After sizing, warp yarn can be weaved on loom only after some preparation. The warp density of high-gear fashion fabrics is very high, which requires clear opening of warp yarn in weaving. The quality of warp shaft and warp yarn opening are very high. When new kinds of fabrics begin to be produced, warp yarns must be re-pierced into some original parts of the loom, such as heddles, warp stop pieces, steel buckles, etc.
Drawing-in is to put warp into harness eye and reed teeth, which can further fix warp yarn temporarily and locally in terms of arrangement order, arrangement width and density. That is to say, under the control of reed teeth, the warp yarns near the heald and reed do not move relative in the right direction, leaving only a number of relative activities in the upper and lower directions.
Purpose: According to the technological requirements of the fabric, the warp yarn is put into the warp stop, the heddle and the reed in turn, so that the warp yarn can be lifted and lowered according to the designed fabric structure during weaving.
Requirements: No mistake, leakage and multiple wear. Otherwise, the fabric structure will be destroyed and the appearance of the fabric will be defective.