An antibacterial slow-release patch
The antibacterial slow-release patch, with its multi-layer structure design, solves the problem of poor sweat absorption and antibacterial effect of existing antibacterial products in sports or high-temperature scenarios, achieving highly efficient sweat absorption and antibacterial and anti-inflammatory effects, and reducing the occurrence of skin problems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU UNIV OF TRADITIONAL CHINESE MEDICINE
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-26
AI Technical Summary
Existing antibacterial products are difficult to effectively absorb sweat and inhibit bacterial growth simultaneously in sports or high-temperature scenarios, leading to skin inflammation and eczema.
A multi-layered antibacterial sustained-release patch was designed, comprising a skin-friendly and breathable layer, a sustained-release drug layer, a sweat-absorbing substrate layer, and an adhesive backing layer. Through gradient sweat absorption design and sustained-release drug release, it synergistically inhibits bacterial growth and keeps the skin dry.
It achieves efficient sweat absorption and inhibits bacterial growth in sports or high-temperature scenarios, reducing skin inflammation and eczema, and providing comprehensive skin health protection.
Smart Images
Figure CN224404027U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of antibacterial patch technology, specifically relating to an antibacterial sustained-release patch. Background Technology
[0002] In daily life, especially during exercise or working in high temperatures, the human skin secretes a large amount of sweat. Sweat accumulating on the skin's surface not only causes a sticky and uncomfortable feeling but also creates a warm, humid environment, providing a breeding ground for bacteria. Propionibacterium acnes, in particular, easily multiplies in such an environment, leading to acne and other skin inflammations. Furthermore, skin that is constantly damp undergoes overhydration of the stratum corneum, weakening the skin barrier function and significantly increasing the likelihood of skin diseases such as eczema and prickly heat, seriously affecting skin health and quality of life.
[0003] Currently, there are many types of sweat-absorbing and antibacterial products on the market, but most of them suffer from limited functionality or poor effectiveness. Some sweat-absorbing products can only absorb sweat and lack effective antibacterial measures, failing to inhibit bacterial growth and fundamentally solve skin inflammation problems caused by sweat. On the other hand, some antibacterial products have weak sweat-absorbing capabilities, making it difficult to keep the skin dry and still unable to prevent various skin problems caused by moisture. Utility Model Content
[0004] The purpose of this application is to provide an antibacterial sustained-release patch to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] An antibacterial sustained-release patch, comprising:
[0007] The outer side has a skin-friendly and breathable layer and the inner side has a sustained-release drug layer. The inner side of the sustained-release drug layer has a sweat-absorbing substrate layer. The back of the sweat-absorbing substrate layer has an adhesive layer. The back of the adhesive layer has a release paper layer. Multiple gel sheets are adhered to the adhesive layer.
[0008] The sweat-absorbing substrate layer includes an outer sweat-absorbing layer, a middle sweat-absorbing layer, and an inner sweat-absorbing layer, with the middle sweat-absorbing layer disposed between the outer sweat-absorbing layer and the inner sweat-absorbing layer.
[0009] Preferably, the skin-friendly breathable layer has a thickness of 0.2 μm, is made of porous non-woven fabric, and has a number of micron-sized breathable pores evenly distributed on its surface, with a pore size range of 0.1-0.5 μm.
[0010] Preferably, the sustained-release drug layer has a thickness of 0.08 μm, the sustained-release drug layer is made of mesh fibers, and the mesh fibers of the sustained-release drug layer are embedded with honeysuckle extract through microcapsules.
[0011] Preferably, the outer sweat-absorbing layer has a thickness of 0.2 μm and is made of polyester fiber; the middle sweat-absorbing layer has a thickness of 0.71 μm and is made of superabsorbent polymer (SAP) particles; and the inner sweat-absorbing layer has a thickness of 0.2 μm and is made of sodium polyacrylate.
[0012] Preferably, the thickness of the backing layer is 0.06 μm, and the backing layer is made of medical-grade low-sensitivity pressure-sensitive adhesive.
[0013] Preferably, the release paper layer has a thickness of 0.03 μm and is made of silicone oil coated paper.
[0014] Preferably, the gel sheet has a thickness of 0.15 μm and is made of silicone.
[0015] Compared with the prior art, the beneficial effects of this application are:
[0016] (1) Through its multi-layered structure design, this antibacterial sustained-release patch not only has antibacterial and anti-inflammatory properties and effectively locks in moisture, but also reduces skin problems caused by sweat accumulation from multiple dimensions. On the one hand, inhibiting bacterial growth can prevent inflammation caused by bacterial infection; on the other hand, keeping the skin dry can prevent overhydration of the stratum corneum, reduce the probability of skin diseases such as eczema and prickly heat, and provide comprehensive protection for skin health, especially suitable for scenarios with more sweating such as sports and high temperatures.
