Cotton, bamboo and wool blended yarn and production method and application thereof

Abstract

The invention discloses a cotton, bamboo and wool blended yarn and a production method and application thereof, and belongs to the technical field of spinning. In the cotton, bamboo and wool blended yarn, the mass ratio of fine staple cotton fibers is 50-55%, the mass ratio of fine denier bamboo fibers is 25-30%, and the mass ratio of wool fibers is 15-20%. In addition, the invention further provides a production method of the cotton, bamboo and wool blended yarn, which comprises the following steps: processing the fine denier bamboo fibers and the wool fibers into pre-drawing strips through a blowing process, a cotton carding process and a pre-drawing process; the pre-drawn slivers and the combed slivers are sequentially subjected to a drawing procedure, a roving procedure, a spinning procedure and a spooling procedure, and the cotton, bamboo and wool blended yarn is obtained. In addition, the invention further provides application of the cotton, bamboo and wool blended yarn in manufacturing of special military garment materials and household textiles. The cotton, bamboo and wool blended yarn is high in strength.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a cotton, bamboo and wool blended yarn and a production method and application thereof. Background Art

[0002] Cotton fiber is a commonly used spinning material. The fabric made of it has the advantages of moisture absorption, breathability, high strength, etc., which meets the physiological needs of human skin, but the fabric is prone to mold, yellowing and wrinkling. Bamboo fiber fabric is smooth and soft, and has certain antibacterial and antibacterial effects, but the fabric is not strong enough and has poor durability. Wool fiber fabric has excellent elasticity and good warmth retention, but the fabric is prone to insect infestation and felting and pilling.

[0003] At present, there are endless single varieties of yarns on the market, and the fabric performance has its own advantages, but the product quality is uneven. Fabrics made of multi-component yarns have more comprehensive performance and can better meet people's growing needs of life. However, due to the difficulty of blending and high requirements on yarn quality, the corresponding products still have a lot of room for development. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies, provide a cotton, bamboo and wool blended yarn and a production method and application thereof, and solve the technical problem in the prior art that it is difficult to obtain high-strength blended yarn using bamboo fiber as raw material.

[0005] In order to achieve the above technical objectives, the technical solution of the present invention provides a cotton, bamboo and wool blended yarn, in which the mass proportion of fine cotton fiber is 50-55%, the mass proportion of fine denier bamboo fiber is 25-30%, and the mass proportion of wool fiber is 15-20%; the performance parameters of the fine denier bamboo fiber include: breaking strength 2.2-2.3cN / dtex, elongation at break 21.8-22%.

[0006] In any embodiment, the performance parameters of the wool fiber include: linear density 5.25-5.27 dtex, length 50-51 mm, breaking strength 3.4-3.6 cN / dtex, elongation at break 5.2-5.5%; and / or, the performance parameters of the fine cotton fiber include: breaking strength 2.7-2.9 cN / dtex, elongation at break 3.5-3.7%.

[0007] In any embodiment, the cotton, bamboo and wool blended yarn is a compact blended yarn with a count of 40 to 60.

[0008] In addition, the present invention also provides a method for producing the above-mentioned cotton, bamboo and wool blended yarn, comprising the following steps:

[0009] S1, processing the fine cotton fiber into combed sliver through a cotton blowing process, a cotton combing process, and a combing process;

[0010] S2, processing the fine-denier bamboo fiber and the wool fiber into pre-drawn slivers through a cleaning process, a combing process, and a pre-drawing process, and then subjecting the pre-drawn slivers and the combed slivers to a drawing process, a roving process, a spinning process, and a winding process in sequence to obtain the cotton-bamboo-wool blended yarn.

[0011] In any embodiment, in the cotton cleaning process of step S1 or step S2, the beater speed of the cotton plucking machine is 930-936 r / min, and the blade extends out of the rib height by 2 mm; the cotton mixing machine cotton averaging roller speed is 150-160 r / min, the first beater speed is 270-280 r / min, and the second beater speed is 330-335 r / min; the cotton opening machine cotton feeding roller speed is 35-37 r / min, the cotton condenser speed is 800-810 r / min, and the porcupine beater speed is 400-410 r / min; the cotton roll roller speed of the rolling machine is 11-12 r / min, and the comprehensive beater speed is 800-810 r / min.

