Antibacterial environment-friendly breathable blended yarn and preparation method thereof

Abstract

The invention belongs to the technical field of blended yarns, and provides an antibacterial environment-friendly breathable blended yarn and a preparation method thereof. The blended yarn is prepared from the following raw materials: tencel fiber, linen fiber and modal fiber in a mass ratio of (25-30): (20-25): (20-25). According to the invention, the fiber variety causes little pollution to the environment, the organic combination of functional protection and environmental protection is realized, and the yarn is a green and environment-friendly yarn with a protection function; according to the invention, various fibers are reasonably selected for blending, and the proportion of each fiber is controlled, so that the environment-friendly, breathable, antibacterial and mechanical blended yarn with good mechanical properties is obtained; the blended yarn is good in evenness, detail and slub indexes, high in single yarn strength, compact in structure, good in wear resistance, little in hairiness and smooth in yarn, and fabric prepared from the blended yarn is high in quality and breaking strength.

Description

Technical Field

[0001] The invention relates to the technical field of blended yarns, and in particular to an antibacterial, environmentally friendly, breathable blended yarn and a preparation method thereof. Background Art

[0002] Natural plant fiber is a green and environmentally friendly fiber material, and has the ability to resist fungal erosion and parasitism. The textiles made have certain antibacterial properties and can meet most of people's needs for green, environmentally friendly and antibacterial textiles. However, the textiles obtained by spinning natural plant fibers are not strong, the cohesion between fibers is poor, and the fibers are prone to breakage during the spinning process. In addition, the pores and cavity structures on natural plant fibers provide a place for the reproduction of anaerobic bacteria, and the obtained textiles have poor antibacterial properties.

[0003] At present, people's demand for textiles is becoming more and more diversified. The demand for textiles is not limited to warmth, fashion, comfort, etc., but more of a trend is towards health, hygiene, and intelligence. However, a single fiber is difficult to meet people's needs. Blended yarn is a yarn spun from two or more fibers. It can make up for the shortcomings of a single textile material and reflect the superiority of each component fiber to improve the wearing function of the fabric and expand its scope of application. Blending of different types of fibers is widely used in the textile field as a common method to improve fiber properties. Blending natural fibers with high-performance fibers can not only expand the application field of natural fibers and increase the added value of natural fibers, but also is an important means to improve the performance of high-performance fibers and reduce the price of high-performance fiber products. Compared with pure natural fibers and high-performance fibers, blended products have strong advantages in performance and price.

[0004] The existing blended fibers have the problems of large pollution, poor environmental performance, and difficulty in taking both mechanical properties and air permeability into consideration. Therefore, it is of great value to study an antibacterial, environmentally friendly and breathable blended yarn that improves the mechanical properties of the blended yarn. Summary of the invention

[0005] The purpose of the present invention is to provide an antibacterial, environmentally friendly and breathable blended yarn and a preparation method thereof in view of the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] The invention provides an antibacterial, environmentally friendly and breathable blended yarn. The raw materials for preparing the blended yarn include tencel fiber, flax fiber and modal fiber. The mass ratio of the tencel fiber, flax fiber and modal fiber is 25-30:20-25:20-25.

[0008] The present invention also provides a method for preparing the antibacterial, environmentally friendly and breathable blended yarn, comprising the following steps:

[0009] 1) mixing tencel fiber, flax fiber and modal fiber and spraying oil agent on the mixture to obtain pretreated fiber;

[0010] 2) The pretreated fibers are sequentially subjected to cotton opening, carding, drawing, roving, spinning, and winding to obtain antibacterial, environmentally friendly, and breathable blended yarns.

[0011] Preferably, the oil agent in step 1) comprises oil and sodium chloride solution, the mass ratio of oil to sodium chloride solution is 1:4-7, the mass concentration of sodium chloride solution is 0.3-0.5 g / L; and the spraying frequency is 10-15 mL / min.

[0012] Preferably, in the carding process of step 2), the basis weight of the carded sliver is 15 to 20 g / 5 m;

[0013] The gauge between the cylinder roller and the licker-in roller is 0.16-0.20 mm, the gauge between the cylinder roller and the cover plate is 0.20-0.25 m, and the gauge between the cylinder roller and the doffer roller is 0.1-0.15 mm.

[0014] The speed of the cylinder roller is 200-230r / min, the speed of the licker-in roller is 600-700r / min, and the speed of the doffer is 15-20r / min.

[0015] Preferably, the drawing of the strips in step 2) includes a head drawing and a tail drawing, the weight of the head drawing is 16-20g / 5m, the weight of the tail drawing is 14-17g / 5m, the drafting multiples of the head drawing and the tail drawing are 8-10, the strip output speed of the head drawing is 220-260m / min, and the strip output speed of the tail drawing is 150-170m / min.

