Cosmetic materials
The decorative material with defined first and second regions, featuring a thicker first cured layer and a penetration prevention layer, addresses manufacturing and durability issues, achieving a durable and visually appealing three-dimensional effect.
Patent Information
- Application Number
- JP2021551115
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-09-30
- Filing Date
- 2020-03-27
- Publication Date
- 2025-01-15
- Estimated Expiration
- 2040-03-27
AI Technical Summary
Existing decorative materials with uneven surfaces face challenges in manufacturing cost, synchronization of design with underlying patterns, and deterioration of design quality over time due to thin surface layers that are prone to wear.
A decorative material with distinct first and second regions, where the first region has a thicker first cured material layer with a releasable surface and a penetration prevention layer, and the second region has a thinner second cured material layer, ensuring a visual three-dimensional effect and improved abrasion resistance.
The solution provides a decorative material with enhanced abrasion resistance and a clear three-dimensional effect by maintaining the integrity of the surface layers, preventing cohesive failure and ensuring the second cured material layer peels off cleanly from the first region.
Smart Images

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Abstract
Description
[Technical field]
[0001] The present invention relates to a decorative material. [Background technology]
[0002] Conventionally, decorative materials have been used for the surfaces of tables, counters, walls, floors, etc., by impregnating a porous substrate such as titanium paper with an uncured resin liquid of melamine resin, laminating it on phenol core paper, etc. as necessary, and curing the impregnated resin liquid by a heat press. Such decorative materials impregnated and cured with melamine resin exhibit physical properties such as strength, hardness, and heat resistance.
[0003] Such decorative materials are required to have a design that gives off a sense of luxury, and a visual three-dimensional effect is imparted by forming an uneven shape on the surface. As a decorative material having an uneven surface, there has been proposed a decorative material that is embossed using an embossed plate (a textured mirror plate) on which an uneven surface is formed (see, for example, Patent Documents 1 and 2).
[0004] However, when imparting a desired design of a concave-convex pattern to the surface of the decorative material described in Patent Documents 1 and 2, an embossing plate is required for each pattern, which is costly and difficult to manufacture. In addition, it is difficult to harmonize the concave-convex shape with the underlying pattern of the decorative material, which makes it difficult to impart a high level of design.
[0005] On the other hand, a decorative material disclosed in Patent Document 3 has been proposed as a decorative material having an uneven surface shape without using an embossed plate. [Prior art documents] [Patent documents]
[0006] [Patent Document 1] JP 2015-193209 A [Patent Document 2] JP 2017-87544 A [Patent Document 3] International Publication No. 2016 / 148091 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]
[0007] The decorative material of Patent Document 3 comprises a paper base material, a release layer containing a cured product of an ionizing radiation curable resin provided on a portion of the surface of the paper base material, and a surface layer containing a cured product of a melamine resin provided on the remaining portion of the surface of the paper base material (the portion of the surface of the paper base material on which the release layer is not provided). The decorative board of Patent Document 3 is manufactured by a method including a step of providing a release layer on a portion of the surface of the paper base material, a step of impregnating the paper base material with an uncured product of melamine resin and coating the release layer with the uncured product of melamine resin, and then heating to thermally cure the uncured product of melamine resin, and a step of peeling off the cured resin film coating the release layer. The decorative material of Patent Document 3 does not use an embossed plate, and therefore can solve the problems of Patent Documents 1 and 2. However, there have been many cases where the decorative material of Patent Document 3 deteriorates in design over time. The present invention has been made under these circumstances, and has an object to provide a decorative material which has a visual three-dimensional effect and is also excellent in abrasion resistance. [Means for solving the problem]
[0008] As a result of intensive research, the inventors have found that the decorative material of Patent Document 3 cannot have a thick surface layer containing a cured melamine resin, and therefore the decorative layer on the substrate wears away over time, resulting in a loss of design. The present inventors also found that the reason why the thickness of the surface layer of the decorative material of Patent Document 3 cannot be increased is because the release layer is thin. This is because, when the thickness of the surface layer is increased when the release layer is thin, the thickness of the cured resin film on the release layer increases, and the cured resin film undergoes cohesive failure when peeling off the cured resin film on the release layer.
[0009] The present invention aims to provide the following items [1] to [7]. [1] A decorative material having a base material selected from a paper base material and a fiber base material, wherein the decorative material has a first region and a second region in a plane, and the decorative material at a location corresponding to the first region has a first cured product layer with a release surface on the base material, and the decorative material at a location corresponding to the second region has a second cured product layer on the base material. When the thickness of the first cured product layer is defined as t1 and the thickness of the second cured product layer is defined as t2, t1 is more than 3.5 μm and not more than 30.0 μm, and the relationship of t1 < t2 is satisfied. [2] The decorative material according to [1], wherein the first cured product layer contains a curable resin and an inorganic filler. [3] The decorative material according to [2], wherein the content of the inorganic filler is more than 20 parts by mass and not more than 40 parts by mass with respect to 100 parts by mass of the curable resin. [4] The decorative material according to any one of [1] to [3], wherein the decorative material at a location corresponding to the first region has a first decorative layer at least partially between the base material and the first cured product layer. [5] The decorative material according to any one of [1] to [3], wherein the decorative material at a location corresponding to the first region has a penetration prevention layer between the base material and the first cured product layer. [6] The decorative material according to any one of [1] to [5], wherein the decorative material at a location corresponding to the second region has a second decorative layer at least partially between the base material and the second cured product layer. [7] The decorative material according to any one of [1] to [6], wherein the second cured product layer contains a melamine resin.
Advantages of the Invention
[0010] According to the present invention, it is possible to provide a decorative material having a visual three-dimensional effect and excellent wear resistance.
Brief Description of the Drawings
[0011] [Figure 1] It is a cross-sectional view showing an embodiment of the decorative material of the present invention. [Diagram 2] It is a cross-sectional view showing another embodiment of the decorative material of the present invention. [Diagram 3]It is a cross-sectional view showing one step of the method for manufacturing a cosmetic material of the present invention. [Figure 4] It is a cross-sectional view showing one step of the method for manufacturing a cosmetic material of the present invention. [Diagram 5] It is a cross-sectional view showing one step of the method for manufacturing a cosmetic material of the present invention. [Figure 6] It is a cross-sectional view showing one step of the method for manufacturing a cosmetic material of the present invention.
Embodiments for Carrying Out the Invention
[0012] [Cosmetic Material] The cosmetic material of the present invention is a cosmetic material having a base material selected from a paper base material and a fiber base material. The cosmetic material has a first region and a second region in a plane. The cosmetic material corresponding to the first region has a first cured product layer having a release property on the base material, and the cosmetic material corresponding to the second region has a second cured product layer on the base material. When the thickness of the first cured product layer is defined as t1 and the thickness of the second cured product layer is defined as t2, t1 is more than 3.5 μm and 30.0 μm or less, and satisfies the relationship t1 < t2.
