Fluffy and stiff spunlace non-woven fabric as well as preparation method and application thereof

Abstract

The invention relates to the technical field of non-woven fabrics, in particular to a fluffy and stiff spunlace non-woven fabric and a preparation method and application thereof. The invention provides a preparation method of a fluffy and stiff spunlace non-woven fabric. The preparation method comprises the following steps: obtaining a carded web; carrying out modification treatment on the carded cotton web to obtain a modified cotton web; the modified cotton web is subjected to first drying and spunlace reinforcement treatment, and a spunlace fiber web semi-finished product is obtained; the spunlace fiber web semi-finished product is dried for the second time, and the fluffy and stiff spunlace non-woven fabric is obtained; in the modification treatment, the carded cotton web and the finishing liquid are put into a working tank to be subjected to intermediate dipping treatment, and the speed is 50-60 m / min; after the dipping treatment, the liquid carrying rate of the modified cotton web is 110-120%. According to the preparation method, through modification treatment and spunlace reinforcement, the prepared spunlace non-woven fabric has the fluffy and stiff characteristics, the durability and friction force of the spunlace non-woven fabric are enhanced, and the cleaning effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of nonwoven fabrics, in particular to a fluffy and stiff spunlace nonwoven fabric and a preparation method and application thereof. Background Art

[0002] As an important nonwoven material, spunlace nonwovens are widely used in disposable sanitary products, cleaning products and applications that require good air circulation due to their good water absorption and air permeability. With the continuous advancement of science and technology and the growing demand of various industries, the performance requirements of spunlace nonwovens are also constantly improving. At present, the market demand for spunlace nonwovens is not limited to its basic functions, but also requires it to have characteristics such as fluffy and stiff to meet more complex application scenarios.

[0003] At present, the main production process of spunlace nonwovens includes the steps of opening and removing impurities from fiber raw materials, combing and laying, impregnation and modification, drying and shaping, and spunlace reinforcement. Through these steps, spunlace nonwoven products with different characteristics can be produced. However, with the increasing market demand for fluffy and stiff spunlace nonwovens, traditional production processes have been unable to meet this demand.

[0004] In order to meet the market demand for fluffy and stiff spunlace nonwovens, technicians have conducted a lot of research and improvement. Among them, the technical route of modifying the carded cotton web / cotton roll, reinforcing it with spunlace, and drying it to obtain fluffy spunlace nonwovens has received widespread attention. This technical route changes the properties of the cotton web by adding specific finishing liquids, such as waterproofing agents, cross-linking agents, stiffening agents, etc., to achieve a fluffy and stiff effect.

[0005] Common spunlace nonwoven wipes are too soft and easily deformed and pulled under certain uses (such as disposable cleaning products), resulting in breakage and holes. When wiping the surface of an object, the cleaning effect is poor due to insufficient friction. Moreover, compared with traditional textile wiping products, they are thinner and can only be used 1-2 times, which is a big waste. However, the current preparation process cannot produce spunlace nonwovens with strong friction and good durability.

[0006] To this end, the present application provides a fluffy and stiff spunlace nonwoven fabric and a preparation method and application thereof. Summary of the invention

[0007] In response to the technical problems of current spunlace non-woven fabrics such as being too soft and easy to deform, easy to break and have holes, poor cleaning effect and thin thickness, the preparation method described in this application, through modification treatment and spunlace reinforcement, makes the prepared spunlace non-woven fabric fluffy and stiff, enhances its durability and friction, and improves the cleaning effect.

[0008] The technical solution adopted by this application to solve its technical problem is:

[0009] In a first aspect, the present application provides a method for preparing a fluffy and stiff spunlace nonwoven fabric, comprising the following steps:

[0010] Obtain the carded cotton web;

[0011] Performing modification treatment on the carded cotton web to obtain a modified cotton web;

[0012] The modified cotton web is subjected to a first drying and hydroentanglement treatment to obtain a hydroentangled fiber web semi-finished product;

[0013] Drying the spunlace web semi-finished product for a second time to obtain a fluffy and stiff spunlace non-woven fabric;

[0014] The modification treatment is to put the carded cotton web and the finishing liquid into a working tank for immersion treatment at a speed of 50-60 m / min; after the immersion treatment, the liquid carrying rate of the modified cotton web is 110-120%.

