The contents of vacuum bottles can be completely separated from the air, avoiding the oxidation and deterioration of products and breeding of bacteria, and upgrading their products with the concept of high technology. The vacuum bottle on the prevailing market is composed of a cylinder and a piston ellipsoid placed at the bottom of the container. Its design principle is to use the force of the spring to shrink the air into the bottle, causing the vacuum state, and using the atmospheric pressure to push the piston forward of the bottle bottom. But because of the spring force and the atmospheric pressure can not be given enough power, so the piston is not with the bottle wall attached tightly, otherwise the piston will be due to the resistance is too large to rise ahead; conversely, if you want to move forward and prone to piston leakage, so the vacuum bottle manufacturers of professional requirements are very high.
The introduction of vacuum bottle conforms to the latest development trend of skin care products, and can effectively protect the fresh quality of the products. However, because of the complex structure and high cost of vacuum bottles, the utilization of vacuum bottle packaging is limited to only a limited number of products, which can not be fully rolled out in the market to meet the needs of different grades of skin care products packaging.
While focusing on the protection and decoration of skin care products, manufacturers begin to focus on developing the functionality of skin care packaging, so that the concept of "fresh", "natural" and "preservative free" is worthy of the name.