JP7314954B2 - Resin molding and screen - Google Patents

Description

The present invention relates to resin moldings and screens.

2. Description of the Related Art Conventionally, there has been used a screen that displays image light projected from a projector so that an observer on the opposite side of the projector can view it as an image.
For example, Patent Literature 1 and Patent Literature 2 disclose a transparent screen containing a thermoplastic resin and inorganic fine particles.

JP 2017-198807 A JP 2018-091990 A

As described in Patent Documents 1 and 2, etc., transparent screens are known, but have been found to be inferior in color reproducibility of projected images. In addition, naturally, the transparent screen is required to have a high transmitted light intensity.
An object of the present invention is to solve such problems, and to provide a resin molded product having high transmitted light intensity and excellent color reproducibility of a projected image, and a screen using the same.

Based on the above-mentioned problems, the present inventors conducted studies and found that the above-mentioned problems can be solved by setting the difference between the spectral transmittance of light at a wavelength of 700 nm and the spectral transmittance of light at a wavelength of 500 nm to 0.50 to 1.80% and the total light transmittance to 80.0 to 92.0 in a resin molded body containing a thermoplastic resin and inorganic fine particles.
Specifically, the above problems have been solved by the following means.
<1> A resin molding containing a thermoplastic resin and inorganic fine particles, wherein the resin molding has a spectral transmittance difference of 0.50 to 1.80% for light with a wavelength of 700 nm and a spectral transmittance for light with a wavelength of 500 nm when measured with a CIE standard D65 light source and a 10° field of view, and a total light transmittance of 80.0 to 92.0% when measured with a CIE standard D65 light source and a 10° field of view. body.
<2> The resin molding according to <1>, wherein the thermoplastic resin is a polycarbonate resin.
<3> The resin molding according to <1>, wherein the thermoplastic resin is a thermoplastic polyester resin.
<4> The resin molding according to <3>, wherein the diol component constituting the thermoplastic polyester resin contains at least 1,4-cyclohexanedimethanol.
<5> The resin molding according to any one of <1> to <4>, wherein the inorganic fine particles have a tap density of 0.60 to 1.35 g/mL.
<6> The resin molding according to any one of <1> to <5>, wherein the inorganic fine particles are oxides containing titanium.
<7> The resin molded article according to any one of <1> to <6>, which contains 0.0005 to 0.5 parts by mass of the inorganic fine particles with respect to 100 parts by mass of the thermoplastic resin.
<8> The resin molded article according to any one of <1> to <7>, wherein the resin molded article is in the form of a film or a sheet.
<9> The resin molding according to <8>, wherein the resin molding has a thickness of 30 to 3000 μm.
<10> The resin molding according to any one of <1> to <9>, wherein the resin molding further contains at least one antioxidant consisting of a phosphorus antioxidant and a phenolic antioxidant, and the total amount of the antioxidant is 0.005 to 0.4 parts by mass with respect to 100 parts by mass of the thermoplastic resin.
<11> The resin molded product according to any one of <1> to <10>, wherein the resin molded product further contains an ultraviolet absorber in a proportion of 0.005 to 3.0 parts by mass with respect to 100 parts by mass of the thermoplastic resin.
<12> The resin molding according to any one of <1> to <11>, wherein the total light transmittance is 89.5% or less.
<13> A screen comprising the resin molding according to any one of <1> to <12>.
<14> The screen according to <13>, having an adhesive layer on at least one side of the screen.
<15> The screen according to <14>, wherein the adhesive layer contains an acrylic adhesive.
<16> The screen according to <14> or <15>, wherein the adhesive layer contains a silicone adhesive.
<17> The screen according to any one of <14> to <16>, wherein the adhesive layer contains a urethane adhesive.

INDUSTRIAL APPLICABILITY According to the present invention, it has become possible to provide a resin molding having high transmitted light intensity and excellent color reproducibility of a projected image, and a screen using the same.

FIG. 2 is a front view showing an example of a measuring device for measuring the transmitted light intensity (%) when measuring the resin molding in a 10° field of view. FIG. 3 is a plan view showing an example of a measuring device for measuring the transmitted light intensity (%) when measuring the resin molding in a 10° field of view.

The contents of the present invention will be described in detail below. In this specification, the term "~" is used to mean that the numerical values before and after it are included as the lower limit and the upper limit.

The resin molded product of the present invention is a resin molded product containing a thermoplastic resin and inorganic fine particles, wherein the resin molded product has a spectral transmittance difference of 0.50 to 1.80% between the spectral transmittance of light with a wavelength of 700 nm and the spectral transmittance of light with a wavelength of 500 nm when measured with a CIE (Commission International de l'Eclairage) standard D65 light source and a 10° field of view, and the total light transmittance of the resin molded product when measured with a CIE standard D65 light source and a 10° field of view is 80. It is characterized by being 0 to 92.0%. With such a configuration, a resin molding having high transmitted light intensity and excellent color reproducibility of a projected image can be obtained.
Conventionally, in a resin molded body containing a thermoplastic resin and inorganic fine particles, it has been believed that the closer the difference between the spectral transmittance of light with a wavelength of 700 nm and the spectral transmittance of light with a wavelength of 500 nm is to 0%, the better the color reproducibility of the projected image. However, as a result of investigation by the present inventor, it was found that the above problem can be solved by adjusting the difference in spectral transmittance (|T ₇₀₀ −T ₅₀₀ |) to 0.50 to 1.80%. Furthermore, the inventors have found that a high transmitted light intensity can be achieved by making the value of the difference in spectral transmittance (|T ₇₀₀ −T ₅₀₀ |) slightly larger than 0%, and have completed the present invention.
The value of the spectral transmittance difference (|T ₇₀₀ −T ₅₀₀ |) and the total light transmittance can be adjusted by the thickness of the resin molding, the particle size and aspect ratio of the inorganic fine particles, the particle size distribution (e.g., coefficient of variation), the particle concentration, the particle shape (spherical, block-like, needle-like, etc.), and the like.

<Spectral transmittance>
In the resin molded product of the present invention, the difference between the spectral transmittance of light with a wavelength of 700 nm and the spectral transmittance of light with a wavelength of 500 nm (|T ₇₀₀ −T ₅₀₀ |) is 0.50 to 1.80%, preferably 0.70% or more, more preferably 0.90% or more, and even more preferably 1.00% or more, when measured with a D65 light source and a 10° field of view. The upper limit of the spectral transmittance difference (|T ₇₀₀ −T ₅₀₀ |) is preferably 1.70% or less, more preferably 1.60% or less, and even more preferably 1.50% or less. By setting |T ₇₀₀ −T ₅₀₀ | to 0.50% or more, it is possible to make the red color of the projected image less likely to be emphasized, and the transmitted light intensity tends to be improved. In addition, by making it 1.80% or less, it is possible to make it difficult for the blue color of the projected image to be emphasized.

