WO2017057673A1 - 化粧シート及び化粧板 - Google Patents
化粧シート及び化粧板 Download PDFInfo
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- WO2017057673A1 WO2017057673A1 PCT/JP2016/079007 JP2016079007W WO2017057673A1 WO 2017057673 A1 WO2017057673 A1 WO 2017057673A1 JP 2016079007 W JP2016079007 W JP 2016079007W WO 2017057673 A1 WO2017057673 A1 WO 2017057673A1
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- WIPO (PCT)
- Prior art keywords
- protective layer
- decorative sheet
- surface protective
- layer
- rsm
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- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
Definitions
- the present invention relates to a decorative sheet and a decorative board.
- decorative sheets are laminated on the surfaces of various articles in order to impart design properties.
- a decorative sheet is laminated on a surface of a wall covering material used for a wall surface of a building, a floor decorative material used for a floor surface, and the like.
- a decorative sheet that solves the above-mentioned problems, a decorative sheet is disclosed that makes it difficult for the contaminants to enter the concave portion by defining the surface irregularity shape, and as a result, prevents deterioration in easy-to-clean (easy to clean).
- Patent Document 1 a decorative sheet that makes it difficult for the contaminants to enter the concave portion by defining the surface irregularity shape, and as a result, prevents deterioration in easy-to-clean (easy to clean).
- the above-mentioned decorative sheet is also a decorative sheet excellent in easiness of sweeping, but there is room for further improvement with respect to facilitating removal of dirt due to adhesion of powdery fine particles.
- the decorative sheet when used in a living environment, scratches may occur due to the impact of objects falling on the surface of the decorative sheet. For this reason, the decorative sheet is required to have impact resistance.
- the present invention when used in a living environment, easily removes dirt due to adhesion of pollutants that are difficult to clean, such as powdery fine particles, and is excellent in easy cleaning.
- An object of the present invention is to provide a decorative sheet that is excellent in impact resistance.
- a decorative sheet having a surface protective layer on the outermost surface can achieve the above object when the surface shape of the surface protective layer is a specific shape.
- the headline and the present invention were completed.
- a decorative sheet having a surface protective layer on the outermost surface (1) Arithmetic average roughness Ra (i) measured along an arbitrary direction of the surface of the surface protective layer by a measurement method according to JIS B0601: 2001 under measurement conditions according to JIS B0633: 2001, The value of Ra (i) / Ra (ii) calculated by arithmetic mean roughness Ra (ii) measured along a direction perpendicular to the arbitrary direction is 0.62 or more and 1.63 or less.
- the value of RSm (i) / RSm (ii) calculated by i) and the average length RSm (ii) of the roughness curve element measured along the direction perpendicular to the arbitrary direction is 0. .75 or more and 1.33 or less, (3)
- the arithmetic average roughness Ra of the surface of the surface protective layer measured under the conditions of a cut-off value ( ⁇ c) of 0.08 mm and an evaluation length of 0.4 mm by a measurement method based on JIS B0601: 2001 is 0.
- the average length RSm of the roughness curve element measured under the conditions of .40 ⁇ m or less and a cutoff value ( ⁇ c) of 0.08 mm and an evaluation length of 0.4 mm is 22.90 ⁇ m or more.
- Makeup sheet 2.
- Item 2. The decorative sheet according to Item 1, wherein the resin constituting the surface protective layer is an ionizing radiation curable resin. 3.
- Item 3. The decorative sheet according to Item 1 or 2, wherein the surface protective layer contains an inorganic filler. 4).
- Item 4. The decorative sheet according to Item 3, wherein the inorganic filler is at least one selected from the group consisting of silica, alumina, and glass powder. 5.
- Item 5 The decorative sheet according to any one of Items 1 to 4, further comprising a gloss adjusting layer. 6).
- Item 6. A decorative board having an adherend on the surface opposite to the surface protective layer of the decorative sheet according to any one of Items 1 to 5.
- the decorative sheet of the present invention When used in a living environment, the decorative sheet of the present invention is easy to remove stains due to adhering powdery fine particles, such as when spilling pollutants used on a daily basis, and is excellent in easy cleaning. And it is excellent in impact resistance. Therefore, the decorative sheet of the present invention can be suitably used particularly as a decorative sheet for floors.
- the decorative sheet of the present invention is a decorative sheet having a surface protective layer on the outermost surface, (1) Arithmetic average roughness Ra (i) measured along any direction of the surface of the surface protective layer by a measurement method based on JIS B0601: 2001 under measurement conditions based on JIS B0633: 2001, The value of Ra (i) / Ra (ii) calculated by arithmetic mean roughness Ra (ii) measured along a direction perpendicular to the arbitrary direction is 0.62 or more and 1.63 or less.
- the average length RSm of the roughness curve elements measured under the conditions of 40 ⁇ m or less and a cutoff value ( ⁇ c) of 0.08 mm and an evaluation length of 0.4 mm is 22.90 ⁇ m or more. .
- the decorative sheet having the above characteristics is easy to remove stains due to adhering powdery fine particles, such as when spilling pollutants used on a daily basis, and has excellent easy-to-sweep properties. And excellent in impact resistance. Therefore, the decorative sheet of the present invention can be suitably used particularly as a decorative sheet for floors.
- FIG. 1 is a cross-sectional view showing an example of the sheet of the present invention.
- the sheet 1 of the present invention illustrated in FIG. 1 has a surface protective layer 9 on the outermost surface, and the surface protective layer 9 is formed with a wavy shape as an uneven pattern. Further, a fine surface irregularity shape 10 exists on the entire surface of the surface protective layer 9.
- the decorative sheet of the present invention specifies Ra (i) / Ra (ii) defined by (1) above and RSm (i) / RSm (ii) defined by (2) above. By setting it as the range, the uneven pattern on the surface of the surface protective layer 9 has a specific shape. Further, the cut-off value ( ⁇ c) defined by the above (3) is 0.08 mm, the evaluation length is 0.
- the fine surface irregularity shape 10 on the surface of the surface protective layer 9 has a specific shape, so that it is cleaned like powdery fine particles. It is easy to remove stains due to the adhesion of difficult contaminants, and it is possible to obtain a decorative sheet having excellent easy-to-sweep properties and a decorative sheet having excellent impact resistance.
- uneven pattern examples include a cloth surface texture, a painted wall pattern, a leather texture, a check pattern, a bark pattern, a grain pattern, a stone plate surface unevenness (such as a granite cleaved surface), and a moth eye pattern.
- the surface is a so-called “front surface”, and when the decorative sheet of the present invention is used by being laminated on an adherend or the like, a surface in contact with the adherend Is a surface on the opposite side and is a surface visually recognized after lamination.
- the direction of the surface of the decorative sheet of the present invention may be referred to as “front” or “up”, and the opposite side may be referred to as “back” or “down”.
- arbitrary means that there is no particular rule and it can be freely determined.
- the “arbitrary direction” of the surface of the surface protective layer is not limited to a specific direction such as a longitudinal direction or a short direction of the decorative sheet, and indicates one direction of the surface of the surface protective layer which may be any direction. Yes.
- the decorative sheet of the present invention has a surface protective layer on the outermost surface, and the specific layer structure is not limited as long as the surface protective layer has the surface shapes of (1) to (3) above.
- a decorative sheet formed by laminating a pattern layer, an adhesive layer, a transparent resin layer, a primer layer, and a surface protective layer in this order on a base sheet is exemplified.
- each layer will be specifically described with the decorative sheet having such a layer configuration as a representative example.
- the decorative sheet of the present invention has a surface protective layer.
- the surface protective layer is provided as the outermost layer of the decorative sheet.
- the decorative sheet of the present invention is (1) arithmetic average roughness measured along an arbitrary direction of the surface of the surface protective layer by a measurement method according to JIS B 0601: 2001 under measurement conditions according to JIS B 0633: 2001.
