Antibacterial insole and preparation method thereof

Abstract

The invention provides a bacteriostatic insole and a preparation method thereof, and belongs to the technical field of insoles. Which comprises insole components and a preparation method thereof, and is characterized in that the insole components comprise the following raw materials in parts by weight: an ethylene-vinyl acetate copolymer, active peptide, polyethylene, an olefin block copolymer, an olefin-acrylate copolymer, a nylon elastomer, a low-temperature foaming agent, stearic acid, zinc stearate, wormwood liquid and metal active zinc. The preparation method of the insole comprises the following steps: S1, banburying and mixing; s2, open milling and tabletting; s3, performing granulation; s4, cooling the granules, and standing; s5, vulcanization foaming and mold pressing; and S7, secondary vulcanization and mold pressing. According to the antibacterial insole and the preparation method thereof, the insole has excellent antibacterial performance, enhanced comfort, ultra-light design, good wear resistance and durability, excellent air permeability and wide adaptability.

Description

Technical Field

[0001] The invention provides an antibacterial insole and a preparation method thereof, belonging to the technical field of insoles. Background Art

[0002] Insoles are a layer of padding placed inside the shoe between the foot and the sole. Their main function is to improve wearing comfort, provide foot support, and improve the environment inside the shoe. Insoles can be made of a variety of materials, such as foam, gel, cotton, leather, or memory foam, and insoles of different materials vary in comfort, support, and breathability.

[0003] Chinese patent publication number 115336838A discloses an antibacterial and odor-absorbing wormwood insole, a preparation method and application thereof. The insole material is composed of the following components by mass percentage: 40-60% polymer polyol, 25-35% isocyanate, 3-7% wormwood powder, 1-3% activated carbon, 2-6% chain extender, and 1-3% foaming agent. However, the above method has the problem of general antibacterial effect and rapid decrease in antibacterial performance after repeated wearing.

[0004] Therefore, in view of this, the existing structure is studied and improved, and an antibacterial insole and a preparation method thereof are proposed to solve the above-mentioned problems. Summary of the invention

[0005] The invention discloses an antibacterial insole and a preparation method thereof. The insole has excellent antibacterial performance, enhanced comfort, ultralight design, good wear resistance and durability, excellent air permeability and wide adaptability.

[0006] In order to solve the above problems, the present invention proposes a technical solution: including an insole component and a preparation method thereof, characterized in that the insole component comprises the following components in parts by weight:

[0007]

[0008] The insole preparation method is as follows:

[0009] S1, mixing and mixing: put ethylene-vinyl acetate copolymer, active peptide, polyethylene, olefin block copolymer, ethylene-acrylate copolymer, nylon elastomer, low-temperature foaming agent, stearic acid, zinc stearate, wormwood liquid, metal active zinc, and masterbatch into the heating cylinder of the internal mixer for internal mixing, press the heating cylinder with 8KG air pressure, and when the temperature rises to the range of 90±1℃-100±1℃, turn the material once for every 5℃ rise in temperature;

[0010] S2, open milling and sheeting: the temperature of the open mill wheel table is set to 70±5°C, and the roller spacing is 8-10mm; the temperature of the open mill wheel table is maintained at 70±5°C, and the material obtained in step S1 is pressed into a thin sheet by the rollers of the open mill, and the pressed thin sheet is pressed again by the rollers; the roller spacing of the open mill is set to 4-6mm, the temperature of the open mill wheel table is maintained unchanged, and the prepared thin sheet is pressed twice by the rollers;

[0011] S3, granulation: set the temperature of the granulator: the die temperature is 85±5°C, the first electric heating stage is 90±5°C, the second electric heating stage is 90+5°C, the third electric heating stage is 90±5°C, and the fourth electric heating stage is 90±5°C; the flakes prepared in step S2 are passed through the granulator to obtain pellets;

[0012] S4, pellet cooling and standing: pellets are diverted to the mixing barrel through the vibrating screen, the mixing barrel is turned on for cooling and circulating water, and stirred for 25-30 minutes; after the pellet temperature drops to 50°C, the pellets are discharged and stood for more than 24 hours;

[0013] S5, vulcanization foaming, molding: the vulcanization foaming machine is set to a machine pressure of 150-180kg / C㎡, and a machine temperature of 180-185℃; the pellets are vulcanized in the machine mold for 12-15min, and after cooling and taking out, an ultra-light, highly elastic, and wear-resistant semi-finished sole is obtained;

[0014] S6, semi-finished soles are left to stand: the semi-finished soles obtained in step S4 are left to stand for more than 24 hours;

[0015] S7, secondary vulcanization, molding: Use a cloth wheel to remove the surface of both sides of the semi-finished sole, and then perform secondary vulcanization and molding to finalize the shape. After cooling and molding, you can get an ultra-light, highly elastic and wear-resistant sole product.

