A method for producing spunlace nonwoven fabrics with efficient finishing of mugwort components

Abstract

A method for producing a spunlace nonwoven fabric with an efficient finishing effect of mugwort ingredients comprises the following steps: Step 1: Debleaching raw cotton fibers using a hydrogen peroxide activation treatment solution, carding them into a web, and then hydroentangling them to obtain a reinforced spunlace fabric; Step 2: Spraying the reinforced spunlace fabric with a chitosan modification solution and a nonionic emulsifier. After the first spray reaction is complete, spraying the reinforced spunlace fabric with a microcapsule solution is performed a second time. After the spraying is completed, the sprayed spunlace fabric is obtained, wherein the microcapsules in the microcapsule solution contain mugwort active ingredients; Step 3: Drying the sprayed spunlace fabric to obtain the final product, i.e., the spunlace nonwoven fabric with an efficient finishing effect of mugwort ingredients. This design enhances the firmness of the bond between the mugwort active ingredients and the raw cotton fibers.

Description

Technical Field

[0001] The invention relates to an improvement of a production process of wormwood spunlace fabric, belongs to the field of textiles, and in particular to a production method of spunlace non-woven fabric with efficient finishing of wormwood components. Background Art

[0002] Spunlace nonwovens (also known as spunlace or water-needle nonwovens) are produced using water as a medium. The fiber web is pre-wetted, carded, hydraulically stretched, formed, and reinforced using high-pressure, fine water jets. These nonwovens feature interwoven fibers, a stable structure, multi-layered, uniform fiber distribution, consistent longitudinal and transverse strength, abrasion resistance, lightweight, flexibility, antistatic properties, and tear resistance. Spunlace nonwovens are widely used in various fields, including hygiene products (such as sanitary napkins and wet wipes), medical supplies (such as surgical gowns and masks), filtration materials (such as air filters and liquid filters), and packaging materials (such as cushioning and food packaging).

[0003] Mugwort, also known as Artemisia argyi or fragrant wormwood, is a plant with a strong aroma that belongs to the genus Artemisia. It is characterized by short grayish-white hairs covering the stems and leaves, thick papery leaves with notched teeth, and fine serrations on the edges of the lobes. Mugwort is a perennial herb that usually blooms in summer, and the flowers are mostly light yellow or yellow-green. Modern research shows that mugwort has multiple pharmacological effects, such as antibacterial, anti-inflammatory, antioxidant, anti-tumor, and antiviral. Mugwort contains volatile oils, flavonoids, phenylpropanoids, fatty acids, and trace elements. Volatile oil is one of its main active ingredients. However, the current method of combining mugwort and cotton fiber mostly adopts physical compression, which results in poor stability of the combination.

[0004] The Chinese patent application with application number CN202010237521.4 and application date of March 20, 2020 discloses a mugwort-modified fiber fabric. The mugwort-modified fiber fabric disclosed in the present invention is made of a blend of three layers of functional fibers. The inner and outer fiber layers are woven from cotton fibers modified with mugwort antibacterial factors as warp and weft, and the middle layer fiber is woven from polyester fibers modified with super absorbent starch as warp and weft. The fiber fabric prepared by the present invention has the characteristics of long-lasting antibacterial performance, long service life, air permeability, excellent water absorption and moisture absorption properties, and the preparation method is simple, low cost, and suitable for industrial production; however, the above technical solution still does not solve the problem of poor stability of the combination of mugwort and cotton fibers.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0006] The purpose of the present invention is to overcome the problem of poor bonding stability between mugwort and cotton fibers in the prior art, and to provide a method for producing a spunlace nonwoven fabric with high efficiency for finishing mugwort components, which has strong bonding stability between mugwort and cotton fibers.

[0007] To achieve the above objectives, the technical solution of the present invention is: a method for producing a spunlace nonwoven fabric with efficient finishing of mugwort components, the method comprising the following steps:

[0008] Step 1: First, the raw cotton fibers are debleached and treated with a hydrogen peroxide activation solution, then carded into a web, and then hydroentangled to obtain a reinforced hydroentangled fabric;

[0009] Step 2: First, the reinforced spunlace fabric is subjected to a first spraying treatment, wherein the spraying material is a solution including chitosan and a non-ionic emulsifier. After the first spraying reaction is completed, a second spraying is performed, wherein the spraying material is a microcapsule solution. After the spraying is completed, the spunlace fabric is obtained after the spraying, wherein the microcapsules in the microcapsule solution contain the effective ingredients of mugwort;

[0010] Step three: drying the sprayed spunlace fabric to obtain the final product, namely the spunlace nonwoven fabric with efficient finishing of mugwort components.

