1. The Significance of Reducing EndBreakageof Spun Yarn
（1）The more broken ends, the worse yarn quality.
（2）The more broken ends, the lower spinning output.
（3）The more broken ends, the greater the intensity of labor.
（4）The more broken ends, the more cotton is used.
2. Analysis of Spinning Breakage
（1） Index of breakage rate of spinning yarn
①The concept of breakage rate: the number of broken ends when spinning 1000 spindles.
②Index of breakage rate: The ministerial standard for breakage number of spinning yarns is: 50 pure cotton yarns; 70 pure cotton yarns under 8 Te; 30 polyester-cotton (65/35) blended yarns.
（2）Classification of broken ends of spinning yarns
① Breakage before yarn forming: Breakage before yarn forming refers to the breakage of yarn before roller output, which occurs in the feeding and drafting parts.
②Breakage after yarn formation: Breakage after yarn formation refers to the breakage of the yarn from the front roller output to the barrel during twisting and winding.