CN112725967B - Spinning method of cotton-hemp slub fancy yarn - Google Patents
Spinning method of cotton-hemp slub fancy yarn Download PDFInfo
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- CN112725967B CN112725967B CN202011577107.4A CN202011577107A CN112725967B CN 112725967 B CN112725967 B CN 112725967B CN 202011577107 A CN202011577107 A CN 202011577107A CN 112725967 B CN112725967 B CN 112725967B
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/32—Regulating or varying draft
- D01H5/36—Regulating or varying draft according to a pre-arranged pattern, e.g. to produce slubs
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
- D02G3/042—Blended or other yarns or threads containing components made from different materials all components being made from natural material
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/04—Linen
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/08—Ramie
Abstract
The invention relates to a spinning method of cotton-flax slub fancy yarn, which comprises the steps of drafting cotton roving and flax roving respectively, converging and gathering the cotton roving and the flax roving, twisting and winding the cotton roving and the flax roving to obtain the cotton-flax slub fancy yarn; the sum of the feeding weights of the cotton roving and the hemp roving is not changed; a cotton yarn section, a transition section for the cotton yarn section to be transited to a ramie yarn section, and a transition section for the ramie yarn section to be transited to the cotton yarn section form a circulating unit, and the length ratio of the cotton yarn section, the transition section for the cotton yarn section to be transited to the ramie yarn section, and the transition section for the ramie yarn section to be transited to the cotton yarn section is a fixed value; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 100:0 to 0:100 when the cotton yarn section is transited to the hemp yarn section; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 0:100 to 100:0 when the hemp yarn section is transited to the cotton yarn section. The cotton and linen slub fancy yarn woven by the method disclosed by the invention is softer in hand feeling, stronger in three-dimensional sense of fabric style and regular in cloth cover change, and is particularly suitable for the field of fabrics such as clothes.
Description
Technical Field
The invention belongs to the technical field of cotton and linen blended spinning, and relates to a spinning method of cotton and linen slub fancy yarns, in particular to a method for ring spinning cotton and linen slub fancy yarns.
Background
At present, with the progress of the spinning technology, ring spinning can not only spin common yarns, but also spin various fancy yarns such as slub yarns, section color yarns and the like. As shown in fig. 2, when ring spinning fancy yarn, two rovings are usually fed simultaneously to a drafting device of a spinning machine, and the drafting device may simultaneously draft the two rovings or intermittently draft the rovings, respectively. The adopted specific measures are as follows: the drafting device of the spinning machine is composed of four rollers, two pieces of rough yarn are respectively fed by two rollers behind the drafting zone, and the front roller and the middle roller of the spinning machine are main drafting zones. Although the method solves the technical problem of spinning fancy yarns by ring spinning, because the drafting of the rough yarns is mainly completed by the drafting action between the front roller and the middle roller, two rough yarns share one drafting zone, and the distance between the drafting zones is fixed, the requirements on the length and the fineness of the raw materials are higher, and the length and the fineness of the two raw materials are the same or similar.
In recent years, people continuously pursue comfortable and healthy wearing, the requirements for external texture and internal health care are higher and higher, and the application of natural fibers, especially hemp fibers, is wider and wider. Hemp is one of the earliest natural plant fibers utilized by humans, including flax, ramie, hemp, and the like. Nowadays, with the development of spinning industry, fibrilia is widely applied to the fields of clothing and home textiles with its own advantages. China has various hemp crops, wherein the ramie yield accounts for more than 90 percent of the total world yield, and the flax yield is the second world, which provides an extremely unique condition for the hemp textile industry of China. But the hemp products in China at the present stage have single structure and insufficient development and innovation capability, and become important factors which hinder the development of the hemp textile industry. The cotton raw materials in China are in shortage, the market blank depends on import to a great extent, and from the perspective of environmental protection and nature, the cotton-flax blended yarn is a very desirable path for relieving the current situation of cotton shortage in China, fully utilizing natural resources in China and developing the cotton-flax blended yarn. The cotton-flax fabric has the advantages of roughness, stiffness, moisture absorption, moisture dispersion, strong air permeability, good glossiness and the like, is comfortable to wear and not next to the skin, and is popular summer clothing fabric at home and abroad at present.
