Sandwich liquid sanitary towel
By using a sandwich structure design and Velcro adjustment structure, the problem of delayed absorption in sanitary napkins during heavy periods is solved, achieving rapid absorption and fixation to ensure the user stays dry and safe.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-03-13
AI Technical Summary
Existing sanitary napkins have poor absorbency when menstrual flow is heavy, causing liquid to remain on the surface, increasing the risk of leakage, reducing the dryness experience, and increasing the probability of bacterial growth, which affects health.
It adopts a sandwich structure design, including a surface non-woven fabric, air cotton, diversion cloth and absorbent paper. The air cotton has diversion channels and seepage holes, and with the Velcro and elastic band adjustment structure, it can ensure rapid absorption and fixation.
It achieves rapid absorption during heavy periods, keeping you dry, reducing the risk of leakage and bacterial growth, adapting to different underwear sizes, and improving comfort and safety.
Smart Images

Figure CN223987980U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sanitary napkin technology, and particularly relates to sandwich liquid sanitary napkins. Background Technology
[0002] Sandwich liquid sanitary napkins are a type of improved sanitary napkin with a multi-layer structure design. Its core feature is "interlayered absorbent core". Specifically, the middle layer of the sandwich liquid sanitary napkin is a high-efficiency absorbent core, with fast-flow diversion layers and anti-leakage edges sandwiched on both sides, forming a "sandwich"-like structure.
[0003] In practical applications, existing technologies show that when sanitary napkins are used during periods of heavy menstrual flow, their absorbency may exhibit a certain lag, causing liquid to remain on the surface and increasing the risk of leakage. The longer absorption time not only reduces the user's dryness experience but may also significantly increase the probability of bacterial growth due to the continuous presence of a localized moist environment, posing a potential threat to the user's health.
[0004] Based on this, the present invention designs a sandwich-style liquid sanitary napkin to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to address the problem that in the existing technology, when sanitary napkins are used and encounter heavy menstrual flow, the absorption performance may exhibit a certain lag, causing liquid to remain on the surface, thereby increasing the risk of leakage. The long absorption time not only reduces the user's dryness experience, but may also significantly increase the probability of bacterial growth due to the continuous presence of a local moist environment, posing a potential threat to the user's health. Therefore, the invention proposes a sandwich liquid sanitary napkin.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A sandwich-style liquid sanitary napkin includes an adhesive backing, a surface non-woven fabric fixedly connected to the upper surface of the adhesive backing, an absorbent structure for instant liquid absorption fixedly connected under the surface non-woven fabric, a diversion fabric fixedly connected under the absorbent structure, absorbent paper fixedly connected under the diversion fabric, a waterproof bottom film fixedly connected under the absorbent paper, the waterproof bottom film fixedly connected inside the adhesive backing, a fixing structure for fixing it to the outside of underwear fixedly connected inside the adhesive backing, and an adjustment structure for adapting to different sizes of underwear fixedly connected below the fixing structure.
[0008] As a further description of the above technical solution:
[0009] The absorption structure includes an air-filled cotton, which is fixedly connected to the surface non-woven fabric. The air-filled cotton has several drainage channels and several water-permeable holes.
[0010] As a further description of the above technical solution:
[0011] The guide channel is shaped like an arrow to facilitate the guidance of liquid.
[0012] As a further description of the above technical solution:
[0013] The centers of several of the seepage holes are located at the same central point, forming a concentric circle arrangement.
[0014] As a further description of the above technical solution:
[0015] The fixing structure includes a connecting flexible plate, which is fixedly connected inside the adhesive backing cloth. An elastic band is inserted inside the connecting flexible plate. A first hook and loop fastener is fixedly connected to one side of the elastic band. A second hook and loop fastener is adhered to the first hook and loop fastener and is fixedly connected under the adhesive backing cloth.
[0016] As a further description of the above technical solution:
[0017] The upper surface of the first hook and loop fastener is set as a rough surface, and the lower surface of the second hook and loop fastener is set as a hook surface.
[0018] As a further description of the above technical solution:
[0019] The adjustment structure includes a slide groove and a slide plate. The slide groove is formed inside the connecting flexible plate. Several slide plates are evenly distributed under the elastic band. A locking block with a certain elasticity is movably connected under the slide plate.
[0020] As a further description of the above technical solution:
[0021] The card block is slidably connected within the slide groove and is secured to the outside of the connecting flexible plate.
