Integrated coating type side leakage prevention sanitary towel
By incorporating breathable gaps and a waterproof and breathable membrane into the sanitary napkin, combined with a multi-layered structural design, the problem of insufficient breathability in traditional sanitary napkins is solved, achieving high breathability and preventing side leakage, thus improving user comfort and leak-proof performance.
Patent Information
- Application Number
- CN202511546094.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-11-01
- Filing Date
- 2025-10-28
- Publication Date
- 2026-01-02
AI Technical Summary
Traditional sanitary napkins are not breathable enough, especially in hot and humid environments, which can easily cause skin problems and odor. The room for improvement in existing technology is to improve breathability and prevent side leakage.
An integrated, leak-proof sanitary napkin was designed. By setting breathable gaps and a waterproof and breathable membrane in the water-permeable surface layer, combined with a multi-layer structure design, the breathability is improved. The structural stability and leak-proof effect are ensured by inclined transition sections and heat-pressed connections.
It significantly improves the breathability of sanitary napkins, ensuring smooth flow and absorption of menstrual blood, forming a double anti-leakage structure, and enhancing user comfort and leak-proof performance.
Smart Images
Figure CN121242841A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of sanitary napkins, in particular to an integrally coated side leakage prevention sanitary napkin. BACKGROUND
[0002] With the improvement of the awareness of women's physiological health, the market demand for sanitary napkins is increasing. The traditional sanitary napkin has certain deficiencies in terms of air permeability, which often causes discomfort to the wearer. Especially in a hot and humid environment, it may cause skin problems and odor. Developing a sanitary napkin with good air permeability has become a technical problem to be solved.
[0003] Therefore, the application publication number CN105796247A discloses a refreshing and breathable sanitary napkin, which specifically discloses a bottom waterproof layer and an upper water storage layer, the upper water storage layer is arranged above the bottom waterproof layer, a breathable layer is arranged above the upper water storage layer, a soft layer is arranged above the breathable layer, leakage prevention wings are arranged on both sides of the upper water storage layer, the breathable layer is non-woven fabric or mesh cloth, the soft layer is a thin layer of cotton, and the edges of the breathable layer and the soft layer are connected. The bottom of the bottom waterproof layer is provided with a pressure sensitive adhesive sheet, and the bottom of the pressure sensitive adhesive sheet is provided with a release paper. The leakage prevention wings each include water-absorbing cotton, a first waterproof film and a second waterproof film, the water-absorbing cotton is arranged between the first waterproof film and the second waterproof film. The bottoms of the first waterproof film and the second waterproof film are connected with the bottom waterproof layer. The bottom waterproof layer is a waterproof film, and the upper water storage layer is paper pulp or water-absorbing particles.
[0004] However, the above-mentioned refreshing and breathable sanitary napkin still has room for improvement, for example: because the upper water storage layer, the breathable layer and the soft layer are respectively provided with a leakage prevention wing connected with the bottom waterproof layer on both sides, that is, the bottom of the upper water storage layer, the breathable layer and the soft layer is not provided with a breathable gap. But this structure is not good enough in terms of air permeability in actual use.
[0005] Therefore, it is necessary to improve the prior art. SUMMARY
[0006] In view of the problems existing in the prior art, the purpose of the present application is to provide an integrally coated side leakage prevention sanitary napkin, which is provided with a breathable gap, so as to improve the air permeability of the sanitary napkin body, and also facilitates the flow and absorption of menstrual blood.
[0007] In order to achieve the above-mentioned purpose, the technical scheme of the present application is:
[0008] The utility model provides a kind of integrated coating type side leakage prevention sanitary towel, including sanitary towel body;The sanitary towel body includes water-permeable surface layer, absorbent and impermeable bottom layer;The water-permeable surface layer includes first surface layer section, first transition section and second surface layer section connected in turn from top to bottom;First surface layer section inside is equipped with inner cavity and the absorbent is filled in the inner cavity of first surface layer section;The upper end and the lower end of the first transition section are connected with the middle position of the bottom of the first surface layer section and the middle position of the top of the second surface layer section respectively;The width of the second surface layer section is greater than the width of the first surface layer section;First air gap is formed between the bottom surface of the first surface layer section and the top surface of the second surface layer section respectively;Impermeable bottom layer is connected on the bottom surface of the second surface layer section;By setting the first air gap, the air permeability of the sanitary towel body can be improved, and the flow and absorption of menstrual blood can be facilitated.
