Spinning method of rotor spinning color spinning fabric

Abstract

The invention relates to the technical field of spinning, and discloses a spinning method of rotor spinning color spinning fabric, which comprises the following steps: step 1, cotton blending treatment, step 2, rotor spinning, step 3, knitting connection, step 4, post-treatment dissolution, and step 5, shaping and drying. Multi-hue dyed cotton and water-soluble vinylon are subjected to mixed spinning, tough composite yarn is formed through ultrahigh rotor rotating speed and high twist, a dense matrix is constructed through plain knitting, vinylon is finally dissolved in warm water at 45-55 DEG C in an oriented mode, a continuous regular hollow structure is generated in one step, in addition, color layer richness and porosity can be achieved, and the hollow structure can be formed in one step. The problem that a traditional color spun fabric is thick and heavy is solved, it needs to be explained that the spun fabric has the characteristics of light weight, high breathability and three-dimensional light transmission, complex equipment is not needed in the scheme, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to a method for spinning a rotor-spun colored fabric. Background Art

[0002] Rotor-spun color-dyed fabrics are produced using a combination of rotor spinning and color-spinning techniques. Rotor spinning utilizes the centrifugal force generated by a high-speed rotor to cohere and twist fibers into yarn. This method boasts high spinning speeds, a short production cycle, and strong adaptability, making it highly adaptable and capable of efficiently processing a wide range of natural and chemical fibers. Color-dyed spinning, on the other hand, involves dyeing the fibers before spinning, then blending the dyed fibers in appropriate proportions before spinning, resulting in a naturally soft, blended yarn. Compared to traditional yarn or fabric dyeing, this method reduces dyeing and finishing steps and wastewater discharge, offering both environmental benefits and unique colors.

[0003] In the existing technology, most rotor-spun colored fabrics have a tightly woven structure, which lacks air permeability and three-dimensional texture, and the limited fiber mixing uniformity easily leads to mottled colors. Some processes have problems such as low color fastness and single fabric shape. Summary of the Invention

[0004] The object of the present invention is to provide a method for spinning a colored spun fabric by rotor spinning, so as to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention provides a method for spinning a rotor-spun colored spun fabric. The fabric in the spinning method is composed of warp yarns and weft yarns, and the warp yarns and weft yarns are knitted by a rotor-spun colored spun process. The spinning method for the rotor-spun colored spun fabric comprises the following steps:

[0007] Step 1: perform cotton blending treatment. According to the spinning process parameters, the mass ratio of dyed cotton fiber is 75-85 and the water-soluble woven fiber is 25-15, and they are mixed to obtain a preliminary mixed fiber, wherein the dyed cotton fiber contains at least three kinds of colored cotton with different hues.

[0008] Step 2: Perform rotor spinning. Arrange the rotor spinning machine according to the spinning process parameters, put the mixed fiber initially obtained in step 1 into the rotor spinning machine, set the rotor speed to 90000-110000 r / m, the combing roller speed to 8000-9500 r / m, and the yarn twist to 680-750 twists / m to spin the composite fiber yarn.

[0009] Step 3: Knitting connection: the composite fiber yarn obtained in step 2 is used as warp and weft yarns. According to the spinning process parameters, a knitting machine is arranged to weave the composite fiber yarn in a flat needle manner through the knitting machine, and the yarns are mechanically knitted to form a fabric base.

[0010] Step 4: Post-processing and dissolution: According to the spinning process parameters, the fabric substrate obtained in step 3 is immersed in 45-55° C. warm water for 25-35 minutes to dissolve the water-soluble woven fiber, thereby obtaining a yarn network with a continuous hollow structure.

[0011] Step 5: Drying the yarn network obtained in step 4, and finally obtain the hollow rotor-spun colored fabric.

[0012] The above-mentioned technical solution is adopted. Through the precise mixing ratio of dyed cotton fiber and water-soluble vinyl fiber, the efficient process parameters of rotor spinning and the synergistic effect of post-processing dissolution, while retaining the multi-color fiber blending effect, it also uses the directional dissolution of water-soluble fiber to form a continuous hollow structure to achieve a three-dimensional and breathable texture fabric, breaking through the structural limitations of traditional color-spun fabrics.

[0013] Furthermore, the water-soluble vinylon fiber described in step 1 is polyvinyl alcohol fiber, which has a dissolution temperature of less than 60° C., a fineness of 1.2-1.8 dtex, and a length of 35-38 mm.

