CN120520007A - A production process for yak wool/polylactic acid fiber/comfortable stretch yarn woven fabric - Google Patents

A production process for yak wool/polylactic acid fiber/comfortable stretch yarn woven fabric

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Publication number
CN120520007A
CN120520007A CN202510508453.3A CN202510508453A CN120520007A CN 120520007 A CN120520007 A CN 120520007A CN 202510508453 A CN202510508453 A CN 202510508453A CN 120520007 A CN120520007 A CN 120520007A
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CN
China
Prior art keywords
yarn
yakwool
elastic
fiber
adopting
Prior art date
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Pending
Application number
CN202510508453.3A
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Chinese (zh)
Inventor
黄立新
陆卫国
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Jiaxing University
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Jiaxing University
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Application filed by Jiaxing University filed Critical Jiaxing University
Priority to CN202510508453.3A priority Critical patent/CN120520007A/en
Publication of CN120520007A publication Critical patent/CN120520007A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
    • 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
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/233—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads protein-based, e.g. wool or silk
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics
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    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
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    • D06C7/00—Heating or cooling textile fabrics
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The invention discloses a production process of yakwool/polylactic acid fiber/elastic yarn woven fabric, which comprises the following steps of S1 warp yarn preparation, S2 weft yarn preparation, S3 warping, S4 sizing, S5 drafting, reed inserting and weaving, S6 desizing, S7 scouring, S8 pre-shaping, S9 soft finishing, S10 napping and shearing, and S11 shaping. The warp yarn is a yakwool/polylactic acid/PVA fiber blended yarn. The preparation method of the elastic yakwool covering yarn comprises the steps that the elastic yakwool covering yarn comprises a core yarn and a covering fiber layer, wherein the core yarn is polylactic acid elastic yarn blended yarn, and the covering fiber layer is yakwool fiber. The elastic yakwool covering yarn is adopted in the weft direction and is raised, so that the woven fabric has fluffiness, warmth retention and good hand feeling. The PVA fiber is used in the warp yarn, so that after sizing, water dissolution can be regarded as slurry penetration into the yarn, thereby improving sizing effect and enabling weaving to be smoother.

Description

Production process of yakwool/polylactic acid fiber/elastic yarn woven fabric
Technical Field
The invention relates to a production process of yakwool/polylactic acid fiber/elastic yarn woven fabric, and belongs to the technical field of woven fabric preparation.
Background
The yak wool fabric is a fabric made by weaving yarns containing raw materials of the yak wool. The yak is a special beef species of the Qinghai-Tibet plateau and the alpine grassland in the adjacent area of the Qinghai-Tibet plateau, is suitable for the altitude of 3200-4800M, can resist severe cold at minus 30-40 ℃, thick wool grows out under the ventral side of the chest in winter, the air temperature rises back to naturally fall off, the wool is picked once every year, people can manually pick up the yak to remove the hair from the yak in the beginning of about 5-6 months, the annual wool yield of adult yaks is 1.17-2.62 kg, the annual wool yield of young yaks is 1.30-1.35 kg, and the coarse wool and the wool respectively account for half. The yakwool is very thin, has the diameter of less than 20 micrometers, the length of 3.4-4.5 centimeters, has irregular bending, and the scales are in annular tight cohesion, and are soft in luster, strong in elasticity and smooth and glutinous in hand feeling. The growth environment of the yaks ensures that the wool has particularly good warm keeping performance, has cold resistance and fluffy hand feeling, and the strength of the yak wool fibers is 1.5 times greater than that of the cashmere, so that the yak wool fibers are superior to the cashmere in anti-pilling performance and the dimensional change after washing is also superior to that of the cashmere. The yak wool fabric is widely used in the field of clothing production in recent years, and has warmth retention property, comfortableness and wool fabric quality.
The elastic yarn is a functional fiber produced by DuPont in the United states, the elastic yarn fiber has good skin-friendly property, softness and elastic recovery, the elastic force is not as great as that of spandex yarn, but the elastic force is durable, strong acid and strong alkali resistance is realized, the elastic yarn fiber cannot be broken like the spandex yarn, the crease resistance and the shape retention are good, the surface of the elastic yarn fiber is not smooth with terylene, the cross section is not cylindrical, but is irregular polygonal, the cohesive force between the fibers is larger than that of terylene fiber, so the elastic yarn cannot be fluffed and pilled like terylene, the dyeing property of the elastic yarn is very good, the color of the fabric can be very beautiful, and therefore, many properties of the fiber are better than those of common terylene, but the air permeability and the moisture permeability of the fiber are poorer than those of terylene fiber. The elastic yarn can be blended with various fibers, and the blended yarn maintains the original excellent performance of the blend fibers, and simultaneously has good elasticity.
PLA fiber, polylactic acid fiber, uses lactic acid prepared from starch as raw material, and belongs to fiber with natural circulation completion and biodegradability. The fiber is light, smooth and smooth, has high strength, moisture absorption and ventilation, and the processed product has silk-like luster, comfortable skin touch and hand feeling, good drapability, good heat resistance, ultraviolet resistance and good wearability.
The yakwool/polylactic acid fiber/stretch yarn blended fabric has good skin touch on the premise of having elasticity and warmth retention, and how to prepare the fabric becomes a problem to be solved.
Disclosure of Invention
The invention aims to provide a production process of yakwool/polylactic acid fiber/elastic yarn woven fabric, and the woven fabric has warmth retention and elasticity.
