Reinforced leakproof paper diaper with suspended core

Abstract

The utility model relates to the technical field of absorption products, in particular to a reinforced leakage-proof suspension core paper diaper which comprises an absorption body composed of a surface layer, a flow guide layer, a composite core, a leakage-proof bottom film and bottom layer non-woven fabric which are sequentially connected, and leakage-proof partition edges arranged on the two sides of the composite core. The lower surface of the leakage-proof core body is provided with a second adhesive tape, the leakage-proof core body is connected with one end of the leakage-proof bottom film and one end of the leakage-proof partition edge through the second adhesive tape, the edges of the left side and the right side of the lower surface of the composite core body are provided with first adhesive tapes, and the edges of the left side and the right side of the lower surface of the composite core body are connected with the leakage-proof bottom film through the first adhesive tapes; according to the leakage-proof paper diaper, the leakage-proof core bodies are additionally arranged at the front end and the rear end of the composite core body, and the second adhesive tapes are arranged on the lower surfaces of the leakage-proof core bodies, so that the leakage-proof core bodies are tightly connected with the leakage-proof bottom film and the leakage-proof partition edges, leakage of urine in the front-back direction is effectively prevented, and the leakage-proof performance of the paper diaper is further improved.

Description

Technical Field

[0001] This utility model relates to the field of absorbent materials technology, and specifically discloses a suspended core diaper with enhanced leak prevention. Background Technology

[0002] As a new generation of products, suspended core diapers offer a significant improvement in absorbency compared to traditional diapers. Specifically, the leak-proof bottom film and the bottom non-woven fabric of the suspended core diaper bend downwards below the composite core, forming a hollow area together with the composite core, known as the "back pocket." This structure not only increases the diaper's liquid storage capacity but also ensures that urine is safely confined within the designated area, reducing the risk of side leakage.

[0003] However, despite the numerous advantages that suspended core diapers offer in terms of absorption and leak prevention, existing products still have certain shortcomings. In particular, regarding the leak prevention mechanism, although conventional leak-proof side panels and leak-proof bottom films are used as the basic leak-proof structure, the front and rear lower surfaces of the core are usually directly laminated with the leak-proof bottom film, lacking a more refined leak-proof structural design. This direct lamination method may lead to poor leak prevention performance if the lamination process is not ideal or the materials are not properly selected. Especially in the edge areas of the front and rear of the core, due to the dynamic flow of urine and the constant changes in the baby's position, front and back leaks are prone to occur, affecting the overall performance of the diaper and the user experience.

[0004] To address the aforementioned issues, one approach to improving the leak-proof performance of diapers with suspended cores is to introduce front and rear leak-proof barriers at the front and rear ends of the core while preserving its excellent absorbency. Utility Model Content

[0005] To address the technical deficiencies in the background art, this utility model proposes a suspended core diaper with enhanced leak prevention, solving the aforementioned technical problems and meeting practical needs. The specific technical solution is as follows:

[0006] A leak-proof suspended core diaper includes an absorbent body composed of a top layer, a distribution layer, a composite core, a leak-proof bottom film, and a bottom non-woven fabric connected in sequence, and leak-proof side panels disposed on both sides of the composite core. The lower surfaces of the front and rear ends of the composite core are provided with leak-proof cores. The leak-proof side panels include a water-repellent non-woven fabric disposed on the outer layer, a side panel film sandwiched between the water-repellent non-woven fabrics, and a three-dimensional elastic band. One end of the leak-proof side panel is located below the composite core and the left and right sides of the leak-proof core, and the other end of the leak-proof side panel is bonded to the bottom non-woven fabric. The lower surface of the leak-proof core is provided with a second adhesive strip, and the leak-proof core is connected to the leak-proof bottom film and one end of the leak-proof side panel through the second adhesive strip. The left and right edges of the lower surface of the composite core are provided with a first adhesive strip, and the left and right edges of the lower surface of the composite core are connected to the water-repellent non-woven fabric of the leak-proof side panel through the first adhesive strip.

