A side leakage preventing absorbent article

Abstract

This utility model discloses a leak-proof absorbent product, comprising a longitudinal structure, a side leak-proof structure, and a transverse structure. The longitudinal structure consists of a main absorbent layer and two side absorbent layers, each side absorbent layer comprising a side absorbent core and a front sheet. The side leak-proof structure covers both sides of the main absorbent layer and the side absorbent layers, forming a double leak-proof barrier. The main absorbent layer comprises a main absorbent core and an outer sheet; the side absorbent core is preferably made of a water-absorbing and swelling material, which expands upon contact with liquid to fit snugly against the skin. The transverse structure can be made of an elastic material, forming a pull-up pant structure in conjunction with the outer cover structure. This product, through its multi-layer absorbent structure and leak-proof design, effectively improves leak-proof performance while maintaining breathability and comfort, making it particularly suitable for hygiene products with high absorbency requirements.

Description

Technical Field

[0001] This utility model relates to the field of disposable hygiene products technology, and more specifically, it relates to a leak-proof absorbent product. Background Technology

[0002] As disposable products such as pull-up diapers and sanitary pants used to absorb urine, their main function is to absorb liquid through the core, prevent liquid leakage, and ensure personal hygiene.

[0003] For example, Chinese Patent Publication No. CN217593230U, published on October 18, 2022, entitled "Anti-Leakage Absorbent Article," discloses a sanitary product. It utilizes a higher content of polymer material on the sides of the absorbent core compared to the central portion. This causes the polymer material to expand after the absorbent core absorbs liquid, with the sides expanding more than the central portion, creating a cross-section that is concave in the middle and convex on both sides. This effectively prevents liquid leakage from the sides, improving the anti-leakage effect.

[0004] However, the above structure needs to absorb liquid to prevent side leakage. If the initial liquid volume is large, the absorbent core on the side may not have enough time to expand, which can easily lead to side leakage. Utility Model Content

[0005] This invention overcomes the shortcomings of existing absorbent products, which are prone to side leakage when the initial liquid volume is large. It provides a side-leakage-proof absorbent product that can effectively prevent side leakage and has a good side-leakage-proof effect even when the initial liquid volume is large.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a leak-proof absorbent product, comprising:

[0007] The longitudinal structure includes a main absorption layer and a side absorption layer; the side absorption layer includes side absorption cores disposed on both sides of the main absorption layer in the width direction.

[0008] Side-to-side leakage prevention structure, covering both sides of the main absorbent layer and the side absorbent layer;

[0009] The horizontal structure is located at both ends of the vertical structure and is perpendicular to the vertical structure.

[0010] This invention features side absorbent layers on both sides of the width of the main absorbent layer, and adds a side-leaking prevention structure covering both sides of the main and side absorbent layers. Upon contact with liquid, the liquid is absorbed through two paths: first, by the side absorbent layers, and second, by downward permeation to the main absorbent layer. Therefore, it provides excellent side-leaking prevention. Furthermore, even with large volumes of liquid, the side-leaking prevention structure effectively blocks outward leakage, further enhancing the side-leaking prevention effect.

[0011] Preferably, an outer cover structure is provided on the side of the main absorber layer away from the side absorber layer, and the outer cover structure is connected to the transverse structure and the longitudinal structure.

[0012] The outer cover structure works in conjunction with the horizontal structure to form the pull-up pants.

[0013] Preferably, the outer cover structure includes an inner sheet and an outer sheet; the inner sheet is connected to the main absorbent layer and the transverse structure.

[0014] Preferably, the side absorption layer also includes a front sheet, the side absorption core of which is covered by bending the front sheet on both sides in the width direction.

[0015] The front sheet is generally made of non-woven fabric, which has good breathability, allowing water vapor to pass through smoothly and moisture to be expelled in time. It is also soft, comfortable and does not irritate the skin.

[0016] Preferably, the two sides of the front sheet are bent toward the main absorption layer in the width direction.

[0017] Since the bonding surface may have wrinkles or unevenness, the above-mentioned structure can prevent the skin from coming into contact with the bonding surface, thereby improving the comfort of use.

[0018] Preferably, the side leakage prevention structure includes a leakage prevention sheet and a back sheet; the leakage prevention sheet is disposed on both sides of the main absorbent layer and the side absorbent layer; the back sheet is disposed on the side of the main absorbent layer away from the side absorbent layer, and the back sheet is connected to the leakage prevention sheets on both sides of the main absorbent layer.

