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    Lens mould
    1.
    发明授权
    Lens mould 有权
    镜头模具

    公开(公告)号：US06405993B1

    公开(公告)日：2002-06-18

    申请号：US09531130

    申请日：2000-03-17

    申请人： Andrew Paul Morris

    发明人： Andrew Paul Morris

    IPC分类号： B29D1100

    CPC分类号： B29D11/00576 ,  B29D11/00057 ,  Y10S425/808

    摘要： A cast mould for use in the manufacture of a contact lens by the polymerisation of a flowable precursor comprises a female mould part and a male mould part. The female mould part has a concave first surface region adapted to receive the flowable precursor in use, and a second surface region. The male mould part has a convex first surface region and a second surface region. The male mould part is engageable with the female mould part to define a lens-forming recess between the concave and convex surface regions and to define a first overflow cavity between said second surface regions. The first overflow cavity is adapted to receive excess flowable precursor displaced from the lens-forming recess in use, and the first overflow cavity is provided with first retaining means such that, in use, after polymerisation, polymer in the first overflow cavity is mechanically interlocked with a single one of the mould parts after separation of the mould parts.

    摘要翻译： 用于通过可流动前体的聚合制造隐形眼镜的铸模包括阴模部件和阳模部件。 阴模部件具有适于接收使用中的可流动前体的凹入的第一表面区域和第二表面区域。 阳模部件具有凸的第一表面区域和第二表面区域。 阳模部分可与阴模部分接合以在凹表面区域和凸表面区域之间限定透镜形成凹槽，并且在所述第二表面区域之间限定第一溢流腔。 第一溢流腔适于接收在使用中从透镜形成凹槽移位的过量的可流动前体，并且第一溢流腔设置有第一保持装置，使得在使用中，在聚合之后，将第一溢流腔中的聚合物机械地互锁 在模具零件分离后，单一的模具零件。