| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester film of easy lubricating properties, easy bonding properties and antistatic properties and also provided with durability under the high temperature and high humidity conditions. SOLUTION: Polyester resin B and a water-soluble and/or water-dispersible resin are laminated successively on one face of polyester resin A in a composite film, and the relation of melting energyΔHA of resin A with melting energyΔHB of resin B isΔHA>ΔHB, and water-dispersible and/or water-soluble polyester containing inactive particles is not a main component in the water-soluble and/or water-dispersible resin. |
