| 摘要 |
PURPOSE:To obtain the titled material having the good bag making property and the improved packaging workability, without generating any curling of the titled material by inserting a film layer composed of a thermoplastic resin film having light reflection property between the thermoplastic resin film having a light absorptive property and a flexible sheet layer. CONSTITUTION:The film layer 2a composed of the thermoplastic resin having the light reflection property is a shade film layer having the light reflection property which is formed by adding a shade substance having the light reflection property to the thermoplastic resin, and the thermoplastic resin film layer 3a having the light absorptive property is the shade film layer having the light absorptive property which is formed by adding the shade substance having the light absorptive property to the thermoplastic resin. The film layer 4a is formed by coextruding the film layers 2a and 3a. As the flexible sheet layer 1 is laminated on the surface of the film layer 2a side of the layer 4a, the curling of the titled material does not generate, even in case of making the titled material to a thin layer. |
