Preparation process of antibacterial blended yarn

Abstract

The invention relates to the technical field of textile, in particular to a preparation process of antibacterial blended yarn, which comprises the following steps: selecting blending raw materials, pretreating the blending raw materials, and uniformly mixing the pretreated blending raw materials to obtain a blended fiber mixture; the preparation process of the antibacterial blended yarn has the beneficial effects that the bamboo pulp fiber, the natural jute fiber, the modified polyester fiber, the spandex fiber and other raw materials are carefully selected, and a reasonable ratio is determined, so that the prepared yarn not only has excellent antibacterial performance, but also keeps good hygroscopicity, air permeability, elasticity and wear resistance.

Description

Technical Field

[0001] The invention relates to the field of textiles, and in particular to a preparation process of an antibacterial blended yarn. Background Art

[0002] With the continuous advancement of textile technology and the increasing demand of consumers for textile functionality, the preparation process of antibacterial blended yarn has gradually become a research hotspot in the textile industry. Traditional yarn preparation processes often focus on the strength and wear resistance of yarns, but pay less attention to the antibacterial properties of yarns. However, textiles with antibacterial functions have broad application prospects in many fields such as medical care, sports, and home furnishing.

[0003] When preparing antibacterial blended yarn, the choice of raw materials is crucial. Bamboo pulp fiber is favored for its good moisture absorption and breathability, while natural hemp fiber (such as flax fiber or jute fiber) has excellent antibacterial properties and durability. Modified polyester fiber can improve the anti-ultraviolet and wear resistance of the yarn through special-shaped cross-section design and anti-ultraviolet treatment. The addition of spandex fiber gives the yarn good elasticity.

[0004] However, simply blending these raw materials cannot meet the requirements for antibacterial properties. Therefore, it is necessary to evenly load the composite antibacterial agent onto the blended fiber during the spinning process. Composite antibacterial agents usually contain ingredients such as nano silver ions, natural plant extracts and chitosan, which can work synergistically to effectively kill or inhibit the growth of bacteria.

[0005] In addition, the yarn preparation process also includes multiple steps such as pretreatment, spinning and post-treatment. Pretreatment can improve the surface properties of the fiber and enhance the bonding force between fibers; the spinning process needs to control parameters such as spinning speed, tension and temperature to ensure the quality and performance of the yarn; post-treatment includes dyeing, shaping, anti-wrinkle finishing and other steps to further improve the appearance and performance of the yarn.

[0006] Although the existing antibacterial blended yarn preparation process has made some progress, there are still some shortcomings. For example, the loading efficiency and uniformity of the antibacterial agent need to be improved, and the antibacterial properties of the yarn need to be further improved; at the same time, the parameter control in the preparation process also needs to be more precise and intelligent to meet the requirements of yarn performance in different fields. Summary of the invention

[0007] The purpose of the present invention is to provide a preparation process of antibacterial blended yarn to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a preparation process of antibacterial blended yarn, the preparation process of the antibacterial blended yarn comprising the following steps:

[0009] Select blended raw materials: bamboo pulp fiber: 30% by weight, natural hemp fiber: 20% by weight, specifically flax fiber or jute fiber, modified polyester fiber: 10% by weight, with special-shaped cross-section design and anti-ultraviolet treatment, and spandex fiber: 5% by weight;

[0010] The blended raw materials were pretreated: mercerization was performed in a weak alkaline aqueous solution with a pH value of 8.5 for 60 minutes, followed by plasma surface modification technology with a processing power of 80W and a processing time of 45 seconds. The gas atmosphere was argon, and nano-silica particles were introduced at a dosage of 1.0% of the fiber weight.

[0011] The pretreated blended raw materials are mixed evenly to obtain a blended fiber mixture.

[0012] Preferably, the method further includes feeding the blended fiber mixture into a compact spinning device for spinning, wherein the spinning speed is 4000 rpm, the spinning tension is 7 gf / denier, the spinning temperature is 22°C, the relative humidity is 50%, and air-jet spinning technology is introduced.

[0013] Preferably, during the spinning process, the composite antibacterial agent is evenly loaded onto the blended fiber, the concentration of nano silver ions in the composite antibacterial agent is 1.0%, the concentration of natural plant extracts is 2.0%, and the concentration of chitosan is 1.0%. The process is carried out by using ultrasonic spray and microwave treatment synergistic processing technology, the ultrasonic spray power is 300 W, the spray time is 7 minutes, the microwave power is 800 W, and the processing time is 2 minutes.

[0014] Preferably, the method further includes post-processing the yarn: low-temperature dyeing at 90°C, setting treatment at 135°C, anti-wrinkle finishing using an environmentally friendly cross-linking agent, and then ultraviolet curing technology, the treatment time is 10 minutes, the light source is an LED ultraviolet lamp, and the wavelength is 365nm.