Aiming at the characteristics of high rigidity, stiffness, large torque resistance, difficult cohesion of fibers, poor fiber length uniformity and difficult spinning of hemp fibers, cotton-hemp blended yarns are spun at the present stage, and all process equipment is generally reformed or optimized on cotton spinning equipment. For example, during carding, the process and equipment configuration of tight-spacing and strong carding are adopted; a heavy pressurization and strong control process is adopted during drawing; properly increasing the twist coefficient of the roving during roving; the spinning adopts the forms of slipping, drafting and the like during spinning, and strictly controls the conditions of temperature, humidity and the like of the spinning, thereby achieving the aim of smooth spinning.
Although the development means and the technology of the cotton-flax blended yarn are improved greatly at the present stage, the length uniformity of the flax fiber is larger and has a certain difference compared with the length of the cotton fiber. The average length of the flax fiber is 15-20 mm, the average length of the ramie fiber is 50-120 mm, the average length of the hemp fiber is 15-20 mm, and the average length of the cotton fiber is 25-33 mm, so that the two raw materials are mixed together in proportion in a drawing process when spinning cotton and hemp, and the space between rollers in drawing, roving, spinning and other processes, the adopted drafting form and other process indexes influencing various aspects of the drafting quality need to be comprehensively considered. Especially, the spun yarn forming process, which is the last process of the yarn forming process, has the greatest influence on the quality of the formed yarn, and because the fibrilia and the cotton fiber share one drafting zone, the phenomena of no drafting, hard ends and the like are very easy to occur during spinning, so that the quality of the formed yarn is greatly influenced.
Disclosure of Invention
The invention aims to solve the technical problems that the cotton-flax blended yarn spun by the method in the prior art has single style and the flax performance cannot be fully utilized, and provides a spinning method of cotton-flax slub fancy yarn, in particular to a method for ring spinning cotton-flax fancy yarn. The linear density of the cotton-linen slub fancy yarn spun by the spinning method, namely the yarn number, is kept unchanged, but the degree of twist of the yarn is changed due to the inconsistent internal and external transfer degrees of the fibers, so that the diameter of the cross section of the yarn is changed, and the yarn presents the appearance characteristic of the slub yarn. The invention discloses a spinning method of ring spinning fancy yarn, which is characterized in that two pieces of rough yarn are respectively fed into a drafting device of a spinning frame, the drafting device is composed of two independent drafting zones, the two drafting zones are independently controlled, the drafting effect can be simultaneously or independently performed on two different rough yarn strips, and the drafting distance of the two drafting zones can be adjusted, so that the types of the spun yarn spun by ring spinning are greatly widened, the problem that the spun yarn cannot be spun when the fiber length difference is too large during the ring spinning is solved, and the ring spinning fancy yarn has better use prospect and higher economic value.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a spinning method of cotton and linen slub fancy yarn comprises the steps of drafting cotton roving and linen roving respectively, converging and gathering, twisting and winding to obtain the cotton and linen slub fancy yarn;
the cotton and linen slub fancy yarn consists of a plurality of cotton yarn sections, a plurality of linen yarn sections and a transition section for connecting the cotton yarn sections and the linen yarn sections; a cotton yarn section, a transition section for the cotton yarn section to be transited to a ramie yarn section, and a ramie yarn section and a transition section for the ramie yarn section to be transited to the cotton yarn section form a circulating unit; in the circulating unit, the length ratio of a cotton yarn section, a transition section of the cotton yarn section to the ramie yarn section, and a transition section of the ramie yarn section to the cotton yarn section is a fixed value;
the sum of the feeding weights of the cotton roving and the hemp roving is not changed;
the transition section is as follows: the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 100:0 to 0:100 when the cotton yarn section is transited to the hemp yarn section; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 0:100 to 100:0 when the hemp yarn section is transited to the cotton yarn section.
As a preferred technical scheme:
according to the spinning method of the cotton and linen slub fancy yarn, the quantitative amount of the cotton roving is 5-10 g/10m, and the quantitative amount of the linen roving is 5-10 g/10 m. In order to ensure that the drafting quality of the drafting device for the cotton roving and the hemp roving is stable, the quantitative quantity of the cotton roving and the quantitative quantity of the hemp roving are kept within a certain range.
