Yarn Appearance Board Winder

A yarn Appearance Board Winder, or yarn evenness tester, yarn appearance tester is used to test the yarn’s physical performances, such as the evenness, hairiness, neps, and so on. It is the use of a clamp on the instrument of the blackboard, shaken cotton, and chemical fiber yarn, with the uniformity of the blackboard to test the cotton impurities, dryness, and evenness, it is one of the main instruments to monitor the quality of yarn products.