A type of fast-absorbing sanitary napkin

By using a water-locking layer made of super-absorbent polymer material and a skin-friendly absorbent layer made of super absorbent polymer material in the sanitary napkin, combined with radial diversion channels and easy-tear components, the problems of leakage prevention and adaptability of existing sanitary napkins are solved, achieving better leakage prevention performance and user experience.

CN224572908UActive Publication Date: 2026-07-31ZHEJIANG SHUXIAO NURSING PRODUCTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG SHUXIAO NURSING PRODUCTS CO LTD
Filing Date
2025-05-08
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing sanitary napkins are inadequate in preventing liquid leakage, especially for women with narrow hips, and menstrual fluid tends to accumulate in the middle, leading to seepage and leakage. They cannot meet the needs of women of different heights and hip widths.

Method used

A fast-absorbing sanitary napkin has been designed, which uses a water-locking layer of super-absorbent polymer material and a skin-friendly water-absorbing layer of super absorbent polymer resin material. Combined with radial diversion channels and easy-tear components, it can achieve rapid and uniform liquid diversion and prevent backflow, and is designed to fit different hip widths.

Benefits of technology

It improves the leak-proof performance of sanitary napkins, reduces central seepage and external leakage, enhances the user experience, adapts to the different hip widths of women, and ensures that liquid does not easily seep downwards.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a fast-absorbing sanitary napkin, belonging to the field of sanitary napkin technology. It includes an outer layer with a concave surface inside. A water-locking layer is formed on the inner wall of the concave surface, and the water-locking layer has radially arranged guide channels. A skin-friendly absorbent layer is adhered to the side of the water-locking layer away from the concave surface. The water-locking layer is made of a super-absorbent polymer material. The beneficial effects of this utility model are that when liquid comes into contact with the skin-friendly absorbent layer, it can quickly penetrate into the water-locking layer through the microporous structure of the skin-friendly absorbent layer. The guide channels on the water-locking layer evenly guide the liquid to various positions within the water-locking layer, thereby reducing the adsorption pressure in the middle of the water-locking layer and preventing liquid from penetrating into the middle. Furthermore, the application of the super-absorbent polymer material in the water-locking layer provides strong water-locking ability and good anti-backflow performance, further preventing liquid from continuing to penetrate downwards, thus ensuring that liquid does not leak.
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Description

Technical Field

[0001] This utility model relates to the field of sanitary napkin technology, and in particular to a fast-absorbing sanitary napkin. Background Technology

[0002] Sanitary napkins are one of the most common hygiene products in women's daily lives. With the development of the times, consumers' attitudes toward the use of sanitary napkins are also constantly changing. In addition to requiring sanitary napkins to meet the basic functions of comfortable use and good absorbency, the requirements for the leak-proof performance of sanitary napkins are getting higher and higher.

[0003] Currently, to prevent side leakage, sanitary napkin manufacturers typically lengthen the sides of the napkin to increase the contact area with the skin. However, due to differences in height and hip width among women, lengthening the sides of the sanitary napkin can be uncomfortable for women with narrower hips. Furthermore, during menstruation, fluid tends to accumulate in the middle of the sanitary napkin. Since the thickness of each layer inside the napkin is mostly the same, the middle absorbs more fluid while the sides absorb less. This can lead to leakage in the middle if menstruation is heavy. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide a fast-absorbing sanitary napkin.

[0005] The technical solution of this utility model is as follows: a fast-absorbing sanitary napkin includes an outer layer, the inner surface of which is provided with a concave surface, the inner wall of which is provided with a water-locking layer, the inner surface of which is provided with a guide groove, the guide groove being radial, and a skin-friendly absorbent layer being adhered to the side of the water-locking layer away from the concave surface. The water-locking layer is made of a super-absorbent polymer material, and the skin-friendly absorbent layer is made of a high-molecular-weight absorbent resin material.

[0006] By adopting the above technical solution, the microporous structure of the skin-friendly absorbent layer can quickly penetrate into the water-locking layer, and the guide grooves on the water-locking layer will evenly guide the liquid to various positions within the water-locking layer, thereby reducing the adsorption pressure in the middle of the water-locking layer and making it less likely for the liquid to penetrate into the middle.

