The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 2010
Filed:
Aug. 23, 2006
Akio Okamoto, Sanyouonoda, JP;
Kazuaki Miyamoto, Ube, JP;
Akio Okamoto, Sanyouonoda, JP;
Kazuaki Miyamoto, Ube, JP;
Ube Machinery Corporation, Ltd., Ube-shi, JP;
Abstract
A method for injection foaming molding of a thermoplastic resin includes the steps of (1) injecting the foaming-agent-containing plasticized resin from an injection apparatusto fill a mold cavity, (2) releasing a clamping force of a moldimmediately after the foaming-agent-containing plasticized resin is injected and filled into the mold cavity, so as to release the pressure of the foaming-agent-containing plasticized resin in the mold cavity, (3) maintaining the pressure-released state of the foaming-agent-containing plasticized resin in the mold cavityfor a predetermined period of time, (4) expanding the mold cavityto foam the foaming-agent-containing plasticized resin, and (5) cooling and maintaining the foaming-agent-containing plasticized resin while the mold cavityis in the expanded state.