Preparation method of double-sided maintenance and cleaning non-woven material

Abstract

The invention discloses a preparation method of a double-sided maintenance and cleaning non-woven material. The preparation method comprises the following steps: (1) pre-reinforcing a polyester fiber needling process; (2) paving the PP gridding cloth at the upper ends of the polyester fibers; (3) paving the PP spunbond cloth at the upper end of the PP gridding cloth; (4) performing off-line spunlace and dehydration on the fine denier viscose fibers, and paving the fine denier viscose fibers at the upper end of the PP spunbond cloth; (5) performing spunlace composite reinforcement to prepare a composite fiber layer; (6) uniformly spraying a water-based emulsion of an anionic acrylate copolymer onto the surface of the polyester fiber, and drying with hot air; and (7) spraying anhydrous maintenance essential oil of ethoxylated straight-chain alcohol and white mineral oil onto the surface of the fine denier viscose fiber. Through a continuous production process, a non-woven material with one side attached with a floor maintenance material and the other side having viscidity and used for adsorbing dust and hair is produced at a time, and the two sides can be torn off from the non-woven material. The PP gridding cloth and the PP spunbond cloth are easier to separate, the materials on the two sides cannot be damaged, and the stability is better.

Description

Technical Field

[0001] The invention belongs to the technical field of nonwoven fabrics, and in particular relates to a preparation method of a double-sided maintenance and cleaning nonwoven material. Background Art

[0002] Cleaning and maintenance of wooden floors are essential to maintaining their beauty and extending their service life. Before cleaning wooden floors, you must first clean the dust on the floor surface. You can use a soft brush or vacuum cleaner, and avoid using hard brushes or metal parts to avoid scratching the floor surface. This step is very important basic work, which can prevent dust and detergent from mixing to form dirt during the subsequent cleaning process, thereby wearing out the floor surface. Then, use a clean soft cloth, mop or special application tool to evenly apply the curing agent on the wooden floor surface and wait for it to dry and absorb.

[0003] A Chinese patent document with publication number CN211862720U discloses a disposable friction slow-release floor wipe, comprising a base layer and a plurality of raised glue dots, wherein the base layer is a non-woven fabric soaked in a mixture of RO pure water and alcohol, and the raised glue dots are semicircular solids formed by beeswax and orange oil wrapped in a silicone shell, and the raised glue dots are evenly arranged on the base layer in a dot matrix form. When in use, the base layer is squeezed to release a mixture with a cleaning effect, and the raised glue dots are subjected to friction, the silicone shell is broken, and the beeswax and orange oil inside are released, thereby cleaning and waxing the floor.

[0004] In the above patent solution, raised glue spots wrapped with maintenance materials are provided on the non-woven fabric. Although it is convenient for floor maintenance, the manufacturing process of this kind of wet wipes is complicated. It is necessary to first manufacture the non-woven fabric, and then process the maintenance material and glue spots onto the non-woven fabric. In addition, the silica gel particles produced after the glue spots are worn have no effect on floor maintenance. The silica gel particles need to be cleaned again after the maintenance is completed, which increases the workload. In addition, in actual use, it is still necessary to use another clean cloth or tool to clean the floor in advance. Therefore, the floor maintenance process is still cumbersome. Summary of the invention

[0005] In order to overcome the technical problems in the prior art that wet wipes with floor maintenance materials have a complex manufacturing process, residual silica gel particles will be generated on the floor after use, and additional tools or materials are required during the maintenance process; one purpose of the present invention is to provide a preparation method of a double-sided maintenance and cleaning non-woven material, which produces a non-woven material with one side for cleaning the floor and the other side for maintaining the floor at one time through a continuous production process, wherein the side for cleaning the floor is provided with a dust holding gap and is attached with a sticky additive, thereby increasing the floor cleaning effect; the side for maintaining the floor is attached with maintenance materials, thereby reducing the tools and materials required for maintenance, and the two sides can also be torn apart from the middle to prevent dust and impurities attached to the other side from falling off during the floor maintenance process.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: a preparation method of a double-sided maintenance and cleaning non-woven material, comprising the following steps:

[0007] (1) After the polyester fibers are opened, they are combed into a web by a carding machine and then pre-reinforced by a hydroentanglement process;

[0008] (2) Lay the PP mesh cloth on the upper end of the polyester fiber through an unwinding machine;

[0009] (3) Lay the PP spunbond fabric on the top of the PP mesh fabric through an unwinding machine;

