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    • 1. 发明申请
    • Method for producing contact lenses
    • 隐形眼镜的制造方法
    • US20050212155A1
    • 2005-09-29
    • US11088089
    • 2005-03-23
    • Yasuo MatsuzawaTodd Russell
    • Yasuo MatsuzawaTodd Russell
    • B29C33/20B29D11/00
    • B29D11/0023B29D11/00125B29D11/00221B29D11/00278B29D11/0073
    • The invention provides an improved process in which minimal force is required to separate mold halves so as to minimize lens damages resulted from the forced separation of mold halves. The process of the invention comprises: providing a mold including a first mold half having a first molding surface and a second mold half having a second molding surface, wherein the first and second mold halves are configured to receive each other such that a mold cavity is formed between the first and second molding surfaces, wherein one of the first and second mold halves has a collar that encircles the other mold half to provide a seal between the two mold halves when the mold is closed; dispensing a specific amount of a polymerizable lens-forming material into one of the mold halves; mating the mold halves to close the mold; polymerizing said polymerizable material located between the two mold halves, thereby forming a molded contact lens; applying a small force to the collar to distort the collar, thereby breaking the seal between the two mold halves; and opening the mold.
    • 本发明提供了一种改进的方法,其中需要最小的力来分离半模,以便最小化由半模的强制分离导致的晶状体损伤。 本发明的方法包括:提供一种模具,其包括具有第一模制表面的第一模具半部和具有第二模制表面的第二模具半部,其中所述第一模具和第二半模构造成彼此接收, 形成在第一和第二模制表面之间,其中第一和第二半模中的一个具有环绕另一半模以在模具关闭时在两个半模之间提供密封的套环; 将一定量的可聚合透镜形成材料分配到其中一个半模中; 配合半模以关闭模具; 聚合位于两个半模之间的所述可聚合材料,从而形成模制的隐形眼镜; 对轴环施加小的力以扭转轴环,从而破坏两个半模之间的密封; 并打开模具。