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24.07.2024

German Pavilion returning to Cinte Techtextil China

The German Pavilion is confirmed to return from 19 – 21 September at the Shanghai New International Expo Centre. For the first time since borders reopened, industry leaders gathering under the banner will bolster the fair’s innovation and sustainability with a comprehensive showcase, from raw materials to machinery, complemented by diversified fringe events across the fairground.

Located in a prime area of the International Hall, the German Pavilion is set to draw crowds with its reputable products and technology. Assembling under the pavilion this year will be some new and returning German exhibitors, having made their names in the sub-categories of automotive nonwovens, industrial-use monofilaments, weaving machinery, and many more. After confirming their participation, Hansa Industrie-Mixer, J.H. Ziegler Nonwovens and New Materials, Lindauer Dornier, Monosuisse, and Perlon will showcase their expertise together with other highlighted exhibitors, including:

The German Pavilion is confirmed to return from 19 – 21 September at the Shanghai New International Expo Centre. For the first time since borders reopened, industry leaders gathering under the banner will bolster the fair’s innovation and sustainability with a comprehensive showcase, from raw materials to machinery, complemented by diversified fringe events across the fairground.

Located in a prime area of the International Hall, the German Pavilion is set to draw crowds with its reputable products and technology. Assembling under the pavilion this year will be some new and returning German exhibitors, having made their names in the sub-categories of automotive nonwovens, industrial-use monofilaments, weaving machinery, and many more. After confirming their participation, Hansa Industrie-Mixer, J.H. Ziegler Nonwovens and New Materials, Lindauer Dornier, Monosuisse, and Perlon will showcase their expertise together with other highlighted exhibitors, including:

  • Autefa Solutions – A full-service provider for turnkey nonwoven lines and machines, the company offers machines for fibre opening and blending, carding, crosslapping, needle punching, spunlace, thermobonding, amongst others. At the fair, the company will showcase technology spanning 10 application areas.
  • Emtec Electronic – The company develops specialised test devices for the nonwoven and textile industries. An innovation said to quantify handfeel, its TSA Tactile Sensation Analyzer objectively measures the softness, smoothness and stiffness of textiles and nonwovens, as well as their recovery and elongation.
  • Neuenhauser Group – The Neuenhauser Textile division provides fully-automated cleaning systems, transport automation solutions, winding technology, high-performance can coilers and weaving machine accessories. With decades of experience, the Group will debut at the fair with various innovative Agrotech, Buildtech, and Geotech solutions.
  • Reifenhauser Enka Tecnica – A specialised provider of spinnerets and precision components to the man-made fibre industry. The company manufactures a broad spectrum of spinnerets and spin packs for all spinning processes, as well as premium jet strips for hydro-entangling with extra-long service life.
  • Reifenhauser Reicofil – A well-known provider of spunbond, meltblown and composite lines for nonwoven applications in the hygiene, medical, filtration and industrial sectors. Offering a wide range of machinery at the show, the company is developing technical solutions for sophisticated and sustainable applications, with a strong focus on machine intelligence and energy efficiency.

New fringe events to further advocate innovation and sustainability
At this year’s fair, AiDLab[1] will present its AI-based Textile Inspection System (AiTIS). A world first, AiTIS automatically and accurately detects material defects in nonwovens (especially for mask making), and various textiles, reflecting the collaborative efforts of AiDLab and a Hong Kong healthcare brand. At the event, Professor Calvin Wong, CEO & Centre Director of AiDLab, will introduce the system. This will be followed by a panel discussion and Q&A session with independent consultant Mr Eric Sham and moderated by AiDLab’s Mr Barry Tai, including insights on how advanced technology is reshaping the textile industry landscape.

Going beyond innovation, the fringe programme will also for the first time include Econogy Talks[2] and sustainability tours to reflect Messe Frankfurt’s commitment to a sustainable future. Fairgoers can also visit the Innovation Showcase Area for outstanding industry achievements, with the focus this year on cutting-edge technology, green development and high-end applications. Product submission is now open. Contact us to submit your products, or register here for your visitor badge.

The fair’s product categories cover 12 application areas, which span a full range of potential uses in modern technical textiles and nonwovens. These categories also cover the entire industry, from upstream technology and raw materials providers to finished fabrics, chemicals and other solutions. This scope of product groups and application areas ensures that the fair is an effective business platform for the entire industry.

Cinte Techtextil China will be held from 19 – 21 September 2024.

[1] The Laboratory for Artificial Intelligence in Design, jointly established by The Hong Kong Polytechnic University and the UK’s Royal College of Art, under HKSAR government funding
[2] ‘Texpertise Econogy’ – the umbrella for Messe Frankfurt’s sustainability activities at its more than 50 textile trade shows worldwide

Source:

Messe Frankfurt (HK) Ltd

KARL MAYER: Erfolgreicher Verkauf der Composite-Maschine MAX GLASS ECO (c) KARL MAYER GROUP
22.07.2024

KARL MAYER: Successful sale of MAX GLASS ECO composite machine

With the MAX GLASS ECO, the KARL MAYER Technical Textiles Business Unit offers a production machine for the economical manufacture of standard reinforcement textiles made from glass fibers, in particular non-crimp fabrics for the wind power industry. The newcomer can be adapted to the requirements of different application areas thanks to various optional functions and combines short amortization times. At a maximum speed of 1,800 min-1, it produces up to 410 m/h at a working width of 101". This performance is very well received on the composite market. Since the launch of the MAX GLASS ECO at JEC World in March this year, several purchase agreements have already been signed.

Some machines are going to India, and a larger number has been ordered by Chinese customers. Even the demonstration models in the KARL MAYER GROUP customer centers in Changzhou and Chemnitz have already been sold. However, the MAX GLASS ECO at KARL MAYER Technische Textilien in Saxony can still be used for processing trials and performance tests until September.

With the MAX GLASS ECO, the KARL MAYER Technical Textiles Business Unit offers a production machine for the economical manufacture of standard reinforcement textiles made from glass fibers, in particular non-crimp fabrics for the wind power industry. The newcomer can be adapted to the requirements of different application areas thanks to various optional functions and combines short amortization times. At a maximum speed of 1,800 min-1, it produces up to 410 m/h at a working width of 101". This performance is very well received on the composite market. Since the launch of the MAX GLASS ECO at JEC World in March this year, several purchase agreements have already been signed.

Some machines are going to India, and a larger number has been ordered by Chinese customers. Even the demonstration models in the KARL MAYER GROUP customer centers in Changzhou and Chemnitz have already been sold. However, the MAX GLASS ECO at KARL MAYER Technische Textilien in Saxony can still be used for processing trials and performance tests until September.