[0014] The above technical solution is adopted, in which the water-soluble vinylon fiber is limited to a polyvinyl alcohol fiber with a dissolution temperature of less than 60°C and a fineness of 1.2-1.8 dtex, to ensure that the water-soluble vinylon fiber can be quickly and completely dissolved in warm water of 45-55°C, so as to achieve fineness matching with dyed cotton fiber, avoid the increase in breakage rate due to fiber fineness differences during the spinning process, and ensure yarn strength and production efficiency.

[0015] Furthermore, the rotor spinning machine described in step 2 uses a ceramic rotor with a diameter of 42 mm, the spinning tension is controlled at 12-15 cN, and the yarn count is 28-32 Ne.

[0016] The above technical solution is adopted, which enables the composite yarn to have high strength and uniformity, providing a stable foundation for subsequent knitting and weaving to prevent the structure from collapsing during hollowing processing.

[0017] Furthermore, the knitting connection in step three adopts a 14G-18G circular knitting machine, the surface density is set to 25-30 stitches / cm, and the yarn feeding tension is set to 4-6 cN.

[0018] The above technical solution is adopted to achieve a uniform and tight coil structure of plain knitting, and a regular and controllable hollow shape after dissolution, thereby avoiding deformation or uneven distribution of holes.

[0019] Furthermore, in the post-treatment dissolution described in step 4, 0.5-1.2 g / L of penetrant JFC is added during the dissolution treatment, with a bath ratio of 1:15-1:20, and the fabric hollowing rate reaches 25%-35% after dissolution.

[0020] The above technical solution improves the dissolution efficiency of water-soluble vinylon fiber, shortens the processing time, and accurately locks the hollowing rate at 25%-35% to achieve fabric breathability and visual beauty.

[0021] Furthermore, the dyed cotton fiber adopts a loose fiber dyeing process, has a color fastness greater than level 4, and a color difference less than 0.8.

[0022] The above technical solution adopts the loose fiber dyeing process to fundamentally eliminate the risk of fabric fading or staining, so as to achieve the color stability and product durability of multi-color cotton blends.

[0023] Furthermore, before the shaping and drying in step five, the yarn network with a continuous hollow structure is first subjected to a steam relaxation treatment, steam equipment is arranged, the steam pressure is set to 0.15-0.25 MPa, and the treatment time is set to 8-12 minutes.

[0024] The above technical solution is adopted, which can release the internal stress of the yarn and pre-shrink the fiber, preventing the fabric from shrinking and deforming after drying, and ensuring the dimensional stability of the hollow structure.

[0025] Furthermore, the pore size of the continuous hollow structure is 0.3-0.8 mm, and the pore distribution density is 120-180 / cm 2 .

[0026] By adopting the above technical solution, the air permeability and light transmittance of the spun fabric can be balanced.

[0027] The present invention has the following beneficial effects:

[0028] (1) The present invention is to mix and spin multi-color dyed cotton with water-soluble vinylon, form a strong composite yarn through ultra-high rotor speed and high twist, and then construct a dense matrix by plain knitting. Finally, the vinylon is directionally dissolved in warm water at 45-55°C to generate a continuous and regular hollow structure in one step. In addition, the richness of color layers and porosity can be achieved, which solves the limitation of the traditional color-spun fabric being heavy. It should be noted that the spun fabric has the characteristics of lightweight, high breathability and three-dimensional light transmission. This solution does not require complex equipment and reduces costs.

[0029] (2) The present invention adopts at least three kinds of dyed cotton fibers with different hues, which are fully mixed through the rotor spinning process to form a color effect with rich layers and natural transitions, thereby avoiding the color spots and color differences that are prone to occur in traditional dyeing processes. On the other hand, the color fastness of the dyed cotton fibers is greater than level 4 and the color difference is less than 0.8, which allows the spun fabrics to maintain bright and stable colors after long-term use and multiple washings, greatly improving the beauty and durability of the spun fabrics, and meeting the high requirements of various types of clothing for color quality.

[0030] (3) The present invention forms a continuous hollow structure by dissolving water-soluble woven fibers. This hollow design not only allows the spun fabric to achieve a light and transparent texture, but also improves air permeability and moisture absorption. In addition, the flat needle knitting connection can make the spun fabric have good elasticity and extensibility. By adding a shaping and drying process during spinning, the size of the spun fabric can be stable and not easily deformed, and can adapt to the wearing needs of different body shapes. The hollow structure also enhances the fluffiness and three-dimensional sense of the spun fabric, which can improve the comfort and visual effect of the wearer.