[0011] The step 1 of using hydrogen peroxide activation solution to debleach the raw cotton fibers refers to:

[0012] The raw cotton fibers are placed in a hydrogen peroxide activation treatment solution and soaked for 4-6 hours at a temperature of 40-60°C.

[0013] The hydrogen peroxide activation treatment solution contains hydrogen peroxide with a concentration of 4-6 g / L, sodium bicarbonate with a concentration of 3-6 g / L, tetraacetylethylenediamine with a concentration of 2-3 g / L, and cellulase with a concentration of 2-3 g / L.

[0014] The raw cotton fibers are placed in a hydrogen peroxide activation treatment solution and soaked for 4 hours at a temperature of 60°C.

[0015] The carding into a web in step 1 is specifically as follows: first, the debleached raw cotton fibers are carded into single fibers using a carding machine, and then a web is laid to obtain a fiber web. The fiber web is then conveyed into a hydroentanglement area, where high-pressure water is continuously sprayed to form water needles, which pass through the fiber web and hydroentangle it, and then the fiber web is shaped after entanglement.

[0016] The solution of chitosan and non-ionic emulsifier in step 2 includes: the mass percentage concentration of chitosan is 25%-35%, the concentration of non-ionic emulsifier is 6-12 g / L, the non-ionic emulsifier is any one of alkylphenol polyoxyethylene ether, polyoxyethylene ether, polyoxypropylene ether or any mixture thereof, and the solvent is water; the microcapsule solution refers to: the solute in the microcapsule solution is the effective ingredient of wormwood, and the concentration of the effective ingredient of wormwood is 10-30 g / L.

[0017] The contents of the components in the microcapsule solution are as follows: 10-30 g / L of effective ingredients of mugwort, 50-100 g / L of maltodextrin, 50-100 g / L of whey protein and 50-100 g / L of trehalose. The maltodextrin, whey protein and trehalose constitute the capsule wall material of the microcapsule.

[0018] The effective ingredient of the wormwood is 20g / L, the maltodextrin is 75g / L, the whey protein is 100g / L, and the trehalose is 50g / L.

[0019] In the step 2, after the first spraying reaction is completed, the interval between the second spraying is 5 to 10 minutes.

[0020] In the step 2, the nozzle feed flow rate of the first spray is 0.5-0.8 L / h, and the nozzle feed flow rate of the second spray is 0.3-0.6 L / h;

[0021] In the step 3, a drying box is used for drying, the flow rate of the blower equipment in the drying box is 20-30m3 / h, the temperature of the drying box is 80-120°C, and the cloth travel speed is 40-60m / min.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In a method for producing a spunlace nonwoven fabric with an efficient finishing of wormwood components, the raw cotton fibers are first debleached and bleached using a hydrogen peroxide activation treatment liquid, then combed into a web, and then spunlace reinforced to obtain reinforced spunlace fabric. The reinforced spunlace fabric is first sprayed for the first time, and the spraying material is a solution including chitosan and a nonionic emulsifier. After the first spray reaction is completed, a second spraying is performed, and the spraying material is a microcapsule solution. After the spraying is completed, the misted spunlace fabric is obtained, and the microcapsules in the microcapsule solution contain wormwood active ingredients. When used, the hydrogen peroxide activation liquid can effectively remove impurities such as pectin and fat on the surface of the cotton fibers, clean the surface of the raw cotton fibers, and make the subsequent hydrogen peroxide activation liquid Cellulase etches the cotton fiber surface, providing attachment sites for microcapsule arrangement. Since there is also a charge layer on the cotton fiber surface, the first spray is sprayed with chitosan modified liquid and nonionic emulsifier. Chitosan changes the charge on the surface of the raw cotton fiber, allowing the microcapsules sprayed for the second time to enter the corresponding attachment sites. As the drying proceeds, the water between the microcapsules and the raw cotton fiber evaporates, and the van der Waals force between the microcapsules and the raw cotton fiber strengthens, resulting in a better combination. The firmness of the wormwood active ingredient combined with the raw cotton fiber is stronger. At the same time, the emulsion stabilizer can prevent the microcapsules from disintegrating early in a liquid environment. In addition, the extracted wormwood active ingredient removes impurities, allowing its pharmacological components to better play a role, and the pharmacological effect is better. Therefore, the firmness of this design combination is stronger and the pharmacological effect is good.

