Series of decorative sheet

Abstract

To provide a series of decorative sheets capable of suppressing the occurrence of metamerism even when decorative sheets, each having a pattern layer formed with a printing ink by a different printing method, are combined and arranged in the same space.SOLUTION: A series of decorative sheets in which a decorative wall sheet 110 having a wall pattern layer 113 formed by a gravure printing method and a decorative floor sheet 120 having a floor pattern layer 123 formed by an inkjet printing method are combined and arranged in a room 10, wherein a combined decorative sheet 100 is configured such that a pigment contained in the wall pattern layer 113 of the decorative wall sheet 110 and a pigment contained in the floor pattern layer 123 of the decorative floor sheet 120 are made of the same material.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a series of decorative sheets in which a first decorative sheet having a first pattern layer formed by a first printing method and a second decorative sheet having a second pattern layer formed by a second printing method different from the first printing method are combined and arranged in the same space. [Background technology]

[0002] Decorative sheets used on the interior walls and floors of buildings, furniture, etc., have a pattern layer on a resin substrate, on which a pattern such as wood grain is printed, and a transparent protective layer is then provided on the surface of the pattern layer. The pattern layer is generally provided by gravure printing, but in recent years, inkjet printing has begun to be used to accommodate small-lot production of a wide variety of products. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-071447 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, when a decorative sheet with a wood grain pattern layer formed by gravure printing is applied to the wall surface and a decorative sheet with a wood grain pattern layer formed by inkjet printing is applied to the floor surface within the same room of a building, even if the wood grain patterns on the wall surface and the floor surface are the same color, depending on the type of light source, such as sunlight such as morning sun, sunset, or daylight, or fluorescent light, they may appear to be different colors, a phenomenon known as "metamerism," which can destroy the sense of unity of the design.

[0005] This problem is not limited to the above-mentioned case, but can similarly occur when a first decorative sheet having a first pattern layer formed using a first printing method and a second decorative sheet having a second pattern layer formed using a second printing method different from the first printing method are combined and placed in the same space.

[0006] In view of the above, an object of the present invention is to make it possible to suppress the occurrence of metamerism even when decorative sheets each having a pattern layer printed using a different printing method are combined and arranged in the same space. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the present invention provides a series of decorative sheets in which a first decorative sheet having a first pattern layer formed using a first printing method and a second decorative sheet having a second pattern layer formed using a second printing method different from the first printing method are combined and arranged in the same space, and is characterized in that the pigment contained in the first pattern layer of the first decorative sheet and the pigment contained in the second pattern layer of the second decorative sheet are made of the same material.

[0008] In addition, in the decorative sheet series described above, the present invention is preferably such that the first printing method is plate-based printing ink and the second printing method is plateless printing ink.

[0009] In addition, in the decorative sheet series described above, the present invention is preferably such that the plate printing is gravure printing and the plateless printing is inkjet printing.

[0010] Furthermore, in order to solve the above-mentioned problems, the present invention is a building that utilizes the above-mentioned series of decorative sheets, wherein the same space is the interior of a room, the first decorative sheet is provided on one of the wall surfaces and floor surfaces of the room, and the second decorative sheet is provided on the other of the wall surfaces and floor surfaces of the room. [Effects of the Invention]

[0011] According to the present invention, since the pigment contained in the first pattern layer of the first decorative sheet and the pigment contained in the second pattern layer of the second decorative sheet are the same material, the occurrence of metamerism can be suppressed even when they are combined and arranged in the same space. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is an explanatory diagram showing the schematic configuration of a main embodiment of a building using a series of decorative sheets according to the present invention. [Figure 2] FIG. 2 is a cross-sectional view showing the schematic structure of a decorative wall sheet in the decorative sheet series of FIG. 1. [Figure 3] FIG. 2 is a cross-sectional view showing the schematic structure of a decorative floor sheet in the decorative sheet series of FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0013] The following describes a series of embodiments of the decorative sheet according to the present invention with reference to the drawings. Note that the present invention is not limited to the embodiments described below with reference to the drawings, and various technical matters described in each embodiment can be appropriately combined or substituted as needed.

