Knitted fabric sanitary towel

Abstract

The knitted fabric sanitary napkin comprises a surface layer, an absorption layer and a bottom layer, the absorption layer comprises a first absorption core and a second absorption core, the first absorption core is closer to the surface layer relative to the second absorption core, a waterproof film is fixedly bonded between the first absorption core and a flow guide layer, a through hole is formed in the first absorption core, and the bottom layer is provided with a through hole. The through holes are mainly processed through a hole ironing process, flow guide holes communicated with the through holes are formed in the surface layer, and a waterproof mold is arranged between the first absorption core and the second surface layer. The through hole is formed in the first absorption core of the sanitary towel, and the inner wall of the through hole is coked through hole scalding, so that the body fluid absorption efficiency of the inner wall of the through hole is reduced. In order to guide the body fluid to be better distributed, flow guide holes connected with the through holes are also formed in the flow guide layer, the body fluid is effectively guided to the second absorption core, and the better absorption and flow distribution effects are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sanitary napkins, in particular to a knitted fabric sanitary napkin. Background Art

[0002] In recent years, as people pay more and more attention to human health and environmental protection, the exploration of new environmentally friendly, comfortable and safe sanitary products has attracted much attention. Among them, knitted fabrics have become a new type of sanitary napkin material that has attracted much attention due to their good air permeability, moisture absorption and comfort.

[0003] Although knitted sanitary napkins are more suitable for women to use safely, it should be noted that women's immunity is low during menstruation, which makes women susceptible to bacterial infection during menstruation. After the sanitary napkin absorbs liquid, the human body moves and easily squeezes the sanitary napkin, which will cause liquid reverse osmosis, making the place where the sanitary napkin touches the skin moist, which is easy to cause bacterial growth. Summary of the invention

[0004] In order to solve at least one of the technical problems mentioned in the background technology, the object of the present invention is to provide a knitted fabric sanitary napkin to reduce reverse osmosis of the sanitary napkin.

[0005] To achieve the above object, the present invention provides the following technical solution: a knitted sanitary napkin, comprising: Surface layer; the side in contact with the skin; The absorption layer comprises a first absorption core and a second absorption core, wherein the first absorption core is closer to the surface layer than the second absorption core, a water-isolating film is fixedly bonded between the first absorption core and the guide layer, a through hole is provided on the first absorption core, the through hole is mainly processed by a perforation process, a guide hole connected to the through hole is provided on the surface layer, and a water-isolating mold is provided between the first absorption core and the surface layer; The bottom layer is waterproof.

[0006] Furthermore, a first absorbent cotton layer is fixedly mounted on the second absorbent core, and a wool column passing through the through hole and the guide hole is arranged on the first absorbent cotton layer, wherein the wool column is composed of a plurality of filamentous cotton threads.

[0007] Furthermore, the first absorbent cotton layer is located in the middle of the second absorbent core.

[0008] Furthermore, the fiber pores of the first absorbent core are smaller than the fiber pores of the second absorbent core.

[0009] Furthermore, a second absorbent cotton layer is provided on the bottom wall of the guide groove, and two ends of the wool column are respectively connected to the first absorbent cotton layer and the second absorbent cotton layer.

[0010] Furthermore, the first absorbent core is larger than the second absorbent core, and the first absorbent core is of a cover type, and is disposed on the second absorbent core.

[0011] Furthermore, the surface layer is a guide layer, and the guide layer is provided with guide grooves along its length direction.

[0012] Furthermore, the guide groove is located in the middle of the guide layer, and both ends of the guide groove are arc-shaped.

[0013] Furthermore, an intercepting groove is provided on the guide layer and outside the guide groove, and a waterproof membrane is provided on the inner wall of the intercepting groove.

[0014] Furthermore, the surface layer is a guide layer.

