Orthopac RVMC-12 - Mahlo GmbH

ORTHOPAC ® RVMC-12
Modular straightening and process control system
Quality made
in Germany
ORTHOPAC ® RVMC-12

MODULAR STRAIGHTENING AND
PROCESS CONTROL SYSTEM
ORTHOPAC ® RVMC-12
2 Orthopac ® RVMC-12
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A modular system for both fully automatic correction of bow and skew and process control
Menu selection on an Orthopac RVMC-12
User-interface for an Orthopac RVMC
straightening system
Applications
Product-highlights
✓ Modular system architecture
✓ Easy to retrofit
✓ User-friendly
✓ Informative process visualisation
NONWOVEN PAPER PLASTIC
Cost-effective and quality-conscious textile finishing is primarily
an operational issue; more often enough, however, it
determines quite simply the extent of market participation.
Globalisation of the markets allows production capacity to
flourish wherever standards in terms of price and/or quality
can best be met. In addition, there is often the need for
a greater degree of flexibility in long-term planning and
product lines. To help quality conscious finishers, Mahlo ®
turned the idea of combining essential process parameters
into a modular concept. The Orthopac RVMC is just such a
modular process control system for use on stenters. Given that
there was already a latent need for monitoring various process
variables, it made sense to integrate multiple devices into an
overall concept. This results overall in higher financial returns than
by adding individual pieces of equipment. And even with a limited
investment budget, it give finishers a chance to respond to technical
progress and meet increasing demands from the market. Additional
options are available at any time for expanding the system to meet
individual requirements.
Fundamentals
An Orthopac RVMC combines the functions of an RVMC straightening
unit with those of the Optipac VMC process control system in one
package! It takes advantage of the savings potential resulting from
alternative and/or parallel use of common components. The software
packages for Orthopac FMC and Optipac VMC remain self-contained.
The basic construction of the modular concept uses essentially the
Orthopac straightening machine as a basis.

In addition to the intelligent bow and skew detection facility already
integrated into the straightening machine, further intelligent sensors
can be connected to the processing electronics in the end panel
of the straightening machine via a CAN bus link. The existing 15"
touchscreen on the straightener is used for visualising the measurement-related
data. A switching option allows the user to bring the
application of interest to the foreground and indicate any existing
alarm condition in the background application. Easy to customise,
combined displays of measured values enable machine personnel to
monitor the entire process with the greatest of ease.
In an optional expansion stage a second 10.4" TFT display and control
terminal in the end panel of the straightener can permanently display
one or the other application simultaneously and enable it to be
operated.
Specifically, on a stenter the following parameters can be measured,
visualised, controlled within the limits of the stenter‘s manipulated
variables, and documented using special software packages
(print server):
- Weft and course bow and skew / bow and skew rollers
on an Orthopac RVMC
- Liquor pickup / squeezing (nip) pressure
- Pick and course count / overfeed
- Exhaust humidity / exhaust fan speed / damper opening
- Fabric temperature / line-speed and dwell time
- Weight per unit area / overfeed
- Residual moisture / line-speed
- Stretch and shrinkage / overfeed
- Product width
Customer benefits
✓ Online monitoring and control of all relevant parameters
✓ Increased productivity
✓ Optimised manufacturing reliability
✓ Optimised process repeatability
✓ Documentation of quality
✓ Provides a comparative basis for quality standard
✓ Considerable energy savings
✓ Short payback times
CONTENTS
BASIS
ORTHOPAC ® FMC 4
Bow and skew detection – simply unique
Visualization 6
Particularly intuitive
MECHANICAL
RVMC straightener 8
The standard
MFRC/DFRC straightener 10
For fine-tune straightening
GRVMC straightener 12
The reinforcer
XRVMC straightener 14
Especially precise
Combi-systems 16
Tailor-made solutions
Options 18
For every application
PROCESS CONTROL
Sensors 20
Measuring, logging, controlling
TECHNICAL DATA
All technical data from page 23
Orthopac ® RVMC-12
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Product-highlights
✓ Optimized optics ensure
maximum possible resolution
of the angle of distortion
✓ Direct, instantaneous signal
processing determines the
angle in a trice
✓ Optimized back and
incident lighting
✓ Integrated pick or knitted-
course counter
✓ No product-specific
adjustment required
✓ High-speed scanning
✓ Product change detection
✓ Integrated recipe manage
ment facility
✓ Double-sided scanner;
enables face and reverse
side scanning
Customer benefits
✓ Broadest scanning spectrum
on the market
✓ Simple, intuitive operation
✓ Automatic scanning even
of the most complex product
structures
✓ No residual distortion
✓ Performs optimally in rel-
tion to its very modest
physical dimensions
4 Orthopac ® RVMC-12
BASIS
ORTHOPAC FMC
BOW AND SKEW DETECTION – SIMPLY UNIQUE
Applications
Skewing of the product during manufacture
alters the structure of textile webs. A distorted
product depreciates in useful value,
affects subsequent processing and invites
complaints. An Orthopac detects and eliminates
product bow and skew, and in doing so its optical
sensing system is not deterred by either the variety of
colours, printed or Jacquard patterns or surface textures such
as pile and loop usually encountered in textiles. The Orthopac detects
and analyses the regular basic structure of the product – weft, course
or rows of tufting – and if required also indicates their density.
The Orthopac FMC-12 is an all-purpose system for automatic control of
various straighteners, draw-rollers, and differentially or multi-motor
driven stenter chains, and can be installed at the feed and delivery
end of a stenter. It features a digital scanning system and microprocessor
which adapts automatically to a wide variety of fabrics, and a
screen display of the distortions.
Principle of operation
A number of scanners and lamps are spaced evenly across the product
web. The cloth runs between the sensors and lamps. The structure of
the passing weft and courses modulates the light intensity measured
by the scanners. The repetitive nature of the passing picks or courses
create a regular light-dark pattern. This in turn generates a modulated
signal in the scanner’s receiver system. A centrally-pivoted,
cylindrical lens in the scanner oscillates to a specific angle in relation
to the passing picks. When the lens is parallel with the pick or course,
signal modulation is at its maximum. It then decreases as the oscillating
lens progressively cuts across the weft line. Unwanted signals
that differ from the frequency of the picks, knitted courses or rows
of tufts are filtered out digitally, so that the system can analyse the
pure bow and skew-related signals and, from those, automatically
compute the weft or course configuration.
By using a lamp with infrared LEDs, the light shining onto each scanner
can be controlled automatically and individually. The new lamps
have a much longer working life, and consume far less energy than
conventional ones, two further attributes of the new technology.
If certain materials barely allow light to shine through them, or their
surface texture has distinguishable characteristics, better results can
be obtained by using reflected rather than back light.

