Free edge-sealed film articles

Stock material or miscellaneous articles – Structurally defined web or sheet – Edge feature

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Details

428 352, 428 357, 428516, 383107, B32B 302, B32B 2708, B32B 2732, B65D 3008

Patent

active

054458650

ABSTRACT:
Free edge-sealed film articles and a method for making such, wherein the articles comprise a plurality of film portions and contain a free edge-seal between two of such portions, with one or both of the two free edge-sealed portions consisting essentially of a plurality of layers of diverse thermoplastic materials which are so ordered that on sealing the two portions together, the layered film portion is curled toward the other of the two free edge-sealed portions.

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patent: 4511609 (1985-04-01), Craver et al.
patent: 4531997 (1985-07-01), Johnston
patent: 4643928 (1987-02-01), Kimura et al.
patent: 4988465 (1991-01-01), Lustig et al.

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