[0007] In a preferred embodiment, the outer layer is provided with easy-tear components on both sides, the easy-tear components including two fixing straps fixedly connected to both sides of the outer layer, and two side leak-proof sheets fixedly connected to both sides of the outer layer.

[0008] By adopting the above technical solution, by tearing off the corresponding leak-proof strip, the width of the remaining leak-proof sheet can be made suitable for use, thereby enabling the sanitary napkin to fit the area of ​​use.

[0009] In a preferred embodiment, the easy-tear assembly further includes an easy-tear strip disposed between the two leak-proof strips, and the side leak-proof sheet is composed of multiple leak-proof strips.

[0010] By adopting the above technical solution and setting an easy-tear strip, users can easily cut the product.

[0011] In a preferred embodiment, both sides of the outer layer are fixedly connected to a fixing component, the fixing component including an adhesive tape fixedly connected to both sides of the outer layer, and release paper is adhered to the top of each adhesive tape.

[0012] By adopting the above technical solution and using the adhesive tape, users can easily attach and fix the sanitary napkin.

[0013] In a preferred embodiment, a strong adhesive strip is glued to one end of the outer side of each fixing strip, and a release sheet is glued to the outer side of each strong adhesive strip.

[0014] By adopting the above technical solution and setting the release sheet, external dust can be prevented from sticking to the strong adhesive strip, thereby protecting the adhesiveness of the strong adhesive strip.

[0015] In a preferred embodiment, each of the leak-proof strips has a through hole inside for use with a fixing strap.

[0016] By adopting the above technical solution, the through hole is designed to facilitate the removal of the leak-proof strip.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the microporous structure of the skin-friendly absorbent layer allows for rapid penetration into the water-locking layer, while the guide grooves on the water-locking layer evenly guide the liquid to various locations within the water-locking layer. This reduces the adsorption pressure in the middle of the water-locking layer, making it less prone to liquid penetration in the middle. Furthermore, the application of the super-absorbent polymer material water-locking layer provides strong water-locking ability and good anti-backflow performance, further preventing the liquid from continuing to penetrate downwards, thus ensuring that the liquid will not leak.

[0018] 2. In this utility model, when women with different hip widths use it, they can tear off the corresponding leak-proof strip according to their own hip width, so that the width of the remaining side leak-proof sheet can be suitable for their use, thereby allowing the sanitary napkin to fit the area where it is used, thus improving the wearer's user experience. Attached Figure Description

[0019] Figure 1 This utility model provides an overall perspective view of a fast-absorbing sanitary napkin; Figure 2An exploded view of a quick-absorbing sanitary napkin provided by this utility model; Figure 3 This utility model provides a schematic diagram of the leak-proof strip structure of a quick-absorbing sanitary napkin; Figure 4 This utility model provides a fast-absorbing sanitary napkin. Figure 2 Enlarged view of point A in the middle.

[0020] Illustration: 1. Outer layer; 2. Side leak-proof sheet; 3. Leak-proof strip; 4. Fixing strap; 5. Strong adhesive strip; 6. Skin-friendly absorbent layer; 7. Water-locking layer; 8. Drainage channel; 9. Concave surface; 10. Adhesive tape; 11. Release paper; 12. Easy-tear strip. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] Reference Figure 1-4 A quick-absorbing sanitary napkin includes an outer layer 1, with a concave surface 9 on the inside of the outer layer 1. A water-locking layer 7 is provided on the inner wall of the concave surface 9, and a radially arranged guide channel 8 is formed inside the water-locking layer 7. A skin-friendly absorbent layer 6 is adhered to the side of the water-locking layer 7 away from the concave surface 9. The water-locking layer 7 is made of a super-absorbent polymer material, and the skin-friendly absorbent layer 6 is made of a high-molecular-weight absorbent resin material. When liquid comes into contact with the skin-friendly absorbent layer 6, it can quickly penetrate into the water-locking layer 7 through the microporous structure of the skin-friendly absorbent layer 6. The guide channel 8 on the water-locking layer 7 will evenly guide the liquid to various positions within the water-locking layer 7, thereby reducing the adsorption pressure in the middle of the water-locking layer 7 and preventing liquid from penetrating into the middle. The application of the super-absorbent polymer material water-locking layer 7 provides strong water-locking ability and good anti-backflow performance, further preventing liquid from continuing to penetrate downwards, thus ensuring that liquid does not leak.