[0024] 2. In the present invention, a spunlace nonwoven production method for efficiently arranging wormwood components is provided, wherein the wormwood active ingredient is 10-30g / L, maltodextrin is 50-100g / L, whey protein is 50-100g / L, and trehalose is 50-100g / L, and the wormwood active ingredient is located in the microcapsule. During application, the active ingredient of wormwood is inside the capsule, and the active ingredient can only rely on its molecular motion during the process of emitting. It belongs to a sustained-release process, and the drug effect can be slowly and continuously exerted. The persistence of the pharmacological effect is stronger. In addition, the whey protein ratio is large, which can increase the antioxidant capacity of the embedded material and better ensure the pharmacological activity of the wormwood component. The trehalose ratio is small, which can increase the content of the wormwood component in the microcapsule. Therefore, the present design has a long-lasting and stable drug effect.

[0025] 3. In the present invention, a method for producing spunlace nonwovens with efficient mugwort finishing incorporates mugwort finishing into the spunlace process. The fabric after spunlace is directly subjected to the first spray treatment and then dried during the second spraying process. This reduces the drying process after spunlace and allows the fabric to be dried after modification, thus saving steps and costs. The liquid required for spray modification is much less than that required for immersion, thus conserving water. Furthermore, drying the spunlace in a sprayed state consumes less energy than drying the spunlace in a soaked state, further conserving water and energy. Therefore, this design is water- and energy-efficient, and has a low cost.

[0026] 4. In the present invention's highly efficient spunlace nonwoven fabric production method featuring mugwort, the hydrogen peroxide-activated de-bleaching system effectively removes impurities from the cotton fiber surface. Cellulase also helps disintegrate cottonseed hulls on the cotton fiber surface, aiding de-bleaching. Prioritizing de-bleaching results in fabric with relatively high breaking strength and elongation. Consequently, the fabric is highly flexible and effectively removes impurities.

[0027] 5. In the present invention's method for efficiently producing spunlace nonwovens containing mugwort, spray nozzles are arranged in one or more rows, located above and below the fabric surface, parallel to the fabric's width. Each nozzle can be individually shut off based on production line speed and fabric width, achieving wide coverage. This design offers high adjustability and wide spray coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a spray schematic diagram of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown, a method for producing a spunlace nonwoven fabric with high efficiency of finishing mugwort components, the method for producing a spunlace nonwoven fabric with high efficiency of finishing mugwort components comprises the following steps:

[0031] Step 1: First, the raw cotton fibers are debleached and treated with a hydrogen peroxide activation solution, then carded into a web, and then hydroentangled to obtain a reinforced hydroentangled fabric;

[0032] Step 2: First, the reinforced spunlace fabric is subjected to a first spraying treatment, wherein the spraying material is a solution including chitosan and a non-ionic emulsifier. After the first spraying reaction is completed, a second spraying is performed, wherein the spraying material is a microcapsule solution. After the spraying is completed, the spunlace fabric is obtained after the spraying, wherein the microcapsules in the microcapsule solution contain the effective ingredients of mugwort;

[0033] Step three: drying the sprayed spunlace fabric to obtain the final product, namely the spunlace nonwoven fabric with efficient finishing of mugwort components.

[0034] The step 1 of using hydrogen peroxide activation solution to debleach the raw cotton fibers refers to:

[0035] The raw cotton fibers are placed in a hydrogen peroxide activation treatment solution and soaked for 4-6 hours at a temperature of 40-60°C.

[0036] The hydrogen peroxide activation treatment solution contains hydrogen peroxide with a concentration of 4-6 g / L, sodium bicarbonate with a concentration of 3-6 g / L, tetraacetylethylenediamine with a concentration of 2-3 g / L, and cellulase with a concentration of 2-3 g / L.

[0037] The raw cotton fibers are placed in a hydrogen peroxide activation treatment solution and soaked for 4 hours at a temperature of 60°C.

