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1. 发明申请

WO2004076160A1 CONTACT LENS MOULD 审中-公开
标题翻译：联系镜头模具
公开(公告)号：WO2004076160A1
公开(公告)日：2004-09-10
申请号：PCT/GB2004/000514
申请日：2004-02-09
申请人： CONCAVEX LTD , BROAD, Robert, Andrew , MCEVOY, Steven, John , MACCABEE, Gordon, Frederick , DUNCAN, Alan
发明人： BROAD, Robert, Andrew , MCEVOY, Steven, John , MACCABEE, Gordon, Frederick , DUNCAN, Alan
IPC分类号： B29D11/00
CPC分类号： B29C33/0055 , B29C33/0038 , B29D11/00057 , B29L2011/0041
摘要： The present invention discloses a contact lens mould for producing a contact lens. The mould comprises a first mould half (10) having a convex moulding surface (36m) of predetermined curvature, and a second mould half (12) having a concave moulding surface (26f) of predetermined curvature. The first mould half (10) is provided with an annular abutment surface (38m) which circumferentially surrounds and is contiguous with the convex moulding surface (36m), and the second mould half (12) is provided with a flexible annular lip (28f) which circumferentially surrounds the concave moulding surface (26f). In use, when the mould halves (10, 12) are brought together, the annular lip (28f) forms a continuous line contact with the abutment surface (38m) whereby a mould cavity (40) is defined between the moulding surfaces (26f, 36m), a radially inner surface (42f) of the annular lip (28f) and at least part of the abutment surface (38m), and an angle (α) of less than 180° is defined between the abutment surface (38m) and the convex moulding surface (36m) at their intersection and an included angle (θ) of less than 90° is defined between the abutment surface (38m) and the radially inner surface (42f) of the lip (28f). As the mould halves (10, 12) are brought closer together during polymerisation, the lip (28f) flexes radially outwardly.
摘要翻译：本发明公开了一种用于制造隐形眼镜的隐形眼镜模具。模具包括具有预定曲率的凸形成型表面（36m）的第一半模（10）和具有预定曲率的凹形成型表面（26f）的第二半模（12）。第一半模（10）设置有环形邻接表面（38m），环形邻接表面（38m）周向地围绕并与凸模制表面（36m）邻接，并且第二半模（12）设置有柔性环形唇缘（28f）其周向地围绕凹形模制表面（26f）。在使用中，当半模（10,12）被集合在一起时，环形唇缘（28f）与邻接表面（38m）形成连续的线接触，从而在模制表面（26f， 36m），所述环形唇缘（28f）的径向内表面（42f）和所述邻接表面（38m）的至少一部分以及小于180°的角度（α）被限定在所述邻接表面（38m）和在邻接表面（38m）和唇缘（28f）的径向内表面（42f）之间限定了其相交处的凸形成型表面（36m）和小于90°的夹角（theta）。当半聚合物（10,12）在聚合期间更靠近在一起时，唇缘（28f）径向向外弯曲。

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