[0015] Preferably, the method further includes the step of performing online color mixing treatment on the blended raw materials before spinning, which step is achieved by a special color mixing device, the color mixing device includes a color mixing chamber and a color homogenizing chamber, the color mixing chamber is provided with an agitator with a rotation speed of 120 rpm, the color homogenizing chamber is provided with a color homogenizer, and the color homogenizing time is 15 minutes.

[0016] Preferably, an intelligent monitoring system is introduced into the spinning process, which can monitor the quality parameters of the yarn in real time, including breaking strength: monitoring range is 10-50cN / tex, elongation: monitoring range is 5%-20% and uniformity: coefficient of variation ≤3%, and automatically adjust the spinning parameters such as spinning speed, tension and temperature according to the monitoring results.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The preparation process of the antibacterial blended yarn proposed in the present invention carefully selects raw materials such as bamboo pulp fiber, natural hemp fiber, modified polyester fiber and spandex fiber, and determines a reasonable ratio, so that the prepared yarn has excellent antibacterial properties and maintains good moisture absorption, air permeability, elasticity and wear resistance.

[0019] Ultrasonic spray and microwave treatment synergistic treatment technology is used to evenly load the composite antimicrobial agent onto the blended fiber. This technology not only improves the loading efficiency of the antimicrobial agent, but also ensures the uniform distribution of the antimicrobial agent in the fiber, thereby improving the antimicrobial properties of the yarn.

[0020] During the spinning and post-processing process, the quality and stability of the yarn are ensured by precisely controlling the spinning speed, tension, temperature, dyeing, shaping and other parameters. At the same time, the introduction of an intelligent monitoring system monitors the quality parameters of the yarn in real time and automatically adjusts the spinning parameters according to the monitoring results, further improving the accuracy and intelligence of the preparation process.

[0021] During the preparation process, environmentally friendly cross-linking agents and LED ultraviolet lamps are used for anti-wrinkle finishing and ultraviolet curing treatment, which reduces the emission of harmful substances, reduces energy consumption, and meets the requirements of sustainable development.

[0022] The prepared antibacterial blended yarn has excellent antibacterial properties, hygroscopicity, air permeability, elasticity and wear resistance. It is suitable for multiple fields such as medical treatment, sports, and home use, and has broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] For example, see Figure 1 The present invention provides a technical solution: a preparation process of an antibacterial blended yarn, the preparation process of the antibacterial blended yarn comprising the following steps:

[0026] Select blended raw materials: bamboo pulp fiber: 30% by weight, natural hemp fiber: 20% by weight, specifically flax fiber or jute fiber, modified polyester fiber: 10% by weight, with special-shaped cross-section design and anti-ultraviolet treatment, and spandex fiber: 5% by weight;

[0027] The blended raw materials were pretreated: mercerization was performed in a weak alkaline aqueous solution with a pH value of 8.5 for 60 minutes, followed by plasma surface modification technology with a processing power of 80W and a processing time of 45 seconds. The gas atmosphere was argon, and nano-silica particles were introduced at a dosage of 1.0% of the fiber weight.

[0028] The pretreated blended raw materials are mixed evenly to obtain a blended fiber mixture;

[0029] The method also includes the steps of feeding the blended fiber mixture into a compact spinning device for spinning, wherein the spinning speed is 4000 rpm, the spinning tension is 7 gf / denier, the spinning temperature is 22°C, the relative humidity is 50%, and the air-jet spinning technology is introduced; during the spinning process, the composite antibacterial agent is evenly loaded onto the blended fiber, wherein the concentration of nano silver ions in the composite antibacterial agent is 1.0%, the concentration of natural plant extracts is 2.0%, and the concentration of chitosan is 1.0%, and the process is carried out by using an ultrasonic spray and microwave treatment synergistic treatment technology, wherein the ultrasonic spray power is 300W, the spray time is 7 minutes, the microwave power is 800W, and the treatment time is 2 minutes;

[0030] It also includes the steps of post-treatment of the yarn: low temperature dyeing temperature is 90°C, setting treatment temperature is 135°C, anti-wrinkle finishing uses environmentally friendly cross-linking agent, and then uses ultraviolet curing technology, the treatment time is 10 minutes, the light source is LED ultraviolet lamp, the wavelength is 365nm;

[0031] The method also includes the step of performing online color mixing on the blended raw materials before spinning, which is achieved by a special color mixing device, the color mixing device including a color mixing chamber and a color homogenizing chamber, the color mixing chamber is provided with a stirrer with a rotation speed of 120 revolutions per minute, and the color homogenizing chamber is provided with a color homogenizer with a color homogenizing time of 15 minutes;

[0032] It also includes the introduction of an intelligent monitoring system in the spinning process, which can monitor the quality parameters of the yarn in real time, including breaking strength: the monitoring range is 10-50cN / tex, elongation: the monitoring range is 5%-20% and uniformity: coefficient of variation ≤3%, and automatically adjust the spinning parameters such as spinning speed, tension and temperature according to the monitoring results.