In order to solve the technical problems, the aim of the invention is realized as follows:
The invention relates to a production process of yakwool/polylactic acid fiber/elastic yarn woven fabric, which comprises the following steps:
S1, preparing warp yarns, wherein the warp yarns are yakwool/polylactic acid/PVA fiber blended yarns;
s2, preparing weft yarns, wherein the weft yarns are elastic yakwool covering yarns, the elastic yakwool covering yarns comprise core yarns and covering fiber layers, the core yarns are polylactic acid elastic yarn blending yarns, and the covering fiber layers are yakwool fibers;
S3, warping, namely adopting a batch warping mode, controlling tension gradient, and controlling the front row to 15-20cN and the rear row to 25-30cN;
s4, sizing, namely sizing the sizing by adopting compound sizing agent, and drying, wherein the sizing rate is 5-6%, and the moisture regain is controlled to be 2.5-3.5%;
The compound slurry comprises 3-5wt% of caproate starch, 1-2wt% of polyvinyl alcohol 1799, 0.2-0.5wt% of softening agent, 0.1-0.2wt% of antistatic agent, 0.2-0.3wt% of 2-naphthol, 0.3-0.5wt% of wax flakes and the balance of water;
s5, weaving by adopting satin weave;
S6, desizing, namely desizing by adopting cellulase, and treating for 30-40min under the condition that the pH value is 6.5-7.0,50-55 ℃;
S7, refining, namely adopting 2-3g/L nonionic surfactant to treat for 20-30min at 75-80 ℃;
s8, presetting the temperature to be 95-100 ℃ and the time to be 45-60S;
S9, soft finishing, namely impregnating the fabric subjected to pre-shaping with a soft finishing agent, wherein the temperature of the soft finishing agent is 40-45 ℃, the impregnating time is 15-20min, the rolling surplus rate is 70-75%, the drying temperature is 110-115 ℃, and the time is 2-2.5min;
S10, napping and shearing, namely napping one side of the weft surface by a napping machine, wherein the speed difference of the reverse card clothing is 10-15%, and the shearing height is 1.2-1.5mm;
s11, shaping, wherein the shaping temperature is 110-115 ℃.
Based on the scheme, the preferable scheme of the scheme is that the length of the yakwool is more than or equal to 35mm, the fineness is less than or equal to 18 mu m, the polylactic acid fiber is short fiber with the length of 1.4dtex multiplied by 38mm, the water content is less than or equal to 0.05%, the elastic fiber is short fiber with the length of 0.9dtex multiplied by 38mm, the elastic recovery rate is more than or equal to 85%, the average molecular weight of raw materials of the PVA fiber is 60000-150000, the thermal decomposition temperature is 200-220 ℃, the melting point is 225-230 ℃, the fineness is 1.56D, and the length is 38mm.
On the basis of the scheme and as a preferable scheme of the scheme, the preparation of the yakwool/polylactic acid/PVA fiber blended yarn comprises the following steps:
s1-1, pretreatment of raw materials, including yakwool hair mixing treatment and PLA antistatic treatment;
The hair-mixing treatment of the yakwools refers to spraying of the yakwools and hair oil, and curing for 12-24 hours under the conditions of 25-30 ℃ and 65-70% relative humidity, wherein the hair-mixing oil contains an antistatic agent;
The antistatic treatment of PLA means that PLA fibers are uniformly sprayed with antistatic treatment liquid and dried at 45-50 ℃;
S1-2, mixing yakwool, PLA fiber and PVA fiber by adopting a tiling direct-taking method, pre-opening and finish-opening, pre-opening by adopting a corner nail roller opener, and finish-opening by adopting a carding beater opener;
s1-3, carding, namely carding into raw strips by adopting an LFN288 cashmere combined carding machine, wherein the speed of a cylinder is 300-350rpm, the linear speed ratio of doffer to the cylinder is 1:20-25, the linear speed ratio of a licker-in to the cylinder is 1:2.0-2.5, the gauge of doffer to the cylinder is 0.1-0.12mm, the gauge of licker-in to the cylinder is 0.15mm, and the ration of the raw strips is 16-20g/5m;
S1-4, drawing, namely adopting three drawing processes, including a first drawing process, a second drawing process and a last drawing process, wherein the number of the drawing processes is respectively 6, 8 and 8, and the total draft multiples are respectively 6.8, 7.2 and 7.8;
S1-5, controlling the relative humidity of the roving to be 65-75%, wherein the twist coefficient of the prepared roving is 380-400;
S1-6, spinning yarn, namely adopting a ring spinning production process, wherein the spindle speed is 10000-12000rpm, selecting PG14054 ring, the twist is 750-800 twists/m, the back zone draft is 1.15-1.20 times, and additionally arranging a collector, the width is 3-5mm, the jaw gauge is 2.5-3mm, and the hardness of a rubber roller is Shore 78 DEG;
s1-7, steam shaping, namely vacuum steam shaping, wherein the temperature is 105-110 ℃ and the time is 20-30min.
On the basis of the scheme and as a preferable scheme of the scheme, the preparation of the yakwool elastic core-spun yarn comprises the following steps:
s2-1, raw material pretreatment, including yakwool wool mixing treatment and PLA and elastic silk stretching antistatic treatment;
The hair-mixing treatment of the yakwool comprises spraying and mixing oil of the yakwool, and preserving for 12-24 hours under the conditions of 25-30 ℃ and 65-70% relative humidity, wherein the antistatic agent is contained in the hair-mixing oil, the antistatic treatment of the elastic yarn is the addition of the antistatic agent and a silicone oil-based lubricant when the elastic yarn filaments are cut off, and the antistatic treatment of the PLA comprises the steps of uniformly spraying antistatic treatment liquid on the PLA fibers and drying under the conditions of 45-50 ℃;
S2-2, opening and picking, namely opening and picking PLA fibers and elastic yarns by adopting a multi-bin cotton mixer and a fine cotton opener, wherein the speed of a beater is 150-200rpm, the gauge of a dust rod is 8-10mm, the quantitative amount of cotton rolls is 380-400g/m, the temperature in a workshop is 25 ℃ plus or minus 2 ℃, and the relative humidity is 65% plusor minus 5%;
S2-3, carding, namely carding the mixed PLA fibers and the elastic silk fibers by adopting a carding machine, wherein the speed of a cylinder is 330-360rpm, the speed of a licker-in is 350-700rpm, the sliver outlet speed is 80-100m/min, and the sliver quantification is 18-20g/5m;
the gauge between the licker-in and the cotton feeding plate is 0.15-0.20mm, the gauge between the licker-in and the cylinder is 0.10-0.15mm, the gauge between the cylinder Lin Yudao and the cover plate is 0.08-0.12mm, the gauge between the cylinder and the cover plate at the inlet is 0.18-0.25mm, and the gauge between the cylinder and the cover plate at the outlet is 0.12-0.18mm;
S2-4 drawing, wherein three drawing steps comprise a first drawing, a second drawing and a last drawing, the number of the drawing steps is respectively 6, 8 and 8, the total draft multiples are respectively 6.5, 7.5 and 7.8, and the quantitative drawing amount is 3-3.5g/5m;
S2-5, roving, wherein the spindle speed is 800rpm, the twist coefficient is 380, and the axial winding density is 3.2 circles/cm;
S2-6, spinning, namely, spindle speed is 12000rpm, twist is 850 turns/m, Z turns, steel wire ring #6802, back zone draft is 1.25 times, jaw gauge is 2.5mm, and PLA/stretch yarn blend yarn is prepared and used as core yarn;
S2-7, preparing yakwool strips, namely preparing the yakwool strips from the yakwools subjected to the sum by adopting a wool type comber, wherein the ration is 12-15g/m, and a collector is additionally arranged in a drafting zone, and the width is 6mm;
S2-8, preparing the yak wool elastic core spun yarn by adopting a PLA/elastic yarn blend yarn and a yak wool strip through a hollow spindle fancy twisting machine, wherein the feeding speed of the core yarn is 15m/min, the feeding amount of the yak wool strip is 0.8-1.2g/m, the rotating speed of the hollow spindle is 8000-10000rpm, the yak wool strip is coated on the outer side of the PLA/elastic yarn along the S direction, the overfeeding rate of the core yarn and the coated fiber is 1:1.25, the winding tension is 12-15cN, and the winding density is 0.3-0.35g/cm < 3 >;
S2-9, steam shaping, namely steam shaping by saturated steam, wherein the temperature is 105-110 ℃ and the time is 25-35min.
