Melt extruded and stretched self-supporting polyester sheet coated on one or both sides with an adhesion aid layer, method for producing the sheet, and adhesion aid layer

摘要

A melt-extruded, oriented, self-supporting polyester film which is coated on one or both sides with an adhesion-promotion coating has the characterising features that the adhesion-promotion coating is essentially a copolymer comprising a self-curing carboxy-functional polymer A) which additionally contains epoxy groups, and at least one copolymerisable alpha , beta -olefinically unsaturated monomer B).