Composite web for making resealable packages and reclosable...

Details Composite web for making resealable packages and reclosable... Composite web for making resealable packages and reclosable...

2005-05-24

2005-05-24

Dye, Rena (Department: 1774)

Stock material or miscellaneous articles

Structurally defined web or sheet

Edge feature

C383S063000, C383S064000, C383S069000, C053S450000, C053S451000, C053S459000

Reexamination Certificate

active

06896950

ABSTRACT:
A novel continuous web of composite packaging film for making packages having improved openable and reclosable interlocking seals, the seal having male and female portions of arrowhead shape in cross section, snap detents, and being formed transversely to the direction of film flow during package formation at line speed. The packaging film is provided at package length intervals with thermoformable strips secured thereto transversely to the running length of the film, and is fed to a modified standard vertical form, fill and seal packaging machine where the film is formed into a bag with the thermoformable strip inside in ends abutting folded facing relationship at the upper end of the bag, product deposited into the bag, the bag sealed, the reclosable interlocking seal formed, and the bag severed from the next bag being formed. The package reclosable seal provides positive auditory and tactile indications of the closing of the reclosable seal so that the consumer is assured that the package has been resealed even in the absence of visual package inspection.

REFERENCES:
patent: 4823961 (1989-04-01), Griesbach et al.
patent: 5050736 (1991-09-01), Griesbach et al.
patent: 5058761 (1991-10-01), Williams
patent: 6371644 (2002-04-01), Forman

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