Tear resistant separable end-connected bags

Details Tear resistant separable end-connected bags Tear resistant separable end-connected bags

1979-08-29

1981-08-25

Wityshyn, Michael G.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

156250, 156253, 156290, 156510, 493203, 493209, 493238, 493239, B31B 114, B32B 3118, B32B 3120

Patent

active

042856817

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: 421497 (1890-02-01), Hicks
patent: 465588 (1891-12-01), Wheeler
patent: 2925175 (1960-02-01), Williamson et al.
patent: 3372797 (1968-03-01), Grevich
patent: 3406818 (1968-10-01), Barnett
patent: 3441198 (1969-04-01), Ericson
patent: 3481461 (1969-12-01), Paxton
patent: 3578239 (1971-05-01), Perlman
patent: 3618439 (1971-11-01), Zelnick
patent: 3716132 (1973-02-01), Lewyckyj
patent: 3738482 (1973-06-01), Cwikla
patent: 3762542 (1973-10-01), Grimes
patent: 3893382 (1975-07-01), Bosse et al.
patent: 3960062 (1976-06-01), Leloux
patent: 3966524 (1976-06-01), Lehmacher
patent: 3979050 (1976-09-01), Cilia
patent: 3994209 (1976-11-01), Jacob
patent: 4140046 (1979-02-01), Marbach

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