Biaxially oriented polyolefing film having improved surface properties
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United States of America Patent
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Nov 2, 2010
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app pub date -
Oct 31, 2006
filing date -
Nov 3, 2005
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Abstract
The invention relates to a method for raising the surface tension of biaxially-stretched films made of thermoplastic polymers. According to the method, a film is first treated on a surface by means of an atmospheric pressure plasma before being stretched transversally or simultaneously across the width thereof, and the film is additional a subjected to a second treatment by means of a corona or flame after being stretched transversally or simultaneously, the second treatment being done on the same surface which has already been plasma-treated.
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