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The customer magazine of Rieter Spun Yarn Systems
Vol. 22. / No . 55 . June 2010 / EN
link 2
/2010
04 RIETER INSIDE Quality – a Rieter tradition 09 EVENTS ITMA ASIA + CITME 2010 in Shanghai
10 TRENDS & MARKETS Rieter in China – a trustworthy partner 22 TECHNOLOGY RIKIPEDIA – Rieter’s
technology know-how, free of charge and online

2 LINK 55 . 2 /2010
CONTENTS
Cover:
Panorama view of Shanghai
©www.istock.com
Publisher:
Rieter Spun Yarn Systems
Editor-in-chief:
Nadia Qaud
Copyright:
© 2010 Rieter Machine Works Ltd.,
Klosterstrasse 20, CH-8406 Winterthur,
www.rieter.com, rieter-link@rieter.com
Reprints permitted, subject to prior approval;
specimen copies requested.
Design and production:
Marketing Rieter CZ s.r.o.
03 EDITORIAL
RIETER INSIDE
04 Quality – a Rieter tradition
Modern quality assurance involves global, forward-looking
planning throughout the process chain in a way that can
be appreciated by everyone. How does Rieter usher old
traditions onto new paths?
07 Customer satisfaction management at Rieter
EVENTS
09 ITMA ASIA + CITME 2010 in Shanghai
Our customers benefit from Rieter’s technology know-how
with innovative spinning machinery and systems from
Rieter. See for yourself at the ITMA Asia + CITME 2010
in Shanghai.
TRENDS & MARKETS
10 Rieter in China – a trustworthy partner
“Rieter – innovation leader” is Rieter’s success-defining
motto in China. A manufacturing plant was established in
China in 1998 to enable China’s emerging textile industry
to be supplied rapidly.
12 Recycling comber noil in the rotor spinning mill
OUR CUSTOMERS
14 ComfoRo® – the license for successful spinning mills
PRODUCT NEWS
16 The new upgrade package for R 20 robots
18 A marvel of engineering – the RSB-D 221
TECHNOLOGY
19 Optimal use of resources in compact spinning
22 RIKIPEDIA – Rieter’s technology know-how – free of
charge and online
Wikipedia – the Internet encyclopedia – has changed the
world. With the new RIKIPEDIA, Rieter is presenting textile
know-how from “The Rieter Manual of Spinning” series of
volumes on the Internet.

Rieter’s textile activities have had their headquarters
in Switzerland since 1795. And ever since that
time Rieter has been committed to customer satisfaction
and product quality.
ISO-certified manufacturing facilities worldwide
Over the course of time additional manufacturing
facilities and assembly lines have been established
in Germany, the USA, the Czech Republic, India
and China. The Rieter production plant in the Czech
Republic has been operating successfully since
1994, the branch in China since 2001 and the unit in
India since 2005, to the complete satisfaction of our
customers. As an integral part of our quality strategy,
all our manufacturing sites are certified for compliance
with ISO 9001.
Key components and technology elements are developed
and produced in Europe. We have already relocated
many labor-intensive operations to markets
outside Europe without any loss of quality for many
years. "Made by Rieter" stands for quality, no matter
where the individual components are manufactured
and assembled.
Central functions are based in Europe
Rieter’s competence network is international in
scope. Headquarters in Winterthur are of central importance;
this is where all global activities are coordinated:
marketing, sales, product development,
production planning, quality assurance, logistics,
spare parts offerings, service and technology support.
The further development of products will also remain
the responsibility of specialists in Europe in future.
Nowadays, however, there is greater emphasis
on global cooperation with technical colleagues in
China and India, and a closer focus on local customer
and procurement markets. Production planning is
centralized in Winterthur and quality specifications
are defined in conformity with Swiss and German
standards and implemented in Rieter’s own production
plants. All Rieter machines are manufactured in
conformity with these specifications worldwide. Our
quality managers report on how Rieter implements
this complex task in this issue of Link.
LINK 55 . 2 /2010
EDITORIAL
In addition to this centralized control of global operations,
we attach great importance to local contacts
for our customers in the marketplace and to the
fact that they receive optimal support in sales, spare
parts offerings and service. True to the motto: “Think
global, act local.”
Customer satisfaction is top of the list
Our main goal is to ensure customer satisfaction.
Our objectives are: comprehensive support for our
customers by our sales organization, complete and
timely delivery and installation of machinery and
retrofits, rapid spare parts and repair service, expert
technology support, economical yarn production and
the sustained quality of our products. We conduct
regular surveys to measure whether we achieve these
goals in our customers’ eyes. In this way we ensure
that deviations from our standard are detected and
quickly rectified. You can read more about Rieter’s
customer satisfaction management on page 7.
Ecological aspects of spinning operations
Ecology and economy go hand-in-hand. Saving resources
in every industrial process helps to conserve
the world’s environment and reduce costs. Rieter’s
developments have focused for many years on energy
savings and high fiber utilization. Two reports on
experience by customers in India show how resources
can be saved in both ring spinning and rotor
spinning. Rieter offers conversion kits and professional
overhauls in order to prolong the service lives
of older machine generations and maintain efficiency
at a high level.
Rieter will and must continue to change in future.
We will continuously adapt our organization and our
products to the market’s requirements. Our promises
to our customers remain unchanged. 10-100 •
Peter Gnägi
CEO Rieter Textile Systems
Winterthur
peter.gnaegi@rieter.com

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RIETER INSIDE
Quality – a Rieter tradition
Modern quality assurance involves global, forward-looking planning
throughout the process chain in a way that can be appreciated by everyone.
How does Rieter usher old traditions onto new paths?
Fig. 1 Quality
assurance with modern
measuring technology
– D coordinate
measuring instrument
in operation.
The term “quality” is derived from the Latin (qualitas)
and means attribute, characteristic, property,
condition. The attributes a product has to display in
order for customers to be satisfied depend on the individual
customer’s expectations. There is therefore
no such thing as absolute quality, only customerspecific
quality. Quality means meeting the customer’s
expectations. Under-fulfillment of expectations
is out of the question for us. Over-fulfillment should
be our goal, while having due regard for costs.
Examples of quality in everyday spinning operations
A fancy weaving mill producing high-quality shirting
fabrics sets different quality standards for a yarn
from those of a knitting mill using the yarn to produce
T-shirts. In the first case combed ring-spun yarn
made from long-staple cotton with a tensile strength
of 20 cN/tex is used, in the second case a rotor-spun
yarn with 15 cN/tex. Two completely different quality
requirements – but each adapted precisely to the
intended application. The customer’s expectations
in terms of price/performance ratio are met and can
be measured with a testing instrument in the textile
laboratory.
Quality has to be defined
How is quality defined in textile machinery manufacturing?
Here also, customers are only satisfied if the
actual outcome corresponds to their requirements.
Armand V. Feigenbaum (1920), a leading American
theorist in the field of quality management, defines
quality as the customer’s conception, based on his
present experience with a product or service, which
is measured against his spoken or unspoken requirements.
Quality is a moving target in the market environment
and is defined by the customer. This simply
means that when spinning machines are being purchased,
the product has to fulfill both spoken expectations
and unspoken wishes.
What customers require from spinning machines
Diverse requirements are imposed on a product.
Question after question has to be answered before a
purchase is made. The first question of all is whether
the investment is worthwhile for the customer and
how the product performs compared to its competitors.
Whether the product is suitable for its intended
use can be established through references or by customer-specific
tests.
What options does the product offer and how flexibly
can it be used? Is the product service-friendly?
How reliable is the service offering? What additional
facilities does a manufacturer provide, during and
after sales? How attractive is the design of the product?
Has the product been manufactured in an environmentally
friendly way? Have safety guidelines
been adhered to? Is manufacturing quality adequate?
A product’s reliability and durability only become
apparent in operation. In this respect the customer
must be able to count on reliable statements by quality
management and the manufacturer.
Communicative and constantly changing
For 215 years Rieter has successfully embodied
these spoken and unspoken customer requirements
in its products. This is a tradition based on our virtues.
Our sales personnel and marketing specialists
have sound textile training, are prepared to listen,
and can empathize with customers’ feelings and ideas.
Our service personnel contribute their feedback
and experience. Personnel in the engineering departments
take concerns seriously and work on improvements.
Good, long-term customer relationships mean that
customers can express their requirements, wishes or
doubts loudly and clearly.
Feedback from customers is incorporated in Rieter’s
products. Sometimes not quite as quickly as customers
would like. New ideas are developed quickly,
but field testing and any necessary corrections take
time. The time required, cost and risk are all factors
at work here, and it takes experience and teamwork
to find the optimum solution.