According to the spinning method of the cotton and linen slub fancy yarn, the drafting of the cotton roving is independently drafted by the drafting mechanism I; independently drafting the rough yarns by a drafting mechanism II; the drafting mechanism I and the drafting mechanism II are independently controlled. The drafting of the cotton roving and the hemp roving is controlled by the drafting mechanisms which are respectively and independently controlled, and the respective roller gauge of the two drafting areas, the control of the leather roller and the leather ring and the pressure of the cradle can be set according to different technical requirements of cotton spinning and hemp spinning.
In the method for spinning the cotton/linen slub fancy yarn, the converging and converging means that the cotton fiber slivers obtained by drafting the cotton roving and the linen fiber slivers obtained by drafting the linen roving are converged and guided by the converging groove or the converging horn mouth, and then are held and output by the converging roller and the converging leather roller.
The twisting refers to the twisting of the cotton and hemp fiber strands held by the gathering roller and the gathering leather roller by the steel wire ring and the spindle, and the rotating speed of the spindle is unchanged; the set twist of the cotton and linen slub fancy yarn is unchanged, and the set twist is 300-500 twists/m.
According to the spinning method of the cotton and linen slub yarn, the yarn count of the cotton and linen slub yarn is unchanged, and the yarn count of the cotton and linen slub yarn is 10-40 English counts. The yarn count is maintained by controlling the speed of the respective feeding back rollers by the cotton roving and the hemp roving, the two rollers are independently controlled, but the sum of the total amount of the fibers fed by the two rollers is kept unchanged during rotation.
According to the spinning method of the cotton and linen slub fancy yarn, the raw material of the linen roving is ramie, flax or hemp.
The spinning method of the cotton-hemp slub fancy yarn comprises the steps that the ratio of cotton fibers to hemp fibers in the cotton-hemp slub fancy yarn is changed continuously and alternately, the twist of the cotton-hemp slub fancy yarn is changed alternately along with the continuous change of the ratio of the cotton fibers to the hemp fibers, when the cotton fiber proportion in the fancy yarn is larger than the hemp fibers, the fibers in the yarn are combined tightly, the fibers are transferred fully inside and outside, and when the hemp fiber proportion in the fancy yarn is larger than the cotton fibers, the fibers in the yarn are combined loosely, and the fibers are transferred insufficiently inside and outside.
The method for spinning the cotton and linen slub yarn comprises the steps that the cross section diameter of the cotton and linen slub yarn is changed continuously and alternately along with the continuous alternate change of the ratio of cotton fibers to linen fibers, the cotton and linen slub yarn has the characteristic of gradual change slub yarn along the longitudinal direction, the cross section diameter of a cotton section of the cotton and linen slub yarn section is the smallest, the cross section diameter of a linen yarn section is the largest, the cross section diameter of the yarn at the transition section from the cotton section to the linen section is gradually increased, and the cross section diameter of the yarn at the transition section from the linen section to the cotton section is gradually decreased; the diameter of the cross section of the cotton yarn section is 90-95% of that of the hemp yarn section
The invention principle is as follows:
the cotton and hemp slub fancy yarn spun by the invention has the advantages that the number of the yarn is kept unchanged, but because the conditions that the cotton fiber and the hemp fiber are transferred inside and outside the fiber during twisting are different, the twist of different yarn sections is changed along with the constant change of the proportion of the cotton fiber and the hemp fiber in the yarn, the longitudinal appearance of the yarn is also distinguished in different yarn sections, the twist of the yarn of the cotton yarn sections is the highest, the combination degree between the fibers is the tightest, and the diameter of the cross section of the yarn is the smallest; in the cotton-flax transition section, the twist of the yarn is gradually reduced along with the increase of the proportion of the fibrilia, and the diameter of the cross section of the yarn is gradually increased; in the ramie yarn section, the twist of the yarn is reduced to the minimum, and the cross section diameter of the yarn is the maximum, so that the surface appearance of the yarn presents the style characteristic of slub yarn. The textile fabrics spun by the spinning method of the invention have softer hand feeling and more plump three-dimensional property than the textile fabrics spun by the cotton-flax blended yarns, have the characteristics of slub yarn fabrics, and can be widely applied to the field of fabrics of clothes, home textiles, decoration and the like.
