Sheets or films having antibacterial or antiviral properties and release properties.

Abstract

To provide an antibacterial or antiviral film or sheet which is excellent in unwinding characteristics while having high adhesive force, without the releasable support, even if an adhesive layer is provided on one surface and an antibacterial or antiviral laminate is formed.SOLUTION: A film or a sheet contains a resin (A), an antibacterial agent or an antiviral agent, and silicone oil or silylated polyolefin. The antiviral agent may be at least one kind of a compound selected from the group consisting of an iodide composed of iodine and an element of Group 8 to Group 15 in the fourth period to the sixth period of the periodic table.

Description

【Technical Field】 【0001】 The present invention relates to a sheet or film that can inactivate various attached viruses and bacteria regardless of the presence or absence of an envelope and even in the presence of lipids or proteins, and further has high releasability. 【Background Art】 【0002】 An antiviral adhesive sheet is known in which an adhesive layer is laminated on one side of a layer containing an antiviral agent, and a releasable support is provided on the adherend side of the adhesive layer (see Patent Document 1). 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2022-086791 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 Generally, when increasing the adhesive force of the adhesive sheet, it is common to provide the above-mentioned releasable support. However, when attaching the antiviral adhesive sheet to an article, it is necessary to peel off the releasable support, resulting in poor workability, and there is also a problem that a releasable support is required during the production of the adhesive sheet. 【0005】 An object of the present invention is to provide an antibacterial or antiviral film or sheet that has high adhesive force and excellent unwindability even without the above-mentioned releasable support when an adhesive layer is provided on one side to form an antibacterial or antiviral laminate. 【Means for Solving the Problems】 【0006】 As a result of intensive studies to achieve the above problems, the inventors of the present invention have found that by adding silicone oil or silylated polyolefin to an antibacterial or antiviral film or sheet containing resin (A) and an antibacterial agent or antiviral agent, a film or sheet having high releasability can be obtained while maintaining antibacterial or antiviral activity, and thus the present invention has been completed. 【0007】 That is, the present invention is specified as shown below. [1] The film or sheet of the present invention contains resin (A), an antibacterial agent or antiviral agent, and silicone oil or silylated polyolefin. [2] The antiviral agent used in the present invention is preferably at least one compound selected from the group consisting of iodides composed of iodine and elements of the 4th to 6th periods and groups 8 to 15 of the periodic table. [3] The antibacterial or antiviral laminate of the present invention has the film or sheet described in [1] or [2] provided on a substrate (B). [Effect of the Invention] 【0008】 When the film or sheet of the present invention is made into an antibacterial or antiviral laminate by providing an adhesive layer having high adhesive strength on one of its surfaces, even when it is made into a wound body without providing a release support on the adherend side surface of the adhesive layer, it can maintain antibacterial or antiviral properties on the outer surface. Also, in the above case, the adhesive layer can maintain high adhesive strength and reduce the unwinding tension (unwinding characteristics). Therefore, the film or sheet of the present invention has the effect of being able to maintain antibacterial or antiviral properties, adhere the laminate to an adherend over a long period of time, and significantly improve the sticking workability. [Embodiments for Carrying out the Invention] 【0009】 The film or sheet of the present invention contains resin (A), an antibacterial agent or antiviral agent, and silicone oil or silylated polyolefin. 