The resin molded product of the present invention preferably has a spectral transmittance (T ₇₀₀ ) (%) of 80.0% or more, more preferably 82.0% or more, and even more preferably 84.0% or more at a wavelength of 700 nm under a D65 light source and a 10° field of view. By setting it as such a range, the molded object with more excellent transparency is obtained. The upper limit of the spectral transmittance ( _T700 ) (%) is preferably 94.0% or less, more preferably 93.0% or less, and even more preferably 92.0% or less. By setting the content in such a range, a molded article exhibiting better transmitted light intensity can be obtained.
The resin molded product of the present invention preferably has a spectral transmittance (T ₅₀₀ ) (%) of 79.0% or more, more preferably 81.0% or more, and even more preferably 83.0% or more at a wavelength of 500 nm under a D65 light source and a 10° field of view. By setting it as such a range, the molded object which is excellent in transparency and has less yellowness can be obtained. The upper limit of the spectral transmittance (T ₅₀₀ ) (%) is preferably 93.0% or less, more preferably 92.0% or less, even more preferably 91.0% or less. By setting the content in such a range, a molded article exhibiting better transmitted light intensity can be obtained. The spectral transmittance is measured according to the method described in Examples below.

<Total light transmittance>
The resin molded product of the present invention has a total light transmittance of 80.0 to 92.0%, preferably 82.0% or more, more preferably 84.0% or more, further preferably 85.0% or more, when measured with a CIE standard D65 light source and a 10° visual field. The upper limit of the total light transmittance is preferably 91.5% or less, more preferably 91.0% or less, and may be 89.5%. If the total light transmittance is less than 80.0%, the transparency of the resin molding is lost, and the visibility of the background is deteriorated.
The total light transmittance is measured according to the method described in Examples below.

<Haze>
The haze of the resin molding of the present invention is preferably 15% or less, more preferably 12% or less, and may be 9% or less. The lower limit of the haze of the resin molding of the present invention is ideally 0%, but even if it is, for example, 1% or more, 3% or more, or 5% or more, the required performance is satisfied.
In particular, when the thickness of the resin molding is 100 μm or more (preferably 100 μm to 3 mm), the haze is preferably 10% or less.
Also, when the thickness of the resin molding is less than 100 μm (preferably 30 μm to less than 100 μm), the haze is preferably 12% or less.

<Transmitted light intensity>
The transmitted light intensity is the value of the intensity of the transmitted light transmitted through the planar sample, which is measured when the incident light is irradiated toward the intersection of the plane sample and the perpendicular along the incident axis inclined by 10° with respect to the perpendicular line perpendicular to the plane sample placed at the reference position (hereinafter referred to as the reference position).
More specifically, as described above, when incident light of constant intensity is incident on the intersection (the intersection of the virtual perpendicular and the surface of the planar sample of the resin molded body), it is a virtual plane that includes the perpendicular, is a virtual plane that is perpendicular to the planar sample placed at the reference position, and is also perpendicular to the plane that includes the perpendicular and the axis of incidence (hereinafter referred to as a vertical plane).

More specifically, as shown in FIG. 1, incident light is applied to the light-receiving surface of the resin molded body from a direction inclined 10° in the Z-axis direction from the normal (X-axis in FIG. 1) to the light-receiving surface (film surface) of the resin molded body. In FIG. 1, 1 is an optical axis detouring device for measuring transmitted light distribution, 2 is a light source section, 3 is a detouring section, 4 is a sample table, 5 is a light receiving arm, and 6 is a light receiving section. In the present invention, as described above, when the incident light is not incident perpendicularly to the light receiving surface of the resin molding (in the X-axis direction in FIG. 1), and the incident light is incident from a direction inclined in the Z-axis direction with respect to the normal to the light receiving surface, the optical axis of the incident light and the virtual vertical plane including the plurality of observation points are tilted. This makes it possible to suppress the intensity of the transmitted light to a certain level, facilitating measurement of the value of the intensity of the transmitted light.

Moreover, FIG. 2 is the figure which looked at FIG. 1 from above. Here, the light receiving section 6 has a rotatable structure. Moreover, the sample stage 4 may also be rotatable. In the present invention, as described above, the light-receiving part can be moved to observation points at various angles with respect to a line (axis X) perpendicular to the light-receiving surface (film surface) of the resin molded body and a line (axis Y) on the light-receiving surface perpendicular to axis X. For example, in the optical axis detouring device 1 for measuring the transmitted light distribution illustrated in FIG. 2, the light receiving section can be rotated from +90° to −90° in the Y-axis direction from the X-axis direction, so the light-receiving section 6 can be easily moved to an arbitrary angular position with respect to the normal to the light-receiving surface of the resin molded body (the axis inclined by 90° from the rotation axis), and thus the value of the transmitted light intensity at an arbitrary angle can be measured.
Note that the intensity of the incident light and the magnitude of the distance from the intersection to the observation point do not change the value of the relative transmitted light intensity of the transmitted light, so they can be set as appropriate.
More specifically, the intensity of transmitted light is measured according to the method described in Examples below.
In the present invention, the value of the transmitted light intensity _I45 at the position of 45° is used as an index when the value of the transmitted light intensity at the position of 0° with respect to the normal of the plane sample is taken as 100%. It should be noted that the 45° rotational position may be a rotational position on either the + side or the - side.
The value of this transmitted light intensity _I45 indicates the brightness of the projected image when used for screen applications, and the higher the value, the brighter the image projected onto the screen.

The resin molding of the present invention preferably has a transmitted light intensity _I45 of 5% or more, more preferably 8% or more, even more preferably 9% or more, and may be 10% or more. Although the upper limit of the transmitted light intensity _I45 of the resin molding of the present invention is not particularly defined, for example, even if it is 40% or less, 35% or less, 32% or less, or 25% or less, the required performance is satisfied.
In particular, when the thickness of the resin molding is 100 μm or more (preferably 100 μm to 3 mm), the transmitted light intensity I ₄₅ is preferably 8% or more, more preferably 10% or more.
When the thickness of the resin molding is less than 100 μm (preferably 30 μm to less than 100 μm), the transmitted light intensity I ₄₅ is preferably 10% or more, more preferably 13% or more, and may be 25% or more.

<Thickness of resin molding>
The resin molding of the present invention is usually in the form of a film or a sheet, and the lower limit of the thickness is preferably 30 μm or more, more preferably 40 μm or more, further preferably 50 μm or more, even more preferably 60 μm or more, and may be 900 μm or more. The upper limit of the thickness is preferably 3 mm (3000 μm) or less, more preferably 2 mm (2000 μm) or less, even more preferably 1.5 mm (1500 μm) or less, and even more preferably 1.2 mm (1200 μm) or less.
Moreover, the thickness of the resin molding does not need to be uniform, and the molding may have different thicknesses depending on the application.

