Laser welding plastic material

Plastic welding is a technology with high technical content in the current market. The technical requirements and material requirements for plastic welding are relatively high. A slight deviation will cause the product to be scrapped. The first requirement for plastic welding is that the upper layer of plastic needs to be transparent. Yes, the lower part of the workpiece must be able to absorb the energy of the laser. Therefore, the general plastic laser welding material is the upper layer of natural color, and the lower layer is black.

If the upper and lower layers are made of light-transmitting materials, then it is necessary to add a light-absorbing agent such as Clear Weld to the welding position to absorb the energy emitted by the laser to melt the welding place, so as to achieve the welding effect. However, this process is rarely adopted by manufacturers, because the cost of the laser absorber is high, and the additional process and equipment required to add the absorber will increase the cost of the product and reduce the competitiveness of the market. Plastic laser welding equipment usually uses a wavelength of 800-1000nm, and plastic has a very high penetration rate to laser, and the energy that can be absorbed does not exceed 15%, which shows how low its ability to absorb laser light.

      The equipment can realize high-efficiency, high-precision, high-reliability and high-quality automatic welding. It can not only place parts by manual operation, but also integrate and semi-automatic and fully-automatic assembly line welding. Moreover, the equipment has high-strength safety protection functions to avoid laser damage to the human body. Laser plastic welding can weld a variety of materials, such as: ABS, PP, PC, PA, PMMA, PS, PBT, etc. The welding strength can be comparable to the base material.