Epidemic prevention and sterilization sole product and production process thereof

Abstract

The invention provides an epidemic prevention and sterilization shoe sole product and a production process thereof, the epidemic prevention and sterilization shoe sole product comprises a rubber shoe sole layer, a copper sheet layer and an EVA shoe bed, the EVA shoe bed is arranged right above the rubber shoe sole layer, the EVA shoe bed and the rubber shoe sole layer are fixed on the rubber shoe sole layer through hot press molding, a copper sheet mounting slot is formed in one side, opposite to the rubber shoe sole layer, of the EVA shoe bed, and the copper sheet mounting slot is arranged in the copper sheet mounting slot. A copper sheet layer is fixedly installed in the copper sheet installation groove position, a marking window is formed in the middle of the rubber sole layer, and the marking window is right opposite to the copper sheet layer, and the production technology comprises the steps that S1, the rubber sole layer is prepared; s2, preparing an EVA footbed; s3, preparing a copper sheet layer; and S4, integrating and preparing a finished product of the outsole. According to the invention, the rubber sole layer is compounded below the EVA footbed, so that the wear resistance and the skid resistance of the sole can be greatly improved, and the copper ion material is mixed in the rubber sole layer, so that the sole has sterilization and degerming capabilities.

Description

Technical Field

[0001] This invention relates to the field of shoe equipment, and more particularly to a sterilization and disinfection shoe sole product and its manufacturing process. Background Technology

[0002] With the global spread of infectious diseases in recent years, people have become more aware of disease prevention. In outdoor environments, especially in densely populated areas and medical facilities, we are frequently exposed to numerous germs. To prevent users, especially healthcare workers, from bringing germs home through their shoes, highly effective antibacterial shoes are essential. Currently, most antibacterial shoes on the market utilize silver ion antibacterial fibers in the insoles or uppers. However, because these ions are insoluble, they can lead to the accumulation of heavy metals in the body, which can be detrimental to health in the long term. Combining copper with shoe sole materials, using antibacterial copper surfaces in hospitals can help reduce the chance of hospital-acquired infections (HAI) by up to 40% and effectively kill 97% of bacteria, many viruses, and fungal pathogens. Furthermore, the body needs more copper ions, and excess can be metabolized.

[0003] A new study presented at the First International Conference on Prevention and Infection Control held in Switzerland by the World Health Organization shows that the use of antibacterial copper surfaces in hospitals can help reduce the chance of hospital-acquired infections (HAI) by up to 40% and effectively kill 97% of bacteria, many viruses, and fungal pathogens. Targeting the five most commonly encountered pathogenic bacteria in daily life—including opportunistic respiratory infections caused by Staphylococcus aureus, immune system damage caused by the superbug MRSA, opportunistic infections affecting the lungs and urinary tract caused by Klebsiella pneumoniae and Pseudomonas aeruginosa, and diarrhea caused by Escherichia coli—the copper ion antibacterial shoes prepared in this application achieved a sterilization rate of over 99% in all these common environmental pathogens.

[0004] Furthermore, copper is an element naturally present in the human body, ranking third among trace elements after iron and zinc. It is essential for normal metabolism, causes no irritation or allergic reactions to human skin, and is completely safe for human health. Copper also acts as a catalyst in intracellular oxidation processes, inhibiting bacteria and viruses and possessing antibacterial and antiviral properties.

[0005] There is a need for a new footwear manufacturing process that combines copper with shoe sole materials to solve the above problems. Summary of the Invention

[0006] This invention provides an antibacterial and sterilizing shoe sole product and its manufacturing process. By technically modifying the existing shoe product manufacturing process, it solves the problems of existing shoe products lacking antibacterial and antiviral effects and having limited functions.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] An antibacterial and sterilizing shoe sole product includes a rubber insole, a copper sheet layer, and an EVA shoe bed. The EVA shoe bed is positioned directly above the rubber insole and is fixed to the rubber insole by hot pressing. A copper sheet mounting groove is provided on the side of the EVA shoe bed facing the rubber insole, and a copper sheet layer is fixedly installed in the copper sheet mounting groove. A marking window is provided in the middle of the rubber insole, and the marking window is positioned directly opposite the copper sheet layer.

