JPS55158842A - Scoring method of easy-to-open can cover - Google Patents

Scoring method of easy-to-open can cover

Info

Publication number
JPS55158842A
JPS55158842A JP6678479A JP6678479A JPS55158842A JP S55158842 A JPS55158842 A JP S55158842A JP 6678479 A JP6678479 A JP 6678479A JP 6678479 A JP6678479 A JP 6678479A JP S55158842 A JPS55158842 A JP S55158842A
Authority
JP
Japan
Prior art keywords
score
cover
electrochemically
residual thickness
easy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6678479A
Other languages
Japanese (ja)
Inventor
Yoshikazu Kondo
Tadashi Nemoto
Ryoichi Fukumoto
Keiichi Shimizu
Keiji Yamane
Yoichi Kitamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Kohan Co Ltd
Toyo Seikan Group Holdings Ltd
Original Assignee
Toyo Kohan Co Ltd
Toyo Seikan Kaisha Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyo Kohan Co Ltd, Toyo Seikan Kaisha Ltd filed Critical Toyo Kohan Co Ltd
Priority to JP6678479A priority Critical patent/JPS55158842A/en
Publication of JPS55158842A publication Critical patent/JPS55158842A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To decrease the residual thickness of a score without producing any cracking in the bottom of the score and improve can-opening characteristic by working the score to the can cover then electrochemically or chemically dissolving the score.
CONSTITUTION: Scoring is applied to a steel sheet for can cover by using suitable tools 16, 17. Thence, with the cover 20 as anode, the score part 10 is dissolved electrochemically in an electrolyte solution 40 such as ferric chloride or ferric sulfate. Or the solution having metal dissolving capacity is contacted with the score part 10 to dissolve the score part 10. This method comprises using inexpensive materials such as tin plates and making the residual thickness of the score thinner within the range of posing no proglems in terms of can strength and yields the can-opening force which compares sufficiently with that of aluminum material.
COPYRIGHT: (C)1980,JPO&Japio
JP6678479A 1979-05-31 1979-05-31 Scoring method of easy-to-open can cover Pending JPS55158842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6678479A JPS55158842A (en) 1979-05-31 1979-05-31 Scoring method of easy-to-open can cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6678479A JPS55158842A (en) 1979-05-31 1979-05-31 Scoring method of easy-to-open can cover

Publications (1)

Publication Number Publication Date
JPS55158842A true JPS55158842A (en) 1980-12-10

Family

ID=13325827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6678479A Pending JPS55158842A (en) 1979-05-31 1979-05-31 Scoring method of easy-to-open can cover

Country Status (1)

Country Link
JP (1) JPS55158842A (en)

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