Abstract: This invention concerns an injection molding process for soles having a colored treading surface produced with expansible and cross-linking "EVA" compounds involving the use of colored inserts molded with the same molding material used for sole, but of a different color, fed into cups on the bottom of the mold impression and shut by caps also molded in the same material used to mold the soles.
Abstract: The present invention is directed to a method of making a foamable film of at least one thermoplastic resin with at least one liquid blowing agent incorporated therein, said method comprising forming the thermoplastic resin and a liquid swelling agent for the thermoplastic resin into a layer, contacting the said layer with the liquid blowing agent and replacing at least part of the swelling agent in the resin by the liquid blowing agent.
Type:
Grant
Filed:
June 24, 1996
Date of Patent:
March 31, 1998
Assignee:
Tsutsunaka Plastic Industry Co., Ltd.
Inventors:
Pieter Willem Provo Kluit, Adriaan Beukers
Abstract: A polymeric resin composition comprising a polymeric resin in particulate form coated with an additive agent adhered to the surfaces of the resin particles by a coating of thermoplastic adhesive binder between the particles and the agent.
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