Viscose fiber and nylon-covered ammonia blended knitted fabric and preparation process thereof

Abstract

The invention discloses a viscose fiber and chinlon-covered ammonia blended knitted fabric and a preparation process thereof, the formula comprises the following components in parts by weight: 30-35 parts of viscose fiber, 50-60 parts of chinlon-covered ammonia and 15-20 parts of tencel, and the viscose fiber and chinlon-covered ammonia blended knitted fabric comprises the following components in parts by weight: 30-35 parts of viscose fiber, 50-60 parts of chinlon-covered ammonia and 15-20 parts of tencel; according to the invention, the wear resistance of the fabric is enhanced by adding the wear-resistant finishing agent and chinlon together, the elasticity of the fabric is increased by spandex, and the service life of the fabric is prolonged; the antistatic agent is added in the blending process and after wear-resistant treatment of the fabric, and a thin conductive layer is formed on the surface of the material, so that the effect of eliminating static electricity is achieved, the static electricity generation and influence of the fabric can be effectively reduced, and the static electricity is prevented from hurting a user; in the shaping process of the knitted fabric, the shrinkage finishing agent is uniformly added and can be subjected to chemical reaction or physical adsorption with fabric fibers, so that the size of the fabric is fixed, shrinkage of the fabric can be effectively prevented, and the use experience of a user is improved.

Description

Technical Field

[0001] The invention relates to the technical field of viscose knitted fabrics, in particular to a viscose and brocade-wrapped spandex blended knitted fabric and a preparation process thereof. Background Art

[0002] Viscose knitted fabric is a knitted fabric made of viscose fiber. In addition to being used in clothing production, viscose knitted fabric is also widely used in home decoration, automotive interior and other fields. High-strength viscose fiber can also be used in industrial products such as tire cord and conveyor belts. However, the existing viscose knitted fabric still has shortcomings. First, the wear resistance and elasticity of the existing viscose knitted fabric are generally insufficient, which affects the service life of the fabric. Second, most of the existing viscose knitted fabrics cannot effectively remove static electricity when used and worn, which is easy to cause harm to users. Third, the existing viscose knitted fabric is easy to shrink after use and washing, which affects the user experience. Therefore, it is necessary to design a viscose and brocade-wrapped spandex blended knitted fabric and its preparation process. Summary of the invention

[0003] The object of the present invention is to provide a viscose and nylon-wrapped spandex blended knitted fabric and a preparation process thereof, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a viscose and brocade-wrapped spandex blended knitted fabric, the formula of which includes viscose, brocade-wrapped spandex and Tencel, and the weight proportions of the components are respectively: 30 to 35 parts of viscose, 50 to 60 parts of brocade-wrapped spandex and 15 to 20 parts of Tencel.

[0005] As a further technical solution of the present invention, the nylon-wrapped spandex is blended from nylon and spandex, and the composition ratio of nylon to spandex is 4:1, and the yarn count is 30-40s.

[0006] As a further technical solution of the present invention, the Tencel is formed by dissolving, spinning, stretching and shaping wood pulp, and the length of the Tencel fiber is about 38 mm and the fineness is 1.4 dtex.

[0007] A preparation process of viscose and brocade-wrapped spandex blended knitted fabric, comprising the following steps: step one, material preparation; step two, yarn blending; step three, knitting process; step four, post-processing; step five, quality inspection;

[0008] In the above step 1, raw materials are prepared according to the number of each component;

[0009] In the above step 2, the raw materials in step 1 are blended;

[0010] In the above step 3, the blended yarn in step 2 is knitted;

[0011] In the above step 4, the knitted fabric is subjected to performance treatment;

[0012] In the above step 5, the finished fabric is tested.

[0013] As a further technical solution of the present invention, in the step one, the raw materials are prepared according to the proportion of each component in the formula to ensure the accuracy of the formula, wherein the length of the viscose fiber is controlled at 38-42 mm, and the fineness is 1.5-2.0 dtex to ensure the strength and uniformity of the yarn, the nylon and spandex blending ratio of the nylon-wrapped spandex yarn is controlled at 4:1, and the length of the Tencel fiber is about 38 mm, and the fineness is 1.4 dtex.