【0010】 The antibacterial agent used in the present invention is not particularly limited as long as it is a substance that exhibits antibacterial properties, but specific examples include organic antibacterial agents and inorganic antibacterial agents. As organic antimicrobial agents, suitable examples include phthalimide-based antimicrobial agents, sulfamide-based antimicrobial agents, benzimidazole-based antimicrobial agents, or triazole-based antimicrobial agents. More specifically, synthetic organic agents and natural organic agents are mentioned. As synthetic organic agents, examples include imidazole-based agents such as 2-(4-thiazolyl)benzimidazole [TBZ], 2-benzimidazole methyl carbamate [BCM], and 2-methylcarbonylaminobentzimidazole; thiazole-based or isothiazoline-based agents such as 2-(4-thiocyanomethylthio)bentthiazole [TCMTB] and 2-n-octyl-4-isothiazolin-3-one [OIT]; and (RS)-1-p-chlorophenyl-4,4-di Triazole compounds such as methyl-3-(1H-1,2,4-triazole-1-ylmethyl)pentan-3-ol (generic name: tebuconazole), all-rac-1-(biphenyl-4-yloxy)-3,3-dimethyl-1-(1H-1,2,4-triazole-1-yl)butan-2-ol (generic name: vitertanol), phthalimide compounds such as N-(dichlorofluoromethylthio)phthalimide (generic name: fluoroforepet), (N-(dichlorofluoromethylthio)-N' Sulfamide compounds such as N'-dimethyl-N-phenylsulfamide (generic name: dichlorofluanide) and N-(dichlorofluormethylthio)-N',N'-dimethyl-Np-tolylsulfamide (generic name: tolufluanide), and 6-membered ring pyridine compounds such as 2,3,5,6-tetrachloro-4-(methylsulfone)pyridine, bis(pyridine-2-thiol-1-oxide)zinc acid [ZPT], 2-pyridinethiol-1-oxide sodium salt, and 2,2'-dithiobispyridine-1-oxide. Triazines such as hexahydro-1,3,5-tris(2-hydroxyethyl)-S-triazine, aldehydes such as α-bromosinnamaldehyde [BCA] and formalin, phenols such as 2,4,4'-trichloro-2'-hydroxydiphenyl ether [triclosan], 3-methyl-4-isopropylphenol [biozol], 2-isopropyl-5-methylphenol [thymol], carbolic acid, biguanides such as chlorhexidine gluconate [hibiten], 2,4,5,Nitriles such as 6-tetrachloroisophthalonitrile [TPN], organic iodines such as 3-iodo-2-propylbutylcarbamate [IPBC], anilides such as trichlorocarbanilide, disulfides such as tetramethylthiuram disulfide, thiocarbamates such as sodium N-methyldithiocarbamate [carbam], organosilicon quaternary ammonium salts such as octadecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride, quaternary ammonium salts such as benzalkonium chloride and benzethonium chloride, amino acids such as alkyldiaminoglycine hydrochloride, organosarsenic compounds such as 10,10'-oxybisphenoxyarsine (OBPA, vinadin), oxy-8-hydr Examples include organic copper compounds such as roxyquinoline (oxine copper), organic zinc compounds such as zinc pyrithione (ZPT), silver acetate, silver benzoate, silver lactate, silver pyrophosphate, silver citrate, silver behenate, silver diethylcarbamate, silver stearate, silver carboxylate, silver tartrate, silver metasulfonate, silver trifluoroate, alkyl esters of phosphoric acid or phosphite, silver salts of phenyl esters or alkylphenyl esters, organic silver compounds such as silver phosphorus fluoride, silver phthalocyanine, silver ethylenediaminetetraacetate, and silver protein, alcohols such as ethanol and propanol, carboxylic acids such as propionic acid, and esters such as p-hydroxybenzoic acid esters, fatty acid monoglycerides, and sucrose fatty acid esters. 【0011】 Examples of natural organic compounds include hinokitiol, chitin / chitosan compounds, mustard extract compounds, and eucalyptus extract compounds. 【0012】 Examples of inorganic antibacterial agents include cuprous oxide, copper powder, copper thiocyanate, copper carbonate, copper chloride, copper sulfate, zinc oxide, zinc sulfate, nickel sulfate, copper-nickel alloy, zirconium phosphate, silver, and zirconium phosphate or zeolite supported with metals such as copper. 【0013】 Examples of antiviral agents used in the present invention include metals represented by Ag, Cu, Sb, Ir, Ti, Ge, Sn, Tl, Pt, Pd, Bi, Au, Fe, Co, Ni, Zn, or In, or compounds thereof. More specifically, examples include silver (Ag)-based antiviral agents such as Bioside TB-B100 (manufactured by Taisho Technos Co., Ltd.), Novalon IV1000 (manufactured by Toagosei Co., Ltd.), W260 (manufactured by DIC Corporation), Z253 Koukin AP10 (manufactured by Toyo Ink Manufacturing Co., Ltd.), and PCT-NT ANV (manufactured by Dainichi Seika Kogyo Co., Ltd.), as well as zinc (Zn)-based antiviral agents such as 3000D (manufactured by Taisho Technos Co., Ltd.). 【0014】 In particular, it is preferable that the compound be at least one compound selected from the group consisting of monovalent copper compounds and iodides composed of iodine and elements from the 4th to 6th periods and groups 8 to 15 of the periodic table. 