There is also great interest in Eastern Europe. At Techtextil 2024 in Frankfurt, for example, the new composite machine was a topic of numerous meetings with Ralf Schramm, Sales Manager at KARL MAYER Technische Textilien for this region. "I held many orientation discussions about the machine's performance. But there were also customers with specific purchase requests, including the Polish manufacturer of high-quality, professional solutions for the composites industry, Rymatex," says the sales professional.

Source:

KARL MAYER Verwaltungsgesellschaft AG

28.06.2024

VIATT 2025: Multifaceted fair poised to aid rejuvenation of Vietnam's textile industry

After navigating the challenges of 2023, Vietnam's textile and garment exports have been gradually recovering. Additionally, foreign direct investment (FDI) into Vietnam during the first five months of this year reached USD 11 billion, a 2% year-on-year increase, according to the Foreign Investment Agency under the Ministry of Planning and Investment (MPI). To cater to Vietnam’s renewed business opportunities, the Vietnam International Trade Fair for Apparel, Textiles and Textile Technologies (VIATT) will return from 26 – 28 February 2025 at the Saigon Exhibition and Convention Center (SECC).

After navigating the challenges of 2023, Vietnam's textile and garment exports have been gradually recovering. Additionally, foreign direct investment (FDI) into Vietnam during the first five months of this year reached USD 11 billion, a 2% year-on-year increase, according to the Foreign Investment Agency under the Ministry of Planning and Investment (MPI). To cater to Vietnam’s renewed business opportunities, the Vietnam International Trade Fair for Apparel, Textiles and Textile Technologies (VIATT) will return from 26 – 28 February 2025 at the Saigon Exhibition and Convention Center (SECC).

The fair’s inaugural edition attracted 409 exhibitors and 17,262 visits from 17 and 55 countries and regions respectively. Building on this solid foundation, VIATT 2025 will continue to showcase the latest industry trends, and expand its focus on various pertinent areas. This will include the fair’s new Econogy Hub, a dedicated zone to advance the topic of sustainability in the textile industry, and to relate it closely to the demands of economic and social change. Together with the evolving environmental landscape, the fair will also help industry players adapt to the rapid adoption of new technology in the business world with the debut of the Innovation & Digital Solutions Zone. This zone will allow exhibitors to unveil the latest technology and solutions such as AI design, digital manufacturing, big data analytics, and more.

Concurrently, VIATT 2025 will continue to present a diverse range of exhibitors across the apparel, home textile and technical textile sectors, with positive feedback received from many quarters at the fair’s inaugural edition.

Apparel Fabrics & Fashion
In the first four months of 2024, textile and garment exports grew 6.3% year-on-year to over USD 10 billion. The US remains Vietnam’s top export market, followed by the EU, South Korea, China, and Japan. To meet this demand, Vietnam's textile industry continues to import a significant amount of raw materials. At VIATT 2024, yarns, fibres and fabrics for casualwear, sportswear and uniforms, as well as garment accessories, were in high demand.

Home & Contract Textiles
Vietnam’s home textile market is projected to undergo a steady CAGR of 2.4% from 2024 – 2032, driven by the rising need for modern and stylish home textiles, e-commerce expansion, and favourable government initiatives. At the fair’s previous edition, product groups included bedding, loungewear and bathroom textiles, curtains and curtain fabrics, upholstery and sofa fabrics, and home textile accessories.

At VIATT 2025, exhibitors can additionally present their latest offerings in the Home Textiles Display Zone or at dedicated product presentations, to maximise their visibility to potential buyers.

Technical Textiles & Technologies
Across the textile industry, investors are now focusing on optimising production capacity, streamlining supply chains, and enhancing product quality to maintain competitiveness in both domestic and international markets. With the new Innovation & Digital Solutions Zone to supplement the textile technology category, VIATT 2025 is set to play host to providers of textile and nonwoven machinery, CAD/CAM, CMT, and technology for embroidery, knitting, sewing, printing, and more. Exhibitors can draw more attention to their latest solutions by participating in the fair's new innovation showcase area.

The Vietnam International Trade Fair for Apparel, Textiles and Textile Technologies (VIATT) is organised by Messe Frankfurt (HK) Ltd and the Vietnam Trade Promotion Agency (VIETRADE), covering the entire textile industry value chain. The second edition will be held from 26 – 28 February 2025.

More information:
VIATT Vietnam
Source:

Messe Frankfurt (HK) Ltd

KARL MAYER: New composite machine MAX GLASS ECO (c) KARL MAYER
24.06.2024

KARL MAYER: New composite machine MAX GLASS ECO

KARL MAYER Technische Textilien launches the new MAX GLASS ECO, a composite machine with a focus on standard non-crimp fabrics made of glass fibers.

The MAX GLASS ECO incorporates proven solutions from the KARL MAYER GROUP's range of multiaxial machines, including features from its predecessor, the MAXTRONIC®, and combines these with sophisticated new technical developments. The result is a production machine for the economical manufacture of standard glass fiber articles, especially non-crimp fabrics for the wind power industry.

The multiaxial warp knitting machine is extremely efficient, affordable and, unlike the previous MAXTRONIC®, sufficiently flexible thanks to various optional functions. At a rotational speed of up to 1,800 min-1, a maximum output of 410 m/h is achieved.

KARL MAYER Technische Textilien launches the new MAX GLASS ECO, a composite machine with a focus on standard non-crimp fabrics made of glass fibers.

The MAX GLASS ECO incorporates proven solutions from the KARL MAYER GROUP's range of multiaxial machines, including features from its predecessor, the MAXTRONIC®, and combines these with sophisticated new technical developments. The result is a production machine for the economical manufacture of standard glass fiber articles, especially non-crimp fabrics for the wind power industry.

The multiaxial warp knitting machine is extremely efficient, affordable and, unlike the previous MAXTRONIC®, sufficiently flexible thanks to various optional functions. At a rotational speed of up to 1,800 min-1, a maximum output of 410 m/h is achieved.

The MAX GLASS ECO is available with a working width of 101″ and is suitable for laying angles of +/-45°. A complementary layering system ensures a uniform take-up speed and therefore gentle processing of the fiber material. This sophisticated weft tension compensation device is one of a whole series of tried and tested features of KARL MAYER multiaxial technology that have been integrated into the new machine. Other adopted solutions include the Fiber Chopping Unit, which allows glass fiber chips to be introduced into the laying process and thus cover more fields of application, and a single pin transport chain for a processing method with less waste.

Newly developed innovations also ensure even better performance, including the fixed layer system, which ensures high placement precision at all laying angles. Other equipment details with added value for the customer include a conveyor belt across the full working width, the walking needle system, which prevents the formation of lanes even with long stitch lengths, and the fitting of single compound needles, which can be changed efficiently.

