Absorbent pad

Abstract

To provide a water-absorbing pad that is breathable, gentle to the skin, has high deodorizing and antibacterial properties, and can be biodegraded after use while maintaining a predetermined absorbency, thereby reducing the environmental load. [Solution] The absorbent pad 1 includes an absorbent pad main body 2, which is composed of at least a surface portion 3 that comes into contact with the body, an absorbent portion 4 that is provided on the outside of the surface portion to absorb liquid, and a leak-proof portion that is provided on the outside of the absorbent portion to prevent the liquid from leaking outward. The surface portion is made of a bamboo fiber sheet, the absorbent in the absorbent portion is made of a highly absorbent polymer derived from starch, and the leak-proof portion is made of a biodegradable plastic film.

Description

[Technical Field]

[0001] This invention relates to an absorbent pad that uses bamboo fiber sheets, starch-derived absorbents, and biodegradable plastic films, which has excellent odor resistance, antibacterial properties, and breathability, and also contributes to reducing environmental impact. [Background technology]

[0002] Conventionally, absorbent pads have been used in daily life, such as for sanitary products, diapers for babies and the elderly, and diapers for pets.

[0003] Absorbent pads that add various functions have been developed in the past. For example, an outer garment (shorts) has an engaging portion on an extension, and a pocket is provided in an absorbent body, and the engaging portion of the extension engages with the pocket, allowing the outer garment to be fixed without using anti-slip adhesive, thereby reducing the environmental load, and an absorbent article to be attached thereto is disclosed as prior art (Reference 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-137448. Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned prior art is excellent in that it does not use petroleum, which is generally used as a raw material for anti-slip adhesives and poses a high risk of environmental pollution, and therefore reduces the environmental impact, but it has the problem that it can only be used for shorts with special shapes and cannot be used for shorts with ordinary shapes.In addition, it has the problem that it does not reduce the environmental impact for components other than the fixing part.

[0006] Therefore, in order to solve the above problems, we have devised and provided an absorbent pad that can be used with ordinary shorts, is breathable, gentle on the skin, has strong deodorizing and antibacterial properties, and is biodegradable after use while maintaining a predetermined absorbency, thereby reducing the environmental burden. [Means for solving the problem]

[0007] The absorbent pad according to claim 1 of the present invention comprises at least an absorbent pad body made up of a surface portion that comes into contact with the body, an absorbent portion that is provided on the outside of the surface portion to absorb liquid, and a leak-proof portion that is provided on the outside of the absorbent portion to prevent the liquid from leaking outward from the absorbent portion, and is characterized in that the surface portion is made of a bamboo fiber sheet, the absorbent material of the absorbent portion is a starch-derived polymer absorbent, and the leak-proof portion is made of a biodegradable plastic film.

[0008] By adopting this configuration, the absorbent pad of claim 1 of the present invention has a surface that comes into contact with the body made of a bamboo fiber sheet, and the absorbent material of the absorbent part that absorbs liquid and is provided on the outside of the surface is made of a highly absorbent polymer derived from starch, and the leak-proof part provided on the outside of the absorbent part is made of a biodegradable plastic film.

[0009] Bamboo fiber sheets are made from bamboo fibers, so they feel good on the skin, have antibacterial properties, and can suppress odors. They also have excellent water absorption properties, so they can absorb moisture well. They also have excellent thermal effects, so they are warm. They also suppress static electricity, so they prevent dust and dirt from adhering, making them hygienic. Therefore, they are ideal for surfaces that come into contact with the skin. Furthermore, because they are made from bamboo, they are biodegradable, reducing the burden on the environment.

[0010] In addition, the collection material in the absorption section is a starch-derived biodegradable, highly absorbent polymer, which provides excellent water absorption while also being biodegradable, making it possible to compost it, significantly reducing the burden on the environment.

[0011] In addition, the biodegradable plastic film in the leak-proof section does not leak moisture and is decomposed by microorganisms after use, which helps reduce the burden on the environment.

