Antibacterial sheets and antibacterial thin products

Abstract

To provide an antibacterial sheet and an antibacterial thin product that can make full use of the properties of montmorillonite itself such as detoxification, far-infrared radiation, antibacterial power, disinfecting power and deodorizing power.SOLUTION: The inventive antibacterial sheet is produced by mixing 5-30 pts.wt. of pulverized ore advance clay (R) primarily composed of montmorillonite, pulverized to a particle size of 10-300 nm, with 100 pts.wt. of EVA resin and molding and foaming the mixture.

Description

[Technical field]

[0001] The present invention relates to an antibacterial sheet and antibacterial thin product that contain finely pulverized ore mainly composed of montmorillonite, which has the effect of suppressing the growth of bacteria in air, water, food, the human body, etc., through ion adsorption, far-infrared radiation, etc., when it comes into contact with the air, water, food, the human body, etc., as well as sterilizing and deodorizing effects. [Background technology]

[0002] In a social environment where the aging of society is progressing, many health-related products have appeared in order to lead healthy daily lives. Among them, hygiene is emphasized, and in response to this, many products with antibacterial and deodorizing functions have appeared. The mainstream method of imparting antibacterial properties to products is to occlude and support antibacterial agents in inorganic antibacterial agents such as silver-based inorganic antibacterial agents, inorganic materials that exhibit photocatalytic functions, such as montmorillonite (Patent Documents 1 and 2). Another method is to coat the surface of the product with an antibacterial agent. A similar method of imparting antibacterial properties to sheets is also adopted for production.

[0003] There were no versatile antibacterial sheets or products manufactured by mixing montmorillonite itself as an antibacterial agent into synthetic resins such as ethylene-vinyl acetate copolymer resin (EVA).Also, there were no sheets or other products manufactured by mixing the finely ground mineral Advanced Clay (registered trademark), which contains montmorillonite as the main component, into synthetic resins such as ethylene-vinyl acetate copolymer resin (EVA) as an antibacterial agent.

[0004] That is, when antibacterial montmorillonite particles are conventionally mixed into a resin composition, the particle diameter is several μm to several tens of μm. Therefore, even if montmorillonite is mixed into a sheet resin, the surface area of ​​the particles is also on the order of μm in particle diameter, so the surface area exposed to the outside of the particles is limited and cannot be fully utilized, and the excellent antibacterial properties of the particles are not utilized. In addition, there are problems such as the fact that the montmorillonite is often covered with resin and the antibacterial effect of the montmorillonite cannot be fully obtained. Furthermore, it is difficult to uniformly disperse ores mainly composed of nanometer-sized montmorillonite in a base material, and there is room for utilization by increasing the surface area. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-142832 A [Patent Document 2] Japanese Patent Application Publication No. 1-313533 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made to solve the above problems, and aims to obtain antibacterial sheets and thin products that incorporate finely pulverized ore mainly composed of montmorillonite, which has not existed before because it is difficult to uniformly disperse nanometer-sized montmorillonite-based ore in a base material. In addition, the present invention aims to obtain antibacterial sheets and thin products that can obtain stable quality by using Advanced Clay (registered trademark), which is a finely pulverized clay mineral that exists in large quantities in nature. [Means for solving the problem]

[0007] To achieve the above object, the antibacterial sheet of the present invention comprises: An antibacterial sheet made of synthetic resin and finely ground ore, The synthetic resin is ethylene-vinyl acetate copolymer (EVA), The finely ground ore has the components SiO 2 75.00% by weight, Al 2 O 3 17.00% by weight, Na 2 O 3.20 wt%, K 2 O 0.02 wt%, MgO 4.10 wt%, CaO 0.32 wt%, TiO 0.14 wt%, FeO 0.10 wt%, other components 0.12% by weight, and a naturally occurring inorganic clay mineral having montmorillonite as a main component is pulverized into a powder having a particle size of 10 to 300 nm, Mixing 5 to 30 parts by weight of the finely pulverized ore with 100 parts by weight of the synthetic resin, The foamed sheet is formed by molding the foamed sheet so as to have air bubbles, and the foamed sheet is sliced ​​to expose the finely pulverized ore on the surface of the sheet.

