JP4983572B2 - Method for producing hard coat film or sheet, and method for producing hard coat film or sheet with functional inorganic thin film - Google Patents

Description

  The present invention relates to a plastic film or sheet that is adhered to an optical member such as various displays, lenses, mirrors, goggles, and window glass for the purpose of protection, and in particular, a plastic film imparted with scratch resistance and scratch resistance. About.

  Conventionally, a transparent plastic film having scratch resistance and scratch resistance may be attached to an optical member such as a liquid crystal display device, a CRT display device, and other commercial displays, lenses, mirrors, window glass, and goggles. Many. In general, techniques for hardening the plastic surface include coating a thermosetting resin such as organosiloxane and melamine, forming a metal thin film by vacuum deposition or sputtering, or polyfunctional acrylate. The active energy ray curable resin is coated. In recent years, among such methods, an active energy ray-curable resin that is easily processed in a large area and excellent in productivity is often employed. However, in any of these methods, the hardness of the pencil on the plastic film or the sheet substrate is within the range where the adhesion between the hard coat / substrate, the crack at the time of film folding, the curl of the film, etc. are not practically problematic. In many cases, the limit is 2H to 3H, and there is a demand of 4H or more.

  The present invention solves the problems of the prior art, and the problem is that even when a plastic film or sheet is used as a support for forming a hard coat, the adhesion between the hard coat / base material, It is an object to provide a hard coat film or sheet having a pencil hardness value of 4H or more, which can fall within a practically acceptable range of cracks during film bending, film curl, etc. .

In order to achieve the above-mentioned object in the present invention, first, in the invention of claim 1, it is provided on at least one surface of a transparent plastic film or sheet substrate. A method for producing a hard coat film or sheet comprising a first hard coat layer and a second hard coat layer in this order from the substrate side, comprising a polyfunctional acrylate resin or polyfunctional urethane acrylate resin and an inorganic or organic substance Applying the paint containing the internal cross-linked fine particles to the transparent plastic film or sheet substrate, and forming the first hard coat layer by irradiating the applied paint with ultraviolet rays or an electron beam ; Applying a paint containing a polyfunctional acrylate resin or a polyfunctional urethane acrylate resin and not containing inorganic or organic internal cross-linked fine particles onto the first hard coat layer; and to paint was irradiated with ultraviolet light or an electron beam including a step of forming a second hard coat layer It is obtained by a hard coat film or sheet producing method according to claim.

In the invention of claim 2, the paint used for producing the first hard coat layer and the paint used for forming the second hard coat layer are the same polyfunctional acrylate resin or The method for producing a hard coat film or sheet according to claim 1, comprising a polyfunctional urethane acrylate resin .

Moreover, in invention of Claim 3, the 1st hard-coat layer formed by the process of irradiating the said coating material with an ultraviolet-ray or an electron beam and forming the said 1st hard-coat layer is a semi-hardened state, In addition, the first hard coat layer is completely cured by the step of irradiating the coated paint with ultraviolet rays or electron beams to form the second hard coat layer, and the film thickness of the first hard coat layer. 3. The method for producing a hard coat film or sheet according to claim 1, wherein the thickness of the second hard coat layer is from 1.0 μm to 20 μm. It is what.

According to the invention of claim 4, a hard comprising a first hard coat layer, a second hard coat layer, and a functional inorganic thin film in this order from at least one surface of a transparent plastic film or sheet base material in that order. A method for producing a coated film or sheet, wherein a coating material containing a polyfunctional acrylate resin or a polyfunctional urethane acrylate resin and inorganic or organic internally crosslinked fine particles is applied to the transparent plastic film or sheet substrate A step of forming a first hard coat layer by irradiating the coated paint with ultraviolet rays or an electron beam , a polyfunctional acrylate resin or a polyfunctional urethane acrylate resin , Apply a paint that does not contain organic internal cross-linked fine particles onto the first hard coat layer. A step with respect to the applied paint and step by irradiating ultraviolet rays or electron beam to form the second hard coating layer, to include a step of forming a functional inorganic film on the second hard coat layer This is a method for producing a hard coat film or sheet with a functional inorganic thin film.

