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Karl Mayer makes warp machine for lightweight composites
18
Oct '16
Karl Mayer Technische Textilien GmbH, German developers of specialised knitting equipments, has made a new multiaxial warp knitting machine, COP MAX5, and FSA 800 carbon fibre spreading machine to making load-adsorbing multiaxial textiles, for energy efficiency and environmental protection in lightweight composites for the construction sector.

Karl Mayer Technische Textilien developed the COP MAX5 to cater for the special demands of processing sensitive carbon fibres, and it can produce multiaxial textiles having very low weights per unit area. The COP MAX5 operates with parallel weft insertion and has three variably adjustable weft insertion systems as standard. By using modern materials and complex, sophisticated devices, the weft can be inserted gently and at a high frequency, and is fed to the knitting process either online or offline. The two versions basically differ in terms of the way the spreading process operates – a step in which the carbon fibre material is equalised and prepared so that it can absorb forces optimally during subsequent use.

With the online version, the carbon rovings are removed from bobbins on a tangential creel and spread directly during the weft insertion process. The material is, therefore, removed continuously and at a constant tension.

With the offline version, the pre-spread, dry, unidirectional (UD) tapes are removed from flanged bobbins and delivered to the weft insertion point. The UD tapes are produced in a preliminary stage on a fibre spreading machine, preferably the FSA 800. This machine was developed for spreading continuous filament yarns, and the assembly does not require any fixing means, such as an adhesive grid.

Whether the online or offline process is used, the carbon fibre material delivered is processed on the COP MAX5 at a constant tension and uniformity using intelligent technical systems. These well-thought-out features include an integrated, efficient layer support system, optimised feeding and laying principles based on a cut weft yarn, and specially designed hooking and transport elements. (GK)

Fibre2Fashion News Desk – India

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