The vacuum bottle pressure pump has no suction tube, so that the inner material can be completely isolated from the air, avoiding the oxidation and deterioration of the product due to contact with the air, and the breeding of bacteria, and its high-tech concept enhances the product level. The vacuum bottle in the market is composed of a cylinder into an ellipsoid container and a piston at the bottom.
Its design principle is to use the contraction force of the spring to prevent air from entering the bottle, resulting in a vacuum state, and to use atmospheric pressure to push the piston at the bottom of the bottle forward.
The vacuum bottle is filled by a vacuum filling machine.
The vacuum filling machine is a machine for filling the bottle under the pressure lower than the atmospheric pressure. It uses continuous vacuum suction to pump the product into the container. The continuous suction is a vacuum pump connected to a vacuum chamber and a special filling valve. produce.
The process of filling cosmetics is not a vacuum environment. After the finished cosmetics are filled into the container, the gas will be pumped away through the machine, so that the bacteria will lose the breeding ground for production. However, whether there are bacteria entering depends on the production process of the cosmetics and the preservation conditions during use.
Therefore, airless bottles have very high requirements for the professionalism of manufacturers.
Are all packages that seem sealed are airless bottles?
To judge whether it is a vacuum bottle or not, just look at the pores at the bottom of the bottle. Covering the exhaust holes will make it impossible to squeeze.