The buttonholes on the webbing need to be locked before use, because the flat webbing is made by the loom for one-time weaving. If the hole is punched, some industrial yarns will break. During use, the belt body will be torn, so the broken wire of the polypropylene webbing after punching needs to be dealt with.

Although synthetic fiber webbing can be used for punching, industrial twill webbing cannot, because industrial belts need to have the ability to bear force, and how to deal with the holes of the flat belt after punching, it will also bear the force. There is tearing caused by uneven force. Therefore, when the sling is cut, it needs to be free from defects, including broken wires and edge breaks.
Of course, when the non-industrial polypropylene webbing is used, it also needs to be fractured. Otherwise, with the extension of the use time, the belt body will fall off or break, resulting in losses. The use starts from understanding the production information of the webbing manufacturer. Avoid accidents caused by ignorance.