【0015】 Examples of monovalent copper compounds include chlorides, acetates, sulfides, iodides, bromides, peroxides, oxides, and thiocyanides. Among these, cuprous chloride, cuprous acetate, cuprous bromide, cuprous iodide, cuprous thiocyanate, cuprous sulfide, or cuprous oxide are preferred examples of monovalent copper compounds. These can be used individually or in combination of two or more. 【0016】 Specific examples of elements from periods 4 to 6 and groups 8 to 15 of the periodic table include Cu, Ag, Sb, Ir, Ge, Sn, Tl, Pt, Pd, Bi, Au, Fe, Co, Ni, Zn, In, and Hg. Specific examples of iodides of these elements include CuI, AgI, SbI3, IrI4, GeI4, GeI2, SnI2, SnI4, TlI, PtI2, PtI4, PdI2, BiI3, AuI, AuI3, FeI2, CoI2, NiI2, ZnI2, HgI, or InI3. These can be used individually or in mixtures of two or more. 【0017】 Among these, CuI, AgI, SnI4, CuCl, CuBr, or CuSCN are preferred due to their excellent storage stability in air. These can be used individually or in mixtures of two or more. More specifically, examples include Kyufitec (manufactured by NBC Mesh Tech Co., Ltd.). 【0018】 In the present invention, the form of the antibacterial or antiviral agent is not particularly limited, but it is preferable to use it as particles. The size of the particles is not particularly limited, but it is preferable to use fine particles with an average particle diameter of 500 μm or less. Considering the manufacturing, handling, and chemical stability of the particles, it is preferable that the particle size be 1 nm or larger. In this specification, the average particle diameter refers to the volume average particle diameter. 【0019】 The amount of antibacterial or antiviral agent contained in the film or sheet is not particularly limited, as long as it is in an amount that can sufficiently exhibit antibacterial or antiviral activity. Considering the balance between the strength, durability, and antibacterial or antiviral activity of the film or sheet, a range of 0.5 to 10.0% by mass is preferred, a range of 0.8 to 5.0% by mass and 1.0 to 2.5% by mass is more preferred, and a range of 1.5 to 2.0% by mass is particularly preferred. 【0020】 The silicone oil used in the present invention is not particularly limited as long as it is an oily resin made of a polymer with a siloxane bond as its main backbone, and the silicone oil also includes modified silicone oils. Specifically, examples of the modified silicone oils include epoxy-modified silicone, amino-modified silicone, carboxy-modified silicone, carbinol-modified silicone, mercapto-modified silicone, phenol-modified silicone, (meth)acrylic-modified silicone, polyether-modified silicone, methylstyryl-modified silicone, alkyl-modified silicone, fluorine-modified silicone, and the like. 【0021】 Among the above silicone oils, polydiorganosiloxanes are preferred, and compounds having a siloxane structure given by the following formula (1) are preferred. 【0022】 [C1] -(Si(R 1 )(R 2 )-O) n -(1) 【0023】 In equation (1) above, R 1 and R 2 n represents an organic group, preferably a C1-C18 alkyl group, phenyl group, vinyl group, fluoroalkyl group, etc., and n represents an integer of 20 or more, preferably an integer of 200 to 70000. 【0024】 The weight-average molecular weight (Mw) of the above-mentioned silicone oil is not particularly limited, but is preferably in the range of 100,000 to 700,000, and more preferably in the range of 200,000 to 600,000. If the weight-average molecular weight (Mw) is less than 100,000, the polydiorganosiloxane may bleed out easily and may migrate to the adhesive layer during storage of the roll-shaped material. If the weight-average molecular weight (Mw) exceeds 700,000, the dispersibility of the above-mentioned silicone oil in the antibacterial or antiviral layer may deteriorate. 【0025】 Examples of silicone-based release agents used as masterbatches containing such silicone oils include PEarlene®, Micropellets Y19220 (manufactured by Momentive Performance Materials LLC), and BY27-001 (manufactured by Dow Toray Industries, Inc.). Furthermore, silicone oil can be used alone or in a mixture of two or more types. 【0026】 The silylated polyolefin used in the present invention is not particularly limited as long as it is a polyolefin that has been silylated, but it is preferably obtained by the reaction of an organosilicon compound having a structural unit represented by the following formula (2) with a terminal double bond-containing polyolefin containing one or more vinyl groups. 