PPA pepper ball is also called polyphthalamide pepper ball. The most remarkable feature of PPA plastic pepper ball is its high temperature resistance. The working temperature of PPA pepper ball can be above 200 degrees, so the manufacturing and processing of PPA pepper ball is the most difficult of all plastic hollow balls. The manufacturing technology of PPA pepper ball is produced by laser welding technology.The semi-finished semi-finished semi-finished PPA pepper ball should be manufactured first, and then welded by a special laser welding machine. PPA plastic is more suitable to be manufactured by laser welding because it can be heated at high temperature. When laser melts the glue position at the joint during the welding process of PPA hollow pepper ball, both hemispheres should be pressurized and cured with a fixture at the same time, and the curing time should be more than 30 seconds. The cured finished product is the semi-finished product of PPA hollow pepper ball, and then it is grinded by a special plastic ball mill. After grinding, PPA hollow pepper ball has high precision and smooth surface, and is used in automobile and other fields.The most commonly used process of PA hollow pepper balls is the in-mold high-temperature welding process, in which two semi-circular molds are used to put two semi-circular PA hollow pepper ball hemispheres, and after the molds are closed, they are put into a special furnace for heating. Because the joint position of the molds is thin, the plastic at the joint is melted first, and the edges of the two upper hemispheres begin to fuse together when melting. The fused molds are cooled in cold water, and the cooled molds are opened to take out the welded hollow balls.