Plastic bag comprising venting means

Details Plastic bag comprising venting means Plastic bag comprising venting means

1982-03-05

1984-04-03

Pollard, Steven M.

Flexible bags

With closure

Self-closing type

383 56, B65D 3024

Patent

active

044412096

ABSTRACT:
A plastic bag provided with a filling valve and a gas permeable dust filtering pocket opposite said valve, allowing gas to escape from the interior of the bag.
A disconnectable spot adhesive connection exists between a layer of said pocket and the adjacent bag wall parts opposite a corner flap. An additional adhesive or welding connection may be present near the free end of the pocket for connecting the layer with the bottom flaps.

REFERENCES:
patent: 2040337 (1935-04-01), Rosmait
patent: 2904241 (1959-09-01), Gorton et al.
patent: 2968432 (1961-01-01), Craighead
patent: 3000551 (1961-09-01), Atwood

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