A method for manufacturing a multi-functional blended staple yarn

Abstract

This invention relates to the field of textile technology, specifically to a method for preparing a multifunctional blended staple fiber yarn. The method involves sequentially processing Y-shaped polyester staple fibers and serrated viscose staple fibers through opening and cleaning, carding, three drawing processes, roving, spinning, and winding to obtain the multifunctional blended staple fiber yarn. The polyester staple fibers contain zinc oxide and jade powder, and the viscose staple fibers contain zinc oxide. The mass ratio of polyester staple fibers to viscose staple fibers in the multifunctional blended staple fiber is 11:9 to 4:1. The resulting staple fiber yarn combines moisture absorption and quick-drying properties, antibacterial and bacteriostatic effects, and a cooling sensation. It can quickly absorb and expel sweat and moisture produced by the body during exercise, keeping the body comfortable, dry, and cool, while also resisting and eliminating bacterial invasion.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and specifically to a method for preparing multifunctional blended staple fiber yarn. Background Technology

[0002] With the continuous development of modern society, people are increasingly treasuring a positive, comfortable, and healthy life and a healthy body. In addition to fast-paced and high-intensity work, people seek a high-quality leisure lifestyle, and comfortable clothing is one of the important conditions for achieving this. The multifunctionality of clothing fabrics, such as moisture-wicking, quick-drying, breathability, antibacterial and bacteriostatic properties, deodorization, and cooling sensation, has been favored and sought after by people.

[0003] Currently, most functional yarns on the market are single-function yarns, while multi-functional short-fiber yarns remain extremely rare. Chinese invention patent application number 202011593623.6 discloses a method for preparing moisture-wicking knitted fabrics, using ultrafine viscose fiber and polyester fiber as raw materials, with a blending ratio of 60% viscose fiber to 40% polyester fiber, and employing a modified Sirospinning technique for spinning. This preparation method uses a blend of ultrafine viscose and irregularly shaped cross-section polyester fibers, resulting in good moisture-wicking properties. However, this blended yarn is a single-function yarn, failing to meet the requirements for multi-functionality, and its moisture-wicking properties still have room for improvement. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for preparing a multifunctional blended short fiber yarn that simultaneously possesses moisture-wicking, antibacterial, and cooling properties.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a method for preparing multifunctional blended short fiber yarn, wherein polyester short fiber with a Y-shaped cross-section and viscose short fiber with a serrated cross-section are sequentially processed through opening and cleaning, carding, three drawing processes, roving process, spinning process and winding process to prepare multifunctional blended short fiber yarn.

[0006] The polyester staple fiber contains zinc oxide and jade powder, and the viscose staple fiber contains zinc oxide; the mass ratio of polyester staple fiber to viscose staple fiber in the multifunctional blended staple fiber is 11:9 to 4:1.

[0007] The beneficial effects of this invention are as follows: The short-fiber yarn prepared by this invention combines moisture-wicking, quick-drying, antibacterial, and cooling properties. It can quickly absorb and expel sweat and moisture produced by the human body during exercise, keeping the body comfortable, dry, and cool, while also resisting and eliminating bacterial invasion. This invention uses a Y-shaped cross-section polyester short fiber and a serrated cross-section viscose short fiber for blending. Due to the significant difference in the cross-sectional structure of the two fibers, the polyester short fiber, which has moisture-wicking, cooling, and antibacterial functions, is located in the outer layer of the yarn, while the viscose short fiber, which has antibacterial and moisture-wicking functions, is located in the inner layer of the yarn, thus better leveraging the effects of both. Attached Figure Description

[0008] Figure 1 The figure shown is a cross-sectional view of viscose short fibers in a specific embodiment of the present invention;

[0009] Figure 2 The image shown is a cross-sectional view of polyester staple fiber in a specific embodiment of the present invention. Detailed Implementation

[0010] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0011] Please refer to Figure 1 as well as Figure 2 A method for preparing multifunctional blended staple fiber yarn involves sequentially processing polyester staple fiber with a Y-shaped cross-section and viscose staple fiber with a serrated cross-section through opening and cleaning, carding, three drawing processes, roving, spinning and winding to obtain multifunctional blended staple fiber yarn.

