Pet urine pad with quick flow guiding and anti-back seepage functions
Patent Information
- Application Number
- CN202522563762.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-03
AI Technical Summary
现有宠物尿垫一般采用多层结构且多采用无纺布作为表层材料，具有一定的亲水性、柔软度和透气性，但使用过程中仍存在一些问题：液体下渗速度慢：当大量尿液在无纺布表面时，由于无纺布纤维的作用有限，液体容易在表面横向扩散而非快速下渗，导致宠物爪部易沾染污液，体验感差；返渗严重：在宠物踩踏或卧躺的压力下，已被吸收芯层锁住的液体容易被挤压回表层，造成表面潮湿，不仅影响宠物舒适度，也容易滋生细菌
本实用新型中提供了一种具有快速导流与防返渗功能的宠物尿垫，通过对表层结构进行优化改进，实现了液体的快速导流，提升了液体的渗透速度，同时可以实现防返渗的效果，改善使用舒适度和便捷性；具体的，采用打孔膜作为表层结构，即在打孔膜表层上设置有多个均匀分布的导流孔，且导流孔的孔径呈梯度减小，独特的倒锥形微孔结构为液体提供了直达吸收芯层的快速通道，液体接触表面后能迅速下渗，极大减少了在表面的滞留时间和横向扩散，保持了表层的干爽；改善宠物尿垫上主要受液区域的导流效率，配合吸收芯层的高吸水性树脂颗粒形成立体缩水系统。同时上大下小的导流孔孔道结构可以形成单向阀效应，受到压力时，吸收芯层内的液体难以通过狭窄的下孔口返渗至表面，显著提升了使用舒适度。此外，较大的上孔口不易被宠物爪带进的杂物或液体中的结晶物完全堵塞，保证了导流功能的持久性。
Smart Images
Figure CN224891466U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pet hygiene products technology, specifically to a pet pee pad with rapid drainage and anti-backflow functions. Background Technology
[0002] Pet pee pads are a widely used disposable hygiene product in modern pet ownership, primarily used for training pets to potty train, handling daily excretions, or providing convenience for pets with limited mobility. Current pet pee pads generally employ a multi-layered structure, often using non-woven fabric as the surface material. While these materials offer some hydrophilicity, softness, and breathability, several problems remain: slow liquid absorption: when a large amount of urine is on the non-woven fabric surface, the limited effectiveness of the non-woven fibers causes the liquid to spread laterally rather than quickly seep down, resulting in easily soiled paws and a poor user experience; severe backflow: under the pressure of a pet stepping on or lying down, liquid trapped in the absorbent core is easily squeezed back to the surface, causing dampness that not only affects the pet's comfort but also promotes bacterial growth. Therefore, based on these issues, existing technology requires further improvement. Utility Model Content
[0003] The purpose of this invention is to provide a pet urine pad with rapid drainage and anti-backflow functions to solve the existing technical problems in the background art.
[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a pet urine pad with rapid drainage and anti-backflow functions is provided, including a perforated membrane surface layer, an absorbent core layer, and a waterproof bottom layer; the perforated membrane surface layer is provided with multiple drainage holes that are evenly distributed, and the diameter of the drainage holes decreases gradually from top to bottom; the absorbent core layer is located at the bottom end of the perforated membrane surface layer, and the absorbent core layer is filled with water-absorbing particles; the waterproof bottom layer is located at the bottom end of the absorbent core layer.
[0005] Based on the above technical solution, the distribution area of the flow guide holes accounts for 15%-40% of the surface area of the perforated membrane.
[0006] Based on the above technical solution, the longitudinal section of the guide hole is set to an inverted cone shape or an inverted trapezoid shape.
[0007] Based on the above technical solution, the top opening diameter of the guide hole is 0.5-1.0mm, the bottom opening diameter is 0-0.5mm, and the height is 0.3-0.6mm.
[0008] Based on the above technical solution, the surface of the perforated membrane is made of polyethylene and has a hydrophilic coating.
[0009] Based on the above technical solution, the absorbent core layer includes a paper liner layer, a first absorbent layer, and a second absorbent layer. The paper liner layer is disposed at the top of the first absorbent layer and the bottom of the second absorbent layer, and the second absorbent layer is disposed at the bottom of the first absorbent layer.
