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(c) Swiss Textile Machinery Swissmem
16.02.2024

Recycled fibres: Swiss manufacturers for circularity

Many end-users now expect recycled materials to be in textile products they purchase – and this is driving innovation throughout the industry. However, there are still many technical and economic issues facing yarn and fabric producers using recycled resources. Members of the Swiss Textile Machinery Association offer some effective solutions to these challenges.

Synthetic recycled materials such as PET can usually be treated similarly to new yarn, but there are additional complexities where natural fibres like wool and cotton are involved. Today, there’s a trend towards mechanically recycled wool and cotton fibres.

Many end-users now expect recycled materials to be in textile products they purchase – and this is driving innovation throughout the industry. However, there are still many technical and economic issues facing yarn and fabric producers using recycled resources. Members of the Swiss Textile Machinery Association offer some effective solutions to these challenges.

Synthetic recycled materials such as PET can usually be treated similarly to new yarn, but there are additional complexities where natural fibres like wool and cotton are involved. Today, there’s a trend towards mechanically recycled wool and cotton fibres.

Spinning recycled cotton
The use of mechanically recycled fibres in spinning brings specific quality considerations: they have higher levels of short fibres and neps – and may often be colored, particularly if post-consumer material is used. It’s also true that recycled yarns have limitations in terms of fineness. The Uster Statistics 2023 edition features an extended range of fibre data, supporting sustainability goals, including benchmarks for blends of virgin and recycled cotton.
In general, short fibres such as those in recycled material can easily be handled by rotor spinning machines. For ring spinning, the shorter the fibres, the more difficult it is to guide them through the drafting zone to integrate them into the yarn body. Still, for wider yarn counts and higher yarn quality, the focus is now shifting to ring spinning. The presence of short fibres is a challenge, but Rieter offers solutions to address this issue.

Knitting recycled wool
For recycling, wool fibres undergo mechanical procedures such as shredding, cutting, and re-spinning, influencing the quality and characteristics of the resulting yarn. These operations remove the natural scales and variations in fibre length of the wool, causing a decrease in the overall strength and durability of the recycled yarn. This makes the yarn more prone to breakage, especially under the tension exerted during knitting.

Adapting to process recycled materials often requires adjustments to existing machinery. Knitting machines must be equipped with positive yarn suppliers to control fibre tension. Steiger engages in continuous testing of new yarns on the market, to check their suitability for processing on knitting machines. For satisfactory quality, the challenges intensify, with natural yarns requiring careful consideration and adaptation in the knitting processes.

From fibres to nonwovens
Nonwovens technology was born partly from the idea of recycling to reduce manufacturing costs and to process textile waste and previously unusable materials into fabric structures. Nonwovens production lines, where fibre webs are bonded mechanically, thermally or chemically, can easily process almost all mechanically and chemically recycled fibres.

Autefa Solutions offers nonwovens lines from a single source, enabling products such as liners, wipes, wadding and insulation to be produced in a true closed loop. Fibres are often used up to four times for one product.

Recycling: total strategy
Great services, technology and machines from members of Swiss Textile Machinery support the efforts of the circular economy to process recycled fibres. The machines incorporate the know-how of several decades, with the innovative power and quality standards in production and materials.
Stäubli’s global ESG (environmental, social & governance) strategy defines KPIs in the context of energy consumption, machine longevity and the recycling capacity in production units worldwide, as well in terms of machinery recyclability. The machine recyclability of automatic drawing in machines, weaving systems and jacquard machines ranges from 96 to 99%.

Source:

Swiss Textile Machinery Swissmem

KARL MAYER STOLL: CREATE PLUS for production of Knitted traditional clothing (c) Astrifa
03.01.2024

KARL MAYER STOLL: CREATE PLUS for production of Knitted traditional clothing

  • Astrifa GmbH relies on CREATE PLUS for the production of its knitted traditional clothing

Astrifa GmbH was founded in 1948 in Lower Bavaria, moved to its current location in 1953 and began specializing in traditional costume clothing in 1978. The company has around 70 employees and produces around 700 items for men, women and children every week. The finest merino wool from England is processed and the machinery consists exclusively of STOLL machines, in total 17 flat knitting machines, including the latest representatives of the ADF and CMS series. Astrifa also relies on pioneering solutions when it comes to programming the machines: CREATE PLUS is used alongside other patterning systems.

