Oscillating grip strip for recloseable plastic bags and method a

Details Oscillating grip strip for recloseable plastic bags and method a Oscillating grip strip for recloseable plastic bags and method a

1992-05-08

1993-11-09

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

24587, 156 66, 15624425, 383 65, 493211, 493213, B29C 4718, B31B 190

Patent

active

052599043

ABSTRACT:
A plastic bag with a recloseable zipper-type closure is formed with grip strips on its lips to ease the opening of the bags. The grip strips are extruded from a grip strip extruder which is moved relative to a movement of the zipper type profile to produce a regularly repeating pattern. The strips facilitate opening the bag even with wet or oily fingers. A method and apparatus for forming the same is also disclosed.

REFERENCES:
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patent: 3371696 (1968-03-01), Ausnit
patent: 3589958 (1971-06-01), Schrenk
patent: 3659338 (1972-05-01), McFarlane
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patent: 5009828 (1991-04-01), McCree
patent: 5067822 (1991-11-01), Wirth
patent: 5092684 (1992-03-01), Weeks
patent: 5121997 (1992-06-01), La Pierre

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