When the cotton and linen slub fancy yarn is spun, the excellent spinnability of cotton fiber is fully utilized, so that the spinning quality is more stable, and the phenomenon of end breakage during spinning is reduced by 40-50% compared with other cotton and linen blended yarn methods; and the proportion of the fibrilia is changed in a certain proper range, so that the performances of the textile fabric of the yarn, such as air permeability, stiffness, drapability and the like, can have the performance advantages of the fibrilia. In addition, although the yarn count of the cotton-linen slub fancy yarn spun by the invention is unchanged, the cotton-linen slub fancy yarn has the appearance style characteristics of slub yarn and the slub rule is determined, so that the fabric made of the yarn has stronger layering, the fibrilia is more fully utilized, and the fabric made of the yarn is more suitable for the fabric fields of decoration, clothes and the like.
Advantageous effects
Compared with the prior art, the spinning method of the cotton and hemp slub fancy yarn has the following advantages:
(1) the cotton and linen fancy yarn spinning method has two independent drafting zones, and the cotton fiber and the linen fiber are respectively drafted through different drafting zones, so that the better drafting quality of the linen fiber and the cotton fiber can be ensured, and the spun yarn has stable quality;
(2) the cotton-linen slub fancy yarn spun by the method has the advantages of softer hand feeling, stronger three-dimensional sense of fabric style and regular cloth cover change, and is particularly suitable for the fabric field of clothes and the like.
Drawings
FIG. 1 is a schematic view of a spinning draft device used in a method of spinning cotton-flax yarns according to the present invention;
FIG. 2 is a schematic view of a spinning draft device for ring spinning fancy yarn;
fig. 3 is a schematic cross-sectional view of a yarn obtained by a method of spinning a cotton yarn according to the present invention.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A spinning method of cotton and linen slub fancy yarn comprises the steps of drafting cotton roving and linen roving respectively, converging and gathering, twisting and winding to obtain the cotton and linen slub fancy yarn; the converging and gathering means that the cotton fiber strands obtained by drafting the cotton roving and the fibrilia strands obtained by drafting the fibrilia roving are converged and guided by a converging groove or a converging horn mouth and then are held and output by a gathering roller and a gathering leather roller; the twisting refers to the twisting of the cotton and hemp fiber strands held by the gathering roller and the gathering leather roller by the steel wire ring and the spindle, and the rotating speed of the spindle is unchanged; the twist of the cotton-linen slub fancy yarn is unchanged, and the twist is set to be 300-500 twists/m;
the raw material of the hemp roving is ramie, flax or hemp;
the quantitative amount of the cotton roving is 5-10 g/10m, and the quantitative amount of the hemp roving is 5-10 g/10 m;
as shown in fig. 1, the drafting of the cotton roving is independently drafted by a drafting mechanism I; independently drafting the rough yarns by a drafting mechanism II; the drafting mechanism I and the drafting mechanism II are independently controlled;
the sum of the feeding weights of the cotton roving and the hemp roving is not changed; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 100:0 to 0:100 when the cotton yarn section is transited to the hemp yarn section; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 0:100 to 100:0 when the hemp yarn section is transited to the cotton yarn section;
as shown in fig. 3, the yarn count of the produced cotton and linen slub yarn is constant, and the yarn count of the cotton and linen slub yarn is 10-40 english; the cotton and linen slub fancy yarn consists of a plurality of cotton yarn sections, a plurality of linen yarn sections and a transition section for connecting the cotton yarn sections and the linen yarn sections; a cotton yarn section, a transition section for the cotton yarn section to be transited to a ramie yarn section, and a ramie yarn section and a transition section for the ramie yarn section to be transited to the cotton yarn section form a circulating unit; in the circulating unit, the length ratio of a cotton yarn section, a transition section of the cotton yarn section to the ramie yarn section, and a transition section of the ramie yarn section to the cotton yarn section is a fixed value; the proportion of the cotton fiber and the fibrilia in the cotton-ramie slub fancy yarn is changed continuously and alternately, and the twist of the cotton-ramie slub fancy yarn is changed alternately along with the continuous and alternate change of the proportion of the cotton fiber and the fibrilia; the cross section diameter of the cotton and linen slub fancy yarn is continuously and alternately changed along with the continuous and alternate change of the ratio of cotton fibers and linen fibers, the cross section diameter of a cotton section of the cotton and linen slub fancy yarn is the smallest, the cross section diameter of a linen section is the largest, the cross section diameter of the yarn at the transition section from the cotton section to the linen section is gradually increased, and the cross section diameter of the yarn at the transition section from the linen section to the cotton section is gradually decreased; the diameter of the cross section of the cotton yarn section is 90-95% of that of the ramie yarn section.
