Apparatus for making tear resistant separable end-connected bags

Details Apparatus for making tear resistant separable end-connected bags Apparatus for making tear resistant separable end-connected bags

1976-06-15

1977-12-27

Meister, J. M.

Cutting

With means to control or modify temperature of apparatus or...

Of tool

83 16, 83195, 93 54, B26D 710

Patent

active

040647765

ABSTRACT:
Continuous strip closed-bottom open-mouthed packaging bags are produced by continually making, at spaced intervals in a continuous flattened tubular oriented plastic film supply, a transversely extending heat seal to define a bag bottom, and, adjacent each heat seal, perforating the two plies of the film supply with a blade heated to effect annealing of the edges of the perforations and having a serrated cutting edge with spaced deep recesses to define connecting tabs between perforations.

REFERENCES:
patent: RE28911 (1976-07-01), Jespersen
patent: 371736 (1887-10-01), Burton
patent: 1518260 (1974-12-01), Hislop
patent: 1972133 (1934-09-01), Darrow
patent: 2748863 (1956-06-01), Benton
patent: 3590695 (1971-07-01), Gerard

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