The scanners therefore feature a built-in infrared light source with
automatic intensity control, which can be switched on in place of the
back- lighting lamps.
The optoelectronic method of measurement can be
optionally extended to include hybrid scanning. The
practical experience gained in the area of image
processing has been used to create the most innovative
and world‘s best system for detection of distortions.
By combining both systems, and through use of existing synergies
and potentials, the Mahlo ® scanning technology has taken yet another
step further towards perfection.
The highlight of the hybrid scanning system is fully automatic weft
or course detection along with recipe changing using SOS technology
(Self-Optimizing System). The new, innovative Hybrid Scanning ® with
revolutionary double-sided scanners is a sensing system with the widest
dynamic range and broadest scanning spectrum on the market.
The scanners on an Orthopac need to check for distorted weft directly
behind the straightening device, so that they can determine the out-
come of the straightening process as fast as possible.
The industrial PC communicates via microcontroller with the scanners
and roller adjustment mechanism. It can be networked with a host
computer and can print out a record of the progressive weft-line
trend for quality documentation. The use of Ethernet technology
also results in a considerable reduction in cabling expenditure. The
Mahlo ® –Service department can be contacted via modem.
Scanners (here with the hybrid system)
in action
TK-12 scanner:
Distortion detection with back or incident light
Sectional diagram of a system with
hybrid scanning
Orthopac ® RVMC-12
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ORTHOPAC FMC

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Product-highlights
✓ Precise, instructive and
progressive display of
any bow and skew
✓ Menu-controlled service
settings
✓ Two-part combi-image monitoring
simultaneously
2 scanner assemblies
✓ Variable percentage of preset
bias (left: skew, right: bow)
✓ Direction of product fl ow and
momentary lie of the weft
✓ Momentary distortion in
percent (left: skew,
right: bow)
✓ Freely scalable histograms
(above: skew, below: bow)
✓ Variable scaling for histogram
mapping, e.g. -
5...0...+5 (above: skew,
below: bow)
✓ Password protection - unauthorised
users are denied
access to the program
✓ Recipe management
✓ Integrated audio response
Customer benefi ts
✓ Menu guide in all
common languages
✓ Extremely user-friendly
✓ Ergonomic user prompting
✓ Easy to operate
6 Orthopac ® RVMC-12
BASIS
VISUALISATION
EVERYTHING AT A GLANCE
1
2
5
Orthopac simulation with active and inactive elements
Display of values from various process control sensors
4
3
The user interface
consists of fi ve areas:
1. Title line:
General information
(including alarm bar)
2. Display area:
Selectable screen pages
(display forms)
3. Selection block:
Navigation within the
program
4. Vertical block:
Touchpads for main
options
5. Horizontal block:
Touchpads for basic
functions and
sub-options

Sectional detection of distortions
(Uninterrupted scanning across the full width of
the product )
Some applications require detection and documentation
of any bow and skew in freely definable sectors across the
entire width of the product.
A highly sensitive and intelligent traverse controller on
the scanner assembly enables online pickup of distortionrelated
data at any point across the product web. Just 4
scanners are needed to cover the entire width. Since each
scanner only travels across a small section, the disadvantages
of traditional traversing are eliminated.
By combining several traversing sensors, any distortion
across the full width of the product can be detected and
analysed without interruption and in great detail. Distribution
over any number of sectors means that specific
sections of the web can be studied and documented in
precise detail.
Measurement of pick count
(Pick counting lengthwise)
The 12th generation TK12 scanner has two functions. As already
described, it can detect the angle of the weft exceedingly
accurately and at the same time determine pick and
course density likewise with a high degree of accuracy.
Each of the scanners on a straightening machine provides
information on pick and course density at its set position.
These values can be displayed by a bar graph. The trend
graph plotting these measured values resembles a map,
which highlights in colour the places where pick or course
count has deviated from set-point.
The measured count can be documented or sent to the host
system via the control computer‘s interface.
The data from these scanners cannot however be used to
control pick and course density. This requires the facilities
of a Famacont module.
Sector display
Pick density display
COMMUNICATION
Our machines talk to you. The touchscreen
operated „human-machineinterface”
uses the integrated audio
response facility to provide information
on product quality and adherence
to tolerances. In any language you care
to choose. So you always know what’s
happening.
Orthopac ® RVMC-12
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VISUALIZATION

