Manufacturing technology of double-layer plastic pepper ballDouble-layer plastic pepper balls are also called composite plastic pepper balls. Generally, the plastic pepper balls inside are solid plastic pepper balls made of engineering plastics, and the outer layer is usually soft plastic with good elasticity. The advantages are guaranteed strength and long service life, but the disadvantages are high production cost and low efficiency.

It is relatively easy to manufacture the solid plastic pepper ball inside the double-layer plastic pepper ball, while the processing technology of the outer plastic ball is more complicated. Usually, PVC powder material is used. First, the PVC material is mixed into a paste-like liquid, and then the inner ball is heated. When the inner ball is heated to about 90 degrees, the inner ball is immersed in the PVC paste-like liquid, and then the plastic solid ball covered with PVC liquid is put into a special furnace for heating and molding. Generally, after more than 10 minutes of heating and molding, the molded composite is taken out of the furnace.