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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 9790006 B1

PDFFull Text
Date of Patent:
Oct. 17, 2017

Filed:

Mar. 28, 2013

Cover material for packaging container for retort sterilization

Applicant:

Dai Nippon Printing Co., Ltd., Tokyo, JP;

Inventors:

Masato Yuno, Tokyo, JP;

Kaoru Watanabe, Tokyo, JP;

Assignee:

DAI NIPPON PRINTING CO., LTD., Tokyo, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Yan Lan

Int. Cl.
CPC ...
B32B 15/085 (2006.01); B32B 15/09 (2006.01); B32B 15/08 (2006.01); B32B 7/02 (2006.01); B32B 7/12 (2006.01); B65D 43/02 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 7/06 (2006.01); B32B 15/20 (2006.01); B65D 77/20 (2006.01);
U.S. Cl.
CPC ...
B65D 43/0233 (2013.01); B32B 7/02 (2013.01); B32B 7/06 (2013.01); B32B 7/12 (2013.01); B32B 15/08 (2013.01); B32B 15/085 (2013.01); B32B 15/09 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B65D 77/2032 (2013.01); B32B 2270/00 (2013.01); B32B 2307/31 (2013.01); B32B 2307/732 (2013.01); B32B 2307/748 (2013.01); B32B 2323/043 (2013.01); B32B 2435/02 (2013.01); B32B 2439/80 (2013.01); B32B 2581/00 (2013.01); Y10T 428/24975 (2015.01);
Abstract

Provided is a cover material for packaging contains for retort sterilization which comes to exhibit excellent sealing strength through low-temperature, short-time heat sealing. The cover material for packaging containers for retort sterilization is constituted of a multilayered laminate obtained by superposing a base layer, an interlayer, and a sealing layer in this order, and is characterized in that the base layer is constituted of a laminated film obtained by laminating a polyethylene terephthalate film or polybutylene terephthalate film to an aluminum foil and the aluminum foil of the base layer has been laminated to the interlayer with a polyurethane-based adhesive or a polyester-based adhesive, and that the aluminum foil has a thickness of 7-40 μm, the polyethylene terephthalate film or the polybutylene terephthalate film has a thickness of 6-18 μm, the interlayer has a thickness of 10-100 μm, and the sealing layer has a thickness of 3-20 μm.

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