Side-gored bag having a first zipper tape with an area of increa

Flexible bags – With closure – Rib and groove

Patent

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Details

383 65, 383120, 24577, B65D 3316

Patent

active

060301236

ABSTRACT:
A side-gored bag is provided which includes: a first panel film, a second panel film; a pair of V-members forming side gussets; and a zipper device including a first zipper tape, and a second zipper tape. The upper edges of the V-members are situated so as to be downwardly displaced by a distance w from the upper edges of the first and second panel films. The first zipper tape has a first meshing rib and the first zipper tape is bonded in a horizontal position to the first panel film over an area of the panel film which extends by a distance W (wherein W>w) from the upper edge in such a manner that both the lower side of the zipper tape and the first meshing rib are situated below the upper edges of the V-members so as to cover an upper part of each V-member. The second zipper tape has a second meshing rib and the second zipper tape is bonded to the second panel film in such a manner that the second meshing rib is aligned with the first meshing rib. The side-gored bag also includes an area adjacent to the upper side of the first zipper tape, which is of an increased thickness as compared with a remaining area of the tape, and an area adjacent to the lower side of the first zipper tape, which is progressively reduced in thickness toward the lower side.

REFERENCES:
patent: 2701878 (1955-02-01), Davis
patent: 3339606 (1967-09-01), Kugler
patent: 4913561 (1990-04-01), Beer
patent: 5140727 (1992-08-01), Dais et al.
patent: 5366294 (1994-11-01), Wirth et al.
patent: 5692837 (1997-12-01), Beer

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