A quick-absorbing baby diaper

Abstract

The utility model relates to the field of paper diaper, provide a kind of rapid infiltration baby paper diaper, including paper diaper body, paper diaper body includes liquid-permeable top layer, upper layer absorbing layer, lower layer absorbing layer, impermeable bottom, upper layer absorbing layer middle part is equipped with the first flow guide groove with opening upwards, and multiple long holes are equipped in upper layer absorbing layer below first flow guide groove;Lower layer absorbing layer middle part is equipped with the second flow guide groove with opening downwards, and second flow guide groove is located below first flow guide groove, and the area of second flow guide groove is less than the area of first flow guide groove, and the outer wall of second flow guide groove is connected with multiple long slots, and long slot extends to the edge of lower layer absorbing layer, and the middle part of liquid-permeable top layer is equipped with first flow guide hole above first flow guide groove. Upper layer first flow guide groove, second flow guide groove, long hole, long slot, first flow guide hole can make urine rapid infiltration, improve the diffusion and absorption speed of urine, prevent urine side leakage, solve the technical problem that paper diaper infiltration speed is slow, prone to side leakage.

Description

Technical Field

[0001] This utility model relates to the field of diapers, and more particularly to a quick-absorbing baby diaper. Background Technology

[0002] Currently, existing baby diaper technologies generally suffer from significant drawbacks, such as slow absorption and insufficient absorption efficiency, when large amounts of urine are rapidly absorbed. Traditional single-layer absorbent core structures lack effective three-dimensional drainage channels, causing urine to accumulate at the top layer and fail to quickly penetrate, easily forming "retention zones" that significantly reduce absorption speed. Experimental data shows that in simulated infant urination scenarios, ordinary diapers can take 8-12 seconds for urine to travel from contact with the top layer to complete absorption by the absorbent layer, far exceeding the ideal 3-5 seconds. This delay not only increases the time urine remains on the surface but also easily triggers "re-leakage"—that is, after absorption saturation, some urine re-leaks due to pressure or gravity, irritating the baby's delicate skin and increasing the risk of diaper rash.

[0003] Furthermore, existing diaper diffusion mechanisms mostly rely on a single channel or simple porous structure, which can easily lead to a "diffusion bottleneck" when dealing with large amounts of urine. For example, some products have channel designs, but due to the channel being too shallow or the pore size being insufficient, they cannot effectively guide urine to diffuse towards the edge of the absorbent layer. This results in excessive concentration of urine in the central area, while the edge absorbent material is not fully utilized. This uneven liquid distribution exacerbates the risk of local saturation. When the baby's activities (such as crawling or rolling over) generate dynamic pressure, the saturated area is prone to breaking through the leak-proof edge restraints, causing side leakage, which becomes a major cause of clothing stains and skin irritation for babies.

[0004] More concerning is the structural stability of existing diapers. Single-layer absorbent cores are prone to clumping after absorbing liquid, where the superabsorbent polymer (SAP) swells and clumps locally, disrupting core uniformity and further reducing liquid diffusion efficiency. While the bottom PE film is waterproof, its poor breathability, combined with an inadequate absorbent layer structure, can easily create a "moisture-filled loop," fostering bacterial growth and exacerbating skin irritation. Therefore, existing diapers suffer from delayed absorption, uneven diffusion, and leakage risks when dealing with large amounts of urine. Utility Model Content

[0005] Therefore, to address the aforementioned problems, this invention proposes a fast-absorbing baby diaper. It solves the technical problem of slow absorption and easy side leakage in diapers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick-absorbing baby diaper includes a diaper body comprising a liquid-permeable top layer, an upper absorbent layer, a lower absorbent layer, and a liquid-impermeable bottom layer. The upper absorbent layer has a first upward-opening channel in its center, and multiple elongated holes below the first channel. The lower absorbent layer has a downward-opening second channel in its center, located below the first channel. The area of ​​the second channel is smaller than that of the first channel. The outer wall of the second channel is connected to multiple elongated channels extending to the edge of the lower absorbent layer. A first channeling hole is located above the first channel in the center of the liquid-permeable top layer.

[0008] Further:

[0009] The elongated hole is a waist-shaped hole.

[0010] The length of the elongated hole is not less than 1.5 cm.

[0011] The diameter of the first guide hole is not less than 1 cm.

[0012] The long groove has an arc-shaped structure, and the curvature of the long groove gradually increases along the edge direction.

[0013] The liquid-permeable top layer is provided with a second flow guide hole on its periphery, and the space of the second flow guide hole is smaller than the diameter of the first flow guide hole.

[0014] The area of ​​the second guide channel is one-half to two-thirds of that of the first guide channel.

[0015] The second guide channel is provided with multiple protrusions, and the height of the protrusions is not less than one-half of the height of the second guide channel.

[0016] The height of the protrusion is two-thirds of the height of the second guide channel.

[0017] The protrusion has an arc-shaped structure.

[0018] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0019] The upper layer's first and second diversion channels, elongated holes, and the first diversion hole allow urine to quickly seep downwards, increasing the diffusion and absorption speed of urine and preventing side leakage. It also improves the diaper's breathability and prevents backflow. Furthermore, the elongated channels, with their curved structure, slow down the flow of liquid along the sides, effectively reducing the risk of side leakage during dynamic activities. Additionally, the curved protrusions within the second diversion channel provide physical support, preventing the absorbent layer from clumping, delaminating, or breaking after absorbing liquid, enhancing the core's tensile strength and lifespan, and maintaining the uniformity of the absorbent layer to ensure high diffusion efficiency. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the diaper of this utility model.