[0009] Further, the sanitary towel body further includes a waterproof and breathable film;The waterproof and breathable film is matchedly installed in the inner cavity of the first surface layer section;The inner surface of the waterproof and breathable film is connected with the bottom surface and the peripheral side surface of the absorbent, and the outer surface of the waterproof and breathable film is connected with the bottom surface and the peripheral side surface of the inner cavity of the first surface layer section.
[0010] Further, the middle position of the bottom of the first surface layer section is a connecting port;The connecting port extends along the length direction of the sanitary towel body;The first transition section includes a transition left section and a transition right section that are attached to and connected with each other, and the upper end of the transition left section and the upper end of the transition right section are connected with the two sides of the connecting port respectively to seal the connecting port;The second surface layer section includes a first part and a second part that are attached to and connected with each other and correspond to the lower end of the transition left section and the lower end of the transition right section respectively;The first part and the second part are also attached to and connected with each other.
[0011] Further, the transition left section and the transition right section are attached and connected by hot pressing;The first part and the second part of the second surface layer section are also attached and connected by hot pressing.
[0012] Further, the first transition section is inclined.
[0013] Further, the impermeable bottom layer is bonded to the bottom surface of the second surface layer section.
[0014] Further, the front ends of the first surface layer section, the first transition section, the second surface layer section and the impermeable bottom layer are connected by hot pressing correspondingly;The rear ends of the first surface layer section, the first transition section, the second surface layer section and the impermeable bottom layer are also connected by hot pressing correspondingly.
[0015] Further, a pressure-sensitive adhesive sheet is arranged on the bottom surface of the water-impermeable bottom layer, and a release paper is further arranged on the bottom of the pressure-sensitive adhesive sheet.
[0016] Further, the water-permeable surface layer further comprises a third surface layer section and a second transition section; a first opening extending along the length direction of the sanitary napkin body is arranged in the middle of the top of the first surface layer section; an inner cavity is arranged in the third surface layer section, and a second opening extending along the length direction of the sanitary napkin body is arranged in the middle of the bottom of the inner cavity; a channel penetrating from top to bottom is arranged in the middle of the second transition section, and the upper and lower ends of the second transition section are respectively connected to the periphery of the first opening and the periphery of the second opening; the width of the third surface layer section is smaller than the width of the first surface layer section, and second air-permeable gaps are respectively formed between the two sides of the top of the first surface layer section and the two sides of the bottom of the third surface layer section; the width of the second transition section is smaller than the width of the third surface layer section; the absorbent body comprises a first absorbent section, a second absorbent section and a third absorbent section connected in sequence from top to bottom; the first absorbent section is matchedly filled in the inner cavity of the third surface layer section, the second absorbent section is matchedly filled in the channel of the second transition section, and the third absorbent section is matchedly filled in the inner cavity of the first surface layer section.
[0017] The present application has the following advantages:
[0018] (1) The first air-permeable gap 4 can be used to improve the air permeability of the sanitary napkin body, and can also facilitate the flow and absorption of menstrual blood.
[0019] (2) The width of the second surface layer section is greater than the width of the first surface layer section, so that after the absorbent body absorbs a certain amount of menstrual blood, the subsequent or overflow menstrual blood can flow naturally along the surface of the first surface layer section downward until it reaches the position of the first air-permeable gap, so that a certain amount of menstrual blood can be continuously absorbed by the first surface layer section and the second surface layer section above and below the first air-permeable gap, i.e. the first air-permeable gap can facilitate the flow and absorption of menstrual blood, and it also forms a side leakage prevention structure.
