Com4 Recycling Spinning System

Closing the loop for good

Pushing the boundaries with Com4recycling
Recycling systems for high-quality ring and compact yarns
Proven rotor recycling system to maximize the share of recycled material

Climate change and environmental degradation are some of the main concerns facing us today. With barely 1% of garments being recycled and three quarters of the world’s clothing ending up in landfill, the textile industry is actively seeking ways to make production patterns more sustainable and pay more attention to the entire life cycle of items of clothing. Rieter uses its technological expertise to offer a complete recycling spinning system for both ring and rotor spinning lines. This enables customers to spin fibers from used garments and waste into yarns.

Recycling in textile

One of the goals within the textile industry is to “close the loop,” which refers to the process of recycling and reusing products without material loss – or, in other words, using less raw material and diverting waste away from landfill.

This entails solving one of today's main challenges: recycling post-industrial and post-consumer waste. Until recently, recycled clothes have been used mainly into lower-value applications. Rieter's technological know-how enables yarns of sufficient quality to be produced for use in weaving and knitting applications, thus finally allowing to close the loop in textile.

Com4recycling-ring spinning process

Rieter offers a complete ring spinning system that is designed to processing recycled fibers in the best possible way. Due to the better integration of the fibers during ring spinning, ring yarn has a higher tenacity compared to rotor spinning. This opens a wider range of applications, namely the increased use of these yarns in weaving and knitting mills.

Com4recycling-compact spinning process

The recycling compact-spinning process enables customers to produce fine compact yarns with almost 40% recycled fibers and high yarn quality from demanding raw material. The comber removes very short fibers and neps from blends of recycled and virgin cotton. This makes it possible to increase the recycled content in the blend. At the same time, both unevenness and imperfections in the yarn are improved with the use of the comber.The compacting device COMPACTdrum significantly improves the running behavior of the ring spinning machine as well as hairiness and tenacity in the yarn.

Com4recycling-rotor spinning process

Rieter has optimized the rotor spinning technology, which is naturally adapted for applications using materials with short fibers. Special geometries and options allow for optimized adaptations. The fully automated machine combines high potential for yarn tenacity with the capability to handle many ends down with excellent piecing quality. With a blend of 80% post-consumer material and 20% recycled polyester, spinning yarn up to Ne 20 is possible.

Example of a recycled garment

The good pilling values of yarns from the Rieter recycling system make many different applications possible, from socks to sweaters. Chinos and workwear can be made out of recycled materials too. Chino pants like these are typically made with a blend of recycled cotton and virgin cotton.

Recycling journey:

A second-hand T-shirt
has its material torn to tear fibers
and recycled into high-quality yarns
to produce a chino pant.

Rieter recycling classification

To help spinners work with recycled fibers, Rieter has established a recycling classification system for the typical raw-material quality available on the market. The Rieter recycling classification makes it easier for spinners to estimate what targets can be reached depending on the material. The short-fiber content, mean fiber length and 5% fiber length are important parameters after the tearing process because they determine which subsequent spinning process (ring or rotor) should be used and which quality (uniformity) and maximum spinning fineness (yarn count) can be achieved.

Classification	SHORT-FIBER CONTENT	Mean Fiber Length	5% FIBER LENGTH
Very good	45%	17 mm	31 mm
Good	55%	14 mm	29 mm
Medium	60%	13 mm	28 mm
Poor	78%	10 mm	22 mm
Cotton as reference	24%	21 mm	34 mm

Yarn licenses for Com4recycling

To further establish recycled yarns in the market, they will be included in the proven Rieter Com4 yarn family. Com4 is a globally registered trademark for yarns spun on Rieter end spinning machines. Com4recycling licenses are now available for recycled ring, compact, and rotor yarns. Spinning mills that produce recycled yarns with a Rieter card, draw frame, and end spinning machine and also have Global Recycling Standard (GRS) certification can apply for a Com4recycling yarn license.

Machines for the Recycling Spinning System

VARIOline

The blowroom line VARIOline is the variable concept for optimally opening and cleaning fibers. This guarantees the highest level of yarn quality. All blowroom machinery is designed to support an impressive line production performance of up to 2 400 kilograms per hour. VARIOline consumes around 40% less energy than solutions from other providers.

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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 55 and draw frame SB-D 55

The new single-head draw frame generation is designed for highest productivity of up to 1 200 m/min delivery speed. The machines enable spinning mills to achieve highest sliver and yarn quality, also when processing recycled fibers. The enhanced expert system SLIVERprofessional is integrated into the convenient 10 inch touchscreen. A new level of robustness keeps the operating costs low.

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Autoleveler draw frame module RSB-Module 55

The direct connection of the card with the new autoleveler draw frame module RSB-Module 55 reduces the number of draw frame passages and improves the efficiency of the spinning mill.

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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

The ring spinning machine G 38 with the fully electronic drafting system allows an extraordinary flexibility. Standard and special yarns as well as compact yarns can easily be produced. The individual spindle monitoring system ISM premium reduces personnel costs significantly.

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Automatic winding machine Autoconer X6

The Autoconer X6 stands for efficiency, quality and flexibility. Thanks to its energy-efficient concept the machine uses up to 20% less energy than the previous model. The splicers with new open prisms OZ1 and OZ2 ensure the highest levels of splice quality. With the Multilink and Multilot material flow configuration, automation becomes even more flexible and cost-effective.

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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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Rotor spinning machine R 37

The rotor spinning machine R 37 has a new spinning box with adaptable trash extraction to provide more flexibility in raw material use. With up to 600 spinning positions, low energy consumption and time-saving handling, the R 37 is particularly economical. Fully independent machine sides provide high flexibility. The robot ROBOdoff, which is available as an option, automates package change.

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Downloads

Recycling – Brochure

English
PDF / 8 MB