Composition of a weatherproof roofing material

Details Composition of a weatherproof roofing material Composition of a weatherproof roofing material

B - Operations, Transporting

32

B

B32B 27/08 (2006.01) B32B 27/28 (2006.01) B32B 27/30 (2006.01) E04D 1/22 (2006.01) E04D 1/26 (2006.01) E04D 1/28 (2006.01) E04D 3/32 (2006.01) E04D 3/35 (2006.01)

Patent

CA 2422628

A novel composition of materials that can be extruded into sheets to form panels to create a roofing system wherein the panels are formed to interlock with like panels in order to provide a substantailly weatherproof covering on a roof. The sheet member has a top layer made of ASA (Acrylonitrile/Styrene/Acrylate polymer) and a bottom layer made of PVC (polyvinylchloride). The two layers are extruded and bonded or preferably coextruded. Then the bonded materials are thermoformed to resemble more popular types of roof coverings such as shake or shingles or tiles.

L'invention concerne une nouvelle composition d'un matériau pouvant être extrudé en feuilles afin de former des panneaux pour revêtement de toitures. Selon cette invention, les panneaux sont prévus pour s'emboîter avec des panneaux similaires afin de constituer un revêtement de toiture sensiblement étanche. Ladite feuille présente une couche supérieure en ASA (polymère acrylonitrile/styrène/acrylester) et une couche inférieure en PVC (polychlorure de vinyle). Ces deux couches sont extrudées et liées ou de préférence coextrudées. Les matériaux liés sont ensuite thermoformés afin de ressembler à des revêtements de toiture plus courants tels que des tuiles, des bardeaux ou des bardeaux de fente.

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