Speaking of container bags, they are very familiar to many people, but they are so unfamiliar to many of us. Why do you say that, because there are indeed many people who use it? Now it is almost as used as woven bags, but in terms of in-depth understanding of it, it is very unfamiliar. Take this drawing process, don't you understand it yet? What happened?
In the process of making container bags, there are many processes, one of which is the wire drawing process. The width of the wire and the lightness of the pulling force directly determine the quality of the container bag. Let me show you the wire drawing process of the container bag.
When drawing, after extruding the plastic film, you need to pay attention to the following matters. After the extruded molten film is cooled, the appropriate knife distance is selected for cutting according to the type of flat filament. When cutting, try to maintain the cutting uniformity of the flat film. The cut flat film needs to be thermally stretched to obtain a flat yarn with greater tensile strength. However, to prevent the flat yarn from shrinking significantly during the subsequent weaving process, it should also be heat-set. Only after such a series of cutting and drawing tests can we characterize the quality of the container bag. Therefore, the flat wire drawing process of container bags is still very esoteric and unpredictable.