[0012] In any embodiment, in the cotton cleaning process of step S1, the dry weight of the fine-denier cotton fiber roll is 370-375 g / m; and / or, in the cotton cleaning process of step S2, the dry weight of the fine-denier bamboo fiber and wool fiber mixed roll is 335-340 g / m.

[0013] In any embodiment, in the carding process in step S1, the carding machine licker-in speed is 750-760r / min, the cylinder speed is 320-330r / min, the doffer speed is 18-19r / min, and the fine-cotton fiber sliver dry weight is 19-19.2g / 5m; and / or, in the carding process in step S2, the carding machine licker-in speed is 750-760r / min, the cylinder speed is 320-330r / min, the doffer speed is 18-19r / min, and the fine-denier bamboo fiber and wool fiber mixed sliver dry weight is 16.0-17.0g / 5m.

[0014] In any embodiment, in the drawing process of step S2, pre-drawing: roller gauge 21*33mm, mechanical drafting multiple 7.28, back zone drafting multiple 1.76, combined number of 8 strands, fine denier bamboo fiber and wool fiber mixed pre-drawing dry weight 18-18.3g / 5m; first drawing: roller gauge 12*20mm, mechanical drafting multiple 8.75, back zone drafting multiple 1.76, pre-drawing and combed strip combined number ratio 4:4, first drawing dry weight 16.2-16.4g / 5m; second drawing: roller gauge 45*50mm, combined number of 8 strands, second drawing dry weight 16.0-16.2g / 5m; final drawing: roller gauge 45*50mm, combined number of 8 strands, final drawing dry weight 15.8-16.0g / 5m.

[0015] In any embodiment, in the roving process of step S2, the jaw gauge is 7mm, the roller gauge is 12*24*35mm, the roller speed is 175-178r / min, and the wet weight of the roving is 4.8-5.0g / 10m; and / or, in the spun yarn process of step S2, the jaw gauge is 2.5-3mm, the roller speed is 129-178r / min, the mechanical draft multiple is 34.98-53.56, the twist coefficient is 357.4-401.3, and the wet weight of the spun yarn is 0.98-1.48g / 100m; and / or, in the winding process of step S2, the vehicle speed is 600m / min, and the self-winding tension is 1cN; the electro-clearing parameters are: cotton knot N: 200%×0.4cm, short thick S: 120%×1.2cm, long thick L: 55%×38cm, and fine detail T: -35%×35cm.

[0016] In addition, the present invention also proposes an application of the cotton, bamboo and wool blended yarn or the cotton, bamboo and wool blended yarn produced by the above production method in the production of special military clothing fabrics and household textiles.

[0017] Compared with the prior art, the beneficial effects of the present invention include: the present invention proposes a cotton, bamboo and wool blended yarn, in which the mass proportion of fine cotton fiber is 50-55%, the mass proportion of fine denier bamboo fiber is 25-30%, and the mass proportion of wool fiber is 15-20%; the performance parameters of the fine denier bamboo fiber include: breaking strength 2.2-2.3cN / dtex, elongation at break 21.8-22%, the cotton, bamboo and wool blended yarn has high strength, is soft and smooth, has uniform yarn dryness, and has the characteristics of moisture absorption and breathability, antibacterial and deodorizing, wear resistance, wrinkle resistance and UV resistance. DETAILED DESCRIPTION

[0018] The "range" disclosed in the present application is defined in the form of a lower limit and an upper limit, and a given range is defined by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundaries of the particular range. The range defined in this way can be inclusive or exclusive of the end values, and can be arbitrarily combined, that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 60 to 120 and 80 to 110 is listed for a particular parameter, it is understood that a range of 60 to 110 and 80 to 120 is also expected. In addition, if the minimum range values ​​1 and 2 are listed, and if the maximum range values ​​3, 4 and 5 are listed, the following ranges can all be expected: 1 to 3, 1 to 4, 1 to 5, 2 to 3, 2 to 4 and 2 to 5. In the present application, unless otherwise specified, the numerical range "a to b" represents an abbreviation of any real number combination between a and b, where a and b are both real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" are listed in this document, and "0-5" is just an abbreviation of these numerical combinations. In addition, when a parameter is expressed as an integer ≥ 2, it is equivalent to disclosing that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0019] If there is no special explanation, the "include" and "comprising" mentioned in this application are open-ended or closed-ended. For example, the "include" and "comprising" may mean that other components not listed may also be included or only the listed components may be included or only the listed components may be included.

