Rubber cleaning paper and preparation method thereof

Abstract

According to the rubber cleaning paper and the preparation method, the use of a cleaning agent is reduced, and the service life is prolonged. Comprising a base layer, a first rubber layer and a second rubber layer, the base layer is reinforced by dipping rubber resin to form the first rubber layer, the second rubber layer comprises the following components in parts by mass: 50-70 parts of rubber resin and 10-20 parts of acrylic resin, and the rubber layer is formed by spraying a mixed solution on the base layer and drying. The porosity of the base layer ranges from 70% to 80%. Fiber gaps are filled with the rubber layer to form a three-dimensional network, the oil stain adsorption capacity can be improved through the capillary effect between the fibers, the friction coefficient is increased to 0.65 (wet) from 0.3 (dry state) through rubber swelling in the wet state, various fibers wrapping the rubber can exert strong adsorption force and friction force when meeting water without a detergent, and the oil stain adsorption performance is improved. And dirt is removed by utilizing super-strong adsorption force and friction force of rubber.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary ware, and in particular to a rubber cleaning paper and a preparation method thereof. Background Art

[0002] In the field of cleaning, especially in cleaning scenes for highly adhesive pollutants such as oil stains and glue stains, traditional cleaning materials (such as ordinary non-woven fabrics, sponges or fiber cloths) have pain points such as low adsorption efficiency, easy residual debris, and poor reusability. The market is in urgent need of a new type of environmentally friendly cleaning material with high adsorption and no need for chemical detergents. The porosity of traditional non-woven fabric substrates is generally low, resulting in insufficient adsorption capacity for oil stains. In order to improve adsorption, the porosity is increased by chemical foaming, but it will cause the mechanical strength of the material to drop significantly, and it cannot withstand friction and extrusion during wiping. In addition, the high-porosity material foam plastic substrate is prone to causing debris to fall off due to loose fiber structure. Therefore, how to balance the porosity and the strength of the non-woven fabric is a major current problem for this application. Summary of the Invention

[0003] The object of the present invention is to provide a rubber cleaning paper and a preparation method thereof, which can reduce the use of cleaning agents and increase the service life.

[0004] In a first aspect, a rubber cleaning paper is provided, comprising a porous and soft base layer, a first rubber layer, and a second rubber layer. The base layer is reinforced by dipping it in a rubber resin to form a first rubber layer. The second rubber layer comprises, by weight, 50-70 parts of rubber resin and 10-20 parts of acrylic resin. The rubber layer is formed by spraying the mixed liquid on the base layer and drying it.

[0005] As a preferred embodiment of the present invention, the base layer is one of non-woven fabric, sponge, paper, fiber cloth, heat-sealed cotton or cotton cloth.

[0006] Furthermore, the overall porosity of the rubber cleaning paper is between 40% and 50%, and the porosity of the base layer is between 70% and 80%.

[0007] Furthermore, the thickness of the non-base layer is 0.5-3 mm, and the thickness of the second rubber layer is 0.1-0.5 mm.

[0008] Furthermore, the second rubber layer components also include: 2-2.5 parts of rosin resin, 0.5-1 part of mildewproof agent, and 0.1-1 part of antibacterial agent.

[0009] In a second aspect, a method for preparing a rubber cleaning paper is provided, the method comprising:

[0010] S1: Pretreatment: Pretreatment of chemical fiber to form a base layer;

[0011] S2: Dipping: Dipping the roller into the rubber resin, pushing and pulling the roller along the set route to apply the rubber to the base layer, so that the rubber resin penetrates into the pores of the chemical fibers in the base layer to form the first rubber layer;

[0012] S3: Spraying: Spraying the mixed solution onto the surface of the impregnated base layer by spraying, wherein the rubber layer components include, by weight: 50-70 parts of rubber resin, 10-20 parts of acrylic resin, and 50-70 parts of water;

[0013] S4: Drying: Drying the base layer after spraying glue to form a second rubber layer on the surface.

[0014] Furthermore, the rubber layer components also include 2-2.5 parts of rosin resin, 0.5-1 part of mildewproof agent, and 0.1-1 part of antibacterial agent.

