The PTFE plastic pepper ball is made of PTFE injection grade material, and the density of PTFE material is 2.2g/cm³. In order to make the density of PTFE plastic pepper ball below 1.0 and float on the water, the wall thickness of PTFE plastic pepper ball must be made thin and controlled below 1.0mm, and the manufacturing process of PTFE plastic hollow pepper ball can only be manufactured by plastic welding process.PTFE plastic hollow pepper ball is made by using two plastic hemispheres through special manufacturing and pressing together, and then using a special laser welding machine for plastic hollow pepper ball. It is difficult to weld PTFE plastic hollow pepper ball, because PTFE material has the characteristics of high temperature resistance and low viscosity, so after the joint of plastic hollow pepper ball is melted by laser, the upper and lower tools should be pressurized quickly. When the melted plastic at the joint is hardened, You can separate the tooling, take out the semi-finished product of the welded PTFE plastic hollow pepper ball, and then remove the air from the semi-finished PTFE plastic hollow pepper ball, and polish it with a special grinder for plastic balls to get the finished PTFE plastic hollow pepper ball.