[0014] [Main embodiment] The main embodiments of the decorative sheet series according to the present invention will be described with reference to FIGS.

[0015] <Overall composition of the decorative sheet series> As shown in Figure 1, a wall decorative sheet 110, which is a first decorative sheet having a first pattern layer formed by gravure printing, which is a plate-based printing method of a first printing method, is disposed on a wall surface 11 inside a room 10 of a building that is in the same space. A floor decorative sheet 120, which is a second decorative sheet having a second pattern layer formed by inkjet printing, which is a plateless printing method of a second printing method, is disposed on a floor surface 12 of the room 10.

[0016] In this embodiment, a combination decorative sheet 100, which is a series of decorative sheets, is configured by a wall decorative sheet 110 and a floor decorative sheet 120 arranged inside a room 10 of such a building. In addition, a window 11a is installed on the wall surface 11 to let in outside light into the room 10. A lighting fixture 13a that illuminates the interior of the room 10 is installed on the ceiling surface 13 of the room 10.

[0017] <Wall Decorative Sheet 110> As shown in FIG. 2, the wall decorative sheet 110 has a wall colored resin layer 112, which is a first colored resin layer, provided on a wall base material 111, which is a first base material. A wall pattern layer 113, which is a first pattern layer, is provided on the wall colored resin layer 112. A wall transparent adhesive layer 114, which is a first transparent adhesive layer, is provided on the wall pattern layer 113. A wall transparent resin layer 115, which is a first transparent resin layer, is provided on the wall transparent adhesive layer 114. A wall surface protective layer 116, which is a first surface protective layer, is provided on the wall transparent resin layer 115.

[0018] That is, the wall decorative sheet 110 is formed by laminating a wall substrate 111, a wall pattern layer 113, and a wall transparent resin layer 115 in this order. A wall colored resin layer 112 is provided between the wall substrate 111 and the wall pattern layer 113. A wall transparent adhesive layer 114 is provided between the wall pattern layer 113 and the wall transparent resin layer 115. A wall surface protective layer 116 is provided on the wall transparent resin layer 115.

[0019] <Wall base material 111> A film made of a thermoplastic resin mixed with various additives is applied to the wall substrate 111. Examples of the thermoplastic resin include polyolefin resins such as polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, ethylene-α-olefin copolymer, and propylene-α-olefin copolymer; polyester-based resins such as polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate, polyethylene naphthalate, polyethylene terephthalate-isophthalate copolymer, 1,4-cyclohexanedimethanol copolymerized polyethylene terephthalate, polyarylate, and polycarbonate; and olefin-based resins such as ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-(meth)acrylic acid (ester) copolymer, and ethylene-unsaturated carboxylic acid copolymer metal neutralized product (ionomer). Examples of the resin include polyolefin resins such as copolymer resins, acrylic resins such as poly(meth)acrylonitrile, polymethyl(meth)acrylate, polyethyl(meth)acrylate, polybutyl(meth)acrylate, and polyacrylamide, polyamide resins such as 6-nylon, 6,6-nylon, and 6,10-nylon, styrene resins such as polystyrene, AS resin, and ABS resin, vinyl resins such as polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal, and polyvinyl butyral, fluorine-based resins such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, and ethylene-perfluoroalkyl vinyl ether copolymer, and mixtures, copolymers, composites, and laminates of two or more of these resins.

[0020] The wall base material 111 is appropriately mixed with various additives such as heat stabilizers, light stabilizers, light absorbers, lubricants, plasticizers, inorganic fillers, colorants, and pigments in order to improve various properties as needed.

[0021] <Colored resin layer 112 for walls> The wall colored resin layer 112 is made opaque by incorporating colorants such as organic or inorganic pigments into the thermoplastic resin, enabling it to exhibit hiding properties. Examples of thermoplastic resins include those listed above. Preferred colorants are inorganic pigments, such as calcium carbonate, titanium oxide, carbon black, silica, chromium, antimony, titanium composites, and various other oxides.