- the value of Ra (i) / Ra (ii) calculated by Ra (i) and the arithmetic average roughness Ra (ii) measured along the direction perpendicular to the arbitrary direction is 0.62. It is 1.63 or less.
- Ra (i) / Ra (ii) is out of the above range, impact resistance is lowered.
- Ra (i) / Ra (ii) is preferably 0.63 or more and 1.60 or less, and more preferably 0.64 or more and 1.56 or less.
- Ra (i) / Ra (ii) is a value measured by the following measurement method.
- the range of 5 cm in length and 5 cm in width on the surface of the surface protective layer of the decorative sheet is arbitrarily selected.
- 5 points are arbitrarily selected, and the arithmetic average roughness Ra is measured by a measuring method based on JIS B0601: 2001 under measuring conditions based on JIS B0633: 2001 in an arbitrary fixed direction.
- Let the average value of the points be Ra (i).
- Ra (i) / Ra (ii) is calculated from the values of Ra (i) and Ra (ii).
- the decorative sheet of the present invention is (2) a roughness curve element measured along an arbitrary direction of the surface of the surface protective layer by a measurement method according to JIS B 0601: 2001 under measurement conditions according to JIS B 0633: 2001.
- the value of ii) is not less than 0.75 and not more than 1.33.
- RSm (i) / RSm (ii) is out of the above range, the impact resistance is lowered.
- RSm (i) / RSm (ii) is preferably 0.78 or more and 1.28 or less, and more preferably 0.80 or more and 1.25 or less.
- said RSm (i) / RSm (ii) is a value measured with the following measuring methods.
- the range of 5 cm in length and 5 cm in width on the surface of the surface protective layer of the decorative sheet is arbitrarily selected.
- RSm (i) / RSm (ii) is calculated from the measured values of RSm (i) and RSm (ii).
- the decorative sheet of the present invention is (3) an arithmetic operation in which the surface of the surface protective layer is measured under the conditions of a cutoff value ( ⁇ c) of 0.08 mm and an evaluation length of 0.4 mm by a measuring method based on JIS B0601: 2001.
- Average roughness Ra is 0.40 ⁇ m or less.
- the Ra is preferably 0.35 or less.
- the lower limit value of the arithmetic average roughness Ra measured under the conditions of the cutoff value ( ⁇ c) of 0.08 mm and the evaluation length of 0.4 mm is not particularly limited, but is preferably 0.15 ⁇ m, more preferably 0.10 ⁇ m. .
- the decorative sheet of the present invention can exhibit even more easy sweepability.
- the decorative sheet of the present invention is (3) a rough surface measured on the surface of the surface protective layer under the conditions of a cutoff value ( ⁇ c) of 0.08 mm and an evaluation length of 0.4 mm by a measuring method based on JIS B0601: 2001.
- the average length RSm of the saddle curve elements is 22.90 ⁇ m or more.
- the RSm is preferably 30.00 ⁇ m or more.
- the upper limit value of the average length RSm of the roughness curve element measured under the conditions of the cut-off value ( ⁇ c) of 0.08 mm and the evaluation length of 0.4 mm is not particularly limited, but is preferably 80.00 ⁇ m, 00 ⁇ m is more preferable.
- the decorative sheet of the present invention can exhibit even more easy sweepability.
- arithmetic mean roughness Ra and RSm measured on the conditions of the cut-off value ((lambda) c) 0.08mm of the surface protective layer of the said decorative sheet, and evaluation length 0.4mm are measured with the following measuring methods. Value.
- the range of 5 cm in length and 5 cm in width on the surface of the surface protective layer of the decorative sheet is arbitrarily selected.
- 5 points are arbitrarily selected, and the evaluation length is set to 0.4 mm in an arbitrary fixed direction according to JIS B0601: 2001, and the cut-off value of the surface roughness measuring instrument ( ⁇ c ) Is set to 0.08 mm, and the arithmetic average roughness Ra (i) and the average length RSm (i) of the roughness curve elements are measured.
- the surface roughness measuring instrument is selected by arbitrarily selecting five points and setting the evaluation length to 0.4 mm along the direction perpendicular to the direction in which Ra (i) and RSm (i) are measured.
- the resin constituting the surface protective layer is preferably a curable resin such as a thermosetting resin or an ionizing radiation curable resin (for example, an electron beam curable resin).
- a curable resin such as a thermosetting resin or an ionizing radiation curable resin (for example, an electron beam curable resin).
- ionizing radiation curable resins are preferable from the viewpoints of imparting high surface hardness and improving scratch resistance, and excellent productivity.
- thermosetting resins include unsaturated polyester resins, polyurethane resins (including two-component curable polyurethane), epoxy resins, amino alkyd resins, phenol resins, urea resins, diallyl phthalate resins, melamine resins, guanamine resins, and melamines.
- unsaturated polyester resins polyurethane resins (including two-component curable polyurethane)
- epoxy resins include epoxy resins, amino alkyd resins, phenol resins, urea resins, diallyl phthalate resins, melamine resins, guanamine resins, and melamines.
- -Urea cocondensation resin silicon resin, polysiloxane resin and the like.
- a curing agent such as a crosslinking agent and a polymerization initiator and a polymerization accelerator can be added to the resin.
- curing agents isocyanates, organic sulfonates, etc. can be added to unsaturated polyester resins, polyurethane resins, etc., organic amines, etc. can be added to epoxy resins, peroxides such as methyl ethyl ketone peroxide, azoisobutyl nitrile, etc.
- a radical initiator can be added to the unsaturated polyester resin.
- Examples of the method for forming the surface protective layer with a thermosetting resin include a method in which a solution of a thermosetting resin is applied by a coating method such as a roll coating method or a gravure coating method, and is dried and cured.
- the ionizing radiation curable resin is not limited as long as it is a resin that undergoes a crosslinking polymerization reaction upon irradiation with ionizing radiation and changes to a three-dimensional polymer structure.
- one or more prepolymers, oligomers, and monomers having a polymerizable unsaturated bond or epoxy group that can be cross-linked by irradiation with ionizing radiation in the molecule can be used.
- Specific examples include acrylate resins such as urethane acrylate, polyester acrylate, and epoxy acrylate; silicon resins such as siloxane; polyester resins; and epoxy resins.
- Ionizing radiation includes visible light, ultraviolet light (near ultraviolet light, vacuum ultraviolet light, etc.), X-rays, electron beams, ion beams, etc. Among them, ultraviolet light and / or electron beams are desirable.
- an ultra-high pressure mercury lamp As the ultraviolet light source, an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light fluorescent lamp, or a metal halide lamp can be used.
- the wavelength of the ultraviolet light is about 190 nm or more and 380 nm or less.
- various electron beam accelerators such as a cockcroft-wald type, a bandegraft type, a resonant transformer type, an insulating core transformer type, a linear type, a dynamitron type, and a high frequency type can be used.
- the energy of the electron beam is preferably about 100 keV to 1000 keV, and more preferably about 100 keV to 300 keV.
- the irradiation amount of the electron beam is preferably about 2 Mrad or more and 15 Mrad or less.
- the ionizing radiation curable resin is sufficiently cured when irradiated with an electron beam, but it is preferable to add a photopolymerization initiator (sensitizer) when cured by irradiation with ultraviolet rays.
- a photopolymerization initiator sensitizer
- Examples of the photopolymerization initiator in the case of a resin system having a radically polymerizable unsaturated group include acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ether, Michler benzoylbenzoate, Michler ketone, diphenyl sulfide, dibenzyl disulfide. , Diethyl oxide, triphenylbiimidazole, isopropyl-N, N-dimethylaminobenzoate and the like can be used.
- a resin system having a cationic polymerizable functional group for example, at least one kind such as an aromatic diazonium salt, an aromatic sulfonium salt, a metallocene compound, a benzoin sulfonic acid ester, and a freeloxysulfoxonium diallyl iodosyl salt.
