Laser welding refers to the technology to crimp such materials as thermoplastic resins by heating them with lasers and joining them. Lasers are shot at the resins, and the melted spots solidify when they are cooled so that the materials are firmly adhered together.
Conventionally, adhesives have often been used to join resins of different types or resins and metals. In contrast, laser welding does not require adhesives, making it possible to reduce corresponding costs. Moreover, not having the volatility seen in adhesives, the technology has such advantages as "being friendly to the human body" and "taking little time for solidification."
Laser welding is relatively new among technologies for adjoining materials by applying heat. Some methods utilizes ultrasound or hot plates, but laser welding is superior in terms of ease to process and the processing quality. As such, laser welding is increasingly used in a variety of fields including automobiles, aircrafts and medical equipment.
