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Abstract

A bi-layer adhesive and a method for laminating a film onto an optical article utilizing the bi-layer adhesive are described. A method for laminating the film onto an optical article and the bi-layer adhesive for use in the method are also described. The bi-layer adhesive includes a latex adhesive layer and an HMA layer sequentially disposed on the film and dried to form a solid layer of uniform thinness throughout to provide optical quality. Various types of films may be employed to provide an optical function. Following optional pre-treatment steps, the bi-layer adhesive is coated on to the film. An optical hot press technique is used to deliver heat and pressure over a short period of time to form a functionally-enhanced optical article with high adhesive strength.

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