[0022] The wall colored resin layer 112 may contain various additives as needed, such as fillers, ultraviolet absorbers, light stabilizers, heat stabilizers, antioxidants, antistatic agents, lubricants, flame retardants, antibacterial agents, antifungal agents, antifriction agents, light scattering agents, and gloss adjusters.

[0023] <Wall pattern layer 113> The wall pattern layer 113 is formed by gravure printing a pattern such as wood grain with gravure ink on the wall colored resin layer 112. The gravure ink is a mixture of a binder, a pigment, a liquid medium, various additives, etc.

[0024] Examples of binders include soluble nitrocellulose, cellulose, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polyurethane, acrylic, polyester, etc., either alone or modified. Binders can be aqueous, solvent-based, or emulsion types, and can be one-component or two-component types using a curing agent, as needed. Furthermore, types that harden when exposed to ultraviolet light or electron beams can also be used.

[0025] Examples of pigments include condensed azo, insoluble azo, quinacridone, isoindoline, anthraquinone, imidazolone, cobalt, phthalocyanine, carbon, titanium oxide, iron oxide, and pearl pigments such as mica.

[0026] <Transparent adhesive layer for walls 114> The wall transparent adhesive layer 114 is a layer for joining the wall pattern layer 113 and the wall transparent resin layer 115. The composition of the wall transparent adhesive layer 114 is not particularly limited, but examples include transparent resin materials such as urethane-based, acrylic-based, acrylic silicone-based, fluorine-based, epoxy-based, and polyester-based. From these resin materials, a transparent material that has excellent adhesion between the wall pattern layer 113 and the wall transparent resin layer 115 is appropriately selected.

[0027] <Transparent resin layer for walls 115> A film in which various additives are mixed into a transparent resin is applied as the wall transparent resin layer 115. There are no particular limitations on the transparent resin material that constitutes the wall transparent resin layer 115, and materials similar to the transparent resin layer that is provided on the wall pattern layer in conventional wall decorative sheets can be applied, such as the thermoplastic resins mentioned above.

[0028] In order to improve various properties as required, the wall transparent resin layer 115 is appropriately mixed with various additives such as ultraviolet absorbers, antioxidants, heat stabilizers, flame retardants, antiblocking agents, catalyst accelerators, colorants, light scattering agents, gloss adjusters, etc. In particular, it is preferable to mix in an ultraviolet absorber in order to improve weather resistance.

[0029] <Wall surface protection layer 116> The wall surface protective layer 116 is provided for the purpose of imparting functions (surface properties) such as abrasion resistance, water resistance, weather resistance, scratch resistance, stain resistance, and design, and is formed, for example, by using a coating method, etc. The wall surface protective layer 116 has a transparency (for example, colorless transparent, colored transparent, translucent, etc.) that allows the various layers located on the back side to be seen through.

[0030] The wall surface protective layer 116 preferably contains at least one cross-linked resin selected from the group consisting of thermosetting resin, ultraviolet curing resin, and electron beam curing resin, as this improves weather resistance, scratch resistance, and contamination resistance. These resins can be used alone or in combination. That is, it is possible to use a mixture of two or more of the above resins, or to use a mixture of one of the above resins with another resin other than the above.

[0031] To provide weather resistance, the wall surface protective layer 116 preferably contains an ultraviolet absorber such as a benzotriazole, benzoate, benzophenone, triazine, or cyanoacrylate. Furthermore, the wall surface protective layer 116 preferably contains a hindered amine-based light radical scavenger (hindered amine-based light stabilizer) to capture harmful radicals and prevent deterioration of the resin itself due to light, heat, water, etc.

[0032] <Floor Decorative Sheet 120> As shown in Figure 3, the floor decorative sheet 120 has a floor colored resin layer 122, which is a second colored resin layer, provided on a floor base material 121, which is a second base material. A floor pattern layer 123, which is a second pattern layer, is provided on the floor colored resin layer 122. A floor transparent adhesive layer 124, which is a second transparent adhesive layer, is provided on the floor pattern layer 123. A floor transparent resin layer 125, which is a second transparent resin layer, is provided on the floor transparent adhesive layer 124. A floor surface protective layer 126, which is a second surface protective layer, is provided on the floor transparent resin layer 125.

