Image bearing laminate, method for producing same, interlayer for laminated glass, and laminated glass

Abstract

An image bearing laminate 10A that bears an image includes an image bearing portion 15, a first resin layer 11, and a movement prevention portion 20, the movement prevention portion 20 including a first movement prevention layer 21 that is positioned between the image bearing portion 15 and the first resin layer 11 and that prevents movement of constituent materials of the image bearing portion 15 and the first resin layer 11.

Description

Technical Field

[0001] The present invention relates to an image-bearing laminate that bears an image, an interlayer film for laminated glass having the image-bearing laminate, and laminated glass. Background Art

[0002] Laminated glass is safe because it minimizes the scattering of glass fragments even when broken by external impact. Therefore, it is widely used in various vehicles, including automobiles, railway vehicles, aircraft, and ships, as well as in buildings. Laminated glass is commonly known as a laminated glass in which an interlayer film containing a resin component such as polyvinyl acetal resin or ethylene-vinyl acetate copolymer resin is interposed between a pair of glass sheets and then integrated.

[0003] In recent years, market demands for design in glass structures, such as laminated glass, have diversified. For example, in automotive applications, there is a growing demand and concept for glass to be designed to reflect the vehicle's design and color. Furthermore, in architectural applications, demand continues to grow for decorative glass for both exterior and interior applications.

[0004] To enhance the design of glass structures such as laminated glass, it is known to provide a luminescent layer, a colored layer, or a printed layer within an interlayer. For example, as described in Patent Document 1, it is known to apply decoration by printing on a thermoplastic rigid interlayer constituting the interlayer using inkjet printing. Furthermore, Patent Document 2 discloses forming a luminescent layer on a thermoplastic sheet constituting the interlayer using screen printing, inkjet printing, flexographic printing, offset printing, or the like.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: International Publication No. 2004 / 011271

[0008] Patent Document 2: International Publication No. 2009 / 122094 Summary of the Invention

[0009] Problems to be solved by the invention

[0010] However, when printing with ink to form an image with a predetermined pattern or design on the intermediate layer, the ink itself or the dye contained in the ink may migrate to other resin layers during long-term use. If the ink or dye migrates to other resin layers, the clarity and resolution of the printed image may deteriorate.

[0011] Therefore, an object of the present invention is to provide an image-carrying laminate in which formed images are not disturbed and the clarity and resolution of the images are well maintained even during long-term use.

[0012] Means for solving problems

[0013] The present inventors have conducted intensive research and have found that the above-mentioned problems can be solved by providing a movement prevention portion between the image supporting portion and the resin layer in an image supporting laminate having an image supporting portion and a resin layer to prevent the movement of the constituent materials of the image supporting portion and the first resin layer. This has led to the completion of the following invention. Specifically, the present invention provides the following [1] to

[15] .

[0014] [1] An image-bearing laminate, which is an image-bearing laminate bearing an image,

[0015] It includes an image bearing portion, a first resin layer, and a movement preventing portion.

[0016] The movement preventing portion includes a first movement preventing layer that is located between the image supporting portion and the first resin layer and prevents movement of constituent materials of the image supporting portion and the first resin layer.

[0017] [2] According to the image bearing laminate described in [1] above, the above-mentioned movement prevention portion includes a second movement prevention layer and a peripheral movement prevention portion, the second movement prevention layer is located on the surface of the above-mentioned image bearing portion opposite to the surface on which the above-mentioned first movement prevention layer is provided, and the peripheral movement prevention portion is located on the peripheral side of the above-mentioned image bearing portion.

[0018] [3] The image-bearing laminate according to [2] above, further comprising a second resin layer.

[0019] The second migration prevention layer is located between the image bearing portion and the second resin layer.

[0020] The first resin layer and the second resin layer are stacked with the movement preventing portion interposed therebetween, and the image bearing portion is enclosed within the movement preventing portion.

[0021] [4] The image-bearing laminate according to [2] or [3] above, further comprising a second resin layer.

[0022] The second migration prevention layer is located between the image bearing portion and the second resin layer.

[0023] The first resin layer and the second resin layer are partially laminated via the movement preventing portion, and are directly laminated in other portions.

[0024] [5] The image-bearing laminate according to any one of [2] to [4] above, further comprising a second resin layer.

[0025] The second migration prevention layer is located between the image bearing portion and the second resin layer.

[0026] A portion of the second resin layer is directly laminated on a portion of the first migration preventing layer.

[0027] [6] The image bearing laminate according to any one of [1] to [5] above, wherein the image bearing portion is formed of an ink containing a dye.

[0028] [7] The image-bearing laminate according to [6] above, wherein the dye is a compound having a terephthalate skeleton.

[0029] [8] The image carrying laminate according to [6] or [7], wherein the movement preventing portion does not substantially contain a dye.

[0030] [9] The image carrying laminate according to any one of [1] to [8], wherein the total thickness of the movement prevention portion and the image carrying portion is 1 μm or more and 200 μm or less.

[0031]

[10] The image supporting laminate according to any one of [1] to [9] above, wherein the thickness ratio of the first anti-migration layer to the image supporting portion is 1:200 to 200:1.

[0032]

[11] The image bearing laminate according to any one of [1] to

[10] above, wherein the movement preventing portion is formed by curing a resin composition containing an acrylate compound.

[0033]

[12] An interlayer film for laminated glass, comprising the image-bearing laminate according to any one of [1] to

[11] .

[0034]

[13] A laminated glass comprising the interlayer film for laminated glass according to

[12] .

[0035]

[14] The method for producing an image-bearing laminate according to any one of [1] to

[11] , comprising forming at least a portion of the movement prevention portion and the image-bearing portion by printing.

[0036]

[15] The method for producing an image-bearing laminate according to

[14] , wherein the printing is at least one of inkjet printing and screen printing.

[0037] Effects of the Invention

[0038] According to the image-bearing laminate of the present invention, even during long-term use, the formed image does not become disordered and can maintain good clarity and resolution. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic cross-sectional view showing the image bearing laminate according to the first embodiment.

[0040] Figure 2 This is a schematic cross-sectional view showing an image bearing laminate according to the second embodiment.

[0041] Figure 3 This is a schematic cross-sectional view showing an image bearing laminate according to a third embodiment.

[0042] Figure 4 This is a schematic cross-sectional view showing an image bearing laminate according to a fourth embodiment.

[0043] Figure 5 It is a schematic cross-sectional view showing an image bearing laminate according to a fifth embodiment.

[0044] Figure 6 It is a schematic cross-sectional view showing an image bearing laminate according to the sixth embodiment. DETAILED DESCRIPTION

[0045] Hereinafter, the present invention will be described with reference to embodiments.

[0046] <Image-carrying laminate>

[0047] The image-bearing laminate of the present invention is an image-bearing laminate that supports an image and comprises an image-bearing portion, a resin layer, and a movement-preventing portion. As described below, the movement-preventing portion is positioned at a predetermined position and prevents the materials constituting the image-bearing portion and the resin layer from shifting relative to each other, thereby preventing material constituting the image-bearing portion from migrating into the resin layer, or vice versa. Consequently, even with long-term use, image bleeding is prevented, and the clarity and resolution of the image carried on the image-bearing portion are maintained.

[0048] As described later Figures 1 to 6 As shown, the image-bearing laminate preferably includes at least a first resin layer 11 as a resin layer, but preferably also includes a second resin layer 12 in addition to the first resin layer 11. When the first resin layer 11 and the second resin layer 12 are provided, the image-bearing member 15 is preferably provided between the first resin layer 11 and the second resin layer 12.

[0049] like Figure 1As shown in FIG. 1 , the movement preventing portion 20 includes at least a first movement preventing layer 21 located between the image supporting portion 15 and the first resin layer 11, but it is also preferable to have a first movement preventing layer 21 located between the image supporting portion 15 and the first resin layer 11. Figures 2 to 6 As shown, the image carrier 15 further includes a second anti-movement layer 22 and an outer peripheral anti-movement portion 23. The second anti-movement layer 22 is located on the surface of the image carrier 15 opposite to the surface on which the first anti-movement layer 21 is provided. The second anti-movement layer 22 is preferably located between the image carrier 15 and the second resin layer 12. Furthermore, the outer peripheral anti-movement portion 23 is located on the outer periphery of the image carrier.

[0050] Hereinafter, each member constituting the image bearing laminate of the present invention will be described in more detail.

[0051] [Image carrier]

[0052] The image-bearing member is the portion of the image-bearing laminated body used to form an image. The image-bearing member preferably contains a colorant. While pigments and dyes can be used as the colorant, dyes are preferred. If the image-bearing member contains a dye, the dye may migrate to other layers such as the resin layer, potentially degrading image clarity and resolution. However, in the present invention, as described above, the provision of the migration prevention member effectively suppresses this degradation in image clarity and resolution.

[0053] As the colorant used in the image bearing member, known pigments and dyes can be used. As the colorant, pigments such as blue, yellow, red, green, purple, white, and black can be used.

[0054] Furthermore, the colorant can color by selectively absorbing visible light, but is not limited to such colorants. It is also preferable to use a luminescent material called a fluorescent material, which emits visible light when irradiated with excitation light. It should be noted that the fluorescent material (luminescent material) can be a material that emits so-called phosphorescence when irradiated with excitation light.

[0055] The maximum emission wavelength (maximum excitation wavelength) of the excitation light is not particularly limited, but is preferably 420 nm or less, more preferably 410 nm or less, and even more preferably 408 nm or less. Furthermore, it is preferably 300 nm or more, more preferably 350 nm or more, and even more preferably 380 nm or more. By setting the maximum emission wavelength of the excitation light to be above the lower limit and below the upper limit, the luminescent material can efficiently emit visible light by the excitation light.

[0056] As the luminescent material used for the luminescent layer, for example, a lanthanide coordination compound, a luminescent material having a terephthalate structure, a luminescent material having a naphthalimide skeleton, a luminescent material having a coumarin skeleton, a luminescent material having a quinoline skeleton, etc. can be used. One luminescent material can be used alone, or two or more can be used in combination. By combining a plurality of luminescent materials having different luminescent wavelengths, not only a monochrome image can be displayed, but also an image having a combination of various colors can be displayed. Among the above, the luminescent material is preferably a lanthanide coordination compound or a luminescent material having a terephthalate structure, and more preferably a luminescent material having a terephthalate structure.

