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. 27, 1978
Filed:
Feb. 24, 1976
Hayao Shimokawa, Ebina, JA;
Makoto Nakamuri, Hiratsuka, JA;
Hideyo Ueno, Hiratsuka, JA;
Isamu Namiki, Yokohama, JA;
Naonori Shiina, Tokyo, JA;
The Furukawa Electric Co., Ltd., Tokyo, JA;
Abstract
A method of manufacturing a foamed polyolefin sheet which comprises the steps of laminating a film of noncross-linked thermoplastic resin free from a cross-linking agent to at least one surface of a cross-linked polyolefin base sheet containing a thermally decomposable foaming agent or a polyolefin base sheet containing the above-mentioned foaming agent and a cross-linking agent, and carrying out the thermal foaming of said film-fitted sheet while placing it on a supporting member under atmospheric pressure with the film-laminated surface of the polyolefin sheet being in contact with said supporting member.