How does the sealing performance of plastic valves ensure the stability and safety of liquid products during long-term storage?

In Bag-In-Box packaging, the sealing performance of plastic valves is crucial to the long-term storage stability and safety of liquid products. The following are key factors to ensure sealing performance:

Application of high-performance plastic materials
High-performance plastics such as PTFE (polytetrafluoroethylene), PEEK (polyetheretherketone) and PVDF (polyvinylidene fluoride) are widely used in the manufacture of plastic valves. These materials have excellent chemical corrosion resistance, high temperature resistance and low friction coefficient, and can maintain structural integrity under extreme conditions, thereby ensuring that the valve will not fail to seal due to material aging or chemical erosion during long-term storage.

Precision sealing design
Plastic valves in Bag-In-Box packaging usually adopt a precision-machined sealing design that can fit tightly with the valve body to prevent liquid leakage. In addition, these valves also have a self-sealing function, that is, the valve can automatically close under the pressure of the liquid, further enhancing the sealing effect.

Mechanism to prevent air ingress
Plastic valves not only need to prevent liquid leakage, but also need to prevent air from entering the packaging bag to avoid liquid oxidation or deterioration. By designing a one-way flow valve structure, air can be effectively prevented from entering the packaging system, thereby extending the shelf life of liquid products.

Quality control that meets industry standards
In the Bag-In-Box packaging industry, plastic valves need to meet strict industry standards to ensure their sealing performance and safety. For example, valves must pass strict leakage tests and use high-quality raw materials and advanced manufacturing processes during production.

User-friendliness and maintenance needs
The design of plastic valves also takes user-friendliness and maintenance needs into consideration. The use of high-performance plastic materials enables valves to have a long service life and low maintenance frequency, reducing potential risks caused by frequent replacement or repair of valves.