Twist Testing Method for Short-Fiber Single Yarns
Different twist testing methods apply to different yarns. Some yarns can be tested by several methods, but differences among methods may lead to varying results. At present, the main twist testing methods for short-fiber single yarns are the direct untwist method, the single untwist–retwist method, and the double untwist–retwist method. By using these three methods to test the twist of short-fiber single yarns, experiments can be conducted to compare differences in testing procedures and results.