Antibacterial and antistatic functional fabric for cashmere sweater and production process

Abstract

The invention belongs to the technical field of cashmere sweater fabrics, and particularly relates to an antibacterial and antistatic functional fabric for a cashmere sweater and a production process, the antibacterial and antistatic functional fabric for the cashmere sweater comprises the following raw materials: bamboo fibers, chitosan fibers, cashmere fibers, and raw material single-yarn high-twist plying reverse low-twist yarns based on the bamboo fibers, the chitosan fibers and the cashmere fibers; the surface of the raw material of the antibacterial and antistatic functional fabric for the cashmere sweater is soaked with an antibacterial agent and an antistatic agent. The antibacterial and antistatic functional fabric for the high-end cashmere sweater meets the diversified requirements of consumers for clothes. Innovation of fabric functionalization in the textile industry is promoted, research, development and application of novel antibacterial and antistatic fabric are promoted, the project is that cashmere sweaters have antibacterial and antistatic effects firstly in the industry, skin inflammation and infection risks caused by wearing of the cashmere sweaters are reduced, the scientific and technological level and competitiveness of the whole textile industry are improved, and the antibacterial and antistatic fabric is worthy of popularization and application. And industrial upgrading and transformation are promoted.

Description

Technical Field

[0001] The invention relates to the technical field of cashmere sweater fabrics, in particular to an antibacterial and antistatic functional fabric for cashmere sweaters and a production process. Background Art

[0002] Cashmere is difficult and expensive to spin purely, but it offers excellent properties such as fineness, lightness, softness, and warmth. It is generally used to make cashmere sweaters, while woolen spinning is used for high-end clothing, such as coats and blankets. It can also be used for fine worsted clothing and carpets. Cashmere products are considered high-end consumer goods and have a large market in countries and regions such as Europe, the United States, and Japan. With the consumption upgrades brought about by continued urbanization, rising income levels, and the rapid spread of information, Chinese consumer behavior is becoming increasingly mature, rational, and diversified. Their clothing choices are no longer limited to satisfying basic functional needs, but are increasingly seeking clothing with a focus on design, material, cut, and the lifestyle it represents. As cashmere consumption increases in China, its acceptance is expected to further increase.

[0003] Fashionable and luxurious cashmere garments embody the epitome of comfort, style and sophistication, making them a symbol of prestige and exclusivity in the fashion world. These products are highly sought after by discerning consumers who appreciate cashmere garments for their unparalleled quality, elegance and timeless appeal.

[0004] However, existing cashmere sweaters have certain disadvantages when used. During use, antibacterial fabrics are not added to the cashmere sweaters during processing, resulting in low antibacterial properties of the cashmere sweaters. Antistatic fabrics are not added to the cashmere sweaters during processing, resulting in low antistatic properties of the cashmere sweaters, which has brought certain adverse effects to people's use process. Summary of the Invention

[0005] The object of the present invention is to provide an antibacterial and antistatic functional fabric for cashmere sweaters and a production process to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an antibacterial and antistatic functional fabric for cashmere sweaters, wherein the raw materials of the antibacterial and antistatic functional fabric for cashmere sweaters include: Bamboo fiber, chitosan fiber, cashmere fiber; Among them, the raw materials of bamboo fiber, chitosan fiber and cashmere fiber are single yarn with high twist and reverse low twist; The surface of the raw material of the antibacterial and antistatic functional fabric for the cashmere sweater is treated by soaking in antibacterial agents and antistatic agents.

[0007] Preferably, the single yarn density of the bamboo fiber and chitosan fiber is 20 tex, the twist is 950 twists / m, S twist, and is paralleled with 2.22 tex single-strand cashmere fiber to form a double yarn with a twist of 400 twists / m, Z twist, and the yarn is steamed at 92°C for 10 minutes to set the yarn.

[0008] Preferably, the cashmere sweater uses antibacterial and antistatic functional fabrics with large color blocks to add a woven variable houndstooth pattern to shorten the floating length of the jacquard loops, thereby stabilizing the fabric structure and making the fabric surface smooth.

[0009] Preferably, the raw material for antibacterial is an antibacterial agent composed of tetrapod-shaped zinc oxide whiskers and polyhexamethylene biguanide, and the raw material for antistatic is an antistatic agent of quaternary ammonium salt type.