[0008] Synthetic resins have excellent moldability, transparency, weather resistance, and stress crack resistance, and can be selected according to the application. Therefore, when used in antibacterial and deodorizing everyday products, they not only look good and have a hygienic feel, but also make full use of the detoxifying, antibacterial, far-infrared radiation, and other effects of the ultra-fine minerals mixed into them.

[0009] The synthetic resin may be selected taking into consideration the application and processability. Examples of thermoplastic synthetic resins include ABS (acrylonitrile butadiene styrene copolymer), polyamide (PA), polyoxymethylene (POM), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), or polyolefins such as polyethylene (PE), polypropylene (PP) and polyethylene dicyclopentadiene polymer (COC), polymethyl methacrylate (PMMA), polyester, polycarbonate (PC), polyvinyl chloride (PVC), polylactide (PLA), polystyrene (PS), ethylene-vinyl acetate copolymer resin (EVA), or thermoplastic elastomers selected from ethylene-propylene-diene-rubber or styrene / butadiene / styrene block copolymer (SBS) and styrene / ethenebutene / styrene (SEBS) and polyurethane. Examples of thermosetting synthetic resins include crosslinked epoxides, bakelite, crosslinked polyester resins and crosslinked polyurethanes.

[0010] Montmorillonite, collectively known as bentonite (nano clay), is a mineral that has detoxifying properties, antibacterial and germicidal properties that suppress inflammation and pain, removes skin inflammation and toxins, and emits far infrared rays. The finely ground ore in this invention is clay made by ultra-finely pulverizing the mineral that is the main component of montmorillonite. By ultra-finely pulverizing the montmorillonite and dispersing it uniformly within the sheet, it is possible to maximize its effectiveness.

[0011] The method for forming the sheet is not particularly limited, so long as it is a molding method capable of uniformly dispersing the finely pulverized ore, such as injection molding, extrusion molding, blow molding, vacuum molding, compression molding, or the like, which are commonly used for molding synthetic resins.

[0012] In the antibacterial sheet of the present invention, The particle size of the finely pulverized ore is set to 10 to 300 nm, and the amount of the finely pulverized ore is set to 5 to 30 parts by weight per 100 parts by weight of the synthetic resin. is doing.

[0013] The antibacterial sheet of the present invention contains 5 to 30 parts by weight of finely pulverized ore, the main component of which is montmorillonite finely pulverized to 10 to 300 nm, per 100 parts by weight of the synthetic resin, allowing the detoxifying properties and other effects of montmorillonite to be fully exhibited.

[0014] The thickness of the product sheet (hereinafter simply referred to as the sheet) is preferably about 0.5 to 10 mm, which allows the efficacy of Advanced Clay (registered trademark) to be exhibited efficiently and is easy to use.

[0015] The particle size of the finely ground ore mainly composed of montmorillonite is set to 10 to 300 nm because it is difficult to mix uniformly if the particle size is less than 10 nm, and it is difficult to fully exert the effects of montmorillonite, such as its detoxifying properties, if the particle size exceeds 300 nm.

[0016] The reason why the finely pulverized ore is set to 5 to 30 parts by weight per 100 parts by weight of synthetic resin is that if the amount is less than 5 parts by weight, it is difficult to fully exert the effects of the montmorillonite, such as the detoxification effect, and it becomes difficult to mix uniformly. Also, if the amount exceeds 30 parts by weight, it becomes difficult to handle the sheet.

[0017] This invention The antibacterial sheet is characterized by having air bubbles.

