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

A bobbin and high-count technology, applied in the direction of yarn, textiles, papermaking, dry-cleaning fiber products, etc., can solve the problems of affecting subsequent processing, easy entanglement of skeins, low yarn strength, etc., to overcome the reduction of fabric density, yarn Good thread quality and even dimension reduction effect

Inactive Publication Date: 2012-11-28
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Cheese fiber removal method for producing hemp/cotton and linen/ high count cotton yarns
  • Cheese fiber removal method for producing hemp/cotton and linen/ high count cotton yarns
  • Cheese fiber removal method for producing hemp/cotton and linen/ high count cotton yarns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present invention is adopted to realize the de-tightening of hemp / cotton / vinylon single yarn, and 40 S Hemp / cotton high count yarn. The main process is as follows: after mixing 49.5wt% of hemp fiber, 40.5wt% of cotton fiber, and 10wt% of vinylon fiber soluble in water at 40℃, it is spun into 36 S The blended single yarn is then wound to a winding density of 0.35g / cm 3 The yarn weight of the package is 0.3kg, the bath ratio is 1:10, the specific flow is 50L / kg·min, and the water at 60°C is replaced by the three-time water change process.

[0020] After the vinylon is completely removed and dried at 100°C for 4 hours, the fineness is 40 S Hemp / cotton single yarn, and then the single yarn is combined to obtain a fineness of 40 S / 2 hemp / cotton strands. The quality of the hemp / cotton single yarn and strands obtained in this example is shown in Table 1:

[0021]

[0022] Table 1

Embodiment 2

[0024] The present invention is used to realize the de-tightening of hemp / cotton / vinylon single yarn, and 100 S Hemp / cotton high count yarn. The main process flow is as follows: after mixing 16.5wt% hemp fiber, 13.5wt% cotton fiber, and 70wt% vinylon fiber soluble in water at 90°C, spun into 70 S Of hemp / cotton / vinylon blended single yarn, then wind the blended single yarn to a winding density of 0.45g / cm 3 The yarn weight of the package is 0.5kg, the bath ratio is 1:30, the specific flow rate is 70L / kg·min, and the water at 100℃ is replaced by the process of six water changes to remove vinylon.

[0025] After the vinylon is completely removed and dried at 100°C for 4 hours, the fineness is 100 S Hemp / cotton single yarn, and then the single yarn is combined to obtain a fineness of 100 S / 2 hemp / cotton strands. The quality of the hemp / cotton single yarn and strands obtained in this example is shown in Table 2:

[0026]

[0027] Table 2

Embodiment 3

[0029] Spinning with the invention 55 S / 2 Linen / cotton high count yarn. The main process is as follows: after mixing 44wt% flax fiber, 36wt% cotton fiber, and 20wt% vinylon fiber soluble in water at 70℃, it is spun into 55 S The flax / cotton / vinylon blended single yarn, and then the blended single yarn is twisted into 44S / 2 strands, and then the strands are wound to a winding density of 0.4g / cm 3 The yarn weight of the package is 0.4kg, the bath ratio is 1:25, the specific flow is 60L / kg·min, and the water at 100℃ is replaced by the process of six water changes to remove vinylon.

[0030] After the vinylon is completely removed and dried at 100℃ for 4 hours, the fineness is 55. S / 2 linen / cotton strands. The quality of the hemp / cotton single yarn and strands prepared in this example are shown in Table 3:

[0031]

[0032] table 3

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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, aliquor 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 fromthe 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 method for producing 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 quickly, has strong adaptability, few pests, no pesticides, only 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 UV resistance, excellent high temperature resistance, unique absorption performance and natural rough style, known as " The King of Mazhong". Flax fiber also has many excellent properties. It absorbs moisture and dissipates heat, is health-care and antibacterial, anti-fouling, anti-static, anti-ultraviolet, and has excellent flame retardant effect...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/04D06L1/12
Inventor 杨建平陈芬芬郁崇文马卫明
Owner DONGHUA UNIV
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