Sanitary towel capable of preventing rear leakage
By adopting a double-layer leak-proof film structure and a specific combination design at the back end of the sanitary napkin, the problem of leakage caused by the deformation of the single-layer film is solved, achieving more efficient leak-proof effect and use safety.
Patent Information
- Application Number
- CN202421508652.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing sanitary napkins add a single layer of leak-proof film at the back end, which is prone to deformation and collapse due to softness and body compression, causing menstrual bleeding to leak out from the back end.
A sanitary napkin to prevent back leakage was designed, and a double-layer leakage-proof film structure was adopted. By guiding the combination of embossing, reinforcement, first connecting film, suture layer and second adhesive layer, a more stable leakage-proof film structure was formed to increase its three-dimensional strength.
This design makes the leak-proof film better fit the body and is not easily compressed and deformed, significantly improving the leak-proof effect and ensuring the safety and comfort of the sanitary napkin when used.
Smart Images

Figure CN222899488U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sanitary napkins, in particular to a sanitary napkin capable of preventing back leakage. Background Art
[0002] A sanitary napkin is a female personal hygiene product used to absorb and prevent menstrual bleeding from soiling underwear. It usually has a sticky back that can be easily attached to underwear to keep it stable during activities.
[0003] In order to prevent leakage from the back, the existing sanitary napkins usually add a circle of leak-proof film with water absorption and breathability function at the rear end of the sanitary napkin body. However, this film is usually a single-layer film. When used, it will be deformed and collapsed due to its own softness and body pressure, so that menstrual blood will still leak from the rear end. Therefore, it is necessary to provide a sanitary napkin that prevents leakage from the back to ensure the safety and comfort of the sanitary napkin when used. Utility Model Content
[0004] The utility model aims to provide a sanitary napkin that prevents back leakage, so as to solve the problem raised in the above-mentioned background technology that, in order to prevent back leakage, the existing sanitary napkins usually add a circle of leak-proof film with water absorption and breathable function at the rear end of the sanitary napkin body, but this kind of film is usually a single-layer film, and when used, it will be deformed and collapsed due to its own soft characteristics and body pressure, so that menstrual bleeding will still leak from the rear end.
[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0006] The utility model is a sanitary napkin for preventing back leakage, comprising:
[0007] A main body component, the main body component comprising a sanitary napkin body;
[0008] A leak-proof component, the leak-proof component comprising an index embossing, a leak-proof film, a reinforcing pattern, a first connecting film, a stitching layer, and a second adhesive layer;
[0009] There are two guide embossments, which are pressed on the rear end of the sanitary napkin body. The suture layer is sewn on the rear side of the sanitary napkin body and is located at one end of the guide embossment. There are two first connecting films pressed on both ends of the leakage-proof film, one of which is sewn on the upper surface of the suture layer. The second viscose layer is coated on the lower surface of the leakage-proof film and fits tightly with the suture layer. The reinforcement pattern is pressed on the leakage-proof film and is evenly distributed.
[0010] Furthermore, there are two groups of the stitching layer and the corresponding leakage-proof film, which are respectively located on both sides of the rear end of the sanitary napkin body.
[0011] Furthermore, the leakproof film is made of a water-absorbent and breathable material and has an accordion-like structure.
[0012] Furthermore, the main body assembly also includes leak-proof embossing and edge films;
[0013] The anti-leakage embossing pattern is pressed on the middle part of the sanitary napkin body, and the edge film is wrapped around the sanitary napkin body.
[0014] Furthermore, the main body assembly also includes a first water absorbing layer and a thickened water absorbing layer;
[0015] The first water-absorbing layer is filled in the sanitary napkin body, and the thickened water-absorbing layer is filled in the sanitary napkin body and is located at the rear end of the upper surface of the first water-absorbing layer.
