First, the fiber is immersed in an aqueous dye solution […]
First, the fiber is immersed in an aqueous dye solution at a certain temperature, and the dye moves from the aqueous phase to the fiber. At this time, the amount of the dye in the water gradually decreases, and after a certain period of time, the equilibrium state is reached. The dye that is reduced in water is the dye that moves onto the fiber. The fiber is taken out at any time, and even if it is twisted, the dye remains in the fiber, and the dye cannot be completely detached from the fiber. The phenomenon in which the dye is incorporated into the fiber is called dyeing.
1. Dispatching - the blanks from the weaving factory are arranged according to the dyeing factory production plan, and the cloth is placed in the cloth waiting for the subsequent process. Function: a.Generally, it is placed for 12-24 hours to eliminate the tension during weaving, and to prevent dyeing defects caused by the tension of the fabric during dyeing. b. Open the blank without the open blank. For example, it is necessary to carry out water washing, scheduling, and the like.
2. Washing - mainly used in the process of containing OP cloth, completed by a washing machine (also called refining). Role: 1 Remove the oil on the fabric, dirt, dirt. 2 Relaxation fabric tension and internal stress.
3. Pre-scheduled - due to the spandex in the fabric, the spandex is easy to shrink during weaving, and it is easy to produce storage crease wrinkles and the spandex has a process of oiling in the production process. When dyeing, it is necessary to consider removing the oil and passing the preparation of the fabric. 1 Can basically eliminate storage creases, wrinkles 2 Evaporate the oil inside the fabric to the surface of the fabric by a predetermined high temperature. 3 Eliminate the edge retraction of the spandex cloth and improve the quality of the front dyeing.
4. Refining - Polyester elastic knitted fabrics, due to uneven force during processing, it often causes creases and wrinkles caused by shrinkage of spandex. The tension of the fabric is released and relaxation shrinkage is achieved, but since there is no loose machine, only Can be refined and slack in the dyeing tank. Due to the scouring in the dyeing tank, and the dyeing machine has a certain tension, it can not ensure the uniform shrinkage of the fabric under tension-free conditions, so there is more abnormality in the processing of spandex knitting.