[0010] A production process for antibacterial and antistatic functional fabrics for cashmere sweaters, the specific steps of the production process for antibacterial and antistatic functional fabrics for cashmere sweaters are as follows: S1: Wool washing: The collected wool is sorted to remove damaged wool that cannot be used. The sorted wool is then placed in hot water and ultrasonically soaked for 50-60 minutes to remove obvious impurities in the wool for later processing. The wool is then drained to obtain clean wool. S2: Primary enzymatic hydrolysis: The cleaned wool is placed in the primary enzymatic hydrolysis solution, stirred evenly, and ultrasonically cleaned at 28-30kHz for 90-120 minutes. The primary enzymatic hydrolysis solution contains lipase, which is used to ultrasonically treat the wool to accelerate the separation and decomposition of lanolin from the wool surface by lipase, reducing the residual lanolin to 0.6-0.8%, thus avoiding the need for subsequent wool mixing and oiling. This not only avoids the use of chemical reagents in the wool washing process, but also eliminates the need for subsequent wool mixing and oiling procedures, saving a lot of production costs. The wool is then centrifuged to remove water, thereby obtaining the primary enzymatic hydrolyzed wool. S3: Secondary enzymatic hydrolysis: Place the first enzymatic hydrolysis wool in the secondary enzymatic hydrolysis solution, mix well, keep warm and soak for 30-40 minutes, then ultrasonically clean for 90-120 minutes at 29 and 30kHz. The secondary enzymatic hydrolysis solution contains cellulase, lipase and pectinase, which can decompose the residual plant impurities in the wool. The conditions are mild, avoiding the high acid and high temperature harsh conditions used in the traditional carbonization process. S4: Rinse: Place the enzymatically hydrolyzed wool in clean water and rinse it repeatedly for 2 to 3 times. Simply rinsing the wool can remove plant decomposition impurities in the wool, because plant impurities can be decomposed into small and light impurities after being treated with multiple enzymes and can be easily rinsed away. Centrifuge to remove water to obtain rinsed wool; S5: Drying: The bleached wool is placed in a dryer and dried at 60-70°C until the moisture content is 6-10%. The lower the temperature during drying, the more likely it is to maintain the structure of the wool and increase its breaking strength. After drying, subsequent gilling and combing are performed to prepare cashmere fibers, thereby obtaining dried wool. S6: Post-processing: needle-feeding and combing the dried wool to obtain processed cashmere fibers; S7: Bamboo fiber, chitosan fiber, cashmere fiber single yarn high twist ply reverse low twist yarn form, so that the yarn achieves the effect of loose outside and tight inside; S8: Adding a houndstooth pattern similar to woven patterns to large color blocks in knitted fabrics shortens the jacquard loop float length, stabilizes the fabric structure, and creates a smooth surface. S9: Apply formulated antimicrobial agents and antistatic agents to achieve excellent antimicrobial and antistatic properties.

[0011] Compared with the prior art, the present invention has the following beneficial effects: As consumers' requirements for clothing quality and functionality continue to increase, high-end cashmere sweaters with antibacterial and antistatic functional fabrics meet consumers' diverse needs for clothing.

[0012] It has promoted innovation in the functionalization of fabrics in the textile industry and promoted the research and development and application of new antibacterial and antistatic fabrics. The project is the first in the industry to realize the antibacterial and antistatic effects of cashmere sweaters, reducing the risk of skin inflammation and infection caused by wearing cashmere sweaters, helping to improve the technological level and competitiveness of the entire textile industry and promote industrial upgrading and transformation.

[0013] At the same time, the research and development and application of antibacterial and antistatic functional fabrics for high-end cashmere sweaters have significantly improved the added value of the products. As consumers' demand for healthy, comfortable and functional clothing continues to increase, its market size will continue to rise, which will help companies expand their market share and improve sales performance and profitability. DETAILED DESCRIPTION

[0014] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0015] In the description of the present invention, it is only for the convenience of describing the present invention and simplifying the description, and it does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore it cannot be understood as limiting the present invention.