[0057] Compounds having a terephthalate structure are used as so-called dyes and generally tend to migrate to other layers such as the resin layer. However, in the present invention, by providing a migration prevention layer as described above, even when a compound having a terephthalate skeleton is used as the colorant, migration of the colorant of the image bearing member to the resin layer can be effectively prevented. Compounds having a terephthalate skeleton are typically colorless, and as long as no excitation light is applied, the image bearing member can be rendered colorless and transparent.

[0058] In the image bearing member, the colorant may be used alone or in combination of two or more.

[0059] Examples of the compound having a terephthalate skeleton include compounds having a diterephthalate structure, for example, a compound having a structure represented by the following formula (1) and a compound having a structure represented by the following formula (2). These may be used alone or in combination of two or more.

[0060]

[0061] In the above formula (1), R 1 represents an organic group, and x is 1, 2, 3 or 4.

[0062] From the viewpoint of improving the transparency of the image bearing member, x is preferably 1 or 2, more preferably has a hydroxyl group at the 2-position or 5-position of the benzene ring, and even more preferably has a hydroxyl group at the 2-position and 5-position of the benzene ring.

[0063] The above R 1 The organic group is preferably a hydrocarbon group, more preferably a hydrocarbon group having 1 to 10 carbon atoms, further preferably a hydrocarbon group having 1 to 5 carbon atoms, and particularly preferably a hydrocarbon group having 1 to 3 carbon atoms. If the number of carbon atoms of the hydrocarbon group is 10 or less, the fluorescent material having a terephthalate skeleton can be easily dispersed or dissolved in the ink. The hydrocarbon group is preferably an alkyl group. In formula (1), the two R 1 They can be the same or different from each other.

[0064] Examples of the compound having a structure represented by the above formula (1) include diethyl 2,5-dihydroxyterephthalate and dimethyl 2,5-dihydroxyterephthalate. Among them, the compound having a structure represented by the above general formula (1) is preferably diethyl 2,5-dihydroxyterephthalate ("diethyl 2,5-dihydroxyterephthalate" manufactured by Aldrich).

[0065] In the above formula (2), R 2 Represents an organic group, R 3 and R 4 represents a hydrogen atom or an organic group, and y is 1, 2, 3 or 4.

[0066] The above R 2 The organic group is preferably a hydrocarbon group, more preferably a hydrocarbon group having 1 to 10 carbon atoms, further preferably a hydrocarbon group having 1 to 5 carbon atoms, and particularly preferably a hydrocarbon group having 1 to 3 carbon atoms. If the number of carbon atoms of the above hydrocarbon group is below the above upper limit, the fluorescent material having a terephthalate skeleton can be easily dispersed or dissolved in the ink. The above hydrocarbon group is preferably an alkyl group. In formula (2), the two R 1 They can be the same or different from each other.

[0067] In the above general formula (2), NR 3 R 4 R is an amino group. 3 and R 4 Preferably, each independently represents a hydrocarbon group having 1 to 10 carbon atoms or a hydrogen atom. The hydrocarbon group more preferably has 1 to 5 carbon atoms, and further preferably has 1 to 3 carbon atoms. 3 and R 4 The hydrocarbon groups of R are preferably all alkyl groups. 3 and R 4 They can also be combined to form a ring. In the case of forming a ring, R 3 and R 4 The total number of carbon atoms in is preferably 2 to 6, more preferably 2 to 5. Examples of the ring include azetidine and the like.

[0068] In the compound having the structure represented by the above general formula (2), y is preferably 2. In the formula (2), two or more NR 3 R 4 In the case of 2 or more NR 3 R 4 They can be the same or different from each other.

[0069] Preferred examples of the compound having a structure represented by the general formula (2) include diethyl 2,5-diaminoterephthalate (e.g., manufactured by Aldrich), dimethyl 2,5-bis(dimethylamino)terephthalate, and diethyl 2,5-bis(azetidin-1-yl)terephthalate.

[0070] The image bearing portion is preferably formed by an ink containing a colorant, and more preferably by an ink containing a dye. Furthermore, the ink may be an aqueous ink using water as a solvent, a solvent ink using an organic solvent, or an ink that does not use a solvent. Furthermore, it is preferable that the ink contain a binder resin. By containing the binder resin, the colorant in the image bearing portion is appropriately retained by the binder resin. As the binder resin, it is preferable to use a known resin used for inks. It may be a thermoplastic resin, or a curable resin such as an active energy ray curable resin or a thermosetting resin. Among these, active energy ray curable resins, particularly ultraviolet curable resins, are preferred. By using an ultraviolet curable resin, the ink may be an ultraviolet curable ink, which will be described later.

[0071] Furthermore, the ink may be one that is cured by drying by vaporizing a solvent, or it may be a curable ink. Curable inks can be cured by heating or exposure to active energy rays. Examples of active energy rays include visible light, ultraviolet light, infrared light, X-rays, α-rays, β-rays, and γ-rays. Furthermore, the curable ink contains a binder resin, preferably a curable resin. Of the above, active energy ray-curable inks are preferred, with ultraviolet-curable inks being particularly preferred.

[0072] In the case of UV-curable inks, the ink preferably contains a polymerizable compound that is curable by active energy rays as a curable binder resin component. The polymerizable compound can be any known compound used in UV-curable inks, but acrylate compounds are preferred.

[0073] The acrylate compound is a compound having a (meth)acryloyl group. It may be a monofunctional acrylate compound having one (meth)acryloyl group, but preferably includes a polyfunctional acrylate compound having at least two (meth)acryloyl groups. The use of a polyfunctional acrylate compound facilitates proper curing of the image bearing member.

[0074] The multifunctional acrylate compound can be either a diacrylate compound having two (meth)acryloyl groups or a multifunctional acrylate compound having three or more (meth)acryloyl groups. However, the acrylate compound contained in the ink more preferably comprises a multifunctional acrylate compound having three or more (meth)acryloyl groups. Using a multifunctional acrylate compound having three or more (meth)acryloyl groups allows the image carrier to form a cross-linked structure having a three-dimensional network structure, thereby increasing mechanical strength. Furthermore, the material constituting the image carrier is less likely to migrate to the resin layer, etc.

[0075] In addition to the colorant and binder resin, the UV curing ink may also contain, as appropriate, known components used in inks, such as sensitizers, dispersants, leveling agents, defoaming agents, surface conditioners, photopolymerization initiators, and other components typically found in UV curing inks. Furthermore, the UV curing ink may not contain a solvent, but may contain, as appropriate, an organic solvent.

[0076] The image bearing member is preferably a printed layer formed by printing, more preferably the first migration preventing layer is formed by printing, and particularly preferably the first migration preventing layer formed on the first resin layer is formed by printing.

[0077] The image-bearing portion can be formed on the entire surface of the image-bearing laminate by so-called solid printing. However, the image-bearing portion is preferably printed in a predetermined image shape, such as a picture, pattern, logo, or other design, or text, or a combination thereof, and formed on a portion of the image-bearing laminate. When the image-bearing portion is printed in a predetermined image shape, if the image resolution and clarity are reduced, the image quality will deteriorate significantly. However, by providing the anti-movement portion as described above, the image resolution and clarity can be prevented from being reduced, thereby appropriately suppressing the degradation of image quality.

[0078] The thickness T of the image bearing member 15 (see Figure 1 ) is not particularly limited, but is preferably 0.5 μm to 70 μm, more preferably 1 μm to 50 μm, and even more preferably 5 μm to 30 μm. When the thickness of the image-bearing portion is at least the lower limit, an image can be properly displayed on the image-bearing portion. Furthermore, when the thickness is at most the upper limit, large irregularities can be prevented from forming on the image-bearing laminate due to the image-bearing portion being formed only on a portion of the image-bearing laminate. Furthermore, excessive thickness of the image-bearing laminate can be prevented.

[0079] [Resin layer]

[0080] The image-bearing laminate of the present invention comprises at least one resin layer (first resin layer) as described above, but preferably comprises at least two resin layers (first resin layer and second resin layer). By comprising two resin layers, the image-bearing portion can be disposed between the pair of resin layers, making it easier to properly bond both surfaces of the image-bearing laminate to other components via the resin layers. Therefore, the image-bearing laminate can be suitably used as an interlayer film for laminated glass.

[0081] Each resin layer is preferably used as a base material layer for holding the above-mentioned image bearing portion. In addition, each resin layer is preferably used as an adhesive layer for bonding the image bearing laminate to other components such as glass components. Therefore, the first resin layer is preferably arranged on one surface of the image bearing laminate. In addition, when the second resin layer is provided, the second resin layer is preferably arranged on the other surface of the image bearing laminate (the surface on the opposite side of the above-mentioned one surface). Each resin layer can be appropriately used as an adhesive layer for bonding with other components by being arranged on the surface of the image bearing laminate.

[0082] The resin layer (the first resin layer, or the first resin layer and the second resin layer) is a layer containing a resin, and the resin in each resin layer is preferably a thermoplastic resin. When the resin layer contains a thermoplastic resin, it is easy to function as an adhesive layer, and the adhesion to the glass plate (glass member) becomes good.

[0083] The thermoplastic resin in each resin layer is not particularly limited, and examples thereof include polyvinyl acetal resin, ethylene-vinyl acetate copolymer resin, ionomer resin, polyurethane resin, thermoplastic elastomer, acrylic resin, acrylic-vinyl acetate copolymer resin, polyvinyl alcohol resin, polyolefin resin, polyvinyl acetate resin, and polystyrene resin. By using these resins, adhesion to the glass plate can be easily ensured.

[0084] In each resin layer of the present invention, the thermoplastic resin may be used alone or in combination of two or more.

[0085] Among the above, at least one selected from polyvinyl acetal resin and ethylene-vinyl acetate copolymer resin is preferred. In particular, when used in combination with a plasticizer, polyvinyl acetal resin is more preferred because it exhibits excellent adhesion to glass.

[0086] When a plurality of resin layers are provided, the resin constituting each resin layer may be appropriately selected from the resins listed above. In addition, the resins constituting each resin layer may be different from each other, but are preferably the same as each other.

[0087] When the first resin layer and the second resin layer are provided, the resin used for both the first resin layer and the second resin layer is preferably at least one selected from polyvinyl acetal resin and ethylene-vinyl acetate copolymer resin, and more preferably polyvinyl acetal resin.

[0088] (Polyvinyl acetal resin)

[0089] The polyvinyl acetal resin is not particularly limited as long as it is a polyvinyl acetal resin obtained by acetalizing polyvinyl alcohol (PVA) with aldehyde.

[0090] The aldehyde is not particularly limited, but generally, aldehydes having 1 to 10 carbon atoms are preferably used. Examples of the aldehyde having 1 to 10 carbon atoms include, butyraldehyde, isobutyraldehyde, n-valeraldehyde, 2-ethylbutyraldehyde, n-hexanal, n-octanal, n-nonanal, n-decanal, formaldehyde, acetaldehyde, and benzaldehyde. These aldehydes may be used alone or in combination of two or more.

[0091] Among the above, n-butyraldehyde, n-hexanal, and n-valeraldehyde are preferred, and n-butyraldehyde is more preferred. Therefore, the polyvinyl acetal resin is preferably a polyvinyl butyral resin.

[0092] Polyvinyl alcohol (PVA) is obtained by saponifying polyvinyl esters such as polyvinyl acetate, for example. The degree of saponification of polyvinyl alcohol is generally 70 to 99.9 mol%. Polyvinyl acetal resins may be used alone or in combination of two or more.

[0093] The average degree of polymerization of PVA is preferably 200 or higher, more preferably 500 or higher, even more preferably 1000 or higher, and even more preferably 1500 or higher. By setting the average degree of polymerization above the lower limit, the penetration resistance of the laminated glass is enhanced. Furthermore, the average degree of polymerization of PVA is preferably 5000 or lower, more preferably 4000 or lower, even more preferably 3500 or lower, and even more preferably 2500 or lower.

[0094] It should be noted that the average degree of polymerization of polyvinyl alcohol is determined according to JIS K6726 " (Polyvinyl alcohol test method)" method.

[0095] The hydroxyl content of the polyvinyl acetal resin is preferably 15 mol% or more, and preferably 38 mol% or less. By setting the hydroxyl content to 15 mol% or more, the adhesion is easily improved, and the penetration resistance of the laminated glass is easily improved. Furthermore, by setting the hydroxyl content to 38 mol% or less, the laminated glass is prevented from excessively hardening. From the perspective of adhesion to the glass sheet, the hydroxyl content is more preferably 20 mol% or more, and more preferably 25 mol% or more. Furthermore, the hydroxyl content is more preferably 35% or less, and more preferably 33 mol% or less.

[0096] When a polyvinyl butyral resin is used as the polyvinyl acetal resin, from the same viewpoint, the hydroxyl group content is 15 mol% or more, preferably 38 mol% or less, more preferably 20 mol% or more, further preferably 25 mol% or more, more preferably 35 mol% or less, and further preferably 33 mol% or less.

[0097] The hydroxyl content of the polyvinyl acetal resin is a value expressed as a percentage by dividing the molar fraction of the ethylene content of the hydroxyl groups by the total ethylene content of the main chain. The hydroxyl content of the ethylene content can be determined, for example, according to JIS K6728 " (Test method for polyvinyl butyral)".

[0098] The degree of acetalization of the polyvinyl acetal resin is preferably 47 mol% or more, and preferably 85 mol% or less. The degree of acetalization is more preferably 55 mol% or more, and further preferably 60 mol% or more, and further preferably 80 mol% or less, and further preferably 75 mol% or less.

[0099] In addition, the acetalization degree refers to the butyralization degree when the acetal group is a butyral group and the polyvinyl acetal resin (A) is a polyvinyl butyral resin.

[0100] The above-mentioned acetalization degree is a value expressed as a percentage, which is a molar fraction obtained by subtracting the amount of ethylene groups bonded to hydroxyl groups and the amount of ethylene groups bonded to acetyl groups from the total amount of ethylene groups in the main chain and dividing the value by the total amount of ethylene groups in the main chain. The acetalization degree (butyralization degree) is obtained, for example, by measuring the amount of ethylene groups bonded to hydroxyl groups and the amount of ethylene groups bonded to acetyl groups in accordance with JIS K6728. It is better to calculate the results using the method of "(Test method for polyvinyl butyral)".

[0101] The degree of acetylation of the polyvinyl acetal resin is preferably 30 mol% or less, more preferably 20 mol% or less, even more preferably 10 mol% or less, and even more preferably 2 mol% or less. When the degree of acetylation is below the upper limit, the moisture resistance of the image-bearing laminate and laminated glass is enhanced. The degree of acetylation is not particularly limited, but is preferably 0.01 mol% or more, and more preferably 0.1 mol% or more.

[0102] The above-mentioned acetylation degree is a value expressed as a percentage, which is a molar fraction obtained by dividing the amount of ethylene groups bonded to the acetyl group by the total amount of ethylene groups in the main chain. The above-mentioned amount of ethylene groups bonded to the acetyl group can be determined, for example, according to JIS K6728 " (Test method for polyvinyl butyral)".

[0103] (ethylene-vinyl acetate copolymer resin)

[0104] The ethylene-vinyl acetate copolymer resin may be a non-crosslinked ethylene-vinyl acetate copolymer resin or a high-temperature crosslinked ethylene-vinyl acetate copolymer resin. Furthermore, the ethylene-vinyl acetate copolymer resin may include a modified ethylene-vinyl acetate resin such as a saponified ethylene-vinyl acetate copolymer or a hydrolyzed ethylene-vinyl acetate copolymer.

[0105] Ethylene-vinyl acetate copolymer resin according to JIS K 6730" The vinyl acetate content measured in accordance with "Test Methods for Ethylene / Vinyl Acetate Resins" or JIS K 6924-2:1997 is preferably 10 to 50% by mass, more preferably 20 to 40% by mass. When the vinyl acetate content is at least these lower limits, the adhesion to glass is improved, and the penetration resistance of the laminated glass tends to be improved. Furthermore, when the vinyl acetate content is at most these upper limits, the breaking strength of the image-bearing laminate is increased, and the impact resistance of the laminated glass is improved.

[0106] (Plasticizer)

[0107] Each resin layer preferably contains a thermoplastic resin and further contains a plasticizer. That is, the first resin layer preferably contains a thermoplastic resin and a plasticizer. In addition, when a second resin layer is provided, the second resin layer also preferably contains a thermoplastic resin and a plasticizer.

[0108] The inclusion of a plasticizer makes the resin layer softer, resulting in a softer image-bearing laminate. Furthermore, when the image-bearing laminate is used as an interlayer film for laminated glass, the laminated glass exhibits improved softness and penetration resistance. Furthermore, it exhibits high adhesion to glass sheets.

[0109] Furthermore, if each resin layer (e.g., the first resin layer, or the first and second resin layers) contains a plasticizer, the constituent material is likely to migrate between the image carrier and the resin layer. However, in the present invention, by providing the migration prevention portion as described above, migration of the constituent material between the image carrier and the resin layer can be effectively suppressed. Therefore, when each resin layer (e.g., the first resin layer, or the first and second resin layers) contains a plasticizer, the effect of providing the migration prevention portion is more readily exhibited.

[0110] When using polyvinyl acetal resin as the thermoplastic resin, it is particularly effective if a plasticizer is included in each resin layer. Therefore, it is more preferable that the first resin layer contains polyvinyl acetal resin and a plasticizer. Furthermore, it is also more preferable that the second resin layer contains polyvinyl acetal resin and a plasticizer.

[0111] Examples of the plasticizer include organic ester plasticizers such as monobasic organic acid esters and polybasic organic acid esters, and phosphorus-based plasticizers such as organic phosphate plasticizers and organic phosphite plasticizers. Among them, organic ester plasticizers are preferred.

[0112] Examples of organic ester plasticizers include triethylene glycol di-2-ethylbutyrate, triethylene glycol di-2-ethylhexanoate, triethylene glycol dioctanoate, triethylene glycol di-n-octanoate, triethylene glycol di-n-heptanoate, tetraethylene glycol di-n-heptanoate, tetraethylene glycol di-2-ethylhexanoate, dibutyl sebacate, dioctyl azelate, dibutyl carbitol adipate, ethylene glycol di-2-ethylbutyrate, 1,3-propylene glycol di-2-ethylbutyrate, 1,4-butanediol di-2-ethylbutyrate, 1,2-butanediol di-2-ethylbutyrate, diethylene glycol di- adipate, diethylene glycol di-2-ethylbutyrate, diethylene glycol di-2-ethylhexanoate, dipropylene glycol di-2-ethylbutyrate, triethylene glycol di-2-ethylvalerate, tetraethylene glycol di-2-ethylbutyrate, diethylene glycol dicaprate, triethylene glycol di-n-heptanoate, tetraethylene glycol di-n-heptanoate, triethylene glycol di-2-ethylbutyrate, dihexyl adipate, dioctyl adipate, hexylcyclohexyl adipate, diisononyl adipate, heptylnonyl adipate, dibutyl sebacate, oil-modified sebacic acid, a mixture of a phosphate and an adipate, a mixed adipate, etc. Examples of mixed adipates include adipates made from two or more alcohols selected from alkyl alcohols having 4 to 9 carbon atoms and cyclic alcohols having 4 to 9 carbon atoms.

[0113] Among the above-mentioned plasticizers, triethylene glycol di-2-ethylhexanoate (3GO) is particularly suitable.

[0114] The content of the plasticizer in each of the resin layers (e.g., the first resin layer, or the first resin layer and the second resin layer) is not particularly limited, but is preferably 10 parts by mass or more and 100 parts by mass or less relative to 100 parts by mass of the thermoplastic resin. If the content of the plasticizer is 10 parts by mass or more, the image-bearing laminate becomes moderately soft. Therefore, if the image-bearing laminate is used as an intermediate film for laminated glass, the penetration resistance of the laminated glass becomes good. In addition, if the content of the plasticizer is 100 parts by mass or less, the plasticizer is prevented from separating from the resin layer. The content of the plasticizer is more preferably 20 parts by mass or more, further preferably 30 parts by mass or more, further preferably 35 parts by mass or more, and more preferably 70 parts by mass or less, further preferably 63 parts by mass or less.

[0115] The resin layers (e.g., the first resin layer, or the first resin layer and the second resin layer) each contain a resin, or a resin and a plasticizer, as their main components. The total amount of the thermoplastic resin and the plasticizer in each resin layer is generally 70% by mass or more and 100% by mass or less, preferably 80% by mass or more and 100% by mass or less, and more preferably 90% by mass or more and 100% by mass or less, based on the total amount of each resin layer. However, since each resin layer often contains additives as described below, the total amount of the thermoplastic resin and the plasticizer may be less than 100% by mass.

