Development on Methods of Laser Welding of Plastics

First the principle of laser welding of plastics is explained in this paper. Several laser welding methods of plastics are introduced, including contour welding, simultaneous welding, quasi-simultaneous welding, mask welding, diffractive welding, Hybrid welding and Globo welding. Then the main equipments used in laser welding of plastics and the main materials available for laser welding are presented in this paper. And present status and development trend of laser welding of plastics are summarized. It can be seen that with the maturing of two-dimension welding, the laser welding of plastics has turned to three-dimension. Laser welding of plastics is becoming a hot phenomenon in laser welding field. It might replace the traditional welding methods of plastics.