【0027】 [Case 2] -Si(R 3 )HY 1 -(2) 【0028】 In formula (2), R 3represents a hydrogen atom, a halogen atom, a hydrocarbon group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group or a silicon-containing group, and Y 1 is O, S or NR 4 (R 4 represents a hydrogen atom or a hydrocarbon group, and R 3 and Y 1 when there are a plurality of them, they may be the same or different from each other, and the hydrocarbon group, oxygen-containing group, sulfur-containing group, nitrogen-containing group, and silicon-containing group may contain one or more heteroatoms. 【0029】 Among the organosilicon compounds represented by the above formula (2), the organosilicon compounds represented by the following formula (3) are preferred. 【0030】 [Chemical Formula 3] R 3a -(Si(R 3 )H-Y 1 ) m -Z-(Y 2 -Si(R 3b )H) n -R 3c (3) 【0031】 In formula (3), R / / 这里为了保持一致性,将中文注释里的“式(3)”也替换为英文“formula (3)” 3 and Y 1 represent the same as in formula (2) above, R 3b / / 这里为了保持一致性,将中文注释里的“式(2)”也替换为英文“formula (2)” represents a hydrogen atom, a halogen atom, a hydrocarbon group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group or a silicon-containing group, R 3a and R 3c each independently represent a hydrogen atom, a halogen atom, a hydrocarbon group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group or a group represented by formula (4), Y 2 is O, S or NR 5 (R 5 represents a hydrogen atom or a hydrocarbon group), and also R 3 , R 3b , Y 1 and Y 2 when there are a plurality of them, they may be the same or different from each other, m represents any integer from 1 to 20, n represents 0 or any integer from 1 to 20, when n is 1 or more, Z represents a divalent linking group represented by the general formula (5), when n is 0, R3c is a hydrogen atom or a hydrocarbon group, and Z is a divalent linking group represented by general formula (5) or Y 1 and R 3c This represents a direct bond with a hydrocarbon group. Furthermore, hydrocarbon groups, oxygen-containing groups, sulfur-containing groups, nitrogen-containing groups, and silicon-containing groups may contain one or more heteroatoms. 【0032】 [C4] -(O-Si(R 21 )(R 22 )) y -(R 23 )(4) 【0033】 In formula (4), R 21 ~R 23 Each of these independently represents a hydrogen atom, a halogen atom, a hydrocarbon group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group, or a silicon-containing group, and y represents an integer from 1 to 100. Furthermore, the hydrocarbon group, oxygen-containing group, sulfur-containing group, nitrogen-containing group, and silicon-containing group may contain one or more heteroatoms. 【0034】 [5] -Si(R 11 )(R 12 )-(O-Si(R 13 )(R 14 )) l - (5) 【0035】 In formula (5), R 11 ~R 14 Each of these independently represents a hydrogen atom, a halogen atom, a hydrocarbon group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group, or a silicon-containing group, and l represents 0 or an integer from 1 to 500. Furthermore, the hydrocarbon group, oxygen-containing group, sulfur-containing group, nitrogen-containing group, and silicon-containing group may contain one or more heteroatoms. 【0036】 In equation (3) above, R 3 and R 3b However, each preferably independently represents a hydrogen atom, a C1-C4 alkyl group, a C1-C4 alkoxy group, or a phenyl group, R 3a and R 3cHowever, each preferably independently represents a hydrogen atom, a C1-C4 alkyl group, a C1-C4 alkoxy group, a phenyl group, or formula (4), where R 21 ~R 23 Each of these preferably independently represents a hydrogen atom, a C1-C4 alkyl group, a C1-C4 alkoxy group, or a phenyl group, and in the general formula (5) above, R 11 ~R 14 Preferably, each of these independently represents a hydrogen atom, a C1-C4 alkyl group, a C1-C4 alkoxy group, or a phenyl group. 【0037】 Preferably, the portion of the terminal double bond-containing polyolefin containing one or more vinyl groups other than the vinyl groups is a copolymer chain of two or more olefins selected from the group consisting of ethylene monopolymer chains, propylene monopolymer chains, or olefins having 2 to 50 carbon atoms, with a number-average molecular weight of 100 to 500,000. 【0038】 Furthermore, it is preferable that the portion of the terminal double bond-containing polyolefin containing one or more vinyl groups, other than the vinyl groups, is a copolymer chain of two or more olefins selected from the group consisting of ethylene, propylene, butene, vinylnorbornene, cyclic polyenes having two or more double bonds, and linear polyenes having two or more double bonds. 