33results about How to "High yarn strength" patented technology

The application discloses a method for manufacturing ring-dyed-like yarn from waste pure cotton fabric, and yarn and fabric, and belongs to the field of textiles. The method comprises the following steps: crushing white waste pure cotton fabric into loose fibers; dyeing the loose fibers into first loose fibers, second loose fibers and third loose fibers with gradually deepened colors; additionally dyeing long-fiber cotton into colored cotton fibers with a color deeper than that of the third loose fibers; and spinning to obtain ring-dyed-like yarn. During the drawing process, slivers formed by the colored cotton fibers, the first loose fibers, the second loose fibers and the third loose fibers are arranged in the same plane in the order of deep to shallow and shallow to deep according to the colors. Finally, yarn with gradually shallower colors from the outside to the inside can be obtained, which has a ring-dyed-like effect, is beneficial to making the unique aging effect of denim fabric, and enables the long-fiber cotton to be on the outermost side during the drawing process, which is beneficial to improving the strength of the yarn, making up for the insufficient strength of the loose fibers and making the denim fabric have a relatively rough effect.