PROCESS FOR APPLYING A COATED OR UNCOATED FILM ON A LENS SUBSTRATE.

摘要

A process for applying a coated or uncoated film onto a surface of a lens substrate which comprises the steps of : providing a liquid hot melt adhesive (HMA) composition comprising: a HMA base polymer and a polymerizable monomer or oligomer applying the liquid HMA composition onto either the surface of a film or a lens substrate drying the applied liquidHMA composition moving the film and the lens substrate relatively to each other to bring them into contact applying pressure on the film; heating to reach a Tmax process Temperature at or above the glass transition temperature (Tg), the monomers or oligomers being liquid at the Tmax process temperature and polymerizing the monomers or oligomers while maintaining pressure and heating.