【0039】 The above silylated polyolefin has a ≡Si-CH2-CH2- structure formed by the reaction of the ≡Si-H in the above hydrosilane or hydrosiloxane compound with the vinyl group in the polyolefin having vinyl at the end. When both the constituent unit represented by formula (1) in the above hydrosilane or hydrosiloxane compound and the vinyl group in the polyolefin having vinyl at the end are multiple, a network polymer is formed by the reaction of the ≡Si-H with the vinyl group, which is undesirable. 【0040】 The weight-average molecular weight (Mw) of the silylated polyolefin is not particularly limited, but is preferably in the range of 300 to 300,000, and more preferably in the range of 600 to 60,000. If the weight-average molecular weight (Mw) is less than 300, the silylated polyolefin is more likely to bleed out and may migrate to the adhesive layer during storage of the roll-shaped material. If the weight-average molecular weight (Mw) exceeds 300,000, the dispersibility of the silylated polyolefin in the antibacterial or antiviral layer may deteriorate. 【0041】 Examples of silicone-based release agents used as masterbatches containing such silylated polyolefins include Exfora® (manufactured by Mitsui Chemicals, Inc.), BY27-201C, and BY27-202H (manufactured by Dow Toray Industries, Inc.). Furthermore, polyolefins can be used individually or in combination of two or more types. 【0042】 The content of silicone oil or silylated polyolefin in the film or sheet of the present invention is not particularly limited, but is preferably in the range of 0.1 to 10% by weight, and more preferably in the range of 0.3 to 5% by weight and 0.5 to 3% by weight. If the content is less than 0.1% by weight, the release properties of the film or sheet may decrease, and if the content exceeds 10% by weight, surface roughness may occur on the back layer, impairing the appearance or failing to achieve sufficient transparency required for optical applications. By setting the content within the above range, even when an adhesive layer with strong adhesive properties is provided on one side of the film or sheet of the present invention, and a release support is not provided on the adherend side of the adhesive layer, and the roll is wound to form an antibacterial or antiviral laminate, the antibacterial or antiviral laminate can be unwound from the roll with a small unfolding force. Furthermore, the silicone oil and silylated polyolefin can be used individually or in combination. The total content when both are mixed is the same as described above. 【0043】 Specific examples of the resin (A) in the film or sheet of the present invention include thermoplastic resins, thermosetting resins, radiation-curable resins that harden upon irradiation with electron beams or ultraviolet light, etc., and these can be used individually or in combination of two or more types. 【0044】 Furthermore, considering that the antibacterial or antiviral laminate of the present invention is formed by laminating the film or sheet of the present invention onto a base material (B) such as a nonwoven or woven fabric, a thermoplastic resin is preferred as the resin (A). Specifically, examples of such thermoplastic resins include olefin resins such as polypropylene, polyethylene, and ethylene-propylene random copolymer; aliphatic polyester resins such as polylactic acid, polycaprolactone, and polybutylene succinate; aromatic polyester resins such as polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate; polystyrene resin, acrylic resin, polyamide resin, polycarbonate resin, polyacetate resin, and ABS resin. From the viewpoint of moldability and reduction of manufacturing costs, the resin (A) is preferably an olefin resin or a polyester resin, more preferably an olefin resin, and among these, polyethylene resin and polypropylene resin are even more preferred, and low-density polyethylene resin is even more preferred. 【0045】 The thickness of the film or sheet of the present invention is not particularly limited and can be any thickness as desired. Considering antibacterial or antiviral properties, weather resistance, and scratch resistance, the thickness of the film or sheet of the present invention is preferably in the range of 10 to 100 μm, more preferably in the range of 10 to 60 μm, and even more preferably in the range of 15 to 55 μm. Processing is difficult if the thickness is less than 10 μm. 