Process for knitting multi-color and multi-layer jacquard fabric through double-needle-bar warp knitting machine and fabric

Abstract

The invention belongs to the technical field of textile fabric treatment, and particularly relates to a process for knitting a multi-color and multi-layer jacquard fabric through a double-needle-bar warp knitting machine and the fabric, and the process comprises the following steps: S1, preparing composite yarns and jacquard electronic patterns with different colors, and guiding the composite yarns and the jacquard electronic patterns into a jacquard machine; s2, the composite yarn is loaded into a jacquard machine, and four jacquard guide bars are used for knitting; s3, cutting the edge of the fabric by using a laser edge trimmer, and adjusting the edge to a set size; four separated jacquard guide bars are adopted for knitting, a three-layer structure is formed, patterns can be designed on the two faces, and stability and high ornamental value are achieved. The composite yarn is used in the fabric, the silver fiber core layer has good antibacterial activity and thermal conductivity, the heat conduction efficiency is improved, and the wearing experience is improved. Various sections of the composite yarn are combined with pattern weaving, rich visual effects are presented, and the ornamental value is enhanced. Through dyeing, softening and smoothing treatment, the surface of the fabric is smooth and soft, and the wearing comfort is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of textile processing, and in particular relates to a process for knitting multi-color and multi-layer jacquard fabrics by a double-needle bed warp knitting machine and the fabrics. Background Art

[0002] Warp knitting jacquard is a kind of knitted fabric pattern, which is formed by knitting yarn into loops on the knitting needles selected according to the pattern requirements. This kind of structure can be formed in single-sided or double-sided knitted fabrics. The fabric pattern is larger and the pattern is more complicated, such as brocade, satin, silk portraits, silk landscapes and jacquard quilts. Warp knitting jacquard seamless fabric is a one-time forming fabric produced by a special double needle bed jacquard warp knitting machine. It uses high-tech seamless processing technology, from yarn to finished garment, without cutting and sewing, so that the neck, waist, hips and other parts do not need seams, and it is comfortable, considerate, fashionable and changeable. For heating and thermal insulation items that need to come into contact with the human body, such as electric blankets, heating belts, heating masks, and sleeping bags, traditional fabric materials have a slow heat conduction rate and are prone to uneven heat conduction, which affects comfort. In addition, traditional fabrics will lose stability when exposed to high temperature environments for a long time, and are prone to frizzing, breaking, etc., which affects the fabric's appearance and life.

[0003] In order to solve the above problems, the present application proposes a process and fabric for knitting multi-color and multi-layer jacquard fabrics using a double needle bed warp knitting machine. Summary of the invention

[0004] To solve the problems raised in the above background technology, the present invention provides a process and fabric for knitting multi-color and multi-layer jacquard fabrics with a double needle bed warp knitting machine, which has the characteristics of improving the comfort and ornamental properties of the fabric and fast and uniform heat conduction.

[0005] To achieve the above object, the present invention provides the following technical solution: A process for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine, comprising the following steps: S1. Preparation work, preparation of composite yarns of different colors, preparation of electronic jacquard patterns, and importing pattern data into the jacquard machine; S2. The composite yarn is loaded into a jacquard machine, which uses four separate jacquard bars for weaving. The first jacquard bar is used to weave the bottom tissue, the second and third jacquard bars are used to weave the front and rear needle beds, respectively, and the fourth jacquard bar is used to weave the jacquard pattern. S3. Use a laser trimmer to melt and trim the edges of the fabric and cut the fabric into the set size; S4. Finishing of finished products.

[0006] As a preferred process for weaving multi-color and multi-layer jacquard fabrics with a double needle bed warp knitting machine of the present invention, the composite yarn in S1 is blended by silver fiber, plastic fiber, carbon fiber and surface thread, the silver fiber and the plastic fiber are arranged in parallel, the plastic fiber is filled in the gaps between the silver fibers, a number of carbon fibers are evenly arranged on the outside of the silver fiber and the plastic fiber, the carbon fiber is arranged parallel to the silver fiber, and the outside of the carbon fiber is covered with an interlaced woven surface thread.

