.4 % <strong>no</strong>il<br />
combed<br />
carded<br />
CVm<br />
16<br />
15.5<br />
15<br />
14.5<br />
14<br />
13.5<br />
13<br />
12.5<br />
12<br />
11.5<br />
11<br />
The short fiber percentage affects the mean fiber<br />
length and consequently, alongside the fiber fineness,<br />
also the spinning limit and <strong>yarn</strong> quality. The mean fiber<br />
length is 19 mm in the case of the carded application<br />
and 20 mm – 21 mm depending on combing<br />
height in the case of the combed application (Fig. 6).<br />
The residual trash content in the feed sliver on the<br />
rotor spinning machine is an important criterion for<br />
the operational safety of a rotor spinning machine.<br />
Soiling of the rotor groove when the trash content is<br />
too high creates thread breakage. Experience shows<br />
that the residual trash content in the feed sliver for<br />
the rotor spinning process with <strong>yarn</strong>s from Ne 20 –<br />
30 should <strong>no</strong>t be higher than 0.07 – 0.1 %. These<br />
requirements are fulfilled by the Shankar 6 cotton in<br />
the case of a carded application. With the combing<br />
process, the trash content is generally reduced by<br />
60 – 85 % (Fig. 7).<br />
The combing process can thereby be tech<strong>no</strong>logically<br />
practical with a low combing level on the rotor spinning<br />
machine. In general, the raw material properties<br />
such as a high short fiber percentage, lower mean<br />
staple and trash content in the cotton affect the rotor<br />
spinning process far less negatively than the ring spinning<br />
process.<br />
Yarn results<br />
Imperfections (IPI) and <strong>yarn</strong> unevenness.<br />
The total number of imperfections with combed and<br />
carded rotor <strong>yarn</strong> lie with α m = 109 (α e = 3.6) at the<br />
same level. The number of imperfections in carded<br />
ring <strong>yarn</strong> is significantly greater compared to rotor<br />
<strong>yarn</strong>, despite reduced card production at 80 kg/h instead<br />
of 100 kg/h.<br />
The combing process – and thereby also the additional<br />
elimination of short fibers – shows <strong>no</strong> advantages<br />
in the rotor line in relation to <strong>yarn</strong> evenness.<br />
This result is extraordinary as the short fiber content<br />
in the ring spinning process clearly influences the<br />
<strong>yarn</strong> evenness. That means that with the rotor spinning<br />
process short fibres in the fiber guide channel<br />
can be guided far better than is possible with ring<br />
spinning in the drafting arrangement.
Number of particles/1 000 m<br />
Fig 9<br />
Fig. 10<br />
TRASH PARTICLES IN THE YARN DEPENDENT ON PROCESS<br />
100 % 1 1/16" Cotton, Yarn count Ne 30, αm = 109, R 40 and G 33 (winded)<br />
Rotor carded Rotor combed<br />
13.9 % comber <strong>no</strong>il<br />
Ring carded Ring combed<br />
16.4 % comber <strong>no</strong>il<br />
If the short fiber percentage is reduced by combing,<br />
a better <strong>yarn</strong> quality is achieved with ring spinning.<br />
This is impressively conspicuous with combed cotton<br />
<strong>yarn</strong> with an approx. 16 % level of <strong>no</strong>il extraction<br />
and a <strong>yarn</strong> count of Ne 30. The measurements show<br />
that by means of the combing process in comparison<br />
to a ring <strong>yarn</strong>, a marked improvement in the <strong>yarn</strong><br />
evenness and purity can be recognized. The <strong>yarn</strong><br />
quality values then show better results than those of<br />
a carded rotor <strong>yarn</strong> (Fig. 8).<br />
100 % COTTON 1 1/16", NE 20, COMBER NOIL 13.9 %, R 40 AND G 33 (WINDED)<br />
Rotor carded, αm = 109<br />
Rotor combed, αm = 109<br />
Ring combed, αm = 98<br />
Ring carded, αm = 109<br />
