JP2022154681A - Decorative sheet, decorative laminate, and manufacturing method of decorative sheet - Google Patents

Abstract

To provide a decorative sheet excellent in designability, without changing a degree of glossiness by an observation angle, while imparting a matt feeling on a surface of the decorative sheet, and a decorative laminate and a manufacturing method of a decorative sheet.SOLUTION: A decorative sheet 8 includes a thermoplastic resin layer 4, a picture pattern layer 3, and a surface protective layer 1 in this order. An embossed part 5 is formed on a surface of the surface protective layer 1. At the surface on which the embossed part 5 is formed of the surface protective layer 1, arithmetic average roughness Ra stipulated by JIS B 0601 is within a range of 2.0 to 10.0 μm, and ten-point average roughness Rz stipulated by JIS B 0601 is within a range of 20.0 to 40.0 μm.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a decorative sheet, a decorative board, and a method for manufacturing a decorative sheet.

As a technique related to the decorative sheet, for example, there is a technique described in Patent Document 1.
In some decorative sheets, from the viewpoint of design, a glossiness adjusting agent (matting additive) is added to the surface protective layer constituting the decorative sheet to adjust the matte feeling of the surface of the decorative sheet.
A decorative sheet with a gloss-adjusting agent added to the surface protective layer may change the degree of gloss on the surface depending on the angle at which it is viewed. The entire protective layer) may appear white. Therefore, depending on the angle at which the decorative sheet is viewed, it may look like a different design.
In addition, when the type of the surface protective layer (for example, the type of resin component constituting the surface protective layer) changes, it is necessary to adjust the amount of the luster modifier added according to the type of the surface protective layer in order to match the degree of gloss. It may occur.

Japanese Patent Application Laid-Open No. 2001-129959

The present invention has been made in view of such problems, and the object thereof is to provide a decorative sheet with a matt feeling, and to improve the design so that the degree of luster does not change depending on the viewing angle. To obtain an excellent decorative sheet, a decorative board, and a method for manufacturing the decorative sheet.

A decorative sheet according to an aspect of the present invention comprises a thermoplastic resin layer, a pattern layer, and a surface protective layer in this order, and the surface protective layer has an uneven shape formed thereon. The arithmetic mean roughness Ra defined by JIS B 0601 on the surface on which the uneven shape of the layer is formed is in the range of 2.0 μm or more and 10.0 μm or less, and 10 points defined by JIS B 0601 The average roughness Rz is within the range of 20.0 μm to 40.0 μm.

Further, a decorative sheet according to an aspect of the present invention is obtained by laminating the above-described decorative sheet and a substrate with an adhesive layer interposed therebetween.

Further, in the method for producing a decorative sheet according to one aspect of the present invention, a laminate comprising a thermoplastic resin layer, a picture pattern layer, and a transparent thermoplastic resin layer in this order is provided on the surface of the transparent thermoplastic resin layer. and forming a surface protective layer on the surface of the transparent thermoplastic resin layer on which the uneven shape is formed. The arithmetic mean roughness Ra defined by JIS B 0601 on the surface of the plastic resin layer on which the uneven shape is formed is within the range of 2.0 μm or more and 10.0 μm or less, and defined by JIS B 0601 The uneven shape is formed so that the measured ten-point average roughness Rz is within the range of 20.0 μm to 40.0 μm.

According to one aspect of the present invention, there is provided a decorative sheet, a decorative board, and a method for producing a decorative sheet that are excellent in design, imparting a matte feeling to the surface of the decorative sheet and maintaining the degree of luster depending on the viewing angle. can provide.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows one structural example of the decorative sheet and decorative board which concern on embodiment of this invention. It is a sectional view showing an example of 1 composition of a surface protective layer concerning an embodiment of the present invention. FIG. 4 is a plan view showing the shape of a pattern formed on the surface of a transparent thermoplastic resin layer in an example of the present invention;

(Structure of Decorative Sheet and Decorative Board)
The decorative sheet and board according to the embodiments of the present invention will be described in detail below with reference to the drawings, but they do not necessarily have to be laminated in this order as long as they are within the scope of the present invention. Also, layers not shown in this drawing may be added.
FIG. 1 shows a cross-sectional structure of an example of a decorative sheet and a decorative plate according to this embodiment.
The decorative sheet 8 according to this embodiment is obtained by laminating a thermoplastic resin layer 4, a pattern layer 3, a transparent thermoplastic resin layer 2, and a surface protective layer 1 in this order. Embossed portions 5 are formed on the surfaces of the transparent thermoplastic resin layer 2 and the surface protective layer 1 . Moreover, all surfaces forming the embossed portions 5 formed in the transparent thermoplastic resin layer 2 may be covered with the resin forming the surface protective layer 1 .
The decorative board 9 according to this embodiment is obtained by laminating a base material (base material for decorative board) 7, an adhesive layer 6, and a decorative sheet 8 in this order.
The configuration of each layer described above will be described in detail below.

