1. Ordinary self-supporting bag:
And the general form of self-supporting bag adopts four-side sealing form, which can not be re-closed and reopened. This self-supporting bag is generally used in industrial supplies industry.
2. Stand-up pouch with nozzle:
The self-standing bag with a suction nozzle is more convenient for pouring or sucking the contents, and can be re-closed and repeatedly opened at the same time, which can be considered as a combination of the self-standing bag and the ordinary bottle mouth. This kind of self-supporting bag is generally used in daily necessities packaging, and is used to hold beverages, shower gel, shampoo, tomato paste, edible oil, jelly and other liquid, colloidal, semi-solid products, such as the famous Hi-Ci CiCi.
3. Stand-up pouch with zipper:
The self-standing bag with a zipper can also be re-closed and repeatedly opened. Since the zipper form is not closed and the sealing strength is limited, this form is not suitable for packaging liquids and volatile substances. According to the different edge sealing methods, it is divided into four edge sealing and three edge sealing. Four edge sealing means that the product packaging has a layer of ordinary edge sealing besides the zipper seal at the factory. When using it, you need to tear the ordinary edge sealing first. The zipper is used to achieve repeated sealing, and this method solves the disadvantage that the strength of the zipper sealing edge is not conducive to transportation. The three-edged edge is directly sealed with a zipper, which is generally used to hold lightweight products. Self-supporting bags with zippers are generally used to pack some light-weight solids, such as candy, biscuits, jelly, etc., but the four-edge self-supporting bags can also be used to package heavier products such as rice and cat litter.
4. Stand-up pouch with imitation mouth shape:
The mouth-like stand-up pouch combines the convenience of a stand-up pouch with a suction nozzle and the cheapness of an ordinary stand-up pouch. That is, the function of the suction nozzle is realized by the shape of the bag body. However, the self-standing pouches of the imitation mouth type cannot be reopened. Therefore, they are generally used for the packaging of single-use liquids, colloids, and semi-solid products such as beverages and jellies.
5. Special-shaped stand-up pouch:
That is, according to the needs of packaging, the new self-supporting bags of various shapes resulting from changes on the basis of traditional bag types, such as waist design, bottom deformation design, handle design, etc. It is the main direction of value-added development of self-supporting bags.
With the progress of society and the improvement of people's aesthetic level and the intensification of competition in various industries, the design and printing of stand-up bags have become more and more colorful, and their expressions are more and more. The development of special-shaped stand-up bags has gradually replaced the status of traditional stand-up bags. the trend of.