Method for producing a thick polymer film on a substrate

Abstract

A method for producing a polymer film of high thickness on a substrate including the following steps: a) forming a first thermoplastic polymer film on a first substrate, b) forming a second thermoplastic polymer film on a second substrate including a support substrate covered by an anti-adherent layer, c) bonding the second thermoplastic polymer film to the first thermoplastic polymer film, by thermocompression, by applying a creep temperature higher than the glass transition temperature of the first thermoplastic polymer film and of the second thermoplastic polymer film, whereby a third thermoplastic polymer film is obtained, d) separating the first substrate from the second substrate, the third thermoplastic polymer film separating from the anti-adherent layer and remaining bonded to the first substrate.

Dependencies are inferred from the claim text.