Method for treating plastic mold pieces

Details Method for treating plastic mold pieces Method for treating plastic mold pieces

B - Operations, Transporting

29

D

B29D 11/00 (2006.01) B29C 33/40 (2006.01) B29C 39/42 (2006.01)

Patent

CA 2199007

Surface characteristics of cast molded contact lenses are improved by removing substantially all the oxygen from the plastic mold pieces prior to casting the lenses.

On améliore les caractéristiques de surface d'une lentille de contact moulée par coulage, en éliminant pour ainsi dire tout l'oxygène contenu dans les pièces du moule en plastique utilisé, avant le coulage de la lentille.

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