Based on the scheme, the preferable scheme of the scheme is that the needle tooth density on the metal card clothing used by the cylinder in the carding machine used in the step S2-2 is 460-500Points/inch 2, the card clothing comprises a base part and needle teeth, the hardness of the tooth tip is equal to or more than 780HV, the tooth tip comprises a first arc-shaped section, a straight section and a second arc-shaped section, the radius of the first arc-shaped section is 0.05mm, the radius of the second arc-shaped section is 0.1mm, the included angle of the front tooth surface is 55-60 degrees, and the included angle of the rear tooth surface is 30-35 degrees;
The doffer card clothing uses a tip of a olecranon-shaped tooth and has a negative rake angle of-5 DEG to-8 deg.
Based on the scheme, the method and the preferable scheme of the scheme are that the sum Mao Youbao comprises amino-terminated hyperbranched compound quaternary ammonium salt, cross-linked hyperbranched waterborne polyurethane acrylate, turkey red oil, fatty alcohol polyvinyl ether sodium sulfate, soybean oil fatty acid methyl ester, stearyl alcohol phosphate, hydroxyl modified amino silicone oil and deionized water.
The production process has the beneficial effects that the yakwool/polylactic acid fiber/elastic yarn woven fabric production process has the advantages that yakwool elastic core spun yarns are adopted in the weft direction and napped, so that the woven fabric has fluffiness and warmth retention property and good hand feeling. The PVA fiber is used in the warp yarn, so that after sizing, water dissolution can be regarded as slurry penetration into the yarn, thereby improving sizing effect and enabling weaving to be smoother.
Drawings
FIG. 1 is a flow chart of a production process of yakwool/polylactic acid fiber/elastic yarn woven fabric according to the invention;
FIG. 2 is a schematic view of the structure of the teeth on the metallic card clothing used by the cylinder in the carding machine for elastic covering yarn of yakwool according to the invention;
Fig. 3 is a partial enlarged view at a in fig. 2.
The labels are shown as 1-base cloth, 2-needle teeth, 21-first arcuate segment, 22-straight segment, 23-second arcuate segment, 24-front tooth face, 25-rear tooth face.
Detailed Description
The invention will be further described with reference to the drawings and specific examples.
Example 1
The present embodiment will be described in detail with reference to fig. 1, 2 and 3. The invention relates to a production process of yakwool/polylactic acid fiber/elastic yarn woven fabric, which comprises the following steps of S1 warp yarn preparation, S2 weft yarn preparation, S3 warping, S4 sizing, S5 drafting, reed inserting and weaving, S6 desizing, S7 scouring, S8 pre-shaping, S9 soft finishing, S10 napping and shearing, and S11 shaping.
In the step S1 of preparing the warp yarn, the warp yarn is a yakwool/polylactic acid/PVA fiber blended yarn.
Further, the preparation of the yakwool/polylactic acid/PVA fiber blended yarn comprises the following steps:
S1-1 raw material pretreatment, namely, wool mixing treatment of yakwool and antistatic treatment of PLA, wherein the length of the yakwool is more than or equal to 35mm, the fineness is less than or equal to 18 mu m, the polylactic acid fiber is short fiber with the length of 1.4dtex multiplied by 38mm, the water content is less than or equal to 0.05%, the average molecular weight of the raw material of the PVA fiber is 60000-150000, the thermal decomposition temperature is 200-220 ℃, the melting point is 225-230 ℃, the fineness is 1.56D, and the length is 38mm.
The hair-mixing treatment of the yakwool is that the yakwool is sprayed with hair-mixing oil, and the yakwool is preserved for 12 hours under the conditions of 30 ℃ and 65% relative humidity, and the hair-mixing oil contains an antistatic agent. The amount of the crude oil is 2% of the weight of the yakwool. The antistatic treatment of PLA means that PLA fibers are uniformly sprayed with the antistatic treatment and dried at the temperature of 45 ℃ and the water content is controlled to be 0.1-0.3%. The amount of antistatic treatment liquid was 3% by weight of PLA fiber.
Further, the sum Mao Youbao comprises amino-terminated hyperbranched compound quaternary ammonium salt, cross-linked hyperbranched waterborne polyurethane acrylate, turkey oil, fatty alcohol polyvinyl ether sodium sulfate, soybean oil fatty acid methyl ester, stearyl alcohol phosphate and deionized water.
Further, the sum Mao Youbao comprises 8 parts by mass of amino-terminated hyperbranched compound quaternary ammonium salt, 12 parts by mass of cross-linked hyperbranched waterborne polyurethane acrylate, 5 parts by mass of Turkey oil, 5 parts by mass of fatty alcohol polyvinyl ether sodium sulfate, 15 soybean oil fatty acid methyl ester, 3 parts by mass of stearyl alcohol phosphate, 5 parts by mass of hydroxyl modified amino silicone oil and 100 parts by mass of deionized water.