[0015] Compared with the prior art, the beneficial effects of the present invention are: by opening a through hole on the first absorbent core of the sanitary napkin, and using the hot hole processing to make the inner wall of the through hole coke, the absorption efficiency of the inner wall of the through hole to the body fluid is reduced. In order to guide the body fluid to be better distributed, a guide hole connected to the through hole is also set inside the guide layer, which effectively guides the body fluid to the second absorbent core to achieve better absorption and diversion effects, and prevent the liquid from flowing back to the outer layer. At the same time, due to the coking of the inner wall of the through hole, the body fluid cannot be absorbed. Before the second absorbent core is fully absorbed, the first absorbent core will absorb a small amount of body fluid or even no body fluid, so that when the first absorbent core is not fully absorbed, reverse osmosis will not occur. After the second absorbent core is pressurized, the squeezed liquid will be absorbed by the first absorbent core, reducing reverse osmosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the entire structural hierarchy of the present invention; Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram of the structure at point A in the middle.

[0017] In the figure: 1, surface layer; 2, absorption layer; 21, first absorption core; 22, second absorption core; 23, water-proof membrane; 24, through hole; 25, guide hole; 3, bottom layer; 4, guide groove; 5, intercepting groove; 6, first absorption cotton layer; 7, wool column; 8, second absorption cotton layer. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 and Figure 2This embodiment provides a knitted sanitary napkin, including a surface layer 1, the surface layer 1 is a guide layer, an absorption layer 2 and a bottom layer 3, wherein the surface layer 1 is close to the skin, and the guide layer, the absorption layer and the bottom layer 3 are arranged in sequence.

[0020] The bottom layer 3 has excellent waterproof performance, which can effectively prevent leakage and is safer and more reliable; at the same time, the waterproof layer also has good air permeability, keeping the genitals dry and ventilated, and improving the user's wearing comfort and hygiene experience.

[0021] The surface layer 1 is made of pure cotton, which is less irritating to the skin. The pure cotton material is soft, permeates water quickly, and has a dry and comfortable surface, which provides a better user experience. The guide layer is provided with guide grooves 4 along its length. The guide grooves 4 increase the temporary liquid storage capacity of the sanitary napkin and reduce the extravasation of body fluids. On the other hand, the guide grooves increase the contact area between the surface of the guide layer and the body fluids, absorb the body fluids more efficiently, and reduce the extravasation of body fluids.

[0022] See also Figure 1 , wherein the guide groove 4 is located in the middle of the guide layer, and the two ends of the guide groove 4 are arc-shaped, thereby increasing the contact area of ​​the guide groove 4, and the conduction efficiency of transferring the body fluid to the absorption layer 2 below is higher. In order to reduce the body fluid in the guide groove 4 from penetrating through the inner wall of the guide groove 4 to the outside of the guide layer, an intercepting groove 5 is provided on the guide layer and located at the periphery of the guide groove 4, and a waterproof film is provided on the inner wall of the intercepting groove 5. When the liquid in the guide groove 4 penetrates along the inner wall of the guide groove 4, when it penetrates to the side wall of the intercepting groove 5, it will be blocked by the waterproof film on the side wall of the intercepting groove 5, thereby reducing the body fluid from penetrating to the outside of the guide layer. At the same time, the waterproof film has a certain plasticity, which effectively improves the anti-deformation ability of the sanitary napkin, so that the shape of the sanitary napkin is more stable and more fit to the body during use, and avoids the problem of water leakage caused by pressure deformation, thereby improving the comfort and use effect of the sanitary napkin.

[0023] The guide layer is a layer soaked in antibacterial stock solution, which can effectively inhibit bacterial growth, keep the genitals clean and hygienic, reduce the risk of gynecological infections, and improve the comfort and safety of using the product.

