Sanitary towel capable of instantly sucking occult blood
By using water-repellent fiber nonwoven fabric and an instant absorption groove design in the diversion layer of sanitary napkins, the problems of menstrual blood residue and side leakage are solved, achieving rapid absorption and improved safety.
Patent Information
- Application Number
- CN202422882539.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing sanitary napkins have poor water-wicking efficiency in their surface layer, leading to problems such as menstrual blood residue and side leakage. Furthermore, existing sanitary napkins with occult blood are expensive, and the safety of the blood-stabilizing agents used in them has not been verified.
The surface layer is made of water-repellent fiber nonwoven fabric, and the flow guiding layer is filled with wood pulp through grooves and superabsorbent polymer particles through holes to achieve rapid absorption and vertical transfer of menstrual blood, reducing the risk of lateral flow and side leakage.
It improves the speed of menstrual blood absorption, reduces surface residue, lowers the risk of side leakage, and ensures safety and cost-effectiveness through structural design.
Smart Images

Figure CN223746567U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sanitary towel technical field especially, relate to a kind of instantaneous absorption hidden blood sanitary towel. BACKGROUND
[0002] In order to increase the comfort of use, the surface layer of sanitary towel is mostly used cotton soft non-woven fabric, and the skin-friendly property of cotton soft non-woven fabric is good, but the water guiding efficiency is slightly poor, so that part of menstrual blood remains in the surface layer, which reduces the comfort of body feeling and easily leads to side leakage problem.
[0003] The utility model patent with application number 2018210798736 discloses a hidden blood sanitary towel, menstrual blood can completely penetrate the liquid-permeable surface layer, and the liquid guiding layer is quickly pulled to make the absorption core quickly absorb, and a blood stability imparting agent is added in a coating manner on the liquid guiding layer or the absorption core to reduce the viscosity of menstrual blood and improve the stability of menstrual blood. The cost is relatively high, and whether the blood stability imparting agent has irritation to the private parts of the human body has not been verified, and improvement is needed. UTILITY MODEL CONTENT
[0004] The utility model aims to provide a kind of instantaneous absorption hidden blood sanitary towel, improve the rapidity of menstrual blood absorption and reduce the problem of surface residue.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] An instantaneous absorption hidden blood sanitary towel includes a surface layer, a flow guide layer, an absorption layer and a bottom film layer stacked in order from top to bottom, the surface layer uses water-repellent fiber non-woven fabric, the flow guide layer includes first, second and third hot air non-woven fabrics stacked in order from top to bottom, the second hot air non-woven fabric has a instantaneous absorption groove in the middle that connects the first and third hot air non-woven fabrics, the instantaneous absorption groove is filled with wood pulp, the absorption layer has a through hole below the instantaneous absorption groove, and the through hole is filled with high molecular water-absorbing resin particles.
[0007] The water-repellent fiber non-woven fabric uses 1.5-2.5 denier polyester water-repellent fiber non-woven fabric.
[0008] The absorption layer uses a layer of wood pulp.
[0009] The bottom surface of the surface layer is concave and has a conical groove above the instantaneous absorption groove.
[0010] The instantaneous absorption groove has an elliptical structure.
[0011] The bottom film layer uses a waterproof and breathable film.
[0012] The utility model discloses a beneficial effect: a kind of instantaneous absorption hidden blood sanitary towel, menstrual blood can be directly transmitted to flow guide layer by the water-repellent fiber nonwoven fabric of surface layer, and concentrated absorption is carried out by wood pulp in instantaneous absorption groove in flow guide layer, the rapidity of absorption of menstrual blood in surface layer is improved, the problem of menstrual blood residue on surface layer is reduced, and the absorption of menstrual blood in wood pulp in instantaneous absorption groove is carried out using macromolecular water-absorbing resin particles in through-hole below instantaneous absorption groove, vertical downward transmission of menstrual blood is realized, the problem of horizontal flow of menstrual blood on surface layer and first hot air nonwoven fabric is reduced, thereby reducing the risk of side leakage, and the effect of surface layer hidden blood is improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the structure schematic diagram of the utility model;
[0014] Figure 2 It is Figure 1 Structure schematic diagram after instantaneous absorption groove and through-hole in it are emptied. DETAILED DESCRIPTION
[0015] The technical scheme of the utility model will be further illustrated below in combination with specific embodiments. Figures 1-2
[0016] A kind of instantaneous absorption hidden blood sanitary towel, including: including from top to bottom sequentially laminated surface layer 1, flow guide layer, absorption layer 10 and bottom film layer 7, the edge of surface layer 1, flow guide layer, absorption layer 10 and bottom film layer 7 is fixed by heat pressing, ultrasonic welding or bonding, and the structure is stable.Surface layer 1 uses water-repellent fiber nonwoven fabric, which can directly transmit menstrual blood to flow guide layer, reducing the problem of menstrual blood residue on surface layer 1.
