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03.04.2024

Trützschler: Holistic approach to textile recycling

Trützschler expanded their portfolio to become the first full-liner in the preparation of textile waste – from mechanical recycling to the spinning preparation of torn secondary fibers.

The TRUECYCLED solution is the result of their cooperation with the company Balkan Textile Machinery INC.CO. in Turkey, which they announced at the ITMA 2023 trade event in Milan. Since then, Trützschler has received many inquiries for recycling systems.

Trützschler expanded their portfolio to become the first full-liner in the preparation of textile waste – from mechanical recycling to the spinning preparation of torn secondary fibers.

The TRUECYCLED solution is the result of their cooperation with the company Balkan Textile Machinery INC.CO. in Turkey, which they announced at the ITMA 2023 trade event in Milan. Since then, Trützschler has received many inquiries for recycling systems.

Success with a systems approach
Recycling systems face significant technological challenges. On average, torn fibers are much shorter than virgin fibers. The percentage share of short fibers in the fiber mass is much higher. Unopened yarn and fabric particles are also difficult to process. Not surprisingly, much academic and practical research is currently conducted to find solutions for these problems. Dr. Georg Stegschuster, a researcher specializing in textile recycling, believes a systems approach is needed. He is working at the Recycling atelier, a model factory for mechanical recycling in Augsburg, Germany, which is committed to delivering the latest technological insights for textile recycling. “A perfect fine-tuning between tearing and spinning preparation is key for obtaining the best possible quality results and avoiding unnecessary fiber shortening,” he says. “This can be achieved if you are in control of both processes – and have the necessary expertise for both processes too.”

Gentle but effective
In some cases, for example, it may be advantageous to have less aggressive settings in the tearing line. This can help avoid unnecessary fiber shortening. The remaining higher share of unopened fabric must then be handled in a high-performance spinning preparation line. This starts with the right blow room configuration for perfect opening, cleaning and blending. A card that is specially designed for recycling materials, such as the new TC 30Ri, can also enable gentle but effective treatment of fibers.

A shortened drafting process is also a must. The integrated draw frame IDF 3 can make this possible. The draft is high enough to provide excellent levelling of the numerous short fibers, but low enough to prevent floating fibers.

Full-liner in mechanical recycling and preparation of textile waste
Trützschler now offers a complete system covering the whole process, from cutting and tearing textile waste through to carding and drawing secondary fibers. Thanks to this holistic approach and Trützschler’s expertise for the whole process, manufacturers can avoid unnecessary fiber shortening.

Source:

Trützschler Group

Recycled yarn (c) ITA Aachen
05.05.2023

ITA at the ITMA: Smart Circular Economy

"ITA Aachen and ITA Augsburg are part of the ITA Group International Centre for Sustainable Textiles. Experience our textile innovations at two exhibition booths," explains ITA Institute Director Professor Dr. Thomas Gries. "See our ring spinning tester at booth H3-B304, which spins recycled fibres sustainably and individually in a previously impossible fineness. In addition, there is digital yarn monitoring, which enables new market potentials. Get an idea of the Recycling Atelier of ITA Augsburg at booth H3-A207 and see the textile cycle from used textile to solution steps for industrial implementation together with industry partners. Join us on the Walk4Recycling and follow the path from used textile to a new knitted pullover on a tour of the trade fair. This is how we live up to our claim as the ITA Group: sustainable - digital - individual."

"ITA Aachen and ITA Augsburg are part of the ITA Group International Centre for Sustainable Textiles. Experience our textile innovations at two exhibition booths," explains ITA Institute Director Professor Dr. Thomas Gries. "See our ring spinning tester at booth H3-B304, which spins recycled fibres sustainably and individually in a previously impossible fineness. In addition, there is digital yarn monitoring, which enables new market potentials. Get an idea of the Recycling Atelier of ITA Augsburg at booth H3-A207 and see the textile cycle from used textile to solution steps for industrial implementation together with industry partners. Join us on the Walk4Recycling and follow the path from used textile to a new knitted pullover on a tour of the trade fair. This is how we live up to our claim as the ITA Group: sustainable - digital - individual."

ITA Aachen - Digital ring spinning tester for recycled fibres enables spinning of fine yarns with high recycled fibres content
The Institut für Textiltechnik of RWTH Aachen University (ITA) will be exhibiting a digital ring spinning tester, which spins recycled fibres directly and conventionally with a particularly high content of 60-70 percent. Up to now, recycled yarns have mainly been rotor-spun in this blend ratio. This results in rather coarse yarns and is not suitable for finer textiles such as outerwear. Ring spinning of recycled yarns now enables the spinning of finer yarns and thus a higher application level for recycled materials.

