Multiwall pouch bag with vent strip

Details Multiwall pouch bag with vent strip Multiwall pouch bag with vent strip

1982-03-08

1984-09-04

Dixson, Jr., William T.

Flexible bags

With venting or ventilation means

383 78, 383107, 383103, 493213, 493932, 206439, 2064841, B65D 3301

Patent

active

044701535

ABSTRACT:
A multiwall bag having an interior plastic pouch formed from a sealed plastic tube having a longitudinal seam comprising overlapping tube margins sealed together by two spaced seals to provide a channel, one of the tube margins being formed with openings providing communication between the interior of the tube and the channel to permit escape of air from the tube. A strip of material is disposed along the length of the channel to prevent the overlapping tube margins from adhering to each other between the spaced seals.

REFERENCES:
patent: 2821338 (1958-01-01), Metzger
patent: 3092249 (1963-06-01), Chapman
patent: 3302859 (1967-02-01), Perry
patent: 3309006 (1967-03-01), Perry et al.
patent: 3394871 (1968-07-01), Williams et al.
patent: 3468471 (1969-09-01), Linder
patent: 3807626 (1974-04-01), Goodrich
patent: 3910488 (1975-10-01), Goodrich
patent: 3927825 (1975-12-01), Stearley
patent: 3958749 (1976-05-01), Goodrich
patent: 4057144 (1977-11-01), Schuster
patent: 4088264 (1978-05-01), Vogt

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