From the Sector

Together with Cotton made in Africa (CmiA) and the cotton company MMP Agro, the GoodTextiles Foundation is realising a project to improve the drinking water supply in Uganda, Africa. Bio-sand-waterfilters are being installed to gently purify the water from existing sources. In addition, the partners are training the community's farmers and craftsmen in how to operate the water filters. They then learn how to build new water filters.

In 2016, the textile company Dibella established the GoodTextiles Foundation with the aim of making textile value chains more sustainable. It raises donations and implements its own funding projects to benefit people at all stages of the textile industry.

As part of a joint project between the GoodTextiles Foundation, the Aid by Trade Foundation (AbTF) (owner of the CmiA standard) and MMP Agro, farmers who grow CmiA cotton in the districts of Abim, Kaplebyong, Dokolo and Kaberamaido in north-east Uganda are now receiving a total of around 1,000 bio-sand-waterfilters. Around 1,000 CmiA farmers, mainly women and the members of their households (an estimated 10,000 community members) benefit from this.

Um zu verhindern, dass Mikroplastik aus Waschmaschinen in die Umwelt gelangt, haben Forschende des Fraunhofer UMSICHT den Zentrifugalfilter fibrEX entwickelt. Der flexibel integrierbare und wartungsfreie Filter trennt aus Waschwasser mikroskopisch kleine Kunstfasern ab. Aktuell werden potenzielle Partner für die letzten Schritte bis zur Markteinführung gesucht.

Textilien aus Kunstfasern wie Polyester und Elasthan halten Regen ab, sind strapazierfähig und dabei trotzdem elastisch. Ihr Anteil in hiesigen Kleiderschränken liegt bei über 60 Prozent liegt. Auch diese Kleidung muss gewaschen werden –im Fall von Sportbekleidung sogar sehr oft. Während des Waschvorgangs werden Fragmente der Kunstfasern abgerieben, die höchstens ein Fünftel so dick sind wie ein menschliches Haar. Aufgrund von Größe und Material zählen sie zu Mikroplastik, jenen mikroskopisch kleinen Kunststoffpartikeln, die – einmal in die Umwelt gelangt – nur schwer abbaubar sind.

„Zwischen 20 und 35 Prozent des weltweit verbreiteten Mikroplastiks sind synthetische Mikrofasern aus Textilien. Synthetische Textilien sind demnach eine der größten Mikroplastik-Quellen und stehen im Fokus von Politik und Gesellschaft“, so Dr.-Ing. Ilka Gehrke, Leiterin der Abteilung Umwelt und Ressourcennutzung am Fraunhofer UMSICHT. Auf europäischer Ebene laufen bereits Prozesse zur Vorbereitung von Richtlinien gegen die Freisetzung von synthetischen Mikrofasern. „In Frankreich etwa dürfen ab 2025 keine Waschmaschinen ohne Mikrofaserfilter mehr in Verkehr gebracht werden.“

Bisher sind kaum Waschmaschinen mit entsprechenden Filtern auf dem kommerziellen Markt erhältlich. Und solche, die es zu kaufen gibt, halten zwar die Mikrofasern zurück, verlieren aber schnell an Leistung. Die Kleinstfasern werden am Filtermaterial zurückgehalten, bilden eine Deckschicht und führen so zur Verblockung des Filters. Im schlimmsten Fall kann kein Waschwasser mehr abfließen, sodass der Waschprozess zum Stillstand kommt.

Als Lösung dieses Problems haben Forschende des Fraunhofer UMSICHT den kürzlich patentierten Zentrifugalfilter fibrEX entwickelt. Anders als ein Siebsystem, nutzt er die Dichteunterschiede von Kunstfasern und Wasser und trennt beim Schleudern die beiden Komponenten voneinander. Der Zentrifugalfilter kann sowohl in die Waschmaschine eingebaut als auch als externes Gerät betrieben werden; zum Betrieb wird keine weitere nennenswerte Energie benötigt.

Nach einer einjährigen Testphase im Waschlabor und technischen Optimierungen hält fibrEX nun dauerhaft und wartungsfrei mindestens 80 Prozent der synthetischen Mikrofasern aus dem Waschwasser zurück. Es werden Waschmaschinenhersteller gesucht, fibrEX gemeinsam zur Marktreife zu bringen.

Geosynthetics have become an indispensable part of the construction industry. PP nonwovens, for example - mechanically bonded continuous fibres made from specially UV-stabilised polypropylenes - are often used in blanket form as barriers, screens and filters, and their strength extends the service life of construction projects. Whether for road construction, or as barrier on glaciers or against weeds - there are myriad applications.