[0007] As a further technical solution of this utility model, the leak-proof bottom film bends downward below the composite core and surrounds the composite core to form a hollow back pocket.

[0008] As a further technical solution of this utility model, the flow guiding layer is disposed on the upper surface of the composite core, the left and right edges of the surface layer extend to the left and right sides of the composite core and cover the flow guiding layer, the composite core and the leak-proof core downward, the left and right edges of the surface layer are flush with the lower surfaces of the composite core and the leak-proof core and are respectively connected to the corresponding first adhesive tape and second adhesive tape.

[0009] As a further technical solution of this utility model, one end of the leak-proof side-blocking water-repellent non-woven fabric extends to both sides of the diaper width direction and is combined with the bottom non-woven fabric, and leg elastic bands are provided between the bottom non-woven fabric and the water-repellent non-woven fabric.

[0010] As a further technical solution of this utility model, the other end of the water-repellent non-woven fabric of the leak-proof side extends from the composite core and the leak-proof core towards the middle of the diaper, and is bonded to the composite core and the leak-proof core respectively by the first adhesive tape and the second adhesive tape.

[0011] As a further technical solution of this utility model, one end of the partition film is placed inside the free end of the leak-proof partition, and the other end of the partition film is placed below the end where the water-repellent non-woven fabric is bonded to the composite core and the leak-proof core.

[0012] As a further technical solution of this utility model, the upper surface of the end of the partition film placed below the composite core and the leak-proof core is bonded to the water-repellent non-woven fabric by hot melt adhesive, and the lower surface of the end of the partition film placed below the composite core and the leak-proof core is bonded to the edge position of the corresponding side of the leak-proof bottom film by hot melt adhesive.

[0013] The beneficial effects of this utility model are as follows:

[0014] The composite core of this invention has leak-proof cores at both ends, which are connected to the leak-proof bottom film and leak-proof partitions via a second adhesive tape, forming a front and rear leak-proof structure that effectively prevents front and back leakage. The leak-proof partitions effectively prevent side leakage of urine. The partition film inside the leak-proof partitions is bonded to the leak-proof bottom film with hot melt adhesive to form a continuous leak-proof film structure, further enhancing the leak-proof effect. The leak-proof bottom film and the bottom non-woven fabric bend downwards below the composite core, forming a hollow back pocket with the composite core, increasing the liquid storage capacity of the diaper and thus further improving the absorbency of the diaper. Attached Figure Description

[0015] Figure 1 This is one of the partial cross-sectional structural views of the diaper described in this utility model.

[0016] Figure 2 This is a second partial cross-sectional view of the diaper described in this utility model.

[0017] Figure 3 This is the third partial cross-sectional view of the diaper described in this utility model.

[0018] Figure 4 This is a top view of the diaper described in this utility model.

[0019] in:

[0020] 1-Top layer; 2-Flow guiding layer; 3-Composite core; 31-First adhesive tape; 4-Leak-proof core; 41-Second adhesive tape; 5-Leak-proof bottom membrane; 6-Bottom non-woven fabric; 61-Leg elastic band; 7-Leak-proof side panel; 71-Water-repellent non-woven fabric; 72-Side panel membrane; 73-3D elastic band; 8-Back pocket. Detailed Implementation

