Hermetic seal for a plastic bag

Details Hermetic seal for a plastic bag Hermetic seal for a plastic bag

1995-07-05

1998-01-27

Lavinder, Jack W.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493194, 493212, 493927, 493232, 493239, B31B 190

Patent

active

057117519

ABSTRACT:
A plastic bag manufacturing method to produce bags with a removable release strip in covering relation over an adhesive deposit adjacent an upper edge of the bag rear panel, in which the height of the release strip is increased to provide continuity along the length thereof to enable urging the strip, as required during the bag manufacturing process, in a machine direction, and the lower release strip portion is notched at locations coinciding with the bag side edges so that these bag side edges are fused for their entire lengths with no inhibiting of this fusing process by the release strip being in an interposed position between the overlying upper edges of the bag front and rear panels.

REFERENCES:
patent: 3561670 (1971-02-01), Segal
patent: 4913693 (1990-04-01), Ball
patent: 4932791 (1990-06-01), Vetter
patent: 5045040 (1991-09-01), Vetter
patent: 5049118 (1991-09-01), McNabb
patent: 5273514 (1993-12-01), Kristensen

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