【0046】 The film or sheet of the present invention may contain, in addition to antibacterial or antiviral agents and silicone oil or silylated polyolefins, any functional substances that do not impair the function of the film or sheet of the present invention. Specific examples of such functional substances include antifungal agents, anti-allergen agents, plasticizers, desiccants, curing agents, anti-skinning agents, planarizing agents, anti-sagging agents, heat-absorbing agents, lubricants, surfactants, surface potential control agents, dispersants, thickeners, viscosity modifiers, stabilizers, drying modifiers, pigments, ultraviolet absorbers, antioxidants, catalysts, anti-reflective materials, and the like. 【0047】 The antibacterial or antiviral laminate of the present invention is formed by laminating the film or sheet of the present invention on a substrate (B). The material constituting the base material (B) is not particularly limited and includes paper, fibers, metal foil, resin, etc., but it is preferable that it can adhere to the above-mentioned film or sheet and the adhesive layer provided as needed. Specifically, resin is preferred as the material constituting the base material (B), and thermoplastic resin is more preferred among them. More specifically, thermoplastic resins include olefin resins such as polypropylene, polyethylene, and ethylene-propylene random copolymer; aliphatic polyester resins such as polylactic acid, polycaprolactone, and polybutylene succinate; polyester resins such as polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate; polystyrene resin, acrylic resin, polyamide resin, polycarbonate resin, polyacetate resin, and ABS resin. 【0048】 Among these, olefin resins are preferred as the resin constituting the base material (B) from the viewpoint of having elongation properties and good chemical resistance. Specifically, examples include low-density polyethylene, linear low-density polyethylene (including ethylene-α-olefin copolymer produced using a metallocene catalyst), high-density polyethylene, polypropylene, propylene-ethylene block copolymer, propylene-ethylene random copolymer, ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), and ethylene-vinyl alcohol copolymer (EVOH). From the viewpoint of having appropriate flexibility and maintaining good permanent deformation, low-density polyethylene and linear low-density polyethylene are preferred as the resin constituting the resin layer (B). 【0049】 Furthermore, the MFR (measured at 190°C and 2.16 kgf in accordance with JIS K 7210) of the resin forming the base material (B) is not particularly limited, but is preferably in the range of 3 to 15 g / 10 min, and more preferably in the range of 4 to 8 g / 10 min or 5 to 7 g / min. This is because if it is less than 3 g / 10 min or greater than 15 g / 10 min, the processability when manufacturing the laminate will be poor. The thickness of the substrate (B) is not particularly limited, but considering handling, cost, and moldability, a range of 5 to 180 μm is preferred, and a range of 10 to 130 μm and 20 to 100 μm is more preferred. 【0050】 The film or sheet or laminate of the present invention may have an adhesive layer provided on one side of the film or sheet, or on the opposite side of the film or sheet of the laminate's substrate (B). 【0051】 The adhesive (adhesive composition) constituting the above adhesive layer is not particularly limited, and examples include acrylic resin adhesives, rubber adhesives, vinyl alkyl ether adhesives, silicone resin adhesives, polyester resin adhesives, polyamide adhesives, urethane resin adhesives, fluorine-based adhesives, epoxy resin adhesives, etc. Among these, acrylic resin adhesives are preferred as the adhesive from the viewpoint of weather resistance. The above adhesives can be used alone or in combination of two or more. The adhesive may be in any form. Specific examples of adhesives include emulsion-type adhesives, solvent-type adhesives, hot-melt adhesives, and active-energy ray-curing adhesives (ultraviolet-curing adhesives, etc.). 