Source:

KARL MAYER Verwaltungsgesellschaft AG

The winning team Eleonora Boccherini, Ilaria Ioja, Giorgio Gacci and Marianna Butera of the Hackathon at PIN. Photo: PIN
The winning team Eleonora Boccherini, Ilaria Ioja, Giorgio Gacci and Marianna Butera of the Hackathon at PIN
18.06.2024

Schmitz Textiles: Hackathon with Italian students

As part of the European Erasmus+ project AddTex, the partner organisations organised several hackathons at the universities of Boras (Sweden), UPC (Spain), PIN (Italy) and TUS (Ireland) in May. The aim is to connect students with real challenges in the industry and promote innovation in the areas of ecology, sustainability, digitalisation and design. The participants had received basic information in advance through the 45 training videos and training sessions of the free and public Smart, Digital and Green Skills Academy at https://addtex.eu.

As part of the European Erasmus+ project AddTex, the partner organisations organised several hackathons at the universities of Boras (Sweden), UPC (Spain), PIN (Italy) and TUS (Ireland) in May. The aim is to connect students with real challenges in the industry and promote innovation in the areas of ecology, sustainability, digitalisation and design. The participants had received basic information in advance through the 45 training videos and training sessions of the free and public Smart, Digital and Green Skills Academy at https://addtex.eu.

The hackathon at the Italian university PIN (Polo Universitario Città di Prato) was organised and held together with the technical textiles department of the Industrieverband Veredlung - Garne - Gewebe - Technische Textilien e.V. (IVGT). Eight teams competed to develop innovative, sustainable ideas in just a few hours for the German family business Schmitz Textiles GmbH & Co. KG, Emsdetten. Schmitz Textiles, an expert in complete textile solutions for indoor and outdoor use for over 100 years, plans to offer exclusively sustainable products in the medium term and is looking for solutions to continuously increase the existing recycled share of yarns to 100 per cent.

Stefan Schmidt from IVGT presented the challenge via Teams Conference: "We are looking for a new business model for textile recycling at awning manufacturer Schmitz-Textiles in order to increase the existing proportion of recycled yarns and go beyond the exclusive use of recycled PET bottles. Schmitz Textiles has had an awning fabric made from 100% recycled polyester in its range since the end of 2023. The medium-term goal is to switch the entire range of awning fabrics to 100% recycled yarns. The company is looking for suitable solutions to achieve this.

In small teams, the 30 students specialising in eco-design, textiles/sales and textiles/technology developed proposals and presented them in five-minute online pitches. Ralf Bosse for Schmitz Textiles and Iris Schlomski for the IVGT acted as the jury and assessed the individual presentations in the categories of degree of innovation, presentation, industrial application potential and potential for commercial success. Each idea presented and each presentation scored more or less points in the individual categories. In the end, the points scored were added up to determine the winning team, which can further develop its idea together with the company. For Schmitz Textiles, these are Eleonora Boccherini, Ilaria Ioja, Giorgio Gacci and Marianna Butera.

Source:

IVGT

10.06.2024

Chargeurs PCC acquires strategic business units of Cilander

Chargeurs PCC Fashion Technologies has signed a binding agreement to acquire two strategic business units of the Swiss company Cilander, much renowned worldwide for its expertise in the supply of high-end textile fabrics and finishing services for complex textiles used in a wide range of applications.

The project includes the acquisition of the historic factory of the company, Geissbühler, located in Lützelflüh. The factory is a cornerstone of its finishing activities for high-tech textile solutions to address demanding markets such as the military, interior design, sports, and mobility. The site is the legacy of an industrial history that began in 1677, almost 350 years ago. With its Planofil® brand, Cilander markets high-performance textile fabrics for outdoor use, particularly in the nautical world. Cilander also offers a range of finishing options and can tailor-make products to customer specifications.

Chargeurs PCC Fashion Technologies has signed a binding agreement to acquire two strategic business units of the Swiss company Cilander, much renowned worldwide for its expertise in the supply of high-end textile fabrics and finishing services for complex textiles used in a wide range of applications.

The project includes the acquisition of the historic factory of the company, Geissbühler, located in Lützelflüh. The factory is a cornerstone of its finishing activities for high-tech textile solutions to address demanding markets such as the military, interior design, sports, and mobility. The site is the legacy of an industrial history that began in 1677, almost 350 years ago. With its Planofil® brand, Cilander markets high-performance textile fabrics for outdoor use, particularly in the nautical world. Cilander also offers a range of finishing options and can tailor-make products to customer specifications.

Under the agreement, CFT PCC also plans to acquire the shirt fabrics business, which mainly comprises the ALUMO brand, founded by Karl Albrecht, joined by Robert Morgen in 1941. For over a century, ALUMO has been at the forefront of offering fabrics made from the finest, highest-quality cotton for men's shirts. The company is the preferred supplier of tailors and specialized luxury brands worldwide, relying on its E-commerce platform.

In addition, Cilander's fabrics business includes the Eugster & Huber brand, aimed at women's fashion brands. The portfolio also comprises Brennet, known for its high-quality fabrics with a contemporary touch, and Swiss Ghutra, a brand specializing in high-end fabrics and headpieces for a clientele in the Middle East.

When completed, this acquisition will strengthen the development capabilities of Chargeurs PCC Fashion Technologies, a leader in interlinings for the garment industry. Thanks to Cilander’s high-tech products and solutions, the business line will open doors to new, particularly demanding niche markets, notably the military market and reinforce its market share in the apparel segment, especially shirt-making.

31.05.2024

Saralon and STFI: Stretchable silver inks for e-textiles

With the next generation of soft and stretchable electronics, reproducible and stretchable conductive inks are playing an increasingly important role in areas such as smart textiles, medical textiles or wearables. Saralon produces a range of stretchable conductive inks including Saral StretchSilver 500 for e-textile applications.

While electronic applications integrated into textiles gain popularity, printed stretchable conductive inks emerge as a transformative alternative for the complicated approach of weaving conductive yarns and fibres.

Just like choosing the right fabric and additives is vital for smart textile development, selecting the right conductive ink matters too. There are challenges to consider, such as conductivity, ink penetration into the fabric, changes in physical properties most importantly stretchability, printing process controllability, and reproducibility. That's why research and analysis are essential when deciding on the best conductive ink for a project.

With the next generation of soft and stretchable electronics, reproducible and stretchable conductive inks are playing an increasingly important role in areas such as smart textiles, medical textiles or wearables. Saralon produces a range of stretchable conductive inks including Saral StretchSilver 500 for e-textile applications.

While electronic applications integrated into textiles gain popularity, printed stretchable conductive inks emerge as a transformative alternative for the complicated approach of weaving conductive yarns and fibres.