[0038] The carding into a web in step 1 is specifically as follows: first, the debleached raw cotton fibers are carded into single fibers using a carding machine, and then a web is laid to obtain a fiber web. The fiber web is then conveyed into a hydroentanglement area, where high-pressure water is continuously sprayed to form water needles, which pass through the fiber web and hydroentangle it, and then the fiber web is shaped after entanglement.

[0039] The solution of chitosan and non-ionic emulsifier in step 2 includes: the mass percentage concentration of chitosan is 25%-35%, the concentration of non-ionic emulsifier is 6-12 g / L, the non-ionic emulsifier is any one of alkylphenol polyoxyethylene ether, polyoxyethylene ether, polyoxypropylene ether or any mixture thereof, and the solvent is water; the microcapsule solution refers to: the solute in the microcapsule solution is microcapsule, the solvent is water, and the concentration of the effective ingredient of wormwood in the microcapsule solution is 10-30 g / L.

[0040] The contents of the components in the microcapsule solution are as follows: 10-30 g / L of effective ingredients of mugwort, 50-100 g / L of maltodextrin, 50-100 g / L of whey protein and 50-100 g / L of trehalose. The maltodextrin, whey protein and trehalose constitute the capsule wall material of the microcapsule.

[0041] The effective ingredient of the wormwood is 20g / L, the maltodextrin is 75g / L, the whey protein is 100g / L, and the trehalose is 50g / L.

[0042] In the step 2, after the first spraying reaction is completed, the interval between the second spraying is 5 to 10 minutes.

[0043] In the step 2, the nozzle feed flow rate of the first spray is 0.5-0.8 L / h, and the nozzle feed flow rate of the second spray is 0.3-0.6 L / h;

[0044] In the step 3, a drying box is used for drying, the flow rate of the blower equipment in the drying box is 20-30m3 / h, the temperature of the drying box is 80-120°C, and the cloth travel speed is 40-60m / min.

[0045] The principle of the present invention is explained as follows: cellulase in the hydrogen peroxide activation solution etches the cotton fiber surface, providing attachment sites for microcapsule finishing. The chitosan modification solution changes the charge on the cotton fiber surface, allowing the microcapsules to enter the corresponding attachment sites, resulting in chemical bonds between the microcapsules and the cotton fiber surface. As drying proceeds, the moisture between the microcapsules and the cotton fibers evaporates, the secondary bond between the microcapsules and the cotton fibers is strengthened, and the bond is more secure.

[0046] Example 1:

[0047] A method for producing a spunlace nonwoven fabric with an efficient finishing of mugwort components, the method comprising the following steps:

[0048] Step 1: First, the raw cotton fibers are debleached and treated with a hydrogen peroxide activation solution, then carded into a web, and then hydroentangled to obtain a reinforced hydroentangled fabric;

[0049] Step 2: First, the reinforced spunlace fabric is subjected to a first spraying treatment, wherein the spraying material is a solution including chitosan and a non-ionic emulsifier. After the first spraying reaction is completed, a second spraying is performed, wherein the spraying material is a microcapsule solution. After the spraying is completed, the spunlace fabric is obtained after the spraying, wherein the microcapsules in the microcapsule solution contain the effective ingredients of mugwort;

[0050] Step three: drying the sprayed spunlace fabric to obtain the final product, namely the spunlace nonwoven fabric with efficient finishing of mugwort components.

[0051] When applied: The hydrogen peroxide activation system debleaching can effectively remove impurities on the surface of cotton fibers, making them have good moisture absorption properties. Then, they are hydroentangled to obtain spunlace cloth, and then sprayed. Since the cloth is originally wet after hydroentanglement, the wet spunlace cloth enters the dryer and then comes out of the cloth to achieve the effect of complete drying. Therefore, the original drying process is integrated with the spray finishing. The two sprays are arranged in the first half and the second half of the drying process respectively. When the spunlace cloth enters the dryer, the spray operation integrated in the drying process starts to spray, because the chitosan modified liquid will first contact the cloth in the first half, and will receive the wormwood finishing when the cloth reaches the second half. Integrating the wormwood microcapsule finishing into the hydroentanglement process saves the process flow and improves the preparation efficiency. At the same time, the stability of the combination of wormwood and cotton fiber is stronger.