Quality-related actions
Quality planning
during development
Product service life
Machine
prototype
Fig. 2 Quality assurance
has to operate in all
product phases.
Pilot
series
Quality assurance
during manufacturing
Volume
manufacturing
Quality improvements
throughout service life
Time
How does Rieter assure product quality?
When a new generation of machines is being planned,
customers’ needs, the requirements of the sales and
service organizations, findings from product utilization
as well as scientific and engineering innovations
are incorporated in the process.
Product quality at Rieter is influenced at various
stages throughout the product’s life cycle. The three
main stages are: quality planning, quality assurance
and quality improvement. The first stage, quality
planning, takes place during the development of the
machine – with extensive prototype and pilot series
tests. The second stage is quality assurance during
pilot series and volume manufacturing. The planned
measures are put into practice and tested. The third
phase is quality improvement during volume manufacturing
(Fig. 2).
Quality management – the basis for quality at Rieter
Comprehensive quality assurance means that the
concept of quality has to be inherent in all corporate
processes. This is an important concern of Peter
Gnägi, CEO of Rieter Textile Systems: “The focus of
Rieter employees on our quality philosophy is the
foundation on which all our products are based.
We attach great importance to an organization that
focuses on customer benefits and quality management
without losing sight of costs. We have to avoid
both quality defects and excessive quality goals.”
LINK 55 . 2 /2010
RIETER INSIDE
Certified quality management has been in practice at
Rieter for more than 17 years. The first ISO certification
was obtained by the Rieter foundry in Winterthur
in 199 . This was followed by certification of
the plant in Ingolstadt, Germany, in 1994, and the
machine works in 1996. The manufacturing plants in
the Czech Republic have been certified since 1997.
The Changzhou plant in China was certified in 2006
and the Wing manufacturing site in India has been
awarded ISO 9001 certification this year. A quality
management system stipulates how processes and
workflows are organized within a company. Communication
media and chains are also defined, since
communication is increasingly important in the global
organization of a manufacturing network.
Peter Oehy, Head of Quality Management, has been
responsible from the outset for introducing and enforcing
quality management worldwide: “Quality
must be produced and not achieved by testing.
Qualified specialist craft training in Europe makes it
easier to comply with quality specifications here. Indepth
appreciation of quality results in a greater degree
of self-checking in all processes. In India and
China we rely on more outside checks and additional
training. After the appropriate action was taken in
India and China, quality results have improved further.
We have translated the quality guidelines in our
Integrated Management System (IMS) into employees’
native languages in order to prevent misunderstandings.
This effort has paid off. At Rieter each and
every employee is responsible for quality, from shop
floor to top management.”
Quality planning – part of product development
Centralized quality planning for all products is performed
in our European plants and already begins
during product development. In order to optimize
manufacturing quality in the early stages of development,
interdisciplinary teams from a wide range of
departments already cooperate during the development
phase: development engineers, technologists,
production and quality specialists optimize new
components and machines. While some pay attention
to functional and technical aspects, others optimize
technical manufacturing requirements. At the
same time the main features are defined in a measurable
way.
5

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RIETER INSIDE
Communication media and chains at Rieter in the field of quality
Volume production release Feedback from customers
via Sales and Service
Pilot series release
Quality
assurance
Installation audits
SAP production planning
system incl. quality specifications
Fig. 3 CORN
– Rieter’s central database
for gathering
problems and ensuring
their solution.
Fig. 4 Modern
technology assists
in measurement: a
microscope camera.
Quality
planning
SAP
Quality
management
ISO 9001
CORN – Workflow
CORN
Customer satisfaction
survey
Problem-gathering
in the CORN database
Quality
improvement
Quality assurance – pure measuring technology
“It may not seem particularly exciting at first glance,
but when it comes to quality, much revolves around
measuring technology. No complicated philosophy,
just unspectacular, fact-based measuring technology,
seasoned with some statistical know-how,” explains
Peter Oehy, who is responsible for global
quality management. “It involves measuring geometrical
variables and material definitions just as much
as achievable yarn values, delivery dates or cost targets.
Quality assurance without measuring technology
is like a tiger without teeth.”
Some incoming goods inspection entails random
sampling, while important components are subject
to 100% inspection. Testing stations for subassemblies,
electronic components, robots and sections
assure quality. More than 60 employees are engaged
in quality assurance in the 5 manufacturing facilities
worldwide.
Continuous quality improvement
If quality problems emerge in customers’ mills,
Rieter has defined processes and the people responsible
in order to identify and rectify them as quickly
as possible. Every instance of negative feedback
from customers is taken seriously, documented and
passed on to the appropriate unit by sales personnel,
technologists or service technicians. All reports are
recorded in the CORN (Customer Oriented Rieter Network)
data system developed by Rieter and marked
off as dealt with only after the defect has been rectified.
The creative members of the quality improvement
team try to find rapid, long-term solutions.
Communication with quality assurance is important
in order to prevent further defects in production, as
well as feedback to the Development Department if
design defects are the cause (Fig. ).
What does “Quality made by Rieter, Switzerland”
stand for?
The quality concept has been taken to heart and further
developed at Rieter for more than 200 years.
Products and services are continuously being adapted
to market requirements. Implementation is
governed by precise quality guidelines which are defined
identically worldwide – regardless of the country
from which Rieter products are delivered.
The quality management system and its three pillars
of quality planning, quality assurance and quality
improvement are important components of compliance
with quality specifications. The skill lies not
only in the method, but in the discipline of applying
it globally and systematically, in an interdisciplinary
way.
We are driven and motivated by the criticism and
recognition we receive from our customers. The
measure of our success is always reflected in the satisfaction
of our customers. 10-101 •
Peter Oehy
Head of Quality Management
Winterthur
peter.oehy@rieter.com
Nadia Qaud
Project Manager Marketing
Winterthur
nadia.qaud@rieter.com