[0014] As a further technical solution of the present invention, in the step 2, an efficient and stable blending machine is selected to blend the raw materials prepared in step 1 into yarns. During the blending process, the feeding speed and feeding amount of the raw materials are strictly controlled to ensure that the various raw materials are evenly mixed in the blending machine, the temperature and humidity of the blending machine are kept stable, and the raw materials are prevented from causing adverse changes due to environmental changes. The operating status of the blending machine and the quality of the blended yarn are regularly checked, and the blending parameters are adjusted in time to ensure the stability and consistency of the blended yarn. During the blending process, antistatic agents are evenly added by spraying, dipping or spraying. The antistatic agent can be quaternary ammonium salts, fatty acid salts, phosphates, etc. The amount of antistatic agent added is controlled between 0.3% and 0.5% of the total mass of the raw materials; the quality of the blended yarn is tested, including the strength, uniformity, elasticity and antistatic performance of the yarn. If the yarn quality does not meet the requirements, the blending parameters should be adjusted in time or the blending should be re-performed until the quality requirements are met. The blended yarn is relaxed by steam relaxation or natural relaxation, and the relaxed blended yarn is set by heat setting or chemical setting to fix the shape and size of the yarn.

[0015] As a further technical solution of the present invention, in the step three, according to the design requirements of the fabric, a circular knitting machine or a flat knitting machine is selected as a knitting device to knit the blended yarn in step two, and the needle pitch of the knitting device is adjusted to control the knitting density between 18-22 needles per inch to ensure that the blended yarn can be evenly distributed during the knitting process to form a stable coil structure; a tension controller or a tension sensor is used to monitor and adjust the yarn tension in real time, keeping it within ±5% to avoid problems such as uneven tightness and wrinkling of the fabric, and the needle bed speed is adjusted. According to the thickness of the blended yarn and the design requirements of the fabric, the knitting speed is reasonably controlled to improve production efficiency; after knitting, the appearance quality of the knitted fabric is inspected, including checking whether the fabric is flat, flawless, and has no color difference.

[0016] As a further technical solution of the present invention, in the step 4, the fabric knitted in the step 3 is first subjected to a shaping treatment, and the knitted fabric is sent to a shaping machine, and the temperature is controlled between 180 and 200° C. for high-temperature shaping, so that the fabric size is stable and the style is fixed. According to the material and thickness of the fabric, the shaping time is controlled between 1 and 3 minutes. During the shaping process, a shrinkage finishing agent is evenly added. The shrinkage finishing agent can be a resin-type, cross-linked or cross-linked-resin composite compound, and the added amount is 0.3% of the weight of the fabric; then the fabric is dyed by a dyeing machine, and an environmentally friendly dye compatible with Tencel fiber is selected to avoid negative impact on the performance of the fabric. The temperature is controlled between 60 and 80° C., and the time is controlled between 30 and 60 minutes. The dyeing temperature and time are adjusted according to the type of dye, fabric material and thickness.

[0017] As a further technical solution of the present invention, in the step 4, a softening machine is used to soften the dyed fabric, and a softener PF is added at 0.7% of the weight of the fabric, the treatment temperature is 40-50°C, and the time is controlled between 15 and 30 minutes, so as to further improve the feel and wearing comfort of the fabric; after dyeing and softening, a wear-resistant finishing agent is added for wear-resistant treatment, and the wear-resistant finishing agent can be a polyurethane, acrylate, epoxy resin and other compounds, the treatment temperature is 80-100°C, the time is controlled between 20 and 40 minutes, and the amount of the wear-resistant finishing agent added is 1.2% of the weight of the fabric to enhance the wear resistance of the fabric; then an antistatic agent is added again by spraying or dipping, the treatment temperature is room temperature, and the time is controlled between 5 and 10 minutes, and the final knitted fabric product is obtained after treatment.

[0018] As a further technical solution of the present invention, in the step five, the prepared knitted fabric is subjected to quality inspection, including indicators such as shrinkage, wear resistance, antistatic performance, and softness. The shrinkage test method is to wash and dry the fabric sample under certain temperature and humidity conditions, and then measure its dimensional change. The wear resistance test method is to use a wear tester to perform a friction test on the fabric sample, and record the damage of the fabric after a certain number of frictions. The antistatic test method is to use an electrostatic tester to test the fabric sample, and record the generation and dissipation of static electricity. After meeting the requirements, the product is put into storage and shipped.