[0116] Each resin layer of the present invention may appropriately contain various additives such as a heat shielding agent, an ultraviolet absorber, an antioxidant, a light stabilizer, an ultraviolet absorber, and an antioxidant.

[0117] The thickness of each resin layer (the first resin layer, or the first resin layer and the second resin layer) is not particularly limited, but is, for example, 0.05 mm to 1 mm, preferably 0.1 mm to 0.8 mm, and more preferably 0.2 mm to 0.5 mm. By setting the thickness of each resin layer within the above range, the image-bearing portion can be appropriately supported by the resin layer without increasing the thickness of the image-bearing laminate excessively, and further, the image-bearing laminate can be easily bonded to other members such as a laminated glass member.

[0118] In addition, when the first resin layer and the second resin layer are provided, the image bearing member and the movement preventing member described later are arranged between the first resin layer and the second resin layer.

[0119] like Figure 3 、 56, the first resin layer 11 and the second resin layer 12 are preferably laminated via the movement preventing portion 20. In this case, it is more preferable that the image supporting portion 25 is enclosed in the movement preventing portion 20. By laminating the first resin layer and the second resin layer via the movement preventing portion enclosing the image supporting portion, it is possible to effectively prevent the constituent material of the image supporting portion from migrating to either the first resin layer or the second resin layer.

[0120] When the first resin layer and the second resin layer are stacked via the movement preventing portion, as shown in FIG. Figure 5 As shown, the entire first resin layer 11 and the second resin layer 12 can be laminated via the movement preventing portion 20 .

[0121] In addition, you can also Figure 3 As shown, a portion of the first resin layer 11 is laminated via the movement preventing portion 20, and a portion of the first resin layer 11 is directly laminated on the second resin layer 12. This configuration allows the size of the movement preventing portion to be reduced, making manufacturing easier. Furthermore, the small movement preventing portion can effectively prevent the constituent material of the image bearing portion from migrating to the first and second resin layers.

[0122] Furthermore, when the first resin layer and the second resin layer are stacked via the movement preventing portion, as shown in FIG. Figure 3 As shown, the second resin layer 12 is typically laminated on the second migration prevention layer 22, but may also be laminated as shown in FIG. Figure 6 As shown, a portion of the second resin layer 12 is directly laminated onto a portion of the first migration prevention layer 21. This configuration is preferably employed when, for example, the first migration prevention layer is made of a thermoplastic resin and laminated onto the entire first resin layer by lamination or the like. This configuration reduces the area required for printing and simplifies the manufacturing process.

[0123] [Movement prevention unit]

[0124] The image bearing laminate of the present invention has the movement preventing portion as described above. The movement preventing portion is a member that prevents the material constituting the image bearing portion from migrating to the resin layer, or the material constituting the resin layer from migrating to the image bearing portion.

[0125] The movement preventing portion can be formed from any component capable of inhibiting the movement of the constituent materials, but is preferably formed from a resin. The resin used in the movement preventing portion can be a curable resin such as a thermosetting resin or an active energy ray-curable resin, or a thermoplastic resin. Curable resins are preferred, with active energy ray-curable resins being more preferred and ultraviolet-curable resins being even more preferred. The use of a curable resin facilitates the inhibition of movement of the constituent materials of the resin layer and the image bearing portion. Furthermore, the use of an active energy ray-curable resin such as an ultraviolet-curable resin facilitates the formation of the movement preventing portion, allowing for easy formation by printing, for example.

[0126] When using an ultraviolet curable resin, the movement preventing portion is preferably formed by curing a resin composition comprising a polymerizable compound that can be cured by ultraviolet rays. As the polymerizable compound, an acrylate compound is preferred. The acrylate compound is a compound having a (meth)acryloyl group, and can be a monofunctional acrylate compound having one (meth)acryloyl group, or can comprise a multifunctional acrylate compound having at least two or more (meth)acryloyl groups. By using a multifunctional acrylate compound, it is easy to properly cure the movement preventing portion. In addition, the polymerizable compound also preferably comprises an acrylate compound containing a hydroxyl group such as hydroxyalkyl methacrylate represented by 2-hydroxypropyl methacrylate and 2-hydroxyethyl methacrylate.

[0127] The multifunctional acrylate compound may be a diacrylate compound having two (meth)acryloyl groups or a multifunctional acrylate compound having three or more (meth)acryloyl groups. However, the acrylate compound contained in the resin composition more preferably comprises a multifunctional acrylate compound having three or more (meth)acryloyl groups. Using a multifunctional acrylate compound having three or more (meth)acryloyl groups allows the migration prevention portion to be a crosslinked structure having a three-dimensional network structure, thereby increasing mechanical strength and making it easier to appropriately prevent migration of the constituent materials of the resin layer and the image supporting portion.

[0128] When the movement preventing portion is formed of a resin composition containing a polymerizable compound that can be cured by ultraviolet light, the resin composition preferably contains a photopolymerization initiator. In addition to the photopolymerization initiator, an antioxidant, a filler, etc. may also be appropriately contained. Furthermore, the resin composition may be diluted with an organic solvent, etc.

[0129] Examples of thermoplastic resins used in the movement prevention portion include polyester resins and acrylic resins. The acrylic resin is preferably an acrylic polymer containing a structural unit derived from a (meth)acrylate containing a hydroxyl group, specifically, polyhydroxypropyl methacrylate (HPMA resin) and polyhydroxyethyl methacrylate (HEMA resin).

[0130] Preferred thermoplastic resins include polyethylene terephthalate, polyhydroxypropyl methacrylate, and polyhydroxyethyl methacrylate, and polyethylene terephthalate (PET) is preferred. Polyethylene terephthalate may be modified PET, and cyclohexanedimethylene-modified PET (PETG) is preferred.

[0131] In the movement preventing portion, the thermoplastic resin may be used alone or in combination of two or more.

[0132] When a thermoplastic resin is used as the resin, the movement preventing portion may be formed of the resin alone, but may be mixed with additives as long as the function thereof is not impaired. Examples of the additives include antioxidants, light stabilizers, fluorescent whitening agents, and crystallization nucleating agents.

[0133] In addition, thermoplastic resins may be blended with plasticizers to ensure flexibility, as described above for the resin layer. However, the migration preventing portion preferably contains substantially no plasticizer. Plasticizers generally facilitate the movement of constituent materials, and since the migration preventing portion contains substantially no plasticizer, it is easier for the migration preventing portion to function as the migration preventing portion.

[0134] It should be noted that the term "substantially free of plasticizer" means that a plasticizer may be present in an amount that does not impair the function of the movement preventing portion. For example, the plasticizer may be present unintentionally and inevitably mixed in. The content of the plasticizer in the movement preventing portion is preferably less than 2 parts by mass, preferably less than 1 part by mass, more preferably less than 0.5 parts by mass, and most preferably 0 parts by mass, relative to 100 parts by mass of the resin.

[0135] The movement preventing portion preferably contains substantially no dye, and more preferably contains substantially no colorant. Here, "substantially no dye or colorant" means that the movement preventing portion may contain a dye or colorant in an amount sufficient to prevent the movement preventing portion from being colored. For example, the movement preventing portion may contain a dye or colorant that has been unintentionally and inevitably mixed in. By containing substantially no dye or colorant, the image bearing portion can achieve even better clarity and resolution.

[0136] Therefore, the concentration of the dye in the migration prevention portion may be, for example, less than 0.001 mass % or less than 0.0001 mass %, but is preferably 0 mass %. The same applies to the concentration of the colorant.

[0137] The method of forming the movement prevention portion varies depending on the material it is made of and the position at which it is arranged. It may be formed by various coating methods such as printing or by lamination.

[0138] In the present invention, the movement preventing portion has at least a first movement preventing layer. Figures 1 to 6 As shown, the first migration prevention layer 21 is located between the image carrier 15 and the first resin layer 11 and prevents migration of the materials constituting the image carrier 15 and the first resin layer 11. The migration prevention layer prevents migration of materials constituting the image carrier 15 to the first resin layer, and vice versa. This prevents degradation of the clarity and resolution of the image carried on the image carrier, even during long-term use, and suppresses image bleeding.

[0139] The first movement preventing layer is preferably formed on one surface of the first resin layer. The first movement preventing layer may be provided over the entire area of ​​one surface of the first resin layer, or may be provided partially. However, the first movement preventing layer is preferably formed at least in a larger size than the image bearing portion. When viewed hypothetically along the thickness direction, the image bearing portion is preferably positioned in the region where the first movement preventing portion is located, and preferably positioned inside the contour of the first movement preventing portion. By configuring the first movement preventing layer in the above manner, the movement of the constituent material between the first resin layer and the image bearing portion can be effectively suppressed.

[0140] As described above, the image supporting member is preferably formed in a predetermined shape according to the image. In this case, the first migration preventing layer may have a shape similar to the predetermined shape but slightly larger, or may not have a shape similar to the predetermined shape.

[0141] The resin constituting the first migration prevention layer may be a curable resin such as a thermosetting resin or an active energy ray curable resin, or a thermoplastic resin. Among these, active energy ray curable resins are more preferred, and ultraviolet curable resins are even more preferred. The details of the thermoplastic resin, ultraviolet curable resin, etc. are as described above.

[0142] The first migration preventing layer can be formed by various coating methods such as printing, lamination methods, etc., but is preferably formed by printing regardless of whether the first migration preventing layer is provided partially on one surface of the first resin layer or provided on the entire surface. Furthermore, when the first migration preventing layer is provided partially, it is particularly preferably formed by printing.

[0143] Furthermore, when the first migration prevention layer is formed by printing, a curable resin is preferably used, and a UV-curable resin is more preferably used. Therefore, the first migration prevention layer is preferably a printed layer formed by curing a resin composition containing a UV-curable resin. In this case, the first migration prevention layer is preferably cured by applying the resin composition to the first resin layer, drying it as needed, and then irradiating it with ultraviolet light.

[0144] If the first migration preventing layer is a printed layer, it is easy to form the first migration preventing layer of an appropriate size according to the shape of the image supporting portion. In addition, by making both the image supporting portion and the first migration preventing layer a printed layer, the production becomes easy.

[0145] When a thermoplastic resin is used as the resin constituting the first migration preventing layer, the first migration preventing layer is preferably formed by a lamination method. More specifically, the first migration preventing layer can be formed by laminating a thermoplastic resin on the first resin layer by extrusion molding, or by laminating a thermoplastic resin previously formed into a film on the first resin layer by compression molding, or by other known lamination methods. In addition, in the lamination method, the first migration preventing layer can be formed by a co-extrusion method by extrusion molding together with the first resin layer.