TenCate Geosynthetics uses the PURE LOOP ISEC evo technology to recycle this type of PP nonwoven. The European company, with locations in Austria, France and the Netherlands, is specialised in the development and production of geotextiles for modern civil engineering applications. The edge trimmings and production rejects generated during manufacturing used to be recycled at the Linz site, but not fed back into the company's own production process.

"The demands on us were high," recalls Patrick Wiesinger, project manager at PURE LOOP. "The PP nonwoven is highly tear resistant, which means its a very challenging recycling process. Our ISEC evo machine conserves the quality of the production waste really well during recycling, so we were able to achieve the specified increase in quality for the recyclates."

Another advantage of PURE LOOP technology is the wide range of shapes in which the production scrap can be delivered for processing. "Our ifeed technology with double feed ram system and singleshaft shredder offers the ideal conditions for direct processing of these large rolls - and without the need for prior preparation of the input material by employees before the material is fed into the recycling process", emphasizes Patrick Wiesinger. With the ISEC evo recycling machine TenCate can now manufacture its high-strength PP nonwoven product with a recyclate content of up to 10 percent.

With the goal of making recycling of lightweight, high-volume fiber and flake recyclate much more economical and, in some cases even possible, Coperion has developed a new version of its ZS-B side feeder. Using the innovative ZS-B MEGAfeed, plastic recyclate with a bulk density under 200 kg/m³, long considered intake-limited and thus not worth recycling, can be reliably fed in large quantities into Coperion’s ZSK twin screw extruder and be concurrently recycled and compounded.

The ZS-B side feeder’s novel design makes it possible to feed very high rates of fiber and flakes, such as PA, PE, PET, and PP. As a result, the ZSK twin screw extruder’s high capacity can be fully exploited when the ZS-B MEGAfeed is used. Very high throughputs in both mechanical and chemical recycling of post-industrial and post-consumer waste are achieved.

Increased Throughput in Numbers
With a ZSK 58 Mc18 twin screw extruder, the throughput increase and thus the potential of the new ZS-B MEGAfeed becomes very clear. When recycling PA fibers with a bulk density of ~40-50 kg/m3, throughputs of 70 kg/h were previously achieved using conventional equipment. When the PA fibers were fed into the ZSK extruder using the ZS-B MEGAfeed, throughputs increased about fourteenfold to 1,000 kg/h. Similar results were achieved recycling carbon fibers with a bulk density of ~50-70 kg/m3; in this case, throughputs increased from 50 kg/h to 2,500 kg/h using the ZS-B MEGAfeed. When recycling PCR (Post-Consumer Recycled) flakes, throughputs increased from 50 kg/h to 700 kg/h, and from 80 kg/h to 1,300 kg/h with multilayer film flakes.

Key to Economical Recycling of A Wide Variety of Plastics
Plastics previously considered not recyclable are becoming a valuable raw material using the new Coperion ZS-B MEGAfeed. For example, PCR flakes or recyclate from carbon fiber-reinforced plastics can now be fed into the ZSK extruder at high feed rates and recycled economically.

In the case of mechanical upcycling, upstream processes necessary for compounding, such as compacting, melting and agglomeration, are completely eliminated using the ZS-B MEGAfeed technology. In this recycling process, flakes and fibers can be fed directly into the ZSK extruder, where they are melted, compounded, devolatilized, and filtered in a single step. In so doing, both investment costs and energy consumption drop. The production process becomes significantly more efficient. Moreover, the thermal product stress is reduced and recyclate quality increases.

Even when recycling PET, the feed rate is no longer a limiting factor. With the ZS-B MEGAfeed, PET flakes and fibers can be fed into the ZSK twin screw extruder in large quantities with no pre-drying or crystallizing, where they can be processed with the highest degree of profitability.

The ZS-B MEGAfeed can also feed large quantities of post-consumer waste, adding appreciable value to the chemical recycling process with the ZSKs. ZSK throughput rates are very high with the ZS-B MEGAfeed. Preheating of the recyclate via mechanical energy input of the twin screws thus becomes even more economical for further processing in the reactor.

Existing Coperion extruders can be retrofitted with ZS-B MEGAfeed technology to greatly expand their spectrum of applications and increase their throughput rates.

Freudenberg Performance Materials (Freudenberg) is endorsing further sustainable products with its ECO-CHECK label introduced last year. These products comply with various environmental criteria. With immediate effect, five more solutions bear the label making the company’s commitment to sustainability visible.

Leather goods
The newly-endorsed ECO-CHECK products include one Evolon® microfilament textile application. This is a reinforcement material for leather goods that is manufactured with no solvent and no binder. It contains up to 80 percent recycled PET and is suitable for a broad range of applications. The material is produced at Freudenberg’s facility in Colmar, France, where the manufacturing process is highly sustainable: it is certified to STeP by OEKO-TEX® and fully complies with the DETOX TO ZERO by OEKO-TEX® criteria.