<Thermoplastic resin (A)>
The resin molding of the present invention contains a thermoplastic resin. Examples of thermoplastic resins include polycarbonate resins, thermoplastic polyester resins (polyethylene terephthalate resin, polyethylene naphthalate resin, etc.), polymethyl methacrylate resins, polypropylene resins, cycloolefin polymer resins, cellulose acetate propionate resins, polyvinyl butyral resins, and polystyrene resins. Polycarbonate resins and thermoplastic polyester resins are preferred, and polycarbonate resins are more preferred. The thermoplastic polyester resin is preferably polyethylene terephthalate resin.

The polycarbonate resin is not particularly limited as long as it contains --[OR--OCO]--units (R is an aliphatic group, an aromatic group, or both an aliphatic group and an aromatic group, and further has a linear or branched structure) containing a carbonate bond in the molecular main chain. However, from the viewpoint of impact resistance and heat resistance, the stability as an aromatic dihydroxy compound, and the fact that it contains a small amount of impurities but is easily available, aromatic polycarbonate resins are more preferable. Examples of aromatic polycarbonate resins include those having a bisphenol A skeleton.

Specific types of polycarbonate resins are not limited, but examples thereof include polycarbonate polymers obtained by reacting a dihydroxy compound with a carbonate precursor. At this time, in addition to the dihydroxy compound and the carbonate precursor, a polyhydroxy compound or the like may be reacted. A method of reacting carbon dioxide as a carbonate precursor with a cyclic ether may also be used. Moreover, the polycarbonate polymer may be a homopolymer consisting of one kind of repeating unit, or a copolymer having two or more kinds of repeating units. At this time, the copolymer can be selected from various copolymerization forms such as random copolymers and block copolymers.

The method for producing the polycarbonate resin is not particularly limited, and any method can be adopted. Examples thereof include an interfacial polymerization method, a melt transesterification method, a pyridine method, a ring-opening polymerization method of a cyclic carbonate compound, a solid-phase transesterification method of a prepolymer, and the like.

また、上述の熱可塑性ポリエステル樹脂としては、芳香族ポリエステル樹脂が好ましい。また、熱可塑性ポリエステル樹脂を構成するジオール成分として、１，４－シクロヘキサンジメタノールを含むポリエステル樹脂が好ましい。熱可塑性ポリエステル樹脂としては、例えば、ＰＥＴ（ポリエチレンテレフタレート）、ＰＥＴＧ（シクロヘキサンジメタノールによりグリコール変性されたポリエチレンテレフタレート、エチレングリコールのモル比率がシクロヘキサンジメタノールより高い）およびＰＣＴＧ（シクロヘキサンジメタノールによりグリコール変性されたポリエチレンテレフタレート、シクロヘキサンジメタノールのモル比率がエチレングリコールより高い）等が使用される。シクロヘキサンジメタノールは、１，４－シクロヘキサンジメタノールであることが好ましい。The molecular weight of the polycarbonate resin is preferably 10,000 to 35,000, more preferably 10,500 or more, more preferably 11,000 or more, still more preferably 11,500 or more, still more preferably 12,000 or more, as a viscosity average molecular weight converted from the solution viscosity measured at a temperature of 25 ° C. using methylene chloride as a solvent. Also, it is preferably 32,000 or less, more preferably 29,000 or less. By setting the viscosity-average molecular weight to the lower limit value or more of the above range, the mechanical strength of the resin molding of the present invention can be further improved, and by setting the viscosity-average molecular weight to the upper limit value or less of the above range, it is possible to suppress a decrease in fluidity of the resin, improve moldability, and facilitate thin-wall molding.
Two or more kinds of polycarbonate resins having different viscosity-average molecular weights may be mixed and used. In this case, polycarbonate resins having viscosity-average molecular weights outside the preferred range may be mixed.
The viscosity average molecular weight [Mv] means a value calculated from Schnell's viscosity formula, that is, η = 1.23 × 10 ^-4 Mv ^0.83 , using methylene chloride as a solvent and determining the intrinsic viscosity [η] (unit: dl/g) at a temperature of 25°C using an Ubbelohde viscometer. In addition, the intrinsic viscosity [η] is a value calculated from the following formula by measuring the specific viscosity [η _sp ] at each solution concentration [C] (g/dl).

In addition, aromatic polyester resins are preferable as the above thermoplastic polyester resins. Moreover, a polyester resin containing 1,4-cyclohexanedimethanol as a diol component constituting the thermoplastic polyester resin is preferable. As the thermoplastic polyester resin, for example, PET (polyethylene terephthalate), PETG (polyethylene terephthalate modified with cyclohexanedimethanol with a higher molar ratio of ethylene glycol than with cyclohexanedimethanol) and PCTG (polyethylene terephthalate modified with cyclohexanedimethanol with a higher molar ratio of cyclohexanedimethanol than with ethylene glycol), and the like are used. Cyclohexanedimethanol is preferably 1,4-cyclohexanedimethanol.

The resin molding of the present invention preferably contains 90% by mass or more, more preferably 95% by mass or more, and even more preferably 97% by mass or more of a thermoplastic resin based on the resin molding.
One embodiment of the resin molded product of the present invention is a form in which the polycarbonate resin is contained in an amount of 90% by mass or more, preferably 95% by mass or more, more preferably 97% by mass or more.
Another embodiment of the resin molded product of the present invention is a form in which the thermoplastic polyester resin (preferably, polyethylene terephthalate resin) is contained in an amount of 90% by mass or more, preferably 95% by mass or more, and more preferably 97% by mass or more.

The resin molding of the present invention may contain only one type of thermoplastic resin, or may contain two or more types thereof. When two or more types are included, the total amount is preferably within the above range.

The thermoplastic resin used for the resin molding of the present invention may be not only a virgin raw material but also a thermoplastic resin recycled from used products.
However, the content of the recycled thermoplastic resin is preferably 80% by mass or less, more preferably 50% by mass or less, of the thermoplastic resin. Since recycled thermoplastic resins are highly likely to have undergone deterioration such as thermal deterioration and aging, if such thermoplastic resins are used more than the above range, the hue and mechanical properties may be reduced.

<Inorganic fine particles (B)>
The resin molding of the present invention contains inorganic fine particles. By including inorganic fine particles, desired optical properties can be achieved. In particular, the value of the difference in total light transmittance and spectral transmittance (|T ₇₀₀ −T ₅₀₀ |) in the resin molded article of the present invention can be adjusted by the particle size and aspect ratio of the inorganic fine particles, the particle size distribution (e.g., coefficient of variation), particle concentration, particle shape (spherical, block-like, needle-like, etc.), refractive index, and the like.