[0146] The lamination method is suitable for forming the first migration prevention layer on the entire surface of one side of the first resin layer. Therefore, when the resin constituting the first migration prevention layer is a thermoplastic resin, the first migration prevention layer is preferably provided on the entire surface of one side of the first resin layer.

[0147] However, the first migration prevention layer is not limited to the above-described one. The first resin layer may be subjected to an appropriate surface treatment, and the surface-treated portion is considered to be the first migration prevention layer. The surface treatment may be any treatment as long as the surface treatment can prevent the migration of the constituent materials of the image supporting member and the first resin layer from each other more effectively than before the treatment. Examples of the surface treatment include plasma treatment and ozone treatment.

[0148] The thickness of the first migration prevention layer can be, for example, approximately 0.5 μm to 300 μm. By keeping the thickness of the first migration prevention layer at or above the lower limit, the first migration prevention layer can easily function as a migration prevention layer. Furthermore, by keeping the thickness at or below the upper limit, the image-bearing laminate can be prevented from becoming excessively thick.

[0149] The thickness of the first migration prevention layer is preferably 0.5 μm or more and 100 μm or less, more preferably 1 μm or more and 50 μm or less, and further preferably 5 μm or more and 30 μm or less. The first migration prevention layer is more likely to function as a migration prevention layer by having a thickness of at least a certain value. In addition, by having a thickness below the upper limit, it is possible, for example, as described later, to Figures 1 to 5 As shown, this is an appropriate thickness for the printed layer.

[0150] It should be noted that the thickness of the so-called first migration prevention layer is, for example, Figure 2 As shown, the thickness T1 of the first migration prevention layer 21 in the portion where the image supporting member 15 is provided can be calculated by taking an average value such as a 10-point average.

[0151] However, the first migration prevention layer is as described in the sixth embodiment (see Figure 6 ), and in the case where a thermoplastic resin is used as the resin, and in the case where the first resin layer is laminated on the entire surface of one side, the first resin layer may be thicker, preferably 15 μm or more and 300 μm or less, more preferably 20 μm or more and 200 μm or less, and further preferably 30 μm or more and 150 μm or less. The first migration prevention layer having the above thickness range can be easily formed by a lamination method and can be suitably applied to the sixth embodiment described later (see Figure 6 ) in the first migration preventing layer 21. In addition, the first migration preventing layer is thick as described above, and thus also functions as a base layer, and also becomes a member that supports the image bearing portion together with the first resin layer.

[0152] Furthermore, the ratio (T1:T) of the thickness T1 of the first migration prevention layer to the thickness T of the image supporting member is preferably 1:200 to 200:1. Within this range, the first migration prevention layer can appropriately prevent the migration of the constituent materials of the image supporting member and the first resin layer, while also allowing the image to be properly displayed on the image supporting member. The ratio (T1:T) is more preferably 1:100 to 100:1, even more preferably 1:10 to 10:1, and even more preferably 1:3 to 3:1.

[0153] The movement preventing portion of the present invention is preferably as follows Figures 2 to 6 As shown, in addition to the first migration preventing layer 21 , the second migration preventing layer 22 is provided on the surface of the image supporting member 15 opposite to the surface on which the first migration preventing layer 21 is provided.

[0154] When the second migration prevention layer is provided, it is preferable to Figure 3 、 56, a second resin layer 12 is also provided, and the second migration preventing layer 22 is preferably a layer located between the image supporting member 15 and the second resin layer 12. Furthermore, the second migration preventing layer is preferably a layer that prevents migration of the constituent materials of the image supporting member and the second resin layer.

[0155] The migration prevention portion includes a second migration prevention layer, thereby preventing the material constituting the image carrier from migrating to another layer, such as the second resin layer, or vice versa. Therefore, when the second resin layer is provided in addition to the first resin layer, the image carried on the image carrier can be effectively prevented from losing clarity and resolution even after long-term use, thereby suppressing image bleeding.

[0156] In addition, the movement prevention part is also preferably as follows Figures 2 to 6 As shown, an outer peripheral movement prevention portion 23 is provided on the outer peripheral side of the image carrier 15. The outer peripheral movement prevention portion is preferably provided so as to be in contact with the outer peripheral surface of the image carrier. The outer peripheral movement prevention portion prevents the constituent materials of the image carrier from migrating from the outer peripheral surface to the outside. Furthermore, the outer peripheral side constituent materials of the resin layer, etc., are prevented from migrating from the outer peripheral surface to the image carrier, thereby more effectively suppressing a reduction in image resolution and clarity.

[0157] The outer periphery movement prevention portion is preferably provided over the entire periphery so as to surround the image bearing portion. With such a configuration, it is possible to more effectively prevent the constituent material of the image bearing portion from moving from the outer periphery to the outside.

[0158] Alternatively, a resin layer may be disposed further peripherally of the outer peripheral movement preventing portion. In this case, the outer peripheral resin layer may be either the first resin layer or the second resin layer, but is preferably the second resin layer. Furthermore, the resin layer disposed on the outer peripheral side of the outer peripheral movement preventing portion is preferably disposed so as to contact the outer peripheral surface of the outer peripheral movement preventing portion. Furthermore, the resin layer disposed on the outer peripheral side of the outer peripheral movement preventing portion is preferably provided over the entire circumference of the image bearing portion so as to surround the outer peripheral movement preventing portion.

[0159] The second movement preventing layer may be formed on the image supporting portion formed on the first movement preventing layer. The peripheral movement preventing portion may be formed on the first movement preventing layer so as to be in close contact with the peripheral surface of the image supporting portion.

[0160] The second anti-movement layer and the outer peripheral anti-movement portion are preferably both formed by a coating method such as printing, and are preferably formed integrally so as to span the first anti-movement layer and the image bearing portion. Furthermore, the second anti-movement layer and the outer peripheral anti-movement portion are preferably formed simultaneously in the same printing process.

[0161] The resin constituting the second migration prevention layer and the peripheral migration prevention portion may be a curable resin such as a thermosetting resin or an active energy ray curable resin, or may be a thermoplastic resin, but is preferably a curable resin, more preferably an ultraviolet curable resin. The details of the thermoplastic resin and the curable resin are as described above.

[0162] Furthermore, the second migration preventing layer and the outer peripheral migration preventing portion are preferably printed layers formed by curing a resin composition containing an ultraviolet curable resin, similarly to the first migration preventing layer.

[0163] It should be noted that the materials used for the first movement preventing layer, the second movement preventing layer, and the outer peripheral movement preventing portion may be the same as or different from each other.

[0164] In the present invention, the first movement preventing layer, the second movement preventing layer and the outer peripheral movement preventing portion may be integrated to form the movement preventing portion. It is preferred that such a structure be used so that Figures 2 to 6 As shown in FIG, the image carrier 15 is enclosed in the movement preventing portion 20. Enclosing the image carrier in the movement preventing portion prevents the constituent materials of the image carrier from leaking out, thereby improving the resolution and clarity of the image on the image carrier.

[0165] The thickness of the second migration prevention layer is preferably 0.5 μm or more and 100 μm or less, more preferably 1 μm or more and 50 μm or less, and even more preferably 5 μm or more and 30 μm or less. The second migration prevention layer can more easily function as a migration prevention layer by having a thickness of at least a certain value. In addition, by having a thickness below the above lower limit, it can be Figures 2 to 6 As shown, this is an appropriate thickness for the printed layer.

[0166] It should be noted that the thickness of the second migration prevention layer is as follows: Figure 2 As shown, the thickness T2 of the second migration prevention layer in the portion where the image supporting member is provided can be calculated by taking an average value such as a 10-point average.

[0167] In addition, the thickness of the peripheral movement prevention portion is preferably 0.5 μm or more and 100 μm or less, more preferably 1 μm or more and 50 μm or less, and further preferably 5 μm or more and 30 μm or less. The peripheral movement prevention portion is easier to function as a peripheral movement prevention portion by having a thickness of more than a certain value. In addition, by having a thickness below the above lower limit, it is possible to Figures 2 to 6 As shown, this is an appropriate thickness for the printed layer.

[0168] The thickness of the outer peripheral movement prevention portion is preferably greater than or equal to the thickness of the image carrier. By setting such a thickness, the movement of the constituent material on the outer peripheral surface of the image carrier can be appropriately prevented.

[0169] It should be noted that the thickness of the peripheral movement prevention layer is as follows: Figure 2 As shown, this is the thickness T3 of the outer peripheral movement preventing layer 23 on the outer periphery of the portion where the image carrier 15 is provided. Since the outer peripheral movement preventing layer is typically formed on the first movement preventing layer on the outer periphery of the image carrier, thickness T3 is the thickness of the outer peripheral movement preventing layer 20 minus the thickness T1 of the first movement preventing layer on the outer periphery of the image carrier. Note that thickness T3 of the outer peripheral movement preventing layer can be calculated using a 10-point average.

[0170] The combined thickness of the movement preventing portion and the image supporting portion is preferably, for example, 1 μm or more and 400 μm or less. When the combined thickness of the movement preventing portion and the image supporting portion is at least the lower limit, the movement preventing portion can function more effectively. Furthermore, when the combined thickness is at most the upper limit, the image supporting laminate can be prevented from becoming excessively thick.

[0171] Furthermore, the combined thickness of the movement prevention portion and the image bearing portion is preferably 1 μm or more and 200 μm or less, more preferably 2 μm or more and 100 μm or less, and even more preferably 10 μm or more and 60 μm or less. The movement prevention portion can more easily function as a movement prevention portion by having a thickness greater than a certain value. Furthermore, by having a thickness less than the above lower limit, it can be Figures 2 to 5 As shown, when formed by printing, it becomes an appropriate thickness.

[0172] It should be noted that the combined thickness of the movement preventing portion and the image supporting portion in this specification refers to the thickness of the entire movement preventing portion, including the image supporting portion, in the region where the image supporting portion is provided. When both the first and second movement preventing layers are provided, the combined thickness is equal to the combined thickness T1 of the first movement preventing layer, the thickness T2 of the second movement preventing layer, and the thickness T of the image supporting portion. Furthermore, when only the first movement preventing layer is provided, the combined thickness is equal to the combined thickness T1 of the first movement preventing layer and the thickness T of the image supporting portion.

