EXTRUSION OF POLYURETHANE COMPOSITE MATERIALS
First Claim
1. A method of forming a polymeric composite material in an extruder, the method comprising:
- introducing at least one polyol, a di- or poly-isocyanate, and inorganic filler to a first conveying section of the extruder, the first conveying section comprising one or more transport screws;
transferring the at least one polyol, the di- or poly-isocyanate, and the inorganic filler to a first mixing section of an extruder;
mixing the at least one polyol, the di- or poly-isocyanate and the inorganic filler in the first mixing section to producing a composite material, the first mixing section comprising a reverse screw; and
transferring the composite mixture to an output end of the extruder.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods of extruding polyurethane composite materials are described. One method includes introducing at least one polyol and inorganic filler to a first conveying section of the extruder, transferring the at least one polyol and inorganic filler to a first mixing section of an extruder, mixing the at least one polyol and the inorganic filler in the first mixing section, transferring the mixed at least one polyol and inorganic filler to a second conveying section of the extruder, introducing a di- or poly-isocyanate to the second conveying section, transferring the mixed at least one polyol and inorganic filler and the di- or poly-isocyanate to a second mixing section, mixing the mixed at least one polyol and inorganic filler with the di- or poly-isocyanate in the second mixing section of the extruder to provide a composite mixture, and transferring the composite mixture to an output end of the extruder. Other related methods are also described.
132 Citations
6 Claims
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1. A method of forming a polymeric composite material in an extruder, the method comprising:
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introducing at least one polyol, a di- or poly-isocyanate, and inorganic filler to a first conveying section of the extruder, the first conveying section comprising one or more transport screws; transferring the at least one polyol, the di- or poly-isocyanate, and the inorganic filler to a first mixing section of an extruder; mixing the at least one polyol, the di- or poly-isocyanate and the inorganic filler in the first mixing section to producing a composite material, the first mixing section comprising a reverse screw; and transferring the composite mixture to an output end of the extruder. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification