The density of solid plastic pepper balls can't be exactly the same due to the differences in materials and injection molding technology. For customers with low requirements, the existence of such differences doesn't have much impact, but some customers with high requirements require that the density of solid plastic pepper balls should be consistent, so we should find out the reasons for the difference.

In the process of injection molding, the solid plastic pepper ball is easy to make gas remain in the plastic pepper ball and form bubbles, which are the main reasons that affect the density of the plastic hollow pepper ball. The main reasons for the bubbles in the middle of the plastic solid pepper ball are the material, the mold and the parameter setting of the injection molding machine.

The main reason for the material is that the material is not fully dried, which causes the gas in the material to enter the mold cavity with the rubber compound and form bubbles. The improvement method is to fully dry the material, which will completely solve the bubbles in the plastic pepper ball caused by the moisture in the material.

In the original drawing of the mold, because the gas in the runner of the plastic pepper ball mold did not leave the mold in time, this part of the gas was trapped inside the plastic pepper ball and formed bubbles. The solution is to exhaust the mold accordingly, and the gas in the mold will be exhausted outside the mold, so that bubbles will not be formed.

In the process of injection molding of injection molding machine, the shooting speed of the machine is too fast, so that the gas in the mold can not be discharged from the mold in time, resulting in trapped gas and bubbles. The solution is to slow down the shooting speed of the injection molding machine, which can significantly solve the problem of bubbles in plastic pepper balls.