A breathable paper diaper with a multi-stage gradient punching composite structure

Abstract

The utility model discloses a kind of ventilated paper diaper with multistage gradient punching composite structure, the paper diaper main part includes absorption structure and the waist structure connected in the end of absorption structure, the technical scheme is set in the inverted conical penetration hole of the surface layer, flow guide layer and cladding layer, forms multistage gradient perforation structure, accelerates the penetration speed of liquid, keeps surface layer dry, while, cooperate with the flow guide groove structure of flow guide layer, liquid can be quickly dispersed and locked, avoid local accumulation, the isolation layer forms air circulation passage in paper diaper inside, enhance the air permeability of paper diaper, waist structure uses elastic non-woven fabric and cooperates with through hole, combine air permeation structure, utilize elastic spandex silk auxiliary increase waist circumference elasticity, relative to the waist circumference of traditional single rubber band structure, solve the problem of scratch caused by local stress, while effectively improve the air circulation efficiency of waist region, reduce stuffy feeling.

Description

Technical Field

[0001] This utility model relates to the field of diaper technology, specifically to a breathable diaper with a multi-level gradient perforated composite structure. Background Technology

[0002] The most common daily necessity for babies is the diaper, which is also a general term for disposable diapers, pull-up diapers, and other similar products. Dry diapers allow babies to sleep soundly through the night, and because of their high absorbency, they are commonly known as "disposable diapers." Traditional disposable diapers mainly consist of three layers: a liquid-permeable surface layer, a middle core layer, and a liquid-impermeable bottom layer. The liquid-permeable surface layer and the liquid-impermeable bottom layer are both made of non-woven fabric, while the middle core layer is made of highly absorbent resin.

[0003] Existing disposable diapers generally consist of an absorbent core and a waistband. Typically, the absorbent core is made of multiple layers of materials, including a hydrophilic nonwoven fabric layer, a flow-guiding nonwoven fabric layer, a superabsorbent polymer layer, and a bottom film. Absorbency and elasticity are the main criteria for judging the comfort of a diaper. Diapers with good absorbency can keep the surface in contact with the body dry, increasing user comfort. The waistband usually uses elastic bands, but these elastic bands can easily tighten around the baby, causing marks and potentially injury. In addition, some users have high requirements for breathability when using diapers, but the breathability of PE film is limited. Users often experience sweating in the waist area due to poor breathability of the diaper, which greatly affects the comfort of use. Utility Model Content

[0004] To address the technical deficiencies in the background art, this utility model proposes a breathable diaper with a multi-level gradient perforated composite structure, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows: A breathable diaper with a multi-level gradient perforated composite structure includes a diaper body, wherein the diaper body includes an absorbent structure and a waistband structure connected to the end of the absorbent structure; The absorption structure includes a surface layer, a flow guiding layer, and an absorption core layer arranged sequentially from top to bottom. A plurality of first permeation holes are formed along the thickness direction of the surface layer, and a plurality of second permeation holes are formed along the thickness direction of the flow guiding layer. An isolation layer is provided on the side of the flow guiding layer facing the surface layer. The end portion of the absorbent structure extends into the waist structure, which is formed by folding elastic nonwoven fabric. The waist structure has several through holes in its thickness direction, and the outer end face of the elastic nonwoven fabric is punctured to form breathable micropores corresponding to the overlapping area of ​​the absorbent structure and the waist structure.

[0005] As an improvement to the above solution, a bottom nonwoven fabric is provided below the absorption structure. The two ends of the bottom nonwoven fabric are integrally formed with the waist structure, and a PE film is provided on the side of the bottom nonwoven fabric facing the absorption mechanism.

[0006] As an improvement to the above solution, the waist structure includes an inner waist layer and an outer waist layer that are folded in an inverted U-shape, with elastic spandex yarn sandwiched between the inner waist layer and the outer waist layer.

[0007] As an improvement to the above solution, the elastic structure includes a first elastic region along the upper edge of the waist structure to the end of the absorbent core layer and a second elastic region along both ends of the waist structure to both sides of the absorbent core layer. The first elastic region is provided with a plurality of first elastic spandex filaments extending along the length of the waist structure, and the second elastic region is provided with a plurality of second elastic spandex filaments extending along the length of the waist structure. The gap between two adjacent first elastic spandex filaments is smaller than the gap between two adjacent second elastic spandex filaments.

