Urine isolation pad
By introducing a chitosan quaternary ammonium salt layer and an activated carbon layer into the diaper pad for antibacterial and deodorizing design, and by setting a diversion channel in the core layer, the problems of slow absorption and insufficient antibacterial and deodorizing properties of traditional diaper pads are solved, achieving rapid absorption and antibacterial and deodorizing effects, and improving the comfort and hygiene safety of infants and young children.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional diaper pads have a slow absorption rate, which can easily lead to urine buildup, and they lack antibacterial and odor-proof functions, affecting the health and hygiene of infants and young children.
The product adopts a composite structure from top to bottom, consisting of a surface layer, an antibacterial and deodorizing layer, a core layer, and a bottom layer. The antibacterial and deodorizing layer includes a chitosan quaternary ammonium salt layer and an activated carbon layer. The core layer is equipped with a flow channel, and the surface layer is a bamboo fiber non-woven fabric layer to improve the absorption speed and antibacterial performance.
It achieves rapid absorption of urine, inhibits bacterial growth and odor, maintains a fresh scent, and improves user comfort and hygiene safety.
Smart Images
Figure CN224023760U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a urine isolation pad and belongs to the technical field of infant hygiene products. BACKGROUND
[0002] Disposable urine isolation pads (hereinafter referred to as "urine isolation pads") are designed for infants and are mainly used to isolate urine and other contaminants. Since infants and young children have not yet fully developed the ability to control their excretion, laying a urine isolation pad on the place where they lie can effectively prevent them from soiling their bedding when they urinate or defecate. Whether it is accidental leakage when opening a diaper or paper diaper or daily excretion, urine isolation pads can prevent excrement from spreading everywhere and help maintain a clean and sanitary environment.
[0003] Traditional urine isolation pads are usually composed of a surface layer of non-woven fabric, a core layer and a bottom layer, and have a certain urine absorption capacity. However, due to their slow absorption speed, urine tends to accumulate in certain areas, making the environment in contact with infants and young children damp and wet, causing them to feel strong discomfort. Moreover, conventional urine isolation pads lack antibacterial and deodorizing functions, making it difficult to inhibit the growth of bacteria and unable to timely dissipate the odor emitted by excrement, which undoubtedly poses many hidden dangers to the health of infants and young children. SUMMARY
[0004] The utility model aims at the above technical problems and provides a urine isolation pad with good antibacterial and deodorizing effects.
[0005] To achieve the above purpose, the utility model employs the following technical scheme:
[0006] A urine isolation pad comprises a surface layer, an antibacterial and deodorizing layer, a core layer and a bottom layer, which are sequentially compounded from top to bottom. The antibacterial and deodorizing layer comprises a first absorption layer, an antibacterial material layer and a second absorption layer. The surface layer is a bamboo fiber non-woven fabric layer. The core layer has a plurality of interlaced flow guide grooves on the side facing the antibacterial and deodorizing layer. The flow guide grooves extend longitudinally or transversely along the surface of the core layer. The antibacterial material layer comprises a chitosan quaternary ammonium salt layer and an activated carbon layer arranged in the chitosan quaternary ammonium salt layer.
[0007] Therefore, the first and second absorbent layers of the antibacterial and deodorizing layer can quickly absorb urine, preventing it from accumulating on the surface. Simultaneously, they provide excellent support and protection for the antibacterial material layer, improving the antibacterial and deodorizing performance of the incontinence pad. Channeling grooves are created on the surface of the core layer, extending longitudinally or laterally to guide urine to disperse and seep downwards quickly, preventing urine from concentrating in one place, increasing urine absorption speed, preventing backflow, and keeping the surface dry. Chitosan quaternary ammonium salt has broad-spectrum antibacterial properties, effectively inhibiting bacterial growth and preventing urine from producing odors. Due to the cationic nature of the quaternary ammonium group, the chitosan quaternary ammonium salt layer exhibits excellent antibacterial activity and biocompatibility. The powerful adsorption capacity of the activated carbon layer further adsorbs odor molecules, achieving highly efficient antibacterial and deodorizing effects through a two-pronged approach, maintaining a fresh scent during the use of the incontinence pad.
[0008] Based on the embodiments of this utility model, further optimizations can be made to this utility model. The optimized technical solutions are as follows:
[0009] In one specific embodiment, the core layer has a plurality of protrusions arranged longitudinally and laterally along the surface of the core layer on the side facing the antibacterial and deodorizing layer; there is a gap between two adjacent protrusions, and a guide groove extending longitudinally along the surface of the core layer is formed between a plurality of longitudinal protrusions, and a guide groove extending laterally along the surface of the core layer is formed between a plurality of transverse protrusions.