[0173] The thickness of the image-bearing laminate is not particularly limited, but is, for example, 0.3 mm to 2 mm, preferably 0.4 mm to 1.5 mm, and more preferably 0.5 mm to 1.2 mm. It should be noted that by keeping the thickness of the image-bearing laminate below the upper limit, the image-bearing laminate does not become excessively thick, and can be suitably used in applications such as interlayer films for laminated glass. Furthermore, by keeping the thickness above the lower limit, each layer can have an appropriate thickness.

[0174] <Layer composition>

[0175] Hereinafter, the layer structure of the image bearing laminate of the present invention will be described in more detail with reference to the drawings. Figure 1 The image bearing laminate according to the first embodiment of the present invention is shown.

[0176] The image carrying laminate 10A according to the first embodiment includes an image carrying portion 15, a resin layer, and a movement preventing portion 20. The resin layer of the image carrying laminate 10A is composed of a single layer and includes a first resin layer 11 as the resin layer.

[0177] Furthermore, the movement preventing portion 20 is composed of a first movement preventing layer 21. The first movement preventing layer 21 is formed on one surface of the first resin layer 11. In this embodiment, the first movement preventing layer 21 is preferably a printed layer. Figure 1 As shown, it is provided on a portion of one surface of the first resin layer 11, but preferably has a size larger than the image carrier 15. However, in this embodiment, the first migration prevention layer 21 may be provided on the entire surface of the first resin layer 11.

[0178] The image supporting portion 15 is further formed on the first migration preventing layer 21. The first migration preventing layer 21 is located between the image supporting portion 15 and the first resin layer 11, and prevents the constituent materials of the image supporting portion 15 and the first resin layer 11 from shifting relative to each other. The image supporting portion 15 is preferably formed inward of the outline of the first migration preventing layer 21. As described above, the image supporting portion 15 is more preferably a printed layer in this embodiment. That is, both the image supporting portion 15 and the first migration preventing layer 21 are preferably printed layers.

[0179] In this embodiment, the details of the first resin layer 11, the image supporting member 15, and the first migration preventing layer 21 are as described above. However, it is preferred that the image supporting member 15 be formed of an ultraviolet curable ink and the first migration preventing layer 21 be formed of a resin composition containing an ultraviolet curable resin.

[0180] Figure 2The image-bearing laminate according to the second embodiment of the present invention is shown. The image-bearing laminate 10B according to the second embodiment includes an image-bearing portion 15, a resin layer, and a movement-preventing portion 20. In the second embodiment, the movement-preventing portion 20 includes a second movement-preventing layer 22 and a peripheral movement-preventing portion 23 in addition to the first movement-preventing layer 21. Except for this point, the second embodiment is the same as the first embodiment, and descriptions of components having the same configuration as the first embodiment will be omitted.

[0181] The second migration preventing layer 22 is further formed on the image supporting portion 15 formed on the first migration preventing layer 21. The image supporting laminate 10B of this embodiment can prevent the constituent material of the image supporting portion 15 from seeping out from the side opposite to the surface side where the first resin layer 11 is provided by providing the second migration preventing layer 22.

[0182] Therefore, for example, as described later, in the case where an additional resin layer is additionally overlapped on the surface of the image-bearing laminate 10B opposite to the surface side on which the first resin layer 11 is provided, the second movement preventing portion 22 is located between the additional resin layer and the image-bearing portion 15, thereby preventing the movement of the constituent materials of the image-bearing portion 15 and the additional resin layer from each other.

[0183] The outer peripheral movement preventing portion 23 is located on the outer peripheral side of the image supporting portion 15, and its details are as described above. In this embodiment, the outer peripheral movement preventing portion 23 is partially provided on one surface of the first resin layer 11 corresponding to the area where the first movement preventing layer 21 is provided. As a result, the movement preventing portion 21 is partially provided on one surface of the first resin layer 11.

[0184] In this embodiment, it is more preferable that the first anti-movement layer 21, the second anti-movement layer 22, and the peripheral anti-movement portion 23 are all printed layers. Therefore, it is further preferable that the image supporting member 15, the first anti-movement layer 21, the second anti-movement layer 22, and the peripheral anti-movement portion 23 are all printed layers.

[0185] In this embodiment, the first movement preventing layer 21 , the second movement preventing layer 22 , and the outer peripheral movement preventing portion 23 may be integrated to form the movement preventing portion 20 . With this configuration, the image supporting portion 15 is enclosed in the movement preventing portion 20 .

[0186] Figure 3 The following illustrates an image-bearing laminate according to a third embodiment of the present invention. An image-bearing laminate 10C according to the third embodiment includes an image-bearing portion 15, a resin layer, and a movement-preventing portion 20. Furthermore, the image-bearing portion 15, the movement-preventing portion 20, and the first resin layer 11 are provided as a second resin layer 12. The image-bearing portion 15, the movement-preventing portion 20, and the first resin layer 11 are similar to those of the second embodiment, and their description is omitted.

[0187] The second resin layer 12 is provided on the surface of the image-bearing laminate 10C opposite to the surface on which the first resin layer 11 is provided, and the image-bearing portion 15 and the movement-preventing portion 20 are arranged between the first resin layer 11 and the second resin layer 12. Therefore, the second movement-preventing layer 22 is located between the image-bearing portion 15 and the second resin layer 12, and prevents the constituent materials of the image-bearing portion 15 and the second resin layer 12 from moving relative to each other.

[0188] Here, the movement preventing portion 20 including the image supporting portion 15 is partially provided on one surface of the first resin layer 11 , and a portion of the one surface of the first resin layer 11 is not provided with both the image supporting portion 15 and the movement preventing portion 20 .

[0189] Therefore, the first resin layer 11 and the second resin layer 12 are Figure 3 As shown, the layers are partially stacked via the movement preventing portion 20 that encloses the image bearing portion 15 , and are directly stacked on each other in other portions.

[0190] Figure 4 An image bearing laminate according to a fourth embodiment of the present invention is shown.

[0191] The image carrying laminate 10D according to the fourth embodiment includes an image carrying portion 15, a resin layer, and a movement preventing portion 20. In this embodiment, the movement preventing portion 20 includes a first movement preventing layer 21, a second movement preventing layer 22, and an outer peripheral movement preventing portion 23, similarly to the second embodiment.

[0192] In this embodiment, the first anti-movement layer 21 is provided over the entire area of ​​one surface of the first resin layer 11. Specifically, the first anti-movement layer 21 is provided up to the outer edge 11X of the first resin layer 11, and accordingly, the outer peripheral anti-movement portion 23 is also provided up to the outer edge 11X of the first resin layer 11. The remaining configuration is the same as that of the second embodiment, and therefore its description will be omitted.

[0193] Figure 5 The following illustrates an image-bearing laminate according to a fifth embodiment of the present invention. An image-bearing laminate 10E according to the fifth embodiment includes an image-bearing portion 15, a resin layer, and a movement-preventing portion 20. Furthermore, the image-bearing laminate 10E includes a second resin layer 12 in addition to the first resin layer 11. The image-bearing portion 15, the movement-preventing portion 20, and the first resin layer 11 are similar to those of the fourth embodiment, and their description is omitted.

[0194] The second resin layer 12 is provided on the surface of the image-bearing laminate 10E opposite to the surface on which the first resin layer 11 is provided, and the image-bearing portion 15 and the movement-preventing portion 20 are arranged between the first resin layer 11 and the second resin layer 12. Thus, the second movement-preventing layer 22 is located between the image-bearing portion 15 and the second resin layer 12, and prevents the constituent materials of the image-bearing portion 15 and the second resin layer 12 from moving relative to each other.

[0195] Furthermore, the movement prevention portion 20 containing the image bearing portion 15 is provided over the entire area on one surface of the first resin layer 11. Therefore, the first resin layer 11 and the second resin layer 12 are Figure 5 As shown, the entire structure is laminated via the movement prevention portion 20 that encloses the image supporting portion 15 .

[0196] Figure 6 An image bearing laminate according to a sixth embodiment of the present invention is shown.

[0197] The image-carrying laminate 10F according to the sixth embodiment includes an image-carrying portion 15, a resin layer, and a movement-preventing portion 20. In this embodiment, as in the third embodiment, the movement-preventing portion 20 includes a first movement-preventing layer 21, a second movement-preventing layer 22, and a peripheral movement-preventing portion 23. The first resin layer 11 and the second resin layer 12 are provided as resin layers, and their details are omitted.

[0198] However, in this embodiment, the first migration prevention layer 21 preferably uses a thermoplastic resin as the resin and is preferably formed by lamination. In addition, the first migration prevention layer 21 is provided over the entire area of ​​one surface of the first resin layer 11 and is provided up to the outer edge 11X of the first resin layer 11.

[0199] On the other hand, the outer peripheral movement preventing portion 23 is partially provided on one surface of the first movement preventing layer 21 , and the first movement preventing layer 21 has an area where the second movement preventing layer 22 and the outer peripheral movement preventing portion 23 are not provided.

[0200] Therefore, in this embodiment, a portion of the second resin layer 12 is directly laminated on a portion of the first migration preventing layer 21. Alternatively, the remaining portion of the second resin layer 12 is not directly laminated on the first migration preventing layer 21, but is preferably laminated on the first migration preventing layer 21 via the second migration preventing layer 22 and the image supporting member 15 or the peripheral migration preventing member 23.

[0201] In addition, in this embodiment, the second resin layer 12 is provided. However, as in the second and third embodiments, the second resin layer 12 may not be provided. Even if the second resin layer is not provided, in a subsequent step, an additional resin layer is superimposed on the side of the image-bearing laminate 10F opposite to the surface on which the first resin layer 11 is provided, as described later. This allows the second movement prevention portion 22 to be located between the additional resin layer and the image-bearing portion 15. This prevents the constituent materials of the image-bearing portion 15 and the additional resin layer from moving relative to each other.

[0202] It should be noted that in Figures 2 to 6 The movement preventing portion 20 is located at a position where the image bearing portion 15 is provided and a position where the peripheral movement preventing portion 23 is provided, and the height position (ie, Figures 2 to 6 The positions of the upper surfaces of the movement preventing portions 20 in the image carrier 15 are all shown identically. However, in the case where the peripheral movement preventing portion 23 is formed by the same printing process as the second movement preventing layer 22, it is better to set the height position of the position where the peripheral movement preventing portion 23 is set to be lower than the height position of the position where the second movement preventing layer 22 is set on the image carrier 15. The reason is that if the peripheral movement preventing portion 23 and the second movement preventing layer 22 are formed in the same printing process, the thickness T3 of the peripheral movement preventing portion 23 is substantially the same as the thickness T2 of the second movement preventing layer 22, and therefore the height position of the peripheral movement preventing portion 23 is lower than the height position of the second movement preventing layer 22 by the thickness of the image carrier 15.