A unique selling point of the ITA ring spinning tester is the simultaneous spinning in the direct spinning process from the sliver and in the classic ring spinning process. For this purpose, the strength and elongation of the spun yarn are determined online and digitally for the first time. The real-time measurement allows process parameters and yarn properties to be adjusted iteratively and quickly. The ring spinning tester was upgraded from an existing tester to Industry 4.0 standard and is operated via a tablet. Operation via tablet enables the adjustment of process parameters including online quality monitoring remotely from anywhere in the world.
 
For this purpose, the ring spinning tester is also able to produce fine ring spun yarns. These yarns made from recycled material opens up a multitude of further fields of application for woven and knitted goods. Now, for example, clothing and technical textiles can be made from recycled material, the production of which was not possible before - such as outerwear made from recycled material. The development of new industries and fields of application opens up new market potential for recycled yarns - also and especially for processing in Europe. This creates the opportunity to preserve key technologies and jobs in cost-intensive locations.

ITA Augsburg - Recycling Atelier: Walk4Recycling
The Recycling Atelier of the Institut für Textiltechnik Augsburg gGmbH on stand H3-A207 presents the textile recycling from used textiles into new products via the various process steps and, together with the industrial partners, opens up solution paths for industrial implementation.

Under the headline "Walk4Recycling", a tour of the fair shows the cycle of used textiles from used knitwear into a new knitted pullover via a ring yarn made from a blend of 65 percent recycled cotton and 35 percent virgin polyester. The key innovation here is the high proportion of recycled fibres from post-consumer textiles for a ring yarn of this fineness. Today, mainly coarse rotor yarns for low-quality textiles are spun from these materials. The industrial partners participating in the Walk4Recycling are partners of the Recycling Atelier and contribute with their technologies to the fact that fibre material from old clothes can be processed in various process stages into a yarn of new value and high-quality ready-made garments.

The Walk4Recycling offers visitors the opportunity to experience a complete recycling cycle with the numerous process stages from tearing the old textiles, preparing and spinning the fibres and knitting a new jumper live during the fair. Get detailed information on the mechanical recycling of clothing via QR code, website and flyer about the participating exhibitors and their machines and technologies. A short movie will give you additional insights into the various processes involved in the production of the jumper.

02.03.2023

Recycling Atelier Augsburg and Kelheim Fibres cooperate

Kelheim Fibres, a leading manufacturer of viscose speciality fibres, has joined Recycling Atelier Augsburg. Recycling Atelier Augsburg is a unique centre for research and development in the field of textile recycling. It is located at the Institut für Textiltechnik Augsburg an affiliated institute of Augsburg University of Applied Sciences. The two institutions founded the Recycling Atelier in June 2022 together with twelve partners from the German textile industry.

In the Recycling Atelier, the focus is on the triad of technical and ecological sense as well as economic benefit. In this way, the partners of the Recycling Atelier are standing up against fast fashion, outsourced corporate responsibility and a general decline in raw material quality, which often fuels downcycling - the low-quality reuse - of materials.

Kelheim Fibres, a leading manufacturer of viscose speciality fibres, has joined Recycling Atelier Augsburg. Recycling Atelier Augsburg is a unique centre for research and development in the field of textile recycling. It is located at the Institut für Textiltechnik Augsburg an affiliated institute of Augsburg University of Applied Sciences. The two institutions founded the Recycling Atelier in June 2022 together with twelve partners from the German textile industry.

In the Recycling Atelier, the focus is on the triad of technical and ecological sense as well as economic benefit. In this way, the partners of the Recycling Atelier are standing up against fast fashion, outsourced corporate responsibility and a general decline in raw material quality, which often fuels downcycling - the low-quality reuse - of materials.

As a model factory, the Recycling Atelier Augsburg combines the most important processes of textile recycling and offers holistic and comprehensive research along the value chain," explains Georg Stegschuster, head of the Recycling Atelier Augsburg. The scientists research on all process steps of textile recycling: from material analysis to sorting, preparation and textile processing to sustainable product design. Comprehensive data collection and the use of artificial intelligence as well as innovative materials play a central role.

Kelheim Fibres is a producer of high-quality viscose fibres, which consist of cellulose, the main component of the renewable raw material wood, and are used worldwide for products in areas such as hygiene, textiles, and technical applications.

"In New Business Development as well as Fibre and Application Development, we follow the Open Innovation concept - the cooperation with the Recycling Atelier offers us an ideal platform for this. Here we work with partners to advance sustainability and performance," explains Maik Thiel, project manager at Kelheim Fibres.

Recycled cotton fibres are often very short or of uneven length, which makes further processing of 100 % recycled material a challenge. Adding speciality fibres from Kelheim Fibres should enable the production of high-quality new products, such as nonwovens. In the future, the fibres provided by Kelheim Fibres will also be made from recycled pulp.

