A sanitary napkin having a flow directing system

Abstract

The application provides a flow guide sanitary napkin, which comprises a base layer assembly, an absorbing core body arranged in the base layer assembly and provided with a groove, and a flow guide core body embedded in the groove and used for absorbing menstrual blood and guiding the menstrual blood into the absorbing core body. The menstrual blood is rapidly diffused through the flow guide core body and diffused downward, and then diffused longitudinally through the base layer assembly into the absorbing core body. Meanwhile, the menstrual blood is diffused into the absorbing core body through the flow guide core body. The menstrual blood is rapidly diffused in all directions and downward through the flow guide core body, the diffusion speed is improved, the sticky feeling during use is reduced, and dryness is improved.

Description

Technical Field

[0001] This application relates to a sanitary napkin, and more particularly to a diverting sanitary napkin. Background Technology

[0002] In the current structure of sanitary napkins, menstrual blood needs to penetrate from top to bottom, from the surface to the absorbent core, and then gradually spread outwards from the center of the absorbent core. This process results in a relatively slow rate of blood penetration. The national standard requires less than 60 seconds, but actual laboratory tests show an initial penetration time between 15-30 seconds. Furthermore, as menstrual blood is continuously absorbed by the sanitary napkin, the polymer in the core absorbent area expands, blocking the channels for blood penetration and diffusion. This further slows down the penetration process, eventually leading to leakage or accumulation of menstrual blood on the surface of the sanitary napkin, resulting in a sticky feeling and poor dryness for consumers. Utility Model Content

[0003] This application provides a diverting sanitary napkin to solve the problems existing in related technologies. The technical solution is as follows:

[0004] This application provides a drainage sanitary napkin, comprising:

[0005] Basic components;

[0006] The absorbent core is set inside the base component and has grooves on it;

[0007] The flow guide core is embedded in the groove. The flow guide core absorbs menstrual blood and guides the menstrual blood into the absorption core.

[0008] In one implementation,

[0009] The flow guide core is made of air-core knitted fabric, and its shape is adapted to the groove.

[0010] In one implementation,

[0011] The basic components include:

[0012] Breathable bottom membrane;

[0013] The auxiliary diffusion layer is set on the breathable bottom membrane. The absorbent core and the guide core are both attached to the side of the auxiliary diffusion layer away from the breathable bottom membrane. The menstrual blood in the guide core diffuses longitudinally through the auxiliary diffusion layer.

[0014] A flow guiding layer is disposed on the side of the absorber core away from the auxiliary diffusion layer;

[0015] A water-repellent surface layer is placed on the side of the guide layer away from the absorbent core.

[0016] In one implementation,

[0017] The base components also include:

[0018] Water-repellent and breathable bottom membrane with protective wings; water-repellent and waterproof edges are set on the protective wings.

[0019] In one implementation,

[0020] The water-repellent surface has several through holes, with a size of 8 to 12 mesh.

[0021] In one implementation,

[0022] The flow guide core has protrusions that are higher than the surface of the grooves.

[0023] In one implementation,

[0024] The sizes of the auxiliary diffusion layer, the flow guiding layer, the water-repellent surface layer, and the absorbent core are matched.

[0025] In one implementation,

[0026] The flow guide layer is made of hydrophilic hot air nonwoven fabric with a fiber thickness of 2 to 6 denier.

[0027] In one implementation,

[0028] The auxiliary diffusion layer is made of dust-free paper that does not contain superabsorbent polymer.

[0029] In one implementation,

[0030] The breathable bottom membrane is a PE breathable membrane.

[0031] The advantages or beneficial effects of the above technical solutions include at least the following:

[0032] The design of the flow guide core allows for rapid diffusion of menstrual blood. The blood spreads downwards through the flow guide core and then vertically through the base layer components into the absorbent core. Simultaneously, the blood also spreads towards the absorbent core through the flow guide core. This rapid diffusion of menstrual blood in all directions and downwards through the flow guide core increases the diffusion speed while reducing stickiness during use and improving dryness.

[0033] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0034] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0035] Figure 1 This is a schematic diagram of the disassembly structure of this utility model;

[0036] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0037] Figure 3 This is a schematic diagram showing the flow direction of menstrual blood in this utility model;

[0038] Figure 4 This is a partial schematic diagram of the flow guide core;

[0039] 100. Base layer component; 110. Breathable bottom membrane; 120. Auxiliary diffusion layer; 130. Diversion layer; 140. Water-repellent surface layer; 150. Water-repellent side barrier;

[0040] 200. Absorbing core; 210. Groove;

[0041] 300. Flow guide core. Detailed Implementation

[0042] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0043] Figures 1-4 This diagram illustrates the structure of a flow-directing sanitary napkin according to an embodiment of this application. Figures 1-4 As shown, the diversion sanitary napkin may include:

[0044] 100 base components;

[0045] Absorbing core 200 is disposed within the base component 100, and the absorbing core 200 has a groove 210.

