Usually the plastic layer is made of flat woven cloth with PP or PE as the base material, and the outside is made of refined white kraft paper or yellow kraft paper. Kraft paper is made of refined composite special kraft paper, which has the characteristics of high strength, good water resistance and beautiful appearance. It is one of the most popular packaging materials and is widely used in food, clothing, gifts and other industries. Composite packaging bags can be divided into back-sealed bags, three-side sealed bags, organ bags, zipper stand-up bags, four-side sealed bags, special-shaped bags, etc.
Stand-up pouch is laminated by PET/foil/PET/PE structure, and can also have other specifications such as 2 layers and 3 layers. According to the different products packaged, the oxygen barrier protective layer can be added as needed to reduce the oxygen permeability and prolong the shelf life of the product.
On the basis of ordinary stand-up pouches, we have launched more qual-seal flat bottom stand up pouch, which have the following advantages:
1. Vertical structure, can stand on the dry shelf, the square is flat, and the standing is stable.
2. Additional sealing zipper can be added to avoid the disadvantage that the organ bag type cannot be zippered.
3. A one-way exhaust valve can be attached, which can be used in coffee and other related industries.
4. The composite flexible packaging material can be combined to exert different negative barrier properties through the water and oxygen permeability properties of different materials.
Post time: Dec-05-2022