  • Astrifa GmbH relies on CREATE PLUS for the production of its knitted traditional clothing

Astrifa GmbH was founded in 1948 in Lower Bavaria, moved to its current location in 1953 and began specializing in traditional costume clothing in 1978. The company has around 70 employees and produces around 700 items for men, women and children every week. The finest merino wool from England is processed and the machinery consists exclusively of STOLL machines, in total 17 flat knitting machines, including the latest representatives of the ADF and CMS series. Astrifa also relies on pioneering solutions when it comes to programming the machines: CREATE PLUS is used alongside other patterning systems.

The CREATE PLUS software combines a full-featured, advanced programming system with an easy-to-learn user interface, revolutionizing the programming of STOLL flat knitting machines. This has also aroused great interest at ITMA 2023. New versions are released every four months; in addition to many detailed improvements, the current release contains a greatly expanded system for multi-part knitting compared to the previous software and an extensive option for creating reports and statistics.

Source:

KARL MAYER Verwaltungsgesellschaft mbH

Gabriela Schelnner, Karl Mayer Group (c) Karl Mayer Group
Gabriela Schelnner, Karl Mayer Group
26.07.2023

Südwolle Group and KARL MAYER GROUP cooperate to unlock the potential of merino wool

The KARL MAYER GROUP and the Südwolle Group have joined forces in a project to explore the possibilities of merino wool for warp knitting technology. The project was triggered by the increasing demand for textiles made from sustainable and environmentally friendly materials. The cooperation was to develop innovative fabrics from renewable raw materials for use in underwear and functional sportswear. The focus of the work was on the use of wool as a material with excellent comfort properties and the look and feel of lightweight single jersey goods. The natural fiber fabric qualities are not typical for warp knitting processing, so the challenges during the project work were diverse.

The KARL MAYER GROUP and the Südwolle Group have joined forces in a project to explore the possibilities of merino wool for warp knitting technology. The project was triggered by the increasing demand for textiles made from sustainable and environmentally friendly materials. The cooperation was to develop innovative fabrics from renewable raw materials for use in underwear and functional sportswear. The focus of the work was on the use of wool as a material with excellent comfort properties and the look and feel of lightweight single jersey goods. The natural fiber fabric qualities are not typical for warp knitting processing, so the challenges during the project work were diverse.

Merino wool yarns with good running properties
Regarding the choice of material, the product development team of Südwolle Group recommended the Hidalgo yarn from their product portfolio. The yarn was created using the in-house developed Betaspun technology, in which a filament was twisted around a merino core. When natural fibres such as wool, cotton or silk are combined with sustainable fibres such as biodegradable polyamide as the filament, the spinning process can create durable, lightweight yarns that disintegrate completely without residue after use. The yarns made from the two components also have good running properties for use in warp knitting. "The polyamide content of the yarn increases its tenacity, reduces hairiness and makes it an excellent choice for warp knitting technology," confirmed Gabriela Schellner from KARL MAYER's Textile Product Development Department.

Shape stability paired with single jersey "look and feel"
The Hidalgo yarn, which is made from merino wool, was processed on a warp knitting machine using a carefully thought-out lapping selection to produce a light, soft fabric which, above all, retains its shape. The textile specialists at KARL MAYER had experimented with two different single bar fabric qualities beforehand and had thus adopted a new approach for jersey machines.

The first results are promising. Now more trials are needed to perfect the technique. Development partners are needed, including fabric producers, brands, and garment manufacturers, with whom the fabric qualities, machine equipment and orientation to the end applications can be refined. The KARL MAYER GROUP and the Südwolle Group are also unanimous in their desire to push the boundaries of what is possible with merino wool and knitting technology and to develop new solutions for the textile industry through further project work.

Source:

Karl Mayer Group

(c) Löffler
The EC300-S collarette cutter
10.02.2023

TMAS: Svegea installs Collarette Cutter at Löffler

Svegea of Sweden – a member of TMAS, the Swedish Textile Machinery Association – has recently installed an EC300-S collarette cutter for the high speed production of tubular apparel components as well as an FA350 automatic roll slitter at the plant of Löffler, in Ried im Innkreis, Austria.