[0016] Furthermore, the main body assembly also includes side wings, a tail wing and a first adhesive layer;
[0017] The side wings are integrally formed and connected to both sides of the middle part of the edge film, the tail wings are integrally formed and connected to both sides of the rear end of the edge film, and the first adhesive layer is printed on.
[0018] Further, it also includes a splicing assembly;
[0019] The splicing assembly includes a second connecting film and a third adhesive layer;
[0020] The second connecting film is sewn on the lower surface of the rear end of the edge film and is located in the middle of the tail wing. The third adhesive layer is printed on the upper surface of the second connecting film at one end away from the edge film.
[0021] Furthermore, the outer surfaces of the first adhesive layer, the second adhesive layer and the third adhesive layer are all covered with a layer of smooth backing paper.
[0022] Compared with the prior art, the advantages of the present invention are:
[0023] 1. The utility model has a leak-proof component. When in use, first tear off the backing paper on the second adhesive layer on the side of the sewing layer at the lower end of the two sets of leak-proof films, follow the embossing pattern, and stick the second adhesive layer to the rear end of the sanitary napkin body. The first connecting film plays a supporting role, and the reinforcing pattern can increase the three-dimensional strength of the leak-proof film. The two sets of leak-proof films are arc-shaped and located at the rear end of the sanitary napkin body. This arrangement can make the leak-proof film better fit the body without being deformed by pressure, and can increase the leak-proof effect.
[0024] 2. The utility model has a splicing assembly, and when the sanitary napkin body is used at night, the sanitary napkin body is shorter, and a piece of sanitary napkin body can be glued to the rear end of the sanitary napkin body, and the third adhesive layer backing paper on the second connecting film can be torn off, and the third adhesive layer can be attached to the bottom of the sanitary napkin body at the rear end. At this time, the two groups of leak-proof films on the front end of the sanitary napkin body can be attached to the sides of the two groups of sanitary napkin bodies, and the two groups of leak-proof films on the rear end of the sanitary napkin body can be attached to the rear end of the sanitary napkin body in an arc shape. This arrangement can avoid leakage on both sides and the rear end of the sanitary napkin body, and can also increase the safety of nighttime use. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for describing the embodiment;
[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0027] Figure 2 It is a bottom view of the utility model;
[0028] Figure 3 This is a schematic diagram of the main component structure of the utility model;
[0029] Figure 4 This is a schematic diagram of the leak-proof film of the utility model after bending;
[0030] Figure 5 It is a partial structural schematic diagram of the leak-proof component of the utility model;
[0031] Figure 6 It is a side view of the leak-proof film of the utility model.
[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0033] 10. sanitary napkin body; 11. leak-proof embossing; 12. first water-absorbing layer; 13. thickened water-absorbing layer; 14. edge film; 15. side wings; 16. tail wings; 17. first viscose layer; 20. guiding embossing; 21. leak-proof film; 22. reinforcing pattern; 23. first connecting film; 24. stitching layer; 25. second viscose layer; 30. second connecting film; 31. third viscose layer. DETAILED DESCRIPTION
[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.
[0035] See also Figure 1-6 The present embodiment is a sanitary napkin for preventing back leakage, comprising:
[0036] A main body component, the main body component includes a sanitary napkin body 10;
[0037] The sanitary napkin body 10 plays a supporting role;
[0038] The leak-proof component includes an index embossing 20, a leak-proof film 21, a reinforcing pattern 22, a first connecting film 23, a stitching layer 24 and a second adhesive layer 25;
[0039] There are two guiding embossings 20, which are pressed on the rear end of the sanitary napkin body 10. The suture layer 24 is sewed on the rear side of the sanitary napkin body 10 and is located at one end of the guiding embossing 20. There are two first connecting films 23 pressed on both ends of the leakproof film 21, one of which is sewn on the upper surface of the suture layer 24. The second adhesive layer 25 is applied on the lower surface of the leakproof film 21 and is tightly attached to the suture layer 24. The reinforcing pattern 22 is pressed on the leakproof film 21 and is evenly distributed.
