Flexible deodorization insole with mechanoluminescence-induced photodynamic antibiosis function
By using multi-layered functional layer design and electroluminescence technology in the insole, the photodynamic antibacterial layer is activated, and the existing antibacterial insoles has poor antibacterial durability, high cost and insufficient comfort are solved, achieving efficient antibacterial deodorization and cost reduction effects.
Patent Information
- Application Number
- CN202421177622.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing antibacterial insoles have poor antibacterial durability, high production cost and insufficient wear comfort, and poor breathability and hygroscopicity lead to accumulation of sweat and promote bacterial growth.
The multi-layered functional layer design is adopted, including a breathable and hygroscopic layer, a photodynamic antibacterial layer, a waterproof and moisture-permeable film layer, a glue coating layer and a support layer. The photodynamic antibacterial layer is activated under the action of plantar stress by the luminescent material to achieve efficient antibacterial deodorization.
It achieves efficient antibacterial deodorization effect, reduces costs, improves wear comfort, and maximizes light utilization through multi-layer structure design, enhancing antibacterial effect.
Smart Images
Figure CN222639856U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a flexible deodorizing insole capable of inducing photodynamic antibacterial effects by means of mechanoluminescence, and belongs to the technical field of functional textile materials. Background Art
[0002] In recent years, the application of luminescent materials in flexible wearable devices has received widespread attention, which are mainly divided into three forms: electroluminescence, photoluminescence and mechanoluminescence. Mechanoluminescent materials (ML materials) can produce luminescence under mechanical action, without the need for external power or light, and are environmentally friendly. The material converts mechanical energy into light energy through piezoelectric effect or strain-induced luminescence effect. When the material is subjected to force, the internal lattice structure changes, causing electron transitions and releasing photons. Mechanoluminescent materials show potential application value in many fields such as stress detection and health testing.
[0003] Photodynamic antimicrobial chemotherapy (PATC) is a new antibacterial method that uses photosensitizers to produce reactive oxygen species under light excitation, effectively killing microorganisms without causing drug resistance. Hypocrellin (Hc) and chitosan (CH) are two substances with complementary antibacterial properties, and their combined use can improve antibacterial efficiency.
[0004] The problems currently faced by antibacterial insoles include poor antibacterial durability, high production costs, and poor wearing comfort. The antibacterial materials used, such as quaternary amine antibacterial fibers and silver fibers, have decomposition and oxidation problems, resulting in reduced antibacterial effects over time. In addition, the design of the antibacterial layer does not fully consider the distribution of sweat secretion on the soles of the human body, resulting in problems with utilization and cost efficiency. In addition, the insole has poor air permeability and moisture absorption, which can easily lead to sweat accumulation on the surface of the upper, resulting in reduced wearing comfort and easy bacterial growth. Utility Model Content
[0005] In order to solve the above problems, the utility model provides a flexible deodorizing insole with mechanoluminescence-induced photodynamic antibacterial properties. The utility model utilizes the plantar stress generated when the human body walks, and realizes efficient photodynamic antibacterial therapy (PDAT) through built-in mechanoluminescent materials, without the need for external power supply or light stimulation, to achieve antibacterial and deodorizing effects, while taking into account cost-effectiveness, antibacterial efficiency and wearing comfort.
[0006] The technical solution adopted by the utility model is as follows:
[0007] The utility model aims to provide a flexible deodorizing insole with photodynamic antibacterial induced by mechanoluminescence, comprising multiple stacked functional layers, which are respectively a breathable and moisture-absorbing layer, a photodynamic antibacterial layer, a waterproof and breathable film layer, a coating layer and a supporting layer, wherein the adjacent functional layers are sewn together by sewing thread or bonded by hot-melt adhesive;
[0008] The breathable and moisture-absorbing layer is made of a blended fabric of cotton and linen fibers with a special-shaped cross-section;
[0009] The photodynamic antibacterial layer is formed by sequentially stacking a nanofiber membrane and a mechanoluminescent fabric.
[0010] In one embodiment, the breathable and moisture-absorbent layer is the first layer and the support layer is the last layer.
[0011] In one embodiment, the adjacent functional layers are sewn together by using special sewing threads, such as nylon threads or polyester threads. The sewing can be done by using different sewing techniques, preferably by using lock-stitching, to adapt to the materials and thicknesses of the different layers.
[0012] In one embodiment, adjacent functional layers can also be hot-melt bonded, by heating the hot-melt adhesive to a molten state, then applying it to the contact surface, and using pressure to make the adhesive penetrate and bond the two adjacent layers of material. The hot-melt adhesive solidifies after cooling to form a strong bond.
[0013] In one embodiment, the breathable and moisture-absorbing layer is made of a blended fabric of cotton and linen fibers with a special-shaped cross-section, wherein the content of the cotton fibers is 55-75%.