[0016] Furthermore, the nylon elastomer adopts a new material PEBA-ES, which is a thermoplastic nylon elastomer mixture (TPEA) with nylon 12 elastomer (PEBA) and hydrogenated styrene-butadiene block copolymer (ES) as the main base materials.

[0017] Furthermore, the low-temperature foaming agent is used when the insole is a translucent white insole.

[0018] Furthermore, in step S1, an internal mixer is used and the temperature of the internal mixer is 80±1°C.

[0019] Furthermore, in step S1, when the temperature of the internal mixer reaches 100±1°C, active zinc oxide, foaming agent and odorless bridging agent are poured in, and when the temperature of the internal mixer rises to 115±1°C, the mixing tank is opened to stir the materials, and the materials are discharged when the set temperature reaches 120±1°C.

[0020] Furthermore, in step S3, the pelletizing speed of the pelletizer is set as follows: the spindle speed is 40-45 rpm, and the cutter speed is 110-25 rpm.

[0021] Furthermore, during the pressing process in step S7, the mold temperature is 175±5° C. and the holding time is 450 seconds, so that the sole is fully vulcanized again.

[0022] Due to the adoption of the above technical solution, the antibacterial insole and preparation method thereof of the present invention have the following beneficial effects:

[0023] 1. Excellent antibacterial performance: The wormwood liquid and metallic active zinc added to the insole have significant antibacterial effects, which can effectively inhibit the growth of bacteria and fungi, help reduce uncomfortable odors and foot diseases caused by bacterial growth, and ensure that the wearer's feet remain fresh and healthy.

[0024] 2. Enhanced comfort: The use of nylon elastomer (PEBA-ES) and other high-elastic materials makes the insole have good flexibility and comfort. Even if worn for a long time, it can effectively reduce foot fatigue, provide a comfortable feeling, and is suitable for all kinds of activities.

[0025] 3. Ultra-light design: The ultra-light feature of the insole comes from low-temperature foaming technology, which significantly reduces the weight while maintaining strength and support. This feature is particularly suitable for sports shoes and daily shoes, reducing the burden on the feet and improving sports performance.

[0026] 4. Wear resistance and durability: The use of high-quality polymers and secondary vulcanized insoles ensures the wear resistance and tear resistance of the insoles. They can withstand long-term use without deformation, thus extending the service life of the insoles.

[0027] 5. Good breathability: The application of low-temperature foaming agent not only provides a sense of lightness, but also improves the breathability of the insole, helps perspiration and keeps dry, reduces bacteria and odor in humid environments, and increases wearing comfort.

[0028] 6. Strong adaptability: The multi-layer composite material design of the insole can adapt to different types of shoes (such as sports shoes, casual shoes, work shoes, etc.) and different usage scenarios (such as daily wear, sports, outdoor activities, etc.), and has good applicability. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The present application fully explains the problems of the prior art in the technical background, and there are no superordinate or general problems. The problems to be solved by the present application are described in detail in the following invention content and specific implementation methods, the technical problems to be solved by the technical scheme are clarified, and it is determined that the technical scheme of the present application has beneficial effects relative to the objective prior art.

[0031] Example 1

[0032] The present invention provides an antibacterial insole and a preparation method thereof, comprising an insole component and a preparation method thereof, wherein the insole component comprises the following components in parts by weight:

[0033]

[0034]

[0035] The insole preparation method is as follows:

[0036] S1, mixing and mixing: put ethylene-vinyl acetate copolymer, active peptide, polyethylene, olefin block copolymer, ethylene-acrylate copolymer, nylon elastomer, low-temperature foaming agent, stearic acid, zinc stearate, wormwood liquid, metal active zinc, and masterbatch into the heating cylinder of the internal mixer for internal mixing, press the heating cylinder with 8KG air pressure, and when the temperature rises to 90°C, turn the material once for every 5°C rise in temperature;

[0037] S2, open milling and sheeting: the temperature of the open mill wheel table is set to 70°C, and the roller spacing is 8mm; the temperature of the open mill wheel table is maintained at 70°C, and the material obtained in step S1 is pressed into a thin sheet by the open mill roller, and the pressed thin sheet is pressed again by the roller; the roller spacing of the open mill is set to 4-6mm, the temperature of the open mill wheel table is maintained unchanged, and the prepared thin sheet is pressed twice by the roller;

[0038] S3, granulation: set the temperature of the granulator: the die head temperature is 85°C, the first electric heating stage is 90°C, the second electric heating stage is 90°C, the third electric heating stage is 90°C, and the fourth electric heating stage is 90°C; the flakes prepared in step S2 are passed through the granulator to obtain granules;