Customer satisfaction
management at Rieter
Satisfied customers are the key to success. That’s why Rieter spares
no effort to satisfy customers with its products and services.
Fig. 1 Completing the
Rieter questionnaire
online is easy and fast.
Customer satisfaction or dissatisfaction is the result
of a comparison between expectations and the service
received. If the actual service exceeds our expectations,
we are satisfied, if it falls below them, we
are dissatisfied. Our expectations are influenced by
various factors, such as our personal standards, the
supplier’s image and the experiences we have had
with other suppliers.
Satisfied customers are more loyal
Satisfied customers buy again, either the same product
or another one, and recommend the supplier to
others. This willingness to pass on recommendations
is an expression of the highest degree of customer
loyalty, since in this case the customer backs up the
supplier’s product with his own name.
LINK 55 . 2 /2010
RIETER INSIDE
“Delight our Customers” is one of the Rieter Group’s
core values. If we meet our customers’ expectations
and supply them with Rieter quality we are successful.
Customer satisfaction management at Rieter
These were the reasons why Rieter introduced a
method of systematically measuring customer satisfaction
at the end of 2007. This provides us with
direct feedback from our customers that is comparable
between products. We had already conducted
surveys earlier.
Now we survey customer satisfaction at shorter intervals
and at the personal level. Personalized surveys
enable us to intervene with corrective action
immediately.
Once a month we send an online questionnaire to
customers who have reached a certain point in the
customer process. At each of these points we survey
satisfaction with the service received to date.
�
�
�
After concluding a sale we want to know how satisfied
the customer is with the service provided by
our sales department and our agent.
After commissioning we want to know how the
customer rates the delivery and commissioning of
our machines.
Six months after the warranty period has expired
we are interested to know how satisfied the customer
is with our machine / installation, our customer
service and our spare parts service.
Most customers are satisfied with Rieter
Since December 2007 we have sent questionnaires
to 1 465 customers. 282 customers responded to
our request and returned a completed questionnaire.
This corresponds to a response rate of 19.2%, which
is an acceptable figure for a written questionnaire.
However, we would be pleased to receive feedback
from more customers providing us with pointers on
what can be improved. The average level of satisfaction
in all areas is between 4.4 and 5.5 on a scale of
1 to 6, where 1 is the lowest and 6 the highest rating
(Fig. 2).
7

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RIETER INSIDE
Fig. 2 Rieter gets
good ratings from
its customers – but
there’s always room
to improve.
Customer satisfaction in different areas
Scale: 1 = dissatisfied 6 = satisfied
6
5
4
2
1
Sales Delivery Commissioning Machines Customer
service
1 st half of 2008 2 nd half of 2008 1 st half of 2009 2 nd half of 2009
What do we do with customer feedback?
It’s important for us to take appropriate action to
achieve our customer satisfaction targets and be
able to resolve the problems reported. Rieter takes
action if negative feedback is received from many
customers on the same subject, but also if a single,
significant negative rating is received. Once a year
we analyze all questionnaires as a whole in order to
introduce improvements to our service offering. If a
customer makes a critical assessment of our products
and services, the person responsible in the area
concerned is informed and then seeks the cause of
the negative assessment and takes steps to eliminate
it.
Fast, efficient problem-solving is a major factor
in customer satisfaction
In the area of customer service most customers complain
that service personnel do not visit the company
often enough. If a customer complains about this,
the customer service operations manager schedules
a visit to him. We received feedback of this kind from
a customer in Iran just when a service technician
was visiting Iran. He was immediately instructed to
make a call on the customer during that same trip.
The customer later telephoned the operations manager
to express his thanks for this prompt response.
Expectations cannot always be met so promptly.
Nicole Balhuber
Spare parts
service
Feedback from our customers is important to us
We want to take this opportunity to express our sincere
thanks to all customers who have taken the time
to complete our questionnaire.
We would like to request all others to complete the
questionnaire next time. Frank, honest feedback addressing
faults and problems helps us. It provides
Rieter with valuable pointers for the further improvement
and expansion of our products and services –
from which you as customers then also benefit.
10-102 •
Head Marketing Support
Winterthur
nicole.balhuber@rieter.com

