Openable can body

Details Openable can body Openable can body

1986-07-14

1987-12-15

Schmidt, Frederick R.

Sheet metal container making

Apparatus for can body making

Blank feed

413 54, 413 55, 413 77, 219 64, B21D 5128

Patent

active

047129603

ABSTRACT:
A can body is rolled from a sheet-metal blank (28) and has outer and inner longitudinal edges (12 and 14 respectively) which are welded to one another in an overlapping manner. Extending round the can body transversely to the longitudinal edges (12, 14) are two circumferential scorings (16) which define a tearing strip (18) laterally. The tearing strip (18) is extended by a tongue (20) which is welded onto the outer longitudinal edge (12) and which can be gripped by a key and rolled up. In a welding zone (42) which is adjacent to a starting scoring (30), the tearing strip (18) is stiffened by the welded-on tongue (20) in such a manner that it tears away from the can body reliably along the circumferential scorings (16) during the rolling up of the tongue (20).

REFERENCES:
patent: 402882 (1889-05-01), Ams
patent: 1625091 (1927-04-01), Peters
patent: 2304824 (1942-12-01), Hothersall
patent: 2353728 (1944-07-01), Hubbell
patent: 2806628 (1957-09-01), Morrill et al.
patent: 3838787 (1974-10-01), McCloskey

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