| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a biodegradable sealant film suitable to give heat seal strength by laminating a biaxially stretched polylactic acid film and other films. <P>SOLUTION: A multilayer film comprises: a first layer (I) including 80-99 wt.% of an aliphatic polyester copolymer (A) consisting of an aliphatic or alicyclic dicarboxylic acid component (a1), an aliphatic or alicyclic dihydroxy compound component (a2), and a bifunctional aliphatic hydroxycarboxylic acid component (a3) and 20-1 wt.% of a polylactic acid (B) (the sum total of (A) and (B) is 100 wt.%); and the second layer (II) including 1-20 wt.% of an aliphatic polyester copolymer (A) consisting of an aliphatic or alicyclic dicarboxylic acid component (a1), an aliphatic or alicyclic dihydroxy compound component (a2), and a bifunctional aliphatic hydroxycarboxylic acid component (a3) and 99-80 wt.% of a polylactic acid (B) (the sum total of (A) and (B) is 100 wt.%). <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
