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    • 3. 发明申请
    • Mold for Injection Molding Light Guide Plate and Process for Producing Light Guide Plate Using the Mold
    • 注塑模具用导光板及使用模具生产导光板的工艺
    • US20070222092A1
    • 2007-09-27
    • US10594615
    • 2005-03-28
    • Masahiko HayashiKazunori UekiSatoshi TazakiKazuyuki Obuchi
    • Masahiko HayashiKazunori UekiSatoshi TazakiKazuyuki Obuchi
    • B29D11/00
    • G02B6/0065B29C45/2708G02B6/0046
    • Molds for injection molding a light guide plate in which a plurality of pin gates and/or film gates for injecting a melted resin material for molding into the cavity portion are formed at portions corresponding to the side portions of the product, a room for balancing flow having an ear shaped portion to which the material is supplied is disposed between each gate and a sprue or a runner, and the area of each gate is set so that the temperature of the material introduced into the cavity is higher than that supplied to each room by at least 5° C. due to heat generated from shearing when the material passes through the gate; and a process for producing a light guide plate using the molds. Formation of weld lines, sink marks, flow marks and warp is suppressed, and a product exhibiting excellent quality without the necessity of steps of gate cutting and finishing can be obtained.
    • 用于注射成型导光板的模具,其中在与产品的侧部相对应的部分处形成有用于将用于模制的熔融树脂材料注入到空腔部分中的多个针浇口和/或膜浇口,用于平衡流动的空间 具有供应材料的耳形部分设置在每个浇口和浇道或流道之间,并且每个浇口的区域被设定为使得引入空腔的材料的温度高于供应给每个房间的材料的温度 由于材料通过闸门时由剪切产生的热量至少5℃; 以及使用该模具制造导光板的方法。 焊接线,凹痕,流痕和翘曲的形成被抑制,并且可以获得在不需要栅极切割和整理的步骤的情况下表现出优异的品质的产品。