abstract |
Process for obtaining composite films consisting of a polyester support film comprising on at least one of its faces a layer of olefin polymer, consisting in depositing by extrusion-coating a film of said olefin polymer on at least one face of a polyester support film having a planar orientation coefficient Δp greater than or equal to 165 x 10⁻³ and a cross shrinkage rate less than or equal to 2.7% at 200 ° C. |