Crown needle is one kind of felting needle, all barbs on crown needle are formed barbs with only one barb on each edge. The barb spacing is very small only 0.1mm . This allows the needle to catch the fiber simultaneously during the structuring process, carrying them out of the fabric as evenly formed loops. Thus, a dense, velour type surface quality without streaks is created during final processing. Crown needles are used for the production of linings in automobiles or floor coverings.