- an aromatic diazonium salt an aromatic sulfonium salt, a metallocene compound, a benzoin sulfonic acid ester, and a freeloxysulfoxonium diallyl iodosyl salt.
- the addition amount of the photopolymerization initiator is not particularly limited, but is generally about 0.1 to 10 parts by mass with respect to 100 parts by mass of the ionizing radiation curable resin.
- Examples of the method for forming the surface protective layer with an ionizing radiation curable resin include a method in which a solution of an ionizing radiation curable resin is applied by a coating method such as a gravure coating method or a roll coating method.
- the surface protective layer in the decorative sheet of the present invention preferably contains an inorganic filler together with the resin constituting the surface protective layer.
- the inorganic filler is not particularly limited.
- examples thereof include powders.
- these inorganic fillers at least one of silica, alumina, and glass powder is preferable.
- the content of the inorganic filler in the surface protective layer is from 0.1 parts by mass to 30 parts by mass with respect to 100 parts by mass of the resin (resin component) constituting the surface protective layer from the viewpoint of easy sweepability.
- it is 0.5 parts by mass or more and 30 parts by mass or less, and more preferably 5 parts by mass or more and 30 parts by mass or less.
- the particle diameter (and average particle diameter) of the inorganic filler is not particularly limited.
- the mode diameter (the particle diameter showing the maximum value of the particle diameter distribution, the particle diameter having the largest appearance ratio) is about 1 ⁇ m to 10 ⁇ m.
- a certain inorganic filler is preferable, and an inorganic filler having a mode diameter of 2 ⁇ m or more and 4 ⁇ m or less is more preferable.
- the particle diameter (mode diameter) of the inorganic filler of the present invention is a value measured by a light scattering method.
- the shape of the inorganic filler is not particularly limited, and examples thereof include a spherical shape, a cubic shape, a rod shape, a plate shape, and a needle shape.
- additives such as solvents, dyes, pigments and other colorants, matting agents, fillers such as extenders, antifoaming agents, leveling agents, thixotropic agents are added to the surface protective layer. be able to.
- Examples of a method for forming a surface protective layer containing an ionizing radiation curable resin include, for example, (1) resins such as ionizing radiation curable resins, inorganic fillers as necessary, other resins, ultraviolet absorbers, antibacterial agents, and the like Examples include a method of forming a solution (resin composition for forming a surface protective layer) containing various additives by applying an ionizing radiation curable resin after coating by a coating method such as a gravure coating method or a roll coating method. .
- the thickness of the surface protective layer is not particularly limited and can be appropriately set according to the properties of the final product, but is preferably about 0.1 ⁇ m to 50 ⁇ m, and more preferably about 1 ⁇ m to 20 ⁇ m.
- the base sheet is a layer in which a pattern layer or the like is sequentially laminated on the surface (front surface).
- a sheet (film) formed of a thermoplastic resin is suitable.
- the said base material sheet for example, a
- the base sheet may be colored.
- a coloring material pigment or dye
- a coloring material for coloring
- the colorant for example, inorganic pigments such as titanium dioxide, carbon black and iron oxide, organic pigments such as phthalocyanine blue, and various dyes can be used. These can be selected from one or more known or commercially available ones. Further, the addition amount of the colorant may be appropriately set according to the desired color tone.
- the base sheet contains various additives such as fillers, matting agents, foaming agents, flame retardants, lubricants, antistatic agents, antioxidants, UV absorbers, and light stabilizers as necessary. It may be.
- the thickness of the base sheet can be appropriately set depending on the use of the final product, the method of use, etc., but generally it is preferably 20 ⁇ m or more and 300 ⁇ m or less.
- the base sheet may be subjected to corona discharge treatment on the surface (front surface) as necessary in order to enhance the adhesion of the ink for forming the pattern layer. What is necessary is just to implement the method and conditions of a corona discharge process according to a well-known method. Further, if necessary, the back surface of the base sheet may be subjected to corona discharge treatment, a pattern layer (so-called back print) may be formed, or a back surface primer layer, a backer layer, etc., which will be described later, may be formed. .
- the decorative sheet of the present invention may have a pattern pattern layer.
- the pattern pattern layer is a layer that imparts a desired pattern (design) to the decorative sheet, and the type of pattern is not limited. For example, a wood grain pattern, a leather pattern, a stone pattern, a grain pattern, a tiled pattern, a brickwork pattern, a cloth pattern, a geometric figure, a character, a symbol, an abstract pattern, and the like can be given.
- the method for forming the pattern layer is not particularly limited.
- an ink obtained by dissolving (or dispersing) a known colorant (dye or pigment) in a solvent (or dispersion medium) together with a binder resin is used. What is necessary is just to form on the base-material sheet
- an aqueous composition can be used from the viewpoint of reducing the VOC of the sheet.
- the colorant examples include inorganic pigments such as carbon black, titanium white, zinc white, dial, bitumen, and cadmium red; azo pigments, lake pigments, anthraquinone pigments, quinacridone pigments, phthalocyanine pigments, isoindolinone pigments, dioxazine pigments.
- Organic pigments such as aluminum powder, metal powder pigments such as bronze powder, pearlescent pigments such as titanium oxide-coated mica and bismuth oxide chloride; fluorescent pigments; These colorants can be used alone or in admixture of two or more. These colorants may be used together with fillers such as silica, extender pigments such as organic beads, neutralizing agents, surfactants and the like.
- binder resin in addition to polyester-based urethane resin treated with hydrophilicity, polyester, polyacrylate, polyvinyl acetate, polybutadiene, polyvinyl chloride, chlorinated polypropylene, polyethylene, polystyrene, polystyrene-acrylate copolymer, rosin derivative
- an alcohol adduct of styrene-maleic anhydride copolymer, cellulose resin and the like can be used in combination. More specifically, for example, polyacrylamide resins, poly (meth) acrylic resins, polyethylene oxide resins, poly N-vinyl pyrrolidone resins, water-soluble polyester resins, water-soluble polyamide resins, water-soluble amino acids.
- Resin water-soluble phenolic resin, other water-soluble synthetic resins; water-soluble natural polymers such as polynucleotides, polypeptides, polysaccharides and the like can also be used.
- natural rubber, synthetic rubber, polyvinyl acetate resin, (meth) acrylic resin, polyvinyl chloride resin, polyurethane-polyacrylic resin, etc. modified or a mixture of natural rubber, etc. Resin can also be used.
- the said binder resin can be used individually or in combination of 2 or more types.
- solvent examples include petroleum organic solvents such as hexane, heptane, octane, toluene, xylene, ethylbenzene, cyclohexane, and methylcyclohexane; ethyl acetate, butyl acetate, 2-methoxyethyl acetate, acetic acid-2 -Ester-based organic solvents such as ethoxyethyl; alcohol-based organic solvents such as methyl alcohol, ethyl alcohol, normal propyl alcohol, isopropyl alcohol, isobutyl alcohol, ethylene glycol, propylene glycol; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone Organic solvents; ether organic solvents such as diethyl ether, dioxane, tetrahydrofuran; dichloromethane, carbon
- Examples of the printing method used for forming the pattern layer include a gravure printing method, an offset printing method, a screen printing method, a flexographic printing method, an electrostatic printing method, and an inkjet printing method.
- a gravure printing method for example, roll coating method, knife coating method, air knife coating method, die coating method, lip coating method, comma coating method, kiss coating method, flow coating method, dip coating
- Various coating methods such as a coating method may be mentioned.
- the hand-drawn method, the ink-sink method, the photographic method, the transfer method, the laser beam drawing method, the electron beam drawing method, the metal partial evaporation method, the etching method, etc. may be used or combined with other forming methods. Good.
- the thickness of the pattern layer is not particularly limited and can be set as appropriate according to product characteristics.
- the layer thickness at the time of coating is about 1 ⁇ m to 15 ⁇ m, and the layer thickness after drying is about 0.1 ⁇ m to 10 ⁇ m.
