Generally, the shell of PA hollow pepper ball cannot be produced by blow molding. At present, the latest manufacturing technology of PA hollow pepper ball shell is laser welding.

Firstly, a semi-circular semi-finished product of PA pepper ball shell hollow ball should be manufactured, and the semi-finished product should be buckled. Before laser welding, the two hemispheres should be buckled together, and then placed on a laser table that can rotate horizontally, and a special laser welding machine should be used to align the gap of the buckle position for welding. When the laser melts the seam of PA pepper ball shell hollow ball, the lower shaft will rotate synchronously, that is, the laser should melt the whole joint seam once. After the molten PA material is molded again, the welding work is completed. Put the welded plastic pepper ball shell hollow ball into a special plastic ball grinder for grinding, and after grinding to the required size, the finished PA plastic pepper ball shell hollow ball is polished.