How are kraft paper bags made?

How are kraft paper bags made?

Many people are curious, how is the kraft paper bag made? The following editor will give you an inventory of how it is made.

　　 Kraft paper bags are favored by everyone because of their environmental protection characteristics. In particular, almost all European countries are using kraft paper bags, so there are several ways to make kraft paper bags.

1. Small white kraft paper bags. Generally, this kind of kraft paper bag is large in quantity and widely used. Many businesses require this kind of kraft paper bag to be cheap and durable. Usually, this kind of kraft paper bag is formed by machine and attached to the rope by machine. Machine operated.

2. The practice of medium-sized kraft paper bags. Under normal circumstances, medium-sized kraft paper bags are made of kraft paper bags made by machine pasting synthetic type and then manually pasting ropes. Because the current domestic kraft paper bag forming equipment is limited by the molding size, and the kraft paper The bag cording machine can only paste the cords of smaller handbags, so the method of kraft paper bags is restricted by the machine. Many bags cannot be completed by the machine alone.

3. Large bags, kraft paper bags with reverse heads, thicker yellow kraft paper bags, these kraft paper bags must be made in an exclusive way. At present, there is no machine that can solve these kraft paper bags in China, so they can only be made by hand. The production cost of this kind of kraft paper bag is relatively high, and the quantity will not be large.

　　4. No matter what kind of kraft paper bag above, if the quantity is not large enough, it is generally made by ***, because the machine-made kraft paper bag has a large loss, there is no way to solve the practice of small number of kraft paper bags.

　　 type

　　1: According to the material, it can be divided into: a. Pure kraft paper bag; b. Paper-aluminum composite kraft paper bag (cow leather composite aluminum foil); c: Woven bag composite kraft paper bag (generally larger bags)

　　2: According to the bag type, it can be divided into: a. Three-side sealing kraft paper bag; b. Side organ kraft paper bag; 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 bag, it can be divided into: a. Valve bag; b. Square bottom bag; c. Seam bottom bag; d. Heat sealing bag; e. Heat sealing square bottom bag