| 摘要 |
The present invention is related to a system of thermoplastic polymeric sheets extruded in high-resistance PVC polymers which may be produced in large amounts, different geometries, brilliant colours and having double or triple thermoplastic layers; the thermoplastic layer includes two outer layers comprising a mixture of vinyl polychloride and styrene polymers, a middle layer which may be solid or foamy for providing more thickness, which is formed by a mixture of polycarbonates and vinyl polychloride (PVC) which results in a thermoplastic sheet with a high resistance to impact, durability, lightness and adapted to any type of cover in walls and roofs.
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