Unique Solutions for Processing Man-Made Fibers

Man-made fibers are on the rise. Blends with different fiber materials are particularly popular. When processing man-made fibers and blends, short-staple spinning mills face different challenges than with natural fibers. The most important challenges are the fiber finish, imperfect material in the form of fiber packages, the electrostatic charge, and the risk of heat-induced damage. Rieter machines offer unique solutions for processing man-made fibers and blends from the blowroom to end-spinning and have been used in this field already for many years.

In addition to addressing these challenges, Rieter systems stand out for their flexibility in adapting to a wide range of fiber types and blend ratios, enabling mills to respond quickly to market demands. The low conversion costs achieved through optimized machine efficiency and energy-saving technologies contribute to higher profitability. Furthermore, Rieter’s advanced spinning solutions ensure excellent yarn quality, even when working with demanding synthetic materials and blends, supporting consistent downstream performance.

Expected Volume in 2030

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Man-made fibers
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Natural fibers

Special solutions for man-made fibers

Blowroom

Man-made fibers need no cleaning, but they require especially careful opening. The Rieter opening line therefore offers different modules and clothings to adapt to different raw materials. The precision blender A 81 is well suited for the constant mixing of different raw materials. For small lots and limited space, the mixing bale opener B 34 and the UNImix B 72 are ideal.

Rieter precision blender UNIblend A 81 cross section — Perfect blending ratios with the UNIblend A 81

Rieter mixing machine UNImix B 72 cross section — The UNImix B 72 for optimal blending in the smallest space

Special clothings for man-made fibers in the Rieter opening line — Special clothings in the Rieter opening line

Solutions for man-made fibers

Gentle opening of man-made fibers with S-modules and bypass option for high flexibility
Special clothings for man-made fibers
Consistent blending performance in the 1% range with UNIblend A 81
The mixing bale opener B 34 is ideal for small lots
For thorough mixing of the metered fibers, the UNImix B 72 and B 76 are the right choice

Card C 81

The C 81 card sets new standards in productivity and sliver quality for man-made fiber applications. With its industry-leading technological carding area and the longest pre- and post-carding zones, it allows for optimal adjustment of opening intensity. Equipped with 40 working flats and a 1.5-meter working width, the C 81 features the largest active carding area in its class. Combined with Carding Gap Control (CGC), it delivers exceptional performance and consistent quality.

Cross section of the Rieter carding machine C 80 — Cross-section of the card
C 80 to process man-made fibers

Removable web bridge for easy cleaning of Rieter card C 80 — Removable web bridge for easy cleaning

Card C 81 - Carding Gap Control (CGC) — Carding Gap Control (CGC) enables minimal carding gaps

Solutions for man-made fibers

Optimally adjustable opening intensity thanks to long pre- and post-carding zones
Carding Gap Control (CGC) enables minimal carding gaps for superior sliver quality
Removable web bridge allows for easy and efficient cleaning
High-performance clothing by Graf designed specifically for synthetic fibers
Web-guided delivery unit ensures high delivery speeds with excellent web control
Stainless steel technology components for enhanced performance

Draw frames (R)SB-D 55 and (R)SB-D 27

The sliver-run up to the coiler of the draw frames (R)SB-D 55 and (R)SB-D 27 has been designed for high delivery speed – also with the processing of man-made fibers and blends. The perfect sliver-guidance is particularly important with bulky material.

Coiler CLEANcoil-PES with special coating for processing 100% polyester

Solutions for man-made fibers

Trouble-free processing of bulky fibers with the power creel with bigger guiding funnels
Long cleaning cycle and high yarn quality with polyester thanks to the coiler CLEANcoil-PES with special coating
The sliver jam straightener (RSB) avoids possible sliver jams in the coiler keeping downstream efficiency high
High speed and quality with big top rollers with cleaning lips
The expert system SLIVERprofessional now also includes additional important setting parameters of coiler speed, can speed and others for rapid material change and excellent quality.
Longer roller lifetime due to quick pressure release to prevent hard laps

Roving frame F 40/F 20 and F 37

The unique technology of the roving frames F 40/F 20 and F 37 ideally prepare the roving for the ring spinning machine also when processing man-made fibers. With the optional electronic drafting system drive the main draft and break draft can be set on the machine’s touchscreen in no time to suit the characteristics of man-made fibers. Constant monitoring of the roving and bobbin build-up ensures the highest roving quality for all raw materials.

Rieter roving frame F 19/F 39 sensors — Sensor technology guarantees highest roving quality during the entire bobbin build-up

Rieter roving frame electronic drafting system — Easy setting of the drafting system thanks to the electronic drafting system drive.

Solutions for man-made fibers

Constant quality over the entire bobbin thanks to the monitoring of bobbin build-up with sensors
Reliable tearing procedure during the doffing process to cope with the high tenacity of man-made fibers
Stepless adjustment of the sliver in-feed speed to avoid false draft with F 20/F 40.
Special features for MMF applications such as twist caps and special cradles are available
Optimal adaptation to the properties of the raw material with the electronic drafting system drive

Ring spinning machine G 38

Synthetic fibers and their blends with cotton are commonly processed on ring spinning machines. Different blends with cellulosic fibers are another popular application. In general, ring spinning is very flexible compared to other spinning processes and reacts less sensitively to fiber finish deposits which is a common challenge when processing man-made fibers.

