Patent ID: 6776596
Filing Date: 2004-08-17
Classification: B29B,B29C,B29K,Y02W

Abstract:
An apparatus for the production of fiber-reinforced plastic compositions from fiber material and melted plastic, comprising:a parallel, double screw, plasticizing extruder, including a housing with two bores and two extruder screws driven in rotation, one of the bores being a cylinder bore having a diameter and one of the extruder screws being a feed screw, an impregnation section, including a slot-like feed opening provided in the housing above the feed screw for the introduction of fiber material into at least one of the bores and for mixing, wherein beginning at the feed opening the cylinder bore has a Â¼ to Â¾ wrap-around enlarged by 2 to 20 mm, after which the cylinder bore is reduced to the screw diameter, and a stripper bar disposed at the end of the wrap-around; and a plastic melting extruder adapted to heat the fiber material in a transport line to the plasticizing extruder.