[0013] FIG. 1 and FIG. 2 are cross-sectional views showing embodiments of the cosmetic material 100 of the present invention. The cosmetic material 100 in FIGS. 1 and 2 has a first region R1 and a second region R2 in a plane. Further, the cosmetic material 100 in FIGS. 1 and 2 has a first cured product layer 32 having a release property on the base material 10 at a location corresponding to the first region R1. Note that the cosmetic material 100 in FIG. 2 has a penetration prevention layer 31 between the base material 10 and the first cured product layer 32. In FIGS. 1 and 2, t1 indicates the thickness of the first cured product layer 32 having a release property, and t2 indicates the thickness of the second cured product layer 22. The cosmetic material 100 in FIGS. 1 and 2 satisfies the relationship t1 < t2. Further, in FIG. 2, t0 indicates the thickness of the penetration prevention layer 31. 1 and 2 has a first decorative layer 33 between the substrate 10 and the first cured material layer 32 in a location corresponding to the first region R1. Also, the decorative material 100 in Figures 1 and 2 has a second decorative layer 23 between the substrate 10 and the second cured material layer 22 in a location corresponding to the second region R2.
[0014] In this specification, the term "planar surface" refers to the surface of the side of the cosmetic material of the present invention that has the permeation prevention layer with respect to the substrate (within the xy plane when the cosmetic material in FIG. 1 is viewed from the permeation prevention layer side with respect to the substrate). In addition, in this specification, the term "planar view" refers to the cosmetic material of the present invention that is viewed perpendicularly from the side that has the permeation prevention layer with respect to the substrate.
[0015] <Base material> The substrate is selected from a paper substrate and a fiber substrate, with the paper substrate being preferred. Paper substrates and fiber substrates are preferred in that they can be imparted with excellent mechanical properties by impregnating them with a curable resin, thereby increasing the pencil hardness of the surface of the decorative material and making the surface of the decorative material less susceptible to scratches.
[0016] Examples of paper substrates include kraft paper, titanium paper, linter paper, resin-impregnated paper, tissue paper, and Japanese paper. Examples of the fiber substrate include a fiber substrate made of inorganic fibers such as glass fibers, alumina fibers, silica fibers, and carbon fibers, a fiber substrate made of organic fibers of various synthetic resins such as polyester resin, acrylic resin, polyethylene resin, and polypropylene resin, and a composite of these. The fiber substrate may be a nonwoven fabric or a woven fabric.
[0017] The thickness of the substrate is not particularly limited and may be appropriately selected depending on the desired performance. From the viewpoints of ensuring mechanical properties and ease of handling, the thickness is usually about 10 to 150 μm, preferably 20 to 120 μm, and more preferably 30 to 100 μm. When a paper substrate is used as the substrate, the basis weight is usually 20 to 150 g / m 2 Approximately, preferably 30 to 100 g / m 2 It is.
[0018] The substrate is preferably impregnated with a curable resin. This structure can improve the mechanical strength of the cosmetic material, and in turn increase the pencil hardness of the surface of the cosmetic material, making the surface of the cosmetic material less susceptible to scratches. As the curable resin, a thermosetting resin, an ionizing radiation curable resin, or the like can be used, with a thermosetting resin being preferred from the viewpoint of ease of handling.
[0019] As the curable resin to be impregnated into the substrate, from the viewpoint of further improving the texture of the decorative material and improving the mechanical strength of the decorative material, preferred are melamine resin, urea resin, melamine-urea resin, guanamine resin, sulfonamide resin, diallyl phthalate resin, polyester resin, phenol resin, epoxy resin, aminoalkyd resin, silicon resin, polysiloxane resin, etc., and among these, preferred are thermosetting resins such as melamine resin, urea resin, melamine-urea resin, phenol resin, guanamine resin, sulfonamide resin, etc. Among the thermosetting resins, preferred are melamine resin, melamine-urea resin, and phenol resin, and particularly preferred is melamine resin.
[0020] An example of a method for impregnating a substrate with a thermosetting resin is to prepare an uncured thermosetting resin composition and impregnate the substrate with the composition (for example, step (3) described below). The impregnated composition is heated at an appropriate time to be cured by a crosslinking reaction, a polymerization reaction or the like, to become a cured thermosetting resin (for example, step (5) described below).
[0021] In this specification, the term "thermosetting resin" refers to a cured product obtained by curing an uncured thermosetting resin. The same applies to other curable resins such as ionizing radiation curable resins. In this specification, the terms "curable resin composition," "thermosetting resin composition," and "ionizing radiation curable resin composition" mean that the composition is uncured, unless otherwise specified.
[0022] The base material may be subjected to surface treatment such as physical surface treatment including oxidation method, unevenness formation method, etc., or chemical surface treatment, etc. on one or both of its surfaces, or a primer layer may be formed, in order to improve the interlayer adhesion with other layers constituting the decorative material, strengthen the adhesion to the adherend, etc. Examples of the oxidation method include corona discharge treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone-ultraviolet treatment method, etc., and examples of the unevenness formation method include sandblasting method, solvent treatment method, etc. These surface treatments are appropriately selected according to the type of the base material, but generally, the corona discharge treatment method is preferably used in terms of the effect of the surface treatment and workability, etc.
[0023] <Region> The decorative material of the present invention has a first region R1 and a second region R2 in the plane. When the thickness of the first cured product layer is defined as t1 and the thickness of the second cured product layer is defined as t2, the difference between t1 and t2 serves as an index of the elevation difference between the elevation of the first region R1 and the elevation of the second region R2. Therefore, by satisfying the relationship of t1 < t2, the first region R1 is visually recognized as concave, and the second region R2 is visually recognized as raised, and the three-dimensional effect of the decorative material can be made good by the contrast between the two regions. In addition, when the first region has a penetration prevention layer with a thickness of t0, in order to obtain a good three-dimensional effect, it is preferable to satisfy the relationship of t0 + t1 < t2.
[0024] It is preferable that t2 - t1 is 2.0 μm or more and 45.0 μm or less, more preferably 5.0 μm or more and 35.0 μm or less, and even more preferably 10.0 μm or more and 30.0 μm or less. By setting t2 - t1 to 0.1 μm or more, it is easy to obtain a good three-dimensional effect. Also, by setting t2 - t1 to 20 μm or less, it is possible to suppress the concentration of stress in the second region when the surface is rubbed, suppress partial loss in the second region, etc., and it is easy to improve the wear resistance. When the first region has a permeation prevention layer with a thickness of t0, t2-(t0+t1) is preferably 2.0 μm or more and 45.0 μm or less, more preferably 5.0 μm or more and 35.0 μm or less, and even more preferably 10.0 μm or more and 30.0 μm or less.
