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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.

Winding unit for the continuous production of fibre-reinforced thermoplastic pipe profiles (c) ITA. Winding unit for the continuous production of fibre-reinforced thermoplastic pipe profiles
30.03.2023

Composites made by ITA at JEC World 2023

  • Less C02 emissions + sustainable + recyclable

Sustainability first - this is the principle of the Institut für Textiltechnik (ITA) of RWTH Aachen University at JEC World 2023. ITA combines various lightweight construction technologies to reduce C02 and to use renewable and/or recyclable raw materials.

ITA presents innovations in the production of reinforcing fibres and in the textile processing of high-modulus fibres. It also shows the impregnation of high-modulus fibres with thermosetting and thermoplastic matrix systems.  

ITA will be exhibiting in hall 6 together with Textechno, Mönchengladbach, Germany, textile testing equipment and Maruhachi Fukui, Japan, Thermoplastic Composite Material Systems. The Interreg AACOMA project will also be presented at the stand. 

  • Less C02 emissions + sustainable + recyclable

Sustainability first - this is the principle of the Institut für Textiltechnik (ITA) of RWTH Aachen University at JEC World 2023. ITA combines various lightweight construction technologies to reduce C02 and to use renewable and/or recyclable raw materials.

ITA presents innovations in the production of reinforcing fibres and in the textile processing of high-modulus fibres. It also shows the impregnation of high-modulus fibres with thermosetting and thermoplastic matrix systems.  

ITA will be exhibiting in hall 6 together with Textechno, Mönchengladbach, Germany, textile testing equipment and Maruhachi Fukui, Japan, Thermoplastic Composite Material Systems. The Interreg AACOMA project will also be presented at the stand. 

Source:

ITA Institut für Textiltechnik of RWTH Aachen

01.07.2022

Award for best master's thesis of the German Textile Mechanical Engineering 2022 goes to young engineer of ITA Aachen

The 2002 prize of the Walter Reiners Foundation of the VDMA Textile Machinery Association for the best Master's thesis in German textile mechanical engineering was awarded to a young engineer from the ITA Institut für Textiltechnik of RWTH Aachen University. The prize ceremony took place at Techtextil 2022 in Frankfurt am Main, Germany. Peter D. Dornier, Chairman of the Board of the Walter Reiners Foundation, presented the award at the VDMA Textile Machinery Association’s booth.

Felix Xaver Zerbes, M.Sc., was awarded the "Promotional Prize for the Best Master's Thesis of the German Textile Machinery Industry 2022", endowed with 3,500 EUR, for his master's thesis "Development and Construction of a Separation Unit for Weft Yarns in Air Jet Weaving".

The 2002 prize of the Walter Reiners Foundation of the VDMA Textile Machinery Association for the best Master's thesis in German textile mechanical engineering was awarded to a young engineer from the ITA Institut für Textiltechnik of RWTH Aachen University. The prize ceremony took place at Techtextil 2022 in Frankfurt am Main, Germany. Peter D. Dornier, Chairman of the Board of the Walter Reiners Foundation, presented the award at the VDMA Textile Machinery Association’s booth.

Felix Xaver Zerbes, M.Sc., was awarded the "Promotional Prize for the Best Master's Thesis of the German Textile Machinery Industry 2022", endowed with 3,500 EUR, for his master's thesis "Development and Construction of a Separation Unit for Weft Yarns in Air Jet Weaving".

The subject of the master's thesis was the development of a mechanism with which faulty sections in the weft yarn can be sorted out before they are woven into the textile. This way, both yarn-related weft defects and material defects can be drastically reduced. The prototype developed by Mr Zerbes shows how this can be done even during the ongoing weaving process without having to stop production. Due to its modular design, the yarn rejection unit can be retrofitted to many different types of air-jet weaving machines, which represents an enormous savings potential not only in Germany but in weaving mills all over the world.

