Airless pump bottles are a major innovation in cosmetic and skincare packaging, and in recent years, more and more skincare brands have chosen vacuum pump bottles for their product packaging. Unlike traditional pumps that use straws or tubes to dispense products, airless pump bottles utilize a vacuum mechanism to extract the contents. This design minimizes air exposure, ensuring the product remains fresh and contamination-free. Widely used in creams, lotions, serums, and other high-viscosity formulas, airless pump bottles are favored for their ability to maintain the integrity and efficacy of cosmetics.

Components of an airless pump bottle

Piston airless pump bottles are the most common type of airless pump bottle. This type of airless bottle has a piston installed inside the bottle, and between the press head to produce a closed space, the contents are stored in this space, by pressing the airless pump press head, prompting the space to make an airless state, and the use of external atmospheric pressure to promote the movement of the piston, to distribute the contents of the airless pump through the liquid outlet hole.

The key point of this technology lies in the piston and the wall of the bottle: the piston and the wall of the bottle can not be too tight or too loose, too tight easy to appear the piston can not be moved so that the liquid can not be pumped, too loose is prone to leakage phenomenon. Therefore, it is limited by the changes in the shape of the package, common round or oval, and other very regular packaging forms.

No.	Part Name	Material
1	Outer cover	PP
2	Head cap	PP
3	Valve stem	PP
4	Large ring	PP
5	Spring	2DI
6	Bayonet seat	PP
7	Gasket	PE
8	Small piston	LDPE
9	Valve needle	POM
10	Spring sleeve	LDPE
11	Pump body	PP
12	Inner bottle	PP
13	Large piston	LDPE
14	Base	PP