Molds for use in contact lens production

Details Molds for use in contact lens production Molds for use in contact lens production

B - Operations, Transporting

29

D

B29D 11/00 (2006.01) B29C 33/30 (2006.01)

Patent

CA 2667932

The present invention provides molds (102, 103) useful in contact lens production, which molds incorporate a centering and spacing feature in the form of tabs (116) on one of the mold halves. The spacing feature both centers the mold halves in relationship to each other and permits free flow of excess monomer from the mold. Additionally, the spacing feature aids in height control of the one mold half in relation to the other mold half.

La présente invention concerne des moules (102, 103) utiles lors de la production de verres de contact, lesquels moules incorporent une caractéristique de centrage et d'espacement sous forme de pattes (116) sur un des demi-moules. La caractéristique d'espacement centre les demi-moules l'un par rapport à l'autre et permet l'écoulement libre de monomère excédentaire à partir du moule. En outre, la caractéristique d'espacement aide à contrôler la hauteur d'un demi-moule par rapport à l'autre demi-moule.

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