Spinning process of covering yarn with high hollowness degree, prepared covering yarn and process for weaving towel by utilizing covering yarn

Abstract

The invention provides a spinning process of covering yarn with high hollowness degree, a prepared covering yarn and a process for weaving towel by utilizing the covering yarn. The spinning process comprises the following steps of: compositing and twisting two crude cotton yarns and water-soluble vinylon filament with number of 4.1-7.3 tex to prepare a spun yarn with cotton fiber covering the water-soluble vinylon filament; and hydrolyzing the water-soluble vinylon filament to obtain the covering yarn with the high hollowness degree. The strength and the hollowness degree of the covering yarn with the high hollowness degree, prepared by the spinning process disclosed by the invention, are higher than the strength and the hollowness degree of a common hollow covering yarn with the same yarn count, the overing yarn with the high hollowness degree is soft and fluffy and has strong water absorbability and improved heat insulation performance; and the woven towel prepared by the process of the invention is light and fluffy, and has good heat insulation performance and resilience, high water absorption speed, large unit-area water absorption amount and high drying speed.

Description

technical field [0001] The invention belongs to the technical field of spinning, and in particular relates to a core-spun yarn with high and high hollowness, a new spinning process thereof, and a process for weaving towels by using the core-spun yarn. Background technique [0002] At present, cotton hollow yarn is mainly made of the principle of covering hollow yarn. Covering hollow yarn is a composite yarn formed by covering water-soluble core yarn with cotton fiber. This water-soluble core yarn is made of PVA resin. Has good water solubility. Generally, the core yarn (water-soluble yarn) of the composite yarn is completely dissolved in hot water above 90°C to form a yarn with a hollow structure inside. The yarn with this structure is soft and fluffy, has strong water absorption, and can store more inside. The static air makes the yarn have excellent thermal performance. [0003] As we all know, the covering performance of the outer fiber of the hollow core-spun yarn on t...

AI Technical Summary

Problems solved by technology

However, the traditional cotton hollow yarn spinning process has the following defects: 1. A single thick cotton yarn and the core yarn are fed into the drafting mechanism at the same time, and are combined into yarn after drafting and twisting, but the core yarn is difficult to be completely in the center of the yarn , that is, the fibers of the outer sheath layer cannot completely cover the core yarn, and the phenomenon of core leakage is serious. The final hollow effect, the number of traditional hollow yarn is generally higher, the yarn is thicker, which limits the scope of use of hollow yarn; 3. In order to improve the hollowness of the yarn, you can choose a larger number Core yarn, but if the ratio of core yarn is too large, the strength of the yarn after dedimensionalization will be too low, which cannot meet the standard requirements for normal use; for example: Chinese patent "A processing method for yarn used in thermal fabrics", Patent No. "201110072629.3" mentions a kind of hollow yarn, which is implemented on traditional friction textile equipment. First, "polyester and vinylon composite filaments with gaps between bonding points" are produced, and then "6-8 filaments The sliver and composite filament are twisted" to form a "hollow yarn with gap distribution"; the presence of polyester filament ensures the strength of the yarn, but the interior of this hollow yarn is a discontinuous void structure, which is not complete Hollow structure, its moisture absorption performance and thermal performance are greatly reduced

Images