Bio-based warp-knitted wear-resistant wool fabric and preparation method thereof

Abstract

The bio-based warp-knitted wear-resistant wool fabric comprises Sorona bottom yarn and wool surface yarn, the wool surface yarn is formed by wrapping core yarn polyamide filaments with wool yarn, the Rorona bottom yarn and the wool surface yarn are knitted into the wool fabric through a warp knitting machine, and the knitting strength of the wool surface yarn is guaranteed through the polyamide filaments; according to the wool fabric, the elastic restoring force and the extensibility of the warp-knitted fabric are guaranteed through the Sorona bottom yarn. The problem that an existing wool warp-knitted fabric cannot be used as a fabric for underwear can be solved, and the fabric is integrally soft, comfortable and high in extensibility.

Description

Technical Field

[0001] The invention relates to the technical field of wool warp knitted fabrics, and in particular to a bio-based warp knitted wear-resistant wool fabric and a preparation method thereof. Background Art

[0002] As consumers' requirements for clothing quality and comfort increase, the demand for clothing fabrics is also further increasing. Wool is a natural protein fiber with the characteristics of soft touch, strong moisture absorption, excellent warmth retention, and natural and soft luster. It is an ideal choice for making high-end fabrics.

[0003] However, due to the immaturity of existing production processes, wool is rarely used in warp knitting and there are several major problems: 1. Due to the low strength and high hairiness of wool yarn, flat knitting machines and large circular knitting machines are currently used for production, and warp knitting machines are difficult to use. 2. Even if the twist of the yarn is increased to meet the requirements of warp knitting, the resulting fabric often has a very poor hand feel and low extensibility, making it difficult to use as clothing fabrics. 3. Wool warp knitted fabrics are not soft enough and have an obvious itchy feeling, making them unsuitable for use as underwear. Therefore, in the preparation of clothing fabrics made of wool warp knitted fabrics, new weaving processes and yarn ratios are required, as well as dyeing and finishing process adjustments to solve the above technical problems. Summary of the invention

[0004] In order to solve some or certain technical problems existing in the prior art, one of the purposes of this application is to provide a bio-based warp-knitted wear-resistant wool fabric, which can solve the problem that the existing wool warp-knitted fabric cannot be used as fabric for underwear. The fabric is soft, comfortable and has high extensibility.

[0005] The second purpose of the present application is to provide a method for preparing a bio-based warp-knitted wear-resistant wool fabric, which can enable the wool fabric to be produced through a warp knitting machine, and the formed wool warp-knitted fabric has good extensibility and a soft and comfortable wearing experience.

[0006] In order to solve the above existing technical problems, one of the purposes of this application is achieved by adopting the following technical solution:

[0007] A bio-based warp-knitted wear-resistant wool fabric, characterized in that it includes a Solona base yarn and a wool face veil, wherein the wool face veil is formed by wrapping a core yarn nylon filament with wool yarn, the Solona base yarn and the wool face veil are woven into the wool fabric through a warp knitting machine, the wool face veil is ensured to have weaving strength by the nylon filament, and the wool fabric is ensured to have elastic recovery force and extensibility of the warp knitted fabric by the Solona base yarn.

[0008] Preferably, the twist of the wool yarn is 1100-1250 twists / m.

[0009] Preferably, the content of the wool veil is 55-65%.

[0010] Preferably, the content of nylon filaments in the core yarn of the wool yarn is 15-20%.

[0011] Preferably, the Salona base yarn is made of 75D / 36F yarn, and the wool surface yarn is made of 130D yarn.

[0012] The second purpose of this application is achieved by the following technical solution:

[0013] A method for preparing a bio-based warp-knitted wear-resistant wool fabric, characterized in that:

[0014] S1. Grey fabric forming: warping and weaving the Sorona base yarn and wool surface yarn into bio-based warp knitted wool fabric grey fabric through a warp knitting machine;

[0015] S2, unwinding: the flat width joining machine is used to unwind the grey cloth from the cloth cart.

