Gusset Coffee Packing Bag With Air Valve Our side gusseted bag is the ideal packaging option for ground or whole coffee beans. One-way degassing valves are essential for coffee packages due to the carbon dioxide that is released from freshly roasted coffee beans. These valves keep your coffee fresh and prevent the bags from bursting, as well as allowing your customers to smell your delicious coffee beans. They are also useful for powdered mixes, nuts, loose-leaf teas, and more. The narrow gussets make these bags perfect for easy access. Advantages of Flexible Packaging Bags. Flexible packaging can meet the diversified requirements of goods, it can better protect goods and improve the shelf life of goods. It has a variety of functional materials to meet the various preservation conditions of goods. Flexible packaging is especially suitable for sales packing, vivid printing makes the product information transmi…