Breaking News

Polymer Melt Evacuation Technology

November 30, -0001

Gneuss Kunststofftechnik GmbH has introduced its latest development—a patented evacuation technology for polymer melts. This system represents a significant step with regard to vacuum degassing. The special Multi Rotation System (MRS) allows an increase of the surface in contact with the polymer melt by a factor of approximately 25 compared with conventional twin screw processes. The polymer melt is delivered into a large single screw drum. The drum contains 8 or 10 (depending on the model size) small extruder barrels, parallel to the main screw axis. Installed in these small extruder barrels are the “satellite” screws, which are driven by a ring gear in the main barrel. The satellite screws rotate in the opposite direction to the main screw while they are being rotated around the screw axis.     
This increases the surface exchange of the polymer melt, which is of significant importance when applying a vacuum. The extruder barrels, which are cut into the drum of the multi rotation system, are approximately 30% open to ensure the optimum melt transfer into the barrels and so that the evacuation can take place without restrictions. Further, precise control of the melt temperature is possible as the temperatures of all the surfaces in contact with the melt can be controlled accurately.

  • Meltblown Nonwovens Report

    Meltblown Nonwovens Report

    Karen McIntyre, editor||November 11, 2015
    Often overshadowed by its older brother, spunbond, meltblown nonwovens continue to expand in a number of areas.

  • Filtration  Market Update

    Filtration Market Update

    Karen McIntyre||November 11, 2015
    Growth continues to be robust across all categories as new products and investments boost innovation.

  • The Feminine Hygiene Market

    The Feminine Hygiene Market

    Tara Olivo, associate editor||November 11, 2015
    Manufacturers of femcare products are overcoming growth challenges with marketing, education and new technologies.