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The four-side sealing bag contains four sealing edges, which are like two pieces of film facing together to seal the four sides. This is the source of the four-side sealing bag.

1. Features of the four-side sealing bag:

(1) The product has a good appearance and three-dimensional effect. The product is packed in a cube shape, which can be used for food preservation, and it can be recycled many times to make full use of the packaging bag space.

(2) The unique four-side sealing bag design can effectively prevent bursting. The new printing process highlights the pattern design and trademark effect. Special trademarks or patterns can be designed to have a good anti-counterfeiting effect.

(3) It can highlight the high-grade and distinctive shelf effects of products.

(4) It has a wide variety of styles, and is resistant to cooking, moisture-proof, good vacuum effect, low oxygen permeability, high sealing performance and good heat sealing performance.

(5) Strong resistance to irritation, prevent external lines, especially anti-static, etc., which effectively protect the product from damage caused by the external environment, and extend the shelf life.

2. The main products of four-side sealing bags include:

(1) OPP, CPP, PET, nylon, aluminized and other composite bags;

(2) Blank or multi-color sling bags, self-adhesive bags such as OPP, CPE, PP, PE, PP;

(3) Courier bags of various sizes, such as PE, PP, PO, OPP, CPP, etc., flat pocket organ bags;

(4) A series of design and manufacture of PVC handle bags, zipper bags, environmental protection bags, etc.

3. The scope of application of products with four-side sealing bags:

Four-side-sealed bags are usually used in developing countries such as Central and South Asia. They are mainly used for powdered food, dried fruits and tea. The food that needs to be stored is put in the bag. Some foods require the air to be exhausted, so as to be hygienic, environmentally friendly and extendable. The shelf life and other functions are widely used in snack food packaging, powder food packaging, and food production enterprise packaging.

There is still a big difference between a four-side seal bag and a three-side seal bag in the usual sense, but the origin of such a product naming can be simply understood from the literal sense. Not only that, in terms of application, there is not so much difference between the two products. Like a three-sided sealing bag, it can also be applied to food bags and cosmetic packaging. The two still have the same place in this respect. For more information about the four-side sealing bag, please consult Zekun Packaging:

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