[0009] Preferably, there are two marking windows, which are spaced apart vertically. The copper sheet layer includes a central portion and a surrounding portion. The central portion is an I-shaped solid copper structure. The upper and lower ends of the central portion are respectively positioned opposite the marking windows at the upper and lower positions. The surrounding portion is distributed at intervals around the outer periphery of the central portion. The center of the central portion has an inwardly recessed groove structure for the rubber shoe sole to pass through between the marking windows. The central portion extends along the edge of the marking window towards the rubber shoe sole and the EVA shoe footbed with a sealing edge. The bottom surface of the rubber shoe sole also has anti-slip texture.

[0010] Preferably, the rubber shoe sole is made of a mixture of rubber RB particles and antibacterial material.

[0011] Preferably, the antibacterial material comprises copper ion powder, with the weight ratio of rubber RB particles to rubber shoe sole being 90% and copper powder 10%.

[0012] Preferably, the antibacterial material comprises silver ion powder, with the weight ratio of rubber RB particles to the rubber shoe sole being 95% and silver powder 5%.

[0013] A manufacturing process for antibacterial and sterilizing shoe soles includes the following steps:

[0014] S1, preparing the rubber shoe sole, involves mixing a mixture of 90% rubber RB particles and 10% copper powder in an internal mixer, followed by injection vulcanization molding and cooling.

[0015] S2, EVA shoe bed preparation, using hot pressing molding process, the mixed EVA material is injected into the heated processing mold, the model is fixed to the heating plate by pressure, the melting temperature and time of the mixed EVA material are controlled, after melting, hardening and cooling, the finished EVA shoe bed model is taken out.

[0016] S3, prepare copper sheet layer. The copper sheet layer is a thin sheet structure formed by pressing and sintering copper powder. Prepare the middle part and the surrounding part of the sheet respectively. The middle part is an I-shaped solid copper structure and the surrounding part is a sheet-like copper sheet structure.

[0017] S4. Integrate and prepare the finished outsole by embedding the copper sheet layer into the copper sheet installation slot reserved on the bottom surface of the EVA shoe bed. Then, place the rubber shoe bottom and the EVA shoe bed into the molding mold for hot pressing. The shoe is formed by hot pressing for 9 minutes at a temperature of 150-200℃. Then, cold water is continuously poured on for 7 minutes to cold press and shape the shoe. The mold is then opened and the finished shoe sole is taken out.

[0018] Preferably, in step S1, the preparation of the rubber shoe sole further includes the following steps:

[0019] S101, Rubber preform compounding: The rubber raw materials are refurbished to make them plastic, and then the rubber preforms are compounded with various compounding agents in an internal mixer.

[0020] S102, Mixing sulfur, vulcanization accelerator and copper powder: Sulfur, vulcanization accelerator and copper powder are added to the rubber material obtained in step S101 and mixed in a two-roll mill, wherein the gravity ratio of rubber material to copper powder is 90% rubber RB particles and 10% copper powder.

[0021] S103, Outsole Molding Stage: The mixed rubber material is injected into the molding die adjusted to the appropriate vulcanization temperature using an injection molding machine. Vulcanization and shaping are carried out by a hydraulic press and boiler. After completion, cooling is performed and then finishing operations are carried out.

[0022] Preferably, in step S101, the mixing time in the internal mixer is 10-20 min, and the mixing temperature is 120-150℃.

[0023] Preferably, in step S102, the mixing time on the two-roll mill is 10-20 min, and the mixing temperature is 80-120℃.

[0024] Preferably, in step S103, the hot pressing time is 10 minutes per mold, and the hot pressing temperature is 150-155℃.