[0017] (2) Through a multi-layer structure design, a gradient sweat-absorbing base layer is adopted during exercise. Through the cooperation of the outer, middle and inner sweat-absorbing layers, a complete and efficient sweat-absorbing system is constructed. From rapid moisture wicking and large amount of sweat storage to strong water retention, each layer performs its own function and works closely together to comprehensively improve the sweat absorption efficiency and effect of the antibacterial slow-release patch. Attached Figure Description
[0018] Figure 1 This is a perspective view of the entire device of this application;
[0019] Figure 2 This is a cross-sectional perspective view of the device of this application;
[0020] Figure 3 This is a three-dimensional cross-sectional view of the adhesive backing layer of this application;
[0021] Figure 4 This is a perspective view of the sweat-absorbing substrate layer of this application;
[0022] In the diagram: 1. Skin-friendly and breathable layer; 2. Sustained-release drug layer; 3. Sweat-absorbing substrate layer; 4. Adhesive backing layer; 5. Release paper layer; 6. Gel sheet; 31. Sweat-absorbing outer layer; 32. Sweat-absorbing middle layer; 33. Sweat-absorbing inner layer. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0025] Example:
[0026] Please see Figures 1-3 As shown, an antibacterial sustained-release patch includes:
[0027] The outer side has a skin-friendly and breathable layer 1 and the inner side has a sustained-release drug layer 2. The inner side of the sustained-release drug layer 2 has a sweat-absorbing substrate layer 3. The back of the sweat-absorbing substrate layer 3 has an adhesive layer 4. The back of the adhesive layer 4 has a release paper layer 5. Multiple gel sheets 6 are adhered to the adhesive layer 4.
[0028] As shown above, when using the patch, tear off the release paper layer 5 and stick it to the skin through the adhesive layer 4. At this time, the sustained-release drug layer 2 can slowly and continuously release antibacterial ingredients when it comes into contact with sweat, giving full play to its antibacterial and anti-inflammatory effects to inhibit the growth of Propionibacterium acnes, thereby achieving the purpose of preventing acne. At the same time, through the synergistic effect of the sweat-absorbing substrate layer 3 and the sustained-release drug layer 2, it can achieve efficient water retention, prevent sweat backflow, further ensure the dryness of the skin, and avoid skin problems caused by long-term accumulation of sweat.
[0029] The sweat-absorbing substrate layer 3 includes a sweat-absorbing outer layer 31, a sweat-absorbing middle layer 32, and a sweat-absorbing inner layer 33, with the sweat-absorbing middle layer 32 disposed between the sweat-absorbing outer layer 31 and the sweat-absorbing inner layer 33.
[0030] As can be seen from the above, the gradient sweat-absorbing substrate layer 3 is set up, the outer sweat-absorbing layer 31 uses a fast-wicking material, which can quickly absorb sweat from the skin surface and conduct it to the middle sweat-absorbing layer 32; the middle sweat-absorbing layer 32 is a high-capacity liquid-absorbing layer, which is used to store a large amount of sweat; the inner sweat-absorbing layer 33 can prevent sweat backflow and keep the skin dry; through this layered collaborative method, the sweat-absorbing efficiency and effect of the sweat patch are improved in all aspects.
[0031] Depend on Figures 2-3 It can be seen that the thickness of the skin-friendly breathable layer 1 is 0.2μm. The skin-friendly breathable layer 1 is made of porous non-woven fabric material, and the surface of the skin-friendly breathable layer 1 is uniformly distributed with several micron-sized breathable pores, with a pore size range of 0.1-0.5μm.
[0032] As shown above, using skin-friendly and breathable non-woven fabric as the contact layer material ensures free air circulation and excellent breathability, effectively preventing skin discomfort caused by prolonged exposure to a stuffy environment. Simultaneously, the porous non-woven fabric is soft and comfortable against the skin, preventing friction damage and quickly absorbing sweat while keeping the skin dry and reducing irritation.
[0033] The sustained-release drug layer 2 has a thickness of 0.08 μm and is made of mesh fibers. The mesh fibers of the sustained-release drug layer 2 are embedded with honeysuckle extract through microcapsules.
[0034] As shown above, honeysuckle extract is embedded in a mesh fiber using microencapsulation technology to form an intermediate layer. This allows the honeysuckle extract to slowly and continuously release antibacterial components when exposed to sweat, fully exerting its antibacterial and anti-inflammatory effects to inhibit the growth of Propionibacterium acnes, thereby achieving the goal of preventing acne.
