Patent ID: 7138176

Claim:
A transparent, low-flammability, UV-resistant, biaxially oriented film made from a film forming thermoplastic and having a thickness of from 5 to 300 μm, wherein the film comprises: crystallizable thermoplastic as the principal constituent; at least one UV stabilizer; at least one flame retardant, where the UV stabilizer is thermally stable at temperatures exceeding 240° C., said oriented film has a luminous transmittance of >80% when measured according to ASTM D 1003; a surface gloss of >100 when measured at an angle of 20° according to DIN 67530; a haze of ≦20% when measured according to ASTM S 1003 and a yellowness index of ≦10 as measured in accordance with DIN 6167, wherein said film comprises flame retardant consisting of one or more organic phosphorous compounds and said film exhibits a longitudinal modulus of elasticity of greater than 3200 N/mm 2 after said film has been heat treated for 100 hours at 100° C. and said crystallizable thermoplastic consists of polyethylene terephthalate, polybutylene terephthalate or mixtures thereof.