Kraft paper bags are non-toxic, tasteless, and non-polluting, meet national environmental protection standards, have high strength and high environmental protection, and are currently one of the most popular environmentally friendly packaging materials in the world. Kraft paper bags made of kraft paper are becoming more and more widely used. Shopping in supermarkets, shopping malls, shoe stores, clothing stores and other places will usually have kraft paper bags to facilitate customers to carry the purchased items. Kraft paper bag is an environmentally friendly packaging bag with a wide variety of types.
Category 1: According to the material, it can be divided into: a. Pure kraft paper bag; b. Paper aluminum composite kraft paper bag (kraft paper 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
Definition description
Kraft paper bag is a packaging container made of composite materials or pure kraft paper. It is non-toxic, tasteless, and non-polluting. It meets national environmental protection standards. It has high strength and high environmental protection. It is currently one of the most popular environmentally friendly packaging materials in the world.
Process description
Kraft paper bags are made of wood pulp paper as the base material. The colors are divided into white kraft paper and yellow kraft paper. The paper can be coated with a layer of PP material to play a waterproof role. The strength of the bag can be made from one to six layers according to customer requirements. , Printing and bag making are integrated. The opening and back cover methods are divided into heat sealing, paper sealing and lake bottom.
Production method
Kraft paper bags are favored by everyone because of their environmental protection characteristics. In particular, kraft paper bags are used in almost all European countries. There are several ways to use 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. 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, and thicker yellow kraft paper bags. These kraft paper bags must be made by hand. At present, there is no domestic machine that can solve these kraft paper bags. They can only be made by hand. The production cost of kraft paper bags is relatively high, and the quantity will not be large.
4. No matter what kind of kraft paper bags above, if the quantity is not large enough, it is generally made by hand, because the machine-made kraft paper bags have a large loss, and there is no way to solve the practice of small quantities of kraft paper bags.
Performance parameter
Applicable type: one-time use
Shape: flat pocket, square bottom open pocket, square bottom valve pocket, one-word paste bottom bag (for food packaging)
Material: polypropylene, kraft paper, aluminum foil
Filling volume: 0.2KG-50KG
Sewing method: paper back cover, heat back cover, paste bottom.
Lining: paper lining, inner film bag
Scope of application
Chemical raw materials, food, pharmaceutical additives, building materials, supermarket shopping, clothing and other industries are all suitable for kraft paper bag packaging.