| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated film excellent in heat resistance, appearance, and hard to release even if treating at a high temperature. SOLUTION: The laminated film comprising an outer layer composed of a polyester based resin as a principal constituent, an inner layer composed of a thermoplastic resin as a principal constituent, and an adhesive layer composed of an adhesive resin as a principal constituent disposed between the outer layer and the inner layer, has an overlapped part having a width of 2-7 mm formed on the laminated film by sealing an outer layer surface of one end side in the direction of drawing with an inner or outer layer surface of another side in the direction of drawing so as to be parallel with the direction of drawing, wherein a slipped width between the end face of the outer layer sealed at the overlapped part or the end face of the outer layer and the adhesive layer and the end face of the adhesive layer and the inner layer or the end face of the inner layer is not greater than 5% of the overlapped width of the overlapped part when returned to the room temperature after heat-treatment at 90°C. COPYRIGHT: (C)2009,JPO&INPIT |