[0007] As a preferred process for knitting a multi-color and multi-layer jacquard fabric by a double needle bed warp knitting machine of the present invention, the dyeing process for preparing the composite yarn is: a. Soak the surface line in reactive dyes, bath ratio 1:5, pH value between 10.5-11.5, temperature 60℃, immersion time 20-40min; b. Add alkali to fix the color. Add 2g / L of the alkali substitute to the dye at a temperature of 45°C and a fixing time of 60min. c. After the fixation is completed, adjust the pH value to neutral, let the dye solution temperature stand to room temperature, take out the surface thread, soak it in clean water to remove excess dye; d. Cellulase washing, pH 5.5-6.5, temperature 25-35°C, smoothing treatment; e. Heating treatment: heating to 60°C for 30 minutes to inactivate cellulase; f. Anti-oxidation cleaning, using potassium permanganate for immersion and antioxidant treatment; g. Remove the surface line, wash it three times with cold water, and then dry it.

[0008] As a preferred process for knitting multi-color and multi-layer jacquard fabrics using a double needle bed warp knitting machine according to the present invention, the surface yarn is a blend of cotton fiber and linen fiber.

[0009] As a preferred process for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine of the present invention, the plastic fiber is a polyurethane fiber.

[0010] As a preferred process for weaving multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine of the present invention, the composite yarn is softened after blending, and the specific process is: immersing the composite yarn in a softener, adding acetic acid, controlling the pH value between 5-6, controlling the temperature at 40°C, soaking for 5-10 minutes, and then taking out the composite yarn, rinsing and drying.

[0011] As a preferred process for knitting multi-color and multi-layer jacquard fabrics with a double needle bed warp knitting machine of the present invention, a jacquard machine is used, and the jacquard machine includes four jacquard bars, groove needles, needle cores, and knock-over plates.

[0012] The fabric preferably manufactured by the multi-color and multi-layer jacquard process of the double needle bed warp knitting machine of the present invention includes a bottom layer, a front layer, a back layer, and a trimming edge. The bottom layer is a plain weave, and the warp and weft of the fabric are both made of composite yarns.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Three-layer structure and design flexibility: The present invention uses four separate jacquard bars for weaving, and the finished fabric has a three-layer structure. This structure not only ensures the stability of the fabric, but also allows for unique flower-shaped designs on both sides, greatly improving the ornamental value of the fabric and meeting the market's demand for beauty and diversity.

[0014] 2. Excellent thermal conductivity: The fabric uses composite yarn, in which the silver fiber core layer has excellent antibacterial and thermal conductivity. This enables the fabric to effectively improve thermal conductivity when used in heating products, ensuring rapid and even heat transfer, thereby significantly improving the user's wearing experience.

[0015] 3. Rich visual effects: The composite yarn of the present invention is designed with various cross-section shapes, combined with various weaving patterns, which can present rich visual effects. This not only increases the ornamental value of the fabric, but also provides designers with a larger creative space, enabling them to adapt to the needs of different styles and occasions and meet consumers' pursuit of personalization and fashion.

[0016] 4. Excellent comfort and elasticity: After multiple processes such as dyeing, softening and smoothing, the surface of the fabric is smooth and soft, which significantly improves the comfort of wearing. In addition, the added plastic fiber not only enhances the elasticity and toughness of the fabric, but also ensures its durability in daily wear, so that users have a better experience during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a front structural schematic diagram of a double needle bed warp knitting machine knitting a multi-color and multi-layer jacquard fabric in the present invention; Figure 2 It is a rear view structural schematic diagram of a double needle bed warp knitting machine knitting a multi-color and multi-layer jacquard fabric in the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of a composite yarn in a multi-color and multi-layer jacquard fabric woven by a double needle bed warp knitting machine in the present invention; Figure 4 It is a schematic diagram of the side view structure of the composite yarn in the present invention; Figure 5Schematic diagram of the multi-section structure of the composite yarn of the present invention; In the figure: 1, fabric; 11, bottom layer; 12, front layer; 13, back layer; 14, edge; 2, composite yarn; 21, silver fiber; 22, plastic fiber; 23, carbon fiber; 24, surface line. DETAILED DESCRIPTION

[0018] 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.

[0019] Example 1 like Figures 1 to 5 As shown; A process and fabric for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine, comprising the following steps: S1 preparation work, preparation of composite yarns of different colors 2, preparation of electronic jacquard pattern, and importing the pattern data into the jacquard machine; S2. The composite yarn 2 is loaded into the jacquard machine, which uses four separate jacquard bars for weaving. The first jacquard bar is used to weave the bottom tissue, and the second and third jacquard bars are used to weave the front and rear needle beds, respectively. The fourth jacquard bar is used to weave the jacquard pattern. S3. Use a laser trimmer to melt and cut the edge of fabric 1 and cut fabric 1 into a set size; S4. Finishing of finished products.

