Method and apparatus for injection molding data- carrying...

Details Method and apparatus for injection molding data- carrying... Method and apparatus for injection molding data- carrying...

B - Operations, Transporting

29

D

18/101

B29D 17/00 (2006.01)

Patent

CA 1111214

S P E C I F I C A T I O N Abstract of the Disclosure A method and apparatus for injection molding styrene phonograph records and the like. Through use of special fix- tures and the careful control of time, temperature and pressure during the molding process in accordance with the method of the m invention, the height, width, angle and side wall configuration of the groove of monophonic, sterophonic or quadraphonic record masters can be precisely replicated in the molded record, there- by enabling high volume production of injection molded styrene records of superior quality.

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