COMPOSITE POLYESTER FILM HAVING IMPROVED ADHESIVE FORCE AND MANUFACTURE THEREOF

摘要

Process for improving the adhesiveness of crystalline or semicrystalline polyester films to final application coatings such as those applied to manufacture films for packaging or graphic arts, which consists in depositing by coextrusion onto the polyester film a mixture of a sulphonated copolyester and of an unsulphonated crystallisable polyester. …The invention also relates to the composite films thus obtained.