[0020] Of course, since the first air-permeable gap separates the first surface layer section and the second surface layer section, the circulation of air can be smoother, i.e. the air permeability of the sanitary napkin body is improved.
[0021] (3) The third surface layer section, the first surface layer section and the second air-permeable gap can be used to make the menstrual blood flow to both sides from the outer surface of the third surface layer section, and the subsequent or overflow menstrual blood can also continue to flow to the first surface layer section as the menstrual blood is absorbed, i.e. this design actually forms two side leakage prevention structures, which has very good use effect. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention. Figure 1 ;
[0023] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention. Figure 2 ;
[0024] Figure 3 yes Figure 2 Cross-sectional view along the middle AA;
[0025] Figure 4 This is a longitudinal cross-sectional view of Embodiment 2 of the present invention;
[0026] Figure 5 This is a schematic diagram of the present invention in use.
[0027] Figure Labels
[0028] 1. Permeable surface layer; 11. First surface layer section; 111. First opening; 12. First transition section; 121. Left transition section; 122. Right transition section; 13. Second surface layer section; 131. First part; 132. Second part; 14. Third surface layer section; 141. Second opening; 15. Second transition section; 151. Channel;
[0029] 2. Absorber; 21. First absorption section; 22. Second absorption section; 23. Third absorption section;
[0030] 3. Impermeable bottom layer;
[0031] 4. First ventilation gap;
[0032] 5. Waterproof and breathable membrane;
[0033] 6. Second ventilation gap. Detailed Implementation
[0034] The invention will be further described below with reference to the accompanying drawings and specific embodiments. The following description is merely exemplary and does not limit the scope of protection of the invention.
[0035] Example 1:
[0036] like Figures 1-3 As shown, an integrated, leak-proof sanitary napkin includes a sanitary napkin body; the sanitary napkin body includes a permeable surface layer 1, an absorbent core 2, and an impermeable bottom layer 3.
[0037] The permeable surface layer 1 includes a first surface layer section 11, a first transition section 12, and a second surface layer section 13 connected sequentially from top to bottom.
[0038] like Figure 3As shown, in the embodiment, the first surface layer section 11 is internally provided with a cavity and the absorbent body 2 is matched and filled in the cavity of the first surface layer section 11; the upper end and the lower end of the first transition section 12 are respectively connected to the middle position of the bottom of the first surface layer section 11 and the middle position of the top of the second surface layer section 13; the width of the second surface layer section 13 is greater than the width of the first surface layer section 11; the first air permeable gap 4 is respectively formed between the bottom surface of the first surface layer section 11 and the top surface of the second surface layer section 13; and the water-impermeable bottom layer 3 is matched and connected to the bottom surface of the second surface layer section 13.
[0039] In summary, the first air permeable gap 4 can be used to improve the air permeability of the sanitary napkin body, and the flow and absorption of menstrual blood can be facilitated. Specifically, since the width of the second surface layer section 13 is greater than the width of the first surface layer section 11, after the absorbent body 2 absorbs a certain amount of menstrual blood, the subsequent or overflow menstrual blood can naturally flow downward along the surface of the first surface layer section 11 until it reaches the position of the first air permeable gap 4, so that a certain amount of menstrual blood can be continuously absorbed by the first surface layer section 11 and the second surface layer section 13 above and below the first air permeable gap 4, that is, the first air permeable gap 4 can facilitate the flow and absorption of menstrual blood, and it also forms a side leakage prevention structure. Of course, since the first air permeable gap 4 separates the first surface layer section 11 and the second surface layer section 13, the air circulation can be smoother, that is, the air permeability of the sanitary napkin body is improved.
