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. 18, 1996
Filed:
Aug. 29, 1994
Eiichi Kato, Tokyo, JP;
Eiji Takahashi, Tokyo, JP;
Hiroshi Kondo, Tokyo, JP;
Hiroji Niimi, Yamaguchi, JP;
Takashi Hiraoka, Yamaguchi, JP;
Masayuki Sakai, Yamaguchi, JP;
Masaki Kohsaka, Yamaguchi, JP;
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Abstract
A packaging laminate material comprises a paper substrate and a polyester resin layer provided on at least the innermost surface side of the substrate, wherein the polyester resin comprises dicarboxylic acid units comprising terephthalic acid and adipic acid and dihydroxy compound units comprising ethylene glycol and a second different dihydroxy compound. The polyester may also contain polyfunctional units derived from a polycarboxylic acid having a valence of 3 or more and/or derived from a polyglycol having a valence of 3 or more. The packaging laminate has a high heat-sealing strength, a small decrease in the heat-sealing strength even after the laminate is subjected to a hot water treatment or a hot hydrogen peroxide treatment, and is excellent in scent (odor) retention properties.