[0016] Preferably, in the roving process of step 2), the roller gauge is 40 mm×40 mm×45 mm, the jaw gauge is 10-14 mm, the twist of the yarn is 80-90, and the machine speed is 160-180 m / min.

[0017] Preferably, in the spinning process of step 2), the roller gauge is 18 mm×25 mm, the draft multiple is 30-35, and the jaw gauge is 5-8 mm.

[0018] The present invention also provides antibacterial, environmentally friendly and breathable blended yarn prepared by the preparation method.

[0019] The beneficial effects of the present invention include the following:

[0020] 1) The Tencel fiber of the present invention has excellent air permeability and moisture permeability, natural luster, smooth hand feel, good dimensional stability, environmental protection characteristics, excellent hygroscopicity, high strength and durability, and good biodegradability; Modal fiber has excellent softness, hygroscopicity, air permeability and dyeability; flax fiber has excellent moisture absorption and air permeability, antibacterial and environmental protection properties; the fiber types of the present invention have very little environmental pollution, realize the organic combination of functional protection and environmental protection, and are green and environmentally friendly protective functional yarns, which can have broad application prospects in the fields of health textiles, clothing textiles, medical materials, facial mask substrates, etc.

[0021] 2) The present invention reasonably selects a variety of fiber blends and controls the proportion of each fiber to obtain a blended yarn that is environmentally friendly, breathable, antibacterial and has good mechanical properties; the blended yarn has good yarn evenness, fine details and thick sections, high single yarn strength, compact structure, good wear resistance, less hairiness, smooth yarn, and the fabric prepared from the blended yarn is of high quality and high breaking strength. DETAILED DESCRIPTION

[0022] The invention provides an antibacterial, environmentally friendly and breathable blended yarn. The raw materials for preparing the blended yarn include tencel fiber, flax fiber and modal fiber. The mass ratio of the tencel fiber, flax fiber and modal fiber is 25-30:20-25:20-25.

[0023] In the present invention, the mass ratio of tencel fiber, flax fiber and modal fiber is preferably 26-29:21-24:21-24, and more preferably 27-28:22-23:22-23.

[0024] In the present invention, the moisture absorption and air permeability of flax fiber is more than 3 times that of cotton fiber. Flax fiber is famous for its high strength and good moisture absorption. It absorbs and releases moisture quickly and can quickly adjust the temperature of the surface layer of human skin. In addition, the air permeability of flax fiber is extremely high, and the air permeability ratio reaches more than 25%, which can provide a good heat dissipation effect in hot summer.

[0025] The present invention also provides a method for preparing the antibacterial, environmentally friendly and breathable blended yarn, comprising the following steps:

[0026] 1) mixing tencel fiber, flax fiber and modal fiber and spraying oil agent on the mixture to obtain pretreated fiber;

[0027] 2) The pretreated fibers are sequentially subjected to cotton opening, carding, drawing, roving, spinning, and winding to obtain antibacterial, environmentally friendly, and breathable blended yarns.

[0028] In the present invention, the oil agent in step 1) preferably comprises oil and sodium chloride solution, the mass ratio of oil to sodium chloride solution is preferably 1:4-7, more preferably 1:5-6, the mass concentration of sodium chloride solution is preferably 0.3-0.5 g / L, more preferably 0.35-0.45 g / L, more preferably 0.4 g / L; the spraying frequency is preferably 10-15 mL / min, more preferably 11-14 mL / min, more preferably 12-13 mL / min.

[0029] In the present invention, the main functions of oil spraying in the carding process include reducing flying waste, improving the carding effect of fibers, reducing static electricity and improving the working environment; the sprayed sodium chloride solution makes the fiber surface rougher, which is conducive to the entanglement between fibers, reduces the generation of hairiness, and prevents the occurrence of phenomena such as winding around leather rings and leather rollers during spinning.

[0030] In the cotton opening and cleaning process of the present invention, the beater speed is preferably 450-530 r / min, more preferably 470-510 r / min, more preferably 490-500 r / min; the cotton roll roller speed is preferably 6-10 r / min, more preferably 7-9 r / min, more preferably 8 r / min.

[0031] In the present invention, cotton opening and cleaning is mainly to loosen the raw fiber into small fiber bundles, and a cotton cleaning machine is mainly used to remove impurities, defects and short fibers that are difficult to spin in the fibers, so as to ensure a smooth process in the subsequent spinning process, and the blended yarn obtained by spinning can have good mechanical properties and antibacterial properties.