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Product-highlights
✓ Ultra-precise realignment
of weft
✓ Quick reacting servo-controller
✓ Progressive rate of straightening
✓ Exceedingly compact
construction
✓ Low product content
✓ Wide variety of optional extras
Customer benefits
✓ Maintains tight distortionrelated
tolerances
✓ Helps avoid complaints
✓ Improves customer
relationships
✓ High standards of repeatability
✓ Short payback times
✓ Highly reliable / long service life
8 Orthopac ® RVMC-12
MECHANICAL
RVMC STRAIGHTENER
PERFECT INTERPLAY BETWEEN MECHANICS AND ELECTRONICS
Applications
For the needful correction of the measured distortion,
Mahlo ® can provide the user with an RVMC straightener,
a universal system suitable for virtually any application.
The RVMC straightener meets the demands of the market.
The textile finisher requires a sophisticated straightener
which offers maximum customer benefit with respect to
versatility and operating convenience.
Distortions are eliminated with the utmost precision
and instantaneously by the interplay between RVMC and
optoelectronic scanners. The system is easy to operate and
robustly constructed.
Its modular construction allows the system to be configured
to meet the demands of changing conditions and requirements.
The RVMC straightener is used:
- At the feed end of a stenter
- At the feed end of a levelling stenter
- On decatisers
- Ahead of a printing machine
- Between an open width washing machine and drum dryer
- On coating ranges ahead of the coater at the feed end of a
flame laminator
- At the feed end of wide compactors for knitgoods, etc.
RELIABILITY
Our machines do exactly what we build them for: hour after
hour, year after year. Our E&D team ensures that the central
nervous system of our equipment always works without interruption.
So that you always reach your objective.

Straightening capacity
Fundamentals
The Orthopac RVMC is the most well-proven and best-selling straight-
ening system in the world. Its particular strength lies in its ability to
straighten exceedingly accurately and its progressive rate of straightening.
The exceedingly compact machine is furnished as standard
with 3 skew and 2 bow rollers. The unique, stepless, hydraulically
controlled actuators for adjustment of the bow and skew rollers en-
sure the quickest possible and most precise response along with an
absolute minimum of maintenance.
For less demanding applications, frequency-controlled electric motors
may also be used to position the rollers. The processing electronics
are integrated into the end panel of the straightener, thus ensuring
first-rate access to both the electronics and drive mechanisms in the
panels. The touchscreen for visualisation of the lie of the weft (10.4”
or 15” TFT) and all relevant process parameters is installed either on
or in the straightener‘s end panel or separately with or without
enclosure.
The scanners (TK12 or hybrid) of the automatic control system are in-
tegrated into the outlet end of the straightening machine in a scanner
assembly. They can be positioned across the width of the product
either manually or fully automatically.
Modern networking technology shortens the time it takes to install
and facilitates the addition of extras. The compact, solid construction
of the mechanical straightener is capable of handling the highest
loads. Processing speeds range from 3 m/min to 250 m/min. A variety
of options ensure that the system can be adapted optimally to suit
the respective application and types of product likely to be encountered.
%
100
75
50
25
Straightening capicity of skew and bow rollers
Skew rollers
Bow rollers
Actual product width
Rated width of m/c
0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0
Orthopac straightener in textile production
Classic feed-end straightener
Orthopac ® RVMC-12
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RVMC STRAIGHTENER

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NONWOVEN PAPER PLASTIC
Product-highlights
✓ Dual-purpose straightening
roller
✓ Very fine adjustment of the
realigning roller
✓ Compact dimensions
✓ Low product content
✓ Fine-tuning of residual
distortions
Customer benefits
✓ Maintains tight distortion-
related tolerances
✓ Helps avoid complaints
✓ Improves customer
relationships
✓ High standard of repeatability
✓ Short payback times
10 Orthopac ® RVMC-12
MECHANICAL
MFRC/DFRC
STRAIGHTENER
COMPACT AND PRECISE
The main feature of the MFRC straightener is its capacity to
straighten relatively minor degrees of distortion to a high
degree of accuracy.
Applications
Stenter delivery end:
With the MFRC straightener the residual distortion often encountered
at the delivery end of the stenter can be realigned after the
drying processes (bow and skew distortion). This ensures adherence
to even the tightest tolerances in respect of residual distortion.
Sanforizers:
Residual distortions need to be corrected prior to a sanforizing pro-
cess. If a sanforizer lacks the services of an Orthopac MFRC, the product
may have to be run through the stenter a second time. An
Orthopac MFRC ahead of a sanforizer can prevent the additional cost
of re-stentering and guarantee a distortion-free product following
the sanforizing process.
Printing machines:
A distortion-free product is an absolute must prior to being printed.
A straightener directly ahead of a printing machine is the last opportunity
to correct any distortion. With the Orthopac MFRC the risk
of any deterioration in quality as a result of printing on a distorted
product is reduced considerably. A lateral shifting device with photoelectrical
edge sensing aligns the product to the print edge.
Flame laminators:
On flame laminators, the product must be fed onto the laminating
roller absolutely distortion-free. Bow and skew cannot be removed
KNOWLEDGE
We have a common goal: maximum performance from your
appliance. To that end we are at your side, right from the
installation of the appliance and advice on how to maintain
it through to the training of your employees. Our instructors
get your people in shape in matters of operation and maintenance.
So that you can solve your problems even faster.

