METHOD FOR TREATING A CONTACT LENS MOLD
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United States of America Patent
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Issued Date -
Jun 4, 2015
app pub date -
Dec 3, 2013
filing date -
Dec 3, 2013
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Abstract
Disclosed in this specification is a method for treating a contact lens mold surface with ultraviolet light to increase the surface's wettability. Such molds are useful in manufacturing contact lenses by disposing a reaction mixture between a concave frontcurve mold and a convex basecurve mold prior to polymerization. By adjusting the wettability of the convex and concave surfaces, as well as the wettability of the surrounding flange, the demolding of the resulting contact lens better controlled and defects are reduced.
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