Key technology measures in preparation process of pure cotton fine S and Z hard twist yarn crepe fabric were discussed. Heat-setting was done on the yarn properly before weaving because problems of yarn easy kinky and winding would happen in producing CJ 7.3/7.3 327/327 170 hard twist yarn crepe fabric. In warping process,principle of larger tension and medium speed was adopted, S twist yarn was installed in clock wise and S twist yarn was installed in counter clock wise. Sizing instruction was selected properly in sizing process and sizing conditions were selected in mod erate. Proper order and method were adopted in heddle draft and reed-in to ensure S twist yarn and Z twist order be 2 '? 2. Finally fabric loom efficiency can be reach 75% to 80% and production demand can be satisfied.%探讨纯棉细号正反强捻纱绉织物织前准备工序的关键技术措施.针对CJ 7.3/7.3327/327170强捻绉织物生产过程中易出现纱线扭结、纠缠等问题,织前对纱线进行适当的热定形处理；整经采取“较大张力,适中速度”的工艺原则以及Z捻正装、S捻反装两种纱线安装形式；浆纱合理选择浆料配方,采用适中的上浆条件；穿综及穿筘采用合理的顺序及方法,确保经纱Z捻与S捻以2∶2顺序排列；最终使生产该种织物的织机效率达到75％ ～ 80％,满足了生产要求.
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