[0010] In one specific embodiment, the chitosan quaternary ammonium salt layer is chitosan quaternary ammonium salt powder or chitosan quaternary ammonium salt film, and the first absorbent layer and the second absorbent layer are both absorbent paper layers.
[0011] In one specific embodiment, when a chitosan quaternary ammonium salt membrane is used as the chitosan quaternary ammonium salt layer, the arrangement order of each structural layer in the antibacterial and deodorizing layer is: chitosan quaternary ammonium salt layer - first absorbent layer - activated carbon layer - second absorbent layer, or first absorbent layer - activated carbon layer - second absorbent layer - chitosan quaternary ammonium salt layer.
[0012] In one specific embodiment, when chitosan quaternary ammonium salt powder is used as the chitosan quaternary ammonium salt layer, the arrangement order of each structural layer in the antibacterial and deodorizing layer is: first absorption layer - activated carbon layer - chitosan quaternary ammonium salt layer - second absorption layer, or first absorption layer - chitosan quaternary ammonium salt layer - activated carbon layer - second absorption layer.
[0013] In one specific embodiment, the core layer includes a wood pulp layer, wherein SAP particles are disposed in the wood pulp layer.
[0014] In one specific embodiment, the bamboo fiber nonwoven fabric layer of the surface layer contains chitosan quaternary ammonium salt particles.
[0015] In one specific embodiment, the lower surface of the bottom layer is provided with a plurality of anti-slip strips arranged along the length of the diaper pad.
[0016] In one specific embodiment, the thickness of the antibacterial and deodorizing layer is 0.1-0.2 mm, and the thickness of the core layer is 0.8-0.9 mm.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1) This utility model improves the antibacterial and deodorizing capabilities of the diaper pad by modifying the antibacterial and deodorizing layer. Chitosan quaternary ammonium salt has broad-spectrum antibacterial properties, effectively inhibiting bacterial growth and preventing urine from producing odors. Due to the cationic nature of the quaternary ammonium group, the chitosan quaternary ammonium salt layer has excellent antibacterial activity and biocompatibility; the strong adsorption capacity of the activated carbon layer can further adsorb odor molecules, achieving efficient antibacterial and deodorizing effects through a two-pronged approach, maintaining a fresh scent during the use of the diaper pad.
[0019] 2) The diaper pad of this utility model improves the core layer by setting protrusions and drainage channels, which not only increases the surface area of the core layer, which is conducive to the rapid absorption and drainage of urine, but also the gap between the protrusions can play a buffering role, which to a certain extent prevents the core layer structure from being deformed by urine impact, thus ensuring the long-term performance of the diaper pad.
[0020] 3) The surface layer of the diaper pad of this utility model is not only soft and comfortable to the touch and breathable and moisture-wicking, but also has good antibacterial properties, which can ensure that infants and young children stay dry for a long time during use and improve the comfort of use. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the cross-sectional structure of the diaper pad of this utility model;
[0022] Figure 2 This is an exploded view of the structure of the diaper pad of this utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the core layer of the diaper pad of this utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the bottom layer of the diaper pad of this utility model.
[0025] In the figure
[0026] 1-Top layer; 2-Antibacterial and deodorizing layer; 21-First absorption layer; 22-Antibacterial and deodorizing layer; 23-Second absorption layer; 3-Core layer; 31-Guiding groove; 32-Protrusion; 4-Bottom layer; 5-Anti-slip strip. Detailed Implementation
[0027] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.
[0028] like Figures 1-4 As shown, the diaper pad of this embodiment includes, from top to bottom, a top layer 1, an antibacterial and deodorizing layer 2, a core layer 3, and a bottom layer 4, all bonded together with structural adhesive. The core layer 3 has several staggered drainage channels 31 on the side facing the antibacterial and deodorizing layer 2. The core layer 3 includes a wood pulp layer containing SAP particles.
[0029] In this embodiment, the flow channel 31 extends longitudinally or laterally along the surface of the core layer 3. The side of the core layer 3 facing the antibacterial and deodorizing layer 2 is provided with a plurality of protrusions 32 arranged longitudinally and laterally along the surface of the core layer 3. There is a gap between two adjacent protrusions 32. A flow channel 31 extending longitudinally along the surface of the core layer 3 is formed between a plurality of longitudinal protrusions 32, and a flow channel 31 extending laterally along the surface of the core layer 3 is formed between a plurality of transverse protrusions 32.
