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    • 7. 发明授权
    • Methods and systems for forming ophthalmic lens mold assemblies
    • 用于形成眼镜片模具组件的方法和系统
    • US08147727B2
    • 2012-04-03
    • US12763543
    • 2010-04-20
    • Ian BruceRobert OagStuart BaileyStephen Saunders
    • Ian BruceRobert OagStuart BaileyStephen Saunders
    • B29D11/00
    • B29D11/005B29C33/202B29L2011/0041Y10S425/808
    • Methods and systems are provided for making an ophthalmic lens. The present methods and systems are effecting in coupling two mold sections together at two or more discrete regions. Embodiments of the methods and systems form a bore that extends completely through one of the mold sections and only partially through the other mold section. During formation of the bore, the mold material in proximity to the bore being foamed becomes molten and diffuses from the bore. A portion of the molten mold material is provided at a contact point between the two mold sections and when the molten material cools, the material foams a spot weld between the mold sections. By foaming multiple hollow spot welds in a mold assembly, the two mold sections can be securely coupled to each other during the manufacture of an ophthalmic lens, such as a silicone hydrogel contact lens.
    • 提供了用于制造眼科镜片的方法和系统。 目前的方法和系统正在两个或更多个离散区域将两个模具部分联接在一起。 方法和系统的实施例形成了一个完全穿过其中一个模具部分并且仅部分地穿过另一个模具部分的孔。 在孔的形成期间,靠近所形成的孔的模具材料变得熔化并且从孔扩散。 熔融模具材料的一部分设置在两个模具部分之间的接触点处,并且当熔融材料冷却时,该材料在模具部分之间形成点焊。 通过在模具组件中形成多个中空点焊,在制造眼用透镜(例如硅酮水凝胶隐形眼镜)期间,两个模具部分可以彼此牢固地联接。