1．纤维细度与成纱强度。在其他条件不变时，纤维愈细，成纱强度愈高，可纺纱的细度愈细。这是因为纤维细，成纱截面内包含的纤维根数多，纤维之间接触面积大，纤维之间滑脱的机会少，成纱强力就高。棉纤维因壁薄成熟差而导致的纤维较细(单纤维强度极低)，则成纱强度反而降低。
1. Fiber fineness and yarn strength. When other conditions remain unchanged, the finer the fiber, the higher the yarn strength and the finer the spinnable yarn. This is because the fibers are thin, the number of fibers in the yarn cross section is large, the contact area between fibers is large, the chance of slipping between fibers is small, and the yarn strength is high. Cotton fibers are finer due to poor wall maturity (single fiber strength is very low), but yarn strength decreases.
2．纤维细度与成纱条干均匀度。一般纤维愈细、愈均匀，成纱截面内纤维根数众多，成纱条干均匀度愈好。特别是在纺成纱内纤维根数本来就少的细持纱时，如果改用较细的纤维，对提高成纱强度和改善成纱条干效果尤其显著。
2. Fiber fineness and yarn evenness. The finer and more uniform fibers are, the more fibers are in the yarn section, and the better yarn evenness is. Especially when the number of fibers in the spinning yarn is small, if the finer fibers are used, the effect of improving yarn strength and yarn evenness is especially remarkable.
纤维长度与纺纱工艺的关系也十分密切，从纺纱设备的结构、尺寸到各道工序的工艺参数，都必须与所用的纤维长度相配合。例如，原棉长度不同时，清棉机的打手形式、梳棉机的给棉板长度等都应改变。棉纺机台中的罗拉隔距都是可以调节的，纤维长度长时，罗拉隔距增大，纤维长度短时，罗拉隔距缩小。细纱的捻系数也应随着纤维长度的变化而变化。为了使细纱具有一定的强度，用短纤维纺纱时，细纱捻系数应偏大选择；用长纤维纺纱时，细纱捻系数一般偏小选择。捻系数低，可提高细纱机的产量。

The relationship between fiber length and spinning process is also very close. From the structure and size of spinning equipment to the technological parameters of each process, the length of fibers used must be matched. For example, when the length of raw cotton is different, the beater form of the cleaning machine and the length of the feeding board of the carding machine should be changed. The www.huizhuanyao5.com.cnwww.gzdebon.com.cnwww.dianLiwuzi.com.cnwww.btwujin.cnwww.bjsrxh

sart.cnwww.huafuly.cnroller spacing in the cotton spinning table can be adjusted. When the fiber length is long, the roller spacing increases, the fiber length is short, and the roller spacing decreases. The twist coefficient of spinning yarn should also change with the change of fiber length. In order to make the spinning yarn have a certain strength, the twist coefficient of the spinning yarn should be selected preferentially when spinning with staple fibers, and the twist coefficient of the spinning yarn with long fibers is generally selected on the small side. Low twist coefficient can increase the output of spinning frame.