WO2023048107A1 - Film de revêtement dur - Google Patents

Film de revêtement dur Download PDF

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Publication number
WO2023048107A1
WO2023048107A1 PCT/JP2022/034860 JP2022034860W WO2023048107A1 WO 2023048107 A1 WO2023048107 A1 WO 2023048107A1 JP 2022034860 W JP2022034860 W JP 2022034860W WO 2023048107 A1 WO2023048107 A1 WO 2023048107A1
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Prior art keywords
hard coat
coat layer
film
coat film
properties
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PCT/JP2022/034860
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English (en)
Japanese (ja)
Inventor
俊和 江田
香 泉
尚弘 表
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日本製紙株式会社
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Publication of WO2023048107A1 publication Critical patent/WO2023048107A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives

Definitions

  • the present invention relates to a hard coat film having antibacterial and antiviral properties.
  • antibacterial films such as face shield films, partition films, window films, touch panel films for electronic devices, etc., which may come into direct contact with the surface of human hands, ⁇ It is desired to have antiviral properties.
  • antibacterial hard coat films As described above, various antibacterial hard coat films have been proposed in the past, but recently, there is a demand for not only antibacterial properties but also good antiviral properties.
  • antibacterial and antiviral properties for example, antistatic performance, high hardness, antifog properties, heat shielding properties (that is, heat shielding or heat insulating properties) are required.
  • functional requirements for hard coat films are increasing.
  • an object of the present invention is, firstly, to provide a hard coat film with good antibacterial and antiviral properties, and secondly, to provide a hard coat film with good antibacterial and antiviral properties,
  • An object of the present invention is to provide a hard coat film having an antibacterial property.
  • Third, an object of the present invention is to provide a hard coat film having good antibacterial and antiviral properties and a high hardness.
  • a hard coat film having good antibacterial and antiviral properties and heat shielding properties is provided. to provide.
  • the present invention has been completed based on various findings obtained through intensive studies to solve the above problems. That is, the present invention has the following configurations.
  • a hard coat film comprising a substrate and a hard coat layer containing at least an inorganic metal and an ionizing radiation-curable resin provided on at least one surface of the substrate.
  • At least one layer of a thin film made of a metal or metal oxide is laminated on the surface of the base material opposite to the hard coat layer or between the base material and the hard coat layer.
  • the hard coat film according to any one of the first to seventh inventions.
  • a hard coat film with good antibacterial and antiviral properties it is possible to provide a hard coat film with good antibacterial and antiviral properties. Moreover, according to the present invention, it is possible to provide a hard coat film having good antibacterial and antiviral properties, as well as antistatic properties. In addition, according to the present invention, it is possible to provide a hard coat film having good antibacterial and antiviral properties and high hardness. Moreover, according to the present invention, it is possible to provide a hard coat film having good antibacterial and antiviral properties, as well as antifogging properties. In addition, according to the present invention, it is possible to provide a hard coat film having good antibacterial and antiviral properties, as well as heat shielding properties. Furthermore, according to the present invention, in addition to good antibacterial and antiviral properties, a hard coat film that also has multiple performances such as the above antistatic performance, high hardness, antifogging properties, and heat shielding properties. can provide.
  • the hard coat film of the present invention is described below.
  • the hard coat film of the present invention is a hard coat film characterized by having a hard coat layer containing at least an inorganic metal and an ionizing radiation-curable resin on at least one surface of a substrate. be.
  • the hard coat film of the present invention includes, for example, a face shield film, a partition film, a window film, a table cover film, a bus mirror film, a freezer/refrigerator window film, or a display or touch panel film for electronic devices, etc. can be preferably applied.
  • a face shield film for example, a face shield film, a partition film, a window film, a table cover film, a bus mirror film, a freezer/refrigerator window film, or a display or touch panel film for electronic devices, etc.
  • a display or touch panel film for electronic devices etc.
  • a film substrate is generally used as the substrate to be coated with the hard coat film.
