Ice comfortable fabric and preparation method thereof

Abstract

The invention relates to the technical field of textile production, in particular to ice comfortable fabric and a preparation method thereof. The ice comfortable fabric comprises the following components in percentage by weight: 40-60% of mica ice comfortable fiber, 20-30% of bamboo fiber and 20-30% of viscose acetal fiber, and the cross section of the mica ice comfortable fiber is a special-shaped cross section. The mica ice comfortable fiber, the bamboo fiber and the viscose fiber are blended to prepare the ice comfortable fabric which is silky, cool and excellent in moisture absorption and sweat releasing performance and drapability.

Description

Technical Field

[0001] The invention relates to the technical field of textile production, and in particular to an ice-soft fabric and a preparation method thereof. Background Art

[0002] "Clothing, food, shelter, and transportation" are the necessities of life for human beings. Among them, "clothing" ranks first. It is something that people wear to cover their bodies and is an item that comes into direct contact with the surface of the human body. People wear clothes not only to "avoid cold and heat", prevent insects and wind and rain, and cover their bodies to avoid shame, but also to decorate their bodies and beautify their lives. Therefore, ancient Chinese clothing has become an important carrier of national history and culture. Our body's external response consciousness has six ways: eyes, ears, nose, tongue, body, and mind. When developing clothing, we need to try to meet these six ways, that is, to improve the color, appearance, comfort, etc. of clothing.

[0003] Summer weather is hot and the temperature is high, so summer clothing needs to be loose and breathable, light and cool, and have moisture absorption and quick-drying properties. Even if it is soaked with sweat, it can be quickly blown dry by the wind. For example, the Chinese invention patent with application number 201711091570.6 discloses a cool clothing fabric. The fabric is a double-layer fabric with a weft knitted structure design. The front of the fabric is a blended yarn of modified cool polyester and nylon, and the back of the fabric is silk fiber, which has a cool and comfortable wearing effect. However, the fabric has a double-layer structure and poor moisture absorption and quick-drying properties, and is not suitable for high-temperature outdoor scenes. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a cool and quick-drying ice-soft fabric and a preparation method thereof.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a Bingshu fabric, which includes 40-60% mica Bingshu fiber, 20-30% bamboo fiber and 20-30% viscose fiber by weight percentage, and the cross-section of the mica Bingshu fiber is a special-shaped cross-section.

[0006] Another technical solution adopted by the present invention is: the preparation method of the above-mentioned Bingshu fabric comprises the following steps:

[0007] S1: preparing a first blended sliver and a second blended sliver, wherein the first blended sliver and the second blended sliver are drawn and then sequentially subjected to a roving process, a spun yarn process, a winding process and a yarn steaming process to obtain a yarn;

[0008] S2: The yarn is sizing, dyeing and weaving in sequence to obtain Bingsu fabric.

[0009] The beneficial effects of the present invention are as follows: the preparation method of the Bingshu fabric of the present invention is to prepare the Bingshu fabric with silkiness, coolness, moisture absorption and perspiration and excellent drape by blending mica Bingshu fiber, bamboo fiber and viscose fiber. Among them, the mica Bingshu fiber plays a role in conducting heat and causing a cool feeling; the bamboo fiber has an antibacterial effect, and compared with conventional antibacterial additives, it is not only degradable and more environmentally friendly, but also has a certain hygroscopicity; the viscose fiber can improve the drape of the fabric, and has the advantages of good hygroscopicity, good hand feel and fast heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure shows the side texture and body texture of the Bingshu fabric of the first embodiment of the present invention. DETAILED DESCRIPTION

[0011] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0012] A Bingshu fabric comprises 40-60% mica Bingshu fiber, 20-30% bamboo fiber and 20-30% viscose fiber by weight percentage. The cross section of the mica Bingshu fiber is a special-shaped cross section.

[0013] From the above description, it can be seen that the beneficial effects of the present invention are:

[0014] The preparation method of mica Bingshu fiber is as follows: grind mica into sub-micron grade, add it to the fiber during spinning, and then pass it through the special-shaped spinneret to obtain a fiber structure with a special-shaped cross-section. Mica powder has long-lasting heat dissipation performance, and can be cleverly combined with the special-shaped cross-section with moisture absorption and perspiration performance to absorb, transmit and diffuse the heat, moisture and sweat of the skin to the surface of the clothing, so that the skin can be kept dry even in a humid environment; at the same time, Bingshu fiber will generate a large amount of negative ions through friction with the skin, and once worn, you will feel an instant cool feeling. Bingshu fiber retains the breathability of cotton, the strength of chemical fiber, and the luster of silk, and at the same time has the advantages of soft drape, unique touch, good elasticity, not easy to wrinkle, and easy to care for and wash.

