What is the principle of felt felt for wool felt?

- Aug 03, 2018-

The surface of the wool, which looks delicate, is covered with a lot of scaly tissue that we can't see with the naked eye, and the scales open and erect when it comes to hot water. If the scales intertwine with each other and contract together tightly, then the wool becomes felting after extrusion, friction, and kneading by external forces.