The processing process of non-woven fabrics is mainly net formation and reinforcement, and after the net formation is reinforced, it becomes a cloth. However, due to the different methods of web formation and reinforcement, the structure of nonwovens can vary widely and exhibit a wide variety of performance characteristics. But in general, non-woven fabrics are all cloth-like materials formed by fiber webs. These fibers exist in different forms in the fiber web. Some fibers are basically parallel, and some fibers are two-dimensional messy. Arrangement, and some are three-dimensional random arrangement. There are different ways to connect fibers. For example, fibers can be entangled with each other in the form of mechanical external force; fibers can also be bonded together by adhesives; It can be glued together by thermal bonding and so on. Nonwovens and textiles are very different in appearance and structure.