The inorganic fine particles preferably have a number average particle diameter of 70 nm or more, more preferably 100 nm or more, even more preferably 150 nm or more, and even more preferably 180 nm or more. By making it equal to or higher than the above lower limit, it is possible to more effectively suppress the phenomenon in which the resin molding exhibits a bluish tinge when projected by a projector. The upper limit of the number average particle diameter of the inorganic fine particles is preferably 520 nm or less, more preferably 450 nm or less, and may be 400 nm or less, 380 nm or less, or 350 nm or less. By setting the content to be equal to or less than the above upper limit, it is possible to effectively suppress the phenomenon that the resin molding exhibits a reddish tinge when projected by a projector. That is, there is a relationship between the wavelength of light and the particle size in the scattering of light by the inorganic fine particles, and the highest light scattering efficiency is exhibited when the wavelength of light and the particle size are approximately the same. Therefore, the larger the particle size, the easier it is for light with longer wavelengths to scatter, and the more diffusely transmitted light tends to be reddish. However, the present invention does not exclude the case where the conditions other than the inorganic fine particles are appropriately adjusted so as to satisfy the desired optical properties. The number average particle size is measured by the method described in Examples below.
The coefficient of variation of the number average particle size of the inorganic fine particles is preferably 100% or less, more preferably 90% or less, and may be 80% or less. By reducing the coefficient of variation in this way, it becomes easier to adjust the value of the difference in total light transmittance and spectral transmittance (|T ₇₀₀ −T ₅₀₀ |) within a desired range. Ideally, the lower limit of the variation coefficient is 0%, but it may be, for example, 20% or more, or even 30% or more. The coefficient of variation is measured by the method described in Examples below.
The aspect ratio of the inorganic fine particles is preferably 1.1 or more, more preferably 1.2 or more, and preferably 2.0 or less, more preferably 1.9 or less. The aspect ratio is measured according to the method described in Examples below. Such an aspect ratio makes it easier to adjust the value of the difference in total light transmittance or spectral transmittance (|T ₇₀₀ −T ₅₀₀ |) within a desired range.
The tap density of the inorganic fine particles is preferably 0.60 g/mL or higher, more preferably 0.70 g/mL or higher, even more preferably 0.80 g/mL or higher, and even more preferably 0.90 g/mL or higher. The upper limit of the tap density is preferably 1.35 g/mL or less, more preferably 1.30 g/mL or less, and may be 1.25 g/mL or less, 1.20 g/mL or less, or 1.15 g/mL or less. Such a tap density makes it easier to adjust the value of the difference in total light transmittance or spectral transmittance (|T ₇₀₀ −T ₅₀₀ |) within a desired range. The tap density of the inorganic fine particles is measured by the method described in Examples below.

The inorganic fine particles are preferably oxides and complex oxides of at least one element selected from the group consisting of Bi, Nd, Si, Al, Zr, Ba, and Ti, and mixtures of two or more of these. The inorganic fine particles more preferably contain at least one selected from Bi, Si, Zr, Ba, and Ti, and more preferably contain at least Ti. The inorganic fine particles are preferably oxides containing titanium, composite oxides, and mixtures of two or more of these, and more preferably oxides containing at least titanium.
In one embodiment of the inorganic fine particles used in the present invention, inorganic fine particles containing titanium (preferably titanium oxide and/or barium titanate) account for 90% by mass or more, preferably 95% by mass or more, and more preferably 99% by mass or more of the inorganic fine particles. With such a configuration, it is possible to achieve both transparency and screen light projection performance.

Crystal forms of titanium oxide include a rutile type and an anatase type, and the rutile type is preferable from the viewpoint of thermal stability when added to a thermoplastic resin.

As the inorganic fine particles used in the present invention, those subjected to surface treatment may be used. Inorganic materials and/or organic materials are preferred as surface treatment agents. Specific examples include metal oxides such as alumina, silica, and zirconia, silane coupling agents, titanium coupling agents, organic acids, polyols, and organic materials such as silicone.

The resin molding of the present invention preferably contains 0.0005 to 0.5 parts by mass of inorganic fine particles with respect to 100 parts by mass of the thermoplastic resin. The lower limit of the content of the inorganic fine particles is more preferably 0.0008 parts by mass or more, still more preferably 0.001 parts by mass or more, and even more preferably 0.003 parts by mass or more with respect to 100 parts by mass of the thermoplastic resin. The upper limit of the content of the inorganic fine particles is preferably 0.3 parts by mass or less, more preferably 0.1 parts by mass or less, relative to 100 parts by mass of the thermoplastic resin. Such a content makes it easier to adjust the difference in total light transmittance and spectral transmittance (|T ₇₀₀ −T ₅₀₀ |) within a desired range.
In particular, when the thickness of the resin molding is 100 μm or more (preferably 100 μm to 3 mm), the content of the inorganic fine particles is more preferably 0.001 parts by mass or more, more preferably 0.002 parts by mass or more with respect to 100 parts by mass of the thermoplastic resin. Moreover, the content of the inorganic fine particles is preferably 0.008 parts by mass or less with respect to 100 parts by mass of the thermoplastic resin.
In addition, when the thickness of the resin molding is less than 100 μm (preferably 30 μm to less than 100 μm), the content of the inorganic fine particles is more preferably 0.001 parts by mass or more, more preferably 0.01 parts by mass or more, and even more preferably 0.2 parts by mass or more with respect to 100 parts by mass of the thermoplastic resin. Further, the content of the inorganic fine particles is more preferably 0.3 parts by mass or less, still more preferably 0.2 parts by mass or less, and even more preferably 0.1 parts by mass or less with respect to 100 parts by mass of the thermoplastic resin.
Only one kind of inorganic fine particles may be used, or two or more kinds thereof may be used. When two or more are used, the total amount is preferably within the above range.
In particular, desired optical properties can be obtained more easily by blending two or more kinds of inorganic fine particles having different particle sizes.

The resin molding of the present invention preferably contains a total of 60% by mass or more of the thermoplastic resin and the inorganic fine particles, more preferably 70% by mass or more, still more preferably 80% by mass or more, still more preferably 90% by mass or more, still more preferably 95% by mass or more, and even more preferably 98% by mass or more.

（式（１）中、Ｒ^１およびＲ^２はそれぞれ独立に、炭素原子数１～３０のアルキル基または炭素原子数６～３０のアリール基を表す。）

（式（２）中、Ｒ^３～Ｒ^７は、それぞれ独立に、水素原子、炭素原子数６～２０のアリール基または炭素原子数１～２０のアルキル基を表す。）<Antioxidant (C)>
The resin molding of the present invention preferably contains an antioxidant.
Examples of antioxidants include phenol antioxidants, amine antioxidants, phosphorus antioxidants, thioether antioxidants, etc. Phosphorus antioxidants and phenol antioxidants (more preferably hindered phenol antioxidants) are preferred. Phosphorus-based antioxidants are particularly preferred among these because they are excellent in the hue of the resin molding.
Phosphite-based stabilizers preferred as phosphorus-based antioxidants are preferably phosphite compounds represented by the following formula (1) or (2).

(In formula (1), R ¹ and R ² each independently represent an alkyl group having 1 to 30 carbon atoms or an aryl group having 6 to 30 carbon atoms.)

(In Formula (2), R ³ to R ⁷ each independently represent a hydrogen atom, an aryl group having 6 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms.)

