Reclosable bag with offset end seal

Details Reclosable bag with offset end seal Reclosable bag with offset end seal

1993-04-02

1994-09-13

Weaver, Sue A.

Flexible bags

Tamper indicating

383 37, 383 93, 383204, 206807, B65D 3318

Patent

active

053463013

ABSTRACT:
The closable bag with offset end seal comprises a layer of plastic folded over itself to create an elongate strip of interconnected pockets which are separable from one another along the strip to create individual bags. Interposed between free overlying ends of the plastic strip is a gasket made of a heat sealable material having a low surface tension and coefficient of friction. A side edge of these three layers is heat sealed and scored to provide a tamper indicating strip which must be removed to open the bag. Slightly lateral to this strip is a section of the bag where the gasket is heat sealed along its length to one of the layers of plastic, with a remaining inwardly extending portion of the gasket being free to move away from the layer to which it sealed, creating an inwardly directed flap. On a surface of the unattached layer of plastic facing the gasket are provided two spaced apart longitudinal strips of adhesive which cause engagement between the layer of plastic and the gasket flap. Thus, if product within the bag moves toward the seal end of the bag, it rests between the gasket flap and the layer of plastic to which it is heat sealed, without directly resting against the area of closure and compromising effectiveness thereof.

REFERENCES:
patent: 3613874 (1971-10-01), Miller
patent: 4355494 (1982-10-01), Tilman
patent: 4468811 (1984-08-01), Shaw
patent: 4484352 (1984-11-01), Katzin
patent: 4502599 (1985-03-01), Perecman
patent: 4892414 (1990-01-01), Ausnit
patent: 4932791 (1990-06-01), Vetter
patent: 4986673 (1991-01-01), Bell
patent: 5077064 (1991-12-01), Hustad et al.
patent: 5121997 (1992-06-01), La Pierre et al.
patent: 5224779 (1993-07-01), Thompson et al.

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