Oscillating grip strip for recloseable plastic bags and method and apparatus for making the same

Fermeture a glissiere pour sacs de plastique refermables et methode et appareil de fabrication connexes

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.

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