[0010] (4) After the fine denier viscose fiber is combed into a web by a carding machine, it is hydroentangled and dehydrated offline, and then laid on the upper end of the PP spunbond fabric by an unwinding machine;

[0011] (5) Compounding and reinforcing the above four-layer fiber web structure through a hydroentanglement process to form a composite fiber layer;

[0012] (6) spraying the aqueous emulsion of the anionic acrylic copolymer uniformly onto the surface of the polyester fibers in the composite fiber layer through a spraying device, and then performing hot air drying;

[0013] (7) spraying anhydrous curing essential oil of ethoxylated straight-chain alcohol and white mineral oil uniformly onto the surface of the fine-denier viscose fiber of the composite fiber layer through a spraying device;

[0014] (8) Finally, the nonwoven material is obtained.

[0015] This preparation method connects and fixes different functional layers to each other through a continuous production process, thereby obtaining a multifunctional composite structure layer with dust removal function on one side and maintenance function on the other side; the production steps and production costs of floor maintenance wipes are simplified, and the non-woven material produced will not produce impurities during use, ensuring the cleaning effect of the floor. In addition, the aqueous emulsion of anionic acrylate copolymer has viscosity after hot air drying, which improves the adsorption function of dirt such as dust and hair.

[0016] The surface of the material has a high temperature after drying. A spray device is used to apply an anhydrous curing essential oil of ethoxylated straight-chain alcohol and white mineral oil to the surface of fine-denier viscose fiber. This can minimize the damage of the curing essential oil to the function of the drying high temperature and give full play to its curing function. There is no need to wait for the material to cool down before proceeding to the next production process, thereby improving production efficiency.

[0017] Furthermore, in the non-woven material finally obtained, the PP mesh cloth and the PP spunbond cloth can be torn apart; and a plurality of cavities are formed on one side where the polyester fibers are located after the hydroentanglement jacquard process.

[0018] The PP mesh cloth is not only helpful in increasing the thickness of the non-woven material, increasing the porosity of the material, and thus improving the cleaning ability of the material; it can also effectively improve the overall strength of the material and reduce the deformation rate of the material during the wiping process.

[0019] Since PP spunbond is highly hydrophobic, conventional spunlace technology is prone to cause adhesion after tearing, which will damage the PP mesh cloth. Therefore, the polyester fiber and fine-denier viscose fiber are pre-strengthened by spunlace respectively to give the fiber net a certain degree of entanglement strength. After compounding with other functional layers, further spunlace reinforcement can not only effectively compound the materials, but also avoid adhesion after tearing. PP mesh cloth can also enhance the overall strength of the product and prevent it from deforming during use; PP spunbond plays a barrier role to prevent the maintenance materials in the fine-denier viscose fiber from penetrating into the polyester fiber.

[0020] Specifically, the glass transition temperature of the aqueous emulsion of the anionic acrylate copolymer is -55°C, and its mass accounts for 8%-16% of the total mass of the polyester fiber.

[0021] Specifically, the total mass of the anhydrous curing essential oil of the ethoxylated straight-chain alcohol and white mineral oil accounts for 30%-50% of the mass of the fine denier viscose fiber.

[0022] Ethoxylated straight-chain alcohols not only help the penetration and even distribution of floor essential oils, thereby improving the care effect of the floor, but also enhance the antistatic properties of the floor, reduce the impact of static electricity on the floor, and prevent the adhesion of dust and dirt; while white mineral oil has good lubricity, moisture resistance, anti-slip properties and protective properties, further improving the floor maintenance function and floor service life.

[0023] Specifically, the total mass of the polyester fiber and the aqueous emulsion of the anionic acrylate copolymer accounts for 45% to 65% of the total mass of the non-woven material; the mass of the PP mesh cloth accounts for 4% to 8% of the total mass of the non-woven material; the mass of the PP spunbond cloth accounts for 7% to 15% of the total mass of the non-woven material; the remainder is the fine denier viscose fiber and the anhydrous curing essential oil of the ethoxylated straight-chain alcohol and white mineral oil.

[0024] Specifically, the specification of the PP mesh cloth is 5-6 g / ㎡; the specification of the PP spunbond cloth is 11-13 g / ㎡.

[0025] Specifically, the polyester fiber has a fineness of 2.5 dtex-8 dtex and a length of 25 mm-50 mm; the fineness of the fine denier viscose fiber is 0.3-1.5 dtex.