- an adhesive layer may be formed on the design pattern layer.
- the adhesive layer is preferably a transparent adhesive layer, and the transparent adhesive layer includes any of colorless and transparent, colored and transparent, and translucent.
- the adhesive is not particularly limited, and an adhesive known in the field of decorative sheets can be used.
- known adhesives in the field of decorative sheets include thermoplastic resins such as polyamide resins, acrylic resins and vinyl acetate resins, and thermosetting resins such as urethane resins. These adhesives can be used individually by 1 type or in combination of 2 or more types. Further, a two-component curable polyurethane resin or polyester resin using isocyanate as a curing agent can also be applied.
- the thickness of the adhesive layer is not particularly limited, but the thickness after drying is about 0.1 ⁇ m to 30 ⁇ m, preferably about 1 ⁇ m to 20 ⁇ m.
- the decorative sheet of the present invention may have a transparent resin layer.
- the transparent resin layer is not particularly limited as long as it is transparent, and includes any of colorless and transparent, colored and transparent, and translucent.
- the resin constituting the transparent resin layer include polyethylene, ethylene- ⁇ olefin copolymer, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, propylene-butene copolymer, ethylene-vinyl acetate.
- Olefin resins such as copolymer, saponified ethylene-vinyl acetate copolymer, ethylene- (meth) acrylic acid copolymer, ethylene- (meth) acrylic acid ester copolymer, polyethylene terephthalate, polybutylene terephthalate, polyamide , Ionomers, acrylic ester polymers, methacrylic ester polymers, polycarbonate, cellulose triacetate, and the like. These resins can be used alone or in combination of two or more.
- the transparent resin layer preferably contains an olefin resin typified by a polypropylene resin, and the resin constituting the transparent resin layer is more preferably the olefin resin.
- the transparent resin layer may be colored as long as it has transparency, but it is particularly desirable not to add a colorant.
- the thickness of the transparent resin layer is usually about 20 ⁇ m to 200 ⁇ m, but may exceed the above range depending on the use of the sheet.
- a primer layer may be provided on the primer layer transparent resin layer.
- the primer layer can be formed by applying a known primer agent to the surface of the transparent resin layer.
- the primer agent include a urethane resin primer agent made of an acrylic-modified urethane resin (acrylic urethane resin), a urethane-cellulose resin (for example, a resin obtained by adding hexamethylene diisocyanate to a mixture of urethane and nitrified cotton) ), A resinous primer agent made of a block copolymer of acrylic and urethane, and the like. You may mix
- the additive examples include fillers such as calcium carbonate and clay, flame retardants such as magnesium hydroxide, antioxidants, lubricants, foaming agents, ultraviolet absorbers, and light stabilizers.
- the blending amount of the additive can be appropriately set according to the product characteristics.
- the application amount of the primer agent is not particularly limited, but is usually about 0.1 g / m 2 or more and 100 g / m 2 or less, preferably about 0.1 g / m 2 or more and 50 g / m 2 or less.
- the thickness of the primer layer is not particularly limited, but is usually about 0.01 ⁇ m to 10 ⁇ m, preferably about 0.1 ⁇ m to 1 ⁇ m.
- the decorative sheet of the present invention may have a gloss control layer.
- the gloss adjusting layer By having the gloss adjusting layer, the gloss when the decorative sheet of the present invention is viewed from the surface can be adjusted, and the design can be further improved.
- the gloss adjusting layer is preferably laminated under the surface protective layer, for example, preferably formed between the transparent resin layer and the surface protective layer.
- the gloss adjustment layer may be adjusted to a layer having colorless transparency, colored transparency, and translucency within a range that does not impair the design of the foundation.
- Examples of the resin constituting the gloss adjusting layer include polyvinyl butyral resin, urethane resin, acrylic resin, acrylic urethane copolymer resin, and two-component curable polyurethane resin using isocyanate as a curing agent.
- the gloss adjusting layer may be a known primer agent from the viewpoint of adhesion to the transparent resin layer or the surface protective layer.
- the gloss adjusting layer has a primer effect as well as a gloss adjusting effect.
- the primer agent for forming such a layer include a urethane resin primer agent made of an acrylic-modified urethane resin and the like, a resin primer agent made of a block copolymer of acrylic and urethane, and the like.
- the resin component for forming the gloss adjusting layer can be used alone or in combination of two or more.
- the gloss adjusting layer can contain a filler for adjusting the gloss.
- the filler include silica, talc, clay, barium sulfate, barium carbonate, calcium sulfate, calcium carbonate, magnesium carbonate and the like.
- the amount of the filler is preferably from 0.1 to 50 parts by weight, and more preferably from 10 to 40 parts by weight, based on 100 parts by weight of the resin component.
- the gloss adjusting layer may contain additives such as a color pigment, a flame retardant, an antioxidant, a lubricant, a foaming agent, an ultraviolet absorber, and a light stabilizer as necessary.
- the thickness of the gloss adjusting layer is not particularly limited, but is usually about 0.1 ⁇ m to 100 ⁇ m, preferably about 0.5 ⁇ m to 15 ⁇ m.
- the glossiness of the gloss adjusting layer is preferably different from the glossiness of the surface protective layer (60 ° gloss meter).
- the glossiness is a value measured using a glossiness meter according to JISZ-8741.
- the measuring instrument for example, Murakami Color Research Laboratory Co., Ltd. GMX-202 may be used.
- a method for adjusting the glossiness (60 ° gloss meter) of the gloss adjusting layer for example, a method of adding the filler to the resin component for forming the gloss adjusting layer, and appropriately changing the composition of the resin component Methods and the like.
- a back primer layer may be provided on the back surface of the back primer layer substrate sheet (the surface opposite to the surface on which the pattern layer is laminated). For example, it is effective when a decorative sheet is produced by laminating the decorative sheet and an adherend.
- the back primer layer can be formed by applying a known primer to the base material sheet.
- the primer agent include a urethane resin-based primer agent made of an acrylic-modified urethane resin (acrylic urethane resin), a urethane-cellulose resin (for example, a resin obtained by adding hexamethylene diisocyanate to a mixture of urethane and nitrified cotton) ), A resinous primer agent made of a block copolymer of acrylic and urethane, and the like. You may mix
- the additive examples include fillers such as calcium carbonate and clay, flame retardants such as magnesium hydroxide, antioxidants, lubricants, foaming agents, ultraviolet absorbers, and light stabilizers.
- the blending amount of the additive can be appropriately set according to the product characteristics.
- the application amount of the primer agent is not particularly limited, but is usually about 0.1 g / m 2 or more and 100 g / m 2 or less, preferably about 0.1 g / m 2 or more and 50 g / m 2 or less.
- the thickness of the back primer layer is not particularly limited, but is usually about 0.01 ⁇ m to 10 ⁇ m, preferably about 0.1 ⁇ m to 1 ⁇ m.
- Backer layer back side of the pattern layer if the back side of the base sheet has a pattern layer
- a synthetic resin layer may be provided on the back side of the backer layer base sheet.
- the said impact resistance says the dent flaw especially when a load is applied partially.
- the decorative sheet of the present invention has sufficient impact resistance without providing a backer layer, but various performances such as impact resistance can be further improved by providing a backer layer.
- extrusion molding of a molten resin is suitable, for example, extrusion molding using a T die is suitable.
- a method of adhering the back surface of the base material sheet and the backer layer a method of adhering the base material sheet and the backer layer obtained by extruding the molten resin by heat fusion, the base material sheet and the backer layer
- a method of bonding by providing an adhesive layer (further, if necessary, a primer layer) between them may be used.
- the resin constituting the backer layer is not limited, but a thermoplastic resin such as polyethylene, polypropylene (PP), polyvinyl alcohol, ethylene-vinyl alcohol copolymer, polymethylene, polymethylpentene, polyethylene terephthalate, amorphous polyethylene terephthalate.
