A structure of an adult diaper core
By employing a multi-layered core structure and leak-proof side panel design, this invention addresses the direct relationship between absorbency speed and application scenario design, as well as the direct relationship between absorbency and leak-proof performance in adult diaper cores. It also resolves the issue of insufficient absorbency speed and volume caused by the simple core structure design of current adult diaper diapers, achieving highly efficient absorbency and preventing urine backflow, thus improving wearing comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG KANGSHUN DAILY PROD CO LTD
- Filing Date
- 2025-02-27
- Publication Date
- 2026-05-26
Smart Images

Figure CN224269588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diaper technology, specifically to a core structure for an adult diaper. Background Technology
[0002] In the field of adult care, diapers are an important daily necessity. The design of their core structure directly affects the absorbency, comfort, and leak-proof performance of the product. Most existing adult diaper core structures adopt a relatively simple layered design. The absorbent layer often uses a single material or structure, resulting in limited absorbency speed and volume. This makes it difficult to meet the needs of absorbing large amounts of urine over a long period of time. Urine may also accumulate excessively in certain areas. In addition, the lack of an anti-leakage structure makes it easy for urine to seep through. The poor permeability between the absorbent layer and the surface layer also makes it easy for urine to accumulate on the surface, affecting the wearer's comfort. Utility Model Content
[0003] To achieve the above objectives, this utility model provides the following technical solution: a core structure for an adult diaper.
[0004] Includes: a protective base layer, a reinforcing layer, an anti-permeability layer, an absorbent core layer, a one-way permeability layer, an absorbent surface layer, and a leak-proof partition;
[0005] The reinforcing layer is disposed on the upper wall surface of the protective base layer;
[0006] The impermeable layer is disposed on the upper wall surface of the reinforcing layer;
[0007] The absorbent core layer is disposed on the upper wall surface of the anti-permeability layer;
[0008] The unidirectional permeation layer is disposed on the upper wall surface of the absorbent core layer;
[0009] The absorbent surface layer is disposed on the upper wall surface of the one-way permeation layer;
[0010] The leak-proof partition is located on the outer side of the reinforcing layer, the anti-permeability layer, the absorbent core layer, the one-way permeability layer, and the absorbent surface layer.
[0011] Preferably, the absorbent core layer is composed of multiple strip structures.
[0012] Preferably, a spacer layer is embedded in the absorbent core layer.
[0013] Preferably, the upper wall of the absorbent surface layer is wavy.
[0014] Preferably, the absorbent surface layer has absorbent micropores.
[0015] Preferably, a hydrophobic coating is sprayed onto the upper wall surface of the absorbent layer.
[0016] Beneficial effects
[0017] This utility model provides a core structure for adult diapers, which has the following beneficial effects: This solution uses a multi-layer combined core structure. By introducing a reinforcing layer, an anti-permeability layer, a one-way permeability layer, and leak-proof side panels, it effectively improves the absorbency, leak-proof performance, and comfort of the product. The absorbent core layer is composed of multiple strip structures and has embedded spacer layers, which further improves the absorbency speed and volume while preventing excessive accumulation in certain areas. This solves the problem that most existing adult diaper core structures use relatively simple layer designs, and the absorbent layer often uses a single material or structure, resulting in limited absorbency speed and volume, making it difficult to meet the needs of long-term or large-volume urine absorption. In addition, urine may accumulate excessively in certain areas, and there is no anti-reverse permeability structure, which can easily lead to reverse permeability. The permeability between the absorbent layer and the surface layer is poor, which can easily cause urine to accumulate on the surface and affect the wearer's comfort. Attached Figure Description
[0018] Figure 1 This is a front sectional view of the adult diaper core structure described in this utility model.
[0019] Figure 2 This is a three-dimensional structural diagram of the absorbent surface layer of the adult diaper core structure described in this utility model.
[0020] Figure 3 This is a three-dimensional structural diagram of the absorbent core layer of an adult diaper core structure according to the present invention.
