Decorative sheet material with chlorinated polyolefin...

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 37/00 (2006.01) B29C 45/14 (2006.01) B29C 51/16 (2006.01) B32B 27/08 (2006.01) B60R 13/00 (2006.01) B60R 13/04 (2006.01) C09J 123/28 (2006.01) B29C 51/08 (2006.01) B29C 51/14 (2006.01)

Patent

CA 2360504

The flexible, weatherable decorative sheet material provided by the present invention comprises a thermoformable decorative paint film having an inner surface and a weatherable outer surface suitable for forming an exterior finish for a part, such as an automobile body part. The decorative sheet material includes an adhesive layer overlying the inner surface of the decorative paint film, wherein the adhesive layer comprises a chlorinated polypropylene component and a chlorinated polyolefin component. The chlorinated polypropylene component has a peel strength of at least about 0.8 lbs./in. at 100 ~C and the chlorinated polyolefin component has a peel strength of at least about 5 lbs./in. at room temperature. The two chlorinated components have similar chlorine contents, such as between about 20 to about 40 weight percent chlorine. A method of constructing the decorative sheet material and a composite shaped part including the decorative sheet material are also provided.

L'invention concerne un matériau décoratif en feuille, souple et résistant aux intempéries, qui comporte un film de peinture décoratif et thermoformable possédant une surface interne et une surface externe résistante aux intempéries et susceptible de former une couche de finition extérieure sur une pièce, telle qu'une pièce de carrosserie automobile. Ce matériau en feuille comporte une couche adhésive recouvrant le film de peinture décoratif et contenant un composant polypropylène chloré et un composant polyoléfine chloré. Ledit composant polypropylène chloré possède une résistance à la séparation supérieure ou égale à environ 0,8 livre/pouce à 100 ·C et le composant polyoléfine chloré possède une résistance à la séparation supérieure ou égale à 5 livres/pouce environ à température ambiante. Les deux composants chlorés ont une teneur en chlore identique, par exemple une teneur comprise entre 20 et 40 % en poids de chlore. L'invention se rapporte également à une méthode d'élaboration dudit matériau décoratif en feuille et d'une pièce façonnée composite recouverte dudit matériau décoratif en feuille.

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