Flexible bags – With venting or ventilation means – Opening in bag material
Patent
1983-04-22
1985-01-01
Garbe, Stephen P.
Flexible bags
With venting or ventilation means
Opening in bag material
383104, B65D 2710, B65D 3301
Patent
active
044919590
ABSTRACT:
A plastic bag 1 with gusset fold parts 7, 8; 7a, 8a bounded by a central gusset fold edge 3, 3a and outer gusset fold edge 4, 5; 4a, 5a, is provided with a transverse seal 6 and first fold part seals 9, 10, 11, 12 at either side of the bag. Perforations 14 are present in the first and second gusset fold parts 7, 7; 7a, 8a in the area bound by said first fold part seals 9, 10, 12, 12, imaginary lines 15, 15a and the central gusset fold edges 3, 3a. The imaginary lines 15, 15a extend parallel to the transverse seal 6 and through the intersection of the first fold part seals and outer gusset fold edge 4, 5; 4a, 5a. Similar perforations 14 may be present at the other side of the bag in the region of the gusset fold parts bound by the central gusset fold edge 3, 3a, second fold part seals 16, 17, 18, 19 and imaginary lines 26, 26a extending parallel to the transverse seal 6 and through the intersection of second fold part seals 16, 17, 18, 19 and outer fold edges 4, 5; 4a, 5a.
REFERENCES:
patent: 3254828 (1966-06-01), Lerner
patent: 3355303 (1967-11-01), Meyers
patent: 3378189 (1968-04-01), Dickson
patent: 3381886 (1968-05-01), Goglio
patent: 3481461 (1969-12-01), Paxton
patent: 4071187 (1978-01-01), La Fleur
Garbe Stephen P.
Wavin B.V.
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