LINK <strong>59</strong> . 1 /2012<br />
TECHNOLOGY<br />
The residual trash content of a rotor <strong>yarn</strong> is far better<br />
than with carded ring <strong>yarn</strong>, due to the trash extraction<br />
on the opening roller in the case of a carded application.<br />
Only the combing process and the related<br />
elimination of trash particles make a very low residual<br />
trash content possible also with ring <strong>yarn</strong>.<br />
Yarn strength and elongation<br />
The carded Ne 20 rotor <strong>yarn</strong> when compared to<br />
combed rotor <strong>yarn</strong> at an identical twist factor has an<br />
approx. 1 cN/tex lower <strong>yarn</strong> strength because of the<br />
smaller mean staple length. The strength of the carded<br />
Ne 30 ring <strong>yarn</strong>, however, is higher by 1 cN/tex<br />
when compared to carded rotor <strong>yarn</strong>. It is common<br />
k<strong>no</strong>wledge that in direct comparison to rotor <strong>yarn</strong>s<br />
with an equal raw material structure, ring <strong>yarn</strong>s exhibit<br />
higher strength. This is <strong>link</strong>ed to the fiber orientation<br />
in the <strong>yarn</strong> bundle resp. the structure of the<br />
core and wrapped fibers.<br />
Yarn hairiness and abrasion<br />
Processing of the <strong>yarn</strong>s is made on a circular knitting<br />
machine. Ring and rotor <strong>yarn</strong>s differ clearly with regard<br />
to hairiness. This difference is based on the varying<br />
<strong>yarn</strong> structures of a ring and a rotor <strong>yarn</strong>. The<br />
hairiness according to Uster Tester 4 is almost double<br />
with a carded ring <strong>yarn</strong> as with a rotor <strong>yarn</strong>. The differences<br />
between a carded and a combed rotor <strong>yarn</strong><br />
are minimal. The combing process does <strong>no</strong>t affect the<br />
25
26 LINK <strong>59</strong> . 1 /2012<br />
TECHNOLOGY<br />
Fig. 11<br />
Rotor carded,<br />
Single Jersey 100 %,<br />
Cotton, 1 1/16",<br />
Ne 30,<br />
Navel KS-NX,<br />
110 000 U/min,<br />
αm 109.<br />
Fig. 12<br />
Rotor combed,<br />
Single Jersey 100 %,<br />
Cotton, 1 1/16",<br />
Ne 30,<br />
Navel KS-NX,<br />
110 000 U/min,<br />
αm 109.<br />
Fig. 13<br />
Ring carded,<br />
Single Jersey 100 %,<br />
Cotton,<br />
1 1/16",<br />
Ne 30,<br />
12 200 U/min,<br />
αm 109.<br />
Fig. 14<br />
Ring combed,<br />
Single Jersey 100 %,<br />
Cotton,<br />
1 1/16",<br />
Ne 30,<br />
15 000 U/min,<br />
αm 109.<br />
hairiness values of a rotor <strong>yarn</strong>. Thus, with rotor <strong>yarn</strong><br />
the <strong>yarn</strong> hairiness is <strong>no</strong>t primarily determined by the<br />
fiber length for but rather by the <strong>yarn</strong> structure.<br />
Clear advantages concerning <strong>yarn</strong> abrasion are obvious<br />
with rotor <strong>yarn</strong>s. Abrasion with a ring <strong>yarn</strong> is<br />
higher by more than factor 5 compared to that of a<br />
rotor <strong>yarn</strong>. It can be ascertained that the combing<br />
process has a positive impact on the <strong>yarn</strong> abrasion<br />
of a rotor <strong>yarn</strong>. The advantages of the rotor spinning<br />
tech<strong>no</strong>logy when processing Shankar 6 cotton with<br />
a relatively high level of short fibers are impressive.<br />
Micrographs show the typical rotor <strong>yarn</strong> structure<br />
with wrapper fibers in comparison to the ring <strong>yarn</strong><br />
structure. The greater hairiness and the associated<br />
volume increase of the ring <strong>yarn</strong> are clearly visible<br />
on the micrographs. Normally, a rotor <strong>yarn</strong> is characterized<br />
by a greater <strong>yarn</strong> diameter than a ring <strong>yarn</strong>,<br />
