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Method of releasing a transparent polymer material from a mold and its use in the fabrication of a transparent polymer material article such as an ophthalmic lens
Method of releasing a transparent polymer material from a mold and its use in the fabrication of a transparent polymer material article such as an ophthalmic lens
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机译:从模具释放透明聚合物材料的方法及其在制造透明聚合物材料制品如眼科镜片中的用途
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摘要
A method of releasing from the mold a transparent polymer material article formed in a cavity of a two-part mold by polymerizing a liquid polymerizable substance includes the step of uniformly heating the article in the mold to a mold release temperature in the range from Tg+20° C. to Tg+80° C., where Tg is the glass transition temperature of the transparent polymer material, without separating the article and the mold parts. An external mechanical force is applied to separate at least one of the mold parts from the article while it is at the mold release temperature.
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