发明申请
US20110192552A1 Multilayer polyester film with high optical density with a total thickness of max. 60 µm with two white layers and a carbon-black containing outer layer 有权
多层聚酯薄膜,光学密度高,总厚度最大。 60μm具有两个白色层和含炭黑的外层

Multilayer polyester film with high optical density with a total thickness of max. 60 µm with two white layers and a carbon-black containing outer layer
摘要:
The invention relates to an at least three-layer, biaxially oriented polyester film with a carbon-black-filled outer layer and with two TiO2-containing layers, where a TiO2-containing layer is also an outer layer and where the thickness of the outer layers is from 4 to 15 μm, the thickness of the base layer is ≧the total of the thicknesses of the outer layers, the white outer layer comprises at least 15% by weight of TiO2, the base layer comprises at least 4% by weight of TiO2, the carbon-black-containing outer layer comprises from 3 to 15% by weight of carbon black, and the SV value of the film is at least 600, where all % by weight data are based on the weight of the respective layer, and also to a process for the production of this type of film and to the use of the film in particular in blinds, including roller blinds, Venetian blinds, or projection screens, or in displays.
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