[0025] The beneficial effects of this invention are as follows:

[0026] This invention incorporates a rubber insole beneath the EVA footbed, which significantly improves the wear resistance and slip resistance of the sole. The rubber insole also contains copper or silver ion materials, giving it antibacterial and sterilization capabilities.

[0027] The outsole is made of rubber, which is mainly for wear resistance and slip resistance. The mixed copper ion material is sturdy, durable, colorfast, and corrosion resistant, and can continuously kill 99.9% of harmful bacteria. The mixed silver ion material, in addition to its bactericidal function, is also available in a variety of colors.

[0028] EVA shoe footbeds are hot-pressed to reduce weight and fit the rubber sole more tightly. The bottom surface of the EVA shoe footbed also has slots for installing copper sheets, making it easy to embed the copper sheets into the EVA shoe footbed.

[0029] This invention utilizes a three-dimensional copper sheet structure, making it sturdy, durable, resistant to discoloration and corrosion, and capable of continuously killing 99.9% of harmful bacteria. Besides symbolizing the product's antibacterial copper properties, the three-dimensional structure allows for a firm bond between the rubber outsole and the EVA footbed. The copper sheet is embedded within the EVA footbed, passing through the outsole. The multi-layered design, including a marking window, not only highlights the antibacterial function of the copper on the sole but also enhances its effectiveness. The surrounding copper sheets increase the contact area, ensuring 100% embedding. Attached Figure Description

[0030] Figure 1 This is a side view of the invention;

[0031] Figure 2 This is a schematic diagram of the bottom structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention along line A1-A2;

[0033] Figure 4 This is an enlarged schematic diagram of the window area of ​​the present invention;

[0034] Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention, B1-B2.

[0035] Figure 6 This is a schematic diagram of the cross-sectional structure of the present invention, C1-C2.

[0036] Figure 7 This is a schematic diagram showing the distribution of the copper sheet layers in this invention;

[0037] Figure 8 This is a schematic diagram of the production process steps of the present invention;

[0038] Figure 9 This is a schematic diagram of the manufacturing process steps for preparing the rubber shoe sole of the present invention;

[0039] The diagram shows the following symbols: 1. Rubber shoe bottom layer; 2. Copper sheet layer; 21. Middle part; 21. Groove structure; 211. Edge sealing; 212. Surrounding sheet; 22. EVA shoe bed; 3. Marking window; 4. Anti-slip texture; 5. Detailed Implementation

[0040] The specific content of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0041] Please see Figure 1-9 As shown, the present invention provides an antibacterial and sterilizing shoe sole product, including a rubber shoe sole 1, a copper sheet layer 2, and an EVA shoe bed 3. The EVA shoe bed 3 is disposed directly above the rubber shoe sole 1, and the EVA shoe bed 3 and the rubber shoe sole 1 are fixed to the rubber shoe sole 1 by hot pressing. A copper sheet mounting groove is opened on the side of the EVA shoe bed 3 facing the rubber shoe sole 1. The copper sheet layer 2 is fixedly installed in the copper sheet mounting groove. A marking window 4 is opened in the middle of the rubber shoe sole 1, and the marking window 4 is positioned directly opposite the copper sheet layer 2.

[0042] Furthermore, there are two marking windows 4, which are spaced vertically. The copper sheet layer 2 includes a central portion 21 and surrounding sheet 22. The central portion 21 is an I-shaped solid copper structure. The upper and lower ends of the central portion 21 are respectively positioned opposite the marking windows at the upper and lower positions. The surrounding sheet 22 is distributed at intervals around the outer periphery of the central portion 21. The center of the central portion 21 has an inwardly recessed groove structure 211. The groove structure 211 allows the rubber shoe bottom layer 1 between the marking windows 4 to pass through. The rubber shoe bottom layer 1 passes through the groove structure 211 at the center of the central portion 21, making the central portion 21 of the copper sheet layer 2 more securely installed and less likely to fall off.