[0017] The water-repellent fiber nonwoven fabric uses 1.5-2.5 denier polyester water-repellent fiber nonwoven fabric, and in the embodiment, 2 denier polyester water-repellent fiber is used for nonwoven fabric production, to ensure the loft and softness of surface layer 1, and good body comfort.
[0018] In the embodiment, the flow guide layer includes first hot air nonwoven fabric 2, second hot air nonwoven fabric 4 and third hot air nonwoven fabric 5 sequentially laminated from top to bottom, the second hot air nonwoven fabric 4 middle part is provided with instantaneous absorption groove 11 communicating the first hot air nonwoven fabric 2 and the third hot air nonwoven fabric 5, the instantaneous absorption groove 11 is filled with wood pulp 3, and the wood pulp 3 in the instantaneous absorption groove 11 is used for concentrated absorption of upper menstrual blood, to improve the rapidity of absorption of menstrual blood in the middle part of surface layer 1, reduce the problem of menstrual blood residue on surface layer 1, and facilitate to reduce the diffusion of menstrual blood along the plane direction of surface layer 1.
[0019] As Figure 2 As shown, the bottom surface of the surface layer 1 is concave, and a conical groove 9 is arranged above the instantaneous absorption groove 11, and the instantaneous absorption groove 11 has an elliptical structure, and the conical groove 9 is concentrated in the elliptical area corresponding to the instantaneous absorption groove 11 in the middle of the surface layer 1, that is, the area close to the human private part where the menstrual blood flows out. Under the absorption force of the wood pulp 3 on the menstrual blood, it is beneficial to quickly introduce the menstrual blood on the surface layer 1 downward into the conical groove 9 for absorption by the wood pulp 3 in the instantaneous absorption groove 11, reduce the residence of the menstrual blood on the top surface of the surface layer 1, and further reduce the problem of horizontal flow of the menstrual blood on the surface layer 1 and the first hot air non-woven fabric 2.
[0020] In the embodiment, the absorption layer 10 adopts a layer of wood pulp, and the third hot air non-woven fabric 5 is used to diffuse the menstrual blood in the flow guide layer in the plane and thickness directions, which is beneficial to improve the absorption effect of the absorption layer 10. The bottom film layer 7 adopts a waterproof and breathable film, which is waterproof while ensuring a certain breathable effect.
[0021] As shown in Figure 1 and Figure 2 As shown, the absorption layer 10 is arranged with a through hole 8 below the instantaneous absorption groove 11, and the through hole 8 is filled with high molecular water-absorbing resin particles 6, and the high molecular water-absorbing resin particles 6 have better water absorption effect and can absorb the menstrual blood in the wood pulp 3 in the instantaneous absorption groove 11, realize vertical downward transmission of the menstrual blood, further reduce the problem of horizontal flow of the menstrual blood on the surface layer 1 and the first hot air non-woven fabric 2, thereby reducing the risk of side leakage and improving the surface layer blood hiding effect.
[0022] 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 mode 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 pantiliner having a flash absorbent blood, characterized by, The diaper comprises, from top to bottom, a surface layer, a flow guide layer, an absorption layer and a bottom film layer, the surface layer adopts water repellent fiber non-woven fabric, the flow guide layer comprises, from top to bottom, a first hot air non-woven fabric, a second hot air non-woven fabric and a third hot air non-woven fabric, the middle part of the second hot air non-woven fabric is provided with instant absorption grooves communicating the first hot air non-woven fabric and the third hot air non-woven fabric, the instant absorption grooves are filled with wood pulp, the absorption layer is provided with through holes below the instant absorption grooves, and the through holes are filled with high molecular water absorption resin particles.
2. The instant-absorbent sanitary napkin of claim 1 wherein, The water repellent fiber non-woven fabric adopts 1.5-2.5 denier polyester water repellent fiber non-woven fabric.
3. The instant-absorbent sanitary napkin of Claim 1 wherein, The absorption layer adopts a layer of wood pulp.
4. The instant-absorbent sanitary napkin of Claim 1 wherein, The bottom surface of the surface layer is concave and provided with conical grooves above the instant absorption grooves.
5. The instant-absorbent sanitary napkin of Claim 1 wherein, The instant absorption grooves adopt an elliptical structure.
6. The instant absorption occult blood sanitary napkin according to claim 1, wherein The bottom film layer adopts a waterproof and breathable film.