Glass-plastic composite
AssigneeCorning Incorporated
InventorsMark S. Friske, Ronald E. Johnson, Christine M. Reagan, Theresa A. Winer, Lung-Ming Wu
Life of this patent
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Abstract
A method of applying a tough, abrasion-resistant, organic film to a back surface of a thin, glass body to form a glass-plastic composite, the method comprising preheating the film to a temperature at which residual solvent and moisture are removed from the film, preheating a presshead to a pressing temperature, pressing the film and the glass together, maintaining the glass-film assembly at a controlled temperature and pressure for a period of time to form a sealed composite body, and cooling the sealed body to solidify the glass-plastic composite.
Claims27
A method of adhering a tough, abrasion-resistant, adhesive, organic film to the back surface of a thin, glass body wherein the film and the glass body are positioned adjacent each other and are pressed together to adhere the film to the glass and wherein the film contains volatile materials, the improvement comprising preheating the film to a temperature within the temperature range in which the volatile materials are volatile and for a period of time sufficient to eliminate the volatile materials from the film, preheating a presshead to facilitate heat control during pressing, pressing the film and the glass together to form a glass-plastic composite, the pressing step being performed at a pressure and an elevated temperature for an extended period of time to sufficiently soften the film to wet the glass surface with the organic adhesive and cooling the composite to the solidification temperature of the organic adhesive to solidify the organic adhesive and adhere it to the glass surface.
A method of producing a lightweight, ophthalmic lens consisting essentially of a tough, abrasion-resistant, organic, adhesive film on the back surface of a thin glass lens member, wherein the film contains volatile materials, the method comprising preheating the film to a temperature within the temperature range in which the volatile materials are volatile and for a period of time sufficient to eliminate the volatile materials from the film, preheating a presshead to facilitate heat control during pressing, pressing the film and the glass together to form a glass-plastic composite, the pressing step being performed at a pressure and an elevated temperature for an extended period of time to sufficiently soften the film to wet the glass surface with the organic adhesive, and cooling the composite to the solidification temperature of the organic adhesive to solidify the organic adhesive and adhere it to the glass surface.
Dependencies are inferred from the claim text.