Airless bottle
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 is used to upgrade the product. The vacuum bottle 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, resulting in a vacuum state, and to use 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 be too tightly attached to 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 it is prone to material leakage, Therefore, airless bottles have very high requirements for the professionalism of manufacturers.
The introduction of the airless bottle conforms to the latest development trend of skin care products and can effectively protect the freshness of the product. However, due to the complex structure of the vacuum bottle and the high cost, the use of vacuum bottle packaging is limited to a limited number of categories of products and cannot be fully deployed in the market to meet the needs of different grades of skin care products.
While attaching importance to the protection and decoration of skin care product packaging, manufacturers began to focus on the development of skin care product packaging functionality, making the concept of "fresh", "natural" and "preservative-free" worthy of the name.