[0030] The core layer 3 is molded into several circular protrusions 32, and several intersecting drainage channels 31 are formed between adjacent protrusions 32. These drainage channels 31 have a drainage function. When the infant urinates, the urine will flow along these drainage channels 31 in the length and width directions. The intersecting drainage channel structure 31 helps the diaper pad to quickly absorb urine and avoids the discomfort of local urine accumulation that causes the skin to feel damp and stuffy.
[0031] To improve the antibacterial and deodorizing performance of the diaper pad, the antibacterial and deodorizing layer 2 includes, from top to bottom, a first absorbent layer 21, an antibacterial material layer 22, and a second absorbent layer 23. The first absorbent layer 21 and the second absorbent layer 23 are both absorbent paper layers. The antibacterial material layer 22 includes a chitosan quaternary ammonium salt layer and an activated carbon layer.
[0032] The surface layer 1 is a bamboo fiber nonwoven fabric layer. Bamboo fiber has excellent moisture absorption and breathability, a soft and skin-friendly feel, and natural antibacterial properties. The antibacterial mechanism of bamboo fiber mainly comes from the bamboo phenolic component it contains, a natural substance that can effectively inhibit the growth of bacteria and fungi. Moreover, the rough structure of the bamboo fiber surface also provides physical support for the antibacterial effect. Preferably, the bamboo fiber nonwoven fabric layer of the surface layer 1 contains chitosan quaternary ammonium salt particles. The surface layer 1 is formed by impregnating the nonwoven fabric with chitosan quaternary ammonium salt particles to create a nonwoven fabric surface material with better antibacterial properties.
[0033] The antibacterial material layer 22 in the antibacterial and deodorizing layer 2 is selected from chitosan quaternary ammonium salt powder or chitosan quaternary ammonium salt membrane. It is an advanced chitosan derivative made from chitosan extracted from natural chitin through chemical modification, possessing excellent antibacterial properties and biocompatibility. It protects infants and young children from germs while avoiding adverse effects on the body, being gentler on human skin and less likely to cause allergic reactions. The antibacterial mechanism of chitosan quaternary ammonium salt is mainly related to its molecular structure and the mode of action of the quaternary ammonium salt groups. Due to the cationic nature of the quaternary ammonium groups, it can interact more effectively with bacterial membranes. Compared to other chitosan hydrochloride solutions, chitosan citric acid solutions, and chitosan buffer solutions, chitosan quaternary ammonium salt exhibits superior antibacterial activity, such as disrupting bacterial cell membrane structure, inhibiting bacterial enzyme activity, and interfering with bacterial ion balance. The biocompatibility of chitosan quaternary ammonium salts is mainly attributed to their naturally derived chitosan components, mild quaternary ammonium salt groups, good degradation properties, and low toxicity. They are highly compatible with human cells, skin, and other tissues, and are unlikely to cause allergies, irritation, or immune rejection. Furthermore, the antibacterial and deodorizing layer also includes an activated carbon layer, which effectively absorbs the pungent odor produced by urine, creating a clean and hygienic air environment for infants and young children.
[0034] In one specific embodiment, the antibacterial material layer 22 is covered with absorbent paper layers on both the top and bottom, with a chitosan quaternary ammonium salt membrane in the middle and an activated carbon layer added. When the chitosan quaternary ammonium salt membrane is used as the chitosan quaternary ammonium salt layer, the arrangement order of the various material layers of the antibacterial material layer 22 can be chitosan quaternary ammonium salt membrane - first absorbent layer 21 - activated carbon layer - second absorbent layer 23, or first absorbent layer 21 - activated carbon - second absorbent layer 23 - chitosan quaternary ammonium salt membrane. The first absorbent layer 21 and the second absorbent layer 23 are used to fix the chitosan quaternary ammonium salt membrane and the activated carbon layer, and also play a certain role in liquid absorption. Each structural layer is bonded with structural adhesive.
[0035] In one specific embodiment, when chitosan quaternary ammonium salt powder is used as the chitosan quaternary ammonium salt layer, the arrangement order of each structural layer in the antibacterial and deodorizing layer can be either the first absorbent layer - activated carbon layer - chitosan quaternary ammonium salt layer - second absorbent layer, or the first absorbent layer - chitosan quaternary ammonium salt layer - activated carbon layer - second absorbent layer.