[0021] In the diagram: 1-Protective base layer; 2-Reinforcing layer; 3-Anti-permeability layer; 4-Absorbent core layer; 5-One-way permeability layer; 6-Absorbent surface layer; 7-Leak-proof side barrier; 8-Spacer layer; 9-Absorbent micropores; 10-Hydrophobic coating. Detailed Implementation
[0022] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] Example: Please refer to Figure 1-3 A type of adult diaper core structure.
[0024] Includes: 1. Protective base layer; 2. Reinforcing layer; 3. Impermeable layer; 4. Absorbent core layer; 5. One-way permeable layer; 6. Absorbent surface layer; and 7. Leak-proof partition.
[0025] The reinforcing layer 2 is disposed on the upper wall surface of the protective bottom layer 1;
[0026] The impermeable layer 3 is disposed on the upper wall surface of the reinforcing layer 2;
[0027] The absorbent core layer 4 is disposed on the upper wall surface of the anti-permeability layer 3;
[0028] The one-way permeation layer 5 is disposed on the upper wall surface of the absorbent core layer 4;
[0029] The absorbent surface layer 6 is disposed on the upper wall surface of the one-way permeation layer 5;
[0030] The leak-proof partition 7 is located on the outside of the reinforcing layer 2, the anti-permeability layer 3, the absorbent core layer 4, the one-way permeability layer 5, and the absorbent surface layer 6.
[0031] It should be noted that the protective bottom layer 1 protects the core structure with its excellent strength, and the anti-permeability layer 3 blocks and protects the absorbent core layer 4 to prevent urine leakage. During use, urine enters the core through the absorbent surface layer 6 and the absorbent micropores 9. The wave structure of the absorbent surface layer 6 increases the absorption area and ensures absorption efficiency. At the same time, the hydrophobic coating 10 on the surface prevents absorption by the absorbent surface layer 6 and allows one-way permeation through the one-way permeability layer 5. Its one-way absorption characteristics prevent urine backflow. The absorbent core layer 4 achieves regional absorption through its multi-strip structure, and the spacer layer 8 set in the middle prevents regional permeation and accumulation, thereby ensuring the absorption effect.
[0032] In the specific implementation process, the absorbent core layer 4 is further composed of multiple strip structures.
[0033] In the specific implementation process, a spacer layer 8 is further embedded in the absorbent core layer 4.
[0034] In the specific implementation process, the upper wall surface of the absorption surface layer 6 is further characterized by a wavy shape.
[0035] In the specific implementation process, furthermore, the absorbent surface layer 6 is provided with absorbent micropores 9.
[0036] In the specific implementation process, a hydrophobic coating 10 is further sprayed onto the upper wall surface of the absorbent surface layer 6.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A core structure for an adult diaper, characterized in that, include: Protective bottom layer (1), reinforcing layer (2), anti-permeability layer (3), absorbent core layer (4), one-way permeability layer (5), absorbent surface layer (6), and leak-proof partition (7); The reinforcing layer (2) is disposed on the upper wall surface of the protective base layer (1); The impermeable layer (3) is disposed on the upper wall surface of the reinforcing layer (2); The absorbent core layer (4) is disposed on the upper wall surface of the anti-permeability layer (3); The one-way permeation layer (5) is disposed on the upper wall surface of the absorbent core layer (4); The absorbent surface layer (6) is disposed on the upper wall surface of the one-way permeation layer (5); The leak-proof partition (7) is located on the outside of the reinforcing layer (2), the anti-permeability layer (3), the absorbent core layer (4), the one-way permeability layer (5), and the absorbent surface layer (6).
2. The adult diaper core structure according to claim 1, characterized in that, The absorber core layer (4) is composed of multiple strip structures.
3. The adult diaper core structure according to claim 1, characterized in that, The absorbent core layer (4) has an embedded spacer layer (8).
4. The adult diaper core structure according to claim 1, characterized in that, The upper wall of the absorbent surface layer (6) is wavy.
5. The adult diaper core structure according to claim 1, characterized in that, The absorbent surface layer (6) has absorbent micropores (9).
6. The adult diaper core structure according to claim 1, characterized in that, A hydrophobic coating (10) is sprayed onto the upper wall surface of the absorbent surface layer (6).