Preparation method of three-dimensional tiger pattern color-changing napping yarn

Abstract

The invention provides a preparation method of a three-dimensional tiger pattern color-changing napping yarn, which comprises the following steps: raw material preparation and proportioning: mixing 60%-65% of conventional polyester fibers, 15%-20% of color-changing fibers, 10%-12% of wool fibers and 5%-8% of low-melting-point polyester fibers according to a proportion; the melting point of the low-melting-point polyester fiber ranges from 120 DEG C to 150 DEG C; yarn mixing and pretreatment are conducted, a cotton clamping machine and a drawing frame are used for conducting primary mixing and further carding on the fibers, and it is guaranteed that the low-melting-point fibers are locally and intensively distributed in the yarn; selecting a spinning process, including ring spinning or air spinning, and controlling local aggregation distribution of the low-melting-point fibers by adjusting spinning parameters; a napping process: through fine control of the napping process, the low-melting-point fiber forms a tiger pattern effect on the surface of the yarn; in the heat treatment process, a staged heating mode is adopted, the low-melting-point fibers are locally melted, the tiger pattern effect is formed, and the yarn form is fixed through cooling shaping.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a method for preparing a three-dimensional tiger-pattern color-changing brushed yarn. Background Art

[0002] With the continuous development of the textile industry, consumers have higher and higher requirements for textile products, not only pursuing comfort and beauty, but also paying more attention to the uniqueness and innovation of products. It is particularly important to develop textile materials with unique textures, colors and touch.

[0003] The preparation of three-dimensional tiger-pattern color-changing brushed yarn can meet consumers' dual demands for the appearance and touch of textiles, and provide more abundant and diverse choices. As a new type of textile material, three-dimensional tiger-pattern color-changing brushed yarn has high technical content and added value. By applying it to clothing, home textiles and other fields, the overall quality and competitiveness of the product can be improved. In addition to the traditional clothing and home textile fields, three-dimensional tiger-pattern color-changing brushed yarn can also be used in other fields, such as automotive interiors, decorations, etc. This helps to expand the application scope of textile materials and bring them new market opportunities. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for preparing a three-dimensional tiger-pattern color-changing brushed yarn. By combining low-melting-point fiber with a brushed process, a tiger-pattern effect with visual depth and layering is achieved, greatly enriching the texture performance of the yarn. The use of color-changing yarn further enhances the richness and variability of the surface texture, so that the yarn presents different colors and texture effects under different lighting or temperature conditions.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A method for preparing a three-dimensional tiger-pattern color-changing brushed yarn comprises the following steps: S1. Raw material preparation and proportioning: conventional polyester fiber, color-changing fiber, wool fiber and low-melting-point polyester fiber are mixed in a predetermined proportion, wherein the conventional polyester fiber accounts for 60% to 65%, the color-changing fiber accounts for 15% to 20%, the wool fiber accounts for 10% to 12%, and the low-melting-point polyester fiber accounts for 5% to 8%, and the melting point range of the low-melting-point polyester fiber is 120° C. to 150° C.; S2, yarn mixing and pretreatment, using a carding machine and a drawing machine to preliminarily mix and further comb the fibers to ensure that the low-melting-point fibers are locally concentrated in the yarn; S3, selecting a spinning process, including ring spinning or air spinning, and controlling the local aggregation distribution of the low-melting-point fiber by adjusting the spinning parameters; S4, napping process: through fine control of the napping process, the low melting point fiber forms a tiger stripe effect on the yarn surface; S5. Heat treatment process: The low melting point fiber is locally melted by heating in stages to form a tiger stripe effect, and the yarn shape is fixed by cooling. The specific process is as follows: Heating stage 1: Under the condition of temperature range of 120℃~130℃, use hot air drying furnace or infrared heating equipment to heat, so that the low melting point fiber begins to melt, but the color-changing fiber does not stimulate its color change, and continue heating for 10~15 minutes; Heating stage 2: Raise the temperature to 130℃~150℃, continue to use hot air drying oven or infrared heating equipment to stimulate the color change of the color-changing fiber, and ensure that the low-melting-point fiber has begun to melt and combine with other fibers, and continue heating for 10~20 minutes; Cooling and shaping stage: After heating, it is cooled by air cooling or water cooling for 3 to 5 minutes, and the shaping treatment is carried out at a shaping temperature of 130°C for 20 minutes to ensure that the color effect of the color-changing fiber is stable and the melting shape of the low-melting-point fiber is fixed.

