Production and application of kraft paper bags
Kraft paper bags are non-toxic, odorless 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. The use of kraft paper to make kraft paper bags has become more and more widely used. When shopping in supermarkets, shopping malls, shoe stores, clothing stores, etc., kraft paper bags are generally available, which is convenient for customers to carry the purchased items. Kraft paper bag is an environmentally friendly packaging bag with a wide variety.
Type 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 bag size)
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 kind of packaging container made of composite material or pure kraft paper. It is non-toxic, odorless, non-polluting, in line with national environmental protection standards, with high strength and high environmental protection. It is one of the most popular environmentally friendly packaging materials in the world.
Process Description
The kraft paper bag is based on all-wood pulp paper. The color is divided into white kraft paper and yellow kraft paper. A layer of PP film can be used on the paper to play a waterproof role. The strength of the bag can be made into one to six layers according to customer requirements. , printing and bag making integration. 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, especially in almost all European countries using kraft paper bags, so there are several methods of kraft paper bags.
1. Small white kraft paper bags. Generally, this kind of bag is large in quantity and widely used. Many businesses require this kind of kraft paper bag to be cheap and durable. Usually, the method of this kind of kraft paper bag is machine-shaped and machine-sticked. 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 machines and then manually pasted with ropes. Because the current domestic kraft paper bag forming equipment is limited by the molding size, and kraft paper The bag sticking machine can only stick the rope of smaller tote bags, so the practice of kraft paper bags is limited by the machine. Many bags cannot be produced by the machine alone.
3. Large bags, reverse kraft paper bags, thicker yellow kraft paper bags, these kraft paper bags must be made by hand. At present, there is no machine in China that can solve the forming of these kraft paper bags, so they can only be made by hand. The production cost of kraft paper bags is high, and the quantity is not large.
4. No matter what kind of kraft paper bag above, if the quantity is not large enough, it is generally made by hand. Because the machine-made kraft paper bag has a large loss, there is no way to solve the problem of small quantity of kraft paper bag.
Scope of application
Chemical raw materials, food, pharmaceutical additives, building materials, supermarket shopping, clothing and other industries are suitable for kraft paper bag packaging.
Post time: Aug-19-2022