| abstract |
This invention is a composite film which consists of base film C, the coating layer A on the one surface, and the coating layer B on the other surface,n n n (1) The said coating layer A is formed from the water-soluble resin or dispersible resin containing inert particle, and is a film | membrane whose center line average roughness (Ra-A) in the surface is 0.1-2 nm,n n n (2) The coating layer B is formed of 1 to 40% by weight of inert particles and a water-soluble resin or a water dispersible resin-containing composition, except that the resin-containing composition contains 5 to 85% by weight of a silicone-modified polyester resin based on the layer B. Or 1 to 30% by weight of silicone or wax,n n n (3) The said base film C is related with the low electrostatic composite polyester film characterized by the film which consists of aromatic polyester.n n n According to the present invention, it is possible to provide a composite polyester film which is useful as a base film of an electronic recording medium having excellent low charge resistance, blocking resistance and cutting resistance and excellent electron conversion characteristics and back coat adhesion. |