To avoid this kind of situation, during the production process, we should first check whether the spring length is standard. A slight difference can lead to a great loss. The effect of length on the piston cannot be ignored. If it is short, the piston will not return to its proper position, which will directly cause the head to rebound or rebound slowly after being pressed.
Secondly, check whether the thickness of the piston fits the body. During the movement of the piston, any gap will cause the suction to be weak and the head will not be able to press out the material. Since plastic has the property of thermal expansion and contraction, a normal piston is very important to ensure the quality of the lotion pump.
Finally, let's analyze the body. Given the scalable nature of plastic, if the operation is improper during injection molding, insufficient injection will cut off a thin layer of the body, resulting in uneven inner wall. Inevitably, gaps will be left during the piston stamping process, resulting in failure to discharge the material.