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Patent Searching and Data


Title:
PREFORM CAN AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2022/054361
Kind Code:
A1
Abstract:
The purpose of the present invention is to further improve the compressive strength of a can body. A preform can has, in the bottom portion of a bottomed cylinder, a dome portion that is recessed inward in the bottomed cylinder and an annular leg portion that protrudes toward the side opposite from the recessed side of the dome portion, and the inner surface of the dome portion is pressed to thereby mold a molded can. The maximum height from the ground plane to the dome portion of the preform can is greater than the maximum height from the ground plane to the dome portion of the molded can after molding, the length of the inner peripheral part of the leg portion that connects the ground point of the leg portion and the dome portion in the preform can as viewed in a vertical cross section along the can axis direction is greater than the length of the curved end part that is molded around the dome portion in the molded can after molding.

Inventors:
FUKUMOTO HAYATO (JP)
Application Number:
PCT/JP2021/022873
Publication Date:
March 17, 2022
Filing Date:
June 16, 2021
Export Citation:
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Assignee:
TOYO SEIKAN KAISHA LTD (JP)
International Classes:
B21D22/28; B21D22/30; B21D51/26; B65D1/16; B65D1/46
Domestic Patent References:
WO2020158355A12020-08-06
Foreign References:
US20160318645A12016-11-03
JPH04123825A1992-04-23
JPH09285832A1997-11-04
JP2016043991A2016-04-04
Attorney, Agent or Firm:
EBISU INTERNATIONAL PATENT OFFICE (JP)
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