Oblique Valve Paper-plastic Ccomposite Bag One of the main advantages of the Oblique Paper Plastic Valve Bag is its hybrid composition. The outer paper layer provides rigidity, good stackability, and good surface printing for branding, while the inner plastic liner offers moisture resistance and durability. This combination ensures long-lasting protection, especially for sensitive or high-value materials. The oblique valve opening is designed for high-speed filling and self-closing capabilities. This design not only increases filling efficiency but also helps reduce dust generation during packaging. It is compatible with great majority valve bag filling machines, making it ideal for high-volume production environments. https://www.valvebagfactory.com/product/paperplastic-composite-bag/oblique-paper-plastic-valve-bag.html