[0020] If not specifically stated, in this application, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0021] The present specific embodiment provides a cotton, bamboo and wool blended yarn, in which the mass proportion of fine cotton fiber is 50-55%, the mass proportion of fine denier bamboo fiber is 25-30%, and the mass proportion of wool fiber is 15-20%; the performance parameters of the fine denier bamboo fiber include: breaking strength 2.2-2.3 cN / dtex, elongation at break 21.8-22%; the performance parameters of the wool fiber include: linear density 5.25-5.27 dtex, length 50-51 mm, breaking strength 3.4-3.6 cN / dtex, elongation at break 5.2-5.5%; the performance parameters of the fine denier cotton fiber include: breaking strength 2.7-2.9 cN / dtex, elongation at break 3.5-3.7%; the cotton, bamboo and wool blended yarn is a compact blended yarn with a count of 40 to 60.

[0022] This specific embodiment also proposes a method for producing the above-mentioned cotton, bamboo and wool blended yarn, comprising the following steps:

[0023] S1. Processing the fine-staple cotton fiber into combed sliver through a cleaning process, a combing process and a combing process; in the cleaning process, the dry weight of the fine-staple cotton fiber roll is 370-375 g / m; in the combing process, the licker-in speed of the carding machine is 750-760 r / min, the cylinder speed is 320-330 r / min, the doffer speed is 18-19 r / min, and the dry weight of the fine-staple cotton fiber sliver is 19-19.2 g / 5m;

[0024] S2, processing the fine-denier bamboo fiber and the wool fiber into pre-drawing through a cleaning process, a combing process, and a pre-drawing process, and then subjecting the pre-drawing and the combed sliver to a drawing process, a roving process, a spinning process, and a winding process in sequence to obtain the cotton-bamboo-wool blended yarn; in the cleaning process, the dry weight of the mixed cotton roll of the fine-denier bamboo fiber and the wool fiber is 335-340g / m; in the combing process, the licker-in speed of the carding machine is 750-760r / min, the cylinder speed is 320-330r / min, and the doffer speed is 18-19 r / min, the dry weight of the mixed sliver of fine denier bamboo fiber and wool fiber is 16.0-17.0g / 5m; in the drawing process, pre-drawing: roller gauge 21*33mm, mechanical drafting multiple 7.28, back zone drafting multiple 1.76, combined number of 8 roots, the dry weight of the mixed pre-drawing of fine denier bamboo fiber and wool fiber is 18-18.3g / 5m; combined: roller gauge 12*20mm, mechanical drafting multiple 8.75, back zone drafting multiple 1.76, pre-drawing and combed sliver combined number ratio 4:4, combined sliver dry weight The weight is 16.2-16.4g / 5m; the second drawing: the roller gauge is 45*50mm, the combined number of roots is 8, and the dry weight of the second drawing is 16.0-16.2g / 5m; the final drawing: the roller gauge is 45*50mm, the combined number of roots is 8, and the final drawing dry weight is 15.8-16.0g / 5m; in the roving process, the jaw gauge is 7mm, the roller gauge is 12*24*35mm, the roller speed is 175-178r / min, and the wet weight of the roving is 4.8-5.0g / 10m; and / or, in step S2 In the spinning process, the jaw spacing is 2.5-3mm, the roller speed is 129-178r / min, the mechanical drafting multiple is 34.98-53.56, the twist coefficient is 357.4-401.3, and the wet weight of the spinning is 0.98-1.48g / 100m; in the winding process, the machine speed is 600m / min, and the self-winding tension is 1cN; the electric clearing parameters are: cotton knot N: 200%×0.4cm, short thick S: 120%×1.2cm, long thick L: 55%×38cm, and thin thin T: -35%×35cm.

[0025] In some embodiments, in the cotton cleaning process of step S1 or step S2, the beater speed of the cotton plucking machine is 930-936 r / min, and the blade extends out of the rib height by 2 mm; the cotton mixing machine cotton averaging roller speed is 150-160 r / min, the first beater speed is 270-280 r / min, and the second beater speed is 330-335 r / min; the cotton opening machine cotton feeding roller speed is 35-37 r / min, the cotton condenser speed is 800-810 r / min, and the porcupine beater speed is 400-410 r / min; the cotton roll roller speed of the rolling machine is 11-12 r / min, and the comprehensive beater speed is 800-810 r / min.

