Invention Grant
US6071443A Method of producing lens sheet and projection screen 失效
产生透镜片和投影屏的方法

Method of producing lens sheet and projection screen
Abstract:
An object of the present invention is to provide a process for producing a lens sheet, which is safe, which can cut the material cost and the facility cost, which can continuously produce, by the use of a forming die, a formed lens sheet that contains no air bubbles in the lens area thereof and which can attain higher productivity, and reduction of costs by using a decreased number of forming dies or the like; and a projection screen. The process for producing a lens sheet according to the present invention includes the steps of coating a resin composition for a lens sheet onto a forming die by the use of a multiple nozzle in which a plurality of nozzles are arranged at intervals along the forming die for a lens sheet in a direction substantially rectangular to a direction in which the resin composition for a lens sheet will be coated, and superposing a base material on the resin composition for a lens sheet which has been coated onto the forming die.
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