[0014] In one embodiment, the breathable and moisture-absorbent layer has a thickness of 1±0.1 mm.
[0015] In one embodiment, the special-shaped cross section is a triangle, a quadrilateral, a pentagon, a hexagon or a cross-shaped cross section.
[0016] The use of a breathable and moisture-absorbing layer with a special-shaped cross-section can enhance the refraction and reflection of light, thereby increasing the retention rate of light inside the insole and ensuring that more light energy is effectively absorbed by the photodynamic antibacterial layer to achieve a better antibacterial effect.
[0017] The structure of the special-section fiber is designed to be a non-circular cross-section with a variety of geometric shapes, including but not limited to triangular, quadrilateral, pentagonal or hexagonal cross-sections. The design of these special-section fibers aims to provide a larger refractive index change and reflection area through their unique geometric characteristics, effectively scattering and capturing the light penetrating the insole, thereby optimizing the photodynamic antibacterial performance of the insole.
[0018] In one embodiment, the nanofiber membrane is located on the lower side of the breathable and moisture-absorbing layer, and the electroluminescent fabric is located on the upper side of the waterproof and moisture-permeable membrane layer; the thickness of the photodynamic antibacterial layer is 1.5±0.1 mm.
[0019] In one embodiment, the thickness of the nanofiber membrane is 100-200 μm, and the thickness of the mechanoluminescent fabric is 1.3-1.4 mm.
[0020] In one embodiment, the nanofiber membrane is a bacterial cellulose membrane of interfacial cross-linked bamboo red fungus (Hc) and chitosan (BC), Hc-BC / CH; the mechanoluminescent fabric is a fabric woven from TPU (thermoplastic polyurethane elastomer) yarn; the surface of the TPU (thermoplastic polyurethane elastomer) yarn contains ZnS:Cu (zinc copper sulfide).
[0021] In one embodiment, the immobilization amount of hypocrellin in the nanofiber membrane is 195-208 nmol / mg; the covalent bonding of hypocrellin to the bacterial cellulose membrane is achieved by using cyanuric chloride (TCT) as a cross-linking agent, which forms a stable chemical bond between hypocrellin and bacterial cellulose.
[0022] In one embodiment, ZnS:Cu (zinc copper sulfide) is dispersed in PDMS (polydimethylsiloxane) at a mass fraction of 30wt% and evenly coated on the surface of TPU yarn. After thermal curing, ZnS:Cu (zinc copper sulfide) is evenly distributed on the surface of TPU (thermoplastic polyurethane elastomer) yarn.
[0023] The heat curing conditions were: temperature 80°C, time 30 minutes and nitrogen atmosphere to optimize the properties and maintain the flexibility and elasticity of the yarn.
[0024] The mass ratio of ZnS:Cu (zinc copper sulfide) to the mechanoluminescent fabric is 0.2-0.35:1, that is, each gram of the mechanoluminescent fabric contains 0.20-0.35g of ZnS:Cu (zinc copper sulfide).
[0025] In one embodiment, the photodynamic antibacterial layer only covers the forefoot and heel areas of the insole.
[0026] In one embodiment, the waterproof and breathable membrane layer is hydrophilically modified TPU with a thickness of 10-25 μm.
[0027] In one embodiment, the waterproof and breathable film layer is a new type of polymer waterproof material made of thermoplastic polyurethane elastomer (TPU) as the main material and introduced with hydrophilic groups. The introduction of hydrophilic groups makes the film waterproof and breathable at the same time, that is, it can prevent the penetration of liquid water (the film is dense and has no micropores on the surface), while allowing moisture to be conducted to the outside in the form of water vapor.
[0028] The waterproof and breathable membrane layer covers the surface of the glass beads to protect the glass beads and the waterproof and breathable performance. This layer is very thin and evenly covers the upper surface of the glass beads to form a protective layer while maintaining the breathable performance.
[0029] In one embodiment, the waterproof and breathable membrane layer covers the surface of the glass beads, the waterproof and breathable membrane layer at the top of the glass beads contacts the photodynamic antibacterial layer, and the other non-contact parts form a cavity between the waterproof and breathable membrane layer and the photodynamic antibacterial layer.
[0030] Benefits of cavities: (1) Protect the antibacterial layer: The cavity can provide a buffer space for the photodynamic antibacterial layer, reduce direct physical impact and friction, thereby protecting the antibacterial layer from damage and extending its service life. (2) Promote oxygen exchange: The cavity increases the circulation of oxygen around the antibacterial layer, helps the photosensitizer to produce more active oxygen species under light excitation, and enhances the antibacterial effect. (3) Enhance the photodynamic effect: The cavity may allow more light to reach the antibacterial layer because air has a lower light absorption rate than some solid materials, which helps to improve the photodynamic antibacterial efficiency.