Source:

ITA – Institut für Textiltechnik of RWTH Aachen University

JEC World: METYX and ITA officially join forces (c) METYX
METYX and ITA officially join forces
11.05.2022

JEC World: METYX and ITA officially join forces

The ITA Group, consisting of the Institute for Textile Technology of RWTH Aachen University (ITA) and their research and development service provider ITA Technologietransfer GmbH (ITA GmbH) are proud to announce their new partnership with METYX Composites, Turkey today at JEC World in Paris. METYX is a globally leading manufacturer of high-performance technical textiles for applications in the transportation, wind energy, construction, sports and leisure industries.

Ugur Ustunel, CEO METYX Composites: “The access to ITA´s competences along the entire textile composite value chain and to the impressive machine parks with over 250 machines from lab scale to industrial scale and the exchange with other partners will be very welcome for our future pre-competitive developments.” Dr. Christoph Greb, Scientific Director of ITA: “We are very happy to welcome METYX to our
network and to collaborate in many joint projects and studies on topics like recycling and sustainability, tapes and hybrid yarns or natural fibres just to name a few.”

The ITA Group, consisting of the Institute for Textile Technology of RWTH Aachen University (ITA) and their research and development service provider ITA Technologietransfer GmbH (ITA GmbH) are proud to announce their new partnership with METYX Composites, Turkey today at JEC World in Paris. METYX is a globally leading manufacturer of high-performance technical textiles for applications in the transportation, wind energy, construction, sports and leisure industries.

Ugur Ustunel, CEO METYX Composites: “The access to ITA´s competences along the entire textile composite value chain and to the impressive machine parks with over 250 machines from lab scale to industrial scale and the exchange with other partners will be very welcome for our future pre-competitive developments.” Dr. Christoph Greb, Scientific Director of ITA: “We are very happy to welcome METYX to our
network and to collaborate in many joint projects and studies on topics like recycling and sustainability, tapes and hybrid yarns or natural fibres just to name a few.”

Dr. Michael Effing, Managing Director of AMAC GmbH: „I am very happy to support ITA in developing and growing their network. ITA is located in the centre of the RWTH Aachen University Campus in close proximity to numerous other institutes for lightweight developments.”

(c) ITA
3D braiding machine
05.06.2019

Institut für Textiltechnik der RWTH Aachen University (ITA) auf der ITMA

  • Neue 3D-Flechtmaschine und Mixed-Reality-Lernumgebung für den Webprozess

Das Institut für Textiltechnik der RWTH Aachen University (ITA) zeigt auf der ITMA im Under Linkway Stand D221 (UL D221) unter anderem das digitale Retrofitting einer 3D-Flechtmaschine zur Herstellung von dreidimensional verstärkten keramischen Turbinenkomponenten und eine Mixed-Reality-Lernumgebung für einen Webprozess zur Qualifizierung neuer und bestehender Mitarbeiter.

  • Neue 3D-Flechtmaschine und Mixed-Reality-Lernumgebung für den Webprozess

Das Institut für Textiltechnik der RWTH Aachen University (ITA) zeigt auf der ITMA im Under Linkway Stand D221 (UL D221) unter anderem das digitale Retrofitting einer 3D-Flechtmaschine zur Herstellung von dreidimensional verstärkten keramischen Turbinenkomponenten und eine Mixed-Reality-Lernumgebung für einen Webprozess zur Qualifizierung neuer und bestehender Mitarbeiter.

Digitales Retrofitting einer 3D-Flechtmaschine zur Produktion dreidimensional verstärkter keramischer Turbinenkomponenten
Basierend auf einer vorhandenen konventionellen Mechanik wurde eine 3D-Flechtmaschine digitalisiert und nach Industrie 4.0-Standard neu aufgebaut. Somit wird zum Beispiel das Prototyping und die Produktion dreidimensional verstärkter keramischer Turbi-nenkomponenten ermöglicht. Als virtuelle Mikrofabrik kann in einer entsprechenden Software-Umgebung die Verarbeitung sehr empfindlicher beziehungsweise spröder Fasermaterialien simuliert werden. Anschließend werden die Prozessdaten generiert und die Produktion in der realen Maschine abgebildet. Die Prozessstabilität wird somit auf annähernd 100 Prozent gesteigert, die Maschinengeschwindigkeit konnte um 150 Prozent erhöht werden. Die ortsunabhängige Simulations- und Steuerungssoftware (Open Source) erlaubt eine äußerst flexible Prozessplanung und –steuerung der Prozesskette mit einem mobilen Endgerät – im konkreten Anwendungsfall für die Herstellung eines textilen Preforms für eine keramische Komponente im Turbinenbau.

