| 摘要 |
PURPOSE:To achieve stable processability excellent in scoring properties due to a heated blade and the enhancement of bending properties and the appearance of a product after scoring by constituting a laminated film of two or more kinds of thermoplastic resin layers different in Vicat softening temp. or different in the penetration of a needle like pressure element at the time of the measurement of the Vicat softening temp. CONSTITUTION:A laminated film excellent in scoring properties due to a heated blade consists of two or more kinds of thermoplastic resin layers different in Vicat softening temp. or different in the penetration of a needle like pressure element at the time of the measurement of the Vicat softening temp. That is, one of the resin layers is a biaxially stretched polyethylene terephthalate film and the other one of them is a film containing polyethylene terephthalate as a main constituent and having voids due to stretching. Herein, the Vicat softening point and Vicat pentration resistance of the biaxially stretched film are higher than those of the film having voids and, in the case of the low softening point and penetration between the laminated films, the cutting and scoring inferiority of the film is generated and, in the case of high, there is no special problem. |
