Polypropylene film structure having increased life time

A structure comprising a biaxially oriented polypropylene (BOPP) film having at least one layer comprising a homopolymer of propylene which layer is in contact with an oil phase, the homopolymer of propylene having:

• a) a content of isotactic pentads in the range from 95% to 98%, and
• b) a content of ash of not more than 30 ppm, based on the total weight of the homopolymer of propylene,
• wherein the oil phase has an absorbance value of ≤0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity,
• wherein the BOPP film comprises additives selected from the group consisting of stabilisers, acid scavengers, nucleating agents and mixtures thereof, wherein the stabilisers are selected from the group consisting of 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene in an amount of from 400 to 2000 ppm and a combination of 1,3,5-trimethyl-2,4, 6-tri s(3,5-di-tert-butyl-4-hydroxybenzyl)benzene in an amount of from 400 to 2000 ppm and butylhydroxytoluene in an amount of from 100 to 1000 ppm, based on the total weight of the homopolymer of propylene.