[0016] Example: The present invention provides a technical solution: The improvement plan includes three aspects: antibacterial and antistatic functional fabrics, wool anti-fracture biological treatment research and development and manufacturing process, etc., to provide consumers with clothing that is both warm and has special functions. The research and development content is as follows Research and development of antibacterial and antistatic functional fabrics for high-end cashmere sweaters: The main research and development content of the antibacterial and antistatic functional fabrics for high-end cashmere sweaters used in the project products is to pre-treat bamboo fiber and chitosan fiber, and carry out structural modification of cashmere fiber on the basis of the formula. It involves the difficulties in spinning, weaving, and finishing. Therefore, the main research content of the project is to develop these three difficulties, which are as follows: 1) Research on solving the difficulties in spinning technology Since bamboo fiber, chitosan fiber and cashmere fiber are all smooth in surface and relatively poor in cohesion, they are suitable for wet spinning after pretreatment and structural modification. Therefore, the project studies the application of spinning The yarn is formed by plying single yarns with high twist and reverse low twist, achieving a loose exterior and tight interior. The final linear density of the bamboo and chitosan fibers was 20 tex, with a twist of 950 twists / m and S twist. This yarn was then paralleled with 2.22 tex single-ply cashmere fiber to create a two-ply yarn with a twist of 400 twists / m and Z twist. The yarn was then steamed at 92°C for 10 minutes to stabilize the yarn and eliminate internal stress.

[0017] 2) Research on solving difficulties in weaving technology The project design draws inspiration from the check-within-check pattern of woven houndstooth fabrics. A similar woven houndstooth pattern is added to the large color blocks of the knitted fabric, thereby shortening the floating length of the jacquard loops, making the fabric structure stable and the surface smooth. This not only solves the problem of checkerboard skewness at the source, but also makes the fabric surface more beautiful.

[0018] 3) Research on the Difficulties of Balancing Antibacterial and Antistatic Properties Fabrics are typically treated with antimicrobial finishing agents to impart an antimicrobial effect. These finishing agents include soluble organic antimicrobials such as biguanides, isothiazolinones, organosilicon ammonium salts, and phenols. However, long-term use can easily lead to the development of drug-resistant bacteria, significantly reducing the antimicrobial effect. Furthermore, due to the nature of polyester fabrics, achieving antistatic properties is challenging. The use of organic antimicrobials can compromise both antistatic and antistatic properties. Therefore, a balanced approach to antimicrobial and antistatic finishing is crucial.

[0019] Through experiments, the project determined that antibacterial pretreatment, antibacterial treatment, and structural modification treatment should be carried out before antistatic treatment. The antibacterial agent composed of a combination of formulated tetrapod-shaped zinc oxide whiskers and polyhexamethylene biguanide, and the antistatic agent of quaternary ammonium salts were used to prevent the antibacterial agent and the antistatic agent from producing adverse chemical reactions, thereby achieving excellent antibacterial and antistatic properties.

[0020] Research and development of biological treatment for wool anti-breakage: Cashmere needs to be processed before it can achieve the desired effect. The existing processing technology requires the use of chemical reagents, which are harmful to the environment and damage the cashmere structure. Therefore, the project studies this aspect to solve the problem and enhance the cashmere's anti-fracture performance.

[0021] 1) Wool washing: The collected wool is sorted to remove damaged wool that cannot be used. The sorted wool is then placed in hot water and ultrasonically soaked for 50-60 minutes to remove obvious impurities in the wool for later processing. The wool is then drained to clean the wool. 2) Primary enzymatic hydrolysis: The cleaned wool is placed in the primary enzymatic hydrolysis solution, stirred evenly, and ultrasonically cleaned at 28-30kHz for 90-120 minutes. The primary enzymatic hydrolysis solution contains a certain amount of lipase, which is used to ultrasonically treat the wool to accelerate the separation and decomposition of lanolin from the wool surface by lipase, reducing the residual lanolin to 0.6-0.8%, thus avoiding the need for subsequent wool mixing and oiling. This not only avoids the use of chemical reagents in the wool washing process, but also saves the subsequent wool mixing and oiling procedures, saving a lot of production costs. After dehydration by centrifugation, the wool is obtained as the primary enzymatic hydrolyzed wool. 3) Secondary enzymatic hydrolysis: placing the primary enzymatic hydrolysis wool in the secondary enzymatic hydrolysis solution, mixing evenly, keeping warm and soaking for 30-40 minutes, and then ultrasonically cleaning at 29 and 30 kHz for 90-120 minutes. The secondary enzymatic hydrolysis solution contains cellulase, lipase and pectinase, which can decompose the residual plant impurities in the wool. The conditions are mild, avoiding the harsh conditions of high acid and high temperature used in the traditional carbonization process. High acid and high temperature conditions will damage the wool structure while carbonizing the plant impurities in the wool, and reduce the breaking strength of the wool. In addition, the traditional carbonization process must be followed by mechanical and airflow treatment to separate the carbon from the wool, and a subsequent neutralization process must be performed to reduce the acid content in the wool. Therefore, the secondary enzymatic hydrolysis of the wool in this application can gently remove plant impurities in the wool, avoid multiple subsequent processing steps, save a lot of production costs, protect the environment, enhance the breaking strength of the wool, and improve the quality and utilization value of the wool. Centrifugal dehydration is performed to obtain primary enzymatic hydrolyzed wool; 4) Rinse: Place the enzymatically hydrolyzed wool in clean water and rinse it repeatedly 2 to 3 times. Simply rinsing the wool can remove plant decomposition impurities in the wool. This is because plant impurities can be decomposed into small and light impurities after being treated with multiple enzymes and can be easily rinsed away, saving a lot of preparation process and production costs. Centrifuge to remove water to obtain rinsed wool. 5) Drying: The bleached wool is placed in a dryer and dried at 60-70°C until the moisture content is 6-10%. The lower the drying temperature, the more likely it is to maintain the wool's structure and increase its breaking strength. After drying, the wool is subsequently gilled and combed. The resulting wool fiber can be used for textiles, expanding the scope of use and value of wool. This is dried wool. 6) Post-processing: The dried wool is needle-thinned and combed to process the wool fibers.