[0033] Example 2, based on Example 1, proposes a preparation process for antibacterial blended yarn

[0034] Raw material selection and ratio: bamboo pulp fiber: 30% by weight; natural hemp fiber (flax fiber): 20% by weight; modified polyester fiber (with special-shaped cross-section design and anti-ultraviolet treatment): 10% by weight; spandex fiber: 5% by weight.

[0035] Pretreatment: The above blended raw materials were placed in a weak alkaline aqueous solution (pH 8.5) for mercerization treatment for 60 minutes. Plasma surface modification technology was used with a treatment power of 80W, a treatment time of 45 seconds, and an argon atmosphere. During the modification process, nano-silicon dioxide particles were introduced at the same time, with an addition amount of 1.0% of the fiber weight.

[0036] Blending: The pretreated blended raw materials are mixed evenly to obtain a blended fiber mixture. Spinning: The blended fiber mixture is fed into a compact spinning device for spinning at a spinning speed of 4000 rpm, a spinning tension of 7 gf / denier, a spinning temperature of 22°C, and a relative humidity of 50%. Air-spinning technology is introduced to improve the strength and uniformity of the yarn.

[0037] Antimicrobial agent loading: During the spinning process, the composite antimicrobial agent is evenly loaded onto the blended fiber. The composite antimicrobial agent contains nano silver ions (concentration of 1.0%), natural plant extracts (concentration of 2.0%) and chitosan (concentration of 1.0%). Ultrasonic spray and microwave treatment synergistic processing technology is used for loading, with an ultrasonic spray power of 300W and a spray time of 7 minutes; the microwave power is 800W and the processing time is 2 minutes.

[0038] Post-treatment: The yarn is dyed at low temperature at 90°C. The yarn is set at 135°C. An environmentally friendly cross-linking agent is used for anti-wrinkle finishing. An LED ultraviolet lamp (wavelength 365nm) is used for ultraviolet curing for 10 minutes.

[0039] Embodiment 3, based on embodiment 2, proposes: raw material selection and proportion: bamboo pulp fiber: 30% by weight; natural hemp fiber (flax fiber): 20% by weight; modified polyester fiber (with special-shaped cross-section design and anti-ultraviolet treatment): 10% by weight; spandex fiber: 5% by weight.

[0040] Pretreatment: The above blended raw materials were placed in a weak alkaline aqueous solution (pH 8.5) for mercerization treatment for 60 minutes. Plasma surface modification technology was used with a treatment power of 80W, a treatment time of 45 seconds, and an argon atmosphere. During the modification process, nano-silicon dioxide particles were introduced at the same time, with an addition amount of 1.0% of the fiber weight.

[0041] Blending: The pretreated blended raw materials are mixed evenly to obtain a blended fiber mixture.

[0042] Online color mixing: Before spinning, the blended raw materials are mixed online. A special color mixing device is used, which includes a color mixing chamber and a color homogenizing chamber. The color mixing chamber is equipped with an agitator with a rotation speed of 120 rpm to ensure uniform color mixing. The color homogenizing chamber is equipped with a color homogenizer with a homogenizing time of 15 minutes to further ensure color uniformity.

[0043] Spinning: The blended fiber mixture is fed into a compact spinning machine for spinning at a spinning speed of 4000 rpm, a spinning tension of 7 gf / denier, a spinning temperature of 22°C, and a relative humidity of 50%. Air-spinning technology is introduced to improve the strength and uniformity of the yarn.

[0044] Antimicrobial agent loading: During the spinning process, the composite antimicrobial agent is evenly loaded onto the blended fiber. The composite antimicrobial agent contains nano silver ions (concentration of 1.0%), natural plant extracts (concentration of 2.0%) and chitosan (concentration of 1.0%). Ultrasonic spray and microwave treatment synergistic processing technology is used for loading, with an ultrasonic spray power of 300W and a spray time of 7 minutes; the microwave power is 800W and the processing time is 2 minutes.

[0045] Post-treatment: The yarn is dyed at low temperature at 90°C. The yarn is set at 135°C. An environmentally friendly cross-linking agent is used for anti-wrinkle finishing. An LED ultraviolet lamp (wavelength 365nm) is used for ultraviolet curing for 10 minutes.

[0046] Embodiment 4, based on embodiment 2, proposes: raw material selection and proportion: bamboo pulp fiber: 30% by weight; natural hemp fiber (flax fiber): 20% by weight; modified polyester fiber (with special-shaped cross-section design and anti-ultraviolet treatment): 10% by weight; spandex fiber: 5% by weight.