[0019] The anti-leakage sheet is mainly made of impermeable material, which can block liquid from both sides of the main absorbent layer and the side absorbent layer, preventing liquid from leaking out. The back sheet is made of breathable material, allowing the main absorbent layer and the side absorbent layer to maintain good air permeability.

[0020] Preferably, the main absorbent layer includes a main absorbent core and an outer sheet disposed around the main absorbent core.

[0021] The outer and front sheets can be made of the same material, providing excellent breathability. The main absorbent core is made of a highly absorbent material, thus enhancing absorption efficiency.

[0022] Preferably, the transverse structure uses an elastic sheet.

[0023] The horizontal structure uses elastic sheet material for support, which can increase the stress area of ​​the waist, thereby solving the problem of waist constriction and achieving a truly waist-free effect.

[0024] Compared with existing technologies, the beneficial effects of this invention are as follows: By setting side absorption layers on both sides of the width of the main absorption layer and adding a side-leaking prevention structure covering both sides of the main absorption layer and the side absorption layers, when liquid comes into contact with the main absorption layer, the liquid is absorbed through two paths: the first is absorption by the side absorption layers, and the second is downward permeation and absorption by the core. Therefore, it has a good anti-leakage effect. Furthermore, even when the amount of liquid is large, the side-leaking prevention structure can block the liquid and prevent it from seeping outward, thereby improving the anti-leakage effect.

[0025] The horizontal structure uses elastic sheet material for support, which can increase the stress area of ​​the waist, thereby solving the problem of waist constriction and achieving a truly waist-free effect. Attached Figure Description

[0026] Figure 1 This is a top view of the present invention.

[0027] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0028] Figure 3 yes Figure 1 Another structural diagram of the cross-sectional view along the AA direction.

[0029] In the diagram: 1. Horizontal structure;

[0030] 2. Longitudinal structure, 21. Main absorbent layer, 211. Main absorbent core, 212. Outer sheet, 213. Second sheet, 22. Side absorbent layer, 221. Side absorbent core, 222. Front sheet;

[0031] 3. Side leakage prevention structure, 31. Leakage prevention sheet, 311. First edge banding, 312. Second edge banding, 32. Back sheet;

[0032] 4. Outer cover structure; 41. Inner sheet; 42. Outer sheet. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0034] Example 1: Refer to Figures 1 to 3 As shown, a leak-proof absorbent product includes a longitudinal structure 2, a side leak-proof structure 3, and a transverse structure 1.

[0035] The longitudinal structure 2 includes a main absorption layer 21 and a side absorption layer 22; the side absorption layer 22 includes side absorption cores 221 disposed on both sides of the main absorption layer 21 in the width direction;

[0036] The side leakage prevention structure 3 covers both sides of the main absorption layer 21 and the side absorption layer 22;

[0037] The transverse structure 1 is located at both ends of the longitudinal structure 2 and is perpendicular to the longitudinal structure 2.

[0038] Specifically, this application involves providing side absorbent layers 22 on both sides of the width of the main absorbent layer 21, and adding a side-leaking prevention structure 3 covering both sides of the main absorbent layer 21 and the side absorbent layers 22. Upon contact with liquid, the liquid is absorbed through two paths: first, by the side absorbent layers 22, and second, by downward permeation and absorption by the main absorbent layer 21. Therefore, it exhibits excellent anti-leakage performance. Furthermore, even when the liquid volume is large, the side-leaking prevention structure 3 can effectively block the liquid, preventing outward permeation and further enhancing the anti-leakage effect.

[0039] The side absorbent layer 22 also includes a front sheet 222, which is bent on both sides in the width direction to cover the side absorbent core 221. The front sheet 222 is generally made of non-woven fabric, which has good breathability, allowing water vapor to pass through smoothly and expel moisture in a timely manner, and is soft, comfortable and non-irritating to the skin.

[0040] In one embodiment, the side absorbent core 221 is made of a highly absorbent material. This material has excellent absorbency, thus improving the overall absorption effect of the structure. Since absorbent materials are existing technology, the specific composition of the material will not be described in this embodiment to avoid redundancy. Furthermore, the side absorbent core 221 is preferably made of a water-absorbing and swelling material. This allows the side absorbent core 221 to swell after absorbing moisture, enabling it to fit tightly against the skin and improve the anti-leakage effect. Specifically, in this embodiment, the side absorbent core 221 preferably uses a superabsorbent polymer (SAP). SAP is a typical functional polymer material that can absorb hundreds or even thousands of times its own weight in water and has excellent water retention. Many other water-absorbing and swelling materials can also be used in this embodiment, as they are suitable for use in absorbent products without affecting human health.