[0015] In some specific embodiments, the carded cotton web is a fiber web weighing 30-200 g.

[0016] In some specific embodiments, the finishing solution, in units of weight volume, includes the following raw materials:

[0017] Waterproofing agent 10-30g / L, cross-linking agent 30-50g / L, stiffening agent 5-15g / L.

[0018] In some specific embodiments, the first drying is performed at a temperature of 150-180° C. and a speed of 20-40 m / min.

[0019] In some specific embodiments, the cotton web is cooled after the first drying and then subjected to a hydroentanglement reinforcement treatment.

[0020] In some specific embodiments, the second drying is performed at a temperature of 90-120° C. and a speed of 30-50 m / min.

[0021] In some specific embodiments, the waterproofing agent is at least one of C6 waterproofing agent, polysiloxane, polyurethane resin, and fluorine-free waterproofing agent TF501A.

[0022] In some specific embodiments, the cross-linking agent is at least one of dopaphenol, TF569G, isocyanate, and silicate; the stiffening agent is at least one of polyacrylate and polyvinyl acetate.

[0023] In a second aspect, the present application provides a fluffy and stiff spunlace nonwoven fabric, including the fluffy and stiff spunlace nonwoven fabric prepared by the preparation method described in the first aspect.

[0024] In a third aspect, the present application provides an application of a fluffy and stiff spunlace nonwoven fabric, wherein the fluffy and stiff spunlace nonwoven fabric prepared by the preparation method described in the first aspect or the fluffy and stiff spunlace nonwoven fabric described in the second aspect is applied to disposable cleaning products.

[0025] The beneficial effects of this application are:

[0026] The preparation method described in the present application is to modify the carded cotton web by impregnating it with a finishing liquid (including a waterproofing agent, a cross-linking agent and a stiffening agent) in a working tank so that the cotton web is charged with a certain amount of finishing liquid, thereby changing its original properties; the modified cotton web is dried for the first time so that the effective ingredients of the finishing liquid are fully retained and adhered to the cotton web, and then consolidated and shaped after drying. After that, a hydroentanglement reinforcement treatment is performed to enhance the strength and stability of the cotton web. Finally, a second drying is performed to obtain a fluffy and stiff spunlace non-woven fabric. The preparation method described in the present application, through modification and hydroentanglement reinforcement, makes the prepared spunlace non-woven fabric have the characteristics of fluffy and stiffness, enhances its durability and friction, and improves the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 This is a process flow chart of the method for preparing the fluffy and stiff spunlace nonwoven fabric described in this application. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] In this application, the term "and / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0031] In the present application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c", can all represent: a, b, c, ab (i.e., a and b), ac, bc, or ab c, where a, b, c can be single or multiple, respectively.

[0032] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution, some or all of the steps can be executed in parallel or sequentially, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0033] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] The weight of the relevant components mentioned in the embodiment description of the present application can not only refer to the specific content of each component, but also represent the proportional relationship between the weights of the components. Therefore, as long as the content of the relevant components is proportionally enlarged or reduced according to the embodiment description of the present application, it is within the scope disclosed in the embodiment description of the present application. Specifically, the mass described in the embodiment description of the present application can be a mass unit known in the chemical industry such as μg, mg, g, kg, etc.

[0035] The terms "first" and "second" are used only for descriptive purposes to distinguish objects such as substances from each other, and should not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. For example, without departing from the scope of the embodiments of the present application, the first XX may also be referred to as the second XX, and similarly, the second XX may also be referred to as the first XX. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0036] like Figure 1 As shown, the present application provides a method for preparing a fluffy and stiff spunlace nonwoven fabric, comprising the following steps:

[0037] Obtain the carded cotton web;

[0038] Performing modification treatment on the carded cotton web to obtain a modified cotton web;

[0039] The modified cotton web is subjected to a first drying and hydroentanglement treatment to obtain a hydroentangled fiber web semi-finished product;

[0040] Drying the spunlace web semi-finished product for a second time to obtain a fluffy and stiff spunlace non-woven fabric;

[0041] The modification treatment is to put the carded cotton web and the finishing liquid into a working tank for immersion treatment at a speed of 50-60 m / min; after the immersion treatment, the liquid carrying rate of the modified cotton web is 110-120%.

