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• Time of issue:2020-12-02 08:50
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(Summary description)1. The original fabric preparation
The preparation of the original fabric includes original fabric inspection, turning over (batch, box, printing) and sewing head. The purpose of the original fabric inspection is to check the quality of the grey fabric and solve the problems in time. The inspection content includes two physical indicators and appearance defects. The purpose of singeing singeing is to burn off the fluff on the cloth surface to make the cloth surface smooth and beautiful, and to prevent uneven dyeing and printing defects due to the existence of fluff during dyeing and printing. In order to smooth fabric weaving, desizing mills often sizing warp yarns to improve strength and abrasion resistance. The slurry on the grey fabric not only affects the water absorption performance of the fabric, but also affects the quality of dyeing and finishing products, and will increase the consumption of dyeing chemicals. Therefore, the slurry should be removed before scouring. This process is called desizing.

2. Dyeing

Dyeing is a relatively complex process, and the process of dyeing fabrics of different qualities is different, such as cotton, polyester-cotton, nylon, polyester, chemical fiber products, blended products, and so on. Some use pad dyeing and jig dyeing, some require high temperature and high pressure dyeing, some only dye once, and some require multiple dyeing. Although dyeing can be done through a padding car, it is also the most difficult process, because in addition to the known color control of dyeing, there are many unknown things in it, such as the stability of the dye at different temperatures, and the steam The control, the pressure control of the rolling mill, etc., are all very delicate tasks.

The dyeing long car is divided into two parts, the front car is dyed, and the rear car is fixed. The dyeing method is different according to the different types of dyes selected. The dyes are generally reactive, dispersed, vulcanized, and paint. They have their own advantages and disadvantages, in general It depends on the required colors, and they cannot be replaced with each other.

Three, finishing

Finishing is a textile technology project that gives clothing fabrics wearability and beauty. The following are the common types of textile finishing: The main equipment is: singeing machine, desizing machine, mercerizing machine, liquid ammonia machine, setting machine, pre-shrinking machine, calender, washing machine, sanding machine, grasping Wool machine, coating machine, etc.

Dyeing fastness is the most important indicator of dyed fabrics. The ability of printed and dyed textiles to withstand the effects of the outside world to maintain the original color, also known as color fastness. After dyeing and printing, textiles sometimes go through other processes, such as felting of woolen fabrics, heat setting of synthetic fiber textiles, etc.; in the process of taking, they must be exposed to the atmosphere, sweat, and subjected to washing, friction, and ironing. effect. These can cause different degrees of fading and discoloration of printed and dyed textiles.

The main processes that affect the color fastness of printed and dyed textiles are milling, carbonization, chlorine bleaching, and sublimation. The color fastness of dyes or pigments on textiles is related to their chemical structure, concentration and state on the fiber, and the properties of the fiber. The test methods of various color fastnesses are formulated by simulating various wearing or process conditions.