ITMA Asia + CITME 2010
in Shanghai
Our customers benefit from Rieter’s technological expertise with innovative
spinning machines and systems from Rieter. See for yourself at
the ITMA Asia + CITME 2010 in Shanghai. The brand-new G 32 ring spinning
machine will be unveiled there.
Minister DU informed
himself about Rieter
technology from yarn
to fabric at the ITMA
Asia + CITME 2008.
Alongside the E 66 comber, which is already successfully
established on the market, Rieter will present
the brand-new G 2 ring spinning machine on Booth
B 0 in Hall W 2 at the ITMA ASIA + CITME 2010 in
Shanghai. In addition to these two main attractions,
samples and end products made from ring-spun
yarn, Com4® compact yarn, ComfoRo® rotor-spun
yarn and ComforJet® airjet-spun yarn can also be
seen on the Rieter booth.
G 32 ring spinning machine
The G 2 ring spinning machine is a new development.
With up to 1 440 spindles and an outstand-
LINK 55 . 2 /2010
EVENTS
ing price/performance ratio, this machine has been
developed specifically to meet the needs of the new
markets in Asia. The accustomed production quality
and efficiency familiar from Rieter ring spinning
machines are reflected in the G 2. Well-established
functions such as ROBOdoff automated package
changing or doffing without underwinding by means
of SERVOgrip are integrated. The G 2 ring spinning
machine is ideal for customers wishing to update
their installations with long doffer ring spinning machines.
E 66 comber
72 kg/h of combed sliver – that is the actual output
of the semi-automatic E 66 comber. Its development
was based on wide-ranging experience gained in recent
years with more than 7 800 combers sold. Together
with computer-aided process development
– C�A�P�D C�A�P�D500 – the combing process has been optimized
with regard to motion, loading and consumption
of air and energy. The high output of 72 kg/h is
achieved at 500 nips/min, 80 g/m batt weight, superior
running behavior and top quality.
Technological leadership
As a systems supplier of all spinning systems available
on the market, Rieter will illustrate – by means of
a wide range of woven and knitted samples as well as
various end products – the specific characteristics of
each spinning system and offer comprehensive technology
consulting on its exhibition booth.
Rieter’s leading role in technological expertise is evident
in the optimization of the process as a whole
– from fiber preparation to spinning. Increasing
numbers of spinning mills are using Rieter’s blowroom
line, combing line and autoleveler drawframes
to manufacture extremely fine slivers in order to
achieve higher efficiency in airjet spinning. 10-104 •
Edda Walraf
Head Marketing
Winterthur
edda.walraf@rieter.com
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TRENDS & MARKETS
Rieter in China –
a trustworthy partner
“Rieter – innovation leader” is the success-defining motto of Rieter in
China. A manufacturing plant was established in China in 1998 to enable
China’s emerging textile industry to be supplied rapidly. The formation
of “Rieter China” is a further step toward getting even closer to
the market.
Fig. 1 Rieter, established
in 1795, has
been active in China
since 1927.
Fig. 2 Interested
customers at the ITMA
Asia + CITME 2008 in
Shanghai.
Rieter has been supplying machinery to China for 80
years and is a recognized market leader in the field of
spinning machinery for short staple fibers. Its good,
long-term relationships with Chinese customers are
based on Rieter’s technological leadership and continuous
innovation. Speaking the customer’s language
is a further building block of Rieter’s success
in China.
China’s economic development
The People’s Republic of China’s “socialist market
economy” is a combination of economic planning
and free market economy. Government stimulus programs
are set out in 5-year plans and serve to establish
new technologies in the country. Since the
start of liberalization the textile machinery, textile
and garment industries and the manufacture of manmade
fibers are being vigorously promoted in China.
ITMA Asia + CITME – Asia’s key trade show
According to ITMF statistics, 82.6% of ring spinning
capacity and 46.1% of rotor spinning capacity in the
short staple sector were installed in Asia in 2008.
This market shift toward Asia, and to China in particular,
has already been apparent for some years.
Trade show organizers have adjusted to this market
trend and focused on the Chinese market. ITMA Asia
and CITME were combined for the first time in 2008
and relocated from Singapore to Shanghai.
Rieter’s activities in China
Rieter delivered its first spinning machines to China
as long ago as 1927. In order to serve the Chinese
market from a local base, the sales office has been
moved from Hong Kong to Shanghai. With the acquisition
of ICBT in 2001, the manufacturing plant es-
tablished in 1998 also came into Rieter’s possession.
It is located in Changzhou, on China’s west coast,
200 km west of Shanghai. Initially, only components
for textile machines were produced in this plant.
Once compliance with strict Swiss quality specifications
was assured, manufacturing operations were
expanded. Manufacturing complete textile machines
for the local market eliminates import duties and exchange
rate risks for Chinese customers.
The plant in Changzhou has been certified for compliance
with ISO 9001 since 2005 – thus guaranteeing
conformity with quality specifications stipulated
by international standards. The production plant
was extensively expanded in 2006. Modern production
lines – from sheet metal production to final assembly
– are installed on floor space of 24 000 m 2 .
Further expansion is planned.
Rieter China established in 2005
The expansion of Rieter’s presence in China is reflected
not only in the increase in production capacity.
Rieter’s organization has also been adapted
accordingly. The Rieter China business unit, a wholly
owned subsidiary of Rieter Ltd. in Switzerland,
was formed in 2005 and currently employs a workforce
of more than 600. Sigi Föhn, Head of Rieter
China, explains its strategy as follows: “A major goal
of Rieter China is the adjustment of the product portfolio
to the requirements of the Chinese market. This
is supported by a local market organization in China
which is in constant contact with customers and enables
customers’ wishes to be incorporated in product
planning.”

Fig. 3 Rieter’s
manufacturing plant in
Changzhou.
The service provided by the local sales organization
has been expanded. Rieter operates five sales offices,
which are distributed throughout the country. They
are located in Shanghai, Beijing, Jinan, Urumqui and
Hong Kong. By way of a pre-sales consulting service,
mill plans for new spinning installations are drawn
up in Shanghai, and since the beginning of this year
these are available as D images. Service deployment
headquarters are located in Shanghai. 20 service
technicians are deployed throughout China and
are supported by specialists from Switzerland where
necessary. A further service center was opened in
Urumqui in 200 , the spare parts warehouse in
Changzhou was expanded in 2008, and the electronics
service center in 2009. The main electronic and
mechanical spare parts are stored in Changzhou so
that they can be delivered to customers quickly.
Technology support in China
Rieter China is a major manufacturing location,
supported by the parent company in Winterthur,
Switzerland, in textile technology, research and development.
Bruno Schenk heads the spinning center
in Changzhou, where 4 textile technologists are employed.
“We have a card, a combing system, an autoleveler
drawframe, a K 44 ring spinning machine,
and an R 40 and an R 92 rotor spinning machine
installed; these are available for customers’ spinning
trials and customer training. We are happy to have
our customers present at spinning trials. Then they
can experience the advantages of the machine live.”
Rieter’s machines are considerably more productive
than local machines. This is most clearly apparent in
LINK 55 . 2 /2010
TRENDS & MARKETS
the case of cards, combers and drawframes, as well
as ring and rotor spinning machines. The high performance
of Rieter machinery is the result of years of
development and keen competitive pressure in Europe.
High output reduces costs. As a systems supplier,
Rieter knows exactly how to coordinate machines
in the process chain in order to achieve high yarn
quality with high output. Extensive textile technology
research is continuously being conducted. This
provides the basis for the further development of the
machines and process optimization, as well as for
publications and presentations at conferences.
Rieter has published the “Rieter Manual of Spinning”
to enable textile trainees to benefit from its wealth of
know-how and provide textile specialists with rapid
access to fundamental knowledge.
The basic principles of staple fiber spinning are explained
in 6 volumes. Volume 1 is already available
in Chinese, and volumes 2 – 6 will appear as of June
2010. These volumes have been available for ordering
via the Internet since February 2010. The Chinese
edition can be ordered at:
http://www.chinayarn.com/books/list.asp?id=4 1
Rieter’s plans for the future
On the basis of the positive growth rates achieved
in recent years, China has become a key market for
Rieter. Only long-term, close customer relationships
hold the promise of success. Rieter’s plans for China
are also based on this principle. Rieter is constantly
expanding the offering of its sales organization and
the quality of its service facilities.
The next highlight will be the ITMA Asia + CITME
2010, where Rieter will exhibit its innovations.
Rieter’s sales team is looking forward to the opportunity
of welcoming numerous visitors there. 10-10 •
Heiner Eberli
Head Sales China
Shanghai
heiner.eberli@rieter.com
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TRENDS & MARKETS
Recycling of Comber Noil in Rotor
Spinning
Use of comber noil and carding waste for making yarns of specific application
is well known. However, Rieter R 40 and R 923 provide the optimum
technology to achieve economical raw material use.
Fig. 1 The green
solution for spinning
recycled materials-
R 92 (above) and
R 40 (below) rotor
spinning machines.
Tab. 1 Raw material blend and costs for Ne 12
Operating a green business is as well good for the environment
as good for the business bottom line because
conserving resources saves money.
Recycling involves processing used materials into
new products to prevent waste of potentially useful
materials, reduce consumption of fresh raw materials,
reduce energy usage and reduce pollution.
Spinning mills can take a large step towards being
more environment friendly by reducing the amount
of waste in their textile business operations and
achieve economy by reducing raw material costs.
The open end spinning is one such process that helps
in converting the waste materials that are generated
during spinning processes, into new materials or
products of high quality. The rotor spinners in India
use carding and comber wastes to produce coarser
counts like Ne 6s, 10s 14s, and 16s which are predominantly
used in making home textiles and also
apparels.
Count Mixing Cost of raw each material Cost of blended raw
material
Ne 12
50% comber noil 55 kg/h, 48 INR/kg, (0.70 EUR) 110 kg/h
56.5 INR/kg (0.82 €/kg)
50% Cotton (J 4) 55 kg/h, 65 INR/kg, (0.94 EUR)
Tab. 2 Raw material blend and costs for Ne 18
Count Mixing Cost of raw each material Cost of blended
raw material
Ne 18
25% comber noil 55 kg/h, 48 INR/kg (0.70 EUR)
15% card droppings kg/h, 28 INR/kg (0.40 EUR)
60% cotton (J 4) 65 kg/h, 65 INR/kg (0.94 EUR)
220 kg/h
55.2 INR/kg
(0.80 EUR/kg)
Rieter offers to its customers the robust R 92 semiautomated
rotor spinning machine and R 40, the fully
automated rotor spinning machine, both known
for their fast and very easy operations. The latest
technology provided in the machine helps in producing
superior quality yarns in a cost-effective way.
The economy of modern Rieter machines is based on
energy consumption, minimum labor cost combined
with effective support of operators, fast doffing and
easy package removal.
Economy in raw material preparation
In a ring spinning mill producing combed counts,
five high performance combers like Rieter E 66/E 76,
generates 55 kg of comber noil per hour. This gives
the possibility to generate an income of 22.7 Mio
INR ( 0 000 EUR) per annum by selling the noil
in the market at the current rate of 48 INR per kg.
However, a quantum value increase is possible when
mills spin yarns for specific applications by mixing
the comber noil with virgin cotton. Table 1 shows
mixing details for two different counts and the economy
of raw material cost that can be achieved with
effective mixings considering 8 600 working hours
per year (exchange rate 69 INR = 1 EUR).
For count Ne 12, it is possible and feasible to mix
only comber noil with virgin cotton to achieve the
desired yarn values. For yarn count such as Ne 18, it
is required to have some long fibers to achieve optimum
strength in the yarn. This is possible by mixing
smaller amounts of card droppings in the raw material
mixings. Table 2 shows the even more economical
costing of such a raw material mixing for Ne 18.
Advantages of short rotor spinning process
A Rieter rotor spinning line consists of a short opening
line with high production cards, one drawframe
passage and rotor spinning machine with yarn clearer
producing ready to use yarn packages.