[0012] The absorbent pad according to claim 2 of the present invention is the absorbent pad according to claim 1, wherein the biodegradable plastic film is polylactic acid or polybutylene succinate. The absorbent pad according to claim 3 of the present invention is the absorbent pad according to claim 1, further comprising wing portions for fixing to the sides of the absorbent pad body. The absorbent pad according to claim 4 of the present invention is the absorbent pad according to claim 1, further comprising adhesive portions for fixing on the outer surfaces of the leak barrier portions. The absorbent pad according to claim 5 of the present invention is the absorbent pad according to claim 3, further comprising adhesive portions for fixing on the outer surfaces of the leak barrier portions and the wing portions. The absorbent pad according to claim 6 of the present invention is the absorbent pad according to claim 5, further comprising adhesive portions for fixing made of a biodegradable adhesive. Furthermore, the absorbent pad according to claim 7 of the present invention is characterized in that in the absorbent pad according to any one of claims 4 to 6, the release paper provided opposite the adhesive portion for fixing is made of a biodegradable plastic film.

[0013] By adopting these structures, the absorbent pad of the present invention uses a biodegradable plastic film made of polylactic acid or polybutylene succinate, which can be decomposed by microorganisms and reduces the environmental impact. Polylactic acid can be decomposed in compost, while polybutylene succinate can be decomposed by marine microorganisms. The absorbent pad of the present invention also has fixing wings and adhesive areas on the outside of the leak-proof section and wings, allowing it to be fixed to shorts with a biodegradable adhesive. Examples of biodegradable adhesives include polylactic acid, biopolymers, cellulose, cornstarch, natural rubber, and rosin. [Effects of the Invention]

[0014] According to the absorbent pads of claims 1 to 7 of the present invention, all components are biodegradable because they are made only from natural raw materials, significantly reducing the environmental impact. They also feel good on the skin, have antibacterial properties, and suppress odors. They also have excellent water absorption properties, so they can absorb moisture effectively. They also have excellent thermal effects, so they are warm. Furthermore, they can suppress static electricity, preventing the adhesion of dust and dirt, making them hygienic. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic perspective view of an absorbent pad according to an embodiment of the present invention. [Figure 2] FIG. 2 is a schematic cross-sectional view showing the configuration of a water-absorbent pad according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] As shown in Figures 1 and 2, the absorbent pad 1 of the present invention is composed of at least an absorbent pad body 2 consisting of a surface section 3, an absorbent section 4, and a leak-proof section 5. Wing sections 6 are provided on the sides of the absorbent pad body 2 for fastening to shorts, and adhesive sections 5-1 for fastening are applied to the outside of the leak-proof section 5 and the wings 6. Release paper 7 is provided to prevent the adhesive section 5-1 for fastening from sticking to unintended objects before use.

[0017] The surface portion 3 is the side of the absorbent pad 1 according to the present invention that comes into contact with the skin. The surface portion 3 is made from a bamboo fiber sheet, which feels pleasant to the touch and is warm due to its excellent thermal effect. It also has antibacterial properties and can suppress odor generation. The bamboo fiber sheet also has excellent water absorption properties, so it can absorb moisture effectively. The bamboo fiber sheet also suppresses static electricity, preventing the adhesion of dust and dirt, making it hygienic. Therefore, the surface portion 3 is the ideal material for the surface portion that comes into contact with the skin. Furthermore, because the surface portion 3 is made from bamboo, it is biodegradable, reducing the burden on the environment.

[0018] The absorbent section 4 is provided on the outside of the surface section 3 and is capable of absorbing and retaining menstrual blood and urine that pass through the surface section 3. It is composed of an internal collection material 4-2 and an absorbent surface material 4-1. The absorbent material 4-2 is a starch-derived biodegradable, highly absorbent polymer, which exhibits excellent water absorption and is able to absorb and retain menstrual blood and urine. Furthermore, since the collection material 4-2 is derived from starch and is biodegradable, it can be composted, significantly reducing the environmental impact. Furthermore, the absorbent surface material 4-1, which is used to wrap the absorbent material 4-2 from the outside, is made of wood-derived pulp, a natural material that is biodegradable and therefore reduces the environmental impact.