[0024] See also Figure 2 and Figure 3 , wherein the absorption layer 2 includes a first absorption core 21 and a second absorption core 22, wherein the first absorption core 21 is closer to the guide layer than the second absorption core 22, and a water-isolating film 23 is fixedly bonded between the first absorption core 21 and the guide layer, and a through hole 24 is provided on the first absorption core 21, wherein the through hole 24 is mainly formed by perforation processing, so that the inner wall of the through hole 24 is coked, and it is difficult for moisture to be absorbed by the coked inner wall of the through hole 24, so that the inner wall of the through hole 24 has a low absorption efficiency for body fluids, and a guide hole 25 connected to the through hole 24 is provided on the guide layer and located on the inner wall of the guide groove 4.

[0025] See also Figure 2 and Figure 3 , by opening a through hole 24 on the first absorbent core 21 of the sanitary napkin, and using the hot hole processing to make the inner wall of the through hole 24 coke, thereby reducing the absorption efficiency of the inner wall of the through hole 24 to the body fluid. In order to guide the body fluid to be better distributed, a guide hole 25 connected to the through hole 24 is also set inside the guide layer to effectively guide the body fluid to the second absorbent core 22, achieving better absorption and diversion effects, and preventing the liquid from flowing back to the outer layer. At the same time, the slower absorption of the first absorbent core 21 can reduce the contact between the reverse osmosis liquid and the skin, reducing the risk of infection.

[0026] To improve the absorption efficiency of the second absorption core 22, a first absorption cotton layer 6 is fixedly mounted on the second absorption core 22, and a hair column 7 passing through the through hole 24 and the guide hole 25 is arranged on the first absorption cotton layer 6, wherein the hair column 7 is composed of a plurality of filamentous cotton threads. The hair column 7 is used to quickly drain the body fluid in the guide groove, thereby improving the absorption efficiency of the body fluid to the absorption layer 2, and its main principle is the capillary phenomenon.

[0027] By fixing and installing the first absorbent cotton layer 6 with the hair column 7 on the second absorbent core 22, its absorption efficiency is effectively improved. The hair column 7 is composed of a plurality of filamentous cotton threads, which penetrate through the through hole 24 and the guide hole 25 to form an interconnected guide network, and transfer the body fluid in the guide groove 4 to the second absorbent core 22, thereby achieving a more efficient absorption effect.

[0028] Capillary phenomenon: refers to the phenomenon that wetting liquids rise in a capillary tube and non-wetting liquids fall in a capillary tube. This phenomenon is caused by surface tension. When the cohesive force between liquid molecules and the adhesive force between liquid molecules and solid molecules interact, the liquid level rises or falls.

[0029] In order to further improve the absorption efficiency of the absorbent cotton, a second absorbent cotton layer 8 is provided on the bottom wall of the guide groove 4, and the two ends of the wool column 7 are connected to the first absorbent cotton layer 6 and the second absorbent cotton layer 8 respectively.

[0030] The second absorbent cotton layer 8 quickly absorbs the body fluid in the liquid guiding groove, and then transfers it to the wool column 7, and the body fluid is guided through the wool column 7.

[0031] See also Figure 2, wherein the first absorbent cotton layer 6 is located in the middle of the second absorbent core 22. The first absorbent cotton layer 6 is set in the middle of the second absorbent core 22. When the wool column 7 absorbs and transfers the body fluid in the guide groove 4 to the first absorbent cotton layer 6, the surface layer 1 evenly diffuses the body fluid into the second absorbent core 22 and is gradually absorbed by the second absorbent core 22. Under the action of gravity, most of the liquid absorbed by the first absorbent cotton layer 6 will be absorbed by the lower half of the second absorbent core 22, and the rest will be absorbed by the upper half of the second absorbent core 22. After the lower half of the second absorbent core 22 is saturated with absorption, the excess body fluid will be completely absorbed by the upper half of the second absorbent core 22, until the upper half of the second absorbent core 22 is also fully absorbed, and then the side of the second absorbent core 22 close to the first absorbent core 21 will penetrate the body fluid into the first absorbent core 21, thereby being absorbed by the first absorbent core 21; That is, before the second absorbent core 22 is fully absorbed, the first absorbent core 21 will absorb a small amount of body fluid or even no body fluid, so that when the first absorbent core 21 is not fully absorbed, reverse osmosis will not occur because after the second absorbent core 22 is pressurized, the squeezed liquid will be absorbed by the first absorbent core 21.

