| 摘要 |
<p>A stretched polyester-amide film made of a polyester-amide copolymer comprising polyamide units and polyester units in the molecular chain. In dynamic viscoelastometry, the stretched film has a main dispersion peak at a temperature higher by at least 10°C than the main dispersion peak temperature for a nonoriented object made of the polyester-amide copolymer. The stretched film has biodegradability and is excellent in mechanical strength and heat resistance. It can be produced by the inflation stretching method.</p> |
