Composite core structure capable of improving air permeability of paper diaper
By using a sandwich-structured composite core in the diaper, and utilizing alternating hot-air fluffy fiber bundles and super absorbent polymer strips, the problem of poor breathability in diapers is solved, the absorbency is improved, the risk of leakage is reduced, and the diaper is kept dry.
Patent Information
- Application Number
- CN202422798018.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Current disposable diapers have poor breathability, resulting in insufficient absorbency and easy leakage. They are especially uncomfortable to use at night and may cause diaper rash in infants.
The composite core with a sandwich structure includes alternating bundles of hot-air fluffy fibers and strips of superabsorbent polymer resin. The alternating design of the upper and lower layers of absorbent resin improves the diffusion rate of urine and the utilization rate of superabsorbent polymer resin, forming an air channel to keep the skin dry.
It improves the breathability and absorbency of diapers, reduces the probability of backflow and leakage, keeps diapers dry, and avoids problems such as diaper rash.
Smart Images
Figure CN223569539U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to paper diaper technical field more specifically, it relates to a compound core structure that can promote paper diaper air permeability. BACKGROUND
[0002] Paper diaper is a disposable sanitary product, mainly used for babies and the adult who cannot move conveniently, its main function is to absorb urine and excrement, keeps the user's skin dry and clean, reduces the excrement to the skin irritation, reduces the incidence probability of diaper rash and other skin problems.
[0003] At present, along with the steady growth of economy, the disposable sanitary product industry especially baby paper diaper growth is remarkable, promotes more product categories paper diaper product to pour into the market, this also makes the parents have more and higher quality requirement on the choice of baby paper diaper.
[0004] However, the current consumer's use pain point for paper diaper product, the most troubled still is that paper diaper poor water absorption problem, including unable to instant absorption, water absorption is insufficient, urine leakage or reverse osmosis is serious, especially when using at night, the existence of these problems can greatly reduce the comfort of paper diaper, also can induce the probability of baby red buttocks, present a compound core structure that can promote paper diaper air permeability to improve the existing problems. UTILITY MODEL CONTENT
[0005] In view of the deficiencies existing in the prior art, the utility model aims at providing a compound core structure that can promote paper diaper air permeability.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] A compound core structure that can promote paper diaper air permeability, comprising a compound core, the compound core includes surface layer, absorption layer and bottom layer arranged in turn from top to bottom.
[0008] Among them, the absorption layer includes first absorption resin layer, flow guide layer and second absorption resin layer arranged in turn from top to bottom.
[0009] The first absorption resin layer is combined alternately and side by side by first layer absorption resin strip and first layer flow guide fiber.
[0010] The second absorption resin layer is combined alternately and side by side by second layer flow guide fiber and second layer absorption resin strip.
[0011] Through adoption of the above technical scheme, in the whole composite core structure, the first and second absorption resin layers play a key role, the upper and lower two layers of absorption resin layers are combined with hot air fluffy fiber bundles and high molecular absorption resin strips alternately, when the surface layer high molecular water absorption resin is fully saturated and expanded to cause liquid permeability to reduce, the left and right drainage of the hot air fluffy fiber bundles will enter the lower high molecular layer from the two sides of the high molecular resin layer, effectively improving the absorption amount and utilization rate of the high molecular resin.
[0012] The utility model further sets up: the material quality of surface layer is dustless paper, and the grammage is between 35-45gsm.
[0013] The utility model further sets up: the material quality of bottom layer is hydrophilic non - woven fabric, and the grammage is between 10-15gsm.
[0014] The utility model further sets up: the flow guide layer is spunlace wood plank cloth, and the grammage is between 50-70gsm.
[0015] The utility model further sets up: first layer absorption resin strip and first layer flow guide fiber, second layer flow guide fiber and second layer absorption resin strip are alternately arranged along the length of composite core respectively, and mutually parallel, first layer absorption resin strip and first layer flow guide fiber of the first absorption resin layer are staggered parallel arrangement, second layer flow guide fiber and second layer absorption resin strip of the second absorption resin layer are staggered parallel arrangement.
[0016] Through adoption of the above technical scheme, utilize the high molecular absorption resin layer structure of sandwich structure, through the hot air fluffy fiber bundle and high molecular resin mixed fiber layer of upper and lower two layers of alternately arranged, make urine can more quickly spread in the core structure, sufficiently improve the utilization rate of superabsorbent polymer, and reduce the probability of back seepage and urine leakage.
[0017] The utility model further sets up: surface layer, absorption layer and bottom layer are connected through the way of hot melt adhesive.
[0018] The utility model further sets up: the composite core still includes the wrapping layer, the wrapping layer wraps the bottom, both sides and upper edge of composite core, and the material quality of the cladding layer is hydrophilic non - woven fabric.