[0016] S3. Grey cloth shaping: the shaping temperature is 175-185℃, and the shaping speed is 25-30m / min;

[0017] S4, dyeing: dyeing the Sorona yarn, wherein the disperse dye for the Sorona yarn is added with a leveling agent of 0.2-0.5g / L and a wool protective agent of 2-3g / L, the pH value of the disperse dye for the Sorona yarn is 4.2-4.6, the dyeing temperature is 120-130°C, and the heat preservation time is 30-45min; then the wool is reduced and cleaned by a 1-2g / L acidic reduction cleaning machine at 80-85°C to remove the staining of the wool, and then washed again after cooling, and after washing, 0.1-0.2g / L of citric acid is added to run for 10min and the pH is adjusted, and then the yarn is taken out of the cylinder;

[0018] S5, dehydration and opening: use a centrifugal dehydrator to dehydrate the fabric until the surface is 70% to 80% dry. After dehydration, use an opening machine to open the fabric, so that the fabric is opened from a rope shape and falls flat into the fabric car, and the dyed grey fabric is opened continuously;

[0019] S6, drying cloth, the grey cloth after dehydration and opening is dried to ensure the cloth surface is flat, the drying and shaping temperature is 140-150℃, and the speed is 25-35m / min;

[0020] S7, sanding: use a double planetary high-speed brushing machine with a carbon fiber sanding roller for sanding, the sanding speed is 15-20m / min, the rotation speed is 1400r / min, sanding 2-4 times, so that the fabric surface has plush;

[0021] S8, finished product shaping: the shaping temperature of the finished product is 140-150°C, the speed is 25-30m / min, 3-5% of high-concentration softener is added during the shaping process, and a stable width and thickness are obtained through the finished product shaping process, so that the suede surface of the finished product is uniform;

[0022] S9. Finished product inspection: Carry out finished product quality inspection on the finished fabrics obtained. The finished product quality inspection includes measuring one or more of the width, weight, thickness, and length.

[0023] Preferably, the grey cloth is boiled before dyeing, the water for boiling the cloth contains additives, the additives include 0.3-1 g / L low foaming refining agent and 1-2 g / L degreasing agent, and the water is run at 80-90°C for 20-30 min.

[0024] Preferably, step S4 adopts a double dyeing process of Sorona and wool. When dyeing, Sorona is dyed first and then wool. After Sorona dyeing is completed, wool needs to be washed before dyeing, and then wool is dyed after washing. The dye for wool dyeing adopts acid dye, and the acid dye includes 0.8-1.5g / L of glacial acetic acid, adjusts the pH to 4.5-4.7, and 0.3-0.8g / L of acid leveling agent. The dyeing temperature of the acid dye is 85°C-100°C, and the insulation time is 30-50min. Then, 1-1.5g / L of color fixing agent is added, and the temperature is kept at 70-73°C for 15-20min, and then soaped with hot water at 80-85°C for 15-20min. The content of soaping agent in the hot water soaping is 1-1.5g / L. After cooling, it is washed again with water. During the washing process, 0.1-0.2g / L of citric acid is added and operated for 10min and the pH is adjusted. After washing with water, it is taken out of the cylinder.

[0025] Preferably, after the grey cloth is dyed with Sorona, it is reduced and cleaned using 0.8-1.5 g / L of an acidic reducing agent.

[0026] Preferably, the shaping temperature of the finished product is 140-150° C., the speed is 25-30 m / min, and 3-5% of a moisture-absorbing quick-drying agent is added during the shaping process of the finished product.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] When producing wool fabrics, choosing Solona as the base yarn can make the produced wool fabrics have excellent elastic recovery and shape retention, and at the same time neutralize the problem of poor extensibility of wool veils in warp knitted fabrics, so that the fabrics have good extensibility while taking into account the moisture absorption and antibacterial properties of wool, which is convenient for movement and improves the wearing experience. The wool veil adopts a structure in which the core yarn is wrapped with wool yarn and is nylon filament, which can improve the overall strength and wear resistance of the wool yarn. The combination of the two can also effectively reduce the problem of excessive hairiness, so that it can be warped and woven by warp knitting machines, effectively solving the problems that existing wool fabrics are difficult to weave on warp knitting machines, and the warp knitted wool fabrics woven into shape have low softness and poor extensibility and cannot be used as fabrics for underwear.