[0203] Furthermore, the above-described respective laminate structures are embodiments of the image-bearing laminate, but the present invention is not limited to the laminate structures of the above-described embodiments.

[0204] <Method for Manufacturing Image-Carrying Laminate>

[0205] The method for manufacturing the image-bearing laminate of the present invention is not particularly limited. First, a first migration preventing layer may be formed on one surface of the first resin layer. The method for forming the first migration preventing layer is not particularly limited; as described above, it may be formed by any coating method such as printing or lamination. Furthermore, the first migration preventing layer may be provided partially on one surface of the first resin layer or may be provided entirely on one surface.

[0206] Next, an image bearing portion is further formed on the first migration preventing layer. The method for forming the image bearing portion is preferably printing, and the details thereof are as described above. By forming the first migration preventing layer and the image bearing portion on the first resin layer as described above, an image bearing laminate 10A according to the first embodiment can be obtained (see Figure 1 ).

[0207] The image-bearing laminate of the present invention preferably further comprises a second anti-movement layer and a peripheral anti-movement portion in addition to the first resin layer, the first anti-movement layer, and the image-bearing portion. Therefore, in the present manufacturing method, after forming the image-bearing portion as described above, the second anti-movement layer is preferably formed on the image-bearing portion. Furthermore, it is more preferred that the peripheral anti-movement portion be formed on the outer periphery of the image-bearing portion in addition to the second anti-movement layer.

[0208] As described above, the second movement preventing layer and the peripheral movement preventing portion are preferably formed by printing. Furthermore, the second movement preventing layer and the peripheral movement preventing portion are more preferably formed by the same printing process. Therefore, the resin composition, etc., used to form the second movement preventing layer and the peripheral movement preventing portion is preferably printed not only on the area where the image bearing portion is provided but also on the area of ​​the first movement preventing layer where the image bearing portion is not provided, thereby forming the second movement preventing layer on the image bearing portion and simultaneously forming the peripheral movement preventing portion on the first movement preventing layer.

[0209] Through the above steps, for example, the second embodiment and the fourth embodiment ( Figure 2 、 4 ) relates to an image-bearing laminate.

[0210] The image-bearing laminate of the present invention preferably further comprises a second resin layer in addition to the first resin layer, first anti-movement layer, image-bearing portion, second anti-movement layer, and peripheral anti-movement portion described above. Therefore, the present manufacturing method preferably includes a step of forming the second resin layer. Specifically, the second resin layer is preferably further laminated on the second anti-movement layer and peripheral anti-movement portion formed as described above. By laminating the second resin layer, the image-bearing laminate according to the third, fifth, and sixth embodiments can be obtained.

[0211] The lamination method of the 2nd resin layer is not particularly limited, as long as adopt known method, as long as adopt lamination method.In lamination method, thermoplastic resin can be formed by extrusion molding lamination on the surface of the laminated body that has formed the 2nd movement prevention layer and periphery movement prevention portion.In addition, the thermoplastic resin that can be made into film-like in advance can be formed by lamination on the surface of above-mentioned laminated body such as compression molding, also can adopt other known lamination methods.

[0212] The surface of the laminate forming the second movement prevention layer and the peripheral movement prevention portion sometimes has projections and depressions due to the provision of the image bearing portion. However, if the second resin layer is laminated by a lamination method, even if the second resin layer is laminated on the surface of the laminate having projections and depressions, the second resin layer follows the projections and depressions and is in close contact with the surface of the laminate, so that the second resin layer can be laminated appropriately.

[0213] Therefore, for example, in the third embodiment (see Figure 3 ) can make the second resin layer 12 closely adhere to the first resin layer 11, the peripheral movement prevention portion 23 and the second movement prevention layer 22 without a gap. In addition, for example, in the sixth embodiment (refer to Figure 6 ) can make the second resin layer 12 closely adhere to the first movement preventing layer 21, the peripheral movement preventing portion 23 and the second movement preventing layer 22 without any gap. Figure 5 ), the second resin layer 12 may be closely attached to the second movement preventing layer 22 and the outer peripheral movement preventing portion 23 without a gap.

[0214] In this manufacturing method, at least a portion of the movement preventing portion and the image carrying portion are preferably formed by printing. Forming the image carrying portion by printing facilitates the expression of images having various shapes on the image carrying portion, thereby easily obtaining an image carrying laminate with high design properties. Furthermore, by forming not only the image carrying portion but also at least a portion of the movement preventing portion by printing, the movement preventing portion can be easily processed into a desired shape corresponding to the shape of the image carrying portion, further enabling efficient production of the image carrying laminate.

[0215] The printing method for forming the movement preventing portion and the image bearing portion is not particularly limited, and examples thereof include screen printing, inkjet printing, flexographic printing, and offset printing. Among these, screen printing and inkjet printing are preferred.

[0216] Furthermore, the printing methods used when forming the movement preventing portion and the image bearing portion may be the same or different. For example, both the movement preventing portion and the image bearing portion may be formed by screen printing or inkjet printing, or one of the movement preventing portion and the image bearing portion may be formed by screen printing and the other by inkjet printing.

[0217] Here, the movement prevention portion is preferably formed by printing at least one of the first movement prevention layer, the second movement prevention layer, and the peripheral movement prevention portion, but as shown in the first embodiment, when the second movement prevention layer and the peripheral movement prevention portion are omitted, it is better that the first movement prevention layer is formed by printing.

[0218] Furthermore, when a first movement preventing layer, a second movement preventing layer, and a peripheral movement preventing portion are provided as shown in the second to sixth embodiments, the first movement preventing layer can be formed by printing, and the second movement preventing layer and the peripheral movement preventing portion can be formed by printing. However, it is preferred that at least the second movement preventing layer and the peripheral movement preventing portion are formed by printing. Furthermore, it is further preferred that all of the first movement preventing layer, the second movement preventing layer, and the peripheral movement preventing portion are formed by printing.

[0219] In addition, the first migration prevention layer may not be formed by printing. In this case, it is preferably formed by the lamination method as described above.

[0220] How to use the image-bearing laminate

[0221] The image-bearing laminate of the present invention can be used in various applications, but is preferably used as an adhesive sheet for bonding to other members via the first resin layer, or the first resin layer and the second resin layer. Here, the other member to which the image-bearing laminate of the present invention is bonded is preferably a glass member. The glass member is preferably a glass plate. Specific examples of the glass plate are the same as those used in the laminated glass member described below.

[0222] [Interlayer film for laminated glass]

[0223] The image-bearing laminate of the present invention is preferably used as an interlayer film for laminated glass. The image-bearing laminate of the present invention can be used as an interlayer film for laminated glass as it is, or can be used as an interlayer film for laminated glass after additionally laminating a resin layer (also referred to as an "additional resin layer").

[0224] That is, the present invention provides an interlayer film for laminated glass having an image-bearing laminate. The interlayer film for laminated glass may be composed of the image-bearing laminate and may further have other layers such as an additional resin layer in addition to the image-bearing laminate.

[0225] In addition, since the structure of the additional resin layer is the same as the structure of the resin layer described above, the description thereof is omitted.

[0226] The image-bearing laminate can be used as long as the resin layer serves as an adhesive layer for bonding to other members. Therefore, when the image-bearing laminate comprises a first resin layer and a second resin layer as the resin layers, it can be used directly as an interlayer film for laminated glass. Specifically, by placing the image-bearing laminate between a pair of laminated glass members, with the first resin layer bonded to one laminated glass member and the second resin layer bonded to the other laminated glass member, the two laminated glass members can be joined via the image-bearing laminate.

[0227] However, even when the image-bearing laminate comprises a first resin layer and a second resin layer, a laminate in which an additional resin layer is appropriately laminated can be used as an interlayer film for laminated glass. For example, a laminate in which an additional resin layer is laminated further outside one or both of the first and second resin layers can be used as an interlayer film for laminated glass.

[0228] On the other hand, when the image-bearing laminate has only one resin layer (first resin layer) as the resin layer, it is preferable to appropriately laminate an additional resin layer and use the laminate with the additional resin layer as an interlayer for laminated glass. In this case, it is preferable that the additional resin layer is laminated on the side opposite to the side where the first resin layer is provided in the image-bearing laminate. Specifically, in the first embodiment ( Figure 1 ), it only needs to be laminated on the image supporting portion 15, and in the second embodiment and the fourth embodiment, it only needs to be laminated on the second migration preventing layer 22.

[0229] However, even when the image-bearing laminate has only one resin layer (first resin layer) as the resin layer, the image-bearing laminate may be used directly as an interlayer film for laminated glass without laminating an additional resin layer. In this case, for example, as in the first embodiment and the second embodiment ( Figure 1 、 2 ), the movement preventing portion 20 is provided only on a portion of one surface of the first resin layer 11, and preferably, a portion of the one surface of the first resin layer 11 is exposed. With this configuration, by bonding one surface of the first resin layer 11 to one laminated glass member and bonding the other surface of the first resin layer 11 (i.e., the surface opposite to the surface provided with the movement preventing portion 20) to the other laminated glass member, the image-bearing laminate can be used as an interlayer film for laminated glass, thereby appropriately joining two laminated glass members.

[0230] [Laminated glass]

[0231] Laminated glass includes an interlayer film for laminated glass, and generally comprises a pair of laminated glass members and the interlayer film for laminated glass disposed between the pair of laminated glass members, wherein the pair of laminated glass members are bonded via the interlayer film for laminated glass.

[0232] The interlayer film for laminated glass used in laminated glass may be composed of the image-bearing laminate as described above, or may be obtained by laminating another layer such as an additional resin layer on the image-bearing laminate.

[0233] The laminated glass components used in laminated glass can be glass sheets. The glass sheets can be either inorganic glass or organic glass, with inorganic glass being preferred. Inorganic glass is not particularly limited, and examples thereof include clear glass, float glass, polished glass, patterned glass, wired glass, and green glass.

[0234] As the organic glass, what is generally called resin glass is used, but is not particularly limited. Examples thereof include organic glass made of resins such as polycarbonate, acrylic resin, acrylic copolymer resin, and polyester.

[0235] The two glass plates may be made of the same material or different materials. For example, one may be inorganic glass and the other organic glass, but preferably both of the two glass plates are inorganic glass or organic glass.

