Sanitary towel capable of removing odor

Abstract

The utility model relates to the field of hygienic products, provides a sanitary towel capable of removing odor, and solves the problems that the existing sanitary towel cannot have the advantages of strong odor removal capability, continuous antibiosis, better liquid absorption performance and lower cost at the same time. Comprising a sanitary towel body, the sanitary towel body comprises a skin-friendly surface layer, a flow guide layer, an absorber and a leakage-proof bottom layer which are sequentially stacked from top to bottom, and the absorber is formed by sequentially stacking a first absorber, a starch-based fiber membrane layer, a middle convex absorber, a wrapping layer and a second absorber from top to bottom; a plurality of large meshes are formed in the upper surface of the skin-friendly surface layer, the large meshes are arranged in a regular triangle shape, and the wrapping layer is an e-shaped folded wrapping starch-based fiber membrane layer and a middle convex absorber.

Description

Technical Field

[0001] The utility model relates to the field of sanitary products, in particular to a deodorizing sanitary napkin. Background Art

[0002] Sanitary napkins were originally designed to address the unique needs of women during their menstrual period, helping them stay clean, dry, and confident. With the rapid development of modern technology and the continuous improvement of quality of life, female consumers' demands for sanitary napkins are no longer limited to basic absorbency and leak prevention functions. Instead, they are placing greater emphasis on health, comfort, environmental protection, and care.

[0003] Chinese patent application No. 202420239497.1 discloses a plant antibacterial sanitary product, an antibacterial non-woven fabric made of antibacterial fibers, wherein the antibacterial fibers include a core, a mixed portion, and a skin portion. The core portion includes fibers, the mixed portion includes a mixed infiltration layer composed of fibers and an antibacterial mixed solution membrane, and the skin portion includes an antibacterial mixed solution membrane. This solution obtains antibacterial fibers by first infiltrating and absorbing the antibacterial mixed solution into the interior of the fibers and forming an antibacterial mixed solution membrane on the fiber surface. The antibacterial fibers are then used to prepare thornless antibacterial non-woven fabrics, effectively improving the adhesion stability of the antibacterial mixed solution on the fiber surface, thereby effectively preventing it from floating on the surface of the non-woven fabric and being washed away, displaced, or lost, effectively ensuring that the plant antibacterial components continue to exert their antibacterial effects and improving the overall antibacterial effect of sanitary products. However, this sanitary napkin does not have the function of removing odors.

[0004] Chinese patent application No. 202321231971.8 discloses a deodorizing sanitary napkin, comprising a leakproof bottom layer and side wings arranged on the leakproof bottom layer, an adsorption layer is arranged on the top of the leakproof bottom layer, the adsorption layer includes a water-absorbing layer, the interior of the water-absorbing layer is provided with cedar alcohol crystal particles, and the upper surface of the water-absorbing layer is provided with an antibacterial deodorizing layer. When the utility model is in use, the activated carbon fiber layer has a good adsorption effect and reduces the odor of menstrual blood. The tea polyphenols and paclitaxel components on the bamboo fiber layer have both antibacterial effects and can purify the odor of menstrual blood. At the same time, the cedar alcohol crystal particles also have a certain disinfection and sterilization effect, which can reduce the breeding of a large number of bacteria. The cedar alcohol crystal particles also have a certain fragrance and can cover up the odor. However, the antibacterial deodorizing layer of the sanitary napkin includes an activated carbon fiber layer, the upper surface of the activated carbon fiber layer is provided with a bamboo fiber layer, and the activated carbon fiber layer is provided with green tea powder and silver powder, which has a high production cost. Utility Model Content

[0005] Therefore, in order to solve the above problems, the present invention provides a deodorizing sanitary napkin to solve the problem that existing sanitary napkins cannot have strong odor removal ability, continuous antibacterial properties, good liquid absorption performance and low cost.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A deodorizing sanitary napkin comprises a sanitary napkin body, wherein the sanitary napkin body comprises a skin-friendly surface layer, a guide layer, an absorbent body and a leak-proof bottom layer stacked in sequence from top to bottom; the absorbent body comprises a first absorbent body, a starch-based fiber film layer, a central convex absorbent body, a wrapping layer and a second absorbent body stacked in sequence from top to bottom; the starch-based fiber film layer contains tea polyphenols; a plurality of large mesh holes are provided on the upper surface of the skin-friendly surface layer, and the large mesh holes are arranged in an equilateral triangle; the wrapping layer is an E-shaped folded layer that wraps the starch-based fiber film layer and the central convex absorbent body.