[0006] Preferably, in the yarn mixing and pretreatment step, when a cotton card machine is used for preliminary mixing, the feed speed is 1000~1200m / min and the pressure is about 2.5~3.5kg / cm² to ensure high-density aggregation of low-melting point fibers in local areas during the mixing process.

[0007] Preferably, when ring spinning is selected as the spinning process, the spinning twist is 200~400t / m, the spinning tension is about 0.8~1.2N, and the spinning speed is 1500~2000m / min. The local aggregation of low-melting-point fibers in the yarn is controlled by adjusting the twist and tension of the spinning machine.

[0008] Preferably, when air spinning is selected as the spinning process, the local aggregation and distribution of the low-melting-point fibers in the yarn can be effectively controlled by adjusting the air flow pressure to 0.2-0.5 bar and the spinning speed to 1200-1600 m / min.

[0009] Preferably, in the napping process, the tension of the napping machine is controlled to be 0.5~0.8N, the loop length is controlled to be 3~8mm, the napping speed is 200~300m / min, and the operating temperature is maintained at 80~100°C, so that the low-melting point fiber forms local melting and aggregation during the napping process, showing a tiger stripe effect.

[0010] Preferably, in the final treatment and inspection step, a setting treatment is performed at a setting temperature of 130° C. for 20 minutes, and a yarn quality inspection is performed, with a focus on checking the uniformity and strength of the tiger stripe effect and the mechanical properties of the yarn.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The present application provides a method for preparing a three-dimensional tiger-pattern color-changing brushed yarn, which achieves a tiger-pattern effect with visual depth and layering by combining low-melting-point fiber with a brushed process, greatly enriching the texture performance of the yarn. The use of color-changing yarn further enhances the richness and variability of the surface texture, so that the yarn presents different colors and texture effects under different lighting or temperature conditions.

[0012] This application ensures the uniformity and strength of the tiger stripe effect by precisely controlling process parameters such as spinning, napping and heat treatment, thereby improving product quality and stability. DETAILED DESCRIPTION

[0013] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used for other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0014] The present invention provides a method for preparing a three-dimensional tiger-pattern color-changing brushed yarn, comprising the following steps: S1. Raw material preparation and proportioning: conventional polyester fiber, color-changing fiber, wool fiber and low-melting-point polyester fiber are mixed in a predetermined proportion, wherein the conventional polyester fiber accounts for 60% to 65%, the color-changing fiber accounts for 15% to 20%, the wool fiber accounts for 10% to 12%, and the low-melting-point polyester fiber accounts for 5% to 8%, and the melting point range of the low-melting-point polyester fiber is 120° C. to 150° C.; S2. Yarn mixing and pretreatment: Use a carding machine and a drawing machine to preliminarily mix and further comb the fibers to ensure that the low-melting-point fibers are locally concentrated in the yarn. When using the carding machine for preliminary mixing, the feed speed is 1000~1200m / min and the pressure is about 2.5~3.5kg / cm² to ensure that the low-melting-point fibers are densely aggregated in local areas during the mixing process. S3, selecting a spinning process, including ring spinning or air spinning, and controlling the local aggregation distribution of the low-melting-point fiber by adjusting the spinning parameters; wherein: When ring spinning is selected, the spinning twist is 200~400t / m, the spinning tension is about 0.8~1.2N, and the spinning speed is 1500~2000m / min. The local aggregation of low-melting-point fibers in the yarn is controlled by adjusting the twist and tension of the spinning machine; When air spinning is selected, the local aggregation and distribution of low-melting-point fibers in the yarn can be effectively controlled by adjusting the airflow pressure to 0.2-0.5 bar and the spinning speed to 1200-1600 m / min; S4, napping process: Through fine control of the napping process, the low-melting-point fiber forms a tiger-stripe effect on the yarn surface; the tension of the napping machine is controlled at 0.5~0.8N, the loop length is controlled at 3~8mm, the napping speed is 200~300m / min, and the operating temperature is maintained at 80~100℃, so that the low-melting-point fiber forms local melting and aggregation during the napping process, showing a tiger-stripe effect; S5. Heat treatment process: The low melting point fiber is locally melted by heating in stages to form a tiger stripe effect, and the yarn shape is fixed by cooling. The specific process is as follows: Heating stage 1: Under the condition of temperature range of 120℃~130℃, use hot air drying furnace or infrared heating equipment to heat, so that the low melting point fiber begins to melt, but the color-changing fiber does not stimulate its color change, and continue heating for 10~15 minutes; Heating stage 2: Raise the temperature to 130℃~150℃, continue to use hot air drying oven or infrared heating equipment to stimulate the color change of the color-changing fiber, and ensure that the low-melting-point fiber has begun to melt and combine with other fibers, and continue heating for 10~20 minutes; Cooling and shaping stage: After heating, it is cooled by air cooling or water cooling for 3 to 5 minutes, and the shaping treatment is carried out at a shaping temperature of 130°C for 20 minutes to ensure that the color effect of the color-changing fiber is stable and the melting form of the low-melting-point fiber is fixed; during the shaping treatment, the shaping temperature is 130°C for 20 minutes, and the yarn quality inspection is carried out, focusing on checking the uniformity and strength of the tiger stripe effect, as well as the mechanical properties of the yarn. Example

