HEAT-SEALING MATERIAL FOR ALUMINUM FOILS AND POLYETHYLENE TEREPHTHALATE FOILS AGAINST POLYPROPYL, POLYVINYL CHLORIDE, AND POLYSTYROL CONTAINERS

摘要

Heat-sealable coating system, suitable for sealing various substrates, contains a film-forming dispersion based on polymers of the type (A) containing a polyester (mixture), (B) comprising a (meth)acrylate homo- or/and copolymer containing standard methacrylate and/or standard acrylate and (AB), which is a graft copolymer of type (A) and (B) polymers. The amounts (wt.% with respect to total (A, B and AB) are 5-50% (A), 5-70% (B) and 5-60% (AB) and the weight ratio of total (A, B and AB) to solvent (mixture) is 5:1 to 1:5.