Huadi customized 1L, 3L, 5L bag in box transparent plastic bag for water, juice with cap

Enhanced convenience. As consumers seek convenience in their purchasing decisions, bag-in-box packaging is evolving to meet these demands. Innovations such as easy-pour spouts and resealable designs are becoming more common, making access and storage effortless. This trend is particularly appealing to busy households and on-the-go consumers.

The structure of a bag in box can be simply divided into two parts: an outer box and an inner bag.

Outer box (box part)

Material: The outer box is usually made of corrugated cardboard (or other sturdy cardboard material), which has good strength and compressive strength. Cardboard is usually treated with a waterproof coating to ensure that the product is protected during transportation.
Function: The main function of the outer box is to protect the inner bag and prevent external impact or compression from damaging the bag. Paper boxes can also provide a certain display space for printing product information, brand logos, and usage instructions.

Inner bag (bag part)

Material: The inner bag is generally made of multiple layers of composite materials such as polyethylene, polypropylene, nylon, and aluminum foil composite film. These materials provide excellent barrier function, which can prevent external factors such as air, moisture, and light from affecting the product. Composite materials can effectively maintain the quality and freshness of liquids.
Function: The main function of the inner bag is to directly store liquid products, provide sealing, prevent leakage, and achieve convenient pouring and distribution through the shape and material design of the bag.