Leakproof paper diaper

Abstract

This utility model relates to the field of disposable hygiene products, and in particular to a leak-proof diaper. It mainly solves the problem of poor leak-proof effect in the prior art. It includes a diaper body, which has a front waist area, a crotch area, and a back waist area distributed along one side in the longitudinal direction. The diaper body includes a liquid-permeable surface layer, an absorbent core layer, a liquid-impermeable bottom layer, and an adhesive component. The absorbent core layer is laminated on the upper surface of the liquid-impermeable bottom layer, and the liquid-permeable surface layer is laminated on the upper surface of the absorbent core layer. The liquid-permeable surface layer includes a hydrophilic nonwoven fabric, two hydrophobic nonwoven fabrics, a first elastic band, a second elastic band, and a back leak-proof sheet. The hydrophilic nonwoven fabric covers the upper surface and two transverse sides of the absorbent core layer. The two hydrophobic nonwoven fabrics are respectively fixedly connected to the two transverse sides of the hydrophilic nonwoven fabric. The first elastic band is located at the free end of the hydrophobic nonwoven fabric to form a three-dimensional protective barrier.

Description

Technical Field

[0001] This utility model relates to the field of disposable hygiene products, and in particular to a leak-proof diaper. Background Technology

[0002] As an indispensable product in the daily care of infants and incontinent individuals, the performance of disposable diapers directly affects the user's comfort and health. While current disposable diapers on the market meet basic urine absorption functions to a certain extent, many problems still exist.

[0003] Regarding leak prevention, existing disposable diapers are prone to side and back leaks when exposed to large amounts of urine or prolonged use. This is because the traditional diaper design is not perfect; the three-dimensional protective barriers have limited leak prevention effectiveness, and the back waist area lacks effective leak prevention measures, causing urine to easily overflow from the sides or back, soiling clothes and bedding, and causing inconvenience to users and caregivers. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model provides a leak-proof diaper, which mainly solves the problem of poor leak-proof effect in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A leak-proof diaper includes a diaper body, defined as extending longitudinally along the length direction and laterally along the width direction. The diaper body has a front waist area, a crotch area, and a back waist area distributed along one side of the longitudinal direction. The diaper body includes a liquid-permeable top layer, an absorbent core layer, a liquid-impermeable bottom layer, and an adhesive component. The absorbent core layer is laminated to the upper surface of the liquid-impermeable bottom layer, and the liquid-permeable top layer is laminated to the upper surface of the absorbent core layer. The liquid-permeable top layer includes a hydrophilic nonwoven fabric, two hydrophobic nonwoven fabrics, a first elastic band, a second elastic band, and a back leak-proof sheet. The hydrophilic nonwoven fabric covers the upper surface and two laterally adjacent sides of the absorbent core layer. The two hydrophobic nonwoven fabrics are respectively fixedly connected to the two laterally adjacent sides of the hydrophilic nonwoven fabric. The first elastic band is located at the free end of the hydrophobic nonwoven fabric, forming a three-dimensional protective barrier. The back leak-proof sheet... The two sides of the back leak-proof sheet are respectively bonded to two three-dimensional guards and distributed in the back waist area. The longitudinal outer side of the back leak-proof sheet is bonded to a hydrophilic non-woven fabric. The second elastic band is bonded to the back leak-proof sheet. Both sides of the back leak-proof sheet have extension portions extending outward. The adhesive assembly includes a first hook and loop fastener, two first hook and loop sub-tapes, a second hook and loop fastener, and two second hook and loop sub-tapes. One end of each of the two first hook and loop sub-tapes is bonded to the extension portion. The first hook and loop fastener is located on the outer surface of the front waist area of ​​the diaper body and extends in the lateral direction of the front waist area. One end of each of the two second hook and loop sub-tapes is bonded to the two sides of the diaper body and distributed in the front waist area. The second hook and loop fastener is located on the outer surface of the back waist area of ​​the diaper body and extends in the lateral direction of the back waist area.

[0007] Furthermore, the absorbent core layer is filled with a sponge layer, and the foam skeleton of the sponge layer is filled with water-absorbing resin particles. The water-absorbing resin particles include any one or a combination of at least two of sodium polyacrylate particles, polyacrylamide particles, and polyethylene oxide particles. The sponge layer includes a polyester-type sponge layer or a polyether-type sponge layer.

[0008] Furthermore, the particle size of the absorbent resin particles is 30-200 mesh, and the apparent density of the absorbent resin particles in the sponge layer is 5-30 g / m³. 3 .