Just like choosing the right fabric and additives is vital for smart textile development, selecting the right conductive ink matters too. There are challenges to consider, such as conductivity, ink penetration into the fabric, changes in physical properties most importantly stretchability, printing process controllability, and reproducibility. That's why research and analysis are essential when deciding on the best conductive ink for a project.

Together with the Saxon Textile Research Institute e.V. (STFI) Saralon conducted some performance tests benchmarking our Saral StretchSilver Ink against some competitor product.

Results:
Conductivity:

Saral StretchSilver 500 consistently demonstrated superior conductivity, regardless of line width.

Fluctuations at lower widths:
Both inks exhibited fluctuations at narrower printed lines, but the Alternative Ink displayed significantly higher variations.

Reproducibility Insights:
Saral StretchSilver 500 maintained stable resistance at 2mm and beyond, while the Alternative Ink noticeably struggled.

Elongation behaviour:
Saral StretchSilver 500 harmoniously coexists with the textile. Its application has minimal impact on the fabric's stretching properties, ensuring stability. The Alternative Ink, on the other hand, leads to significant changes in textile’s elongation properties. With this ink, stretching demands considerably higher forces.

29.05.2024

Teijin Frontier: Breathable, UV-blocking polyester material

Teijin Frontier Co., Ltd., the Teijin Group’s fibers and products converting company, announced the development of a new, multifunctional and comfortable polyester material that combines high breathability and UV protection. This new product reproduces the structure of a traditional Japanese "Sudare" blind (bamboo blind), which allows breezes to pass through while blocking out sunlight.

As extremely high summer temperatures become increasingly common, Teijin Frontier developed this new polyester to meet market demands for materials with enhanced heat protection functions. Heat protection encompasses breathability, UV resistance and anti-stickiness. However, until now, breathability – achieved by gaps between fibers – and UV protection were thought to be mutually exclusive.

To solve this dilemma, the company created a structure with slit-shaped, highly breathable areas in either the warp or weft direction of the fabric. These three-dimensional gaps, similar to those in a bamboo blind, allow the material to deliver both excellent breathability and high UV blocking performance of 85 percent or more. The structure allows air permeability of 50㎤/㎠・s or more.

Teijin Frontier Co., Ltd., the Teijin Group’s fibers and products converting company, announced the development of a new, multifunctional and comfortable polyester material that combines high breathability and UV protection. This new product reproduces the structure of a traditional Japanese "Sudare" blind (bamboo blind), which allows breezes to pass through while blocking out sunlight.

As extremely high summer temperatures become increasingly common, Teijin Frontier developed this new polyester to meet market demands for materials with enhanced heat protection functions. Heat protection encompasses breathability, UV resistance and anti-stickiness. However, until now, breathability – achieved by gaps between fibers – and UV protection were thought to be mutually exclusive.

To solve this dilemma, the company created a structure with slit-shaped, highly breathable areas in either the warp or weft direction of the fabric. These three-dimensional gaps, similar to those in a bamboo blind, allow the material to deliver both excellent breathability and high UV blocking performance of 85 percent or more. The structure allows air permeability of 50㎤/㎠・s or more.

This new product also offers sustainability benefits through the incorporation of recycled polyester in part. Its structure and elastic fibers provide stretch performance, while an uneven surface caused by differences in thread shrinkage and its structure avoid stickiness. Moreover, to achieve the combination of functions, Teijin Frontier also adopt special high-shrinkage technology and dying finishing technology. This material offers potential for use in both fashion and casual clothing.

Teijin Frontier will begin promoting this product for the 2025 spring and summer fashion and casual clothing collections in Japan, aiming for sales of 250,000 meters in fiscal 2024 and 750,000 meters in fiscal 2027.

Source:

Teijin Limited

29.05.2024

Cinte Techtextil China taking place in September 2024

With four months until the show opens doors, key exhibitors have already confirmed participation for the Cinte Techtextil China 2024. In conjunction with a positive global outlook, key players are eager to congregate again at the Shanghai New International Expo Centre from 19 – 21 September, to showcase innovations and connect with buyers from various sectors.
 
The fair will closely align with Messe Frankfurt’s ‘Texpertise Econogy’ – the umbrella for the group’s sustainability activities at its more than 50 textile trade shows worldwide. New energy elements, such as battery and hydrogen, will appear at the Innovation Showcase Area, on top of other interactive fringe events which centre around sustainability.

With four months until the show opens doors, key exhibitors have already confirmed participation for the Cinte Techtextil China 2024. In conjunction with a positive global outlook, key players are eager to congregate again at the Shanghai New International Expo Centre from 19 – 21 September, to showcase innovations and connect with buyers from various sectors.
 
The fair will closely align with Messe Frankfurt’s ‘Texpertise Econogy’ – the umbrella for the group’s sustainability activities at its more than 50 textile trade shows worldwide. New energy elements, such as battery and hydrogen, will appear at the Innovation Showcase Area, on top of other interactive fringe events which centre around sustainability.

With environmental protection as one of the top sourcing categories at the previous edition, products with medical, home, protection, and building applications rounded out the top five. By product group, in-demand sourcing categories included nonwovens; technology and accessories; woven fabrics, laid webs, knitted fabrics, braidings; composites; as well as coated textiles and bondtec. The show saw 15,542 visits from 52 countries and regions last year.

Catering to various key players in 2023, the well-known Groz-Beckert East Asia brought their latest innovative needling tools for the nonwovens sector. Speaking at the show, Mr Kabilen Sornum, Vice President Asia Pacific of Marketing & E-Commerce, commented: “While we are focusing on the China market, we have also seen buyers from the Middle East, Europe, Korea, and North Asia. Cinte Techtextil China is a more international fair – we can see that everyone is here, and the quality and innovation of buyers has improved greatly in the past three to four years. E-mobility and sustainability are two very clear trends.”
 
The fair’s product categories cover 12 application areas, which comprehensively span a full range of potential uses in modern technical textiles and nonwovens. These categories also cover the entire industry, from upstream technology and raw materials providers to finished fabrics, chemicals and other solutions. This scope of product groups and application areas ensures that the fair is an effective business platform for the entire industry.

Source:

Messe Frankfurt (HK) Ltd

Trevira CS fabrics and trimmings © Photo: Indorama Ventures
Trevira CS fabrics and trimmings
17.05.2024

Trevira CS at Clerkenwell Design Week in London

The Trevira CS brand is celebrating its debut at Clerkenwell Design Week (CDW), which takes place in London from May 21-23 2024. The brand is particularly targeting interior architects, interior designers, and contract furnishers to present its innovations on sustainability. Trevira CS stands for flame retardant fabrics that have been tested for fire safety. They also offer numerous sustainable properties.