[0022] Manufacturing process: (1) Use a computerized flat knitting machine or an ordinary flat knitting machine to knit, ensuring that the needle type, structure, and appearance of the cashmere sweater meet the design requirements. During the knitting process, pay attention to controlling the tension and density of the yarn to ensure the flatness and elasticity of the cashmere sweater; (2) Shrink the knitted cashmere sweaters to make them softer and fuller; select the wool to remove the stray hair and different-colored fibers attached to the cashmere sweaters; iron and inspect the cashmere sweaters to ensure that they have a smooth and flawless appearance.

[0023] 1) Using cashmere fiber, bamboo fiber, and chitosan fiber as the main raw materials, an antibacterial and antistatic fabric formula system is constructed. The mixed fiber of the three undergoes antibacterial pretreatment, yarn making and yarn structure modification, cloth weaving and cloth structure modification, and antistatic treatment. Finally, a finished polyester fabric with excellent antibacterial and antistatic properties is produced. The entire production process uses a blended spinning method, which has long-lasting antibacterial and antistatic effects and effectively reduces costs.

[0024] 2) In order to address the defects of cashmere fibers, such as poor water absorption, air permeability and dyeability, the hydrophilic group structure modification process is applied to the cashmere fibers to modify their structure, so that the cashmere fibers have good hydrophilicity and moisture absorption rate, and the antibacterial agent and water-soluble polymer are fully fixed and adsorbed on the fibers, providing a guarantee for long-lasting antibacterial and antistatic properties.

[0025] 3) The fabric is woven using a composite fiber weaving method. The three fibers in the constructed ratio are alternately spun into a multi-layer structure. The bamboo fiber and chitosan fiber are bonded along the axial direction of the cashmere fiber, ensuring that the spinning during fabric weaving is not prone to peeling and does not affect the final peelability of the fiber, providing convenience for subsequent fabric use in various applications.

[0026] 4) For mortar pretreatment, the introduction of biomass graphene as a dispersant can give the yarn its far-infrared emission, antibacterial, anti-ultraviolet, negative ion generation and other properties. It can be combined with subsequent antibacterial agents and antistatic solutions to form a strong antibacterial and antistatic system, which can achieve better protection for human health and safety and expand the application field of project products.

[0027] 5) Using the impregnation elasticity-preserving technology, the fabric is impregnated in an antistatic solution before final shaping and then super-fed wet cloth is used for shaping, which greatly reduces the elasticity loss of the fabric, ensures the water absorption of the fabric and improves the durability of the antistatic performance.

[0028] 6) Develop a cashmere anti-fracture reinforcement treatment process, which uses biological reagents for gentle treatment during the treatment process, avoiding the use of chemical reagents. This can not only protect the environment, but also avoid chemical reagents causing damage to the wool structure and resulting in lower wool structure fracture strength, expand the scope of wool use, and increase wool added value.