[0052] Example 2:

[0053] Example 2 is basically the same as Example 1, except that:

[0054] A method for producing spunlace nonwoven fabrics with efficient finishing of mugwort components, wherein a hydrogen peroxide activation treatment liquid contains 4-6 g / L of hydrogen peroxide, 3-6 g / L of sodium bicarbonate, 2-3 g / L of tetraacetylethylenediamine, and 2-3 g / L of cellulase, and raw cotton fibers are immersed in the hydrogen peroxide activation treatment liquid for 4-6 hours at a temperature of 40-60°C.

[0055] When applying:

[0056] Experimental data shows that 6g / L of hydrogen peroxide treatment is generally the best. If the concentration is too low, the debleaching effect will be poor and the whiteness will be poor. If the concentration is too high, it will cause significant damage to the cotton fibers. However, considering that spray finishing will be performed later, it is not necessary to pursue a very high whiteness. However, some other impurities such as cottonseed hulls and hemicellulose still require a certain amount of oxidation to remove, so the amount of hydrogen peroxide here can be appropriately reduced.

[0057] The main function of the alkaline substance sodium bicarbonate is to help hydrogen peroxide decompose oxidative components and remove oily substances through saponification reaction. If the concentration is too low, the whiteness and hygroscopicity of the raw cotton fiber will be reduced. If the concentration is too high, the hydrogen peroxide will decompose too quickly, resulting in ineffective decomposition, which will not only damage the fiber, but also the decomposed oxidative components cannot be fully used for bleaching, and the whiteness may even be reduced.

[0058] The role of tetraacetylethylenediamine activator is also to help hydrogen peroxide decompose into oxidizing components. Its dosage is adjusted according to the amount of hydrogen peroxide used. Usually, their ratio is 2:1. If the concentration is too low, it will not play the role of assisting the decomposition of hydrogen peroxide, the whiteness will be reduced, and the impurity removal effect will also be affected. If the concentration is too high, hydrogen peroxide will be ineffectively decomposed.

[0059] More than 90% of cotton fiber is cellulose. Cellulase acts on raw cotton fiber to decompose part of the cellulose to achieve the purpose of finishing the fiber surface and improving the effect of subsequent spraying. Therefore, if the concentration is too low, this effect cannot be achieved. If the concentration is too high, too much cellulose will be decomposed and the fiber structure will be excessively damaged, which is not conducive to the quality of the product.

[0060] The temperature control here is also for energy saving. The higher the temperature, the better the de-bleaching effect. At the same time, a mild temperature can also ensure the activity of the enzyme. Therefore, if the temperature is too low, the de-bleaching effect will be poor and the water absorption cannot be guaranteed. If the temperature is too high, the energy consumption will be high and the enzyme activity will be affected. The best temperature is around 60℃.

[0061] Under the premise of controlling the temperature at a low level, if the reaction time is too short, the de-bleaching effect will be poor, and if the reaction time is too long, the fiber will be damaged. Usually, better results can be achieved in about 4 hours.

[0062] Example 3:

[0063] Example 3 is basically the same as Example 1, except that:

[0064] A method for producing a spunlace nonwoven fabric with an efficient finishing of mugwort components, comprising: firstly subjecting the reinforced spunlace fabric to a first spraying treatment, wherein the spraying material is a chitosan modified liquid; after the first spraying is completed, a second spraying is performed, wherein the spraying material is a microcapsule solution; after the spraying is completed, a misted spunlace fabric is obtained; wherein the chitosan mass percentage concentration of the solution and the nonionic emulsifier in the step 2 are 25%-35%, and the concentration of the nonionic emulsifier is 6-12 g / L; the nonionic emulsifier is any one of alkylphenol polyoxyethylene ether, polyoxyethylene ether, and polyoxypropylene ether, or any mixture thereof; and the solvent is water; and the microcapsule solution comprises: the solute in the microcapsule solution is an effective component of mugwort, and the concentration of the effective component of mugwort is 10-30 g / L.

[0065] Preferably, the content of each component in the microcapsule solution is: 10-30 g / L of effective ingredient of mugwort, 50-100 g / L of maltodextrin, 50-100 g / L of whey protein, and 50-100 g / L of trehalose, and the maltodextrin, whey protein, and trehalose constitute the capsule wall material of the microcapsule;.