[Surface protective layer]
The surface protective layer 1 according to the present embodiment is a layer provided for imparting functions such as weather resistance, scratch resistance, stain resistance, and designability to the decorative sheet 8, and does not contain a gloss modifier. layer.
The surface protective layer 1 has an uneven surface (embossed portions 5). FIG. 2 is a diagram schematically showing the shape of the embossed portions 5 formed on the surface of the surface protective layer 1. As shown in FIG. As shown in FIG. 2, the surface protective layer 1 includes a core portion 1A that is a lower layer (rear surface side) region in the layer, and a protruding portion 1B (convex protrusion) that is an upper layer (surface side) region in the layer. An example of) and has an uneven shape on the surface. That is, the surface protective layer 1 has a core portion 1A and a protruding portion 1B protruding from one surface of the core portion 1A in a ridge shape. As a result, the surface of the surface protective layer 1 has an uneven shape. The protrusions 1B may be arranged regularly at equal intervals, or may be arranged irregularly. Moreover, the projecting portions 1B may be formed independently, or may be formed so that the projecting portions 1B share a part thereof.

The uneven shape formed on the surface of the surface protective layer 1 will be described in detail below.
The arithmetic mean roughness Ra of the surface of the surface protective layer 1 defined by JIS B 0601 is within the range of 2.0 μm or more and 10.0 μm or less. The arithmetic mean roughness Ra is preferably in the range of 1.0 μm or more and 8.0 μm or less, and more preferably in the range of 3.9 μm or more and 6.6 μm or less.
Moreover, the surface of the surface protective layer 1 has a ten-point average roughness Rz defined by JIS B 0601 within the range of 20.0 μm to 40.0 μm. The ten-point average roughness Rz is preferably in the range of 25.0 μm or more and 38.0 μm or less, and more preferably in the range of 26.7 μm or more and 37.4 μm or less.

That is, the surface of the surface protective layer 1 has an arithmetic mean roughness Ra defined by JIS B 0601 within the range of 2.0 μm or more and 10.0 μm or less, and a ten-point average roughness defined by JIS B 0601 Rz is in the range of 20.0 μm to 40.0 μm. If the arithmetic average roughness Ra and the ten-point average roughness Rz are within the above numerical ranges, the surface of the decorative sheet 8 can be While imparting a matte feel, it is possible to maintain the degree of gloss regardless of the viewing angle.

In addition, since the surface protective layer 1 according to the present embodiment does not contain a gloss adjusting agent (matting additive), the degree of gloss varies depending on the viewing angle, and when viewed with oblique light, the gloss adjusting agent The phenomenon that light is reflected diffusely due to the unevenness of the surface protective layer 1 and the whole surface protective layer 1 looks white does not occur. Therefore, with the surface protective layer 1 according to the present embodiment, the decorative sheet 8 (surface protective layer 1) does not appear to have different designs depending on the viewing angle.
In addition, with the surface protective layer 1 according to the present embodiment, even if the type of the surface protective layer (for example, the type of the resin component constituting the surface protective layer) changes, gloss adjustment is performed to match the degree of gloss. There is no need to adjust the amount of the agent to be added according to the type of surface protective layer.

Further, the 60-degree specular gloss measured from the outer layer side of the decorative sheet 8 in accordance with JIS Z8741:1997 is preferably 5.0 or less. If the 60-degree specular glossiness is 5.0 or less, the surface of the decorative sheet 8 can be given a sufficient matte feeling.
Also, the 85-degree specular gloss measured from the outer layer side of the decorative sheet 8 in accordance with JIS Z8741: 1997 and the 20-degree specular gloss measured from the outer layer side of the decorative sheet 8 in accordance with JIS Z8741: 1997. The difference is preferably in the range of 0.0 to 6.0, more preferably in the range of 0.0 to 3.8. More preferably, the 20-degree specular glossiness is 0.2 or less and the 85-degree specular glossiness is 4.0 or less. If the difference between the 85-degree specular glossiness and the 20-degree specular glossiness is within the above numerical range or within the above numerical value, the degree of gloss can be reliably maintained regardless of the viewing angle.