- a thermoplastic resin such as polyethylene, polypropylene (PP), polyvinyl alcohol, ethylene-vinyl alcohol copolymer, polymethylene, polymethylpentene, polyethylene terephthalate, amorphous polyethylene terephthalate.
- A-PET highly heat-resistant polyalkylene terephthalate
- polyethylene terephthalate obtained by substituting a part of ethylene glycol with 1,4-cyclohexanedimethanol, diethylene glycol or the like, so-called trade name PET-G (Eastman Chemical (Company)
- PET-G Eastman Chemical (Company)
- PBT polybutylene terephthalate
- Polycarbonate polyarylate
- polyethylene naphthalate polyethylene naphthalate-isophthalate
- Polymers polyimides, polystyrenes, polyamides, ABS (acrylonitrile - butadiene - styrene copolymer) and the like. These resins can be used alone or in combination of two or more.
- the thickness of the backer layer can be appropriately set depending on the use of the final product, the method of use, etc., and is generally preferably 100 ⁇ m or more and 800 ⁇ m or less. Among these, 100 micrometers or more and 600 micrometers or less are more preferable.
- the backer layer can be subjected to known easy adhesion treatment such as corona discharge treatment, plasma treatment, degreasing treatment, surface roughening treatment, etc. on the adhesion surface.
- a primer layer may be further provided on the back surface in consideration of adhesiveness with the adherend.
- the outermost layer side of the decorative sheet may be embossed as necessary.
- the surface protective layer does not contain a matting agent, an uneven shape that satisfies the conditions described in the above (1) to (3) is formed on the surface of the decorative sheet with an embossed plate. Also good.
- the embossing method is not particularly limited.
- a method in which the front surface of the surface protective layer is softened by heating, pressurized with an embossing plate, shaped, and then cooled is preferable.
- the front surface of the transparent resin layer may be softened by heating and pressed with an embossed plate, and then the surface protective layer may be formed thereon.
- a known single-wafer or rotary embossing machine is used.
- the concavo-convex shape include a cloth surface texture, a painted wall pattern, a textured pattern, a check pattern, a wood pattern, a grain pattern, a slab surface irregularity (such as a granite cleaved surface), and a moth eye pattern.
- FIG. 2 is a cross-sectional view showing an example of the decorative board of the present invention.
- the decorative board of the present invention has an adherend 11 on the surface of the decorative sheet opposite to the surface protective layer 9.
- the adherend is not limited, and the same materials as those used for known decorative panels can be used. Examples of the adherend include wood materials, metals, ceramics, plastics, and glass.
- the decorative sheet can be suitably used for a wood material.
- wood materials include veneer, wood veneer, wood plywood, particle board, medium density fiberboard (MDF) made from various materials such as cedar, firewood, firewood, pine, lawan, teak, and melapie. , Chip boards, or composite substrates on which chip boards are laminated.
- MDF medium density fiberboard
- wood plywood, particle board, medium density fiber board (MDF) is preferably used as the wood material.
- the lamination method of laminating the decorative sheet and the adherend is not limited, and for example, a method of sticking the decorative sheet to the adherend with an adhesive can be employed. What is necessary is just to select an adhesive agent suitably from well-known adhesive agents according to the kind etc. of to-be-adhered material. Examples thereof include polyvinyl acetate, polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ionomer, butadiene / acrylonitrile rubber, neoprene rubber, natural rubber and the like. These adhesives are used alone or in combination of two or more.
- the decorative board manufactured in this way includes, for example, interior materials for buildings such as walls, ceilings, and floors; exterior materials such as balconies and verandas; surface decorative boards and furniture for furniture such as window frames, doors, and handrails; Alternatively, it can be used for a surface decorative plate of a cabinet such as a light electric or OA device. In particular, the decorative board can be suitably used as a floor decorative material.
- Example 1 A primer layer (back surface primer layer) was provided on the back surface of the base sheet made of a colored polypropylene film having a thickness of 60 ⁇ m. Next, a pattern layer was formed on the surface of the base sheet by printing, and an adhesive layer was further formed on the pattern layer. Next, a transparent polypropylene resin sheet having a thickness of 80 ⁇ m was laminated on the adhesive layer by an extrusion laminating method to form a transparent resin layer. Next, the surface of the transparent polypropylene resin sheet was subjected to corona discharge treatment, and then a two-component curable urethane resin was applied to form a primer layer.
- a primer layer back surface primer layer
- a resin composition for forming a surface protective layer comprising 100 parts by mass of urethane acrylate electron beam curable resin (EB resin) and 16 parts by mass of silica (mode diameter of 2 ⁇ m or more and 4 ⁇ m or less) as an inorganic filler on the surface of the primer layer.
- EB resin urethane acrylate electron beam curable resin
- silica mode diameter of 2 ⁇ m or more and 4 ⁇ m or less
- the surface protective layer side is heated with an infrared non-contact type heater to soften the base sheet and the transparent resin layer, and then immediately embossed by hot pressure to form a concavo-convex pattern and make up A sheet was produced.
- Example 2 A decorative sheet was produced in the same manner as in Example 1 except that the surface protective layer did not contain silica and the surface shape showed the measured values shown in Table 1.
- Example 3 A gloss adjusting layer having a thickness of 3 ⁇ m was formed under the surface protective layer by a gravure coating method using a colored ink.
- the colored ink is 7.5% by weight of ocher (iron oxide) as a coloring pigment and 7% by weight of silica (mode system 3 ⁇ m or more and 5 ⁇ m or less) with respect to 100% by weight of the vehicle containing 6.0% by weight of polyvinyl butyral resin. %. Thereby, it was made for the surface shape to show the measured value of Table 1. Other than that was carried out similarly to Example 1, and produced the decorative sheet.
- Example 4 A decorative sheet was prepared in the same manner as in Example 1 except that a thermosetting resin was used as the resin used for the resin composition for forming the surface protective layer, and the surface shape showed the measured values shown in Table 1.
- Example 5 A decorative sheet was produced in the same manner as in Example 1 except that alumina (mode diameter: 2 ⁇ m or more and 4 ⁇ m or less) was used as the inorganic filler, and the surface shape showed the measured values shown in Table 1.
- alumina mode diameter: 2 ⁇ m or more and 4 ⁇ m or less
- Example 6 A decorative sheet was prepared in the same manner as in Example 1 except that the surface protective layer did not contain an inorganic filler, the shape of the embossed plate to be shaped was changed, and the surface shape showed the measured values shown in Table 1. .
- Example 7 A decorative sheet was prepared in the same manner as in Example 1 except that the surface protective layer did not contain an inorganic filler, the shape of the embossed plate to be shaped was changed, and the surface shape showed the measured values shown in Table 1. .
- Comparative Example 1 In the same manner as in Example 1 except that the content of silica (mode diameter: 2 ⁇ m or more and 4 ⁇ m or less) in the resin composition for forming a surface protective layer was 34 parts by mass, and the surface shape showed the measured values shown in Table 2, A decorative sheet was prepared.
- Comparative Example 2 In the same manner as in Example 1 except that the content of the silica (mode diameter: 9 ⁇ m or more and 11 ⁇ m or less) of the resin composition for forming the surface protective layer was 8 parts by mass, and the surface shape showed the measured values shown in Table 2, A decorative sheet was prepared.
- Comparative Example 3 In the same manner as in Example 1 except that the content of silica (mode diameter: 9 ⁇ m or more and 11 ⁇ m or less) in the resin composition for forming a surface protective layer was 16 parts by mass, and the surface shape showed the measured values shown in Table 2, A decorative sheet was prepared.
- Comparative Example 4 The content of silica (mode diameter: 9 ⁇ m or more and 11 ⁇ m or less) of the resin composition for forming the surface protective layer was 8 parts by mass, the shape of the embossed plate to be shaped was changed, and the surface shape showed the measured values in Table 2.
- a decorative sheet was produced in the same manner as Example 1 except for the above.