[0066] When applying:

[0067] The debleaching and bleaching treatment of raw cotton ensures the basic performance of spunlace fabric while playing a modifying role. Cellulase etches the surface of raw cotton fiber, providing attachment sites for microcapsule finishing. At the same time, cellulase can also help disintegrate cottonseed shells on the surface of raw cotton fiber, assisting debleaching. After chitosan finishing, the microcapsules are combined with the surface of raw cotton fiber. At the same time, spray finishing uses less water and is easy to dry. In the process of rapid drying, water is removed, the van der Waals force between microcapsules and raw cotton fibers is enhanced, and the bonding effect is better. The extracted effective ingredients of wormwood remove impurities, so that its pharmacological components can better play their role and have better pharmacological effects.

[0068] Example 4:

[0069] Example 4 is basically the same as Example 1, except that:

[0070] In the step 2, after the first spraying reaction is completed, the interval between the second spraying is 5 to 10 minutes; in the step 2, the nozzle feed flow rate of the first spray is 0.5-0.8L / h, and the nozzle feed flow rate of the second spray is 0.3-0.6L / h; in the step 3, a drying box is used for drying, the flow rate of the blower equipment in the drying box is 20-30m3 / h, the temperature of the drying box is 80-120℃, and the cloth travel speed is 40-60m / min.

[0071] There is a certain time interval between the first spray and the second spray, because the time interval between the two sprays ensures that the modifier and emulsifier fully penetrate the fabric. The hydroentangled fabric itself contains water. After the microcapsules are sprayed on it, the microcapsules may disintegrate in the liquid environment of the fabric itself. Emulsion stabilizers can solve this problem and ensure that the microcapsules are stable after being sprayed on the hydroentangled fabric. At the same time, the use of non-ionic emulsifiers can prevent the emulsifier from affecting the chitosan modification effect.

[0072] Example 4:

[0073] Example 4 is basically the same as Example 1, except that:

[0074] A method for producing a spunlace nonwoven fabric with an efficient finishing of mugwort components, wherein the microcapsule solution is prepared by a spray drying method, and the method for producing a spunlace nonwoven fabric with an efficient finishing of mugwort components comprises the following steps;

[0075] Step 1: First, the raw cotton fibers are debleached and treated with a hydrogen peroxide activation solution, then carded into a web, and then hydroentangled to obtain a reinforced hydroentangled fabric;

[0076] Step 2: First, the reinforced spunlace fabric is subjected to a first spraying treatment. The spraying material is a solution including chitosan and a non-ionic emulsifier. After the first spraying reaction is completed, a second spraying is performed. The spraying material is a solution mixed with the effective ingredients of wormwood and the capsule wall material. The sprayed droplets are sprayed by atomization. The sprayed droplets are dried under the action of high-temperature dry air. When they fall on the spunlace fabric, they form a microcapsule structure and are combined with the cotton material on the spunlace fabric. After the spraying is completed, the spunlace fabric after the mist is obtained;

[0077] Step 3: Dry the spunlace fabric after misting to obtain the final product, that is, the spunlace nonwoven fabric with efficient finishing of mugwort components.

[0078] Example 5:

[0079] Example 5 is basically the same as Example 1, except that:

[0080] A method for producing a spunlace nonwoven fabric with an efficient finishing of mugwort components, the method comprising the following steps:

[0081] Step 1: opening and combing the raw cotton fibers into a web, and then hydroentangling to obtain a reinforced hydroentangled fabric;

[0082] Step 2: Soak the reinforced spunlace fabric in a hydrogen peroxide activation treatment solution containing 4 g / L hydrogen peroxide, 5 g / L sodium bicarbonate, 2 g / L tetraacetylethylenediamine, and 2 g / L cellulase for 4 hours at a temperature of 60° C. to obtain a debleached spunlace fabric;

[0083] Step 3: First, the bleached spunlace fabric is subjected to a first spraying treatment. The spraying material is a solution including chitosan and a non-ionic emulsifier. After the first spraying reaction is completed, a second spraying is performed. The spraying material is a microcapsule solution. After the spraying is completed, the spunlace fabric is obtained after the misting. The microcapsules in the microcapsule solution contain the effective ingredients of mugwort.