The antistatic treatment liquid used in antistatic treatment of PLA includes 5wt% of sodium dodecyl sulfate, 3wt% of sodium dodecyl benzene sulfonate and the balance of water.
S1-2, mixing and opening, namely mixing yakwool, PLA fibers and PVA fibers by adopting a tiling direct taking method, pre-opening and finish opening, pre-opening by adopting a corner nail roller opener, and finish opening by adopting a carding beater opener.
S1-3, carding, namely carding into raw strips by adopting an LFN288 cashmere combined carding machine, wherein the speed of a cylinder is 300rpm, the linear speed ratio of doffer to the cylinder is 1:25, the linear speed ratio of a licker-in to the cylinder is 1:2.5, the gauge of the doffer to the cylinder is 0.1-0.12mm, the gauge of the licker-in to the cylinder is 0.15mm, and the ration of the raw strips is 18.2g/5m. Since PLA fibers are easy to accumulate static electricity to cause the broken edges of the cotton web, an ion air bar is additionally arranged above the cotton web in the carding machine, and the distance between the ion air bar and the cotton web is 10cm.
S1-4, drawing, namely adopting three drawing processes, including a first drawing process, a second drawing process and a last drawing process, wherein the number of the drawing processes is respectively 6, 8 and 8, and the total draft multiples are respectively 6.8, 7.2 and 7.8. The PLA fiber is easy to generate static electricity during friction, so that a metal bar guider is adopted during final combination, and the influence of static electricity on the quality of cooked bars can be reduced.
S1-5, controlling the relative humidity of the roving to 75%, wherein the twist factor of the prepared roving is 400.
S1-6, spinning yarn, namely adopting a ring spinning production process, wherein the spindle speed is 10000rpm, selecting PG14054 ring, the twist degree is 750 twists/m, the back zone draft is 1.15 times, the width is 3mm, the jaw gauge is 2.5mm, the hardness of the used rubber roller is Shore 78 degrees, and the false twister is additionally arranged on the front roller, and the false twist number is 1200 twists/m.
S1-7, steam shaping, namely vacuum steam shaping, wherein the temperature is 110 ℃ and the time is 200min.
In the step S2 of preparing the weft yarn, the weft yarn is a yakwool elastic core spun yarn, wherein the yakwool elastic core spun yarn comprises a core yarn and a coating fiber layer, the core yarn is a polylactic acid elastic yarn blend yarn, and the coating fiber layer is yakwool fiber.
Further, the preparation of the yakwool elastic core-spun yarn comprises the following steps:
S2-1, raw material pretreatment, including wool mixing treatment of yakwool and antistatic treatment of PLA and elastic yarn, wherein the length of the yakwool is more than or equal to 35mm, the fineness is less than or equal to 18 mu m, the polylactic acid fiber is a short fiber with the length of 1.4dtex multiplied by 38mm, the water content is less than or equal to 0.05%, and the elastic yarn is a short fiber with the length of 0.9dtex multiplied by 38mm, and the elastic recovery rate is more than or equal to 85%.
The hair-mixing treatment of the yakwool comprises spraying and mixing oil of the yakwool, and preserving for 12 hours under the conditions of 30 ℃ and 65% relative humidity, wherein the hair-mixing oil contains an antistatic agent, the antistatic treatment of the elastic yarn is to add the antistatic agent and a silicone oil-based lubricant when the elastic yarn filament is cut off, and the antistatic treatment of the PLA comprises uniformly spraying an antistatic treatment liquid on the PLA fiber and drying under the condition of 45 ℃. Antistatic treatment of PLA is the same as in step S1-1.
S2-2, opening and picking, namely opening and picking PLA fibers and elastic yarns by adopting a multi-bin cotton mixer and a fine cotton opener, wherein the speed of a beater is 200rpm, the gauge of a dust rod is 10mm, the quantitative rate of a cotton roll is 380g/m, the temperature in a workshop is 25 ℃ plus or minus 2 ℃, and the relative humidity is 65% plusor minus 5%.
S2-3, carding, namely carding the mixed PLA fibers and the elastic silk fibers by adopting a carding machine, wherein the speed of a cylinder is 330rpm, the speed of a licker-in is 350rpm, the sliver outlet speed is 80m/min, and the sliver yield is 18g/5m. In order to solve the problem that the static electricity of PLA can cause broken edges, an ion air bar is additionally arranged above the cotton net in the carding machine, and the distance between the ion air bar and the cotton net is 10cm.
The distance between the licker-in and the cotton feeding plate is 0.15mm, the distance between the licker-in and the cylinder is 0.10mm, the distance between the cylinder Lin Yudao f is 0.08mm, the distance between the cylinder and the cover plate at the inlet is 0.18mm, and the distance between the cylinder and the cover plate at the outlet is 0.12mm.
S2-4 drawing, wherein three drawing steps comprise a first drawing, a second drawing and a last drawing, the number of the drawing steps is 6, 8 and 8 respectively, the total draft multiples are 6.5, 7.5 and 7.8 respectively, and the quantitative drawing amount is 3-3.5g/5m.
S2-5, roving, wherein the spindle speed is 800rpm, the twist coefficient is 380, and the axial winding density is 3.2 circles/cm.
S2-6, spinning yarn, namely spindle speed is 12000rpm, twist is 850 turns/m, Z turns, steel wire ring #6802, back zone draft is 1.25 times, jaw gauge is 2.5mm, and PLA/textured yarn blended yarn is prepared and used as core yarn.
S2-7, preparing the yakwool strips by adopting a wool comber to prepare the yakwool strips subjected to wool mixing, wherein the ration is 12-15g/m, and a collector is additionally arranged in a drafting zone, and the width is 6mm.
