Heat-sealable coating system suitable for the sealing of various types of substrates

Abstract

The present invention is directed to a heat-sealable coating system suitable for the sealing of various types of substrates, comprising a film-forming dispersion, comprising a polyester or polyester mixture as polymer type A, a poly(meth)acrylate as polymer type B, a graft copolymer of polymer type A and polymer type B as polymer type AB, a polyolefin or a polyolefin mixture as polymer type C, and a graft copolymer as polymer type CD, composed of polymer type C and of a poly(meth)acrylate as polymer type D, wherein said dispersion comprises of from 30% to 60% by weight of ethyl acetate based on the total weight of the dispersion, and wherein said dispersion comprises of from 20% to 50% by weight of polymer type A, from 10% to 20% by weight by weight of polymer type B, from 10% to 20% by weight of polymer type AB, from 5% to 25% by weight by weight of polymer type C, and from 15 to 35% by weight by weight of polymer type CD, based in each case on the total mass of the polymer types A, B, C, AB, and CD, and to a process for the sealing of various types of substrates, wherein the foil is coated with a coating system according to the invention.

Dependencies are inferred from the claim text.