The product of the ton bag is different from the ordinary plastic woven bag because its carrying capacity is much larger than that of ordinary packaging, so the stitching of each part of it is also crucial, to ordinary plastic bags. Simple heat sealing is enough, but it requires multiple processes to be combined with other components. This policy is an important and key policy for container bags. In the plastic braiding specification GB/T8946 and the composite plastics GB/T8947 national specification, the tensile load in the seam edge direction and the seam bottom direction are clarified. The main factors that affect the stitching strength are the type and type of suture, stitch size, stitches, standard of hemming or hemming suture to bag edge, hot and cold cutting methods, etc. Generally speaking, container bag manufacturers should formulate internal control policies for these influencing factors. Regarding container bags, national standards stipulate that the tensile strength of the main connection part must reach more than 67% of the basic strength, and the tensile strength of the bottom connection part must reach more than 42% of the basic strength. Regarding the top seal of the cement bag with the socket, it is recommended to treat it as a seam-bottom strength treatment. Regarding the seam-bottom strength of a paper bag, it generally does not meet the target, so it is recommended to change it to a bottom-sealed bag. For laminated cold-cut bags, it is recommended to use crimping, because the sutures on the cold-cut edges may be torn out from the warp and weft. For woven bags that do not require strength, the upper edge of the bag can be overlocked, the stitch length can be dense, and the thread can be thin.
Ton bags, container bags, and soft pallets all use polypropylene as the main raw material. After adding a small amount of stabilizing seasonings and mixing them evenly, the plastic film is melted and extruded through an extruder, cut into filaments, and then stretched and heated It is shaped into high-strength and low-elongation PP raw yarn, which is then spun and laminated to make a base fabric for plastic woven fabric, which is then sewn with accessories such as slings to make a ton bag. Container bags are divided into three types according to their shapes: round, square, and U-shaped. The hoisting structures include top hoisting type, side hoisting type, and bottom hoisting type, usually with an inlet and outlet. It can be widely used in the packaging of various powdery, granular, and lumpy items such as chemicals, building materials, plastics, and mineral products. It is an ideal product for warehousing, transportation, and other industries.