[0026] The polyester fiber can be a coarse denier polyester fiber, a synthetic fiber with a larger fineness, whose surface is rough and easily generates static electricity due to friction. The material made of it has a larger gap, which can not only enhance the cleaning ability of the material, but also further enhance the dust holding rate of the material.

[0027] Preferably, in step (1), the hydroentanglement pressure is set to 20 kg; in step (4), the off-line hydroentanglement pressure is set to 35 kg.

[0028] Different hydroentanglement pressures are based on the different functionalities of each fiber layer. The polyester fiber layer needs to ensure better fluffiness and increase its dust holding capacity, while the fine-denier viscose fiber layer requires better density.

[0029] Preferably, in step (5), the hydroentanglement process performs trapezoidal hydroentanglement jacquard on the polyester fiber surface; the hydroentanglement pressure is 35kg, 40kg, 40kg, 40kg in the processing order.

[0030] The trapezoidal spunlace jacquard is beneficial to increase the contact area of ​​the polyester fiber layer, thereby improving the dust holding effect; in addition, the setting of the spunlace pressure parameters can not only make the multi-layer fiber web structure have better composite fastness and provide higher strength for the material, but also ensure that the non-woven material is relatively easy to tear.

[0031] Preferably, the nonwoven material has a mass per unit area of ​​70 g / m 2 -150g / m 2 .

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The present invention uses a continuous production process to produce a non-woven material with a floor maintenance material attached to one side and a sticky non-woven material for absorbing dust and hair at one time. The production process is streamlined and the production cost is low. The non-woven material reduces the tools and materials required in the floor maintenance process, which helps to improve work efficiency and reduce manual workload.

[0034] 2. The non-woven material produced by the present invention can be torn apart on both sides, and the two sides can be used separately. Especially when performing floor maintenance, it can prevent dust and hair attached to the other side from falling off and affecting the maintenance effect of the floor.

[0035] 3. The present invention performs spunlace pre-reinforcement on polyester fiber and fine-denier viscose fiber respectively, and then performs spunlace composite reinforcement on the four-layer material. On the premise of improving the bonding strength of the four layers, the PP mesh cloth and the PP spunbond cloth can be separated more easily. During the tearing process, the materials on both sides will not be damaged, and the stability is better.

[0036] 4. After the polyester fiber layer of the present invention is subjected to jacquard spunlace, a cavity is formed in the fiber layer, which has better fluffiness. The aqueous emulsion combined with the acrylic copolymer has viscosity and has a better cleaning effect on impurities such as dust and hair, and does not have the problem of common non-woven mopping cloths being prone to mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a production process flow chart of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the present invention;

[0039] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0040] Figure 4 Schematic diagram of the testing method of the present invention.

[0041] In the figure: 1. Polyester fiber; 2. PP mesh cloth; 3. PP spunbond cloth; 4. Fine denier viscose fiber. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0043] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise specified and limited, the terms "setting", "installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] See also Figure 1-Figure 4 , a preparation method of a double-sided maintenance and cleaning non-woven material, comprising the following steps:

[0047] (1) After opening the polyester fiber with a fineness of 2.5 dtex-8 dtex and a length of 25 mm-50 mm, the fiber is combed into a web by a carding machine, and then pre-reinforced by a hydroentanglement process, with the hydroentanglement pressure set to 20 kg;

[0048] (2) Lay the PP mesh cloth with a specification of 5-6g / ㎡ on the upper end of the polyester fiber through an unwinding machine;

[0049] (3) Lay the PP spunbond fabric with a specification of 11-13 g / ㎡ on the upper end of the PP mesh fabric through an unwinding machine;

[0050] (4) After the fine denier viscose fiber with a fineness of 0.3-1.5 dtex is combed into a web by a carding machine, it is hydroentangled and dehydrated offline, and the hydroentanglement pressure is set to 35 kg, and it is laid on the upper end of the PP spunbond fabric by an unwinding machine;

[0051] (5) Compounding and reinforcing the above four-layer fiber web structure through a trapezoidal spunlace process to form a composite fiber layer, and the spunlace pressure is 35 kg, 40 kg, 40 kg, and 40 kg in the processing order;

[0052] (6) spraying the aqueous emulsion of the anionic acrylic copolymer uniformly onto the surface of the polyester fibers in the composite fiber layer through a spraying device, and then performing hot air drying;

[0053] (7) spraying anhydrous curing essential oil of ethoxylated straight-chain alcohol and white mineral oil uniformly onto the surface of the fine-denier viscose fiber of the composite fiber layer through a spraying device;

[0054] (8) The final product is Figure 2 and Figure 3 The mass per unit area is shown as 70 g / m 2 -150g / m 2 of the nonwoven material.

