According to the causes of bubbles, the solutions are as follows:

1) When the wall thickness of the product is large, the cooling speed of the outer surface is faster than that of the center part. Therefore, with the cooling process, the resin in the center part shrinks and expands to the surface, resulting in insufficient filling in the center part. This is called a vacuum bubble. The solutions are as follows:

a) According to the wall thickness, determine the reasonable gate ... Read more