[0040] The indexing embossing 20 plays an indicating role, the leakproof film 21 plays a leakproof role, the reinforcing pattern 22 plays a reinforcing role, the first connecting film 23 plays a supporting role, the sewing layer 24 plays a connecting role, and the second adhesive layer 25 plays a connecting role;
[0041] There are two groups of stitching layers 24 and corresponding leak-proof films 21, which are respectively located on both sides of the rear end of the sanitary napkin body 10;
[0042] Two sets of leak-proof films 21 are provided for reinforcement;
[0043] The leakproof film 21 is made of a water-absorbing and breathable material and has an accordion-like structure;
[0044] The leakproof film 21 has an accordion-like structure and is more stable;
[0045] The main body component also includes a leak-proof embossing 11 and an edge film 14;
[0046] The leak-proof embossing 11 is pressed on the middle of the sanitary napkin body 10, and the edge film 14 is wrapped around the sanitary napkin body 10;
[0047] The leak-proof embossing 11 has a leak-proof effect, which can ensure that menstrual blood will not accumulate too much in a certain place, and the edge film 14 plays a protective role;
[0048] The main body component also includes a first water absorbing layer 12 and a thickened water absorbing layer 13;
[0049] The first water-absorbing layer 12 is filled inside the sanitary napkin body 10, and the thickened water-absorbing layer 13 is filled inside the sanitary napkin body 10 and is located at the rear end of the upper surface of the first water-absorbing layer 12;
[0050] The first water-absorbing layer 12 and the thickened water-absorbing layer 13 absorb blood;
[0051] The main body also includes side wings 15, tail wings 16 and a first adhesive layer 17;
[0052] The side wings 15 are integrally formed and connected to both sides of the middle part of the edge film 14, the tail wings 16 are integrally formed and connected to both sides of the rear end of the edge film 14, and the first adhesive layer 17 is printed thereon;
[0053] The side wings 15 and the tail wings 16 are used to prevent the underwear from being contaminated, and the first viscose layer 17 plays a connecting role;
[0054] The outer surfaces of the first adhesive layer 17 and the second adhesive layer 25 are both covered with a layer of smooth backing paper;
[0055] The smooth backing paper serves as a protection.
[0056] Working principle:
[0057] When in use, first tear off the backing paper on the second adhesive layer 25 on the side of the sewing layer 24 at the lower end of the two sets of leakproof films 21, and stick the second adhesive layer 25 to the rear end of the sanitary napkin body 10 along the embossed pattern 20;
[0058] At this time, the first connecting film 23 props up the leakproof film 21, and the reinforcing pattern 22 can increase the three-dimensional strength of the leakproof film 21. The two sets of leakproof films 21 are located at the rear end of the sanitary napkin body 10 in an arc shape;
[0059] After the backing paper on the first adhesive layer 17 is torn off, the sanitary napkin body 10 is adhered to the underwear, and the side wings 15 and the tail wing 16 are adhered to the outside of the underwear.
[0060] This step can make the leak-proof film 21 fit the body better without being deformed by pressure, thus increasing the leak-proof effect.
[0061] See also Figure 1-2 This embodiment is based on the above embodiment 1 and further includes:
[0062] A splicing assembly, the splicing assembly includes a second connecting film 30 and a third adhesive layer 31;
[0063] The second connecting film 30 is sewn on the lower surface of the rear end of the edge film 14 and is located in the middle of the tail 16. The third adhesive layer 31 is printed on the upper surface of the second connecting film 30 at one end away from the edge film 14.
[0064] The second connecting film 30 plays a connecting role, and the third adhesive layer 31 plays a connecting role;
[0065] The outer surface of the third adhesive layer 31 is covered with a layer of smooth backing paper.