[0012] Polyester staple fiber contains zinc oxide and jade powder, while viscose staple fiber contains zinc oxide; the mass ratio of polyester staple fiber to viscose staple fiber in multifunctional blended staple fiber is 11:9 to 4:1.

[0013] As can be seen from the above description, the beneficial effects of this invention are as follows: This invention uses a Y-shaped cross-section polyester staple fiber and a serrated cross-section viscose staple fiber for blending. Due to the significant differences in the cross-sectional structures of the two fibers, polyester has a Y-shaped cross-section, high anisotropy, high fiber bending stiffness, is not easily bent, has low centripetal pressure, and is not easily transferred inwards, thus it is easily distributed on the outer layer of the yarn after blending. Therefore, zinc oxide and jade powder are added to the polyester staple fiber to give it antibacterial and bacteriostatic properties and a cooling sensation upon contact. At the same time, the proportion of polyester staple fiber is increased, and the polyester staple fiber wraps around the viscose staple fiber. Since the porosity of the Y-shaped polyester staple fiber reaches 40%, which is much higher than that of a circular cross-section, it provides capillary channels for sweat to flow, resulting in advantages such as light weight, quick-drying, easy washing and quick drying, and excellent breathability. Viscose has low anisotropy, is easy to bend, and has low movement resistance, so the fibers are easily distributed in the inner layer of the yarn after blending. Zinc oxide is added to viscose to prevent the inner viscose from easily absorbing sweat and breeding bacteria. The cross-section of viscose staple fiber has a serrated structure and multiple grooves on the surface, which further facilitates the expulsion of sweat. The moisture regain of viscose staple fiber is as high as 13%, which is conducive to absorbing sweat and keeping the clothing at a certain level of humidity.

[0014] The short fiber yarn prepared by this invention combines moisture absorption, quick drying, antibacterial and bacteriostatic properties with a cooling sensation. It can quickly absorb and expel the sweat and moisture produced by the human body during exercise, keeping the body comfortable, dry and cool, while also resisting and eliminating bacterial invasion of the human body.

[0015] Furthermore, the fineness of the polyester staple fiber is 1.1 to 1.3D.

[0016] As can be seen from the above description, the fineness of polyester staple fiber is 1.1 to 1.3D, which is softer than ordinary polyester.

[0017] Furthermore, the polyester staple fiber is opened and cleaned to obtain the first roll, and the viscose staple fiber is opened and cleaned to obtain the second roll. The fixed weight of the first roll and the second roll is 360-390 g / m.

[0018] Furthermore, the licker-in speed during polyester staple fiber carding is 850–870 rpm, the cylinder speed is 320–340 rpm, and the sliver weight is 14–16 g / 5m.

[0019] Furthermore, the licker-in speed during viscose staple fiber carding is 735–755 rpm, the cylinder speed is 290–310 rpm, and the sliver weight is 15–17 g / 5m.

[0020] As described above, due to the addition of functional particles to both types of fibers, the individual fiber strength is relatively low, making them susceptible to damage during processing. Therefore, using a low basis weight, low speed, and a larger flathead spacing during carding helps reduce fiber damage.

[0021] Furthermore, the three-stage merging includes the first merging, the second merging, and the last merging, performed sequentially.

[0022] As can be seen from the above description, after three drawing processes, the parallelism, straightness and evenness of the fibers are greatly improved, and the two types of fibers are evenly mixed, which ensures the smooth processing of subsequent processes.

[0023] Furthermore, the post-draw ratio of the head-drawing strip is 1.5 to 1.81, and the total draw ratio is 5.3 to 5.8.

