| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser welding material and a laser welding method allowing firm joining of resin members in joining them by laser welding. <P>SOLUTION: A laser welding material wherein a first resin member and a second resin member are joined by lapping and irradiated with a laser beam from the first resin member side, which is characterized in that the first resin member is slightly laser beam absorbent while the second resin member is laser beam absorbent. When irradiated by the laser beam, the slightly absorbent first resin member generates heat by absorbing energy and the temperature at its joint surface with the second resin member rises to some extent. The second resin member is heated to melt by absorbing the laser beam under this state, which makes the first resin member melt easier, and the both resin members get mutually entangled enough at their joint section to enhance the joining. <P>COPYRIGHT: (C)2004,JPO |