[0019] Compared with the prior art, the invention has the following beneficial effects: the viscose and nylon-wrapped spandex blended knitted fabric and its preparation process use nylon-wrapped spandex as a component of the fabric, utilize the wear resistance of nylon, and after dyeing and softening treatment, add a wear-resistant finishing agent for wear-resistant treatment. The wear-resistant finishing agent can be a polyurethane, acrylate, epoxy resin and other compounds. These compounds can form a protective film on the surface of the fabric, and together with nylon, enhance the wear resistance of the fabric. The elasticity of the fabric is increased by spandex, and the service life of the fabric is improved. In the blending process, an antistatic agent is uniformly added by spraying, dipping or spraying. The antistatic agent can be a quaternary ammonium salt, a fatty acid salt, a phosphate ester, etc., and the fabric is sprayed again after the wear-resistant treatment. Antistatic agent is added by coating or dipping. When the antistatic agent solution is impregnated into the knitted fabric, the lipophilic group of the antistatic agent will adhere to the surface of the material, while the hydrophilic group absorbs moisture from the air to form a thin conductive layer on the surface of the material. This conductive layer can allow static charge to leak in time, thereby eliminating static electricity. The addition of antistatic agent twice can effectively reduce the generation and impact of static electricity on the fabric and prevent static electricity from harming the user. During the shaping process of the knitted fabric, the shrinkage finishing agent is evenly added. The shrinkage finishing agent can be a resin type, a cross-linked type or a cross-linked / resin composite compound. These compounds can chemically react or physically adsorb with the fabric fibers to fix the size of the fabric, which can effectively prevent the shrinkage of the fabric and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a flow chart of the method. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please refer to the attached Figure 1 , the present invention provides a technical solution:

[0023] Embodiment 1:

[0024] A viscose and nylon-wrapped spandex blended knitted fabric, comprising viscose, nylon-wrapped spandex and tencel, wherein the weight proportions of the components are respectively 30-35 parts of viscose, 50-60 parts of nylon-wrapped spandex and 15-20 parts of tencel; the nylon-wrapped spandex is blended with nylon and spandex, and the composition ratio of nylon to spandex is 4:1; the yarn count is 30-40s; the tencel is formed by dissolving, spinning, stretching and shaping wood pulp; the length of the tencel fiber is about 38mm, and the fineness is 1.4dtex.

[0025] A preparation process of viscose and brocade-wrapped spandex blended knitted fabric, comprising the following steps: step one, material preparation; step two, yarn blending; step three, knitting process; step four, post-processing; step five, quality inspection;

[0026] In the above step 1, raw materials are prepared according to the number of each component, and each raw material is prepared according to the proportion of each component in the formula to ensure the accuracy of the formula, wherein the length of the viscose fiber is controlled to be 38-42 mm, and the fineness is 1.5-2.0 dtex to ensure the strength and uniformity of the yarn, the nylon and spandex blending ratio of the nylon-wrapped spandex yarn is controlled to be 4:1, and the length of the tencel fiber is about 38 mm, and the fineness is 1.4 dtex;

[0027] In the above step 2, the raw materials in step 1 are blended, and an efficient and stable blending machine is selected to blend the raw materials prepared in step 1 into yarn. During the blending process, the feeding speed and feeding amount of the raw materials are strictly controlled to ensure that the various raw materials are evenly mixed in the blending machine, and the temperature and humidity of the blending machine are kept stable to avoid adverse changes in the raw materials due to environmental changes. The operating status of the blending machine and the quality of the blended yarn are regularly checked, and the blending parameters are adjusted in time to ensure the stability and consistency of the blended yarn. During the blending process, antistatic agents are evenly added by spraying, dipping or spraying. Antistatic agents can be quaternary ammonium salts, fatty acid salts, phosphates, etc., and the amount of antistatic agents added is controlled between 0.3% and 0.6% of the total mass of the raw materials; the quality of the blended yarn is tested, including the strength, uniformity, elasticity and antistatic performance of the yarn. If the yarn quality does not meet the requirements, the blending parameters should be adjusted in time or the blending should be re-performed until the quality requirements are met. The blended yarn is relaxed by steam relaxation or natural relaxation, and the relaxed blended yarn is set by heat setting or chemical setting to fix the shape and size of the yarn;

[0028] In the above step 3, the blended yarn in step 2 is knitted, and according to the design requirements of the fabric, a circular knitting machine or a flat knitting machine is selected as the knitting equipment to knit the blended yarn in step 2, and the needle pitch of the knitting equipment is adjusted to control the knitting density between 18 and 22 needles per inch to ensure that the blended yarn can be evenly distributed during the knitting process to form a stable coil structure; a tension controller or a tension sensor is used to monitor and adjust the yarn tension in real time, and keep it within ±5% to avoid problems such as uneven tightness and wrinkling of the fabric, and the needle bed speed is adjusted. According to the thickness of the blended yarn and the design requirements of the fabric, the knitting speed is reasonably controlled to improve production efficiency; after knitting, the appearance quality of the knitted fabric is inspected, including whether the fabric is flat, flawless, and has no color difference;

