| abstract |
The present application relates to a bright white, biaxially oriented polyester filmnat least one base layer made of polyester raw material. The base layer of thenpolyester film according to the invention additionally contains a cycloolefin copolymer (COC) innan amount of 2 to 60% by weight, a white pigment in an amount of 0.1 to 25% by weightnand optionally an optical brightener in an amount of 0 to 5 wt .-%, based on thenWeight of the base layer. The glass transition temperature of the COC should be in the rangenfrom 70 to 270 ° C. The film is particularly suitable for packaging lightnand / or air-sensitive food and beverages or for use innindustrial area, e.g. in the manufacture of stamping foils or as a label foil, ornfor image recording papers, printing sheets or magnetic recording cards ornfor processing on high-speed machines for winding, metallizing, printingnor lamination. |