[0015] Furthermore, the preprocessing includes:

[0016] Opening: breaking down the compressed chemical fiber bundles into single fibers or fiber bundles and mixing them evenly;

[0017] Combing: The opened chemical fiber is fed into the carding machine for combing, loosening the opened fiber bundles, adjusting the fiber arrangement direction, and converting the loose chemical fiber into a uniform fiber web;

[0018] Hot air setting: The combed fibers are sent into an oven for hot air setting, which stabilizes the fiber structure through thermal action.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the cleaning paper of the present application is made of glue-free cotton material, does not require the addition of additional detergent, and has adsorption capacity for stains. The rubber layer fills the gaps between fibers to form a three-dimensional network, and the capillary action between fibers can improve the ability to adsorb oil stains. The swelling of the rubber in a wet state increases the friction coefficient from 0.3 (dry state) to 0.65 (wet state). The polyester fiber wrapped in rubber can exert strong adsorption and friction forces when it comes into contact with water without detergent, and the super strong adsorption and friction forces of rubber are used to remove dirt. It can effectively remove stains on the inside and outside surfaces of faucets, microwave ovens, gas stoves, sinks, pans, and refrigerators, and has a certain antibacterial and mildew-proof effect on the surface of objects that have been wiped. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is an enlarged schematic diagram of the rubber cleaning paper according to an embodiment of the present application under an electron microscope. DETAILED DESCRIPTION

[0022] The embodiments of the present invention will be described in detail below with reference to the examples, but it will be understood by those skilled in the art that the following examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention. Where specific conditions are not specified in the examples, the methods were performed according to conventional conditions or the conditions recommended by the manufacturer. Where the manufacturers of the reagents or instruments are not specified, they are all commercially available conventional products.

[0023] In this embodiment, non-woven fabric is used as a substrate. The method for preparing the rubber cleaning paper includes the following steps:

[0024] S1: Pretreatment: Pretreatment of chemical fiber to form non-woven fabric. Pretreatment includes:

[0025] Opening: Decomposing compressed chemical fiber bundles into single fibers or fiber bundles and mixing them evenly. The purposes and mechanisms of opening include: 1. Loosening the fibers, breaking down compressed chemical fiber bundles into single fibers or small fiber bundles to improve subsequent combing uniformity; 2. Impurity Removal: Removing hard lumps, doubling, and residual impurities from processing through mechanical force (strikes and tears) and airflow. 3. Fiber Protection: Balancing opening strength with fiber damage rate is crucial. Chemical fibers have high resilience, so excessive impact, which increases the short fiber content, must be avoided.

[0026] Blending ensures that different batches / components of chemical fibers are mixed evenly to avoid color difference or strong fluctuations in the yarn. The fiber layer is disturbed by negative pressure airflow in the cotton box, and the looseness is improved by combining the vibration bucket of the cotton mixer. Combing: The opened chemical fiber is sent to the carding machine for combing to loosen the loosened fiber bundles, further loosen the loosened fiber bundles, reduce the residual fiber blocks, make the fibers close to a single state, remove fine impurities (such as parallel yarns, hard blocks), and remove non-spinnable fibers through the cotton drop system. The fiber arrangement direction is adjusted by the combing element (such as longitudinal direction or cross-laying). The loose fibers are converted into a uniform fiber web (the gram weight range is usually 8-30g / m 2 ).

[0027] Adjusting the porosity of the non-woven fabric through the combing step requires coordinated regulation of fiber arrangement, web density and process parameters.

[0028] Fiber arrangement control: Use low-density card clothing (such as 400 teeth / (25.4mm) 2) to increase the cross-arrangement of fibers, which can increase the porosity. The porosity can also be increased by adjusting the longitudinal (MD) and transverse (CD) fiber ratio of the fiber web to 1:1 through a mechanical cross-lapping machine. With each additional layer of cross-lapping (such as 3 layers → 5 layers), the porosity increases by 5-8%, but the fiber web weight needs to be reduced at the same time.

[0029] Web density control: By controlling the carding machine's cylinder speed and the doffer-cylinder gauge, the web's density can be adjusted vertically and horizontally. At low cylinder speeds (e.g., 300-350 r / min), the web is fluffy. At high speeds (500-600 r / min), the fibers are tightly packed. Fine fibers (≤1.5 denier) have a large specific surface area, resulting in a dense web structure and reduced porosity. Coarse fibers (≥3 denier) increase interfiber spacing and improve porosity. By mixing coarse and fine fibers in a specific ratio, the porosity can be precisely controlled.

[0030] Process synergy: A negative pressure chamber (-500 to -800 Pa) is set under the carding machine, and the fibers settle freely to form three-dimensional pores, which increases the porosity.

[0031] In this embodiment, a 400-tooth low-density card cloth, a cylinder speed of 300 r / min, and three layers of cross-lapping are used, and the porosity can reach 70-80%.