once the product has been flame laminated. An Orthopac MFRC
directly ahead of the laminating roller can reduce the risk of secondquality
products by approx. 80%.
Fundamentals
To realign bowed and skewed weft a special “dual-purpose straightening
roller“ is used. This is a cambered roller mounted in a pivoted
frame, which enables it to function as both a bow and skew straightener.
This arrangement allows a very fine degree of adjustment of
the straightening roller and a significant reduction in the physical
dimensions of the assembly. The scanners, electronics, display and
control terminal, etc. correspond to the standard configuration of an
Orthopac RVMC. Processing speeds range from 3 m/min to 250 m/min.
Further development of the proven Orthopac MFRC straightener into
the Orthopac DFRC now enables it to correct even greater degrees of
distortion. The newly designed dual-purpose straightening roller – 2
bow and skew rollers in a single frame - has doubled its capacity to
straighten. Distortions are corrected in even smaller increments.
The benefit: the product passes through the Orthopac MFRC over just a
single straightening roller. This results in a lower product content and
thus a faster more precise response to any distortion. These features
make it an ideal tool for the fine-tune realignment of residual
distortion, and gives it an advantage in this respect over a full-size
straightening machine.
Orthopac straightener with shifting
device ahead of a rotary printing machine
An Orthopac MFRC at the stenter delivery end
Orthopac MFRC ahead of a sanforizer
Orthopac 11
® RVMC-12
MFRC/DFRC STRAIGHTENER

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Product-highlights
✓ Heavy-duty construction
✓ Suitable for tensional forces
of up to 500 kg
✓ Working widths of up
to 5500 mm
✓ Compact construction
✓ Low product content
Customer benefits
✓ Maintains tight distortionrelated
tolerances
✓ Helps avoid complaints
✓ Improves customer relationships
✓ High standard of reproducibility
✓ Short payback times
✓ Documentation of residual
distortion
Use on industrial fabric
12 Orthopac ® RVMC-12
MECHANICAL
GRVMC STRAIGHTENER
THE JUMBO OF STRAIGHTENERS
The Orthopac GRVMC is especially designed to withstand high
mechanical loads. Thanks to reinforced components, it is ideal
for processing really wide, heavyweight materials such as
carpeting and denim.
Applications
Distortions impair a product’s visual features and/or practical
value, both of which are of particular significance in the case
of decorative or industrial materials. Orthopac GRVMC straighteners
are used wherever products are likely to subject machinery to
exceedingly high tensional stress.
Denim:
Heavyweight denim qualities (> 350 g/m 2 ), on account of their dimen-
sional stability, and the need to apply skew bias (to counteract a
denim’s tendency to twist). In this case, a back-tension of up to 400
kg is often required.
Industrial fabric:
Extra-wide industrial fabric (= 3400 mm product width).
Raschel curtaining:
Wide Raschel curtaining (= 3400 mm product width)
Typical installation on a denim
application

Glass-/carbon fibre wovens:
Woven constructions of glass or carbon fibre. To prevent damage
to the individual filaments, rollers with a diameter of 150 mm are
required.
Carpeting:
Owing to the pattern join at the beginning and end of each roll, wallto-wall
carpeting requires a high degree of straightness. If the tight
tolerance requirements are not met, the result is either costly claims
or debarred access to a more lucrative market segment.
Owing to the often special nature of the applications, we would
advise you to consult our sales and applications engineers.
Fundamentals
The Orthopac GRVMC is specifically constructed to withstand high mechanical
loads. In particular, the specially reinforced hydraulic units
for positioning the rollers ensure perfect straightening even under
maximum tension-induced loading. The straightener also features a
solid, reinforced frame, reinforced roller bearings and larger diameter
bow and skew rollers; : A jumbo among straighteners. The scanners,
electronics, display and control terminal, etc. correspond to the
standard configuration of an Orthopac RVMC.
On the GR version too, all the scanners are still laterally adjustable.
Processing speeds range from approx. 3 m/min (carpeting) to 150
m/min (industrial fabric). The unit is available for use in conjunction
with a PCS Pattern Control System either as a manually controlled
straightener, or with provision for the addition of a retrofit scanning
system. As with the standard Orthopac RVMC, it can be supplied in all
forms of combi-systems. The Orthopac GRVMC is available in working
widths of 1600 to 5500 mm.
PROMPT INSTALLATION
Our service team ensures
that the installation of our
appliances runs smoothly
and on time. So that your
investment is turned quickly
into profit.
Orthopac GRVMC-12 on a denim line
Straightening fitted carpeting
Orthopac 13
® RVMC-12
GRVMC STRAIGHTENER

