| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten a welding time and to further stabilize welding quality. <P>SOLUTION: The part 22 to be welded of the resin is irradiated with laser beams L2 having a wavelength longer than a predetermined value and laser beams L1 having the wavelength shorter than the predetermined value. For example, semiconductor laser beams can be used as laser beams L1 having the shorter wavelength and YAG laser beams or CO<SB>2</SB>laser beams can be used as the laser beams L2 having the longer wavelength. When a resin liner 20 is targeted, preferably it is irradiated with the laser beams L2 having the longer wavelength from the outside of the resin liner 20 and is irradiated with the laser beams L1 having the shorter wavelength from the inside of the resin liner 20. Furthermore, temperature or laser beam irradiation amount of part irradiated with the laser beams is measured by a measuring device 50 and irradiation amount of the laser beams is adjusted based on measuring result. <P>COPYRIGHT: (C)2010,JPO&INPIT |