  • the film substrate used in the present invention is not particularly limited, and examples thereof include acrylic resins, triacetyl cellulose, polyethylene terephthalate, cycloolefin polymer, polycarbonate, polyethylene naphthalate, polyethylene, polytrimethylene terephthalate, and polypropylene. , polybutylene terephthalate, polybutylene naphthalate, polystyrene, polymethyl methacrylate, polystyrene glycidyl methacrylate, aromatic polyimide, alicyclic polyimide, polyamideimide and mixtures thereof.
  • polyester films, acrylic films, triacetyl cellulose, polyethylene terephthalate, and polycarbonate are particularly suitable.
  • the film substrate is preferably triacetyl cellulose or polyethylene terephthalate from the viewpoint of transparency and cost advantage, and is a partition film or window film.
  • the film substrate is preferably an acrylic resin film, or polycarbonate or polyethylene terephthalate from the viewpoint of impact resistance and cost advantage. It is also possible for the base material to have UV cut performance.
  • the thickness of the film substrate varies depending on the application, so it cannot be generalized, but it is usually preferably in the range of 10 to 1000 ⁇ m, more preferably in the range of 20 to 300 ⁇ m.
  • any resin that forms a film can be used without particular limitation. It is preferable to use an ionizing radiation-curable resin because it is possible to adjust the degree of cross-linking by adjusting the amount, and it is possible to adjust the surface hardness of the hard coat layer.
  • the ionizing radiation-curable resin used in the present invention is a resin that is cured by irradiation with ultraviolet rays (hereinafter abbreviated as “UV”) or electron beams (hereinafter abbreviated as “EB”), especially Can be cured by UV or EB having 3 or more (meth)acryloyloxy groups in one molecule to form a three-dimensional crosslinked structure in the coating film hardness and hard coat layer, although not limited thereto A polyfunctional acrylate is preferred.
  • UV ultraviolet rays
  • EB electron beams
  • UV or EB curable multifunctional acrylates include urethane acrylate, trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol tri(meth) acrylates, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, dipentaerythritol hexa(meth)acrylate, trimethylolpropane ethoxy triacrylate, glycerin propoxy triacrylate, ditrimethylolpropane tetraacrylate, etc. can be done.
  • the polyfunctional acrylates may not only be used alone, but may also be used in combination of two or more.
  • the ionizing radiation curable resin used in the present invention is preferably a polymer having a weight average molecular weight in the range of 700 to 3600, and the weight average molecular weight divided by the number of functional groups is 50 to 1500. A range is preferred. If the number obtained by dividing the weight-average molecular weight by the number of functional groups is less than 50, the phenomenon (curling) in which the hard coat film warps toward the hard coat layer surface side increases, causing problems in subsequent processing steps and poor processability. . Further, when the number obtained by dividing the weight average molecular weight by the number of functional groups exceeds 1500, the hardness is insufficient, which is not suitable.
  • the ionizing radiation-curable resin used in the present invention has a weight average molecular weight of less than 1,500, it is desirable that the number of functional groups per molecule is 3 or more and less than 10. Further, when the weight average molecular weight of the ionizing radiation-curable resin is 1500 or more, the number of functional groups in one molecule is desirably 3 or more and 20 or less. If it is within the above range, it is possible to suppress curling while suppressing the occurrence of cracks under high temperature conditions, and to maintain appropriate workability. For example, it is suitable for use as a window film.
  • the resins contained in the hard coat layer include thermoplastic resins such as polyethylene, polypropylene, polystyrene, polycarbonate, polyester, acrylic, styrene-acrylic, cellulose, and phenol.
  • Thermosetting resins such as resins, urea resins, unsaturated polyesters, epoxies, silicone resins, etc. may be blended within a range that does not impair the hardness and scratch resistance of the hard coat layer.
  • an inorganic metal in the hard coat layer by including an inorganic metal in the hard coat layer, it is possible to obtain a hard coat film having good antibacterial and antiviral properties (also referred to as “antibacterial and antiviral properties"). It is possible.