[0008] As an improvement to the above solution, the two ends of the surface layer extend into the space between the inner and outer layers of the waistband and are bonded to one side of the inner layer of the waistband. The surface of the surface layer is provided with a plurality of first permeation holes arranged in an array to form an inverted cone shape.

[0009] As an improvement to the above solution, the isolation layer is formed by several long polyurethane fibers arranged irregularly in a curled shape, and the flow guiding layer and the isolation layer are bonded together by hot air.

[0010] As an improvement to the above solution, the end face of the flow guiding layer is provided with several flow guiding grooves extending along its length direction, and several inverted conical second permeation holes are pierced between two adjacent flow guiding grooves and at the bottom of the flow guiding grooves.

[0011] As an improvement to the above solution, the outer surface of the absorbent core layer is provided with a coating layer, the two sides of the coating layer extend to the space between the absorbent core layer and the PE membrane, and are bonded to the PE membrane. The end face of the coating layer that is attached to the flow guiding layer is punctured to form several inverted conical third permeation holes.

[0012] The beneficial effects of this utility model are as follows: This technical solution utilizes inverted conical permeable holes on the surface layer, distribution layer, and covering layer to form a multi-level gradient perforation structure, accelerating the liquid penetration speed and keeping the surface layer dry. Combined with the distribution channel structure of the distribution layer, it can quickly disperse and lock in the liquid, preventing localized accumulation. The isolation layer forms an air circulation channel inside the diaper, enhancing its breathability. The waistband structure uses elastic non-woven fabric combined with through-holes, along with a breathable structure, and utilizes elastic spandex fibers to increase waistband elasticity. Compared to traditional waistbands using a single elastic band structure, this solves the problem of marks caused by localized stress, while effectively improving air circulation efficiency in the waist area and reducing stuffiness. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the diaper of this utility model.

[0014] Figure 2 This is a schematic diagram of the unfolded structure of the diaper body of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of the waistband structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the internal structure of the absorption structure of this utility model.

[0017] Figure 5 for Figure 4 Schematic diagram of part A in the middle.

[0018] The structure includes: 1. Absorbent structure; 2. Waistband structure; 21. Through-hole; 22. Inner waistband layer; 23. Outer waistband layer; 24. First elastic zone; 25. Second elastic zone; 26. First elastic spandex filament; 27. Second elastic spandex filament; 3. Surface layer; 31. First permeation hole; 4. Guide layer; 41. Second permeation hole; 42. Guide groove; 5. Absorbent core layer; 51. Covering layer; 52. Third permeation hole; 6. Separation layer; 7. Bottom nonwoven fabric; 71. PE film; 8. Elastic nonwoven fabric; 81. Breathable micropores. Detailed Implementation

[0019] 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.

[0020] like Figures 1 to 5As shown, this utility model discloses a breathable diaper with a multi-level gradient perforated composite structure, including a diaper body. The diaper body includes an absorbent structure 1 and a waistband structure 2 connected to the end of the absorbent structure 1. The waistband structure 2 is connected to the absorbent structure 1. When in use, the waistband structure 2 is tightened around the user's waist through an elastic structure, and the absorbent structure 1 is pulled up at the user's crotch position through the waistband structure 2. Specifically, in the technical solution of the absorption structure 1, the end portion of the absorption structure 1 extends into the waist structure 2. The absorption structure 1 includes a surface layer 3, a flow guiding layer 4, and an absorption core layer 5 arranged sequentially from top to bottom. A plurality of first permeation holes 31 are formed along the thickness direction of the surface layer 3, and a plurality of second permeation holes 41 are formed along the thickness direction of the flow guiding layer 4. The outer surface of the absorption core layer 5 is provided with a coating layer 51, and the end face of the coating layer 51 that is in contact with the flow guiding layer 4 is punctured to form a plurality of inverted conical third permeation holes 52. It should be noted that during the permeation process, the liquid passes through the surface layer 3, the flow guiding layer 4, and the coating layer 51 in sequence before entering the absorbent core layer 5. The first permeation hole 31, the second permeation hole 41, and the third permeation hole 52 together form a multi-level gradient flow guiding system, which significantly improves the liquid absorption efficiency. Furthermore, the inverted conical design of the permeation holes can accelerate the liquid's downward permeation speed while preventing liquid backflow, keeping the surface of the surface layer 3 dry, reducing the feeling of moisture when in contact with the baby's skin, thereby improving the comfort of use.

