Mineral-filled resin products

Details Mineral-filled resin products Mineral-filled resin products

B - Operations, Transporting

29

C

B29C 67/24 (2006.01) B29C 43/02 (2006.01) B29C 47/00 (2006.01) B29C 59/02 (2006.01) C04B 14/10 (2006.01) C04B 26/10 (2006.01) C04B 26/18 (2006.01) B29C 43/00 (2006.01)

Patent

CA 2046305

2046305 9008643 PCTABS00001 A powdered mineral material is thoroughly mixed with a minor proportion of a thermosetting resin material followed by mixing the resulting dough with glass fibre reinforcement. A batch of the resulting formulation is extruded through a rectangular section die to form an extrudate of predetermined length. Several of these lengths are simultaneously pressed in a stack, one above the other, each extrudate between a pair of planar plates, one of which is a cast metal body which has been cast in material bearing an impression of the textured finished building product. The plates are thermostatically heated, at a temperature such that the extruded formulation can be thermally deformed and cured. The resulting mineral-filled resin product is typically a roofing panel.

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