Uv and light protective film

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 5/18 (2006.01) F16L 55/162 (2006.01)

Patent

CA 2746917

The present invention relates to an at least contact transparent single layer or multilayer film absorbing and/or reflecting UV radiation and short-wavelength visible light, comprising at least one layer based on at least one optionally modified thermoplastic olefin homo- or co-polymer, comprising a combination of at least one organic or inorganic colored pigment or dye absorbing and/or reflecting short- wavelength visible light, and of at least one organic or inorganic compound absorbing and/or reflecting the UV radiation, and to the use of said film as a protective film against the effects of UV radiation and short-wavelength visible light, and a sewer cleaning system comprising said multilayer film as an external hose film and an inner, multilayer plastic film, and an impregnated UV-curable carrier material present between the two hose films.

La présente invention concerne une feuille monocouche ou multicouche, absorbant et/ou réfléchissant la lumière visible de courtes longueurs d'onde et le rayonnement UV, au moins transparente par contact, comprenant au moins une couche à base d'au moins un homopolymère ou copolymère oléfinique thermoplastique éventuellement modifié contenant une combinaison d'au moins un pigment ou colorant organique ou inorganique absorbant et/ou réfléchissant la lumière visible de courtes longueurs d'onde et d'au moins un composé organique ou inorganique absorbant et/ou réfléchissant le rayonnement UV. L'invention concerne également l'utilisation de cette feuille comme feuille de protection contre l'effet du rayonnement UV et de la lumière visible de courtes longueurs d'onde et un système d'assainissement de canal comprenant cette feuille multicouche comme feuille tubulaire extérieure, une feuille plastique multicouche intérieure et un matériau de support imprégné, durcissable par rayonnement UV, situé entre les deux feuilles tubulaires.

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