The EC 300-S collarette cutter is equipped with the computer-controlled True-Drive II and high pre-feed device, which is used by garment manufacturers around the world for the production of tubular apparel components such as cuff and neck tapes and other seam reinforcements. It operates at speeds of up to 20,000 metres per hour. The integrated, fully automatic FA350 roll slitter FA500 roll slitter is equipped with three separately adjustable settings enabling three different band widths to be cut within the same cutting cycle. Automatic tube sewing units are provided for sewn tubes in optional rolled or flat folded forms, depending on customer preference.

Svegea of Sweden – a member of TMAS, the Swedish Textile Machinery Association – has recently installed an EC300-S collarette cutter for the high speed production of tubular apparel components as well as an FA350 automatic roll slitter at the plant of Löffler, in Ried im Innkreis, Austria.

The EC 300-S collarette cutter is equipped with the computer-controlled True-Drive II and high pre-feed device, which is used by garment manufacturers around the world for the production of tubular apparel components such as cuff and neck tapes and other seam reinforcements. It operates at speeds of up to 20,000 metres per hour. The integrated, fully automatic FA350 roll slitter FA500 roll slitter is equipped with three separately adjustable settings enabling three different band widths to be cut within the same cutting cycle. Automatic tube sewing units are provided for sewn tubes in optional rolled or flat folded forms, depending on customer preference.

Sports and knitwear specialist Löffler is celebrating its 50th anniversary in 2023. Its plant in Ried houses 25 circular knitting machines and three seamless knitting machines with an annual output of around 905,000 square metres of fabric, and in addition to product development, design, cutting and some sewing are all carried out in-house.

Löffler is known for its transtex under garments, which ushered in the two-layer principle of structures combining hydrophobic polypropylene and other fibres like cotton, Modal, Tencel or merino wool.

Before transtex, endurance athletes usually wore pure cotton underwear next to their skin, which became wet over time and cooled the body down. Löffler’s two-layer fabric prevented this, since the polypropylene does not absorb moisture and instead wicks it to the outside, where it can evaporate to keep the skin dry.

Innovation has been ongoing ever since, and in December, Löffler received an ISPO Award 2022 for transtex Retr’x – its latest functional underwear made from recycled polypropylene from textile waste and a combination of recycled and GOTS-certified organic cotton. Transtex Retr’x is neither dyed or bleached and is Standard 100 by Oeko-Tex as well as Made In Green by Oeko-Tex approved.

In addition to its own branded products, the plant makes sports garments for sister company Fischer, which is also based in Ried, and is at the same time involved in significant government tender projects, including the supply of polo shirts for the Austrian Red Cross and for the German and Austrian police forces. Combined, Löffler and Fischer employ approximately 700 people in the region of Upper Austria.

Source:

TMAS by AWOL Media

20.01.2023

Third edition of the project "CirculART"

Art meets sustainable fashion in the third edition of the project "CirculART", the initiative that sees companies, artists and fashion designers working together with Cittadellarte - Fondazione Pistoletto, showing how new balanced forms of production, design and sharing can be explored through a careful choice of materials and of sustainable supply chains. Three key concepts underpin the circularity of sustainable fashion and therefore this project: Reduce - reducing the consumption of raw materials, Reuse - reuse of raw materials, Recycling - regeneration.

The project CirculART is conceived and developed in collaboration between Fashion B.E.S.T. and UNIDEE Residency Programs, and led by the Foundation's team of curators.

Art meets sustainable fashion in the third edition of the project "CirculART", the initiative that sees companies, artists and fashion designers working together with Cittadellarte - Fondazione Pistoletto, showing how new balanced forms of production, design and sharing can be explored through a careful choice of materials and of sustainable supply chains. Three key concepts underpin the circularity of sustainable fashion and therefore this project: Reduce - reducing the consumption of raw materials, Reuse - reuse of raw materials, Recycling - regeneration.

The project CirculART is conceived and developed in collaboration between Fashion B.E.S.T. and UNIDEE Residency Programs, and led by the Foundation's team of curators.

Fashion B.E.S.T. - Better Ethical Sustainable Think-Tank, Cittadellarte - Fondazione Pistoletto’ sustainable fashion office, was created by artist Michelangelo Pistoletto and Franca Sozzani. Since 2009, B.E.S.T. has been working on the development of sustainability in the textile sector, to lead to a contamination between art, which assumes social responsibility, and the world of fashion, which is looking to define a new ethical and sustainable model.