[0025] It is preferable to calculate t0, t1, and t2 as the average value of the thicknesses at 20 locations. The thickness can be calculated, for example, from a cross-sectional photograph of the decorative material. It is preferable to select the 20 locations for calculating the average value so as not to be biased.
[0026] When the area of the first region R1 of the decorative material is defined as S1 and the area of the second region is defined as S2, the ratio S2 / S1 is preferably 0.5-20, and more preferably 1.0-10. By making S2 / S1 0.5 or more, the proportion of high elevations in the plane of the decorative material increases, making it easier to improve the abrasion resistance of the decorative material. Also, by making S2 / S1 20 or less, the balance between the proportion of areas that are visible as recessed and areas that are visible as raised can be kept in an appropriate range, making it easier to improve the design.
[0027] 《First area》 The first region is visually perceived as being recessed compared to the second region. The first region has, on a substrate, a permeation preventing layer and a first cured material layer having a releasable surface, in this order.
[0028] The first region preferably has a roughened surface. By roughening the surface of the first region, the first region is more likely to appear recessed, which makes it easier to achieve a better three-dimensional effect.
[0029] -First cured material layer- The first cured material layer has a releasable surface. Since the first cured material layer has a releasable surface, most of the second cured material layer on the first cured material layer is peeled off. It is preferable that the second cured material layer on the first cured material layer is completely peeled off from the viewpoint of improving the three-dimensional effect due to the surface unevenness, but there are many cases where the second cured material layer cannot be completely peeled off from the first cured material layer. Therefore, a small amount of the second cured material layer may remain on the first cured material layer as long as it does not impair the effects of the present invention. Since most of the second cured material layer on the first cured material layer is peeled off, the area having the first cured material layer essentially forms the first area of the decorative material.
[0030] The thickness t1 of the first cured product layer must be more than 3.5 μm and not more than 30.0 μm. By making t1 greater than 3.5 μm, even if the thickness of the second cured material layer is increased, it is possible to suppress cohesive failure of the second cured material layer in the first region R1 when peeling the second cured material layer from the first region R1 (see step (7) described below). In other words, by making t1 greater than 3.5 μm, it is possible to increase the thickness of the second cured material layer, and as a result, it is possible to easily improve the abrasion resistance of the decorative material. Furthermore, by setting t1 to 30.0 μm or less, the first cured product layer can be formed stably. t1 is preferably 5.0 μm or more and 25.0 μm or less, and more preferably 7.0 μm or more and 20.0 μm or less.
[0031] The thickness t1 of the first cured product layer can be easily adjusted to the above range by increasing the viscosity of the composition forming the first cured product layer or by forming a permeation prevention layer.
[0032] The first cured product layer is a layer formed from a curable resin, more specifically, a layer formed from a cured product of an uncured curable resin composition. As the curable resin, from the viewpoint of obtaining a design with a higher quality texture and more excellent surface properties, thermosetting resins and ionizing radiation curable resins are preferred, and ionizing radiation curable resins are more preferred.
[0033] Preferred examples of the thermosetting resin include the same as those exemplified as the thermosetting resin that can be impregnated into the substrate.
[0034] The ionizing radiation curable resin is a resin that crosslinks and hardens by irradiation with ionizing radiation, and has an ionizing radiation curable functional group. Here, the ionizing radiation curable functional group is a group that crosslinks and hardens by irradiation with ionizing radiation, and preferred examples include functional groups having an ethylenic double bond such as (meth)acryloyl group, vinyl group, and allyl group. In addition, the ionizing radiation means electromagnetic waves or charged particle beams that have an energy quantum capable of polymerizing or crosslinking molecules, and generally includes ultraviolet rays (UV) or electron beams (EB), but also includes electromagnetic waves such as X-rays and gamma rays, charged particle beams such as alpha rays, and ion beams.
[0035] Specifically, the ionizing radiation curable resin can be appropriately selected from polymerizable monomers and polymerizable oligomers that have been conventionally used as ionizing radiation curable resins, and it is preferable to use a mixture of a polymerizable monomer and a polymerizable oligomer. When a polymerizable monomer is used alone, the crosslink density of the first cured material layer is increased, and the second cured material layer on the first cured material layer can be easily peeled off (see step (7) described later). However, when a polymerizable monomer is used alone, the viscosity of the composition forming the first cured material layer is likely to be low, which is not preferable in terms of increasing the thickness of the first cured material layer. On the other hand, when a polymerizable oligomer is used alone, the viscosity of the composition forming the first cured material layer can be easily increased, but it is difficult to increase the crosslink density of the first cured material layer. For this reason, it is preferable to use a mixture of a polymerizable monomer and a polymerizable oligomer, since it is easy to adjust the crosslink density of the first cured material layer and the viscosity of the composition forming the first cured material layer to an appropriate range. The polymerizable monomer and the polymerizable oligomer are mixed so that the amount of the polymerizable oligomer is preferably 10 to 80 parts by mass, more preferably 20 to 60 parts by mass, and further preferably 30 to 50 parts by mass, per 100 parts by mass of the polymerizable monomer.
[0036] As the polymerizable monomer, a (meth)acrylate monomer having a radically polymerizable unsaturated group in the molecule is preferable, and among them, a polyfunctional (meth)acrylate monomer is preferable. Here, "(meth)acrylate" means "acrylate or methacrylate". Examples of polyfunctional (meth)acrylate monomers include (meth)acrylate monomers having two or more ionizing radiation-curable functional groups in the molecule, and having at least a (meth)acryloyl group as the functional group. From the viewpoint of obtaining a design with a higher texture and better surface properties, acrylate monomers having an acryloyl group are preferred. From the viewpoint of obtaining a design with a higher quality texture and more excellent surface properties, the number of functional groups is preferably 2 or more, more preferably 3 or more, and further preferably 4 or more, and the upper limit is preferably 8 or less, more preferably 6 or less. These polyfunctional (meth)acrylates may be used alone or in combination of two or more kinds.
[0037] Preferred examples of such polymerizable monomers include bifunctional (meth)acrylates such as ethylene glycol di(meth)acrylate, bisphenol A tetraethoxy diacrylate, bisphenol A tetrapropoxy diacrylate, and 1,6-hexanediol diacrylate; and trifunctional or higher (meth)acrylates such as trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, dipentaerythritol hexa(meth)acrylate, and isocyanuric acid-modified tri(meth)acrylate. Among these, from the viewpoint of obtaining a design with a higher quality texture and more excellent surface characteristics, dipentaerythritol-based polymerizable monomers such as dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, and dipentaerythritol hexa(meth)acrylate are preferred, dipentaerythritol penta(meth)acrylate and dipentaerythritol hexa(meth)acrylate are more preferred, and it is particularly preferred to use dipentaerythritol penta(meth)acrylate and dipentaerythritol hexa(meth)acrylate in combination.