[0033] That is, the floor decorative sheet 120 is made by laminating a floor base material 121, a floor pattern layer 123, and a floor transparent resin layer 125 in this order. A floor colored resin layer 122 is provided between the floor base material 121 and the floor pattern layer 123. A floor transparent adhesive layer 124 is provided between the floor pattern layer 123 and the floor transparent resin layer 125. A floor surface protective layer 126 is provided on the floor transparent resin layer 125.

[0034] <Floor base material 121> The floor substrate 121 is made of a film of a thermoplastic resin mixed with various additives, similar to the wall substrate 111. Similar to the wall substrate 111, the floor substrate 121 is mixed with various additives such as heat stabilizers, light stabilizers, light absorbers, lubricants, plasticizers, inorganic fillers, colorants, and pigments as appropriate to improve various properties as needed.

[0035] <Colored resin layer 122 for flooring> The floor colored resin layer 122 is opaquely colored and can exhibit hiding properties by adding a coloring agent such as an organic pigment or an inorganic pigment to the thermoplastic resin, similar to the wall colored resin layer 112. As with the wall colored resin layer 112, the thermoplastic resin and coloring agent can be those described above.

[0036] Like the wall colored resin layer 112, the floor colored resin layer 122 may contain various additives as needed, such as fillers, ultraviolet absorbers, light stabilizers, heat stabilizers, antioxidants, antistatic agents, lubricants, flame retardants, antibacterial agents, antifungal agents, antifriction agents, light scattering agents, and gloss adjusters.

[0037] <Floor pattern layer 123> The floor pattern layer 123 is formed by inkjet printing a pattern such as wood grain with inkjet ink on the floor colored resin layer 122. The inkjet ink is a mixture of a liquid medium, a pigment, various additives, etc.

[0038] Inkjet inks can be water-based, solvent-based, or emulsion types, and can be either one-component or two-component with a curing agent, depending on the need. Types that cure when exposed to ultraviolet light or electron beams can also be used.

[0039] As with the gravure ink of the wall pattern layer 113, examples of pigments include condensed azo, insoluble azo, quinacridone, isoindoline, anthraquinone, imidazolone, cobalt, phthalocyanine, carbon, titanium oxide, iron oxide, mica and other pearl pigments.

[0040] Here, the inkjet ink used in the inkjet printing to form the floor pattern layer 123 of the floor decorative sheet 120 and the gravure ink used in the gravure printing to form the wall pattern layer 113 of the wall decorative sheet 110 use exactly the same pigment.

[0041] <Transparent adhesive layer for floors 124> The floor transparent adhesive layer 124 is a layer for bonding the floor pattern layer 123 and the floor transparent resin layer 125. Like the wall transparent adhesive layer 114, the composition of the floor transparent adhesive layer 124 is not particularly limited, but examples include transparent resin materials such as urethane-based, acrylic-based, acrylic silicone-based, fluorine-based, epoxy-based, and polyester-based. From these resin materials, a transparent material that has excellent adhesion between the floor pattern layer 123 and the floor transparent resin layer 125 is appropriately selected.

[0042] <Transparent resin layer 125 for flooring> The floor transparent resin layer 125 is a film in which various additives are mixed into a transparent resin, similar to the wall transparent resin layer 115. The transparent resin material constituting the floor transparent resin layer 125 is not particularly limited, similar to the wall transparent resin layer 115, and materials similar to the transparent resin layer provided on the floor pattern layer in conventional floor decorative sheets can be used, such as the thermoplastic resins described above.

[0043] In order to improve various properties as needed, the floor transparent resin layer 125 is appropriately mixed with various additives such as ultraviolet absorbers, antioxidants, heat stabilizers, flame retardants, antiblocking agents, catalyst accelerators, colorants, light scattering agents, gloss adjusters, etc., in the same manner as the wall transparent resin layer 115. In particular, it is preferable to mix in an ultraviolet absorber in order to improve weather resistance.