[0043] Furthermore, the middle part 21 extends along the edge of the marking window 4 towards the rubber shoe bottom 1 and the EVA shoe bed 3 with a sealing edge 212. The sealing edge allows the copper sheet layer 2 to be embedded between the rubber shoe bottom 1 and the EVA shoe bed 3, making the fixation more secure and the sealing better.

[0044] To achieve better anti-slip performance, the bottom surface of the rubber shoe is also equipped with anti-slip textures 5.

[0045] Furthermore, the rubber shoe sole 1 is made of a mixture of rubber RB particles and antibacterial material.

[0046] Furthermore, to achieve the antibacterial effect of the antibacterial material, the antibacterial material includes copper ion powder, with the rubber shoe sole 1 comprising 90% rubber RB particles and 10% copper powder by weight. The mixed copper ion material is a robust, durable, discoloration-resistant, and corrosion-resistant material, and can continuously kill 99.9% of harmful bacteria.

[0047] Furthermore, in another embodiment 2, the antibacterial material can be silver ion powder, wherein the weight ratio of the rubber shoe sole 1 is 95% rubber RB particles and 5% silver powder. The mixed silver ion material, in addition to its antibacterial function, can also be multi-colored.

[0048] A manufacturing process for the aforementioned antibacterial and sterilizing shoe sole products is also provided, including the following steps:

[0049] S1, the rubber shoe sole 1 is prepared by mixing a mixture of 90% rubber RB particles and 10% copper powder in an internal mixer, followed by injection vulcanization molding and cooling.

[0050] S2, EVA shoe bed 3 is prepared by hot pressing molding process. The mixed EVA material is injected into the heated processing mold and the model is fixed on the heating plate by pressure. The melting temperature and time of the mixed EVA material are controlled. After melting, hardening and cooling, the finished EVA shoe bed 3 model is taken out.

[0051] S3, prepare copper sheet layer 2. Copper sheet layer 2 is a thin sheet structure formed by pressing and sintering copper powder. Prepare the middle part 21 and the surrounding part thin sheet 22 respectively. The middle part 21 is an I-shaped solid copper structure and the surrounding part thin sheet 22 is a sheet-like copper sheet structure.

[0052] S4. Integrate and prepare the finished outsole. Embed the copper sheet layer 2 into the copper sheet installation slot reserved on the bottom surface of the EVA shoe bed 3. Then, place the rubber shoe bottom layer 1 and the EVA shoe bed 3 into the molding mold for hot pressing. The mold is formed by hot pressing for 9 minutes at a hot press temperature of 150-200℃. Then, cold water is continuously poured on for 7 minutes to cold press and shape. Open the mold and take out the finished shoe sole.

[0053] Furthermore, in step S1, the preparation of the rubber shoe sole 1 also includes the following steps:

[0054] S101, Rubber preform compounding: The rubber raw materials are refurbished to make them plastic, and then the rubber preforms are compounded with various compounding agents in an internal mixer.

[0055] S102, Mixing sulfur, vulcanization accelerator and copper powder: Sulfur, vulcanization accelerator and copper powder are added to the rubber material obtained in step S101 and mixed in a two-roll mill, wherein the gravity ratio of rubber material to copper powder is 90% rubber RB particles and 10% copper powder.

[0056] The dosage of sulfur and vulcanization accelerator should be adjusted according to the amount of rubber material and the mixing ratio should be added according to the commonly used rubber vulcanization ratio formula.

[0057] S103, Outsole Molding Stage: The mixed rubber material is injected into the molding die adjusted to the appropriate vulcanization temperature using an injection molding machine. Vulcanization and shaping are carried out by a hydraulic press and boiler. After completion, cooling is performed and then finishing operations are carried out.

[0058] The main ingredients are mixed in an internal mixer, then the other ingredients are added and mixed again at an appropriate temperature. The specific temperature, time, and number of pounding stages are adjusted by each shoe factory according to their actual situation. Under the action of the high-speed internal mixer, the large molecules in the rubber are disrupted, requiring time for the rubber molecules to recombine. Additionally, the compounding agents undergo a re-uniform migration process within the rubber compound. Therefore, after internal mixing, it is generally better to cool the rubber with cold water, store it with a release agent, and let it sit for 24 hours before use, as this significantly improves the toughness of the rubber compound.

