Cosmetic Airless Bottle

The contents of the cosmetic airless bottle can be completely isolated from the air, which can prevent the product from oxidizing and degenerating, breeding bacteria, and improve the product file with its high-tech concept. The popular vacuum bottle on the market consists of a cylindrical ellipsoid container plus a piston mounted on the bottom. It is designed to use the spring's force of contraction to keep air out of the bottle, creating a vacuum, while using atmospheric pressure to push the piston at the bottom of the bottle forward. However, because the spring force and atmospheric pressure cannot give enough force, the piston cannot fit too tightly with the bottle wall, otherwise the piston will not be able to rise and advance due to excessive resistance. On the contrary, if the piston is easy to move forward and leakage is easy to occur, so the vacuum bottle has a very high professional requirement for manufacturers.