[0018] The air bubbles in the antibacterial sheet may be open or closed, and when ventilation or water permeability is required during use of the sheet, the sheet may be foamed to form open cells. The presence of air bubbles can reduce the weight of the sheet, reduce hardening, and make the sheet easier to handle. The method for forming the foamed sheet is not particularly limited as long as it is a molding method capable of producing a foamed product, such as injection molding, extrusion molding, blow molding, vacuum molding, compression molding, etc., which are used in foam molding of ordinary synthetic resins. Note that the sheet may be made breathable by providing through holes in addition to the air bubbles.

[0019] This invention The antibacterial sheet is characterized in that the synthetic resin is ethylene-vinyl acetate copolymer resin (EVA) and the finely pulverized ore is Advanced Clay (registered trademark), which are mixed together, molded, and foamed to remove the surface to expose the finely pulverized ore on the surface.

[0020] Ethylene-vinyl acetate copolymer resin (EVA) has excellent moldability, transparency, weather resistance, and stress crack resistance. Therefore, when EVA is mixed with Advanced Clay (registered trademark) to make a sheet, it has a hygienic feel and is a resin that can fully utilize the effects of the finely ground ore, mainly composed of montmorillonite, such as its antibacterial properties.

[0021] By making a sheet with the Advanced Clay (registered trademark) exposed on all surfaces except the surface, it is possible to effectively utilize the detoxifying properties of montmorillonite, its antibacterial and germicidal properties which suppress inflammation and pain, its far-infrared radiation function, and its ability to adsorb various substances.

[0022] The antibacterial sheet of this invention is used as a processed material to make the following: sheets for futons, sheets for bed covers, sheets for pillow covers, sheets for belly bands, arm bands, calf bands and neck bands, sheets for lap blankets, shoulder bands and knee covers, sheets for loincloths, sheets for eye masks and face masks, sheets for insoles, sheets for bedrock baths, sheets for refrigerators, cupboards, trays, lunch boxes, chests of drawers, toilets, entrances, shoe cabinets, washrooms and closets that mainly use disinfecting, antibacterial and deodorizing properties, sheets for improving blood flow and disinfecting and deodorizing pets, sheets for promoting plant growth and extending the shelf life, sheets for promoting the ripening of fruit and improving the shelf life, sheets for wine, shochu, sake and whiskey bottles, and sheets for water pipes and gas pipes. It is characterized by:

[0023] Examples of thin products processed from sheets include futon sheets, bed covers, pillow covers, belly wraps, arm wraps, calf wraps, neck wraps, lap wraps, shoulder wraps, knee covers, loincloths, eye masks, face masks, sheets to place between the mask and the face, insoles, bedrock bath mats, and mats for pets. Products that use sheets based on their efficacy include products for refrigerators, cupboards, trays, lunch boxes, etc., mainly for disinfection, antibacterial, and deodorization purposes. Other products that mainly use disinfection, antibacterial, and deodorization purposes include products for chests of drawers, toilets, entrances, shoe cabinets, and washroom closets. In addition, there are products that improve blood flow and disinfect and deodorize pets. In addition, there are products that utilize the effects of promoting plant growth and extending the shelf life, and promoting fruit ripening and extending the shelf life. There are products that use the effects of wrapping it around wine, shochu, sake, and whiskey bottles to make them taste mellow, wrapping it around water pipes to make the water mellow and prevent limescale from forming in the bathtub and to keep the water from getting cold, and wrapping it around gas pipes to reduce gas consumption.

[0024] Furthermore, the sheet of the present invention may be used not only as a sheet but also by attaching or laminating it to the surface of a large article or a thick product.

[0025] No matter what kind of product the sheet is made into, the finely ground ore containing montmorillonite as the main component is used, so the antibacterial, germicidal, deodorizing, and far-infrared emitting sheet performance based on detoxification, far-infrared radiation, etc. can be utilized as is. Therefore, the product can obtain the antibacterial and germicidal properties and be used comfortably.