[0038] Examples of the polymerizable oligomer include (meth)acrylate oligomers having two or more ionizing radiation curable functional groups in the molecule and having at least a (meth)acryloyl group as the functional group. Examples of the polymerizable oligomer include urethane (meth)acrylate oligomers, epoxy (meth)acrylate oligomers, polyester (meth)acrylate oligomers, polyether (meth)acrylate oligomers, polycarbonate (meth)acrylate oligomers, acrylic (meth)acrylate oligomers, polycaprolactone urethane (meth)acrylate oligomers, polycaprolactone diol urethane (meth)acrylates, etc.
[0039] In order to obtain a design with a higher quality texture and better surface properties, the number of functional groups of these polymerizable oligomers is preferably 2 or more, more preferably 3 or more, and the upper limit is preferably 8 or less, more preferably 6 or less.
[0040] The weight average molecular weight of the polymerizable oligomer is preferably 700 or more, more preferably 1,000 or more, and the upper limit is preferably 80,000 or less, more preferably 50,000 or less. In this specification, the weight average molecular weight is an average molecular weight measured by GPC analysis and converted into standard polystyrene.
[0041] The first cured product layer preferably contains a release agent or an inorganic filler in addition to the curable resin, and more preferably contains a release agent and an inorganic filler.
[0042] Examples of the release agent include fluorine-based release agents and silicone-based release agents. From the viewpoint of obtaining a design with a higher quality texture, silicone-based release agents are preferred. Examples of silicone-based release agents include those having a polysiloxane structure as a basic structure, and among them, modified silicone oils having an organic group introduced at least in one of the side chain and the terminal are preferred, and modified silicone oils having an organic group introduced at both terminals are more preferred. From the viewpoint of obtaining a design with a higher texture, preferred examples of the organic group include reactive functional groups such as (meth)acrylic groups, amino groups, epoxy groups, mercapto groups, carbinol groups, phenol groups, and carboxyl groups, and non-reactive functional groups such as polyether groups, aralkyl groups, fluoroalkyl groups, alkyl groups, fatty acid amide groups, and phenyl groups. Among them, reactive functional groups are preferred, and (meth)acrylic groups are particularly preferred, that is, (meth)acrylic modified silicone oils are particularly preferred. In addition, these organic groups may have substituents such as nitrogen atoms, sulfur atoms, hydroxyl groups, and alkyl groups.
[0043] Because the first cured material layer contains a release agent, even if other resins are laminated on the surface of the releasable ink decoration layer (the surface of the first cured material layer), they can be peeled off, while the other resins adhere to the second region and are not peeled off, making it easier to impart an elevation difference between the first region and the second region.
[0044] The content of the release agent is preferably 0.1 to 5 parts by mass, more preferably 0.5 to 3 parts by mass, and even more preferably 1 to 2 parts by mass, based on 100 parts by mass of the curable resin forming the first cured product layer. When the content of the release agent is within the above range, the effect of adding the release agent can be efficiently obtained.
[0045] The first cured material layer preferably contains an inorganic filler. By containing an inorganic filler in the first cured material layer, the surface of the first region is roughened, which makes it easier to improve the visual three-dimensional effect of the decorative material. In addition, by containing a predetermined amount of inorganic filler in the first cured material layer (≒ the composition forming the first cured material layer contains an inorganic filler), the viscosity of the composition forming the first cured material layer can be increased, making it easier to increase the thickness of the first cured material layer.
[0046] Examples of inorganic fillers include particles made of inorganic materials such as oxides such as aluminum oxide, magnesium oxide, silica, calcium oxide, titanium oxide, zinc oxide, and zirconia oxide, hydroxides such as aluminum hydroxide, magnesium hydroxide, and calcium hydroxide, carbonates such as magnesium carbonate and calcium carbonate, sulfates such as calcium sulfate and barium sulfate, and silicates such as magnesium silicate, aluminum silicate, calcium silicate, and aluminosilicate. Among these, oxides such as aluminum oxide, magnesium oxide, silica, calcium oxide, titanium oxide, and zinc oxide are preferred, and silica is particularly preferred.
[0047] From the viewpoint of making it easier to set Ra1 within the range described below, the average particle size of the inorganic filler is preferably 0.3 to 10 μm, more preferably 0.5 to 7 μm, even more preferably 1 to 5 μm, and even more preferably 2 to 4 μm. From the viewpoint of increasing the viscosity of the composition that forms the first cured product layer, the average particle size of the inorganic filler is preferably 5 μm or less, and more preferably 4 μm or less. In this specification, the average particle size of the filler is a value measured by a laser diffraction scattering method.
[0048] The content of the inorganic filler is preferably more than 20 parts by mass and not more than 40 parts by mass, more preferably 23 to 35 parts by mass, and even more preferably 25 to 30 parts by mass, relative to 100 parts by mass of the curable resin forming the first cured product layer. By making the content of the inorganic filler more than 20 parts by mass, the viscosity of the composition forming the first cured material layer can be increased, and the thickness of the first cured material layer can be easily increased. Also, by making the content of the inorganic filler 40 parts by mass or less, the decrease in the coating strength of the first cured material layer can be suppressed. Also, when the content of the inorganic filler is within the above range, it is easy to make Ra1 within the range described below.
[0049] -First decorative layer- The decorative material of the present invention preferably has a first decorative layer at least partially between the substrate and the first cured product layer in a location corresponding to the first region.
[0050] The first decorative layer may be formed in any pattern within the first region, the pattern being determined depending on the design desired to be imparted to the entire decorative material. For example, when the design to be applied to the entire decorative material is a wood pattern, the first decorative layer is preferably formed with one or more patterns selected from vessels, autumn wood, and knots. In other words, the first region is preferably formed with one or more patterns selected from vessels, autumn wood, and knots of wood. Vessels are cylindrical cells that serve as a passage for moisture, and when minute vessels are arranged, a dark pattern appears to be formed along the arrangement to the human eye. Autumn wood is a narrow grain width and dark color part formed from summer to autumn. Note that the wide grain width part formed from spring to summer is called spring wood, and the spring wood and autumn wood are alternately repeated to form the annual rings of wood. Knots are traces of branches that have been incorporated into the trunk, have a circular or elliptical shape, and have a darker color than the surrounding tissue. In addition, when the design to be imparted to the entire decorative material is a stone pattern such as travertine, the first decorative layer is preferably a recessed pattern. In other words, the first region is preferably formed with a stone recessed pattern. In addition, when the design to be imparted to the entire decorative material is a tile pattern or a brick pattern, the first decorative layer preferably has a joint pattern. In other words, the first region preferably has a tile or brick joint pattern formed therein. By providing the design by the first decorative layer as described above, the first region becomes easily visible as a recess, and the visual three-dimensional effect can be improved.