Tab. 3
Details Mill sample with 50%
comber noil, spun on R 923
The advantages are compared to classical carded
ring yarns are:
� Good yarn quality even with high short fiber
content
� Good evenness in drafting because of re-doubling
� Reasonable strength for weaving
� Few joints in the package (only 0- per 2.4 kg
package). Number of joints is 1/ 0 to 1/40
compared to ring yarns
� Short fibers can improve hairiness and hand
without direct impact on pilling.
� Less waste in downstream processing with bigger
packages (>5kg) and exact length measuring
(deviation

14 LINK 55 . 2 /2010
OUR CUSTOMERS
ComfoRo ® – the license for
successful spinning mills
The ComfoRo® license, an eagerly utilized opportunity for differentiation
in a keenly contested market environment. A trademark offering advantages
for rotor spinning mills on the yarn market.
Handing over the ComfoRo® license to the
Zhanjang company. Left to right: Wang Si
Yu (General Manager), Yang Liu (President)
and Dr. Stephan Weidner-Bohnenberger
(Product Management Rotor, Rieter).
Faultless rotor yarn featuring yarn-like piecings in
quality unequaled to date is being produced since
the launch of AEROpiecing® piecing technology on
the R 40 rotor spinning machine. The ComfoRo®
brand has been created for this quality, and Rieter
has had ComfoRo® registered as a trademark for
yarns and textile products.
ComfoRo® marketing started in 2005. Since 2006
ComfoRo® has been marketed together with other
Rieter yarns, such as Com4®, at yarn and fabric
trade shows including Texworld in Paris and Intertex
in Shanghai.
What does the license package include?
This brand strategy has already convinced numerous
customers worldwide, and they have applied to
Rieter for a license to use the ComfoRo® brand. Rieter
grants this license to customers who own machines
with AEROpiecing® technology and are prepared to
meet the market’s high quality expectations.
Handing over the ComfoRo® license to the Safteks
Iplik company. Left to right: Erkan Atesler, Sales
Engineer (Erbel, Rieter’s agent in Turkey), Fahrettin
Cicekci (proprietor of Safteks Iplik / Kahramanmaras),
Jürgen Seuberling (Rieter sales engineer, Turkey).
After signing a license agreement, the customer receives
a “Starter Kit” consisting of:
� ComfoRo® license certificate
� ComfoRo® labels in various sizes
� ComfoRo® memory stick with electronic data of
promotion material
� ComfoRo® posters
List of suppliers of Rieter yarns
Licensees are listed on the Rieter website with logo,
address and hyperlink. All weaving and knitting mills
wishing to process ComfoRo® yarns therefore know
where they can obtain these yarns.
By marketing rotor-spun yarns produced on the
R 40 under the ComfoRo® brand, customers underscore
their own high quality standards. By using
the ComfoRo® license they demonstrate that they
have opted for Rieter’s high quality and technology.
ComfoRo® yarns stand out for their perfect running
properties in knitting and weaving. End products
such as single jersey feature a pleasant hand as well
as low pilling tendency.
Successful licensees in Turkey
Jürgen Seuberling, sales engineer in Turkey, reports
as follows: “More than 100 000 R 40 spinning positions
were installed in Turkey in the boom years. An
impressive number. Our customers are all the more
eager to position themselves vis-à-vis competitors
with the ComfoRo® license. By using the license our
customers can stand out in the marketplace in terms
of quality and technology with ComfoRo® yarns. This
starts as early as sampling yarns with their customers
and yarn traders.”
Whether cotton spinners, acrylic spinners or producers
of blends, all are relying on the ComfoRo® brand
name and using this distinction of their yarns as an
advantage for their sales activities on the market.
The ComfoRo® license and the promotion material
provided free of charge ideally complement and bundle
our customers’ sales activities.

