In the process of producing needle-punched felt, there are many factors that will affect its quality. The following editor will introduce the relevant knowledge for us:
First, the quality of acupuncture, including the fiber used, the method of hair curl formation, the type of needle, and the method of acupuncture. The second is resin coating. Use spray or roller to coat one side, or use hot-melt resin to coat. The second is resin processing, immersed in various resin solutions. In addition, it is heat setting and high temperature to make the felt products dimensional stability. There is also singeing, which can burn off the surface hairiness and make the surface smooth.
These are the brief introductions to the factors affecting the quality of needle-punched felts. I believe you must have understood some of them, and you must pay more attention to them when using them.