S2-8, preparing the yak wool elastic core spun yarn by adopting a PLA/elastic yarn blend yarn and a yak wool strip through a hollow spindle fancy twisting machine, wherein the feeding speed of the core yarn is 15m/min, the feeding amount of the yak wool strip is 0.8g/m, the rotating speed of the hollow spindle is 8000rpm, the yak wool strip is coated on the outer side of the PLA/elastic yarn along the S direction, the overfeeding rate of the core yarn and the coated fiber is 1:1.25, the winding tension is 12-15cN, and the winding density is 0.3g/cm < 3 >.
S2-9, steam shaping, namely steam shaping by saturated steam, wherein the temperature is 110 ℃ and the time is 25min.
In step S3 warping, a batch warping mode is adopted, tension gradient control is adopted, the front row is 15cN, and the rear row is 25cN;
In the step S4 sizing, sizing is sized and dried by adopting compound sizing, the sizing rate is 5%, the moisture regain is controlled to be 3.5%, and the compound sizing comprises 3wt% of caproate starch, 2wt% of polyvinyl alcohol 1799, 0.2wt% of softening agent, 0.2wt% of antistatic agent, 0.2wt% of 2-naphthol, 0.5wt% of wax flakes and the balance of water. Because the PVA fibers are contained in the warp yarns, when the warp yarns are soaked and dried by sizing agent, the PVA fibers are dissolved in water, so that the interior of the warp yarns can be adhered, and the problem that sizing agent is difficult to permeate into the interior of the warp yarns is solved.
In step S5, the draw reed and weaving are performed using a satin weave. The satin weave can improve the softness of the fabric, and particularly adopts 8 satins.
In step S6 desizing, cellulase is adopted for desizing, and the treatment is carried out for 40min under the condition that the pH value is 7.0,50 ℃.
In the step S7 refining, 2g/L of nonionic surfactant is used for 20min at 80 ℃.
In the pre-shaping of step S8, the temperature is 100 ℃ and the time is 45S.
In the step S9 of softening finishing, the fabric subjected to pre-shaping is immersed in a soft finishing agent, wherein the temperature of the soft finishing agent is 40 ℃, the immersing time is 20min, the rolling surplus rate is 70%, the drying temperature is 115 ℃, and the time is 2min. The softening finishing agent is amino silicone oil.
In the step S10 of napping and shearing, a napping machine is adopted to nap one side of the weft surface, the speed difference of the reverse card clothing is 10-15%, the shearing height is 1.2-1.5mm, and the nap height is 1.2mm.
In the shaping in the step S11, the shaping temperature is 110-115 ℃.
Further, the density of needle teeth on a metal card clothing used for a cylinder in the carding machine used in the step S2-2 is 460-500Points/inch 2, the card clothing comprises a base part and needle teeth, the hardness of tooth tips is equal to or more than 780HV, the tooth tips comprise a first arc-shaped section, a straight section and a second arc-shaped section, the radius of the first arc-shaped section is 0.05mm, and the radius of the second arc-shaped section is 0.1mm. The doffer card clothing has less damage to fiber, front tooth surface angle of 60 deg and back tooth surface angle of 35 deg, and has one olecranon-8 deg negative front angle.
Example two
The present embodiment will be described in detail. The invention relates to a production process of yakwool/polylactic acid fiber/elastic yarn woven fabric, which comprises the following steps of S1 warp yarn preparation, S2 weft yarn preparation, S3 warping, S4 sizing, S5 drafting, reed inserting and weaving, S6 desizing, S7 scouring, S8 pre-shaping, S9 soft finishing, S10 napping and shearing, and S11 shaping.
In the step S1 of preparing the warp yarn, the warp yarn is a yakwool/polylactic acid/PVA fiber blended yarn.
Further, the preparation of the yakwool/polylactic acid/PVA fiber blended yarn comprises the following steps:
S1-1 raw material pretreatment, namely, wool mixing treatment of yakwool and antistatic treatment of PLA, wherein the length of the yakwool is more than or equal to 35mm, the fineness is less than or equal to 18 mu m, the polylactic acid fiber is short fiber with the length of 1.4dtex multiplied by 38mm, the water content is less than or equal to 0.05%, the average molecular weight of the raw material of the PVA fiber is 60000-150000, the thermal decomposition temperature is 200-220 ℃, the melting point is 225-230 ℃, the fineness is 1.56D, and the length is 38mm.
The hair-mixing treatment of the yakwool is to spray the yakwool with hair-mixing oil, and keep the yakwool for 24 hours under the conditions of 25 ℃ and 70% relative humidity, wherein the hair-mixing oil contains an antistatic agent. The amount of the crude oil is 2% of the weight of the yakwool. The antistatic treatment of PLA means that PLA fibers are uniformly sprayed with the antistatic treatment and dried at 50 ℃ with the water content controlled between 0.1 and 0.3 percent. The amount of antistatic treatment liquid was 3% by weight of PLA fiber.
Further, the sum Mao Youbao comprises amino-terminated hyperbranched compound quaternary ammonium salt, cross-linked hyperbranched waterborne polyurethane acrylate, turkey oil, fatty alcohol polyvinyl ether sodium sulfate, soybean oil fatty acid methyl ester, stearyl alcohol phosphate and deionized water.
Further, the sum Mao Youbao comprises 5 parts by mass of amino-terminated hyperbranched compound quaternary ammonium salt, 10 parts by mass of cross-linked hyperbranched waterborne polyurethane acrylate, 8 parts by mass of Turkey oil, 3 parts by mass of fatty alcohol polyvinyl ether sodium sulfate, 10 soybean oil fatty acid methyl ester, 5 parts by mass of stearyl alcohol phosphate, 8 parts by mass of hydroxyl modified amino silicone oil and 100 parts by mass of deionized water.
The antistatic treatment liquid used in antistatic treatment of PLA includes 8wt% of sodium dodecyl sulfate, 1wt% of sodium dodecyl benzene sulfonate and the balance of water.
S1-2, mixing and opening, namely mixing yakwool, PLA fibers and PVA fibers by adopting a tiling direct taking method, pre-opening and finish opening, pre-opening by adopting a corner nail roller opener, and finish opening by adopting a carding beater opener.