[0031] The photodynamic antibacterial layer only has the forefoot and heel parts. Based on the above three considerations, the middle part is also a cavity. However, the cavity part is relatively small, and the effect is not very obvious.
[0032] In one embodiment, the coating layer is made of polyvinyl chloride, and glass beads are embedded on its upper surface. The portion of the glass beads embedded in the coating layer accounts for 60-70% of its overall volume, and the diameter of the glass beads is 0.3 mm. The glass beads are embedded on the upper surface of the coating layer, and the optical principle of light refraction, reflection and return in the glass beads is used to make the light as much as possible inside through reflection to be absorbed by the photosensitizer, so that the light generated by the force-induced luminescence is not easily lost from the bottom, greatly improving the utilization rate of light. The thickness of the coating layer is 0.5±0.1 mm (excluding the height of the protruding glass beads).
[0033] In one embodiment, the support layer is made of EVA material; the thickness of the support layer is 2±0.1 mm.
[0034] In one embodiment, the support layer is EVA-7470 or EVA-0628.
[0035] Beneficial effects of the utility model:
[0036] The utility model provides a flexible deodorizing insole with photodynamic antibacterial induced by mechanoluminescence, which solves the problems of poor durability, high cost and insufficient wearing comfort of antibacterial insoles in the prior art, and achieves the following technical effects:
[0037] Multi-layer structure design: The insole adopts a multi-layer structure, which effectively achieves the multiple effects of antibacterial deodorization and foot comfort. And through the design of each layer, the utilization rate of light is maximized to achieve a better antibacterial effect.
[0038] Optimized antibacterial layer material: The photodynamic antibacterial layer utilizes the combination of bamboo red fungus and chitosan to achieve a synergistic antibacterial effect, with a high antibacterial rate and a stable and lasting antibacterial effect.
[0039] Innovative application of mechanoluminescent technology: The mechanoluminescent fabric base contains ZnS:Cu mechanoluminescent particles, which can generate light when the foot is under force without external power supply or light stimulation, thereby activating the antibacterial layer and achieving high antibacterial efficiency.
[0040] Reasonable layout of the antibacterial layer: The photodynamic antibacterial layer only covers the forefoot and the heel, which are areas where sweat secretion on the soles of the human feet is concentrated, reducing unnecessary material use and lowering costs.
[0041] Environmental protection: The application of mechanoluminescent materials reduces pollution to the environment and meets the requirements of sustainable development.
[0042] The flexible deodorizing insole with mechanoluminescence induced photodynamic antibacterial provided by the utility model solves the problems of poor long-term antibacterial properties, high costs, and insufficient wearing comfort of existing antibacterial insoles through multi-layer structural design and innovative technical applications (innovatively combining mechanoluminescence technology and photodynamic antibacterial technology), achieves the effects of high-efficiency antibacterial and deodorizing, reduces costs, improves wearing comfort and environmental protection, and further improves the market competitiveness and user satisfaction of the product by optimizing the layout of the antibacterial layer and the use of materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0043] Figure 1 This is a schematic diagram of the structure of the insole of the utility model;
[0044] Figure 2 The triangular cross-section cotton and linen fibers of the breathable and moisture-absorbing layer of the utility model;
[0045] Figure 3 The utility model is a breathable and moisture-absorbing layer of cotton and linen fibers with a cross-shaped cross section;
[0046] Figure 4 This is a schematic diagram of the coverage of the photodynamic antibacterial layer of the utility model;
[0047] Figure 5 It is a cross-sectional view of the insole of the utility model;
[0048] Among them, 1 is a breathable and moisture-absorbing layer, 2 is a photodynamic antibacterial layer, 201 is a nanofiber membrane, 202 is a mechanoluminescent fabric, 3 is a waterproof and breathable membrane layer, 4 is a rubber coating layer, and 5 is a supporting layer. DETAILED DESCRIPTION
[0049] The following is a specific description of the utility model.
[0050] Example 1
[0051] like Figure 1 , 5 As shown, a flexible deodorizing insole for photodynamic antibacterial induced by mechanoluminescence in this embodiment comprises multiple stacked functional layers, which are, from top to bottom, a breathable and moisture-absorbing layer 1, a photodynamic antibacterial layer 2, a waterproof and breathable film layer 3, a coating layer 4 and a supporting layer 5. The adjacent functional layers are sewn together by sewing thread lock stitching or hot melt adhesive bonding;
[0052] The breathable and moisture-absorbing layer 1 is made of a blended fabric of cotton and linen fibers with a special cross-section;
[0053] The photodynamic antibacterial layer 2 is formed by sequentially stacking a nanofiber membrane 201 and a photoluminescent fabric 202 .
[0054] The thickness of the breathable and moisture-absorbing layer 1 is 1±0.1 mm.