[0026] The invention comprises the following steps: mixing fine-denier bamboo fiber and wool fiber through cleaning, combing into strips and pre-combining, and then conducting drawing, roving, spinning and winding with combed fine-cotton strips to obtain a compact blended yarn with a count of 40 to 60. The obtained cotton, bamboo and wool blended yarn is soft and smooth, with uniform yarn dryness, and has the advantages of moisture absorption and breathability, antibacterial and deodorizing, wear resistance, wrinkle resistance and UV resistance, which makes up for the shortcomings of a single variety of yarn and can be used as knitting yarn, and can be used to make special military clothing fabrics and household textiles.

[0027] This specific embodiment also proposes an application of the above-mentioned bamboo-wool blended yarn or the cotton-bamboo-wool blended yarn produced by the above-mentioned production method in the production of special military clothing fabrics and household textiles.

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] In the present invention, reference is made to “some embodiments”, “this embodiment”, examples, etc., which describe a subset of all possible embodiments, but it can be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0030] If similar descriptions of "first / second" appear in the application documents, the following instructions are added. In the following description, the terms "first\second\third" are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments described herein can be implemented in an order other than that described herein.

[0031] In this embodiment, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, object A and / or object B may represent three situations: object A exists alone, object A and object B exist at the same time, and object B exists alone.

[0032] In the following embodiments, the equipment used are all from the existing technology, including: A002D cotton plucking machine, A035E cotton mixing machine, A036B cotton opener, A076C rolling machine, A186D cotton carding machine, SXF1269A combing machine, FA317A drawing frame, RSB-D22c drawing frame, ASFA411 roving frame, DTM129 spinning frame and 21C-S winding machine.

[0033] Example 1

[0034] The present embodiment proposes a cotton, bamboo and wool blended yarn, in which the mass proportion of fine cotton fiber is 50%, the mass proportion of fine denier bamboo fiber is 30%, and the mass proportion of wool fiber is 20%; the performance indicators of the fine cotton fiber are: linear density 1.74dtex, length 29mm, moisture regain 7.0%, breaking strength 2.9cN / dtex, elongation at break 3.7%, and micronaire value 3.9; the performance indicators of the fine denier bamboo fiber are: linear density 1.11dtex, length 38mm, moisture regain 10.95%, breaking strength 2.2cN / dtex, and elongation at break 21.8%; the performance indicators of the wool fiber are: linear density 5.27dtex, length 51mm, moisture regain 13.96%, breaking strength 3.6cN / dtex, and elongation at break 5.5%; the cotton, bamboo and wool blended yarn is a compact blended yarn with a count of 40.

[0035] The cotton, bamboo and wool blended yarn of the present embodiment is produced by the following steps:

[0036] S1, processing the fine cotton fiber into combed sliver through a cotton blowing process, a cotton combing process, and a combing process;

[0037] S2, processing the fine-denier bamboo fiber and the wool fiber into pre-drawn slivers through a cleaning process, a combing process, and a pre-drawing process, and then subjecting the pre-drawn slivers and the combed slivers to a drawing process, a roving process, a spinning process, and a winding process in sequence to obtain the cotton-bamboo-wool blended yarn.

[0038] 1) In the cleaning process of step S1 or S2:

[0039] Set the beater speed of A002D plucker to 936r / min, and the blade protrudes 2mm above the ribs;

[0040] Set the A035E blending machine's cotton roller speed to 160r / min, the first beater speed to 280r / min, the second beater speed to 335r / min, the porcupine beater speed to 485r / min, the parallel beater-dust bar gauge to 10*18mm, and the porcupine beater-dust bar gauge to 10*22mm;

[0041] Set the feed roller speed of A036B cotton opener to 37r / min, the condenser speed to 810r / min, the porcupine beater speed to 400r / min, and the beater-dust bar spacing to 10*18mm;

[0042] Set the A076C lap forming machine lap roller speed to 12r / min, the comprehensive beater speed to 800r / min, and the beater-dust bar spacing to 8*18mm;

[0043] Put the fine cotton fiber into the round table of the plucking machine and start the machine, and control the dry weight of the fine cotton fiber roll to be 375g / m;

[0044] The fine denier bamboo fiber and wool fiber are mixed in a weight ratio of 60:40 and put into the round table of the plucking machine to start, and the dry weight of the mixed cotton roll of the fine denier bamboo fiber and wool fiber is controlled to be 336g / m;

[0045] During this period, the workshop controlled the moisture regain of raw cotton at 7%, the cleaning and impurity removal rate at 35%, the short fiber growth rate at 3%, the cotton drop rate at 1.5%, and the cotton layer thickness was maintained at 14-16mm.

