Divided-flow type quick-suction sanitary towel
Sanitary napkins with a diversion design utilize polypropylene, polymer fibers, SAP, and polyurethane (PU) materials, combined with leak-proof rings and Velcro, to solve the problems of uneven fluid distribution and displacement, achieving more efficient liquid absorption and leak-proof effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN NICEPAPER HYGIENE PROD CO LTD
- Filing Date
- 2024-11-08
- Publication Date
- 2026-04-24
AI Technical Summary
The pointed, conical holes in existing sanitary napkins may cause fluid to concentrate at the opening, resulting in uneven distribution. Furthermore, frequent turning during sleep can cause the sanitary napkin to shift, leading to menstrual leakage.
It adopts a diversion design, including an outer layer, a diversion layer, an absorption layer, a leak-proof layer, and an adhesive layer. It utilizes polypropylene, polymer fibers, SAP, and polyurethane (PU) materials, combined with a leak-proof ring, streamlined bumps, and Velcro to ensure uniform liquid distribution and prevent displacement.
It improves liquid absorption efficiency and leak-proof performance, prevents liquid side leakage and sanitary napkin displacement, and ensures stability and comfort during use.
Smart Images

Figure CN224155893U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sanitary napkin technology, and in particular to a diversion-type quick-absorption sanitary napkin. Background Technology
[0002] Currently, women generally use sanitary napkins or panty liners to absorb menstrual waste during menstruation. Sanitary napkins are absorbent materials, mainly made of cotton, non-woven fabric, pulp, or polymers and polymer composite paper formed from the above materials.
[0003] Chinese Patent CN209645248U discloses a seamless, instant-absorbing, and quick-drying sanitary napkin, relating to the field of feminine hygiene products. It comprises, from the skin-friendly side outwards, a skin-friendly surface layer, an absorbent core, and a bottom film. The skin-friendly surface layer has symmetrically arranged rapid-flow perforations at its center, facing both ends of the sanitary napkin. The cross-section of each rapid-flow perforation is conical, and the channels are sloping within the skin-friendly surface. The upper opening of each rapid-flow perforation is integrally formed on the upper surface of the skin-friendly surface, and an arc-shaped transition surface connects the edge of the upper opening to the upper surface of the skin-friendly surface. The lower opening of each rapid-flow perforation is located within the absorbent core, which contains multiple quick-guiding tampons arranged along the length of the sanitary napkin. These quick-guiding tampons of this invention can quickly guide liquid to areas away from the center of the absorbent core, achieving instant absorption and quick drying, and preventing stains on underwear due to leakage.
[0004] However, when using sanitary napkins, the pointed cone shape of the above solution may cause fluid to concentrate at the opening, resulting in uneven fluid distribution. The pointed cone shape is not good at controlling the flow rate when facing different flow rates. In addition, during the nights when menstruation is heavy, some people may not sleep soundly and their frequent turning and moving may cause the sanitary napkin to shift, resulting in menstrual leakage onto the sheets. Therefore, a diversion-type quick-absorption sanitary napkin is proposed to solve the above problems. Utility Model Content
[0005] Based on the existing technical problems that the shape of the pointed cone-shaped hole of the sanitary napkin may cause the fluid to concentrate at the opening, resulting in uneven fluid distribution, and frequent turning during sleep may cause the sanitary napkin to shift, thus causing menstrual leakage onto the bed sheet, this utility model proposes a diversion-type quick-absorption sanitary napkin.
[0006] This utility model proposes a diversion-type quick-absorption sanitary napkin, which includes a sanitary napkin body, the sanitary napkin body including an outer layer, a diversion layer, an absorbent layer, a leak-proof layer and an adhesive layer.
[0007] The outer surface of the outer layer is provided with a leak-proof mechanism, which includes a leak-proof ring. The groove design of the leak-proof ring prevents liquid from leaking to the side.
[0008] Preferably, the outer layer is made of polypropylene, and the diversion layer is disposed between the outer layer and the absorption layer.
[0009] Through the above technical solution, polypropylene is a lightweight and soft plastic material with good breathability and comfort. It effectively blocks liquid leakage and keeps the sanitary napkin dry. The distribution layer is located between the outer layer and the absorbent layer. Its main function is to distribute the liquid evenly to the absorbent layer, thereby improving the overall absorption efficiency.
[0010] Preferably, the outer surface of the diversion layer is provided with a V-shaped groove, and the material of the diversion layer is polymer fiber.