In the invention of claim 5, the paint used for producing the first hard coat layer and the paint used for producing the second hard coat layer are the same polyfunctional acrylate resin or 5. The method for producing a hard coat film or sheet with a functional inorganic thin film according to claim 4, comprising a polyfunctional urethane acrylate resin .

In the invention of claim 6, the first hard coat layer formed by the step of irradiating the coated paint with ultraviolet rays or electron beams to form the first hard coat layer is in a semi-cured state, In addition, the first hard coat layer is completely cured by the step of irradiating the coated paint with ultraviolet rays or electron beams to form the second hard coat layer, and the film thickness of the first hard coat layer. The hard coat film with a functional inorganic thin film according to claim 4 or 5, wherein the thickness of the second hard coat layer is 1.0 μm or more and 20 μm or less. Or it is set as the manufacturing method of a sheet | seat.

Since this invention is the above structure, there exist the following effects.
That is, by providing a hard coat layer having a curing shrinkage relaxation function by blending internal cross-linked fine particles between layers of a hard coat made of a film or sheet base material and a clear cured resin, the layer configuration is a two-layer hard coat film, A hard coat film or sheet that can accommodate hard coat / substrate adhesion, cracks during film folding, curl of the film, etc. within a practically acceptable range and realizes a pencil hardness value of 4H or more. Can be provided.

  Furthermore, the hard coat of the present invention can be used for an optical film having an antireflection function excellent in surface hardness.

  Therefore, the present invention exhibits excellent practical effects in applications such as adhesive films for protecting various displays such as liquid crystal display devices, optical members such as lenses and mirrors.

Hereinafter, embodiments of the present invention will be described in detail.
As shown in FIG. 1, the hard coat film or sheet of the present invention is a hard coat film or sheet (1) provided with a cured resin coating layer (50) on at least one surface of a transparent plastic film or sheet substrate (10). And a hardened resin layer containing inorganic or organic internally crosslinked ultrafine particles (40) as the first hard coat layer (20) is provided on the substrate (10), and then the second hard coat layer. (30) is a cured resin coating layer (50) provided with a thin film of clear cured resin that does not contain inorganic or organic internal crosslinked ultrafine particles (40), and this cured resin coating layer (50) is characterized. It is a thing.

  Here, first, the constituent material of the hard coat film or sheet (1) will be described, and then the manufacturing method will be described.

  The transparent plastic film or sheet substrate (10) used in the present invention is not particularly limited, and can be appropriately selected from known transparent plastic films or sheets. Specific examples include polyester, polyethylene, polypropylene, cellophane, triacetyl cellulose, diacetyl cellulose, acetyl cellulose butyrate, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, ethylene vinyl alcohol, polystyrene, polycarbonate, polymethylpentene, polysulfone. , Polyether ether ketone, acrylic, nylon, fluorine resin, polyimide, polyether imide, polyether sulfone, and the like. In the present invention, particularly triacetyl cellulose film and uniaxially stretched polyester are used. In addition to being excellent in transparency, it is preferable in that there is no optical anisotropy.

  In addition, it is particularly preferable to use an active energy ray (ultraviolet ray or electron beam) curable resin for the cured resin coating layer (50) because of its high processing speed and low heat damage to the support. Examples of such ultraviolet curable resins are synthesized from polyfunctional acrylate resins such as acrylic acid or methacrylic acid ester of polyhydric alcohol, diisocyanate, polyhydric alcohol and hydroxyalkyl ester of acrylic acid or methacrylic acid. Such polyfunctional urethane acrylate resins can be mentioned. Furthermore, polyether resins having an acrylate functional group, polyester resins, epoxy resins, alkyd resins, spiroacetal resins, polybutadiene resins, polythiol polyene resins and the like can be suitably used as necessary.

