The Role of Plastic Lotion Pump Head The working principle of the lotion pump of Plastic Lotion Pump Head 1. Indenter—the indenter passes through the main column connected with the auxiliary column and the compression spring. During the compression of the spring, the piston wall rubs against the body through the inner wall, forcing the piston to open the discharge hole of the auxiliary column; When sliding down, the air in the body is exhausted through the exhaust hole of the opened auxiliary column; 2. Press back and forth many times-fully press the air in the body; 3. Suction-the air in the head is pushed out through the main column, auxiliary column, piston, and combined compression spring. The head spring loosens due to the loss of pressure. At this time, the piston moves back (up) and moves downward through the friction of the body wall. Move, the discharge hole of the auxiliary column is closed; at this time, the liquid storage cavity in the body is in a vacuum suction state, the glass ball is sucked up, and the liquid in the bottle is sucked into the liquid storage cavity in the body through the straw. 4. Liquid storage-press the head several times, and store the liquid into the body through repeated suction until the liquid storage is complete. 5. Liquid discharge-When the liquid in the body fluid storage cavity is full, press the nozzle again to spray the liquid directly from the nozzle through the liquid discharge hole. For more product-related information, please click: Cosmetic Packaging Factory our website:https://www.sprayer-factory.com/ our website:https://www.sprayer-factory.com/product/lotion-pump/