[0021] Figure 2 This is a schematic diagram of the upper absorption layer.

[0022] Figure 3 This is a schematic diagram of the lower absorption layer.

[0023] Figure 4 This is a cross-sectional view of a diaper.

[0024] Figure label:

[0025] 1. Liquid-permeable top layer; 11. First guide hole; 12. Second guide hole; 2. Upper absorbent layer; 21. First guide groove; 22. Elongated hole; 3. Lower absorbent layer; 31. Second guide groove; 32. Elongated groove; 33. Protrusion; 4. Liquid-impermeable bottom layer. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] refer to Figures 1 to 4 This embodiment provides a quick-absorbing baby diaper, including a diaper body. The diaper body includes a liquid-permeable top layer 1, an upper absorbent layer 2, a lower absorbent layer 3, and a liquid-impermeable bottom layer 4. The upper absorbent layer 2 has a first upward-opening channel 21 in the middle, and multiple elongated holes 22 are provided on the upper absorbent layer 2 below the first channel 21. The lower absorbent layer 3 has a second downward-opening channel 31 in the middle, which is located below the first channel 21. The area of ​​the second channel 31 is smaller than that of the first channel 21. The outer wall of the second channel 31 is connected to multiple elongated channels 32, which extend to the edge of the lower absorbent layer 3. The liquid-permeable top layer 1 has a first channeling hole 11 in the middle above the first channel 21.

[0028] In one embodiment, the elongated hole 22 is a waist-shaped hole.

[0029] The aforementioned elongated hole 22 can also be any other elongated hole structure, depending on the specific situation.

[0030] In one embodiment, the length of the elongated hole 22 is not less than 1.5 cm.

[0031] The length of the aforementioned elongated hole 22 can also be less than 1.5cm, depending on the specific situation.

[0032] In one embodiment, the diameter of the first guide hole 11 is not less than 1 cm.

[0033] The diameter of the first guide hole 11 mentioned above can also be less than 1 cm, depending on the specific situation.

[0034] In one embodiment, the long groove 32 has an arc-shaped structure, and the curvature of the long groove 32 gradually increases along the edge direction.

[0035] The previous long slot 32 can also be a straight line, wavy, irregular or other shape, depending on the situation.

[0036] In one embodiment, a second flow guide hole 12 is provided around the liquid-permeable top layer 1, and the space of the second flow guide hole 12 is smaller than the aperture of the first flow guide hole 11.

[0037] The second guide hole 12 mentioned above may not be provided; the specific setting depends on the situation.

[0038] In one embodiment, the area of ​​the second guide channel 31 is one-half to two-thirds of that of the first guide channel 21.

[0039] The area of ​​the second guide channel 31 can also be greater than two-thirds or less than one-half of the area of ​​the first guide channel 21.

[0040] In one embodiment, the second guide channel 31 is provided with a plurality of protrusions 33, the height of the protrusions 33 being two-thirds of the height of the second guide channel 31, and the protrusions 33 having an arc surface structure.

[0041] The height of the protrusion 33 is usually not less than half the height of the second guide groove 31, but it can also be set to be less than half the height of the second guide groove 31, depending on the specific situation.

[0042] The protrusion 33 may also be cylindrical, conical or other shapes, or it may be omitted. The specific arrangement depends on the situation.

[0043] The working principle of this utility model is as follows:

[0044] After the liquid enters the diaper, a large amount of liquid can be guided and seeped down through the first guide hole 11, the first guide groove 21, the elongated hole 22, the second guide groove 31, and the elongated groove 32 in sequence. This allows the urine to seep down quickly, improves the diffusion and absorption speed of the urine, prevents urine side leakage, and at the same time improves the breathability of the diaper and prevents liquid backflow.

[0045] Although the present 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 present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A superabsorbent baby diaper characterized by: The diaper includes a diaper body comprising a liquid-permeable top layer, an upper absorbent layer, a lower absorbent layer, and a liquid-impermeable bottom layer. The upper absorbent layer has a first upward-opening channel in its center, and multiple elongated holes below the first channel. The lower absorbent layer has a downward-opening second channel in its center, located below the first channel. The area of ​​the second channel is smaller than that of the first channel. The outer wall of the second channel is connected to multiple elongated channels extending to the edge of the lower absorbent layer. The liquid-permeable top layer has a first channeling hole above the first channel.

2. The paper diaper according to claim 1, wherein: The elongated hole is a waist-shaped hole.

3. The paper diaper according to claim 1, wherein: The length of the elongated hole is not less than 1.5 cm.

4. The paper diaper according to claim 1, wherein: The diameter of the first guide hole is not less than 1 cm.

5. The paper diaper according to claim 1, wherein: The long groove has an arc-shaped structure, and the curvature of the long groove gradually increases along the edge direction.

6. The paper diaper according to claim 1, wherein: The liquid-permeable top layer is provided with a second flow guide hole on its periphery, and the space of the second flow guide hole is smaller than the diameter of the first flow guide hole.

7. The paper diaper according to claim 1, wherein: The area of ​​the second guide channel is one-half to two-thirds of that of the first guide channel.

8. The paper diaper according to claim 1, wherein: The second guide channel is provided with multiple protrusions, and the height of the protrusions is not less than one-half of the height of the second guide channel.

9. The paper diaper according to claim 8, wherein: The height of the protrusion is two-thirds of the height of the second guide channel.

10. The paper diaper according to claim 8, wherein: The protrusion has an arc-shaped structure.

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