[0021] Specifically, in the technical solution of the flow guiding layer 4, the end face of the flow guiding layer 4 is provided with a plurality of flow guiding grooves 42 extending along its length direction, and a plurality of inverted conical second permeation holes 41 are pierced between two adjacent flow guiding grooves 42 and at the bottom of the flow guiding grooves 42. It should be noted that the flow channel 42 structure provided in the flow guiding layer 4 can further guide the liquid to diffuse evenly to both sides of the absorption core layer 5, avoiding leakage problems caused by excessive local liquid accumulation. Combined with the gradient distribution of the second permeation hole 41, the liquid can be quickly conducted laterally and penetrated downward in the flow guiding layer 4.

[0022] Furthermore, in the above scheme, the outer surface of the absorbent core layer 5 is provided with a coating layer 51. The two sides of the coating layer 51 extend to the space between the absorbent core layer 5 and the PE film 71 and are bonded to the PE film 71. The end face of the coating layer 51 that is attached to the flow guiding layer 4 is punctured to form a plurality of inverted conical third permeation holes 52. The third permeation holes 52 provided at the attachment point of the coating layer 51 and the flow guiding layer 4 form a three-dimensional permeation network, which together with the permeation holes of the surface layer 3 and the flow guiding layer 4 constitutes a multi-level gradient flow guiding system.

[0023] Furthermore, in the above scheme, the flow guiding layer 4 is provided with an isolation layer 6 on the side facing the surface layer 3. The isolation layer 6 is formed by several long polyurethane fibers arranged irregularly in a curled shape. The flow guiding layer 4 and the isolation layer 6 are bonded together by hot air.

[0024] It should be noted that the isolation layer 6 adopts a design of long polyurethane fibers arranged in a coil, which not only ensures the channel for liquid to penetrate downwards, but also creates air circulation gaps inside the diaper. This structure can effectively reduce the contact area between the surface layer 3 and the diversion layer 4, thereby reducing stuffiness. At the same time, the gaps between the fibers can help the diversion layer 4 to quickly expel moisture. In practical applications, the fiber density of the isolation layer 6 can be adjusted according to different usage scenarios. For example, the fiber gaps can be increased in the summer version to improve breathability, while the gaps can be appropriately reduced in the winter version to maintain temperature.

[0025] In the technical solution of the waist structure 2 of this utility model, the waist structure 2 is formed by folding elastic non-woven fabric 8, and the thickness direction of the waist structure 2 is provided with a plurality of through holes 21. The outer end face of the elastic non-woven fabric 8 is punctured to form breathable micropores 81 corresponding to the overlapping area of ​​the absorbent structure 1 and the waist structure 2. Furthermore, in the above scheme, the waist structure 2 includes an inner waist layer 22 and an outer waist layer 23 that are folded in an inverted U-shape, and elastic spandex yarn is sandwiched between the inner waist layer 22 and the outer waist layer 23.

[0026] Furthermore, in the above scheme, the elastic structure includes a first elastic region 24 along the upper edge of the waist structure 2 to the end of the absorbent core layer 5 and a second elastic region 25 along both ends of the waist structure 2 to both sides of the absorbent core layer 5. The first elastic region 24 is provided with a plurality of first elastic spandex filaments 26 extending along the length of the waist structure 2, and the second elastic region 25 is provided with a plurality of second elastic spandex filaments 27 extending along the length of the waist structure 2. The gap between two adjacent first elastic spandex filaments 26 is smaller than the gap between two adjacent second elastic spandex filaments 27.

[0027] It should be noted that the waist structure 2 is formed by folding elastic non-woven fabric 8. The elastic spandex yarns sandwiched inside form a first elastic zone 24 and a second elastic zone 25 at different positions of the waist. The elasticity of the zone is controlled by arranging spandex yarns with different gap sizes, which ensures the overall fit of the waist and avoids excessive tightness in some areas.

[0028] The through hole 21 provided on the waist structure 2 directly reduces the contact area between the user's waist and the waist structure 2, and the user's waist skin can directly contact the outside world through the through hole 21. The breathable micropores 81 on the outer side of the elastic nonwoven fabric 8 form air flow channels. Combined with the air circulation design of the isolation layer 6 in the absorption structure 1, the diaper as a whole forms a three-dimensional breathable system from the surface layer 3 to the waistband, effectively improving the problem of stuffiness in the waist area.