[0010] Based on the above technical solution, the material of the first absorbent layer is superabsorbent polymer (SAP), and the material of the second absorbent layer is fluff pulp.
[0011] Based on the above technical solution, the waterproof base layer is made of polyethylene cast film.
[0012] The beneficial effects of the technical solution provided by this utility model are as follows: This invention provides a pet pee pad with rapid flow diversion and anti-backflow functions. By optimizing and improving the surface structure, it achieves rapid liquid diversion, increases the liquid penetration rate, and simultaneously prevents backflow, improving user comfort and convenience. Specifically, a perforated membrane is used as the surface structure, with multiple evenly distributed diversion holes on the surface. The pore size of the diversion holes decreases gradually, and the unique inverted conical microporous structure provides a rapid channel for the liquid to reach the absorbent core layer. After contacting the surface, the liquid can quickly seep down, greatly reducing the residence time and lateral diffusion on the surface, keeping the surface dry. It improves the flow diversion efficiency of the main liquid-receiving area of the pet pee pad, and forms a three-dimensional shrinkage system with the highly absorbent resin particles of the absorbent core layer. At the same time, the diversion hole structure, which is larger at the top and smaller at the bottom, can create a one-way valve effect. Under pressure, the liquid in the absorbent core layer is difficult to seep back to the surface through the narrow lower orifice, significantly improving user comfort. In addition, the larger upper opening is less likely to be completely blocked by debris brought in by pet claws or crystals in the liquid, ensuring the durability of the drainage function. Attached Figure Description
[0013] Figure 1 This is a cross-sectional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the absorbent core layer in this utility model. Figure 3 This is a schematic diagram of the flow guide hole in this utility model; Detailed Implementation The present invention will be further described below with reference to the accompanying drawings and embodiments: In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0014] In the description of this utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0015] like Figures 1 to 3 As shown, a pet urine pad with rapid drainage and anti-backflow functions includes a perforated membrane surface layer 1, an absorbent core layer 2, and a waterproof bottom layer 3. The perforated membrane surface layer 1 is provided with a plurality of drainage holes 11 evenly distributed, and the diameter of the drainage holes 11 decreases from top to bottom. The absorbent core layer 2 is located at the bottom end of the perforated membrane surface layer 1 and is filled with absorbent particles. The waterproof bottom layer 3 is located at the bottom end of the absorbent core layer 2.
[0016] This invention provides a pet pee pad with rapid flow diversion and anti-backflow functions. By optimizing and improving the surface structure, it achieves rapid liquid flow diversion, increases the liquid penetration rate, and simultaneously prevents backflow, improving user comfort and convenience. Specifically, a perforated membrane is used as the surface structure, with multiple evenly distributed diversion holes 11 on the perforated membrane surface 1. The pore size of the diversion holes 11 decreases in a gradient, and the unique inverted conical microporous structure provides a rapid channel for the liquid to reach the absorbent core layer. After the liquid contacts the surface, it can quickly seep down, greatly reducing the residence time and lateral diffusion on the surface, keeping the surface dry. This improves the flow diversion efficiency of the main liquid-receiving area of the pet pee pad, and forms a three-dimensional shrinkage system with the highly absorbent resin particles of the absorbent core layer 2. At the same time, the diversion hole structure with a larger upper part and a smaller lower part can form a one-way valve effect. Under pressure, the liquid in the absorbent core layer is difficult to seep back to the surface through the narrow lower orifice, significantly improving user comfort. In addition, the larger upper opening is less likely to be completely blocked by debris brought in by pet claws or crystals in the liquid, ensuring the durability of the drainage function.
[0017] Based on the above technical solution, the distribution area of the flow guide holes 11 accounts for 15%-40% of the area of the perforated membrane surface layer 1.
[0018] Preferably, in this application, the distribution area of the flow guide holes 11 is 15%-40% of the area of the perforated membrane surface layer 1. This ratio can ensure sufficient flow guide channels and maintain the overall strength of the membrane structure.
[0019] Based on the above technical solution, the longitudinal section of the guide hole 11 is set to an inverted cone shape or an inverted trapezoid shape.
[0020] Preferably, the orifice 11 in this application has a longitudinal cross-section that is either an inverted cone or a trumpet shape. This structure facilitates the smooth flow of liquid into the orifice under gravity, while the top-larger, bottom-smaller structure effectively prevents liquid in the absorbent core from easily returning to the surface under pressure, thereby significantly reducing backflow.