The Trevira CS brand is celebrating its debut at Clerkenwell Design Week (CDW), which takes place in London from May 21-23 2024. The brand is particularly targeting interior architects, interior designers, and contract furnishers to present its innovations on sustainability. Trevira CS stands for flame retardant fabrics that have been tested for fire safety. They also offer numerous sustainable properties.

The London borough of Clerkenwell is home to more creative businesses and architects per square mile than anywhere else in the world, making it one of the most important design hubs in the world. To celebrate this rich and diverse community, Clerkenwell Design Week has created a unique opportunity to showcase the world's leading interior design brands. With more than 600 events in over 160 showrooms, more than 11 curated exhibitions, stunning installations, talks and a supporting program, CDW has established itself as the UK's leading design festival. The Trevira CS stand is part of the "German Collection - home to German Contemporary Design", which brings together a leading selection of renowned German brands.
 
The product range of flame-retardant Trevira® filament yarns now also includes 30 spun-dyed, UV-stable yarns, which are particularly suitable for outdoor use in fabrics in the hospitality sector and on cruise ships due to their high light fastness and UV resistance. They also score points for their sustainable properties, as the fabrics made from them can be produced in a more environmentally friendly way than textiles made from conventional yarns.

Trevira CS fabrics are also available in recycled versions. They consist of fiber and filament yarns that are obtained in various recycling processes. Fabrics made from these yarns can obtain the Trevira CS eco trademark. The prerequisite for this is a recycled content of at least 50%.

More information:
Outdoor Trevira CS flame retardant
Source:

Trevira CS is a brand of Indorama Ventures Fibers Germany GmbH

3D spacer fabric Photo: ARIS/DITF
3D spacer fabric
07.05.2024

Graywater treatment with 3D textiles

The demand for water in Germany is increasing and used water is not being utilized sufficiently. Graywater in particular, i.e. wastewater from showers, bathtubs and washbasins, offers great potential for further use. It can be brought to service water quality on site and reused for flushing toilets or watering gardens, for example. Thanks to flexible 3D textiles, it can even be used in almost any building to save space.

Around 50 to 80 percent of all domestic wastewater is graywater. Until now, large containers and tanks have been needed to reprocess it and return it to the cycle, taking up a lot of space in the building. The German Institutes of Textile and Fiber Research Denkendorf (DITF) and their project partner ARIS have developed a biological, textile-based system.

The demand for water in Germany is increasing and used water is not being utilized sufficiently. Graywater in particular, i.e. wastewater from showers, bathtubs and washbasins, offers great potential for further use. It can be brought to service water quality on site and reused for flushing toilets or watering gardens, for example. Thanks to flexible 3D textiles, it can even be used in almost any building to save space.

Around 50 to 80 percent of all domestic wastewater is graywater. Until now, large containers and tanks have been needed to reprocess it and return it to the cycle, taking up a lot of space in the building. The German Institutes of Textile and Fiber Research Denkendorf (DITF) and their project partner ARIS have developed a biological, textile-based system.

It is based on a 3D spacer fabric made of highly durable polypropylene. Its advantage is that it can be installed flat and is therefore extremely space-saving. Thanks to its special system geometry, it can be installed in places that would otherwise remain unused - for example in a new building under the floor of an underground garage, on a flat roof or in the garden. It can be modularly adapted to the water requirements and structural conditions in the respective buildings. "Even vertical solutions on facades are conceivable," explains DITF scientist Jamal Sarsour. This means that the graywater treatment system could be used in densely built-up cities in particular.

The system developed by the project partners requires little maintenance and is therefore particularly cost-effective. Compared to previous solutions, it is characterized by a long lifespan. It therefore contributes to sustainable water use and makes a valuable contribution to the circular economy.

ARIS plans to launch the new textile-based graywater treatment system on the market in 2024.

The project will be presented on June 13, 2024 at the SME Innovation Day of the Federal Ministry for Economic Affairs and Climate Protection in Berlin.

The research project with the number 16KN080829 of AiF Projekt GmbH, Berlin, was funded by the Federal Ministry of Economics and Climate Protection as part of the Central Innovation Program for SMEs (ZIM) on the basis of a resolution of the German Bundestag.

Source:

Deutsche Institute für Textil- und Faserforschung Denkendorf (DITF)

fisherman Alastair Newton, Pixabay
23.04.2024

Stahl: New waterproof performance coating

Stahl, a provider of speciality coatings and treatments for flexible substrates, has launched the protective coating Stahl Integra® Dry 725, meeting the increasing demand for water-repellant technical fabrics.  
 
Part of the Stahl Integra® toolbox, Stahl Integra® Dry 725 is a fluorine-free coating for water-repellent technical textiles that harnesses Stahl’s proven polymer technology. Stahl has introduced Stahl Integra® Dry 725 in response to the growing market demand for fluorine-free, water-repellent technical textiles, which is projected to reach USD 605.1 million by 2029.  

Stahl Integra® Dry 725 offers a balanced performance between repellency, durability and adhesion. Stahl's durable water-repellent (DWR) technology, StayDry, repels water from fabric by modifying the surface tension of fibres. The solution can be combined with other top or back coatings and is specifically designed for technical textile applications such as camping equipment or luggage. As a fluorine-free, waterborne coating that is cured at low temperatures, Stahl Integra® Dry 725 can help reduce environmental impact without compromising on quality.

Stahl, a provider of speciality coatings and treatments for flexible substrates, has launched the protective coating Stahl Integra® Dry 725, meeting the increasing demand for water-repellant technical fabrics.  
 
Part of the Stahl Integra® toolbox, Stahl Integra® Dry 725 is a fluorine-free coating for water-repellent technical textiles that harnesses Stahl’s proven polymer technology. Stahl has introduced Stahl Integra® Dry 725 in response to the growing market demand for fluorine-free, water-repellent technical textiles, which is projected to reach USD 605.1 million by 2029.  

Stahl Integra® Dry 725 offers a balanced performance between repellency, durability and adhesion. Stahl's durable water-repellent (DWR) technology, StayDry, repels water from fabric by modifying the surface tension of fibres. The solution can be combined with other top or back coatings and is specifically designed for technical textile applications such as camping equipment or luggage. As a fluorine-free, waterborne coating that is cured at low temperatures, Stahl Integra® Dry 725 can help reduce environmental impact without compromising on quality.

Stahl Integra® is a modular 'toolbox' of tailor-made, customer-orientated protective coating solutions that simultaneously ensure product quality and superior fabric integrity. This means that specific mechanical functionalities – from flame-retardant and breathable coatings to stay-clean technologies – can be introduced at different stages of the production process to meet specific end-market requirements as needed.

