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home / news / industry news / Introduction of vacuum bottle of cosmetic packaging material knowledgeA vacuum bottle refers to a container that can isolate the gas from the outside temperature or a container that isolates external bacteria. Its contents can be completely isolated from the air, preventing the product from being oxidized and deteriorating due to contact with air, breeding bacteria, and improving the product grade with its high-tech concept. The vacuum bottle commonly used in the market is composed of a cylinder into an ellipsoid container and a piston placed at the bottom.
Its design principle is to use the contraction force of the spring to prevent air from entering the bottle to create a vacuum state, and to use atmospheric pressure to push the piston at the bottom of the bottle forward. However, since the spring force and atmospheric pressure cannot give enough force, the piston cannot be attached too tightly to the bottle wall, otherwise the piston will not be able to rise and move forward due to excessive resistance; on the contrary, if the piston is to be easy to move forward and material leakage is likely to occur, Therefore, the vacuum bottle has very high requirements for the professionalism of the manufacturer.
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