Example 1
A spinning method of cotton and linen slub fancy yarn comprises the steps of drafting cotton roving and linen roving respectively, converging and gathering, twisting and winding to obtain the cotton and linen slub fancy yarn;
the quantitative amount of the cotton roving is 5g/10 m; the raw material of the ramie roving is ramie, and the quantitative amount of the ramie roving is 5g/10 m; the twist number of the cotton and linen fancy yarn is not changed, and the twist number is set to be 300 twists/m;
the drafting of the cotton roving is independently drafted by a drafting mechanism I; independently drafting the rough yarns by a drafting mechanism II; the drafting mechanism I and the drafting mechanism II are independently controlled;
the sum of the feeding weights of the cotton roving and the hemp roving is not changed; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 100:0 to 0:100 when the cotton yarn section is transited to the hemp yarn section; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 0:100 to 100:0 when the hemp yarn section is transited to the cotton yarn section; during spinning, when a pure cotton yarn section is spun, the speed of a rear roller fed into a cotton roving frame reaches the maximum, the speed of the rear roller fed into the hemp roving frame is 0, and only cotton fibers are fed, and hemp fibers are not fed; the cotton and linen transition section gradually reduces the speed of the rear roller for feeding the cotton roving and gradually increases the speed of the rear roller for feeding the linen roving along with the reduction of the proportion of the cotton fibers and the increase of the proportion of the linen fibers.
The prepared cotton and linen slub fancy yarn consists of a plurality of cotton yarn sections, a plurality of linen yarn sections and a transition section for connecting the cotton yarn sections and the linen yarn sections; a cotton yarn section, a transition section for the cotton yarn section to be transited to a ramie yarn section, and a ramie yarn section and a transition section for the ramie yarn section to be transited to the cotton yarn section form a circulating unit; in the circulating unit, the length ratio of a cotton yarn section, a transition section of the cotton yarn section to the ramie yarn section, and a transition section of the ramie yarn section to the cotton yarn section is a fixed value, and the corresponding ratio is 1:1:1: 1; the yarn count of the cotton-linen slub fancy yarn is unchanged, and the yarn count of the cotton-linen fancy yarn is 10 English; the proportion of the cotton fiber and the fibrilia in the cotton-ramie slub fancy yarn is changed continuously and alternately, and the twist of the cotton-ramie slub fancy yarn is changed alternately along with the continuous and alternate change of the proportion of the cotton fiber and the fibrilia; the cross section diameter of the cotton and linen slub fancy yarn is continuously and alternately changed along with the continuous and alternate change of the ratio of cotton fibers and linen fibers, the cross section diameter of a cotton section of the cotton and linen slub fancy yarn is the smallest, the cross section diameter of a linen section is the largest, the cross section diameter of the yarn at the transition section from the cotton section to the linen section is gradually increased, and the cross section diameter of the yarn at the transition section from the linen section to the cotton section is gradually decreased; the diameter of the cross section of the cotton yarn section is 90% of the diameter of the cross section of the ramie yarn section.
The fabric made of the produced cotton-hemp slub fancy yarn is a plain weave fabric, when the fabric density is 100 x 100, the air permeability of the pure cotton section of the fabric is 400l/m2(s) stiffness bending length is 10cm, and suspension coefficient is 70%; the air permeability of the cotton-flax transition section and the flax-cotton transition section is 500l/m2(s) stiffness bending length of 8.6cm, and suspension coefficient of 80%; the air permeability of the pure hemp section is 1000l/m2(s) a stiff and smooth bending length of 7cm and a drape coefficient of 95%.
