Method for manufacture of can end closures

Details Method for manufacture of can end closures Method for manufacture of can end closures

1977-03-14

1978-08-15

Keenan, Michael J.

113116V, 113116Y, B21D 5144

Patent

active

041064224

ABSTRACT:
The method of making convenience opened can end closures or can tops from a metallic web of coil stock which comprises the steps of piercing, marginally notching, and lancing the web according to a predetermined pattern at longitudinally spaced intervals to define a series of identical individual can top blanks which are part of a web layout in which said blanks are connected together by flexible links and are spaced apart on equal centers, and then passing the thus prepared web over the necessary stations of a single progressive die operated by a single press to complete the drawing and embossing of each web blank to form a can top therein while the web material acts as the carrier of the blanks until the can tops are cut out of the web to be transferred individually to edge curling and finishing stations comprised within the said progressive die.

REFERENCES:
patent: 2378041 (1945-06-01), Sebell
patent: 2648380 (1953-08-01), Socke
patent: 2739623 (1973-06-01), Kramer
patent: 3366086 (1968-01-01), Fraze
patent: 3888199 (1975-06-01), Herrmann

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