[0029] In the above step 4, the knitted fabric is subjected to performance treatment, and the knitted fabric in step 3 is first subjected to shaping treatment, and the knitted fabric is sent to a shaping machine, and the temperature is controlled between 180 and 200°C for high-temperature shaping, so that the fabric size is stable and the style is fixed. According to the material and thickness of the fabric, the shaping time is controlled between 1 and 3 minutes. During the shaping process, a shrinkage finishing agent is evenly added. The shrinkage finishing agent can be a resin-type, cross-linked or cross-linked-resin composite compound, and the added amount is 0.35% of the weight of the fabric; then the fabric is dyed by a dyeing machine, and an environmentally friendly dye compatible with Tencel fiber is selected to avoid negative impact on the fabric performance. The temperature is controlled between 60 and 80°C, and the time is controlled between 30 and 60 minutes. The dyeing temperature and time are controlled according to the type of dye, surface The material and thickness of the fabric are adjusted, and the dyed fabric is softened using a softening machine. Softener PF is added at 0.7% of the weight of the fabric, the treatment temperature is 40-50°C, and the time is controlled between 15 and 30 minutes to further improve the feel and wearing comfort of the fabric; after dyeing and softening, a wear-resistant finishing agent is added for wear-resistant treatment. The wear-resistant finishing agent can be a polyurethane, acrylate, epoxy resin and other compounds. The treatment temperature is 80-100°C, the time is controlled between 20 and 40 minutes, and the amount of wear-resistant finishing agent added is 1.2% of the weight of the fabric to enhance the wear resistance of the fabric; then an antistatic agent is added again by spraying or dipping, the treatment temperature is room temperature, and the time is controlled between 5 and 10 minutes. After treatment, the final knitted fabric product is obtained;

[0030] In the above step five, the finished fabric is tested, and the prepared knitted fabric is quality inspected, including indicators such as shrinkage, wear resistance, antistatic performance, and softness. The shrinkage test method is to wash and dry the fabric sample under certain temperature and humidity conditions, and then measure its dimensional change. The wear resistance test method is to use a wear tester to perform a friction test on the fabric sample, and record the damage of the fabric after a certain number of frictions. The antistatic test method is to use an electrostatic tester to test the fabric sample, and record the generation and dissipation of static electricity. After meeting the requirements, the product is put into storage and shipped.

[0031] Embodiment 2:

[0032] A viscose and nylon-wrapped spandex blended knitted fabric, comprising viscose, nylon-wrapped spandex and tencel, wherein the weight proportions of the components are respectively 30-35 parts of viscose, 50-60 parts of nylon-wrapped spandex and 15-20 parts of tencel; the nylon-wrapped spandex is blended with nylon and spandex, and the composition ratio of nylon to spandex is 4:1; the yarn count is 30-40s; the tencel is formed by dissolving, spinning, stretching and shaping wood pulp; the length of the tencel fiber is about 38mm, and the fineness is 1.4dtex.

[0033] A preparation process of viscose and brocade-wrapped spandex blended knitted fabric, comprising the following steps: step one, material preparation; step two, yarn blending; step three, knitting process; step four, post-processing; step five, quality inspection;

[0034] In the above step 1, raw materials are prepared according to the number of each component, and each raw material is prepared according to the proportion of each component in the formula to ensure the accuracy of the formula, wherein the length of the viscose fiber is controlled to be 38-42 mm, and the fineness is 1.5-2.0 dtex to ensure the strength and uniformity of the yarn, the nylon and spandex blending ratio of the nylon-wrapped spandex yarn is controlled to be 4:1, and the length of the tencel fiber is about 38 mm, and the fineness is 1.4 dtex;

[0035] In the above step 2, the raw materials in step 1 are blended, and an efficient and stable blending machine is selected to blend the raw materials prepared in step 1 into yarn. During the blending process, the feeding speed and feeding amount of the raw materials are strictly controlled to ensure that the various raw materials are evenly mixed in the blending machine, and the temperature and humidity of the blending machine are kept stable to avoid adverse changes in the raw materials due to environmental changes. The operating status of the blending machine and the quality of the blended yarn are regularly checked, and the blending parameters are adjusted in time to ensure the stability and consistency of the blended yarn. During the blending process, antistatic agents are evenly added by spraying, dipping or spraying. Antistatic agents can be quaternary ammonium salts, fatty acid salts, phosphates, etc., and the amount of antistatic agents added is controlled between 0.3% and 0.5% of the total mass of the raw materials; the quality of the blended yarn is tested, including the strength, uniformity, elasticity and antistatic performance of the yarn. If the yarn quality does not meet the requirements, the blending parameters should be adjusted in time or the blending should be re-performed until the quality requirements are met. The blended yarn is relaxed by steam relaxation or natural relaxation, and the relaxed blended yarn is set by heat setting or chemical setting to fix the shape and size of the yarn;