Aktas Akinci Tekstil A.S.
www.aktasacinci.com
Biran Iplik
www.biraniplik.com
IL-Teks
www.ilteks.com.tr
Internet Tekstil San ve Tic AS
www.internettekstil.com.tr
Karacasu Tekstil
www.karacasutekstil.com.tr
MEM Tekstil
www.memtextile.com
Nipas
www.nipastextile.com
Safteks Iplik
www.safteks.com.tr
Shricheran Synthetics India Ltd.
www.lacheran.com
Alkaplar Iplik
Best Cheran Spintex India Ltd.
www.cheran.in
DOK Iplik
www.dokoboy.com.tr
Ilhanlar Iplik ve Tekstil
www.ilhanlartekstil.com.tr
Isil Tekstil
www.isiltekstil.com.tr
Maliber Industria
e Comercio Textil Ltd.
www.maliber.com.br
Nanting Zhanyang
Fibre Co. Ltd.
www.zyfiber.com
SAF Menscucat
www.safmensucat.com.tr
Zhengzhou Zhaoge
Cotton Yarn Co. Ltd.
LINK 55 . 2 /2010
OUR CUSTOMERS
Who already holds a ComfoRo® license?
A number of our ComfoRo® licensees are illustrated
on the left, showing that ComfoRo® yarn has already
made a name for itself worldwide. You will find a
constantly updated list of all licensees worldwide on
our website at:
http://www.rieter.com/en/textile/short-staple-yarn/
rieteryarns/licensees 10-105 •
Christian Gramer
Product Manager Rotor
Ingolstadt
christian.gramer@rieter.com
Dr. Stephan Weidner-Bohnenberger
Head Product Management Rotor
Ingolstadt
stephan.weidner-bohnenberger@rieter.com
15

16 LINK 55 . 2 /2010
PRODUCT NEWS
The new upgrade package
for R 20 robots
There is no room for compromises when it comes to yarn quality.
The upgrade package for the R 20 robot maintains efficiency at a
high level.
Fig. 1 A total overhaul
of the R 20 robot enhances
efficiency and
yarn quality.
In economically difficult times it is especially important
that the machines installed in the mill operate
to a high technical standard. Production efficiency is
ensured by regular servicing and the systematic replacement
of wearing parts. This also prolongs the
service life of the machines.
Robots on older rotor spinning machines can be given
a total overhaul in the Ingolstadt plant. Numerous
robots from RU 14 / RU 14A and R1 rotor
spinning machines have already been upgraded. The
upgrade package for the R 20 robot has been available
since the end of 2009.
The R 20 robot is in operation daily, year after year.
The severe stress this entails inevitably has an impact
on the robot’s mechanical functions. An upgrade
package for the R 20 robot offers more than
just servicing and fine mechanical adjustment.
The scope of the upgrade comprises numerous improvements
that have been incorporated in the R 40
series. These also include new developments. Following
the upgrade of the R 20 robot, customers
have a 6-month warranty on the entire robot.
Modular upgrade – depending on the customer’s
requirements
The upgrade package for the R 20 robot is modular
in structure. Rieter recommends installation of the
complete upgrade package to enable all new functions
to be utilized. Price-conscious customers can
order only parts of the overall package. The upgrade
package for the R 20 robot includes 9 new components.
• Rieter LGPS laser-guided -guided positioning system
The LGPS positions the robot accurately in relation
to the spinning box by means of a laser beam and
a reflector. Precise, smooth positioning of the robot
makes the centering bars superfluous and the
clutch of the travel motor is eliminated. This reduces
downtimes and increases productivity.
• EVO multivalve
This precisely actuated vacuum system increases
the operating reliability of the robot. Trailing
threads at the air duct are eliminated.
• M305 EVO piecing cylinder motor
This high-quality motor has a long service life and
features wear-free, digital speed monitoring which
ensures constant rotation speed during piecing –
a precondition for accurate piecing.
• EVO hood opening unit
The new hood opening unit improves the stability
of the sequence of motion of the mechanical components
and considerably prolongs service life. The
compressed air supply for rotor cleaning is also improved
by the pulsating delivery of compressed
air and the new components. The new “Xclean”
program actuates repeated cleaning of the rotor
groove during acceleration, thus increasing piecing
reliability and spinning quality.
• Tailing unit
A new, integrated clamping device reduces laps
around the winder arms. Maintenance effort by operating
personnel is reduced and package quality
is improved.
• IV thread accumulator
A new sensor measures thread tension and thus
defines the precise package mounting time during
piecing and enhances robot efficiency.
• Supply tube system
The robot always carries an empty tube. This eliminates
the time-consuming wait for an empty tube to
be delivered prior to the change process. Package
change is 20% faster.

Fig. 2 New components
in the upgraded R 20
robot.
1. Rieter LGPS laserguided
positioning
system
2. EVO multivalve
. M 05 EVO piecing
cylinder motor
4. EVO hood opening
unit
5. Tailing unit
6. IV thread accumulator
7. Supply tube system
8. EVO central
lubrication system
9. ROB rotor control
system
• EVO central lubrication system
An EVO central lubricating bar is now incorporated
in the robot; this is readily accessible and all lubricating
nipples on the chassis can therefore easily
be reached. Regular lubrication of the robot’s ball
bearings reduces the energy consumption of the rotor
spinning machine as a whole.
• ROB rotor control system
More precise control of the rotor speed by the rotor
control system during piecing results in greater
operating and functional reliability and reduced
wear.
Quality service and Rieter’s technical expertise
An optimal overhaul includes not only a robot upgrade.
It is also advisable to ensure production and
yarn quality with our service package for the rotor
spinning machine. A situation analysis of the rotor
spinning machine by a Rieter specialist before upgrading
the robot is advisable in order to preclude
faults caused by the machine.
7
5
4
8
2
1
3
6
9
Jörg Feigl
LINK 55 . 2 /2010
PRODUCT NEWS
Robot upgrading procedure
The upgrade can be performed in two ways:
1. Rieter supplies a robot which has undergone a total
overhaul and receives the customer’s robot in
exchange.
2. The customer sends in the robot, Rieter upgrades
it and returns the same robot to the customer.
Comprehensive overhaul
During the overhaul the robot’s mechanical components
are completely dismantled. Each single component
is examined in respect of its operation and
condition, and replaced by a new part if necessary.
All mechanical components are adjusted. All electronic
modules are checked. The robot is repainted.
The robot’s electronic and mechanical settings are
then adjusted, and it is then tested on a test rotor
spinning machine. The robot undergoes a 48-hour
endurance test after overhaul. Only when this test is
completed successfully does the robot leave Rieter’s
assembly premises after its total overhaul.
The customer can leave the coordination of transport
and assembly of the overhauled robot to Rieter.
Qualified service technicians take care of the installation
of the robots worldwide.
A worthwhile investment
A robot upgrade is a manageable investment that
pays off in terms of piecing quality and higher robot
efficiency. A similar upgrade package is available
for the R1 rotor spinning machine. Please contact
Rieter Parts for information about these upgrade
packages.
You will find more details at:
http://www.rieter.com/en/textile/short-staple-yarn/
parts-conversions/upgrades/rotor-spinning 10-109 •
Project Manager Parts
Ingolstadt
joerg.feigl@rieter.com
17