S1-3, carding, namely carding into raw strips by adopting an LFN288 cashmere combined carding machine, wherein the speed of a cylinder is 350rpm, the linear speed ratio of doffer to the cylinder is 1:20, the linear speed ratio of a licker-in to the cylinder is 1:2.5, the gauge of the doffer to the cylinder is 0.1-0.12mm, the gauge of the licker-in to the cylinder is 0.15mm, and the ration of the raw strips is 18.2g/5m. Since PLA fibers are easy to accumulate static electricity to cause the broken edges of the cotton web, an ion air bar is additionally arranged above the cotton web in the carding machine, and the distance between the ion air bar and the cotton web is 10cm.
S1-4, drawing, namely adopting three drawing processes, including a first drawing process, a second drawing process and a last drawing process, wherein the number of the drawing processes is respectively 6, 8 and 8, and the total draft multiples are respectively 6.8, 7.2 and 7.8. The PLA fiber is easy to generate static electricity during friction, so that a metal bar guider is adopted during final combination, and the influence of static electricity on the quality of cooked bars can be reduced.
S1-5, controlling the relative humidity of the roving to 65%, wherein the twist factor of the prepared roving is 380.
S1-6, spinning yarn, namely adopting a ring spinning production process, wherein the spindle speed is 12000rpm, selecting PG14054 ring, the twist degree is 800 twists/m, the back zone draft is 1.20 times, the width is 5mm, the jaw gauge is 3mm, the hardness of the used rubber roller is Shore 78 degrees, and the false twister is additionally arranged on the front roller, wherein the false twist number is 1200 twists/m.
S1-7, steam shaping, namely vacuum steam shaping, wherein the temperature is 105 ℃ and the time is 30min.
In the step S2 of preparing the weft yarn, the weft yarn is a yakwool elastic core spun yarn, wherein the yakwool elastic core spun yarn comprises a core yarn and a coating fiber layer, the core yarn is a polylactic acid elastic yarn blend yarn, and the coating fiber layer is yakwool fiber.
Further, the preparation of the yakwool elastic core-spun yarn comprises the following steps:
S2-1, raw material pretreatment, including wool mixing treatment of yakwool and antistatic treatment of PLA and elastic yarn, wherein the length of the yakwool is more than or equal to 35mm, the fineness is less than or equal to 18 mu m, the polylactic acid fiber is a short fiber with the length of 1.4dtex multiplied by 38mm, the water content is less than or equal to 0.05%, and the elastic yarn is a short fiber with the length of 0.9dtex multiplied by 38mm, and the elastic recovery rate is more than or equal to 85%.
The hair-mixing treatment of the yakwool comprises spraying and mixing oil of the yakwool, and preserving for 24 hours under the conditions of 25 ℃ and 70% relative humidity, wherein the hair-mixing oil contains an antistatic agent, the antistatic treatment of the elastic yarn is to add the antistatic agent and a silicone oil-based lubricant when the elastic yarn filament is cut off, and the antistatic treatment of the PLA comprises uniformly spraying an antistatic treatment liquid on the PLA fiber and drying under the condition of 50 ℃. Antistatic treatment of PLA is the same as in step S1-1.
S2-2, opening and picking, namely opening and picking PLA fibers and elastic yarns by adopting a multi-bin cotton mixer and a fine cotton opener, wherein the speed of a beater is 150rpm, the gauge of a dust rod is 8mm, the quantitative rate of a cotton roll is 400g/m, the temperature in a workshop is 25 ℃ plus or minus 2 ℃, and the relative humidity is 65% plusor minus 5%.
S2-3, carding, namely carding the mixed PLA fibers and the elastic silk fibers by adopting a carding machine, wherein the speed of a cylinder is 360rpm, the speed of a licker-in is 700rpm, the sliver outlet speed is 100m/min, and the sliver yield is 20g/5m. In order to solve the problem that the static electricity of PLA can cause broken edges, an ion air bar is additionally arranged above the cotton net in the carding machine, and the distance between the ion air bar and the cotton net is 10cm.
The distance between the licker-in and the cotton feeding plate is 0.20mm, the distance between the licker-in and the cylinder is 0.15mm, the distance between the cylinder Lin Yudao f is 0.12mm, the distance between the cylinder and the cover plate at the inlet is 0.25mm, and the distance between the cylinder and the cover plate at the outlet is 0.18mm.
S2-4 drawing, wherein three drawing steps comprise a first drawing, a second drawing and a last drawing, the number of the drawing steps is 6, 8 and 8 respectively, the total draft multiples are 6.5, 7.5 and 7.8 respectively, and the quantitative drawing amount is 3-3.5g/5m.
S2-5, roving, wherein the spindle speed is 800rpm, the twist coefficient is 380, and the axial winding density is 3.2 circles/cm.
S2-6, spinning yarn, namely spindle speed is 12000rpm, twist is 850 turns/m, Z turns, steel wire ring #6802, back zone draft is 1.25 times, jaw gauge is 2.5mm, and PLA/textured yarn blended yarn is prepared and used as core yarn.
S2-7, preparing the yakwool strips by adopting a wool comber to prepare the yakwool strips subjected to wool mixing, wherein the ration is 12-15g/m, and a collector is additionally arranged in a drafting zone, and the width is 6mm.
S2-8, preparing the yak wool elastic core spun yarn by adopting a PLA/elastic yarn blend and a yak wool strip through a hollow spindle fancy twisting machine, wherein the feeding speed of the core yarn is 15m/min, the feeding amount of the yak wool strip is 1.2g/m, the rotating speed of the hollow spindle is 10000rpm, the yak wool strip is coated on the outer side of the PLA/elastic yarn along the S direction, the overfeeding rate of the core yarn and the coated fiber is 1:1.25, the winding tension is 15cN, and the winding density is 0.35g/cm < 3 >.
S2-9, steam shaping, namely steam shaping by saturated steam, wherein the temperature is 105 ℃ and the time is 35min.
In step S3 warping, a batch warping mode is adopted, tension gradient control is adopted, the front row is 20cN, and the rear row is 30cN;
In the step S4 sizing, sizing is sized and dried by adopting compound sizing, the sizing rate is 6%, the moisture regain is controlled to be 2.5%, and the compound sizing comprises 5wt% of caproate starch, 1wt% of polyvinyl alcohol 1799, 0.5wt% of softening agent, 0.1wt% of antistatic agent, 0.3wt% of 2-naphthol, 0.3wt% of wax flakes and the balance of water. Because the PVA fibers are contained in the warp yarns, when the warp yarns are soaked and dried by sizing agent, the PVA fibers are dissolved in water, so that the interior of the warp yarns can be adhered, and the problem that sizing agent is difficult to permeate into the interior of the warp yarns is solved. Compared with the direct sizing of 8% without PVA fiber, the broken end rate is reduced by about 35%.