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14 Orthopac ® RVMC-12
MECHANICAL
XRVMC STRAIGHTENER
THE NEXT GENERATION
Control and actuation at the same time – the Orthopac XRVMC is
the first straightening system to offer this unique combination. This
completely new concept was developed for processing high-value
textiles with widely fluctuating distortions. The independently controllable
straightening rollers guarantee maximum possible control
of the straightening process.
Applications
Confronted by the most stringent demands with respect to
permissible levels of residual distortion, as experienced by
amongst others suppliers to the automotive industry or other
manufacturers of high-value textiles, a completely new kind
of straightening concept has been developed.
The new Orthopac XRVMC straightening concept placed special em-
phasis on the realigning mechanics and its interaction with the an-
alytical electronics of the scanning system. Product content has been
further reduced and the intelligent combination of control and actuation
accelerated correction of the measured distortion to a previously
unheard of degree.
Manufacturers of high-value textiles for both traditional sectors (clo-
thing, domestic and automotive textiles) and new technical applications
are most enthusiastic about the performance of and straightening
results attainable by the Orthopac XRVMC straightening concept.
Orthopac XRVMC on the feed side of the stenter

Fundamentals
The Orthopac XRVMC straightener in its basic configuration features
three individually driven „dual-function straightening rollers”. These
are cambered rollers mounted in a pivoted frame, which enables
them to function as both a bow and skew straightener. Additional
dual-function straightening rollers for special applications are available
as an option. Correction of bow and skew can be accomplished
in small increments. This arrangement allows a very fine adjustment
of the straightening rollers. Since parallel rollers are no longer need-
ed, the assembly‘s physical dimensions have been reduced considerably.
Owing to its compact size, the required amount of cloth
passing through the assembly has been reduced by more than thirty
percent. Along with the stepless, hydraulic actuators which adjust
the position of the dual-function straightening rollers, this has resulted
in an ultra- precise and fast response to measured distortions.
The separation and individual positioning of the respective straightening
rollers has brought about an entirely new kind of actuation
concept. A scanner assembly (TK12 or hybrid) located at the inlet of
the straightening machine detects variations in distortion even before
they reach the correcting rollers. Via the processing electronics, the
two initial dual-function straightening rollers run to a computed po-
sition immediately after the change in distortion occurs. The incom-
ing distortion is thus realigned from the very first centimetre of
product.
A scanner assembly (TK12 or hybrid) located at the outlet of the
straightener detects any possible residual distortion in the product,
and this is corrected with absolute reliability by the last dual straightening
roller.
This newly developed actuation concept – a combination of control
and actuation – enables an even more precise and faster response
to distortions. The overriding advantage of the Orthopac XRVMC is
demonstrated in particular when it is confronted by products with
high distortion dynamics.
INNOVATIONS
We love being technological
leaders. And our R&D team
works every day to make sure
it remains so. Innovations,
inventive talent and future–oriented
thinking – to
guarantee your success.
Product-highlights
✓ Smart feed-forward control
concept
✓ Minimum possible product
content
✓ Combination of control and
actuation
✓ Quick-reacting servo-controller
✓ Dual-function straightening
roller
Customer benefits
✓ Maintains the tightest
distortion-related tolerances
✓ Helps avoid complaints
✓ Improves customer
relationships
✓ High standards of
repeatability
✓ Short payback times
✓ Highly reliable / long service
life
Orthopac 15
® RVMC-12
XRVMC STRAIGHTENER

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Product-highlights
✓ Combines all the benefits of
all other straightening devices
✓ Data management for con-
tinuous documentation
Customer benefits
✓ Maintains the tightest
distortion-related tolerances
✓ Helps avoid complaints
✓ Improves customer
relationships
✓ High standard of repeatability
✓ Short payback times
✓ Documentation of residual
distortion
LISTENING
Our sales team knows how to
listen: with our customers‘
individual requirements, wishes
and ideas firmly in mind, they
point our R&D engineers in the
right direction. So you get exactly
what you really need.
16 Orthopac ® RVMC-12
MECHANICAL
COMBI-SYSTEMS
MEETS CRUCIAL REQUIREMENTS
Applications
Confronted by the most stringent demands with respect to any re-
sidual distortion, there is often a need to work out extra-special
straightening concepts. Mahlo ® responded to this demand by working
out individualised solutions.
This became a necessity since it is often the case that straightening
ahead of a stenter simply does not suffice. Distortions, especially
bow, can still occur in the stenter itself. This is why the weft configuration
is often sensed by scanners just after the fabric has left the
stenter‘s draw-off roller. Bowed weft is realigned by controlling the
speed of this roller and/or by the combined skew/bow roller of an
Orthopac MFRC straightener.
Fundamentals
Since the emphasis is on fine-tune correction of minor degrees of
residual distortion at the delivery end of a stenter, the Orthopac MFRC
with its dual-purpose straightening roller – a bow roller built into a
pivoted frame – is particularly ideal for this task. This arrangement
allows a very fine and precise adjustment of the straightening roller
and a significant reduction in the physical dimensions of the assembly.
Since the product has only to run around a single straightening
roller, the system responds very precisely to the smallest degree of
distortion, and in that respect it has an advantage over a conventional
straightening machine.
The shift from already long-proven standard solutions to tailor-made
concepts has already taken place, and Mahlo ® has been actively going
down that road from the very beginning.
Individual consultation with our highly trained sales personnel combined
with the long years of experience of our process-technology
department form the basis for recognizing problems and working out
suitable solutions.

