Patent ID: 8562781
Filing Date: 2013-10-22
Classification: B29D,C09J,Y10T

Abstract:
1. A method for treating an optical lens, comprising: providing an optical lens coated on at least one main surface thereof with a hydrophobic external coating, an oleophobic external coating, or a hydrophobic and oleophobic external coating; forming on at least part of the hydrophobic external coating, the oleophobic external coating, or the hydrophobic and oleophobic external coating of the optical lens a temporary adhesive composite film, comprising a pre-formed film, one main surface of which adheres to a pressure-sensitive adhesive layer, the adhesive layer directly contacting the hydrophobic coating, the oleophobic coating, or the hydrophobic and oleophobic coating; recovering the optical lens comprising, in direct contact with at least part of the hydrophobic coating, the oleophobic coating, or the hydrophobic and oleophobic coating, the temporary adhesive composite film adhering through the pressure-sensitive adhesive layer to the coated lens surface; wherein the pre-formed film has a modulus of elasticity in tension E′ that is higher than or equal to 4450 MPa and a rupture stress of the temporary adhesive composite film bonded to a polycarbonate specimen coated with a fluorinated silane layer, measured under tensile stress in accordance with shear strength evaluation standard NF EN 1465, is higher than or equal to 0.05 MPa.