[0011] Through the above technical solution, the V-groove helps to effectively guide the liquid to the absorption layer, preventing the liquid from concentrating in a certain part, thereby improving the overall absorption efficiency and leak-proof performance. The cross-section of the V-groove is an inverted triangle, and the inverted triangle shape helps to better guide the liquid flow to the central area of the distribution layer, reducing the accumulation of liquid at the edge. The polymer fiber has good moisture absorption and durability, which helps to quickly distribute the liquid while maintaining lightness and comfort.
[0012] Preferably, the absorbent layer is disposed between the diversion layer and the leak-proof layer, and the outer surface of the absorbent layer is provided with a thickening layer. Both the thickening layer and the absorbent layer are made of SAP and pulp.
[0013] Through the above technical solutions, SAP (super absorbent polymer) provides high-efficiency water absorption, which can quickly absorb and lock in liquids. The pulp enhances structural stability and absorption capacity. When used in conjunction with SAP, it improves overall performance. The thickened layer increases the thickness of the absorbent layer, further improving the liquid absorption capacity and comfort.
[0014] Preferably, the leak-proof layer is disposed between the absorbent layer and the adhesive layer, and the leak-proof layer is made of polyurethane (PU).
[0015] Through the above technical solutions, polyurethane (PU) materials have excellent waterproof performance, which can effectively prevent liquid leakage and protect the bottom of the product and the external environment.
[0016] Preferably, the outer surface of the sanitary napkin body is fixedly adhered with a hook and loop side and a hook and loop side, respectively, and the outer surface of the hook and loop side is fixedly adhered to the outer surface of the hook and loop side, and the material of the adhesive layer is an adhesive.
[0017] Through the above technical solution, the two parts of the Velcro can be combined with each other to ensure that the sanitary napkin body can remain stable during use and can be repeatedly adhered and peeled off. The adhesive is used to ensure that the sanitary napkin body is fixed to the clothing.
[0018] Preferably, the leak-proof mechanism further includes streamlined protrusions, which are fixedly bonded to the outer surface of the outer layer. Anti-slip protrusions are fixedly bonded to the outer surface of the outer layer, and the outer surface of the outer layer is fixedly bonded to the outer surface of the leak-proof ring.
[0019] Through the above technical solutions, the streamlined protrusion design makes fluid flow smoother and effectively reduces fluid interference. The anti-slip protrusion conforms to the curve of the human body and can effectively prevent the sanitary napkin body from shifting. The leak-proof ring prevents liquid from leaking out from the edge of the sanitary napkin through the groove design, avoiding liquid overflowing from the edge of the sanitary napkin during use.
[0020] The beneficial effects of this utility model are as follows:
[0021] 1. By setting an outer layer, a distribution layer, an absorbent layer, a leak-proof layer, and an adhesive layer, polypropylene effectively blocks liquid leakage. The V-shaped grooves in the distribution layer help to effectively guide liquid distribution to the absorbent layer. The cross-section of the V-shaped grooves is an inverted triangle, which helps to better guide the liquid flow to the central area of the distribution layer. Polymer fibers have good moisture absorption and durability, while SAP (super absorbent polymer) provides high-efficiency water absorption. Pulp enhances structural stability and absorption capacity, and its use in conjunction with SAP improves overall performance. The thickened layer increases the thickness of the absorbent layer, further improving liquid absorption capacity and comfort. Polyurethane (PU) material has excellent waterproof performance. The two parts of the Velcro can be combined to ensure that the sanitary napkin body remains stable during use and can be repeatedly adhered and peeled off. The adhesive is used to ensure that the sanitary napkin body is fixed to clothing. This solves the technical problem that the shape of the pointed conical hole may cause fluid to concentrate at the orifice, resulting in uneven fluid distribution, and the pointed conical hole is insufficient in controlling the flow rate when facing different flow rates.
[0022] 2. By incorporating a leak-proof mechanism, liquid leakage is prevented. The streamlined protrusion design ensures smoother fluid flow and effectively reduces fluid interference. The anti-slip protrusions conform to the body's curves, effectively preventing the sanitary napkin from shifting. The leak-proof ring, with its grooved design, prevents liquid leakage from the edges of the sanitary napkin during use. This addresses the technical problem of menstrual leakage on the sheets caused by frequent turning and moving during the night when some people may not sleep soundly. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of a diversion-type quick-absorption sanitary napkin proposed in this utility model;
[0024] Figure 2 This is a perspective view of the diversion layer structure of a diversion-type quick-absorption sanitary napkin proposed in this utility model;
[0025] Figure 3 A perspective view of the leak-proof ring structure of a diversion-type quick-absorption sanitary napkin proposed in this utility model;
[0026] Figure 4 This is a perspective view of the anti-slip protrusion structure of a diversion-type quick-absorption sanitary napkin proposed in this utility model;
[0027] Figure 5 This is a perspective view of the V-groove structure of a diversion-type quick-absorption sanitary napkin proposed in this utility model.