- Comparative Example 5 The content of silica (mode diameter: 9 ⁇ m or more and 11 ⁇ m or less) of the resin composition for forming a surface protective layer was 16 parts by mass, the shape of the embossed plate to be shaped was changed, and the surface shape showed the measured values in Table 2.
- a decorative sheet was produced in the same manner as Example 1 except for the above.
- Comparative Example 6 A decorative sheet was prepared in the same manner as in Example 1 except that the shape of the embossed plate to be shaped was changed and the surface shape showed the measured values shown in Table 2.
- Comparative Example 7 A decorative sheet was prepared in the same manner as in Example 1 except that the shape of the embossed plate to be shaped was changed and the surface shape showed the measured values shown in Table 2.
- the surface shapes of the decorative sheets of Examples and Comparative Examples produced as described above were measured by the following measuring method.
- the measurement was performed using a surface roughness measuring instrument (trade name: SURFCOM FLEX-50A, manufactured by Tokyo Seimitsu Co., Ltd.) at a measurement speed of 0.6 mm / s.
- Ra (i) / Ra (ii) A range of 5 cm in length and 5 cm in width on the surface of the surface protective layer was arbitrarily selected. Within the above range, 5 points are arbitrarily selected, and from each of the 5 points, arithmetic mean roughness Ra is first measured in one direction in accordance with JIS B0603: 2001 according to JIS B0601: 2001. Measurement was made and the average value of 5 points was defined as Ra (i). Next, arbitrarily select 5 points within the above range, and similarly measure the arithmetic average roughness Ra along the direction perpendicular to the direction in which Ra (i) is measured. (Ii). Ra (i) / Ra (ii) was calculated from the measured values of Ra (i) and Ra (ii).
- Ra and RSm at cut-off value ( ⁇ c) 0.08 mm A range of 5 cm in length and 5 cm in width on the surface of the surface protective layer was arbitrarily selected. Within the above range, 5 points are arbitrarily selected, and the evaluation length is set to 0.4 mm in an arbitrary fixed direction according to JIS B0601: 2001, and the cut-off value of the surface roughness measuring instrument ( ⁇ c ) was set to 0.08 mm, and the arithmetic average roughness Ra (i) and the average length RSm (i) of the roughness curve elements were measured.
- the surface roughness measuring instrument is selected by arbitrarily selecting five points and setting the evaluation length to 0.4 mm along the direction perpendicular to the direction in which Ra (i) and RSm (i) are measured.
- the average value of 10 points of Ra (i) and 5 points of Ra (ii) measured was calculated, and the arithmetic average was measured under the conditions of a cutoff value ( ⁇ c) of 0.08 mm and an evaluation length of 0.4 mm.
- the roughness was Ra.
- an average value of a total of 10 points of 5 RSm (i) and RSm (ii) was calculated and measured under the conditions of a cutoff value ( ⁇ c) of 0.08 mm and an evaluation length of 0.4 mm.
- the average length RSm of the roughness curve element was used.
- the surface of the decorative sheet was placed on a horizontal base so that the surface protective layer of the glossy decorative sheet faced upward, and the surface of the decorative sheet was irradiated with a fluorescent lamp from an angle of 45 degrees. The surface of the decorative sheet was visually observed from the position in the specular reflection direction of the fluorescent lamp, and the gloss state was evaluated.
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Abstract
Description
1.最表面に表面保護層を有する化粧シートであって、
(1)JIS B0633:2001に準拠した測定条件で、JIS B0601:2001に準拠した測定方法により、前記表面保護層の表面の任意の方向に沿って測定した算術平均粗さRa(i)と、当該任意の方向に対して垂直な方向に沿って測定した算術平均粗さRa(ii)とで算出される、Ra(i)/Ra(ii)の値が0.62以上1.63以下であり、
(2)JIS B0633:2001に準拠した測定条件で、JIS B0601:2001に準拠した測定方法により、前記表面保護層の表面の任意の方向に沿って測定した粗さ曲線要素の平均長さRSm(i)と、当該任意の方向に対して垂直な方向に沿って測定した粗さ曲線要素の平均長さRSm(ii)とで算出される、RSm(i)/RSm(ii)の値が0.75以上1.33以下であり、
(3)前記表面保護層の表面の、JIS B0601:2001に準拠した測定方法により、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した算術平均粗さRaが0.40μm以下であり、且つ、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した粗さ曲線要素の平均長さRSmが22.90μm以上である、ことを特徴とする化粧シート。
2.前記表面保護層を構成する樹脂が電離放射線硬化型樹脂である、項1に記載の化粧シート。
3.前記表面保護層が、無機フィラーを含有する、項1又は2に記載の化粧シート。
4.前記無機フィラーが、シリカ、アルミナ及びガラス粉体からなる群から選択される少なくとも1種である、項3に記載の化粧シート。
5.更に、艶調整層を有する、項1~4のいずれかに記載の化粧シート。
6.項1~5のいずれかに記載の化粧シートの前記表面保護層とは反対側の面に、被着材を有する化粧板。
本発明の化粧シートは、最表面に表面保護層を有する化粧シートであって、
(1)JIS B0633:2001に準拠した測定条件で、JIS B0601:2001に準拠した測定方法により、上記表面保護層の表面の任意の方向に沿って測定した算術平均粗さRa(i)と、当該任意の方向に対して垂直な方向に沿って測定した算術平均粗さRa(ii)とで算出される、Ra(i)/Ra(ii)の値が0.62以上1.63以下であり、
