Cheese fiber removal method for producing hemp/cotton and linen/ high count cotton yarns

Abstract

The invention provides a cheese fiber removal method for producing hemp/cotton and linen/ high count cotton yarns, which comprises the following steps of: (1) winding blended spinning single yarns or blended spinning compound yarns on a loose type cheese winder into cheese; (2) controlling the following production conditions on a cheese dyeing machine: a temperature of between 60 and 100 DEG C, a liquor ratio of between 1:10 and 1:30, water exchange times of 1 to 6, a specific discharge of 50 to 70L/kg.min, and fiber removal time of 1 to 6 hours; and (3) removing water soluble PVA fibers from the cheese to obtain high count single yarns or high count compound yarns of hemp/cotton or linen/cotton. The single yarns or the compound yarns obtained after fiber removal by the method have the advantages of uniform fiber removal, capability of realizing high-speed unwinding without winding, and capability of being directly used in post processing of weaving and knitting, thereby laying the foundation for revealing the superior performances of the hemp/cotton and the linen/cotton, widening the application scope of hemp/cotton and linen/cotton products, and producing thin hemp/cotton and linen/cotton products with high quality.

Description

technical field [0001] The invention relates to a production method of hemp / cotton and flax / cotton high-count yarns, belonging to the technical field of textile engineering. Background technique [0002] Hemp is also called thread hemp, cloud hemp, hemp, hemp, etc. Hemp grows rapidly, has strong adaptability, has few pests and diseases, does not need pesticides, only needs a small amount of water and fertilizer, and can be decomposed naturally. It is an environmentally friendly textile raw material. Hemp fiber has excellent moisture absorption and perspiration performance, natural antibacterial health care performance, good soft and comfortable performance, excellent anti-ultraviolet performance, excellent high temperature resistance performance, unique wave absorption performance and natural rough style, known as " The King of Hemp". Flax fiber also has many excellent properties, such as moisture absorption and heat dissipation, health care and antibacterial, anti-fouling...

AI Technical Summary

Problems solved by technology

[0003] The single fiber of hemp fiber is too short, generally 15-25mm, the single fiber length of flax fiber is generally 17-25mm, the fiber length uniformity is poor, the fiber is relatively rigid, the cohesion force is small, and spinning is difficult, so it can only be spun Coarse yarn

Cotton fibers are soft, uniform in length and fineness, and good in spinnability, which can make up for the shortcomings of hemp and flax. Therefore, blending of hemp and flax with cotton is one of the current main products, but due to the performance limitations of hemp and flax fibers, Its products blended with cotton fibers are still dominated by low-count hemp / cotton and linen / cotton blended yarns, and the products are 21 S Most of the fabrics are below 28tex, with many grains on the fabric surface, poor evenness, low product grade, and low added value.

The summer clothing that can reflect the excellent properties of hemp and flax requires fine and thin fabrics, and the fineness of its yarns is required to reach 40. S Above (below 16tex), it is still difficult to produce

[0004] In order to solve the contradiction between high-count yarns and fabrics spun from thick fibers, there have been researches and reports on the use of water-soluble vinylon companion spinning, such as the report on ramie spinning high-count yarns: the development of pure ramie high-count thin and refreshing yarn fabrics, However, it uses water-soluble vinylon to spin into yarn, and then dissolves vinylon after forming the fabric to form a high-count thin ramie fabric. It is to de-dimensionalize the formed fabric instead of weaving after de-dimensionalizing the yarn. , due to the dissolution of vinylon fibers, the fabric obtained by this method has low density and many voids, and its application field is limited

[0005] It is also reported that the yarn can be directly de-dimensionalized, but the strength of the de-dimensionalized yarn is low, the strength is uneven, and the evenness is poor. It is very easy to break during winding and twisting, and it cannot be used in the future.

At present, the form of skein yarn is used in the yarn de-dimensionalization, and its technological process is: yarn → winding → skein → de-dimensionalization, washing, drying → winding. The process is long, labor-intensive and time-consuming. Yarn The consumption is high, and because the skeins are relatively loose, the liquid flow will generate local eddy currents in the box, so the skeins are prone to entanglement with each other, which affects the uniformity of the weaving, thereby affecting the subsequent processing

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