355nm UV laser marking heat shrinkable tube model and date 355nm UV laser marking heat shrinkable tube will not be deformed or burnt What kind of laser marking machine is used to mark heat shrinkable tubing?     RFH 355nm ultraviolet laser has little thermal effect, avoiding deformation or scorching of the heat-shrinkable tube The heat shrinkable tubing is made of radiation cross-linked polyolefin material, with excellent physical, chemical and electrical properties. The main functions are wire harness protection, electrical insulation of connectors, rust and corrosion protection of solder joints, and mechanical protection. The product is halogen-free and environmentally friendly, and has flame-retardant properties. It is widely used in automotive wiring harness, electronic components, communications and other fields. The heat shrinkable tube shrinks when heated, and it is very sensitive to heat. However, the 355nm ultraviolet laser has a very small focus spot and a small processing heat-affected zone, so there is almost no damage caused by heat, so it is called a cold source. Because of the extremely small heat-affected area of ​​the UV laser, there will be no thermal effect, and the problem of deformation or burnt when marking the model or date on the heat shrinkable tube is avoided.