[0039] S4, pellet cooling and standing: pellets are diverted to the mixing barrel through the vibrating screen, the mixing barrel is turned on for cooling and circulating water, and stirred for 25 minutes; after the pellet temperature drops to 50°C, the pellets are discharged and stood for more than 25 hours;

[0040] S5, vulcanization foaming and molding: the vulcanization foaming machine is set to a machine pressure of 150kg / C㎡ and a machine temperature of 180℃; the pellets are vulcanized in the machine mold for 12 minutes, and after cooling and taking out, an ultra-light, highly elastic and wear-resistant semi-finished sole is obtained;

[0041] S6, semi-finished soles are left to stand: the semi-finished soles obtained in step S4 are left to stand for more than 24 hours;

[0042] S7, secondary vulcanization, molding: Use a cloth wheel to remove the surface of both sides of the semi-finished sole, and then perform secondary vulcanization and molding to finalize the shape. After cooling and molding, you can get an ultra-light, highly elastic and wear-resistant sole product.

[0043] The nylon elastomer adopts the new material PEBA-ES, which is a thermoplastic nylon elastomer mixture (TPEA) with nylon 12 elastomer (PEBA) and hydrogenated styrene-butadiene block copolymer (ES) as the main base materials.

[0044] The low-temperature foaming agent is used when the insole is a translucent white insole.

[0045] In the step S1, an internal mixer is used and the temperature of the internal mixer is 80°C.

[0046] In the step S1, when the temperature of the internal mixer reaches 100°C, active zinc oxide, foaming agent and odorless bridging agent are poured in, and when the temperature of the internal mixer rises to 115±1°C, the mixing tank is opened to stir the materials, and the materials are discharged when the set temperature reaches 120°C.

[0047] The pelletizing speed of the pelletizer in step S3 is set as follows: the main shaft speed is 40 rpm, and the cutter speed is 110-25 rpm.

[0048] During the molding in step S7, the mold temperature is 175° C. and the holding time is 450 seconds, so that the sole is fully vulcanized again.

[0049] The insole is well formed, moderately soft and hard, and has normal color.

[0050] Example 2

[0051] The present invention provides an antibacterial insole and a preparation method thereof, including an insole component and a preparation method thereof, wherein the insole component comprises the following components in parts by weight:

[0052]

[0053] The insole preparation method is as follows:

[0054] S1, mixing and mixing: put ethylene-vinyl acetate copolymer, active peptide, polyethylene, olefin block copolymer, ethylene-acrylate copolymer, nylon elastomer, low-temperature foaming agent, stearic acid, zinc stearate, wormwood liquid, metal active zinc, and masterbatch into the heating cylinder of the internal mixer for internal mixing, press the heating cylinder with 8KG air pressure, and when the temperature rises to 98°C, turn the material once for every 5°C rise in temperature;

[0055] S2, open milling and sheeting: the temperature of the open mill wheel table is set to 75°C, and the roller spacing is 10mm; the temperature of the open mill wheel table is maintained at 75°C, and the material obtained in step S1 is pressed into a thin sheet by the open mill roller, and the pressed thin sheet is pressed again by the roller; the roller spacing of the open mill is set to 4-6mm, the temperature of the open mill wheel table is maintained unchanged, and the prepared thin sheet is pressed twice by the roller;

[0056] S3, granulation: set the temperature of the granulator: the die head temperature is 95°C, the first electric heating stage is 95°C, the second electric heating stage is 95°C, the third electric heating stage is 95°C, and the fourth electric heating stage is 95°C; the flakes prepared in step S2 are passed through the granulator to obtain granules;

[0057] S4, pellet cooling and standing: pellets are diverted to a mixing barrel through a vibrating screen, the mixing barrel is turned on for cooling and circulating water, and stirred for 30 minutes; after the pellet temperature drops to 50°C, the pellets are discharged and left to stand for more than 24 hours;

[0058] S5, vulcanization foaming and molding: the vulcanization foaming machine is set to a machine pressure of 170kg / C㎡ and a machine temperature of 185℃; the pellets are vulcanized in the machine mold for 12-15min, and after cooling and taking out, an ultra-light, highly elastic and wear-resistant semi-finished sole is obtained;

[0059] S6, semi-finished soles are left to stand: the semi-finished soles obtained in step S4 are left to stand for more than 24 hours;

[0060] S7, secondary vulcanization, molding: Use a cloth wheel to remove the surface of both sides of the semi-finished sole, and then perform secondary vulcanization and molding to finalize the shape. After cooling and molding, you can get an ultra-light, highly elastic and wear-resistant sole product.

[0061] The nylon elastomer adopts the new material PEBA-ES, which is a thermoplastic nylon elastomer mixture (TPEA) with nylon 12 elastomer (PEBA) and hydrogenated styrene-butadiene block copolymer (ES) as the main base materials.

[0062] The low-temperature foaming agent is used when the insole is a translucent white insole.

