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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 11214041 B1

PDFFull Text
Date of Patent:
Jan. 04, 2022

Filed:

Jul. 19, 2017

Oxygen-absorbing packaging material

Applicant:

Toyo Seikan Group Holdings, Ltd., Tokyo, JP;

Inventors:

Takafumi Ohsawa, Yokohama, JP;

Yoshihiro Ohta, Yokohama, JP;

Hiroki Komagata, Yokohama, JP;

Assignee:

Toyo Seikan Group Holdings, Ltd., Tokyo, JP;

Attorney:

Marshall, Gerstein & Borun LLP

Primary Examiner:

Eli D Strah

Assistant Examiner:

Thomas J Kessler

Int. Cl.
CPC ...
B32B 15/09 (2006.01); B32B 7/12 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B65D 65/40 (2006.01);
U.S. Cl.
CPC ...
B32B 15/09 (2013.01); B32B 7/12 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/308 (2013.01); B32B 27/325 (2013.01); B32B 27/36 (2013.01); B65D 65/40 (2013.01); B32B 2270/00 (2013.01); B32B 2307/31 (2013.01); B32B 2307/518 (2013.01); B32B 2307/7244 (2013.01); B32B 2439/70 (2013.01); B32B 2439/80 (2013.01);
Abstract

Provided is an oxygen-absorbing packaging material which is used for adhesive patches or the like containing an easily oxidizable component and an oily component, and which has improved tearability, while maintaining good heat seal strength. The present invention relates to an easily tearable oxygen-absorbing packaging material which has a multilayer structure comprising an oxygen barrier layer, an oxygen absorption layer and a sealant film, and wherein: the sealant film is a multilayer resin film that comprises at least a core layer and an inner layer having heat sealability; and the core layer contains 20-40% by mass of a cyclic polyolefin resin and/or an acrylic resin and 60-80% by mass of a polyethylene terephthalate resin relative to the total mass of the core layer.

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