Method for producing aerosol can tops

Details Method for producing aerosol can tops Method for producing aerosol can tops

1979-03-07

1981-09-22

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72327, 72338, B21D 2200

Patent

active

042902940

ABSTRACT:
A method of making the opening in aerosol can tops in two operations on a transfer press. One operation produces a score line on the upper radius of the pre-drawn cylindrical portion which compresses the material and permits a clean and burr-free separation. In the following station the disc is pulled radially towards the center, formed into a cup and ejected downwards. The fact that the material is being compressed in the scoring operation, that the edge thickness is equal to the original material thickness and that the edge of the opening is clean, smooth and free of burrs, permits the subsequent formation of the curl without the risk of splitting when using harder and less expensive material.

REFERENCES:
patent: 790735 (1905-05-01), Martin
patent: 1173793 (1916-02-01), George
patent: 3706292 (1972-12-01), Saunders
patent: 4027612 (1977-06-01), Herbst

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