Combi-system for wovens: Orthopac RVMC-12 straightening and process control system at the stenter feed end combined with an Orthopac FMC-12 scanner
assembly at the delivery end.
Combi-system for knits: Orthopac RVMC-12 straightening and process control system with cloth-tension controller and spreader roller combined with an
Orthopac MFRC-12 straightener at the delivery end.
Quality made
in Germany
For decades we have been designing and producing our appliances exclusively
in Germany – using the highly motivated specialists we have
trained ourselves. This is your guarantee of the highest level of quality.
Orthopac 17
® RVMC-12
COMBI-SYSTEMS

TEXTILE
NONWOVEN PAPER PLASTIC
18 Orthopac ® RVMC-12
1
2
MECHANICAL
OPTIONS
FOR EVERY APPLICATION
So that we can offer the user tailor-made solutions, the Mahlo ® range
of products provides a variety of options.
3
1. Scroll-roller assembly at the inlet
for creaseless spreading of the online web
2. Scanner cooling
for use at high ambient temperatures
3. Corrosion-proof package
ensures a long service life, even in aggressive environments

The following is a list of the most essential
available options:
- Spreader roller(s) at the inlet, surface contact
adjustable either manually or by electric motor
- Spreader roller above the scanners, cloth-tension
controller to minimise and maintain a constant-
degree of back-tension by means of a pneu-
matically preloaded twin-roller compensator and
differential
- Ceremat MMZ segmental control roller
- Print server software for documentation of
measured distortion
- Other data management systems
- Host computer interfaces
- Various mounting stands
- Additional skew and bow rollers
- Display and control terminal
- Remote diagnostics system
- Safety package (obligatory in the EC)
- Braked inlet roller (Orthopac GRVMC only)
- Additional alarm outputs
- Kinemat MMA traction assembly
- Lateral positioning device
- Special mounting for joining two straighteners of
different widths
- Corrosion-proof package
- Cooler for the electronics
- Scanner cooling facility
- Teflon-coated rollers
FIRST AID
You can count on our service team,
especially when „first-aid“ is required.
A call is all it takes to get our
technicians on-site. Around the clock
– and around the globe. So that you
can concentrate on your work without
worry.
Online-Support:
SERVICE@MAHLO.COM
Support-Hotline:
+49-(0)180-50 62 456
Orthopac 19
® RVMC-12
OPTIONS

TEXTILE
Permaset VMT
dwell time
NONWOVEN PAPER PLASTIC
20 Orthopac ® RVMC-12
PROCESS CONTROL
SENSORS
MEASURING; LOGGING; CONTROLLING
Famacont PMC
pick density (count)
Gravimat FMI
g/m 2 weight
Ecomat AML
exhaust air humidity

Sensor overview
Detailed information can be found in our product brochure „Optipac VMC-12”
Sensors Measured variable Controlled variable
Permaset VMT Dwell time Product line-speed
Famacont PMC Pick density Overfeed
Gravimat FMI g/m 2 weight Overfeed, doctor blade, speed
Textometer RMS Residual moisture Product line-speed
Ecomat AML Exhaust air humidty Extract fan speed, damper opening
Aqualot HMF Liqour pick-up Compression nip pressure
Infralot IMF Residual moisture Speed, extract fan speed, damper
opening
Wilot WMR Product width -
Thermoscan OMF Temperature profile Product line-speed
Elotex DMG Stretch / shrinkage Overfeed
Textodrive TMS Moisture profile Product line-speed
DEVELOPMENT
To ensure the high performance capability of and maximum
customer benefit from our products, we rely on the very latest
technologies and maximum commitment to develop the products
of tomorrow. So that the future can start for you today.
Orthopac 21
® RVMC-12
SENSORS

SERVICE AND SUPPORT
Mahlo ® has for decades been setting standards in the field of measuring and control systems for the textile
industry: Using innovative and trend-setting technology.
In addition to technology, direct contact with our customers is especially important to us. This includes intensive
assistance and customer care wherever the customer is located, a global service and agency network and our
24-hour replacement part service.
We wish to convey to you the good feeling and security of being able to count on the know-how of our experts
in any situation, regardless of whether it concerns installation and start-up, conversion of existing systems or the
servicing of your appliances.
22 Orthopac ® RVMC-12

TECHNICAL DATA | ORTHOPAC FMC
Orthopac FMC
Scanning TK-12-scanner
Hybrid-scanning unit
Signal generation Photoelectrical measurement with oscillating lens (2 – 16 scanners) and
image projection ( 2-8 scanners)
Double-sided scanning, angular resolution: 0.1°
Detects weft threads and patterns up to 180 picks/cm
Signal analysis Analysed by DSP, microcontroller and IPC in real time
visualization via touchscreen plus audio response
Lighting options Infrared LED lighting: back, reflex and flash lighting of automatically
variable intensity
Optics Fixed focus (no adjustment required)
Auto-control Software-control, PID characteristics, line-speed-related, separate bow and
skew component
Operation Touchscreen
Display Colour monitor with optional displays; main display: bow and skew
graphics, trend histogram, extra numerical indication of bow and skew;
diverse service displays
Line-speeds 0 – 250 m/min
Design standard Housing and plug: IP64 (dust and splash-proof)
Options Corrosion-proofing and cooling
Dimensions (w x h x d) 13 cm x 15,5 cm x 13 cm per unit
Orthopac 23
® RVMC-12
ORTHOPAC FMC