[0024] As can be seen from the above description, using a larger post-drawing ratio in the first drawing can effectively eliminate fiber hooks and improve fiber straightness and parallelism. Using a smaller total draw ratio is conducive to the full mixing of the two fibers and reduces fiber damage.

[0025] Furthermore, the post-draw ratio of the two-component combination is 1.25 to 1.35, and the total draw ratio is 7.50 to 7.88.

[0026] As can be seen from the above description, the lower post-drawing ratio of the two-component fiber is beneficial for improving yarn evenness and better controlling fiber movement. The lower total draw ratio is conducive to the full mixing of the two fibers and reduces fiber damage.

[0027] Furthermore, the post-draw ratio of the final product is 1.25 to 1.35, and the total draw ratio is 8.80 to 9.00.

[0028] As can be seen from the above description, the increased total stretch at the end of the process helps to reduce the stretching burden on subsequent processes.

[0029] Furthermore, the ratio of polyester staple fiber to viscose staple fiber in the head-to-head assembly is 2:1.

[0030] Furthermore, the twist coefficient of the spinning process is 320–330.

[0031] As can be seen from the above description, a smaller twist coefficient in the fine spinning process results in softer yarn.

[0032] Embodiment 1 of the present invention is a method for preparing a multifunctional blended staple fiber yarn, comprising the following steps:

[0033] S1: Made of polyester staple fiber with a Y-shaped cross-section (refer to...) Figure 2 ) and viscose short fibers with a serrated cross-section (refer to Figure 1 The raw materials are polyester staple fiber containing 3% zinc oxide and 3% jade powder by mass (the remainder is polyester staple fiber), and viscose staple fiber is Antaibei antibacterial viscose, which also contains zinc oxide; the mass ratio of polyester staple fiber to viscose staple fiber is 2:1, the specification of polyester staple fiber is 1.2D*38mm, and the specification of Antaibei antibacterial viscose is 1.5D*38mm.

[0034] S2: Perform opening and cleaning of cotton. During opening and cleaning, reduce the spacing of the remaining dust bars: 8mm*6mm for the comb needles and 6mm for the composite, to reduce the amount of material falling off. The polyester staple fiber is rolled up after opening and cleaning, with a fixed weight of 385g / m. The Antaibei antibacterial viscose is rolled up after opening and cleaning, with a fixed weight of 385g / m.

[0035] S3: Carding is performed using a light weight, low speed, and a larger flatbed spacing to reduce fiber damage. For polyester staple fiber carding, the flatbed spacing is 0.28mm, 0.25mm, 0.23mm, and 0.25mm, the licker-in speed is 860 rpm, the cylinder speed is 330 rpm, the flatbed speed is 102 rpm, the doffer speed is 28 rpm, and the sliver weight is 15.5g / 5m. For viscose staple fiber carding, the flatbed spacing is 0.23mm, 0.20mm, 0.20mm, and 0.23mm, the licker-in speed is 745 rpm, the cylinder speed is 300 rpm, the flatbed speed is 102 rpm, the doffer speed is 28 rpm, and the sliver weight is 16.66g / 5m.

[0036] S4: Perform three merges, which include the first merge, the second merge, and the last merge in sequence;

[0037] The number of slivers combined is 6. The two types of slivers are discharged in the order of polyester, viscose, polyester, polyester, viscose, polyester. The post-draw ratio is 1.79, the total draw ratio is 5.6 times, the roller spacing is 12mm*20mm, and the sliver weight is 17.0g / 5m.

[0038] The number of strands combined in the second phase is 8, the post-draw ratio is 1.35, the total draw ratio is 7.80, the roller spacing is 12mm*20mm, and the strip weight is 17.5g / 5m.

[0039] The final number of slivers is 8, the post-draw ratio is 1.35, the total draw ratio is 8.88, the roller spacing is 11mm*19mm, and the strip weight is 15.5g / 5m.