[0029] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0030] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An antibacterial and antistatic functional fabric for cashmere sweaters, characterized in that: The raw materials of the antibacterial and antistatic functional fabric for cashmere sweaters include: Bamboo fiber, chitosan fiber, cashmere fiber; Among them, the raw materials of bamboo fiber, chitosan fiber and cashmere fiber are single yarn with high twist and reverse low twist; The surface of the raw material of the antibacterial and antistatic functional fabric for the cashmere sweater is treated by soaking in antibacterial agents and antistatic agents.

2. The antibacterial and antistatic functional fabric for cashmere sweaters according to claim 1, characterized in that: The bamboo fiber and chitosan fiber have a single yarn density of 20 tex, a twist of 950 twists / m, and an S twist, and are paralleled with a 2.22 tex single-strand cashmere fiber to form a double yarn with a twist of 400 twists / m and a Z twist. The yarn is steamed at 92° C. for 10 minutes to set the yarn.

3. The antibacterial and antistatic functional fabric for cashmere sweaters according to claim 1, characterized in that: The cashmere sweater uses antibacterial and antistatic functional fabrics with large color blocks and adds a woven houndstooth pattern to shorten the floating length of the jacquard loops, making the fabric structure stable and the cloth surface smooth.

4. The antibacterial and antistatic functional fabric for cashmere sweaters according to claim 1, characterized in that: The raw material for antibacterial is an antibacterial agent composed of tetrapod-shaped zinc oxide whiskers and polyhexamethylene biguanide, and the raw material for antistatic is an antistatic agent of quaternary ammonium salt.

5. A production process for the antibacterial and antistatic functional fabric for cashmere sweaters according to any one of claims 1 to 4, characterized in that: The specific steps of the production process of the antibacterial and antistatic functional fabric for cashmere sweaters are as follows: S1: Wool washing: The collected wool is sorted to remove damaged wool that cannot be used. The sorted wool is then placed in hot water and ultrasonically soaked for 50-60 minutes to remove obvious impurities in the wool for later processing. The wool is then drained to obtain clean wool. S2: Primary enzymatic hydrolysis: The cleaned wool is placed in the primary enzymatic hydrolysis solution, stirred evenly, and ultrasonically cleaned at 28-30kHz for 90-120 minutes. The primary enzymatic hydrolysis solution contains lipase, which is used to ultrasonically treat the wool to accelerate the separation and decomposition of lanolin from the wool surface by lipase, reducing the residual lanolin to 0.6-0.8%, thus avoiding the need for subsequent wool mixing and oiling. This not only avoids the use of chemical reagents in the wool washing process, but also eliminates the need for subsequent wool mixing and oiling procedures, saving a lot of production costs. The wool is then centrifuged to remove water, thereby obtaining the primary enzymatic hydrolyzed wool. S3: Secondary enzymatic hydrolysis: Place the first enzymatic hydrolysis wool in the secondary enzymatic hydrolysis solution, mix well, keep warm and soak for 30-40 minutes, then ultrasonically clean for 90-120 minutes at 29 and 30kHz. The secondary enzymatic hydrolysis solution contains cellulase, lipase and pectinase, which can decompose the residual plant impurities in the wool. The conditions are mild, avoiding the high acid and high temperature harsh conditions used in the traditional carbonization process. S4: Rinse: Place the enzymatically hydrolyzed wool in clean water and rinse it repeatedly for 2 to 3 times. Simply rinsing the wool can remove plant decomposition impurities in the wool, because plant impurities can be decomposed into small and light impurities after being treated with multiple enzymes and can be easily rinsed away. Centrifuge to remove water to obtain rinsed wool; S5: Drying: Place the bleached wool in a dryer and dry it at 60-70°C until the moisture content is 6-10%. The lower the temperature during drying, the more likely it is to maintain the wool's structure and increase its breaking strength. After drying, subsequent gilling and combing are performed to prepare cashmere fibers, thus obtaining dried wool; S6: Post-processing: needle-feeding and combing the dried wool to obtain processed cashmere fibers; S7: Bamboo fiber, chitosan fiber, cashmere fiber single yarn high twist ply reverse low twist yarn form, so that the yarn achieves the effect of loose outside and tight inside; S8: Adding a houndstooth pattern similar to woven patterns to large color blocks in knitted fabrics shortens the jacquard loop float length, stabilizes the fabric structure, and creates a smooth surface. S9: Apply formulated antimicrobial agents and antistatic agents to achieve excellent antimicrobial and antistatic properties.