[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0023] 1. In this utility model, when the amount of liquid is large during use, it will enter the air cotton through the surface non-woven fabric. At this time, the air cotton will instantly absorb and seep the liquid through the guide groove and the concentric water seepage holes. The absorbed liquid enters the guide cloth and then enters the absorbent paper, thus effectively solving the problem of sluggish absorption performance when the amount of liquid is large. The instant-absorbing air cotton can quickly absorb liquid, avoid the sticky feeling in the humid environment, ensure that the user stays dry throughout the process, and reduce the occurrence of discomfort.
[0024] 2. In this utility model, before use, the first hook and loop fastener needs to be pulled to the second hook and loop fastener, and then the elastic band is passed through the bottom of the underwear. When the elastic band and the adhesive backing fabric wrap the underwear, the first hook and loop fastener is attached to the second hook and loop fastener. If it is necessary to adapt to different body shapes and underwear, one side of the elastic band needs to be pulled to drive several sliding plates to slide out in the sliding groove. When the locking block moves out of the sliding groove, the elastic locking block is locked outside the connecting soft plate, thereby realizing the reinforcement between the adhesive backing fabric and the underwear and preventing the two from separating. Attached Figure Description
[0025] Figure 1 This is a three-dimensional structural diagram of the sandwich liquid sanitary napkin proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the structure of the sandwich liquid sanitary napkin proposed in this utility model, showing the separation of the air cotton and the diversion cloth.
[0027] Figure 3 This is a three-dimensional structural diagram of the sandwich liquid sanitary napkin fixing structure proposed in this utility model;
[0028] Figure 4 The sandwich liquid sanitary napkin proposed in this utility model Figure 3 Enlarged structural diagram of part A in the middle;
[0029] Legend:
[0030] 1. Adhesive-backed fabric; 2. Surface non-woven fabric; 3. Absorbent structure; 31. Air cotton; 32. Drainage channel; 33. Drainage hole; 4. Drainage cloth; 5. Absorbent paper; 6. Waterproof bottom membrane; 7. Fixing structure; 71. Connecting flexible board; 72. Elastic band; 73. First Velcro; 74. Second Velcro; 8. Adjustment structure; 81. Slide groove; 82. Slide plate; 83. Locking block. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0032] Please see Figures 1-4 ,
[0033] First embodiment:
[0034] This utility model provides a technical solution: a sandwich liquid sanitary napkin, including an adhesive backing 1, a surface non-woven fabric 2 fixedly connected to the upper surface of the adhesive backing 1, an absorbent structure 3 for instant liquid absorption fixedly connected below the surface non-woven fabric 2, a diversion cloth 4 fixedly connected below the absorbent structure 3, absorbent paper 5 fixedly connected below the diversion cloth, a waterproof bottom film 6 fixedly connected below the absorbent paper 5, the waterproof bottom film 6 fixedly connected inside the adhesive backing 1, a fixing structure 7 for fixing to the outside of underwear fixedly connected inside the adhesive backing 1, and an adjustment structure 8 for adapting to underwear of different sizes fixedly connected below the fixing structure 7.
[0035] Specifically, such as Figures 1-2 As shown, the absorption structure 3 includes an air cotton 31, which is fixedly connected to the surface non-woven fabric 2. Several guide grooves 32 and several seepage holes 33 are provided inside the air cotton 31. The shape of the guide grooves 32 is set as an arrow to facilitate the guidance of liquid. The centers of the several seepage holes 33 are located at the same center point, forming a concentric circle arrangement. By setting the guide grooves 32 and the seepage holes 33, the liquid can be absorbed more easily and quickly and seep downwards, keeping the upper part dry.
[0036] During use, when the amount of liquid is large, it will pass through the surface non-woven fabric 2 and enter the air cotton 31. At this time, the air cotton 31 will instantly absorb and seep into the liquid through the guide groove 32 and the concentric water seepage holes 33. The absorbed liquid enters the guide cloth 4 and then enters the absorbent paper 5, thus effectively solving the problem of sluggish absorption performance when the amount of liquid is large. The instant-absorbing air cotton 31 can quickly absorb liquid, avoid the sticky feeling in the humid environment, ensure that the user stays dry throughout the process, and reduce the occurrence of discomfort.
