abstract |
The invention relates to composite films consisting of a semi-crystalline polyester support film free of charge and of roughness Ra less than or equal to 0.01 mm, carrying on at least one of its faces a coating based on a modified polymer obtained by polymerization of one or more acrylic monomers in the presence of a sulfonated copolyester dissipatable in water. The composite films of the invention are very particularly suitable as a support for thin magnetic layers. |