TECHNICAL DATA | ORTHOPAC RVMC
Straightener Orthopac RVMC
Mechanics 3-skew rollers, 2-bow rollers (3rd optional)
Drive mechanism Hydraulic: controlled by a servo system;
Electrical: controlled by frequency-regulated servo motors
Straightening capacity
(at w = 1800mm)
24 Orthopac ® RVMC-12
Max. skew ±750 mm; max. bow ± 220 mm (2-bowrollers),
(with 3rd bow roller: +50%)
Rate of roller adjustment bow/skew adjustable, minimum of 4-5 seconds at maximum displacement
Max. fabric width 3400 mm
Max. fabric line-speed 250 m/min (no tension control), 150 m/min (with tension control)
Fabric capacity (basic machine
with scanner assembly)
2-skew / 2- bow rollers: ~ 3250 mm
2-skew / 3-bow rollers: ~ 3600 mm
Scanner assembly 4-12 scanners, scanners positioned optimally by auto-controlled motor
and edge sensors or manually positioned via high-grade linear guides
with lock-in points
Dimensions See diagrams
Weight
(at w = 1800mm)
~ 950 kg
Power supplies 3 ~ 380V/50Hz, 3 ~ 400V/50Hz, no neutral; transformer available for
other voltages
Power consumption Max. 6,4 kVA (by fully furnished combi-installations)
Ambient temperature Max. 45°C (no air conditioner)
Display and control terminal 15“ TFT touchscreen in separate enclosure (ca. 520 x 400 x 252 mm (w x h x d);
10,4“ TFT touchscreen installed on end panel;
available as stand alone or semi-stand alone

Dimensions
Anzeige und Bedienstation 10,4˝
Display and control terminal 10,4˝
Anzeige und Bedienstation 15˝ (Optional)
Display and control terminal 15˝ (optional)
AROUND THE CLOCK
We know every nut and bolt on our machines. Your replacement
part will be on its way to you within 24 hours. We set
everything in motion. Just so that you don’t stand still.
Online-Support:
SERVICE@MAHLO.COM
Support-Hotline:
+49-(0)180-50 62 456
= Antrieb / actuators
Klimagerät / air conditioner
(Optional/optional)
Druckluftanschluß / compressed air connection
p min = 4 bar, V = 10l/min, Schlauch (hose) = Da 8mm
b = Nennbreite (nominal width)
b max. 3400mm
RVMC straightener
91-013972
Orthopac 25
® RVMC-12
RVMC STRAIGHTENER

TECHNICAL DATA | ORTHOPAC MFRC-DFRC
Straightener Orthopac MFRC-DFRC
Mechanics Combined swingable, slewable bow and skew roller to straighten bowed and
skewed material.
Drive mechanism Hydraulic: controlled by a servo system;
Electrical: controlled by frequency-changer regulated servomotors
Rate of roller
adjustment
Max.fabric width 3400 mm
26 Orthopac ® RVMC-12
Bow/skew adjustable, minimum of 4-5 seconds at maximum displacement
Max. fabric line-speed 250 m/min (no tension control), 150 m/min (with tension control)
Scanner assembly 4-12 scanners, scanners positioned optimally by auto-controlled motor and edge
sensors or manually positioned via high-grade linear guides with lock-in points
Dimensions See diagram
Weight
(at w = 1800 mm)
Fabric capacity
(basic machine with
scanner assembly)
Straightening capacity
(at w = 1800mm)
MFRC DFRC
~ 700 kg ~ 780 kg
~ 1250 mm ~ 1950 mm
Max. skew ± 250 mm;
Max. bow ± 110 mm
Max. skew ± 500 mm;
Max. bow ± 220 mm
Power supplies 3~ 380V/50Hz, 3~ 400V/50Hz, no neutral; transformer available for other voltages
Power consumption Max. 6,4 kVA (by fully furnished combi-installations)
Ambient temperature Max. 45°C (no air conditioner)
Display and control
terminal
15“ TFT touchscreen in separate enclosure (ca. 520 x 400 x 252 mm / w x h x d);
10,4“ TFT touchscreen installed on end panel;
available as stand alone or semi-stand alone

Dimensions
b
= Antrieb (actuator)
= Nennbreite (nominal width)
MFRC straightener
91-013046-01
Product motion way from top
to bottom
DFRC straightener
91-013497-01
Orthopac 27
® RVMC-12
MFRC-DFRC STRAIGHTENER

TECHNICAL DATA | ORTHOPAC GRVMC
Straightener Orthopac GRVMC
Mechanics Available only in semi-stand-alone form (control terminal separate),
2-skew rollers (3rd optional), 2-bow rollers (3rd optional)
Drive mechanism Hydraulic; contolled by a servo system;
Straightening capacity Max. skew ± 540 mm; max. bow ± 300 mm (2-bow rollers),
(with 3-bow or skew rollers +50% each)
Rate of roller adjustment Bow/skew adjustable, minimum of 4-5 seconds at maximum displacement
Fabric line-speed Max. 150 m/min
Fabric capacity 2-bow and 2-skew rollers: ~ 3500 mm
3-bow and 3-skew rollers: ~ 4900 mm
Scanner assembly 4-12 scanners, scanners positioned optimally by auto-controlled motor and
edge sensors or manually positioned via high-grade linear guides with
lock-in points
Max. fabric width 5500 mm
Dimensions See diagrams
Weight (at w = 5000 mm) ~ 3900 kg
Power supplies 3~ 380V/50Hz, 3~ 400V/50Hz, no neutral; transformer module available for
other voltages
Power consumption Max. 6,4 kVA (by fully-furnished combi-installations)
Ambient temperature Max. 45°C (no air conditioner)
Display and control terminal 15“ TFT tuchscreen in separate enclosure (ca. 520 x 400 x 252 mm, w x h x d);
10,4“ TFT touchscreen installed on end panel;
available as stand alone or semi-stand alone
28 Orthopac ® RVMC-12

