First of all, thread density and imperial count. Thread density is a measure of the quality of long objects per unit length, while sewing thread can be regarded as the thickness of the thread. The technical direction of cotton thread and polyester thread used for plastic weaving. The cotton sewing thread used for plastic weaving should comply with the national standard GB/T6834-1997 and national standard GB/T6835-1997 for polyester sewing thread. We also need to pay attention to the number of strands, the breaking strength of the double yarn, the twist degree, and the twist direction of the ton bag.
The container bag pressure test is to put the fully loaded container on the press for the pressure test. The pressure bag is four times the full load of the pressure bag, or the static load method, which is four layers of full bags. Self-weight, pressing time exceeds 8 hours. In this difficult situation, the contents will not spill and the bag body will not be damaged, which means that the container bag has passed the test.
When designing the packaging volume, weight, and number of packaging units (number of pieces), the strength of the packaging bag should be considered, as well as the transportation distance and number of transportation times, as well as the domestic transportation methods and methods. The GB/T10454-2000 standard strictly stipulates the technical requirements for container bottom bags and spreaders. From a safety perspective, factory bagging structures are obviously bottom suspension structures, and the safety factor must reach 1:6.
Ton bags mainly contain block, granular, or powdery items, and the physical density and looseness of the contents also have significantly different effects on the overall results. Its safety factor refers to the ratio between the product's bearing capacity and the rated design load. In similar standards at home and abroad, the safety factor is generally set to 5-6 times. Container bag products with a five-fold safety factor can be used safely for a longer period of time.