[0035] Specifically, regarding the aforementioned sweat-absorbing substrate layer 3, refer to... Figure 4 As shown, the outer sweat-absorbing layer 31 has a thickness of 0.2 μm and is made of polyester fiber; the middle sweat-absorbing layer 32 has a thickness of 0.71 μm and is made of superabsorbent polymer (SAP) particles; and the inner sweat-absorbing layer 33 has a thickness of 0.2 μm and is made of sodium polyacrylate.
[0036] As can be seen from the above, the sweat-absorbing outer layer 31 made of polyester fiber can quickly transfer sweat from the skin surface to the sweat-absorbing inner layer 33, achieving a quick-drying effect; the sweat-absorbing middle layer 32 made of superabsorbent polymer (SAP) particles is used to store a large amount of sweat; the sweat-absorbing inner layer 33 made of sodium polyacrylate will dissociate the carboxyl groups when in contact with sweat, forming negatively charged carboxylate ions (-COO-). These ions can combine with water molecules through electrostatic interaction and hydrogen bonding, thereby adsorbing and locking in a large amount of moisture.
[0037] The thickness of the backing layer 4 is 0.06μm, and the backing layer 4 is made of medical-grade low-sensitivity pressure-sensitive adhesive;
[0038] As can be seen from the above, light gray medical-grade low-sensitivity pressure-sensitive adhesive is selected as the material of the backing layer 4 to ensure that the antibacterial sustained-release patch can be firmly adhered to the inner side of the skin, and can be repeatedly applied for user convenience, while reducing the risk of skin allergies.
[0039] The release paper layer 5 has a thickness of 0.03 μm and is made of silicone oil coated paper;
[0040] As can be seen from the above, the adhesion between the release paper layer 5 and the medical-grade pressure-sensitive adhesive of the backing layer 4 is much lower than the adhesion between the pressure-sensitive adhesive and the skin, which makes the release paper layer 5 easy to peel off during use, and at the same time, no glue residue will remain on the surface of the adhesive layer.
[0041] The gel sheet 6 has a thickness of 0.15 μm and is made of silicone.
[0042] As can be seen from the above, the gel sheet 6 adopts a microporous structure design, which allows air circulation, reduces stuffiness, and is suitable for sensitive skin. It can also help dissipate heat and absorb sweat, thereby improving the comfort during use.
[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An antibacterial sustained-release patch, characterized in that, include: A skin-friendly breathable layer (1) is disposed on the outside and a sustained-release drug layer (2) is disposed on the inside of the skin-friendly breathable layer (1). A sweat-absorbing substrate layer (3) is disposed on the inside of the sustained-release drug layer (2). An adhesive backing layer (4) is disposed on the back of the sweat-absorbing substrate layer (3). A release paper layer (5) is disposed on the back of the adhesive backing layer (4). Multiple gel sheets (6) are bonded to the adhesive backing layer (4). The sweat-absorbing substrate layer (3) includes a sweat-absorbing outer layer (31), a sweat-absorbing middle layer (32), and a sweat-absorbing inner layer (33), wherein the sweat-absorbing middle layer (32) is disposed between the sweat-absorbing outer layer (31) and the sweat-absorbing inner layer (33).
2. The antibacterial sustained-release patch according to claim 1, characterized in that: The skin-friendly breathable layer (1) has a thickness of 0.2 μm. The skin-friendly breathable layer (1) is made of porous non-woven fabric material, and the surface of the skin-friendly breathable layer (1) is uniformly distributed with several micron-sized breathable pores with a pore size range of 0.1-0.5 μm.
3. The antibacterial sustained-release patch according to claim 1, characterized in that: The sustained-release drug layer (2) has a thickness of 0.08 μm. The sustained-release drug layer (2) is made of mesh fibers, and honeysuckle extract is embedded in the mesh fibers of the sustained-release drug layer (2) through microcapsules.
4. The antibacterial sustained-release patch according to claim 1, characterized in that: The outer sweat-absorbing layer (31) has a thickness of 0.2 μm and is made of polyester fiber. The middle sweat-absorbing layer (32) has a thickness of 0.71 μm and is made of superabsorbent polymer (SAP) particles. The inner sweat-absorbing layer (33) has a thickness of 0.2 μm and is made of sodium polyacrylate.
5. The antibacterial sustained-release patch according to claim 1, characterized in that: The adhesive backing layer (4) has a thickness of 0.06 μm and is made of medical-grade low-sensitivity pressure-sensitive adhesive.
6. The antibacterial sustained-release patch according to claim 1, characterized in that: The release paper layer (5) has a thickness of 0.03 μm and is made of silicone oil coated paper.
7. The antibacterial sustained-release patch according to claim 1, characterized in that: The gel sheet (6) has a thickness of 0.15 μm and is made of silicone.