Patent ID: 8025758

Claim:
A heat-sealable coating system in the form of a film-forming dispersion and suitable for sealing different kinds of substrates, comprising: polymer types, A, B, AB, and C optionally the polymer types D or D A , and an organic solvent system L, wherein polymer type A is an olefin polymer or olefin copolymer, polymer type B is a (meth)acrylate copolymer containing standard (meth)acrylates and in total up to 15% by weight of methacrylic acid and/or acrylic acid and/or another polymerizable acid, relative to polymer type B, polymer type AB is a graft polymer of polymer type A and polymer type B, and polymer type C is a polyester or a polyester mixture; optionally there is also an addition of polymer type D which is polyvinyl chloride or polymer type D A which is a polyamide, and the amount of polymer type A is between 15% and 65% by weight, the amount of polymer type B is between 15% and 65% by weight, the amount of polymer type AB is between 15% and 70% by weight, the amount of polymer type C is between 5% and 50% by weight, the amount of polymer type D is between 0% and 10% by weight, the amount of polymer type D A is between 0% and 10% by weight, based on the total mass of the polymer types A, B, AB, C, D, and D A , and the mass ratio of the total of polymer types A, B, AB, C, D and D A to the mass of the solvent or solvent mixture L is between 5:1 and 1:5.