| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heat-shrinkable film causing no delamination while laminating different kinds of resins. <P>SOLUTION: The heat-shrinkable film has a resin layer (layer A) and a resin layer (layer B) each adjacently laminated and satisfies all of the following (1)-(5): (1) the layers A and B are composed mainly of one resin selected from the group consisting of polyester resins, polystyrene resins and polyolefinic resins; (2) the layers A and B are composed mainly of different resins; (3) the adhesive strength of the layers A and B is 2.5 N/15 mm or less; (4) a heat shrinkage in a main orientation direction of the heat-shrinkable film at 80°C is 20% or more; and (5) at least one of the absolute value of the difference of the heat shrinkages of the layers A and B at 80°C, the absolute value of the difference of the heat shrinkages of the layers A and B at 90°C, and the absolute value of the difference of the heat shrinkages of the layers A and B at 98°C, is 10% or less. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
