Exterior window film

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/36 (2006.01) C03C 17/32 (2006.01) C03C 17/42 (2006.01) C08J 7/04 (2006.01)

Patent

CA 2711036

A transparent exterior window film composite (10) comprising a base sheet material (11) having an outer PET (polyethylene terephthalate) film layer (12) which has been surface treated to elevate adhesion thereto and which is impregnated with an ultra violet light absorber (UVA), the treated surface being coated with a UV stabilized acrylic polymer or co-polymer un-dercoat (14) having a UV stabilized hard coat layer (15) thereon formed from at least one aliphatic urethane acrylate oligomer and at least one multifunctional acrylate monomer, the undercoat layer having a thickness which is at least as thick as the hard coat.

L'invention porte sur un composite (10) de film transparent pour fenêtre extérieure, qui comprend une matière en feuille de base (11) ayant une couche extérieure (12) de film de PET (poly(téréphtalate d'éthylène)) qui a été traitée en surface pour augmenter l'adhérence à celle-ci et qui est imprégnée par un agent absorbant la lumière ultraviolette (UVA), la surface traitée étant revêtue par une sous-couche (14) de polymère ou copolymère acrylique stabilisé vis-à-vis des UV ayant une couche de revêtement dure stabilisée vis-à-vis des UV (15) sur celle-ci formée à partir d'au moins un oligomère d'acrylate-uréthane aliphatique et d'au moins un monomère acrylate multifonctionnel, la sous-couche ayant une épaisseur qui est au moins aussi grande que la couche dure.

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