[0042] In the above preparation method, the combed cotton web is modified, dried for the first time, and then subjected to a spunlace reinforcement treatment and a second drying to obtain a fluffy spunlace nonwoven fabric; the gram weight of the fluffy spunlace nonwoven fabric ranges from 30 to 150 g, and of course the gram weight of the fluffy spunlace nonwoven fabric can also be customized according to the usage scenario. The above preparation method has low cost, simple process, and is convenient for industrial production.

[0043] In some embodiments, the carded cotton web is a 30-200g fiber web.

[0044] Specifically, the process of obtaining the combed cotton web is as follows:

[0045] Loosening and removing impurities: loosening the fiber raw materials and removing impurities to obtain the loosened fiber raw materials; combing and web-laying the loosened fiber raw materials to make them evenly distributed into a fiber web of 30-200g, and obtaining a combed cotton web.

[0046] In some embodiments, the finishing solution comprises the following ingredients in units of weight and volume:

[0047] Waterproofing agent 10-30g / L, cross-linking agent 30-50g / L, stiffening agent 5-15g / L.

[0048] In some specific embodiments, the waterproofing agent is at least one of C6 waterproofing agent, polysiloxane, polyurethane resin, and fluorine-free waterproofing agent TF501A.

[0049] In some specific embodiments, the cross-linking agent is at least one of dopaphenol, TF569G, isocyanate, and silicate; the stiffening agent is at least one of polyacrylate and polyvinyl acetate.

[0050] Specifically, the modification process is as follows:

[0051] The preparation of finishing liquid includes the following processes:

[0052] ① Prepare an appropriate amount of water in the working tank, and the working tank should be sealed when working;

[0053] ② After the working tank is heated to 170℃ and kept at a constant temperature, add waterproofing agent at a rate of 10-30g / L and start stirring;

[0054] ③After stirring for 5 minutes, add the cross-linking agent at 30-50g / L and continue stirring;

[0055] ④ After stirring for 5 minutes, add a stiffener according to 5-15g / L of stiffener and stir for 10 minutes; add an appropriate amount of pH adjuster and mix thoroughly until the pH of the finishing liquid is adjusted to the range of 5-6;

[0056] The carded cotton web is placed in the finishing liquid and subjected to an immersion treatment (at 170° C.) at a speed of 50-60 m / min. After the immersion treatment, the liquid carrying rate of the modified cotton web is 110-120%.

[0057] Specifically, the liquid pick-up rate refers to the percentage of weight gain of the cotton web after absorbing the finishing liquid during the modification process compared to the original weight.

[0058] In some embodiments, the first drying temperature is 150-180°C and the speed is 20-40 m / min. In the present application, the first drying can make the effective ingredients of the finishing liquid added to the modified cotton web fully retained and adhered to the cotton web, and solidify and shape it after drying to achieve a stiff feel.

[0059] It can be understood that the modification treatment is to put the combed cotton web and finishing liquid into a working tank for immersion treatment, so that the cotton web absorbs specific components in the finishing liquid (such as waterproofing agent, cross-linking agent, stiffening agent, etc.), thereby changing the original properties of the cotton web to achieve the desired waterproofing, stiffening and other effects; through the modification treatment, the spunlace non-woven fabric can be given fluffy and stiff characteristics, while enhancing its waterproof performance, broadening the application range of the spunlace non-woven fabric, and solving the problem that traditional spunlace non-woven fabrics may lack fluffy and stiff characteristics and cannot meet the needs of specific application scenarios.

[0060] In some embodiments, the cotton web is cooled after the first drying (bellows box temperature is 25° C., cotton web running speed is 30 m / min, and then subjected to hydroentanglement reinforcement treatment after cooling: pre-wetting pressure is 1 bar, and hydroentanglement pressure is 20 bar.

[0061] It can be understood that by performing a cooling treatment, the structure and performance of the cotton web can be further stabilized to prevent it from being deformed or damaged due to physical effects such as thermal expansion and contraction.