[0066] Working principle:
[0067] When used at night, the sanitary napkin body 10 is relatively short, and a piece of sanitary napkin body 10 can be glued to the rear end of the sanitary napkin body 10, and the backing paper of the third adhesive layer 31 on the second connecting film 30 is torn off, and the third adhesive layer 31 is attached to the lower part of the rear sanitary napkin body 10 to prevent blood from leaking from the splicing piece;
[0068] At this time, the two sets of leakage-proof films 21 on the front end of the sanitary napkin body 10 can be pasted on the sides of the two sets of sanitary napkin bodies 10, and the two sets of leakage-proof films 21 on the rear end of the sanitary napkin body 10 can be pasted on the rear end of the sanitary napkin body 10 to form an arc shape.
[0069] This step can prevent leakage from the two sides and the rear end of the sanitary napkin body 10, and can also temporarily increase the safety of nighttime use when a longer sanitary napkin is not available.
[0070] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A sanitary napkin for preventing back leakage, characterized in that: include: A main body component, the main body component comprising a sanitary napkin body (10); A leak-proof component, the leak-proof component comprising an indexing embossing (20), a leak-proof film (21), a reinforcing pattern (22), a first connecting film (23), a stitching layer (24), and a second adhesive layer (25); The guiding embossing (20) has two portions, which are pressed on the rear end of the sanitary napkin body (10); the sewing layer (24) is sewn on the rear side of the sanitary napkin body (10) and is located at one end of the guiding embossing (20); two pieces of the first connecting film (23) are pressed on both ends of the leakproof film (21), one of the first connecting films (23) is sewn on the upper surface of the sewing layer (24); the second adhesive layer (25) is applied on the lower surface of the leakproof film (21) and is tightly attached to the sewing layer (24); and the reinforcing pattern (22) is pressed on the leakproof film (21) and is evenly distributed.
2. A sanitary napkin for preventing back leakage according to claim 1, characterized in that: There are two groups of the stitching layer (24) and the corresponding leakage-proof film (21), which are respectively located on both sides of the rear end of the sanitary napkin body (10).
3. A sanitary napkin for preventing back leakage according to claim 1, characterized in that: The leakproof film (21) is made of a water-absorbing and breathable material and has an accordion-like structure.
4. A sanitary napkin for preventing back leakage according to claim 1, characterized in that: The main body component further comprises a leak-proof embossing (11) and an edge film (14); The anti-leakage embossing (11) is pressed in the middle of the sanitary napkin body (10), and the edge film (14) is wrapped around the sanitary napkin body (10).
5. A sanitary napkin for preventing back leakage according to claim 1, characterized in that: The main body component also includes a first water absorbing layer (12) and a thickened water absorbing layer (13); The first water-absorbing layer (12) is filled inside the sanitary napkin body (10), and the thickened water-absorbing layer (13) is filled inside the sanitary napkin body (10) and is located at the rear end of the upper surface of the first water-absorbing layer (12).
6. A sanitary napkin for preventing back leakage according to claim 4, characterized in that: The main body assembly further comprises side wings (15), a tail wing (16) and a first adhesive layer (17); The side wings (15) are integrally formed and connected to both sides of the middle part of the edge film (14), the tail wings (16) are integrally formed and connected to both sides of the rear end of the edge film (14), and the first adhesive layer (17) is printed thereon.
7. A sanitary napkin for preventing back leakage according to claim 4, characterized in that: Also includes splicing components; The splicing assembly comprises a second connecting film (30) and a third adhesive layer (31); The second connecting film (30) is sewn onto the lower surface of the rear end of the edge film (14) and is located in the middle of the tail wing (16), and the third adhesive layer (31) is printed on the upper surface of the second connecting film (30) at an end away from the edge film (14).
8. A sanitary napkin for preventing back leakage according to claim 6, characterized in that: The outer surfaces of the first adhesive layer (17), the second adhesive layer (25) and the third adhesive layer (31) are all covered with a layer of smooth backing paper.