[0026] In this invention, a thermoplastic Finely ground montmorillonite ore with a particle size of 10 to 300 nm is mixed with 5 to 30 parts by weight of the finely ground ore per 100 parts by weight of the synthetic resin, and the mixture is foamed and molded to have an antibacterial property. Thin products are available.

[0027] The antibacterial thin product of the present invention is made by using 5 to 30 parts by weight of finely pulverized ore, the main component of which is montmorillonite finely pulverized to a particle size of 10 to 300 nm, per 100 parts by weight of the thermoplastic resin, thereby obtaining a thin product that can fully utilize the detoxifying effects of montmorillonite.

[0028] The type and mixing ratio of the thermoplastic synthetic resin are the same as those in the case of the sheet, and the particle size and mixing ratio of the finely pulverized ore are also the same as those in the case of the sheet. The thickness of the thin product (hereinafter simply referred to as the product) is preferably about 0.5 to 10 mm, which allows the finely ground ore containing montmorillonite as the main component to exhibit its effectiveness efficiently and is easy to use.

[0029] In this invention, the finely ground ore is called Advance Clay (registered trademark). The present invention is characterized by the above.

[0030] The finely ground ore has the components SiO 2 75.00% by weight, Al 2 O 3 17.00% by weight, Na 2 O 3.20 wt%, K 2 O 0.02 wt%, MgO 4.10 wt%, CaO 0.32 wt%, TiO 0.14 wt%, FeO 0.10 wt%, other components It contains 0.12% by weight and is made by pulverizing naturally occurring inorganic clay minerals, mainly composed of montmorillonite, into powder with particle sizes of 10 to 300 nm. The montmorillonite components are also stable, and the montmorillonite has excellent detoxifying properties, anti-inflammatory and pain-reducing effects, deodorizing properties, antibacterial properties, and far-infrared radiation properties.

[0031] In this invention, The antibacterial thin product is characterized by having air bubbles.

[0032] The air bubbles in the antibacterial product may be open or closed, just like the sheet, and when ventilation or water permeability is required when using the sheet, the sheet may be foamed to form open cells. When ventilation or water permeability is required, air holes may be provided in addition to air bubbles.

[0033] In this invention, the antibacterial sheet is used as a processed material in thin products such as trays, pipe covering materials, entrance mats, bedrock bath mats, pet mats, and other mats, bed covers, pillow covers, stomach wraps, arm wraps, calf wraps, neck wraps, lap wraps, shoulder wraps, knee covers, loincloths, eye masks, face masks, sheets to be placed between the mask and the face, and insoles.

[0034] When a three-dimensional product is formed from a sheet, it can be difficult to use it, so by specially molding it into a shape that suits the product, a product with good usability can be obtained. Effect of the Invention

[0035] In this invention, the antibacterial sheet and the thin sheet are An antibacterial sheet made of synthetic resin and finely ground ore, The synthetic resin is ethylene-vinyl acetate copolymer (EVA), The finely ground ore has the components SiO 2 75.00% by weight, Al 2 O 3 17.00% by weight, Na 2 O 3.20 wt%, K 2 O 0.02 wt%, MgO 4.10 wt%, CaO 0.32 wt%, TiO 0.14 wt%, FeO 0.10 wt%, other components 0.12% by weight, and a naturally occurring inorganic clay mineral having montmorillonite as a main component is pulverized into a powder having a particle size of 10 to 300 nm, Mixing 5 to 30 parts by weight of the finely pulverized ore with 100 parts by weight of the synthetic resin, The foamed sheet is formed by molding to have air bubbles, and the foamed sheet is sliced ​​to expose the finely pulverized ore on the sheet surface, so that the synthetic resin can be selected according to the purpose, with excellent moldability, transparency, weather resistance, and stress crack resistance. Therefore, when used as an antibacterial and deodorizing daily necessities, it has the effect of improving the appearance and giving a hygienic feeling, as well as fully utilizing the effects of the detoxification, antibacterial properties, far-infrared radiation, etc. of the ultra-finely mixed minerals. Furthermore, montmorillonite is collectively called bentonite (nano clay), and has the effects of detoxification, antibacterial and bactericidal properties that suppress inflammation and pain, removal of skin inflammation and toxins, and far-infrared radiation, and can be maximized by being ultra-finely powdered and uniformly dispersed in the sheet. Furthermore, for 100 parts by weight of synthetic resin, The above By mixing 5 to 30 parts by weight of finely ground ore, the detoxifying effect of montmorillonite can be fully exhibited. Furthermore, since the foam sheet is formed by molding to have air bubbles, the weight can be reduced, hardening can be reduced, and it can be easily handled. Furthermore, since the foam sheet is sliced ​​to expose the finely ground ore on the sheet surface, the detoxifying effect of montmorillonite, antibacterial and germicidal properties that suppress inflammation and pain, far-infrared radiation function, and adsorption to various substances can be effectively utilized. The invention of claim 2 has through holes in addition to the air bubbles, which has the effect of improving breathability. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] The present invention will be described in detail below.

