B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1016
B29C 70/50 (2006.01)
Patent
CA 1202461
COMPACTED SHEET MOLDING COMPOUND Abstract of the Disclosure A method is provided for compacting viscous polymeric molding compositions preparatory to com- pression molding to substantially improve the physical properties of articles molded therefrom. Suitable compositions include those filled with a geometric reinforcing particulate filler that are flowable and thermosettable when compression molded. The method comprises forming a slab of a said filler composition and thereafter reducing its thickness by passing it between spaced-apart pairs of compression means. The pair members of the means are spaced apart to ultimately substantially reduce its thickness. The method yields unexpected improvements in the tensile strength, isotropy and surface characteristics of articles compression molded from the compounds.
425763
Hagerman Edward M.
Mitchell Harry A.
General Motors Corporation
Gowling Lafleur Henderson Llp
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