  • the inorganic metal used in the present invention is a substance formed by incorporating metal ions such as silver, molybdenum, copper, and zinc into an inorganic compound (inorganic material), or silver, molybdenum, copper, zinc, and the like. is a substance in which a metal ion is supported on an inorganic compound (inorganic material).
  • Specific examples of the inorganic metal used in the present invention include, for example, inorganic compounds such as zeolite, apatite, and zirconia.
  • Inorganic antibacterial/antiviral agents such as antibacterial/antiviral zeolite, antibacterial/antiviral apatite, and antibacterial/antiviral zirconia can be used.
  • a silver-based material containing silver ions is preferable from the viewpoint of being non-toxic to the body and excellent in safety.
  • a phosphate-based glass-silver-supporting compound and a silver zeolite compound are more preferable because even a small amount thereof exhibits antibacterial and antiviral properties, and the addition amount thereof can be suppressed.
  • a silver-molybdenum-based material containing both silver and molybdenum components can also be preferably used in the present invention, since it exhibits good antibacterial and antiviral properties.
  • the inorganic metal in the present invention is preferably an inorganic material containing at least a silver component.
  • the average particle size of the inorganic metal is, for example, preferably in the range of 1 to 30000 nm, more preferably in the range of 2.5 to 20000 nm. If the average particle size is less than 1 nm, the materials are limited and difficult to obtain. On the other hand, if the average particle size exceeds 30,000 nm, the dispersibility in the hard coat paint deteriorates, leaving a grainy feeling when applied.
  • the amount of the inorganic metal added is not particularly limited in the present invention, but is, for example, in the range of 0.05% by mass to 30% by mass based on the solid content in the hard coat layer. If the amount added is less than 0.05% by mass, the antibacterial and antiviral properties are not sufficiently exhibited. On the other hand, if the amount added exceeds 30% by mass, the transparency becomes low, and the visibility is remarkably deteriorated when visibility is required for a face shield, a window film, or the like.
  • the term "solid content in the hard coat layer” refers to "hard coat layer-forming coating solution (hard coat paint) for forming the hard coat layer. solids”. Moreover, solid content is solid content, such as resin and an additive, for example.
  • the above-mentioned silver-based material and silver-molybdenum-based material exhibit good antibacterial and antiviral performance even with a small amount added, so the amount added is , 0.1 mass % to 10 mass %.
  • the above inorganic metals may be used singly or in combination of two or more.
  • the hard coat layer further contains an antistatic agent.
  • an antistatic agent By further adding an antistatic agent to the hard coat layer containing the inorganic metal, it is possible to obtain a hard coat film having a hard coat layer having both good antibacterial/antiviral properties and antistatic performance.
  • antistatic agents is not particularly limited, but for example, conductive fillers such as metallic conductive fillers, non-metallic conductive fillers, carbon-based conductive fillers, and organic antistatic agents.
  • An antistatic agent dispersed in a binder made of an organic compound can be preferably used as needed.
  • a quaternary ammonium salt-based antistatic agent can be preferably used.
  • the amount added is not particularly limited in the present invention, but for example, 1% by mass with respect to the solid content in the hard coat layer. It is in the range of up to 20% by mass. If the amount added is less than 1% by mass, sufficient antistatic performance cannot be obtained. On the other hand, if the amount added exceeds 20% by mass, the strength of the coating film may decrease.
  • the present invention it is possible to further improve the surface hardness (scratch resistance, pencil hardness) by including inorganic fine particles in the hard coat layer. That is, by adding inorganic fine particles to the hard coat layer containing the inorganic metal, it is possible to obtain a hard coat film having good antibacterial and antiviral properties and a high hardness. can.
  • the average particle size of the inorganic fine particles is preferably in the range of 5-200 nm, more preferably in the range of 10-80 nm. If the average particle size is less than 5 nm, it is difficult to obtain sufficient surface hardness. On the other hand, if the average particle size exceeds 200 nm, the gloss and transparency of the hard coat layer are likely to be reduced, and the flexibility may also be reduced.
