Double side leakage prevention sanitary towel

Abstract

The utility model discloses a double anti-side-leakage sanitary napkin which comprises a sanitary napkin body and sanitary napkin side wings, the sanitary napkin side wings are symmetrically attached to the two sides of the sanitary napkin body, and the sides, close to the sanitary napkin body, of the sanitary napkin side wings are folded inwards to form double anti-leakage side edges in an inverted M shape. The double leakage-proof side edge part is adhered to the edge of the core body in the sanitary towel main body, and the non-adhered movable part forms a movable leakage-proof side edge. The double-side inverted M-shaped leakage-proof side edge is formed through folding and compounding, the height is high, the double-layer leakage-proof effect can be achieved, and the side leakage phenomenon is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of feminine hygiene products, and in particular to a double-layer anti-leakage sanitary napkin. Background Technology

[0002] Sanitary napkins generally consist of a top layer, a diversion layer, an absorbent core, a bottom layer, and side wings. The top layer is often made of cotton or non-woven fabric, which is soft and skin-friendly, quickly absorbing liquid and keeping the wearer dry. The diversion layer is made of materials with good diversion properties, which can quickly guide liquid to the absorbent core, increasing the absorption area. The absorbent core is the core part, usually made of fluff pulp and superabsorbent polymer, which can absorb and store a large amount of menstrual blood and prevent backflow. The bottom layer is a breathable membrane with many micropores, which prevents leakage while ensuring breathability. The side wings are often made of water-repellent non-woven fabric and are fixed to the underwear by adhesive or other methods to prevent menstrual blood from flowing out from the sides. Some also have a three-dimensional protective design to better fit the body's curves and prevent side leakage.

[0003] Most sanitary napkins currently on the market use ordinary white SMS non-stick water-repellent fabric or hot-air water-repellent fabric attached to the surface layer for their side wings. While these ordinary water-repellent fabrics offer some water repellency, they are not completely leak-proof. In actual use, leakage often occurs, causing stains on clothing and great inconvenience to users. Furthermore, limited by the manufacturing process and cost considerations of ordinary water-repellent fabrics, their design is relatively simple. This monotonous style fails to enhance the overall aesthetic appeal of the sanitary napkin and does not meet users' aesthetic needs. Additionally, the leak-proof sides of sanitary napkins often use a folded edge of about 1-2mm. During heavy menstrual flow or surging periods, menstrual blood can still leak horizontally, staining clothes and causing an extremely embarrassing and inconvenient experience for users. Utility Model Content

[0004] To address the above problems, this utility model provides a double-layer anti-leakage sanitary napkin that offers high comfort and prevents side leakage.

[0005] This utility model is implemented as follows: A dual-layer leak-proof sanitary napkin includes a sanitary napkin body and sanitary napkin side wings. The sanitary napkin body includes, from top to bottom, a surface layer, a core, a bottom film, and an adhesive backing. The sanitary napkin side wings are symmetrically attached to both sides of the sanitary napkin body. The side of the sanitary napkin side wing closest to the core of the sanitary napkin body is folded and then bonded together with the surface layer. The folded portion forms a dual-layer leak-proof side with two layers distributed on the top and bottom. The dual-layer leak-proof side wing can be divided into a fixed leak-proof side wing and a movable leak-proof side wing. The fixed leak-proof side wing is connected to the surface layer.

[0006] Furthermore, the sanitary napkin's side wings include water-repellent ES fibers and a PE film, which are sequentially laminated together from top to bottom.

[0007] Furthermore, two double leak-proof sides are symmetrically arranged relative to the center point of the sanitary napkin body.

[0008] Furthermore, the length of the double leak-proof side is equal to the length of the surface layer.

[0009] Furthermore, the width of the active leak-proof side is 1mm-8mm.

[0010] Furthermore, the PE membrane is an air-permeable but liquid-impermeable PE membrane.

[0011] Furthermore, after the surface layer is combined with the core, the entire assembly is rolled by a guide roller to form a guide groove.

[0012] Furthermore, the double leak-proof side has an inverted M shape and the upper and lower leak-proof side have the same width.

[0013] Furthermore, the double leak-proof side is shaped like an inverted M, with the upper leak-proof side being narrower and the lower leak-proof side being wider, forming an overall stepped shape.

[0014] The beneficial effects of this invention are as follows: Water-repellent, ultra-soft ES fibers are covered with a breathable, liquid-impermeable PE film, which is then folded and composited to form a double-leaking side edge in an inverted M shape. This double-leaking side edge has a high height, providing double-layer leak protection and effectively preventing side leakage, thus handling heavy flow and surges. The PE film is liquid-impermeable, overcoming the shortcomings of ordinary water-repellent fabric side wings that cannot completely repel water and prevent leakage. Furthermore, it allows for easier display of colors and patterns, enhancing the visual appeal of the sanitary napkin and improving user comfort and enjoyment.

[0015] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a front view of the utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention (AA).

[0018] Figure 3 This is an exploded view of the structure of this utility model;

[0019] Figure 4 This is a partially enlarged cross-sectional view of the side wing of the sanitary napkin of this utility model.