[0051] The first decorative layer can be formed, for example, by printing using a first decorative layer forming ink that contains a colorant and a binder resin.
[0052] Examples of the colorant for the first decorative layer include inorganic pigments such as carbon black (ink), iron black, titanium white, antimony white, yellow lead, titanium yellow, red iron oxide, cadmium red, ultramarine blue, cobalt blue, etc., organic pigments such as quinacridone red, isoindolinone yellow, phthalocyanine blue, etc., or dyes, etc. It is preferable that the colorant for the first decorative layer does not contain a luster pigment. The binder resin of the first decorative layer is not particularly limited, and examples thereof include acrylic resins, styrene resins, polyester resins, urethane resins, chlorinated polyolefin resins, vinyl chloride-vinyl acetate copolymer resins, polyvinyl butyral resins, alkyd resins, petroleum resins, ketone resins, epoxy resins, melamine resins, fluorine resins, silicone resins, cellulose derivatives, rubber resins, and the like.
[0053] The thickness of the first decorative layer can be appropriately adjusted within the range of about 0.1 to 20 μm, taking into consideration the desired design.
[0054] -Penetration prevention layer- The decorative material of the present invention may have a permeation prevention layer between the substrate and the first cured material layer in the area corresponding to the first region. When the decorative material has a first decorative layer, the permeation prevention layer is preferably disposed between the first decorative layer and the first cured material layer. By having a permeation prevention layer between the substrate and the first cured material layer, the composition constituting the first cured material layer is prevented from permeating into the substrate side, making it easier to increase the thickness of the first cured material layer, which in turn makes it easier to increase the thickness of the second cured material layer, and makes it easier to improve the abrasion resistance of the decorative material.
[0055] It is essential that the permeation prevention layer is formed on a part of the substrate, not on the entire substrate. If the permeation prevention layer is formed on the entire substrate, the substrate is difficult to be impregnated with the curable resin. Therefore, when the total area of the permeation prevention layer in the plan view of the decorative material is 100, the area of the permeation prevention layer present in the first region is preferably 90 or more, more preferably 95 or more, even more preferably 97 or more, and even more preferably 99 or more. In other words, it is preferable that the permeation prevention layer is not substantially present in any place other than the first region in the plan view of the decorative material. In addition, the permeation preventing layer is preferably formed in harmony with the pattern of the first cured material layer within the plane of the decorative material. For example, when the total area of the permeation preventing layer in a plan view of the decorative material is taken as 100, the area of the permeation preventing layer in harmony with the first cured material layer is preferably 90 or more, more preferably 95 or more, even more preferably 97 or more, and even more preferably 99 or more.
[0056] The permeation-preventing layer preferably contains a curable resin. In other words, the permeation-preventing layer preferably contains a cured product of an uncured curable resin composition. In addition, the content of the curable resin is preferably 50 mass% or more of the total solid content constituting the permeation prevention layer, more preferably 70 mass% or more, even more preferably 90 mass% or more, and even more preferably 99 mass% or more. When the permeation preventing layer contains a curable resin, the permeation preventing layer can improve the sealing effect of the first cured product layer.
[0057] Preferred examples of the curable resin for the permeation preventing layer include a thermosetting resin and an ionizing radiation curable resin, and an ionizing radiation curable resin is more preferred.
[0058] Preferred examples of the thermosetting resin include the same as those exemplified as the thermosetting resin that can be impregnated into the substrate. As the ionizing radiation curable resin, the same as those exemplified as the ionizing radiation curable resin of the first cured material layer can be preferably exemplified. Note that, in a preferred embodiment, the ionizing radiation curable resin of the first cured material layer is a mixture of a polymerizable monomer and a polymerizable oligomer, whereas the ionizing radiation curable resin of the permeation preventing layer preferably contains a small amount of polymerizable oligomer, and more preferably contains only a polymerizable monomer. By increasing the amount of polymerizable monomer, the crosslink density of the permeation preventing layer can be increased, and it is easy to suppress the composition constituting the first cured material layer from permeating into the substrate side.
[0059] From the viewpoint of facilitating the formation of the first cured product layer, it is preferable that the permeation preventing layer does not substantially contain a release agent. "Substantially not containing a release agent" means that the content of the release agent is less than 0.1 mass% of the total solid content of the permeation preventing layer, preferably 0.01 mass% or less, and more preferably 0 mass% (no release agent is contained).
[0060] The thickness t0 of the permeation prevention layer is preferably 0.1 to 10.0 μm, and more preferably 0.5 to 5.0 μm. By setting t0 to 0.1 μm or more, it is possible to easily suppress the uncured curable resin composition contained in the ink for forming the first cured product layer from permeating into the substrate side. Also, by setting t0 to 10 μm or less, it is possible to stably form a permeation prevention layer without affecting other regions.
[0061] -Surface shape- The arithmetic mean roughness Ra of the surface of the first region according to JIS B0601:1994 at a cutoff value of 0.8 mm is preferably 1.0 to 5.0 μm, and more preferably 1.0 to 3.0 μm. By making the Ra of the first region 1.0 μm or more, it is possible to make the first region appear concave. Also, by making the Ra of the first region 5.0 μm or less, it is possible to prevent the first region from appearing whitish, and it is possible to easily improve the design.
[0062] The Ra of the first region can be adjusted, for example, by roughening the surface of the substrate, or by roughening the surface of a layer (such as the first cured product layer described below) formed on the substrate.
[0063] 《Second area》 The second region is a region that is visually recognized as being higher than the first region. The second region has a second cured material layer on the substrate.
[0064] -Second cured material layer- The second cured product layer is a layer formed from a curable resin, more specifically, a layer formed from a cured product of an uncured curable resin composition.
[0065] As the curable resin of the second cured material layer, from the viewpoint of obtaining a design with a higher texture, a thermosetting resin or an ionizing radiation curable resin is preferably mentioned, and a thermosetting resin is more preferable. These curable resins may be used alone or in combination of two or more kinds, for example, a thermosetting resin and an ionizing radiation curable resin may be used in combination, or these curable resins may be used in combination with a thermoplastic resin. As the thermosetting resin, the same ones as those exemplified as the thermosetting resin that can be impregnated into the substrate can be preferably exemplified, and the above-mentioned various thermosetting resins are also preferred, and it is also the same that melamine resins are particularly preferred. By using such a curable resin, a design with a higher texture can be obtained, and adhesion to the substrate can be improved, resulting in better mechanical strength. As the ionizing radiation curable resin, the same ones as those exemplified for the penetration prevention layer can be used. When a curable resin and a thermoplastic resin are used in combination, the content of the curable resin relative to the total of these resins is usually about 50% by mass or more and less than 100% by mass, and preferably 60% by mass or more and 90% by mass or less.