[0015] The present invention combines mica Bingshu fiber with bamboo fiber and viscose fiber. The mica Bingshu fiber plays a role in conducting heat and causing a cool feeling. The bamboo fiber plays an antibacterial effect. Compared with conventional antibacterial additives, it is not only degradable and more environmentally friendly, but also has a certain hygroscopicity. The viscose fiber can improve the drape of the fabric and has the advantages of good hygroscopicity, good hand feel, and fast heat dissipation. The Bingshu fabric prepared by using the above three fibers has the characteristics of being silky, cool, moisture wicking and excellent drape.

[0016] If the content of mica Bingshu fiber in the present invention is too high, the moisture absorption effect is poor, and if the content is too low, the cooling feeling is limited; if the content of viscose fiber is too high, the fabric is unstable, shrinks greatly, and is easy to deform, and if the content is too low, the moisture absorption effect is poor; if the content of bamboo fiber is too high, the moisture absorption and perspiration effect and the cooling feeling are poor, and the weaving difficulty is too great, and if the content is too low, there is no antibacterial effect. Therefore, the Bingshu fabric of the present invention is controlled to include 40-60% mica Bingshu fiber, 20-30% bamboo fiber and 20-30% viscose fiber by weight percentage.

[0017] Furthermore, the cross section of the mica Bingshu fiber is triangular, cross-shaped or hexagonal.

[0018] Furthermore, the mica Bingshu fiber is polyester staple fiber.

[0019] From the above description, we can know that short fibers have the characteristics of natural fibers, and their softness, air permeability and moisture absorption are better than long fibers. Therefore, Mica Bingshu fiber is selected as polyester short fibers. However, due to the limitation of polyester material, polyester short fibers still have poor moisture absorption and need to be blended with viscose fibers to have excellent moisture absorption and perspiration performance.

[0020] Furthermore, the invention comprises warp yarn and weft yarn, both of which are compact siro-spun yarns blended from mica Bingshu fiber, bamboo fiber and viscose fiber; in terms of weight percentage, the compact siro-spun yarns comprise 40-60% mica Bingshu fiber, 20-30% bamboo fiber and 20-30% viscose fiber.

[0021] Furthermore, the warp tightness of the Bingshu fabric is 80-90%, the weft tightness is 60-65%, and the total tightness is 90-95%.

[0022] From the above description, it can be seen that if the tightness of the Bingshu fabric is too small, gaps will be generated between the yarns, and the heat conduction will be blocked by the air, and the cooling effect cannot be achieved; if the tightness is too large, the fabric will feel stiff, lose comfort, and have a poor antibacterial effect. Therefore, the present invention controls the warp tightness to 80-90%, the weft tightness to 60-65%, and the total tightness to 90-95%, and combines the raw material ratios of the three fibers to achieve the effects of heat conduction and antibacterial.

[0023] Furthermore, the warp density of the Bingshu fabric is 510-530 strands / 10cm, and the weft density is 390-400 strands / 10cm.

[0024] Another technical solution adopted by the present invention is: the preparation method of the above-mentioned Bingshu fabric comprises the following steps:

[0025] S1: preparing a first blended sliver and a second blended sliver, and after the first blended sliver and the second blended sliver are drawn, sequentially undergoing a roving process, a spun yarn process, a winding process, and a yarn steaming process to obtain a yarn;

[0026] S2: The yarn is sizing, dyeing and weaving in sequence to obtain Bingsu fabric.

[0027] Furthermore, before S1, the steps of blending, moistening, loosening, cleaning and combing the raw materials are also included in sequence.

[0028] Furthermore, the moisture regain when wetted is ≥ 8.0%.

[0029] Furthermore, the beater speed is 800-900r / min when grabbing cotton during cotton opening and cleaning; the beater speed is 600-700r / min when opening cotton, and the double-axial flow beater speed is 400-450r / min.

[0030] From the above description, we can know that in the process of opening and cleaning cotton, the impact on the fibers should be reduced to avoid the production of short fibers, and moderate loosening and uniform mixing should be the main focus.