[0020] In the diagram: sanitary napkin body 10, sanitary napkin side wings 20, adhesive backing 1, bottom film 2, core 3, water-repellent ES fiber 4, PE film 5, surface layer 6, double leak-proof side 7, structural adhesive 8, fixed leak-proof side 71, movable leak-proof side 72. Detailed Implementation

[0021] Example 1;

[0022] A type of double-layer leak-proof sanitary napkin, such as Figures 1-4 As shown, the sanitary napkin includes a main body 10 and side wings 20. The side wings 20 are symmetrically attached to both sides of the main body 10. The main body includes a surface layer 6, a core 3, a bottom film 2, and an adhesive backing 1, which are sequentially bonded together from top to bottom. The side wings 20 include water-repellent ES fibers 4 and a PE film 5, which are sequentially laminated together from top to bottom. The PE film 5 of the side wings 20 is bonded to the bottom film 2 of the main body 10. The water-repellent ES fiber 4 and PE film 5 are folded inward three times on the side near the core 3 of the sanitary napkin body 10 to form a double leak-proof side 7 with a sideways M-shape and a double water-blocking structure. The upper and lower leak-proof side layers of the sideways M-shape have the same width. The double leak-proof side 7 is bonded to the surface layer 6. The double leak-proof side 7 can be divided into a fixed leak-proof side 71 and a movable leak-proof side 72. The fixed leak-proof side 71 is connected to the surface layer 6 by structural adhesive or by ultrasonic bonding or hot rolling bonding processes. The connection position is as follows: Figure 3 The dashed section is shown as structural adhesive 8.

[0023] Two of the double leak-proof sides 7 are symmetrically arranged relative to the center point of the sanitary napkin body 10.

[0024] The length of the double leak-proof side 7 is equal to the length of the surface layer 6.

[0025] The double leak-proof side 7 is shaped like an inverted M, and the upper and lower leak-proof sides have the same width.

[0026] The width of the active leak-proof side 72 is 1mm-8mm.

[0027] The PE membrane 5 is an air-permeable but liquid-impermeable PE membrane.

[0028] After the surface layer 6 is combined with the core 3, the whole is rolled by a guide roller to form a guide groove.

[0029] The folded, side-mounted M-shaped double leak-proof side of this embodiment has a height of 2 to 5 millimeters. In cases of heavy menstrual flow, the first layer of the double leak-proof side 7 effectively blocks the flow. When liquid or blood is blocked by the first layer, pressure causes it to seep into the bottom of the movable leak-proof side 72, raising it to a certain height. This height is sufficient to stop the liquid under normal circumstances, allowing it to flow within the sanitary napkin, thus providing initial physical blocking. If the menstrual flow is particularly heavy, exceeding the first layer, the second layer of the double leak-proof side 7 will completely block it. Simultaneously, the double leak-proof side 7 is tightly connected to the core 3 of the sanitary napkin body 10, allowing liquid or blood to easily permeate from the double leak-proof side 7 through the drainage channels of the surface layer 6 into the absorbent core of the body, where it is processed by a larger absorbent area.

[0030] Made of water-repellent, ultra-soft ES fibers covered with a breathable PE membrane, it will not cause discomfort or irritation when in contact with the skin of the groin. It can also effectively prevent menstrual blood from seeping into the sides, providing better protection even during heavy menstrual flow or strenuous activity.

[0031] Example 2;

[0032] This embodiment is another implementation of Embodiment 1. The difference lies in the width of the second leak-proof side, located above the double leak-proof side 7, which is smaller than the width of the first leak-proof side below it. The two sides exhibit a clear gradient difference in width, creating a stepped leak-proof barrier. The longer first lower leak-proof side can initially block and guide menstrual blood, intercepting some of it near the sanitary napkin core. The shorter second upper leak-proof side further blocks menstrual blood that overflows the first leak-proof side, providing secondary protection. This structural design achieves double-layer leak protection and offers significantly better comfort than the first embodiment.

[0033] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Although this utility model has been described in detail with reference to the preferred arrangement, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model (such as the connection method, the shape of each element, etc.) without departing from the spirit and scope of the technical solution of this utility model.

Claims

1. A double-layer anti-leakage sanitary napkin, comprising a sanitary napkin body (10) and sanitary napkin side wings (20), wherein the sanitary napkin body (10) comprises, from top to bottom, a surface layer (6), a core (3), a bottom film (2), and an adhesive backing (1), and the sanitary napkin side wings (20) are symmetrically attached to both sides of the sanitary napkin body (10), characterized in that, The side wing (20) of the sanitary napkin is folded and combined with the surface layer (6) after being close to the core (3) of the sanitary napkin body (10). The folded part forms a double leak-proof side (7) with two layers distributed on the top and bottom. The double leak-proof side (7) includes a fixed leak-proof side (71) and a movable leak-proof side (72). The fixed leak-proof side (71) is connected to the surface layer (6).

2. The double-layer anti-leakage sanitary napkin according to claim 1, characterized in that, The side wings (20) of the sanitary napkin include water-repellent ES fibers (4) and PE film (5), which are sequentially laminated together from top to bottom.

3. The double-layer anti-leakage sanitary napkin according to claim 1, characterized in that, The double leak-proof side (7) is symmetrically provided with two points relative to the center point of the sanitary napkin body (10).

4. The double-layer anti-leakage sanitary napkin according to claim 1, characterized in that, The length of the double leak-proof side (7) is equal to the length of the surface layer (6).

5. The dual-layer anti-leakage sanitary napkin according to claim 1, characterized in that, The width of the active leak-proof side (72) is 1mm-8mm.

6. The dual-layer anti-leakage sanitary napkin according to claim 2, characterized in that, The PE membrane (5) is an air-permeable but liquid-impermeable PE membrane.

7. The double-layer anti-leakage sanitary napkin according to claim 1, characterized in that, After the surface layer (6) is combined with the core (3), the whole is rolled by the guide roller to form a guide groove.

8. The double-layer anti-leakage sanitary napkin according to claim 1, characterized in that, The double leak-proof side (7) presents an inverted M shape and the upper and lower leak-proof side has the same width.

9. The dual-layer anti-leakage sanitary napkin according to claim 1, characterized in that, The double leak-proof side (7) is in the shape of an inverted M, with the upper leak-proof side being narrower and the lower leak-proof side being wider, forming an overall stepped shape.

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