[0063] In the step S1, an internal mixer is used and the temperature of the internal mixer is 80±1°C.

[0064] In the step S1, when the temperature of the internal mixer reaches 101°C, active zinc oxide, foaming agent and odorless bridging agent are poured in, and when the temperature of the internal mixer rises to 115±1°C, the mixing tank is opened to stir the materials, and the materials are discharged when the set temperature reaches 121°C.

[0065] The pelletizing speed of the pelletizer in step S3 is set as follows: the main shaft speed is 43 rpm, and the cutter speed is 110-25 rpm.

[0066] During the molding in step S7, the mold temperature is 180° C. and the holding time is 450 seconds, so that the sole is fully vulcanized again.

[0067] The insole is well formed, moderately soft and hard, and has normal color.

[0068] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design structures and embodiments similar to the technical solution without creativity, which should all fall within the protection scope of the present invention.

Claims

1. An antibacterial insole and a preparation method thereof, comprising an insole component and a preparation method thereof, characterized in that: The insole composition comprises the following components by weight: The insole preparation method is as follows: S1, mixing and mixing: put ethylene-vinyl acetate copolymer, active peptide, polyethylene, olefin block copolymer, ethylene-acrylate copolymer, nylon elastomer, low-temperature foaming agent, stearic acid, zinc stearate, wormwood liquid, metal active zinc, and masterbatch into the heating cylinder of the internal mixer for internal mixing, press the heating cylinder with 8KG air pressure, and when the temperature rises to the range of 90±1℃-100±1℃, turn the material once for every 5℃ rise in temperature; S2, open milling and sheeting: the temperature of the open mill wheel table is set to 70±5°C, and the roller spacing is 8-10mm; the temperature of the open mill wheel table is maintained at 70±5°C, and the material obtained in step S1 is pressed into a thin sheet by the rollers of the open mill, and the pressed thin sheet is pressed again by the rollers; the roller spacing of the open mill is set to 4-6mm, the temperature of the open mill wheel table is maintained unchanged, and the prepared thin sheet is pressed twice by the rollers; S3, granulation: set the temperature of the granulator: the die temperature is 85±5°C, the first electric heating stage is 90±5°C, the second electric heating stage is 90+5°C, the third electric heating stage is 90±5°C, and the fourth electric heating stage is 90±5°C; the flakes prepared in step S2 are passed through the granulator to obtain pellets; S4, pellet cooling and standing: pellets are diverted to the mixing barrel through the vibrating screen, the mixing barrel is turned on for cooling and circulating water, and stirred for 25-30 minutes; after the pellet temperature drops to 50°C, the pellets are discharged and stood for more than 24 hours; S5, vulcanization foaming, molding: the vulcanization foaming machine is set to a machine pressure of 150-180kg / C㎡, and a machine temperature of 180-185℃; the pellets are vulcanized in the machine mold for 12-15min, and after cooling and taking out, an ultra-light, highly elastic, and wear-resistant semi-finished sole is obtained; S6, semi-finished soles are left to stand: the semi-finished soles obtained in step S4 are left to stand for more than 24 hours; S7, secondary vulcanization, molding: Use a cloth wheel to remove the surface of both sides of the semi-finished sole, and then perform secondary vulcanization and molding to finalize the shape. After cooling and molding, you can get an ultra-light, highly elastic and wear-resistant sole product.

2. The antibacterial insole and preparation method thereof according to claim 1, characterized in that: The nylon elastomer adopts the new material PEBA-ES, which is a thermoplastic nylon elastomer mixture (TPEA) with nylon 12 elastomer (PEBA) and hydrogenated styrene-butadiene block copolymer (ES) as the main base materials.

3. The antibacterial insole and preparation method thereof according to claim 1, characterized in that: The low-temperature foaming agent is used when the insole is a translucent white insole.

4. The antibacterial insole and preparation method thereof according to claim 1, characterized in that: In the step S1, an internal mixer is used and the temperature of the internal mixer is 80±1°C.

5. The antibacterial insole and preparation method thereof according to claim 1, characterized in that: In the step S1, when the temperature of the internal mixer reaches 100±1°C, active zinc oxide, foaming agent and odorless bridging agent are poured in, and when the temperature of the internal mixer rises to 115±1°C, the mixing tank is opened to stir the materials, and the materials are discharged when the set temperature reaches 120±1°C.

6. The antibacterial insole and preparation method thereof according to claim 1, characterized in that: The pelletizing speed of the pelletizer in step S3 is set as follows: the spindle speed is 40-45 rpm, and the cutter speed is 110-25 rpm.

7. The antibacterial insole and preparation method thereof according to claim 1, characterized in that: During the molding process in step S7, the mold temperature is 175±5° C. and the holding time is 450 seconds, so that the sole is fully vulcanized again.

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