Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michio Eriguchi0
Eiichi Sugihara0
Masaki Misumi0
Date of Patent
December 19, 2006
0Patent Application Number
109094010
Date Filed
August 3, 2004
0Patent Primary Examiner
Patent abstract
A process for injection-foaming a thermoplastic resin by using an injection molding machine with a two-stage-compression screw, injecting a physical foaming agent into the cylinder of the machine at a pressure lower than the storage pressure of the physical foaming agent, mixing it with a melted resin and expanding the volume of the cavity of the mold at the time of injection, and an injection molding machine and resin composition suitable therefore.
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