[0015] Raw material ratio S1. Raw material preparation and proportion: 63% conventional polyester fiber, 17% color-changing fiber, 11% wool fiber and 7% low-melting-point polyester fiber (melting point 135°C); Preparation process S2, use a carding machine, and control the feeding speed to 1050m / min, and the pressure to 3.0kg / cm²; then use a drawing frame for further carding; S3, select the ring spinning process, and control the spinning twist to 320 t / m, the spinning tension to 1.0 N, and the spinning speed to 1700 m / min; S4, control the napping machine tension to 0.65N, the loop length to 6mm, the napping speed to 260m / min, and the operating temperature to 95℃; S5. Heat treatment process: heating stage 1 (temperature is 128℃, continuous heating for 13 minutes), heating stage 2 (temperature is 142℃, continuous heating for 17 minutes), cooling and shaping stage, air cooling for 4 minutes, shaping temperature is 130℃, 20 minutes. Example

[0016] Raw material ratio S1. Raw material preparation and proportion: 60% conventional polyester fiber, 20% color-changing fiber, 10% wool fiber and 8% low-melting-point polyester fiber (melting point 125°C); Preparation process S2, use a carding machine and control the feeding speed to 1150m / min and the pressure to 2.8kg / cm²; then use a drawing frame for further carding; S3, select air spinning process, and adjust the air pressure to 0.4 bar and the spinning speed to 1500 m / min; S4, control the napping machine tension to 0.75N, the loop length to 4mm, the napping speed to 220m / min, and the operating temperature to 88℃; S5. Heat treatment process: heating stage 1 (temperature is 122℃, continuous heating for 14 minutes), heating stage 2 (temperature is 142℃, continuous heating for 12 minutes), cooling and shaping stage, cooling by water for 3.5 minutes, shaping temperature is 130℃, 20 minutes. Example

[0017] Raw material ratio S1. Raw material preparation and proportion: 65% conventional polyester fiber, 15% color-changing fiber, 12% wool fiber and 5% low-melting-point polyester fiber (melting point 145°C); Preparation process S2, use a carding machine, and control the feeding speed to 1000m / min, and the pressure to 3.2kg / cm²; then use a drawing frame for further carding; S3, select the ring spinning process, and control the spinning twist to 250 t / m, the spinning tension to 0.9 N, and the spinning speed to 1900 m / min; S4, control the napping machine tension to 0.65N, the loop length to 6mm, the napping speed to 260m / min, and the operating temperature to 95℃; S5. Heat treatment process: heating stage 1 (temperature is 130℃, continuous heating for 11 minutes), heating stage 2 (temperature is 145℃, continuous heating for 16 minutes), cooling and shaping stage, cooling by air for 4.5 minutes, shaping temperature is 130℃, 20 minutes. Example