[0084] Step 4: drying the misted spunlace fabric to obtain the final product, namely the spunlace nonwoven fabric with efficient finishing of mugwort components.

[0085] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A method for producing a spunlace nonwoven fabric with efficient finishing of mugwort components, characterized by: The method for producing a spunlace nonwoven fabric with efficient finishing of mugwort components comprises the following steps: Step 1: First, the raw cotton fibers are debleached and treated with a hydrogen peroxide activation solution, then carded into a web, and then hydroentangled to obtain a reinforced hydroentangled fabric; The hydrogen peroxide activation treatment solution contains hydrogen peroxide at a concentration of 4-6 g / L, sodium bicarbonate at a concentration of 3-6 g / L, tetraacetylethylenediamine at a concentration of 2-3 g / L, cellulase at a concentration of 2-3 g / L, and the rest is water; Step 2: First, the reinforced spunlace fabric is subjected to a first spraying treatment, wherein the spraying material is a solution including chitosan and a non-ionic emulsifier. After the first spraying reaction is completed, a second spraying is performed, wherein the spraying material is a microcapsule solution. After the spraying is completed, the spunlace fabric is obtained after the spraying, wherein the microcapsules in the microcapsule solution contain the effective ingredients of mugwort; The solution of chitosan and non-ionic emulsifier in step 2 includes: the mass percentage concentration of chitosan is 25%-35%, the concentration of non-ionic emulsifier is 6-12 g / L, the non-ionic emulsifier is polyoxyethylene ether, and the solvent is water; the microcapsule solution refers to: the solute in the microcapsule solution is microcapsule, the solvent is water, and the concentration of the effective ingredient of wormwood in the microcapsule solution is 10-30 g / L; Step three: drying the sprayed spunlace fabric to obtain the final product, namely the spunlace nonwoven fabric with efficient finishing of mugwort components.

2. The method for producing a spunlace nonwoven fabric with high efficiency of finishing mugwort components according to claim 1, characterized in that: The step 1 of using hydrogen peroxide activation solution to debleach the raw cotton fibers refers to: The raw cotton fibers are placed in a hydrogen peroxide activation treatment solution and soaked for 4-6 hours at a temperature of 40-60°C.

3. The method for producing a spunlace nonwoven fabric with high efficiency of finishing mugwort components according to claim 2, characterized in that: The raw cotton fibers are placed in a hydrogen peroxide activation treatment solution and soaked for 4 hours at a temperature of 60°C.

4. The method for producing a spunlace nonwoven fabric with high efficiency finishing of mugwort components according to claim 1, characterized in that: The carding into a web in step 1 is specifically as follows: first, the debleached raw cotton fibers are carded into single fibers using a carding machine, and then a web is laid to obtain a fiber web. The fiber web is then conveyed into a hydroentanglement area, where high-pressure water is continuously sprayed to form water needles, which pass through the fiber web and hydroentangle it, and then the fiber web is shaped after entanglement.

5. The method for producing a spunlace nonwoven fabric with high efficiency finishing of mugwort components according to claim 1, characterized in that: The contents of the components in the microcapsule solution are as follows: 10-30 g / L of effective ingredients of mugwort, 50-100 g / L of maltodextrin, 50-100 g / L of whey protein and 50-100 g / L of trehalose. The maltodextrin, whey protein and trehalose constitute the capsule wall material of the microcapsule.

6. The method for producing a spunlace nonwoven fabric with high efficiency finishing of mugwort components according to claim 5, characterized in that: The effective ingredient of the wormwood is 20g / L, the maltodextrin is 75g / L, the whey protein is 100g / L, and the trehalose is 50g / L.

7. The method for producing a spunlace nonwoven fabric with high efficiency finishing of mugwort components according to claim 1, characterized in that: In the step 2, after the first spraying reaction is completed, the interval between the second spraying is 5 to 10 minutes.

8. The method for producing a spunlace nonwoven fabric with high efficiency finishing of mugwort components according to claim 1, characterized in that: In the step 2, the nozzle feed flow rate of the first spray is 0.5-0.8 L / h, and the nozzle feed flow rate of the second spray is 0.3-0.6 L / h; In the step 3, a drying box is used for drying, the flow rate of the blower equipment in the drying box is 20-30m3 / h, the temperature of the drying box is 80-120°C, and the cloth travel speed is 40-60m / min.

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