Method of manufacturing a container body having a tear strip, th

Details Method of manufacturing a container body having a tear strip, th Method of manufacturing a container body having a tear strip, th

1985-06-18

1987-09-15

Schmidt, Frederick R.

Sheet metal container making

Method

413 7, 413 77, 220 75, 220266, 220270, 220274, 219 64, 228191, B21D 5126, B23K 1106, B65D 1736

Patent

active

046936580

ABSTRACT:
The disclosure relates to a method of manufacturing a body formed of a shaped sheet metal blank having an opening tear strip terminating in a tongue. Overlapping edges of the blank are welded together and at the tear strip melting of a tin coating of the blank occurs so that at the tear strip the edges of the blank are linked by melted tin, or welding is completely interrupted to form a slot at the tear strip between the overlapping edges of the blank and the slot using a sealing material. Further, the disclosure relates to a metal blank for a can body having a tear strip formed there across by two weakening scores extending transversely to the edges of the blank and terminating in a tongue. The tear strip at one of the edges of the blank is provided with a covering and/or oxide layer which has a relatively low electrical conductivity.

REFERENCES:
patent: 1954840 (1934-04-01), Young
patent: 3077171 (1963-02-01), Gotsch et al.
patent: 3618817 (1971-11-01), Troughton
patent: 3838787 (1974-10-01), McCloskey

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