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1. 发明申请

WO2005021250A1 A METHOD OF MOULDING CONTACT LENSES AND MOULDING APPARATUS FOR USE IN THE METHOD 审中-公开
标题翻译：一种用于在方法中使用的接触镜和模制装置的方法
公开(公告)号：WO2005021250A1
公开(公告)日：2005-03-10
申请号：PCT/GB2004/003677
申请日：2004-08-27
申请人： VISAQ LIMITED , KELLY, Michael
发明人： KELLY, Michael
IPC分类号： B29D11/00
CPC分类号： B29D11/00134 , B29D11/00057
摘要： The present application relates to a method of moulding a contact lens using a male mould (3) and a female mould (5). The method comprises the steps of introducing lens-forming material in a liquid state into the female mould. The male mould is then inserted into the female mould to a first relative position to form an assembly of the male and female moulds in which the moulds together define a moulding cavity (11) and a reservoir (21) for lens-forming material. During the insertion of the male mould to the first position thereof, part of the liquid state lens-forming material is expelled from the moulding cavity to the reservoir. Curing of the lens-forming material is then initiated in the moulding cavity whilst keeping open a pathway between the moulding cavity and the reservoir so as to allow lens forming material to flow from the reservoir into the moulding cavity to compensate for shrinkage of the lensforming material during curing. An external force is applied on the assembly of moulds to insert the male mould further into the female mould to thereby close the moulding cavity and to seal off the moulding cavity from the reservoir. The lens-forming material is allowed to complete the transformation to a final, glassy solid state within the sealed moulding cavity. The formed contact lens is removed from the assembly of male and female moulds after the lens forming material has reached the final glassy solid state thereof. The invention also relates to apparatus for moulding a contact lens.
摘要翻译：本申请涉及使用阳模（3）和阴模（5）模制隐形眼镜的方法。该方法包括以下步骤：将透镜形成材料以液态引入到阴模中。然后将阳模插入阴模中至第一相对位置，以形成阴模和阴模的组件，其中模具一起限定了用于透镜形成材料的模制腔（11）和储存器（21）。在将阳模插入其第一位置期间，部分液状透镜形成材料从模腔排出到储存器。透镜形成材料的固化然后在模制腔中启动，同时保持在模制腔和储存器之间打开通路，以允许透镜形成材料从储存器流入模制腔以补偿透镜成型材料的收缩在固化期间。在模具组件上施加外力以将阳模进一步插入阴模中，从而封闭模制腔并将模腔从储存器密封。允许透镜形成材料在密封模制腔内完成转化为最终的玻璃状固体状态。在镜片形成材料已经达到其最终的玻璃状固体状态之后，将形成的隐形眼镜从阳模和阴模的组件上移除。本发明还涉及用于模制隐形眼镜的装置。

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