[0018] Raw material ratio S1. Raw material preparation and proportion: 64% conventional polyester fiber, 16% color-changing fiber, 11% wool fiber and 6% low-melting-point polyester fiber (melting point 130°C); Preparation process S2, use a carding machine, and control the feeding speed to 1100m / min, and the pressure to 3.1kg / cm²; then use a drawing frame for further carding; S3, select air spinning process, and adjust the air pressure to 0.35 bar and the spinning speed to 1350 m / min; S4, control the napping machine tension to 0.70N, loop length to 5mm, napping speed to 240m / min, operating temperature to 92℃; S5. Heat treatment process: heating stage 1 (temperature is 126℃, continuous heating for 12 minutes), heating stage 2 (temperature is 140℃, continuous heating for 18 minutes), cooling and shaping stage, cooling by water for 3 minutes, shaping temperature is 130℃, 20 minutes. Example

[0019] Raw material ratio S1. Raw material preparation and proportion: 62% conventional polyester fiber, 19% color-changing fiber, 10% wool fiber and 7% low-melting-point polyester fiber (melting point 140°C); Preparation process S2, use a carding machine, and control the feeding speed to 1200m / min, and the pressure to 2.9kg / cm²; then use a drawing frame for further carding; S3, select the ring spinning process, and control the spinning twist to 280 t / m, the spinning tension to 0.85 N, and the spinning speed to 1600 m / min; S4, control the napping machine tension to 0.60N, the loop length to 8mm, the napping speed to 270m / min, and the operating temperature to 97℃; S5. Heat treatment process: heating stage 1 (temperature is 127℃, continuous heating for 10 minutes), heating stage 2 (temperature is 147℃, continuous heating for 15 minutes), cooling and shaping stage, cooling by air for 5 minutes, shaping temperature is 130℃, 20 minutes. Example

[0020] Raw material ratio S1. Raw material preparation and proportion: 61% conventional polyester fiber, 18% color-changing fiber, 11% wool fiber and 8% low-melting-point polyester fiber (melting point 128°C); Preparation process S2, use a carding machine, and control the feeding speed to 1080m / min, and the pressure to 3.3kg / cm²; then use a drawing frame for further carding; S3, select air spinning process, and adjust the air pressure to 0.3 bar and the spinning speed to 1400 m / min; S4, control the napping machine tension to 0.50N, the loop length to 3mm, the napping speed to 300m / min, and the operating temperature to 100℃; S5. Heat treatment process: heating stage 1 (temperature is 124℃, continuous heating for 15 minutes), heating stage 2 (temperature is 144℃, continuous heating for 19 minutes), cooling and shaping stage, cooling by water for 4 minutes, shaping temperature is 130℃, 20 minutes. Example

[0021] Raw material ratio S1. Raw material preparation and proportion: 65% conventional polyester fiber, 16% color-changing fiber, 12% wool fiber and 1% low-melting-point polyester fiber (melting point 138°C); Preparation process S2, use a carding machine, and control the feeding speed to 1120m / min, and the pressure to 3.4kg / cm²; then use a drawing frame for further carding; S3, select the ring spinning process, and control the spinning twist to 220 t / m, the spinning tension to 1.1 N, and the spinning speed to 1850 m / min; S4, control the napping machine tension to 0.72N, the loop length to 4.5mm, the napping speed to 230m / min, and the operating temperature to 89℃; S5. Heat treatment process: heating stage 1 (temperature is 129℃, continuous heating for 12 minutes), heating stage 2 (temperature is 146℃, continuous heating for 14 minutes), cooling and shaping stage, cooling by air for 3.5 minutes, shaping temperature is 130℃, 20 minutes. Example

[0022] Raw material ratio S1. Raw material preparation and proportion: 63% conventional polyester fiber, 15% color-changing fiber, 12% wool fiber and 7% low-melting-point polyester fiber (melting point 142°C); Preparation process S2, use a carding machine, and control the feeding speed to 1020m / min, and the pressure to 2.7kg / cm²; then use a drawing frame for further carding; S3, select air spinning process, and adjust the air pressure to 0.45 bar and the spinning speed to 1650 m / min; S4, control the napping machine tension to 0.68N, the loop length to 6mm, the napping speed to 210m / min, and the operating temperature to 91℃; S5. Heat treatment process: heating stage 1 (temperature is 125℃, continuous heating for 14 minutes), heating stage 2 (temperature is 149℃, continuous heating for 11 minutes), cooling and shaping stage, cooling by water for 3.8 minutes, shaping temperature is 130℃, 20 minutes. Example

