PA pepper balls can also be called nylon hollow pepper balls. The manufacturing technology of PA hollow pepper balls is difficult to be completed by traditional blow molding technology. The newly developed PA hollow pepper balls are produced by mold hot welding technology. PA hollow pepper balls have high strength, no weld line and beautiful appearance.PA hollow pepper balls are produced by hot welding with molds. Firstly, two semi-spheres of PA hollow pepper balls should be manufactured, and the mold should be designed according to actual needs. Generally, the wall thickness of PA hollow pepper balls is between 1.0 mm and 3.0 mm. Theoretically, the thicker the wall thickness, the lower the production difficulty. Put the semi-spheres of two PA hollow pepper balls into the processed mold, fasten the mold, and then put the mold in a special furnace for heating. The joint of the mold is designed to be thinner than other positions, so the PA glue at the joint begins to melt first, and the welding process is also a process of melting and welding at the same time. When the joint is completely melted, the plastic joints of the two hemispheres are completely fused together. Take out the mold, cool down, and finally take out the products in the mold for the next process, that is, put the semi-finished plastic hollow ball into the plastic pepper ball mill for finishing, and after grinding and polishing, the produced PA hollow ball is the precision PA hollow pepper ball.