Zippered bags and method of forming the same

Details Zippered bags and method of forming the same Zippered bags and method of forming the same

1992-08-04

1994-01-04

Shoap, Allan N.

Flexible bags

With closure

Independent closures for single access opening

383 63, 383 64, 383120, B65D 3324

Patent

active

052754910

ABSTRACT:
A bag such as gusset bag or flat bag comprises a tubular bag body having a pair of opposing flat portions constituting front and back side portions of the bag body and side portions, a zipper element mounted on inner surfaces of the exposed inner surface portions of the flat portions and the side portions, and a fused seal portion formed at an end opening portion of the bag body. The exposed inner surface portions are formed by folding outwardly portions of the flat portions and the side portions near the end opening of the bag body, for example, by cutting the bag body along the lines connecting the flat portions and the side portions of the bag body and bending the cut open portions outwardly along the predetermined base line. On the exposed inner surfaces, are mounted male and female members constituting the zipper element when mated, and after the mounting of the zipper element, the end opening is closed by engaging the male member with the female member as the zipper element and the end opening is fused to seal the end opening of the bag body and portions of the front and back portions near the cuts.

REFERENCES:
patent: 2457422 (1948-12-01), Warner
patent: 3275053 (1966-09-01), Kabana
patent: 4655862 (1987-04-01), Christoff et al.
patent: 4705174 (1987-11-01), Goglio
patent: 4736450 (1988-04-01), Van Erden et al.
patent: 4759642 (1988-07-01), Van Erden et al.
patent: 4844759 (1989-07-01), Boeckmann
patent: 4909017 (1990-03-01), McMahon et al.
patent: 4913561 (1990-04-01), Beer
patent: 5035517 (1991-07-01), Edelman
patent: 5048692 (1991-09-01), Handler et al.

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