When the airless bottle is in use, hold down the top, a […]
When the airless bottle is in use, hold down the top, and the bottom piston will run up, squeezing the contents out. When the contents of the bottle are used up, the piston will go to the top. When the piston reaches the bottom, the vacuum bottle can be removed. Disassemble the pump head and other parts and install it again, and you can use it repeatedly.
The vacuum bottle uses the contraction force of the spring to prevent outside air from entering the vacuum bottle. Use atmospheric pressure to push the piston at the bottom of the bottle forward. The contents of the airless bottle can be completely isolated from the air to prevent the product from being oxidized and deteriorated 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, creating a vacuum state, and use atmospheric pressure to push the piston at the bottom of the bottle forward. However, due to spring force and atmospheric pressure, sufficient force cannot be given.
Therefore, the piston must not fit too tightly with the bottle wall, otherwise the piston will not be able to move forward due to excessive resistance; on the contrary, if the piston is to move forward easily and material leakage is prone to occur, the vacuum bottle requires very high professionalism from the airless bottle manufacturer. Dalica airless bottle keeps the inner side away from out air and germs, so the skincare ingredients could be preserved much longer.