Zippered closure for packages

Details Zippered closure for packages Zippered closure for packages

1990-02-23

1991-11-12

Brittain, James R.

Buckles, buttons, clasps, etc.

Bag fasteners

Resilient slot bag tie

24587, 156 66, B65D 554

Patent

active

050636391

ABSTRACT:
Zippered material for packages comprising a zipper strip having longitudinally extending complementary reclosable interlockable zipper profiles with a web separating the profiles. In one aspect, the strip is notched out to the web from opposite sides at package section intervals and with limited respective areas of the web providing links connecting the sections of the strip at the notches, the links being sealed and flattened onto package making sheet material. In another aspect, the web and the material have matching lines of weakening, the web is hermetically bonded to the material and at least the line of weakening of the web is hermetically sealed to prevent leakage through the lines of weakening, but enabling tear-open separation along the lines of weakening.

REFERENCES:
patent: 4191230 (1980-03-01), Ausnit
patent: 4246288 (1981-01-01), Sanborn, Jr.
patent: 4655862 (1987-04-01), Christoff et al.
patent: 4759642 (1988-07-01), Van Erden et al.
patent: 4846585 (1989-07-01), Boeckmann et al.
patent: 4896775 (1990-01-01), Boeckmann et al.
patent: 4925316 (1990-05-01), Van Erden et al.

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