at an equal <strong>yarn</strong> count. This results in higher opacity<br />
in knits. However, as is shown by these results,<br />
this effect can also be reversed by a shortening staple<br />
length with ring <strong>yarn</strong> due to inferior <strong>yarn</strong> orientation<br />
and bonding in the <strong>yarn</strong> strand (Fig. 10).<br />
Knitted fabric properties<br />
In this specific case, the following commonly practised<br />
and typical criteria for assessment of the knits<br />
were applied:<br />
• Fabric touch<br />
• Opacity<br />
• Evenness<br />
• Pilling<br />
Touch, opacity and evenness<br />
As to be expected, ring <strong>yarn</strong> is softer to the touch<br />
than rotor <strong>yarn</strong>. The greater opacity of the carded<br />
ring <strong>yarn</strong> compared to rotor <strong>yarn</strong> is in this case due<br />
to the higher hairiness. This influence is also apparent<br />
in the diminished opacity of combed ring <strong>yarn</strong>.<br />
Carded ring <strong>yarn</strong> shows a clearly inferior fabric appearance<br />
to that of rotor <strong>yarn</strong>s.<br />
Only the combing process can improve the appearance<br />
in comparison to carded ring <strong>yarn</strong>s to lie within<br />
the same range as rotor <strong>yarn</strong>. The use of the combing<br />
process with rotor <strong>yarn</strong> can<strong>no</strong>t achieve improvements<br />
in the knits.<br />
Pilling<br />
Most of the physical properties of an end article are<br />
the result of the structure of the processed <strong>yarn</strong>. The<br />
pilling characteristics of the textile surface, especially<br />
in knits, are one of the most important quality<br />
criteria. End articles that form surface fiber pills<br />
after only a short period of wear cause an extreme<br />
devaluation of quality and are undesirable. Pilling is<br />
therefore a constant theme and can be substantially<br />
influenced and improved by lower hairiness and the<br />
fiber bonding structure of the end spinning process.
The higher the grade, the better<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
Fig. 15<br />
PILLING VS. TYPE OF YARN<br />
Knitted fabric, Ne 20, acc. to Martindale, Yarn count Ne 20, Martindale<br />
500 1 000 1 500 2 000 2 500 3 000 3 500 4 000 4 500 5 000 5 500 6 000 6 500 7 000 7 500<br />
Rotor carded, αm = 109<br />
Rotor combed, αm = 109<br />
Cycles<br />
Ring combed, αm = 98<br />
Ring carded, αm = 109<br />
With all the knits examined, the ring <strong>yarn</strong> showed<br />
the worst pilling values. The carded rotor <strong>yarn</strong><br />
achieved the lowest pilling values resp. the best<br />
marks (Figs. 11-14). The greater randomization of<br />
fibers and the wrapper fibers produce resistance to<br />
the formation of fiber pills. It can be clearly seen that<br />
the combed rotor <strong>yarn</strong>s show inferior values to those<br />
of the carded rotor <strong>yarn</strong>s. This fact can also be explained<br />
by the reducing randomization of the fibers<br />
due to the different staple compositions (Fig. 15).<br />
Summary<br />
By means of the combing process, the trash content<br />
is reduced in a range from 60 – 85 %. With a low<br />
combing level, the combing process can certainly<br />
represent a tech<strong>no</strong>logically suitable solution for the<br />
rotor spinning process. The additional short fiber<br />
extraction shows <strong>no</strong> benefit in the question of <strong>yarn</strong><br />
evenness with rotor <strong>yarn</strong>.<br />
That means with the rotor spinning process, short<br />
fibers can be far better guided through the fiber<br />
guide channel than is possible with ring spinning by<br />
means of the drafting arrangement. In contrast, with<br />
the production of ring <strong>yarn</strong> the combing process is<br />