[0020] In this embodiment: the fabric 1 of the present invention is woven and manufactured using an advanced jacquard machine, which is equipped with four jacquard bars, which can work together to achieve an efficient and fine weaving process. Through the synchronous operation of the four bars, the composite yarn 2 is cleverly woven into the fabric 1, giving it a unique texture and structure, so that the fabric 1 has good expressiveness, and after weaving, it is cut by laser cutting to ensure accurate cutting and keep the cut surface neat.

[0021] More specifically: In an optional embodiment, the composite yarn 2 in S1 is blended by silver fibers 21, plastic fibers 22, carbon fibers 23 and surface threads 24. The silver fibers 21 and the plastic fibers 22 are arranged in parallel, and the plastic fibers 22 fill the gaps in the silver fibers 21. A number of carbon fibers 23 are evenly arranged on the outside of the silver fibers 21 and the plastic fibers 22. The carbon fibers 23 are arranged parallel to the silver fibers 21, and the outside of the carbon fibers 23 is provided with an interlaced woven surface thread 24.

[0022] In this embodiment: the composite yarn 2 of the present invention uses silver fiber 21 and plastic fiber 22 as the core layer, carbon fiber 23 as the middle layer, and surface yarn 24 as the outer layer, forming a composite material structure with both functions and excellent performance. Specifically, the silver fiber 21 has extremely high thermal conductivity and can quickly conduct heat to the surface of the fabric 1 to ensure uniform heat distribution. At the same time, its excellent antibacterial properties can effectively inhibit the generation of bacteria and odors, which enables users to enjoy a more comfortable and hygienic wearing experience when applied to heating products. The carbon fiber 23 improves the durability of the fabric 1 of the present invention with its excellent strength, compared with the traditional Fiber material, carbon fiber 23 has better tensile strength and impact resistance, thereby extending the service life of fabric 1. At the same time, the surface line 24 is dyed and combined with the double-sided jacquard process, so that the fabric 1 visually presents a more complex and rich pattern design, which enhances its ornamental and fashion sense, and provides users with a more personalized choice. In addition, the surface line 24 adopts an interlaced weaving method to tightly combine the middle layer carbon fiber 23 with the core layer silver fiber 21 and plastic fiber 22. This structural design effectively avoids the dispersion or dislocation of the middle layer and the core layer during use, thereby ensuring the stability and integrity of the fabric 1 during use.

[0023] It should be noted that: according to the design of the present invention, the silver fiber 21 accounts for 1 / 3 of the total weight of the composite yarn 2, showing its importance in the overall performance; the carbon fiber 23 and the surface line 24 each account for 1 / 4, further providing the advantages of strength and aesthetics, and the plastic fiber 22 is relatively low, accounting for 1 / 6, providing a proper balance for the overall flexibility and comfort of the material.

[0024] Going further: In an optional embodiment, the dyeing process for preparing the composite yarn 2 is: a. Soak the surface line 24 in the reactive dye, with a bath ratio of 1:5, a pH value between 10.5-11.5, a temperature of 60°C, and an immersion time of 20-40 minutes; b. Add alkali to fix the color. Add 2g / L of the alkali substitute to the dye at a temperature of 45°C and a fixing time of 60min. c. After the fixation is completed, adjust the pH value to neutral, let the dye solution temperature stand to room temperature, take out the surface line 24, soak it in clean water, and remove excess dye; d. Cellulase washing, pH 5.5-6.5, temperature 25-35°C, smoothing treatment; e. Heating treatment: heating to 60°C for 30 minutes to inactivate cellulase; f. Anti-oxidation cleaning, using potassium permanganate for immersion and antioxidant treatment to improve the surface quality, durability, color stability and resistance to the external environment of the fabric; g. Take out the surface line 24, wash it repeatedly with cold water three times, and then dry it.