  • examples of the inorganic fine particles include inorganic oxide fine particles such as silica and alumina.
  • Alumina which is mainly composed of aluminum, has a high hardness, so that an effect can be obtained with a smaller addition amount than silica.
  • the amount of the inorganic fine particles added is not particularly limited in the present invention, it is, for example, in the range of 10% by mass to 60% by mass with respect to the solid content in the hard coat layer. If the amount added is less than 10% by mass, it is difficult to obtain sufficient surface hardness. On the other hand, if the amount added exceeds 60% by mass, the transparency and appearance will be degraded, and visibility will be remarkably deteriorated when visibility is required for face shields, window films, and the like.
  • the hard coat layer may contain an antifogging agent.
  • an antifogging agent By adding an antifogging agent to the hard coat layer containing the inorganic metal, a hard coat film having a hard coat layer having both good antibacterial/antiviral properties and antifogging properties can be obtained.
  • any substance that forms a hydrophilic region can be used without particular restrictions.
  • Surfactants such as cationic surfactants having quaternary ammonium groups, amphoteric surfactants such as long-chain alkylamino acids, nonionic surfactants such as polyoxyethylene nonylphenyl ether, fluorine-based surfactants, , glycosylethyl methacrylate, methacrylic acid, acrylic acid, 2-hydroxylethyl methacrylate, acrylamide, N,N-dimethylacrylamide, N-vinylpyrrolidone, N-(2-methacryloyloxyethyl)-2-pyrrolidone, glyceryl methacrylate, polyethylene Hydrophilic monomers such as glycol methacrylates, hydroxylalkyl (meth)acrylates such as polyethylene glycol acrylate, polyalkylene glycol mono(meth)acrylates, (meth)acrylamides, N-vinyllact
  • a silane coupling agent having an anionic hydrophilic group for example, a sulfonic acid group
  • a hydrophilic monomer and a vinyl group an acrylic group, a methacrylic group, a glycidyl group, an allyl group, an epoxy group
  • a reactive surfactant having a reactive end group such as a mercapto group, cyano group, isocyano group, amino group, etc. and a hydrophilic moiety such as a sulfone group, hydroxyl group, ammonium chloride etc.
  • a hydrophilic moiety such as a sulfone group, hydroxyl group, ammonium chloride etc.
  • the amount of the antifogging agent added is not particularly limited in the present invention, but is, for example, in the range of 10% by mass to 70% by mass based on the solid content in the hard coat layer. If the amount added is less than 10% by mass, sufficient antifogging properties cannot be obtained. On the other hand, if the amount added exceeds 70% by mass, the scratch resistance of the film may decrease.
  • At least one thin film made of metal or metal oxide can be laminated on the surface of the substrate opposite to the hard coat layer or between the substrate and the hard coat layer.
  • the heat shielding effect (heat shielding property) of the hard coat film can be obtained.
  • Specific metals or metal oxides include, for example, aluminum, silver, gold, nickel, cobalt, and stainless steel, and alloys thereof, titanium dioxide, tin oxide, indium oxide, zinc oxide, and tungsten oxide. .
  • the layer (thin film) made of the metal or metal oxide described above for example, a known thin film forming method such as a vacuum vapor deposition method, a sputtering method, or a chemical vapor deposition method (CVD method) can be applied.
  • the thickness of the layer (thin film) made of the metal or metal oxide described above is preferably in the range of 10 to 1000 nm. If the thickness is less than 10 nm, a sufficient heat shielding effect cannot be obtained, and if it exceeds 1000 nm or more, the transparency tends to decrease, and it is not suitable for applications such as window films that require visibility.
  • the hard coat layer-forming coating liquid (hard coat paint) for forming the hard coat layer contains a known photopolymerization initiator.
  • a photopolymerization initiator can include Acetophenones and benzophenones can be used as such a photopolymerization initiator.
