Partially zippered pouch and machine for making same

Details Partially zippered pouch and machine for making same Partially zippered pouch and machine for making same

1998-04-07

1999-08-24

Garbe, Stephen P.

Flexible bags

Bag closure secured by a releasable or frangible bond

Having another independent closure for same access opening

383 61, 383 63, 383 94, 383906, B65D 3316

Patent

active

059416432

ABSTRACT:
A standard vertical form, fill and seal machine is provided with a change part that allows the marginal edges of the film to be formed into a lap or fold over seam at a location offset from the center of the flat front surface of a D-shape forming tube. The film is formed into a loop at the central portion of the rear generally cylindrical section of the forming tube and an interlocked zipper strip is fed into this loop and bonded to the inner surface of the loop. The cross seam for the bag is formed in the fore and aft direction so that it will be in the plane of the interlocked zipper strip.

REFERENCES:
patent: 4332344 (1982-06-01), Strodthoff
patent: 4787755 (1988-11-01), Branson
patent: 4953708 (1990-09-01), Beer et al.
patent: 5113555 (1992-05-01), Wilson et al.
patent: 5240112 (1993-08-01), Newbunger
patent: 5810478 (1998-09-01), LaFleur

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