[0028] In the diagram: 1. Sanitary napkin body; 2. Outer layer; 21. Distribution layer; 3. V-groove; 4. Absorbent layer; 41. Leak-proof layer; 42. Thickened layer; 5. Adhesive layer; 6. Hook and loop fastener; 61. Hook and loop hook fastener; 7. Streamlined protrusions; 71. Anti-slip protrusions; 72. Leak-proof ring. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0030] Reference Figures 1-5 A diversion-type quick-absorption sanitary napkin includes a sanitary napkin body 1, wherein the sanitary napkin body 1 includes an outer layer 2, a diversion layer 21, an absorbent layer 4, a leak-proof layer 41, and an adhesive layer 5.
[0031] To ensure that the liquid is evenly distributed to the absorbent layer 4, the outer layer 2 is made of polypropylene. The diversion layer 21 is located between the outer layer 2 and the absorbent layer 4. Polypropylene is a lightweight and soft plastic material with good breathability and comfort. It effectively prevents liquid leakage and keeps the sanitary napkin dry. The diversion layer 21 is located between the outer layer 2 and the absorbent layer 4, and its main function is to evenly distribute the liquid to the absorbent layer 4, thereby improving the overall absorption efficiency.
[0032] To better guide the liquid flow to the central area of the distribution layer 21, a V-shaped groove 3 is formed on the outer surface of the distribution layer 21. The material of the distribution layer 21 is polymer fiber. The V-shaped groove 3 helps to effectively guide the liquid to the absorption layer 4, preventing the liquid from concentrating in a certain part, thereby improving the overall absorption efficiency and leak-proof performance. The cross-section of the V-shaped groove 3 is an inverted triangle. The inverted triangle shape helps to better guide the liquid flow to the central area of the distribution layer 21, reducing the accumulation of liquid at the edges. Polymer fiber has good moisture absorption and durability, which helps to quickly divert and distribute the liquid, while maintaining lightness and comfort.
[0033] To quickly absorb and lock in liquids, the absorbent layer 4 is positioned between the diversion layer 21 and the leak-proof layer 41. A thickening layer 42 is provided on the outer surface of the absorbent layer 4. Both the thickening layer 42 and the absorbent layer 4 are made of SAP and pulp. SAP (super absorbent polymer) provides high-efficiency water absorption, enabling it to quickly absorb and lock in liquids. Pulp enhances structural stability and absorption capacity. When used in conjunction with SAP, it improves overall performance. The thickening layer 42 increases the thickness of the absorbent layer 4, further improving the liquid absorption capacity and comfort.
[0034] To effectively prevent liquid leakage, a leak-proof layer 41 is disposed between the absorbent layer 4 and the adhesive layer 5. The leak-proof layer 41 is made of polyurethane (PU), which has excellent waterproof performance and can effectively prevent liquid leakage, protecting the bottom of the product and the external environment.
[0035] To ensure that the sanitary napkin body 1 remains stable during use and can be repeatedly adhered and peeled off, the outer surface of the sanitary napkin body 1 is fixedly adhered with a hook and loop side 6 and a hook and loop side 61. The outer surface of the hook and loop side 6 and the outer surface of the hook and loop side 61 are fixedly adhered. The adhesive layer 5 is made of adhesive. The two parts of the hook and loop can be combined with each other to ensure that the sanitary napkin body 1 remains stable during use and can be repeatedly adhered and peeled off. The adhesive is used to ensure that the sanitary napkin body 1 is fixed to the clothing.
[0036] By setting the outer layer 2, the diversion layer 21, the absorbent layer 4, the leak-proof layer 41, and the adhesive layer 5, polypropylene effectively blocks liquid leakage. The V-shaped groove 3 of the diversion layer 21 helps to effectively guide the liquid to the absorbent layer 4. The cross-section of the V-shaped groove 3 is an inverted triangle, and the inverted triangle shape helps to better guide the liquid flow to the central area of the diversion layer 21. Polymer fibers have good moisture absorption and durability, and SAP (super absorbent polymer) provides high-efficiency water absorption capacity. Pulp enhances structural stability and absorption capacity. When used with SAP, it improves overall performance. The thickened layer 42 increases the thickness of the absorbent layer 4, further improving the liquid absorption capacity and comfort. Polyurethane (PU) material has excellent waterproof performance. The two parts of the Velcro can be combined with each other to ensure that the sanitary napkin body 1 can remain stable during use and can be repeatedly adhered and peeled. The adhesive is used to ensure that the sanitary napkin body 1 is fixed to clothing. This solves the technical problem that the shape of the pointed cone hole may cause the fluid to concentrate at the orifice when using the sanitary napkin, which may cause uneven fluid distribution. The pointed cone hole is also insufficient in controlling the flow rate when facing different flow rates.
