| abstract |
The utility model provides an air adjusting type packaging bag and belongs to the technical field of storage. The air adjusting type packaging bag solves the problems that an air adjusting type packaging bag is not good in barrier property, and conditions of packaged articles in the bag can not be observed. The air adjusting type packaging bag comprises a front sealing face and a rear sealing face which are connected to form a sealed cavity. The air adjusting type packaging bag is characterized in that the front sealing face comprises a first PE layer, an aluminum coated layer, a PET layer and a CPP layer from outside to inside, and the rear sealing face comprises a second PE layer, an ink layer and a coextrusion PVDC layer from outside to inside. PVDC is used to form the rear sealing face, energy consumption is reduced, environment is protected, and the packaging bag is made to be perspective. The air adjusting type packaging bag is simple in structure and good in barrier property, the shelf life of fruits and vegetables can be effectively prolonged, and the inside of the packaging bag can be visually observed. |