  Reactive diluents for these resins include 1,6-hexanediol di (meth) acrylate, tripropylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, hexanediol (meta ) Bifunctional or higher monomers and oligomers such as acrylate, pentaerythritol tri (meth) acrylate, trimethylolpropane tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, neopentyl glycol di (meth) acrylate, and monofunctional monomers For example, acrylic esters such as N-vinylpyrrolidone, ethyl acrylate, propyl acrylate, ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, butyl methacrylate , Hexyl methacrylate, isooctyl methacrylate, 2-hydroxyethyl methacrylate, cyclohexyl methacrylate, methacrylic acid esters such as nonylphenyl methacrylate, tetrahydrofurfuryl methacrylate, and derivatives thereof such as caprolactone derivatives thereof, styrene, α-methylstyrene, Acrylic acid and the like and mixtures thereof can be used.

  In the present invention, when the active energy ray is ultraviolet light, it is necessary to add a photosensitizer (radical polymerization initiator), such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzyl methyl. Benzoins such as ketals and their alkyl ethers; acetophenones such as acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 1-hydroxycyclohexylphenylketone; anthraquinones such as methylanthraquinone, 2-ethylanthraquinone, 2-amylanthraquinone Thioxanthones such as thioxanthone, 2,4-diethylthioxanthone, 2,4-diisopropylthioxanthone; acetophenone dimethyl ketal, benzyl dimethyl ketal, etc. Tars; benzophenone, 4,4-bis benzophenones such as methylamino benzophenone and azo compounds, and the like. These can be used alone or as a mixture of two or more thereof, and further, tertiary amines such as triethanolamine and methyldiethanolamine; benzoic acid derivatives such as 2-dimethylaminoethylbenzoic acid and ethyl 4-dimethylaminobenzoate, etc. It can be used in combination with a photoinitiator aid or the like. The usage-amount of an organic peroxide or a photoinitiator is 0.5-20 weight part with respect to 100 weight part of polymeric components of the said resin composition, Preferably it is 1-15 weight part.

  The inorganic or organic internally crosslinked ultrafine particles (40) contained in the first hard coat layer (20) of the present invention can be arbitrarily used as long as they are fine particles that retain good transparency in the active energy ray-curable resin. Can do.

  The inorganic fine particles generally include fine particles made of silica, alumina, titania, zirconia, etc., but silica particles, particularly synthetic silica particles, are preferable from the viewpoint of transparency. Conductive transparent fine particles such as tin oxide, indium oxide, cadmium oxide, and antimony oxide can also be used as needed regardless of the addition of antistatic properties.

  Further, as the organic fine particles, hard fine particles that have an appropriate cross-linked structure inside the particles and are less likely to swell due to an active energy ray curable resin, a monomer, a solvent, or the like can be used. For example, particle internal cross-linking type styrene resin, styrene-acrylic copolymer resin, acrylic resin, divinylbenzene resin, silicone resin, urethane resin, melamine resin, styrene-isoprene resin, benzoguanamine resin, the above resins, etc. The microgel etc. which have as a main component can be used.

  Moreover, a well-known general coating additive can be mix | blended as needed. For example, silicone-based and fluorine-based additives that impart leveling, surface slip properties, etc. are effective in preventing scratches on the surface of the cured film, and when using ultraviolet rays as active energy rays, the additive air Bleeding to the interface can reduce the inhibition of curing of the resin by oxygen, and an effective degree of curing can be obtained even under low irradiation intensity conditions. Appropriate amounts of these additives are 0.01 to 0.5 parts by weight per 100 parts by weight of the active energy ray-curable resin.