Mixed-Reality Lernumgebung für den Webprozess
Ausbildung und Qualifizierung von neuen und bestehenden Mitarbeitern sind gerade für Maschinen- und Textilhersteller wichtige Voraussetzungen für den Unternehmenserfolg. Das ITA hat hierfür eine  Lernumgebung an einem 3D-Modell einer-Bandwebmaschine entwickelt, die auf der Mixed-Reality-Technologie basiert. Unter Mixed-Reality versteht man die Vermischung von Daten aus der Realität und aus künstlichen 2D- oder 3D-Objekten (virtuelle Realität).

Das 3D-Modell einer Breitwebmaschine wird zur Veranschaulichung per Mixed-Reality-Technologie für den Mitarbeiter im Raum dargestellt. Eine Mixed-Reality-Brille überträgt schrittweise Arbeitsanweisungen zum Rüsten der Maschine auf reale Maschinenkomponenten. Nun kann der Mitarbeiter beispielsweise einen Prozessfehler, der zum Maschinenstillstand geführt hat, interaktiv an dem 3D-Modell beheben, ohne dass eine weitere Hilfestellung notwendig ist. Im konkreten Fall handelt es sich um den Bruch eines Schussfadens.

 

Bushing heated via induction of the novel glass fibre production line (c) ITA
Bushing heated via induction of the novel glass fibre production line
21.02.2019

ITA at JEC World 2019: newly constructed induction heated glass fibre production line among other exhibits

At the joint stand of the Aachen Centre for Integrative Lightweight Construction (AZL) in Hall 5A, booth D17, the Institut für Textiltechnik of RWTH Aachen University (ITA) will demonstrate its expertise in the field of glass fibres, preforms and textile concrete 12-14 March 2019 in Paris.
The exhibits come from various fields of application and address the automotive, aerospace and mechanical engineering sectors.

At the joint stand of the Aachen Centre for Integrative Lightweight Construction (AZL) in Hall 5A, booth D17, the Institut für Textiltechnik of RWTH Aachen University (ITA) will demonstrate its expertise in the field of glass fibres, preforms and textile concrete 12-14 March 2019 in Paris.
The exhibits come from various fields of application and address the automotive, aerospace and mechanical engineering sectors.

  1. Innovative glass fibre research at ITA
    The newly constructed induction heated glass fibre production line enables increased flexibility in research. For the first time, glass fibres will be produced live at the ITA booth at JEC World. One of the innovations of the system is the inductively heated bushing. It features a flexible design and consists of a platinum/rhodium alloy (Pt/Rh20) for use in high-temperature glasses.
    The glass fibre production line was designed in such a way that new concepts and ideas can be tested quickly. The modular design allows a high flexibility, the induction system a significantly faster operability.
    Research and development projects can therefore be carried out faster and more cost-effectively.
     
  2. DrapeCube - Forming of textile semi-finished products
    The DrapeCube offers a cost-effective design for the production of fibre preforms from textile semi-finished products. It is used in the production of preforms for prototypes and in small series and is suit-able for companies active in the production of fibre-reinforced plas-tics (FRP).
    In the production of FRP components, the preforming process de-fines a large part of the subsequent component costs. In small- and medium-sized enterprises, this process step is often still carried out manually. This results in high quality fluctuations and component prices. Especially in the case of highly stressed structural components, the fluctuation in quality leads to oversizing of the components.
    Thus, the lightweight construction potential of fiber-reinforced plastics is underused. One solution is offered by the stamp forming process adapted from the sheet metal forming industry for shaping rein-forcing textiles. The textile is inserted between two mould halves (male and female) and automatically formed. Due to high plant and tooling costs, this process is used almost exclusively in large-scale production.
    The ITA has developed the DrapeCube forming station which offers a cost-effective alternative and is able to completely reproduce the current state of the art for forming textile half branches. The process steps will be demonstrated in a video at the booth.
     