[0036] In the above step 3, the blended yarn in step 2 is knitted, and according to the design requirements of the fabric, a circular knitting machine or a flat knitting machine is selected as the knitting equipment to knit the blended yarn in step 2, and the needle pitch of the knitting equipment is adjusted to control the knitting density between 18 and 22 needles per inch to ensure that the blended yarn can be evenly distributed during the knitting process to form a stable coil structure; a tension controller or a tension sensor is used to monitor and adjust the yarn tension in real time, and keep it within ±5% to avoid problems such as uneven tightness and wrinkling of the fabric, and the needle bed speed is adjusted. According to the thickness of the blended yarn and the design requirements of the fabric, the knitting speed is reasonably controlled to improve production efficiency; after knitting, the appearance quality of the knitted fabric is inspected, including whether the fabric is flat, flawless, and has no color difference;

[0037] In the above step 4, the knitted fabric is subjected to performance treatment, and the knitted fabric in step 3 is first subjected to shaping treatment, and the knitted fabric is sent to a shaping machine, and the temperature is controlled between 180 and 200°C for high-temperature shaping, so that the fabric size is stable and the style is fixed. According to the material and thickness of the fabric, the shaping time is controlled between 1 and 3 minutes. During the shaping process, a shrinkage finishing agent is evenly added. The shrinkage finishing agent can be a resin-type, cross-linked or cross-linked-resin composite compound, and the added amount is 0.3% of the weight of the fabric; then the fabric is dyed by a dyeing machine, and an environmentally friendly dye compatible with Tencel fiber is selected to avoid negative impact on the performance of the fabric. The temperature is controlled between 60 and 80°C, and the time is controlled between 30 and 60 minutes. The dyeing temperature and time are adjusted according to the type of dye, the surface The material and thickness of the fabric are adjusted, and the dyed fabric is softened using a softening machine. Softener PF is added at 0.7% of the weight of the fabric, the treatment temperature is 40-50°C, and the time is controlled between 15 and 30 minutes to further improve the feel and wearing comfort of the fabric; after dyeing and softening, a wear-resistant finishing agent is added for wear-resistant treatment. The wear-resistant finishing agent can be a compound such as polyurethane, acrylate, epoxy resin, etc. The treatment temperature is 80-100°C, the time is controlled between 20 and 40 minutes, and the amount of wear-resistant finishing agent added is 1.4% of the weight of the fabric to enhance the wear resistance of the fabric; then an antistatic agent is added again by spraying or dipping, the treatment temperature is room temperature, and the time is controlled between 5 and 10 minutes, and the final knitted fabric product is obtained after treatment;

[0038] In the above step five, the finished fabric is tested, and the prepared knitted fabric is quality inspected, including indicators such as shrinkage, wear resistance, antistatic performance, and softness. The shrinkage test method is to wash and dry the fabric sample under certain temperature and humidity conditions, and then measure its dimensional change. The wear resistance test method is to use a wear tester to perform a friction test on the fabric sample, and record the damage of the fabric after a certain number of frictions. The antistatic test method is to use an electrostatic tester to test the fabric sample, and record the generation and dissipation of static electricity. After meeting the requirements, the product is put into storage and shipped.

[0039] Embodiment 3:

[0040] A viscose and nylon-wrapped spandex blended knitted fabric, comprising viscose, nylon-wrapped spandex and tencel, wherein the weight proportions of the components are respectively 30-35 parts of viscose, 50-60 parts of nylon-wrapped spandex and 15-20 parts of tencel; the nylon-wrapped spandex is blended with nylon and spandex, and the composition ratio of nylon to spandex is 4:1; the yarn count is 30-40s; the tencel is formed by dissolving, spinning, stretching and shaping wood pulp; the length of the tencel fiber is about 38mm, and the fineness is 1.4dtex.