[0044] <Floor surface protection layer 126> The floor surface protective layer 126, like the wall surface protective layer 116, is provided for the purpose of imparting functions (surface properties) such as abrasion resistance, water resistance, weather resistance, scratch resistance, stain resistance, and design, and is formed, for example, by using a coating method, etc. Like the wall surface protective layer 116, the floor surface protective layer 126 has a transparency (for example, colorless transparent, colored transparent, translucent, etc.) that allows various layers located on the back side to be seen through.

[0045] Like the wall surface protective layer 116, the floor surface protective layer 126 preferably contains at least one crosslinked resin selected from the group consisting of thermosetting resin, ultraviolet curing resin, and electron beam curing resin, as this improves weather resistance, scratch resistance, and contamination resistance. These resins can be used alone or in combination. That is, it is possible to mix two or more of the above resins, or to mix one of the above resins with another resin.

[0046] To provide weather resistance, the floor surface protective layer 126 preferably contains an ultraviolet absorber such as a benzotriazole, benzoate, benzophenone, triazine, or cyanoacrylate, similar to the wall surface protective layer 116. Furthermore, to capture harmful radicals and prevent deterioration of the resin itself due to light, heat, water, etc., the floor surface protective layer 126 preferably contains a hindered amine light radical scavenger (hindered amine light stabilizer), similar to the wall surface protective layer 116.

[0047] <Action and effect of combination decorative sheet 100> In the combined decorative sheet 100 according to this embodiment, the gravure ink pigment of the gravure-printed wall pattern layer 113 of the wall decorative sheet 110 and the inkjet ink pigment of the inkjet-printed floor pattern layer 123 of the floor decorative sheet 120 are made of the same material. Therefore, even when the walls and floor are viewed by illuminating the interior of the room 10 with sunlight such as morning sun, evening sun, or daylight shining through the window 11a of the wall surface 11, or with various light sources such as fluorescent lights from the lighting fixture 13a on the ceiling surface 13, the walls and floor can be seen to have the same color tone without metamerism, making it possible to maintain a sense of unity in the design.

[0048] Therefore, according to the combined decorative sheet 100 of this embodiment, even if a wall decorative sheet 110 having a wall pattern layer 113 gravure-printed with gravure ink and a floor decorative sheet 120 having a floor pattern layer 123 inkjet-printed with inkjet ink are combined and installed on the wall surface 11 and floor surface 12 of a room 10, respectively, the occurrence of metamerism can be suppressed.

[0049] Furthermore, because the pigment in the wall pattern layer 113 of the wall decorative sheet 110 and the pigment in the floor pattern layer 123 of the floor decorative sheet 120 are made of the same material, it is possible to make the rate of deterioration over time the wall pattern layer 113 of the wall decorative sheet 110 and the floor pattern layer 123 of the floor decorative sheet 120 the same. As a result, even if the printing inks are printed using different methods, the same color tone can be seen over a long period of time, and a sense of unity in the design can be maintained over a long period of time.

[0050] A combined decorative sheet 100 of such a wall decorative sheet 110 and a floor decorative sheet 120 is constructed, for example, as follows: Decorative sheets using the same pigment are linked together among various types of wall decorative sheets and floor decorative sheets to form a series of decorative sheets. This allows for easy selection of a desired wall (or floor) decorative sheet and a floor (or wall) decorative sheet using the same pigment. Therefore, such a series of decorative sheets makes it easy to construct a combined decorative sheet that can suppress the occurrence of metamerism.

[0051] [Other embodiments] In the above-described embodiment, the wall decorative sheet 110 is described as being formed by laminating the wall substrate 111, the wall colored resin layer 112, the wall pattern layer 113, the wall transparent adhesive layer 114, the wall transparent resin layer 115, and the wall surface protective layer 116 in this order, but the present invention is not limited to this. As another embodiment, for example, depending on the types of the wall substrate 111, the wall pattern layer 113, and the wall transparent resin layer 115, it is also possible to use a wall decorative sheet that omits the wall colored resin layer 112, the wall transparent adhesive layer 114, and the wall surface protective layer 116.