[0037] To prevent liquid side leakage, the outer surface of the outer layer 2 is provided with a leak-proof mechanism, which includes a leak-proof ring 72. The groove design of the leak-proof ring 72 prevents liquid side leakage.
[0038] To prevent displacement of the sanitary napkin body 1, the leak-proof mechanism also includes streamlined protrusions 7, which are fixedly bonded to the outer surface of the outer layer 2. Anti-slip protrusions 71 are fixedly bonded to the outer surface of the outer layer 2, and the outer surface of the outer layer 2 is fixedly bonded to the outer surface of the leak-proof ring 72. Through the design of the streamlined protrusions 7, the fluid flow is smoother and the interference of the fluid is effectively reduced. The anti-slip protrusions 71 conform to the curve of the human body and can effectively prevent displacement of the sanitary napkin body 1. The leak-proof ring 72 prevents liquid side leakage through the groove design and avoids liquid overflowing from the edge of the sanitary napkin during use.
[0039] By incorporating a leak-proof mechanism to prevent side leakage of liquid, the streamlined protrusion 7 design allows for smoother fluid flow and effectively reduces fluid interference. The anti-slip protrusion 71 conforms to the curves of the human body, effectively preventing displacement of the sanitary napkin body 1. The leak-proof ring 72, with its groove design, prevents side leakage of liquid and avoids liquid overflowing from the edge of the sanitary napkin during use. This solves the technical problem that when using sanitary napkins, especially during the nights of heavy menstruation, some people may not sleep soundly and their frequent turning and moving can cause the sanitary napkin to shift, resulting in menstrual leakage onto the sheets.
[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 diversion-type quick-absorption sanitary napkin, comprising a sanitary napkin body (1), characterized in that: The sanitary napkin body (1) includes an outer layer (2), a distribution layer (21), an absorbent layer (4), a leak-proof layer (41), and an adhesive layer (5). The outer surface of the outer layer (2) is provided with a leak-proof mechanism, which includes a leak-proof ring (72) to prevent liquid side leakage through the groove design of the leak-proof ring (72).
2. The diversion-type quick-absorption sanitary napkin according to claim 1, characterized in that: The outer layer (2) is made of polypropylene, and the diversion layer (21) is disposed between the outer layer (2) and the absorption layer (4).
3. The diversion-type quick-absorption sanitary napkin according to claim 2, characterized in that: The outer surface of the diversion layer (21) is provided with a V-shaped groove (3), and the material of the diversion layer (21) is polymer fiber.
4. The diversion-type quick-absorption sanitary napkin according to claim 3, characterized in that: The absorbent layer (4) is disposed between the diversion layer (21) and the leak-proof layer (41). The outer surface of the absorbent layer (4) is provided with a thickening layer (42). The materials of the thickening layer (42) and the absorbent layer (4) are both SAP and pulp.
5. A diversion-type quick-absorption sanitary napkin according to claim 4, characterized in that: The leak-proof layer (41) is disposed between the absorbent layer (4) and the adhesive layer (5), and the leak-proof layer (41) is made of polyurethane (PU).
6. A diversion-type quick-absorption sanitary napkin according to claim 5, characterized in that: The outer surface of the sanitary napkin body (1) is fixedly bonded with a hook and loop side (6) and a hook and loop side (61). The outer surface of the hook and loop side (6) is fixedly bonded to the outer surface of the hook and loop side (61). The material of the adhesive layer (5) is an adhesive.
7. A diversion-type quick-absorption sanitary napkin according to claim 6, characterized in that: The leak-proof mechanism also includes a streamlined protrusion (7), which is fixedly bonded to the outer surface of the outer layer (2). An anti-slip protrusion (71) is fixedly bonded to the outer surface of the outer layer (2), and the outer surface of the outer layer (2) is fixedly bonded to the outer surface of the leak-proof ring (72).
Citation Information
Patent Citations
Traceless instant-absorption quick-drying sanitary towel
CN209645248U