[0025] In this embodiment: Through this process, the surface line 24 is dyed, so that the composite yarn 2 of the present invention can show a variety of bright colors and rich visual effects. The use of reactive dyes and a one-step two-bath method for dyeing can ensure an excellent coloring effect, which not only meets the personalized needs of users in terms of color richness, but also ensures the bonding force between the dye and the fiber, making the color on the fabric 1 appear more vivid and stable. This dyeing method effectively reduces the fading problem caused by external environmental factors such as washing and sun exposure, and gives the fabric 1 a more lasting color performance. After the dyeing and fixation is completed, the floating hair on the surface line 24 can be removed through the smoothing technology. This step significantly improves the smoothness of the surface line 24, thereby The overall touch of the fabric 1 is improved. This smoothness enhances the softness and comfort of the fabric 1, especially when in contact with the skin, reducing friction and discomfort. Finally, the surface line 24 is treated with potassium permanganate solution for antioxidant treatment. This process aims to deeply improve the antioxidant capacity of the fabric 1 to reduce the color difference and degradation of the fabric 1 caused by oxidation reactions in subsequent use. This antioxidant treatment can not only extend the service life of the fabric 1, but also maintain the uniformity and freshness of the color. In summary, through the above-mentioned dyeing process and subsequent treatment, the composite yarn 2 has achieved an all-round improvement in color, feel and durability, so that the fabric 1 of the present invention has excellent performance in both functionality and aesthetics.

[0026] Going further: In an optional embodiment, the surface thread 24 is a blend of cotton fiber and linen fiber.

[0027] In this embodiment: through this design, the cotton fiber and linen fiber in the surface line 24 are both natural materials, and have excellent skin-friendly and ecological characteristics. When the fabric 1 comes into contact with the skin, these natural fibers can minimize irritation, and are therefore suitable for users of all skin types, especially those who are sensitive to synthetic materials. Cotton fiber is widely welcomed for its soft and comfortable properties. It has excellent air permeability and moisture absorption, can effectively absorb sweat on the skin surface, keep the user dry and comfortable, and is suitable for wearing in various climatic conditions. Linen fiber has good antibacterial and anti-odor properties, effectively reducing bacterial growth and the generation of odor, keeping the fabric 1 fresh. In addition, linen fiber is high in strength and wear-resistant, which can enhance the durability of the fabric 1 and extend its service life. Since cotton fiber and linen fiber are both natural materials, they are also easy to color, making the dyeing process of the surface line 24 more efficient. When dyeing with reactive dyes, these plant fibers can fully absorb the dye to ensure that the color is full and uniform.

[0028] Going further: In an optional embodiment, the plastic fiber 22 is polyurethane fiber.

[0029] In this embodiment: the plastic fiber 22 in the composite yarn 2 is a polyurethane fiber, which effectively fills the gaps between the silver fibers 21, thereby significantly improving the overall stability of the composite yarn 2. The polyurethane fiber itself has excellent elasticity, which not only enhances the flexibility of the composite yarn 2, but also further enhances the elasticity and comfort of the final fabric 1. The plastic fiber 22 and the silver fiber 21 together form the core layer of the composite yarn 2. This core layer can combine the plastic fiber 22 and the silver fiber 21 in different stacking methods to form a variety of cross-sections, such as Figure 5 As shown, the core layer can form an elliptical or rectangular cross-section, and can also be arranged into more unique shapes to achieve more design possibilities. This diverse cross-sectional design not only improves the adaptability and functionality of the composite yarn 2, but also can display a variety of complex and exquisite surface effects under the application of jacquard technology. This rich surface change increases the ornamental value of the fabric 1. Through the ingenious combination of polyurethane fiber and silver fiber 21 and their diverse cross-sectional forms, the composite yarn 2 designed by the present invention not only performs well in functionality, but also greatly enhances the visual beauty and tactile experience.

[0030] Going further: In an optional embodiment, the composite yarn 2 is softened after blending, and the specific process is: immerse the composite yarn 2 in a softener, add acetic acid, control the pH value between 5-6, control the temperature at 40°C, soak for 5-10 minutes, then take out the composite yarn 2, rinse and dry.

[0031] In this embodiment: Through this softening treatment process, the composite yarn 2 is softened as a whole, which is to improve the overall softness and comfort of the fabric 1. The heating product generally works at a temperature in the range of 30-40°C, so this softening treatment process is carried out in an environment of 40°C to make it more flexible. Through this softening treatment, the friction between the fibers of the composite yarn 2 is reduced. This interaction enables the fabric 1 to better adapt to the needs of the wearer in a heated environment, especially in the heated state, the touch and comfort of the fabric 1 are significantly improved.

