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:
Oct. 16, 1990
Filed:
Feb. 28, 1989
Yoshiharu Nishimoto, Iwaki, JP;
Kengo Yamazaki, Iwaki, JP;
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A heat-shrinkable laminated film suitable for a packaging film, having at least two layers of a mixed aliphatic polyamide resin layer (A) of 55 to 90 wt. % of an aliphatic polyamide resin with a crystalline melting point of 175.degree. to 240.degree. C. and 45 to 10 wt % of an aliphatic polyamide resin with a crystalline melting point of from not less than 120.degree. C. to less than 175.degree. C.; and a mixed resin layer (B) of a saponified ethylene-vinyl acetate copolymer as the main constituent. These laminated films have excellent gas barrier properties, stretchability, uniform heat-shrinkability and useful dimensional stability.