[0021] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0022] Combination Figures 1 to 4As shown, a leak-proof suspended core diaper includes an absorbent body composed of a top layer 1, a diversion layer 2, a composite core 3, a leak-proof bottom film 5, and a bottom non-woven fabric 6 connected in sequence, and leak-proof partitions 7 disposed on both sides of the composite core 3. Leak-proof cores 4 are provided on the lower surfaces of the front and rear ends of the composite core 3. The leak-proof partitions 7 include a water-repellent non-woven fabric 71 disposed on the outer layer, a partition film 72 sandwiched between the water-repellent non-woven fabrics 71, and a three-dimensional elastic band 73. One end of the leak-proof partition 7 is positioned... Below the left and right sides of the composite core 3 and the leak-proof core 4, the other end of the leak-proof partition 7 is bonded to the bottom non-woven fabric 6. The lower surface of the leak-proof core 4 is provided with a second adhesive tape 41. The leak-proof core 4 is connected to the leak-proof bottom film 5 and one end of the leak-proof partition 7 through the second adhesive tape 41. The left and right edges of the lower surface of the composite core 3 are provided with a first adhesive tape 31. The left and right edges of the lower surface of the composite core 3 are connected to the water-repellent non-woven fabric 71 of the leak-proof partition 7 through the first adhesive tape 31.

[0023] Furthermore, in the above structure, the leak-proof bottom membrane 5 bends downward below the composite core 3 and surrounds the composite core 3 to form a hollow back pocket 8.

[0024] It should be noted that the first adhesive tape 31 and the second adhesive tape 41 in the above structure can be adhesive materials with adhesive function such as hot melt adhesive.

[0025] This invention provides leak-proof cores 4 at both ends of the composite core 3. The leak-proof cores 4 are located at both ends of the back pocket 8. The leak-proof cores 4 are connected to the leak-proof bottom film 5 and the leak-proof partition 7 through the second adhesive tape 41, forming a front and rear leak-proof structure. The leak-proof cores 4 can effectively absorb and lock the urine in the front and rear parts of the back pocket 8, and increase the overall absorbency of the diaper, preventing the possibility of urine leaking from the front or rear of the diaper.

[0026] The outer layer of the leak-proof side panel 7 of this utility model is made of water-repellent non-woven fabric 71, which can effectively block liquid penetration and prevent urine from leaking from the side of the diaper. A side panel film 72 is sandwiched between the water-repellent non-woven fabric 71. The side panel film 72 is bonded to the leak-proof bottom film 5 with hot melt adhesive to form a continuous leak-proof film structure, which further enhances the leak-proof performance of the side. A three-dimensional elastic band 73 is set in the leak-proof side panel 7, which can make the side panel fit better to the baby's thigh root, forming a three-dimensional leak-proof barrier to prevent urine from leaking from the leg side.

[0027] The composite core 3 of this invention serves as the main absorbent layer, which can quickly absorb and lock in a large amount of urine, reduce the flow of urine in the diaper, and reduce the risk of side leakage. The leak-proof bottom film 5 bends downward below the composite core 3 and surrounds the composite core 3 to form a hollow back pocket 8. The back pocket 8 can increase the liquid storage capacity of the diaper, thereby improving the absorbency of the diaper.

[0028] This invention features a first adhesive strip 31 on the left and right edges of the lower surface of the composite core 3, and a second adhesive strip 41 on the lower surface of the leak-proof core 4. The first adhesive strip 31 and the second adhesive strip 41 tightly connect the composite core 3, the leak-proof core 4, the leak-proof bottom membrane 5, and the leak-proof partition 7, ensuring the stability of each layer and preventing urine leakage from the joints.

[0029] As one of the preferred embodiments of this utility model, such as Figures 1 to 3 As shown, the flow guiding layer 2 is disposed on the upper surface of the composite core 3. The left and right edges of the surface layer 1 extend to the left and right sides of the composite core 3 and cover the flow guiding layer 2, the composite core 3 and the leak-proof core 4 downwards. The left and right edges of the surface layer 1 are flush with the lower surfaces of the composite core 3 and the leak-proof core 4 and are respectively connected to the corresponding first adhesive tape 31 and second adhesive tape 41.

