Flexible bags – With closure – Including separate closure element for straddling bag mouth
Patent
1990-01-18
1991-03-05
Lowrance, George E.
Flexible bags
With closure
Including separate closure element for straddling bag mouth
383116, 383120, 383 55, 383908, 206613, 206632, B65D 3322
Patent
active
049972898
ABSTRACT:
Here is disclosed an overtape-sealed comprising a paper tube, having longitudinally opposite open ends one and/or both of which is covered and sealed with a twofold overtape wherein the overtape is bonded to the paper tube with adhesive having penetrated the outermost layer of the paper tube so that a release resistance established between the overtape and the outermost layer of the paper tube is higher than a release resistance of an inner layer not penetrated by said adhesive with respect to said outermost layer and thereby unsealing of the paper bag can occur along a boundary between the outermost layer and the inner layer or along the inner layer itself of the paper bag in proximity of said boundary.
Here is also disclosed an overtape-sealed bag wherein the paper tube is a gusset paper tube and wherein a pair of mutually opposed outer surface sections of each gusset are bonded to each other with use of adhesive over an area thereof to be covered by the overtape while the corresponding inner surface sections of each gusset are not bonded to the inner surfaces of the paper tube's respective major walls so as to provide shock absorbing means.
REFERENCES:
patent: 1791178 (1931-02-01), Walker
patent: 2075166 (1937-03-01), Brady
patent: 2294846 (1942-09-01), Haungs
patent: 2409621 (1946-08-01), Geimer et al.
patent: 3141601 (1964-07-01), Ayres et al.
patent: 3162285 (1939-06-01), Scott
Sasaki Koji
Teshima Kaoru
Lowrance George E.
Ohishi Sangyo Co., Ltd.
Pascua Jes F.
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