To provide a heat-sealable film excellent in oxygen barrier properties, having the preservability, storage properties, etc. of content, further having biodegradability, excellent in discarding treatment properties or the like and having extremely useful barrier properties.
The heat-sealable film A comprises a multilayered laminated resin film having at least five layers formed by the co-extrusion of a biodegradable resin layer 1 composed of a resin composition based on a biodegradable resin, an adhesive resin layer 2, a barrier resin layer 3, an adhesive resin layer 2' and a biodegradable resin layer 1' comprising the resin composition based on the biodegradable resin in this order. Further, the biodegradable resin layer comprises a resin composition based on a mixed resin obtained by kneading 65-95 pts.wt. of a polylactic resin and 5-35 pts.wt. of a softening modifier. Furthermore, the barrier resin layer 3 is composed of a barrier resin composition based on an ethylene/vinyl alcohol copolymer.
COPYRIGHT: (C)2008,JPO&INPIT
大曽根 聡
三田 浩三
Keiko Fukamachi
Hideo Ito
Naoki Goto
Yusuke Ito
Hideyuki Tateishi