From the Sector

At the upcoming Techtextil show for technical textiles, which will take place in Frankfurt from April 23-25, Monforts will launch its new coaTTex coating unit dedicated to air knife and knife-over-roller coating.

For single-sided application with paste or foam, the versatile coaTTex is suitable for both incorporation into existing finishing ranges as well as installation with new Monforts lines, notably the Montex stenter systems.

A wide range of coatings can be applied to fabrics for providing functions such as waterproofing, liquid and gas protection and breathability, in addition to foam lamination and coating, including black-out coating.

The considerable technical textile end-use applications envisaged for the coaTTex range from window blinds to abrasive cloths and from airbags to sails.

With an operational speed of up to 40 metres per minute, coaTTex units are available in nominal widths of between 1800mm to 3600mm and their robust construction is characterised by a rotating beam for the fixation of up to three different knife executions.

Central adjustment of both the horizontal and vertical position of the beam, and also of the knife angle, enables easy adaptation to new projects and automatic tension control guarantees high quality production. In addition, the cleaning blade for the coating roller is pneumatically controlled, as is the lifting of the beam at seams and clamping during fabric standstill.

• Collaboration between Indorama Ventures and Toyobo to meet growing global demand for airbags
• Newly completed plant in Thailand will supply high-performance nylon yarn to customers in the automotive safety sector

Indorama Ventures Public Company Limited (IVL) celebrated the completion of a plant to manufacture high-performance nylon yarn for automobile airbags. The new plant in Rayong, Thailand, was constructed by Toyobo Indorama Advanced Fibers Co., Ltd. (TIAF), a joint venture that Indorama Ventures established with Toyobo Co., Ltd in November 2020.

The plant, which has been built on the site of Indorama Polyester Industries PCL (IPI) in Rayong Province, will deliver 11,000 tons of high-performance yarn per year to meet global demand for airbags that is expected to grow by 3 percent to 4 percent annually as automakers equip vehicles with more airbags and emerging economies require cars to adopt more safety features. Test production is scheduled to start in October 2022 with the goal of starting commercial production in the middle of 2023.

In 2014, Indorama Ventures and Toyobo jointly acquired Germany’s PHP Fibers GmbH, a leading airbag yarn maker. Since then, both companies have strengthened their relationship with a focus to expand in the automotive safety sector. Mr Christopher Kenneally, based in Bangkok, leads IVL’s Fibers segment, which produces fibers and yarns across its Hygiene, Mobility and Lifestyle verticals. Mr Ashok Arora, with over 30 years of experience in fibers and polymer operations, will helm TIAF as CEO while maintaining his role as CTO with IVL Fibers.

• Swiss weaving machinery manufacturers are in the forefront of novel application development

Shoes and electronic calculators are probably not the first products people would associate with the textile weaving process. But they certainly signpost the future for woven fabrics, as two examples of the ever-wider possibilities of latest technology in the field. Fashion and function already combine in the increasing popularity of woven fabrics for shoes, and this is a present and future trend. Calculators in fabrics? That’s another story of ingenious development, using so-called ‘meander fields’ on the back and keys printed on the front of the material.

These glimpses of the outlook for modern weavers are among the highlights of developments now being pioneered by Swiss textile machinery companies. All weaving markets require innovation, as well as speed, efficiency, quality and sustainability. Member firms of the Swiss Textile Machinery Association respond to these needs at every point in the process – from tightening the first thread in the warp to winding the last inch for fabric delivery. They also share a common advantage, with a leading position in the traditional weaving industry as well as the expertise to foster new and exciting applications.

Technology and research cooperation
The concept of a ‘textile calculator’ was developed by Jakob Müller Group, in cooperation with the textile research institute Thuringen-Vogtland. Müller’s patented MDW® multi-directional weaving technology is able to create the meander fields which allow calculator functions to be accessed at a touch. A novel and useful facility, which suggests limitless expansion.

Today, the latest woven shoes are appreciated for their precise and comfortable fit. They score through their durability, strength and stability, meeting the requirements of individual athletes across many sports, as well as leisurewear. Stäubli is well known as a leading global specialist in weaving preparation, shedding systems and high-speed textile machinery. Its jacquard machines offer great flexibility across a wide range of formats, weaving all types of technical textiles, lightweight reinforcement fabrics – and shoes.

It’s possible to weave new materials such as ceramics, mix fibers such as aramid, carbon and other, and produce innovative multi-layers with variable thicknesses. Such applications put special demands on weaving machines which are fulfilled by Stäubli high-performance TF weaving systems.

Great weaving results are impossible without perfect warp tension, now available thanks to the world-leading electronic warp feeding systems of Crealet. Some market segments in weaving industry today demand warp let-off systems which meet individual customer requirements. For example, the company has recognized expertise to understand that geotextile products often need special treatment, as provided by its intelligent warp tension control system. Individual and connective solutions are designed to allow external support via remote link. Crealet’s warp let-off systems are widely used in both ribbon and broadloom weaving, for technical textiles applied on single or multiple warp beams and creels.

Functional, sustainable, automated
Trends in the field of woven narrow fabrics are clearly focused on functionality and sustainability. The Jakob Müller Group has already embraced these principles – for example using natural fibers for 100% recyclable labels with a soft-feel selvedge. It also focuses as much as possible on the processing of recycled, synthetic materials. Both PET bottles and polyester waste from production are recycled and processed into elastic and rigid tapes for the apparel industry.

For efficient fabric production environments, it is now recognized that automated quality solutions are essential. Quality standards are increasing everywhere and zero-defect levels are mandatory for sensitive applications such as airbags and protective apparel.

Uster’s latest generation of on-loom monitoring and inspection systems offers real operational improvements for weavers. The fabric quality monitoring prevents waste, while the quality assurance system significantly improves first-quality yield for all applications. Protecting fabric makers from costly claims and damaged reputations, automated fabric inspection also removes the need for slow, costly and unreliable manual inspection, freeing operators to focus on higher-skilled jobs.

Smart and collaborative robotics (cobots) offer many automation possibilities in weaving rooms. Stäubli’s future oriented robotics division is a driver in this segment with first effective installations in warp and creel preparation.

Control and productivity
Willy Grob’s specialized solutions for woven fabric winding focus on reliable control of tension, keeping it constant from the start of the process right through to the full cloth roll. Continuous digital control is especially important for sensitive fabrics, while performance and productivity are also critical advantages. In this regard, the company’s large-scale batching units can provide ten times the winding capacity of a regular winder integrated in the weaving machine.

The customized concept by Grob as well as design and implementation result in great flexibility and functionality of the fabric winding equipment – yet another example of Swiss ingenuity in textile machinery.  
There is even more innovation to come in weaving – and in other segments – from members of the Swiss Textile Machinery Association in future! This confident assertion is founded on an impressive statistic: the 4077 years of experience behind the creative power of the association’s member firms. It’s proof positive that their developments grow out of profound knowledge and continuous research.