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The sealing performance of airless pump bottles is one of its key features in cosmetic packaging and plays a vital role in protecting the quality and stability of cosmetics. The superiority of sealing performance directly affects the shelf life of the product, the stability of active ingredients and user experience.
The sealing performance of the airless pump bottle is based on its unique structural design. A typical airless pump bottle structure includes a pump head, piston and bottle body. When the user presses the pump head, the piston moves and creates a negative pressure area inside the bottle. The formation of this negative pressure area prevents air from entering the bottle, effectively isolating the connection between the external environment and the cosmetics inside the bottle. This design ensures that the cosmetics in the bottle can remain stable in an oxygen-free environment, reducing the risk of product contamination by external factors.
Airless pump bottles also rely on precision pistons and sealing rings for sealing performance. Pistons are typically made from high-quality, corrosion-resistant materials to ensure smooth, leak-free movement. At the same time, the selection of the sealing ring is also crucial. Elastic materials, such as silicone or polyethylene, are usually used to ensure that it can closely fit the bottle during the pumping process and prevent gas penetration. The design and material selection of these components are to maximize the sealing of the airless pump bottle, thus ensuring the quality of the cosmetics.
Airless pump bottles also need to meet the special needs of different cosmetics in terms of sealing performance. For example, some skin care products or essences containing high concentrations of active ingredients have stricter requirements for sealing performance. The design of the airless pump bottle ensures that these high-efficiency ingredients are not affected by external factors such as oxygen and moisture, thereby maintaining their original efficacy in the product. This superior sealing performance makes airless pump bottles an ideal packaging option for high-end skin care products.
In practical applications, the sealing performance of airless pump bottles also undergoes strict quality control. The manufacturer will ensure that each airless pump bottle has excellent sealing performance through rigorous testing and inspection methods. This may include multiple aspects of testing such as antioxidant testing, sealing performance testing, pump head stability testing, etc. Only through these professional tests can airless pump bottles achieve high standards of sealing performance and meet the stringent requirements of cosmetic packaging.
