1.Overview
The flexible ton bags use polypropylene as the main raw material. After adding a small amount of stable auxiliary materials, they are uniformly mixed, and then the plastic film is melted and extruded through an extruder, cut into filaments, and then stretched. The PP raw silk with low elongation is woven and laminated into a plastic woven base fabric, which is then sewn with slings and other accessories to make a ton bag. It has the excellent performance of light weight, softness, high strength, acid and alkali corrosion resistance, moisture resistance and no leakage. It can not only load granular materials, but also can be used as a packaging container for hydrated minerals. It is especially suitable for packaging chemicals and Minmetals products. It is an ideal container. Facing the current low profit of ordinary woven bags, the production of ton bags has become a highly profitable product recognized in the industry. According to the trend of the international environment, transportation is becoming more and more developed, the information communication network is more and more information, and the import and export volume between countries is only increasing.
2. From the appearance of classification, container bags can be simply divided into round bags and square bags
The Zhengzhou ton bag manufacturer can see from the above picture that the round bag is a square bag directly produced by a circular loom, which is formed by sewing the bottom and making the top sling.
3. The characteristics of the base cloth
The container bag should hold 1 to 2 tons of goods, so the basic requirements of the woven bag bottom cloth have two points: 1 is the width of the cloth is wide enough; 2 is the strength and thickness. 14X14 high denier flat yarn is commonly used for weaving around the world.
4. Up and down bottom fabric
At present, due to the convenience of transportation and stacking, container bags are sewn from the bottom to the top of a round or square bag. Special emphasis is placed on the way to hide the import and export of materials: due to the large force, the bottom fabric is also woven with 14X14 high denier flat yarn. Ordinary woven bags can be used for the upper base fabric. However, due to the same size of the upper and lower base fabrics, in order to facilitate production and reduce the process flow, most manufacturers use 14X14 high-denier flat yarn to weave the upper and lower base fabrics.