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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 10052675 B1

PDFFull Text
Date of Patent:
Aug. 21, 2018

Filed:

Sep. 11, 2013

Method of manufacturing two-piece food can

Applicant:

Daiwa Can Company, Tokyo, JP;

Inventors:

Hiroko Namekawa, Kanagawa, JP;

Koichiro Nakamura, Kanagawa, JP;

Shigeru Noto, Kanagawa, JP;

Yuichiro Murayama, Kanagawa, JP;

Chiharu Nabeta, Kanagawa, JP;

Tomohiko Oyanagi, Kanagawa, JP;

Assignee:

DAIWA CAN COMPANY, Tokyo, JP;

Attorney:

Rankin, Hill & Clark LLP

Primary Examiner:

Pradeep C Battula

Int. Cl.
CPC ...
B21D 51/26 (2006.01); B21D 22/20 (2006.01); B65D 1/28 (2006.01); B21D 22/28 (2006.01); B32B 15/08 (2006.01); B32B 15/18 (2006.01); B32B 15/20 (2006.01); B65D 1/16 (2006.01); B32B 15/09 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 1/08 (2006.01); B32B 3/28 (2006.01); C09D 5/00 (2006.01);
U.S. Cl.
CPC ...
B21D 51/26 (2013.01); B21D 22/208 (2013.01); B21D 22/28 (2013.01); B21D 51/2607 (2013.01); B32B 1/08 (2013.01); B32B 3/28 (2013.01); B32B 15/08 (2013.01); B32B 15/09 (2013.01); B32B 15/18 (2013.01); B32B 15/20 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 27/365 (2013.01); B65D 1/165 (2013.01); B65D 1/28 (2013.01); C09D 5/00 (2013.01); B32B 2255/06 (2013.01); B32B 2255/26 (2013.01); B32B 2270/00 (2013.01); B32B 2307/31 (2013.01); B32B 2307/714 (2013.01); B32B 2307/732 (2013.01); B32B 2439/70 (2013.01);
Abstract

A method of manufacturing a two-piece food can having improved corrosion resistance is provided, wherein the two-piece food can using a metal sheet coated with a thermoplastic resin and having annular uneven beads and/or a bottom rim. After forming a bottomed cylindrical can body by drawing and ironing, by heating at a temperature higher than the melting temperature of the thermoplastic resin for a predetermined time before forming uneven beads and/or a bottom rim to the can body and quenching within a predetermined time after heating, the inner resin coating hardly peel off during the following formation of uneven beads and/or the bottom rim. As a result, a two-piece food can having excellent corrosion resistance may be obtained.

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