CirculART proposes a new link between fashion and art, engaging both in a conscious and innovative combination of sustainability, sensitivity, beauty and union. The project links territory and production factories, bringing together actors from the different sectors making up the textile supply chain that work on the basis of a circular economy with companies that have chosen to embrace the ideal of sustainability and develop an innovative business model.

The protagonists of this year’s edition are two international artists and two international fashion designers, selected through an open call launched by Cittadellarte: Augustina Bottoni, Lucia Chain, Huge Sillytoe and Rebecca Sforzani, young talents called upon to create a work with fabrics produced by partner companies, focusing on dialogue and on the enhancement of the textile industry production chain.

In early 2023, the programme will give the four selected artists the opportunity to visit and work actively with the partner companies that have joined the initiative.
These are: Achille Pinto S.p.a, manufacturer of textiles and textile accessories for the main international fashion brands; Albini Group, Europe's largest manufacturer of cotton fabrics for shirts; Erica Industria Tessile, a leading company in the creation of textile prints, original and customised designs; Filatura Astro, eco-sustainable regenerated yarns; G2B S.r.l., a chemical and environmental analysis laboratory working with vertical cultivation from which indigo is obtained; Lampo by Ditta Giovanni Lanfranchi S.p.A., leader in the creation and production of zips for fashion; Lanificio Fratelli Cerruti, a Biella-based weaver for haute couture; Lenzing, world leader in the production of fabrics made from fibres derived from renewable wood raw material; Milior, a producer of high quality fabrics; Officina +39 – Chemistry plus creativity, a chemical company with thirty years' experience dedicated to research and chemical application in textiles; Tessuti di Sondrio, a factory inspired by the century-old local textile tradition of processing cotton, linen, hemp and wool; Tintoria Emiliana, garment-dyed production and sustainable practices; Zegna Baruffa Lane Borgosesia, a manufacturer of 100% Made in Italy fine combed and carded yarns.

 

Source:

Officina +39 / Menabò Group srl

Photo: Monforts
The new seven chamber Montex TwinAir stenter range with Montex®Coat coating at the plant.
26.10.2022

Dolinschek: Compression stockings in a variety of colours

The identification of profitable new niche markets has been central to the success and continuous expansion of Germany’s Dolinschek, a leading knitting, dyeing and finishing specialist, located in Burladingen in Baden-Württemberg.

“There is so much more to textiles than just clothing,” says Theo Dolinschek, who runs the company with his brother Erwin. “We handle many different technical materials such as automotive components, geotextiles and wallcoverings, but also those for more unusual applications such as inlays for extractor hoods, cut protection fabrics and even wool felts which are employed as insulation on wind turbines.

“We have also recently started to produce compression stockings in a variety of colours, because not everyone wants them black, beige or skin coloured. The most important product areas for us now are in sportswear, corsetry and lingerie, as well as orthopedic and medical products, workwear and protective clothing, but in addition, many other technical applications.”

The identification of profitable new niche markets has been central to the success and continuous expansion of Germany’s Dolinschek, a leading knitting, dyeing and finishing specialist, located in Burladingen in Baden-Württemberg.

“There is so much more to textiles than just clothing,” says Theo Dolinschek, who runs the company with his brother Erwin. “We handle many different technical materials such as automotive components, geotextiles and wallcoverings, but also those for more unusual applications such as inlays for extractor hoods, cut protection fabrics and even wool felts which are employed as insulation on wind turbines.

“We have also recently started to produce compression stockings in a variety of colours, because not everyone wants them black, beige or skin coloured. The most important product areas for us now are in sportswear, corsetry and lingerie, as well as orthopedic and medical products, workwear and protective clothing, but in addition, many other technical applications.”

The Dolinschek brothers moved their business to the historic site of the former Ambrosius Heim textile company in Burladingen in 2001 in order to expand. At the time, the company – founded by their father in 1980 as a textile wholesaler before moving into dyeing – employed just 13 people. Within a year, the company had bought additional space at the site.

Now, with Theo in charge of technology and sales, and Erwin responsible for production, the company employs almost 100 people and operates on an integrated site of 35,000 square metres.