[0046] 2) In the carding process of step S1 or S2:

[0047] Set the A186D carding machine's licker-in speed to 760r / min, cylinder speed to 330r / min, and doffer speed to 19r / min. AT5610*5611 licker-in wire, AC2030 cylinder wire, AD4030 doffer wire, MCH52D flat wire are preferred, and pay attention to the usage cycle;

[0048] Set the A186D carding machine's licker-in-small bottom gauge to 4*0.5*2mm, the cylinder-cover five-point gauge to 8.7.6.6.7 silk, the small bottom chord length to 160mm, feed the fine-staple cotton fiber roll into the carding machine and start the machine, and control the fine-staple cotton fiber sliver dry weight to 19.2g / 5m;

[0049] Set the A186D carding machine's licker-in-small bottom gauge to 8*0.5*2mm, the cylinder-cover five-point gauge to 10.9.8.8.9 silk, the small bottom chord length to 200mm, feed the fine denier bamboo fiber and wool fiber mixed cotton roll into the carding machine and start the machine, and control the dry weight of the fine denier bamboo fiber and wool fiber mixed raw sliver to 17.0g / 5m;

[0050] 3) In the combing process of step S1:

[0051] The combing gauge of the SXF1269A combing machine is set to 0.3mm, the drafting gauge is 5mm, and the cotton drop gauge is 8.0mm. The fine-staple cotton fiber sliver is fed into the combing machine in 20 small rolls after the combing front sliver and roll process, and the dry weight of the fine-staple cotton fiber combed sliver is controlled to be 18.3g / 5m.

[0052] 4) In the drawing process of step S2;

[0053] Pre-drawing: set the roller gauge of FA317A drawing frame to 21*33mm, the mechanical drafting multiple to 7.28, the back zone drafting multiple to 1.76, feed 8 slivers of fine-denier bamboo fiber and wool fiber mixed slivers into the drawing frame, the sliver delivery speed to 311m / min, and control the dry weight of the pre-drawing of fine-denier bamboo fiber and wool fiber mixed slivers to 18.3g / 5m;

[0054] In addition: set the roller gauge of FA317A drawing frame to 12*20mm, the mechanical drafting multiple to 8.75, the back zone drafting multiple to 1.76, feed the pre-drawn sliver and combed sliver into the drawing frame at a root ratio of 4:4, the delivery speed to 321m / min, and control the dry weight of the drawn sliver to 16.4g / 5m;

[0055] Second draw frame: set the roller gauge of RSB-D22c draw frame to 45*50mm, mechanical drafting multiple to 7.97, back zone drafting multiple to 1.40, feed the first draw frame into the draw frame with 8 draw frames, delivery speed to 400m / min, and control the dry weight of the second draw frame to 16.2g / 5m;

[0056] Final drawing: Set the roller spacing of RSB-D22c drawing frame to 45*50mm, the mechanical drafting multiple to 7.97, the back zone drafting multiple to 1.30, feed the second drawing frame into the drawing frame with 8 strands, the delivery speed to 400m / min, and control the dry weight of the final drawing frame to 16.0g / 5m.

[0057] 5) In the roving process of step S2:

[0058] Set the ASFA411 roving machine jaw gauge to 7mm, roller gauge to 12*24*35mm, roller speed to 178r / min, mechanical drafting multiple to 7.19, rear zone drafting multiple to 1.195, twist coefficient to 107.3, spindle speed to 750r / min, and control the wet weight of the roving to 5.0g / 10m.

[0059] 6) In the spinning process of step S2:

[0060] The jaw spacing of DTM129 spinning machine was set to 2.5mm, the roller spacing was 17.5*37.5mm, the roller speed was 178r / min, the mechanical drafting multiple was 34.98, the back zone drafting multiple was 1.17, the twist coefficient was 357.4, the spindle speed was 14000r / min, the wet weight of the spinning yarn was controlled to be 1.48g / 100m, PG1-42 steel collar and W321 30# steel wire ring were selected, and 40s cotton, bamboo and wool blended yarn was produced by compact spinning.

[0061] 7) In the winding process of step S2:

[0062] Set the 21C-S winding machine speed to 600m / min and the self-winding tension to 1cN;

[0063] Set the electric clearing parameters: cotton knot N: 200% × 0.4cm, short thick S: 120% × 1.2cm, long thick L: 55% × 38cm, detail T: -35% × 35cm.