[0059] During mixing in an internal mixer, the two rotors rotate relative to each other, drawing the rubber compound from the feed inlet into the roller gap. There, the compound is subjected to compression and shearing by the rotors. This shearing and friction from the rotors causes the rubber compound's temperature to rise rapidly, its viscosity to decrease, and its surface wettability to increase, ensuring thorough contact between the rubber and the compounding agents. The prismatic shape of the rotors causes the rubber compound to move axially along the rotor, achieving a mixing effect and ensuring uniform mixing and a certain degree of dispersion between the rubber and the compounding agents. Compared to open mills, internal mixers offer significantly higher mixing efficiency.

[0060] Furthermore, in order to obtain a better mixing effect, in step S101, the mixing time of the internal mixer is 15 minutes and the mixing temperature is 130°C.

[0061] Furthermore, in order to obtain a better mixing effect, in step S102, the mixing time on the two-roll open mill is 10-20 min and the mixing temperature is 100℃.

[0062] Furthermore, in step S103, the vulcanization time is 10 minutes per mold, and the vulcanization temperature is 150-155℃.

[0063] Vulcanization is a process typically required for rubber soles in shoe manufacturing. Most athletic shoe soles on the market undergo this final molding process. The normal high-temperature, rapid vulcanization system (hot pressing process) operates at around 150 degrees Celsius, and the time should not be too long, as excessively high temperatures can severely damage the material's properties, rendering it ineffective. A release agent is usually used between the mold and the rubber to prevent sticking and facilitate easy demolding.

[0064] This invention has the following characteristics:

[0065] This invention incorporates a rubber insole beneath the EVA footbed, which significantly improves the wear resistance and slip resistance of the sole. The rubber insole also contains copper or silver ion materials, giving it antibacterial and sterilization capabilities.

[0066] The outsole is made of rubber, which is mainly for wear resistance and slip resistance. The mixed copper ion material is sturdy, durable, colorfast, and corrosion resistant, and can continuously kill 99.9% of harmful bacteria. The mixed silver ion material, in addition to its bactericidal function, is also available in a variety of colors.

[0067] EVA shoe footbeds are hot-pressed to reduce weight and fit the rubber sole more tightly. The bottom surface of the EVA shoe footbed also has slots for installing copper sheets, making it easy to embed the copper sheets into the EVA shoe footbed.

[0068] This invention utilizes a three-dimensional copper sheet structure, making it sturdy, durable, resistant to discoloration and corrosion, and capable of continuously killing 99.9% of harmful bacteria. Besides symbolizing the product's antibacterial copper properties, the three-dimensional structure allows for a firm bond between the rubber outsole and the EVA footbed. The copper sheet is embedded within the EVA footbed, passing through the outsole. The multi-layered design, including a marking window, not only highlights the antibacterial function of the copper on the sole but also enhances its effectiveness. The surrounding copper sheets increase the contact area, ensuring 100% embedding.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

[0070] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0071] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" 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 mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. An antiepidemic and sterilizing shoe sole product, characterized in that, The shoe includes a rubber shoe sole, a copper sheet layer, and an EVA shoe bed. The EVA shoe bed is positioned directly above the rubber shoe sole and is fixed to the rubber shoe sole by thermoforming. A copper sheet mounting slot is provided on the side of the EVA shoe bed facing the rubber shoe sole, and a copper sheet layer is fixedly installed in the copper sheet mounting slot. A marking window is provided in the middle of the rubber shoe sole, and the marking window is positioned directly opposite the copper sheet layer.