  Although the main constituent materials that can be used in the present invention have been described above, a method for producing a hard coat film or sheet (1) for forming an inorganic thin film will be specifically described. The coating method of the first hard coat layer (20) and the second hard coat layer (30) is arbitrary, but in the production stage, it is generally a roll coater, reverse roll coater, gravure coater, knife coater, bar coater, etc. Is. When ultraviolet rays are used as the active energy ray source, light sources such as high pressure mercury lamp, low pressure mercury lamp, ultra high pressure mercury lamp, metal halide lamp, carbon arc, xenon arc can be used. A metal halide lamp is generally used when a filler is included or a thick film is cured. In the case of curing using an electron beam, it is emitted from various electron beam accelerators such as a Cockloftwald type, a bandecraft type, a resonant transformation type, an insulating core transformer type, a linear type, a dynamitron type, and a high frequency type. An electron beam having an energy of ˜1000 Kev, preferably 100 to 300 Kev can be used.

  The first hard coat layer (20) constituting the hard coat film or sheet (1) of the present invention comprises a curable resin containing inorganic or organic internal crosslinked ultrafine particles (40) as a coating component, and after curing this After coating so that the film thickness is 3.0 μm or more and preferably 30 μm or less, it is completely cured or semi-cured (half-cured) by irradiation with active energy rays. However, semi-cured refers to a crosslinked coating at a stage where the physical properties (hardness, scratch resistance, etc.) of the coating are not completely saturated, but at least the coating cured to the extent that there is no tack on the surface of the coating Means the state. The inorganic or organic internal crosslinked ultrafine particles (40) are blended by a known mechanical forced dispersion method such as a disper mixer or a sand mill, if necessary. Next, after applying the second hard coat layer (30) made of a clear cured resin on the first hard coat layer (20) so that the film thickness after curing is about 1.0 μm to 20 μm, the active energy is applied. It is cured by applying line irradiation. In this case, if the first hard coat layer (20) is already completely cured, only the second hard coat layer (30) is cured, and the first hard coat layer (20) is in a semi-cured state. In this case, the first hard coat layer (20) and the second hard coat layer (30) are simultaneously cured. Preferably, the first hard coat layer (20) is semi-cured to improve the adhesion between the first and second hard coat layers in many cases.

  As the use of the hard coat film or sheet of the present invention as described above, specifically, various display devices such as liquid crystal display devices, CRT display devices, plasma display devices, electrochromic display devices, light emitting diode display devices, EL display devices, etc. It is suitable for screen protection. Further, the hard coat film or sheet of the present invention is mainly composed of an inorganic material having various functions such as an infrared absorption effect, an infrared reflection effect, an electromagnetic wave shielding effect, an antistatic effect, an ultraviolet absorption effect, an antireflection effect, and a reflection enhancement effect. It can be used for the purpose of providing a functional thin film constituted on the surface.

  EXAMPLES Next, although an Example and a comparative example demonstrate this invention concretely, this invention is not limited to these Examples. Parts and% are based on weight unless otherwise specified.

<Example 1>
[Formation of the first hard coat layer (20)]
An ultraviolet curable coating composition containing colloidal silica (average particle size: 10 to 20 nm) as the internally crosslinked fine particles (40) was prepared as a first hard coat resin liquid according to the following formulation.
・ Ditrimethylolpropane tetraacrylate 40 parts ・ Pentaerythritol triacrylate 20 parts ・ Darocur 1173 (manufactured by Ciba Geigy) 3 parts ・ Colloidal silica MEK-ST
(Average particle size: 10-20 nm, manufactured by Nissan Chemical Co., Ltd.) 140 parts 2-butanone 60 parts

Next, after applying the ultraviolet curable coating composition obtained above on one side of a 150 μm thick polyester film with a wire bar and evaporating the solvent, a coating layer having a thickness of 6.1 μm is formed. The first hard coat layer (20) was produced by irradiating ultraviolet rays from a high-pressure mercury UV lamp (120 W / cm) from the coating film side under conditions of an integrated light quantity of about 120 mJ / m ² and curing.