【0052】 The thickness of the adhesive layer is not particularly limited, but is preferably in the range of 0.5 to 30 μm, and more preferably in the range of 1 to 20 μm and 2 to 10 μm. In general, the adhesive strength of an adhesive layer is approximately proportional to its thickness, but it is preferable that the adhesive strength is 4.0 (N / 25mm) or higher when the thickness is 5 μm. If the thickness of the adhesive layer is not 5 μm, the "adhesive strength when the thickness is 5 μm" (N / 25mm) can be estimated using the formula "(adhesive strength when the thickness is 5 μm) = 5F / T", where T (μm) is the thickness of the adhesive layer and F (N / 25mm) is the adhesive strength of the adhesive layer. 【0053】 The form of the antibacterial or antiviral laminate of the present invention is not particularly limited, but a form in which a long laminate is formed into a roll is preferred. In particular, when the laminate of the present invention is a roll with an adhesive layer, the adhesive layer will adhere to the antibacterial or antiviral layer on the side opposite to where the adhesive layer is formed. In the present invention, even in such cases, or even when the roll is relatively wide, the roll can be unwound without difficulty. Such a roll can usually be used as an antibacterial or antiviral adhesive tape that can impart antibacterial or antiviral properties to the surface of an article simply by being attached to it. 【0054】 A more specific method for manufacturing the film or sheet of the present invention is shown below. A masterbatch pellet of resin (A) containing a high concentration of antibacterial or antiviral agent is prepared in advance. This masterbatch pellet is mixed with silicone oil or silylated polyolefin and resin (A) pellets in a certain ratio, and then melt-kneaded to produce pellets that will be used as raw materials for the film or sheet of the present invention. Alternatively, the masterbatch pellet can be mixed with silicone oil or silylated polyolefin and resin (A) pellets in a certain ratio, and then melt-kneaded to form a film or sheet without forming pellets. 【0055】 If the antibacterial or antiviral agent is in solid form, it is ground to particles of, for example, nano-order using a jet mill, hammer mill, ball mill, vibratory mill, bead mill, etc. The grinding method is not particularly limited, and both dry and wet grinding methods can be used. 【0056】 The method for producing the masterbatch pellets described above involves first mixing the antibacterial or antiviral agent obtained by grinding with resin (A) pellets. Next, the resulting mixture is subjected to a kneading extruder to uniformly incorporate the antibacterial or antiviral agent into the resin (A) and knead it. After the resulting kneaded material is cooled, it is finely cut using a pelletizer to obtain masterbatch pellets containing a high concentration of the antibacterial or antiviral agent. 【0057】 Next, a masterbatch pellet containing a high concentration of an antibacterial or antiviral agent is mixed with silicone oil or silylated polyolefin and resin (A) pellets in a predetermined ratio. The resulting pellets are melt-kneaded. After that, the melt-kneaded material is formed into pellets in the same manner as before, or, while still in its melt-kneaded state, is formed into layers (film or sheet) using a T-die method, inflation method, calendering method, etc. By doing so, a film or sheet of the present invention can be obtained in which the antibacterial or antiviral agent, silicone oil or silylated polyolefin is uniformly dispersed in resin (A). 【0058】 The method for manufacturing the laminate of the present invention is not particularly limited, but examples include a method of laminating and integrating a resin composition that is the raw material for the film or sheet of the present invention and a resin composition that constitutes a base material (B) by co-extrusion using a known method such as an inflation method or a T-die method; a method of forming the film or sheet of the present invention by the method described above and then laminating it onto the base material (B); and a method of extruding the resin composition that is the raw material for the film or sheet of the present invention onto the base material (B). Alternatively, as a method for providing an adhesive layer on one side of the film or sheet of the present invention, or on the opposite side of the film or sheet of the antibacterial or antiviral laminate of the present invention, examples include a method of extruding the adhesive composition into a film, sheet or laminate; a method of laminating the film or sheet obtained from the adhesive composition; and a manufacturing method in which the adhesive composition is applied by roll coating methods such as reverse coating or gravure coating, spin coating, screen coating, fountain coating, dipping, or spraying. 