The production process of plastic nylon hollow spheres is more complicated, because the skin thickness of nylon hollow spheres is not fixed, so with the variation of the thickness of nylon hollow spheres skin, the proportion of nylon hollow spheres also changes greatly, if you want to calculate the plastic nylon hollow spheres The proportion of light weight depends on the nylon ball diameter to calculate the specific gravity of the nylon hollow ball. The calculated value is very inaccurate. If accurate values are required, the container can only be tested in water, nylon solid ball is immersed in water, and nylon hollow ball is used. When immersed in water, the difference in the weight of the spilled water between them is the weight of the plastic nylon ball.