Bag-in-Box design is very flexible.It is composed of a inner bag with several layers of composite film, a functional wine valve and an outer packaging box mostly made of paper. Bag-in-box filling packaging is an economical and environmentally friendly storage solution for a wide range of liquid products, from beverages and water to detergents and chemicals. Using flexible packaging has multiple benefits for manufacturers. It maintains and protects product quality while extending shelf life, and lighter materials help reduce transportation and storage costs. Environmental rewards include fewer natural resources used in the production process, less consumer waste sent to landfills and fewer greenhouse gas emissions. Bag-in-Box design is very flexible.It is composed of a inner bag with several layers of composite film, a functional wine valve and an outer packaging box mostly made of paper.Currently the bag-in-box is most widely used in the field of wine packaging, and is challenging the traditional rigid container packaging. In today's market,it can be applied to liquid products such as milk, juice, wine, sauce and so on.