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Kraft paper self-sealing bag is a common take-out bag, non-toxic, odorless, pollution-free, in line with national environmental protection standards, high strength, high environmental protection, and is currently one of the most popular environmental protection packaging materials in the world. Kraft paper bags made of kraft paper have been widely used. When shopping in supermarkets, shopping malls, food stores, health care stores and other places, there are usually kraft paper bags for packaging. Kraft paper bag is a kind of environmental protection packaging bag with a wide range of uses. Mainly used for packaging: dried fruit, snack food, dry meat products, coarse grains, health products, tea and other food packaging. In order to avoid cross infection, some hospitals skillfully use disposable self-sealing bags to make record protection bags, and the effect is good.

1. According to the material, it can be divided into:

a. Pure kraft paper bag;

b. Paper aluminum composite kraft paper bag;

c. Woven bags and kraft paper bags (generally larger bags)

2. According to the bag type, it can be divided into:

a. Three-sided kraft paper bag;

b. brown paper zip-lock bag for side organ;

c. Self-supporting kraft paper bag;

d. zipper kraft paper bag;

e. Self-supporting zipper kraft paper bag

3.According to the appearance of the package, it can be divided into:

a. Valve pocket;

b. Square bottom bag;

c. Sew the bottom bag;

d. heat seal pocket;

e. Heat sealed square bottom bag

Kraft paper bags of common sizes

The general thickness of single side is 0.15mm, also known as 15s, 15s, can also be customized according to the requirements of different thickness. The left and right sides are generally 1cm sealed, and the bottom is generally folded into 4cm for self-supporting bottom. The printing mode of kraft paper bag is relatively complicated, but the printing precision is higher. Generally, printing within 9 colors is OK. Compared with the ordinary PE zip-lock bag can only print 1-2 colors, kraft paper bag is more grade, more high-end. However, the market demand for kraft paper printing is very large. The appearance of kraft paper bags has solved the problem that many products cannot sell at high prices because of non-standard packaging and no grade. The unique beauty and high-end kraft paper bags quickly become the new favorite of the food industry packaging. Compared with ordinary plastic bags, kraft paper bags bring more than 40 percent profit. It is precisely because the products packaged with kraft paper bags have more visual impact and aesthetics, thus giving enterprises higher prices and generating better profits, so kraft paper bags will become more and more popular in the future food industry.

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