[0046] The flow guide core 300 is embedded in the groove 210. The flow guide core 300 absorbs menstrual blood and guides the menstrual blood into the absorbent core 200.

[0047] In this embodiment, menstrual blood enters the guide core 300 through the surface of the base component 100 and diffuses into the absorbent core 200. While the guide core 300 diffuses the menstrual blood into the absorbent core 200, the bottom of the guide core 300 is cleared by the base component 100, thereby allowing the menstrual blood to diffuse longitudinally into the absorbent core 200, thus accelerating the diffusion speed of the menstrual blood.

[0048] By setting up the flow guide core 300, menstrual blood is rapidly diffused. The menstrual blood spreads rapidly downward through the flow guide core 300, and then spreads longitudinally through the base layer component 100 into the absorbent core 200. At the same time, the menstrual blood also spreads to the absorbent core 200 through the flow guide core 300. This achieves rapid diffusion in all directions and downwards through the flow guide core 300, which improves the diffusion speed, reduces the stickiness during use, and improves dryness.

[0049] like Figures 1-4 As shown, in one embodiment,

[0050] The flow guide core 300 is made of air core knitted fabric, and the shape of the flow guide core 300 is adapted to the groove 210.

[0051] In this embodiment, specifically, the flow guide core 300 is made of air core knitted fabric with a weight of 150-250 gsm and a size of 90 mm × 25 mm (length × width). It is embedded in the groove 210 in the middle of the absorbent core 200. The flow guide core 300 has vertically downward fiber structures distributed inside, which facilitates the rapid downward flow of menstrual blood into the base layer component 100.

[0052] Furthermore, when the sanitary napkin is worn, the diversion core 300 corresponds to the user's genital area.

[0053] like Figures 1-4 As shown, in one embodiment,

[0054] The base component 100 includes:

[0055] Breathable bottom membrane 110;

[0056] The auxiliary diffusion layer 120 is disposed on the breathable bottom membrane 110. The absorbent core 200 and the guide core 300 are both attached to the side of the auxiliary diffusion layer 120 away from the breathable bottom membrane 110. The menstrual blood in the guide core 300 diffuses longitudinally through the auxiliary diffusion layer 120.

[0057] The flow guiding layer 130 is disposed on the side of the absorber core 200 away from the auxiliary diffusion layer 120;

[0058] Water-repellent surface layer 140 is disposed on the side of the guide layer 130 away from the absorbent core 200.

[0059] In this embodiment, the water-repellent surface layer 140 is provided to prevent menstrual blood from remaining on the surface. When worn, the water-repellent surface layer 140 is in contact with the skin, and menstrual blood penetrates into the diversion layer 130 through the water-repellent surface layer 140.

[0060] Specifically, the water-repellent surface 140 has several through holes with a size of 8 to 12 mesh. Through the through holes, menstrual blood can penetrate into the guide layer 130, thereby ensuring the dryness of the water-repellent surface and preventing menstrual blood in the guide layer 130 from wetting the skin.

[0061] Specifically, the flow guiding layer 130 is a hydrophilic hot air nonwoven fabric with a basis weight of 18-25 gsm. It requires a fiber fineness of 2-6 denier and a loose structure. The flow guiding layer 130 guides the menstrual blood transported in the through holes, allowing the menstrual blood to diffuse into the absorbent core 200 and the flow guiding core 300 respectively.

[0062] Specifically, the auxiliary diffusion layer 120 is a dust-free paper without superabsorbent polymer resin, which is laid flat below the flow guide core 300 and the absorbent core 200. The dust-free paper is composed of short fluff pulp and long viscose fibers, and the viscose fibers are arranged longitudinally to facilitate the rapid longitudinal flow of menstrual blood in the auxiliary diffusion layer 120 to the sanitary napkin.

[0063] Specifically, the breathable bottom membrane 110 is a PE breathable membrane, which is used to prevent menstrual blood leakage;

[0064] During the process of menstrual blood flowing from the water-repellent surface layer 140 to the flow-guiding core 300, there is no obstruction throughout the entire process, which can achieve rapid infiltration.

[0065] Menstrual blood in the diverting core 300 is rapidly diffused longitudinally into the sanitary napkin through the auxiliary diffusion layer 120. Since the auxiliary diffusion layer 120 does not contain super absorbent polymer, the diffusion speed of the entire menstrual blood diffusion process will not be affected by the expansion and compression of the absorption channel after the super absorbent polymer absorbs the liquid.

