Chain bags, method and apparatus

Details Chain bags, method and apparatus Chain bags, method and apparatus

1987-01-07

1987-11-24

Little, Willis

Flexible bags

With closure

Rib and groove

383 37, 383123, 493214, 156 66, B65D 3316

Patent

active

047093986

ABSTRACT:
A bag chain structure and method of making wherein fastener strips are attached across the surface of the film at predetermined intervals with the fastener strips having a plurality of rib and grooves so that the rib and grooves interlock when the strip is folded upon itself and the film is doubled so that the lateral edges are in adjacency and are joined, cross-seals are placed across the doubled film at intervals spaced from the fastener strips to form the bottom of the bag; and tear perforations are placed in the doubled film between the bottom seal and the fastener so that individual bags can be torn off of the continuous film sheet.

REFERENCES:
patent: 3744211 (1973-07-01), Titchenal et al.
patent: 3779139 (1973-12-01), White
patent: 4355494 (1982-10-01), Tilman
patent: 4428788 (1984-01-01), Kamp
patent: 4561109 (1985-12-01), Herrington
patent: 4582549 (1986-04-01), Ferrell
patent: 4630310 (1986-12-01), Winesett
patent: 4655862 (1987-04-01), Christoff et al.

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