[0041] In one embodiment, such as Figure 3 As shown in area B, the front sheet 222 is bent towards the main absorbent layer 21 on both sides in the width direction. During the manufacturing process, the front sheet 222 is bent towards the main absorbent layer 21 to cover the side absorbent core 221, so that the edge of the front sheet 222 is in contact with the side closest to the main absorbent layer 21. Since the contact surface may have wrinkles or unevenness, the above structure can prevent the skin from contacting the contact surface, thereby improving the comfort of use.

[0042] In one embodiment, the main absorbent layer 21 includes a main absorbent core 211 and an outer sheet 212 disposed around the main absorbent core 211. The outer sheet 212 and the front sheet 222 can be made of the same material, providing good breathability. The main absorbent core 211 is made of a highly absorbent material, thereby improving the absorption effect. Highly absorbent materials are existing technology and can be directly applied in this embodiment, and will not be described in detail here.

[0043] In addition, a second sheet 213 is wrapped around the outer side of the outer sheet 212. The second sheet 213 is used to connect the main absorbent layer 21 and the side absorbent layer 22 together. In actual production, the outer sheet 212 can be pre-wrapped around the main absorbent core 211, and then the main absorbent layer 21 and the side absorbent layer 22 can be directly connected together through the second sheet 213. This can improve production efficiency and reduce manufacturing costs.

[0044] The thickness of the main absorbent core 211 and the side absorbent core 221 can be set according to actual conditions. However, if the overall thickness is set too thick, it will affect the comfort of use, while if it is designed to be too thick, it will affect the overall water absorption and anti-leakage effect. In this embodiment, the thickness of the main absorbent core 211 is in the range of 3mm to 8mm, and the thickness of the side absorbent core 221 is in the range of 1mm to 3mm. Within this range, both the comfort of use and the water absorption effect can be taken into account.

[0045] In one embodiment, the side leakage prevention structure 3 includes a leakage prevention sheet 31 and a back sheet 32. The leakage prevention sheet 31 is disposed on both sides of the integral structure composed of the main absorbent layer 21 and the side absorbent layer 22. The back sheet 32 ​​is disposed on the side of the main absorbent layer 21 away from the side absorbent layer 22, and the back sheet 32 ​​is connected to the leakage prevention sheets 31 on both sides of the main absorbent layer 21. The leakage prevention sheet 31 is mainly made of impermeable material, so that it can block liquid on both sides of the main absorbent layer 21 and the side absorbent layer 22, preventing liquid from leaking outward. A first edge 311 is provided on one side of the leakage prevention sheet 31, and a second edge 312 is provided on the other side of the leakage prevention sheet 31. The first edge 311 covers the side absorbent core 221, and the second edge 312 covers the side of the main absorbent layer 21 away from the side absorbent layer 22, thereby forming a covering structure on both sides of the main absorbent layer 21 and the side absorbent layer 22. The back sheet 32 ​​is connected to the second edge 312 on both sides. The back sheet 32 ​​is made of breathable material, which allows the main absorbent layer 21 and the side absorbent layer 22 to maintain good breathability.

[0046] This invention provides side absorbent layers 22 on both sides of the width of the main absorbent layer 21, and adds a side-leaking prevention structure 3 covering both sides of the main absorbent layer 21 and the side absorbent layers 22. When liquid comes into contact with the main absorbent layer 21, the liquid is absorbed through two paths: first, by the side absorbent layers 22, and second, by downward permeation and absorption by the core. Therefore, it has a good anti-leakage effect. Furthermore, even when the liquid volume is large, the side-leaking prevention structure 3 can block the liquid, preventing it from seeping outwards, thereby improving the anti-leakage effect.

[0047] In addition, the side absorbent core 221 can also be made of water-absorbing and swelling material, so that the side absorbent core 221 can swell after absorbing water, and can fit more closely to both sides of the skin, further improving the side leakage prevention effect.

[0048] Example 2: Refer to Figures 1 to 3 As shown, a leak-proof absorbent product includes a longitudinal structure 2, a side leak-proof structure 3, and a transverse structure 1.