[0037] The antibacterial sheet according to this embodiment has: The component is SiO 2 75.00% by weight, Al 2 O 3 17.00% by weight, Na 2 O 3.20 wt%, K 2 Finely ground ore made by grinding naturally occurring inorganic clay minerals, mainly composed of montmorillonite, an antibacterial component, into powder with a particle size of 10 to 300 nm, containing 0.02% by weight of O, 4.10% by weight of MgO, 0.32% by weight of CaO, 0.14% by weight of TiO, 0.10% by weight of FeO, and 0.12% by weight of other components. The mixture is mixed with 5 to 30 parts by weight of EVA resin 100 parts by weight, molded, and heated to foam to produce a material sheet. The material sheet is heated to foam to produce a foamed sheet. The foamed sheet is then sliced ​​to produce a further The finely ground ore is exposed on the sheet surface.

[0038] EVA resin is used because it is non-toxic if ingested, transparent, weather-resistant, stress-crack-resistant, and easy to mold. These properties allow it to be used to produce antibacterial sheets that can be used widely in food-related applications.

[0039] The finely ground oreMontmorillonite, collectively known as bentonite, is ultrafinely pulverized to a particle size of 10 to 300 nm. This allows the detoxifying and far-infrared radiation effects of montmorillonite to be fully achieved in the sheet.

[0040] Montmorillonite (clay) has many elements that have a beneficial effect on beauty and health, and is said to have detoxifying, far-infrared radiation, antibacterial and germicidal properties, deodorizing properties, suppression of inflammation and pain, scar formation and skin regeneration properties.

[0041] The finely ground ore The particle size is set to 10-300 nm because if it is too fine, it will be too costly to refine it and it will be difficult to disperse it uniformly in the resin. Also, if the particle size is 300 nm or more, there is a risk that the bactericidal and antibacterial effects will be weakened.

[0042] The finely ground ore The reason why the amount is set to 5-30 parts by weight per 100 parts by weight of EVA resin is that if the amount is less than 5 parts by weight, the detoxification, antibacterial, germicidal, deodorizing, etc. effects of montmorillonite cannot be fully obtained even in the sheet. Also, the reason why the amount is set to 30 parts by weight or less is to reduce the discomfort when using and to facilitate molding and shape determination.

[0043] As an example of a method for manufacturing a sheet having the above-mentioned configuration, a resin mainly composed of EVA resin is The finely ground ore The material sheet is then pressurized and heated to obtain a foamed sheet. The foamed sheet is then sliced. However, the method for forming sheets and thin products is not limited to this.

[0044] As mentioned above, EVA resin has The finely ground ore By mixing this into the sheet, it is possible to inhibit the growth of bacteria in the atmosphere or on objects that come into contact with the sheet, and to emit far infrared rays.

