Rough-surfaced polyvinyl butyral sheet and method of forming...

Details Rough-surfaced polyvinyl butyral sheet and method of forming... Rough-surfaced polyvinyl butyral sheet and method of forming...

C - Chemistry, Metallurgy

08

L

C08L 29/14 (2006.01) B29C 47/00 (2006.01) C08F 8/28 (2006.01) C08F 16/38 (2006.01) C08J 5/18 (2006.01)

Patent

CA 2170510

In preparing rough-surfaced sheet of polyvinyl butyral (PVB), a fraction of stiffly resilient particles of crosslinked PVB are present in the formulation which on exiting an extrusion die opening mechanically interfere with and roughen the surface of the sheet being formed.

L'invention concerne un procédé de préparation d'une feuille de butyral polyvinylique (PVB) rugueuse comprenant une fraction de particules peu résilientes de PVB réticulé qui, à la sortie de la matrice à extrusion, interfère mécaniquement avec la surface de la feuille en cours de formation et rend cette dernière rugueuse.

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