Transparent, weather-resistant barrier film with improved barrier action and firmly properties scratching

摘要

The present invention relates to the preparation of a transparent, weather-resistant barrier film by the lamination, extrusion lamina fraction (adhesive -, enamel - or hot melt adhesive lamination) or extrusion coating. The film may also contain a scratch-resistant coating. For this purpose, two or more transparent films composites, each consisting of two outer polyolefin - or polyester layers, each of which is internally covered inorganically and with the inorganic layer on the inside are bonded to one another, connected to each other. This composite is with a weather-resistant, transparent film (e.g, pmma or pmma - polyolefin - coextrudate or pmma - polyester - coextrudate) laminated. The inorganic oxide layers have the property of a high optical transparency and at the same time good barrier against water vapor and oxygen, while the pmma - layer, brings about the weathering stability.