[0041] A preparation process of viscose and brocade-wrapped spandex blended knitted fabric, comprising the following steps: step one, material preparation; step two, yarn blending; step three, knitting process; step four, post-processing; step five, quality inspection;

[0042] In the above step 1, raw materials are prepared according to the number of each component, and each raw material is prepared according to the proportion of each component in the formula to ensure the accuracy of the formula, wherein the length of the viscose fiber is controlled to be 38-42 mm, and the fineness is 1.5-2.0 dtex to ensure the strength and uniformity of the yarn, the nylon and spandex blending ratio of the nylon-wrapped spandex yarn is controlled to be 4:1, and the length of the tencel fiber is about 38 mm, and the fineness is 1.4 dtex;

[0043] In the above step 2, the raw materials in step 1 are blended, and an efficient and stable blending machine is selected to blend the raw materials prepared in step 1 into yarn. During the blending process, the feeding speed and feeding amount of the raw materials are strictly controlled to ensure that the various raw materials are evenly mixed in the blending machine, and the temperature and humidity of the blending machine are kept stable to avoid adverse changes in the raw materials due to environmental changes. The operating status of the blending machine and the quality of the blended yarn are regularly checked, and the blending parameters are adjusted in time to ensure the stability and consistency of the blended yarn. During the blending process, antistatic agents are evenly added by spraying, dipping or spraying. Antistatic agents can be quaternary ammonium salts, fatty acid salts, phosphates, etc., and the amount of antistatic agents added is controlled between 0.4% and 0.6% of the total mass of the raw materials; the quality of the blended yarn is tested, including the strength, uniformity, elasticity and antistatic performance of the yarn. If the yarn quality does not meet the requirements, the blending parameters should be adjusted in time or the blending should be re-performed until the quality requirements are met. The blended yarn is relaxed by steam relaxation or natural relaxation, and the relaxed blended yarn is set by heat setting or chemical setting to fix the shape and size of the yarn;

[0044] In the above step 3, the blended yarn in step 2 is knitted, and according to the design requirements of the fabric, a circular knitting machine or a flat knitting machine is selected as the knitting equipment to knit the blended yarn in step 2, and the needle pitch of the knitting equipment is adjusted to control the knitting density between 18 and 22 needles per inch to ensure that the blended yarn can be evenly distributed during the knitting process to form a stable coil structure; a tension controller or a tension sensor is used to monitor and adjust the yarn tension in real time, and keep it within ±5% to avoid problems such as uneven tightness and wrinkling of the fabric, and the needle bed speed is adjusted. According to the thickness of the blended yarn and the design requirements of the fabric, the knitting speed is reasonably controlled to improve production efficiency; after knitting, the appearance quality of the knitted fabric is inspected, including whether the fabric is flat, flawless, and has no color difference;

[0045] In the above step 4, the knitted fabric is subjected to performance treatment, and the knitted fabric in step 3 is first subjected to shaping treatment, and the knitted fabric is sent to a shaping machine, and the temperature is controlled between 180 and 200°C for high-temperature shaping, so that the fabric size is stable and the style is fixed. According to the material and thickness of the fabric, the shaping time is controlled between 1 and 3 minutes. During the shaping process, a shrinkage finishing agent is evenly added. The shrinkage finishing agent can be a resin-type, cross-linked or cross-linked-resin composite compound, and the added amount is 0.4% of the weight of the fabric; then the fabric is dyed by a dyeing machine, and an environmentally friendly dye compatible with Tencel fiber is selected to avoid negative impact on the fabric performance. The temperature is controlled between 60 and 80°C, and the time is controlled between 30 and 60 minutes. The dyeing temperature and time are controlled according to the type of dye, surface The material and thickness of the fabric are adjusted, and the dyed fabric is softened using a softening machine. Softener PF is added at 0.7% of the weight of the fabric, the treatment temperature is 40-50°C, and the time is controlled between 15 and 30 minutes to further improve the feel and wearing comfort of the fabric; after dyeing and softening, a wear-resistant finishing agent is added for wear-resistant treatment. The wear-resistant finishing agent can be a compound such as polyurethane, acrylate, epoxy resin, etc. The treatment temperature is 80-100°C, the time is controlled between 20 and 40 minutes, and the amount of wear-resistant finishing agent added is 1.3% of the weight of the fabric to enhance the wear resistance of the fabric; then an antistatic agent is added again by spraying or dipping, the treatment temperature is room temperature, and the time is controlled between 5 and 10 minutes, and the final knitted fabric product is obtained after treatment;

[0046] In the above step five, the finished fabric is tested, and the prepared knitted fabric is quality inspected, including indicators such as shrinkage, wear resistance, antistatic performance, and softness. The shrinkage test method is to wash and dry the fabric sample under certain temperature and humidity conditions, and then measure its dimensional change. The wear resistance test method is to use a wear tester to perform a friction test on the fabric sample, and record the damage of the fabric after a certain number of frictions. The antistatic test method is to use an electrostatic tester to test the fabric sample, and record the generation and dissipation of static electricity. After meeting the requirements, the product is put into storage and shipped.