[0040] As Figure 3 In the embodiment, the sanitary napkin body further comprises a waterproof and air permeable film 5; the waterproof and air permeable film 5 is matched and installed in the cavity of the first surface layer section 11; the inner surface of the waterproof and air permeable film 5 is connected to the bottom surface and the peripheral side surface of the absorbent body 2, and the outer surface of the waterproof and air permeable film 5 is connected to the bottom surface and the peripheral side surface of the cavity of the first surface layer section 11. Specifically, the connection mode of the waterproof and air permeable film 5 and other components can be abutting connection, that is, they are not fixedly connected. After the waterproof and air permeable film 5 is provided, since it has certain air permeability and permeability, it can block menstrual blood while having certain air permeability.
[0041] As Figure 3The bottom middle position of the first surface layer section 11 is a connecting port (not shown in the figure) ; the connecting port extends along the length direction of the sanitary napkin body; the first transition section 12 comprises a transition left section 121 and a transition right section 122 which are mutually adhered and connected, the upper end of the transition left section 121 and the upper end of the transition right section 122 correspond to the two sides of the connecting port respectively so as to cover the connecting port; the second surface layer section 13 comprises a first part 131 and a second part 132 which correspond to the lower end of the transition left section 121 and the lower end of the transition right section 122 respectively; the first part 131 and the second part 132 are also mutually adhered and connected. Therefore, the above-mentioned arrangement can realize the cooperation and connection between each surface layer section and the first transition section 12, and also helps to separate the first surface layer section 11 and the second surface layer section 13.
[0042] As shown in the figure, the first surface layer section 11 comprises a first surface layer left section 111 and a first surface layer right section 112 which are mutually adhered and connected. Figure 3 In order to facilitate the connection and positioning, the transition left section 121 and the transition right section 122 are connected through hot-pressing adhesion; at the same time, the first part 131 and the second part 132 of the second surface layer section 13 are also connected through hot-pressing adhesion. The above-mentioned arrangement can facilitate the connection between each part.
[0043] As shown in the figure, the first surface layer section 11 comprises a first surface layer left section 111 and a first surface layer right section 112 which are mutually adhered and connected. Figure 3 In the embodiment, the first transition section 12 is in an inclined shape.
[0044] In the embodiment, the water-impermeable bottom layer 3 is adhered to the bottom surface of the second surface layer section 13, so that the water-impermeable bottom layer 3 can be stably installed, and also can prevent the menstrual blood from penetrating through the water-impermeable bottom layer 3 by using the water-impermeable feature, thereby playing a blocking role.
[0045] In the embodiment, the front end of the first surface layer section 11, the first transition section 12, the second surface layer section 13 and the water-impermeable bottom layer 3 are correspondingly connected through hot-pressing; the rear end of the first surface layer section 11, the first transition section 12, the second surface layer section 13 and the water-impermeable bottom layer 3 are also correspondingly connected through hot-pressing. The above-mentioned arrangement can facilitate the positioning of the absorbent body 2 and facilitate the use of the sanitary napkin after the above-mentioned parts are fixed as a whole.
[0046] The bottom surface of the water-impermeable bottom layer 3 is provided with a pressure-sensitive adhesive sheet (not shown in the figure), and the bottom of the pressure-sensitive adhesive sheet is further provided with a release paper (not shown in the figure).
[0047] The breathable surface layer is made of hydrophilic non-woven fabric, pure cotton, bamboo fiber or artificial cotton.
[0048] The absorbent body 2 is made of wood pulp, high-molecular water-absorbing paper composite material or fluffy cotton.
[0049] The water-impermeable bottom layer 3 is made of a PE waterproof bottom film composite water-repellent non-woven fabric.
[0050] For the waterproof and breathable film 5, it is molded by a PE breathable bottom mold.
[0051] In combination Figure 5 , specifically in use, after the release paper is torn off, the sanitary napkin body can be pasted on the trousers by the pressure sensitive adhesive sheet. Then, after the sanitary napkin body is in contact with the skin at the corresponding position, the sanitary napkin body will automatically present a certain arc shape, i.e. bending, so that the middle position of each first breathable gap 4 is more easily opened to a certain extent due to the bending of the sanitary napkin body, thereby obtaining a good breathable effect and facilitating the entry of menstrual blood.
