The moisture regain not only affects the true weight of the raw cotton and the performance of the cotton fiber, but also affects the production process and the quality of the finished product. The raw cotton has a low moisture content and low fiber strength. It is easily broken into short fibers by machinery, increasing the fly in the workshop and reducing the yarn strength. Sequin Bead Fabric Embroidery Fabric,Knit Embroidery Fabric With Sequins,Sequins Embroidery Lace Fabric,Embroidery Sequin Velvet Fabric Shaoxing Zhong Nian Textile Co., Ltd. , https://www.sxzntextile.com
The moisture regain of raw cotton is too high, and it is susceptible to mildew and spoilage during storage. It is easy to kink during spinning, carding, and other spinning processes, increasing defects, and low impurity removal efficiency.
The factors affecting the moisture content of the raw cotton, in addition to the ambient air temperature and humidity, are mainly the maturity of raw cotton:
(1) High maturity and low water content.
(2) Low maturity, high moisture content, poor maturity of low-grade cotton, and high water content.
The moisture content of raw cotton in China is generally between 7% and 11%. The moisture content of cotton is higher in the southern cotton area and lower in the northern cotton area.
General raw cotton moisture control in the range of 7% to 9% is more appropriate.
The official moisture regain of cotton is 8.5%; the maximum limit of cotton regain is 10.5%.
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