[0031] Furthermore, when combing cotton, the sliver output speed is 90-110 m / min, the distance from the front upper cover plate to the cylinder inlet is 0.7-0.8 mm, the distance from the front upper cover plate to the cylinder outlet is 0.77-0.84 mm, the spacing from the cylinder to the cover plate is 0.18, 0.15, 0.15, 0.15, 0.18 mm, the cylinder speed is 440-450 r / min, the licker-in roller speed is 1000-1020 r / min, and the cover plate speed is 430-450 mm / min.

[0032] From the above description, it can be known that in the carding stage, in order to remove fine impurities, short fibers and neps, the flat plate speed should be appropriately increased, and the flat plate spacing should be tightened; the spacing between the front upper cover plate and the cylinder should be increased, and the flat plate flower amount should be increased; the doffer speed should be appropriately reduced, the carding load should be reduced, the carding quality should be improved, and the neps should be reduced; the speed ratio of the cylinder and the licker-in roller should be increased to facilitate fiber transfer, remove short fibers and larger impurities, and increase the partial cotton drop of the licker-in roller; the sliver output speed should be reduced to reduce the breakage caused by the falling of the cotton net.

[0033] Furthermore, during drawing, the drafting multiple in the area after the first drawing is 2.1 to 2.4 times, and the drafting multiple in the area after the last drawing is 1.2 to 1.4 times.

[0034] Furthermore, the final draw frame uses Rieter's RSB-D22 double-eye draw frame with auto-leveling.

[0035] From the above description, we can know that due to the short length of the main body of the fiber, the drawing process mainly adopts the process scheme of "small spacing and small drafting" to control the uniformity of the strip, weight deviation and the internal structure of the strip. The final drawing adopts Rieter's RSB-D22 double-eye drawing frame with self-adjusting leveling. The machine adopts a four-up and three-down curved drafting form with pressure bars, which can effectively ensure the quality of the yarn. The drafting multiples in the back zone are large for the first drawing and small for the final drawing, so as to improve the uniformity of the strip and increase the strength of the yarn.

[0036] Furthermore, the fine yarn process adopts a compact siro spinning method.

[0037] From the above description, we can know that compact siro spinning can reduce yarn hairiness and improve yarn strength. In order to cooperate with compact siro spinning, the roving quantity is appropriately reduced and the roving twist coefficient is increased during the roving process, and the unexpected elongation generated during the roving unwinding process is minimized while ensuring that the spun yarn does not produce hard ends, thereby reducing the yarn details and yarn defects.

[0038] Furthermore, the twist coefficient of the weaving yarn is 410-430.

[0039] From the above description, we can know that the spinning process increases the roller spacing in the back zone and reduces the drafting multiple in the back zone to exert the twisting effect of the roving, control the fiber movement, prevent the redistribution of the roving twist, and improve the yarn dryness. Since the average fiber is short, the twist coefficient is too large. The front gear uses a high-elasticity, low-hardness, and untreated rubber roller to improve the grip of the fiber and avoid the phenomenon of drafting failure; a special steel wire ring for compact spinning is used to reduce yarn hairiness and breakage.

[0040] Furthermore, in the winding process, the winding speed is ≤1000m / min.

[0041] From the above description, it can be seen that the winding speed does not exceed 1100m / min and the appropriate yarn tension is selected to avoid the deterioration of hairiness.

[0042] Furthermore, the specific steps of yarn steaming include sequentially entering the warehouse, feeding water, sealing the door, vacuum 1, shaping 1, exhausting steam, vacuum 2, shaping 2, exhausting steam, vacuum 3, feeding air and opening the warehouse to discharge the yarn.

[0043] From the above description, it can be seen that by steaming and shaping the yarn, the yarn strength can be increased by 5-10%, the elasticity is increased, the yarn surface hairiness is smooth, the breakage rate in the subsequent process is reduced, and the warping and weaving efficiency is improved. Steaming and shaping the yarn can stabilize the yarn twist and prevent the phenomenon of small braids being tangled due to untwisting during the weaving process; it can reduce the yarn shrinkage rate, improve the feel, gloss and surface clarity of the fabric, and stabilize the shrinkage rate of the finished product; it can improve the yarn coloring effect and improve the color uniformity of the cloth surface.

[0044] The mica Bingshu fiber in the following examples is a blend of polyester and mica mineral powder in a mass ratio of 100:1, with a length of 38 mm, a fineness of 1.56 dtex, an elongation at break of 25%, and a breaking strength of 42.4 cn / tex.