Source:

Kelheim Fibres GmbH

(c) Matthias Leo / Hochschule Augsburg
21.06.2022

Recycling Atelier in Augsburg eröffnet

  • ITA Augsburg und Hochschule Augsburg setzen Modellfabrik zum nachhaltigen Stoffkreislauf im Rahmen des KI-Produktionsnetzwerks Augsburg um

Nur ein Prozent der Textilien wird aktuell im weltweiten Stoffkreislauf recycelt. Schnelllebige Modetrends, die ausgelagerte Unternehmensverantwortung und eine allgemein sinkende Rohstoffqualität befeuern diese Entwicklung. Das Recycling Atelier, das die Hochschule Augsburg und das Institut für Textiltechnik Augsburg (ITA Augsburg) eröffnet haben, stellt sich diesem Trend entgegen.

Das Recycling Atelier ist die erste Modellfabrik, die sich in Forschung und Entwicklung gemeinsam mit Partnern aus der Industrie dem nachhaltigen Stoffkreislauf entlang der kompletten textilen Produktionskette widmet.

  • ITA Augsburg und Hochschule Augsburg setzen Modellfabrik zum nachhaltigen Stoffkreislauf im Rahmen des KI-Produktionsnetzwerks Augsburg um

Nur ein Prozent der Textilien wird aktuell im weltweiten Stoffkreislauf recycelt. Schnelllebige Modetrends, die ausgelagerte Unternehmensverantwortung und eine allgemein sinkende Rohstoffqualität befeuern diese Entwicklung. Das Recycling Atelier, das die Hochschule Augsburg und das Institut für Textiltechnik Augsburg (ITA Augsburg) eröffnet haben, stellt sich diesem Trend entgegen.

Das Recycling Atelier ist die erste Modellfabrik, die sich in Forschung und Entwicklung gemeinsam mit Partnern aus der Industrie dem nachhaltigen Stoffkreislauf entlang der kompletten textilen Produktionskette widmet.

Das Recycling Atelier bietet als erste Modellfabrik ein weltweit bisher einzigartiges Konzept für ein ganzheitliches Recycling von Textilien an. Die Wissenschaftler:innen von ITA und Hochschule forschen dort an sämtlichen Prozessschritten des Textilrecyclings: von der Materialanalyse, über die Sortierung, die Aufbereitung und die textile Verarbeitung, bis hin zur Produktgestaltung. Sie betreiben die Prozesse zunächst modellhaft mit dem Fokus auf einer sinnhaften Produktion, bevor dann die Skalierung auf einen industriellen Produktionsmaßstab erfolgt.

Die Schwerpunkte des Recycling Ateliers liegen auf der Entwicklung neuer Produkte und Prozesse für textile Sekundärrohstoffe und der Erarbeitung von Konzepten für das vollständige Verwerten von Alttextilien mit bestmöglicher Qualität sowohl durch integriertes und hochwertiges Recycling als auch durch kreislauforientiertes Produktdesign. Die Ergebnisse münden letztendlich im industriellen Einsatz von Recyclingkonzepten und schlagen die Brücke hin zu aktuellen Geschäftsmodellen.

Bei jedem Prozessschritt unterstützen Unternehmen aus der gesamten Wertschöpfungskette die Forschung und bringen die industrielle Sichtweise und Kompetenz ein. In einem großen Workshop-Areal bietet das Recycling Atelier in Kooperation mit internationalen Unternehmen die Möglichkeit, die Produkte der Firmen auf den Prüfstand zu stellen und im direkten Austausch neue Konzepte für eine nachhaltige Textilproduktion zu erarbeiten.

Der Augenmerk liegt vor allem auf dem Bereich der Digitalisierung: Durch eine hochwertige und moderne Erfassung, Aufbereitung und Auswertung von Daten sollen neue Produktionsprozesse ermöglicht werden. Dabei wird der Einsatz von Künstlicher Intelligenz im Bereich des maschinellen Lernens und der Neuronalen Netze für die Textilbranche erforscht.

Das Recycling Atelier ist ein Beitrag der Hochschule Augsburg und des ITA Augsburg zum KI-Produktionsnetzwerk Augsburg. Das KI-Produktionsnetzwerk Augsburg, eingerichtet von der Bayerischen Landesregierung, ist ein Verbund von zahlreichen KI-Kompetenzträgern im Großraum Augsburg. Verbundpartner sind die Universität Augsburg, das Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV, das Zentrum für Leichtbauproduktionstechnologie (ZLP) des Deutschen Zentrums für Luft- und Raumfahrt (DLR) in Augsburg sowie die Hochschule Augsburg. Beteiligt sind zudem auch regionale Industriepartner. Ziel ist eine gemeinsame Erforschung KI-basierter Produktionstechnologien an der Schnittstelle zwischen Werkstoffen, Fertigungstechnologien, datenbasierter Modellierung und digitalen Geschäftsmodellen.

Source:

Hochschule Augsburg/ITA Augsburg