[0066] During the diffusion of menstrual blood through the auxiliary diffusion layer 120, the absorbent core 200 begins to continuously absorb the menstrual blood and uses superabsorbent polymer resin to lock in the menstrual blood, thus achieving the final function of absorbing menstrual blood; the breathable bottom membrane 110 is breathable but not water-permeable, preventing menstrual blood from leaking downwards.

[0067] It should be noted that the absorber core 200 and the auxiliary diffusion layer 120 form a groove 210, the flow guide core 300 is embedded in the groove 210, and the bottom of the flow guide core 300 is in contact with the auxiliary diffusion layer 120, and the side is in contact with the absorber core 200.

[0068] like Figure 1 As shown, in one embodiment,

[0069] The base component 100 also includes:

[0070] Water-repellent side panel 150, breathable bottom membrane 110 has protective wings, and water-repellent side panel 150 is set on the protective wings.

[0071] In this embodiment, the main function of the water-repellent side panels 150 on both sides is to prevent side leakage and improve the skin-friendly experience of the sanitary napkin side panels. The weight is 15-25gsm, and the material can be hot air water-repellent non-woven fabric, pure cotton spunlace water-repellent non-woven fabric, spunbond water-repellent non-woven fabric, etc.

[0072] The aforementioned water-repellent edge 150, water-repellent surface layer 140, flow guiding layer 130, flow guiding core 300, absorbent core 200, auxiliary diffusion layer 120, and breathable bottom membrane 110 are bonded together as a whole using an appropriate amount of hot melt adhesive.

[0073] like Figures 2-3 As shown, in one embodiment,

[0074] The flow guide core 300 has a protrusion that is higher than the surface of the groove 210.

[0075] In this embodiment, by providing protrusions on the flow guide core 300, it is ensured that the flow guide core 300 can better fit the human body, thereby ensuring that menstrual blood enters the flow guide core 300 through the protrusions for guidance as soon as possible, thus improving the guidance effect.

[0076] like Figure 1 As shown, in one embodiment,

[0077] The dimensions of the auxiliary diffusion layer 120, the flow guiding layer 130, the water-repellent surface layer 140, and the absorbent core 200 are compatible.

[0078] In this embodiment, the auxiliary diffusion layer 120, the diversion layer 130, the water-repellent surface layer 140, and the absorbent core 200 are stacked and bonded on the breathable bottom film 110. When worn, the breathable bottom film 110 fits snugly against the underwear. Therefore, the area of ​​the breathable bottom film 110 is larger than that of the auxiliary diffusion layer 120, the diversion layer 130, the water-repellent surface layer 140, and the absorbent core 200, so as to facilitate the wearing of the sanitary napkin.

[0079] The functions of each module in each device of this utility model embodiment can be found in the corresponding description in the above method, and will not be repeated here.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0082] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A type of sanitary napkin with drainage function, characterized in that, include: Basic components; An absorbent core is disposed within the base layer assembly, and the absorbent core has grooves. A flow guide core is embedded in the groove. The flow guide core absorbs menstrual blood and guides the menstrual blood into the absorption core.

2. The sanitary napkin according to claim 1, characterized in that, The flow guide core is made of air-core knitted fabric, and the shape of the flow guide core is adapted to the groove.

3. The sanitary napkin according to claim 1, characterized in that, The base component includes: Breathable bottom membrane; An auxiliary diffusion layer is disposed on the breathable bottom membrane. The absorbent core and the guide core are both attached to the side of the auxiliary diffusion layer away from the breathable bottom membrane. Menstrual blood in the guide core diffuses longitudinally through the auxiliary diffusion layer. A flow guiding layer is disposed on the side of the absorber core away from the auxiliary diffusion layer; A water-repellent surface layer is disposed on the side of the guide layer away from the absorbent core.

4. A sanitary napkin for drainage according to claim 3, characterized in that, The base component also includes: The water-repellent side panel has protective wings on the breathable bottom membrane, and the water-repellent side panel is disposed on the protective wings.

5. A sanitary napkin according to claim 3, characterized in that, The water-repellent surface layer has several through holes, the size of which is 8 to 12 mesh.

6. A sanitary napkin according to claim 1, characterized in that, The flow guide core has a protrusion that is higher than the surface of the groove.

7. A sanitary napkin according to claim 3, characterized in that, The dimensions of the auxiliary diffusion layer, the flow guiding layer, the water-repellent surface layer, and the absorbent core are matched.

8. A sanitary napkin according to claim 3, characterized in that, The guide layer is made of hydrophilic hot air nonwoven fabric with a fiber thickness of 2 to 6 denier.

9. A sanitary napkin according to claim 3, characterized in that, The auxiliary diffusion layer is a dust-free paper that does not contain superabsorbent polymer.

10. A sanitary napkin for drainage according to claim 3, characterized in that, The breathable bottom membrane is a PE breathable membrane.

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