Oscillating grip strip for recloseable plastic bags and method and apparatus for making the same
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United States of America Patent
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Nov 9, 1993
Grant Date -
N/A
app pub date -
May 8, 1992
filing date -
May 8, 1992
priority date (Note) -
Expired
status (Latency Note)
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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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