Summary：Why should woven fabric be sizing before weaving on the machine? What are the factors affecting sizing? The woven fabric is sized before weaving, and the sizing
Why should woven fabric be sizing before weaving on the machine? What are the factors affecting sizing? The woven fabric is sized before weaving, and the sizing is to enhance the abrasion resistance of the yarn, coat the hairiness of the yarn, and penetrate the fiber into the fiber to increase the yarn breakage and keep the original yarn as long as possible. The sizing rate is too large, which easily causes the yarn to be brittle during the weaving process of the woven fabric, resulting in waste of the slurry, the denim produced is also inferior, the fabric is rough, the texture is not clear, and the weaving process is gray.
Therefore, without affecting the weaving, the sizing is controlled to a small extent, and the opening of the loom does not have to be very clear. If the sizing is too small, the weaving is difficult, the yarn hairiness is not tightly bound, and the cotton ball is easy to be obtained. The yarn strength is not reached, and the yarn is easily broken. These are the taboos of woven fabric weaving.
Why should woven fabric be sizing before weaving on the machine?
The sizing rate of the woven fabric before weaving is the most important index in the warp sizing process, and it is also one of the core contents of the weaving process design of the woven fabric. The sizing rate test data is timely, comprehensive and accurate, and the production process is adjusted. Process parameters and formulations, as well as guiding production, are important. Simultaneous control of the uniformity of the sizing rate also prevents surface color differences caused by large differences in sizing. The requirements for the sizing process of different woven fabrics are also different.
An important indicator to measure whether a sizing process parameter configuration is reasonable: sizing elongation, slurry penetration rate, coverage rate, serosal integrity rate, hairiness reduction rate, sizing enhancement rate, grinding rate, and elongation reduction rate.
The sizing rate of the woven fabric before weaving is related to the concentration of the slurry concentration, the temperature of the slurry, the pressure of the pulping bar and the speed of the sizing speed.