Container bags, also known as ton bags or large bags, are large containers used for transporting, storing, and handling bulk materials. The production process of container bags is a complex and intricate process that involves multiple key steps to ensure the quality and performance of the final product. The following is a detailed introduction to the production process of container bags:

1、 Raw material preparation

The main raw materials for container bags include chemical fiber materials such as polypropylene (PP), polyethylene (PE), polyester (PET), etc. These raw materials need to undergo strict screening, cleaning, and drying processes to ensure their quality and dryness meet production requirements. This step is the foundation for producing high-quality container bags.

2、 Wire drawing

On the wire drawing machine, the pre treated raw materials are subjected to wire drawing operations to turn them into long filaments. The main purpose of wire drawing is to improve the strength and durability of raw materials, providing high-quality raw materials for subsequent weaving work. The quality of the filament will directly affect the quality of the circular woven fabric, thereby affecting the overall performance of the container bag.

3、 Round weaving

The long filaments obtained from drawing are woven using a circular loom to form fabric. The speed and density of the circular loom can be adjusted according to production needs to meet the requirements of different products. High quality round woven fabric can ensure the strength and durability of container bags, which is a crucial part of the production process.

4、 Coating film

In order to improve the strength and durability of woven fabrics and prevent the invasion of moisture and external pollutants, it is necessary to coat the woven fabrics. Common coating materials include polyethylene, polyvinyl chloride, etc. The quality and thickness of the coating have a significant impact on the service life and safety performance of container bags.

5、 Weaving and cutting

The coated woven fabric will be further woven into the main body of the container bag using a weaving machine and cut according to the required size. During the cutting process, the fabric will be divided into different parts such as the front, back, and sides to prepare for the subsequent bag making work.

6、 Bag making and sewing

The cut fabric is processed into bags using a bag making machine to form the initial form of a container bag. Subsequently, the container bag is sewn using a sewing machine, and its various parts are pieced together to form a complete container bag. During the sewing process, it is necessary to strictly control the density and strength of the stitches to ensure the sealing and load-bearing capacity of the container bag.

7、 Quality Control and Packaging

During the production process, it is necessary to conduct strict inspection and testing on the container bags to ensure that their quality and safety performance meet relevant standards. Quality control personnel will conduct strict inspections and controls on each link to ensure that the product meets the specified requirements. After production is completed, pack the container bags for storage and transportation.

In summary, the production process of container bags requires careful design and strict control in multiple stages, including raw material preparation, drawing, circular weaving, coating, weaving and cutting, bag making and sewing, as well as quality control and packaging. Only by selecting high-quality raw materials and strictly controlling the production process and flow management of every link can we produce high-quality and high-performance container bag products.