Method and apparatus for molding thermosetting resins

Details Method and apparatus for molding thermosetting resins Method and apparatus for molding thermosetting resins

B - Operations, Transporting

29

C

18/750

B29C 47/88 (2006.01) B29C 47/00 (2006.01) B29C 47/24 (2006.01) B29C 47/60 (2006.01)

Patent

CA 1229966

ABSTRACT OF THE DISCLOSURE A method is disclosed for forming a thermosetting resin pipe having a balanced compressive strength between the axial direction and the direction normal to the pipe axis. The method includes the steps of molding and thermo- setting a thermosetting resin in a smooth zone in the front section of an extrusion screw provided in the cylinder of an extrusion molding machine. Thermosetting is effected to such an extent that the resin after being extruded from the cylinder is capable of retaining its own shape. The resin, optionally containing a fibrous filler, is randomly oriented. An apparatus for producing such a thermosetting resin, and a thermosetting resin having a balanced compressive strength are also disclosed.

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