[0045] Embodiment 1 of the present invention is: a method for preparing a Bingshu fabric, the steps are as follows:

[0046] S1. Cotton blending: (A) 1500 kg of mica Bingshu fiber, (B) 1100 kg of bamboo fiber and (C) 1100 kg of viscose fiber are used for cotton blending. The cross section of the mica Bingshu fiber is a triangle. The cotton blending method of the reciprocating cotton plucking machine is shown in Table 1.

[0047] Table 1

[0048]

[0049]

[0050] S2. Moisturizing: spray pre-wet the raw materials before opening, and the moisture regain should not be less than 8.0%.

[0051] S3. Opening and cleaning cotton: When picking cotton, the beater speed is 900r / min, the distance between the blade and the rib is 2mm, and the cotton picking trolley descends by 3mm; when opening cotton, JWF1124 fine cotton opener is used, combing needle beaters are selected, the beater speed is 700r / min, and the double-axial flow beater speed is 450r / min; the unevenness rate of raw sliver is controlled within 2.0%, and the cotton drop rate of the cleaning and combing joint is controlled at about 14%.

[0052] S4, carding: the sliver delivery speed is 110m / min, the distance from the front upper cover plate to the cylinder inlet is 0.66mm, the distance from the front upper cover plate to the cylinder outlet is 0.79mm, the spacing from the cylinder to the cover plate is 0.18, 0.15, 0.15, 0.15, 0.18mm; the pointer of the licker-in roller cotton drop plate is 100, the cylinder speed is 450r / min, the licker-in roller speed is 1020r / min, the cover plate speed is 450mm / min; the sliver unevenness rate is controlled within 3.5%, and the sliver short fiber rate is within 15%.

[0053] S5. Drawing: prepare the first blended sliver and the second blended sliver, and then draw them together; the Rieter RSB-D22 double-eye drawing frame with autoleveling is used for drawing; the process parameters for drawing are shown in Table 2.

[0054] Table 2

[0055] project Head and End Basis weight (g / 5m) 23.0 22.0 Combination number (root) 6 8 Total draft (times) 4.8 8.2 Back draft (times) 2.1 1.2 Roller gauge(mm) 40×45 40×45 Bell mouth diameter (mm) 4.0 4.0 Sliver delivery speed (m / min) 400 400 Bar dryness (CV%) 3.5 Weight unevenness (%) 0.8

[0056] S6. Roving process: The roving machine uses JWF1415 four-roller double short apron drafting. The process parameters of the roving process are shown in Table 3.

[0057] Table 3

[0058]

[0059]

[0060] S7. Spinning process: The spinning process adopts the compact siro spinning method, and the twist coefficient of the weaving yarn is 410; the process parameters of the spinning process are shown in Table 4.

[0061] Table 4

[0062] project parameter Roller gauge(mm) 17.5x30 Total draft (times) 67 Post draft (times) 1.1 Twist Factor 400 Spindle speed (r / min) 14000 Spacer(mm) 2.5 Rubber roller hardness 65 Steel Ring PG1 4254 Wire Garden Lasmer Grid national number 120

[0063] S8. Cone winding process: The cone winding process uses a Schlafhorst yarn warehouse automatic winder equipped with a Meisdan air splicer and a Lofi electric cleaner; the winding speed is ≤1000m / min, and the yarn feeding index of the cone after winding is shown in Table 5.

[0064] Table 5

[0065] project index Single strength (cN / tex) 12.5 Single strong CV (%) 9.8 Bar dryness (CV%) 16.6 -50% details (pieces / km) 12 -50% thick places (pieces / km) 385 +200% cotton neps(pcs / km) 391 Hairiness (H) 4.2

[0066] S9. Yarn steaming: Use a fully automatic vacuum setting steamer to steam and set the cotton yarn to obtain cool and compact siro-spun yarn. The specific steps of yarn steaming are: entering the warehouse, feeding water, sealing the door, vacuum 1, setting 1, exhausting steam, vacuum 2, setting 2, exhausting steam, vacuum 3, entering the atmosphere and opening the warehouse to discharge the yarn. The process parameters of yarn steaming are shown in Table 6.