Example 2
A spinning method of cotton and linen slub fancy yarn comprises the steps of drafting cotton roving and linen roving respectively, converging and gathering, twisting and winding to obtain the cotton and linen slub fancy yarn;
the quantitative amount of the cotton roving is 10g/10 m; the raw material of the hemp roving is hemp, and the quantitative amount is 10g/10 m; the twist number of the cotton and linen fancy yarn is not changed, and the twist number is set to be 400 twists/m;
the drafting of the cotton roving is independently drafted by a drafting mechanism I; independently drafting the rough yarns by a drafting mechanism II; the drafting mechanism I and the drafting mechanism II are independently controlled;
the sum of the feeding weights of the cotton roving and the hemp roving is not changed; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 100:0 to 0:100 when the cotton yarn section is transited to the hemp yarn section; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 0:100 to 100:0 when the hemp yarn section is transited to the cotton yarn section; during spinning, when a pure cotton yarn section is spun, the speed of a rear roller fed into a cotton roving frame reaches the maximum, the speed of the rear roller fed into the hemp roving frame is 0, and only cotton fibers are fed, and hemp fibers are not fed; the cotton and linen transition section gradually reduces the speed of the rear roller for feeding the cotton roving and gradually increases the speed of the rear roller for feeding the linen roving along with the reduction of the proportion of the cotton fibers and the increase of the proportion of the linen fibers.
The prepared cotton and linen slub fancy yarn consists of a plurality of cotton yarn sections, a plurality of linen yarn sections and a transition section for connecting the cotton yarn sections and the linen yarn sections; a cotton yarn section, a transition section for the cotton yarn section to be transited to a ramie yarn section, and a ramie yarn section and a transition section for the ramie yarn section to be transited to the cotton yarn section form a circulating unit; in the circulating unit, the length ratio of a cotton yarn section, a transition section of the cotton yarn section to the ramie yarn section, and a transition section of the ramie yarn section to the cotton yarn section is a fixed value, and the corresponding ratio is 2:1:2: 1; the yarn count of the cotton and linen fancy yarn is unchanged, and is 20 English; the proportion of the cotton fiber and the fibrilia in the cotton-ramie slub fancy yarn is changed continuously and alternately, and the twist of the cotton-ramie slub fancy yarn is changed alternately along with the continuous and alternate change of the proportion of the cotton fiber and the fibrilia; the cross section diameter of the cotton and linen slub fancy yarn is continuously and alternately changed along with the continuous and alternate change of the ratio of cotton fibers and linen fibers, the cross section diameter of a cotton section of the cotton and linen slub fancy yarn is the smallest, the cross section diameter of a linen section is the largest, the cross section diameter of the yarn at the transition section from the cotton section to the linen section is gradually increased, and the cross section diameter of the yarn at the transition section from the linen section to the cotton section is gradually decreased; the diameter of the cross section of the cotton yarn section is 95 percent of the diameter of the cross section of the ramie yarn section.
The fabric made of the produced cotton-hemp slub fancy yarn is 1/2 twill woven fabric, when the fabric density is 150 x 140, the air permeability of the pure cotton section of the fabric is 350l/m2(s) stiffness bending length is 8.5cm, and suspension coefficient is 60%; the air permeability of the cotton-flax transition section and the flax-cotton transition section is 400l/m2(s) stiffness bending length is 8cm, and suspension coefficient is 73%; the air permeability of the pure hemp section is 750l/m2(s) a stiff and smooth bending length of 6.5cm and a drape coefficient of 90%.