[0032] Going further: In an optional embodiment, a jacquard machine is used, which includes four jacquard bars, groove needles, a needle core, and a knock-over plate.

[0033] In this embodiment: through this design, the four jacquard bars in the jacquard machine work together to make the weaving process of the fabric 1 more efficient and precise. The synchronous operation of the four jacquard bars can not only weave the bottom layer 11 of the fabric 1 at the same time, but also effectively combine the front layer 12 and the back layer 13 together. This operation method greatly improves the weaving efficiency of the fabric 1, shortens the production cycle, ensures high output, and maintains the high quality of the fabric 1. Fabric 1 is designed with jacquard on both sides to form a unique three-layer structure. In this structure, the bottom layer 11 provides a solid foundation, while the front layer 12 and the back layer 13 are interwoven with each other through a complex jacquard process, giving fabric 1 richer textures and patterns, further enhancing its visual appeal. This three-layer structure not only enhances the ornamental value of fabric 1, but also increases the thickness and warmth retention of fabric 1, thereby improving its comfort.

[0034] Going further: A multi-color and multi-layer jacquard fabric woven by a double needle bed warp knitting machine comprises a bottom layer 11, a front layer 12, a back layer 13, and a trimming 14. The bottom layer 11 is a plain weave, and the warp and weft of the fabric 1 are both made of composite yarns 2.

[0035] In this embodiment: the three-layer structure of the fabric 1 improves its stiffness, so that the fabric 1 has excellent texture both visually and tactilely. The fabric 1 woven with the composite yarn 2 has excellent thermal conductivity, especially when used in heating products, it can effectively prevent heat concentration. This ability can avoid local overheating caused by uneven heat distribution, thereby improving safety and comfort. Consumers can use the fabric 1 with confidence when using heating products without worrying about local overheating. In addition, the silver fiber 21 in the composite yarn 2 gives the fabric 1 excellent antibacterial properties, which can effectively inhibit the growth of bacteria and reduce the generation of odor. This advantage enables the fabric 1 to maintain a good sanitary state during long-term use, which meets the modern people's needs for healthy life. In terms of cutting, due to the characteristics of the silver fiber 21, plastic fiber 22 and carbon fiber 23 in the composite yarn 2, the fabric 1 is not easy to cut; in order to ensure the accuracy and neatness of the cutting, the use of laser cutting technology is a very suitable choice. This technology can achieve precise cutting and ensure the neatness of the cut surface. The edge of the fabric 1 after cutting is flattened to form a trim 14, which can effectively prevent the fabric 1 from being scattered, improve the overall stability of the fabric 1, and ensure the durability and aesthetics of the finished product during use.