(2)JIS B0633:2001に準拠した測定条件で、JIS B0601:2001に準拠した測定方法により、上記表面保護層の表面の任意の方向に沿って測定した粗さ曲線要素の平均長さRSm(i)と、当該任意の方向に対して垂直な方向に沿って測定した粗さ曲線要素の平均長さRSm(ii)とで算出される、RSm(i)/RSm(ii)の値が0.75以上1.33以下であり、
(3)前記表面保護層の表面の、JIS B0601:2001に準拠した測定方法によりカットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した算術平均粗さRaが0.40μm以下であり、且つ、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した粗さ曲線要素の平均長さRSmが22.90μm以上である、ことを特徴とする。
上記特徴を有する化粧シートは、住環境の中で用いるに際し、日常的に用いる汚染物質をこぼした場合のような、粉状の微粒子が付着することによる汚れが取れ易く、易掃性に優れており、且つ、耐衝撃性に優れている。そのため、本発明の化粧シートを、特に床用の化粧シートとして好適に使用することができる。
本発明の化粧シートは、表面保護層を有する。表面保護層は、化粧シートの最表面の層として設けられる。
次いで、上記範囲内で任意に5点を選択して、上記Ra(i)を測定した方向とは垂直な方向に沿って同様に算術平均粗さRaを測定し、5点の平均値をRa(ii)とする。 最後に、上記Ra(i)及びRa(ii)の値から、Ra(i)/Ra(ii)を算出する。
次いで、任意に5点を選択して、上記RSm(i)を測定した方向とは垂直な方向に沿って同様に算術平均粗さRSmを測定し、5点の平均値をRSm(ii)とする。
最後に、測定されたRSm(i)及びRSm(ii)の値から、RSm(i)/RSm(ii)を算出する。
次いで、任意に5点を選択して、上記Ra(i)及びRSm(i)を測定した方向とは垂直な方向に沿って同様に、評価長さを0.4mmとして、表面粗さ測定器のカットオフ値(λc)を0.08mmに設定し、算術平均粗さRa(ii)及び粗さ曲線要素の平均長さRSm(ii)を測定する。 最後に、測定されたRa(i)5点及びRa(ii)5点の合計10点の平均値を算出し、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した算術平均粗さRaとする。また、測定されたRSm(i)5点及びRSm(ii)5点の合計10点の平均値を算出し、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した粗さ曲線要素の平均長さRSmとする。
基材シートは、その表面(おもて面)に絵柄模様層等が順次積層される層である。基材シートとしては、例えば、熱可塑性樹脂により形成されたシート(フィルム)が好適である。具体的には、ポリエチレン,エチレン-αオレフィン共重合体,ポリプロピレン,ポリメチルペンテン,ポリブテン、エチレン-プロピレン共重合体,プロピレン-ブテン共重合体,エチレン-酢酸ビニル共重合体,エチレン-酢酸ビニル共重合体ケン化物,エチレン-(メタ)アクリル酸共重合体,エチレン-(メタ)アクリル酸エステル共重合体等のオレフィン系樹脂、ポリ塩化ビニル、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリアミド、ポリカーボネート、ポリエチレンナフタレート、アイオノマー、アクリル酸エステル系重合体、メタアクリル酸エステル系重合体等が挙げられる。前記基材シートは、これら樹脂を単独で又は2種以上を組み合わせ用いることにより形成される。なお、「(メタ)アクリル酸」は、アクリル酸及び/又はメタクリル酸を意味し、他の(メタ)と記載された部分についても同様である。
本発明の化粧シートは、絵柄模様層を有していてもよい。
透明性樹脂層と絵柄模様層との密着性を高めるため、絵柄模様層上に接着剤層を形成してもよい。接着剤層は、透明性接着剤層であることが好ましく、当該透明性接着剤層としては、無色透明、着色透明、半透明等のいずれも含む。
本発明の化粧シートは、透明性樹脂層を有していてもよい。
透明性樹脂層の上には、プライマー層を設けてもよい。プライマー層は、公知のプライマー剤を透明性樹脂層の表面に塗布することにより形成できる。プライマー剤としては、例えば、アクリル変性ウレタン樹脂(アクリルウレタン系樹脂)等からなるウレタン樹脂系プライマー剤、ウレタン-セルロース系樹脂(例えば、ウレタンと硝化綿の混合物にヘキサメチレンジイソシアネートを添加してなる樹脂)からなるプライマー剤、アクリルとウレタンのブロック共重合体からなる樹脂系プライマー剤等が挙げられる。プライマー剤には、必要に応じて、添加剤を配合してもよい。添加剤としては、例えば、炭酸カルシウム、クレー等の充填剤、水酸化マグネシウム等の難燃剤、酸化防止剤、滑剤、発泡剤、紫外線吸収剤、光安定剤などが挙げられる。添加剤の配合量は、製品特性に応じて適宜設定できる。
本発明の化粧シートは、艶調整層を有していてもよい。艶調整層を有することにより、本発明の化粧シートを表面から視認した際の艶を調整することができ、意匠性をより向上させることができる。
基材シートの裏面(絵柄模様層が積層される面と反対側の面)には、必要に応じて、裏面プライマー層を設けてもよい。例えば、当該化粧シートと被着材とを積層して化粧板を作製する際に効果的である。
基材シートの裏面(基材シートの裏面に絵柄模様層がある場合には絵柄模様層の裏面)には、バッカー層(耐衝撃性を高めたり、被着材の影響を緩和したりするための合成樹脂層)を設けてもよい。なお、上記耐衝撃性は特に部分的に荷重がかかった場合の凹み傷を言う。本発明の化粧シートは、バッカー層を設けなくても十分な耐衝撃性は有しているが、バッカー層を設けることにより耐衝撃性などの諸性能をより高めることができる。
本発明の化粧シートは、上記(1)~(3)に記載される条件を満たしていれば、化粧シートの最表層側には、必要に応じてエンボス加工を施してもよい。また、表面保護層が艶消し剤を含有しない構成である場合には、化粧シートの表面にエンボス版により、上記(1)~(3)に記載される条件を満たす凹凸形状を賦形してもよい。
上記化粧シートを被着材上に積層することにより、化粧板とすることができる。図2は、本発明の化粧板の一例を示す断面図である。図2において、本発明の化粧板は、上記化粧シートの表面保護層9とは反対側の面に、被着材11を有している。被着材は、限定的でなく、公知の化粧板に用いられるものと同様のものを用いることができる。上記被着材としては、例えば、木質材、金属、セラミックス、プラスチックス、ガラス等が挙げられる。特に、上記化粧シートは、木質材に好適に使用することができる。木質材としては、具体的には、杉、檜、欅、松、ラワン、チーク、メラピー等の各種素材から作られた突板、木材単板、木材合板、パーティクルボード、中密度繊維板(MDF)、チップボード、又はチップボードが積層された複合基材等が挙げられる。上記木質材としては、木材合板、パーティクルボード、中密度繊維板(MDF)を用いることが好ましい。
実施例1
60μm厚さの着色ポリプロピレンフィルムからなる基材シートの裏面にプライマー層(裏面プライマー層)を設けた。次に、基材シートの表面に絵柄模様層を印刷により形成し、さらに当該絵柄模様層上に接着剤層を形成した。次に、当該接着剤層の上に80μm厚さの透明ポリプロピレン系樹脂のシートを押出しラミネート方式で積層し、透明性樹脂層を形成した。次に、透明ポリプロピレン系樹脂シートの表面にコロナ放電処理を施した後、2液硬化型ウレタン樹脂を塗工することによりプライマー層を形成した。
表面保護層がシリカを含有しない構成とし、表面形状が表1の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
表面保護層の下層に、着色インキを用いてグラビアコート法により、厚みが3μmの艶調整層を形成した。着色インキは、ポリビニルブチラール系樹脂6.0質量%を含有するビヒクル100質量%に対して、着色顔料として黄土(酸化鉄)7.5質量%、及びシリカ(モード系3μm以上5μm以下)7質量%を含有する組成とした。これにより、表面形状が表1の測定値を示すようにした。
それ以外は実施例1と同様にして、化粧シートを作製した。
表面保護層形成用樹脂組成物に用いる樹脂として、熱硬化型樹脂を用い、表面形状が表1の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
無機フィラーとしてアルミナ(モード径2μm以上4μm以下)を用い、表面形状が表1の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
表面保護層が無機フィラーを含有しない構成とし、賦形するエンボス版の形状を変え、表面形状が表1の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
表面保護層が無機フィラーを含有しない構成とし、賦形するエンボス版の形状を変え、表面形状が表1の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
表面保護層形成用樹脂組成物のシリカ(モード径2μm以上4μm以下)の含有量を34質量部とし、表面形状が表2の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
表面保護層形成用樹脂組成物のシリカ(モード径9μm以上11μm以下)の含有量を8質量部とし、表面形状が表2の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
表面保護層形成用樹脂組成物のシリカ(モード径9μm以上11μm以下)の含有量を16質量部とし、表面形状が表2の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
表面保護層形成用樹脂組成物のシリカ(モード径9μm以上11μm以下)の含有量を8質量部とし、賦形するエンボス版の形状を変え、表面形状が表2の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