In the above formula (1), the alkyl groups represented by R ¹ and R ² are each independently preferably a linear or branched alkyl group having 1 to 10 carbon atoms. When R ¹ and R ² are aryl groups, aryl groups represented by the following general formulas (1-a), (1-b), or (1-c) are preferred.

（式（１－ａ）中、Ｒ^Ａは、それぞれ独立に、炭素原子数１～１０のアルキル基を表す。式（１－ｂ）中、Ｒ^Ｂは、それぞれ独立に、炭素原子数１～１０のアルキル基を表す。）

(In formula (1-a), R ^A each independently represents an alkyl group having 1 to 10 carbon atoms.In formula (1-b), R ^B each independently represents an alkyl group having 1 to 10 carbon atoms.)

Details of the antioxidant can be referred to paragraphs 0057 to 0061 of JP-A-2017-031313, the contents of which are incorporated herein.

The content of the antioxidant is preferably 0.005 parts by mass or more, more preferably 0.007 parts by mass or more, and still more preferably 0.01 parts by mass or more with respect to 100 parts by mass of the thermoplastic resin. The upper limit of the content of the antioxidant is preferably 0.4 parts by mass or less, more preferably 0.3 parts by mass or less, still more preferably 0.2 parts by mass or less, and still more preferably 0.1 parts by mass or less with respect to 100 parts by mass of the thermoplastic resin.
By setting the content of the antioxidant to 0.005 parts by mass or more, it is possible to obtain a resin molding having better hue and heat discoloration resistance. Moreover, by setting the content of the antioxidant to 0.4 parts by mass or less, it is possible to obtain a resin molding having good wet heat stability without deteriorating the resistance to heat discoloration.
Further, when a combination of a phosphorus antioxidant and a phenolic antioxidant (preferably a hindered phenolic antioxidant) is used as an antioxidant, the content ratio is based on 100 parts by weight of the thermoplastic resin.
Only one antioxidant may be used, or two or more antioxidants may be used. When two or more are used, the total amount is preferably within the above range.

<Ultraviolet absorber (D)>
The resin molding of the present invention preferably also contains an ultraviolet absorber. The inclusion of a UV absorber can make it more suitable for outdoor use.
The ultraviolet absorber is preferably an inorganic ultraviolet absorber or an organic ultraviolet absorber, more preferably an organic ultraviolet absorber.
Examples of organic UV absorbers include benzotriazole-based compounds, benzophenone-based compounds, salicylate-based compounds, cyanoacrylate-based compounds, triazine-based compounds, oxanilide-based compounds, malonic acid ester compounds, hindered amine-based compounds, and oxalic acid anilide-based compounds. Among these, benzotriazole compounds (compounds having a benzotriazole structure) are more preferable.
Specific examples of the ultraviolet absorber can be referred to paragraphs 0049 to 0055 of JP-A-2017-031313, the contents of which are incorporated herein.

The content of the ultraviolet absorber is preferably 0.005 parts by mass or more, more preferably 0.007 parts by mass or more, and still more preferably 0.01 parts by mass or more with respect to 100 parts by mass of the thermoplastic resin. In addition, the upper limit of the content of the ultraviolet absorber is preferably 3.0 parts by mass or less, more preferably 2.0 parts by mass or less, still more preferably 1.0 parts by mass or less, and still more preferably 0.8 parts by mass or less with respect to 100 parts by mass of the thermoplastic resin.
By setting the content of the ultraviolet absorber to 0.005 parts by mass or more, it is possible to obtain a resin molding having excellent weather resistance. Further, by setting the content of the ultraviolet absorber to 3.0 parts by mass or less, the amount of outgas during molding can be suppressed.
Only one type of ultraviolet absorber may be used, or two or more types may be used. When two or more are used, the total amount is preferably within the above range.

<Release agent (E)>
The resin molding of the present invention may contain a release agent.
By including a mold release agent, it is possible to improve the winding property when winding a resin molded product (film-shaped or sheet-shaped resin molded product), and to make it easier to release when molding using a mold.
The type of the release agent is not particularly defined, but examples of the release agent include at least one compound selected from the group consisting of aliphatic carboxylic acids, esters of aliphatic carboxylic acids and alcohols, aliphatic hydrocarbon compounds having a number average molecular weight of 200 to 15,000, polyethers having a number average molecular weight of 100 to 5,000, and polysiloxane-based silicone oils.
Details of the release agent can be referred to paragraphs 0035 to 0039 of WO2015/190162, the contents of which are incorporated herein.

The content of the release agent is preferably 0.001 parts by mass or more, more preferably 0.005 parts by mass or more, and still more preferably 0.007 parts by mass or more with respect to 100 parts by mass of the thermoplastic resin. The upper limit of the content of the release agent is preferably 1.0 parts by mass or less, more preferably 0.5 parts by mass or less, still more preferably 0.1 parts by mass or less, and still more preferably 0.05 parts by mass or less with respect to 100 parts by mass of the thermoplastic resin.
Only one release agent may be used, or two or more release agents may be used. When two or more are used, the total amount is preferably within the above range.

<Other ingredients>
In addition to the above components, the resin molding of the present invention may contain a heat stabilizer, flame retardant, flame retardant aid, colorant, antistatic agent, fluorescent brightener, antifog agent, fluidity improver, plasticizer, dispersant, antibacterial agent, antiblocking agent, impact modifier, sliding modifier, hue modifier, acid trapping agent, and the like. These components may be used alone or in combination of two or more.

<Screen>
The screen of the present invention contains the resin molding of the present invention. The screen of the present invention is preferably a transparent screen with high transparency. The term “transparent” used in this specification means having transparency that allows the background of the screen to be seen through to some extent, and is intended to include semi-transparency. The screen of the present invention preferably has high visible light transmittance.

The shape of the resin molding and screen of the present invention may be either flat or curved, and may be two-dimensionally or three-dimensionally processed. The processing method is not particularly limited, but preferred examples thereof include thermal processing, punching, cold bending, drawing, etc. Hot bending, curved surface processing, free blow molding are more preferable, and press molding, vacuum molding, pneumatic molding, and natural standing are particularly preferable.

The screen of the present invention may have layers other than the resin molded article of the present invention (in particular, a film-like or sheet-like resin molded article). Examples include a support layer for supporting the resin molded article of the present invention, a protective layer for protecting the surface of the resin molded article of the present invention, and an adhesive layer or adhesive layer for adhering other layers to the resin molded article of the present invention.

In particular, the screen of the present invention preferably has an adhesive layer on at least one side. A screen having an adhesive layer can be attached to a glass (preferably a glass window) or a resin sheet (preferably a transparent resin sheet). As the resin sheet, a polycarbonate sheet, a polymethyl methacrylate sheet, a poly(styrene-methyl methacrylate) copolymer sheet and the like are preferably used.
The type of adhesive layer is not particularly limited, but it preferably contains at least one of an acrylic adhesive, a silicone adhesive and a urethane adhesive. Higher adhesiveness can be achieved by using these adhesives. More specifically, moderate adhesion to the primer layer can be achieved.
In addition, the adhesive layer may have removability, and the adhesive layer having removability can be adhered again even if it is once peeled off from the pasting material.