18 LINK 55 . 2 /2010
PRODUCT NEWS
A marvel of engineering –
the RSB-D 221
Rieter has already sold more than 3 000 RSB drawframes in India. This
success is based on the ingenious and continuously improved autoleveling
functions of Rieter drawframes.
Fig.1 Handover of the
000 th RSB in India.
Left to right: Peter Illi
(Area Sales Manager
India, Rieter),
Ellappan Rajavel
(Mill Manager, KKP
Textiles Ltd.), Jürgen
Müller (Head of
Product Management
Drawframe, Rieter),
C. Suresh (Sales,
Rieter India).
Rieter Spun Yarn Systems officially handed over the
000 th RSB drawframe in India to KKP Textiles Ltd.
in December 2009. The jubilee drawframe installed
at KKP Textiles is a RSB-D 221 double-head autoleveler
drawframe with a maximum delivery speed
of 2 x 1 100 m/min. The completely independent
operation of the machine’s sides and autoleveling
systems are a truly unique feature in a double-head
drawframe. Each side of the machine delivers exactly
the same quality and output as the RSB-D 40
single-head autoleveler drawframe.
High flexibility of the RSB-D 221
The double-head design enables KKP Textiles Ltd. to
use its RSB-D 221 for two different processes: one
production head operates with carded cotton, while
the other head processes combed cotton. The two
drawframe heads can produce completely independ-
ently with different speeds, drafts and roller gaps.
Extraction can also be set separately for each head.
KKP Textiles Ltd. – a satisfied customer
The customer reports that the RSB-D 221 achieves
0% higher output per head compared with other
autoleveler drawframes available on the local market.
The new owners are extremely satisfied with the
high quality consistency and user friendliness of the
machine. They are also particularly appreciative of
the saving in space, the low energy consumption and
the compatibility of the components with other RSB
and SB drawframes from Rieter.
3 000 RSB/SB drawframes in India
During a Rieter Symposium in Coimbatore, Jürgen
Müller, Product Manager Drawframe, presented a
gold plaque engraved “ 000 th RSB in India” to Mr
Ellappan Rajavel, Mill Manager of KKP Textiles Ltd.,
for the new RSB-D 221 drawframe (Fig.1). The
RSB-D 221 is highly regarded at KKP Textiles and has
been described by Mr Rajavel as a “marvel of engineering”.
This machine is manufactured for the Indian
market in Rieter’s plant near Pune, where Rieter is
also producing the new G 2 ring spinning machine.
KKP Group continues to invest in Rieter drawframes
The KKP Group, one of India’s prominent yarn manufacturers,
produces top quality combed and carded
yarns in counts ranging from Ne 10 to Ne 40 on
more than 78 000 spindles and 1 080 rotors. KKP
Textiles is very satisfied with the continuous innovations
that Rieter offers and will continue to invest in
drawframes from Rieter in future. 10-106•
Jürgen Müller
Head Product Management Drawframe
Ingolstadt
juergen.mueller@rieter.com

Optimal use of resources with
compact ringspinning
The compact spinning process has become firmly established in the marketplace
in recent years. The quality improvements achieved through
using the compacting process open up many opportunities for utilization
by spinning mills and downstream processors. This article reports
on experience gained in an Indian spinning mill.
Raw material
utilization can be
improved with the
Com4® compacting
unit.
The compacting process has resulted in a surge in
quality in conventional ring-spun yarn. Compact
yarn displays considerably improved yarn parameters,
especially in terms of hairiness and dynamometric
stretch recovery. Its technological superiority
is undisputed, as are the potential cost savings in
downstream processes and in the fabric itself.
The potential for optimization offered by the compact
spinning process has been studied in cooperation
with an Indian customer. Quality, output or raw material
are the focus of the spinning objectives here,
and serve to compare the two spinning systems.
LINK 55 . 2 /2010
TECHNOLOGY
The development of compact spinning
Rieter introduced the compact spinning process to
the global ring spinning market 10 years ago. The
primary goal of this development was lower hairiness
and higher yarn tenacity and elongation. Two
compacting systems dominate the world market –
Rieter’s Com4® system and Suessen’s Elite® system.
Compact spinning was originally used mainly for finer
yarn counts and weaving yarns. In the meantime,
its scope of application has also been extended to
coarser yarn counts and knitting yarns.
Spinning with different objectives
Many modern ring spinning mills operate conventional
ring spinning and compact spinning machines
side by side, thus offering mill operators the greatest
possible flexibility in meeting customers’ differing
requirements. The Indian mill selected for this
comparative study produces Ne 40 knitting yarns for
hosiery – on both spinning systems.
Quality and output as the spinning objective
Although yarns from conventional ring spinning
and compact spinning machines cannot be mixed in
downstream processing, Indian spinning mills often
make no distinction between the yarns, i.e. do not label
compact yarns specifically as such. They sell both
yarns on the market as “ring-spun yarn”, without any
differentiation.
In the first part of the study the two spinning processes
were compared with the focus on an optimum
yarn outcome (Table 1). Both types of machine operate
at the same spindle speeds. On the compact
spinning machine the twist factor was considerably
reduced. This resulted in an increase in output
of 7 422 kg per machine and year compared to the
conventional ring spinning machine, equivalent to a
20. % increase in production. The smaller spinning
triangle in the compact spinning process results in
improved running behavior and a reduction in ends
down from 60 to 40 per 1 000 spindle hours.
19

20 LINK 55 . 2 /2010
TECHNOLOGY
Tab. 1 Comparison of conventional and compacted ring yarn spun with objective
on quality and production (deviations from conventional spinning in bold type).
Spinning Objective: Quality and Production
Yarn parameters Conventional
Ringspinning 1)
Yarn count Ne 40 Ne 40
Compact
Ringspinning 2)
Cotton Shankar 6 Shankar 6
Commercial staple 1 1/8 1 1/8
Application knitting knitting
Comber noil 15% 15%
Twist multiplier [αe ] .6 .0
Spindle speed, maximum [rpm] 19 00 19 00
Spindle speed, average [rpm] 18 500 18 500
Production [g/Spindel/8h] 146 175.7
Tenacity [cN/tex] 15.67 18. 2
Σ IPI 96 92
Uster hairiness 4.92 .49
Ends down/1 000 spi.h 60 40
Yarn realisation ) 74% 74%
Production/machine/year 4) 18 960 kg 221 82 kg
1) Rieter G 1, 2) Rieter K 441 (Com4®), ) kg yarn in % out 1 kg cotton,
4) 1 200 spindles, 8 400 h/year
Tab. 2 Comparison of conventional and compacted ring yarn spun with objective
on optimised resources (deviations to Table 1 in bold type).
Spinning Objective: Optimised Resources
Yarn parameters Conventional
Ringspinnen 1)
Yarn count Ne 40 Ne 40
Compact-
Ringspinnen 2)
Cotton Shankar 6 Shankar 6
Commercial staple 1 1/8 1 1/8
Application knitting knitting
Comber noil 15% 12%
Twist multiplier [αe] .6 .0
Spindle speed, maximum [rpm] 19 00 19 00
Spindle speed, average [rpm] 18 500 18 500
Production [g/Spindel/8h] 146 175.7
Tenacity [cN/tex] 15.67 18.00
Σ IPI 96 119
Uster hairiness 4.92 .62
Ends down/1000 spi.h 60 45
Yarn realisation ) 74% 77%
Production/machine/year 4) 18 960 kg 221 82 kg
1) Rieter G 1, 2) Rieter K 441 (Com4®), ) kg yarn in % of 1 kg raw cotton
4) 1 200 spindles, 8 400 h/year
There are distinct differences in the yarns’ quality
values: the tenacity of the compact yarn increases
from 15.6 cN/tex 1) to 18. 2 cN/tex 2) , yarn imperfections
are marginally lower, but Uster hairiness is
considerably reduced from 4.92 to .49.
Optimized raw material utilization as the spinning
objective
Manufacturers of knitting yarns use raw material
with a higher short fiber content on the compact
spinning machines for certain applications.
In Table 2 conventional ring spinning is used as a
reference with the same parameters and yarn properties
as in Table 1. In addition to the twist factor,
compact yarn also differs in the level of noil extraction
in this final spinning process.
Based on the fundamentally higher level of yarn tenacity,
comber noil was reduced by %, from 15%
to 12%, in compact spinning. At the same time tenacity
declines only insignificantly, from 18. 2 to
18.00 cN/tex, but is still clearly superior to conventional
ring-spun yarn with a figure of 15.67 cN/tex.
Despite the higher twist factor αe, the same reduction
in noil extraction in conventional ring spinning
still results in a low yarn tenacity of 14.7 cN/tex.
This figure is no longer acceptable for spinning mills,
since it is below the required limit for its yarn application.
The same applies to yarn imperfections. With the reduction
in noil extraction they increase from 96 to
119 IPI in compact yarn and from 119 to 128 IPI in
conventional ring-spun yarn. The first figure is still
acceptable for the end-user of the yarn, but an IPI of
128 is not. A parallel trend is also apparent in Uster
hairiness.
Yarn realization, i.e. yarn output in percent per kg of
virgin cotton used, one of the customary reference
factors used in Indian spinning mills, increases from
74% to 77% due to the reduction in noil extraction
in compact spinning.

