Classification of kraft paper bags

In our daily work and life, as long as you pay a little attention, you will find that you often use or see kraft paper bags, such as buying food, often useful to kraft paper bags to do packaging, it gives you the most impression is that toughness is better, not stained with oil, so what is kraft paper bags? Let's reveal it for you!

The main material of paper bag is white card, kraft, black card and copper paper these four kinds of special paper, kraft paper bag as the name suggests is made of kraft paper, it has a very high degree of firmness and toughness, it is not easy to tear, kraft paper is very suitable for printing monochrome or color is not very rich two-color paper bag, The weight of frequently used kraft paper is about 157g to 300g.

Kraft paper bag in the application, according to the opening and the way of the back can be divided into heat sealing, paper sealing and paste bottom, the application range involves many industries, such as: chemical raw materials, food, pharmaceutical additives, building materials, supermarket shopping, clothing, etc. All suitable for kraft paper bag packaging industry. The color is divided into white kraft paper and yellow kraft paper, which can be coated with a film of PP material on the paper to play a waterproof role, and the strength of the bag can be made into one to six layers according to customer requirements, and the printing and bag-making are integrated.

Kraft paper bags can be classified in more detail mainly from the three aspects of material, bag type and appearance, as follows:

Kraft paper bag according to the material can be divided into: pure kraft paper bag; Paper aluminum composite kraft paper bag (kraft paper composite aluminum foil); woven composite kraft paper bag (general bag type is larger).

Kraft paper bag according to the bag type can be divided into: three-side sealing kraft paper bag; Side organ kraft paper bag; self-supporting kraft paper bag; Zipper kraft paper bag; Self-standing zipper kraft paper bag.

Kraft paper bag according to the appearance of the bag can be divided into: valve pocket; Square bottom bag; Sew bottom pocket; Heat seal pocket; Heat sealed square bottom bag.

In short, kraft paper bags are made of wood pulp paper as a substrate, made of a composite material or pure kraft paper packaging containers, non-toxic, tasteless, pollution-free, low-carbon environmental protection, in line with national environmental standards, with high strength, high environmental protection, is currently one of the most popular environmental protection packaging materials in the world.