The laser marking test of polypropylene composite materials was carried out using an infrared laser mark-ing machine with a maximum power of 30 W.The influence of fillers talcum powder,glass fiber and flame retardant in the formula of polypropylene composite materials on the laser marking effect of the material was studied.And the laser marking effect of the material under different laser marking processes.The experimental results show that the material filled with talcum powder helps the material to be better lasered,while the material filled with glass fiber and flame re-tardant is not conducive to the lasering of the material.In addition,the stronger the laser energy,the deeper the mark;the smaller the laser filling spacing,the finer and denser the pattern;the faster the lasering speed,the lighter the color.
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