indispensible to improve quality when a higher short<br />
fiber percentage, a lower mean staple or a higher<br />
trash content exist in the cotton.<br />
LINK <strong>59</strong> . 1 /2012<br />
TECHNOLOGY<br />
Such prerequisites have a far less negative effect on<br />
the rotor spinning process than on the ring spinning<br />
process. According to the raw material constellation<br />
and the type of downstream processing, the rotor<br />
spinning process can be considered as more eco<strong>no</strong>mical.<br />
The evenness of the rotor <strong>yarn</strong>s is superior<br />
to that of ring <strong>yarn</strong> in the case of processing carded<br />
Shankar 6 cotton at a <strong>yarn</strong> count of Ne 20.<br />
By means of the combing process, the ring <strong>yarn</strong> quality<br />
can be considerably improved and is only then superior<br />
to the carded rotor <strong>yarn</strong> in the case examined,<br />
with the exception of the hairiness and abrasion resistance<br />
and the pilling values.<br />
The greater hairiness and the associated volume increase<br />
in the ring <strong>yarn</strong> resulted in a better opacity in<br />
the knitted fabric. Normally, a rotor <strong>yarn</strong> is characterized<br />
by a greater <strong>yarn</strong> diameter at equal <strong>yarn</strong> fineness<br />
than with a ring <strong>yarn</strong>. This results in a higher<br />
opacity in the knitted fabric. This effect can be reversed<br />
by a shortening staple length due to the inferior<br />
fiber orientation and bonding in the <strong>yarn</strong> strand.<br />
Ring <strong>yarn</strong> has a softer touch compared to rotor <strong>yarn</strong>.<br />
By means of the combing process with rotor <strong>yarn</strong>, <strong>no</strong><br />
improvement in the knitted fabric can be achieved.<br />
The reduction of the twist coefficient with combed<br />
rotor <strong>yarn</strong> also does <strong>no</strong>t lead to any improvement,<br />
neither in the touch <strong>no</strong>r in the other assessment<br />
criteria. With all the knits examined, the ring <strong>yarn</strong><br />
exhibited the worst pilling values. The rotor <strong>yarn</strong><br />
achieved the best pilling values. 12-111 •<br />
Harald Schwippl<br />
Head Tech<strong>no</strong>logy<br />
Winterthur<br />
harald.schwippl@rieter.com<br />
27
28 LINK <strong>59</strong> . 1 /2012<br />
PARTS<br />
Precise Spindle Monitoring<br />
with ISM<br />
Automation of production, especially in the spinning process, is becoming<br />
increasingly important. Rapid intervention where a problem arises, high<br />
machine productivity and the resulting minimizing of follow-up costs are<br />
factors that mean a decisive competitive edge for <strong>yarn</strong> producers.<br />
1<br />
2<br />
<strong>Rieter</strong> offers a system which can significantly influence<br />
just these factors.<br />
Optimizing Production and Quality<br />
Individual Spindle Monitoring System (ISM) is based<br />
on the optical scanning of the ring traveler. If the<br />
traveler is <strong>no</strong> longer rotating on the ring, the control<br />
detects an end down and signalizes this by the<br />
three-stage light guide system. Continuous monitoring<br />
also permits slipper spindles to be precisely<br />
identified and indicated.<br />
The machine operator is therefore in the position to<br />
locate the fault and to very quickly rectify it on the<br />
spot. (Fig. 1)<br />
Fault Finding instead of Fault Searching<br />
The precise operator guide allows personnel to optimize<br />
their procedures and thereby results in clear<br />
time saving. Unnecessary inspection tours are <strong>no</strong><br />
longer made. Direct access to the right spinning position<br />