[0040] S5: Perform the roving process. The roving weight is 3.50g / 10m, the draft ratio after roving is 1.24, the total draft is 8.85 times, and the twist coefficient is 75.

[0041] S6: Perform the spinning process. The front spacing of the spinning process is 21mm, the back spacing is 42mm, the total draft is 49.09 times, the back draft ratio is 1.18, the twist coefficient is 325, the center distance of the double-hole bell mouth is 5mm, and heavy pressure is used: 176CN*100CN*140CN.

[0042] S7: Winding is performed, and multifunctional blended short fiber yarn is prepared after winding; the winding speed is 900, the electro-cleaning parameters are 150%*2cm, the long thick place is +60%*20cm, and the thin place is -60%*20cm.

[0043] The mechanical properties of the multifunctional blended staple fiber yarn prepared in Example 1 were tested, and the test results are shown in Table 1. The moisture absorption and wicking and antibacterial properties of the multifunctional blended staple fiber yarn were tested, and the test results are shown in Table 2.

[0044] Table 1

[0045]

[0046] Table 2

[0047]

[0048]

[0049] As shown in Tables 1 and 2, the multifunctional blended short fiber yarn prepared by the preparation method of the present invention has good antibacterial and moisture-wicking effects, and has high breaking strength and less hairiness.

[0050] Embodiment 2 of the present invention is a method for preparing a multifunctional blended staple fiber yarn, comprising the following steps:

[0051] S1: Made from Y-shaped polyester staple fiber and serrated viscose staple fiber, the polyester staple fiber contains 3% zinc oxide and 3% jade powder by mass. The viscose staple fiber is Antaibei antibacterial viscose, which also contains zinc oxide. The mass ratio of polyester staple fiber to viscose staple fiber in the multifunctional blended staple fiber is 11:9. The specification of the polyester staple fiber is 1.2D*38mm, and the specification of Antaibei antibacterial viscose is 1.5D*38mm.

[0052] S2: Perform opening and cleaning of cotton. During opening and cleaning, reduce the spacing of the remaining dust bars: 8mm*6mm for the comb needles and 6mm for the composite, to reduce the amount of material falling off. Polyester staple fiber is rolled up after opening and cleaning, with a fixed weight of 360g / m. Antaibe antibacterial viscose is rolled up after opening and cleaning, with a fixed weight of 360g / m.

[0053] S3: Carding is performed using a light weight, low speed, and a larger flatbed spacing to reduce fiber damage. For polyester staple fiber carding, the flatbed spacing is 0.28mm, 0.25mm, 0.23mm, and 0.25mm, the licker-in speed is 850-870 rpm, the cylinder speed is 320 rpm, the flatbed speed is 102 rpm, the doffer speed is 28 rpm, and the sliver weight is 14g / 5m. For viscose staple fiber carding, the flatbed spacing is 0.23mm, 0.20mm, 0.20mm, and 0.23mm, the licker-in speed is 7355 rpm, the cylinder speed is 2900 rpm, the flatbed speed is 102 rpm, the doffer speed is 28 rpm, and the sliver weight is 15g / 5m.

[0054] S4: Perform three merges, which include the first merge, the second merge, and the last merge in sequence;

[0055] The number of slivers combined is 6. The two types of slivers are discharged in the order of polyester, viscose, polyester, polyester, viscose, polyester. The post-draw ratio is 1.5, the total draw ratio is 5.8, the roller spacing is 12mm*20mm, and the sliver weight is 17.0g / 5m.

[0056] The number of strands combined in the second phase is 8, the post-draw ratio is 1.25, the total draw ratio is 7.88, the roller spacing is 12mm*20mm, and the strip weight is 17.5g / 5m.

[0057] The final number of slivers is 8, the post-draw ratio is 1.25, the total draw ratio is 9.00, the roller spacing is 11mm*19mm, and the strip weight is 15.5g / 5m.

[0058] S5: Perform the roving process. The roving weight is 3.50g / 10m, the draft ratio after roving is 1.24, the total draft is 8.85 times, and the twist coefficient is 75.

