日本成人不卡一区二区-日韩欧美自拍在线观看-男人对女人下部猛插免费视频-欧美色香蕉一区二区三区-国产国产午夜福利视频在线观看-99国内精品一区二区三区-五月激情六月综合婷婷-亚洲欧美综合图一图二-亚洲国产欧美日韩在线人成

As for the blistering phenomenon in laser marking of some plastic materials, the main source is the workpiece itself. Now, please follow Foshan Fulan Laser to see what the reasons are:
1. The marking shall be carried out after the treatment of protective oil (i.e. sealing oil). Bubbling is unavoidable.
2. When the bottom paint film is not completely dry, the surface paint shall be coated again.
3. The joints and eyelets of the substrate are not filled, and there are gaps and eyelets.
4. Paint viscosity is too high. Improper paint mix.
5. Drag the brush back and forth during brushing, and the bubbles generated are not eliminated.
6. There is water in the compressor and air pipe, or water splashes on the construction surface.
7. If the substrate is not properly treated, bubbles may occur when the residual substances volatilize naturally.