customized wholesale plastic stand up bag manufacturer, supplier, factory, exporter for sale
There are many packaging classifications of products. According to the technical classification, they can be divided into: moisture-proof packaging, waterproof packaging, mildew proof packaging, fresh-keeping packaging, quick-frozen packaging, breathable packaging, aseptic packaging, inflatable packaging, vacuum packaging, etc. All the above packaging bags are made of different composite materials, and their packaging characteristics correspond to the requirements of different products, which can effectively maintain the quality and stable function of the product itself.
Stand up bags are basically divided into the following five types:
Ordinary stand up bag:
That is, the general form of stand up bag adopts the form of four edge sealing, which can not be re closed and re opened. This kind of stand up bag is generally used in the industrial supplies industry.
Stand up bag with suction nozzle:
The stand up bag with suction nozzle is more convenient to dump or absorb the contents, and can be closed and opened again. It can be considered as the combination of stand up bag and ordinary bottle mouth. This stand up bag is generally used in the packaging of daily necessities, and is used to contain liquid, colloidal and semi-solid products such as beverages, shower gel, shampoo, ketchup, edible oil and jelly.
Stand up bag with zipper:
The stand up bag with zipper can also be re closed and re opened. Because 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 different edge banding methods, it is divided into four edge banding and three edge banding. Four edge banding means that there is a layer of ordinary edge banding in addition to the zipper sealing when the product package leaves the factory. When in use, the ordinary edge banding needs to be torn off first, and then the zipper is used to realize repeated sealing. This method solves the disadvantage that the zipper edge banding strength is small and is not conducive to transportation. The three edge sealing directly uses the zipper edge sealing as the sealing, which is generally used to hold light products. The stand up bag with zipper is generally used to pack some light solids, such as candy, biscuits, jelly, etc., but the stand up bag with four edges can also be used to pack heavy products such as rice and cat litter.
Mouth like stand up bag:
The mouth like stand up bag combines the convenience of stand up bag with suction nozzle with the cheapness of ordinary stand up bag. That is, the function of the suction nozzle is realized through the shape of the bag body itself. However, mouth like stand up bags cannot be sealed and opened repeatedly. Therefore, they are generally used in the packaging of disposable liquid, colloidal and semi-solid products such as beverages and jelly.
Special shaped stand up bag:
That is, according to the packaging needs, new stand up bags of various shapes are produced by changing on the basis of traditional bag types, such as waist retraction design, bottom deformation design, handle design, etc. It is the main direction of value-added development of stand up bags.
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