Patent DE-3479009-D1 (DE)
Title: Deep-drawable films and shaped bodies for vehicle interiors made from these films
Inventor: LANDLER JOSEF
IPC: B60R21/04
Filed: 1984-11-02
Granted: 1989-08-24
Abstract: 1. Films, in particular deep-drawable film, for the interiors of motor vehicules and shaped bodies or parts of shaped bodies for the interior of motor vehicles produced therefrom, consisting of deep-drawable, non-foamable composite films having a thickness of 500 mu m-1,400 mu m, preferably 600 mu m-1,200 mu m, which are laminated and constructed in the form of two layers or multiple layers, consisting of one more softener-free or low-softener lower films made from mixtures of polyvinyl chloride (PVC), acrylonitrile-butadiene copolymers (ABS) and a plasticiser on the basis of a plasticising high polymer having polar groups which has a molecular weight of more than 10,000, preferably more than 30,000, and is compatible with polyvinyl chloride or forms a phase with polyvinyl chloride, or mixtures of polyvinyl chloride (PVC) and acrylonitrile-butadiene copolymers (ABS) having a PVC-ABC content of more than 40 % weight, preferably more than 50 % weight (relative to 100 parts by weight of the artificial resin mixture for the lower film) with another artificial resin, preferably an acrylonitrile copolymer or an artificial resin mixture on the basis of acrylonitrile copolymer, and also a plasticiser on the basis of a plasticising high polymer having polar groups which has a molecular weight of more than 10,000, preferably more than 30,000, and is compatible with polyvinyl chloride or forms a phase with polyvinyl chloride, and a softener-free or low-softener upper film having a thickness of 100-500 mu m, preferably 120-200 mu n, made of polyvinyl chloride and a plasticiser on the basis of a plasticising high polymer having polar groups which has a molecular weight of more than 10,000, preferably more than 30,000, and is compatible with polyvinyl chloride or forms a phase with polyvinyl chloride, or mixtures of polyvinyl chloride with another arficial resin, preferably an acrylonitrile copolymer or an artificial resin mixture on the basis or acrylonitrile copolymer and also a plasticiser on the basis of a plasticising high polymer having polar groups which has a molecular weight or more than 10,000, preferably more than 30,000, and is compatible with polyvinyl chloride or forms a phase with polyvinyl chloride, whereby ethylene-vinylacetate copolymer having polar groups (EVA) and a vinylacetate content of 60-80 % weight, olefinic terpolymers with statistically distributed acetate and carbon monoxide groups or polycaprolactone having polar groups (PCL) as platicising high polymer having polar groups which have a molecular weight of more than 10,000 preferably more than 30,000, and are compatible with polyvinyl chloride or form a phase with polyvinyl chloride, is used, characterized in that the plasticiser consists of a mixture of the plasticising high polymers with at least one aromatic polycarboxylic acid ester, preferably trimellitic acid ester, in the ratio of aromatic polycarboxylic acid ester to plasticising high polymer of 8:2 to 0.1:10, preferably of 3:2 to 2:3.