Airless bottle The contents of the airless bottle can b […]
The contents of the airless bottle can be completely isolated from the air to prevent the product from oxidizing and deteriorating due to contact with the air, breeding bacteria, and to promote the product level with its high-tech concept. airless bottles commonly used in the market are composed of a cylindrical ellipsoidal container and a piston placed at the bottom.
Its design principle is to use the contraction force of the spring, and not allow air to enter the bottle, causing a airless state, and 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 be unable to rise and advance due to excessive resistance; otherwise, if the piston is to advance easily and it is prone to leakage, Therefore, the airless bottle has very high requirements on the professionalism of the manufacturer.
The introduction of airless bottles conforms to the latest development trend of skin care products and can effectively protect the fresh quality of products. However, due to the complicated structure and high cost of airless bottles, the use of airless bottle packaging is limited to a limited number of products and cannot be fully rolled out on the market to meet the needs of different grades of skin care products.
While paying attention to the protection and decoration of skin care packaging, manufacturers began to focus on the development of skin care packaging functionality, so that the concept of "fresh", "natural", and "preservative-free" of the products is true.
AS, PP and PMMA are three different plastic materials
The AS is harder and the PP softer is not very suitable for airless bottles.
Acrylic bottles are better and more common. They are better than AS in terms of wear resistance, transparency, and solvent resistance.