[0031] (4) The present invention sets the parameters of the rotor spinning machine so that the fibers can be fully combed and mixed during the rotor spinning process, and then combined with the yarn twist, the spun composite fiber yarn has a tight structure, high uniformity, excellent breaking strength and wear resistance. By controlling the ceramic rotor and spinning tension, the stability of the yarn quality is further achieved, which also lays a solid foundation for the overall quality of the spun fabrics and reduces the problems of pilling, snagging, etc. in the use of the spun fabrics.

[0032] (5) In terms of production efficiency, the process parameters of each link of the present invention are clear and controllable. The rotor spinning machine can realize continuous production through the efficient operation of the circular knitting machine. By designing the smooth connection between the steps of cotton blending, spinning, knitting, etc., and the reasonable setting of the post-processing dissolution time and the shaping and drying temperature, the treatment effect can be ensured while shortening the production cycle. In addition, the clear process standards can facilitate workers' operation and quality control, reduce the error rate in the production process, and increase the output per unit time, which is suitable for large-scale industrial production.

[0033] (6) The present invention uses polyvinyl alcohol fiber as the water-soluble fiber, which only needs warm water to dissolve in the post-processing, without the need to use corrosive chemicals such as strong alkali and strong acid, thereby reducing pollution to the environment. The amount of penetrant JFC added during the dissolution process is small and environmentally friendly, and the bath ratio is controlled to save water resources, which is in line with the green and environmental protection development trend of the modern textile industry and reduces the environmental protection treatment cost during the production process.

[0034] (7) The present invention can effectively eliminate the internal stress of the spun fabric by steaming and relaxing it before shaping and drying, and can make the structure of the spun fabric more stable and significantly reduce the shrinkage rate by drying and shaping. In addition, the yarn network of the hollow structure is stable in shape after shaping and is not easy to deform in subsequent use. Combined with high-strength composite fiber yarn, the spun fabric can have good stiffness and drape, can adapt to a variety of cutting and sewing processes, and expand the application field of spun fabrics.

[0035] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. DETAILED DESCRIPTION

[0036] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0037] The present invention is a spinning method for a rotor-spun colored spun fabric. The fabric in the spinning method is composed of warp yarns and weft yarns, and the warp yarns and weft yarns are knitted by a rotor-spun colored spun process. The spinning method is characterized in that the rotor-spun colored spun fabric comprises the following steps:

[0038] Step 1: Perform cotton blending treatment. According to the spinning process parameters, the mass ratio of dyed cotton fiber is 75-85 and the water-soluble vinylon fiber is 25-15, and they are mixed to obtain a preliminary mixed fiber, wherein the dyed cotton fiber contains at least three kinds of colored cotton with different hues. Among them, the water-soluble vinylon fiber is polyvinyl alcohol fiber, which has a dissolution temperature of less than 60°C, a fineness of 1.2-1.8 dtex, and a length of 35-38 mm. The dyed cotton fiber adopts a loose fiber dyeing process, and the color fastness is greater than level 4 and the color difference is less than 0.8.

[0039] In this step, first, the dissolution temperature of the water-soluble vinylon fiber is limited to less than 60°C, ensuring that it can be quickly and completely dissolved under 45-55°C warm water conditions in the subsequent post-processing dissolution link of step four, avoiding damage to the dyed cotton fiber caused by high temperature and ensuring the original color of the fabric. Secondly, the fineness is matched with the dyed cotton fiber, which can effectively reduce the breakage rate in the spinning process and improve production efficiency. Moreover, the length of the mixed fiber is moderate, which not only ensures the cohesion between the mixed fibers and makes the yarn strong enough, but also is conducive to uniform distribution in the spinning machine, improving the quality of the yarn. While retaining the multi-color fiber mixing effect, it can also lay the foundation for the subsequent formation of a continuous hollow structure, and finally realize a three-dimensional and breathable texture fabric.

[0040] In addition, it should be noted that by limiting the use of loose fiber dyeing technology for dyed cotton fibers, the fiber interior can be fully colored, fundamentally eliminating the risk of fading or staining of the fabric, ensuring the color stability of multi-color blended cotton, and determining the color fastness requirement to be greater than level 4, ensuring that the color of the spun fabric is not easy to fall off during long-term use and washing, thereby improving the durability of the textile fabric. Strict control of color difference to less than 0.8 ensures that the color of spun fabrics from different batches or parts is highly consistent, thereby improving product quality and market competitiveness. Through this process, rotor-spun colored fabrics with uniform and long-lasting color can be produced to meet consumer demand for high-quality textiles.