Tab. 3 Cost comparison between conventional and compacted ring yarn spun with objective
on optimised resources (deviations to ring spinning in bold type).
Resources / Cost
Conventional
Ring spinning
Compact
Ring spinning
Cost INR € INR €
Cotton Shankar 6 [price/kg] 70. 0 1.04 70. 0 1.04
Raw mat. cost/kg cotton 5) 74.0 1.09 74.0 1.09
Yarn realisation 74% 77%
Clean cotton cost/kg yarn 6) 100.00 1.48 96.1 1.42
Power cost/kg 2.15 0.0 2 1.69 0.025
Conversion cost/kg 40.00 0.59 8.8 0.57
Total production cost/kg 140.00 2.07 1 4.90 2.00
5) incl. handling, storage etc. 6) total raw material cost incl. waste etc.
The production and yarn data used in this article have been
placed at our disposal by courtesy of Sri Balambika Textile Mills
Pvt. Ltd. in Turipur, India.
M. Vijayakumar, General Manager of Sri Balambika Textile Mills
Pvt. Ltd., Turipur, is fully convinced of the advantages of Rieter
compact spinning machines.
LINK 55 . 2 /2010
TECHNOLOGY
Raw material and costs
Raw material and energy costs are the two predominant
parameters in a spinning mill’s cost calculations.
Savings on raw material – a % reduction in comber
noil in this case – directly affect raw material costs
for the yarn in question. Lower yarn twist and the resulting
increase in output at the same spindle speeds
reduce energy costs for the compact yarn by 21%.
Since energy accounts for 14% of the manufacturing
costs, a total cost reduction of % was achieved
(Table ).
Cumulation of the savings calculated above results
in a .6% reduction in total production costs. On the
basis of today’s yarn prices, these savings in resources
increase the spinning mill’s net return on sales by
almost 50%.
Conclusion
The study shows how the qualitative benefits of compact
yarn can be exploited profitably by both spinning
and weaving mills. Even with savings in the
manufacturing process (reduced twist factor) and
raw material (lower noil extraction) compact yarn
still has sufficient reserves in terms of yarn quality.
It still displays significantly better yarn and processing
properties than a conventional ring-spun yarn.
Spinning mills benefit from reduced costs and downstream
processors from better processing properties.
Spinning compact yarns offers lower manufacturing
costs with higher quality. 10-107 •
Bert Rusch
Head Product Management
Combing and Ring Spinning
Winterthur
albert.rusch@rieter.com
21

22 LINK 55 . 2 /2010
TECHNOLOGY
RIKIPEDIA – Rieter’s technology
know-how – free of charge and
online
Wikipedia – the Internet encyclopedia – has changed ed the world. With the
new RIKIPEDIA, Rieter is presenting textile know-how from “The Rieter
Manual of Spinning” series of volumes on the e Internet.
Fig. 1 Look up textile
know-how online with
RIKIPEDIA.
Fig. 2 Initial screen of
RIKIPEDIA
Key:
1. General explanation of
RIKIPEDIA.
2. News – what has been
updated.
. Random article
– content is selected
at random.
Looking up technical terms has changed completely
since the world-famous Wikipedia encyclopedia
went live on the Internet in 2001. You can find the
information you’re looking for much faster in Wikipedia
– in the form of text, images or as a video – than
in a book.
RIKIPEDIA – that’s the name of the new online reference
work for short staple spinning technology by
Rieter. With RIKIPEDIA, Rieter presents textile knowhow
from “The Rieter Manual of Spinning” series of
volumes on the Internet in the form you are familiar
with from Wikipedia.
1
Initial content from “The Rieter Manual of Spinning”
series of volumes has now been edited for the Internet
and gone live in English on www.rieter.com.
More content is being added daily.
Structure
The structure of the RIKIPEDIA online reference work
is similar to that of the existing volumes and is subdivided
into the following areas:
� Technology of Short-Staple Spinning
� Fiber Preparation
� Spinning Preparation
� Ring Spinning
� Rotor Spinning
� Alternative Spinning Systems
The table of contents for the relevant thematic field
is always displayed to the right of the content, facilitating
rapid navigation through the contents (Fig. ,
item 7).
3
2

Fig. 3 RIKIPEDIA
contents page.
1
3
4
2
Functions
The basic functions that are familiar from Wikipedia
can also be found on RIKIPEDIA (Fig. ).
1. Search – A search function for content only within
RIKIPEDIA can be found in the navigation menu
on the left-hand side. The results are sorted by relevance
and listed in detail.
2. Topic selection – The relevant main chapters can
be selected here.
3. Print – A print function has been added for users
who want to print out content. If this function
is used, a separate window is opened, in which the
content has been optimized for printing.
4. Permalink – This link can be used if reference is
made to RIKIPEDIA.
5. View images – The embedded images can be magnified
with a click. A further click on the open image
closes it again.
6. Comment – New findings or suggested corrections
regarding the individual topics can be sent to Rieter
by using the Comment function under each article.
6
5
Michel Gelin
7
LINK 55 . 2 /2010
TECHNOLOGY
7. Table of contents – Rapid surfing through the content
via the table of contents.
Recommended browser
Website development has continued at a very rapid
pace in recent years. Rieter has decided to take advantage
of these new technologies with RIKIPEDIA. In
order to surf through the contents as comfortably as
possible, it is advisable to use one of the new browser
types, e.g. Mozilla Firefox (www.mozilla.com).
If you are interested, just visit RIKIPEDIA now at
www.rieter.com/rikipedia and surf through the initial
content – further content is being published continuously.
10-110 •
Project Manager Marketing
Winterthur
michel.gelin@rieter.com
2

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