So far, Doypack is basically divided into the following five types:
1. General Doypack
And the general form of Doypack, the use of four-edge form, can not be re-closed and repeated opening, this doypack is generally used in industrial supplies industry.
2. Doypack with suction nozzle:
The doypack with the suction nozzle is more convenient to pour or absorb the contents, and can be re-closed and repeated open, can be considered as a combination of doypack and ordinary bottle.
This kind of doypack is generally used in commodity packaging, used for holding drinks, shower gel, shampoo, tomato sauce, edible oil, jelly and other liquids, colloid, semi-solid products, such as the famous Lang CiCi.
3. Doypack with Zipper
Zipper Doypack can also be re-closed and repeated open, due to the use of zipper form is not closed and closed strength is limited, so this form is not suitable for packaging liquids and volatile substances. According to the method of sealing edge and divided into four edge and three edge two, four edge refers to the product packaging in the factory zipper closure outside there is also a layer of ordinary sealing, the use of the ordinary sealing edge, and then use the zipper to achieve repeated closure, this method solves the zipper edge strength is not conducive to transport shortcomings. And three edge is directly with the zipper sealing edge as a seal, generally used for light-weight products.
Doypack with zipper is generally used for packaging some light solids, such as candy, biscuits, jelly, etc., but the four edge of the doypack can also be used for packaging rice, cat sand and other heavier products.
4. Doypack of The Imitation mouth type
The Imitation mouth type Doypack combines the convenience of the doypack with the suction nozzle with the cheap of the ordinary doypack. The function of the nozzle is realized by the shape of the bag body itself.
But the imitation of the mouth type of doypack can not be repeated, therefore, generally used in beverages, jelly and other disposable liquid, colloid, semi-solid products packaging.
5. Alien Doypack
That is, according to the packaging needs, on the basis of the traditional bag type of various shapes of new doypack, such as the waist design, the bottom deformation design, the handle design is currently the main direction of Doypack value-added development.
With the improvement of social progress and people's aesthetic level as well as the competition of various industries, Doypack's design printing becomes more and more colorful, its manifestation is more and more, and the development of special shaped doypack has gradually replaced the traditional doypack status trend.