[0049] The longitudinal structure 2 includes a main absorption layer 21 and a side absorption layer 22; the side absorption layer 22 includes side absorption cores 221 disposed on both sides of the main absorption layer 21 in the width direction;

[0050] The side leakage prevention structure 3 covers both sides of the main absorption layer 21 and the side absorption layer 22;

[0051] The transverse structure 1 is located at both ends of the longitudinal structure 2 and is perpendicular to the longitudinal structure 2.

[0052] Specifically, this application involves providing side absorbent layers 22 on both sides of the width of the main absorbent layer 21, and adding a side-leaking prevention structure 3 covering both sides of the main absorbent layer 21 and the side absorbent layers 22. Upon contact with liquid, the liquid is absorbed through two paths: first, by the side absorbent layers 22, and second, by downward permeation and absorption by the main absorbent layer 21. Therefore, it exhibits excellent anti-leakage performance. Furthermore, even when the liquid volume is large, the side-leaking prevention structure 3 can effectively block the liquid, preventing outward permeation and further enhancing the anti-leakage effect.

[0053] The side absorbent layer 22 also includes a front sheet 222, which is bent on both sides in the width direction to cover the side absorbent core 221. The front sheet 222 is generally made of non-woven fabric, which has good breathability, allowing water vapor to pass through smoothly and expel moisture in a timely manner, and is soft, comfortable and non-irritating to the skin.

[0054] In one embodiment, the side absorbent core 221 is made of a highly absorbent material. This material has excellent absorbency, thus improving the overall absorption effect of the structure. Since absorbent materials are existing technology, the specific composition of the material will not be described in this embodiment to avoid redundancy. Furthermore, the side absorbent core 221 is preferably made of a water-absorbing and swelling material. This allows the side absorbent core 221 to swell after absorbing moisture, enabling it to fit tightly against the skin and improve the anti-leakage effect. Specifically, in this embodiment, the side absorbent core 221 preferably uses a superabsorbent polymer (SAP). SAP is a typical functional polymer material that can absorb hundreds or even thousands of times its own weight in water and has excellent water retention. Many other water-absorbing and swelling materials can also be used in this embodiment, as they are suitable for use in absorbent products without affecting human health.

[0055] In one embodiment, such as Figure 3 As shown in area B, the front sheet 222 is bent towards the main absorbent layer 21 on both sides in the width direction. During the manufacturing process, the front sheet 222 is bent towards the main absorbent layer 21 to cover the side absorbent core 221, so that the edge of the front sheet 222 is in contact with the side closest to the main absorbent layer 21. Since the contact surface may have wrinkles or unevenness, the above structure can prevent the skin from contacting the contact surface, thereby improving the comfort of use.

[0056] In one embodiment, the main absorbent layer 21 includes a main absorbent core 211 and an outer sheet 212 disposed around the main absorbent core 211. The outer sheet 212 and the front sheet 222 can be made of the same material, providing good breathability. The main absorbent core 211 is made of a highly absorbent material, thereby improving the absorption effect. Highly absorbent materials are existing technology and can be directly applied in this embodiment, and will not be described in detail here.

[0057] In addition, a second sheet 213 is wrapped around the outer side of the outer sheet 212. The second sheet 213 is used to connect the main absorbent layer 21 and the side absorbent layer 22 together. In actual production, the outer sheet 212 can be pre-wrapped around the main absorbent core 211, and then the main absorbent layer 21 and the side absorbent layer 22 can be directly connected together through the second sheet 213. This can improve production efficiency and reduce manufacturing costs.

[0058] The thickness of the main absorbent core 211 and the side absorbent core 221 can be set according to actual conditions. However, if the overall thickness is set too thick, it will affect the comfort of use, while if it is designed to be too thick, it will affect the overall water absorption and anti-leakage effect. In this embodiment, the thickness of the main absorbent core 211 is in the range of 3mm to 8mm, and the thickness of the side absorbent core 221 is in the range of 1mm to 3mm. Within this range, both the comfort of use and the water absorption effect can be taken into account.

