Infrared Welding Machine Infrared welding is a non-contact heating process that uses infrared heating filament to heat the product welding line.High welding strength with water tightness and air tightness.Less welding seam, welding slag, and welding flash;Fast heating speed;Can effectively replace traditional screws, snaps, glue, and other bonding process;Can weld a variety of plastic parts and materials, especially suitable for nylon and other soft materials with high-melting material.