Polymeric Packaging Film
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United States of America Patent
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Issued Date -
Jan 8, 2009
app pub date -
Nov 14, 2005
filing date -
Nov 16, 2004
priority date (Note) -
Abandoned
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Abstract
A polymeric film has at least one surface on which chitosan has been immobilised so as to be substantially resistant to leaching and have a strong antimicrobial activity. The polymeric film may be a polyolefin film such as a biaxially orientated polypropylene film. A process immobilises chitosan on a polymeric surface so as to be resistant to leaching and have a strong antimicrobial activity by applying chitosan to a polymeric film surface which has been activated before addition of chitosan to the surface by plasma activation at atmospheric pressure.
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