[0032] In the present invention, in the carding process of step 2), the basis weight of the carded sliver is preferably 15 to 20 g / 5 m, more preferably 16 to 19 g / 5 m, and more preferably 17 to 18 g / 5 m;

[0033] The gauge between the cylinder roller and the licker-in roller is preferably 0.16-0.20 mm, more preferably 0.17-0.19 mm, and more preferably 0.18 mm; the gauge between the cylinder roller and the cover plate is preferably 0.20-0.25 mm, and the gauge between the cylinder roller and the doffer roller is preferably 0.1-0.15 mm, more preferably 0.11-0.14 mm, and more preferably 0.12-0.13 mm;

[0034] The speed of the cylinder roller is preferably 200-230 r / min, more preferably 210-220 r / min, the speed of the licker-in roller is preferably 600-700 r / min, more preferably 620-680 r / min, more preferably 650-660 r / min, and the doffer speed is preferably 15-20 r / min, more preferably 16-19 r / min, more preferably 17-18 r / min.

[0035] In the present invention, the drawing of step 2) preferably includes the first drawing and the last drawing, the weight of the raw sliver of the first drawing is preferably 16-20g / 5m, more preferably 17-19g / 5m, more preferably 18g / 5m, the weight of the raw sliver of the last drawing is preferably 14-17g / 5m, more preferably 15-16g / 5m, the drafting multiples of the first drawing and the last drawing are independently preferably 8-10, more preferably 9, the sliver output speed of the first drawing is preferably 220-260m / min, more preferably 230-250m / min, more preferably 240m / min, the sliver output speed of the last drawing is preferably 150-170m / min, more preferably 155-165m / min, more preferably 160m / min.

[0036] In the coarse yarn process of step 2) of the present invention, the roller gauge is preferably 40mm×40mm×45mm, the jaw gauge is preferably 10-14mm, more preferably 11-13mm, more preferably 12mm, the twist of the yarn is preferably 80-90, more preferably 82-88, more preferably 84-85, and the vehicle speed is preferably 160-180m / min, more preferably 165-175m / min, more preferably 170m / min.

[0037] In the spinning process of step 2) of the present invention, the roller gauge is preferably 18mm×25mm, the draft multiple is preferably 30-35, more preferably 31-34, more preferably 32-33, and the jaw gauge is preferably 5-8mm, more preferably 6-7mm.

[0038] In the winding process of step 2) of the present invention, the winding speed is preferably 1050 to 1200 m / min, and more preferably 1100 to 1150 m / min.

[0039] The present invention also provides antibacterial, environmentally friendly and breathable blended yarn prepared by the preparation method.

[0040] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0041] Example 1

[0042] Tencel fiber, flax fiber and modal fiber with a mass ratio of 28:23:22 were mixed, and an oil agent was sprayed on the mixed fiber. The oil agent consisted of castor oil and sodium chloride solution with a mass ratio of 1:6, the mass concentration of the sodium chloride solution was 0.4 g / L, the spraying frequency was 13 mL / min, and the spraying time was 10 min to obtain pretreated fiber.

[0043] The pretreated fibers are sequentially subjected to opening and cleaning, carding, drawing, roving, spinning, and winding to obtain antibacterial, environmentally friendly, and breathable blended yarns; in the opening and cleaning process, the beater speed is 500r / min, and the lap roller speed is 8r / min;

[0044] In the carding process, the basis weight of the carded sliver is 17g / 5m, the distance between the cylinder roller and the licker-in roller is 0.18mm, the distance between the cylinder roller and the cover plate at 5 points from the inlet to the outlet are 0.24mm, 0.20mm, 0.23mm, 0.20mm, 0.23mm, the distance between the cylinder roller and the doffer roller is 0.13mm, the speed of the cylinder roller is 220r / min, the speed of the licker-in roller is 650r / min, and the speed of the doffer is 18r / min;

[0045] The drawing process includes the first drawing process and the last drawing process. The weight of the first drawing process is 18g / 5m, and the weight of the last drawing process is 16g / 5m. The drafting multiples of the first drawing process and the last drawing process are both 9. The delivery speed of the first drawing process is 240m / min, and the delivery speed of the last drawing process is 160m / min.

[0046] In the roving process, the roller gauge is 40mm×40mm×45mm, the jaw gauge is 12mm, the twist of the yarn is 85, and the machine speed is 170m / min; in the spun yarn process, the roller gauge is 18mm×25mm, the draft multiple is 33, and the jaw gauge is 6mm; in the winding process, the winding speed is 1150m / min.

[0047] Example 2

[0048] The mass ratio of the tencel fiber, the flax fiber and the modal fiber in Example 1 was changed from 28:23:22 to 26:21:20, and the other conditions were the same as in Example 1.

[0049] Example 3

[0050] The mass ratio of the tencel fiber, the flax fiber and the modal fiber in Example 1 was changed from 28:23:22 to 30:24:25, and the other conditions were the same as in Example 1.

[0051] Comparative Example 1

[0052] The flax fiber in Example 1 was omitted, the modal fiber was replaced by cotton fiber, the oil spraying step was omitted, and the other conditions were the same as in Example 1.