  3. Carbon fibre reinforced plastic (CFRP) preform
    The CFRP preform consists of carbon multiaxial fabrics formed by expanded polystyrene (EPS) to optimise draping quality. Preforms of increased quality can be produced by gentle, textile-compatible forming with foam expansion. For the first time, foam expansion was used to form preforms in such a way that the draping quality is improved compared to classic stamp forming.
    The advantages of the CFRP preform lie in the savings in plant costs, as the investment is much lower. In addition, the proportion of waste is reduced because near-net-shape production is possible. In addition, rejects are reduced, as fewer faults occur in the textile.
     
  4. Embroidered preform with integrated metal insert
    The 12k carbon fibre rovings are shaped into a preform using Tai-lored Fibre Placement (TFP) which is a technical embroidery pro-cess. For the further layer build-up, a fastener is not only integrated under the roving layers but also fixed by additional loops. The highly integrative preforming approach offers the possibility of reducing weight and process steps as well as increasing mechanical perfor-mance.
    Until now, inserts were glued or holes had to be drilled in the com-ponent. Bonded fasteners are limited by the adhesive surface. The bonding of fasteners into drilled holes results in high drill abrasion and thus high tool wear.
    The advantages of the embroidered preform with integrated metal fasteners are the reduction of scrap due to TFP preforming and the increase in the specific pull-out force. In addition, it is possible to automatize the production of integrative preforms. This makes the preform with integrated metal fasteners interesting for the automotive and aerospace industries.
Source:

Institut für Textiltechnik of RWTH Aachen University

Induktiv beheiztes Bushing der neuartigen Glasfaserspinnanlage (c) ITA
Induktiv beheiztes Bushing der neuartigen Glasfaserspinnanlage,
21.02.2019

ITA zeigt auf der JEC World 2019 u.a. neue Glasfaserspinnanlage

Am Gemeinschaftsstand des Aachener Zentrums für integrativen Leichtbau (AZL) in Halle 5A Stand D17 demonstriert das Institut für Textiltechnik der RWTH Aachen University (ITA) vom 12.-14. März 2019 in Paris seine Kompetenzen in den Bereichen Glasfasern, Preforms und Carbon Composites.
Die Exponate stammen aus unterschiedlichen Anwendungsfeldern und adressieren die Branchen Automotive, Luft- und Raumfahrt und Maschinenbau.

Am Gemeinschaftsstand des Aachener Zentrums für integrativen Leichtbau (AZL) in Halle 5A Stand D17 demonstriert das Institut für Textiltechnik der RWTH Aachen University (ITA) vom 12.-14. März 2019 in Paris seine Kompetenzen in den Bereichen Glasfasern, Preforms und Carbon Composites.
Die Exponate stammen aus unterschiedlichen Anwendungsfeldern und adressieren die Branchen Automotive, Luft- und Raumfahrt und Maschinenbau.

  1. Innovative Glasfaserforschung am ITA
    Der modulare Aufbau der neu entwickelten, induktiv beheizten Glasfaserproduktionsanlage ermöglicht hohe Flexibilität in der Forschung und das Induktionssystem eine deutlich schnellere Bedienbarkeit. Erstmalig werden am Stand des ITA Glasfasern live auf der JEC World hergestellt. Zu den Neuheiten der Anlage gehört das induktiv beheizte Bushing. Es hat ein flexibles Design und besteht aus einer Platin-/Rhodium-Legierung (Pt/Rh20) zum Einsatz für Hochtemperaturgläser. Die Glasfaserproduktionsanlage wurde so konstruiert, dass sich neue Konzepte und Ideen schnell erproben lassen.
     
