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OwnerJürgen Bühring, Dirk Iben +3inventors
InventorsJürgen Bühring, Dirk Iben, Roland Freudenmann, Christian Seidel, Dirk Mielke
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A multi-layer sheet material includes at least one textile substrate layer, at least one foamed layer made of polyvinyl chloride containing plasticizer, at least one cover layer made of polyvinyl chloride containing plasticizer, and at least one coating layer facing outward on the cover layer. The invention further relates to a method for producing the multi-layer sheet material and to an interior trim part made of a sheet material for a vehicle. For a reduced tendency to yellow under high-temperature aging and for greater color fastness, the polyvinyl chloride fraction in the cover layer is based at least 50 wt% on a polyvinyl chloride that was produced according to the method of suspension polymerization (S-PVC), and the composition for the cover layer comprises a calcium hydroxide stabilizer and/or a Ca/Zn stabilizer that contains 1 to 3 wt% calcium and 1 to 2 wt% zinc.
A multilayer sheet-like structure, comprising at least one textile backing layer, at least one foamed layer made of plasticized polyvinyl chloride, at least one outer layer made of plasticized polyvinyl chloride, and at least one outward-facing lacquer layer on the outer layer, wherein at least 50% by weight of the polyvinyl chloride content in the outer layer is based on a polyvinyl chloride which has been produced by the suspension polymerization process (SPVC), and the composition for the outer layer comprises a calcium hydroxide stabilizer and/or a Ca/Zn stabilizer which comprises from 1 to 3% by weight of calcium and from 1 to 2% by weight of zinc.
The multilayer sheet-like structure as claimed in claim wherein the composition for the outer layer comprises a perchlorate as further stabilizer.
Dependencies are inferred from the claim text.