Fins and profiles for plastic bags
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United States of America Patent
Stats
-
Mar 30, 2004
Grant Date -
Jun 26, 2003
app pub date -
Sep 7, 2001
filing date -
Sep 7, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A fastener for a plastic bag comprising a male track including a male profile and an optional first fin extending from the male profile and a female track including a female profile and an optional second fin extending from the female profile. At least one of the first and second fins and/or one of the male and female profiles comprises a cyclic olefin copolymer or a combination of a cyclic olefin copolymer and one or more additional polymers. The cyclic olefin copolymer has a glass transition temperature, T.sub.g, of greater than about 20.degree. C. as determined by ASTM D3418. The cyclic olefin copolymer may comprise from about 10 to about 90 mol. % norbornene. The additional polymer is selected from a polyolefinic resin, an engineering resin, and a combination thereof.
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