[0008] Furthermore, the starch-based fiber membrane layer contains tea polyphenols.

[0009] Furthermore, the large mesh is circular, with a pore diameter of 3-4 mm and a pore spacing of 0.5-2 mm.

[0010] Furthermore, the surface of the skin-friendly surface layer is provided with penetration holes that penetrate the absorbent body.

[0011] Furthermore, a plurality of micropores are provided on the surface of the leak-proof bottom layer, and the diameter of the micropores is less than 0.4 nm.

[0012] Furthermore, the material of the wrapping layer is the same as that of the central convex absorber.

[0013] Furthermore, the first absorbent body and the second absorbent body are any one of hydrophilic non-woven fabric, absorbent paper, dust-free paper, and toilet paper.

[0014] Furthermore, the infiltration hole is funnel-shaped.

[0015] Furthermore, the diameter of the permeable holes located on the skin-friendly surface layer is 1-2.5 mm, and the diameter of the permeable holes located on the bottom surface of the absorbent body is 0.5-1 mm.

[0016] By adopting the above technical solution, the beneficial effects of the utility model are:

[0017] 1. The starch-based fiber film layer can physically absorb odorous substances in menstrual blood, effectively reducing odor. Starch is cheap and widely available, which can effectively reduce the cost of odor-removing sanitary napkins.

[0018] 2. Since menstrual blood droplets are approximately spherical, when they contact the skin-friendly surface layer, they will spread outward along the edges of the large mesh holes, achieving lateral diversion of the menstrual blood. The large mesh holes are arranged in an equilateral triangle, which can maximize the density of the mesh holes and thus increase the penetration rate of the menstrual blood droplets. The surface of the skin-friendly surface layer is provided with permeable holes that penetrate the absorbent body, which can achieve longitudinal diversion of the menstrual blood.

[0019] 3. The starch-based fiber membrane layer contains tea polyphenols, a type of plant antibacterial ingredient with good antibacterial and antioxidant properties. Tea polyphenols are fixed to the fiber surface of the starch-based fiber membrane layer through electrospinning technology to obtain antibacterial starch-based fibers, thereby improving their adhesion stability. As a result, the starch-based fiber membrane layer has the characteristics of slow release and continuous antibacterial.

[0020] 4. The starch-based fiber membrane layer is easily soluble in water, so the starch-based fiber membrane layer is soaked in citric acid. Citric acid contains one hydroxyl group and three carboxyl groups, which can undergo an esterification reaction with the starch-based fiber membrane layer to form a hydrophobic structure on the surface of the starch-based fiber membrane layer, thereby improving the stability of the starch-based fiber membrane layer; at the same time, the fiber diameter of the starch-based fiber membrane layer soaked in citric acid increases and the membrane porosity decreases, making it more difficult for blood droplets to penetrate, thereby improving the leakage prevention effect;

[0021] 5. The starch-based fiber membrane layer and the central convex absorbent are wrapped in an E-type folding, so that the starch-based fiber membrane layer is more stable after absorbing liquid; at the same time, the absorbent forms a five-layer structure with better liquid absorption performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top view of a sanitary napkin in an embodiment of the present utility model;

[0023] Figure 2 This is a schematic structural diagram of a sanitary napkin in an embodiment of the present utility model;

[0024] Explanation of the numbers in the figure: 1-skin-friendly surface layer, 2-guiding layer, 3-absorbent body, 4-leakage-proof bottom layer, 31-first absorbent body, 32-middle convex absorbent body, 33-starch-based fiber membrane layer, 34-wrapping layer, 35-second absorbent body, 11-large mesh, 12-permeable hole. DETAILED DESCRIPTION

[0025] The embodiments of the present utility model are:

[0026] refer to Figures 1 to 2A deodorizing sanitary napkin includes a sanitary napkin body, which includes a skin-friendly surface layer 1, a guide layer 2, an absorbent body 3, and a leak-proof bottom layer 4 stacked in sequence from top to bottom. The absorbent body 3 is stacked in sequence from top to bottom by a first absorbent body 31, a central convex absorbent body 32, a starch-based fiber film layer 33, a wrapping layer 34, and a second absorbent body 35. The starch-based fiber film layer 33 contains tea polyphenols. The central convex absorbent body 32 is made of a mixture of fluff pulp and a high-molecular absorbent resin. The wrapping layer 34 is an e-shaped folded starch-based fiber film layer 33 and the central convex absorbent body 32. The starch-based fiber film layer 33 is made of electrospinning technology. The starch-based fiber membrane layer 33 is prepared and treated with citric acid immersion. The surface of the skin-friendly surface layer 1 is provided with a penetration hole 12 that penetrates the absorbent body. The penetration hole 12 is funnel-shaped. The diameter of the penetration hole located on the surface of the skin-friendly surface layer 1 is 2.5 mm, and the aperture of the penetration hole located on the bottom surface of the absorbent body is 1 mm. The surface of the leak-proof bottom layer 4 is provided with a plurality of micropores, and the diameter of the micropores is 0.3 nm. The material of the wrapping layer 34 is the same as that of the central convex absorbent body 32. The first absorbent body 31 and the second absorbent body 35 are hydrophilic non-woven fabrics. The upper surface of the skin-friendly surface layer 1 is provided with a plurality of large meshes 11, and the large meshes 11 are arranged in a regular triangle.

[0027] Among them, the preparation method of the starch-based fiber membrane layer is: using commercially available well-known octenylsuccinic anhydride modified starch (OS) and pullulan (PUL) as raw materials, according to the mass ratio of OS and PUL of 1:1, using deionized water to prepare a 15% PUL-15% OS (w / v) dispersion solution, continuously heating and stirring in a boiling water bath for 1-2 hours until completely dissolved, cooling to room temperature to obtain an electrospinning solution, and the above-mentioned electrospinning solution is loaded into the syringe of the electrospinning device, the spinning distance is 10 cm, the flow rate of the electrospinning solution is 0.2 mL / h, the drum speed is 5 rpm, and the voltage is 15 kV to obtain the starch-based fiber membrane layer.

[0028] The starch-based fiber membrane layer is immersed in citric acid as follows: the starch-based fiber membrane layer is immersed in a 30% citric acid solution (the solvent is anhydrous ethanol) at 65° C. for 1 hour, then washed with anhydrous ethanol and dried.

[0029] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. A deodorizing sanitary napkin, comprising a sanitary napkin body, characterized in that: The sanitary napkin body includes a skin-friendly surface layer, a guide layer, an absorbent body and a leak-proof bottom layer stacked in sequence from top to bottom. The absorbent body is composed of a first absorbent body, a starch-based fiber film layer, a central convex absorbent body, a wrapping layer and a second absorbent body stacked in sequence from top to bottom. A plurality of large mesh holes are provided on the upper surface of the skin-friendly surface layer, and the large mesh holes are arranged in an equilateral triangle. The wrapping layer is an E-shaped folded layer that wraps the starch-based fiber film layer and the central convex absorbent body.

2. A deodorizing sanitary napkin according to claim 1, characterized in that: The large mesh is circular, has a pore diameter of 3-4 mm, and a pore spacing of 0.5-2 mm.

3. The deodorizing sanitary napkin according to claim 1, characterized in that: The surface of the skin-friendly surface layer is provided with permeable holes that penetrate the absorbent body.

4. The deodorizing sanitary napkin according to claim 1, characterized in that: The surface of the leak-proof bottom layer is provided with a plurality of micropores, and the diameter of the micropores is less than 0.4 nm.

5. The deodorizing sanitary napkin according to claim 1, characterized in that: The material of the wrapping layer is the same as that of the central convex absorber.

6. The deodorizing sanitary napkin according to claim 1, characterized in that: The first absorbent body and the second absorbent body are any one of hydrophilic non-woven fabric, absorbent paper, dust-free paper, and toilet paper.

7. The deodorizing sanitary napkin according to claim 3, characterized in that: The infiltration hole is funnel-shaped.

8. The deodorizing sanitary napkin according to claim 3, characterized in that: The diameter of the penetration holes located on the surface of the skin-friendly surface layer is 1-2.5 mm, and the diameter of the penetration holes located on the bottom surface of the absorbent body is 0.5-1 mm.

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