folienbahn, especially tiefziehfähige folienbahn for kraftfahrzeuginnenräume

摘要

1. Composite sheets, capable of being deep drawn, of polyvinyl chloride, or of mixtures of acrylonitrile-butadiene-styrene copolymers (ABS) with polyvinyl chloride and if required an additional content of fillers, processing additives and/or agents for imparting flame resistance, in which the sheets are foam-backed if required on one side, characterised in that the 1. unfoamed composite sheets, capable of being deep drawn, 1.1 have a thickness of 500 mu m-1,400 mu m, 1.2 are laminated and are composed in the form of two layers or a plurality of layers, which include at least 2. a lower sheet which is free of primary or liquid softeners or which has up to less than 3% by weight primary or liquid softeners, which lower sheet consists of a 2.1 mixture of polyvinyl chloride or vinyl chloride copolymers with up to 20% by weight olefinically unsaturated monomers, acrylonitrile-butadiene-styrene copolymers (ABS) and a plasticizer on the basis of a plasticizing high polymer with polar groups, which has a molecular weight of greater than 10,000 and forms a phase with polyvinyl chloride or is compatible with polyvinyl chloride or consists of a 2.2 mixture of a) polyvinyl chloride or vinyl chloride copolymers with up to 20% by weight olefinically unsaturated monomers and b) acrylonitrile-butadiene-styrene copolymers (ABS) with a PVC-ABS content of more than 40% by weight (in relation to 100 parts by weight of the synthetic resin mixture for the lower sheet), with c) an acrylonitrile copolymer or a synthetic resin mixture on the basis of acrylonitrile copolymer and d) a plasticizer on the basis of a plasticizing high polymer with polar groups, which has a molecular weight of greater than 10,000 and forms a phase with polyvinyl chloride or is compatible with polyvinyl chloride, and 3. include an upper sheet which is free of primary or liquid softeners or which contains up to less than 3% by weight primary or liquid softeners with 3.1 a thickness of 100-500 mu m, which 3.2.1 consists of polyvinyl chloride or vinyl chloride copolymers with up to 20% by weight olefinically unsaturated monomers and a plasticizer on the basis of a plasticizing high polymer with polar groups, which has a molecular weight of greater than 10,000 and forms a phase with polyvinyl chloride or is compatible with polyvinyl chloride, or 3.2.2 consists of mixtures of polyvinyl chloride or vinyl chloride copolymers with up to 20% by weight olefinically unsaturated monomers with an acrylonitrile copolymer or a synthetic resin mixture on the basis of acrylonitrile copolymer and a plasticizer on the basis of a plasticizing high polymer with polar groups, which has a molecular weight of greater than 10,000 and forms a phase with polyvinyl chloride or is compatible with polyvinyl chloride.