[0052] Example Two:
[0053] As shown in Figure 4 , the difference between the present embodiment and Example One is that, in the present embodiment, the water permeable surface layer 1 further comprises a third surface layer section 14 and a second transition section 15; the top middle of the first surface layer section 11 is provided with a first opening 111 extending along the length direction of the sanitary napkin body; the third surface layer section 14 is internally provided with an inner cavity and the middle of the bottom of the inner cavity is provided with a second opening 141 extending along the length direction of the sanitary napkin body; the middle of the second transition section 15 is provided with a through channel 151 penetrating upward and downward and the upper and lower ends of the second transition section 15 are respectively connected to the periphery of the first opening 111 and the periphery of the second opening 141; the width of the third surface layer section 14 is smaller than the width of the first surface layer section 11 and the second breathable gaps 6 are respectively formed between the two sides of the top surface of the first surface layer section 11 and the two sides of the bottom surface of the third surface layer section 14; the width of the second transition section 15 is smaller than the width of the third surface layer section 14, i.e. the longitudinal section between the third surface layer section 14 and the second transition section 15 is in the shape of “T”.
[0054] In the present embodiment, the absorbent body 2 comprises a first absorbent section 21, a second absorbent section 22 and a third absorbent section 23 connected in sequence from top to bottom; the first absorbent section 21 is matchedly filled in the inner cavity of the third surface layer section 14, the second absorbent section 22 is matchedly filled in the through channel 151 of the second transition section 15, and the third absorbent section 23 is matchedly filled in the inner cavity of the first surface layer section 11. Therefore, in practice, the width of the first absorbent section 21 is smaller than the width of the third absorbent section 23, and the width of the second absorbent section 22 is smaller than the width of the first absorbent section 21. In addition, the waterproof and breathable film 5 is correspondingly coated on the bottom surface and the four surrounding side surfaces of the third absorbent section 23.
[0055] In summary, the present application can increase the volume of storage of menstrual blood by the above-mentioned arrangement. For example, after the menstrual blood enters the first absorption section 21 through the third surface layer section 14, it can continue to enter the third absorption section 23 along the second absorption section 22. This undoubtedly greatly improves the capacity of the sanitary napkin body to store menstrual blood. At the same time, the second air permeable gap 6 can also be used to improve the air permeability of the sanitary napkin body and facilitate the flow and absorption of menstrual blood. Since its function is the same as that of the first air permeable gap 4, it will not be repeated here. In addition, the third surface layer section 14, the first surface layer section 11, and the second air permeable gap 6 are arranged so that after the menstrual blood flows from the outer surface of the third surface layer section 14 to both sides, the subsequent or overflow menstrual blood can continue to flow to the first surface layer section 14 as it is absorbed. In other words, this design actually forms two side leakage prevention structures, which have very good use effect.
[0056] It should also be noted that each part of the water-permeable surface layer 1 is actually integrally formed, that is, each part is formed by bending a whole piece of material. Of course, each part of the absorbent body 2 is also integrally formed. Since the width of the third surface layer section 14 is less than the width of the first surface layer section 11, and the width of the first surface layer section 11 is less than the width of the second surface layer section 13, this design is more in line with the human body structure in actual use, making the above-mentioned surface layer sections more comfortable when in contact with the skin, and the flow effect of menstrual blood is also improved to some extent.
[0057] The present application is not limited to the above-mentioned embodiments, and various modifications or variations of the present application can be made without departing from the spirit and scope of the present application. If these modifications and variations fall within the scope of the claims and the equivalent technical scope of the present application, the present application also intends to include these modifications and variations.