[0064] Example 2

[0065] The present embodiment proposes a cotton, bamboo and wool blended yarn, in which the mass proportion of fine cotton fiber is 55%, the mass proportion of fine denier bamboo fiber is 30%, and the mass proportion of wool fiber is 15%; the performance indicators of the fine cotton fiber are: linear density 1.74dtex, length 29mm, moisture regain 7.0%, breaking strength 2.9cN / dtex, elongation at break 3.7%, and micronaire value 3.9; the performance indicators of the fine denier bamboo fiber are: linear density 1.11dtex, length 38mm, moisture regain 10.95%, breaking strength 2.2cN / dtex, and elongation at break 21.8%; the performance indicators of the wool fiber are: linear density 5.27dtex, length 51mm, moisture regain 13.96%, breaking strength 3.6cN / dtex, and elongation at break 5.5%; the cotton, bamboo and wool blended yarn is a compact blended yarn with a count of 60.

[0066] The cotton, bamboo and wool blended yarn of the present embodiment is produced by the following steps:

[0067] S1, processing the fine cotton fiber into combed sliver through a cotton blowing process, a cotton combing process, and a combing process;

[0068] S2, processing the fine-denier bamboo fiber and the wool fiber into pre-drawn slivers through a cleaning process, a combing process, and a pre-drawing process, and then subjecting the pre-drawn slivers and the combed slivers to a drawing process, a roving process, a spinning process, and a winding process in sequence to obtain the cotton-bamboo-wool blended yarn.

[0069] 1) In the cleaning process of step S1 or S2:

[0070] Set the beater speed of A002D plucker to 936r / min, and the blade protrudes 2mm above the ribs;

[0071] Set the A035E blending machine's cotton roller speed to 160r / min, the first beater speed to 280r / min, the second beater speed to 335r / min, the porcupine beater speed to 485r / min, the parallel beater-dust bar gauge to 10*18mm, and the porcupine beater-dust bar gauge to 10*22mm;

[0072] Set the feed roller speed of A036B cotton opener to 37r / min, the condenser speed to 810r / min, the porcupine beater speed to 400r / min, and the beater-dust bar spacing to 10*18mm;

[0073] Set the A076C lap forming machine lap roller speed to 12r / min, the comprehensive beater speed to 800r / min, and the beater-dust bar spacing to 8*18mm;

[0074] Put the fine cotton fiber into the round table of the plucking machine and start the machine, and control the dry weight of the fine cotton fiber roll to be 375g / m;

[0075] The fine denier bamboo fiber and wool fiber are mixed in a weight ratio of 60:40 and put into the round table of the plucking machine to start, and the dry weight of the mixed cotton roll of the fine denier bamboo fiber and wool fiber is controlled to be 336g / m;

[0076] During this period, the workshop controlled the moisture regain of raw cotton at 7%, the cleaning and impurity removal rate at 35%, the short fiber growth rate at 3%, the cotton drop rate at 1.5%, and the cotton layer thickness was maintained at 14-16mm.

[0077] 2) In the carding process of step S1 or S2:

[0078] Set the A186D carding machine's licker-in speed to 750r / min, cylinder speed to 320r / min, and doffer speed to 18r / min. AT5610*5611 licker-in wire, AC2030 cylinder wire, AD4030 doffer wire, MCH52D flat wire are preferred, and pay attention to the usage cycle;

[0079] Set the A186D carding machine's licker-in-small bottom gauge to 4*0.5*2mm, the cylinder-cover five-point gauge to 8.7.6.6.7 silk, the small bottom chord length to 160mm, feed the fine-staple cotton fiber roll into the carding machine and start the machine, and control the fine-staple cotton fiber sliver dry weight to 19.1g / 5m;

[0080] Set the A186D carding machine's licker-in-small leak gauge to 8*0.5*2mm, the cylinder-cover five-point gauge to 10.9.8.8.9 silk, the small leak chord length to 200mm, feed the fine denier bamboo fiber and wool fiber mixed cotton roll into the carding machine and start the machine, and control the dry weight of the fine denier bamboo fiber and wool fiber mixed raw sliver to 16.0g / 5m;

[0081] 3) In the combing process of step S1:

[0082] The combing gauge of the SXF1269A combing machine is set to 0.3mm, the drafting gauge is 5mm, and the cotton drop gauge is 8.0mm. The fine-staple cotton fiber sliver is fed into the combing machine in 20 small rolls after the combing front sliver and roll process, and the dry weight of the fine-staple cotton fiber combed sliver is controlled to be 18.3g / 5m.