  2. DrapeCube – Umformung textiler Halbzeuge
    Der DrapeCube bietet eine kostengünstige Konstruktion zur Herstellung von Faservorformlingen aus textilen Halbzeugen. Er kommt zum Tragen bei der Fertigung von Preforms für Prototypen und in der Kleinserie und eignet sich für Unternehmen, die in der von faserverstärkten Kunststoffen (FVK) tätig sind.
    Bei der Produktion von FVK-Bauteilen wird im Preformingprozess ein Großteil der späteren Bauteilkosten definiert. In kleinen und mittelständischen Unternehmen wird dieser Prozessschritt oft noch manuell ausgeführt. Daraus resultieren hohe Qualitätsschwankungen und Bauteilpreise. Besonders bei hochbelasteten Strukturbauteilen führt die Qualitätsschwankung dazu, dass die Bauteile überdimensioniert sind. So wird das Leichtbaupotential von faserverstärkten Kunststoffen zu wenig genutzt.
    Eine Lösung bietet das aus der blechumformende Industrie adaptierte Stempelumformverfahren zur Formgebung von Verstärkungstextilien. Dabei wird das Textil zwischen zwei Formhälften (Patrize und Matrize) eingelegt und automatisiert umgeformt. Dieses Verfahren kommt aufgrund hoher Anlagen- und Werkzeugkosten fast ausschließlich in der Großserie zum Einsatz. Das ITA hat die Formgebungsstation DrapeCube entwickelt, die eine kostengünstige Alternative bietet und in der Lage ist, den aktuellen Stand der Technik für die Formgebung textiler Halbzeige vollständig abzubilden. Am Stand werden die Prozessschritte in einem Video demonstriert.
     
  3. Kohlenstoffaserverstärkter Kunststoff (CFK)-Preform
    Der CFK-Preform besteht aus Carbon-Multiaxial-Gelege, das durch expandiertes Polystyrol (EPS) umgeformt ist, um die Drapierqualität zu optimieren. Durch die schonende, textilgerechte Umformung mittels Schaumexpansion können Preforms in erhöhter Qualität hergestellt werden. Erstmalig wurde die Schaumexpansion genutzt, um Preforms so umzuformen, dass die Drapierqualität im Vergleich zur klassischen Stempelumformung verbessert wird.
    Die Vorteile des so umgeformten CFK-Preforms liegen in der Einsparung von Anlagenkosten, da das Investment viel geringer ist. Dazu wird der Verschnittanteil reduziert, weil eine endkonturnahe Fertigung ermöglicht wird. Darüber hinaus wird der Ausschuß verringert, da weniger Fehler im Textil entstehen.
    Zielgruppe sind die Hersteller von faserverstärkten Bauteilen, insbesondere für die Klein- und Mittelserie, bei denen die klassische Stempelumformung nicht wirtschaftlich ist.
     
  4. Gestickter Preform mit integriertem Metallinsert
    Die 12k Carbonfaserrovings werden durch das Spezial-Stickverfahren Tailored Fibre Placement (TFP) zu einem Preform abgelegt. Beim weiteren Lagenaufbau wird der Insert nicht nur unter den Rovinglagen integriert, sondern durch zusätzliches Umschlaufen fixiert. Der hochintegrative Preformingansatz bietet die Möglichkeit zur Reduktion von Gewicht und Prozessschritten sowie zur Steigerung der mechanischen Performance.
    Bisher wurden Inserts geklebt oder es waren Bohrungen im Bauteil notwendig. Aufgeklebte Inserts sind durch die Klebefläche limitiert. Das Einkleben von Inserts in Bohrungen zieht hohe Bohrerabrasion und damit hohen Werkzeugverschleiß nach sich.
    Die Vorteile des gestickten Preforms mit integriertem Metallinsert bestehen in der Reduktion von Verschnitt durch TFP-Preforming und der Steigerung der spezifischen Ausreißkraft. Dazu besteht die Möglichkeit, die Herstellung integrativer Preforms zu automatisieren. Damit ist der Preform mit integriertem Metallinsert interessant für die Zielgruppe Automotive und Luft- und Raumfahrt.
Source:

Institut für Textiltechnik of RWTH Aachen University