Claims
1. A one-piece wrap-around anti-leakage sanitary napkin, characterized in that: It includes a sanitary napkin body; the sanitary napkin body includes a water-permeable surface layer, an absorbent core, and a water-impermeable bottom layer; The permeable surface layer includes a first surface layer section, a first transition section and a second surface layer section connected sequentially from top to bottom; The first surface layer has an internal cavity, and the absorbent is matched and filled in the internal cavity of the first surface layer; the upper end and lower end of the first transition section are respectively connected to the middle position of the bottom of the first surface layer and the middle position of the top of the second surface layer; the width of the second surface layer is greater than the width of the first surface layer; a first air-permeable gap is formed between the two sides of the bottom surface of the first surface layer and the two sides of the top surface of the second surface layer. The impermeable sublayer is properly connected to the bottom surface of the second surface layer segment; The first ventilation gap can be used to improve the breathability of the sanitary napkin body, and also facilitate the flow and absorption of menstrual blood.
2. The one-piece wrapped anti-leakage sanitary napkin according to claim 1, characterized in that: The sanitary napkin body also includes a waterproof and breathable membrane; the waterproof and breathable membrane is fitted into the inner cavity of the first surface layer; the inner surface of the waterproof and breathable membrane is connected to the bottom surface and the surrounding sides of the absorbent body, and the outer surface of the waterproof and breathable membrane is connected to the bottom surface and the surrounding sides of the inner cavity of the first surface layer.
3. The one-piece wrapped anti-leakage sanitary napkin according to claim 1, characterized in that: The bottom center of the first surface layer is a connection port; the connection port extends along the length of the sanitary napkin body; the first transition section includes a transition left section and a transition right section that are attached to each other and connected, the upper ends of the transition left section and the upper ends of the transition right section are respectively connected to the two sides of the connection port to seal the connection port; the second surface layer includes a first part and a second part whose inner sides are respectively connected to the lower ends of the transition left section and the lower ends of the transition right section; the first part and the second part are also attached to each other and connected.
4. The one-piece wrapped anti-leakage sanitary napkin according to claim 3, characterized in that: The left transition segment and the right transition segment are connected by heat-press bonding; the first part and the second part of the second surface layer segment are also connected by heat-press bonding.
5. The one-piece wrapped anti-leakage sanitary napkin according to claim 1, characterized in that: The first transition section is inclined.
6. The one-piece wrapped anti-leakage sanitary napkin according to claim 1, characterized in that: The impermeable bottom layer is bonded to the bottom surface of the second surface layer.
7. The one-piece wrapped anti-leakage sanitary napkin according to claim 1, characterized in that: The first surface layer, the first transition layer, the second surface layer, and the front end of the impermeable bottom layer are connected by hot pressing; the first surface layer, the first transition layer, the second surface layer, and the rear end of the impermeable bottom layer are also connected by hot pressing.
8. The one-piece wrapped anti-leakage sanitary napkin according to claim 1, characterized in that: A pressure-sensitive film is provided on the bottom surface of the impermeable substrate, and a release paper is provided at the bottom of the pressure-sensitive film.
9. The one-piece wrapped anti-leakage sanitary napkin according to claim 1, characterized in that: The permeable surface layer further includes a third surface layer segment and a second transition segment; the top center of the first surface layer segment has a first opening extending along the length direction of the sanitary napkin body; the third surface layer segment has an inner cavity, and the bottom center of the inner cavity has a second opening extending along the length direction of the sanitary napkin body; the middle of the second transition segment has a vertically penetrating channel, and the upper and lower ends of the second transition segment are respectively connected to the periphery of the first opening and the periphery of the second opening; the width of the third surface layer segment is smaller than the width of the first surface layer segment, and second air-permeable gaps are formed between the top two sides of the first surface layer segment and the bottom two sides of the third surface layer segment; the width of the second transition segment is smaller than the width of the third surface layer segment. The absorber includes a first absorber section, a second absorber section, and a third absorber section connected sequentially from top to bottom; the first absorber section is matched to fill the inner cavity of the third surface layer section, the second absorber section is matched to fill the channel of the second transition section, and the third absorber section is matched to fill the inner cavity of the first surface layer section.
Citation Information
Patent Citations
Refreshing and breathable sanitary towel
CN105796247A