[Formation of the second hard coat layer (30)]
An ultraviolet curable clear coating composition represented by the following formulation containing no internal cross-linked fine particles (40) was prepared as a second hard coat resin liquid.
・ Ditrimethylolpropane tetraacrylate 40 parts ・ Pentaerythritol triacrylate 20 parts ・ Darocur 1173 (manufactured by Ciba Geigy) 3 parts ・ 2-butanone 60 parts

Next, a coating layer having a film thickness of about 5.2 μm after heat-drying the second hard coat layer (30) having the above composition is formed on the first hard coat layer (20) cured in the above-described manner. The substrate (1), the first hard coat layer (20) and the first hard coat layer are irradiated by irradiating ultraviolet rays from a high-pressure mercury UV lamp (120 W / cm) from the film side under a condition of an integrated light quantity of about 300 mJ / m ² , A hard coat film (1) comprising 3 layers of 2 hard coat layers (30) was obtained.

[Formation of functional inorganic thin film layer]
Next, as a specific example of the functional inorganic thin film layer, a conductive antireflection layer was formed on the hard coat layer, that is, the cured resin coating layer (50) by the following configuration and method. First, indium tin oxide (ITO) was formed as a high refractive index layer by a sputtering method, and an antireflection layer made of silicon oxide was formed as a high refractive index layer by a plasma assisted deposition method. The refractive index n, shape film thickness d, and optical film thickness nd of each layer are
・ PET film (n = 1.62)
Hard coat layer (n = 1.52 d = about 5 μm)
First layer: ITO (n _H = 2.05 d = about 58 nm)
Second layer: SiO ₂ (n _L = 1.46 d = about 38 nm)
-Third layer: ITO (n _H = 2.05 d = about 125 nm)
Fourth layer: SiO ₂ (n _L = 1.46 d = about 140 nm)
It was. However, _{n H} is a high refractive index, _{n L} denotes a low refractive index. The optical film thickness was monitored by an optical film thickness monitor, and when the target light quantity value was reached, the film formation was stopped and a predetermined optical film thickness was obtained. The reflectance was 1% or less in the wavelength range of 430 to 680 nm. Adhesion between the cured resin coating layer (50) and the conductive antireflection layer was good.

<Example 2>
Instead of the colloidal silica used in the first hard coat formulation of Example 1, crosslinked acrylic fine particles were used as the internally crosslinked fine particles (40), and a first hard coat resin liquid was prepared according to the following formulation. The crosslinked acrylic fine particles were dispersed in the coating solution using a homogenizer. The coating composition of the second hard coat, the ultraviolet curing conditions of the first and second hard coat layers, the formation method and conditions of the functional inorganic thin film layer, and the like were the same as in Example 1. The film thicknesses of the first hard coat layer (20) and the second hard coat layer (30) were 6.4 μm and 5.0 μm, respectively.
・ Ditrimethylolpropane tetraacrylate 40 parts ・ Pentaerythritol triacrylate 20 parts ・ Darocur 1173 (Ciba Geigy) 3 parts ・ Crosslinked acrylic particles MR-2G
(Average particle size: 0.9 μm, manufactured by Soken Chemical Co., Ltd.) 40 parts ・ 2-butanone 400 parts

<Comparative example 1>
The first hard coat formulation described in Example 1 was not blended with colloidal silica as the internally crosslinked fine particles (40), and the composition was composed only of the clear resin. The coating composition of the second hard coat, the ultraviolet curing conditions of the first hard coat layer (20) and the second hard coat layer (30), the formation method and conditions of the functional inorganic thin film layer, and the like were the same as in Example 1. . The film thicknesses of the first hard coat layer (20) and the second hard coat layer (30) were 6.0 μm and 5.2 μm, respectively.

<Comparative example 2>
The first hard coat layer (20) described in Example 1 was not provided, and only the second hard coat layer (30) was provided with a film thickness of 11.2 μm. The ultraviolet curing conditions of the second hard coat layer (30), the formation method and conditions of the functional inorganic thin film layer, and the like were the same as in Example 1.