[0062] It can be understood that the hydroentanglement treatment is to use high-pressure water to spray the cotton web, so that the fibers in the cotton web are intertwined and entangled to form a tighter structure, thereby improving the strength and stability of the cotton web. Through the hydroentanglement treatment, the strength and stability of the cotton web can be significantly improved, making it more durable and meeting the needs of specific application scenarios.

[0063] In some embodiments, the second drying is performed at a temperature of 90-120° C. and a speed of 30-50 m / min.

[0064] It is understandable that the cotton mesh after hydroentanglement treatment still contains a certain amount of moisture, which needs to be removed to ensure its hardness and stability. Through the second drying, the moisture in the cotton mesh can be further removed to achieve the required hardness and stability, thereby meeting the needs of specific application scenarios.

[0065] The following describes the invention in conjunction with specific embodiments.

[0066] The raw materials used in the following implementation cases can be purchased from the market, or they can be obtained by self-preparation. As an example, the information on the raw material acquisition methods during the specific implementation of the present invention is shown in Table 1 below.

[0067] Table 1

[0068]

[0069]

[0070] Example 1

[0071] The method for preparing a fluffy and stiff spunlace nonwoven fabric comprises the following steps:

[0072] S1. Opening and removing impurities: opening the fiber raw materials and removing impurities;

[0073] S2. Combing and laying the web, combing the fiber raw material after opening, so that it is evenly distributed into a quantitative 45g web;

[0074] S3. Preparation of finishing liquid

[0075] The weight volume composition of the finishing liquid is: 10 g / L of fluorine-free waterproofing agent TF501A, 5 g / L of polyurethane resin (CAS No.: 9009-54-5), 30 g / L of special waterproof crosslinking agent TF569G, 5 g / L of polyacrylate, and citric acid to adjust the pH to 5-6.

[0076] S4. Impregnation and first drying

[0077] The carded cotton web and finishing liquid are placed in a working tank for medium immersion treatment (at 170°C) at a speed of 50 m / min; after the immersion treatment, the liquid carrying rate of the modified cotton web is 110%;

[0078] The modified cotton web is dried for the first time at a temperature of 160° C. and a speed of 20 m / min.

[0079] S5. Bellows cooling, cooling the cotton web after the first drying, and further shaping it;

[0080] S6. Spunlace, using a spunlace machine to spunlace the fiber web obtained after the first drying;

[0081] S7. Second drying, the fiber web after spunlace reinforcement is dried for the second time, the drying temperature is 100°C, and the speed is 30m / min;

[0082] S8. Rolling: Rolling the fiber web after the second drying to obtain a fluffy and stiff spunlace nonwoven fabric with a gram weight of 45 g.

[0083] Example 2

[0084] The method for preparing a fluffy and stiff spunlace nonwoven fabric comprises the following steps:

[0085] S1. Opening and removing impurities: opening the fiber raw materials and removing impurities;

[0086] S2. Combing and laying the web, combing the fiber raw material after opening, so that it is evenly distributed into a quantitative 30g web;

[0087] S3. Preparation of finishing liquid

[0088] The weight volume composition of the finishing liquid is: 15 g / L of fluorine-free waterproofing agent TF501A, 10 g / L of polyurethane resin (from Guangdong Demei Fine Chemical Group Co., Ltd.), 40 g / L of special waterproof crosslinking agent TF569G, 10 g / L of polyacrylate, and citric acid to adjust the pH to 5-6;

[0089] S4. Impregnation and first drying

[0090] The carded cotton web and finishing liquid are placed in a working tank for medium immersion treatment (at 170°C) at a speed of 60m / min; after the immersion treatment, the liquid carrying rate of the modified cotton web is 120%;

[0091] The modified cotton web is dried for the first time at a temperature of 170°C and a speed of 20m / min;

[0092] S5. Bellows cooling, cooling the cotton web after the first drying, and further shaping it;

[0093] S6. Spunlace, using a spunlace machine to spunlace the fiber web obtained after the first drying;

[0094] S7. Second drying, the fiber web after spunlacing is dried for the second time, the drying temperature is 110°C, and the speed is 50m / min;

[0095] S8. Rolling: Rolling the fiber web after the second drying to obtain a fluffy and stiff spunlace nonwoven fabric with a gram weight of 45 g.

