Textile printing and dyeing
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The three major processes of dyeing and printing.
The preparation of raw fabric includes raw fabric inspection, re-rolling (by batch, by box, printing), and seam sewing. The purpose of raw fabric inspection is to check the quality of the grey fabric and to address any issues promptly. The inspection content includes physical indicators and appearance defects. Burning off the fluff aims to remove the fluff on the fabric surface, making it smooth and aesthetically pleasing, and to prevent uneven dyeing and printing defects caused by the presence of fluff during dyeing and printing. To facilitate smooth weaving, textile factories often apply sizing to the warp yarn to enhance strength and abrasion resistance. The sizing on the grey fabric affects the fabric's water absorption properties, impacts the quality of dyed and finished products, and increases the consumption of dyeing chemicals. Therefore, the sizing should be removed before boiling and processing, a process known as desizing.
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Types and Characteristics of Textile Coating and Finishing
Coating finishing is a common textile post-finishing technique, which generally includes the following methods.
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The dyeing process of fiber fabrics generally goes through three stages: surface adsorption, internal diffusion, and dye fixation.
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Dyeing of textiles can be done at any stage, including fibers, yarns, fabrics, and finished garments. We usually refer to the first two methods as "pre-dyeing" and the latter as "post-dyeing."
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