[0053] Comparative Example 2

[0054] The Tencel fiber of Example 1 was omitted, the mass ratio of flax fiber to modal fiber was changed from 23:22 to 30:30, the speed of the cylinder roller was 300 r / min, the speed of the licker-in roller was 800 r / min, the doffer speed was 25 r / min, and the other conditions were the same as in Example 1.

[0055] The CV of the blended yarns prepared in Examples 1 to 3 are 10.5%, 10.7% and 10.6% respectively.

[0056] The mechanical properties and antibacterial properties of the blended yarns of Examples 1 to 3 and Comparative Examples 1 to 2 were tested.

[0057] The wet strength and elongation of the blended yarn were tested according to GB / T 3923.1-2013 "Tensile properties of textile fabrics Part I: Determination of breaking strength and breaking elongation (strip method)". The test shows that the breaking strength of the blended yarn of Example 1 is 24.5 cN / tex, and the breaking elongation is 7.2%; the breaking strength of the blended yarn of Example 2 is 24.1 cN / tex, and the breaking elongation is 7.1%; the breaking strength of the blended yarn of Example 3 is 23.7 cN / tex, and the breaking elongation is 6.9%; the breaking strength of the blended yarn of Comparative Example 1 is 18.7 cN / tex, and the breaking elongation is 5.9%; the breaking strength of the blended yarn of Comparative Example 2 is 19.5 cN / tex, and the breaking elongation is 6.1%.

[0058] The blended yarns of Examples 1 to 3 and Comparative Examples 1 to 2 were knitted using single-sided plain weave with a needle size of 12G and the same weaving process to obtain fabrics. The antibacterial rate of the fabrics was tested using a modified oscillation method, and the antibacterial rate was tested again after washing 30 times.

[0059] Table 1 Antibacterial properties of blended yarns of Examples and Comparative Examples

[0060]

[0061]

[0062] It can be seen from the examples and comparative examples that the fiber types, the ratio of different fibers and the process parameters have a significant impact on the quality, antibacterial properties and mechanical properties of the blended yarn. The present invention reasonably selects a variety of fibers for blending and controls the ratio of each fiber to obtain an environmentally friendly, breathable, antibacterial and mechanically good blended yarn. The fabric woven from the blended yarn is environmentally friendly, breathable, and has excellent antibacterial and mechanical properties.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An antibacterial, environmentally friendly and breathable blended yarn, characterized in that: The raw materials for preparing the blended yarn include tencel fiber, flax fiber and modal fiber; the mass ratio of the tencel fiber, flax fiber and modal fiber is 25-30:20-25:20-25.

2. The method for preparing the antibacterial, environmentally friendly and breathable blended yarn according to claim 1, characterized in that: The following steps are included: 1) mixing tencel fiber, flax fiber and modal fiber and spraying oil agent on the mixture to obtain pretreated fiber; 2) The pretreated fibers are sequentially subjected to cotton opening, carding, drawing, roving, spinning, and winding to obtain antibacterial, environmentally friendly, and breathable blended yarns.

3. The preparation method according to claim 2, characterized in that: Step 1) The oil agent comprises oil and sodium chloride solution, the mass ratio of oil to sodium chloride solution is 1:4-7, the mass concentration of sodium chloride solution is 0.3-0.5 g / L; the spraying frequency is 10-15 mL / min.

4. The preparation method according to claim 2 or 3, characterized in that: In the carding process of step 2), the basis weight of the carded sliver is 15-20 g / 5 m; The gauge between the cylinder roller and the licker-in roller is 0.16-0.20mm, the gauge between the cylinder roller and the cover plate is 0.20-0.25mm, and the gauge between the cylinder roller and the doffer roller is 0.1-0.15mm. The speed of the cylinder roller is 200-230r / min, the speed of the licker-in roller is 600-700r / min, and the speed of the doffer is 15-20r / min.

5. The preparation method according to claim 4, characterized in that: The drawing of step 2) includes head drawing and end drawing, the raw sliver weight of the head drawing is 16-20g / 5m, the raw sliver weight of the end drawing is 14-17g / 5m, the drafting multiples of the head drawing and the end drawing are 8-10, the sliver delivery speed of the head drawing is 220-260m / min, and the sliver delivery speed of the end drawing is 150-170m / min.

6. The preparation method according to claim 5, characterized in that: In the roving process of step 2), the roller gauge is 40 mm×40 mm×45 mm, the jaw gauge is 10-14 mm, the twist of the yarn is 80-90, and the machine speed is 160-180 m / min.

7. The preparation method according to claim 6, characterized in that: In the spinning process of step 2), the roller gauge is 18 mm×25 mm, the draft multiple is 30 to 35, and the jaw gauge is 5 to 8 mm.

8. The antibacterial, environmentally friendly and breathable blended yarn prepared by the preparation method according to any one of claims 1 to 7.

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