[0052] In the above-described embodiment, the decorative floor sheet 120 is described as being formed by laminating the floor base material 121, the floor colored resin layer 122, the floor pattern layer 123, the floor transparent adhesive layer 124, the floor transparent resin layer 125, and the floor surface protective layer 126 in this order, but the present invention is not limited to this. In other embodiments, for example, depending on the types of the floor base material 121, the floor pattern layer 123, and the floor transparent resin layer 125, it is also possible to use a decorative floor sheet that omits the floor colored resin layer 122, the floor transparent adhesive layer 124, and the floor surface protective layer 126.

[0053] In the above-described embodiment, the wall decorative sheet 110 is described as being formed by laminating the thermoplastic resin wall substrate 111, the wall pattern layer 113, and the thermoplastic resin wall transparent resin layer 115 in this order, but the present invention is not limited to this. As other embodiments, for example, it is possible to use a wall decorative sheet having a wall substrate or a wall transparent resin layer made of other resins, and it is also possible to use a wall decorative sheet having a wall substrate made of paper, wood, metal, etc.

[0054] Here, for example, when titanium paper, which is paper incorporating titanium dioxide, is applied to a wall substrate, it is possible to construct a wall decorative sheet by providing a wall pattern layer 113 on the wall substrate and then providing a transparent thermosetting resin such as melamine resin to form a wall transparent resin layer.

[0055] In the above-described embodiment, the decorative floor sheet 120 is described as being formed by laminating the thermoplastic resin floor substrate 121, the floor pattern layer 123, and the thermoplastic resin transparent floor resin layer 125 in this order, but the present invention is not limited to this. In other embodiments, for example, a decorative floor sheet having a floor substrate or a transparent floor resin layer made of other resins can be used, and it is also possible to use a decorative floor sheet having a floor substrate made of paper, wood, metal, etc.

[0056] Here, for example, when titanium paper, which is paper with titanium dioxide incorporated, is applied to a floor substrate, it is possible to form a floor decorative sheet by providing a floor pattern layer 123 on the floor substrate and then providing a transparent thermosetting resin such as melamine resin to form a floor transparent resin layer.

[0057] In the above-described embodiment, the wall decorative sheet 110 is described as having the wall pattern layer 113 formed with gravure ink by gravure printing, but the present invention is not limited to this. In other embodiments, it is also possible to have a wall decorative sheet in which the wall pattern layer is formed with plate-based printing ink by other plate-based printing methods such as screen printing, offset printing, gravure offset printing, etc.

[0058] In the above-described embodiment, the decorative floor sheet 120 is described as having the floor pattern layer 123 formed with inkjet ink by inkjet printing, but the present invention is not limited to this. As another embodiment, it is also possible to have a decorative floor sheet in which the floor pattern layer is formed with plateless printing ink by another plateless printing method such as laser printing.

[0059] Furthermore, in the above-described embodiment, a case has been described in which a decorative wall sheet on which a wall pattern layer has been formed using plate-based printing ink by a plate-based printing method and a decorative floor sheet on which a floor pattern layer has been formed using plateless printing ink by a plateless printing method has been used, but the present invention is not limited to this. As another embodiment, for example, it is also possible to use a decorative wall sheet on which a wall pattern layer has been formed using plateless printing ink by a plateless printing method and a decorative floor sheet on which a floor pattern layer has been formed using plate-based printing ink by a plate-based printing method.

[0060] Furthermore, in the above-described embodiment, a case has been described in which a wall decorative sheet is placed on the wall surface 11 of a room 10 of a building, and a floor decorative sheet is placed on the floor surface 12 of the same space that forms the room 10, but the present invention is not limited to this. As another embodiment, for example, even in a case in which a wall decorative sheet is placed on the wall surface of an outdoor stage, and a floor decorative sheet is placed on the floor surface of the same space that forms the stage, the same effects as in the above-described embodiment can be obtained.

[0061] In addition, in the above-described embodiment, a case where a wall decorative sheet is placed on a wall surface and a floor decorative sheet is placed on a floor surface forming the same space is described, but the present invention is not limited to this. As another embodiment, for example, even if a chair with a first decorative sheet on its surface and a table with a second decorative sheet on its surface are placed in the same space, the same effects as in the above-described embodiment can be obtained.