The acrylic pressure-sensitive adhesive is a pressure-sensitive adhesive containing an acrylic polymer, and specific examples thereof include DIC's Fine Tack (CT-3088, CT-3850, CT-6030, CT-5020, CT-5030), Quick Master (SPS-900-IV, Quick Master SPS-1040NT-25), and Toyochem's pressure-sensitive adhesive Oripine.
The silicone pressure-sensitive adhesive is a pressure-sensitive adhesive containing a silicone-based polymer, and specific examples thereof include polymers produced by Shin-Etsu Chemical Co., Ltd., KR-3704 (main agent) and CAT-PL-50T (platinum catalyst).
A urethane adhesive is an adhesive containing a urethane-based polymer, and specific examples thereof include the adhesive Oripine manufactured by Toyochem Co., Ltd., and the like.
As used herein, a polymer means a compound having a number average molecular weight of 1,000 or more, preferably 2,000 or more.

As the adhesive layer, in addition to the above, within the scope of the present invention, the adhesive layer described in paragraphs 0026 to 00053 of JP 2017-200975, the adhesive layer described in paragraphs 0056 to 0060 of JP 2013-020130, the adhesive sheet of WO 2016/158827, and paragraph 003 of JP 2016-182791. 1 to 0032 of the adhesive layer, and the rubber-based adhesive layer of paragraphs 0057 to 0084 of JP-A-2015-147837, the contents of which are incorporated herein.

The thickness of the adhesive layer is not particularly limited, but is preferably 10 μm or more, more preferably 25 μm or more, even more preferably 35 μm or more, and may be 40 μm or more. Also, the thickness of the adhesive layer is preferably 70 μm or less, more preferably 60 μm or less. By setting it within the above range, more appropriate adhesive properties and adhesive strength are achieved.

The peel strength of the adhesive layer can be controlled by the composition of the adhesive layer. For example, in the case of a silicone-based pressure-sensitive adhesive layer, it is possible to adjust the release force by adjusting the main chain structure, terminal structure, branched structure, molecular weight, etc. of polyorganosiloxane. In the case of a urethane-based adhesive layer, the release force can be adjusted by adjusting the main chain structure and molecular weight of the composed polyol and polyisocyanate, their ratio, and the like. In the case of an acrylic adhesive layer, the release force can be adjusted by adjusting the monomer structure, molecular weight, and copolymerization ratio of the acrylic-containing resin, the main chain structure and molecular weight of the polyisocyanate, and the ratio of the acrylic-containing resin to the polyisocyanate.
Also, by combining adhesives having different adhesive strengths, it is possible to form an adhesive layer having an arbitrary peeling strength.

The screen of the present invention may have a primer layer between it and the adhesive layer. When the adhesive layer is coated, the primer layer can suppress whitening and expansion of the thermoplastic resin due to the solvent contained in the adhesive.
The primer layer preferably contains a urethane (meth)acrylate resin. By using a urethane (meth)acrylate resin, a pressure-sensitive adhesive sheet with more excellent heat resistance can be obtained.

In addition, since the resin molded article of the present invention can be excellent in strength and durability even if it is a single layer, it can be suitably used as a self-supporting screen that does not have a support layer. Further, the screen substantially composed of only the resin molding of the present invention is excellent in that the manufacturing process is easy and damage due to peeling of each layer does not occur. Here, "substantially" means that the portion functioning as a screen consists only of the resin molding of the present invention. In other words, it does not preclude having parts other than the resin molding of the present invention in other parts.
Although the size of the screen of the present invention is not particularly defined, for example, it is a square, and the length of one side is preferably 5 to 1000 cm, and the length of the other side is preferably 5 to 1000 cm.

<Method for manufacturing resin molding and screen>
The resin molding of the present invention is manufactured as follows.
Specifically, first, a predetermined amount of inorganic fine particles is added to a thermoplastic resin and melt-kneaded. Then, for example, by strand cutting, thermoplastic resin pellets containing inorganic fine particles are obtained. A film-like or sheet-like resin molding can be produced by extruding the pellets thus obtained, for example, using a film extruder. Also, by injection molding with an injection molding machine, a resin molded body having an arbitrary shape can be produced. In addition, by using a film extruder or an injection molding machine having a melt-kneading function, a resin molding can be produced from a blend powder of a thermoplastic resin and inorganic fine particles. Moreover, the shape of the screen can be adjusted by appropriately selecting and adopting the various processing methods described above.

<Image projection>
The screen of the present invention as described above can be used in the projection of images. In image projection, the image may be projected from the back or front of the screen of the present invention. That is, the screen of the present invention may be a transmissive screen for observing transmitted light or a reflective screen for observing reflected light, but a transmissive screen is preferable.

EXAMPLES The present invention will be described more specifically with reference to examples below. The materials, usage amounts, ratios, processing details, processing procedures, etc. shown in the following examples can be changed as appropriate without departing from the gist of the present invention. Accordingly, the scope of the present invention is not limited to the specific examples shown below.

<raw materials>
Thermoplastic resin (A)
(A1) Aromatic polycarbonate resin obtained by an interfacial polymerization method using bisphenol A as a starting material (Mitsubishi Engineering-Plastics Corporation, Iupilon H-4000F, viscosity average molecular weight: 16,000)
(A2) Aromatic polycarbonate resin obtained by an interfacial polymerization method using bisphenol A as a starting material (Mitsubishi Engineering-Plastics Corporation, Iupilon E-2000F, viscosity average molecular weight: 27,000)
(A3) Thermoplastic polyester resin (PCTG) carboxylic acid component is terephthalic acid, diol component is diethylene glycol (40 mol%) and 1,4-cyclohexanedimethanol (60 mol%), manufactured by SK Chemicals, SKYGREEN J2003)

Inorganic fine particles (B)
(B1) Titanium oxide (manufactured by Tayca Corporation, JR-301, number average particle size 347 nm, coefficient of variation 30.0%, aspect ratio 1.64, tap density 1.06 g/mL)
(B2) Titanium oxide (manufactured by Tayca Corporation, JR-600A, number average particle size 276 nm, coefficient of variation 61.2%, aspect ratio 1.87, tap density 0.99 g/mL)
(B3) Barium titanate (manufactured by Kyoritsu Materials Co., Ltd., BT-HP300, number average particle diameter 331 nm, coefficient of variation 32.4%, aspect ratio 1.28, tap density 1.18 g / mL)
(B4) Titanium oxide (manufactured by Sakai Chemical Industry Co., Ltd., R-38L, number average particle diameter 501 nm, coefficient of variation 41.3%, aspect ratio 1.50, tap density 1.29 g / mL)
(B5) Titanium oxide (manufactured by Sakai Chemical Industry Co., Ltd., R-39, number average particle diameter 231 nm, coefficient of variation 36.0%, aspect ratio 1.45, tap density 1.04 g / mL)
(B6) Titanium oxide (manufactured by Tayca Corporation, JR-405, number average particle size 209 nm, coefficient of variation 36.8%, aspect ratio 1.46, tap density 0.97 g/mL)
(B7) Titanium oxide (manufactured by Tayca Corporation, MT-700HD, number average particle size 68 nm, coefficient of variation 35.2%, aspect ratio 1.55, tap density 0.52 g/mL)
(B8) Titanium oxide (manufactured by Tayca Corporation, IP0516, number average particle size 535 nm, coefficient of variation 29.0%, aspect ratio 1.59, tap density 1.37 g/mL)