Dimensions
b = Nennbreite (nominal width)
GRVMC straightener
91-013588
PERSONALITY
You’re not just a number to us. Your individual needs and
special requirements are our highest priority. We are there
for you with our expertise, our leading technology and full
dedication. So you can always play to win.
Orthopac 29
® RVMC-12
GRVMC STRAIGHTENER

TECHNICAL DATA | ORTHOPAC XRVMC
Straightener Orthopac XRVMC
Mechanics 3-skew rollers, 2- bow rollers (3rd optional)
Drive mechanism Hydraulic; controlled by a servo system
Rate of roller adjustment Bow/skew adjustable, minimum of 4-5 seconds at maximum displacement
Max. fabric width 3400 mm
Max. fabric line-speed 250 m/min (no tension control), 150 m/min (with tension control)
Fabric capacity (basic machine
with scanner assembly)
30 Orthopac ® RVMC-12
3-skew and 3-skew rollers: ~ 2900 mm
Scanner assembly 4-12 scanners, scanners positioned optimally by auto-controlled motor and
edge sensors or manually positioned via high-grade linear guides with
lock-in points
Dimensions See diagrams
Weight (at w = 1800mm) ~ 2500 kg
Power supplies 3~ 380V/50Hz, 3~ 400V/50Hz, no neutral; transformer available for
other voltages
Power consumption Max. 6,4 kVA (by fully furnished combi-installations)
Ambient temperature Max. 45°C (no air conditioner)
Display and control terminal 15“ TFT touchscreen in separate enclosure, (ca. 520 x 400 x 252 mm,
w x h x d); available as stand alone or semi-stand alone

Dimensions
CONTINUANCE
Our decades of experience has made us the reliable partner
which we are today. Independent, determined and forwardthinking.
So that we can also be here for you tomorrow.
= Antrieb (actuator)
b = Nennbreite (nominal width)
XRVMC straightener
91-014439
Orthopac 31
® RVMC-12
XRVMC STRAIGHTENER

Monitoring and control systems, automation:
MAHLO ® GUARANTEES QUALITY.
WORLDWIDE, IN YOUR VICINITY.
Best-possible technical support and transfer of know-how are written in capital letters at Mahlo ® .
Thanks to an international network of agencies and service centres, customers have at their disposal
competent support worldwide. We are there for you 365 days a year, 24 hours a day.
Just get in touch with us!
✓ Over 40 service centres worldwide
✓ Prompt service and supply of spare
parts within 24 hours
✓ Remote diagnostic system
✓ Service-hotline: +49-180-5062456
Overall management of Mahlo GmbH + Co. KG and all subsidiary companies:
Rainer Mestermann, Dipl.-Ing. (FH)
Alois Böckmann, State-certified Business Economist
Mahlo GmbH + Co. KG Germany
Donaustr. 12, 93342 Saal/Donau
Contact: Rainer Mestermann
Tel.: +49-9441-601-0
Fax: +49-9441-601-102
info@mahlo.com
Mahlo España S.L. Spain
C/ Santa Margarida, s/n - Nave n°13
Poligono Industrial Riera de Caldes - Boada Vell
E08184 Palau Solità i Plegamans (Barcelona)
Contact: Jordi Grass
Tel.: +34-90-20062-30
Fax: +34-90-20062-40
mahlo.espana@mahlo.com
WWW.MAHLO.COM
ORTHOPAC ® RVMC-12 84-010242-004-en
Subject to revision! © Mahlo GmbH + Co. KG
Mahlo Italia S.R.L. Italy
Via Fiume 62, 21020 Daverio
Contact: Michel Bruni
Tel.: +39-0332-94-95-58
Fax: +39-0332-94-85-86
mahlo.italia@mahlo.com
Mahlo Ouest S.P.R.L. Belgium
Quartum Center
Hütte 79 - Bte 10
4700 Eupen
Contact: Manfred Havenith
Tel.: +32-87-59-69-00
Fax: +32-87-59-69-09
mahlo.ouest@mahlo.com
Mahlo America Inc. USA
P.O. Box 2825, Spartanburg, S.C. 29304
Contact: Alan Lavore
Tel.: +1-864-576-62-88
Fax: +1-864-576-00-09
mahlo.america@mahlo.com
Mahlo do Brasil Controle de Processos Ltda.
Brazil
R. Brigadeiro Faria Lima, 354A - Jd. Santana
Amaericana, SP CEP 13478-210
Contact: Jordi Grass
Tel.: +55-19-3407-7954
mahlo.brazil@mahlo.com
Quality made
in Germany