[0029] The wool fabric is dyed with the Solona and wool double dyeing process, and then sanded 2-4 times by a double planetary high-speed brushing machine with a carbon fiber sanding roller at a speed of 15-20m / min and a rotation speed of 1400r / min, so that plush is produced on the surface of the fabric, which can make the wool fabric feel good and have high extensibility, effectively improve the stiffness and roughness of the surface of the grey cloth, and enhance the hand feel and wearing experience, so that it is more comfortable when worn close to the body, and can be used as close-fitting fabrics. In the preparation of clothing fabrics of wool warp knitted fabrics, the new weaving process and yarn ratio adjustment, combined with the dyeing and finishing process adjustment, effectively solves the problem that the existing wool warp knitted fabrics are not soft enough, have obvious itching, and cannot be used as close-fitting clothes. DETAILED DESCRIPTION

[0030] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] Embodiment 1:

[0032] A bio-based warp-knitted wear-resistant wool fabric comprises a Sorona base yarn and a wool veil, wherein the wool veil is formed by wrapping a core yarn nylon filament with wool yarn, and the Sorona base yarn and the wool veil are woven into the wool fabric by a warp knitting machine, wherein the nylon filament is used to ensure the weaving strength of the wool veil, and the Sorona base yarn is used to ensure the elastic recovery force and extensibility of the warp knitted fabric of the wool fabric.

[0033] Due to the low strength and high hairiness of wool yarn, it is difficult to produce wool fabrics on warp knitting machines. In addition, wool warp knitted fabrics are not soft enough and have obvious itching, so they cannot be used as underwear. As a bio-based fiber, Sorona has low-carbon and environmentally friendly characteristics and is an important material for achieving sustainable development goals. Therefore, when producing wool fabrics, Sorona is selected as the base yarn, which can make the produced wool fabrics have excellent elastic recovery and shape retention. At the same time, it also neutralizes the problem of poor extensibility of wool veils in warp knitted fabrics, so that the fabrics have good extensibility while taking into account the moisture absorption and antibacterial properties of wool, which is convenient for movement and improves the wearing experience. The wool veil adopts a structure in which the core yarn is wrapped with wool yarn and is nylon filament, which can improve the overall strength and wear resistance of the wool yarn. The combination of the two can also effectively reduce the problem of high hairiness, so that it can be warped and woven by warp knitting machines, effectively solving the problems that existing wool fabrics are difficult to weave on warp knitting machines, and the warp knitted wool fabrics woven into shape have low softness and poor extensibility and cannot be used as underwear fabrics.

[0034] A further improvement is that the twist of the wool yarn is 1100-1250 twists / m.

[0035] Even if the existing wool yarn meets the requirements of warp knitting by increasing the twist of the yarn, the resulting fabric often has a very poor feel and low extensibility, making it difficult to use in clothing fabrics. Therefore, the wool veil is made of wool yarn wrapped around the core yarn nylon filament. When weaving, increasing the twist to more than 1100 twists / meter can improve the strength and wear resistance of the yarn, facilitate the blending of wool and nylon, and reduce hairiness.

[0036] A further improvement is that the wool yarn content is 55-65%.

[0037] The content of wool veil is 55-65%, which can make the wool fabric more comfortable when used as a close-fitting fabric. Even after stretching, it can ensure sufficient coverage to avoid exposure of the internal Sorona base yarn.

[0038] A further improvement is that the content of nylon filaments in the core yarn of the wool yarn is 15-20%.

[0039] The wool yarn is core-wrapped with a small amount of nylon filament, and the twist of the yarn is increased to improve the overall strength and wear resistance of the yarn to a certain extent.

[0040] A further improvement is that the Sorona base yarn is made of 75D / 36F yarn, and the wool surface yarn is made of 130D yarn.