Healthcare applications
In the field of healthcare, the bio-based M 1714 wound pad with superior absorption for more challenging wounds has now been endorsed with the ECO-CHECK label. The dressing consists of a mix of bio-based fibers derived from natural sources and exhibits a smooth wound contact layer. The product has been evaluated for industrial compostability and conforms to ISO 13432.

Architectural applications
The sustainable TF 400 Eco F mesh fabric for textile architecture from Mehler Texnologies® now also bears the ECO-CHECK label. Its yarn is made of 100% recycled PET bottles and its characteristics are very similar to those of conventional mesh fabrics. In 2021, it was awarded first place by the Architectural Membrane Association (AMA) in the “product” category in recognition of its properties.

Shoes
In the shoe industry, the binder-free strobel insoles have been endorsed as particularly sustainable. They contain a high percentage of recycled green bottle flakes. Moreover, the insoles themselves are fully recyclable.

Filtration applications
The two layered, needle-punched nonwoven filter medium that has just been endorsed with the ECO-CHECK label has impressive sustainability characteristics. Made entirely of polyester, more than half the fibers consist of recycled material.

Following their merger, Freudenberg Performance Materials, Low & Bonar, Mehler Texnologies® and Filc will be presenting their innovative solutions at a joint stand for the first time at this year’s techtextil exhibition in Frankfurt. The focus is on sustainability. Among the highlights are Evolon® RE, a microfilament textile for a wide variety of applications and markets, FILFLEX, a sustainable padding material for car seat covers, and the truck tarpaulin POLYMAR® 8556 ECO CF. Customers will find the world's leading manufacturer of technical textiles at Stand C51 in Hall 12.1.

Evolon® textiles made from recycled PET
With Evolon® RE, Freudenberg Performance Materials is presenting an even more sustainable version of its high-performance microfilament textiles. Evolon® RE is manufactured from an average of 70% recycled polyester, which the company makes by cycling post-consumer PET bottles in-house. Evolon® RE products are available for various applications such as technical packaging, in weights currently ranging from 80g/sqm to 300g/sqm. For high-tech wiping, lightweight Evolon® RE is now available starting from 30g/sqm. The material meets the needs of cleaning specialists for more sustainable wiping solutions. Evolon® RE offers the same high quality and material performance as all other Evolon® textiles.

Tarpaulins made from recycled raw materials presented by Mehler Texnologies®
When it comes to tarpaulins on trucks, both protection of the transport cargo and advertising for the transport company place high demands on the material. Mehler Texnologies® tarpaulin material ranks among the premium products for truck tarpaulins. The company is a pioneer in sustainable development and is showcasing POLYMAR® 8556 ECO CF. This unique material has a 25% share of recycled raw materials in the coating mass. In addition, the material is made with 100% R-PES yarns. The input materials undergo a complex separation and filtering process.

Sustainable padding material for automotive and furniture seat covers presented by FILC
FILFLEX is a soft and flexible padding layer made from nonwovens for automotive and furniture seat covers. It prevents leather from creasing and improves the dimensional stability of the seat covers. In terms of sustainability, its benefit is its 100% PET composition, making FILFLEX easy to recycle. FILFLEX offers customers easier handling during sewing and the seat covering process. End users benefit from the high seating comfort.

AMUT’s strategic partnership with EREMA contributes to accelerate the transition towards a greener world.  In summer 2021, EREMA in collaboration with AMUT  has finalized the installation and commissioning of ALTO packaging ́s first extrusion line for food grade PET sheets in New Zealand market. At the ALTO Plastic Packaging site, in Albany, the plant now processes 100 % washed post-
consumer flakes into 100 % food contact grade monolayer thermoforming sheet. In New Zealand, this milestone represents the first system to be installed for this special application.

The plastic packaging company ALTO, a division of PACT Group, invested for this new food grade PET sheet extrusion line as a part of Pact Group ́s vision to lead Circular Economy through Packaging in Australia and New Zealand.

Thanks to the direct combination of VACUREMA® PET recycling technology and the AMUT Inline Sheet production technology there is no longer any extra process stage. This is, because the melt goes straight from the VACUREMA® 1716 T Basic to the AMUT plant without the detour of pelletising. The post-consumer PET material is already decontaminated and pre-dried prior to extrusion in the vacuum reactor of the VACUREMA® Basic, with a throughput of up to 1,500 kg per hour. After high capacity filtration by EREMA SW-RTF backflush filter and online IV measurement, the melt goes directly into the AMUT Inline Sheet plant where it is processed into thermoforming sheet from 0.15 mm till 1.2 mm thickness. The monolayer thermoforming sheet produced from pure rPET is not only 100 % food contact compliant, it also fulfils the FDA and further regulations. At ALTO it is further processed into trays and food containers.

