发明名称 |
METHOD FOR COATING AN OPHTHALMIC LENS WITHIN AN INJECTION MOLDING MACHINE |
摘要 |
A method for in-mold coating of an injection molded thermoplastic lens that resides in an injection molding machine oriented to a horizontal parting line. An optical lens is initially formed by injecting molten thermoplastic resin into an edge-gated lens-forming cavity held closed under a primary clamp force. The mold is opened at a time when the lens is rigid enough to retain its shape. An unpressurized full metered charge of coating is applied onto the center of the lens. The coating is co-molded by ramping up the clamp force from zero to a secondary clamp force less than the primary clamp force to compress the coating into a uniformly thick, fringe-free layer.
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申请公布号 |
US2009124721(A1) |
申请公布日期 |
2009.05.14 |
申请号 |
US20060158613 |
申请日期 |
2006.12.21 |
申请人 |
CHEN XU;LOCKWOOD MATTEW JAMES;YANG HSINJIN |
发明人 |
CHEN XU;LOCKWOOD MATTEW JAMES;YANG HSINJIN |
分类号 |
B29D11/00;G02B1/04 |
主分类号 |
B29D11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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