Production method of ultrahigh count pure cashmere spun yarns

Abstract

The invention relates to ultrahigh count pure cashmere spun yarns, in particular to a production method of the ultrahigh count pure cashmere spun yarns. The production method comprises the steps of opening of raw materials, cashmere mixing, cashmere combing, gilling 1, gilling 2, gilling 3, combing, gilling 4, gilling 5, combing, gilling 6, gilling 7, cashmere stripe combing, strip mixing, first needle, second needle, third needle, domestic drawing 1, domestic drawing 2, drawing 3, domestic roving, domestic spun yarn and Sussen compact spinning, automatic spooling, high-speed doubling, two-for-one twisting and cheese product. According to the invention, the process method is specific, the utilization rate of flock can be improved, count of the spun yarns and the dry quality of spun stripes of the high count yarns can be improved, and all physical indexes of the produced product reach standards of international high-class products.

Description

technical field [0001] The invention relates to pure cashmere worsted yarn, in particular to a production method of super high-count pure cashmere worsted yarn. Background technique [0002] The average fineness of pure cashmere is between 14.3-16.8μm, and the fineness dispersion is small. The average length of high-quality cashmere after carding is 38-40mm, and the short cashmere produced during carding is large, resulting in large dispersion of cashmere length; The upper cashmere is extremely short in length, weak in strength, less in curls, and poor in cohesion between fibers. In order to spin high-quality worsted high-count yarns, it is necessary to remove a large amount of short cashmere, thereby increasing the average length of cashmere, and it is necessary to straighten pure cashmere fibers evenly to ensure the technological requirements of the spun sliver before spinning. [0003] In the past, China’s cashmere was mostly concentrated in the carded spinning processin...

AI Technical Summary

Problems solved by technology

[0003] In the past, China’s cashmere was mostly concentrated in the carded spinning processing stage, and the development of worsted processing technology lagged behind. The process is very immature, resulting in uneven quality of worsted pure cashmere high-count yarn products. In order to improve the quality of high-count yarns in worsted fabrics, the requirements for raw materials are getting better and better, and the cost is getting higher and higher. Moreover, there is a large gap with the world's advanced level; cashmere worsted spinning technology in the world also mostly uses wool worsted processing to improve the process. Bubble rollers are used to strengthen the control of floating fibers, and it is required to completely remove short fibers below 20mm, and to control a small proportion of short fibers below 25mm when spinning high-count yarns. It is much better to control the fiber, but it is not very ideal for the control of 20mm-25mm short staples. For worsted yarns above 100Nm / 2 public count, the length of the cashmere bar raw material needs to reach 52-58mm, and a large amount of 25mm needs to be removed. For the short cashmere below 30mm, the proportion of short cashmere below 30mm must be controlled in a small amount before it can be mass-produced, so the cost of worsted high-count pure cashmere yarn raw materials is increased.

There is currently no method to overcome the above drawbacks

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