AMUT played its part by providing a full range of downstream equipment ranging from the Automatic Tdie, three rolls stack calender with automatic gap control and motorized cross axing unit, lamination unit for welding and barrier films, thickness control gauge to anti-static silicon coating unit, fully automatic two shafts turret winder and in line edge trims grinding and recycling.

The special features of this extrusion line come from the complete automatic and easy management of the line. This is due to the new Amut`s software including the Easy Start and Easy Change functions that will allow the operator to start the extrusion line and change product formats in automatic mode.

EREMA and AMUT are long-term partners in the Inline Sheet sector. EREMA ́s VACUREMA® technology is currently in use in more than 100 Inline Sheet facilities around the world, also for PACT Group companies in Australia. 

Rester Oy, which is developing the plant in Paimio, recycles companies' end-of-life textiles, and Lounais-Suomen Jätehuolto Oy (LSJH), which will hire a production area at the same facility, processes households' end-of-life textiles. The plant will process 12,000 tonnes of end-of-life textiles every year, which represents about 10% of Finland’s textile waste.

The textile industry’s end-of-life textile problem is intolerable. Natural resources are increasingly used to manufacture products, but these materials are lost at the end of their life cycle. About 100 million kilograms of textile waste are generated annually in Finland alone. Reusing this material could reduce the textile industry’s carbon footprint and significantly reduce the use of natural resources.

Rester Oy and LSJH will drive the textile sector towards a circular economy and begin processing textile waste as an industrial raw material. The Nordic countries’ first industrial end-of-textile refinement plant will open in Paimio in 2021. The 3,000-square-metre plant is being developed by Rester Oy, which recycles companies' end-of-life textiles and industrial waste materials. LSJH, which processes households’ end-of-life textiles on its production line, will hire part of the plant.

Outi Luukko, Rester Oy’s board chair, says, “The processing plant will begin a new era of textile circular economy in Finland. As industry pioneers, we are launching a system change in Scandinavia. The transition of the textile industry from a linear model to a circular economy is essential, as virgin materials cannot sustain the current structure of the textile industry. And why should it, when there is so much recyclable material available?”

From the perspective of Rester Oy’s main owner, work clothing supplier Touchpoint, the circular economy plant not only represents resource efficiency, but is also necessary from the perspective of the entire life cycle of a responsible work clothing collection.

Luukko adds, “Finding a local solution to a global problem is a huge leap in the right direction and raises Finland's profile as a pioneer of circular economy."

The future plant will be able to process 12,000 tonnes of end-of-life textiles annually, which represents about 10% of Finland’s textile waste. Both production lines produce recycled fibre, which can be used for various industrial applications, including yarn and fabric, insulating materials for construction and shipping industries, acoustic panels, composites, non-woven and filter materials, and other technical textiles, such as geo-textiles.

LSJH is piloting a full-scale refinement plant

LSJH has launched a pilot production line for processing households' end-of-life textiles. Unfortunately, consumers' end-of-life textiles are heterogeneous, making them a challenging raw material for further processing. Before processing, the textiles are sorted by material into various fibre classes using optical identification technology developed by LSJH and its partners. This ensures the quality of the raw material and the resulting fibre products.

Jukka Heikkilä, managing director for Lounais-Suomen Jätehuolto, explains: “On the basis of the experiences gathered from the pilot project, Lounais-Suomen Jätehuolto is preparing a full-scale refinement plant in the Turku region. As soon as 2023, the plant will process Finnish households' end-of-life textiles. The project involves all waste treatment plants owned by Finnish municipalities.”

Paimio has ambitious goals for circular economy companies

Rester’s initiative aims to create a circular economy cluster in Paimio that combines the processing and reuse of end-of-life textile fibres. Paimion Kehitys Oy, which is owned by the City of Paimio and the local association of enterprises, supports the development of circular economy companies in Paimio.

Mika Ingi, managing director for Paimion Kehitys Oy, says, “We want to step out of our traditional municipal role and create significant added value for everyone taking part. That is why we are involved in the development of a new modern service model based on ecosystem thinking. We are piloting the textile cluster, followed in the coming years by clusters focusing on plastic, construction, and energy. The aim of our service is to support and help develop new profitable business by bringing circular economy companies and their potential customers to innovate together."

The foundation stone of the processing plant was laid today (18 August 2020). The processing plant will begin operations in February 2021.