also brings a reduction in avoidable fiber waste.<br />
(Fig. 2)<br />
Uninterrupted Documentation of Spinning Positions<br />
All ISM data is stored and can be used for numerous<br />
types of analysis. Connection to the <strong>Rieter</strong> data collection<br />
system SPIDERweb is unproblematic.<br />
Also available as Retrofit<br />
<strong>Rieter</strong> Parts offers this system as an eco<strong>no</strong>mical retrofit<br />
on new as well as on older machine generations.<br />
Efficiency will be demonstrably increased and the<br />
constancy of the <strong>yarn</strong> quality improved. 12-112 •<br />
Urs Tschanz<br />
Head Sales Support Parts SYS<br />
Winterthur<br />
urs.tschanz@rieter.com
In<strong>no</strong>vative Retrofits for<br />
Draw Frames<br />
Many progressive enhancements of the draw frame can be integrated in<br />
older machine models with little effort. The <strong>no</strong>n-contact pulse generator<br />
B92 EVO facilitates improved measuring accuracy – even with heavy<br />
soiling. Thanks to the in<strong>no</strong>vative XR na<strong>no</strong>coating the life cycles of the<br />
calander disc in the sliver canal are extended. The accuracy of the sliver<br />
thickness measurement is thereby improved.<br />
Fig. 1 The new pulse<br />
generator B92 EVO<br />
consisting of sensor<br />
and magnet ring.<br />
Fig. 2 Long lasting<br />
calander discs with<br />
XR coating.<br />
The pulse generator B92 EVO is available for the<br />
draw frame types RSB-D 30, RSB-D 30c, RSB-D 35,<br />
RSB-D 35c, RSB-D 40 and RSB-D 40c.<br />
Non-Contact Pulse Generator B92 EVO<br />
The magnetic measuring principle of the pulse generator<br />
B92 EVO is based on a magnet ring and sensor<br />
head. With older draw frame models, an additional<br />
shaft is delivered to facilitate this <strong>no</strong>n-contact measuring<br />
principle.<br />
The high shock/vibration resistance and dustproof<br />
properties (Protection Class IP67) of the pulse generator<br />
B92 EVO allow a faultless application even under<br />
extremely dusty environmental conditions with<br />
fiber fly. The vibration resistance also ensures a high<br />
level of measuring accuracy and functional safety.<br />
A longer life cycle compared to its predecessor<br />
is achieved by the new pulse generator B92 EVO<br />
through contact-free measuring. Bearings that could<br />
wear out <strong>no</strong> longer exist.<br />
During the development, great value was placed on<br />
simple installation and high ease of maintenance.<br />
The main drive shaft only needs to be installed and<br />
dismantled when assembling the magnet ring; in<br />
contrast to the exchange of the old pulse generator<br />
B92, where the shaft had to be completely dismantled<br />
every time.<br />
The sensor B92 EVO is attached to a separate holder<br />
which allows it to be changed without removal of the<br />
main drive shaft. With its lower installation height<br />
Jörg Feigl<br />
Project Manager Parts<br />
Ingolstadt<br />
joerg.feigl@rieter.com<br />
LINK <strong>59</strong> . 1 /2012<br />
PARTS<br />
and the integrated plug, it is very easy to install the<br />
new pulse generator B92 EVO and to connect it to the<br />
existing socket. This results in a quick recommissioning<br />
of the draw frame following a successful retrofit.<br />
Long-lasting Calander Disc XR with Na<strong>no</strong>coating<br />
The calander disc XR can be supplied for all <strong>Rieter</strong><br />
autoleveler draw frames – from the RSB 951 machine<br />
generation.<br />
The calander discs are necessary for transporting<br />
the sliver in the sliver canal of the draw frame and<br />
are thus subjected to persistent stress resp. a higher<br />
level of wear. The calander discs are responsible<br />
for part of the quality monitoring of the sliver and<br />