[0036] Working principle and use process of the present invention: The fabric 1 in the present invention is woven and manufactured by an advanced jacquard machine, which is equipped with four jacquard combs, which can work together to achieve an efficient and fine weaving process. Through the synchronous operation of the four combs, the composite yarn 2 is cleverly woven into the fabric 1, giving it a unique texture and structure, so that the fabric 1 has good expressiveness. The three-layer structure of the fabric 1 improves its stiffness and width, so that the fabric 1 has excellent texture in both vision and touch. The fabric 1 woven with the composite yarn 2 has excellent thermal conductivity, especially when used in heating products, it can effectively prevent the concentration of heat. This ability can avoid local overheating caused by uneven heat distribution, thereby improving safety and comfort. Consumers can use the fabric 1 with confidence when using heating products without worrying about the problem of local overheating. In addition, the silver fiber 21 in the composite yarn 2 gives the fabric 1 excellent antibacterial properties, which can effectively inhibit the growth of bacteria and reduce the generation of odor. This advantage enables the fabric 1 to maintain a good sanitary state during long-term use, which meets the needs of modern people for healthy life. In terms of cutting, due to the characteristics of the silver fiber 21, the plastic fiber 22 and the carbon fiber 23 in the composite yarn 2, the fabric 1 is not easy to cut; in order to ensure the accuracy and neatness of the cutting, the use of laser cutting technology is a very suitable choice. This technology can achieve precise cutting and ensure the neatness of the cut surface. The edge of the fabric 1 after cutting is flattened to form a trim 14, which can effectively prevent the fabric 1 from being scattered, improve the overall stability of the fabric 1, and ensure the durability and aesthetics of the finished product during use; The composite yarn 2 in the present invention adopts a special processing technology; the silver fiber 21 and the plastic fiber 22 in the composite yarn 2 are used as the core layer, the carbon fiber 23 is used as the middle layer, and the surface yarn 24 is used as the outer layer, forming a composite material structure with both functions and excellent performance. Specifically, the silver fiber 21 has extremely high thermal conductivity and can quickly conduct heat to the surface of the fabric 1 to ensure uniform heat distribution. At the same time, its excellent antibacterial properties can effectively inhibit the generation of bacteria and odors, which enables users to enjoy a more comfortable and hygienic wearing experience when used in heating products. The carbon fiber 23 improves the durability of the fabric 1 of the present invention with its excellent strength. Compared with traditional fiber materials, the carbon fiber 23 has better tensile strength and impact resistance, thereby extending the service life of the fabric 1. At the same time, the surface line 24 is dyed and combined with the double-sided jacquard process, so that the fabric 1 visually presents a more complex and rich color design, which improves its ornamental and fashion sense and provides users with a more personalized choice. In addition, the surface line 24 adopts a staggered weaving method to tightly combine the middle layer carbon fiber 23 with the core layer silver fiber 21 and plastic fiber 22. This structural design effectively avoids the dispersion or dislocation of the middle layer and the core layer during use, ensuring the stability and integrity of the fabric 1 during use; The plastic fiber 22 in the composite yarn 2 is a polyurethane fiber, which effectively fills the gaps between the silver fibers 21, thereby significantly improving the overall stability of the composite yarn 2. The polyurethane fiber itself has excellent elasticity, which not only enhances the flexibility of the composite yarn 2, but also further enhances the elasticity and comfort of the final fabric 1. The plastic fiber 22 and the silver fiber 21 together form the core layer of the composite yarn 2. This core layer can combine the plastic fiber 22 and the silver fiber 21 in different stacking methods to form a variety of cross-sections, such as Figure 5 As shown, the core layer can form an elliptical or rectangular cross-section, and can also be arranged into more unique shapes to achieve more design possibilities. This diverse cross-sectional design not only improves the adaptability and functionality of the composite yarn 2, but also can display a variety of complex and exquisite surface effects under the application of jacquard technology. This rich surface change increases the ornamental value of the fabric 1. Through the ingenious combination of polyurethane fiber and silver fiber 21 and their diverse cross-sectional forms, the composite yarn 2 designed by the present invention not only performs well in functionality, but also greatly enhances the visual beauty and tactile experience.

[0037] By dyeing the surface line 24 through a dyeing process, the composite yarn 2 of the present invention can show a variety of bright colors and rich visual effects. The use of reactive dyes and a one-step two-bath method for dyeing can ensure an excellent coloring effect, which not only meets the personalized needs of users in terms of color richness, but also ensures the bonding force between the dye and the fiber, making the color on the fabric 1 appear more vivid and stable. This dyeing method effectively reduces the fading problem caused by external environmental factors such as washing and sun exposure, and gives the fabric 1 a more lasting color performance. After the dyeing and color fixation is completed, the floating hair on the surface line 24 can be removed through a smoothing treatment technology. This step significantly improves the smoothness of the surface line 24, thereby improving the surface. The overall touch of the material 1, this smoothness enhances the softness and comfort of the fabric 1, especially when in contact with the skin, reducing friction and discomfort, and finally the surface line 24 is treated with potassium permanganate solution for antioxidant treatment. This process aims to deeply improve the antioxidant ability of the fabric 1, so as to reduce the color difference and degradation of the fabric 1 caused by oxidation reaction in subsequent use. This antioxidant treatment can not only extend the service life of the fabric 1, but also maintain the uniformity and freshness of the color; in summary, through the above-mentioned dyeing process and subsequent treatment, the composite yarn 2 has achieved an all-round improvement in color, feel and durability, so that the fabric 1 of the present invention has excellent performance in both functionality and aesthetics.