[0023] Specifically, the outer layer 1 has easy-tear components on both sides. The easy-tear components include two fixing straps 4 fixedly connected to both sides of the outer layer 1. When women with different hip widths use the product, they can tear off the corresponding leak-proof strip 3 according to their hip width, so that the width of the remaining side leak-proof sheet 2 can be suitable for their use. This allows the sanitary napkin to fit the area where it is used, thereby improving the user experience. Two side leak-proof sheets 2 are fixedly connected to both sides of the outer layer 1. The easy-tear components also include an easy-tear strip 12 set between the two leak-proof strips 3. The side leak-proof sheet 2 is composed of multiple leak-proof strips 3. Fixing components are fixedly connected to both sides of the outer layer 1. The fixing components include adhesive tapes 10 fixedly connected to both sides of the outer layer 1. Release paper 11 is glued to the top of each adhesive tape 10. The adhesive tapes 10 make it easy for users to glue and fix the sanitary napkin, thereby reducing the displacement of the sanitary napkin during use.

[0024] Specifically, a strong adhesive strip 5 is glued to one end of the outer side of the fixing strip 4, and a release sheet is glued to the outer side of the strong adhesive strip 5. The release sheet prevents external dust from sticking to the strong adhesive strip 5, thereby protecting the adhesiveness of the strong adhesive strip 5. The inside of the leak-proof strip 3 is provided with through holes that cooperate with the fixing strip 4 for removal.

[0025] Working principle: First, when women with different hip widths use this product, they can tear off the corresponding leak-proof strip 3 according to their hip width, so that the width of the remaining leak-proof sheet 2 can be suitable for their use. This allows the sanitary napkin to fit the area where it is used, thereby improving the wearer's experience. When liquid comes into contact with the skin-friendly absorbent layer 6, it can quickly penetrate into the water-locking layer 7 through the microporous structure of the skin-friendly absorbent layer 6. The guide grooves 8 on the water-locking layer 7 will evenly guide the liquid to various positions within the water-locking layer 7, thereby reducing the adsorption pressure in the middle of the water-locking layer 7 and preventing liquid from seeping into the middle. The application of super absorbent polymer material water-locking layer 7 has strong water-locking ability and good anti-backflow performance, which can further prevent liquid from continuing to seep downwards, thus ensuring that liquid will not leak out. The adhesive tape 10 allows the user to easily stick and fix the sanitary napkin, reducing the displacement of the sanitary napkin during use.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rapid-absorbent sanitary napkin comprising an outer layer (1), characterized in that: The outer layer (1) has a concave surface (9) inside, and a water-locking layer (7) is provided on the inner wall of the concave surface (9). A flow guide groove (8) is provided inside the water-locking layer (7). The flow guide groove (8) is radial. A skin-friendly absorbent layer (6) is bonded to the side of the water-locking layer (7) away from the concave surface (9). The water-locking layer (7) is made of super-absorbent polymer material, and the skin-friendly absorbent layer (6) is made of high molecular weight water-absorbing resin material.

2. The rapid-absorbent sanitary napkin of Claim 1 wherein: The outer layer (1) is provided with easy-tear components on both sides. The easy-tear components include two fixing straps (4) fixedly connected to both sides of the outer layer (1). Two side leak-proof sheets (2) are fixedly connected to both sides of the outer layer (1).

3. A rapid absorbing sanitary napkin according to claim 2, wherein: The easy-tear assembly also includes an easy-tear strip (12) disposed between the two leak-proof strips (3), and the side leak-proof sheet (2) is composed of multiple leak-proof strips (3).

4. The rapid absorbing sanitary napkin of claim 1 wherein: Both sides of the outer layer (1) are fixedly connected to a fixing component, the fixing component including an adhesive tape (10) fixedly connected to both sides of the outer layer (1), and a release paper (11) is glued to the top of the adhesive tape (10).

5. The rapid absorbing sanitary napkin of claim 2 wherein: One end of the outer side of the fixing strip (4) is bonded with a strong adhesive strip (5), and a release sheet is bonded to the outer side of the strong adhesive strip (5).

6. The rapid absorbing sanitary napkin of claim 3 wherein: The interior of each leak-proof strip (3) is provided with through holes that cooperate with the fixing strap (4).