Gating for production of rigid polyurethane foam

Details Gating for production of rigid polyurethane foam Gating for production of rigid polyurethane foam

B - Operations, Transporting

29

C

B29C 44/42 (2006.01) B29C 33/00 (2006.01) B29C 44/38 (2006.01)

Patent

CA 2201672

The present invention is directed to an improved method for preparing a product by introducing a rigid polyurethane foam formulation into a cavity defined by two spaced apart formed sheets and allowing the formulation to foam. In one embodiment, the improvement resides in providing at least one of the sheets with a portion having the shape of a gate of the type used in polyurethane reaction injection molding and introducing the formulation through that gate so that the formulation enters the cavity as a laminar stream.

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