[0032] Hot air setting: The carded fibers are sent into an oven for hot air setting, which stabilizes the fiber structure through thermal action. Hot air setting includes four stages:

[0033] Preheating: After entering the oven, the fiber web is rapidly heated to the set temperature via a hot air circulation system. This stage ensures a gentle temperature gradient to avoid a large temperature difference between the fiber surface and the interior, which could lead to concentrated thermal stress. For example, polyester fiber needs to be heated from room temperature to 180-200°C within 1-2 minutes.

[0034] Thermal equilibrium stage: Once the fiber surface reaches the target temperature, heat energy gradually penetrates into the interior. During this stage, a constant temperature must be maintained. For a 5mm thick polyester web, the thermal equilibrium time is typically 20-40 seconds.

[0035] Molecular structure adjustment stage: At a set temperature (such as 200-220℃ for polyester), the fiber molecular segments are rearranged to eliminate the internal stress generated during the processing.

[0036] Cooling and shaping stage: Rapid cooling through forced cold air or water-cooled rollers to lock in the new fiber structure.

[0037] In addition, the temperature of hot air setting also has a certain influence on the porosity. After low-temperature setting (80-100℃), the fiber web shrinks slightly and the porosity decreases slightly. After high-temperature setting (130-150℃), the fibers soften and bond, and the porosity decreases significantly.

[0038] The thickness of the final non-woven fabric is determined according to the specific usage requirements. When it is a disposable product, its thickness can be controlled at 0.1-0.2mm, and the thickness of the entire product can be controlled at about 0.2mm. When it is a product that is used repeatedly, the thickness of the non-woven fabric can be increased or a base material such as sponge can be used to control the thickness of the sponge to 2-5cm.

[0039] S2: Dipping: Dip the roller into the rubber resin. Immerse the roller in the adhesive pool to a depth of 1 / 3 of its diameter. Then, roll it over a dipping net to remove excess adhesive and ensure even adhesion. Push and pull the roller along an "M" or "W" path, controlling the coating pressure at 0.2-0.5 MPa. This allows the adhesive to penetrate the pores of the nonwoven fibers, and the rubber resin to penetrate the pores of the nonwoven's chemical fibers, forming the first rubber layer. This layer acts as a stabilizer for the nonwoven. Unidirectional rolling in the direction of the pile eliminates bubbles and enhances coating smoothness. Hot air (60-80°C) is used to accelerate adhesive leveling. Alternating dipping with two rollers is recommended: the first dipping roller allows the adhesive to penetrate the fibers, while the second scraping roller removes excess adhesive from the surface, enhancing the overall strength of the nonwoven. The roller size should be selected based on the width of the nonwoven (e.g., a 1m wide nonwoven would require a 150mm diameter roller).

[0040] S3: Spraying glue: The mixed solution is sprayed onto the surface of the impregnated non-woven fabric base layer by spraying, wherein the rubber layer components include, by mass, 50-70 parts of rubber resin, 10-20 parts of acrylic resin, 50-70 parts of water, 2-2.5 parts of rosin resin, 0.5-1 parts of mildew inhibitor, and 0.1-1 parts of antibacterial agent. The rubber resin serves as a film-forming matrix to provide elasticity and wear resistance. Preferably, styrene-butadiene rubber (SBR) or chloroprene rubber (CR) can be used, and its glass transition temperature (Tg) is in the range of -50 to -20°C, which is suitable for wiping requirements in a wide temperature range. After compounding with acrylic resin, the dynamic viscosity is maintained at 200-500mPa·s (25°C), which can ensure the uniformity of spray atomization and the droplet size is ≤50μm. Acrylic resin introduces carboxyl (-COOH) or hydroxyl (-OH) functional groups to enhance hydrogen bonding with non-woven fibers (such as polyester) and improve peeling strength. Water is used as an environmentally friendly diluent. Rosin resin (softening point 85-95℃) forms π-π conjugation with rubber / acrylic resin through terpene structure to improve adhesion to oil stains on metal surfaces (adhesion work increased by 40%). Antifungal agents can use silver-loaded zeolite (particle size 1-3μm) to slowly release Ag. + Achieve long-lasting antibacterial effect (inhibition rate> 99.9%) and avoid VOC release problems caused by migration of organic mildew inhibitors.

[0041] S4: Drying: Dry the non-woven fabric base after spraying glue to form a rubber layer on the surface, and pack the rolled wipes and put them into storage.

