Method for making sacks provided with cross-bottoms

Details Method for making sacks provided with cross-bottoms Method for making sacks provided with cross-bottoms

1979-03-14

1981-05-12

Baldwin, Robert D.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493224, B31B 162, B31B 184

Patent

active

042664691

ABSTRACT:
A web of bag-making material has folded rectangular sheets adhered at intervals to one face by one flap of each sheet before longitudinal margins of the web are folded over, stuck to the other flap of each sheet and joined where they overlap to define a tube, whereafter sections are severed from the tube to make bags to be formed with cross-bottom closures at the ends. The size and position of the folded sheets are such that each sheet will subsequently form an internal seal for the cross-bottom closure.

REFERENCES:
patent: 3195424 (1965-07-01), Camerini
patent: 3272093 (1966-09-01), Brockmuller
patent: 3473446 (1969-10-01), Berghgracht

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