[0009] Furthermore, it also includes drainage ports located on the upper and lower sides of the absorbent core layer, and a first absorbent sheet located on the impermeable bottom layer corresponding to the location of the drainage port; when the absorbent core is saturated, urine can enter the surface of the impermeable bottom layer through the drainage port and be absorbed by the first absorbent sheet.

[0010] Furthermore, the upper surface of the absorbent core layer is provided with a guide groove that is connected to the drain port.

[0011] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This leak-proof diaper, through the reasonable division of the front waist area, crotch area, and back waist area, allows the diaper to better conform to the curves of the human body, conforming to ergonomic design, and improving wearing comfort and fit. The hydrophilic non-woven fabric covering the upper surface and two transverse sides of the absorbent core layer can quickly guide urine into the absorbent core layer, while preventing urine from seeping out from the sides, enhancing the leak-proof performance of the sides. Furthermore, the two hydrophobic non-woven fabrics are respectively attached to the transverse sides of the hydrophilic non-woven fabric. The diaper features a fixed edge connection and a first elastic band at the free end of the hydrophobic nonwoven fabric to form a three-dimensional protective barrier. This barrier effectively prevents side leakage of urine, while the hydrophobic nonwoven fabric prevents backflow, keeping the user's skin dry. Simultaneously, a rear leak-proof panel is located in the back waist area, with its horizontal sides bonded to the three-dimensional protective barrier and its vertical outer side bonded to the hydrophilic nonwoven fabric, and also incorporating a second elastic band. This design effectively prevents urine leakage from the back waist area, and the second elastic band allows the rear leak-proof panel to better conform to the body, further enhancing the leak-proof effect. The extensions on both sides of the rear leak-proof panel and the rationally designed adhesive components facilitate wearing and securing the diaper, ensuring its stability during use. The rational layout of the first Velcro main strap, first Velcro sub-strap, second Velcro main strap, and second Velcro sub-strap provides multiple adhesive methods, enhancing the diaper's adhesion and allowing for adjustment according to the user's body shape and needs, effectively preventing diaper shifting and falling off. Attached Figure Description

[0012] Figure 1 This is a top view of an embodiment of the present invention.

[0013] Figure 2 This is a bottom view of the structure of an embodiment of the present utility model;

[0014] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure at point AA. Detailed Implementation

[0015] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] The embodiment of this utility model is as follows:

[0017] refer to Figure 1 , Figure 2 and Figure 3As shown, a leak-proof diaper includes a diaper body 1, defined as extending longitudinally along the length direction and laterally along the width direction. The diaper body 1 has a front waist area 101, a crotch area 102, and a back waist area 103 distributed along one side of the longitudinal direction. The diaper body 1 includes a liquid-permeable top layer 11, an absorbent core layer 12, a liquid-impermeable bottom layer 13, and an adhesive assembly 14. The absorbent core layer 12 is laminated to the upper surface of the liquid-impermeable bottom layer 13, and the liquid-permeable top layer 11 is laminated to the upper surface of the liquid-impermeable bottom layer 13. On the upper surface of the absorbent core layer 12, the liquid-permeable surface layer 11 includes a hydrophilic nonwoven fabric 111, two hydrophobic nonwoven fabrics 112, a first elastic band 113, a second elastic band 114, and a rear leak-proof sheet 115. The hydrophilic nonwoven fabric 111 covers the upper surface and two transverse sides of the absorbent core layer 12. The two hydrophobic nonwoven fabrics 112 are respectively fixedly connected to the two transverse sides of the hydrophilic nonwoven fabric 111. The first elastic band 113 is located at the free end of the hydrophobic nonwoven fabric 112, forming a three-dimensional protective enclosure 100. The rear leak-proof sheet 115... The two sides are respectively bonded to two three-dimensional guardrails 100 and distributed in the back waist area 103. The longitudinal outer side of the rear leak-proof sheet 115 is bonded to a hydrophilic non-woven fabric 111. The second elastic rubber 114 is bonded to the rear leak-proof sheet 115. Both sides of the rear leak-proof sheet 115 have extension portions 116 extending outward. The adhesive assembly 14 includes a first hook and loop fastener 141, two first hook and loop fastener sub-tapes 142, a second hook and loop fastener 143, and two second hook and loop fasteners 144. The two first hook and loop fasteners 142 One end of each of the two second hook and loop fasteners 144 is attached to the extension portion 116. The first hook and loop fastener mother tape 141 is disposed on the outer surface of the front waist area 103 of the diaper body 1. The first hook and loop fastener mother tape 141 extends in the lateral direction of the front waist area 101. One end of each of the two second hook and loop fastener daughter tapes 144 is attached to the lateral sides of the diaper body 1 and distributed in the front waist area 101. The second hook and loop fastener mother tape 143 is disposed on the outer surface of the back waist area 101 of the diaper body 1. The second hook and loop fastener mother tape 143 extends in the lateral direction of the back waist area 103.