[0055] The special-shaped cross-section is a triangle, quadrilateral, pentagon, hexagon or cross-shaped cross-section, such as Figure 2-3 shown.
[0056] The nanofiber membrane 201 is located on the lower side of the breathable and moisture-absorbing layer 1, and the electroluminescent fabric 202 is located on the upper side of the waterproof and moisture-permeable membrane layer 3; the thickness of the photodynamic antibacterial layer 2 is 1.5±0.1 mm.
[0057] The nanofiber membrane 201 is a bacterial cellulose membrane with hypocrellin and chitosan cross-linked at the interface; the mechanoluminescent fabric 202 is a fabric woven from TPU yarns; and the surface of the TPU yarns contains ZnS:Cu.
[0058] The solid loading amount of hypocrellin in the nanofiber membrane 201 is 195-208 nmol / mg; each gram of the mechanoluminescent fabric 202 contains 0.20-0.35 g of ZnS:Cu (zinc copper sulfide).
[0059] The photodynamic antibacterial layer 2 only covers the forefoot and heel of the insole. Figure 4 shown.
[0060] The waterproof and breathable membrane layer 3 is a hydrophilically modified TPU with a thickness of 10-25 μm.
[0061] The adhesive layer 4 is made of polyvinyl chloride, and glass beads are embedded on its upper surface. The portion of the glass beads embedded in the adhesive layer 4 accounts for 60-70% of its entire volume. The diameter of the glass beads is 0.3 mm. The thickness of the adhesive layer 4 is 0.5±0.1 mm.
[0062] The support layer 5 is made of EVA material; the thickness of the support layer 5 is 2±0.1 mm.
[0063] The working principle of this utility model:
[0064] When the user walks or exercises, the sole stress acts on the insole, especially the forefoot and the heel, and the mechanoluminescent fabric base layer in these parts is mechanically acted on. The mechanoluminescent particles produce dynamic luminescence under the stress, without the need for external power supply or light stimulation, thus reducing environmental pollution. The luminescence phenomenon activates the Hc-BC / CH nanofiber membrane in the photodynamic antibacterial layer, producing a photodynamic antibacterial effect, effectively inhibiting the reproduction of bacteria and fungi on the feet, and reducing foot odor.
[0065] Although the present invention has been disclosed as above in terms of preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.
Claims
1. A flexible deodorizing insole with photodynamic antibacterial induced by mechanoluminescence, characterized in that: It comprises a plurality of stacked functional layers, which are, from top to bottom, a breathable moisture absorption layer (1), a photodynamic antibacterial layer (2), a waterproof and moisture permeable membrane layer (3), a coating layer (4) and a support layer (5), and the adjacent functional layers are sewn together by sewing thread lock stitching or bonded by hot melt adhesive; The breathable and moisture-absorbing layer (1) is made of a blended fabric of cotton and linen fibers with a special-shaped cross-section; The photodynamic antibacterial layer (2) is formed by sequentially stacking a nanofiber membrane (201) and a mesoluminescent fabric (202).
2. The flexible deodorizing insole according to claim 1, characterized in that: The thickness of the breathable and moisture-absorbing layer (1) is 1±0.1 mm.
3. The flexible deodorizing insole according to claim 1, characterized in that: The special-shaped cross section is a triangle, a quadrilateral, a pentagon, a hexagon or a cross-shaped cross section.
4. The flexible deodorizing insole according to claim 1, characterized in that: The nanofiber membrane (201) is located on the lower side of the breathable and moisture-absorbing layer (1), and the electroluminescent fabric (202) is located on the upper side of the waterproof and moisture-permeable membrane layer (3); the thickness of the photodynamic antibacterial layer (2) is 1.5±0.1 mm.
5. The flexible deodorizing insole according to claim 1, characterized in that: The nanofiber membrane (201) is a bacterial cellulose membrane with hypocrellin and chitosan cross-linked at the interface; the mechanoluminescent fabric (202) is a fabric woven from TPU yarns.
6. The flexible deodorizing insole according to claim 1, characterized in that: The photodynamic antibacterial layer (2) only covers the forefoot and heel areas of the insole.
7. The flexible deodorizing insole according to claim 1, characterized in that: The waterproof and moisture-permeable membrane layer (3) is hydrophilically modified TPU and has a thickness of 10-25 μm.
8. The flexible deodorizing insole according to claim 1, characterized in that: The adhesive coating layer (4) is made of polyvinyl chloride, and its upper surface is inlaid with glass microbeads, the diameter of the glass microbeads is 0.3 mm; the thickness of the adhesive coating layer (4) is 0.5±0.1 mm.
9. The flexible deodorizing insole according to claim 1, characterized in that: The support layer (5) is made of EVA material; the thickness of the support layer (5) is 2±0.1 mm.