Stepped nose bar in combination with active cradle without pin

SERVOgrip with knife, closed (left side) and open (right side)

Solutions for man-made fibers

Better guidance of the fibers with a stepped nose bar in combination with active cradle without pin
Reliable cutting during doffing even for yarns with high tenacity thanks to SERVOgrip with knife
High yarn quality with special rings and travelers for man-made fibers
Increased lifetime thanks to reinforced front edges for separators
Less fiber lapping with long and fine fibers thanks to the bottom roller with a diameter of 30 mm
Clean suction duct thanks to pneumatic flush valve
Optimal adaption to the cut lengths of man-made fibers by adjusting the width of the drafting zone

Rotor spinning machine R 70

Rotor spinning has its undisputed advantages when spinning staple fibers, e.g., cotton with a high short-fiber content, but it is also well-suited for man-made fibers. Due to the rotor technology, blends of longer and shorter fibers can be handled more easily than with other spinning technologies. Polyester fibers and other MMF can typically serve as supporting fibers in combination with recycled cotton. When processing large quantities of short fibers, better yarn quality can be achieved due to the longer staple of MMF. Thanks to the high evenness of rotor yarn, 100% polyester and polyacrylic is also processed to produce standard yarn and yarn for technical applications.

CHANNELpass versions for cotton, polyester and viscose

Intensive cleaning of the rotor groove before each piecing

Solutions for man-made fibers

Exchangeable CHANNELpass for optimal fiber separation on opening roller surface for cotton, polyester, viscose and its blends
Channel inserts Sx for various rotor diameter with improved fiber transport and formation for higher yarn strength
Excellent spinning stability with the redesigned BYpass which features highly efficient extraction of fibre bundles,
Potential for higher production speeds thanks to Cool Nozzle Technology which avoids thermic fiber damage
Better fiber flow with SPEEDpass
Intensive pneumatic cleaning of rotor groove before each piecing process and mechanical rotor cleaning when needed by the robot during the doffing cycle

Air-jet spinning machine J 70

Air-jet spinning is the dominant choice for processing cellulosic fibers – mainly viscose – and their blends with cotton. The J 70 offers several unique features for this. The machine is also well suited for processing blends with polyester: cotton with a proportion of up to 65% polyester and viscose with a proportion of up to 80% polyester. The development of new technology components allows the spinning of these applications at highest productivity and yarn quality level without additives.

Spinning nozzle housing Z+1 HS for high yarn tenacity and production speed

Solutions for man-made fibers

High yarn tenacity and production speed with viscose thanks to the new spinning nozzle housing Z+1 MS
Stable fiber flow with the reshaped fiber feeding element
Easy cleaning thanks to the option of opening the spinning nozzle housing
Process security with all fibers and blends with the Q 30 AFW yarn clearer including the weak yarn detection channel
Uniform package quality and efficient downstream performance with pneumatic package damping
No removal of additives in the downstream process.

Machines for processing man-made fibers

VARIOline

UNIblend A 81

Precision mixing in the 1% range

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Card C 81

The card C 81 offers the largest active carding area on the market, supported by artificial intelligence. Its latest innovations Carding Gap Control and Trash Level Monitor contribute to higher production of up to 40%, excellent sliver quality and an optimized fiber yield. In addition, the card C 81 is also the most energy-efficient card on the market, thus saving valuable resources.

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Autoleveler draw frame RSB-D 27

With two completely independent heads, the autoleveler draw frame RSB-D 27 achieves unmatched sliver quality and delivers with a delivery speed of up to 1 200 m/min. Its new level of robustness keeps the operating costs low, while its compact dimensions make it ideal for space-saving applications.

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Fully automatic roving frame F 40 and semi-automated roving frame F 20

The new generation of roving frames produces first-class rovings with low conversion costs. The fast doffer installed in the F 40 ensures a high level of efficiency. With up to 252 spinning positions, the machine is ideally suited to long ring spinning machines.

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Ring spinning machine G 38

Spindle speeds of up to 28 000 rpm and lowest energy consumption of the G 38 lead to maximum profitability in ring spinning. 25% faster doffing with optimized cop transport and the new short balloon setting increase production time.

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Rotor spinning machine R 70

The fully automatic rotor spinning machine R 70 sets new standards in terms of its high productivity, improved raw material utilization and low energy consumption. This is achieved by incorporating independent, state-of-the-art automation at every spinning position as well as an advanced version of the proven spinning box technology.

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Air-jet spinning machine J 70

With 200 autonomous spinning units and novel technology components, the air-jet spinning machine J 70 offers efficient yarn production and delivery speeds of 600 m/min. Further reduced energy consumption and highest fiber yield significantly reduce yarn manufacturing costs.

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Unique Solutions for Processing Man-Made Fibers – Brochure

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