Five types of food packaging bags

A stand-up bag refers to a flexible packaging bag with a horizontal support structure at the bottom, which does not rely on any support and can stand on its own regardless of whether the bag is opened or not. The stand-up pouch is a relatively novel form of packaging, which has advantages in improving product quality, strengthening the visual effect of shelves, portability, ease of use, preservation and sealability. The stand-up pouch is laminated by PET/AL/PET/PE structure, and it can also have 2 layers, 3 layers and other materials of other specifications. It depends on the different products of the package. The oxygen barrier protection layer can be added as needed to reduce the oxygen permeability, extending the shelf life of the product.

So far, stand-up bags are basically divided into the following five types:

Ordinary stand up bag

The general form of stand-up pouch adopts the form of four sealing edges, which cannot be re-closed and repeatedly opened. This kind of stand-up pouch is generally used in the industrial supplies industry.

Self-supporting bag with zipper

Self-supporting pouches with zippers can also be re-closed and re-opened. Since the zipper form is not closed and the sealing strength is limited, this form is not suitable for encapsulating 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 in addition to the zipper seal when it leaves the factory. The zipper is then used to achieve repeated sealing and opening, which solves the disadvantage that the zipper edge sealing strength is small and is not conducive to transportation. The three-sealed edge is directly sealed with a zipper edge, which is generally used to hold lightweight products. Self-supporting pouches with zippers are generally used to package some light solids, such as candy, biscuits, jelly, etc., but four-sided self-supporting pouches can also be used to package heavier products such as rice and cat litter.

Imitation mouth-shaped stand-up bag

Imitation mouth stand-up pouches combine the convenience of stand-up pouches with spouts and the cheapness of ordinary stand-up pouches. That is, the function of the spout is realized by the shape of the bag body itself. However, the mouth-shaped stand-up pouch cannot be re-sealed. Therefore, it is generally used in the packaging of single-use liquid, colloidal and semi-solid products such as beverages and jelly.

Stand-up pouch with spout

The stand-up pouch with the spout is more convenient to pour or absorb the contents, and can be re-closed and re-opened at the same time, which can be considered as the combination of the stand-up pouch and the ordinary bottle mouth. This kind of stand-up pouch is generally used in the packaging of daily necessities, for beverages, shower gels, shampoos, ketchup, edible oils, jelly and other liquid, colloidal and semi-solid products.

Special-shaped stand-up bag

That is, according to the needs of packaging, new stand-up bags of various shapes produced by changing on the basis of traditional bag types, such as waist design, bottom deformation design, handle design, etc. It is the main direction of the value-added development of stand-up pouches at present.

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 forms 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.

Post time: Oct-28-2022