| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat-shrinking film having a good shrinking characteristics even on re-heating after its heat shrink-packaging, and especially in the case of being used as a binding belt of a container heated together with its content in a microwave oven, capable of showing both of a good primary processability and the crush prevention of the container jointly. <P>SOLUTION: This heat-shrinking film consisting mainly of a lactic acid-based polymer has ≥30 and <60 % shrinking rate in at least one direction on immersing it in 80°C warm water for 10 sec, and <5 MPa shrinking stress after 1 min in 80°C silicone oil. Also, the lactic acid-based polymer may have (98:2)-(85:15) or (2:98)-(15:85) constitution ratio of D-lactic acid to L-lactic acid. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
