Method of manufacturing thermoplastic-resin molded optical...

Details Method of manufacturing thermoplastic-resin molded optical... Method of manufacturing thermoplastic-resin molded optical...

B - Operations, Transporting

29

D

B29D 11/00 (2006.01)

Patent

CA 2051349

A method of manufacturing thermoplastic-resin molded optical members having those sequential processes including the following, a process for feeding thermoplastic-resin material into a mold, a process for deforming thermoplastic-resin material in vacuo at spe- cific temperature causing the loaded thermoplastic-resin material to turn into flowing, and a process for producing molded optical member by gradually cooling off the mold in the upward direction from the bottom side while pressurizing the mold with inert gas. It is desired that the inner surface of the mold be preliminarily coated with fluoroplastic containing either fluorinated alicyclic group or fluorinated heterocyclic group in the main chain.

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