EASILY OPENABLE METALLIC CAN LID OF SUPERIOR OPENABILITY AND METHOD OF MANUFACTURING SAME

Title:

EASILY OPENABLE METALLIC CAN LID OF SUPERIOR OPENABILITY AND METHOD OF MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/1996/026026

Kind Code:

A1

Abstract:

An easily openable metallic can lid and a method of manufacturing the same, in which a guide groove in the can lid for opening is S-shaped in cross section to improve an opening property, generation of resin film defects in molding process is eliminated, and repair coating on inner and outer surfaces of the can lid is unnecessary. When an opening piece, which is easily opened by a hand of a user, is formed on the metallic can lid, a property of a resin film on a metallic sheet, shapes, dimensions and clearance of shoulders on a punch and a die, a retained thickness of a guide groove for opening, a degree of press-back work and the like are specified to form a guide groove for opening, which is S-shaped in cross section, without breaking the resin film, thereby attaining a superior opening property.

Inventors:

OYAGI YASHICHI (JP)
MANABE KOUJI (JP)
NISHIDA HIROSHI (JP)
SENUMA TAKEHIDE (JP)
ITOH HIROSHI (JP)
YANO MASAAKI (JP)
TAKESHITA TETSUROU (JP)
IZAKI TERUAKI (JP)
TANIMOTO SHINJI (JP)

Application Number:

PCT/JP1996/000408

Publication Date:

August 29, 1996

Filing Date:

February 22, 1996

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
OYAGI YASHICHI (JP)
MANABE KOUJI (JP)
NISHIDA HIROSHI (JP)
SENUMA TAKEHIDE (JP)
ITOH HIROSHI (JP)
YANO MASAAKI (JP)
TAKESHITA TETSUROU (JP)
IZAKI TERUAKI (JP)
TANIMOTO SHINJI (JP)

International Classes:

B21D51/38; B65D17/32; (IPC1-7): B21D51/44

Foreign References:

JPS6264441A	1987-03-23
JPS56117843A	1981-09-16
JPS63290636A	1988-11-28
JPS6312445A	1988-01-19

Other References: