Convenience-feature non-circular end closure with interrupted pa

Details Convenience-feature non-circular end closure with interrupted pa Convenience-feature non-circular end closure with interrupted pa

1992-08-12

1993-10-12

Kisliuk, Bruce M.

Sheet metal container making

Apparatus to form container closure

Having means forming frangible zone on closure

413 12, 413 15, 413 17, B21D 2206, B21D 5144

Patent

active

052520196

ABSTRACT:
Forming a convenience-feature, sheet metal end closure structure (180, 216) for a container having a non-cylindrical side wall (250). Scoring and back-up tooling enable peripheral scoring (102, 130, 142) on either surface of such end closure to define a separable panel (160, 218) with its peripheral scoreline located contiguous to the end closure chuck wall (132, 144); which interfits within the open end of the container body. Separation of such endwall panel leaves substantially no obstruction to removal of solid-pack contents. The separable panel is provided with means to prevent tear-out of a segment of the endwall panel and retain an integral opener (148) with the panel. Preselected placement of such elongated integral opener as designated on various non-circular configuration endwall panels, along with novel shaping of tooling chuck (270), enables desired chuck wall support for chime seam assembly of the end closure a container body as well as desired placement of the opener working end contiguous to such chuck wall and peripheral scoreline.

REFERENCES:
patent: 1838302 (1931-12-01), Evans
patent: 3688718 (1972-09-01), Shrecker
patent: 3741142 (1973-06-01), Stuard
patent: 3945334 (1976-03-01), Ostrem
patent: 4036160 (1977-07-01), Kelley

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