The requirement for puffed food snack food bags as below :

1, good air tightness, requiring good heat sealing bag inflatable strength;

2, good oxygen barrier, to prevent the outside oxygen into the inflatable bag in the corrosion of food, but also to prevent the bag of nitrogen overflow, the formation of "deflated bag" problem;

3, good oil resistance and light resistance properties, so the quality of aluminum composite film control;

4, reasonable packaging cost control, so thinning and structural material costs are also the focus of packaging enterprises to consider.