Antioxidant (C)
(C1) bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite (phosphorus-based antioxidant, ADEKA Co., Ltd. ADEKA STAB PEP-36)
(C2) tris (2,4-di-tert-butylphenyl) phosphite (phosphorus-based antioxidant, ADEKA Co., Ltd. ADEKA STAB 2112)
(C3) Pentaerythritol tetrakis [3-3,5-di-tert-butyl-4-hydroxyphenyl) propionate] (phenolic antioxidant Irganox 1010 manufactured by BASF Corporation)

UV absorber (D)
(D1) 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol (Shipro Kasei Co., Ltd., Seesorb 709)

Release agent (E)
(E1) Glycerin monostearate (Rikemar S-100A manufactured by Riken Vitamin Co., Ltd.)

<Measurement of Particle Size, Variation Coefficient and Aspect Ratio of Inorganic Fine Particles>
The number average particle size of the inorganic fine particles (B) was obtained by measuring the primary particle size from the SEM image of the inorganic fine particles (B) by scanning electron microscope (SEM) observation. Specifically, the value obtained by dividing the sum of the long and short sides of the inorganic fine particles (B) by 2 was taken as the primary particle size, and the average value of the 50 primary particle sizes was taken as the number average particle size. The coefficient of variation that indicates the particle size distribution was calculated by the following formula.

Variation coefficient (%) = standard deviation of 50 primary particle sizes / number average particle size x 100

The aspect ratio of the inorganic fine particles (B) was the average value of ratios of long sides to short sides of 50 particles.

<Method for measuring tap density>
The tap density (g/mL) of the inorganic fine particles (B) was measured according to JIS-Z-2512.

Examples 1-12, Comparative Examples 1-3
<Production of resin molding>
- Molding of 1 mm thick sheet Each of the components described above was weighed so as to be added in the amount described in Table 1 or Table 2, respectively. After that, after mixing for 15 minutes in a tumbler, injection molding is performed using an injection molding machine (“PE100” manufactured by Sodick) equipped with a vented biaxial plasticizer at a barrel temperature and plunger temperature of 280°C (for polycarbonate resin) or 260°C (for thermoplastic polyester resin), a mold temperature of 80°C (for polycarbonate resin) or 40°C (for thermoplastic polyester resin), and a cycle time of 60 seconds to perform injection molding of 100 mm x 100 mm x 1. A sheet (resin molding) having a thickness of mm (thickness of 1000 μm) was produced.
- Forming a film having a thickness of 75 μm Each of the components described above was weighed so as to be added in the amount described in Table 1 or Table 2, respectively. Then, after mixing for 15 minutes in a tumbler, a cylinder temperature of 280 ° C. (for polycarbonate resin) or 240 ° C. (for thermoplastic polyester resin) was melted and kneaded with a vented twin-screw extruder ("TEX30α" manufactured by Japan Steel Works, Ltd.) with a screw diameter of 32 mm to obtain pellets by strand cutting.
The obtained pellets were melted and extruded at a cylinder temperature of 280 ° C. (for polycarbonate resin) or 240 ° C. (for thermoplastic polyester resin) using a vented twin-screw film extruder with a screw diameter of 28 mm and a T-die lip (“TEM26DS” manufactured by Toshiba Machine Co., Ltd.) to produce a film (resin molded body) with a thickness of 100 mm × 100 mm × 75 μm.

<Evaluation of optical properties of resin molding>
The optical properties of the resin moldings produced in Examples and Comparative Examples were evaluated as follows.
<<Spectral Transmittance>>
Using a spectral colorimeter, the spectral transmittance (T ₅₀₀ ) (%) of the resin molded product at a wavelength of 500 nm and the spectral transmittance (T ₇₀₀ ) (%) of the resin molded product at a wavelength of 700 nm were measured with a D65 light source and a 10° field of view. Furthermore, the difference in spectral transmittance (|T ₇₀₀ −T ₅₀₀ |) was calculated.
As a spectral colorimeter, "SD6000" manufactured by Nippon Denshoku Industries Co., Ltd. was used.

<<Total light transmittance and haze>>
Using a haze meter, a 1 mm (1000 μm) thick sheet and a 75 μm thick film of the obtained resin molded product were measured for total light transmittance (%) and haze (%) of the resin molded product in accordance with JIS-K-7361 and JIS-K-7136 with a D65 light source and a 10° field of view.
As a haze meter, "HM-150" manufactured by Murakami Color Research Laboratory was used.

<<Color reproducibility of projected images>>
The resin molding was placed at a position 12 cm away from the image projection lens of an ultra short focus projector (manufactured by Ricoh Co., Ltd., product name: PJ WX4152). Next, an image was projected onto the resin molding from below at an angle of 45° with respect to the sheet surface or film surface of the resin molding, and the focus knob of the projector was adjusted so that the position of the resin molding was in focus. The projected image color reproducibility of the projector image observed from the front on the sheet surface or film surface of the resin molding was visually evaluated based on the following criteria. The image visibility was evaluated in a dark room by observing the opposite side of the projector, that is, the light transmitted through the resin molding. Evaluation results are shown in Tables 1 and 2.
<<<Evaluation Criteria for Image Color Reproducibility>>>
Good: The color reproducibility of the screen image was high.
Blueness: The screen image had a strong bluishness, and the color reproducibility was low.
Reddishness: The screen image had a strong reddishness, and the color reproducibility was low.