  • a leveling agent (surface modifier) can be used for the purpose of improving coatability.
  • known leveling agents can be used.
  • a fluorine-based or siloxane-based antifouling agent (leveling agent, surfactant, etc.) can be added to the hard coat layer.
  • the amount of the antifouling agent to be added is not particularly limited, but is preferably 0.05% by mass to 2.0% by mass based on the resin solid content in the hard coat paint.
  • the hard coat film of the present invention it is suitable, for example, to increase the haze value of the hard coat layer.
  • organic fine particles include fine particles of acryl, melamine-formaldehyde condensate, polyethylene, styrene acryl, polyester, and the like.
  • examples of inorganic fine particles include fine particles of alumina, zinc oxide, silica, titanium oxide, cerium oxide, and the like. can be exemplified.
  • the amount of the fine particles to be added is preferably in the range of 10% by mass to 80% by mass based on the resin solid content in the hard coat paint.
  • ultraviolet absorbers As other additives added to the hard coat layer, ultraviolet absorbers, antifoaming agents, surface tension modifiers, antioxidants, light stabilizers, etc. may be blended as needed.
  • the hard coat layer contains antistatic agents, inorganic fine particles, organic fine particles, antifogging agents, photopolymerization initiators, other additives, etc. in an appropriate solvent.
  • the solvent can be appropriately selected according to the solubility of the resin to be blended, and any solvent that can uniformly dissolve or disperse at least the solid content (resin, other additives described above, etc.) may be used.
  • solvents include aromatic solvents such as toluene, xylene and n-heptane, aliphatic solvents such as cyclohexane, methylcyclohexane and ethylcyclohexane, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate and acetic acid.
  • organic solvents such as ester solvents such as butyl and methyl lactate, ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone, and alcohol solvents such as methanol, ethanol, isopropyl alcohol and n-propyl alcohol alone Alternatively, several types can be appropriately combined and used.
  • the concentration (solid content concentration) of the coating liquid is not particularly limited, but can be, for example, in the range of about 10% by mass to 70% by mass.
  • the irradiation amount of ionizing radiation (UV, EB, etc.) after coating and drying the hard coat layer forming coating solution on the substrate is the irradiation amount necessary to give the hard coat layer sufficient hardness. It may be set appropriately according to the type of the ionizing radiation curable resin.
  • the method of applying the hard coat-forming coating liquid for forming the hard coat layer is not particularly limited, but gravure coating, micro gravure coating, fountain bar coating, slide die coating, slot die coating, Known coating methods such as coating, screen printing, and spray coating can be used.
  • drying temperature and heating time (drying time) in the drying process after coating can be set as appropriate.
  • the coating thickness (after drying) of the hard coat layer varies depending on the application of the hard coat film, so it is not particularly limited, but is generally in the range of, for example, 1.0 ⁇ m to 20.0 ⁇ m. preferred. If the coating thickness is less than 1.0 ⁇ m, it is difficult to obtain the required surface hardness, which is not preferable. On the other hand, when the coating thickness exceeds 20.0 ⁇ m, curling is likely to occur, which is not preferable because the handleability in the manufacturing process is deteriorated.
  • the hard coat film of the present invention has a hard coat layer containing at least an inorganic metal and an ionizing radiation-curable resin on at least one surface of a substrate. ) are listed below. (Embodiment 1)
  • the hard coat layer is provided on both sides of the substrate, and one layer contains the inorganic metal of the present invention and an antistatic agent, and has antibacterial/antiviral properties and antistatic performance.
  • the other is a hard coat layer containing the inorganic metal of the present invention and an antifogging agent in the layer and having antibacterial/antiviral and antifogging properties.
  • the same hard coat layer is provided on both surfaces of the substrate, and one contains the inorganic metal and inorganic fine particles of the present invention in the layer, has antibacterial / antiviral properties, and has high antibacterial and antiviral properties. It is a hard coat layer, and the other is a hard coat layer having the antibacterial/antiviral and antifog properties described above.