[0030] In the above structure, the left and right edges of the surface layer 1 extend towards the left and right sides of the composite core 3 and wrap downwards around the diversion layer 2, the composite core 3, and the leak-proof core 4. The wrapping design forms a tight structure, ensuring that each layer will not shift or deform during the use of the diaper, maintaining the overall stability of the diaper, and allowing urine to be quickly transferred downwards and absorbed by the composite core 3. The left and right edges of the surface layer 1 are flush with the lower surfaces of the composite core 3 and the leak-proof core 4 and are connected by the first adhesive tape 31 and the second adhesive tape 41, further enhancing the sealing of the structure and preventing urine from leaking out from the connection.

[0031] As one of the preferred embodiments of this utility model, such as Figure 1 and Figure 3 As shown, one end of the water-repellent nonwoven fabric 71 of the leak-proof side 7 extends to both sides of the diaper width direction and is combined with the bottom nonwoven fabric 6. Leg elastic bands 61 are provided between the bottom nonwoven fabric 6 and the water-repellent nonwoven fabric 71.

[0032] In the above structure, the leg elastic band 61 is located between the bottom non-woven fabric 6 and the water-repellent non-woven fabric 71, which can closely fit the baby's leg contour and improve the comfort of wearing the diaper. At the same time, the elasticity of the leg elastic band 61 can also help the diaper better adapt to the baby's leg movements and maintain a good fit. The composite of the water-repellent non-woven fabric 71 and the bottom non-woven fabric 6 enhances the stability of the internal connection of the leak-proof side panel 7. In addition, the leg elastic band 61 further enhances the stability of the diaper in the leg area, making it less likely to deform or fall off during use.

[0033] As one of the preferred embodiments of this utility model, such as Figures 1 to 3As shown, the other end of the water-repellent nonwoven fabric 71 of the leak-proof side 7 extends towards the middle of the diaper below the composite core 3 and the leak-proof core 4, and is bonded to the composite core 3 and the leak-proof core 4 respectively through the first adhesive tape 31 and the second adhesive tape 41.

[0034] In the above structure, the other end of the water-repellent nonwoven fabric 71 extends towards the middle of the diaper and is connected to the composite core 3 and the leak-proof core 4 by adhesive tape, so that the leak-proof partition 7 is tightly integrated with the main structure of the diaper to form a continuous leak-proof barrier, which can effectively prevent urine from leaking out from the side of the diaper. The water-repellent nonwoven fabric 71 is bonded to the composite core 3 and the leak-proof core 4 by the first adhesive tape 31 and the second adhesive tape 41, which can effectively fix the position of the leak-proof partition 7 and prevent it from shifting or deforming during the use of the diaper, ensuring that the leak-proof partition 7 is always in the best leak-proof position.

[0035] As one of the preferred embodiments of this utility model, such as Figures 1 to 3 As shown, one end of the partition film 72 is placed inside the free end of the leak-proof partition 7, and the other end of the partition film 72 is placed below the end of the water-repellent nonwoven fabric 71 that is bonded to the composite core 3 and the leak-proof core 4.

[0036] Furthermore, in the above structure, the upper surface of one end of the partition film 72 located below the composite core 3 and the leak-proof core 4 is bonded to the water-repellent nonwoven fabric 71 by hot melt adhesive, and the lower surface of one end of the partition film 72 located below the composite core 3 and the leak-proof core 4 is bonded to the edge position of the corresponding side of the leak-proof bottom film 5 by hot melt adhesive.

[0037] With the above structure, it should be further explained that the side separator 72 is bonded to the water-repellent nonwoven fabric 71 and the leak-proof bottom film 5 with hot melt adhesive to form a side leak-proof structure, which can effectively block urine from seeping from the side of the diaper and prevent side leakage. The overlapping and bonding of the side separator 72 with the water-repellent nonwoven fabric 71 and the leak-proof bottom film 5 avoids the possibility of liquid leakage from the joint. The bonding of the side separator 72 with the water-repellent nonwoven fabric 71 and the leak-proof bottom film 5 with hot melt adhesive can effectively fix the position of the leak-proof side separator 7 and prevent it from shifting or deforming during the use of the diaper.