[0018] This leak-proof diaper, through the rational division of the front waist area 101, crotch area 102, and back waist area 103, allows the diaper to better conform to the body's curves, conforming to ergonomic design and improving wearing comfort and fit. Hydrophilic nonwoven fabric 111 covers the upper surface and lateral sides of the absorbent core layer 12, quickly guiding urine into the absorbent core layer 12 while preventing urine leakage from the sides, enhancing side leak-proof performance. Two hydrophobic nonwoven fabrics 112 are fixedly connected to the lateral sides of the hydrophilic nonwoven fabric 111, and a first elastic band 113 is set at the free end of the hydrophobic nonwoven fabric 112 to form a three-dimensional protective barrier 100. The three-dimensional protective barrier 100 effectively blocks side leakage of urine, and the hydrophobic nonwoven fabric 112 prevents urine backflow, keeping the user's skin dry. Meanwhile, a back leak-proof sheet 115 is distributed in the back waist area. 103, its horizontal sides are bonded to the three-dimensional protective barrier 100, and its vertical outer side is bonded to the hydrophilic non-woven fabric 111, and it is also bonded with a second elastic band 114. This design can effectively prevent urine from leaking from the back waist area 103. The second elastic band 114 makes the back leak-proof sheet 115 fit the human body better, further improving the leak-proof effect. The extensions 116 on both sides of the back leak-proof sheet 115 and the reasonable setting of the adhesive components 14 make it easy to wear and fix, ensuring the stability of the diaper during use. The reasonable layout of the first Velcro main tape 141, the first Velcro sub tape 142, the second Velcro main tape 143 and the second Velcro tape 144 provides multiple adhesive methods, enhances the adhesive firmness of the diaper, and can be adjusted according to the user's body shape and needs, effectively preventing the diaper from shifting and falling off.

[0019] Specifically, the absorbent core layer 12 is filled with a sponge layer 121, and the foam skeleton of the sponge layer 121 is filled with absorbent resin particles 122. The absorbent resin particles 122 include any one or a combination of at least two of sodium polyacrylate particles, polyacrylamide particles, and polyoxyethylene particles, preferably sodium acrylate particles. The sponge layer 121 includes a polyester-type sponge layer or a polyether-type sponge layer, preferably a polyester-type sponge layer. The sponge layer 121, which has a porous structure, is filled inside the absorbent core layer 12 and can quickly absorb and store urine. To increase the absorption capacity of the absorbent core layer 12, the foam skeleton of the sponge layer 121 is filled with absorbent resin particles 122. The absorbent resin particles 122 have high water absorption and water retention properties, which can quickly absorb urine and lock in moisture to prevent urine backflow. The combination of sodium polyacrylate particles, polyacrylamide particles and polyoxyethylene particles can be formulated according to different performance requirements to further improve absorption efficiency and leak-proof effect. The selection of polyester type sponge layer or polyether type sponge layer can be optimized according to the specific requirements of the product and the use environment to provide better absorption performance and comfort.

[0020] Furthermore, the particle size of the absorbent resin particles 122 is 30-200 mesh, preferably 140 mesh, and the apparent density of the absorbent resin particles 122 in the sponge layer 121 is 5-30 g / m³. 3 The preferred value is 20g / m 3 By controlling the particle size of the absorbent resin particles 122 to 30–200 mesh, it is possible to ensure that the absorbent resin particles 122 are evenly distributed in the sponge layer 121, thereby improving absorption efficiency. This suitable particle size range allows the absorbent resin particles 122 to quickly absorb urine while maintaining the air permeability of the sponge layer. The apparent density of the absorbent resin particles 122 in the sponge layer 121 is 5–30 g / m³. 3 Within this range, the absorbency and absorption speed can be balanced, allowing the diaper to absorb urine quickly while storing enough urine, reducing the possibility of leakage.

