Transparente Barrierefolie und Verfahren zum Herstellen derselben

(A1) Die Erfindung betrifft eine transparente Barrierefolie, umfassend eine transparente thermoplastische Folie und mindestens eine Permeationssperrschicht, wobei die Permeationssperrschicht aus einer chemischen Verbindung der Elemente Zink, Zinn und Sauerstoff besteht und der Masseanteil von Zink 5% bis 70% betraegt. Des Weiteren betrifft die Erfindung ein Verfahren zum Herstellen einer solchen Barrierefolie.

DE 102007019994 A1 UPAB: 20081208 NOVELTY - The transparent barrier foil useful as protective film for packaging food, comprises a transparent thermoplastic film, permeable barrier layer with a thickness of 50-300 nm, an electrically conductive layer having a specific resistance of less than 2x 10-3 Omega cm, and a layer, which consists of element of silicon and carbon (1-10 mass percentage). The barrier layer consists of zinc (5-70 mass percentage), tin and oxygen and has a carbon content of 5 mass percentage on the side turned to the thermoplastic film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a procedure for the production of transparent barrier foil. USE - Transparent barrier foil useful as protective film for packaging food. ADVANTAGE - The transparent barrier foil has good barrier properties against oxygen and water vapor, good flexibility and high transparency for visible light spectral range.