The Two Basic Functions Of The Lotion Pump

The Two Basic Functions Of The Lotion Pump

Lotion pumps are also called nozzles, lotion nozzles, push-type lotion pumps, quantitative liquid dispensers, etc., and are used in shampoo (milk), shower gel (milk), conditioner, body lotion (milk), facial cleanser, Hand sanitizer, detergent, laundry detergent, toner, disinfectant, body oil, baby oil, essence, sunscreen, BB cream, foundation, and food packaging products. In terms of product function and structure, it can be divided into ordinary emulsion pumps, vacuum emulsion pumps, oil pumps, bubble pumps, spray pumps, emulsion pumps with springs that do not contact the liquid, and so on.

The basic functions of the lotion pump are:

1. Sealing function. I believe that every consumer is unwilling to accept a product whose contents have leaked/seeped out of the surface of the bottle. After the lotion pump and the bottle are filled and packaged, the sealing function is one of the important requirements to ensure the storage and transportation of bottled products.

2. The pumping function of the lotion pump. The characteristic of the lotion pump is that it can pump out the same volume of liquid every time for consumers to use, so the pumping function is also one of the important requirements. In the manufacturer, the most intuitive way to verify this function is: open the lotion pump and press down the press head to the end point of the stroke, block the liquid inlet of the main body (cylinder Housing) with the finger of the other hand, and release the press The head makes it bounce back naturally, and the skin on the surface of the finger will feel sucked (commonly known as "suction"), and the lotion pump can even be hung upside down on the finger. This is one of the main ways for the manufacturer to confirm whether the pump out function is intact.

The working principle of the lotion pump is based on Boyle's law in a high-level concept: for a fixed amount of gas in a closed container, the pressure and volume of the gas are inversely proportional to each other at a constant temperature. "The formula is: P1V1=P2V2. The popular understanding is: in a sealed container, the increase in volume leads to a decrease in pressure (suction/suction process), and the decrease in volume leads to an increase in pressure (liquid discharge process).

Generally, lotion pumps are composed of 6-7 injection molded parts (a few products are composed of 4~5 injection molded parts), plus other accessories, such as glass beads (plastic beads, or valve plates), springs, straws, gaskets, etc., a total of About 9~12 parts. However, the basic functions of the product have not changed significantly.