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:
Jul. 18, 2006
Filed:
Sep. 27, 2001
Fumio Kurihara, Tokyo, JP;
Junji Koujina, Tokyo, JP;
Akihiko Morikawa, Tokyo, JP;
Akio Aoyama, Tokyo, JP;
Masaki Maeda, Tokyo, JP;
Fumio Kurihara, Tokyo, JP;
Junji Koujina, Tokyo, JP;
Akihiko Morikawa, Tokyo, JP;
Akio Aoyama, Tokyo, JP;
Masaki Maeda, Tokyo, JP;
JSR Corporation, Tokyo, JP;
Abstract
Objects of the present invention are to provide a method for molding polymers to be able to mold products each of which has an outer shape transferred accurately from the shape of the inside of a mold, exhibits high dimensional accuracy and is uniform in the thickness of its surface skin layer and the expansion ratio in its foamed inside. A molten polymeris injected into a cavityand simultaneously gas is pressed to the inside of the molten polymerto contact the polymer close to the surface of the mold, and then gas is exhausted while maintaining the shape inside the mold, to thereby mold a polymer formed product in which a surface skin layerand a foamed insidehaving cushioning property are formed in one piece.