More information:
waterproof high-tech coatings
Source:

Stahl

Graniteville Specialty Fabrics installs Baldwin’s TexCoat™ G4 (c) Baldwin Technology Company Inc.
17.04.2024

Graniteville Specialty Fabrics installs Baldwin’s TexCoat™ G4

Graniteville Specialty Fabrics has set new standards by challenging the traditional pad finishing process. With Baldwin Technology’s spray finishing technology, Graniteville Specialty Fabrics has been able to increase production efficiency, and minimize chemical and water waste.
 
Based in Graniteville, South Carolina, Graniteville Specialty Fabrics produces coatings and coated fabrics that are resistant to water, fire, UV and weather for the military, marine and tent markets. The installation of Baldwin’s TexCoat™ G4 is part of a facility upgrade to maximize production efficiency and capacity in the durable water-repellent finishing and coating line to meet growing customer demand for advanced engineered products.

Graniteville Specialty Fabrics has set new standards by challenging the traditional pad finishing process. With Baldwin Technology’s spray finishing technology, Graniteville Specialty Fabrics has been able to increase production efficiency, and minimize chemical and water waste.
 
Based in Graniteville, South Carolina, Graniteville Specialty Fabrics produces coatings and coated fabrics that are resistant to water, fire, UV and weather for the military, marine and tent markets. The installation of Baldwin’s TexCoat™ G4 is part of a facility upgrade to maximize production efficiency and capacity in the durable water-repellent finishing and coating line to meet growing customer demand for advanced engineered products.

With sustainability benefits, tracking and process control, and Industry 4.0 integration, the TexCoat™ G4 provides high-quality fabric finishing, with no chemistry waste, as well as minimal water and energy consumption. This system utilizes non-contact precision-spray technology, ensuring precise finishing coverage with the exact amount of chemistry. Changeovers (pad bath emptying, cleaning and refilling) are reduced, resulting in substantial chemical conservation and increased productivity.

Cavitec: Technology for breathable laminates at Techtextil 2024 (c) Cavitec, Santex Rimar Group
03.04.2024

Cavitec: Technology for breathable laminates at Techtextil 2024

Cavitec, part of Santex Rimar Group, presents the redesigned Caviscreen at Techtextil Frankfurt. Caviscreen features latest technology for breathable laminates.

Caviscreen was developed as a hotmelt coating and laminating unit for breathable sportswear, rainwear and protective clothing – with and without applying a membrane. The redesigned machine shows a brand-new method to supply adhesive more evenly and precisely. Using PUR adhesive (polyurethane reactive adhesive) goes with additional benefits like strong bonding capabilities and versatility.

Caviscreen’s hotmelt screen printing is a special system for high-end application garments. With this Caviscreen system, a PUR adhesive is transferred onto the substrate through a rotary screen, similar to the well-established textile printing method. The adhesives are fed from the drum melter through a heated hose to the traversing adhesive distribution system inside the rotary screen, just behind the doctor blade.

Cavitec, part of Santex Rimar Group, presents the redesigned Caviscreen at Techtextil Frankfurt. Caviscreen features latest technology for breathable laminates.

Caviscreen was developed as a hotmelt coating and laminating unit for breathable sportswear, rainwear and protective clothing – with and without applying a membrane. The redesigned machine shows a brand-new method to supply adhesive more evenly and precisely. Using PUR adhesive (polyurethane reactive adhesive) goes with additional benefits like strong bonding capabilities and versatility.

Caviscreen’s hotmelt screen printing is a special system for high-end application garments. With this Caviscreen system, a PUR adhesive is transferred onto the substrate through a rotary screen, similar to the well-established textile printing method. The adhesives are fed from the drum melter through a heated hose to the traversing adhesive distribution system inside the rotary screen, just behind the doctor blade.

The adhesive is pressed by the doctor blade through the screen holes and transferred to the substrate. Different dot pattern (mesh or irregularly) and different screen thicknesses allow different coating weight and adhesive coverages.

The traversing adhesive dispenser is used to distribute the adhesive automatically over the set working width that – an additional technical benefit – can be set without any mechanical changes.

Cavitec’s screen coating system achieves high bonding strength while using less adhesive than other coating processes, because of applying the coating on the surface of the substrate and like this, the adhesive has less tendency to penetrate the substrate.

Bonding strength, softness of the fabric and the breathability are defined by the coating weight and the coverage. The rotary screen allows users to regulate and adapt the coverage respectively the coating weight. Cavitec offers a large selection of screens that are essential to fulfil the fabric requirements. A further advantage is the ease and efficiency of switching from one screen to another by simply unlocking the bayonet fitting. The IR-heater cover opens pneumatically and the lightweight screen can be easily removed by hand. Unlike with other methods, there's no need to deal with hot oil or any other heated liquid that requires cooling down.

The Caviscreen technology supports manufacturers by reducing costs with screens priced at a mere fraction, just 10%, of common gravure roller prices.

 

Source:

Aepli Communication GmbH

(c) TMAS
25.03.2024

TMAS: Microfactory for filter bags in Sweden

ACG Kinna Automatic and ACG Nyström – members of TMAS, the Swedish textile machinery association – have delivered the first microfactory for the production of fully finished filter bags to an international filtration industry customer, in cooperation with JUKI Central Europe.

The microfactory’s configuration is based on two separate interconnecting modules – the Smart Filter Line (SFL) and the Filtermaster 2.0. The SFL handles the fabric feeding from rolls and its folding prior to seam construction, which can either be by automatic sewing, welding or with sewing and taping, depending on specifications. Very rapid changeover of the modular seaming methods can be achieved during product changes. The specific size of the now fully-tubular fabric is then precisely cut to size for each individual unit and further folded ready to be fed into the Filtermaster 2.0. The Filtermaster 2.0 then automatically attaches the reinforcement, bottom and snap rings onto the filter tube with a second Juki sewing head on a robotic arm, to form the fully finished filter bag ready for packaging.

ACG Kinna Automatic and ACG Nyström – members of TMAS, the Swedish textile machinery association – have delivered the first microfactory for the production of fully finished filter bags to an international filtration industry customer, in cooperation with JUKI Central Europe.

The microfactory’s configuration is based on two separate interconnecting modules – the Smart Filter Line (SFL) and the Filtermaster 2.0. The SFL handles the fabric feeding from rolls and its folding prior to seam construction, which can either be by automatic sewing, welding or with sewing and taping, depending on specifications. Very rapid changeover of the modular seaming methods can be achieved during product changes. The specific size of the now fully-tubular fabric is then precisely cut to size for each individual unit and further folded ready to be fed into the Filtermaster 2.0. The Filtermaster 2.0 then automatically attaches the reinforcement, bottom and snap rings onto the filter tube with a second Juki sewing head on a robotic arm, to form the fully finished filter bag ready for packaging.