[0059] S6: Perform the spinning process. The front spacing of the spinning process is 21mm, the back spacing is 42mm, the total draft is 49.09 times, the back draft ratio is 1.18, the twist coefficient is 325, the center distance of the double-hole bell mouth is 5mm, and heavy pressure is used: 176CN*100CN*140CN.

[0060] S7: Perform winding at a speed of 900 rpm. The electrical cleaning parameters are 150%*2cm, with thick sections +60%*20cm and thin sections -60%*20cm.

[0061] Embodiment 3 of the present invention is a method for preparing a multifunctional blended staple fiber yarn, comprising the following steps:

[0062] S1: Made from Y-shaped polyester staple fiber and serrated viscose staple fiber, the polyester staple fiber contains 3% zinc oxide and 3% jade powder by mass. The viscose staple fiber is Antaibei antibacterial viscose, which also contains zinc oxide. The mass ratio of polyester staple fiber to viscose staple fiber in the multifunctional blended staple fiber is 4:1. The specification of the polyester staple fiber is 1.2D*38mm, and the specification of Antaibei antibacterial viscose is 1.5D*38mm.

[0063] S2: Perform opening and cleaning of cotton. During opening and cleaning, reduce the spacing of the remaining dust bars: comb needles 8mm*6mm, total 6mm, to reduce falling particles; polyester staple fiber is rolled into rolls after opening and cleaning, with a fixed weight of 390g / m; Antaibe antibacterial viscose is rolled into rolls after opening and cleaning, with a fixed weight of 390g / m.

[0064] S3: Carding is performed using a light weight, low speed, and a larger flatbed spacing to reduce fiber damage. For polyester staple fiber carding, the flatbed spacing is 0.28mm, 0.25mm, 0.23mm, and 0.25mm, the licker-in speed is 850-870 rpm, the cylinder speed is 340 rpm, the flatbed speed is 102 rpm, the doffer speed is 28 rpm, and the sliver weight is 16g / 5m. For viscose staple fiber carding, the flatbed spacing is 0.23mm, 0.20mm, 0.20mm, and 0.23mm, the licker-in speed is 755 rpm, the cylinder speed is 310 rpm, the flatbed speed is 102 rpm, the doffer speed is 28 rpm, and the sliver weight is 17g / 5m.

[0065] S4: Perform three merges, which include the first merge, the second merge, and the last merge in sequence;

[0066] The number of slivers combined is 6. The two types of slivers are discharged in the order of polyester, viscose, polyester, polyester, viscose, polyester. The post-draw ratio is 1.81, the total draw ratio is 5.3 times, the roller spacing is 12mm*20mm, and the sliver weight is 17.0g / 5m.

[0067] The number of strands combined in the second phase is 8, the post-draw ratio is 1.35, the total draw ratio is 7.50, the roller spacing is 12mm*20mm, and the strip weight is 17.5g / 5m.

[0068] The final number of slivers is 8, the post-draw ratio is 1.35, the total draw ratio is 8.80, the roller spacing is 11mm*19mm, and the strip weight is 15.5g / 5m.

[0069] S5: Perform the roving process. The roving weight is 3.50g / 10m, the draft ratio after roving is 1.24, the total draft is 8.85 times, and the twist coefficient is 75.

[0070] S6: Perform the spinning process. The front spacing of the spinning process is 21mm, the back spacing is 42mm, the total draft is 49.09 times, the back draft ratio is 1.18, the twist coefficient is 325, the center distance of the double-hole bell mouth is 5mm, and heavy pressure is used: 176CN*100CN*140CN.

[0071] S7: Perform winding at a speed of 900 rpm. The electrical cleaning parameters are 150%*2cm, with thick sections +60%*20cm and thin sections -60%*20cm.

[0072] Comparative Example 1 of the present invention is:

[0073] The only difference between Comparative Example 1 and Example 1 is that the cross-section of the polyester staple fiber is serrated.

