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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 12097688 B1

PDFFull Text
Date of Patent:
Sep. 24, 2024

Filed:

Dec. 04, 2020

Multilayer structure, method for producing same, packaging material and product including same, and protective sheet for electronic device

Applicant:

Kuraray Co., Ltd., Okayama, JP;

Inventors:

Shuhei Kuzume, Okayama, JP;

Ryoichi Sasaki, Okayama, JP;

Yasushi Morihara, Okayama, JP;

Assignee:

KURARAY CO., LTD., Okayama, JP;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Vivian Chen

Int. Cl.
CPC ...
B32B 27/30 (2006.01); B05D 1/36 (2006.01); B05D 7/00 (2006.01); B05D 7/24 (2006.01); B32B 7/10 (2006.01); B32B 15/082 (2006.01); B32B 15/09 (2006.01); B32B 15/20 (2006.01); B32B 27/36 (2006.01); B65D 81/38 (2006.01); C09D 129/04 (2006.01); C09D 167/02 (2006.01); C09D 167/03 (2006.01);
U.S. Cl.
CPC ...
B32B 27/306 (2013.01); B32B 7/10 (2013.01); B32B 15/082 (2013.01); B32B 15/09 (2013.01); B32B 15/20 (2013.01); B32B 27/36 (2013.01); B65D 81/38 (2013.01); B05D 1/36 (2013.01); B05D 7/24 (2013.01); B05D 7/544 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/7244 (2013.01); B32B 2367/00 (2013.01); B32B 2439/06 (2013.01); B32B 2439/70 (2013.01); B32B 2439/80 (2013.01); B32B 2457/00 (2013.01); C09D 129/04 (2013.01); C09D 167/02 (2013.01); C09D 167/03 (2013.01);
Abstract

The present invention provides a multilayer structure that has excellent gas barrier properties and an excellent peel strength between a base and a gas barrier layer after retorting, and that can retain a good appearance with no delamination even after retorting under stress. The present invention also provides packaging materials and products including such a multilayer structure. The present invention relates to a multilayer structure comprising a base (X), a layer (Z) stacked on the base (X), and a layer (Y) stacked on the layer (Z), the layer (Y) containing a reaction product (D) of an aluminum-containing metal oxide (A) and an inorganic phosphorus compound (BI), the layer (Z) containing a polyvinyl alcohol resin (C) and a polyester resin (L).

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