[0041] The bio-based warp-knitted wear-resistant wool fabric is formed by combining 75D / 36F Sorona base yarn and 130D wool veil. The formed wool warp-knitted fabric has good extensibility, soft and comfortable wearing experience, and is also more convenient for subsequent dyeing and finishing.

[0042] Embodiment 2:

[0043] A method for preparing a bio-based warp-knitted wear-resistant wool fabric, the preparation method comprising:

[0044] S1. Grey fabric forming: 75D / 36F Sorona base yarn and 130D wool-nylon blended yarn with nylon filament as core yarn are warped and woven into bio-based warp knitted wool fabric grey fabric through a warp knitting machine;

[0045] S2, unwinding: the flat width joining machine is used to unwind the grey cloth from the cloth cart.

[0046] S3. Grey cloth shaping: The shaping temperature is 175-185℃ and the shaping speed is 25-30m / min; the purpose is to stabilize the size of the fabric and make the surface smooth for subsequent processing;

[0047] S4, dyeing: dyeing the Sorona yarn, wherein the disperse dye for the Sorona yarn is added with 0.2-0.5g / L of leveling agent and 2-3g / L of wool protective agent, the pH value of the disperse dye for the Sorona yarn is 4.2-4.6, the dyeing temperature is 120-130°C, and then the wool is cleaned by reduction cleaning with 1-2g / L of 80-85°C acidic reduction cleaning agent to remove the staining of the wool, and then washed again after cooling, and after washing, 0.1-0.2g / L of citric acid is added to run for 10min and adjust the pH, and then out of the cylinder;

[0048] After dyeing the Sorona base yarn, when dyeing medium-dark fabrics, it is necessary to use an acidic reducing cleaning agent for reduction cleaning. The purpose of reduction cleaning is to wash away the staining on the wool and the unfixed dye on the Sorona, improve the fastness and prevent staining.

[0049] S5. Dehydration and opening: Use a centrifugal dehydrator to dehydrate the fabric until it is 70% to 80% dry, and the dehydration time is about 350-450s. After dehydration, use an opening machine to open the fabric, so that the fabric is opened from a rope and falls flat into the fabric car, and the dyed grey fabric is opened continuously; the opening speed is generally 85-110m / min;

[0050] S6, drying cloth, the grey cloth after dehydration and opening is dried to ensure the cloth surface is flat, the drying and shaping temperature is 140-150℃, and the speed is 25-35m / min;

[0051] S7, sanding: use a double planetary high-speed brushing machine with a carbon fiber sanding roller for sanding, the sanding speed is 15-20m / min, the rotation speed is 1400r / min, sanding is 2-4 times, so that the fabric surface produces plush; sanding improves the stiffness and roughness of the surface, and enhances the hand feel and wearing experience;

[0052] S8, finished product shaping: the shaping temperature of the finished product is 140-150°C, the speed is 25-30m / min, 3-5% of high-concentration softener is added during the shaping process, and a stable width and thickness are obtained through the finished product shaping process, so that the suede surface of the finished product is uniform;

[0053] S9. Finished product inspection: Carry out finished product quality inspection on the finished fabrics obtained. The finished product quality inspection includes measuring one or more of the width, weight, thickness, and length.

[0054] When preparing bio-based warp-knitted wear-resistant wool fabrics, the blending of Sorona base yarn and wool yam can ensure the strength of the wool yarn, so that it can be produced by a warp knitting machine. When the formed grey cloth is being shaped, since the bio-based warp-knitted wool fabric grey cloth is warped and woven with Sorona base yarn and wool yam, the shaping temperature and speed need to be adjusted in a targeted manner when the grey cloth is shaped. When the shaping temperature is 175-185°C and the shaping speed is 25-30m / min, the surface of the grey cloth is smoother after shaping, and the size of the fabric after shaping is more stable, which is convenient for subsequent processing. After processing, only the Sorona base yarn is dyed. When dyeing the Sorona base yarn, 0.2-0.5g / L of leveling agent and 2-3g / L of wool protective agent are added to the disperse dyes used for the Sorona base yarn to prevent the loss of wool strength. At the same time, the pH value of the dye solution is adjusted to 4.2-4.6, the dye temperature is 120-130℃, and the insulation time is 30-45min; then the wool is reduced and cleaned with 1-2g / L of acidic reducing cleaning agent at 80-85℃ to remove the staining of the wool. After washing with water, add 0.1-0.2g / L of citric acid and run for 10min and adjust the pH, and then take it out of the tank;

