| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a biodegradable laminated packaging material in which when a biodegradable resin is laminated on a paper lahyer, the resin is well molded into a film and well adhered to the paper layer. <P>SOLUTION: The paper layer (1) is made a substrate. On one surface of the paper layer (1), at least two layers of a biodegradable layer (2) of an aliphatic/aromatic copolyester resin of three components of terephthalic acid/adipic acid/1,4-butanediol which is well adherent to paper and a seal layer (3) of a blended resin obtained by kneading a mixture comprising 10-50 wt.% of a biodegradable resin comprising polylactic acid, polybutylene succinate or a starch/polycaprolactone mixture, or the aliphatic/aromatic copolyester resin and 90-50 wt.% of a biodegradable resin comprising polylactic acid, polybutylene succinate or starch/polycaprolactone mixture are laminated with the aliphatic/aromatic copolyester resin layer arranged on the paper layer side by a coextrusion method. <P>COPYRIGHT: (C)2004,JPO</p> |