In 2005, a laminating department was established by the company and since 2012 investment in knitting machines has been ongoing.

“The further we went into vertical integration, the more of our own products we were able to position on the market and so we were also able to make ourselves more independent,” says Theo. “We have continued to develop and today we can produce high-quality fabrics for many fields, with 42 knitting machines, 36 dyeing machines, three stenter frames and many other production and processing machines.”

Dolinschek has also developed its own proprietary TMG dyeing machines which have subsequently been successfully sold to many other companies all over the world. There are currently 11 of these machines  in operation at the Burladingen site and around 45 installed at other companies.

For finishing technology, however, the company relies on Monforts, and has installed a new seven chamber Montex TwinAir stenter range with a Montex®Coat coating unit in knife execution, enabling the coating of dimensionally stable knitted fabrics with polyurethane or acrylate. Another unique feature is the Teflon-coated (non-stick) transportation belt through the system.

The Montex line is also equipped with integrated heat recovery and exhaust gas purification to ensure the most resource-efficient processing available on the market. The exhaust air goes from the Monforts heat recovery system into an existing air/water heat recovery system and then into an electrostatic precipitator.

Highly-intuitive Monforts Qualitex visualisation software allows all machine functions and process parameters to be assessed and controlled easily.

 

More information:
Dolinschek Monforts
Source:

AWOL Media

14.10.2021

Monforts: Automated finishing at Knopf’s Sohn

Knopf’s Sohn, a contract finisher of technical textiles, has installed a fully automated Montex stenter at its plant in Helmbrechts, Germany.
Knopf’s Sohn is processing technical textiles for the automotive, aerospace, home furnishings and workwear markets, based on wool, cellulose, polyamide and polyester fabrics, along with elastane blends, in weights of 80-800gsm.

The Montex machinery range is constantly being upgraded to meet evolving customer needs for greater automation, ease of operation and energy optimisation. The latest ten chamber line at Knopf’s Sohn, with a working width of up to 2.0 metres, was engineered to specific requirements in order to accelerate the company’s move to fully automatic control of its production, and high scaffolding was required for its installation.

The line benefits from two integrated ECO Booster modules to provide high energy savings. These compact, air-to-air heat exchangers, installed within the roof structure of the line, exploit energy from the exhaust gas to preheat up to 60% of the incoming fresh air entering the stenter.

Knopf’s Sohn, a contract finisher of technical textiles, has installed a fully automated Montex stenter at its plant in Helmbrechts, Germany.
Knopf’s Sohn is processing technical textiles for the automotive, aerospace, home furnishings and workwear markets, based on wool, cellulose, polyamide and polyester fabrics, along with elastane blends, in weights of 80-800gsm.

The Montex machinery range is constantly being upgraded to meet evolving customer needs for greater automation, ease of operation and energy optimisation. The latest ten chamber line at Knopf’s Sohn, with a working width of up to 2.0 metres, was engineered to specific requirements in order to accelerate the company’s move to fully automatic control of its production, and high scaffolding was required for its installation.

The line benefits from two integrated ECO Booster modules to provide high energy savings. These compact, air-to-air heat exchangers, installed within the roof structure of the line, exploit energy from the exhaust gas to preheat up to 60% of the incoming fresh air entering the stenter.

The use of a single ECO Booster unit has been calculated to save up to 35% in energy costs, based on fixation processes. Fully automatic operation, set at the Monforts Qualitex control unit, ensures there is no additional burden on the machine operator.

The line is powered by Exxotherm indirect heating, which practically eliminates the yellowing which can be experienced during the treatment of certain polyamide and elastane-based fabrics, and is also equipped with a Conticlean circulating air filter system for constant high drying capacity.

Software
The latest Qualitex visualisation software offers operators reliability and easy control with its full HD multi-touch monitor and slider function, dashboard function with individual adaptation to operating states and faster access to comprehensive recipe data management.

With the Monformatic control system, the exact maintenance of the dwell time in combined treatment processes (drying and heat-setting) can be monitored. When the heat-setting point is reached, the fan speed is automatically adjusted, keeping energy consumption fully under control.

Source:

A. Monforts Textilmaschinen GmbH & Co. KG / AWOL Media