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KARL MAYER offers new opportunities in knitting with 3D printing

KnittingKARL MAYER offers new opportunities in knitting with 3D printing

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KARL MAYER GROUP, one of the leading suppliers of solutions for warp knitting, warp preparation for weaving and technical textiles, has developed a technological solution that opens the door for new market opportunities. The innovation combines the warp knitting machine with the 3D printing system in a homogenous process according to the roll-to-roll principle. It results in maximum flexibility and efficiency in manufacturing customised products. The new 3D inline printer makes the most of its advantages, particularly when manufacturing prototypes and equipping of textile products with reinforced areas as well as design or function elements for additional benefits. In addition, the carbon footprint of newly developed products is fewer, since savings are made on material and energy-intensive working steps.

Michael Kieren from KARL MAYER’s New Business Development team noted that 3D printing allows them to completely rethink their whole approach to textile product design, saying: “The world of sportswear is already showing us what is possible. Mass-produced articles complete with 3D-printed branding and functional elements are already firmly established in this domain.”

KARL MAYER has already tested the new 3D printing table with its development partner, Bielefeld University of Applied Science, to produce shoe cloths. The prototype was presented at the Techtextil 2022 in Frankfurt am Main. The innovation was also a highlight at the 5th Additive Manufacturing Meeting, which was held in November 2022 on the KARL MAYER company premises.

KARL MAYER offers new opportunities in knitting with 3D printing

Textiles directly go to the printing table from the machine with KARL MAYER’s new solution

With the new 3D printing solution, the textile is printed directly after it has been manufactured on the warp knitting machine. This involves the machine directly communicating with the printer’s pattern system to enable targeted control. The inline printing head can be moved quickly to every necessary manufacturing position. It is mounted on an H-gantry and can be moved in all directions in space at a speed of 5 m/s. A camera system and a pattern recognition software ensure highest precision during positioning of the printing head on the 2×1 meter printing field.

The current printer version processes polyurethane and silicone without heat. The materials generally used in textile finishing are applied at a printing speed equivalent to a textile production of 85 m²/h with a warp knitting machine working width of 138″.

Particularly advantages for the sports, shoes and automotive sectors

The new 3D printing system from KARL MAYER combines the high productivity of warp knitting machines with the high flexibility of additive manufacturing, thus offering the opportunity to cut production steps. The complexity of the machine handling is also reduced through a simple pattern system. Thanks to these advantages, the innovation is particularly suitable for customising products. Through direct printing onto the fabric, large quantities of textile articles can be decorated with logos, brand designations or team names. Above all, the far greater flexibility in terms of design opens up completely new opportunities for successfully responding to increasing customer needs for individualisation.

The new 3D printing system also offers an efficient solution to the sports sector, where high demands are placed on product performance,  For instance, partial reinforcements such as kinesio tapes or support areas for muscles and for stabilising movement can easily be integrated in functional sport outfits. Shoes also benefit from the opportunity of being designed to be wear-resistant in areas which are under the most stress. Other opportunities are customised designs right through to 4D-printed shoes cloths, for instance through 3D-printed spacer textiles, and efficient production ‘on demand’.

The automotive sector, known for its high production efficiency, is likely to be particularly interested in KARL MAYER’s efficient 3D printing system because of the few working steps required, for example, to integrate reinforcements into door panels, roof liners and seats. Designs, team logos and company names can be applied easily and accurately for use in automotive interiors. Apart from these conventional uses, future-oriented implementations are also conceivable, such as the integration of switches in textile structures, the use of textiles for control purposes and protective covers for electronic components.

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