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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.:

US 9505195 B1

PDFFull Text
Date of Patent:
Nov. 29, 2016

Filed:

May. 20, 2015

Heat-shrinkable laminate film

Applicant:

Asahi Kasei Chemicals Corporation, Tokyo, JP;

Inventors:

Daisuke Masaki, Tokyo, JP;

Tohru Okuda, Tokyo, JP;

Assignee:

ASAHI KASEI KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Tahseen N Khan

Int. Cl.
CPC ...
B32B 27/08 (2006.01); B32B 27/34 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 7/00 (2006.01); B32B 7/02 (2006.01); B32B 7/04 (2006.01); B32B 7/12 (2006.01); B32B 27/06 (2006.01); B32B 27/28 (2006.01);
U.S. Cl.
CPC ...
B32B 27/08 (2013.01); B32B 7/00 (2013.01); B32B 7/02 (2013.01); B32B 7/04 (2013.01); B32B 7/12 (2013.01); B32B 27/06 (2013.01); B32B 27/28 (2013.01); B32B 27/30 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 2307/30 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/732 (2013.01); B32B 2307/736 (2013.01); B32B 2439/70 (2013.01); Y10T 428/31757 (2015.04); Y10T 428/31913 (2015.04);
Abstract

A heat-shrinkable laminate film includes layer (A) and layer (B) laminated via an interface having an interlayer strength of ≦0.5 N/15 mm, in which layer (A) has at least a substrate layer containing a polypropylene-based resin, layer (B) has at least a seal layer containing a polyethylene-base resin, and any of the following is satisfied: (1) the difference in heat shrinkage rate between layer (A) and layer (B) is ≦10% at 100° C., and the laminate film includes a gas barrier layer containing a saponified ethylene-vinyl alcohol copolymer and has an oxygen transmission rate of ≦60 cc/m·day·atm; and (2) the difference in heat shrinkage rate between layer (A) and layer (B) is ≦20% at 100° C., and the heat-shrinkable laminate film includes a gas barrier layer containing an aromatic polyamide-based copolymer and has an oxygen transmission rate of ≦60 cc/m·day·atm.

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