[0066] The second cured product layer preferably does not contain particles in order to reduce diffusion.
[0067] The thickness t2 of the second cured product layer is preferably 5.0 μm or more and 100 μm or less, more preferably 10.0 μm or more and 60.0 μm or less, and even more preferably 25.0 μm or more and 50.0 μm or less. By making t2 5.0 μm or more, it is possible to easily improve the abrasion resistance of the decorative material, while by making t2 100 μm or less, it is possible to stably express the design of the first cured product layer.
[0068] -Second decorative layer- The decorative material of the present invention preferably has a second decorative layer at least partially between the substrate and the second cured product layer in the area corresponding to the second region.
[0069] The second decorative layer can be formed, for example, by printing using a second decorative layer forming ink that contains a colorant and a binder resin. Examples of the colorant and binder resin of the second decorative layer include the colorants and binder resins exemplified for the first decorative layer described below.
[0070] The second decorative layer may be formed, for example, in any desired pattern on the substrate. The arbitrary pattern varies depending on the design to be imparted. For example, the arbitrary pattern is preferably a wood grain pattern (parts other than the vessel groove pattern and / or knot pattern) when a wood grain pattern is to be imparted to the entire decorative material, is preferably a pattern other than the recessed parts when a stone pattern such as travertine is to be imparted to the entire decorative material, and is preferably a tile or brick part when a tile or brick pattern is to be imparted to the entire decorative material.
[0071] The thickness of the second decorative layer can be appropriately adjusted within the range of about 0.1 to 20 μm, taking into consideration the desired design.
[0072] -Surface shape- The arithmetic mean roughness Ra of the surface of the second region according to JIS B0601:1994 at a cutoff value of 0.8 mm is preferably 2.0 μm or less, and more preferably 0.5 to 1.5 μm.
[0073] <Reinforcing layer> The decorative material of the present invention preferably has a reinforcing layer on the surface of the substrate opposite to the side having the first cured product layer in order to reinforce the decorative material. In particular, when a fiber substrate or paper substrate impregnated with a thermosetting resin is used as the substrate, by combining a reinforcing layer, a thermosetting resin decorative board having superior mechanical properties can be obtained.
[0074] The reinforcing layer may be a sheet impregnated with a thermosetting resin. The type of fiber substrate or paper substrate used in the thermosetting resin-impregnated sheet is not particularly limited as long as it is one of the examples of the fiber substrate or paper substrate, and the basis weight is preferably 100 to 300 g / m 2 , more preferably 150 to 250 g / m 2 The thermosetting resin is not particularly limited as long as it can be impregnated into the substrate in the form of a thermosetting resin composition, and a phenolic resin is preferred. That is, the reinforcing layer is preferably a phenolic resin-impregnated paper. The phenol resin-impregnated paper has a basis weight of 150 to 250 g / m 2 The one produced by impregnating the kraft paper with a phenol resin to an impregnation rate of about 20 to 60% and drying at about 100 to 140° C. is preferably used.
[0075] <Primer layer> In the decorative material of the present invention, a primer layer can be provided between each of the layers in order to improve the adhesion between the layers. Examples of the resin material forming the primer layer include urethane resin, polyester resin, acrylic resin, acrylic urethane resin, vinyl chloride-vinyl acetate copolymer resin, etc. The thickness of the primer layer is usually about 0.1 to 15 μm, preferably 1 to 10 μm, from the viewpoint of efficiently obtaining excellent adhesion.
[0076] <Adherent material> The decorative material of the present invention may be formed by laminating and integrating an adherend onto the back surface of a substrate (the surface of the substrate opposite to the side having the first cured product layer).
[0077] The adherend material may be, for example, wood boards such as wood veneer, wood plywood, particle board, MDF (medium density fiberboard), laminated lumber, etc.; gypsum boards such as gypsum boards and gypsum slag boards; cement boards such as calcium silicate boards, asbestos slate boards, lightweight foamed concrete boards, and hollow extruded cement boards; fiber cement boards such as pulp cement boards, asbestos cement boards, and wood chip cement boards; ceramic boards such as pottery, porcelain, earthenware, glass, and enamel; metal boards such as iron boards, galvanized steel boards, polyvinyl chloride sol-coated steel boards, aluminum boards, and copper boards; polyolefin resin boards, acrylic resin boards, ABS boards, poly Examples of such resins include thermoplastic resin plates such as carbonate plates; thermosetting resin plates such as phenolic resin plates, urea resin plates, unsaturated polyester resin plates, polyurethane resin plates, epoxy resin plates, and melamine resin plates; and so-called FRP plates formed by impregnating and curing resins such as phenolic resins, urea resins, unsaturated polyester resins, polyurethane resins, epoxy resins, melamine resins, and diallyl phthalate resins into glass fiber nonwoven fabrics, cloth, paper, and other various fibrous substrates. These may be used alone, or two or more of these may be laminated together to form a composite substrate.
[0078] The method of laminating the substrate and various adherends is not particularly limited, and for example, a method of attaching a sheet to an adherend using an adhesive can be adopted. The adhesive may be appropriately selected from known adhesives depending on the type of adherend. Examples of the adhesive include polyvinyl acetate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ionomer, butadiene-acrylonitrile rubber, neoprene rubber, natural rubber, etc.
[0079] <Application> The decorative material of the present invention is used, for example, for tops of various counters and desks, furniture, cabinets for kitchen products, building materials for homes such as doors, etc. Among these, members used in locations including horizontal surfaces such as tops used for counters and desks, etc., are preferred in that they are more likely to exhibit the effects of the decorative board of the present invention than members used on vertical surfaces because they require a visual three-dimensional effect and are also required to be abrasion resistant since they are rubbed by various items such as clothing, cleaning supplies, and watches.
[0080] [Manufacturing method of decorative materials] The decorative material of the present invention can be produced, for example, by the following steps (1) to (7). (1) A step of preparing a substrate. (2) A step of obtaining a laminate A by forming a first cured material layer having a releasable surface on a portion of the substrate where a first region is to be formed. (3) A step of impregnating the laminate A with a curable resin composition to form an uncured curable resin composition layer on the entire surface of the side of the laminate A having the first cured material layer, thereby obtaining a laminate B. (4) A step of obtaining a laminate C by disposing a release film on the uncured curable resin composition layer side of the laminate B. (5) A step of hot pressing both sides of the laminate C between mirror-finished plates to form a second cured material layer by curing the uncured curable resin composition layer. (6) A step of removing the laminate C from between the mirror plates. (7) A process in which, when peeling and removing the release film from the laminate C, the second cured material layer on the first cured material layer of the second cured material layer is removed together with the release film to form a concave first region, and a convex second region is formed by leaving the second cured material layer formed in an area not having a first region forming layer.
[0081] Step (1) is a step of preparing a substrate 10.