[0042] Beneficial effect: The cleaning paper of the present application is made of glue-free cotton material, does not require additional detergent, and has adsorption capacity for stains. The rubber layer fills the gaps between fibers to form a three-dimensional network, and the capillary action between fibers can improve the ability to adsorb oil stains. The rubber swells in a wet state, increasing the friction coefficient from 0.3 (dry state) to 0.65 (wet state). The polyester fiber wrapped in rubber can exert strong adsorption and friction when it comes into contact with water without detergent, and the super strong adsorption and friction of rubber is used to remove dirt. It can effectively remove stains on the inside and outside surfaces of faucets, microwave ovens, gas stoves, sinks, pans, and refrigerators, and has a certain antibacterial and mildew-proof effect on the surface of the wiped objects.

[0043] Directions:

[0044] If the dirt is serious, rub it slowly in the same direction with a little force; if it is stained with heavy oil or cooking oil, put the cleaning towel aside, the oil will float to the surface of the cleaning towel, and then rub it in the same direction; if you encounter stubborn stains, you can rub it with a small amount of soap or detergent; if it is localized dirt, you can cut the cleaning towel into a suitable size for use.

[0045] Suitable for scenes: microwave ovens, gas stoves, shower faucets, bathtub accessories, peeling marks of wallpaper, ventilation fans, and the sides of shoes.

[0046] Based on the same inventive concept, the present application also provides a rubber cleaning paper, such as Figure 1 As shown, it includes a base layer, a first rubber layer, and a second rubber layer. The base layer is reinforced by dipping it in a rubber resin to form the first rubber layer. The second rubber layer comprises, by weight, 50-70 parts rubber resin, 10-20 parts acrylic resin, 2-2.5 parts rosin resin, 0.5-1 part mildew inhibitor, and 0.1-1 part antibacterial agent. The rubber layer is formed by spraying the mixed solution onto the base layer and drying it. The porosity of the base layer is between 70% and 80%, while the overall porosity of the rubber cleaning paper is between 40% and 50%. The thickness and material of the base layer depend on the type of final product. For thin, disposable products, the base layer can be a non-woven fabric with a thickness of 0.5-2 mm, and the thickness of the second rubber layer can be 0.5-2 mm. For products that are intended for repeated use, the thickness of the non-woven fabric can be increased, or a sponge substrate can be used, with the sponge thickness controlled to 2-5 cm.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rubber cleaning paper, characterized in that: The invention comprises a porous and soft base layer, a first rubber layer and a second rubber layer. The base layer is reinforced by dipping the base layer in rubber resin to form the first rubber layer. The second rubber layer comprises, by weight, 50-70 parts of rubber resin and 10-20 parts of acrylic resin. The rubber layer is formed by spraying the mixed liquid on the base layer and drying it.

2. The rubber cleaning paper according to claim 1, characterized in that: The base layer is one of non-woven fabric, sponge, paper, fiber cloth, heat-sealed cotton or cotton cloth.

3. The rubber cleaning paper according to claim 2, characterized in that: The overall porosity of the rubber cleaning paper is between 40% and 50%, and the porosity of the base layer is between 70% and 80%.

4. The rubber cleaning paper according to claim 1, wherein: The thickness of the non-base layer is 0.5-3 mm, and the thickness of the second rubber layer is 0.1-0.5 mm.

5. The rubber cleaning paper according to claim 2, characterized in that: The second rubber layer components also include: 2-2.5 parts of rosin resin, 0.5-1 part of mildewproof agent, and 0.1-1 part of antibacterial agent.

6. A method for preparing rubber cleaning paper, characterized in that: The method comprises: S1: Pretreatment: Pretreatment of chemical fiber to form a base layer; S2: Dipping: Dipping the roller into the rubber resin, pushing and pulling the roller along the set route to apply the rubber to the base layer, so that the rubber resin penetrates into the pores of the chemical fibers in the base layer to form the first rubber layer; S3: Spraying: Spraying the mixed solution onto the surface of the impregnated base layer by spraying, wherein the rubber layer components include, by weight: 50-70 parts of rubber resin, 10-20 parts of acrylic resin, and 50-70 parts of water; S4: Drying: Drying the base layer after spraying glue to form a second rubber layer on the surface.

7. The method for preparing the rubber cleaning paper according to claim 6, wherein: The rubber layer components also include 2-2.5 parts of rosin resin, 0.5-1 part of mildewproof agent, and 0.1-1 part of antibacterial agent.

8. The method for preparing the rubber cleaning paper according to claim 7, wherein: The pretreatment includes: Opening: breaking down the compressed chemical fiber bundles into single fibers or fiber bundles and mixing them evenly; Combing: The opened chemical fiber is fed into the carding machine for combing, loosening the opened fiber bundles, adjusting the fiber arrangement direction, and converting the loose chemical fiber into a uniform fiber web; Hot air setting: The combed fibers are sent into an oven for hot air setting, which stabilizes the fiber structure through thermal action.

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