[0055] It can effectively remove the staining of wool; make the wool fabric have a clipping effect, bringing a good visual experience; add 3-5% of high-concentration softener when the finished product is finalized, and obtain a stable width and thickness through the finalization process of the finished product, so that the suede surface of the finished product is uniform; the overall fabric surface is smooth, soft, highly elastic and wear-resistant, suitable for making autumn and winter coats. Then the grey cloth after dehydration and opening is dried to ensure the smoothness of the cloth surface. After drying, it is sanded 2-4 times by a double planetary high-speed brushing machine with a carbon fiber sanding roller at a speed of 15-20m / min and a rotation speed of 1400r / min, so that plush is produced on the surface of the fabric, which can make the wool fabric feel good and have high extensibility, effectively improve the stiffness and roughness of the grey cloth surface, enhance the hand feel and wearing experience, so that it is more comfortable when worn close to the body, and can be used as close-fitting fabrics. In the preparation of wool warp knitted fabric clothing fabrics, through the adjustment of new weaving processes and yarn ratios, combined with dyeing and finishing process adjustments, the problems of existing wool warp knitted fabrics being insufficiently soft and having obvious itching, and being unable to be used as close-fitting clothing, are effectively solved.

[0056] A further improvement is that the grey cloth is boiled before dyeing, the boiling water contains additives, the additives include 0.3-1 g / L low foaming refining agent and 1-2 g / L degreasing agent, and the water is run at 80-90°C for 20-30 min.

[0057] The floating hair, stains and grease on the fabric can be effectively cleaned, so that the grey fabric is cleaner during dyeing and the color fastness is better during the dyeing process.

[0058] The bio-based warp-knitted wear-resistant wool fabric prepared by the above process is dyed with single-dyed Solona and undyed wool. The high-concentration softener is added with 3-5% to give the fabric a clipping effect, bringing a good visual experience. The overall fabric is smooth, soft, highly elastic and wear-resistant, and is suitable for making autumn and winter coats.

[0059] The specific physical properties of the bio-based wool warp knitted fabric of Example 2 are as follows:

[0060]

[0061] Embodiment 3:

[0062] On the basis of Example 2, certain adjustments are made, wherein the step S4 adopts a double dyeing process of Solona and wool. During dyeing, Solona is dyed first and then wool. After Solona dyeing is completed, wool needs to be cleaned before dyeing, and then wool is dyed after cleaning. The dye used for wool dyeing is an acid dye, and the acid dye includes 0.8-1.5 g / L of glacial acetic acid, adjusts the pH to 4.5-4.7, and an acid leveling agent of 0.3-0.8 g / L. The dyeing temperature of the acid dye is 90°C-100°C, and the heat preservation time is 30-50 min. Then, a color fixing agent of 1-1.5 g / L is added, and the temperature is kept at 70-80°C for 15-20 min, and then the temperature is kept at 80-80°C for 15-20 min. Soap washing in hot water at 5°C for 15-20min, wherein the content of soaping agent in the hot water soap washing is 1-1.5g / L, washing again after cooling, adding 0.1-0.2g / L of citric acid after washing for 10min and adjusting the pH, and then exiting the vat; dyeing by double dyeing process of Solona and wool, which can make the Solona bottom layer and the wool surface layer in the bio-based wool warp knitted fabric have the same color or their own colors, and the dyeing flexibility is better. When dyeing, Solona is dyed first and then wool is dyed. After Solona dyeing is completed, wool needs to be washed before dyeing, and wool is dyed after washing. The dye used for wool dyeing is acid dye, which can take into account both wool and the coated spandex, so that the textile is white and more beautiful.

