| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a shrink film which can improve a dimensional stability of a label to a bottle by improving heat shrink of the film in the specific direction during shrink packaging to prevent shrink in a direction perpendicular to the direction using a resin having a specific gravity different from a PET resin, and has strength of the film itself. <P>SOLUTION: The shrink film is the laminate film 10 having a base material layer 11 and a surface layer 12 and made into a film by uniaxially stretching a laminate substantially only in a lateral direction perpendicular to a winding direction wherein the base material layer contains 35 to 60 pts.wt. of a propylene-α-olefin random copolymer having a melting point of 120 to 135°C, 30 to 35 pts.wt. of an alicyclic hydrocarbon resin-based petroleum resin, and 5 to 20 pts.wt. of a propylene-α-olefin copolymer having a melting point of 65 to 90°C; the surface layer is composed of a polypropylene-based resin; and the shrink film is obtained by uniaxially stretching the laminate film by 6 to 7 times in the lateral direction at an atmospheric temperature of 75 to 80°C. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