[0082] Step (2) is a step of obtaining a laminate A (71) by forming a first cured material layer 32 having a releasable surface on a portion of the substrate 10 where the first region is to be formed (FIG. 4). The curable resin composition used to form the first cured material layer is preferably cured at this stage. The area where the first cured product layer 32 is formed on the substrate 10 corresponds to the first region R1 of the decorative material obtained by the manufacturing method of the present invention.
[0083] If the decorative material 100 has a first decorative layer 33 and / or a second decorative layer 23, it is preferable to have a step of forming the first decorative layer 33 and / or the second decorative layer 23 between steps (1) and (2) (Figure 3).
[0084] Also, when the decorative material 100 has the penetration prevention layer 31, it is preferable to have a step of forming the penetration prevention layer 31 between the step (1) and the step (2). The curable resin composition used for forming the penetration prevention layer 31 preferably cures at this stage.
[0085] The step (3) is a step of impregnating the laminate A with the curable resin composition and obtaining a laminate B (72) by forming an uncured curable resin composition layer 22a on the entire surface of the side of the laminate A having the first cured product layer 32 (FIG. 5). During the step (3), the curable resin composition can be impregnated into the base material 10.
[0086] The step (4) is a step of obtaining a laminate C (73) by disposing a release film 80 on the side of the uncured curable resin composition layer 22a of the laminate B (FIG. 6). The release film 80 has a role of removing the second cured product layer on the first cured product layer 32 having a release property on the surface among the second cured product layers obtained by curing the uncured curable resin composition layer 22a in the subsequent step (7). That is, when the adhesive force between the release film 80 and the second cured product layer is A1, and the adhesive force between the second cured product layer and the layer (the first cured product layer 32 in the case of the first region R1, the second decorative layer 23 or the base material 10 in the case of the second region R2) located on the base material 10 side of the cured product layer is A2, the material of the release film 80 is not particularly limited as long as the relationship of A1 > A2 in the first region R1 and A1 < A2 in the second region R2 is satisfied.
[0087] Examples of the release film 80 include single layers of sheets of various resins such as polyester resins such as polyethylene terephthalate and polybutylene terephthalate; polyolefin resins such as polyethylene and polypropylene; acrylic resins; or those in which a resin layer is formed on these resin sheets.
[0088] When the decorative material 100 has the reinforcing layer 60, it is preferable to dispose the reinforcing layer 60 on the base material 10 side of the laminate B in the step (4).
[0089] Step (5) is a step of hot pressing the laminate C (73) with both sides of the laminate C (73) sandwiched between mirror plates to form a second cured material layer 22 by curing the uncured curable resin composition layer 22a. During step (5), the curable resin composition impregnated in the substrate 10 can also be cured.
[0090] The conditions for the heat press may be appropriately adjusted depending on the type of thermosetting resin used, and are not particularly limited, but are usually a temperature of 100 to 200° C., a pressure of 0.1 to 9.8 MPa, and a time of 10 seconds to 120 minutes.
[0091] Step (6) is a step of removing the laminate C from between the mirror plates. Step (7) is a step in which, when peeling and removing the release film 80 from the laminate C, the second cured material layer on the first cured material layer 32 of the second cured material layer is removed together with the release film 80 to form a concave first region R1, and at the same time, a convex second region R2 is formed by the second cured material layer 22 remaining in the area not having the first region forming layer 30 (Figure 1). In the method for producing a decorative material of the present invention, because the first cured material layer is thick, even if the second cured material layer is made thick, the second cured material layer on the first region R1 can be peeled off cleanly during step (7) without cohesive failure. EXAMPLES
[0092] The present invention will now be described in more detail with reference to examples, but the present invention is not limited to these examples in any way.
[0093] 1. Evaluation 1-1.Abrasion resistance The abrasion resistance of the decorative materials obtained in the examples and comparative examples was evaluated in accordance with "6.2 Abrasion Resistance Method B" of JIS K6902:2008 using a product name "Rotary Abrasion Tester" manufactured by Toyo Seiki Seisakusho Co., Ltd. The abrasive material used was abrasive paper "Product No.: S-42, 3M company" conforming to JIS R6252. The number of rotations of the rotating disk when 50% of the printed pattern of the decorative material was erased is shown in Table 1.
[0094] 1-2. Peelability of the second cured layer The peelability of the second cured material layer was visually evaluated for the decorative materials obtained in the Examples and Comparative Examples. Those in which no second cured material layer remained on the first region were rated "A", and those in which the second cured material layer underwent cohesive failure on the first region when the release film was peeled off, or the second cured material layer was barely peeled off and the second cured material layer remained on a part of the first region were rated "C". The results are shown in Table 1.
[0095] 1-3. Three-dimensional effect The cosmetic materials obtained in the Examples and Comparative Examples were visually evaluated by 20 random adults under fluorescent lighting to determine whether or not they had a three-dimensional effect. The results are shown in Table 1. A: More than 18 people answered that it has a highly three-dimensional design. B: 15 to 17 people answered that it has a highly three-dimensional design. C: Fewer than 14 people answered that the design had a high degree of three-dimensionality.
[0096] 2. Preparation of cosmetic materials [Example 1] Base material (titanium paper base paper for building materials, product name "PM-67P" manufactured by KJ Specialty Paper Co., Ltd., basis weight: 80g / m 2 A first decorative layer (vascular part of the wood grain) and a second decorative layer (wood grain surface part) having a thickness of 3 μm were formed on the substrate (thickness: 100 μm) by gravure printing using printing ink (Ode SPTI, manufactured by DIC Graphics Corporation). Next, the following curable resin composition 1 for forming a first cured material layer was printed on the first decorative layer, and cured by irradiating with an electron beam (applied voltage: 165 KeV, 3 Mrad (30 kGy)) to obtain a laminate A having a first cured material layer with a thickness t1 of 15.0 μm. Next, the laminate A was impregnated with the following curable resin composition for forming a second cured product layer, and dried to obtain a laminate B (the amount of the cured resin composition when dried was 80 g / m 2 (impregnated so that Next, the following release film was laminated on the surface of the laminate B opposite to the substrate (the surface having the uncured second cured material layer), and a reinforcing layer (a layer having a basis weight of 245 g / m obtained by impregnating craft paper with a liquid uncured resin composition made of a phenolic resin) was formed on the substrate side of the laminate B. 2 A laminate C was obtained by laminating three sheets of phenol resin-impregnated core paper (Ohta Core, manufactured by Ohta Sangyo Co., Ltd.). Next, both sides of the laminate C were sandwiched between mirror plates (the mirror plate was placed on the reinforcing layer side and the embossed plate was placed on the release film side), and the laminate was pressed using a heat press at a molding temperature of 150°C and a molding pressure of 100 kg / cm. 2 After molding, the laminate C was taken out from between the two mirror plates, and the release film was peeled off from the laminate C to obtain the decorative board of Example 1. When the release film was peeled off from the laminate C, the second cured material layer on the first cured material layer was removed together with the release film, forming a concave first region. Also, the second cured material layer remained in the area not having the first cured material layer, forming a convex second region. The decorative material of Example 1 had t1 of 15.0 μm and t2 of 30.0 μm. Furthermore, the ratio (S2 / S1) of the area S1 of the first region to the area S2 of the second region was approximately 3.0.