In step S5, the draw reed and weaving are performed using a satin weave. The satin weave can improve the softness of the fabric, and particularly adopts 8 satins.
In step S6 desizing, cellulase is adopted for desizing, and the treatment is carried out for 30min under the condition that the pH value is 6.5,55 ℃.
In the step S7 refining, 3g/L of nonionic surfactant was used for 30min at 75 ℃.
In the step S8, the pre-shaping is performed at a temperature of 95℃for a time of 60S.
In the step S9 of softening finishing, the fabric subjected to pre-shaping is immersed in a soft finishing agent, wherein the temperature of the soft finishing agent is 45 ℃, the immersing time is 15min, the rolling surplus rate is 75%, the drying temperature is 110 ℃, and the time is 2.5min. The softening finishing agent is amino silicone oil.
In the step S10 of napping and shearing, a napping machine is adopted to nap one side of the weft surface, the speed difference of the reverse card clothing is 10-15%, the shearing height is 1.2-1.5mm, and the nap height is 1.2mm.
In the shaping in the step S11, the shaping temperature is 110-115 ℃.
Further, the card clothing used in the step S2-2 is provided with a needle tooth density of 460-500Points/inch 2, the card clothing comprises a base part and needle teeth, the hardness of the needle teeth is equal to or more than 780HV, the needle teeth comprise a first arc-shaped section, a straight section and a second arc-shaped section, the radius of the first arc-shaped section is 0.05mm, the radius of the second arc-shaped section is 0.1mm, the included angle of the front tooth surface is 55 degrees, the included angle of the rear tooth surface is 30 degrees, and the doffer card clothing is provided with a olecranon-shaped needle teeth and has a negative front angle of-5 degrees.
The woven fabrics prepared in examples one and two were tested for thermal conductivity with a grammage of 285 grams per square meter. The test results were 0.058 and 0.062W/(m.k), respectively, and the heat insulation was superior to that of the heat conduction system 0.087W/(m.k) of pure wool with a gram weight of 285 g.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (6)

1. The production process of the yakwool/polylactic acid fiber/elastic yarn woven fabric is characterized by comprising the following steps of:
S1, preparing warp yarns, wherein the warp yarns are yakwool/polylactic acid/PVA fiber blended yarns;
s2, preparing weft yarns, wherein the weft yarns are elastic yakwool covering yarns, the elastic yakwool covering yarns comprise core yarns and covering fiber layers, the core yarns are polylactic acid elastic yarn blending yarns, and the covering fiber layers are yakwool fibers;
S3, warping, namely adopting a batch warping mode, controlling tension gradient, and controlling the front row to 15-20cN and the rear row to 25-30cN;
s4, sizing, namely sizing the sizing by adopting compound sizing agent, and drying, wherein the sizing rate is 5-6%, and the moisture regain is controlled to be 2.5-3.5%;
The compound slurry comprises 3-5wt% of caproate starch, 1-2wt% of polyvinyl alcohol 1799, 0.2-0.5wt% of softening agent, 0.1-0.2wt% of antistatic agent, 0.2-0.3wt% of 2-naphthol, 0.3-0.5wt% of wax flakes and the balance of water;
s5, weaving by adopting satin weave;
S6, desizing, namely desizing by adopting cellulase, and treating for 30-40min under the condition that the pH value is 6.5-7.0,50-55 ℃;
S7, refining, namely adopting 2-3g/L nonionic surfactant to treat for 20-30min at 75-80 ℃;
s8, presetting the temperature to be 95-100 ℃ and the time to be 45-60S;
S9, soft finishing, namely impregnating the fabric subjected to pre-shaping with a soft finishing agent, wherein the temperature of the soft finishing agent is 40-45 ℃, the impregnating time is 15-20min, the rolling surplus rate is 70-75%, the drying temperature is 110-115 ℃, and the time is 2-2.5min;
S10, napping and shearing, namely napping one side of the weft surface by a napping machine, wherein the speed difference of the reverse card clothing is 10-15%, and the shearing height is 1.2-1.5mm;
s11, shaping, wherein the shaping temperature is 110-115 ℃.
2. The production process of the yakwool/polylactic acid fiber/elastic yarn woven fabric is characterized in that the length of the yakwool is more than or equal to 35mm, the fineness is less than or equal to 18 mu m, the polylactic acid fiber is short fiber with the length of 1.4dtex multiplied by 38mm, the water content is less than or equal to 0.05%, the elastic yarn is short fiber with the length of 0.9dtex multiplied by 38mm, the elastic recovery rate is more than or equal to 85%, the average molecular weight of raw materials of the PVA fiber is 60000-150000, the thermal decomposition temperature is 200-220 ℃, the melting point is 225-230 ℃, the fineness is 1.56D, and the length is 38mm.