[0074] The properties of the yarn prepared in Comparative Example 1 were tested, and the test results are shown in Table 3.

[0075] Table 3

[0076]

[0077]

[0078] Comparing Tables 2 and 3, it can be seen that the moisture absorption and quick-drying performance of the serrated cross-section polyester staple fiber / serrated cross-section viscose staple fiber is inferior to that of the Y-type cross-section polyester staple fiber / serrated cross-section viscose staple fiber of this application. One major reason is that the quick-drying effect of the serrated cross-section is inherently lower than that of the Y-type cross-section. Another minor reason is that the structure of the serrated cross-section polyester staple fiber is similar to that of the serrated cross-section viscose, and the fiber fineness is finer than that of viscose, making it difficult to distribute on the outside of the yarn to form an encapsulation structure. Therefore, more viscose staple fibers are exposed outside the yarn, resulting in poor quick-drying performance.

[0079] In summary, the preparation method provided by this invention involves blending polyester staple fibers with a Y-shaped cross-section and viscose staple fibers with a serrated cross-section. Due to the significant differences in the cross-sectional structures of the two fibers, the blended polyester staple fibers tend to distribute on the outer layer of the yarn. Therefore, zinc oxide and jade powder are added to the polyester staple fibers to achieve antibacterial and cooling properties, and the Y-shaped cross-section enhances perspiration wicking. The blended viscose staple fibers tend to distribute on the inner layer of the yarn. The addition of zinc oxide to the viscose prevents the inner viscose from easily absorbing sweat and promoting bacterial growth. The viscose staple fibers effectively absorb sweat, improving moisture absorption.

[0080] The yarn is made softer by controlling the fineness of the polyester staple fibers and the twist coefficient of the spinning process. Because functional particles are added to both fibers, they are easily damaged during processing; therefore, a low basis weight, low speed, and a large flathead spacing are used during carding to reduce fiber damage. The preparation method of this invention, after three drawing operations, can significantly improve fiber parallelism, straightness, and evenness.

[0081] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method of manufacturing a multi-functional blended staple yarn, characterized by, Polyester staple fibers with Y-shaped cross section and viscose staple fibers with sawtooth-shaped cross section are sequentially subjected to opening and cleaning, carding, three times of drawing, roving process, spinning process and bobbin winding to prepare multifunctional blended staple yarn, wherein the polyester staple fibers wrap the viscose staple fibers; The polyester staple fibers contain zinc oxide and jade powder, and the viscose staple fibers contain zinc oxide; the mass ratio of the polyester staple fibers to the viscose staple fibers in the multifunctional blended staple yarn is 11:9-4:1; The speed of the taker-in during carding of the polyester staple fibers is 850-870 rpm, the speed of the cylinder is 320-340 rpm, and the strip weight is 14-16 g / 5 m; the speed of the taker-in during carding of the viscose staple fibers is 735-755 rpm, the speed of the cylinder is 290-310 rpm, and the strip weight is 15-17 g / 5 m; The three times of drawing include sequentially performed head drawing, second drawing and end drawing, the back draft ratio of the head sliver is 1.5-1.81, and the total draft is 5.3-5.8 times; the back draft ratio of the second drawing is 1.25-1.35, and the total draft is 7.50-7.88 times; the back draft ratio of the end drawing is 1.25-1.35, and the total draft is 8.80-9.00 times.

2. The method for preparing multifunctional blended staple fiber yarn according to claim 1, characterized in that, The fineness of the polyester staple fibers is 1.1-1.3 D.

3. The method for preparing multifunctional blended staple fiber yarn according to claim 1, characterized in that, The ratio of the number of the polyester staple fibers to the viscose staple fibers during the head drawing is 2:

1.

4. The method for preparing multifunctional blended staple fiber yarn according to claim 1, characterized in that, The twisting factor of the spinning process is 320-330.

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