[0097] <Curable resin composition 1 for forming first cured material layer> The following components were stirred for 1 hour at 2000 rpm using a process homogenizer (manufactured by SMT Corporation, "PH91") to obtain a resin composition. Ionizing radiation curable monomer: 37 parts by weight (Mixture of dipentaerythritol pentaacrylate (functional group number 5) and dipentaerythritol hexaacrylate (functional group number 6), trade name "Aronix M400" manufactured by Toagosei Co., Ltd.) Ionizing radiation curable oligomer: 15 parts by weight (Product name "Beamset 575" manufactured by Arakawa Chemical Industries, Ltd., functional groups: 3 to 6) Silicone release agent: 0.6 parts by weight (Organopolysiloxane modified with methacryloyloxyalkyl at both ends, product name "X-22-164B" manufactured by Shin-Etsu Chemical Co., Ltd.) Silane coupling treated silica: 15 parts by weight (Average particle size 3.0μm) Methyl ethyl ketone: 48 parts by weight
[0098] <Curable resin composition for forming second cured material layer> Melamine formaldehyde resin: 60 parts by weight ·Water: 35 parts by mass Isopropyl alcohol: 5 mass
[0099] <Preparation of release film> The following ionizing radiation curable resin composition was applied to the adhesive surface of a 50 μm thick polyethylene terephthalate film (manufactured by Toyobo Co., Ltd. under the trade name "Cosmoshine A4610") and cured by irradiation with an electron beam (applied voltage: 165 KeV, 5 Mrad (50 kGy)) to form a 5 μm thick cured layer, and a release film was obtained. <<Ionizing radiation curable resin composition>> ·Ionizing radiation curable resin: 100 parts by mass (Trimethylolpropane triacrylate modified with ethylene bottom oxide, trade name "Aronix M350" manufactured by Toagosei Co., Ltd.) Silicone release agent: 2 parts by weight (Organopolysiloxane modified with methacryloyloxyalkyl at both ends, product name "X-22-164B" manufactured by Shin-Etsu Chemical Co., Ltd.) Silica particles: 8 parts by weight (Product name: "Silisia 450" manufactured by Fuji Silysia Chemical Co., Ltd., average particle size: 5.2 μm) Ethyl acetate: 50 parts by weight
[0100] [Examples 2 to 4] The decorative materials of Examples 2 to 4 were obtained in the same manner as in Example 1, except that t1 and t2 were changed to the values shown in Table 1.
[0101] [Comparative Example 1] A decorative material of Comparative Example 1 was obtained in the same manner as in Example 1, except that the curable resin composition 1 for forming the first cured material layer was changed to the following curable resin composition 2 for forming the first cured material layer. The reason that the t1 of the decorative material of Comparative Example 1 is smaller than that of Example 1 is that the viscosity of the material for forming the first cured material layer in Comparative Example 1 was low, and the first cured material layer could not be formed thick.
[0102] <Curable resin composition 2 for forming first cured material layer> The following components were stirred for 1 hour at 2000 rpm using a process homogenizer (manufactured by SMT Corporation, "PH91") to obtain a resin composition. Ionizing radiation curable monomer: 60 parts by weight (Mixture of dipentaerythritol pentaacrylate (functional group number 5) and dipentaerythritol hexaacrylate (functional group number 6), trade name "Aronix M400" manufactured by Toagosei Co., Ltd.) Silicone release agent: 0.6 parts by weight (Organopolysiloxane modified with methacryloyloxyalkyl at both ends, product name "X-22-164B" manufactured by Shin-Etsu Chemical Co., Ltd.) Silane coupling treated silica: 11 parts by weight (Average particle size 3.0μm) Methyl ethyl ketone: 40 parts by weight
[0103] [Comparative Example 2] A decorative material of Comparative Example 2 was obtained in the same manner as Comparative Example 1, except that t2 was changed to the value shown in Table 1.
[0104] [Table 1]
[0105] From the results in Table 1, it can be confirmed that the decorative materials of Examples 1 to 4 have a visual three-dimensional effect and are excellent in abrasion resistance. The reason why the evaluation of the three-dimensional effect of Comparative Example 1 is inferior to that of the Examples is that t1 is small in Comparative Example 1, so that the second cured product layer is not peeled off well from the first region R1 and the second cured product layer remains in the first region. [Explanation of symbols]
[0106] 10: Base material 20: Second region forming layer 22: Second cured material layer 22a: Curable resin composition layer 23: Second decorative layer 30: First region formation layer 31: Penetration prevention layer 32: First cured layer 33: First decorative layer 60: Reinforcement layer 71: Laminate A 72: Laminate B 73: Laminate C 80: Release film 100: Cosmetic materials
Claims
1. A decorative material having a substrate selected from a paper substrate and a fiber substrate, The decorative material has a first region and a second region in a plane, The decorative material in the area corresponding to the first region has a first cured material layer, the first cured material layer having a releasable surface, on the base material, The decorative material in a portion corresponding to the second region has a second cured product layer on the base material, The decorative material in the area corresponding to the first region has a permeation prevention layer between the substrate and the first cured material layer, the permeation preventing layer is formed on a portion of the substrate, and when the total area of the permeation preventing layer when the decorative material is viewed in a plan view is taken as 100, the area of the permeation preventing layer present in the first region is 90 or more; A decorative material, wherein when the thickness of the first cured material layer is defined as t1 and the thickness of the second cured material layer is defined as t2, t1 is 15.0 μm or more and 30.0 μm or less, t2 is 30.0 μm or more and 60.0 μm or less, and the relationship t1 < t2 is satisfied.
2. The decorative material according to claim 1 , wherein the first cured product layer comprises a curable resin and an inorganic filler.
3. The decorative material according to claim 2 , wherein the content of the inorganic filler is more than 20 parts by mass and not more than 40 parts by mass relative to 100 parts by mass of the curable resin.
4. The decorative material according to any one of claims 1 to 3, wherein the decorative material in the area corresponding to the first region has a first decorative layer at least in a portion between the substrate and the first hardened material layer.
5. The decorative material according to any one of claims 1 to 4, wherein the decorative material in the area corresponding to the second region has a second decorative layer at least in a portion between the substrate and the second cured material layer.
6. The decorative material according to any one of claims 1 to 5, wherein the second cured product layer contains a melamine resin.
Citation Information
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