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27 条记录 (耗时 0.009 秒)

    CONTACT LENS MANUFACTURING METHOD
    1.
    发明公开
    CONTACT LENS MANUFACTURING METHOD 审中-公开
    方法隐形眼镜

    公开(公告)号：EP2643152A1

    公开(公告)日：2013-10-02

    申请号：EP11787893.4

    申请日：2011-11-24

    申请人： Daysoft Limited

    发明人： HAMILTON, Ronald

    IPC分类号： B29D11/00

    CPC分类号： B29D11/00038 ,  B29D11/00192 ,  B29D11/00567

    摘要： In manufacturing a contact lens, a contact lens mould arrangement in which the engagement between the mould halves is unconstrained and at least one mould half is sufficiently pliable or flexible that during the curing of the contact lens composition at one mold half may move or flex relative to the other to define a post-cure mould cavity of smaller volume than the pre-cure mould cavity and during which the curvatures of the first and/or second mould surfaces are allowed to change provides a significantly more efficient manufacturing process and enables one mould half to be readily utilized as a blister cup for contact lens packaging.

    CLEANING PROCESS
    2.
    发明公开
    CLEANING PROCESS 失效
    清洁过程

    公开(公告)号：EP0854784A1

    公开(公告)日：1998-07-29

    申请号：EP96932740.0

    申请日：1996-10-09

    申请人： Award PLC

    发明人： HAMILTON, Ronald, Shade

    IPC分类号： B08B11 ,  B29C71 ,  B29D11 ,  C11D3

    CPC分类号： B29D11/00567 ,  B08B11/02 ,  B29C71/0009 ,  B29D11/00067 ,  C11D3/0078

    摘要： The present invention relates to a method and apparatus for the hydration and cleaning of hydrophillic moulded products, such as contact lenses (10), moulded between two mould portions (4, 12), with hydration fluid and the removal of the hydration fluid. The mthod comprises the steps of: providing a moulded product (10) held in between the mould surfaces (6, 14) of the two mould portions (4, 12); separating the two mould portions (4, 12) so that the product (10) is held on the mould surface (6, 14) of one of the two mould portions (4, 12); providing a support tray (1) formed and arranged for supporting two mould portions in spaced apart opposed proximity relative to each other so as to captively contain a product (10) in a product holding space (16a) defined by the mould portions so that the mould portions and support tray (1) define fluid passages therebetween for substantially unobstructed flow of fluid through the product holding space (16). Hydration fluid is introduced into the product holding (16) so as to hydrate the moulded product (10), the hydrated product being captively retained in said product holding space (16). Cleaning fluid (2) is introducted into the product holding space (16) so as to substantially flush the product holding space (16) and the moulded product (10) of hydration fluid and any contaminants contained therein.

    摘要翻译： 本发明涉及在两个模具部分（4,12）之间用水合流体和去除水合流体来水合和清洁亲水模制产品（例如隐形眼镜（10））的方法和装置。 该方法包括以下步骤：提供保持在两个模具部分（4,12）的模具表面（6,14）之间的模制产品（10）; 分离两个模具部分（4,12），使得产品（10）保持在两个模具部分（4,12）之一的模具表面（6,14）上; 提供支撑托盘（1），所述支撑托盘（1）形成并布置成用于支撑相对于彼此隔开相对靠近的两个模具部分，以便将产品（10）捕获地容纳在由所述模具部分限定的产品容纳空间（16a）中， 模具部分和支撑托盘（1）在其间限定流体通道，用于流体基本上无阻碍地流过产品容纳空间（16）。 将水合流体引入产品容纳部（16）以便水合模制产品（10），水合产品被捕获地保持在所述产品容纳空间（16）中。 清洁液（2）被导入到产品容纳空间（16）中，以基本上冲洗产品容纳空间（16）和水合液和模制产品（10）中含有的水合液和污染物。

    MOULDING CONTACT LENSES
    9.
    发明授权
    MOULDING CONTACT LENSES 失效
    模制接触镜

    公开(公告)号：EP0255535B1

    公开(公告)日：1990-06-27

    申请号：EP87900862.1

    申请日：1987-01-27

    申请人： COOPERVISION OPTICS LIMITED

    发明人： SEDEN, William, Edward ,  SHEPHERD, David, William, James ,  HENDERSON, Peter

    IPC分类号： B29D11/00 ,  B29C33/44 ,  B29C33/00

    CPC分类号： B29D11/00057 ,  A45C11/005 ,  B29C33/0016 ,  B29C33/0038 ,  B29C33/005 ,  B29C37/005 ,  B29D11/00567 ,  B29D11/00576 ,  C07D231/12 ,  C07D233/56 ,  C07D249/08 ,  C07D405/14 ,  Y10S425/808

    摘要： A polyolefin mould for casting contact lenses from a polymerisable monomer composition which shrinks on polymerisation, said mould comprising: male (50) and female (51) mould halves at least one of which has a flexible diaphragm portion (53, 54) which is shaped to provide a surface corresponding to a lenticular surface, said mould halves (50, 51), when closed together, cooperating to define a mould cavity (52) for receiving a volume of said monomer composition, at least one of said mould halves (50, 51) having a shoulder portion (55, 56) surrounding said cavity and shaped to engage with said other mould half to define an edge moulding portion of said cavity; whereby in use said diaphragm (53, 54) is deflected into said cavity under forces exerted on said mould by said monomer composition when polymerised in said closed cavity (52), thereby compensating for the shrinkage occurring on polymerisation and avoiding the formation of bubbles or voids in the resulting lenses. In addition, the invention includes a method of casting contact lenses using a mould of the above kind.