[0047] The viscose and brocade-wrapped spandex blended knitted fabrics obtained in the above examples were tested for performance and compared with ordinary viscose knitted fabrics on the market. The results are shown in the following table:

[0048]

[0049]

[0050] Based on the above, the advantages of the present invention are that, by using nylon-wrapped ammonia as a component of the fabric, the wear resistance of nylon is utilized, and after dyeing and softening treatment, a wear-resistant finishing agent is added for wear-resistant treatment. The wear-resistant finishing agent can be a compound such as polyurethane, acrylate, epoxy resin, etc. These compounds can form a protective film on the surface of the fabric, and together with nylon, the wear resistance of the fabric is enhanced. The elasticity of the fabric is increased by spandex, and the service life of the fabric is improved; during the blending process, an antistatic agent is uniformly added by spraying, dipping or spraying, and the antistatic agent can be a quaternary ammonium salt, a fatty acid salt, a phosphate, etc., and the antistatic agent is added again by spraying or dipping after the fabric is wear-resistant treated. When the antistatic agent solution is impregnated into the knitted fabric, the lipophilic group of the antistatic agent will adhere to the surface of the material, while the hydrophilic group will absorb moisture from the air to form a thin conductive layer on the surface of the material. This conductive layer can allow static charge to leak in time, thereby eliminating static electricity. The addition of two antistatic agents can effectively reduce the generation and impact of static electricity on the fabric and prevent static electricity from harming the user. During the shaping process of the knitted fabric, the shrinkage finishing agent is evenly added. The shrinkage finishing agent can be a resin type, a cross-linked type, or a cross-linked / resin composite compound. These compounds can chemically react or physically adsorb with the fabric fibers to fix the size of the fabric, which can effectively prevent the shrinkage of the fabric and improve the user experience.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A viscose and brocade-wrapped spandex blended knitted fabric, the formula of which includes viscose, brocade-wrapped spandex and Tencel, characterized in that: The weight proportions of the components are: 30-35 parts of viscose, 50-60 parts of nylon-wrapped ammonia and 15-20 parts of tencel.

2. The viscose and brocade-wrapped spandex blended knitted fabric according to claim 1, characterized in that: The nylon-wrapped spandex is blended from nylon and spandex, and the composition ratio of nylon to spandex is 4:1, and the yarn count is 30-40s.

3. The viscose and brocade-wrapped spandex blended knitted fabric according to claim 1, characterized in that: The Tencel is formed by dissolving, spinning, stretching and shaping wood pulp, and the length of the Tencel fiber is about 38 mm and the fineness is 1.4 dtex.

4. A process for preparing a viscose and brocade-wrapped spandex blended knitted fabric, comprising the following steps: Step 1, material preparation; Step 2, yarn blending; Step 3, knitting process; Step 4, post-processing; Step 5, quality inspection; It is characterized by: In the above step 1, raw materials are prepared according to the number of each component; In the above step 2, the raw materials in step 1 are blended; In the above step 3, the blended yarn in step 2 is knitted; In the above step 4, the knitted fabric is subjected to performance treatment; In the above step 5, the finished fabric is tested.

5. The process for preparing a viscose and brocade-wrapped spandex blended knitted fabric according to claim 4, characterized in that: In the step 1, the raw materials are prepared according to the proportion of each component in the formula to ensure the accuracy of the formula, wherein the length of the viscose fiber is controlled at 38-42 mm and the fineness is 1.5-2.0 dtex to ensure the strength and uniformity of the yarn, the nylon and spandex blending ratio of the nylon-wrapped spandex yarn is controlled at 4:1, and the length of the Tencel fiber is about 38 mm and the fineness is 1.4 dtex.

