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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 10414565 B1

PDFFull Text
Date of Patent:
Sep. 17, 2019

Filed:

Apr. 28, 2014

Heat-shrinkable multilayer film

Applicant:

Kureha Corporation, Tokyo, JP;

Inventors:

Tadayoshi Itoh, Tokyo, JP;

Yuta Sekiya, Tokyo, JP;

Hisanori Tobita, Tokyo, JP;

Assignee:

KUREHA CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

John D Freeman

Int. Cl.
CPC ...
B65D 71/08 (2006.01); B32B 27/30 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B29C 48/10 (2019.01); B29C 48/00 (2019.01); B29C 48/88 (2019.01); B29C 48/91 (2019.01); B32B 27/28 (2006.01); B29C 55/28 (2006.01); B32B 27/08 (2006.01); B65B 53/04 (2006.01); B65D 65/38 (2006.01); A23L 13/00 (2016.01); B32B 27/20 (2006.01); B29C 48/08 (2019.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B65D 71/08 (2013.01); A23L 13/00 (2016.08); B29C 48/0018 (2019.02); B29C 48/08 (2019.02); B29C 48/10 (2019.02); B29C 48/912 (2019.02); B29C 48/9105 (2019.02); B29C 48/919 (2019.02); B29C 55/28 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/28 (2013.01); B32B 27/306 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B65B 53/04 (2013.01); B65D 65/38 (2013.01); B29C 48/91 (2019.02); B29C 48/913 (2019.02); B29K 2105/0067 (2013.01); B29K 2995/0049 (2013.01); B32B 2250/04 (2013.01); B32B 2250/24 (2013.01); B32B 2307/306 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/746 (2013.01); B32B 2439/70 (2013.01); Y10T 428/1328 (2015.01); Y10T 428/1352 (2015.01); Y10T 428/3175 (2015.04); Y10T 428/31786 (2015.04); Y10T 428/31935 (2015.04);
Abstract

A heat-shrinkable multilayer film for being filled with contents, comprising an outer surface layer (A) comprising a heat-resistant thermoplastic resin, an intermediate layer (B) comprising a polyamide-based resin, an inner surface layer (D) comprising an ethylene-based copolymer, and adhesion strength between inner surface layers after treatment with 80° C. hot water being not less than 10 N/15 mm. The polyamide-based heat-shrinkable multilayer film obtained in this manner has optimal characteristics for applications that primarily require strength, and has greatly improved self-weldability demanded in packaging films for meat products such as fresh and processed meats.

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