A textile factory has launched blended products, which is a test of the water, but the first two batches of products are sold, and the customer's response is not very good, and the yarn has high defects and many broken ends, which has a great impact on the quality of the fabric. So the boss sent technicians to analyze the later batches of yarn, in addition to the equipment and process, the moisture regain rate of the fiber also has a certain reason.
First of all, the process is not proficient, after all, the process of cotton spinning and blending is still different, and employees need to be familiar with the process, so they have trained employees in this regard. In terms of equipment operation, the main reason is that the roller before the spinning yarn adopts a large interval and heavy pressurization process, and adopts a reasonable pressure gear to ensure that the drafting force is compatible with the holding force, which not only reduces the yarn defects, but also reduces the damage caused by the rubber roller and rubber ring.
There is also a low moisture regain rate of yarn, especially for semi-finished yarn products, and the standard moisture regain rate of cotton slivers mixed with other fibers is 114%, but the actual moisture regain rate is only 75%～7.8%, which is far lower than the demand of the blending process, so the strength and toughness of the fiber decrease, resulting in yarn defects and broken ends, an increase in hairiness and a decrease in quality.
The measures adopted by the company are to pretreat viscose fibers, humidify the disc by using the ZS-80Z series moisture regain humidifier, moisturize the carding process, etc., so that the moisture regain rate of the carding sliver reaches 95%。The production area of the drawing process is also humidified accordingly, and the carbon black rubber roller is used to prevent the rubber roller from sucking and winding, and the actual moisture regain rate after the cotton strip is mixed reaches 85% or more. Through humidification, the strength and toughness of the fibers are improved, and yarn defects are significantly reduced.
ZS-80Z series blending workshop humidifier, through the ceramic transducer oscillation to atomize the water into 1-10 micron mist particles, through the fan to the textile workshop to quickly evaporate can improve the air humidity, the microcomputer control system can control the air humidity according to the input air humidity value in line with the production process requirements of 50-70%RH range, so as to ensure that the moisture regain rate of the fiber will not decrease, increase the strength and toughness of the fiber, but also prevent static electricity, to ensure the smooth progress of blended production.