  • An embodiment of such a hard coat film is suitable, for example, as a face shield film.
  • a hard coat layer having antibacterial/antiviral properties and antistatic properties is provided on one surface of the substrate.
  • a hard coat layer having the antibacterial/antiviral properties and high hardness is provided on one surface of the base material.
  • a hard coat film is applied to members such as partitions, windows, table covers, and touch panels of electronic devices on the other surface of the substrate (the surface opposite to the surface on which the hard coat layer is provided).
  • An adhesive layer for sticking can be provided.
  • Such a hard coat film is suitable as, for example, a partition film, a window film, a table cover film, or a display or touch panel film for electronic devices.
  • a hard coat layer having antibacterial/antiviral and antifogging properties is provided on one surface of the substrate.
  • an adhesive layer is provided for attaching the hard coat film to members such as windows, bus mirrors, and freezer/refrigerator windows. can be provided.
  • Embodiments of such hard coat films are suitable, for example, as window films, bus mirror films, and freezer-refrigerator window films.
  • a hard coat layer having the above antibacterial/antiviral and antistatic properties is provided on one side of the base material, or one side of the base material has the above antibacterial/antiviral properties. and a hard coat layer having a high hardness is provided.
  • the other surface of the substrate the surface opposite to the surface on which the hard coat layer is provided, or between the substrate and the hard coat layer, a metal or metal oxide At least one thin film can be laminated.
  • Embodiments of such a hard coat film are suitable as, for example, partition films and window films that require a heat shielding effect.
  • a hard coat film having good antibacterial and antiviral properties As described in detail above, according to the present invention, it is possible to provide a hard coat film having good antibacterial and antiviral properties. Moreover, according to the present invention, it is possible to provide a hard coat film having good antibacterial and antiviral properties and antistatic properties. Moreover, according to the present invention, it is possible to provide a hard coat film having good antibacterial and antiviral properties and high hardness. Moreover, according to the present invention, it is possible to provide a hard coat film having good antibacterial and antiviral properties and antifogging properties. Furthermore, it is possible to provide a hard coat film having good antibacterial and antiviral properties and a heat shielding effect.
  • a hard coat film that also has multiple properties among the above-mentioned antistatic performance, high hardness, antifogging properties, heat shielding properties, and the like.
  • Example 1 [Preparation of Coating Solution for Forming Hard Coat Layer] Ionizing radiation curable resin (Shiko UV-7630B (trade name); manufactured by Nippon Synthetic Chemical Co., Ltd.) containing urethane acrylate as a main component and 95 parts of Irgacure 184 (photopolymerization initiator, manufactured by BASF)3. 5 parts, 1.5% (based on solid content 0.5%) of a surface modifier (Megafac R-08MH; manufactured by DIC Corporation), and a silver-molybdenum compound as the inorganic metal of the present invention.
  • Ionizing radiation curable resin Shiko UV-7630B (trade name); manufactured by Nippon Synthetic Chemical Co., Ltd.
  • Irgacure 184 photopolymerization initiator, manufactured by BASF
  • hard coat paint 30% hard coat layer-forming coating liquid
  • a hard coat paint having the above composition was applied to one side of a polyethylene terephthalate (PET) base film (film thickness: 50 ⁇ m) using a bar coater, and then dried in a drying oven at 80° C. for 60 seconds.
  • a hard coat layer having a thickness of 2 ⁇ m after drying was formed.
  • this hard coat layer is cured by UV irradiation with a UV dose of 200 mJ/cm 2 using a UV irradiation device set at a height of 60 mm from the coated surface to prepare the hard coat film of this example. bottom.
  • Example 2 The antibacterial/antiviral agent containing a silver-molybdenum compound in the hard coat paint in Example 1 was replaced with an antibacterial/antiviral agent containing a silver compound (Zeomic HD10N (trade name); manufactured by Sinanen Zeomic Co., Ltd.).