[0059] In one embodiment, the side leakage prevention structure 3 includes a leakage prevention sheet 31 and a back sheet 32. The leakage prevention sheet 31 is disposed on both sides of the integral structure composed of the main absorbent layer 21 and the side absorbent layer 22. The back sheet 32 ​​is disposed on the side of the main absorbent layer 21 away from the side absorbent layer 22, and the back sheet 32 ​​is connected to the leakage prevention sheets 31 on both sides of the main absorbent layer 21. The leakage prevention sheet 31 is mainly made of impermeable material, so that it can block liquid on both sides of the main absorbent layer 21 and the side absorbent layer 22, preventing liquid from leaking outward. A first edge 311 is provided on one side of the leakage prevention sheet 31, and a second edge 312 is provided on the other side of the leakage prevention sheet 31. The first edge 311 covers the side absorbent core 221, and the second edge 312 covers the side of the main absorbent layer 21 away from the side absorbent layer 22, thereby forming a covering structure on both sides of the main absorbent layer 21 and the side absorbent layer 22. The back sheet 32 ​​is connected to the second edge 312 on both sides. The back sheet 32 ​​is made of breathable material, which allows the main absorbent layer 21 and the side absorbent layer 22 to maintain good breathability.

[0060] This embodiment is similar in structure to Embodiment 1, except that the transverse structure 1 is made of an elastic sheet.

[0061] An outer cover structure 4 is provided on the side of the main absorption layer 21 away from the side absorption layer 22. The outer cover structure 4 is connected to the transverse structure 1 and the longitudinal structure 2.

[0062] The outer cover structure 4 includes an inner sheet 41 and an outer sheet 42; the inner sheet 41 is connected to the main absorbent layer 21 and the transverse structure 1.

[0063] In this embodiment, the transverse structure 1 is made of elastic sheet material, which can increase the stress area of ​​the waist and thus solve the problem of waist constriction, achieving a truly waist-free effect.

[0064] In addition, in this embodiment, an outer cover structure 4 is provided, which cooperates with the horizontal structure 1 to form a pull-up trouser.

[0065] This invention provides side absorbent layers 22 on both sides of the width of the main absorbent layer 21, and adds a side-leaking prevention structure 3 covering both sides of the main absorbent layer 21 and the side absorbent layers 22. When liquid comes into contact with the main absorbent layer 21, the liquid is absorbed through two paths: first, by the side absorbent layers 22, and second, by downward permeation and absorption by the core. Therefore, it has a good anti-leakage effect. Furthermore, even when the liquid volume is large, the side-leaking prevention structure 3 can block the liquid, preventing it from seeping outwards, thereby improving the anti-leakage effect.

[0066] In addition, the side absorbent core 221 can also be made of water-absorbing and swelling material, so that the side absorbent core 221 can swell after absorbing water, and can fit more closely to both sides of the skin, further improving the side leakage prevention effect.

[0067] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A leak-proof absorbent product, characterized in that, include: The longitudinal structure includes a main absorption layer and a side absorption layer; The side absorption layer includes side absorption cores disposed on both sides of the main absorption layer in the width direction; Side-to-side leakage prevention structure, covering both sides of the main absorbent layer and the side absorbent layer; The horizontal structure is located at both ends of the vertical structure and is perpendicular to the vertical structure.

2. The anti-leakage absorbent product according to claim 1, characterized in that, An outer cover structure is provided on the side of the main absorption layer away from the side absorption layer, and the outer cover structure is connected to the transverse structure and the longitudinal structure.

3. The anti-leakage absorbent product according to claim 2, characterized in that, The outer cover structure includes an inner sheet and an outer sheet; the inner sheet is connected to the main absorbent layer and the transverse structure.

4. The anti-leakage absorbent product according to claim 1, characterized in that, The side absorption layer also includes a front sheet, which is bent on both sides in the width direction to cover the side absorption core.

5. The anti-leakage absorbent product according to claim 3, characterized in that, The front sheet is bent towards the main absorption layer on both sides in the width direction.

6. The anti-leakage absorbent product according to any one of claims 1 to 5, characterized in that, The side leakage prevention structure includes a leakage prevention sheet and a back sheet; the leakage prevention sheet is disposed on both sides of the main absorbent layer and the side absorbent layer; the back sheet is disposed on the side of the main absorbent layer away from the side absorbent layer, and the back sheet is connected to the leakage prevention sheets on both sides of the main absorbent layer.

7. The anti-leakage absorbent product according to any one of claims 1 to 5, characterized in that, The main absorption layer includes a main absorption core and an outer sheet disposed around the main absorption core.

8. The anti-leakage absorbent product according to claim 7, characterized in that, The transverse structure uses elastic sheet material.

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