[0041] Step 2: Perform rotor spinning. Arrange the rotor spinning machine according to the spinning process parameters, put the mixed fiber initially obtained in step 1 into the rotor spinning machine, set the rotor speed to 90000-110000 r / m, the combing roller speed to 8000-9500 r / m, and the yarn twist to 680-750 twists / m to spin composite fiber yarn. The rotor spinning machine uses a ceramic rotor with a diameter of 42 mm, the spinning tension is controlled at 12-15 cN, and the yarn count is 28-32 English.

[0042] In this step, the ceramic rotor used has the characteristics of high hardness, good wear resistance and smooth surface, which can reduce the damage of fibers during the spinning process and improve the strength and uniformity of the yarn. Reasonable spinning tension control is conducive to stabilizing the yarn forming process and avoiding the occurrence of yarn relaxation or breakage. The yarn count of 28-32 English can make the yarn thickness moderate, which not only ensures the texture and strength of the fabric, but also provides a stable foundation for subsequent knitting and weaving, effectively preventing the structural collapse due to insufficient yarn strength during hollowing processing, and ensuring the overall quality and performance of the fabric.

[0043] Step 3: perform knitting connection. Use the composite fiber yarn obtained in step 2 as warp and weft yarns. Arrange the knitting machine according to the spinning process parameters. Weave the composite fiber yarn through the knitting machine in a flat needle manner. The yarns are mechanically knitted to form a fabric matrix. The knitting connection uses a 14G-18G circular knitting machine, the surface density is set to 25-30 coils / cm, and the yarn feeding tension is set to 4-6cN.

[0044] In this step, the coil structure of the plain needle weaving can be made uniform and tight. The appropriate circular weft machine specifications and yarn feeding tension can make the composite fiber yarn evenly distributed during the weaving process, avoiding inconsistent coil sizes or uneven density. The reasonable setting of the density of the textile fabric can make the hollow shape after dissolution regular and controllable, avoiding deformation or uneven distribution of holes, and making the fabric present a uniform and beautiful hollow effect, which not only improves the air permeability and visual beauty of the spun fabric, but also enhances the structural stability of the fabric.

[0045] Step 4: perform post-processing dissolution. According to the spinning process parameters, the fabric substrate obtained in step 3 is immersed in 45-55°C warm water for 25-35 minutes to dissolve the water-soluble fiber to obtain a yarn network with a continuous hollow structure. In the post-processing dissolution, 0.5-1.2g / L of penetrant JFC is added during the dissolution treatment, the bath ratio is 1:15-1:20, and the hollow rate of the fabric after dissolution reaches 25%-35%.

[0046] In this step, the addition of penetrant JFC can effectively improve the dissolution efficiency of water-soluble vinylon fiber, shorten the processing time, and reduce production costs. Reasonable bath ratio setting can make the dissolution process sufficient and uniform, and can make the water-soluble vinylon fiber completely dissolved. The hollowing rate can be accurately locked at 25%-35%. While ensuring the breathability of the spun fabric, it can also maintain the structural strength and visual beauty of the textile fabric, balance the functionality and aesthetics of the fabric, so that the spun fabric has good air permeability and moisture permeability, and can also achieve a unique three-dimensional air permeability texture, breaking through the structural limitations of traditional color-spun fabrics.

[0047] Step 5: Perform shaping and drying. According to the spinning process parameters, set the temperature of the dryer to 105-115°C, put the yarn network obtained in step 4 into the dryer for drying, and finally obtain the hollow rotor-spun colored spun fabric. In addition, before shaping and drying, steam relaxation treatment is performed on the yarn network with a continuous hollow structure. The steam equipment is arranged, the steam pressure is set to 0.15-0.25MPa, and the processing time is set to 8-12 minutes. The pore size of the continuous hollow structure is 0.3-0.8mm, and the hole distribution density is 120-180 / cm 2 .

