Methods and apparatus for eyeglass lens curing using...

B - Operations – Transporting – 29 – D

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B29D 11/00 (2006.01) B29C 35/08 (2006.01) B29C 37/00 (2006.01) C08J 7/04 (2006.01) B29C 35/16 (2006.01)

Patent

CA 2251649

Method and apparatus for making and coating a plastic lens. Oxygen barrier containing photoinitiator is used to cure incompletely cured lens portions. Radiation pulses are used to control lens curing rate. Lens is postcured while in a mold cavity using a conductive heat source. Air may be directed toward the mold cavity to help remove heat from the lens. An in-mold scratch resistant coating may be formed from two separate material which both contain a photoinitiator.

Procédé et appareil de fabrication et d'application d'un revêtement sur des verres en matière plastique. Une barrière d'oxygène, contenant un photoamorceur, est utilisé pour faire durcir les parties des verres insuffisamment durcies. Des rayons pulsés sont utilisés pour réguler la vitesse de durcissement du verre. Celui-ci est post-durci alors qu'il se trouve dans une cavité de moule au moyen d'une source de chaleur conductrice. De l'air peut être dirigé vers la cavité de moule pour contribuer à dissiper la chaleur du verre. Un revêtement résistant aux rayures peut être formé dans le moule à partir de deux matériaux distincts qui contiennent tous les deux un photoamorceur.

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