| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyethylene terephthalate resin film roll which is excellent in film-passing properties over the whole length of the roll in a heat treatment step in a post-processing and very high in transparency, and further is excellent in slip characteristics and adhesion. SOLUTION: The film roll is obtained by coating at least one side of the film base material having substantially no particle with a coating liquid containing a urethane resin and particles, drying, and thereafter stretching at least in one direction while winding to take up. Further, when total 10 sample-cutting out parts are provided at an equal distance from the end of winding to the beginning of winding of the film, it is so adjusted at each sample-cutting out part that all HS150 values of both right and left ends become within a predetermined range, and that differences between HS150 values of both right and left ends become within a predetermined range. Moreover, all HS150 fluctuating values of both right and left ends in the longitudinal direction are adjusted to become within a predetermined range. COPYRIGHT: (C)2008,JPO&INPIT |