[0019] Summarized above, the present application includes following at least one beneficial technical effect:
[0020] 1, by setting sandwich structure, utilize the high molecular absorption resin layer structure of sandwich structure, through the hot air fluffy fiber bundle and high molecular resin mixed fiber layer of upper and lower two layers of alternately arranged, make urine can more quickly spread in the core structure, sufficiently improve the utilization rate of superabsorbent polymer, and reduce the probability of back seepage and urine leakage.
[0021] 2、By setting the first absorption resin layer and the second absorption resin layer, the first absorption resin layer and the second absorption resin layer play a key role in the whole composite core structure, and the upper and lower absorption resin layers are combined with hot air fluffy fiber bundles and high molecular absorption resin strips alternately, when the surface high molecular water absorption resin is fully saturated and expanded to reduce the liquid permeability, the left and right drainage of the hot air fluffy fiber bundle will enter the lower high molecular layer from both sides of the high molecular resin layer, effectively improving the absorption amount and utilization rate of the high molecular resin.
[0022] 3、By setting the composite core structure, the hot air fluffy fiber bundle in the upper and lower structure of the composite core structure is also an alternating structure, when the urine is fully absorbed, the alternating structure forms an air channel, which can effectively keep the overall dryness of the diaper, and greatly avoids the problem of red buttocks caused by moisture. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a structure diagram of a composite core structure capable of improving the air permeability of a diaper.
[0024] Figure 2 It is a structure diagram of the first absorption resin layer.
[0025] Figure 3 It is a structure diagram of the second absorption resin layer.
[0026] BRIEF DESCRIPTION OF DRAWINGS: 1, surface layer; 2, first absorption resin layer; 3, flow guide layer; 4, second absorption resin layer; 5, bottom layer; 6, first layer absorption resin strip; 7, first layer flow guide fiber; 8, second layer flow guide fiber; 9, second layer absorption resin strip. DETAILED DESCRIPTION
[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.
[0029] Embodiment one, please refer to Figures 1-3 The present application provides the following technical solutions:
[0030] Please refer to Figure 1 A composite core structure capable of improving the air permeability of a diaper, comprising a composite core, the composite core comprising a surface layer 1, an absorption layer and a bottom layer 5 arranged in order from top to bottom.
[0031] Please refer toFigure 1 The absorption layer comprises a first absorption resin layer 2, a flow guide layer 3 and a second absorption resin layer 4 arranged in sequence from top to bottom.
[0032] Referring to Figure 2 and Figure 3 The first absorption resin layer 2 is composed of first layer absorption resin strips 6 and first layer flow guide fibers 7 arranged alternately and side by side, and the material of the first layer flow guide fibers 7 is high-loft hot air fiber bundle. The alternating arrangement of the first layer absorption resin strips 6 and the first layer flow guide fibers 7 can effectively improve the diffusion capacity of liquid, increase the water absorption effect, ensure the dry performance of the diaper, and greatly avoid the problem of red buttocks caused by moisture.
[0033] Referring to Figure 2 and Figure 3 The second absorption resin layer 4 is composed of second layer flow guide fibers 8 and second layer absorption resin strips 9 arranged alternately and side by side.
[0034] In the entire composite core structure, the first absorption resin layer 2 and the second absorption resin layer 4 play a key role. The upper and lower absorption resin layers are composed of alternating hot air loft fiber bundles and high molecular absorption resin strips. When the surface layer of high molecular water absorption resin is fully saturated and expanded, resulting in a decrease in liquid permeability, the left and right drainage effect of the hot air loft fiber bundle will enter the lower high molecular layer from both sides of the high molecular resin layer, effectively improving the absorption amount and utilization rate of the high molecular resin.
[0035] Referring to Figure 1 The material of the surface layer 1 is dust-free paper with a grammage of 35-45gsm, and the structure is simple.
[0036] Referring to Figure 1 The material of the bottom layer 5 is hydrophilic non-woven fabric with a grammage of 10-15gsm, and the structure is stable.
[0037] Referring to Figure 1 The flow guide layer 3 is a spunlace wood pulp fabric with a grammage of 50-70gsm, which can increase the water absorption and conduction performance.
[0038] Referring to Figure 2 and Figure 3 The first layer absorption resin strips 6 and the first layer flow guide fibers 7, the second layer flow guide fibers 8 and the second layer absorption resin strips 9 are arranged alternately and parallel along the length of the composite core, and the first layer absorption resin strips 6 and the first layer flow guide fibers 7 of the first absorption resin layer 2 are arranged alternately and parallel, and the second layer flow guide fibers 8 and the second layer absorption resin strips 9 of the second absorption resin layer 4 are arranged alternately and parallel.
[0039] The high polymer absorption resin layer structure of the sandwich structure can make the urine spread faster in the core structure, fully improve the utilization rate of the super absorbent resin, and reduce the probability of back seepage and urine leakage.
[0040] Referring to Figure 1 The surface layer 1, the absorption layer, and the bottom layer 5 are connected by hot melt adhesive bonding, and the connection is firm and stable.