[0038] In addition, the side separator 72 and the leak-proof bottom film 5 are bonded together with hot melt adhesive, so that the leak-proof side separator 7 and the leak-proof bottom film 5 together form a continuous leak-proof film structure, which further enhances the overall leak-proof effect of the diaper.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A leak-proof suspended core diaper, comprising an absorbent body composed of a top layer (1), a flow-guiding layer (2), a composite core (3), a leak-proof bottom film (5), and a bottom non-woven fabric (6) connected in sequence, and leak-proof side panels (7) disposed on both sides of the composite core (3), characterized in that, The lower surfaces of the front and rear ends of the composite core (3) are provided with a leak-proof core (4). The leak-proof partition (7) includes a water-repellent nonwoven fabric (71) on the outer layer, a partition film (72) sandwiched between the water-repellent nonwoven fabric (71), and a three-dimensional elastic band (73). One end of the leak-proof partition (7) is placed below the left and right sides of the composite core (3) and the leak-proof core (4). The other end of the leak-proof partition (7) is bonded to the bottom nonwoven fabric (6). The lower surface of the leak-proof core (4) is provided with a second adhesive tape (41). The leak-proof core (4) is connected to the leak-proof bottom film (5) and one end of the leak-proof partition (7) through the second adhesive tape (41). The left and right edges of the lower surface of the composite core (3) are provided with a first adhesive tape (31). The left and right edges of the lower surface of the composite core (3) are connected to the water-repellent nonwoven fabric (71) of the leak-proof partition (7) through the first adhesive tape (31).

2. The reinforced leak-proof suspended core diaper according to claim 1, characterized in that, The leak-proof bottom membrane (5) bends downward below the composite core (3) and surrounds the composite core (3) to form a hollow back pocket (8).

3. The reinforced leak-proof suspended core diaper according to claim 1, characterized in that, The flow guiding layer (2) is disposed on the upper surface of the composite core (3). The left and right edges of the surface layer (1) extend to the left and right sides of the composite core (3) and cover the flow guiding layer (2), the composite core (3) and the leak-proof core (4) downwards. The left and right edges of the surface layer (1) are flush with the lower surfaces of the composite core (3) and the leak-proof core (4) and are respectively connected to the corresponding first adhesive tape (31) and second adhesive tape (41).

4. A reinforced leak-proof suspended core diaper according to claim 1, characterized in that, One end of the water-repellent nonwoven fabric (71) of the leak-proof side panel (7) extends to both sides of the diaper width direction and is combined with the bottom nonwoven fabric (6). Leg elastic bands (61) are provided between the bottom nonwoven fabric (6) and the water-repellent nonwoven fabric (71).

5. A reinforced leak-proof suspended core diaper according to claim 1, characterized in that, The other end of the water-repellent nonwoven fabric (71) of the leak-proof side panel (7) extends towards the middle of the diaper below the composite core (3) and the leak-proof core (4), and is bonded to the composite core (3) and the leak-proof core (4) respectively by the first adhesive tape (31) and the second adhesive tape (41).

6. A reinforced leak-proof suspended core diaper according to claim 1, characterized in that, One end of the partition film (72) is placed inside the free end of the leak-proof partition (7), and the other end of the partition film (72) is placed below the end of the water-repellent nonwoven fabric (71) that is bonded to the composite core (3) and the leak-proof core (4).

7. A reinforced leak-proof suspended core diaper according to claim 6, characterized in that, The upper surface of the partition film (72) at the lower end of the composite core (3) and the leak-proof core (4) is bonded to the water-repellent nonwoven fabric (71) by hot melt adhesive. The lower surface of the partition film (72) at the lower end of the composite core (3) and the leak-proof core (4) is bonded to the edge of the leak-proof bottom film (5) on the corresponding side by hot melt adhesive.

Images