  • Zeomic HD10N trade name
  • a hard coat film of Example 2 was produced using a hard coat paint prepared in the same manner except for changing to .
  • Example 3 [Preparation of paint for hard coating] Ionizing radiation curable resin (Shiko UV-7630B (trade name); manufactured by Nippon Synthetic Chemical Co., Ltd.) containing urethane acrylate as a main component and 95 parts of Irgacure 184 (photopolymerization initiator, manufactured by BASF)3.
  • a hard coat film of Example 3 was produced in the same manner as in Example 1, except that the hard coat paint having the above composition was used and the hard coat layer had a thickness of 4 ⁇ m after drying.
  • Example 4 [Preparation of paint for hard coating] Ionizing radiation curable resin (Shiko UV-7630B (trade name); manufactured by Nippon Synthetic Chemical Co., Ltd.) containing urethane acrylate as a main component and 95 parts of Irgacure 184 (photopolymerization initiator, manufactured by BASF)3.
  • a hard coat film of Example 4 was produced in the same manner as in Example 1, except that the hard coat paint having the above composition was used and the hard coat layer had a thickness of 5 ⁇ m after drying.
  • Example 5 [Preparation of paint for hard coating] An ionizing radiation-curable resin (Aica Itron Z-942-4 (trade name); manufactured by Aica Kogyo Co., Ltd.) containing a fluorine-based surfactant (anti-fogging agent) and having urethane acrylate as a main component was added at 99%. 7%, and 0.3% (0.3% of the solid content) of an antibacterial/antiviral agent containing a silver-molybdenum compound as the inorganic metal of the present invention is blended, and propylene glycol monomethyl ether (PGME) is added. to prepare a hard coat paint having a final solid concentration of 40%.
  • PGME propylene glycol monomethyl ether
  • a hard coat film of Example 5 was produced in the same manner as in Example 1, except that the hard coat coating composition having the above composition was used and the hard coat layer had a thickness of 4 ⁇ m after drying.
  • Example 6 [Preparation of paint for hard coating] Irgacure 184 (photopolymerization initiator, manufactured by BASF Co., Ltd.) containing 90 parts of ionizing radiation curable resin (Shikou UV-7630B (trade name); manufactured by Nippon Synthetic Chemical Co., Ltd.) as the main component and urethane acrylate as the main component3.
  • Irgacure 184 photopolymerization initiator, manufactured by BASF Co., Ltd.
  • ionizing radiation curable resin Shikou UV-7630B (trade name); manufactured by Nippon Synthetic Chemical Co., Ltd.
  • a hard coat film of Example 6 was produced in the same manner as in Example 1, except that the hard coat paint having the above composition was used and the hard coat layer had a thickness of 5 ⁇ m after drying.
  • Example 7 On the opposite side of the hard coat layer on the substrate of the hard coat film of Example 3, an indium oxide/tin compound (ITO) layer was formed by a sputtering apparatus (magnetron sputtering MSP-40T (trade name); manufactured by Vacuum Device Co., Ltd. ), a hard coat film of Example 7 was prepared by coating to a thickness of 600 nm.
  • ITO indium oxide/tin compound
  • Example 8 An indium oxide/tin compound (ITO) layer was formed on one side of a polyethylene terephthalate (PET) substrate film (film thickness: 50 ⁇ m) using a sputtering device (magnetron sputtering MSP-40T (trade name); manufactured by Vacuum Device Co., Ltd.). was applied to a thickness of 600 nm. A hard coat layer having a thickness of 4 ⁇ m after drying was formed thereon by using the same hard coat paint as in Example 3, and a hard coat film of Example 8 was produced.
  • a sputtering device magnetictron sputtering MSP-40T (trade name); manufactured by Vacuum Device Co., Ltd.
  • Comparative example 1 Using a hard coat paint prepared in the same manner as in Example 1 except that the antibacterial/antiviral agent containing a silver-molybdenum compound in the hard coat paint in Example 1 was not contained (omitted), A hard coat film of Comparative Example 1 was produced.