[0023] Raw material ratio S1. Raw material preparation and proportion: 60% conventional polyester fiber, 17% color-changing fiber, 11% wool fiber and 8% low-melting-point polyester fiber (melting point 132°C); Preparation process S2, use a carding machine and control the feeding speed to 1180m / min and the pressure to 3.0kg / cm²; then use a drawing frame for further carding; S3, select the ring spinning process, and control the spinning twist to 270 t / m, the spinning tension to 0.88 N, and the spinning speed to 2000 m / min; S4, control the napping machine tension to 0.58N, the loop length to 7.5mm, the napping speed to 280m / min, and the operating temperature to 96℃; S5. Heat treatment process: heating stage 1 (temperature is 128℃, continuous heating for 10 minutes), heating stage 2 (temperature is 143℃, continuous heating for 17 minutes), cooling and shaping stage, cooling by air for 4.2 minutes, shaping temperature is 130℃, 20 minutes.

[0024] Embodiment 10: Raw material ratio S1. Raw material preparation and proportion: 64% conventional polyester fiber, 19% color-changing fiber, 10% wool fiber and 5% low-melting-point polyester fiber (melting point 140°C); Preparation process S2, use a carding machine, and control the feeding speed to 1050m / min, and the pressure to 3.0kg / cm²; then use a drawing frame for further carding; S3, select the ring spinning process, and control the spinning twist to 290 t / m, the spinning tension to 0.9 N, and the spinning speed to 1750 m / min; S4, control the napping machine tension to 0.62N, the loop length to 7.2mm, the napping speed to 250m / min, and the operating temperature to 92℃; S5. Heat treatment process: heating stage 1 (temperature is 130℃, continuous heating for 13 minutes), heating stage 2 (temperature is 145℃, continuous heating for 15 minutes), cooling and shaping stage, cooling by air for 5 minutes, shaping temperature is 130℃, 20 minutes.

[0025] The present application adopts the processes of the above-mentioned embodiments 1-10 to prepare yarns respectively. After completing all the processes, the yarn quality inspection is carried out, focusing on the uniformity and strength of the tiger stripe effect. The present application adopts an industrial microscope to observe and evaluate the uniformity of the tiger stripe effect through the stereoscopic sense under the eyes, and adopts a compressive strength tester to detect the physical properties of the tiger stripe yarn material. The yarn quality inspection and tiger stripe effect analysis table are as follows: Analysis of tiger stripe effect uniformity: Excellent: In Examples 1, 3, 5, 7, 8, 9 and 10, the tiger stripe effect exhibits a high degree of uniformity. The roughening process and heat treatment process in these examples have good control over the uniformity of the tiger stripe effect.

[0026] Good: In Examples 2, 4 and 6, the uniformity of the tiger stripe effect is slightly inferior, which may be related to the setting of parameters such as the napping machine tension, loop length, napping speed or operating temperature, resulting in the tiger stripe effect being not evenly distributed on the yarn.

[0027] In general, the uniformity of tiger stripe effect can be significantly improved by optimizing the roughening and heat treatment process parameters.

[0028] Yarn strength analysis: High: The tiger stripe effect showed high strength in Examples 1, 3, 5, 7, 8, 9 and 10. The uniform distribution of the low melting point fiber in the yarn and the effective application of the napping process in these examples formed a tiger stripe effect with a strong three-dimensional sense and distinct layers.

[0029] Medium-high: In Examples 2, 4 and 6, the intensity of the tiger stripe effect is slightly inferior to the high-intensity group, but still shows good visual effects. The heat treatment parameters or roughening process parameters in these examples may need to be further optimized to improve the strength.

[0030] This application achieves a tiger stripe effect with visual depth and layering by combining low-melting-point fiber with napping technology, greatly enriching the texture performance of the yarn. The use of color-changing yarn further enhances the richness and variability of the surface texture, making the yarn present different colors and texture effects under different lighting or temperature conditions.

