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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 11078375 B1

PDFFull Text
Date of Patent:
Aug. 03, 2021

Filed:

Jun. 16, 2014

Thermoplastic resin-coated metal sheet, can body and can lid made from the same metal sheet

Applicant:

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

Inventors:

Nobuhiko Nagai, Yokohama, JP;

Shuhei Hiromori, Yokohama, JP;

Assignee:

TOYO SEIKAN GROUP HOLDINGS, LTD., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Lee E Sanderson

Assistant Examiner:

Michael C Romanowski

Int. Cl.
CPC ...
B65D 1/12 (2006.01); C09D 167/02 (2006.01); C09D 165/02 (2006.01); B32B 15/09 (2006.01); B32B 15/08 (2006.01); B65D 1/16 (2006.01); C09D 5/00 (2006.01); C09D 5/08 (2006.01); B32B 15/20 (2006.01); B32B 1/00 (2006.01); B32B 27/18 (2006.01); B32B 15/18 (2006.01); B32B 7/12 (2006.01); B65D 65/42 (2006.01);
U.S. Cl.
CPC ...
C09D 167/02 (2013.01); B32B 15/08 (2013.01); B32B 15/09 (2013.01); B65D 1/12 (2013.01); B65D 1/165 (2013.01); C09D 5/002 (2013.01); C09D 5/08 (2013.01); C09D 165/02 (2013.01); B32B 1/00 (2013.01); B32B 7/12 (2013.01); B32B 15/18 (2013.01); B32B 15/20 (2013.01); B32B 27/18 (2013.01); B32B 2250/40 (2013.01); B32B 2255/06 (2013.01); B32B 2255/205 (2013.01); B32B 2255/26 (2013.01); B32B 2255/28 (2013.01); B32B 2270/00 (2013.01); B32B 2307/54 (2013.01); B32B 2307/714 (2013.01); B32B 2307/732 (2013.01); B32B 2435/02 (2013.01); B32B 2439/66 (2013.01); B65D 65/42 (2013.01);
Abstract

A thermoplastic resin-coated metal sheet obtained by coating at least one surface of a metal sheet with a thermoplastic resin via a polyester type primer, wherein the polyester type primer, if it is in the form of a 10 μm-thick dry primer sheet, has a breaking elongation in a range of 9 to 200% at a tension speed of 1000 mm/min. and an MEK extractability in a range of 3 to 40%. Without using a special thermoplastic resin-coated film or surface-treated metal sheet, therefore, the cans and can lids can be formed using the thermoplastic resin-coated metal sheet of the invention maintaining excellent and close adhesion during the working, preventing the can body from breaking and the thermoplastic resin coating from peeling at the flange-forming portion during the working, the cans and can lids excelling in dent resistance and economy.

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