[0062] In other words, the present invention can be applied in the same manner as the above-mentioned embodiment and can obtain the same effects as the above-mentioned embodiment when a first decorative sheet having a first pattern layer formed using a first printing method and a second decorative sheet having a second pattern layer formed using a second printing method different from the first printing method are combined and arranged in the same space. [Example]

[0063] Examples of a series of decorative sheets according to the present invention will be specifically described below, but the present invention is not limited to the following examples.

[0064] [Preparation of test specimens and comparison specimens] <Test specimen A1> The first substrate was titanium paper (basis weight 80 g / m) manufactured by KJ Specialty Paper Co., Ltd. 2 ) was prepared, and a wood grain pattern was gravure printed onto it using gravure inks (manufactured by Toyo Ink Co., Ltd.) of the respective colors containing the pigments shown in Table 1 below to form a first pattern layer. Subsequently, this was impregnated with melamine formaldehyde resin and heated and pressed to form a first transparent resin layer. This produced first decorative sheet specimen A1.

[0065] <Test specimen A2> Specimen A2 of the first decorative sheet was produced under the same conditions as specimen A1, except that a wood grain pattern was gravure printed to form a first pattern layer using gravure inks of the respective colors (manufactured by Toyo Ink Co., Ltd.) containing the pigments shown in Table 1 below.

[0066] <Test specimen A3> Specimen A3 of the first decorative sheet was produced under the same conditions as specimen A1, except that a wood grain pattern was gravure printed to form a first pattern layer using gravure inks of the respective colors (manufactured by Toyo Ink Co., Ltd.) containing the pigments shown in Table 1 below.

[0067] <Test specimen A4> Specimen A4 of the first decorative sheet was produced under the same conditions as specimen A1, except that a wood grain pattern was gravure printed to form a first pattern layer using gravure inks of the respective colors (manufactured by Toyo Ink Co., Ltd.) containing the pigments shown in Table 1 below.

[0068] <Test specimen B1> The second substrate was titanium paper (basis weight 80 g / m) manufactured by KJ Specialty Paper Co., Ltd., the same as the first substrate. 2) was prepared, and a wood grain pattern was inkjet printed onto it using inkjet inks (manufactured by Toyo Ink Co., Ltd.) of the various colors containing the pigments shown in Table 1 below to form a second pattern layer. This was then impregnated with melamine formaldehyde resin and heated and pressed to form a second transparent resin layer. This produced second decorative sheet specimen B1.

[0069] <Test specimen B2> A second decorative sheet specimen B2 was prepared under the same conditions as specimen B1, except that a wood grain pattern was inkjet printed using inkjet inks of the respective colors (manufactured by Toyo Ink Co., Ltd.) containing the pigments shown in Table 1 below to form a second pattern layer.

[0070] <Test specimen B3> A second decorative sheet specimen B3 was prepared under the same conditions as specimen B1, except that a wood grain pattern was inkjet printed using inkjet inks of the respective colors (manufactured by Toyo Ink Co., Ltd.) containing the pigments shown in Table 1 below to form a second pattern layer.

[0071] <Test specimen B4> A second decorative sheet specimen B4 was prepared under the same conditions as specimen B1, except that a wood grain pattern was inkjet printed using inkjet inks of the respective colors (manufactured by Toyo Ink Co., Ltd.) containing the pigments shown in Table 1 below to form a first pattern layer.

[0072] [Table 1]

[0073] Regarding advance arrangements: In preparing specimens A1 to A4 and B1 to B4, the color of each specimen was adjusted so that when irradiated with light (color temperature 6504K) from a D65 light source specified by the International Commission on Illumination (CIE), the color difference dE00 measured using a spectrodensitometer "X-Rite (registered trademark) eXact (product name)" manufactured by X-Rite, Inc., USA, based on the color difference formula specified by CIE DE2000, would be less than 1.0.