[0083] 4) In the drawing process of step S2;

[0084] Pre-drawing: set the roller gauge of FA317A drawing frame to 21*33mm, the mechanical drafting multiple to 7.28, the back zone drafting multiple to 1.76, feed 8 slivers of fine-denier bamboo fiber and wool fiber mixed slivers into the drawing frame, the sliver delivery speed to 311m / min, and control the dry weight of the pre-drawing mixed slivers of fine-denier bamboo fiber and wool fiber to 18.2g / 5m;

[0085] In addition: set the roller gauge of FA317A drawing frame to 12*20mm, the mechanical drafting multiple to 8.75, the back zone drafting multiple to 1.76, feed the pre-drawn sliver and combed sliver into the drawing frame at a root ratio of 4:4, the delivery speed to 321m / min, and control the dry weight of the drawn sliver to 16.2g / 5m;

[0086] Second draw frame: set the roller gauge of RSB-D22c draw frame to 45*50mm, mechanical drafting multiple to 7.97, back zone drafting multiple to 1.40, feed the first draw frame into the draw frame with 8 draw frames, delivery speed to 400m / min, and control the dry weight of the second draw frame to 16.1g / 5m;

[0087] Final drawing: Set the roller spacing of RSB-D22c drawing frame to 45*50mm, the mechanical drafting multiple to 7.97, the back zone drafting multiple to 1.30, feed the second drawing frame into the drawing frame with 8 strands, the delivery speed to 400m / min, and control the dry weight of the final drawing frame to 15.8g / 5m.

[0088] 5) In the roving process of step S2:

[0089] Set the ASFA411 roving machine jaw gauge to 7mm, roller gauge to 12*24*35mm, roller speed to 178r / min, mechanical drafting multiple to 7.19, rear zone drafting multiple to 1.195, twist coefficient to 107.3, spindle speed to 750r / min, and control the wet weight of the roving to 4.9g / 10m.

[0090] 6) In the spinning process of step S2:

[0091] The DTM129 spinning machine was set with a jaw gauge of 3mm, an additional pressure rod, a roller gauge of 17.5*37.5mm, a roller speed of 129r / min, a mechanical drafting multiple of 53.56, a rear zone drafting multiple of 1.17, a twist coefficient of 401.3, a spindle speed of 14000r / min, and the wet weight of the spinning yarn was controlled to be 0.98g / 100m; PG1 / 2-38 steel collar and OSS10 / 0 steel wire ring were selected, and 60s cotton, bamboo and wool blended yarn was produced by compact spinning.

[0092] 7) In the winding process of step S2:

[0093] Set the 21C-S winding machine speed to 600m / min and the self-winding tension to 1cN;

[0094] Set the electric clearing parameters: cotton knot N: 200% × 0.4cm, short thick S: 120% × 1.2cm, long thick L: 55% × 38cm, detail T: -35% × 35cm.

[0095] Performance Testing

[0096] The cotton, bamboo and wool blended yarns produced in Examples 1 to 2 were tested for relevant properties according to conventional methods or national standards for yarn quality testing. The test results are shown in Table 1.

[0097] Table 1 Performance test results of cotton, bamboo and wool blended yarn produced in Example 1-2

[0098]

[0099] From the data in Table 1 above, it can be seen that the cotton, bamboo and wool blended yarn produced in Examples 1-2 has good yarn dryness, few cotton knots and high strength. Therefore, the method provided by the present invention can produce 40-60 cotton, bamboo and wool blended yarns of good quality.

[0100] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cotton, bamboo and wool blended yarn, characterized in that: The mass proportion of fine cotton fiber in the blended yarn is 50-55%, the mass proportion of fine denier bamboo fiber is 25-30%, and the mass proportion of wool fiber is 15-20%; The performance parameters of the fine denier bamboo fiber include: breaking strength 2.2-2.3 cN / dtex, breaking elongation 21.8-22%.

2. The cotton, bamboo and wool blended yarn according to claim 1, characterized in that: The performance parameters of the wool fiber include: linear density 5.25-5.27 dtex, length 50-51 mm, breaking strength 3.4-3.6 cN / dtex, elongation at break 5.2-5.5%; and / or, the performance parameters of the fine cotton fiber include: breaking strength 2.7-2.9 cN / dtex, elongation at break 3.5-3.7%.

