Substantially leakproof zipper closure for bags and method

Details Substantially leakproof zipper closure for bags and method Substantially leakproof zipper closure for bags and method

1984-12-20

1986-10-28

Garbe, Stephen P.

Flexible bags

With closure

Including separate closure element for straddling bag mouth

383 61, 383 81, 493212, 493213, 493214, B65D 3316

Patent

active

046203206

ABSTRACT:
A hood-like top closure on a bag top has end portions extending beyond opposite sides of the bag and the end portions are closed against leakage. The top closure may have a zipper separably connecting a pair of attachment flanges one of which extends along and is secured to one face of the bag top along the top opening and the other of which flanges is secured to a second face of the bag top along the opening. More particularly, the end portions of the attachment flanges are adhesively bonded so as to prevent sifting or leakage therethrough. A method of and apparatus for making the bag are also provided.

REFERENCES:
patent: 2527073 (1950-10-01), Port
patent: 2527074 (1950-10-01), Port
patent: 2978164 (1961-04-01), Williams et al.
patent: 3000415 (1961-09-01), Kritchever
patent: 3030003 (1962-04-01), Schanzle
patent: 3141601 (1964-07-01), Ayres et al.
patent: 3243099 (1966-03-01), Winegard
patent: 4241865 (1980-12-01), Ferrell
patent: 4348440 (1982-09-01), Kriozere

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