A self-supporting packaging bag is a packaging bag that can stand without any object regardless of whether it is opened or not. It can greatly improve the grade of the product, has good visual effects, is convenient to use, has good insurance and sealing properties, and can reduce the oxygen permeability and extend the product. Shelf life. What are the classification and characteristics of specific self-supporting packaging bags?
1. Ordinary self-supporting bag:
And the general form of self-supporting bag, which adopts the form of four edges, cannot be re-closed and reopened. This kind of self-supporting bag is generally used in the industrial supplies industry.
2. Stand-up pouch with suction nozzle:
The self-standing bag with a suction nozzle is more convenient to pour or suck the contents, and can be re-closed and re-opened at the same time. It can be considered as the combination of the self-standing bag and the ordinary bottle mouth. This stand-up pouch is generally used in packaging of daily necessities. It is used to hold beverages, shower gels, shampoos, ketchup, edible oil, jelly and other liquid, colloidal and semi-solid products, such as the well-known CiCi.
3. Stand-up bag with zipper:
The stand-up pouch with a zipper can also be re-closed and re-opened. Since the zipper form is not closed and the closing 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 two types: four edge sealing and three edge sealing. Four edge sealing refers to that the product packaging has a layer of ordinary edge sealing outside the zipper seal when it leaves the factory. Before use, the ordinary edge sealing must be torn apart. The zipper is then used to achieve repeated sealing and opening. This method solves the disadvantage that the strength of the zipper edge is not good for transportation. The three-edged edge is directly sealed with a zipper, which is generally used to hold lightweight products. Stand-up pouches with zippers are generally used to package some light-weight solids, such as candy, biscuits, jelly, etc. But four-edged stand-up pouches can also be used to package heavier products such as rice and cat litter.
4. Mock-up stand-up pouch:
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 imitation mouth-type stand-up pouch cannot be sealed repeatedly. Therefore, it is generally used for the packaging of disposable liquid, gel, and semi-solid products such as beverages and jellies.
5. Shaped self-supporting bag:
That is, according to the needs of packaging, the new self-standing bags of various shapes generated by changes based on the traditional bag type, such as waist design, bottom deformation design, handle design, etc. It is the main direction of the value-added development of self-supporting bags.
With the social progress and the improvement of people's aesthetic level and the intensification of competition in various industries, the design and printing of self-supporting bags have become more and more colorful, and their expressions have become more and more. The development of shaped self-supporting bags has gradually replaced the status of traditional self-supporting bags. the trend of.