Low pressure thermoforming of thin, optical carriers
    6.
    发明授权
    Low pressure thermoforming of thin, optical carriers 有权
    薄型光载体的低压热成型

    公开(公告)号:US07459120B2

    公开(公告)日:2008-12-02

    申请号:US10727818

    申请日:2003-12-04

    摘要: A method for thermoforming a thin thermoplastic carrier with uniformity of thickness at optical quality. The sheet to be thermoformed is heated and placed on a vented platform equipped with a mold insert. The thermoformer's platens clamp a shroud over the sheet. A low pressure air stream is introduced into the shroud and deflected from a direct path leading to the mold insert.

    摘要翻译: 一种在光学质量下热成型厚度均匀的薄型热塑性载体的方法。 将要热成型的片材加热并放置在配有模具插入件的通风平台上。 热成型机的压板将护罩夹在纸张上。 低压空气流被引入到护罩中并且从通向模具插入件的直接路径偏转。

    Method of injection molding thin thermoplastic lenses
    7.
    发明授权
    Method of injection molding thin thermoplastic lenses 有权
    注塑薄型热塑性透镜的方法

    公开(公告)号:US07854865B2

    公开(公告)日:2010-12-21

    申请号:US11147614

    申请日:2005-06-08

    IPC分类号: B29D11/00

    CPC分类号: B29D11/0073 B29D11/00009

    摘要: Methods are disclosed to injection mold resins, like polycarbonate, to form solid optical lenses. The lenses are ideally suited for use as very thin coating carriers. The method involves closing the mold with a clamp force less than the force exerted on the insert during injection. During injection the mold is allowed to breathe thereby overcoming many of the obstacles associated with injection molding very thin lenses. As the injection pressure subsides, the mold begins to close to perform a coining operation, resulting in a strong, high yield carrier or lens.

    摘要翻译: 公开了注射模制树脂(如聚碳酸酯)以形成固体光学透镜的方法。 这些镜片非常适合用作非常薄的涂层载体。 该方法包括用小于在注射期间施加在插入件上的力的夹紧力来闭合模具。 在注射期间,允许模具呼吸,从而克服与注射成型非常薄的透镜相关联的许多障碍物。 当注射压力降低时,模具开始关闭以进行压印操作,导致强大的高产量载体或透镜。