[0037] Second embodiment:
[0038] Specifically, such as Figures 3-4 As shown, the fixing structure 7 includes a connecting flexible plate 71, which is fixedly connected to the adhesive backing fabric 1. An elastic band 72 is inserted into the connecting flexible plate 71, allowing for easy stretching outside the underwear. A first hook and loop fastener 73 is fixedly connected to one side of the elastic band 72, and a second hook and loop fastener 74 is attached to the first hook and loop fastener 73. The second hook and loop fastener 74 is fixedly connected to the adhesive backing fabric 1. The upper surface of the first hook and loop fastener 73 is a textured surface, and the lower surface of the second hook and loop fastener 74 is a hook surface. The adjusting structure 8 includes a sliding groove 81 and a sliding plate 82. The sliding groove 81 is located inside the connecting flexible plate 71. Several sliding plates 82 are evenly distributed under the elastic band 72. A locking block 83 with a certain elasticity is movably connected under the sliding plate 82. The locking block 83 is slidably connected inside the sliding groove 81 and locked outside the connecting flexible plate 71. By setting the locking block 83, it can quickly unfold after moving away from the sliding groove 81 to achieve a fixing effect.
[0039] Before use, the first hook and loop fastener 73 needs to be pulled to the second hook and loop fastener 74. Then, the elastic band 72 is passed through the bottom of the underwear. When the elastic band 72 and the adhesive backing 1 wrap the underwear, the first hook and loop fastener 73 is attached to the second hook and loop fastener 74. If different body shapes and underwear are required, one side of the elastic band 72 needs to be pulled to drive several sliding plates 82 to slide out of the slide groove 81. When the locking block 83 moves out of the slide groove 81, the elastic locking block 83 is locked outside the connecting soft plate 71, thereby reinforcing the adhesive backing 1 and the underwear and preventing them from separating.
[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A sandwich liquid sanitary napkin comprising a back adhesive tape (1), characterized in that, The back adhesive cloth (1) is fixedly connected with a surface non-woven fabric (2), the surface non-woven fabric (2) is fixedly connected with an absorption structure (3) for instant liquid absorption, the absorption structure (3) is fixedly connected with a flow guide cloth (4), the flow guide cloth (4) is fixedly connected with a water absorption paper (5), the water absorption paper (5) is fixedly connected with a waterproof bottom film (6), the waterproof bottom film (6) is fixedly connected in the back adhesive cloth (1), the back adhesive cloth (1) is fixedly connected with a fixing structure (7) for fixing outside the underpants, the fixing structure (7) is fixedly connected with an adjusting structure (8) for adapting to different sizes of underpants.
2. The sandwich liquid sanitary napkin according to claim 1, wherein The absorption structure (3) comprises air cotton (31), the air cotton (31) is fixedly connected below the surface non-woven fabric (2), a plurality of flow guide grooves (32) are formed in the air cotton (31), and a plurality of water penetration holes (33) are formed in the air cotton (31).
3. The sandwich liquid sanitary napkin according to claim 2, wherein The shape of the flow guide groove (32) is arranged in an arrow shape to facilitate guiding liquid.
4. The sandwich liquid sanitary napkin according to claim 2, wherein The centers of the plurality of water penetration holes (33) are located at the same center point, forming a concentric circular arrangement structure.
5. The sandwich liquid sanitary napkin according to claim 1, wherein The fixing structure (7) comprises a connecting soft plate (71), the connecting soft plate (71) is fixedly connected in the back adhesive cloth (1), the elastic band (72) is clamped in the connecting soft plate (71), one side of the elastic band (72) is fixedly connected with a first magic tape (73), the first magic tape (73) is attached with a second magic tape (74), and the second magic tape (74) is fixedly connected below the back adhesive cloth (1).
6. The sandwich liquid sanitary napkin according to claim 5, wherein The upper surface of the first magic tape (73) is arranged as a rough surface, and the lower surface of the second magic tape (74) is arranged as a hook surface.
7. The sandwich liquid sanitary napkin according to claim 5, wherein The adjusting structure (8) comprises a sliding groove (81) and a sliding plate (82), the sliding groove (81) is formed in the connecting soft plate (71), a plurality of sliding plates (82) are uniformly distributed below the elastic band (72), and the sliding plate (82) is movably connected with a clamping block (83) with a certain elasticity.
8. The sandwich liquid sanitary napkin according to claim 7, wherein The clamping block (83) is slidably connected in the sliding groove (81) and clamped outside the connecting soft plate (71).