[0063] After the grey cloth is dyed with Solona, ​​it is reduced and cleaned with an acidic reducing agent of 0.8-1.5 g / L. After the grey cloth is dyed with Solona, ​​it is reduced and cleaned with an acidic reducing agent of 0.8-1.5 g / L to wash away the staining of the wool by the disperse dye and the unfixed dye on the surface of Solona, ​​so as to provide a stable dyeing environment for the subsequent wool dyeing, and avoid the occurrence of uneven coloring, local color difference, and decreased fastness when dyeing with acid dyes in the later stage.

[0064] Further improvement is that the shaping temperature of the finished product is 140-150°C, the speed is 25-30m / min, and 3-5% of the moisture absorbing and quick-drying agent is added during the shaping process of the finished product. Generally, when the moisture absorbing and quick-drying agent is added, the high-concentration softener is directly replaced with the moisture absorbing and quick-drying agent in the finished product shaping step of S8, and other processes remain unchanged.

[0065] Compared with Example 2, a setting temperature of 140-150°C is used when the finished product is set, and 3-5% of the moisture absorption and quick-drying agent is added, so that a peach skin-like feel can be obtained, which has moisture absorption and quick-drying functions, is wear-resistant and scratch-resistant, and has comfortable elasticity. It can make the width and thickness of the fabric after the finished product is set more stable, make the finished suede surface more uniform, and enhance the moisture absorption and quick-drying function of the fabric.

[0066] The specific physical properties of the bio-based wool warp knitted fabric of Example 3 are as follows:

[0067]

[0068] Embodiment 4:

[0069] Based on Example 2, certain adjustments are made, wherein step S7 adopts raising and shearing, and a double-cylinder raising machine is used to raise the reverse side, the raising speed is 15-20m / min, and the raising is performed 3-4 times, so that fluff is produced on the surface of the fabric, and the length of the fluff is 1-2mm; then the fluff surface is sheared by about 1mm through a shearing machine to obtain a smooth fluff surface.

[0070] By raising and shearing the back side to form a layer of fluffy surface with a certain thickness, the warmth retention is improved while the softness and wearing experience are improved.

[0071] A further improvement is that the shaping temperature of the dry cloth is 140-150°C, the speed is 25-30m / min, and the raising agent is added at 10-20g / L to make the cloth more fluffy and cheap, thereby improving the subsequent raising effect.

[0072] The specific physical properties of the bio-based wool warp knitted fabric of Example 4 are as follows:

[0073]

[0074] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A bio-based warp knitted wear-resistant wool fabric, characterized in that: The invention comprises a Salona base yarn and a wool veil, wherein the wool veil is formed by wrapping a core yarn nylon filament with wool yarn, and the Salona base yarn and the wool veil are woven into a wool fabric by a warp knitting machine. The nylon filament is used to ensure the weaving strength of the wool veil, and the Salona base yarn is used to ensure the elastic recovery force and the extensibility of the warp knitted fabric of the wool fabric.

2. The bio-based warp knitted wear-resistant wool fabric according to claim 1, characterized in that: The twist of the wool yarn is 1100-1250 twists / m.

3. The bio-based warp-knitted wear-resistant wool fabric according to claim 1, characterized in that: The content of the wool veil is 55-65%.

4. The bio-based warp knitted wear-resistant wool fabric according to claim 3, characterized in that: The content of nylon filaments in the core yarn of the wool yarn is 15-20%.

5. The bio-based warp-knitted wear-resistant wool fabric according to claim 4, characterized in that: The Sorona base yarn is made of 75D / 36F yarn, and the wool veil is made of 130D yarn.