[0041] The composite core further includes a wrapping layer that wraps the bottom, two sides, and upper edge of the composite core, and the wrapping layer is made of hydrophilic non-woven fabric.
[0042] In use, the urine contacts the first absorption resin layer 2 through the surface layer 1, and the first absorption resin strip 6 will first absorb part of the liquid. Most of the urine will be quickly drained in three directions of down, left, and right through the alternately distributed hot air fiber bundles. In the process of the first absorption resin layer 2, the downward drainage plays a leading role, and the left and right drainage plays a secondary role. The downward drainage will make the urine be quickly drained along the hot air fluffy fiber bundle to the flow guide layer 3, and then the urine is absorbed by the flow guide layer 3 and further spreads along the flow guide layer 3 until it enters the second absorption resin layer 4. The advantage of the left and right drainage is that it can exert the water absorption of the lower layer of super absorbent resin to a greater extent and improve the utilization efficiency of the polymer resin. Then, when the absorption of the flow guide layer 3 reaches saturation, the urine enters the second absorption resin layer 4. At this time, the left and right drainage plays a leading role, and the downward drainage plays a secondary role. The same as the first absorption resin layer 2, when the urine enters this layer, the second absorption resin strip 9 will absorb a large amount of urine, and the hot air fluffy fiber bundle in contact with the urine will again play a drainage role to continue to spread the urine in the left, right, and downward directions, realizing the fast and efficient water absorption of the second absorption resin layer 4. In particular, the hot air fluffy fiber bundles in the upper and lower structures of the composite core structure are also in an alternating structure. When the urine is fully absorbed, this alternating structure will form an air channel, which can effectively keep the overall dryness of the diaper, and greatly avoid the problem of red buttocks caused by moisture.
[0043] Specifically, urine contacts the first absorption resin layer 2 through the surface layer 1, the first layer of absorption resin strips 6 will first absorb part of the liquid, most of the urine will be quickly drained to the left, right and down directions through the alternately distributed hot air fiber bundles, the downward drainage will make the urine be quickly drained to the flow guide layer 3 along the hot air fluffy fiber bundles, then the urine is absorbed by the flow guide layer 3 and further diffused along the flow guide layer 3 until entering the second absorption resin layer 4, then when the absorption of the flow guide layer 3 reaches saturation, the urine enters the second absorption resin layer 4, when the urine enters the layer, the second layer of absorption resin strips 9 will absorb a large amount of the drained urine, and the hot air fluffy fiber bundles in contact with the urine will again play a role in drainage, continuing to diffuse the urine to the left, right and down directions, realizing the fast and efficient water absorption capacity of the second absorption resin layer 4.
[0044] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.
Claims
1. A composite core structure that improves the breathability of diapers, characterized in that: It includes a composite core, which comprises a surface layer (1), an absorption layer, and a bottom layer (5) arranged sequentially from top to bottom. The absorbent layer includes a first absorbent resin layer (2), a flow guiding layer (3), and a second absorbent resin layer (4) stacked sequentially from top to bottom. The first absorbent resin layer (2) is composed of alternating layers of absorbent resin strips (6) and first layer of guide fibers (7); The second absorbent resin layer (4) is composed of a second layer of guiding fibers (8) and a second layer of absorbent resin strips (9) arranged alternately side by side.
2. The composite core structure for improving the breathability of diapers according to claim 1, characterized in that: The surface layer (1) is made of dust-free paper with a basis weight between 35-45 gsm.
3. The composite core structure for improving the breathability of diapers according to claim 2, characterized in that: The bottom layer (5) is made of hydrophilic nonwoven fabric with a basis weight between 10-15 gsm.
4. The composite core structure for improving the breathability of diapers according to claim 1, characterized in that: The flow guide layer (3) is spunlace wood pulp cloth with a basis weight between 50-70 gsm.
5. The composite core structure for improving the breathability of diapers according to claim 1, characterized in that: The first layer of absorbent resin strip (6), the first layer of guiding fiber (7), the second layer of guiding fiber (8), and the second layer of absorbent resin strip (9) are arranged alternately along the length of the composite core and are parallel to each other. The first layer of absorbent resin strip (6) and the first layer of guiding fiber (7) of the first absorbent resin layer (2) are arranged alternately and in parallel. The second layer of guiding fiber (8) and the second layer of absorbent resin strip (9) of the second absorbent resin layer (4) are arranged alternately and in parallel.
6. The composite core structure for improving the breathability of diapers according to claim 1, characterized in that: The top layer (1), the absorbent layer, and the bottom layer (5) are all connected by hot melt adhesive.
7. The composite core structure for improving the breathability of diapers according to claim 1, characterized in that: The composite core also includes a wrapping layer that wraps the bottom, sides and top edge of the composite core, and the wrapping layer is made of hydrophilic nonwoven fabric.