[0048] In this embodiment, multi-phase dyed cotton is mixed with water-soluble vinylon to form a strong composite yarn through ultra-high rotor speed and high twist, and then a dense matrix is ​​constructed by plain weaving. Finally, the vinylon is directionally dissolved in warm water at 45-55°C to generate a continuous and regular hollow structure in one step. In addition, the richness of color layers and porosity can be achieved, which solves the limitation of the heavy traditional color-spun fabrics. It should be noted that the spun fabric has the characteristics of lightweight, high breathability and three-dimensional light transmittance. This solution does not require complex equipment and reduces costs.

[0049] In addition, it should be noted that steaming and relaxing the yarn network with a continuous hollow structure before shaping and drying can effectively ensure the dimensional stability of the hollow structure. The steaming and relaxing treatment can release the internal stress of the yarn and pre-shrink the fiber, thereby avoiding the shrinkage and deformation of the spun fabric due to stress release during the subsequent drying process. Reasonable steam pressure and treatment time ensure that the treatment effect is sufficient and not excessive, which not only ensures the stability of the fabric size but also does not affect the integrity of the hollow structure. Through the implementation of this step process, a rotor-spun colored fabric with precise size and stable hollow structure can be obtained, thereby improving the product's qualification rate and practicality.

[0050] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A spinning method for a rotor-spun colored fabric, wherein the fabric is composed of warp yarn and weft yarn, and the warp yarn and weft yarn are knitted by a rotor-spun colored fabric process, characterized in that: The spinning method of the rotor-spun colored fabric comprises the following steps: Step 1: Performing a cotton blending process, mixing dyed cotton fibers with water-soluble woven fibers at a mass ratio of 75-85 and 25-15 according to the spinning process parameters to obtain a preliminary mixed fiber, wherein the dyed cotton fibers contain at least three different hue colors; Step 2: Perform rotor spinning. Arrange the rotor spinning machine according to the spinning process parameters, put the mixed fiber obtained in step 1 into the rotor spinning machine, set the rotor speed to 90,000-110,000 r / m, the combing roller speed to 8,000-9,500 r / m, and the yarn twist to 680-750 twists / m to spin the composite fiber yarn; Step 3: knitting connection, using the composite fiber yarn obtained in step 2 as warp and weft yarns, arranging a knitting machine according to the spinning process parameters, and weaving the composite fiber yarn through the knitting machine in a flat needle manner, wherein the yarns are mechanically knitted to obtain a fabric base; Step 4: Post-processing and dissolution: according to the spinning process parameters, the fabric substrate obtained in step 3 is immersed in 45-55°C warm water for 25-35 minutes to dissolve the water-soluble fiber, thereby obtaining a yarn network with a continuous hollow structure; Step 5: Drying the yarn network obtained in step 4, and finally obtain the hollow rotor-spun colored fabric.

2. The method for spinning a rotor-spun colored fabric according to claim 1, characterized in that: The water-soluble vinylon fiber described in step 1 is polyvinyl alcohol fiber, which has a dissolution temperature of less than 60° C., a fineness of 1.2-1.8 dtex, and a length of 35-38 mm.

3. The method for spinning a rotor-spun colored fabric according to claim 1, characterized in that: The rotor spinning machine described in step 2 uses a ceramic rotor with a diameter of 42 mm, the spinning tension is controlled at 12-15 cN, and the yarn count is 28-32 Ne.

4. The method for spinning a rotor-spun colored fabric according to claim 1, characterized in that: The knitting connection in step 3 uses a 14G-18G circular knitting machine, the surface density is set to 25-30 stitches / cm, and the yarn feeding tension is set to 4-6 cN.

5. The method for spinning a rotor-spun colored fabric according to claim 1, characterized in that: In the post-treatment dissolution described in step 4, 0.5-1.2 g / L of penetrant JFC is added during the dissolution treatment, with a bath ratio of 1:15-1:

20. After dissolution, the fabric hollowing rate reaches 25%-35%.

6. The method for spinning a rotor-spun colored fabric according to claim 1, characterized in that: The dyed cotton fiber adopts a loose fiber dyeing process, has a color fastness greater than level 4, and a color difference less than 0.

8.

7. The method for spinning a rotor-spun colored fabric according to claim 1, characterized in that: Before the shaping and drying in step five, the yarn network with a continuous hollow structure is first subjected to a steam relaxation treatment, and steam equipment is arranged, the steam pressure is set to 0.15-0.25 MPa, and the treatment time is set to 8-12 minutes.

8. The method for spinning a rotor-spun colored fabric according to claim 1, characterized in that: The pore size of the continuous hollow structure is 0.3-0.8 mm, and the pore distribution density is 120-180 per cm 2 .