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The stand up pouch is a relatively new form packaging, which is advantageous in improving product quality, strengthening shelves visual effects, portability, ease of use, preservation, and sealing and other aspects. The stand up pouch is laminated by PET / foil / PET / PE structure, which can also be 2-layer, three-layer and other specifications material, which is determined according to the packaged different products. You may need to increase the oxygen barrier protection layer, reduce the oxygen transmission rate to extend the shelf life of the products.Stand up pouch application range:Stand-up pouch packaging is mainly used in juice drinks, sports drinks, bottled drinking water, suck jelly, condiments and other products. In addition to the food industry, the applications in cleaning products, cosmetics, medical supplies and other products have gradually increased.Classification of stand up pouch bags:So far, the stand-up pouch is basically divided into the following five types:1. Normal stand-up pouch: that is the general form stand-up pouch, which uses the form of four-edge sealing, cannot be re-closed and opened repeatedly. This kind of stand up pouch is generally used in industrial goods industry.2. Standing pouch with nozzle: standing pouch with nozzle more is convenient dumping or absorb contents. At the same time, it can be re-closed and repeatedly opened, which can be considered a combination of stand up pouch bags with ordinary bottle. Such stand-up pouch packaging is generally used to hold drinks in daily necessities, shower gel, shampoo, ketchup, cooking oil, jelly and other liquids, colloids, semi-solid products, such as the famous STRONG CiCi, etc.3. Stand up pouch with zipperStand up pouch with zipper can also be re-closed and repeatedly open, using zipper form is not closed and closed strength is limited, so this form is not suitable for packaging liquid and volatile substances. According to different edge sealing ways, it is divided into four-edge sealing and three-edge sealing two kinds. Four-edge sealing means there is a layer of ordinary sealing at the zipper closure before the product packaging shipped out of the factory. When using, you should first tear the ordinary edge, reuse the zipper to achieve repeated opening and closing, this approach solves the disadvantage of the small zipper strength not conducive to transport. Three-edge sealing directly uses the zipper edge as the sealing, which is generally used to hold lightweight products. The stand-up pouch with zipper is generally used for packing some lightweight solid, such as candy, cookies, jelly, four edge stand-up pouches can be used in packaging rice, cat litter and other heavier products.4. Imitation mouth stand up bagThe imitation lip stand up bag combines the convenience of stand-up pouch with suction nozzle and cheap price of common stand-up pouches, to realize nozzle function through the shape of the bag body itself. Imitation mouth stand up pouch cannot be repeated sealed and opened, therefore, it is generally used in beverages, jellies and other one-time use liquid, colloidal, semi-solid products packaging.5. Profiled stand up pouch: According to the packaging need, new standing pouches produced on the basis of conventional bag type changes, such as the waist design, the bottom deformation design, handle design. It is the main direction of the current stand-up pouch value-added development.