Claims (7)
1. A spinning method of cotton-hemp slub fancy yarn is characterized in that: respectively drafting the cotton roving and the ramie roving, converging and gathering the cotton roving and the ramie roving, twisting the cotton roving and the ramie roving, and winding the twisted cotton roving and the ramie roving to obtain cotton-ramie slub fancy yarn;
the drafting of the cotton roving is independently drafted by a drafting mechanism I; independently drafting the rough yarns by a drafting mechanism II; the drafting mechanism I and the drafting mechanism II are independently controlled;
the cotton and linen slub fancy yarn consists of a plurality of cotton yarn sections, a plurality of linen yarn sections and a transition section for connecting the cotton yarn sections and the linen yarn sections; a cotton yarn section, a transition section for the cotton yarn section to be transited to a ramie yarn section, and a ramie yarn section and a transition section for the ramie yarn section to be transited to the cotton yarn section form a circulating unit; in the circulating unit, the length ratio of a cotton yarn section, a transition section of the cotton yarn section to the ramie yarn section, and a transition section of the ramie yarn section to the cotton yarn section is a fixed value;
the sum of the feeding weights of the cotton roving and the hemp roving is not changed;
the transition section is as follows: the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 100:0 to 0:100 when the cotton yarn section is transited to the hemp yarn section; the feeding weight ratio of the cotton roving to the hemp roving is linearly changed from 0:100 to 100:0 when the hemp yarn section is transited to the cotton yarn section;
the cross section diameter of the cotton and linen slub fancy yarn is continuously and alternately changed along with the continuous and alternate change of the ratio of cotton fibers to linen fibers, the cross section diameter of a cotton section of the cotton and linen slub fancy yarn is the smallest, the cross section diameter of a linen section is the largest, the cross section diameter of the yarn at the transition section from the cotton section to the linen section is gradually increased, and the cross section diameter of the yarn at the transition section from the linen section to the cotton section is gradually decreased; the diameter of the cross section of the cotton yarn section is 90-95% of that of the ramie yarn section.
2. The method for spinning the slub fancy cotton yarn according to claim 1, wherein the basis weight of the cotton roving is 5-10 g/10m, and the basis weight of the slub roving is 5-10 g/10 m.
3. The method of claim 1, wherein the converging-converging means that the drafted cotton fiber strands of the cotton roving and the drafted hemp fiber strands of the hemp roving are converged and guided by a converging groove or a converging bell mouth, and then held and output by a converging roller and a converging leather roller.
4. The method for spinning the cotton-hemp slub fancy yarn according to claim 1, wherein the twisting is twisting of the cotton-hemp fiber strands held by the gathering roller and the gathering leather roller by the traveler and the spindle, and the rotation speed of the spindle is not changed; the set twist of the cotton and linen slub fancy yarn is unchanged, and the set twist is 300-500 twists/m.
5. The spinning method of the cotton and linen slub yarn as claimed in claim 1, wherein the yarn count of the cotton and linen slub yarn is constant, and the yarn count of the cotton and linen slub yarn is 10-40 counts.
6. The method of spinning a cotton/linen slub effect yarn according to claim 1, wherein the raw material of the hemp roving is ramie, flax or industrial hemp.
7. The method as claimed in claim 1, wherein the ratio of cotton fiber to hemp fiber in the slub yarn is changed alternately, and the twist of the slub yarn is changed alternately with the ratio of cotton fiber to hemp fiber.
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| JPS60139831A (en) * | 1983-12-26 | 1985-07-24 | Howa Mach Ltd | Manufacture of particular yarn |
| CN1587469A (en) * | 2004-10-10 | 2005-03-02 | 江苏宏源纺机股份有限公司 | Textile drafting mechanism of fancy yarn and drafting method |
| CN103510222A (en) * | 2013-10-14 | 2014-01-15 | 江南大学 | Efficient fine yarn production method |
| CN106133220A (en) * | 2014-04-03 | 2016-11-16 | 株式会社丰田自动织机 | The drafting system of spinning machine and control method thereof |
| CN206219736U (en) * | 2016-11-14 | 2017-06-06 | 江南大学 | A kind of drawing-off spinning apparatus of seven roller three |
| CN109706576A (en) * | 2018-12-24 | 2019-05-03 | 嘉兴学院 | A kind of length fibre slub production method and the fine compound slub of length |
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| JPS60139831A (en) * | 1983-12-26 | 1985-07-24 | Howa Mach Ltd | Manufacture of particular yarn |
| CN1587469A (en) * | 2004-10-10 | 2005-03-02 | 江苏宏源纺机股份有限公司 | Textile drafting mechanism of fancy yarn and drafting method |
| CN103510222A (en) * | 2013-10-14 | 2014-01-15 | 江南大学 | Efficient fine yarn production method |
| CN106133220A (en) * | 2014-04-03 | 2016-11-16 | 株式会社丰田自动织机 | The drafting system of spinning machine and control method thereof |
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