[0067] Table 6

[0068] project parameter Vacuum 1 temperature (℃) 70 Setting 1 holding time (min) 45 Setting temperature 1(℃) 100 Exhaust time (min) 2 Vacuum 2 temperature (℃) 100 Setting 2 holding time (min) 45 Setting temperature 3 (℃) 90 Vacuum 3 time (seconds) 40 Atmospheric entry time (min) 6 Vacuum 3 time (seconds) 40

[0069] S10, Sizing and dyeing: Use warp beam sizing to draw out the warp yarns on several warp beams at the same time, immerse them in slurry, press out the remaining liquid, dry and separate the yarns, and finally roll them into weaving beams.

[0070] S11, Weaving: Weaving into Bingshu fabric on a jet dobby machine;

[0071] The specific drawing in is as follows: 1. Side: 1.2.1.2. 80 threads / side, 160 threads in total on both sides, 4 threads / reed; 2. Body: 3.4.5.6 drawing in, 4 threads / reed; the fabric design is 2 / 2 right oblique weave, see the weave diagram Figure 1 .

[0072] The warp yarn is: 30S / 1 cool and compact siro-spun yarn (by weight percentage, composed of 40% mica Bingshu fiber, 30% bamboo fiber and 30% viscose fiber), with a diameter of 0.163mm and a warp density of 520 strands / 10cm;

[0073] The weft yarn is: 30S / 1 cool and compact siro-spun yarn (by weight percentage, composed of 40% mica Bingshu fiber, 30% bamboo fiber and 30% viscose fiber), with a diameter of 0.163mm and a weft density of 398 yarns / 10cm;

[0074] The warp tightness of Bingshu fabric is 85%, the weft tightness is 65%, and the total tightness is 95%.

[0075] Embodiment 2 of the present invention is:

[0076] The difference between Example 2 and Example 1 is that: 1500Kg of mica Bingshu fiber, 750Kg of bamboo fiber and 750Kg of viscose fiber are used for cotton blending in S1. In S3, the beater speed is 850r / min when grabbing cotton; the beater speed is 600r / min when opening cotton, and the double-axial flow beater speed is 400r / min. In S4, the strip output speed is 100m / min, the distance from the front upper cover plate to the cylinder inlet is 0.7mm, the distance from the front upper cover plate to the cylinder outlet is 0.8mm, the cylinder speed is 445r / min, the licker-in roller speed is 1000r / min, and the cover plate speed is 440mm / min. In S5, the drafting multiples in the head and rear zone are 2.2 times, and the drafting multiples in the end and rear zone are 1.3 times. The twist coefficient of the weaving yarn in S7 is 420. The warp density of S11 is 510 strands / 10cm, the weft density is 390 strands / 10cm, the warp tightness of Bingshu fabric is 80%, the weft tightness is 60%, and the total tightness is 90%.

[0077] Embodiment 3 of the present invention is:

[0078] The only difference between Example 3 and Example 1 is that 1440Kg of mica Bingshu fiber, 480Kg of bamboo fiber and 480Kg of viscose fiber are used for cotton blending in S1. In S3, the beater speed is 800r / min when grabbing cotton; the beater speed is 650r / min when opening cotton, and the double-axial flow beater speed is 430r / min. In S4, the strip output speed is 90m / min, the distance from the front upper cover plate to the cylinder inlet is 0.7mm, the distance from the front upper cover plate to the cylinder outlet is 0.77mm, the cylinder speed is 440r / min, the licker-in roller speed is 1010r / min, and the cover plate speed is 430mm / min. In S5, the drafting multiples in the head and rear zone are 2.4 times, and the drafting multiples in the end and rear zone are 1.4 times. The twist coefficient of the weaving yarn in S7 is 430. The warp density of S11 is 530 strands / 10cm, the weft density is 400 strands / 10cm, the warp tightness of Bingshu fabric is 90%, the weft tightness is 63%, and the total tightness is 93%.

[0079] The fourth embodiment of the present invention is: the Bingshu fabric is prepared by the preparation method of the first embodiment.

[0080] Comparative Example 1 of the present invention is:

[0081] The difference between Comparative Example 1 and Example 1 is that, by weight percentage, the material comprises 30% mica Bingshu fiber, 35% bamboo fiber and 35% viscose fiber.

[0082] Comparative Example 2 of the present invention is:

[0083] The difference between Comparative Example 2 and Example 1 is that, by weight percentage, the material is composed of 70% mica Bingshu fiber, 15% bamboo fiber and 15% viscose fiber.