<Comparative Example 3>
The second hard coat layer (30) described in Example 1 was not provided, and only the first hard coat layer (20) was provided with a film thickness of 12.3 μm. The ultraviolet curing conditions of the first hard coat layer (20), the formation method and conditions of the functional inorganic thin film layer were the same as those in Example 1.

  About the hard coat film obtained by the said Example and comparative example, and the hard coat film with an electroconductive antireflection function, the mechanical physical property was measured with the following measuring method, and the result evaluated was shown in Table 1 and Table 2, respectively. It was.

〔Evaluation methods〕
"Pencil hardness": Using a pencil having a different hardness, the presence or absence of scratches in the test method shown in JIS K5400 was determined under a 1 kg load.
"Scratch resistance": The surface of the hard coat film was rubbed 10 times with a # 0000 steel wool while applying a load of 400 g, the presence or absence of scratches and the degree of scratches were visually observed, and the following criteria Evaluated according to.
A: No scratches are observed.
B: Several thin scratches are observed.
C: Innumerable scratches are observed.
"Adhesiveness": 100 pieces of 1 mm x 1 mm cross hatch (mesh) are put on the surface of the cured coating layer with a cutter, and after attaching cello tape (registered trademark) (manufactured by Nichiban), the cello tape (registered) Evaluation was made by measuring the number of squares from which the cured coating was peeled off from the film substrate when the trademark was peeled off.
“Curl”: A hard coat film and a specimen of a hard coat film with a conductive antireflection function were cut into 10 cm squares, and the curvature radius was calculated by measuring warpage and dimensions.
“Crack”: The presence or absence of cracks was visually determined when the hard coat film and the hard coat film with a conductive antireflection function were wound around a metal roll having a diameter of 3 cm.

  Table 3 summarizes the film thicknesses of the hard coat films or sheets (1) of the examples and comparative examples, and the elastic moduli calculated below.

[Elastic modulus of hard coat layer (cured resin coating layer (50))]
The elastic modulus (Ef) of the hard coat layer was calculated using the following internal stress formula. The elastic modulus (Es) of the polyester film and the elastic modulus (Ec) of the composite film composed of the polyester film / hard coat layer were determined from the initial slope of the stress-strain curve using a tensile strength tester. However, since a crack easily occurs in the hard coat layer, a stress-strain curve below the fracture strain at which the crack occurs is used.
σc (b + d) = σfd + σsb
Ec (b + d) = Efd + Esb
∴Ef = (Ec (b + d) −Esb) / d
σc: internal stress of the entire composite film σf: internal stress of the hard coat layer σs: internal stress of the polyester film Ec: elastic modulus of the entire composite film Ef: elastic modulus of the hard coat layer Es: elastic modulus of the polyester film
b: thickness of the polyester film
d: Hard coat layer thickness

  From the table above, on the first hard coat layer (20) containing the internally cross-linked fine particles (40) shown in Examples 1 and 2, the second hard coat layer (30) of clear cured resin not containing the fine particles is provided. With the provided layer structure, the pencil hardness was 4H, and adhesion, scratch resistance, curl, crack, etc. were satisfied practically without any problem, and the balance between hardness and other physical properties was good. Further, as a specific example of the functional inorganic thin film on the hard coat, even when a conductive antireflection layer was provided, there was almost no change in performance, and good mechanical properties were achieved.

  Further, since Comparative Example 1 has a film thickness of 10 μm or more, a pencil hardness of 4H can be realized, but since there is no effect of reducing the cure shrinkage of the internally crosslinked fine particles, the curl is large, reflecting a high elastic modulus and a large cure shrinkage. As a result, adhesion decreased and cracks also occurred.

  Further, Comparative Example 2 is sufficiently satisfied with the pencil hardness of 4H as in Comparative Example 1, but the curl is large, the adhesion is reduced reflecting high elastic modulus and large curing shrinkage, and more cracks than Comparative Example 1 are observed. Occurred on the membrane.