[0055] Figure 1The viscosity aid is an aqueous emulsion of anionic acrylate copolymer; the curing material is an anhydrous curing essential oil of ethoxylated straight-chain alcohol and white mineral oil; Figure 2 and Figure 3 Among them, 1 is polyester fiber; 2 is PP mesh cloth; 3 is PP spunbond cloth; 4 is fine denier viscose fiber.

[0056] The glass transition temperature of the aqueous emulsion of the anionic acrylate copolymer is -55°C, and its mass accounts for 8%-16% of the total mass of the polyester fiber.

[0057] The total mass of the anhydrous curing essential oil of the ethoxylated straight-chain alcohol and white mineral oil accounts for 30%-50% of the mass of the fine-denier viscose fiber.

[0058] Among them, the total mass of the polyester fiber and the aqueous emulsion of the anionic acrylate copolymer accounts for 45% to 65% of the total mass of the non-woven material; the mass of the PP mesh cloth accounts for 4% to 8% of the total mass of the non-woven material; the mass of the PP spunbond cloth accounts for 7% to 15% of the total mass of the non-woven material; the remainder is the fine denier viscose fiber and the anhydrous curing essential oil of the ethoxylated straight-chain alcohol and white mineral oil.

[0059] Example 1

[0060] The specific implementation options are: the polyester fiber fineness is 2.78dtex and the length is 38mm; the mass of the aqueous emulsion of anionic acrylic copolymer accounts for 10% of the total mass of the polyester fiber; the fine denier viscose fiber fineness is 1.1dtex; the overall weight of the material is 120g / m 2 .

[0061] Comparative Example 1

[0062] The only difference from Example 1 is that the mass of the aqueous emulsion of the anionic acrylate copolymer accounts for 5% of the total mass of the polyester fiber.

[0063] Comparative Example 2

[0064] The only difference from Example 1 is that the mass of the aqueous emulsion of the anionic acrylate copolymer accounts for 20% of the total mass of the polyester fiber.

[0065] Comparative Example 3

[0066] The only difference from Example 1 is that the overall mass per unit area of ​​the material is 150.3 g / m 2 .

[0067] Comparative analysis of test data:

[0068] Test purpose: Example 1, Comparative Example 1, Comparative Example 2 and Comparative Example 3 were tested respectively to test the unit area mass, breaking strength and dust holding capacity of the materials, and a comparative analysis was performed.

[0069] Test method:

[0070] (1) Mass per unit area: Tested in accordance with GB / T 24218.1 Textiles - Test methods for nonwoven fabrics - Part 1: Determination of mass per unit area;

[0071] (2) Breaking strength: Tested in accordance with GBT / 24218.3 "Textile nonwoven fabric test methods Part 3: Determination of breaking strength and elongation at break (strip method)";

[0072] (3) Dust holding capacity (g / m 2 )

[0073] The test method is as follows:

[0074] ①Cut the material to be tested into a size of 20cm×20cm and weigh it as m1;

[0075] ② Weigh 1 gram of dust and sprinkle it on the designated area of ​​the test instrument (such as Figure 4 (a), the area marked by the black line on the instrument);

[0076] ③ Spread the sample on the white square slide of the equipment (such as Figure 4 (b)) below and fix it with a special clamp (the specimen is required to be along the direction of the slideway in the longitudinal direction), start the instrument and rub back and forth for 5 cycles;

[0077] ④ Carefully remove the sample and weigh it as m2;

[0078] ⑤The amount of dust adsorbed per square meter after wiping the material is defined as the dust absorption amount.

[0079] Test results analysis

[0080] Dust holding capacity:

[0081] Since the mass of the aqueous emulsion of the anionic acrylate copolymer in the material of comparative example 1 accounts for 5% of the total mass of the polyester fiber, the dust holding capacity of the material of comparative example 1 is reduced by 25.5% compared with that of embodiment 1; in addition, the mass of the aqueous emulsion of the anionic acrylate copolymer in the material of comparative example 2 accounts for 20% of the total mass of the polyester fiber, so that the dust holding capacity of the material of comparative example 2 is increased by 29.5% compared with that of embodiment 1; it can be seen that the lower the content of the aqueous emulsion of the anionic acrylate copolymer, the lower the dust holding capacity of the material; however, when the content of the aqueous emulsion of the anionic acrylate copolymer is too high, the surface of the material will be severely adhered when it is wound, which will easily damage the appearance and use of the material.

