An inner bag for bag-in-box comprises a sealed oil bag and a filling port arranged on the oil bag, and a sealing device arranged on the filling port; the oil bag includes an outer bag and an inner bag , the inner bag is made of PE material, and the outer bag is made of nylon and PE. The inner bag of the utility model is composed of two layers: the inner bag and the outer bag, which enhances the flexibility and thickness of the inner bag , the structure is simple and reasonable.
Another type of inner bag is usually an opaque flexible packaging bag, which is composed of two layers of uncompounded material on one side. The outer layer is a composite film, and the inner layer is a single layer of PE. The outer layer composite material is usually PET/AL/PE, NY/EVOH/PE, PET/VMPET/PE, etc.
The choice of this special structure is mainly due to the fact that the contents of the package are liquids with strong fluidity. Once a certain layer of material is damaged, there can also be a second layer of protection. At the same time, the protection of the two layers of materials can slow down the flow of liquid during transportation. It has a good protective effect on the impact of packaging bag materials.
Post time: Oct-10-2022