[0021] Based on the above technical solution, the top opening diameter of the guide hole is 0.5-1.0mm, the bottom opening diameter is 0-0.5mm, and the height is 0.3-0.6mm.
[0022] Preferably, the diameter of the flow guide hole 11 in this application varies in a gradient direction in the thickness direction, specifically: the diameter of the hole facing the surface of the perforated membrane, i.e., the upper hole, is larger than the diameter of the hole facing the absorber core layer, i.e., the lower hole.
[0023] Based on the above technical solution, the perforated membrane surface layer 1 is made of polyethylene and has a hydrophilic coating on its surface.
[0024] The perforated membrane surface layer 1 is made of polyethylene film through a perforation process; the hydrophilic coating is obtained through corona treatment. The plastic film and perforation process used are mature technologies with low production costs and are easy for large-scale industrial production. It should also be noted that the perforation and corona treatment processes can be obtained from existing technologies, and this application does not involve any improvement to the specific steps of these processes.
[0025] Preferably, the perforated membrane surface layer of the pet pee pad in this application is made of polyethylene material, which has high strength and durability. Since the plastic film itself has high tensile and tear resistance, even after perforation, its overall structure remains stable and is not easily scratched by pets, resulting in a long service life. This solves the problem of non-woven fabric as the surface structure in the prior art being easily scratched, frayed, or even damaged by pets' claws.
[0026] Based on the above technical solution, the absorbent core layer 2 includes a paper liner layer 21, a first absorbent layer 22 and a second absorbent layer 23. The paper liner layer 21 is respectively disposed at the top end of the first absorbent layer 22 and the bottom end of the second absorbent layer 23, and the second absorbent layer 23 is disposed at the bottom end of the first absorbent layer 22.
[0027] Based on the above technical solution, the material of the first absorbent layer 22 is superabsorbent polymer (SAP), and the material of the second absorbent layer 23 is fluff pulp.
[0028] Based on the above technical solution, the waterproof base layer 3 is made of polyethylene cast film.
[0029] The foregoing has shown and described the basic principles and main features of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments. Therefore, the embodiments should be regarded as exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims within this utility model.
[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A pet pee pad with rapid drainage and anti-backflow functions, characterized in that, It includes a perforated membrane surface layer, an absorbent core layer, and a waterproof bottom layer; the perforated membrane surface layer is provided with multiple flow guide holes that are evenly distributed, and the diameter of the flow guide holes decreases gradually from top to bottom; the absorbent core layer is located at the bottom end of the perforated membrane surface layer and is filled with water-absorbing particles; the waterproof bottom layer is located at the bottom end of the absorbent core layer.
2. A pet pee pad with rapid drainage and anti-backflow function as described in claim 1, characterized in that, The distribution area of the flow guide holes accounts for 15%-40% of the surface area of the perforated membrane.
3. A pet pee pad with rapid drainage and anti-backflow function according to claim 1, characterized in that, The longitudinal section of the guide hole is set to an inverted cone or an inverted trapezoid.
4. A pet pee pad with rapid drainage and anti-backflow function as described in claim 1, characterized in that, The top opening diameter of the guide hole is 0.5-1.0 mm, the bottom opening diameter is 0-0.5 mm, and the height is 0.3-0.6 mm.
5. A pet pee pad with rapid drainage and anti-backflow function according to claim 1, characterized in that, The surface of the perforated membrane is made of polyethylene and has a hydrophilic coating.
6. A pet pee pad with rapid drainage and anti-backflow function according to claim 1, characterized in that, The absorbent core layer includes a paper liner layer, a first absorbent layer, and a second absorbent layer. The paper liner layer is disposed at the top of the first absorbent layer and the bottom of the second absorbent layer, and the second absorbent layer is disposed at the bottom of the first absorbent layer.
7. A pet pee pad with rapid drainage and anti-backflow function according to claim 6, characterized in that, The first absorbent layer is made of superabsorbent polymer (SAP), and the second absorbent layer is made of fluff pulp.
8. A pet pee pad with rapid drainage and anti-backflow function according to claim 1, characterized in that, The waterproof base layer is made of polyethylene cast film.