[0032] After the second absorbent core 22 is fully absorbed, the first absorbent core 21 can efficiently absorb the permeated liquid of the second absorbent core 22. The fiber pores of the first absorbent core 21 are smaller than those of the second absorbent core 22, so that a differential capillary effect can be formed, that is, the additional pressure in the fiber net with small pores is small, and the additional pressure in the fiber net with large pores is large. The pressure difference between the first absorbent core 21 and the second absorbent core 22 causes the liquid to flow in a directional manner, that is, from the gap with high pressure to the gap with low pressure; in this way, after the second absorbent core 22 is saturated, the permeated body fluid will overcome gravity and flow in the direction of the first absorbent core 21, thereby improving the water absorption efficiency of the first absorbent core 21 to the permeated body fluid of the second absorbent core 22.

[0033] It is worth noting that the first absorbent core 21 is larger than the second absorbent core 22. The first absorbent core 21 is a cover type, which is covered on the second absorbent core 22, so that the body fluid permeated by the second absorbent core 22 will be absorbed by the first absorbent core 21 to reduce extravasation, and the bottom layer 3 is larger than the first absorbent core 21, thereby preventing liquid extravasation.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A knitted sanitary napkin, characterized in that: include: Surface layer (1); the side in contact with the skin; Absorbent layer (2); The invention comprises a first absorbent core (21) and a second absorbent core (22), wherein the first absorbent core (21) is closer to the surface layer (1) than the second absorbent core (22), a water-isolating film (23) is fixedly bonded between the first absorbent core (21) and the guide layer, a through hole (24) is provided on the first absorbent core (21), and the through hole (24) is mainly formed by a perforation process, a guide hole (25) connected to the through hole (24) is provided on the surface layer (1), and a water-isolating mold is provided between the first absorbent core (21) and the second surface layer (1); The bottom layer (3) is waterproof.

2. The knitted fabric sanitary napkin according to claim 1, characterized in that: The surface layer (1) is a guide layer, and the guide layer is provided with guide grooves (4) along its length direction.

3. The knitted fabric sanitary napkin according to claim 2, characterized in that: A first absorbent cotton layer (6) is fixedly mounted on the second absorbent core (22), and a wool column (7) passing through the through hole (24) and the guide hole (25) is provided on the first absorbent cotton layer (6), wherein the wool column (7) is composed of a plurality of filamentous cotton threads.

4. The knitted fabric sanitary napkin according to claim 1, characterized in that: The first absorbent cotton layer (6) is located in the middle of the second absorbent core (22).

5. The knitted fabric sanitary napkin according to claim 1, characterized in that: The fiber pores of the first absorbent core (21) are smaller than the fiber pores of the second absorbent core (22).

6. The knitted fabric sanitary napkin according to claim 3, characterized in that: The bottom wall of the guide groove (4) is provided with a second absorbent cotton layer (8), and the two ends of the wool column (7) are respectively connected to the first absorbent cotton layer (6) and the second absorbent cotton layer (8).

7. The knitted fabric sanitary napkin according to claim 1, characterized in that: The first absorbent core (21) is larger than the second absorbent core (22); the first absorbent core (21) is of a cover type and is arranged on the second absorbent core (22).

8. The knitted fabric sanitary napkin according to claim 2, characterized in that: The guide groove (4) is located in the middle of the guide layer, and both ends of the guide groove (4) are arc-shaped.

9. The knitted fabric sanitary napkin according to claim 2, characterized in that: An intercepting groove (5) is provided on the guide layer and located outside the guide groove (4), and a waterproof membrane is provided on the inner wall of the intercepting groove (5).

Images