2. The antiepidemic and sterilization shoe sole product according to claim 1, characterized in that, There are two marking windows, which are spaced apart vertically. The copper sheet layer includes a central part and a surrounding part. The central part is an I-shaped solid copper structure. The upper and lower ends of the central part are respectively positioned opposite the marking windows at the upper and lower positions. The surrounding part is distributed at intervals around the outer periphery of the central part. The center of the central part has an inwardly recessed groove structure for the rubber shoe bottom to pass through between the marking windows. The central part extends along the edge of the marking window to the rubber shoe bottom and the EVA shoe footbed with a sealing edge. The bottom surface of the rubber shoe bottom is also provided with anti-slip texture.

3. The antibacterial and sterilizing shoe sole product according to claim 1, characterized in that, The rubber shoe sole is made of a mixture of rubber RB particles and antibacterial materials.

4. The antibacterial and sterilizing shoe sole product according to claim 1, characterized in that, The antibacterial material includes copper ion powder, with the rubber shoe sole comprising 90% rubber RB particles and 10% copper powder by weight.

5. The antibacterial and sterilizing shoe sole product according to claim 1, characterized in that, The antibacterial material includes silver ion powder, with the rubber shoe sole comprising 95% rubber RB particles and 5% silver powder by weight.

6. A manufacturing process for an antibacterial and sterilizing shoe sole product, characterized in that, Includes the following steps: S1, preparing the rubber shoe sole, involves mixing a mixture of 90% rubber RB particles and 10% copper powder in an internal mixer, followed by injection vulcanization molding and cooling. S2, EVA shoe bed preparation, using hot pressing molding process, the mixed EVA material is injected into the heated processing mold, the model is fixed to the heating plate by pressure, the melting temperature and time of the mixed EVA material are controlled, after melting, hardening and cooling, the finished EVA shoe bed model is taken out. S3, prepare copper sheet layer. The copper sheet layer is a thin sheet structure formed by pressing and sintering copper powder. Prepare the middle part and the surrounding part of the sheet respectively. The middle part is an I-shaped solid copper structure and the surrounding part is a sheet-like copper sheet structure. S4. Integrate and prepare the finished outsole by embedding the copper sheet layer into the copper sheet installation slot reserved on the bottom surface of the EVA shoe bed. Then, place the rubber shoe bottom and the EVA shoe bed into the molding mold for hot pressing. The shoe is formed by hot pressing for 9 minutes at a temperature of 150-200℃. Then, cold water is continuously poured on for 7 minutes to cold press and shape the shoe. The finished shoe sole is then removed from the mold.

7. The manufacturing process of an antibacterial and sterilizing shoe sole product according to claim 6, characterized in that, In step S1, the preparation of the rubber shoe sole also includes the following steps: S101, Rubber preform compounding: The rubber raw materials are refurbished to make them plastic, and then the rubber preforms are compounded with various compounding agents in an internal mixer. S102, Mixing sulfur, vulcanization accelerator and copper powder: Sulfur, vulcanization accelerator and copper powder are added to the rubber material obtained in step S101 and mixed in a two-roll mill, wherein the gravity ratio of rubber material to copper powder is 90% rubber RB particles and 10% copper powder. S103, Outsole Molding Stage: The mixed rubber material is injected into the molding die adjusted to the appropriate vulcanization temperature using an injection molding machine. Vulcanization and shaping are carried out by a hydraulic press and boiler. After completion, cooling is performed and then finishing operations are carried out.

8. The manufacturing process of an antibacterial and sterilizing shoe sole product according to claim 7, characterized in that, In step S101, the mixing time in the internal mixer is 10-20 min, and the mixing temperature is 120-150℃.

9. The manufacturing process of an antibacterial and sterilizing shoe sole product according to claim 7, characterized in that, In step S102, the mixing time on the two-roll mill is 10-20 min, and the mixing temperature is 80-120℃.

10. The manufacturing process of an antibacterial and sterilizing shoe sole product according to claim 7, characterized in that, In step S103, the hot pressing time is 10 minutes per mold, and the hot pressing temperature is 150-155℃.

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