[0031] This application ensures the uniformity and strength of the tiger stripe effect by precisely controlling process parameters such as spinning, napping and heat treatment, thereby improving product quality and stability.

[0032] Those skilled in the art should understand that the embodiments of the present invention shown in the above description are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A method for preparing a three-dimensional tiger-pattern color-changing brushed yarn, characterized in that: The following steps are included: S1. Raw material preparation and proportioning: conventional polyester fiber, color-changing fiber, wool fiber and low-melting-point polyester fiber are mixed in a predetermined proportion, wherein the conventional polyester fiber accounts for 60% to 65%, the color-changing fiber accounts for 15% to 20%, the wool fiber accounts for 10% to 12%, and the low-melting-point polyester fiber accounts for 5% to 8%, and the melting point range of the low-melting-point polyester fiber is 120° C. to 150° C.; S2, yarn mixing and pretreatment, using a carding machine and a drawing machine to preliminarily mix and further comb the fibers to ensure that the low-melting-point fibers are locally concentrated in the yarn; S3, selecting a spinning process, including ring spinning or air spinning, and controlling the local aggregation distribution of the low-melting-point fiber by adjusting the spinning parameters; S4, napping process: through fine control of the napping process, the low melting point fiber forms a tiger stripe effect on the yarn surface; S5. Heat treatment process: The low melting point fiber is locally melted by heating in stages to form a tiger stripe effect, and the yarn shape is fixed by cooling. The specific process is as follows: Heating stage 1: Under the condition of temperature range of 120℃~130℃, use hot air drying furnace or infrared heating equipment to heat, so that the low melting point fiber begins to melt, but the color-changing fiber does not stimulate its color change, and continue heating for 10~15 minutes; Heating stage 2: Raise the temperature to 130℃~150℃, continue to use hot air drying oven or infrared heating equipment to stimulate the color change of the color-changing fiber, and ensure that the low-melting-point fiber has begun to melt and combine with other fibers, and continue heating for 10~20 minutes; Cooling and shaping stage: After heating, it is cooled by air cooling or water cooling for 3 to 5 minutes, and the shaping treatment is carried out at a shaping temperature of 130°C for 20 minutes to ensure that the color effect of the color-changing fiber is stable and the melting shape of the low-melting-point fiber is fixed.

2. The method for preparing a three-dimensional tiger-pattern color-changing brushed yarn according to claim 1, characterized in that: In the yarn mixing and pretreatment step, when using a cotton card machine for preliminary mixing, the feed speed is 1000~1200m / min and the pressure is about 2.5~3.5kg / cm² to ensure high-density aggregation of low-melting point fibers in local areas during the mixing process.

3. The method for preparing a three-dimensional tiger-pattern color-changing brushed yarn according to claim 1, characterized in that: When ring spinning is selected as the spinning process, the spinning twist is 200~400t / m, the spinning tension is about 0.8~1.2N, and the spinning speed is 1500~2000m / min. The local aggregation of low-melting-point fibers in the yarn is controlled by adjusting the twist and tension of the spinning machine.

4. The method for preparing a three-dimensional tiger-pattern color-changing brushed yarn according to claim 1, characterized in that: When air spinning is selected as the spinning process, the local aggregation and distribution of low-melting-point fibers in the yarn can be effectively controlled by adjusting the air flow pressure to 0.2-0.5 bar and the spinning speed to 1200-1600 m / min.

5. The method for preparing a three-dimensional tiger-pattern color-changing brushed yarn according to claim 1, characterized in that: In the napping process, the tension of the napping machine is controlled at 0.5~0.8N, the loop length is controlled at 3~8mm, the napping speed is 200~300m / min, and the operating temperature is maintained at 80~100℃, so that the low-melting point fiber is partially melted and aggregated during the napping process, showing a tiger-striped effect.

6. The method for preparing a three-dimensional tiger-pattern color-changing brushed yarn according to claim 1, characterized in that: In the final processing and inspection steps, a setting treatment is carried out at a setting temperature of 130°C for 20 minutes, and a yarn quality inspection is carried out, focusing on checking the uniformity and strength of the tiger stripe effect, as well as the mechanical properties of the yarn.