[0074] [Evaluation method] Metamerism When light from a CIE-specified D50 light source (color temperature 5003K) was irradiated onto test specimens A1 to A4 and B1 to B4, the color difference dE00 of Examples 1 to 6, which combined the decorative sheet series as shown in Table 2 below, was determined using an X-Rite (registered trademark) eXact (product name) spectrodensitometer manufactured by X-Rite Corporation of the United States. The results are shown in Table 2 below. In Table 2, "◯" indicates that the color difference dE00 was less than 1.0, and "×" indicates that the color difference dE00 was 1.0 or greater.

[0075] <Accelerated UV Degradation Test> Test specimens A1 to A4 and B1 to B4 were irradiated with ultraviolet (UV) light using a "U48 (model number)" ultraviolet fading meter manufactured by Suga Test Instruments Co., Ltd. under the following conditions, and then irradiated with light from a D65 light source. A spectrodensitometer "X-Rite (registered trademark) eXact (product name)" manufactured by X-Rite Corporation in the United States was used to determine the color difference dE00 for Examples 1 to 6, which combined the decorative sheet series as shown in Table 2 below. The results are shown in Table 2 below. In Table 2, "○" indicates that the color difference dE00 was less than 1.0, and "×" indicates that the color difference dE00 was 1.0 or greater.

[0076] 《UV irradiation conditions》 Black Panel Temperature (BPT): 63°C ·Humidity: 50%RH ·Illuminance: 500W / m 2 Irradiation time: 200 hours

[0077] [Evaluation results] The evaluation results of Examples 1 to 6 are shown in Table 2 below.

[0078] [Table 2]

[0079] As can be seen from Table 2, in Examples 2 to 5 of the combination decorative sheet series, which is a combination of test specimens using inks with different pigments for the first decorative sheet and the second decorative sheet, the color difference dE00 for the different light sources was 1.0 or more, resulting in a metamerism evaluation of "×", and the color difference dE00 after UV degradation was also 1.0 or more, resulting in an evaluation of "×".

[0080] In contrast, in Examples 1 and 6 of the combination decorative sheet series, which combine test specimens that use the same pigment ink for the first decorative sheet and the second decorative sheet, the color difference dE00 for different light sources was less than 1.0, the metamerism was evaluated as "○", and the color difference dE00 after UV degradation was also 1.0 or more, and the evaluation was also "○".

[0081] From the above, it can be said that the effects of the present invention have been confirmed. [Industrial Applicability]

[0082] The decorative sheet series of the present invention can suppress the occurrence of metamerism even when combined and arranged in the same space, and can therefore be used extremely beneficially in various industries, including the construction industry. [Explanation of symbols]

[0083] 10 rooms 11 Wall 11a Window 12 Floor 13 Ceiling surface 13a Lighting equipment 100 Combination Decorative Sheets 110 Wall decorative sheet 111 Wall base material 112 Colored resin layer for walls 113 Wall pattern layer 114 Transparent adhesive layer for walls 115 Transparent resin layer for walls 116 Wall surface protection layer 120 Floor decorative sheet 121 Floor material 122 Colored resin layer for flooring 123 Floor pattern layer 124 Transparent adhesive layer for floors 125 Transparent resin layer for flooring 126 Floor surface protection layer

Claims

1. a first decorative sheet on which a first design layer is formed by a first printing method; a second decorative sheet provided with a second design layer by a second printing method different from the first printing method; A series of decorative sheets arranged in the same space, The pigment contained in the first design layer of the first decorative sheet and the pigment contained in the second design layer of the second decorative sheet are made of the same material. A series of decorative sheets characterized by

2. the first printing method is plate printing, The second printing method is plateless printing. A series of decorative sheets according to claim 1.

3. The plate printing is gravure printing, The plateless printing is inkjet printing. A series of decorative sheets according to claim 2.

4. A building utilizing the decorative sheet series according to any one of claims 1 to 3, The same space is the interior of a room, the first decorative sheet is provided on one of a wall surface and a floor surface of the room, The second decorative sheet is provided on the other of the wall surface and the floor surface of the room. A building characterized by:

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