The contents of the airless bottle can be completely isolated from the air, avoiding the oxidative deterioration of the product due to exposure to air, breeding bacteria, and upgrading the product with its high-tech concept. The airless bottle that is used in the market consists of a cylindrical ellipsoidal container plus a piston placed at the bottom. Its design principle is to use the contraction force of the spring, and not let the air enter the bottle, causing the airless state, and use the atmospheric pressure to push the piston of the bottom of the bottle to advance. However, due to the spring force and atmospheric pressure, sufficient force cannot be given, so the piston cannot fit too tightly with the bottle wall, otherwise the piston will not be able to rise and advance due to excessive resistance; on the contrary, if the piston is easy to advance and is prone to leakage, Therefore, airless bottles have very high requirements for the professionalism of cosmetic bottle manufacturers like dalicapkg.
1, light weight
The plastic of the airless bottle is a lighter material with a relative density between 0.90 and 2.2. Obviously, can plastic float to the surface? In particular, foamed plastics have a lighter texture and a lighter density with a relative density of only 0.01. This property allows plastics to be used in the production of products that require a reduction in their own weight.
Cosmetic container
2, excellent chemical stability
Most plastics have good corrosion resistance to acids, alkalis and other chemicals. Especially known as the plastic king of PTFE (F4), its chemical stability is even better than gold, put in "Aqua regia" boiled for more than ten hours will not deteriorate. Due to its excellent chemical stability, F4 is an ideal corrosion resistant material. For example, F4 can be used as a material for conveying corrosive and viscous liquid pipes.
3, excellent electrical insulation properties
Ordinary plastics are poor conductors of electricity, and their surface resistance and volume resistance are very large, which can be represented by numbers to 109 to 1018 ohms. The breakdown voltage is large and the dielectric loss tangent is small. Therefore, plastics have a wide range of applications in the electronics and machinery industries. Such as plastic insulated control cables.
The contents of the airless container of the cosmetic plastic container can be completely isolated from the air, avoiding the oxidative deterioration of the product due to contact with the air, breeding bacteria, and upgrading the product file with its high-tech concept. The airless bottle that is used in the market consists of a cylindrical ellipsoidal container plus a piston placed at the bottom. Its design principle is to use the contraction force of the spring, and not let the air enter the bottle, causing the airless state, and use the atmospheric pressure to push the piston of the bottom of the bottle to advance. However, due to the spring force and atmospheric pressure, sufficient force cannot be given, so the piston cannot fit too tightly with the bottle wall, otherwise the piston will not be able to rise and advance due to excessive resistance; on the contrary, if the piston is easy to advance and is prone to leakage, Therefore, airless bottles have very high requirements for the professionalism of the manufacturer.
The introduction of airless bottles for cosmetic containers conforms to the new development trend of skin care products and can effectively protect the fresh quality of products. However, due to the complicated structure of the airless bottle and the high cost, the use of the airless bottle packaging is limited to a limited number of products, and cannot be fully spread in the market to meet the needs of different grades of skin care packaging. While paying attention to the protective and decorative nature of skin care products packaging, manufacturers began to focus on the development of the functionality of skin care packaging, so that the concept of "fresh", "natural" and "preservative-free" is worthy of the name.