[0082] Secondly, although the mass per unit area of ​​the material in Comparative Example 3 is 150.3 g / m 2 , but the dust holding capacity of the material is increased by 4.5% compared with Example 1, and the improvement effect is not significant, indicating that when the material unit area mass is too high, its influence on the dust holding capacity gradually decreases. In summary, the aqueous emulsion of anionic acrylate copolymer and the material unit area mass are both key factors affecting the dust removal effect of the double-sided multifunctional maintenance and cleaning non-woven material.

[0083] The raw materials and equipment used in the present invention, unless otherwise specified, are all commonly used raw materials and equipment in the art; the methods used in the present invention, unless otherwise specified, are all conventional methods in the art.

[0084] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A method for preparing a double-sided maintenance and cleaning nonwoven material, characterized in that: The steps include: (1) After the polyester fibers are opened, they are combed into a web by a carding machine and then pre-reinforced by a hydroentanglement process; (2) Lay the PP mesh cloth on the upper end of the polyester fiber through an unwinding machine; (3) Lay the PP spunbond fabric on the top of the PP mesh fabric through an unwinding machine; (4) After the fine denier viscose fiber is combed into a web by a carding machine, it is hydroentangled and dehydrated offline, and then laid on the upper end of the PP spunbond fabric by an unwinding machine; (5) Compounding and reinforcing the above four-layer fiber web structure through a hydroentanglement process to form a composite fiber layer; (6) spraying the aqueous emulsion of the anionic acrylic copolymer uniformly onto the surface of the polyester fibers in the composite fiber layer through a spraying device, and then performing hot air drying; (7) spraying anhydrous curing essential oil of ethoxylated straight-chain alcohol and white mineral oil uniformly onto the surface of the fine-denier viscose fiber of the composite fiber layer through a spraying device; (8) Finally, the nonwoven material is obtained.

2. The preparation method according to claim 1, characterized in that: In the non-woven material finally obtained, the PP mesh cloth and the PP spunbond cloth can be torn apart; and a plurality of cavities are formed on one side where the polyester fibers are located after the hydroentanglement jacquard process.

3. The preparation method according to any one of claims 1-2, characterized in that: The glass transition temperature of the aqueous emulsion of the anionic acrylic ester copolymer is -55°C, and the mass of the aqueous emulsion of the anionic acrylic ester copolymer accounts for 8% to 16% of the total mass of the polyester fiber.

4. The preparation method according to any one of claims 1-2, characterized in that: The total weight of the anhydrous curing essential oil of the ethoxylated straight-chain alcohol and white mineral oil accounts for 30%-50% of the weight of the fine-denier viscose fiber.

5. The preparation method according to any one of claims 1-2, characterized in that: The total mass of the polyester fiber and the aqueous emulsion of the anionic acrylate copolymer accounts for 45% to 65% of the total mass of the non-woven material; the mass of the PP mesh cloth accounts for 4% to 8% of the total mass of the non-woven material; the mass of the PP spunbond cloth accounts for 7% to 15% of the total mass of the non-woven material; the remainder is the fine denier viscose fiber and the anhydrous curing essential oil of the ethoxylated straight-chain alcohol and white mineral oil.

6. The preparation method according to any one of claims 1-2, characterized in that: The specification of the PP mesh cloth is 5-6g / ㎡; the specification of the PP spunbond cloth is 11-13g / ㎡.

7. The preparation method according to any one of claims 1-2, characterized in that: The polyester fiber has a fineness of 2.5 dtex-8 dtex and a length of 25 mm-50 mm; the fineness of the fine denier viscose fiber is 0.3-1.5 dtex.

8. The preparation method according to any one of claims 1-2, characterized in that: In step (1), the hydroentanglement pressure is set to 20 kg; in step (4), the off-line hydroentanglement pressure is set to 35 kg.

9. The preparation method according to any one of claims 1-2, characterized in that: In step (5), the hydroentanglement process performs trapezoidal hydroentanglement jacquard on the polyester fiber surface; the hydroentanglement pressure is 35kg, 40kg, 40kg, 40kg in the processing order.

10. The preparation method according to any one of claims 1-2, characterized in that: The nonwoven material has a unit area mass of 70 g / m 2 -150g / m 2 .

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