Laser welding is a welding method that uses a high-energy-density laser beam as a heat source. That is, laser radiation heats the surface of the workpiece, and surface heat is diffused to the inside through heat conduction to melt the workpiece to form a specific molten pool. As shown in the figure below, the laser beam passes through the upper layer of light-transmitting material and is then absorbed by the underlying material. The laser energy is absorbed and converted into heat energy. Since the two layers of material are pressed together, heat energy is transmitted from the absorption layer to the light-transmitting layer, so that two The layer material melts and bonds.
With the gradual maturity of plastic laser welding technology, the plastic laser welding process has gradually replaced the traditional medical adhesive.
Plastic laser welding can not only save the curing time of UV glue, but also greatly improve the production efficiency. Moreover, there is no consumables for plastic laser welding. The service life of laser generator is 20,000-80,000 hours, which saves the company the cost of medical adhesives.