6. The process for preparing a viscose and brocade-wrapped spandex blended knitted fabric according to claim 4, characterized in that: In the step 2, an efficient and stable blending machine is selected to blend the raw materials prepared in the step 1 with yarns. During the blending process, the feeding speed and feeding amount of the raw materials are strictly controlled to ensure that the various raw materials are evenly mixed in the blending machine, the temperature and humidity of the blending machine are kept stable, and the raw materials are prevented from adversely changing due to environmental changes. The operating status of the blending machine and the quality of the blended yarn are regularly checked, and the blending parameters are adjusted in time to ensure the stability and consistency of the blended yarn. During the blending process, an antistatic agent is evenly added by spraying, dipping or spraying, and the antistatic agent can be a quaternary ammonium Salts, fatty acid salts, phosphates, etc. The amount of antistatic agent added is controlled between 0.3% and 0.5% of the total mass of the raw materials; the quality of the blended yarn is tested, including the strength, uniformity, elasticity and antistatic performance of the yarn. If the yarn quality does not meet the requirements, the blending parameters should be adjusted in time or the blending should be re-performed until the quality requirements are met. The blended yarn is relaxed by steam relaxation or natural relaxation, and the relaxed blended yarn is set by heat setting or chemical setting to fix the shape and size of the yarn.

7. The process for preparing a viscose and brocade-wrapped spandex blended knitted fabric according to claim 4, characterized in that: In the step three, according to the design requirements of the fabric, a circular knitting machine or a flat knitting machine is selected as a knitting device to knit the blended yarn in step two, and the needle pitch of the knitting device is adjusted to control the knitting density between 18 and 22 needles per inch to ensure that the blended yarn can be evenly distributed during the knitting process to form a stable coil structure; a tension controller or a tension sensor is used to monitor and adjust the yarn tension in real time and keep it within ±5% to avoid problems such as uneven tightness and wrinkling of the fabric, and the needle bed speed is adjusted. According to the thickness of the blended yarn and the design requirements of the fabric, the knitting speed is reasonably controlled to improve production efficiency; after knitting, the appearance quality of the knitted fabric is inspected, including checking whether the fabric is flat, flawless, and has no color difference.

8. The process for preparing a viscose and brocade-wrapped spandex blended knitted fabric according to claim 4, characterized in that: In the step 4, the fabric knitted in the step 3 is first subjected to a shaping treatment, and the knitted fabric is sent to a shaping machine, and the temperature is controlled between 180 and 200° C. for high-temperature shaping, so that the fabric size is stable and the style is fixed. According to the material and thickness of the fabric, the shaping time is controlled between 1 and 3 minutes. During the shaping process, a shrinkage finishing agent is evenly added. The shrinkage finishing agent can be a resin-type, cross-linked or cross-linked / resin composite compound, and the added amount is 0.3% of the weight of the fabric; then the fabric is dyed by a dyeing machine, and an environmentally friendly dye compatible with Tencel fiber is selected to avoid negative impact on the performance of the fabric. The temperature is controlled between 60 and 80° C., and the time is controlled between 30 and 60 minutes. The dyeing temperature and time are adjusted according to the type of dye, the material and thickness of the fabric.

9. The process for preparing a viscose and brocade-wrapped spandex blended knitted fabric according to claim 4, characterized in that: In the step 4, a softening treatment machine is used to soften the dyed fabric, and a softener PF is added at 0.7% of the weight of the fabric, the treatment temperature is 40-50° C., and the time is controlled between 15 and 30 minutes, so as to further improve the feel and wearing comfort of the fabric; after dyeing and softening treatment, a wear-resistant finishing agent is added for wear-resistant treatment, and the wear-resistant finishing agent can be a compound such as polyurethane, acrylate, epoxy resin, etc., the treatment temperature is 80-100° C., the time is controlled between 20 and 40 minutes, and the amount of the wear-resistant finishing agent added is 1.2% of the weight of the fabric to enhance the wear resistance of the fabric; Then, the antistatic agent is added again by spraying or dipping, the treatment temperature is room temperature, and the time is controlled between 5 and 10 minutes. After the treatment, the final knitted fabric product is obtained.

10. The process for preparing a viscose and nylon-wrapped spandex blended knitted fabric according to claim 4, characterized in that: In the step five, the prepared knitted fabric is subjected to quality inspection, including indicators such as shrinkage, wear resistance, antistatic performance, and softness. The shrinkage test method is to wash and dry the fabric sample under certain temperature and humidity conditions, and then measure its dimensional change. The wear resistance test method is to use a wear tester to perform a friction test on the fabric sample, and record the damage of the fabric after a certain number of frictions. The antistatic test method is to use an electrostatic tester to test the fabric sample, and record its static electricity generation and dissipation. After meeting the requirements, the product is put into storage and shipped.

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