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    • 51. 发明公开
    • RESIN JOINED BODY AND METHOD FOR MANUFACTURING SAME
    • VERBUNDHARZKÖRPERUND HERSTELLUNGSVERFAHRENDAFÜR
    • EP2762293A4
    • 2015-08-12
    • EP12836324
    • 2012-09-27
    • NGK SPARK PLUG CO
    • KAWAGISHI WATARUFUJI YUSUKEKODA TAKASHIKOHMURA YOSHIHIKO
    • B29C65/16
    • B32B37/0076B29C65/1635B29C65/1654B29C65/1658B29C65/1677B29C65/1696B29C65/7817B29C65/8253B29C66/112B29C66/131B29C66/24244B29C66/3472B29C66/53461B29C66/652B29C66/71B29C66/721B29C66/7212B29C66/73115B29C66/73161B29C66/733B29C66/7332B29C66/7336B29C66/73921B29C66/8248B29C66/836B29C66/872B32B7/045Y10T428/24851B29K2309/08B29K2077/00
    • [OBJECT] To provide a method for producing a resin joined body, which method can solve, without controlling laser irradiation conditions (e.g., laser output and the movement speed of a laser head), problems involved in a resin joined body production method wherein a first resin member and a second resin member which are stacked with each other are welded together by carrying out laser welding along a line on a welding portion; i.e., problems in terms of impairment of bonding strength and sealing performance, which arise due to the fact that the end point of laser welding falls beyond the start point thereof, and the resultant resin joined body has a weld overlap portion (i.e., a welded portion between these two points, which has been subjected to a laser irradiation process one more time than has another welded portion). [MEANS FOR SOLUTION] A specific region L1 of a welding portion of a second resin member 21 is provided to form a low-laser-light-transmissible portion, the low-laser-light-transmissible portion having laser light transmissibility lower than that of a region of the welding portion other than the specific region L1; and welding is carried out so that a portion between points S2 and F2, serving as a weld overlap portion 112, is present in the specific region L1 forming the low-laser-light-transmissible portion.
    • 本发明提供一种在不控制激光照射条件(例如激光输出和激光头的移动速度)的情况下可以解决的方法来制造树脂接合体的方法,其中树脂接合体的制造方法 通过沿焊接部分的线进行激光焊接,将彼此堆叠的第一树脂部件和第二树脂部件焊接在一起; 即由于激光焊接的终点超出其起始点而产生的接合强度和密封性能的损害方面的问题,并且所得到的树脂接合体具有焊接重叠部分(即,焊接 这两点之间的部分比已经进行了激光照射处理的时间要多一个焊接部分)。 [解决方案]设置第二树脂构件21的焊接部分的特定区域L1以形成低激光透射部分,该低激光透射率部分的激光透射率低于 除特定区域L1之外的焊接部分的区域; 并且进行焊接,使得在形成低激光可透射部分的特定区域L1中存在用作焊接重叠部分112的点S2和F2之间的部分。