[0096] Example 3

[0097] The method for preparing a fluffy and stiff spunlace nonwoven fabric comprises the following steps:

[0098] S1. Opening and removing impurities: opening the fiber raw materials and removing impurities;

[0099] S2. Combing and laying the web, combing the fiber raw material after opening, so that it is evenly distributed into a quantitative 30g web;

[0100] S3. Preparation of finishing liquid

[0101] The weight and volume composition of the finishing liquid is: 25 g / L of fluorine-free waterproofing agent TF501A, 15 g / L of polyurethane resin, 50 g / L of special waterproof crosslinking agent TF569G, 15 g / L of polyacrylate, and citric acid to adjust the pH to 5-6;

[0102] S4. Impregnation and first drying

[0103] The carded cotton web and finishing liquid are placed in a working tank for medium immersion treatment (at 170°C) at a speed of 55 m / min; after the immersion treatment, the liquid carrying rate of the modified cotton web is 115%;

[0104] The modified cotton web is dried for the first time at a temperature of 180°C and a speed of 20 m / min.

[0105] S5. Bellows cooling, cooling the cotton web after the first drying, and further shaping it;

[0106] S6. Spunlace, using a spunlace machine to spunlace the fiber web obtained after the first drying;

[0107] S7. Second drying, the fiber web after spunlacing is dried for the second time, the drying temperature is 130°C, and the speed is 50m / min;

[0108] S8. Rolling: Rolling the fiber web after the second drying to obtain a fluffy and stiff spunlace nonwoven fabric with a gram weight of 45 g.

[0109] Comparative Example 1

[0110] The method for preparing a spunlace nonwoven fabric comprises the following steps:

[0111] S1. Opening and removing impurities: opening the fiber raw materials and removing impurities;

[0112] S2. Combing and laying the web, combing the fiber raw material after opening, so that it is evenly distributed into a quantitative 30g web;

[0113] S3. Use water spunlace machine for reinforcement;

[0114] S4. Drying, drying temperature 110 ° C, speed 50m / min;

[0115] S5. Roll the product to obtain a fluffy and stiff spunlace nonwoven fabric having a gram weight of 45 g.

[0116] Comparative Example 2

[0117] The method for preparing a spunlace nonwoven fabric comprises the following steps:

[0118] In step S3 of preparing the finishing liquid, the weight volume composition of the finishing liquid is: 10 g / L of fluorine-free waterproofing agent TF501A and 5 g / L of polyurethane resin; the other conditions are the same as those in Example 1.

[0119] Comparative Example 3

[0120] The method for preparing a spunlace nonwoven fabric comprises the following steps:

[0121] In step S3 of preparing the finishing liquid, the weight volume composition of the finishing liquid is: 30 g / L of the special waterproof crosslinking agent TF569G; the other conditions are the same as those in Example 1.

[0122] Comparative Example 4

[0123] The method for preparing a spunlace nonwoven fabric comprises the following steps:

[0124] In step S3 of preparing the finishing solution, the weight volume composition of the finishing solution is: polyacrylate 5 g / L; the other conditions are the same as those in Example 1.

[0125] Comparative Example 5

[0126] The method for preparing a spunlace nonwoven fabric comprises the following steps:

[0127] In step S3, the finishing liquid is prepared. The weight volume composition of the finishing liquid is: 10 g / L of fluorine-free waterproofing agent TF501A, 5 g / L of polyurethane resin, 30 g / L of special waterproof crosslinking agent TF569G, and 5 g / L of polyacrylate. The other conditions are the same as those in Example 1.