[0047] Pretreatment: The above blended raw materials were placed in a weak alkaline aqueous solution (pH 8.5) for mercerization treatment for 60 minutes. Plasma surface modification technology was used with a treatment power of 80W, a treatment time of 45 seconds, and an argon atmosphere. During the modification process, nano-silicon dioxide particles were introduced at the same time, with an addition amount of 1.0% of the fiber weight.

[0048] Spinning: The blended fiber mixture was fed into a compact spinning device for spinning at a spinning speed of 4000 rpm, a spinning tension of 7 gf / denier, a spinning temperature of 22°C, and a relative humidity of 50%.

[0049] Introduced air-spinning technology to improve yarn strength and uniformity.

[0050] An intelligent monitoring system is introduced during the spinning process, which can monitor the quality parameters of the yarn in real time, including breaking strength (monitoring range is 10-50cN / tex), elongation (monitoring range is 5%-20%) and uniformity (coefficient of variation ≤3%).

[0051] According to the monitoring results, spinning parameters such as spinning speed, tension and temperature are automatically adjusted to ensure stable yarn quality.

[0052] Antimicrobial agent loading: During the spinning process, the composite antimicrobial agent is evenly loaded onto the blended fiber. The composite antimicrobial agent contains nano silver ions (concentration of 1.0%), natural plant extracts (concentration of 2.0%) and chitosan (concentration of 1.0%). Ultrasonic spray and microwave treatment synergistic processing technology is used for loading, with an ultrasonic spray power of 300W and a spray time of 7 minutes; the microwave power is 800W and the processing time is 2 minutes.

[0053] Post-treatment: The yarn is dyed at low temperature at 90°C. The yarn is set at 135°C. An environmentally friendly cross-linking agent is used for anti-wrinkle finishing. An LED ultraviolet lamp (wavelength 365nm) is used for ultraviolet curing for 10 minutes.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for preparing antibacterial blended yarn, characterized in that: The preparation process of the antibacterial blended yarn comprises the following steps: Select blended raw materials: bamboo pulp fiber: 30% by weight, natural hemp fiber: 20% by weight, specifically flax fiber or jute fiber, modified polyester fiber: 10% by weight, with special-shaped cross-section design and anti-ultraviolet treatment, and spandex fiber: 5% by weight; The blended raw materials were pretreated: mercerization was performed in a weak alkaline aqueous solution with a pH value of 8.5 for 60 minutes, followed by plasma surface modification technology with a processing power of 80W and a processing time of 45 seconds. The gas atmosphere was argon, and nano-silica particles were introduced at a dosage of 1.0% of the fiber weight. The pretreated blended raw materials are mixed evenly to obtain a blended fiber mixture.

2. The process for preparing an antibacterial blended yarn according to claim 1, characterized in that: The method also includes the steps of feeding the blended fiber mixture into a compact spinning device for spinning, wherein the spinning speed is 4000 rpm, the spinning tension is 7 gf / denier, the spinning temperature is 22°C, the relative humidity is 50%, and air-jet spinning technology is introduced.

3. The process for preparing an antibacterial blended yarn according to claim 2, characterized in that: During the spinning process, the composite antibacterial agent is evenly loaded onto the blended fiber. The concentration of nano silver ions in the composite antibacterial agent is 1.0%, the concentration of natural plant extracts is 2.0%, and the concentration of chitosan is 1.0%. It is carried out by the synergistic treatment technology of ultrasonic spray and microwave treatment. The ultrasonic spray power is 300 W, the spray time is 7 minutes, the microwave power is 800 W, and the treatment time is 2 minutes.

4. The process for preparing an antibacterial blended yarn according to claim 3, characterized in that: It also includes the steps of post-processing the yarn: low-temperature dyeing temperature is 90°C, setting treatment temperature is 135°C, anti-wrinkle finishing uses an environmentally friendly cross-linking agent, and then ultraviolet curing technology is used. The treatment time is 10 minutes. The light source is an LED ultraviolet lamp with a wavelength of 365nm.

5. The process for preparing an antibacterial blended yarn according to claim 4, characterized in that: The method also includes the step of performing online color mixing on the blended raw materials before spinning, which is achieved by a special color mixing device. The color mixing device includes a color mixing chamber and a color homogenizing chamber. The color mixing chamber is provided with an agitator with a rotation speed of 120 revolutions per minute, and the color homogenizing chamber is provided with a color homogenizer with a color homogenizing time of 15 minutes.

6. The process for preparing an antibacterial blended yarn according to claim 5, characterized in that: It also includes the introduction of an intelligent monitoring system during the spinning process, which monitors the quality parameters of the yarn in real time, including breaking strength: the monitoring range is 10-50cN / tex, elongation: the monitoring range is 5%-20% and uniformity: coefficient of variation ≤3%, and automatically adjusts the spinning parameters such as spinning speed, tension and temperature according to the monitoring results.

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