Low-reverse-osmosis sanitary towel capable of enhancing absorption
Through multi-layer structure design and three-dimensional flow guiding technology, the problem of backflow in sanitary napkins has been solved, achieving higher absorbency and anti-backflow effect, and improving user comfort.
Patent Information
- Application Number
- CN202422812903.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing sanitary napkins are prone to backflow when absorbing large amounts of menstrual blood, resulting in more menstrual blood residue on the surface layer, increasing discomfort and the risk of infection in the private area.
It adopts a multi-layer structure design, including a surface layer, a flow guiding layer, an absorption layer and a bottom membrane. The absorption layer and the reinforcing layer are equipped with grooves and protrusions, which, combined with three-dimensional flow guiding non-woven fabric and super absorbent resin particles, form a three-dimensional containment space, enhance the absorption effect and reduce backflow.
It improves the absorbency and anti-backflow performance of sanitary napkins, keeps the surface dry, reduces menstrual blood backflow, and enhances user comfort.
Smart Images

Figure CN223586151U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sanitary towel technical field especially, it relates to a low anti -permeation sanitary towel of strengthening absorption. BACKGROUND
[0002] Sanitary towel is a kind of sanitary product with absorption capacity for women during menstruation. Sanitary towel can be divided into three layers: surface layer, absorption core and bottom film. The absorption core absorbs menstrual blood, and the bottom film prevents leakage.
[0003] In order to improve the absorption of sanitary towel, the absorption core usually uses wood pulp or fluff pulp with high water absorption performance, and high water absorption resin particles can also be added to further enhance the absorption of menstrual blood. However, wood pulp or fluff pulp cannot lock menstrual blood well, especially when the absorption of menstrual blood is large, it is easy to appear anti-permeation problem, which leads to more residual menstrual blood on the surface layer, increases the risk of discomfort and infection, and needs to be improved. SUMMARY
[0004] The utility model aims at providing a low anti-permeation sanitary towel with enhanced absorption, which improves the absorption effect and anti-permeation performance, and maintains the dryness of the surface layer.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] A low anti-permeation sanitary towel with enhanced absorption includes a surface layer, a flow guide layer, an absorption layer, a reinforcement layer and a bottom film stacked from top to bottom. The top surface of the absorption layer is arrayed with first grooves, and the top surface of the reinforcement layer is arrayed with second grooves. The bottom surface of the absorption layer is concave and has first protrusions below the first grooves, and the bottom surface of the reinforcement layer is concave and has second protrusions below the second grooves. The projection of the absorption layer on the horizontal plane covers the projection of the reinforcement layer on the horizontal plane.
[0007] Wherein, the projections of the first grooves and the second grooves on the horizontal plane are staggered.
[0008] Wherein, the flow guide layer uses a layer of three-dimensional flow guide non-woven fabric.
[0009] Wherein, the first grooves and the second grooves respectively adopt a horn mouth structure or a funnel structure with large upper and small lower.
[0010] Wherein, the surface layer includes a first cotton fiber non-woven fabric layer.
[0011] Wherein, the surface layer further includes a second cotton fiber non-woven fabric layer below the first cotton fiber non-woven fabric layer.
[0012] Wherein, the bottom film includes a layer of waterproof and breathable film.
[0013] The absorbing layer and the reinforcing layer are respectively made of a wood pulp absorbing core.
[0014] The high water absorption resin particles are embedded in the absorbing layer and / or the reinforcing layer.
[0015] The low reverse osmosis sanitary napkin has the advantages that the absorbing layer and the reinforcing layer can quickly absorb the menstrual blood of the surface layer, the absorbing effect is improved, the downward flow of the menstrual blood is conducted by the first groove and the second groove, the performance of preventing reverse osmosis is improved, the surface layer is kept dry, the first protrusion and the second protrusion are used to form a three-dimensional space for containing the menstrual blood between the absorbing layer, the reinforcing layer and the bottom film, the amount of absorbed menstrual blood is further improved, and the problem of reverse osmosis is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a structural schematic view of the utility model;
[0017] Figure 2 is Figure 1 a top view of the reinforcing layer. DETAILED DESCRIPTION
[0018] The technical scheme of the utility model will be further illustrated in combination with specific embodiments. Figures 1-2 As shown in the figure, the low reverse osmosis sanitary napkin for strengthening absorption comprises a surface layer 1, a flow guide layer 2, an absorbing layer 3, a reinforcing layer 4 and a bottom film 5 which are stacked in sequence from top to bottom, the surface layer comprises a first cotton fiber non-woven fabric layer 11 which is made of pure cotton fiber and has soft texture and good skin friendliness.
[0019] Figure 1 In the embodiment, the surface layer further comprises a second cotton fiber non-woven fabric layer 12 which is located below the first cotton fiber non-woven fabric layer 11, the second cotton fiber non-woven fabric layer 12 is also made of pure cotton fiber, the first cotton fiber non-woven fabric layer 11 cooperates with the second cotton fiber non-woven fabric layer 12, the double-layer structure improves the three-dimensional absorbing effect, the sanitary napkin can absorb the menstrual blood faster, and the problem of reverse osmosis is reduced.