[0236] The thickness of each glass plate is not particularly limited, and is, for example, about 0.1 to 15 mm, preferably 0.5 to 5 mm. The thickness of each glass plate may be the same or different, but is preferably the same.

[0237] The method for producing laminated glass is not particularly limited. For example, an image-bearing laminate is sandwiched between two laminated glass members. Air remaining between the two glass members and the resin film is removed by vacuuming with a pressing roller or in a rubber bag. The laminate is then pre-bonded at approximately 70-110°C to produce the laminate. The laminate is then placed in an autoclave or pressed at approximately 120-150°C and a pressure of 1-1.5 MPa. Laminated glass can be obtained by this process.

[0238] In addition, regarding laminated glass, when other resin layers such as additional resin layers are laminated on the image-bearing laminate, other layers such as additional resin layers can be laminated on the image-bearing laminate in advance to integrate them, and the integrated material can be sandwiched between two laminated glass components to manufacture laminated glass by the same method as described above.

[0239] Furthermore, when additional layers such as a resin layer are laminated on the image-bearing laminate, the image-bearing laminate and the additional resin layer may be laminated without prior integration, and the resulting laminated material may be sandwiched between two laminated glass members, thereby producing laminated glass using the same method as described above. In this case, an interlayer film for laminated glass, in which the additional layers are laminated on the image-bearing laminate, is also produced simultaneously with the production of the laminated glass.

[0240] The interlayer film for laminated glass and the laminated glass of the present invention can be used as glass structures such as window glass in various fields, including vehicles such as automobiles, railway vehicles, aircraft, and ships, and in buildings. However, they are preferably used in various vehicle applications such as automobiles. When used in automobiles, they can be used in front windows, side windows, and rear windows.

[0241] The interlayer film for laminated glass and the laminated glass of the present invention can incorporate an image within the glass structure and are therefore preferably used in applications requiring high design. For example, when used in automotive window glass, the window glass can be decorated to suit the vehicle body design and color. Furthermore, in architectural applications, the interlayer film and the laminated glass are preferably used as decorative glass for exterior or interior applications.

[0242] Furthermore, as described above, when the image carrier of laminated glass contains a luminescent material, it is preferably used together with a light source device for emitting excitation light. The light source device is not particularly limited; however, when the laminated glass is used in a vehicle, it is preferably located inside the vehicle, for example. Furthermore, when the laminated glass is used in a building, the light source device may be located inside or outside the building.

[0243] Example

[0244] The present invention will be described in further detail with reference to Examples, but the present invention is not limited to these Examples.

[0245] [Example 1]

[0246] (Formation of Image-Carrying Laminate)

[0247] First, as the first resin layer and the second resin layer, a resin film was prepared, which was formed by 100 parts by mass of PVB (polyvinyl butyral resin, average polymerization degree 1700, hydroxyl content 30.5 mol%, acetylation degree 1 mol%, acetalization degree 68.5 mol%) and 30 parts by mass of plasticizer (3GO: triethylene glycol-di-2-ethylhexanoate).

[0248] A resin composition containing 2-hydroxypropyl methacrylate was applied to the entire surface of one surface of the prepared resin film for the first resin layer by inkjet printing at 3 W / cm 2 The resin composition was cured by irradiating with ultraviolet light under the conditions of 3W / cm2 to form the first migration prevention layer. Next, an ultraviolet curable ink containing diethyl-2,5-dihydroxyterephthalate as a dye and a multifunctional acrylate compound as a binder resin was applied to the first migration prevention layer by inkjet printing in a predetermined pattern. 2 The ink was cured by irradiating with ultraviolet light under conditions of 100 W / cm2 to form an image carrier. The image shape consisted of five lines of 130 mm in length arranged at intervals of 10 mm, with the widths of the lines being 0.1 mm, 1 mm, 3 mm, 5 mm, and 10 mm. Next, a resin composition containing 2-hydroxypropyl methacrylate was applied to the image carrier using inkjet printing. The resin composition was cured by irradiating with ultraviolet light at 3 W / cm2 to form a second anti-migration layer on the image carrier. A peripheral anti-migration portion was also formed on the outer periphery of the image carrier.

[0249] Then, the resin film for the second resin layer is laminated on the second movement preventing layer and the peripheral movement preventing portion to obtain a Figure 5 The structure shown is an image-bearing laminate having a thickness of 0.8 mm.

[0250] (Formation of laminated glass)

[0251] The resulting image-bearing laminate (interlayer film for laminated glass) was sandwiched between two sheets of clear glass (15 cm long x 15 cm wide x 2.5 mm thick) to produce a laminate. The laminate was placed in a rubber bag and degassed at a vacuum of 2.6 kPa for 20 minutes. The degassed laminate was then transferred to an oven and vacuum-pressed at 90°C for 30 minutes to temporarily press-bond the laminate. The temporarily pressed laminate was then pressed in an autoclave at 135°C and a pressure of 1.2 MPa for 20 minutes to produce laminated glass.

[0252] [Example 2]

[0253] The movement preventing portion (the first and second movement preventing layers, and the outer peripheral movement preventing portion) was formed in the same manner as in Example 1, except that screen printing was used instead of inkjet printing.

[0254] [Example 3]

[0255] The same procedures as in Example 1 were carried out except that the terephthalate material 2a described in Angew. Chem., Int. Ed., 2017, 56, 12543-12547 was used as the dye used in the ultraviolet curing ink.

[0256] [Example 4]

[0257] The same procedures as in Example 1 were carried out except that the terephthalic acid material 5 described in Chemistry A European Journal, 2019, 25, 16732-16739 was used as the dye used for the ultraviolet curing ink.

[0258] [Example 5]

[0259] The same procedures as in Example 1 were carried out except that the material used for the movement preventing portion (the first and second movement preventing layers, and the outer peripheral movement preventing portion) was changed from the 2-hydroxypropyl methacrylate compound to 2-hydroxyethyl methacrylate.

[0260] [Comparative Examples 1 to 3]

[0261] The same procedures as in Examples 1, 2, and 4 were carried out except that the formation of the movement preventing portion (the first movement preventing layer, the second movement preventing layer, and the outer peripheral movement preventing portion) was omitted.

[0262] (evaluate)

[0263] The image bearing portion of the laminated glass obtained in each example and comparative example was subjected to a light emitting diode (LED) The irradiation wavelength was 405 nm and the intensity was 10 mW / cm 2 The laminated glass was then exposed to light and the luminescent image-bearing portion was observed. The initial appearance was evaluated according to the following evaluation criteria. Furthermore, the produced laminated glass was placed in a thermostatic chamber set at 100°C for 14 days. After the placement, the laminated glass was removed from the thermostatic chamber and observed using the same method as above. The appearance over time was evaluated according to the following evaluation criteria. The evaluation results are shown in Table 1.

[0264] (Evaluation Criteria)

[0265] OK: Almost no bleeding of the image was observed, and five lines in the image bearing portion were clearly visually recognized.

[0266] NG: Image bleeding was observed, five lines in the image bearing portion were vaguely visible, and at least one line appeared to overlap with other lines.

[0267] [Table 1]

[0268]

[0269] In each of the above embodiments, a migration prevention layer is provided between each resin layer and the image bearing portion, thereby preventing the constituent materials of the image bearing portion from migrating to the resin layer, or vice versa. Therefore, even if the degradation is accelerated, the dye hardly seeps out of the image bearing portion, thereby maintaining the good image quality of the image bearing portion.

[0270] In contrast, in each comparative example, since the migration prevention layer was not provided, the dye of the image bearing member bled out from the image bearing member when accelerated degradation occurred, and good image quality of the image bearing member could not be maintained.

[0271] 10A~10F Image-bearing laminate

[0272] 11 1st resin layer

[0273] 12 Second resin layer

[0274] 15 Image carrier

[0275] 20 Movement prevention unit

[0276] 21 1st Movement Prevention Layer

[0277] 22 Second Movement Prevention Layer

[0278] 23 Peripheral movement prevention portion.

Claims

1. An image-bearing laminate, which is an image-bearing laminate bearing an image, It includes an image bearing portion, a first resin layer, and a movement preventing portion. The movement preventing portion includes a first movement preventing layer that is located between the image supporting portion and the first resin layer and prevents movement of constituent materials of the image supporting portion and the first resin layer.

2. The image bearing laminate according to claim 1, wherein the movement preventing portion includes a second movement preventing layer and a peripheral movement preventing portion, wherein the second movement preventing layer is located on a surface of the image bearing portion opposite to a surface on which the first movement preventing layer is provided, and the peripheral movement preventing portion is located on the peripheral side of the image bearing portion.

3. The image bearing laminate according to claim 2, further comprising a second resin layer. The second migration prevention layer is located between the image bearing member and the second resin layer. The first resin layer and the second resin layer are stacked with the movement preventing portion interposed therebetween, and the image supporting portion is enclosed within the movement preventing portion.

4. The image bearing laminate according to claim 2, further comprising a second resin layer. The second migration prevention layer is located between the image bearing member and the second resin layer. The first resin layer and the second resin layer are partially laminated via the movement preventing portion, and are directly laminated in other portions.

5. The image bearing laminate according to claim 2, further comprising a second resin layer. The second migration prevention layer is located between the image bearing member and the second resin layer. A portion of the second resin layer is directly laminated on a portion of the first migration prevention layer. 6 . The image bearing laminate according to claim 1 , wherein the image bearing portion is formed of an ink containing a dye. 7 . The image bearing laminate according to claim 6 , wherein the dye is a compound having a terephthalate skeleton. 8 . The image bearing laminate according to claim 6 , wherein the movement preventing portion contains substantially no dye. 9 . The image bearing laminate according to claim 1 , wherein a total thickness of the movement preventing portion and the image bearing portion is 1 μm or more and 200 μm or less. 10 . The image carrying laminate according to claim 1 , wherein a thickness ratio of the first anti-migration layer to the image carrying portion is 1:200 to 200:

1. 11 . The image bearing laminate according to claim 1 , wherein the movement preventing portion is formed by curing a resin composition containing an acrylate compound. 12 . An interlayer film for laminated glass, comprising the image-bearing laminate according to claim 1 . 13 . Laminated glass comprising the interlayer film for laminated glass according to claim 12 . 14 . The method for producing the image-bearing laminate according to claim 1 , comprising forming at least a portion of the movement-preventing portion and the image-bearing portion by printing. 15 . The method for producing an image bearing laminate according to claim 14 , wherein the printing is at least one of inkjet printing and screen printing.

Images