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:
Mar. 07, 2000
Filed:
Mar. 31, 1998
Tsutomu Miyamoto, Ibaraki-ken, JP;
Fusao Tokuhiro, Chiba-ken, JP;
Hiroshi Shimizu, Chiba-ken, JP;
Masato Katou, Chiba-ken, JP;
Nippon Petrochemicals Co., Ltd., Tokyo, JP;
Abstract
A method for laminating a porous sheet 1 and a coarse mesh reinforcing material 2 which includes an adhesive layer and is reinforced by drawing, by heat pressing with that adhesive layer in between, in which, (1) the heating temperature during heat pressing is equal to or above the melting point of the adhesive layer and equal to or below the melting point of the porous sheet, (2) a specific relationship is maintained among the difference between the heating temperature and the melting point of the adhesive layer, the difference between the heating temperature and the softening point of the porous sheet, and the heating time, and (3) the unrolling tension of the porous sheet is maintained at 200 to 550 g/mm.sup.2. The method allows a reinforced laminated material that retains moisture permeability and has excellent mechanical strength to be obtained inexpensively without the occurrence of wrinkling or remarkable curling