[0021] In this embodiment, the diaper also includes drain ports 2 located on the upper and lower sides of the absorbent core layer 12, and first absorbent sheets 3 located on the impermeable bottom layer 13 corresponding to the drain ports 2. When the absorbent core layer 12 is saturated, urine can enter the surface of the impermeable bottom layer 13 through the drain ports 2 and be absorbed by the first absorbent sheets 3. The drain ports 2 located on the upper and lower sides of the absorbent core layer 12 and the first absorbent sheets 3 located on the impermeable bottom layer 13 corresponding to the drain ports 2 form a secondary urine absorption mechanism. When the absorbent core layer 12 is saturated, excess urine can enter the surface of the impermeable bottom layer 13 through the drain ports 2 and be absorbed by the first absorbent sheets 3, preventing urine from accumulating on the surface of the impermeable bottom layer 13, further improving the leak-proof performance of the diaper and extending its usage time.

[0022] Furthermore, the upper surface of the absorbent core layer 12 is provided with a guide groove 4 connected to the drain port 2. The guide groove 4 on the upper surface of the absorbent core layer 12 connected to the drain port 2 can guide urine to flow quickly to the drain port 2, accelerate the urine discharge speed, improve the utilization efficiency of the absorbent core layer 12, and the design of the guide groove 4 makes the distribution of urine in the absorbent core layer 12 more uniform, avoids the leakage problem caused by local absorption saturation, and further enhances the absorption and leakage prevention performance of the diaper.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A leak-proof paper diaper, characterized by: The diaper includes a diaper body, defined as extending longitudinally along its length and laterally along its width. The diaper body has a front waist area, a crotch area, and a back waist area distributed along one side of the longitudinal direction. The diaper body includes a liquid-permeable top layer, an absorbent core layer, a liquid-impermeable bottom layer, and adhesive components. The absorbent core layer is laminated to the upper surface of the liquid-impermeable bottom layer, and the liquid-permeable top layer is laminated to the upper surface of the absorbent core layer. The liquid-permeable top layer includes a hydrophilic nonwoven fabric, two hydrophobic nonwoven fabrics, a first elastic band, a second elastic band, and a back leak-proof sheet. The hydrophilic nonwoven fabric covers the upper surface and two laterally adjacent sides of the absorbent core layer. The two hydrophobic nonwoven fabrics are respectively fixedly connected to the two laterally adjacent sides of the hydrophilic nonwoven fabric. The first elastic band is located at the free end of the hydrophobic nonwoven fabric, forming a three-dimensional protective barrier. The back leak-proof sheet is located laterally... The back leak-proof sheet is laminated to two three-dimensional guardrails on both sides and distributed in the back waist area. The longitudinal outer side of the back leak-proof sheet is laminated to a hydrophilic non-woven fabric. The second elastic band is laminated to the back leak-proof sheet. The two transverse sides of the back leak-proof sheet have extension portions extending outward. The adhesive assembly includes a first hook and loop fastener, two first hook and loop sub-tapes, a second hook and loop fastener, and two second hook and loop sub-tapes. One end of each of the two first hook and loop sub-tapes is laminated to the extension portion. The first hook and loop fastener is located on the outer surface of the front waist area of ​​the diaper body and extends in the transverse direction of the front waist area. One end of each of the two second hook and loop sub-tapes is laminated to the transverse sides of the diaper body and distributed in the front waist area. The second hook and loop fastener is located on the outer surface of the back waist area of ​​the diaper body and extends in the transverse direction of the back waist area.

2. The leak-proof diaper according to claim 1, characterized in that: The absorbent core layer is filled with a sponge layer, and the foam skeleton of the sponge layer is filled with water-absorbing resin particles. The water-absorbing resin particles include any one or a combination of at least two of sodium polyacrylate particles, polyacrylamide particles, and polyoxyethylene particles. The sponge layer includes a polyester type sponge layer or a polyether type sponge layer.

3. The leak-proof diaper according to claim 2, characterized in that: The particle size of the water-absorbent resin particles is 30 to 200 mesh, and the apparent density of the water-absorbent resin particles in the sponge layer is 5 to 30 g / m 3 .

4. The leak-proof diaper according to any one of claims 1 to 3, characterized in that: It also includes drainage ports located on the upper and lower sides of the absorbent core layer, and a first absorbent sheet located on the impermeable bottom layer corresponding to the location of the drainage port; when the absorbent core is saturated, urine can enter the surface of the impermeable bottom layer through the drainage port and be absorbed by the first absorbent sheet.

5. The leak-proof diaper according to claim 4, characterized in that: The upper surface of the absorbent core layer is provided with a guide groove that is connected to the drain port.

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