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Method for producing hemp high-count yarns and folded yarns through Siro-spinning or Sirofil-spinning

A technology of sirofil spinning and high-count yarn, applied in spinning machine, textile and papermaking, yarn and other directions, can solve the problem of difficulty in producing high-count, high-grade products, restricting the blending or companion spinning of hemp and water-soluble vinylon, Restrict the development of the cannabis industry and other issues, and achieve the effects of good uniformity, uniform strength, and improved quality

Inactive Publication Date: 2012-08-29
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, water-soluble vinylon cannot be mixed with hemp fiber before the spinning process, which greatly limits the feasibility of blending or accompanying spinning of hemp and water-soluble vinylon
[0004] Due to the existence of the above problems, it is difficult to produce high-count and high-end products in the existing hemp wet spinning, which is not conducive to the diversified development of hemp product varieties, limits the promotion and application of hemp products to a large extent, and restricts the hemp industry. development of

Method used

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  • Method for producing hemp high-count yarns and folded yarns through Siro-spinning or Sirofil-spinning
  • Method for producing hemp high-count yarns and folded yarns through Siro-spinning or Sirofil-spinning
  • Method for producing hemp high-count yarns and folded yarns through Siro-spinning or Sirofil-spinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Using the technology of the present invention, 50 public hemp yarns and 50 / 2 public hemp strands are produced. like figure 1 Shown, it is the mixed schematic diagram of siro spinning of hemp roving and water-soluble vinylon roving, and its technology is: the hemp long hemp roving 9 after the scouring and bleaching process is passed through the water tank 7 (90 wt%) of the built-in yarn guide roller 8 in the wet On the spinning frame, the water-soluble vinylon roving 10 (10wt%) is kept at a certain interval of 4mm and fed at the same time. After 1 draft, it is mixed at the output, and the sliver output from the front roller is twisted into a yarn with a metric twist coefficient of 0.80, and a hemp / vinylon blended yarn with a fineness of 45 metric counts is spun out. The blended yarn is put into the aqueous solution for dimension reduction (1:10 liquor ratio), and after 0.5 hours of boiling and washing, the vinylon fiber is dissolved (receded), and the pure hemp yar...

Embodiment 2

[0029] Using the technology of the present invention, 50 public hemp yarns and 50 / 2 public hemp strands are produced. like figure 2 As shown, it is the mixed schematic diagram of the sirofil spinning of hemp roving and water-soluble vinylon single yarn or filament, and its technology is: the hemp roving 11 (67wt%) after the scouring and bleaching process is fed into wet spinning after passing through the water tank 7 Spinning frame, after drafting, the front roller 2 is mixed with 10tex water-soluble vinylon yarn (33wt%) with an interval of 12mm and twisted. The metric twist coefficient is 0.85, and the hemp with a fineness of 33 m / Vinylon blended yarn, and then put the blended yarn into the aqueous solution for dimensional reduction (bath ratio 1:10), after 2 hours of boiling, washing, and dissolving (removing) the vinylon fiber, a 50-mesh yarn was obtained. Pure hemp yarn.

[0030] The obtained 35 public hemp / vinylon blended yarn is reversely plied, and the ratio of th...

Embodiment 3

[0034] The pure hemp yarn of 150 public counts and the hemp strands of 150 / 2 public counts are spun by the present invention. First, 30wt% hemp roving and 70% vinylon roving are fed into the wet spinning frame (the spacing of the rovings is 0), and after drafting and twisting, 50 metric hemp / vinylon blends with a twist coefficient of 1.2 are obtained yarn. Then put it into the aqueous solution for dimension reduction (bath ratio 1:25), after 6 hours of boiling and washing, after dissolving the vinylon fiber in it, a pure hemp yarn of 150 metric counts is obtained.

[0035]The blended yarn produced by the above-mentioned method is reversely plyed and twisted, and the ratio of the twist coefficient of the strand to the single yarn twist coefficient is 1.3 to obtain a 50 / 2 public hemp / vinylon blended strand, and then put it in. After 6 hours of boiling and washing in the aqueous solution for dimension reduction (bath ratio 1:25), after dissolving the vinylon fiber in it, 15...

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Abstract

The invention relates to a method for producing hemp high-count yarns and folded yarns through Siro-spinning or Sirofil-spinning. The method is characterized by comprising the following steps of: after boiling off and bleaching hemp roving, feeding the hemp roving together with water-soluble vinylon roving, a single yarn or a continuous yarn into a wet spinning frame to realize blending; after obtaining blended yarns of hemp / water-soluble vinylon, boiling and dissolving the blended yarns in aqueous solution to remove vinylon fibers so as to obtain the hemp high-count yarns; and reversely plying and twisting the blended yarns to form the folded yarns, then removing the vinylon to obtain the hemp high-count folded yarns, or reversely plying and twisting the blended yarns after removing the vinylon to obtain the hemp high-count folded yarns. The method can adopt conventional hemp fibers to spin the high-count pure hemp yarns and folded yarns, thereby solving the current problems that theconventional high-quality hemp raw materials deficient and the hemp high-count yarns are limited within 36 to 60 metric counts, and realizing the development of hemp products toward high count, high grade and species diversity.

Description

technical field [0001] The invention relates to a method for producing hemp high-count yarns and strands by siro spinning or sirofil spinning, and belongs to the technical field of textile engineering. Background technique [0002] Hemp is a natural fiber with excellent performance. It absorbs and releases moisture quickly and has good air permeability. It is an ideal fabric for summer wear. As early as 3,000 years ago, there were records of the application of hemp textile in my country. Later, because the THC contained in cannabis plants is a kind of drug, the world has strict regulations on the cultivation of cannabis, and only cannabis varieties with THC content less than the specified value are allowed to be cultivated. At present, as the international community pays more and more attention to the development of natural fiber resources, the prohibition on the cultivation of hemp with excellent characteristics is gradually lifted, and hemp is getting more and more applic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/02D02G3/28D01H5/26
Inventor 郁崇文裴泽光胡碧玉张含飞杨建平张元明
Owner DONGHUA UNIV
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