for this reason, their surface quality is extremely important.<br />
The XR coating was developed precisely for this<br />
application. It exhibits an extraordinary wear resistance<br />
which stems from its very high degree of<br />
hardness and the na<strong>no</strong>-structured layer construction.<br />
Due to the special XR process, the roughness of the<br />
surface is exactly the same as with an uncoated calander<br />
disc. This very smooth, fiber-gentle surface<br />
characteristic is retained by the homogeneous layer<br />
structure over the entire life cycle. This assures consistent<br />
measurement and quality of the sliver over a<br />
significantly longer period of time. 12-113 •<br />
29
30 LINK <strong>59</strong> . 1 /2012<br />
RIETER INSIDE<br />
The Comfort of Competence –<br />
the video clip<br />
Advertising spots tell us entire stories every day – in the space of a few<br />
seconds. <strong>Rieter</strong>’s total offering, the advantages enjoyed by <strong>customer</strong>s<br />
with <strong>Rieter</strong> as their <strong>systems</strong> supplier – these are explained in the<br />
“The Comfort of Competence” campaign. A brief, unconventional advertising<br />
spot illustrates the new campaign in an exciting way.<br />
Fig. 1 Behind the<br />
scenes: video recording<br />
of the textile trial.<br />
Fig. 2 The camera<br />
focuses on the <strong>Rieter</strong><br />
sales engineer.<br />
Fig. 3 Perfect lighting<br />
of the scene for the<br />
video clip.<br />
“The Comfort of Competence” is the <strong>customer</strong> benefit<br />
provided by <strong>Rieter</strong> Spun Yarn Systems. <strong>Rieter</strong> is<br />
a strong, competent partner, dedicated to making<br />
<strong>customer</strong>s’ lives easier by offering care and support<br />
from the initial investment discussions to the successful<br />
operation of a spinning mill.<br />
1 2<br />
3<br />
The new advertising spot illustrates just this message<br />
and puts the focus on the comfortable armchair,<br />
which serves as a metaphor for <strong>Rieter</strong>’s machines<br />
and services.<br />
The history of a project with <strong>Rieter</strong><br />
The spot shows a project undertaken with <strong>Rieter</strong> in<br />
simplified form. It starts with discussions between<br />
a <strong>customer</strong> and a <strong>Rieter</strong> salesman, who provides the<br />
<strong>customer</strong> with expert advice on all 4 spinning processes.<br />
The signed project is then laid out in 3D on<br />
the computer and adapted to the <strong>customer</strong>’s wishes.<br />
<strong>Rieter</strong> then conducts various textile trials with<br />
the <strong>customer</strong>’s raw material in order to establish the<br />
precise spinning parameters. The machines supplied<br />
are installed quickly and reliably in a coordinated<br />
team effort by <strong>Rieter</strong> fitters. Before the installation<br />
is handed over to the <strong>customer</strong>, quality tests are performed<br />
– and certified after successful completion.<br />
<strong>Rieter</strong> celebrates the climax of these operations – the<br />
handover of the installation – together with the <strong>customer</strong>.<br />
The satisfied <strong>customer</strong> raises his glass with<br />
<strong>Rieter</strong> employees in a toast to the successful completion<br />
of the project.<br />
Now watch it!<br />
Visitors to our exhibition stand at the ITMA in Barcelona<br />
were already able to watch the new advertising<br />
spot or were shown it on an iPad by a <strong>Rieter</strong> sales<br />
engineer.<br />
The advertising spot is <strong>no</strong>w accessible for viewing<br />
on the <strong>Rieter</strong> website. Use this printed QR code to<br />
