PRODUCTION OF LENS SHEET FOR SCREEN

摘要

PURPOSE:To efficiently produce a lens sheet for a screen within a short production time while preventing the generation or mixing of air bubbles even in a lens sheet for a screen having a complicated surface shape and facilitating the assembling of a retaining mold or demolding. CONSTITUTION:A retaining mold consisting of a lower mold 3 having a molding surface 2 of a lenticular lens and an upper mold 7 having a molding surface 6 of a Flesnel lens and formed so as to be fitted in the recessed part 1 of the lower mold 3 and constituted so as to be capable of being evacuated and internally pressurized is used and a reactive raw material solution is held between the molding surfaces 2, 6. Then, the retaining mold is clamped under pressure to apply internal pressure to the molds and curing reaction is performed while compressed air is gradually discharged.