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Karl Mayer Malimo Introduces Malitronic® Multiaxial Machine

Karl Mayer Malimo Textilmaschinenfabrik GmbH, the technical textiles strategic unit of Germany-based Karl Mayer Textilmaschinenfabrik GmbH, has introduced the Malitronic® Multiaxial machine for layer stabilization in reinforcing textiles, which can be used for prepreg applications in wind turbines, aircraft, and marine craft; and for building repairs.

One unit is available for customer trials and training purposes at Karl Mayer Malimo's technical center in Chemnitz, Germany. A second machine already is in place performing trials for a multiaxial textile producer.

Mayer reports the machine offers improved efficiency and performance, and productivity has increased 20 to 25 percent over the previous-generation model.

The machine features a modular design for optimal flexibility, with the combination of both mechanical and electronic aspects of the individual components possible. Individual modules are constructed at the Chemnitz plant and then assembled at the customer's facility.

Material is fed to the machine using a full-width, continuous conveyor belt assuring uniform and specific feeding of materials, such as chopped glass mats or pretensioned weft layers, to the bonding section of the machine.

An optional wide cutting unit is available for producing chopped glass mats from glass rovings to be used as feedstock. The delivery system to the machine can vary depending on the customer's requirements.

The Malitronic features a compensating yarn tensioner, which provides constant take-off of the yarn from the package and evens out any differences in yarn tension as the yarns are laid on the conveyor belt.

Sheet-wise positioning of the reinforcing yarns is controlled by the weft laying system, which features an optimized drive system. Adjustments can be made in 1-degree increments between 45-degree and -45-degree angles. The standard Malitronic configuration has three individually controlled weft laying devices, but the machine can be configured with up to five.

The reinforcing yarns are moved to the bonding point using transport chains located on the lengthwise sides of the weft insertion frame. Weft yarns are held in place by horizontally and vertically positioned needled pins.

Stitches are formed to bond the reinforcing material. Filler thread delivery has been simplified and optimized to offer constant thread tension.

Once the material has been bonded, selvages are removed and collected in a central waste bin. Cutting tools can be set up to cut the working width of the material into strips as determined by the end-use for the product.

Standard two- and three-roller take-down units are used, and the surface winder operates semi-automatically. The customer can elect to use a combined surface and central winder in cases such as when sensitive materials or long lengths will be wound.

October 27, 2009

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