B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/99
B29D 17/00 (2006.01) B29C 35/08 (2006.01) B29C 43/02 (2006.01) B29C 43/18 (2006.01) B29C 43/40 (2006.01) B29C 70/78 (2006.01) G11B 7/26 (2006.01)
Patent
CA 1157607
PROCESS AND APPARATUS FOR MAKING VIDEO DISKS . ABSTRACT OF THE DISCLOSURE A process and apparatus for making video disks by moulding from an engraved master Which consists in depositing on one edge of the master an elongated fillet of a curable resin ; photopolymerizable or thermosetting and spreading gradually the resin between the master and a flexible film of a substrate which is applied by means of a pressure roller, the resin being then cured as required by ultra-violet or infrared radiation through the film. The process may also comprise piercing the central hole and cutting out the disk. The formation of a succession of disks on the same film may be made automatic, the film advancing step by step between each moulding and/or cutting out operation,
346882
Bricot Claude
Robin Gerard
Goudreau Gage Dubuc
Thomson-Brandt
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