What is a plastic screw lotion pump and how does it work?

The plastic screw lotion pump is a dispensing device commonly used in liquid product packaging. It is widely used in cosmetics, personal care products, detergents and some pharmaceutical packaging. This pump usually consists of several basic parts such as a plastic shell, a screw cap, a pump head and a straw. Its main function is to dispense the liquid in the bottle, such as lotion, shampoo, skin care products, etc., through the nozzle by pressing the pump head. The plastic spiral lotion pump can not only effectively control the amount of liquid dispensed each time, but also avoid unnecessary waste, ensuring that users can use the product conveniently and accurately.

The working principle of the plastic spiral lotion pump is relatively simple, but very efficient. When the user presses the pump head, the spring or pressure system inside the pump is compressed, driving the liquid to flow out through the nozzle of the pump head. The pump head is usually designed with a "spiral" mechanism, which can help the liquid flow out more smoothly. It not only avoids liquid overflow or irregular outflow, but also ensures that the amount of liquid dispensed each time is basically the same. This design makes the plastic spiral lotion pump particularly suitable for products such as lotions, viscous shampoos and conditioners. It can accurately dispense such liquids without waste.

In addition to the spiral structure, plastic spiral lotion pumps usually use sealing rings or other airtight designs to ensure that the liquid does not leak when not in use. This sealing design not only prevents the volatilization of the liquid in the bottle, but also prevents the outside air from entering, thereby extending the shelf life of the product. The design of the screw cap makes the connection between the pump and the bottle mouth very stable. This tight combination can effectively prevent the pump from leaking during transportation or storage.

Whenever the user releases the pressure, the liquid in the bottle is sucked into the pump chamber through the straw or atmospheric pressure. This suction not only ensures the smooth entry of the liquid, but also ensures the efficient operation of the pump head every time it is used. In the case of continuous multiple uses, the pump can still maintain the stability of liquid distribution to avoid uneven liquid distribution or blockage.