Filter bags are employed in a wide range of industrial processes and while they may be largely under the radar as products, they represent a pretty significant percentage of overall technical textiles production.
They are used in foundries, smelters, incinerators, asphalt plants and energy production plants. Other key manufacturing fields – often where dust is generated – include the production of timber, textiles, composites, waste handling and minerals, in addition to chemicals, food production, pharmaceuticals, electronics and agriculture.

As a further example of the scale of the industry and the high volumes of fabrics involved, one supplier has delivered a single order of 30,000 filter bags to be used for flue gas cleaning at a European power plant. The bags can also be anywhere up to twelve metres in length and frequently have to be replaced.

Source:

Textile Machinery Association of Sweden

Lenzing: Sustainable geotextiles as glacier protection and jacket (c) UN Nations
22.03.2024

Lenzing: Sustainable geotextiles as glacier protection and jacket

The Lenzing Group has created an innovative concept that contributes to the sustainable protection of our glaciers while inspiring collective action for sustainable practices and a circular economy in the nonwovens and textile value chain. The concept, which was artistically staged by the Italian artist Michelangelo Pistoletto, was presented on March 21, 2024, as part of the International Day of Forests celebrations at the Palais des Nations, the headquarters of the United Nations Office at Geneva (UNOG).

The melting of glaciers is being severely impacted by global warming. Geotextiles are used to protect ice and snow. However, the nonwovens used for this are made of fossil-based fibers, which allow microplastics1 to enter the valley via streams and may enter the food chain through small organisms and animals. Nonwovens made from cellulosic LENZING™ fibers, which are biodegradable at the end of their life cycle and can be completely recycled, are the sustainable solution to this problem.

The Lenzing Group has created an innovative concept that contributes to the sustainable protection of our glaciers while inspiring collective action for sustainable practices and a circular economy in the nonwovens and textile value chain. The concept, which was artistically staged by the Italian artist Michelangelo Pistoletto, was presented on March 21, 2024, as part of the International Day of Forests celebrations at the Palais des Nations, the headquarters of the United Nations Office at Geneva (UNOG).

The melting of glaciers is being severely impacted by global warming. Geotextiles are used to protect ice and snow. However, the nonwovens used for this are made of fossil-based fibers, which allow microplastics1 to enter the valley via streams and may enter the food chain through small organisms and animals. Nonwovens made from cellulosic LENZING™ fibers, which are biodegradable at the end of their life cycle and can be completely recycled, are the sustainable solution to this problem.

The covering of a small area with the new material made from LENZING™ fibers was tested for the first time during a field test on the Stubai Glacier. Four meters of ice were saved from melting. This was confirmed in a study conducted by the University of Innsbruck and the Austrian glacier lift operators on the Stubai Glacier in Tyrol (Austria). In 2023, the pilot project was successfully extended to all Austrian glaciers used by tourists.

Last year, the project was also awarded first place in the prestigious Swiss BIO TOP Awards for wood and material innovations.

Lenzing takes this innovation project as an opportunity to inspire collaborative action towards sustainable practices and circularity in the textile value chain. Together with a network of innovative partners, Lenzing is working on processing geotextiles into new textile fibers giving them a second life as a garment. The use of geotextiles is usually limited to two years, after which the nonwovens would be disposed of. In the first phase of the pilot project, the recycling of nonwovens made for geotextiles use has been successfully tested and a fashionable “Glacier Jacket” has been produced, showcasing that the recycling of geotextiles is viable. Next to Lenzing, the network includes Marchi & Fildi Spa, a specialist in the field of mechanical recycling, the denim fabric manufacturer Candiani Denim and the fashion studio Blue of a Kind.

KARL MAYER and Grabher: Competence platform for wearables (c) KARL MAYER GROUP
13.03.2024

KARL MAYER and Grabher: Competence platform for wearables

KARL MAYER has already produced a wide range of electrically conductive warp-knitted items for a wide variety of applications in the TEXTILE-CIRCUIT division of its TEXTILE MAKERSPACE, including a sensor shirt, a gesture control system and a conductive charging station. In order to drive the topic of wearables forward, the textile machine manufacturer has signed a cooperation agreement with the Grabher Group and delivered an MJ 52/1-S to the specialist for high-tech textiles in Lustenau. Managing Director Günter Grabher officially inaugurated the key machine for project work in the smart textiles sector in May 2023.

The machine is involved in various research projects, but is also available for new projects and tasks. The smart textiles competence team at KARL MAYER and Grabher is looking forward to supporting the ideas and work of interested parties also outside the research network with its know-how and the possibilities of the MJ 52/1-S.

KARL MAYER has already produced a wide range of electrically conductive warp-knitted items for a wide variety of applications in the TEXTILE-CIRCUIT division of its TEXTILE MAKERSPACE, including a sensor shirt, a gesture control system and a conductive charging station. In order to drive the topic of wearables forward, the textile machine manufacturer has signed a cooperation agreement with the Grabher Group and delivered an MJ 52/1-S to the specialist for high-tech textiles in Lustenau. Managing Director Günter Grabher officially inaugurated the key machine for project work in the smart textiles sector in May 2023.

The machine is involved in various research projects, but is also available for new projects and tasks. The smart textiles competence team at KARL MAYER and Grabher is looking forward to supporting the ideas and work of interested parties also outside the research network with its know-how and the possibilities of the MJ 52/1-S.

The MJ 52/1 S is also an extremely flexible project machine. The 138″ model in gauge E 28 produces a wide range of warp-knitted fabrics and incorporates conductive material directly into the textile surface - exactly where it is needed and with the structure that is required. The basis for the tailor-made fiber placement is KARL MAYER's string bar technology. The system for controlling the pattern guide bars ensures a fast, established textile production process and a high degree of pattern freedom.

Source:

KARL MAYER GROUP

Baldwin presents spray finishing system at Techtexil (c) Baldwin Technology Company Inc.
13.03.2024

Baldwin presents spray finishing system at Techtexil

Baldwin Technology Co. will join Elmatex GmbH at Techtexil (April 23-26 in Frankfurt, Germany) to demonstrate its TexCoat™ G4 precision spray finishing system.

Baldwin Technology Co. will join Elmatex GmbH at Techtexil (April 23-26 in Frankfurt, Germany) to demonstrate its TexCoat™ G4 precision spray finishing system.

With Baldwin’s system, the chemistry is precisely distributed across the textile surface and is applied only where it is required, on one or both sides of the fabric. The non-contact technology eliminates chemistry dilution in wet-on-wet processes, allowing full control of maintaining consistent chemistry coverage rates. Plus, pad bath contamination is eliminated, and changeovers are only required when there is a change of finish chemistry.
 
