Aseptic Bag-In-Box With Butterfly Valve(High Barrier, Evoh)

Industry knowledge

Aseptic Bag-in-Box with Butterfly Valve (High Barrier, EVOH): Why is high barrier performance so important?

High barrier performance is one of the core advantages of aseptic bag-in-box with butterfly valve (high barrier, EVOH), which makes this product popular in many industries.
EVOH (ethylene-vinyl alcohol copolymer) material is the key to the high barrier performance of aseptic bag-in-box with butterfly valve. EVOH has extremely low gas permeability, and its barrier performance is far superior to traditional packaging materials such as PE (polyethylene) and PP (polypropylene). Specifically, EVOH can effectively block the permeation of gases such as oxygen, carbon dioxide, and nitrogen, which is especially important for packaging products that are sensitive to gases.
Oxygen is one of the main factors that cause food and medicine to deteriorate. EVOH material can significantly reduce the permeability of oxygen, maintain a low-oxygen environment inside the package, and extend the shelf life of the product. For example, liquid foods such as juice and dairy products will undergo oxidation reactions after contact with oxygen, resulting in a poor taste or even deterioration. The use of aseptic bag-in-box with butterfly valve can effectively prevent this process and keep the food fresh and flavorful.
In addition to oxygen, the permeation of carbon dioxide and other gases can also affect the quality of certain products. EVOH material also has excellent barrier properties for gases such as carbon dioxide, which can prevent gases from entering or escaping the package. For example, some carbonated beverages or chemical reagents have strict requirements for gases, and aseptic bag-in-box with butterfly valve can ensure the stability and effectiveness of these products during storage and transportation.
Aseptic bag-in-box with butterfly valve usually adopts a multi-layer composite structure to further enhance its barrier properties. This structure generally includes an outer layer of PE or PA (nylon), an intermediate layer of EVOH and an inner layer of PE. Each layer of material has its own function and together achieves an efficient gas barrier effect.
The outer layer material such as PE or PA mainly provides mechanical strength and chemical corrosion resistance. This layer of material can protect the intermediate layer EVOH from external physical damage and chemical erosion, ensuring the integrity and stability of the entire package.
As an intermediate layer, EVOH is the core of achieving high barrier properties. The addition of EVOH material greatly improves the gas barrier properties of the entire package, which can effectively prevent the penetration of gases such as oxygen and carbon dioxide.
The inner layer PE material is mainly in direct contact with the contents of the package, providing food-grade safety and good heat sealing performance. This layer of material not only ensures the safety of the product, but also achieves a reliable seal through the heat sealing process to prevent leakage of the contents.
In the food industry, oxygen and moisture are the main factors that cause food to deteriorate. Aseptic bag-in-box with butterfly valve can effectively block the entry of oxygen and moisture and extend the shelf life of food. For example, products such as juice, dairy products and sauces can maintain freshness and flavor for a longer time in this packaging, reduce food waste and improve economic benefits.
Aseptic bag-in-box with butterfly valve (high barrier, EVOH) has excellent high barrier properties. Through the application of multi-layer composite structure and EVOH material, it achieves efficient barrier to gases such as oxygen and carbon dioxide, extends the shelf life of products, and ensures the safety and effectiveness of products. With the continuous advancement of technology, this packaging form will be further optimized and promoted in the future, providing more efficient, safe and environmentally friendly packaging solutions for various industries.