How Did the Foam Pump Develop?

In fact, hydraulic pump packaging has conquered the cosmetic world. The fact that tens of millions of such packages appear in major cosmetic counters every year is enough to prove it. Foam pumps are commonly used in the packaging of hand sanitizers, cleaners, and other products. Its related products mainly include foam soap dispenser pump, foaming hand pump and foaming hand wash pump.

The Principle of Foam Pump Head

Foam pump heads are made using atmospheric pressure.

When the pump head is pressed, the spring compresses and the piston descends, expelling the air in the reservoir chamber.

Press the pump head again, after releasing the hand, the spring in the pump head will return to its original state, the piston will rise, and a vacuum will be formed in the liquid storage chamber to generate negative pressure. At this time, the pressure in the liquid storage chamber is small, and the pressure in the container is large. Due to the pressure difference, the atmosphere will force the liquid around the mouth of the reservoir into the reservoir. When you press again, the liquid is squeezed out.

The Development History of Foam Pump

Before the invention of the foam pump, it was common to use aerosol-type products to spray foam, that is, to use liquefied gas to expand the spray or use a foaming agent to spray a colloid to form foam. The real foam pump as a daily chemical product is the acupressure foam pump launched by Airspray in the Netherlands in 1995.

The body of the acupressure foam pump consists of an air pump and a liquid pump. The liquid and air in the pump body are fully mixed and discharged. The sprayed foam is of good quality.

Compared with foam aerosol products, acupressure foam pumps have significant advantages. It is understood that the former needs to be filled with projectiles, which not only pollutes the environment but also has the risk of being flammable and explosive. The shiatsu foam pump is low cost and reusable, mainly due to the fact that it does not require metal containers and sealed gas filling equipment. The liquid formulations of shiatsu foam pumps are mostly water-based and non-volatile organic compounds in nature. Additionally, Shiatsu foam pumps come in various shapes of containers, including square, triangular, oval, and more. This type of container has no pressure before use, so there are many container materials, such as ceramic foaming soap dispenser, plastic foaming soap dispenser and brushed nickel foaming soap dispenser.

Structural Description of Foam Pump Products

The foam pump head is a non-inflating hand pump head, which does not require air to generate foam, and only needs to be lightly pressed to produce quantitative high-quality foam. Foam pumps are generally equipped with dedicated cylindrical vacuum bottles. Hand-on applicators are often used on products such as cleaners.

From the internal structure of the product, the acupressure foam pump is mainly divided into the following five parts: the driving part, the liquid storage chamber, the air storage chamber, the pipeline part and the gas-liquid mixing chamber.

The driving part transmits the force to other parts inside the product through the pressure head, and realizes the pressure rebound cycle of the foam pump and the liquid discharge through the spring.

The liquid storage chamber is the process of pressing the head down to squeeze the liquid storage chamber, and the liquid in the bottle is sucked into the liquid storage chamber according to the rebound of the head. In addition, the internal spring acts as a rebound in the reservoir.

Only air is sucked in and squeezed out in the plenum.

The piping section is the connection between the liquid in the bottle and the entire pump, and the passage for the liquid to enter the reservoir. The purpose is to ensure that the liquid in the bottle can be quickly drained and reduce the residual amount of liquid.

When the pump head is pressed down, the liquid in the liquid storage chamber, the liquid in the gas storage chamber and the air are fully mixed and pressurized in the gas-liquid mixing chamber. A fine foam is formed through the dense mesh of the airflow mixing chamber.