So far, stand-up pouches have been pointed out to be one of the classics of contemporary packaging bags. It has many advantages, such as improving product grades, improving the visual effect of supermarket shelves, portability, easy to use, waterproof, moisture-proof, anti-oxidation and sealing sex. There are the following five types of stand-up bags, and Shenzhen yltpacking will give you an analysis below. 1. Ordinary stand-up pouch: Generally speaking, the stand-up pouch adopts the four-side sealing method, which cannot be closed from the beginning, nor can it be opened repeatedly. This stand up zipper bag is commonly used in the industrial products industry. 2. Suction nozzle self-supporting packaging bag: it can be closed from the beginning, and then opened repeatedly. It can be considered as a combination with a normal neck. This product is usually used for packaging daily necessities, and is used to hold liquid, colloid, semi-solid products, etc. Such as drinks, shower gel, shampoo, ketchup, cooking oil, jelly, etc. 3. Zipper self-supporting packaging bag: it can be closed from the beginning, and then opened repeatedly. Since there is no closure by the zipper method, the closure strength is limited. Therefore this method is not suitable for packaging liquids and volatile substances. According to different edge sealing methods, it can be divided into four edge sealing and three edge sealing. Four-side sealing means that the product packaging has a layer of general side sealing in addition to the zipper seal when it leaves the factory. When in use, the general edge banding should be torn first, and then use the zipper to complete repeated edge banding and opening. The method solves the defect that the edge sealing strength of the zipper is small and unfavorable for transportation. The three side seals are directly sealed by zippers, which are usually used to contain lightweight products. Stand-up zipper bags are usually used to pack some light solids, such as candies, biscuits, jellies, etc. But the four-sided stand-up pouch can be used to pack heavier products, such as rice, cat litter, etc. 4. Mouth-like self-supporting packaging bag: the present invention combines the convenience of self-supporting bags and suction nozzles with the low cost of ordinary self-supporting bags. That is to say, the function of the suction nozzle is completed by the shape of the bag body itself. However, the mouth stand-up pouch cannot be resealed and opened, so it is usually used for packaging single-use liquid, gel and semi-solid products, such as beverages and jellies. 5. Special-shaped stand-up packaging bags: That is to say, new stand-up bags of various shapes are changed on the basis of traditional bag types according to packaging requirements, such as waist closure design, bottom deformation design, handle design, etc. With the progress of society, the improvement of people’s aesthetic level and the intensification of competition in all walks of life, planning and printing have become more and more colorful, and there are more and more ways of expression. The development of special-shaped stand-up bags has a tendency to gradually replace traditional stand-up bags. The above is all about the “analysis of 5 kinds of self-supporting packaging bags”.