[0036] To prevent the diaper pad from slipping in actual use scenarios, such as when placed on a mattress, the bottom layer 4 is a water-repellent PE film, and several anti-slip strips 5 are provided on the lower surface of the bottom layer 4 along the length of the diaper pad. The anti-slip strips 5 are silicone anti-slip strips, which help to fix the diaper pad in place and prevent the diaper pad from slipping when the infant is moving, thus preventing urine from leaking out of the diaper pad and causing contamination, and avoiding extra cleaning work.
[0037] The thickness of the diaper pad in this embodiment is 1.0mm-1.2mm, wherein the thickness of the antibacterial and deodorizing layer 2 is 0.1-0.2mm, and the thickness of the core layer 3 is 0.8-0.9mm.
[0038] The diaper pad in this embodiment features a multi-layered composite structure design, integrating multiple functions such as drainage, antibacterial deodorization, absorption, and anti-slip properties to meet various usage needs. Its excellent drainage effect allows liquid to disperse quickly, preventing localized dampness. The antibacterial and deodorizing function reduces odors and bacterial growth, maintaining a relatively clean and hygienic environment. The anti-slip strips prevent the diaper pad from shifting, ensuring stability during use.
[0039] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.
Claims
1. A diaper pad, characterized in that: It includes a top layer (1), an antibacterial and deodorizing layer (2), a core layer (3), and a bottom layer (4) that are sequentially composited from top to bottom; the antibacterial and deodorizing layer (2) includes a first absorption layer (21), an antibacterial material layer (22), and a second absorption layer (23); the top layer (1) is a bamboo fiber nonwoven fabric layer; the core layer (3) has several interlaced guide grooves (31) on the side facing the antibacterial and deodorizing layer (2); the guide grooves (31) extend longitudinally or laterally along the surface of the core layer (3); the antibacterial material layer (22) includes a chitosan quaternary ammonium salt layer and an activated carbon layer disposed in the chitosan quaternary ammonium salt layer.
2. The diaper pad according to claim 1, characterized in that: The core layer (3) has a plurality of protrusions (32) arranged longitudinally and laterally along the surface of the core layer (3) on the side facing the antibacterial and deodorizing layer (2); there is a gap between two adjacent protrusions (32), and a guide groove (31) extending longitudinally along the surface of the core layer (3) is formed between a plurality of longitudinal protrusions (32), and a guide groove (31) extending laterally along the surface of the core layer (3) is formed between a plurality of transverse protrusions (32).
3. The diaper pad according to claim 1, characterized in that: The chitosan quaternary ammonium salt layer is chitosan quaternary ammonium salt powder or chitosan quaternary ammonium salt film, and the first absorbent layer (21) and the second absorbent layer (23) are both absorbent paper layers.
4. The diaper pad according to claim 3, characterized in that: When chitosan quaternary ammonium salt membrane is used as chitosan quaternary ammonium salt layer, the arrangement order of each structural layer in the antibacterial and deodorizing layer (2) is: chitosan quaternary ammonium salt layer - first absorption layer (21) - activated carbon layer - second absorption layer (23), or first absorption layer (21) - activated carbon layer - second absorption layer (23) - chitosan quaternary ammonium salt layer.
5. The diaper pad according to claim 3, characterized in that: When chitosan quaternary ammonium salt powder is used as the chitosan quaternary ammonium salt layer, the arrangement order of each structural layer in the antibacterial and deodorizing layer (2) is: first absorption layer (21) - activated carbon layer - chitosan quaternary ammonium salt layer - second absorption layer (23), or first absorption layer (21) - chitosan quaternary ammonium salt layer - activated carbon layer - second absorption layer (23).
6. The diaper pad according to claim 1, characterized in that: The core layer (3) includes a wood pulp layer, in which SAP particles are provided.
7. The diaper pad according to claim 1, characterized in that: The bamboo fiber nonwoven fabric layer of the surface layer (1) contains chitosan quaternary ammonium salt particles.
8. The diaper pad according to any one of claims 1-7, characterized in that: The lower surface of the bottom layer (4) is provided with several anti-slip strips (5) arranged along the length of the diaper pad.
9. The diaper pad according to any one of claims 1-7, characterized in that: The thickness of the antibacterial and deodorizing layer (2) is 0.1-0.2 mm, and the thickness of the core layer (3) is 0.8-0.9 mm.