  In contrast to Comparative Examples 1 and 2, Comparative Example 3 satisfies adhesion, scratch resistance, curl, and cracks, but the pencil hardness is lowered to reflect a lower elastic modulus than other examples. And it only met the 3H level.

It is explanatory drawing which represented one Embodiment of the hard coat film or sheet | seat of this invention by the side cross section.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Hard coat film or sheet 10 ... Transparent plastic film or sheet base material 20 ... 1st hard coat layer 30 ... 2nd hard coat layer 40 ... Inorganic or organic internal crosslinked ultrafine particles 50 ... Cured resin Coating layer

Claims (6)

A method for producing a hard coat film or sheet comprising a first hard coat layer and a second hard coat layer in order from the substrate side on at least one surface of a transparent plastic film or sheet substrate,
Applying a paint containing a polyfunctional acrylate resin or a polyfunctional urethane acrylate resin and inorganic or organic internally crosslinked fine particles to the transparent plastic film or sheet substrate;
Irradiating the coated paint with ultraviolet rays or an electron beam to form the first hard coat layer;
Coating the first hard coat layer with a paint containing a polyfunctional acrylate resin or a polyfunctional urethane acrylate resin and not containing inorganic or organic internal cross-linked fine particles;
Irradiating the coated paint with ultraviolet rays or an electron beam to form the second hard coat layer. A method for producing a hard coat film or sheet. The paint used for producing the first hard coat layer and the paint used for forming the second hard coat layer contain the same polyfunctional acrylate resin or polyfunctional urethane acrylate resin . The method for producing a hard coat film or sheet according to claim 1. The first hard coat layer formed by the step of irradiating the coated paint with ultraviolet rays or electron beams to form the first hard coat layer is in a semi-cured state, and
The first hard coat layer is completely cured by the step of irradiating the coated paint with ultraviolet rays or electron beams to form the second hard coat layer, and
3. The film thickness of the first hard coat layer is 3.0 μm or more and 30 μm or less, and the film thickness of the second hard coat layer is 1.0 μm or more and 20 μm or less. A method for producing a hard coat film or sheet. A method for producing a hard coat film or sheet comprising, on at least one surface of a transparent plastic film or sheet base material, a first hard coat layer, a second hard coat layer, and a functional inorganic thin film in order from the base material side. And
Applying a paint containing a polyfunctional acrylate resin or a polyfunctional urethane acrylate resin and inorganic or organic internally crosslinked fine particles to the transparent plastic film or sheet substrate;
Irradiating the coated paint with ultraviolet rays or an electron beam to form the first hard coat layer;
A step of applying a paint containing a polyfunctional acrylate resin or a polyfunctional urethane acrylate resin and not containing inorganic or organic internal cross-linked fine particles onto the first hard coat layer; and Irradiating ultraviolet rays or an electron beam to the second hard coat layer; and
Forming a functional inorganic thin film on the second hard coat layer. A method for producing a hard coat film or sheet with a functional inorganic thin film. The paint used for producing the first hard coat layer and the paint used for producing the second hard coat layer contain the same polyfunctional acrylate resin or polyfunctional urethane acrylate resin . The manufacturing method of the hard coat film or sheet | seat with a functional inorganic thin film of Claim 4 characterized by the above-mentioned. The first hard coat layer formed by the step of irradiating the coated paint with ultraviolet rays or electron beams to form the first hard coat layer is in a semi-cured state, and
The first hard coat layer is completely cured by the step of irradiating the coated paint with ultraviolet rays or electron beams to form the second hard coat layer, and
6. The film thickness of the first hard coat layer is 3.0 to 30 [mu] m, and the film thickness of the second hard coat layer is 1.0 to 20 [mu] m. A method for producing a hard coat film or sheet with a functional inorganic thin film.

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