There are many production processes of pickling lifting belt, such as diameter, textile, dyeing, cutting, sewing, trimming, packaging, an important part of the process is the sewing process of lifting belt. Why is this link particularly important? It is because this link directly affects the tension of the sling, and this link is uncontrollable, completely depends on the sewing skills of skilled workers. For example, the standard is dead, but the techniques of workers are different.
The key in sewing is the material of thread and suture. The suture material is generally consistent with the original material of pickling lifting belt, and must be processed by automatic sewing machine, but some large tonnage lifting belt still needs manual sewing. The stitching should not touch the edge of the ribbon unless the lifting belt is surveyed by the loop. When suturing, different color thread can be used for suturing with lifting belt to facilitate inspection and acceptance by manufacturers and users. Pickling lifting belt stitches should be stitched through the part of the sling that needs to be stitched together, and the stitches must be smooth and smooth, and there should be no excess coils on the surface after stitching. After stitching, the standard lifting belt must be smooth and flat, and the belt must be straight. There is no loose line, difference line, jump line, tape edge meticulous, hook edge without wool, child line should be clear. In order to prevent the fracture of the sling from spreading, the fracture should be heated without damaging the adjacent stitches. Heat treated fractures should not be closed.
The above is the sewing process details of pickling lifting belt. It can be seen that not every manufacturer can do the sewing thread casually, and it needs to invest a lot of money to train sewing technicians, which is also the reason for the difference in product quality made by the lifting belt manufacturer.