Method and apparatus for blanking, folding and inserting membran

Details Method and apparatus for blanking, folding and inserting membran Method and apparatus for blanking, folding and inserting membran

1980-06-23

1982-07-27

Rosenbaum, Mark

Sheet metal container making

Method

Assembling receptacle with closure

413 9, 413 64, B21D 5146

Patent

active

043414982

ABSTRACT:
A method and apparatus for blanking, folding and inserting induction heat sealable membranes, having a disc and integral tab portion, in container covercaps in one continuous punch stroke. The tab portion is blanked from foil stock and folding of the tab is initiated during tab blanking along a fold line located at the periphery of the disc portion. The disc portion of the membrane is then blanked while continuing to fold the tab portion to an intermediate reverse folded position. The blanked membrane is then inserted into an overcap to press the tab between the membrane disc portion and the covercap to further fold the tab along the fold line.

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patent: 4295436 (1981-10-01), Zangari et al.

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