<<Transmitted light intensity I ₄₅ >>
Using a goniophotometer with a halogen lamp as a light source and an optical axis detouring device, the transmitted light intensity _I45 of the resin molding was measured under the following measurement conditions.
Specifically, in the optical axis detouring device shown in FIGS. 1 and 2, the measurement was performed by moving the light source section 2 and the light receiving section 6 as follows. First, in FIG. 1, the detour part 3 was adjusted so that light was emitted from a direction shifted by 10° from the X-axis direction to the Z-axis direction. Furthermore, in FIG. 2, the intensity of transmitted light received in the X-axis direction (0°) and the intensity of transmitted light when the light receiving unit 6 was moved so as to receive light at a position shifted by 45° from the X-axis direction in the Y-axis direction were measured, and the transmitted light intensity I ₄₅ at the 45° position was measured when the transmitted light intensity I ₀ at the 0° position was taken as 100%.
As a goniophotometer, "GP-200" manufactured by Murakami Color Research Laboratory was used.
・Measurement conditions: transmission ・High Volt Adj: -900
・Sensitivity Adj: 500
・Luminous aperture: 3.0
・Receiving aperture: 4.0
・Incident angle: 0°
・Sample tilt angle: 0°

As is clear from the above results, by setting the total light transmittance to 80.0 to 92.0% and the difference between the spectral transmittance of light at a wavelength of 700 nm and the spectral transmittance of light at a wavelength of 500 nm (|T ₇₀₀ −T ₅₀₀ |) from 0.50 to 1.80%, it was possible to suppress the reddish and bluish tinges of the projection screen image and increase the transmitted light intensity I ₄₅ (Examples 1 to 12).
On the other hand, when the value of |T ₇₀₀ −T ₅₀₀ | was less than 0.50%, the projected screen image was reddish and the transmitted light intensity I ₄₅ was low (Comparative Example 2). On the other hand, when the value of |T ₇₀₀ −T ₅₀₀ | was greater than 1.80%, the projected screen image was bluish (Comparative Examples 1 and 3).

[Preparation of primer paint]
Hexafunctional urethane acrylate (manufactured by Negami Kogyo Co., Ltd., trade name UN-3320HC) 90 parts by mass, bifunctional acrylate (manufactured by Nippon Shokubai Co., Ltd., trade name VEEA) 10 parts by mass, and photopolymerization initiator Irgacure-184 (manufactured by BASF, currently Omnirad 184 is sold by IGM Resins B.V. as a substitute) 5 parts by mass, propylene glycol monomethyl ether as a solvent. , the solid content was adjusted to 30% by mass to obtain a primer paint.

[Preparation of urethane adhesive paint 1]
To 100 parts by mass of the main agent (manufactured by Toyochem Co., Ltd., trade name Cyabine SH-101), 4 parts by mass of a curing agent (manufactured by Toyochem Co., Ltd., trade name T-501B) was added and thoroughly mixed to obtain a urethane adhesive coating 1.

[Preparation of silicone adhesive paint 1]
To 100 parts by mass of a silicone compound (manufactured by Shin-Etsu Chemical Co., Ltd., trade name KR-3704), 0.5 parts by mass of a platinum catalyst for curing (manufactured by Shin-Etsu Chemical Co., Ltd., trade name, CAT-PL-50T) was added, thoroughly mixed, and diluted with a solvent toluene so that the solid content was 40% by mass, to obtain Silicone Adhesive Paint 1.

[Preparation of acrylic adhesive paint 1]
To 100 parts by mass of the main agent (manufactured by DIC, trade name Finetac CT-3088), 1.5 parts by mass of a curing agent (manufactured by DIC, trade name D-100K) was added and thoroughly mixed to obtain an acrylic pressure-sensitive adhesive paint 1.

[Examples A to C]
On one surface of the films of Examples 7, 8 and 9, the above primer paint was applied so that the dry film thickness was 3 μm, and dried at 100° C. for 2 minutes in a hot air circulation dryer. Further, the films were irradiated with ultraviolet rays with an ultraviolet curing device so that the integrated light quantity was 200 mJ/cm ² to obtain primer-treated films 7′, 8′, and 9′ each having a primer layer formed on the surface of the base material.
Next, the above urethane adhesive paint 1 was applied to the surface of the primer layer side of the primer-treated film 7' so that the thickness of the dry coating film was 50 μm, and dried at 120° C. for 1 minute in a hot air circulation dryer to form an adhesive layer.
Thus, a transparent screen film with an adhesive layer of Example A was obtained.

A transparent screen film with an adhesive layer of Example B was obtained in the same manner as in Example A except that the primer-treated film 7' was changed to the primer-treated film 8' and the urethane pressure-sensitive adhesive coating 1 was changed to the silicone pressure-sensitive adhesive coating 1.

A transparent screen film with an adhesive layer of Example C was obtained in the same manner as in Example A except that the primer-treated film 7 ' was changed to the primer-treated film 9 ' and the urethane pressure-sensitive adhesive paint 1 was changed to the acrylic pressure-sensitive adhesive paint 1.

When the obtained transparent screen films with adhesive layers of Examples A to C were cut into A4 size and pasted to a glass plate, it was confirmed that they exhibited good pasting properties without peeling or air bubbles. In addition, there was no significant difference in the image and color of the projection screen image before and after the adhesive layer was applied.

1 optical axis detour device for measuring transmitted light distribution 2 light source unit 3 detour device 4 sample stand (location where resin molded body is installed)
5 light receiving arm 6 light receiving part

Claims (17)

A resin molding containing a thermoplastic resin and inorganic fine particles,
The difference between the spectral transmittance of light with a wavelength of 700 nm and the spectral transmittance of light with a wavelength of 500 nm when measured with a CIE standard D65 light source and a 10° field of view of the resin molding is 0.50 to 1.80%,
The resin molded product having a total light transmittance of 80.0 to 92.0% when measured with a CIE standard D65 light source and a 10° field of view. 2. The resin molding according to claim 1, wherein said thermoplastic resin is a polycarbonate resin. 2. The molded resin article according to claim 1, wherein said thermoplastic resin is a thermoplastic polyester resin. 4. The resin molding according to claim 3, wherein the diol component constituting said thermoplastic polyester resin contains at least 1,4-cyclohexanedimethanol. The resin molding according to any one of claims 1 to 4, wherein the inorganic fine particles have a tap density of 0.60 to 1.35 g/mL. The resin molding according to any one of claims 1 to 5, wherein the inorganic fine particles are oxides containing titanium. 7. The resin molding according to claim 1, wherein the inorganic fine particles are contained in a proportion of 0.0005 to 0.5 parts by mass with respect to 100 parts by mass of the thermoplastic resin. The resin molding according to any one of claims 1 to 7, wherein the resin molding is in the form of a film or a sheet. 9. The resin molding according to claim 8, wherein the resin molding has a thickness of 30 to 3000 μm. The resin molding according to any one of claims 1 to 9, wherein the resin molding further contains at least one antioxidant consisting of a phosphorus antioxidant and a phenolic antioxidant, and the total amount of the antioxidant is 0.005 to 0.4 parts by mass with respect to 100 parts by mass of the thermoplastic resin. The resin molded product according to any one of claims 1 to 10, wherein the resin molded product further contains an ultraviolet absorber in a proportion of 0.005 to 3.0 parts by mass with respect to 100 parts by mass of the thermoplastic resin. The resin molding according to any one of claims 1 to 11, wherein the total light transmittance is 89.5% or less. A screen comprising the resin molding according to any one of claims 1 to 12. 14. A screen according to claim 13, having an adhesive layer on at least one side of said screen. 15. The screen of Claim 14, wherein the adhesive layer comprises an acrylic adhesive. 16. A screen according to claim 14 or 15, wherein said adhesive layer comprises a silicone adhesive. A screen according to any one of claims 14 to 16, wherein said adhesive layer comprises a urethane adhesive.

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