[0045] (Embodiment 2) Face masks, which are derived from antibacterial sheets, and films or sheets that are placed between the mask and the face, The component is SiO 2 75.00% by weight, Al 2 O 3 17.00% by weight, Na 2 O 3.20 wt%, K 2 O 0.02 wt%, MgO 4.10 wt%, CaO 0.32 wt%, TiO 0.14 wt%, FeO 0.10 wt%, other components 0.12% by weight, finely ground ore made by grinding naturally occurring inorganic clay minerals, mainly composed of montmorillonite, into powder with a particle size of 10 to 300 nm The product was manufactured by mixing 5 to 30 parts by weight of the above with 100 parts by weight of silicone resin and molding. The thickness of this film, material sheet, or product was 0.2 to 0.3 mm. In this way, Advanced Clay (registered trademark), a finely ground ore mainly composed of montmorillonite, was uniformly dispersed in the product.

[0046] The sheet or film of the present invention is intended to promote blood flow by utilizing the far-infrared radiation function, and can be used for bedding sheets, bed covers, pillow covers, belly wraps, arm wraps, calf wraps, neck wraps, lap wraps, shoulder wraps, knee covers, loincloths, eye masks, face masks, sheets to be placed between the mask and the face, insoles, bedrock baths, etc. Applications mainly using the sheet for sterilization, antibacterial properties, and deodorization include refrigerators, cupboards, trays, lunch boxes, etc. Other applications mainly using the sheet for sterilization, antibacterial properties, and deodorization include chests of drawers, toilets, entrances, shoe cabinets, and washroom closets. In addition, it can be used to improve blood flow and sterilize and deodorize pets. It can also promote plant growth and extend the shelf life, and promote fruit ripening and extend the shelf life. It is also thought that wrapping the sheet around water pipes will make the water smoother, and wrapping the sheet around gas pipes will reduce gas consumption.

[0047] The antibacterial sheet according to the above embodiment is made of EVA resin. The finely ground ore Although the above description is based on the example of batch molding and heat / pressure foam molding using a resin, the method is of course not limited to this molding method. Foam products can be manufactured by normal injection molding, extrusion molding, and blow molding. In addition, the type of resin and the molding method for the film are not limited to those described above.

Claims

1. An antibacterial sheet made of synthetic resin and finely ground ore, the synthetic resin is ethylene-vinyl acetate copolymer (EVA); The finely ground ore has the following components: 75.00% by weight of SiO 2 , 17.00% by weight of Al 2 O 3 , 3.20% by weight of Na 2 O, 0.02% by weight of K 2 O, 4.10% by weight of MgO, 0.32% by weight of CaO, 0.14% by weight of TiO, 0.10% by weight of FeO, and other components. 0.12% by weight, and a naturally occurring inorganic clay mineral having montmorillonite as a main component is pulverized into a powder having a particle size of 10 to 300 nm, The antibacterial sheet is characterized in that 5 to 30 parts by weight of the finely pulverized ore is mixed with 100 parts by weight of the synthetic resin, molded to have air bubbles to form a foamed sheet, and then sliced ​​the foamed sheet to expose the finely pulverized ore on the sheet surface.

2. An antibacterial sheet as described in claim 1, further comprising through holes.

3. A thin product having the antibacterial sheet according to claim 1 or claim 2, the product being a sheet for a futon, a sheet for a bed cover, a sheet for a pillow cover, a sheet for a belly band, an arm band, a calf band, etc. Sheets for wrapping around the neck, sheets for lap, shoulder and knee covers, sheets for loincloths, Sheets for face masks, sheets for insoles, sheets for hot stone baths, refrigerators and cupboards ・Trays, lunch boxes, chests of drawers, toilets, entrances, shoe cabinets, washrooms, closet sheets, pets Sheets for improving blood flow, disinfecting and deodorizing, sheets for promoting plant growth and extending shelf life, sheets for promoting fruit ripening Sheets for improving shelf life, sheets for wine, shochu, sake and whiskey bottles, sheets for water pipes and gas Thin products selected from steel pipe sheets.