  • ⁇ Thickness of coating film> The formed thickness of the coating film of the hard coat layer was measured using Thin-Film Analyzer F20 (trade name) (manufactured by FILMETRICS).
  • Antibacterial properties It was measured by a method according to the JIS Z 2801:2010 standard. An antibacterial activity value of 2.0 or more was determined to be effective as an antibacterial activity value.
  • Antiviral properties It was measured by a method according to the standard of ISO 21702:2019. An antiviral activity value of 2.0 or more was determined to be effective as an antiviral activity value.
  • ⁇ Total light transmittance> Each hard coat film was measured using a haze meter HM-150N manufactured by Murakami Color Research Laboratory. The measurement was performed based on the JIS-K7361 standard. As for the evaluation criteria, a light transmittance of 88% or more was considered acceptable.
  • ⁇ Surface resistance> The surface resistance values of the hard coat films produced in Examples 3, 7 and 8 were measured using Hiresta-UX MCP-HT800 manufactured by Nitto Seiko Analytic Co., Ltd. A USR probe was used for the measurement, and the applied voltage was 500V. As for the evaluation criteria, a surface resistance value of less than 1.0 ⁇ 10 11 ⁇ / ⁇ was considered acceptable. 10 11 ⁇ / ⁇ is the level at which dust does not adhere due to static electricity.
  • ⁇ Pencil hardness> For each hard coat film produced in Examples and Comparative Examples, pencil hardness was measured by a test method according to JIS-K-5600-5-4. The hardness without scratches on the surface is indicated. As for the judgment criteria, a hardness of 2H or more was regarded as acceptable.
  • the heat shielding property of the hard coat film was evaluated by the "shielding coefficient".
  • the shielding coefficient was measured according to JIS A 5759. If the shielding coefficient is less than 1.0, it has heat shielding properties (heat shielding effect).
  • Example 3 in which the hard coat layer contains an antistatic agent, a hard coat film having both good antibacterial and antiviral properties and antistatic performance is obtained.
  • Example 4 in which the hard coat layer contains inorganic fine particles, a hard coat film having good antibacterial and antiviral properties and high hardness can be obtained.
  • Example 5 in which the hard coat layer contains an antifogging agent, a hard coat film having good antibacterial and antiviral properties and antifogging properties is obtained.
  • Example 6 a hard coat film having good antibacterial and antiviral properties and high haze is obtained.
  • Examples 7 and 8 hard coat films having good antibacterial and antiviral properties and heat shielding effects are obtained.

Landscapes

  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un film de revêtement dur présentant des propriétés antibactériennes et des propriétés antivirales satisfaisantes.　Le film de revêtement dur selon la présente invention est conçu de telle sorte qu'une couche de revêtement dur contenant au moins un métal inorganique et une résine durcissable par rayonnement ionisant est disposée sur au moins une surface d'un matériau de base. Le métal inorganique est, par exemple, un matériau inorganique contenant au moins un constituant à base d'argent. La quantité de métal inorganique à ajouter est, par exemple, comprise entre 0,05 % en masse et 30 % en masse par rapport à la teneur en solides dans la couche de revêtement dur.
PCT/JP2022/034860 2021-09-21 2022-09-19 Film de revêtement dur WO2023048107A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021066874A (ja) * 2019-10-23 2021-04-30 アイカ工業株式会社 光硬化性樹脂組成物及びハードコートフィルム
WO2021251329A1 (fr) * 2020-06-09 2021-12-16 日本製紙株式会社 Feuille antivirale

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021066874A (ja) * 2019-10-23 2021-04-30 アイカ工業株式会社 光硬化性樹脂組成物及びハードコートフィルム
WO2021251329A1 (fr) * 2020-06-09 2021-12-16 日本製紙株式会社 Feuille antivirale
WO2021251328A1 (fr) * 2020-06-09 2021-12-16 日本製紙株式会社 Feuille antivirale comprenant des fibres de cellulose

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