[0038] Finally, the composite yarn 2 is softened as a whole through a softening process in order to improve the overall softness and comfort of the fabric 1. The heating product generally works at a temperature in the range of 30-40°C, so this softening process is carried out in an environment of 40°C to make it more flexible. Through this softening treatment, the friction between the fibers of the composite yarn 2 is reduced. This interaction enables the fabric 1 to better adapt to the needs of the wearer in a heated environment, especially in the heated state, the touch and comfort of the fabric 1 are significantly improved.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A process for knitting multi-color and multi-layer jacquard fabrics using a double needle bed warp knitting machine, characterized in that: The following steps are involved: S1. Preparation work, preparation of composite yarns of different colors, preparation of electronic jacquard patterns, and importing pattern data into the jacquard machine; S2. The composite yarn is loaded into a jacquard machine, which uses four separate jacquard bars for weaving. The first jacquard bar is used to weave the bottom tissue, the second and third jacquard bars are used to weave the front and rear needle beds, respectively, and the fourth jacquard bar is used to weave the jacquard pattern. S3. Use a laser trimmer to melt and trim the edges of the fabric and cut the fabric into the set size; S4. Finished product finishing; Among them, the dyeing process for preparing the composite yarn is: a. Soak the surface line in reactive dyes, bath ratio 1:5, pH value between 10.5-11.5, temperature 60℃, immersion time 20-40min; b. Add alkali to fix the color. Add 2g / L of the alkali substitute to the dye at a temperature of 45°C and a fixing time of 60min. c. After the fixation is completed, adjust the pH value to neutral, let the dye solution temperature stand to room temperature, take out the surface thread, soak it in clean water to remove excess dye; d. Cellulase washing, pH 5.5-6.5, temperature 25-35°C, smoothing treatment; e. Heating treatment: heating to 60°C for 30 minutes to inactivate cellulase; f. Anti-oxidation cleaning, using potassium permanganate for immersion and antioxidant treatment; g. Remove the surface line, wash it three times with cold water, and then dry it.

2. The process for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine according to claim 1, characterized in that: The composite yarn in S1 is blended by silver fiber, plastic fiber, carbon fiber and surface thread, the silver fiber and the plastic fiber are arranged in parallel, the plastic fiber fills the gaps between the silver fibers, a number of carbon fibers are evenly arranged on the outside of the silver fiber and the plastic fiber, and the carbon fiber is arranged in parallel with the silver fiber.

3. The process for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine according to claim 2, characterized in that: The surface wires are sheathed on the outer side of the carbon fibers in a staggered weaving manner.

4. The process for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine according to claim 3, characterized in that: The surface thread is made of a blend of cotton fiber and hemp fiber.

5. The process for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine according to claim 2, characterized in that: The plastic fiber is polyurethane fiber.

6. The process for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine according to claim 2, characterized in that: The composite yarn is softened after blending, and the specific process is: immersing the composite yarn in a softener, adding acetic acid, controlling the pH value between 5-6, controlling the temperature at 40°C, soaking for 5-10 minutes, and then taking out the composite yarn, rinsing and drying.

7. The process for knitting multi-color and multi-layer jacquard fabrics by a double needle bed warp knitting machine according to claim 1, characterized in that: A jacquard machine is used, which includes four jacquard bars, groove needles, a needle core, and a knock-over plate.

8. A fabric made by a double needle bed warp knitting machine weaving a multi-color multi-layer jacquard fabric, using the process of weaving a multi-color multi-layer jacquard fabric by a double needle bed warp knitting machine as claimed in any one of claims 1 to 7, characterized in that: The fabric comprises a bottom layer, a front layer, a back layer and a trimming edge, wherein the bottom layer is a plain weave, and the warp and weft of the fabric are both made of composite yarns.

9. The fabric made by the multi-color and multi-layer jacquard process knitted by a double needle bed warp knitting machine according to claim 8, characterized in that: The composite yarn is blended by silver fiber, plastic fiber, carbon fiber and surface thread. The silver fiber and the plastic fiber are arranged in parallel. The plastic fiber fills the gaps between the silver fibers. Several carbon fibers are evenly arranged on the outside of the silver fiber and the plastic fiber. The carbon fiber is arranged in parallel with the silver fiber.

10. The fabric made by the multi-color and multi-layer jacquard process knitted by a double needle bed warp knitting machine according to claim 9, characterized in that: The surface wire is sheathed on the outside of the carbon fiber in a staggered weaving manner; the surface wire is a blend of cotton fiber and hemp fiber; and the plastic fiber is polyurethane fiber.

Images