[0128] 1. Comparison of conventional physical and chemical indicators

[0129] The nonwoven fabrics prepared in Examples 1-3 and Comparative Examples 1-5 were used as conventional wipes and the following performance tests were performed. The results are shown in Table 2 below:

[0130] Table 2

[0131]

[0132]

[0133] 2. Comparison of actual wiping performance

[0134] Experimental materials: Examples 1-3 and Comparative Examples 1-5, prepared into several 20*20 cm wipes;

[0135] Simulated wiping surfaces: glass plates, ceramic plates, stainless steel surfaces;

[0136] Pollutant samples: oil stains, water stains, dust mixture;

[0137] Experimental steps and evaluation methods:

[0138] Evenly apply a certain amount of contaminant sample on the simulated wiping surface

[0139] Use a wipe to wipe the combination of the stain and the wipe surface. After wiping 2-5 times, score the deformation and the degree of holes and fuzzing. The scoring criteria are shown in Table 3 below:

[0140] Table 3

[0141] Score / Evaluation Criteria Deformability Hole Raised 0 No deformation No holes or fuzzing 1 Slight deformation, size change <10% Slightly raised 2 Slight deformation, size change 10%-20% Slightly fuzzy, with individual knots 3 Size changes 20-30% Severe fuzzing and fiber entanglement 4 Size changes 30-50% Severe pilling, thinning and transparency 5 Size change > 50% Severe pilling and holes

[0142] Record the data of each group of surfaces and stains wiped, calculate the individual mean and record them, calculate the total mean for overall evaluation

[0143] In the experiment, the scores of the samples of the above Examples 1-3 and Comparative Examples 1-5 are shown in Table 4 below:

[0144] Table 4

[0145]

[0146]

[0147]

[0148] Therefore, based on the comparison of the above conventional physical and chemical indicators and actual wiping performance, it can be seen that the three fluffy and stiff spunlace non-woven fabrics of Examples 1 to 3 prepared by the present invention have greatly improved thickness, stiffness and wiping performance compared to the wipes made by the conventional spunlace process, and the deformability and hole and fuzzing conditions are also excellent; in addition, a water-repellent additive is added to the preparation method in the present application, which slows down the water absorption time, but after a certain period of time, the water absorption amount is increased. This is because the fluffy structure provides more water storage space.

[0149] Moreover, the stiff spunlace nonwoven fabric prepared by the present invention has broad application scenarios and durability in the field of wipes.

[0150] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for preparing a fluffy and stiff spunlace nonwoven fabric, characterized in that: The following steps are involved: Obtain the carded cotton web; Performing modification treatment on the carded cotton web to obtain a modified cotton web; The modified cotton web is subjected to a first drying and hydroentanglement treatment to obtain a hydroentangled fiber web semi-finished product; Drying the spunlace web semi-finished product for a second time to obtain a fluffy and stiff spunlace non-woven fabric; The modification treatment is to put the carded cotton web and the finishing liquid into a working tank for immersion treatment at a speed of 50-60 m / min; after the immersion treatment, the liquid carrying rate of the modified cotton web is 110-120%.

2. The preparation method according to claim 1, characterized in that: The carded cotton web is a fiber web of 30-200g.

3. The preparation method according to claim 1, characterized in that: The finishing liquid, in units of weight volume, includes the following raw materials: Waterproofing agent 10-30g / L, cross-linking agent 30-50g / L, stiffening agent 5-15g / L.

4. The preparation method according to claim 1, characterized in that: The first drying is performed at a temperature of 150-180° C. and a speed of 20-40 m / min.

5. The preparation method according to claim 1, characterized in that: The cotton web after the first drying is cooled and then subjected to a hydroentanglement reinforcement treatment.

6. The preparation method according to claim 1, characterized in that: The second drying is performed at a temperature of 90-120° C. and a speed of 30-50 m / min.

7. The preparation method according to claim 3, characterized in that: The waterproofing agent is at least one of C6 waterproofing agent, polysiloxane, polyurethane resin, and fluorine-free waterproofing agent TF501A.

8. The preparation method according to claim 3, characterized in that: The crosslinking agent is at least one of dopamin, TF569G, isocyanate and silicate; the stiffening agent is at least one of polyacrylate and polyvinyl acetate.

9. Fluffy and stiff spunlace nonwoven fabric, characterized in that: The invention comprises a fluffy and stiff spunlace nonwoven fabric prepared by the preparation method according to any one of claims 1 to 8.

10. Application of fluffy and stiff spunlace nonwoven fabric, characterized in that: The fluffy and stiff spunlace nonwoven fabric prepared by the preparation method according to any one of claims 1 to 8 or the fluffy and stiff spunlace nonwoven fabric according to claim 9 is applied to disposable cleaning products.

Images