[0019] The leak-proof part 5 is provided on the outside of the absorbent part 4 and serves to prevent menstrual blood and urine absorbed by the absorbent part 4 from leaking outside the absorbent pad 1. The leak-proof part 5 is made of a biodegradable plastic film, which can be decomposed by microorganisms after use, thereby helping to reduce environmental impact. Examples of biodegradable plastic films include polylactic acid and polybutylene succinate. The outside of the leak-proof part 5 is provided with a fixing adhesive part 5-1 for attaching and fixing the part to shorts.

[0020] Wing portions 6 are used to secure the diaper to shorts. The surface (skin side) of wing portion 6 is formed integrally with surface portion 3, and the outer surface is formed integrally with leakproof portion 5. The outer surface of the outer surface is provided with adhesive portion 5-1 for attaching and securing the diaper to shorts. Adhesive portion 5-1 is made of a biodegradable adhesive, which allows the diaper to be secured to the shorts. Examples of biodegradable adhesives include polylactic acid, biopolymers, cellulose, cornstarch, natural rubber, and rosin.

[0021] The release paper 7 is used to prevent the adhesive portion 5-1 from adhering to unintended objects before use. The release paper 7 is made of a biodegradable plastic film, which can be decomposed by microorganisms after use, thus helping to reduce environmental impact. Examples of biodegradable plastic films include polylactic acid and polybutylene succinate.

[0022] An example of a method for manufacturing an absorbent pad 1 according to the present invention will now be described. First, an absorbent surface material 4-1 is laid on a surface portion 3 of a predetermined shape, and then an absorbent 2 is placed on top of that and pressed. Next, a leakproof material 6 of a predetermined shape is placed on top of that and adhered. Then, adhesive is applied to the outer surface of the leakproof material 6, and release paper 7 is placed on top and cut to the predetermined shape, completing the absorbent pad 1 according to the present invention.

[0023] Next, an example of how to use the absorbent pad 1 of the present invention will be described with reference to Figures 1 and 2. First, the user peels off the release paper 7 from the absorbent pad 1 of the present invention and attaches it to shorts to secure it in place. The user then puts on the shorts to use the pad. After use, the pad is removed from the shorts and buried in soil or compost to biodegrade. Because all components of the absorbent pad 1 of the present invention are biodegradable, it significantly reduces the environmental impact.

[0024] The absorbent pad 1 of this invention is made entirely from natural materials, so all components are biodegradable, significantly reducing the environmental impact. It also feels pleasant on the skin, has antibacterial properties, and suppresses odors. It also has excellent water absorption, so it can absorb moisture effectively. It also has excellent thermal effects, so it's warm. It also suppresses static electricity, so it prevents dust and dirt from adhering, making it hygienic. [Industrial Applicability]

[0025] It can be widely used in areas that absorb liquids, such as diapers and animal diapers. [Explanation of symbols]

[0026] 1: Absorbent pad 2: Absorbent pad body 3: Surface part 4: Absorption part 4-1: Surface material of water absorption part 4-2: Absorbent 5: Leakage prevention part 5-1: Fixing glue part 6: Blade part 7: Release paper

Claims

1. This absorbent pad is characterized in that the absorbent pad body is composed of at least a surface portion that comes into contact with the body, an absorbent portion that is provided on the outside of the surface portion to absorb liquid, and a leak-proof portion that is provided on the outside of the absorbent portion to prevent the liquid from leaking outward, and the surface portion is made of a bamboo fiber sheet, the absorbent of the absorbent portion is made of a highly absorbent polymer derived from starch, and the leak-proof portion is made of a biodegradable plastic film.

2. 2. The water-absorbent pad according to claim 1, wherein the biodegradable plastic film is polylactic acid or polybutylene succinate.

3. 2. The water-absorbent pad according to claim 1, wherein wings are provided on the sides of the absorbent pad body for fixing the absorbent pad body in place.

4. 2. The water-absorbent pad according to claim 1, wherein a fixing adhesive portion is provided on the outer surface of said leak-proof portion.

5. 4. The water-absorbent pad according to claim 3, wherein adhesive portions for fixing are provided on the outer surfaces of the leak-proof portion and the wing portion.

6. 6. The water-absorbent pad according to claim 5, wherein the adhesive portion for fixing is made of a biodegradable adhesive.

7. 7. The water-absorbent pad according to claim 4, wherein the release paper provided opposite the adhesive portion for fixing is made of a biodegradable plastic film.

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