[0084] Comparative Example 3 of the present invention is:

[0085] The only difference between Comparative Example 3 and Example 1 is that the warp tightness of the Bingshu fabric is 70%, the weft tightness is 55%, and the total tightness is 80%.

[0086] Comparative Example 4 of the present invention is:

[0087] The only difference between Comparative Example 4 and Example 1 is that the warp tightness of the Bingshu fabric is 95%, the weft tightness is 67%, and the total tightness is 98%.

[0088] The Bingshu fabrics prepared in Example 1 and Comparative Examples 1 to 4 were tested, and the test results are shown in Table 7. The coolness test refers to the national standard GB / T 35263-2017 "Testing and evaluating the coolness of textile contact", the antibacterial performance test is GB / T 20944.1-2007, the drape test is tested using a DP-1 drape coefficient tester, and the moisture absorption and perspiration test refers to the GB / T21655.1-2023 moisture absorption and quick-drying performance standard.

[0089] Table 7

[0090]

[0091] In summary, the Bingshu fabric and its preparation method provided by the present invention combine mica Bingshu fiber with a special cross-section with bamboo fiber and viscose fiber. The mica Bingshu fiber plays a role in conducting heat and perspiration, causing a cool feeling. However, since it is a polyester staple fiber, its hygroscopicity is poor, so it is blended with viscose fiber to improve the hygroscopicity, feel and drape of the fabric; the bamboo fiber plays an antibacterial effect and also has a certain hygroscopicity; at the same time, the tightness of the fabric and the raw material ratio are controlled to achieve the effects of heat conduction and antibacterial. In this way, a Bingshu fabric with both silky, cool, hygroscopic and perspiration-wicking properties and drape is prepared.

[0092] Since the three fibers of the present invention are all artificial fibers and are longer than natural fibers, the intensity of the beaters' impact on the fibers can be reduced in the cotton cleaning process, the width of the cover plate and the cylinder can be increased, and the sliver output speed of the carding machine can be reduced, thereby reducing the probability of short fibers in the composite fibers and reducing the unevenness of the raw slivers.

[0093] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A Bingshu fabric, characterized in that: Calculated by weight percentage, it comprises 40-60% of mica Bingshu fiber, 20-30% of bamboo fiber and 20-30% of viscose fiber, and the cross section of the mica Bingshu fiber is a special-shaped cross section.

2. The Bingshu fabric according to claim 1, characterized in that: The mica Bingshu fiber is polyester staple fiber.

3. The Bingshu fabric according to claim 1, characterized in that: The invention comprises warp yarn and weft yarn, both of which are compact siro-spun yarns blended from mica Bingshu fiber, bamboo fiber and viscose fiber; in terms of weight percentage, the compact siro-spun yarns comprise 40-60% of mica Bingshu fiber, 20-30% of bamboo fiber and 20-30% of viscose fiber.

4. The Bingshu fabric according to claim 1, characterized in that: The warp tightness of the Bingshu fabric is 80-90%, the weft tightness is 60-65%, and the total tightness is 90-95%.

5. The Bingshu fabric according to claim 1, characterized in that: The warp density of the Bingshu fabric is 510-530 strands / 10cm, and the weft density is 390-400 strands / 10cm.

6. The method for preparing the Bingshu fabric according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: preparing a first blended sliver and a second blended sliver, wherein the first blended sliver and the second blended sliver are drawn and then sequentially subjected to a roving process, a spun yarn process, a winding process and a yarn steaming process to obtain a yarn; S2: The yarn is sizing, dyeing and weaving in sequence to obtain Bingsu fabric.

7. The method for preparing the Bingshu fabric according to claim 6, characterized in that: Before S1, the steps of cotton blending, moistening, loosening, cleaning and combing the raw materials are also included in sequence.

8. The method for preparing the Bingshu fabric according to claim 7, characterized in that: The beater speed during cotton opening and cleaning is 800-900 r / min; the beater speed during cotton opening is 600-700 r / min, and the double-axial flow beater speed is 400-450 r / min.

9. The method for preparing the Bingshu fabric according to claim 6, characterized in that: During the drawing process, the drafting multiple in the zone after the first drawing is 2.1 to 2.4 times, and the drafting multiple in the zone after the last drawing is 1.2 to 1.4 times.

10. The method for preparing Bingshu fabric according to claim 6, characterized in that: In the winding process, the winding speed is ≤1000m / min.

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