Method of laminating a functional film onto an optical article and optical article
AssigneeEssilor International
InventorYouval Katzman
Life of this patent
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Abstract
This method of laminating a functional film onto an optical article includes: thermoforming the functional film so as to provide the functional film with a predetermined target curvature based on a curvature of a face of the optical article on which the functional film is to be applied; applying the functional film onto that face of the optical article; pressing the functional film against that face of the optical article so as to adhere the functional film to that face of the optical article. This method further includes heating the functional film at at least one predetermined temperature after the applying, so that the functional film conforms to the curvature of that face of the optical article.
Claims17
A method of laminating a functional film onto an optical article, comprising:
- thermoforming said functional film so as to provide said functional film with a predetermined target curvature based on a curvature of a face of said optical article on which said functional film is to be applied;
- applying said functional film onto said face of said optical article;
- pressing said functional film against said face of said optical article so as to adhere said functional film to said face of said optical article by a pressure sensitive adhesive;
- wherein said method further comprises heating said functional film at at least one predetermined temperature after said applying, so that said functional film conforms to the curvature of said face of said optical article;
- wherein said heating is carried out in accordance with a predetermined temperature profile;
- wherein said predetermined temperature profile comprises a gradual heating phase and a subsequent cooling phase;
- and
- wherein a predetermined pressure is applied to said functional film during said cooling phase.
Dependencies are inferred from the claim text.