view it in comfort on your mobile<br />
phone. 12-114 •<br />
Michel Gelin<br />
Senior Marketing Manager<br />
Winterthur<br />
michel.gelin@rieter.com<br />
http://bit.ly/IC1dEN
Presentation of the <strong>Rieter</strong> Award<br />
in Vietnam<br />
In 2011, the coveted <strong>Rieter</strong> Award was once again presented to a student<br />
from Vietnam. Winner of the <strong>Rieter</strong> Award was Ms. Le Nguyen Bao<br />
Quyen from the Technical University in Ho Chi Minh City. In her student<br />
research project, Ms. Le selected a very interesting branch in the diversified<br />
field of textile applications by examining <strong>no</strong>n-woven fabrics.<br />
The <strong>Rieter</strong> Award winners 2011 on their visit to the <strong>Rieter</strong> headquarters in Winterthur<br />
(Switzerland). Front row, from the left: Qin Wang (China), Le Nguyen Bao Quyen (Vietnam),<br />
Nazan Erdumli (Turkey). Back row, from the left: Pavel Murychau (Belarus), Kashif Nadeem<br />
(Pakistan), Avinash Kesaraju (India). Mr. Md Almirany from Bangladesh is missing on the<br />
photo. To our regret, he was <strong>no</strong>t issued with a visa and could therefore <strong>no</strong>t participate in the<br />
<strong>Rieter</strong> Award week.<br />
LINK <strong>59</strong> . 1 /2012<br />
RIETER INSIDE<br />
Left to right: Rolf Zimmermann, <strong>Rieter</strong> Sales Engineer Asia/Orient,<br />
Thomas Kuettel, <strong>Rieter</strong> Head Sales Area Asia Pacific & Orient,<br />
Le Nguyen Bao Quyen from Vietnam, winner of the <strong>Rieter</strong> Award<br />
2011, Reto Thom, Head Sales.<br />
The <strong>Rieter</strong> Award consists of two components: an individual<br />
distinction in the winner’s home country and<br />
a trip to <strong>Rieter</strong> in Switzerland. The prize trophy and<br />
the accompanying certificate were handed over to<br />
Ms. Le during the <strong>Rieter</strong> symposium in Ho Chi Minh<br />
City in Vietnam. The event, which took place on 25.<br />
October 2011, was attended by more than 100 representatives<br />
of 36 <strong>customer</strong>s from the southern regions<br />
of Vietnam. The ceremonial prizegiving met with a<br />
great reception by all the guests, with particular tribute<br />
also being paid to <strong>Rieter</strong>’s support and promotion<br />
of young textile science students.<br />
On the occasion of the <strong>Rieter</strong> Award week in September<br />
2011, Ms. Le travelled together with all other<br />
prizewinners from around the globe to spend seven<br />
days in Switzerland including a trip Barcelona to visit<br />
the ITMA 2011.<br />
This gave Award winners the chance to get to k<strong>no</strong>w<br />
<strong>Rieter</strong> as a company and its employees and they had<br />
the unique opportunity to study the latest in<strong>no</strong>vations<br />
of the textile machine industry at close quarters. –<br />
A summit meeting for the “textile future”. 12-115 •<br />
Rolf Zimmermann<br />
Regional Sales Manager Asia / Orient<br />
Winterthur<br />
rolf.zimmermann@rieter.com<br />
31
www.rieter.com<br />
<strong>Rieter</strong> Machine Works Ltd.<br />
Klosterstrasse 20<br />
CH-8406 Winterthur<br />
T +41 52 208 7171<br />
F +41 52 208 8320<br />
sales.sys@rieter.com<br />
parts.sys@rieter.com<br />
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Download it <strong>no</strong>w from www.rieter.com/rikipedia<br />
<strong>Rieter</strong> India Private Limited<br />
Gat No 134/1, Off Pune Nagar Road<br />
Koregaon Bhima<br />
Taluka Shirur, District Pune<br />
IN-Maharashtra 412207<br />
T +91 2137 253 071<br />
F +91 2137 253 075<br />
<strong>Rieter</strong> Textile Systems (Shanghai) Ltd.<br />
12/F, New Town Centre<br />
No. 83 Loushanguan Road<br />
CN-Shanghai 200336<br />
T +86 21 6236 8013<br />
F +86 21 6236 8012