Biaxially stretched polyamide resin film, and process for production thereof
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United States of America Patent
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Oct 23, 2012
Grant Date -
Jan 27, 2011
app pub date -
Apr 15, 2009
filing date -
Apr 16, 2008
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Abstract
At an optional stage in the production step of a biaxially stretched film using a polyamide resin including, as a first component, nylon 6, and as a second component, a polyamide including xylylenediamine and an aliphatic dicarboxylic acid having 4 to 12 carbon atoms, the film is brought into contact with water set at 40° C. or higher and lower than 70° C. for 1 to 10 minutes and further with water set at 70° C. or higher for 1 to 10 minutes. In the film thus obtained, the content of low molecular weight compounds is 0% by mass to 0.2% by mass.
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