Furthermore, the system offers automated speed tracking, fabric-width compensation, and real-time monitoring to track system uptime, performance and chemistry usage, as well as active care alerts.
 
In addition, the TexCoat™ G4 system can process a wide range of low-viscosity water-based chemicals, such as durable water repellents, softeners, antimicrobials, flame retardants and more. Baldwin’s technology utilizes the same chemicals used in the traditional pad bath, and no special auxiliaries are required. The recipe is adjusted by increasing the concentration and reducing the pickup by a corresponding amount, so that the same level of solids is applied.
 
Some applications, such as durable water repellents, are only applied on the face of the fabric, instead of the traditional method of saturation through dipping and squeezing. Drier fabric entering the stenter means lower drying temperatures and faster process speeds. Single-side applications also open up the opportunity to process back-coated or laminated fabrics in a single pass of the stenter, instead of two passes.

KARL MAYER GROUP: Natural fibre composites and knit to shape products at JEC World 2024 (c) FUSE GmbH
26.02.2024

KARL MAYER GROUP: Natural fibre composites and knit to shape products at JEC World 2024

At this year's JEC World 2024 from 5 to 7 March, KARL MAYER GROUP will be exhibiting with KARL MAYER Technical Textiles and its STOLL Business

One focus of the exhibition will be non-crimp fabrics and tapes made from bio-based yarn materials for the reinforcement of composites.

"While our business with multiaxial and spreading technology for processing conventional technical fibres such as carbon or glass continues to do well, we are seeing increasing interest in the processing of natural fibres into composites. That's why we have a new product in our trade fair luggage for the upcoming JEC World: an alpine ski in which, among other things, hemp fibre fabrics have been used," reveals Hagen Lotzmann, Vice President Sales KARL MAYER Technische Textilien.

The winter sports equipment is the result of a subsidised project. The hemp tapes for this were supplied by FUSE GmbH and processed into non-crimp fabrics on the COP MAX 5 multiaxial warp knitting machine in the KARL MAYER Technical Textiles technical centre.

At this year's JEC World 2024 from 5 to 7 March, KARL MAYER GROUP will be exhibiting with KARL MAYER Technical Textiles and its STOLL Business

One focus of the exhibition will be non-crimp fabrics and tapes made from bio-based yarn materials for the reinforcement of composites.

"While our business with multiaxial and spreading technology for processing conventional technical fibres such as carbon or glass continues to do well, we are seeing increasing interest in the processing of natural fibres into composites. That's why we have a new product in our trade fair luggage for the upcoming JEC World: an alpine ski in which, among other things, hemp fibre fabrics have been used," reveals Hagen Lotzmann, Vice President Sales KARL MAYER Technische Textilien.

The winter sports equipment is the result of a subsidised project. The hemp tapes for this were supplied by FUSE GmbH and processed into non-crimp fabrics on the COP MAX 5 multiaxial warp knitting machine in the KARL MAYER Technical Textiles technical centre.

The STOLL Business Unit will be focussing on thermoplastic materials. Several knit to shape parts with a textile outer surface and a hardened inner surface will be on display. The double-face products can be made from different types of yarn and do not need to be back-moulded for use as side door panels or housing shells, for example. In addition, the ready-to-use design saves on waste and yarn material.

DITF: Biopolymers from bacteria protect technical textiles Photo: DITF
Charging a doctor blade with molten PHA using a hot-melt gun
23.02.2024

DITF: Biopolymers from bacteria protect technical textiles

Textiles for technical applications often derive their special function via the application of coatings. This way, textiles become, for example wind and water proof or more resistant to abrasion. Usually, petroleum-based substances such as polyacrylates or polyurethanes are used. However, these consume exhaustible resources and the materials can end up in the environment if handled improperly. Therefore, the German Institutes of Textile and Fiber Research Denkendorf (DITF) are researching materials from renewable sources that are recyclable and do not pollute the environment after use. Polymers that can be produced from bacteria are here of particular interest.

Textiles for technical applications often derive their special function via the application of coatings. This way, textiles become, for example wind and water proof or more resistant to abrasion. Usually, petroleum-based substances such as polyacrylates or polyurethanes are used. However, these consume exhaustible resources and the materials can end up in the environment if handled improperly. Therefore, the German Institutes of Textile and Fiber Research Denkendorf (DITF) are researching materials from renewable sources that are recyclable and do not pollute the environment after use. Polymers that can be produced from bacteria are here of particular interest.

These biopolymers have the advantage that they can be produced in anything from small laboratory reactors to large production plants. The most promising biopolymers include polysaccharides, polyamides from amino acids and polyesters such as polylactic acid or polyhydroxyalkanoates (PHAs), all of which are derived from renewable raw materials. PHAs is an umbrella term for a group of biotechnologically produced polyesters. The main difference between these polyesters is the number of carbon atoms in the repeat unit. To date, they have mainly been investigated for medical applications. As PHAs products are increasingly available on the market, coatings made from PHAs may also be increasingly used in technical applications in the future.

The bacteria from which the PHAs are obtained grow with the help of carbohydrates, fats and an increased CO2 concentration and light with suitable wavelength.

The properties of PHA can be adapted by varying the structure of the repeat unit. This makes polyhydroxyalkanoates a particularly interesting class of compounds for technical textile coatings, which has hardly been investigated to date. Due to their water-repellent properties, which stem from their molecular structure, and their stable structure, polyhydroxyalkanoates have great potential for the production of water-repellent, mechanically resilient textiles, such as those in demand in the automotive sector and for outdoor clothing.

The DITF have already carried out successful research work in this area. Coatings on cotton yarns and fabrics made of cotton, polyamide and polyester showed smooth and quite good adhesion. The PHA types for the coating were both procured on the open market and produced by the research partner Fraunhofer IGB. It was shown that the molten polymer can be applied to cotton yarns by extrusion through a coating nozzle. The molten polymer was successfully coated onto fabric using a doctor blade. The length of the molecular side chain of the PHA plays an important role in the properties of the coated textile. Although PHAs with medium-length side chains are better suited to achieving low stiffness and a good textile handle, their wash resistance is low. PHAs with short side chains are suitable for achieving high wash and abrasion resistance, but the textile handle is somewhat stiffer.

The team is currently investigating how the properties of PHAs can be changed in order to achieve the desired resistance and textile properties in equal measure. There are also plans to formulate aqueous formulations for yarn and textile finishing. This will allow much thinner coatings to be applied to textiles than is possible with molten PHAs.

Other DITF research teams are investigating whether PHAs are also suitable for the production of fibers and nonwovens.

Source:

Deutsche Institute für Textil- und Faserforschung (DITF)