High-strength film of polyhydroxyalkanoic acid and process for producing the same
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United States of America Patent
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Issued Date -
Mar 16, 2006
app pub date -
Apr 25, 2003
filing date -
Apr 25, 2002
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a process for producing a film of polyhydroxyalkanoic acid, comprising: partially melting and hot drawing an unoriented polyhydroxyalkanoic acid film; and further drawing the obtained hot-drawn film to obtain a two-stage drawn film. The present invention provides a PHA film having sufficient strength and flexibility, and having biodegradability and biocompatibility, and a process for producing the film easily and with good reproducibility.
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