Comparative Research of the Sizing Performance of the Compact Spun-yarn and Ring Spun-yarn

The characteristics of the compact spun yam were introduced, and the problems in the sizing process of compact spun yams were analyzed. Because of the high size loading of the compact spun yam, a large number of yarns break and the chubbiness of the fabric were affected. Aiming at the problems above, through sizing experiment and testing of the performance of the yams, the differences between the compact spun yam and the conventional ring spun yam were analyzed. Comparing with the conventional ring spun yam, the size loading rate of the compact spun yarn was reduced about 1 to 3.5 percentage points under the same equipment conditions and sizing techniques. To obtain the same strength and hairiness sticking effect, the size loading of the compact spun yam can be 5 to 6 percentage points lower than that of the conventional ring spun yam. Sizing materials can be saved, and the cost of the sizing process could reduced by 50%.