3. The process for producing the yakwool/polylactic acid fiber/elastic yarn woven fabric according to claim 2, wherein the preparation of the yakwool/polylactic acid/PVA fiber blended yarn comprises the following steps:
s1-1, pretreatment of raw materials, including yakwool hair mixing treatment and PLA antistatic treatment;
The hair-mixing treatment of the yakwools refers to spraying of the yakwools and hair oil, and curing for 12-24 hours under the conditions of 25-30 ℃ and 65-70% relative humidity, wherein the hair-mixing oil contains an antistatic agent;
The antistatic treatment of PLA means that PLA fibers are uniformly sprayed with antistatic treatment liquid and dried at 45-50 ℃;
S1-2, mixing yakwool, PLA fiber and PVA fiber by adopting a tiling direct-taking method, pre-opening and finish-opening, pre-opening by adopting a corner nail roller opener, and finish-opening by adopting a carding beater opener;
s1-3, carding, namely carding into raw strips by adopting an LFN288 cashmere combined carding machine, wherein the speed of a cylinder is 300-350rpm, the linear speed ratio of doffer to the cylinder is 1:20-25, the linear speed ratio of a licker-in to the cylinder is 1:2.0-2.5, the gauge of doffer to the cylinder is 0.1-0.12mm, the gauge of licker-in to the cylinder is 0.15mm, and the ration of the raw strips is 16-20g/5m;
S1-4, drawing, namely adopting three drawing processes, including a first drawing process, a second drawing process and a last drawing process, wherein the number of the drawing processes is respectively 6, 8 and 8, and the total draft multiples are respectively 6.8, 7.2 and 7.8;
S1-5, controlling the relative humidity of the roving to be 65-75%, wherein the twist coefficient of the prepared roving is 380-400;
S1-6, spinning yarn, namely adopting a ring spinning production process, wherein the spindle speed is 10000-12000rpm, selecting PG14054 ring, the twist is 750-800 twists/m, the back zone draft is 1.15-1.20 times, and additionally arranging a collector, the width is 3-5mm, the jaw gauge is 2.5-3mm, and the hardness of a rubber roller is Shore 78 DEG;
s1-7, steam shaping, namely vacuum steam shaping, wherein the temperature is 105-110 ℃ and the time is 20-30min.
4. The process for producing the yakwool/polylactic acid fiber/elastic yarn woven fabric according to claim 2, wherein the preparation of the yakwool elastic core-spun yarn comprises the following steps:
s2-1, raw material pretreatment, including yakwool wool mixing treatment and PLA and elastic silk stretching antistatic treatment;
The hair-mixing treatment of the yakwool comprises spraying and mixing oil of the yakwool, and preserving for 12-24 hours under the conditions of 25-30 ℃ and 65-70% relative humidity, wherein the antistatic agent is contained in the hair-mixing oil, the antistatic treatment of the elastic yarn is the addition of the antistatic agent and a silicone oil-based lubricant when the elastic yarn filaments are cut off, and the antistatic treatment of the PLA comprises the steps of uniformly spraying antistatic treatment liquid on the PLA fibers and drying under the conditions of 45-50 ℃;
S2-2, opening and picking, namely opening and picking PLA fibers and elastic yarns by adopting a multi-bin cotton mixer and a fine cotton opener, wherein the speed of a beater is 150-200rpm, the gauge of a dust rod is 8-10mm, the quantitative amount of cotton rolls is 380-400g/m, the temperature in a workshop is 25 ℃ plus or minus 2 ℃, and the relative humidity is 65% plusor minus 5%;
S2-3, carding, namely carding the mixed PLA fibers and the elastic silk fibers by adopting a carding machine, wherein the speed of a cylinder is 330-360rpm, the speed of a licker-in is 350-700rpm, the sliver outlet speed is 80-100m/min, and the sliver quantification is 18-20g/5m;
the gauge between the licker-in and the cotton feeding plate is 0.15-0.20mm, the gauge between the licker-in and the cylinder is 0.10-0.15mm, the gauge between the cylinder Lin Yudao and the cover plate is 0.08-0.12mm, the gauge between the cylinder and the cover plate at the inlet is 0.18-0.25mm, and the gauge between the cylinder and the cover plate at the outlet is 0.12-0.18mm;
S2-4 drawing, wherein three drawing steps comprise a first drawing, a second drawing and a last drawing, the number of the drawing steps is respectively 6, 8 and 8, the total draft multiples are respectively 6.5, 7.5 and 7.8, and the quantitative drawing amount is 3-3.5g/5m;
S2-5, roving, wherein the spindle speed is 800rpm, the twist coefficient is 380, and the axial winding density is 3.2 circles/cm;
S2-6, spinning, namely, spindle speed is 12000rpm, twist is 850 turns/m, Z turns, steel wire ring #6802, back zone draft is 1.25 times, jaw gauge is 2.5mm, and PLA/stretch yarn blend yarn is prepared and used as core yarn;
S2-7, preparing yakwool strips, namely preparing the yakwool strips from the yakwools subjected to the sum by adopting a wool type comber, wherein the ration is 12-15g/m, and a collector is additionally arranged in a drafting zone, and the width is 6mm;
S2-8, preparing the yak wool elastic core spun yarn by adopting a PLA/elastic yarn blend yarn and a yak wool strip through a hollow spindle fancy twisting machine, wherein the feeding speed of the core yarn is 15m/min, the feeding amount of the yak wool strip is 0.8-1.2g/m, the rotating speed of the hollow spindle is 8000-10000rpm, the yak wool strip is coated on the outer side of the PLA/elastic yarn along the S direction, the overfeeding rate of the core yarn and the coated fiber is 1:1.25, the winding tension is 12-15cN, and the winding density is 0.3-0.35g/cm < 3 >;
S2-9, steam shaping, namely steam shaping by saturated steam, wherein the temperature is 105-110 ℃ and the time is 25-35min.
5. The production process of the yak wool/polylactic acid fiber/elastic yarn woven fabric according to claim 4, wherein the density of needle teeth on a metal card clothing used for a cylinder in the carding machine used in the step S2-3 is 460-500Points/inch 2, the card clothing comprises a base part and needle teeth, the hardness of tooth tips is equal to or more than 780HV, the tooth tips comprise a first arc-shaped section, a straight section and a second arc-shaped section, the radius of the first arc-shaped section is 0.05mm, the radius of the second arc-shaped section is 0.1mm, the included angle of a front tooth surface is 55-60 degrees, and the included angle of a rear tooth surface is 30-35 degrees;
The doffer card clothing uses a tip of a olecranon-shaped tooth and has a negative rake angle of-5 DEG to-8 deg.
6. The production process of the yak wool/polylactic acid fiber/elastic yarn woven fabric according to claim 1, wherein the sum Mao Youbao comprises amino-terminated hyperbranched compound quaternary ammonium salt, cross-linked hyperbranched waterborne polyurethane acrylate, turkey oil, fatty alcohol polyvinyl ether sodium sulfate, soybean oil fatty acid methyl ester, stearyl alcohol phosphate, hydroxyl modified amino silicone oil and deionized water.
CN202510508453.3A 2025-04-22 2025-04-22 A production process for yak wool/polylactic acid fiber/comfortable stretch yarn woven fabric Pending CN120520007A (en)

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