Container bags are commonly used items in daily work, and their utilization rate is very high. Of course, repeated use of the container will cause damage to the container bag. Generally, container bags are sewn between base cloth reinforcement cloth and slings. The sling is connected to three layers of reinforced fabric through a sewing machine, which is both strong and able to withstand a certain weight.
What causes packet splitting?
1. Damage to the container bag caused by sharp or sharp objects during the automatic packaging process.
2. Improper use during storage and transportation, and excessive force causing damage to the container bag.
3. For special reasons, when vacuum sealing the bag, if the net content or volume of the contents exceeds the tolerance of the used bag, strong external force may cause the bag to split and crack during transportation or use.
The container bag product is different from ordinary plastic woven bags. Since its holding capacity is much larger than ordinary packaging, the stitching of each part of it is also crucial, unlike ordinary plastic bags. Such simple heat sealing is enough, but it requires multiple processes to be combined with other components.
This policy is the most critical 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 variety and type of suture, stitch size, stitches, the standard of hemming or hemming suture to bag edge, hot and cold cutting methods, etc. Generally speaking, FIBCs should develop internal control policies for these influencing factors. For 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 spout cement bag, it is recommended to treat it as the bottom seam strength. Regarding the bottom seam strength of the paper bag, it usually cannot meet the policy, so it is recommended to change it to a bottom bag. For laminated cold-cut bags, it is recommended to use crimping, because the sutures at the cold-cut edges may be torn out from the warp and weft. For woven bags that do not require strength, the top of the bag can be hemmed for a week, the stitch length can be dense, and the thread can be thin.