[0029] In one embodiment of the present invention, a bottom nonwoven fabric 7 is provided below the absorbent structure 1. The two ends of the bottom nonwoven fabric 7 are integrally formed with the waist structure 2. The two ends of the bottom nonwoven fabric 7 are folded inward to form the waist structure 2. A PE film 71 is provided on the side end of the bottom nonwoven fabric 7 facing the absorbent mechanism.

[0030] Furthermore, in the above scheme, the two ends of the surface layer 3 extend into the space between the inner waist layer 22 and the outer waist layer 23 and are bonded to one side of the inner waist layer 22. The surface of the surface layer 3 is provided with a plurality of first permeation holes 31 arranged in an array and punctured to form an inverted cone shape.

[0031] 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 breathable diaper with a multi-level gradient perforated composite structure, characterized in that, Includes a diaper body, the diaper body including an absorbent structure (1) and a waistband structure (2) connected to the end of the absorbent structure (1). The absorption structure (1) includes a surface layer (3), a flow guiding layer (4) and an absorption core layer (5) arranged sequentially from top to bottom. A plurality of first permeation holes (31) are opened along the thickness direction of the surface layer (3), and a plurality of second permeation holes (41) are opened along the thickness direction of the flow guiding layer (4). An isolation layer (6) is provided on the side of the flow guiding layer (4) facing the surface layer (3). The end portion of the absorbent structure (1) extends into the waist structure (2). The waist structure (2) is formed by folding elastic nonwoven fabric (8). The waist structure (2) has several through holes (21) in the thickness direction. The outer end face of the elastic nonwoven fabric (8) is punctured to form breathable micropores (81) corresponding to the overlapping area of ​​the absorbent structure (1) and the waist structure (2).

2. The breathable diaper with a multi-level gradient perforated composite structure according to claim 1, characterized in that, The bottom layer of the absorbent structure (1) is provided with a non-woven fabric (7), and the two ends of the non-woven fabric (7) are integrally formed with the waist structure (2). The bottom layer of the non-woven fabric (7) is provided with a PE film (71) on the side of the non-woven fabric (7) facing the absorbent mechanism.

3. The breathable diaper with a multi-level gradient perforated composite structure according to claim 1, characterized in that, The waist structure (2) includes an inner waist layer (22) and an outer waist layer (23) that are folded in an inverted U-shape, with elastic spandex yarn sandwiched between the inner waist layer (22) and the outer waist layer (23).

4. The breathable diaper with a multi-level gradient perforated composite structure according to claim 3, characterized in that, The elastic structure includes a first elastic region (24) extending from the upper edge of the waist structure (2) to the end of the absorbent core layer (5) and a second elastic region (25) extending from both ends of the waist structure (2) to both sides of the absorbent core layer (5). The first elastic region (24) is provided with a plurality of first elastic spandex filaments (26) extending along the length direction of the waist structure (2), and the second elastic region (25) is provided with a plurality of second elastic spandex filaments (27) extending along the length direction of the waist structure (2). The gap between two adjacent first elastic spandex filaments (26) is smaller than the gap between two adjacent second elastic spandex filaments (27).

5. The breathable diaper with a multi-level gradient perforated composite structure according to claim 3, characterized in that, The two ends of the surface layer (3) extend into the space between the inner waist layer (22) and the outer waist layer (23) and are bonded to one side of the inner waist layer (22). The surface of the surface layer (3) is provided with a plurality of first permeation holes (31) arranged in an array and punctured to form an inverted cone shape.

6. The breathable diaper with a multi-level gradient perforated composite structure according to claim 1, characterized in that, The isolation layer (6) is formed by several long polyurethane fibers arranged irregularly in a curled shape, and the flow guiding layer (4) and the isolation layer (6) are bonded together by hot air.

7. The breathable diaper with a multi-level gradient perforated composite structure according to claim 1, characterized in that, The end face of the flow guiding layer (4) is provided with a number of flow guiding grooves (42) extending along its length direction. Between two adjacent flow guiding grooves (42) and at the bottom of the flow guiding grooves (42), a number of inverted cone-shaped second permeation holes (41) are pierced.

8. The breathable diaper with a multi-level gradient perforated composite structure according to claim 2, characterized in that, The outer surface of the absorbent core layer (5) is provided with a coating layer (51). The two sides of the coating layer (51) extend between the absorbent core layer (5) and the PE membrane (71) and are bonded to the PE membrane (71). The end face of the coating layer (51) that is attached to the flow guide layer (4) is punctured to form several inverted conical third permeation holes (52).

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