【0059】 The thickness of the antibacterial or antiviral laminate of the present invention is not particularly limited, but is preferably in the range of 10 to 200 μm, more preferably 20 to 150 μm, and even more preferably 30 to 100 μm. [Examples] 【0060】 The present invention will be described in detail below using examples, but the scope of the present invention is not limited to these examples. [Examples] 【0061】 In the antiviral layer, a melt-kneaded mixture for the antiviral layer was obtained by melt-kneading a masterbatch containing commercially available copper(I) iodide powder (NBC Meshtech, Cufitec®: 10% by mass + low-density polyethylene 1 (Nippon Polyethylene, LC621): 90% by mass) at a ratio of 18% by mass, low-density polyethylene 2 (Nippon Polyethylene, LC621), and 2% by mass of silylated polyolefin (Mitsui Chemicals, Exfora PE3027). 【0062】 Using the T-die method, at a die temperature of 300°C, low-density polyethylene (Nippon Polyethylene, LC621) was extruded onto PE cloth (Hagiwara Industries, FY Cloth) as the base material (B), and the above molten compound was extruded in this order as the antiviral layer to obtain a laminate 1 with a base material (B) of 20 μm and an antiviral layer of 10 μm. [Examples] 【0063】 Laminate 2 was obtained by extrusion lamination in the same manner as in Example 1, except that 5.0% by mass of silylated polyolefin was used. [Examples] 【0064】 Laminate 3 was obtained by extrusion lamination in the same manner as in Example 1, except that 10.0% by mass of silylated polyolefin was used. [Examples] 【0065】 Laminate 4 was obtained by extrusion lamination in the same manner as in the examples, except that 2.0% by mass of SILICONE MASTER450 (manufactured by Koshigaya Chemical Industries, Ltd.) was used instead of silylated polyolefin. 【0066】 [Comparative Example 1] Laminate 5 was obtained by following the same procedure as in Example 1, except that silylated polyolefins were not used. 【0067】 (Method for evaluating antiviral activity) The antiviral activity value was determined by evaluation in accordance with the method specified in ISO 21702. Influenza A virus was used as the virus. The test specimens were left to stand for 2 hours. The evaluation results are summarized in Table 1. 【0068】 (Method for evaluating the peeling force of the antiviral layer) Commercially available heavy-duty cloth adhesive tape (Okamoto Co., Ltd., #111, adhesive strength: 10.8 N / 25 mm) was applied to the antiviral layer of a prepared laminate, stored at 23°C for one day, and then the adhesive tape was peeled off (180° peel, peeling speed 30 m / min), and the peeling force was measured. The results are summarized in Table 1. 【0069】 [Table 1] [Industrial applicability] 【0070】 The film, sheet, or antibacterial or antiviral laminate of the present invention can provide a novel tool (adhesive tape) that can impart more practical antiviral and antibacterial properties. This adhesive tape can impart antiviral and antibacterial properties to various equipment and articles, whether newly installed or existing. Examples of equipment include handrails, door handles, levers and handles of machinery and devices, escalator belts, tables, chairs, wheelchairs, chair armrests, walking aids, walking aid parts, straps, building materials such as windows and floorboards, interior materials such as resin tiles, push buttons, switches, computer keyboards, mice, vehicle interior materials, medical equipment, air conditioners, ventilation fans, vacuum cleaners, and electric fans. Furthermore, like existing adhesive tapes, it can be used for repair and fixing articles, and it is possible to impart antiviral and antibacterial properties to various locations after the fact, along with repair and article fixing.

Claims

[Claim 1] A film or sheet containing resin (A), an antibacterial agent or antiviral agent, and a silylated polyolefin. [Claim 2] The film or sheet according to claim 1, wherein the antiviral agent is at least one compound selected from the group consisting of iodine and iodides composed of elements from the 4th to 6th periods and groups 8 to 15 of the periodic table. [Claim 3] An antibacterial or antiviral laminate in which the film or sheet according to claim 1 or 2 is provided on a substrate (B).

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