表面保護層形成用樹脂組成物のシリカ(モード径9μm以上11μm以下)の含有量を16質量部とし、賦形するエンボス版の形状を変え、表面形状が表2の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
賦形するエンボス版の形状を変え、表面形状が表2の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
賦形するエンボス版の形状を変え、表面形状が表2の測定値を示すようにした以外は実施例1と同様にして、化粧シートを作製した。
各実施例及び比較例において、厚みが2.5mmの中密度木質繊維板(MDF)上に水性エマルジョン接着剤(中央理化工業(株)製リカボンドBA-10L (主剤):BA-11B (硬化剤)=100:2.5(質量比))を80g/m2で均一に塗工し、化粧シートを貼り合わせて、室温で3日間養生することにより各化粧板を作製した。
表面保護層の表面の、縦5cm、横5cmの範囲を任意に選択した。上記範囲内で、任意に5点を選択して、5点それぞれから、先ず一方向にJIS B0633:2001に準拠した測定条件で、JIS B0601:2001に準拠した測定方法により算術平均粗さRaを測定し、5点の平均値をRa(i)とした。
次いで、上記範囲内で任意に5点を選択して、上記Ra(i)を測定した方向とは垂直な方向に沿って同様に算術平均粗さRaを測定し、5点の平均値をRa(ii)とした。 測定されたRa(i)及びRa(ii)の値から、Ra(i)/Ra(ii)を算出した。
表面保護層の表面の、縦5cm、横5cmの範囲を任意に選択した。上記範囲内で、任意に5点を選択して、任意の一定方向にJIS B0633:2001に準拠した測定条件で、JIS B0601:2001に準拠した測定方法により粗さ曲線要素の平均長さRSmを測定し、5点の平均値をRSm(i)とした。
次いで、任意に5点を選択して、上記RSm(i)を測定した方向とは垂直な方向に沿って同様に算術平均粗さRSmを測定し、5点の平均値をRSm(ii)とした。
測定されたRSm(i)及びRSm(ii)の値から、RSm(i)/RSm(ii)を算出した。
表面保護層の表面の、縦5cm、横5cmの範囲を任意に選択した。上記範囲内で、任意に5点を選択して、任意の一定方向にJIS B0601:2001に準拠した測定方法により、評価長さを0.4mmとして、表面粗さ測定器のカットオフ値(λc)を0.08mmに設定し、算術平均粗さRa(i)及び粗さ曲線要素の平均長さRSm(i)を測定した。
次いで、任意に5点を選択して、上記Ra(i)及びRSm(i)を測定した方向とは垂直な方向に沿って同様に、評価長さを0.4mmとして、表面粗さ測定器のカットオフ値(λc)を0.08mmに設定し、算術平均粗さRa(ii)及び粗さ曲線要素の平均長さRSm(ii)を測定した。 測定されたRa(i)5点及びRa(ii)5点の合計10点の平均値を算出し、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した算術平均粗さRaとした。また、測定されたRSm(i)5点及びRSm(ii)5点の合計10点の平均値を算出し、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した粗さ曲線要素の平均長さRSmとした。
化粧シートの表面全面に対して、小麦粉を散布した。次いで、ゴム製の接触片に300g/cm2の荷重をかけ、一方向に3回転させて評価用汚れ部を作製した。次いで、小麦粉による汚れ残りがなくなるように水で湿らせた雑巾(タオル生地)で一方向に1回拭き、拭いた後の化粧シート表面を以下の評価基準に従って評価した。なお、評価がAであれば実使用において問題ないと評価される。
A:汚れ残りなし
B:全体に薄く汚れ残りあり
C:全体に汚れ残りあり
化粧シートの表面保護層が上を向くように水平な台に置き、45度の角度から蛍光灯で化粧シートの表面を照射した。蛍光灯の正反射方向となる位置から化粧シートの表面を目視で観察し、艶の状態を評価した。
化粧板の化粧シートが積層されている側の表面に、荷重500g、半径6.5mmの撃ち型を30cmの高さから落下させ、化粧シート表面の傷の目立ち易さを目視により観察し、下記評価基準に従って評価した。なお、評価がA以上であれば実使用において問題ないと評価される。
A+:傷が非常に目立ち難い
A:傷が目立ち難い
B:傷が目立ち易い
C:傷が非常に目立ち易い
各化粧板を用いて、米国BYK GARDNER社製のホフマンスクラッチ試験機を用いて試験を行った。具体的には、化粧板に積層された化粧シートの表面に対して45°の角度で接するようにスクラッチ刃(φ7mmの円柱刃)をセットし、試験機を化粧シート上で移動させた。徐々に荷重(錘)を高めていき、各化粧板表面に擦り傷、圧痕等が生じるまで試験を繰り返し行った。下記評価基準に従って評価した。なお、評価がB以上であれば実使用において問題ないと評価される。
A:400g荷重以上において、傷が見られない
B:300g荷重以上400g荷重未満において、傷が見られない
C:300g荷重未満において、傷が発生した。
2.裏面プライマー層
3.基材シート
4.絵柄模様層
5.接着剤層
6.透明性樹脂層
7.プライマー層
8.艶調整層
9. 表面保護層
10.微細な表面凹凸形状
11.被着材
Claims (6)
- 最表面に表面保護層を有する化粧シートであって、
(1)JIS B0633:2001に準拠した測定条件で、JIS B0601:2001に準拠した測定方法により、前記表面保護層の表面の任意の方向に沿って測定した算術平均粗さRa(i)と、当該任意の方向に対して垂直な方向に沿って測定した算術平均粗さRa(ii)とで算出される、Ra(i)/Ra(ii)の値が0.62以上1.63以下であり、
(2)JIS B0633:2001に準拠した測定条件で、JIS B0601:2001に準拠した測定方法により、前記表面保護層の表面の任意の方向に沿って測定した粗さ曲線要素の平均長さRSm(i)と、当該任意の方向に対して垂直な方向に沿って測定した粗さ曲線要素の平均長さRSm(ii)とで算出される、RSm(i)/RSm(ii)の値が0.75以上1.33以下であり、
(3)前記表面保護層の表面の、JIS B0601:2001に準拠した測定方法により、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した算術平均粗さRaが0.40μm以下であり、且つ、カットオフ値(λc)0.08mm、評価長さ0.4mmの条件で測定した粗さ曲線要素の平均長さRSmが22.90μm以上である、ことを特徴とする化粧シート。 - 前記表面保護層を構成する樹脂が電離放射線硬化型樹脂である、請求項1に記載の化粧シート。
- 前記表面保護層が、無機フィラーを含有する、請求項1又は2に記載の化粧シート。
- 前記無機フィラーが、シリカ、アルミナ及びガラス粉体からなる群から選択される少なくとも1種である、請求項3に記載の化粧シート。
- 更に、艶調整層を有する、請求項1~4のいずれかに記載の化粧シート。
- 請求項1~5のいずれかに記載の化粧シートの前記表面保護層とは反対側の面に、被着材を有する化粧板。
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WO2021066107A1 (ja) * | 2019-10-04 | 2021-04-08 | 株式会社クレハ | 抗菌性成形体およびその製造方法 |
WO2021246470A1 (ja) * | 2020-06-03 | 2021-12-09 | 凸版印刷株式会社 | 化粧シート |
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- 2016-09-30 JP JP2017543613A patent/JP6753409B2/ja active Active
- 2016-09-30 CN CN201680056212.9A patent/CN108136723B/zh active Active
- 2016-09-30 KR KR1020187008041A patent/KR102038573B1/ko active IP Right Grant
- 2016-09-30 PT PT168518421T patent/PT3357685T/pt unknown
- 2016-09-30 EP EP16851842.1A patent/EP3357685B1/en active Active
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CN110770021B (zh) * | 2017-06-28 | 2021-08-13 | 大日本印刷株式会社 | 装饰成型品、装饰成型品的制造方法、转印片和显示装置 |
WO2021066107A1 (ja) * | 2019-10-04 | 2021-04-08 | 株式会社クレハ | 抗菌性成形体およびその製造方法 |
WO2021246470A1 (ja) * | 2020-06-03 | 2021-12-09 | 凸版印刷株式会社 | 化粧シート |
JP7528543B2 (ja) | 2020-06-03 | 2024-08-06 | Toppanホールディングス株式会社 | 化粧シート |
Also Published As
Publication number | Publication date |
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EP3357685B1 (en) | 2023-03-01 |
JPWO2017057673A1 (ja) | 2018-07-26 |
US20180257328A1 (en) | 2018-09-13 |
CN108136723B (zh) | 2021-06-11 |
KR20180063079A (ko) | 2018-06-11 |
KR102038573B1 (ko) | 2019-10-30 |
US11318703B2 (en) | 2022-05-03 |
EP3357685A1 (en) | 2018-08-08 |
PT3357685T (pt) | 2023-04-05 |
CN108136723A (zh) | 2018-06-08 |
JP6753409B2 (ja) | 2020-09-09 |
EP3357685A4 (en) | 2019-06-05 |
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