6. A method for preparing the bio-based warp knitted wear-resistant wool fabric according to any one of claims 1 to 5, characterized in that: The preparation method comprises S1. Grey fabric forming: warping and weaving the Sorona base yarn and wool surface yarn into bio-based warp knitted wool fabric grey fabric through a warp knitting machine; S2, Unwinding: Through the flat-width jointing machine, the flat-width cloth cart connected to the grey cloth is unwound. S3. Grey cloth shaping: the shaping temperature is 175-185℃, and the shaping speed is 25-30m / min; The purpose is to stabilize the size of the fabric and make the surface smooth for subsequent processing. S4, dyeing: dyeing the Sorona yarn, wherein the Sorona yarn disperse dye is added with 0.2-0.5g / L of leveling agent and 2-3g / L of wool protective agent, the pH value of the Sorona yarn disperse dye is 4.2-4.6, the dye temperature is 120-130°C, and the heat preservation time is 30-45min; then the wool is reduced and cleaned with 1-2g / L of acidic reducing cleaning agent at 80-85°C to remove the staining of the wool, and then washed again after cooling, and after washing, 0.1-0.2g / L of citric acid is added for 10min and the pH is adjusted, and then the yarn is taken out of the cylinder; S5, dehydration and opening: use a centrifugal dehydrator to dehydrate the fabric until the surface is 70% to 80% dry. After dehydration, use an opening machine to open the fabric, so that the fabric is opened from a rope shape and falls flat into the fabric car, and the dyed grey fabric is opened continuously; S6, drying cloth, the grey cloth after dehydration and opening is dried to ensure the cloth surface is flat, the drying and shaping temperature is 140-150℃, and the speed is 25-35m / min; S7, sanding: use a double planetary high-speed brushing machine with a carbon fiber sanding roller for sanding, the sanding speed is 15-20m / min, the rotation speed is 1400r / min, sanding is 2-4 times, so that the fabric surface is fluffy; S8, finished product shaping: the shaping temperature of the finished product is 140-150°C, the speed is 25-30m / min, 3-5% of high-concentration softener is added during the shaping process, and a stable width and thickness are obtained through the finished product shaping process, so that the suede surface of the finished product is uniform; S9. Finished product inspection: Carry out finished product quality inspection on the finished fabrics obtained. The finished product quality inspection includes measuring one or more of the width, weight, thickness, and length.

7. The method for preparing a bio-based warp-knitted wear-resistant wool fabric according to claim 6, characterized in that: The grey cloth is boiled before dyeing, and the water used for boiling contains additives, including 0.3-1 g / L of low-foam refining agent and 1-2 g / L of degreasing agent, and the water is run at 80-90° C. for 20-30 minutes.

8. The method for preparing a bio-based warp-knitted wear-resistant wool fabric according to claim 6, characterized in that: The step S4 adopts the double dyeing process of Sorona and wool. When dyeing, Sorona is dyed first and then wool. After Sorona dyeing is completed, wool needs to be cleaned before dyeing. After cleaning, wool is dyed. The dye used for wool dyeing adopts acid dye. The acid dye includes 0.8-1.5g / L of glacial acetic acid, adjusts the pH to 4.5-4.7, and 0.3-0.8g / L of acid leveling agent. The dyeing temperature of the acid dye is 90℃-100℃, and the heat preservation time is 30-50min. Then, 1-1.5g / L of color fixing agent is added, and the temperature is kept between 70 and 80℃ for 15-20min. Then, it is washed with hot water at 80-85℃ for 15-20min. The content of soaping agent in the hot water soap washing is 1-1.5g / L. After cooling, it is washed again with water. After washing, 0.1-0.2g / L of citric acid is added and operated for 10min to adjust the pH to 4-7, and then it is discharged from the cylinder.

9. The method for preparing a bio-based warp-knitted wear-resistant wool fabric according to claim 8, characterized in that: After the grey cloth is dyed with Sorona, 0.8-1.5 g / L of an acidic reducing agent is used for reduction cleaning.

10. The method for preparing a bio-based warp-knitted wear-resistant wool fabric according to claim 9, characterized in that: The shaping temperature of the finished product is 140-150° C., the speed is 25-30 m / min, and 3-5% of a moisture-absorbing quick-drying agent is added during the shaping process of the finished product.

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