Claims
- 1. A film comprising a uniaxially or biaxially stretched minute-cellular polyester film having an apparent specific gravity in the range of 0.4 to 1.3 and an opacifying power of not less than 0.2, and a coating applied to either or both of the surfaces of said polyester film, said coating comprising at least one compound selected from the group consisting of thermoplastic polyesters soluble in organic solvents; water-dispersible thermoplastic polyesters containing sulfonates; alkyd type polyesters; acryl modified polyesters; polyurethane resins soluble in organic solvents or dispersible in water; polyisocyanate compounds; terminal-blocked polyurethane resins; vinyl type resins soluble in organic solvents or dispersible in water; epoxy type resins; silicon type resins; urea type resins; and melamine type resins.
- 2. The film according to claim 1, wherein said minute-cellular polyester film comprises a polyester comprising not less than 70 mol % of at least one constitutional repeating unit selected from the group consisting of ethylene terephthalate unit, ethylene-2,6-naphthalate unit and butylene terephthalate unit and having an intrinsic viscosity of not less than 4, and 3 to 40 wt % of a crystalline polypropylene homopolymer comprising at least 95 mol % of propylene unit and having a melt flow index of 0.2 to 120.
- 3. The film according to claim 1 or 2, wherein said coating contains 0.01 to 10% by weight, based on the solid component of said coating, of at least one surfactant selected from the group consisting of anionic surfactants; cationic surfactants, amphoteric surfactants; and nonionic surfactants.
Priority Claims (2)
Number |
Date |
Country |
Kind |
62-25245 |
Feb 1987 |
JPX |
|
62-176237 |
Jul 1987 |
JPX |
|
CROSS-REFERENCE TO RELATED APPLICATION
The present application is a continuation-in-part of an international application designating the U.S. Pat. No. PCT/JP No. 88/00110 filed Feb. 5, 1988.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3755499 |
Heijo et al. |
Aug 1973 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
50-28459 |
Sep 1975 |
JPX |