3. The cotton, bamboo and wool blended yarn according to claim 1, characterized in that: The cotton, bamboo and wool blended yarn is a compact blended yarn with a count of 40 to 60.

4. A method for producing cotton, bamboo and wool blended yarn according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, processing the fine cotton fiber into combed sliver through a cotton blowing process, a cotton combing process, and a combing process; S2, processing the fine-denier bamboo fiber and the wool fiber into pre-drawn slivers through a cleaning process, a combing process, and a pre-drawing process, and then subjecting the pre-drawn slivers and the combed slivers to a drawing process, a roving process, a spinning process, and a winding process in sequence to obtain the cotton-bamboo-wool blended yarn.

5. The method for producing cotton, bamboo and wool blended yarn according to claim 4, characterized in that: In the cotton cleaning process of step S1 or step S2, the beater speed of the plucker is 930-936 r / min, and the blade extends out of the rib height by 2 mm; The speed of the cotton mixing machine's cotton averaging roller is 150-160r / min, the speed of the first beater is 270-280r / min, and the speed of the second beater is 330-335r / min; the speed of the cotton feeding roller of the cotton opener is 35-37r / min, the speed of the cotton condenser is 800-810r / min, and the speed of the porcupine beater is 400-410r / min; the speed of the cotton roll roller of the lap forming machine is 11-12r / min, and the speed of the comprehensive beater is 800-810r / min.

6. The method for producing cotton, bamboo and wool blended yarn according to claim 4, characterized in that: In the cotton cleaning process of step S1, the dry weight of the fine-denier cotton fiber roll is 370-375 g / m; and / or, in the cotton cleaning process of step S2, the dry weight of the fine-denier bamboo fiber and wool fiber mixed roll is 335-340 g / m.

7. The method for producing cotton, bamboo and wool blended yarn according to claim 4, characterized in that: In the carding process in step S1, the carding machine licker-in speed is 750-760 r / min, the cylinder speed is 320-330 r / min, the doffer speed is 18-19 r / min, and the fine-cotton fiber sliver dry weight is 19-19.2 g / 5m; and / or, in the carding process in step S2, the carding machine licker-in speed is 750-760 r / min, the cylinder speed is 320-330 r / min, the doffer speed is 18-19 r / min, and the fine-denier bamboo fiber and wool fiber mixed sliver dry weight is 16.0-17.0 g / 5m.

8. The method for producing cotton, bamboo and wool blended yarn according to claim 4, characterized in that: In the drawing process of step S2, pre-drawing: roller gauge 21*33mm, mechanical drafting multiple 7.28, back zone drafting multiple 1.76, combined root number 8, fine denier bamboo fiber and wool fiber mixed pre-drawing dry weight 18-18.3g / 5m; first drawing: roller gauge 12*20mm, mechanical drafting multiple 8.75, back zone drafting multiple 1.76, pre-drawing and combed strip combined root ratio 4:4, first drawing dry weight 16.2-16.4g / 5m; second drawing: roller gauge 45*50mm, combined root number 8, second drawing dry weight 16.0-16.2g / 5m; final drawing: roller gauge 45*50mm, combined root number 8, final drawing dry weight 15.8-16.0g / 5m.

9. The method for producing cotton, bamboo and wool blended yarn according to claim 4, characterized in that: In the roving process of step S2, the jaw gauge is 7mm, the roller gauge is 12*24*35mm, the roller speed is 175-178r / min, and the wet weight of the roving is 4.8-5.0g / 10m; and / or, in the spun yarn process of step S2, the jaw gauge is 2.5-3mm, the roller speed is 129-178r / min, the mechanical draft multiple is 34.98-53.56, the twist coefficient is 357.4-401.3, and the wet weight of the spun yarn is 0.98-1.48g / 100m; and / or, in the winding process of step S2, the vehicle speed is 600m / min, and the self-winding tension is 1cN; the electro-clearing parameters are: cotton knot N: 200%×0.4cm, short thick S: 120%×1.2cm, long thick L: 55%×38cm, and fine detail T: -35%×35cm.

10. Use of the cotton, bamboo and wool blended yarn according to any one of claims 1 to 3 or the cotton, bamboo and wool blended yarn produced by the production method according to any one of claims 4 to 9 in the production of special military clothing fabrics and household textiles.

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