[0020] As shown in the figure, the flow guide layer 3 is made of a layer of three-dimensional flow guide non-woven fabric, the three-dimensional flow guide non-woven fabric conducts longitudinal flow and downward seepage of the menstrual blood, quickly guides the menstrual blood of the surface layer 1 into the absorbing layer 3, and is beneficial to keeping the surface layer 1 relatively dry.
[0021] As shown in the figure, the reinforcing layer 4 is made of a layer of three-dimensional reinforcing non-woven fabric, the three-dimensional reinforcing non-woven fabric is used to reinforce the absorbing layer 3 and the bottom film 5, and the menstrual blood is guided downward by the first groove 31 and the second groove 41. Figure 1 The top surface of the absorbing layer 3 is provided with the first groove 31, the downward seepage area is increased by the first groove 31, the rapid flow and downward seepage of the menstrual blood are conducted, and the residence of the menstrual blood on the top surface of the absorbing layer 3 is reduced.
[0022] Figure 2 As shown, the second groove 41 is used for the downward infiltration and storage of the menstrual blood, and the absorption amount of the menstrual blood is increased.
[0023] In the embodiment, the projection of the first groove 31 on the horizontal plane is staggered with the projection of the second groove 41 on the horizontal plane, which is beneficial to reduce the back infiltration problem. The first groove 31 and the second groove 41 are respectively provided with a trumpet-shaped structure or a funnel structure, which is beneficial to the downward infiltration of the menstrual blood and can double inhibit the back infiltration.
[0024] The first protrusion 32 is arranged below the first groove 31 on the bottom surface of the absorption layer 3, and the second protrusion 42 is arranged below the second groove 41 on the bottom surface of the reinforcing layer 4, as shown. Figure 1 As shown, the first protrusion 32 and the second protrusion 42 are used to form a three-dimensional space for containing the menstrual blood between the absorption layer 3, the reinforcing layer 4 and the bottom film 5, which further increases the absorption amount of the menstrual blood and reduces the back infiltration problem.
[0025] In the embodiment, the projection of the absorption layer 3 on the horizontal plane covers the projection of the reinforcing layer 4 on the horizontal plane, and the area of the absorption layer 3 is relatively large. The edge of the absorption layer 3 is glued to the bottom film 5 to realize the wrapping of the edge of the reinforcing layer 4, and the structure is stable.
[0026] As shown, Figure 1 The bottom film 5 includes a waterproof and breathable film, which avoids leakage and ensures the breathability to avoid the hot and humid problem.
[0027] In the embodiment, the absorption layer 3 and the reinforcing layer 4 are respectively provided with a wood pulp absorption core, which is clean and sanitary and has good absorption of the menstrual blood. In addition, the high water absorption resin (SAP) particles are embedded in the absorption layer 3 and / or the reinforcing layer 4 to further increase the absorption amount.
[0028] In the embodiment, the first protrusion 32 and the second protrusion 42 are used to form a three-dimensional space for containing the menstrual blood between the absorption layer 3, the reinforcing layer 4 and the bottom film 5, which increases the absorption amount of the menstrual blood and also adapts to the expansion of the high water absorption resin particles to further reduce the back infiltration problem.
[0029] The above is only a preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation and application range can be changed, and the content of the specification should not be understood as a limitation of the present application.
Claims
1. A reinforced absorbent low-permeability sanitary napkin characterized in that, The diaper comprises, from top to bottom, a surface layer, a flow guide layer, an absorption layer, a reinforcing layer and a bottom film, the top surface of the absorption layer is provided with first grooves, the top surface of the reinforcing layer is provided with second grooves, the bottom surface of the absorption layer is provided with first protrusions below the first grooves, the bottom surface of the reinforcing layer is provided with second protrusions below the second grooves, and the projection of the absorption layer on a horizontal plane covers the projection of the reinforcing layer on the horizontal plane.
2. The reinforced absorbent low-permeable sanitary napkin according to claim 1, characterized in that, The projections of the first grooves and the second grooves on the horizontal plane are staggered.
3. The reinforced absorbent low-permeable sanitary napkin according to claim 1, characterized in that, The flow guide layer is a three-dimensional flow guide non-woven fabric.
4. The reinforced absorbent low-permeable sanitary napkin according to claim 1, characterized in that, The first grooves and the second grooves have a trumpet mouth structure or a funnel structure from top to bottom.
5. The reinforced absorbent low-permeable sanitary napkin according to claim 1, characterized in that, The surface layer comprises a first cotton fiber non-woven fabric layer.
6. The reinforced absorbent low-permeable sanitary napkin according to claim 1, characterized in that, The surface layer further comprises a second cotton fiber non-woven fabric layer below the first cotton fiber non-woven fabric layer.
7. The reinforced absorbent low-permeable sanitary napkin according to claim 1, characterized in that, The bottom film comprises a waterproof and breathable film.
8. The reinforced absorbent low-permeable sanitary napkin according to claim 1, characterized in that, The absorption layer and the reinforcing layer each comprise a wood pulp absorption core.
9. The reinforced absorbent low-permeable sanitary napkin according to claim 8, characterized in that High water absorption resin particles are embedded in the absorption layer and / or the reinforcing layer.