| 摘要 |
PROBLEM TO BE SOLVED: To improve the luster of a print laminated body and heighten its interlaminar peel strength and peel strength irrespective of its storage temperature by a method wherein the relationship between the thickness of a heat- sensitive adherent resin layer and the total thickness of films is specified and the torsional rigidity modulus of a resin, of which the heat-sensitive adherent resin layer is made, is specified. SOLUTION: The thickness (a) of a heat-sensitive adherent resin layer and the total thickness (b) of films are set to satisfy an inequality: 0.15<=a/b<=0.75. In addition, the torsional rigidity modulus of a resin, of which the heat-sensitive adherent resin layer is made, is set to be within the range of 15-300 kgf/cm<2> . A base material film layer is a biaxially oriented polypropylene-based film layer or a biaxially oriented polyethylene terephthalate film layer. Further, as the resin, of which the heat-sensitive adherent resin layer is made, an ethylene-based copolymer and a polyester resin consisting of a dibasic component and a glycol component are exampled. The torsional rigidity modulus depends, for example in the case of the polyester resin, upon the dibasic acid component, the glycol component, an average molecular weight, a molecular weight distribution and the like. |
