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1. 发明公开

EP1106326A1 INJECTION COMPRESSION MOLDING METHOD FOR OPTICALLY FORMED PRODUCT 有权
标题翻译： SPRITZDRUCKGUSSVERFAHRENFÜROPTISCH GEFORMTE PRODUKTE
公开(公告)号：EP1106326A1
公开(公告)日：2001-06-13
申请号：EP99913725.0
申请日：1999-04-20
申请人： Teijin Chemicals, Ltd.
发明人： GOTOH, Kiyohito , ICHIOKA, Hiromi
IPC分类号： B29C45/70 , G02B3/00 , G02C7/02
CPC分类号： B29C45/561 , B29C2045/5615 , B29C2045/5635 , B29C2045/567 , B29C2945/76006 , B29C2945/76187 , B29L2011/0016 , Y10S425/808
摘要： A method of producing an optically molded product of a thermoplastic resin by injection compression molding, the method comprising the steps of:

(1) expanding the volume of a cavity more than the volume of the optically molded product of interest;
(2) injecting a molten thermoplastic resin into the cavity through an injection cylinder;
(3) compressing the expanded cavity to a prescribed thickness of the molded product;
(4) returning an excess of the thermoplastic resin produced by the compression into the injection cylinder; and
(5) keeping the molten thermoplastic resin in the cavity until the molded product of interest is formed.

The present invention makes it possible to produce an optically molded product (for example, a spectacle lens) free from a weld line and excellent in surface accuracy using a metal mold having a simple structure industrially advantageously.
摘要翻译：一种通过注射压缩成型制造热塑性树脂的光学模制产品的方法，所述方法包括以下步骤：（1）使空腔的体积比所关注的光学模制产品的体积更大; （2）通过注射圆筒将熔融的热塑性树脂注入腔体; （3）将膨胀的空腔压缩成规定厚度的模制品; （4）将通过压缩生成的过量的热塑性树脂返回到注射筒中; 和（5）将熔融的热塑性树脂保持在空腔中，直到形成所关注的成型产品。本发明使得可以在工业上有利地使用具有简单结构的金属模具来制造没有熔接线的光学模制产品（例如，眼镜镜片）并且具有优异的表面精度。

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