The thickness of the surface protective layer 1 is preferably in the range of 6 μm or more and 20 μm or less. When the thickness of the surface protective layer 1 is 6 μm or more, it can sufficiently have functions such as abrasion resistance required as a surface protective layer. Moreover, when the thickness of the surface protective layer 1 is 20 μm or less, there is an effect that the surface protective layer 1 does not become unnecessarily thick and the manufacturing cost does not increase excessively.
The surface protective layer 1 is made of a resin material. The resin material may be an ionizing radiation-curable resin, a thermosetting resin, a thermoplastic resin, or the like.
For example, an ultraviolet curable resin can be used as the ionizing radiation curable resin. As the ultraviolet curable resin, for example, (meth)acrylic resin, silicone resin, polyester resin, urethane resin, amide resin, and epoxy resin can be used. The ultraviolet curable resin may be either a water-based resin or a non-aqueous (organic solvent-based) resin.

As long as the surface protective layer 1 completely covers the transparent thermoplastic resin layer 2 , the function as a surface protective layer can be exhibited over the entire surface of the decorative sheet 8 . Further, the density of the surface protective layer 1 can be adjusted according to the desired luster and performance.
As the material constituting the surface protective layer 1, in addition to the resin materials described above, for example, resin materials such as urethane, acrylic, acrylic silicone, fluorine, and epoxy resin materials can be appropriately selected and used.
The surface protective layer 1 optionally contains various additives such as ultraviolet absorbers, heat stabilizers, light stabilizers, antiblocking agents, catalyst scavengers, colorants, light scattering agents, and antistatic agents. You may
As a method for providing the surface protective layer 1 in this embodiment, various known coating methods such as gravure coating, reverse coating, gravure reverse coating, die coating, and flow coating can be used.

[Transparent thermoplastic resin layer]
The transparent thermoplastic resin layer 2 may be provided as necessary to protect the pattern layer 3, and may be transparent or translucent as long as the pattern can be utilized. Alternatively, the embossed portion 5 may be provided by appropriately providing a matte pattern or embossing.
Examples of the resin constituting the transparent thermoplastic resin layer 2 include synthetic resins such as polyolefin, polystyrene, polycarbonate, polyester, polyamide, ethylene-vinyl acetate copolymer, polyvinyl alcohol, and acrylic, or foams of these synthetic resins, Rubbers such as ethylene-propylene copolymer rubber, ethylene-propylene-diene copolymer rubber, styrene-butadiene copolymer rubber, styrene-isoprene-styrene block copolymer rubber, styrene-butadiene-styrene block copolymer rubber, polyurethane, etc. Among them, polyolefin-based resins are particularly preferably used. Specifically, it is preferable to use a homopolymer of ethylene, propylene, or butene, a copolymer resin of two or more of these, or a mixed resin thereof. Various additives such as ultraviolet absorbers, radical scavengers, antioxidants, and processing stabilizers may be added to these resins, if necessary.

The film thickness of the transparent thermoplastic resin layer 2 is preferably in the range of 15 μm or more and 150 μm or less. As a method for laminating the thermoplastic resin layer 4 and the transparent thermoplastic resin layer 2 with the pattern pattern layer 3 interposed therebetween, there is a dry lamination method in which an adhesive resin layer (not shown) is interposed between them. can be used, for example, an extrusion lamination method in which a transparent resin to be the transparent thermoplastic resin layer 2 is melt-extruded from a T-die and laminated on the thermoplastic resin layer 4 provided with a film while forming a film.
In addition, although the above-mentioned embodiment demonstrated the case where the transparent thermoplastic resin layer 2 was provided, in this embodiment, the transparent thermoplastic resin layer 2 may not be provided. That is, the surface protective layer 1 may be formed on the thermoplastic resin layer 4 provided with the pattern layer 3 .

[Thermoplastic resin layer]
The thermoplastic resin layer 4 is preferably one on which the pattern layer 3 can be provided by gravure printing or the like. Examples of the thermoplastic resin layer 4 include thin paper, titanium paper, paper such as resin-impregnated paper, polyethylene, polypropylene, polybutylene, polystyrene, polycarbonate, polyester, polyamide, ethylene-vinyl acetate copolymer, polyvinyl alcohol, acrylic, and the like. Synthetic resins, foams of these synthetic resins, ethylene-propylene copolymer rubber, ethylene-propylene-diene copolymer rubber, styrene-butadiene copolymer rubber, styrene-isoprene-styrene block copolymer rubber, styrene-butadiene-styrene block It can be arbitrarily selected from copolymer rubber, rubber such as polyurethane, organic or inorganic non-woven fabric, synthetic paper, metal foil such as aluminum, iron, gold, silver, and the like.

[Pattern layer]
The picture pattern layer 3 is a layer for imparting concealability or design properties, and can be provided on the thermoplastic resin layer 4 by printing picture ink on the entire surface or partially.
Binders for design inks may be appropriately selected from, for example, nitrocellulose, cellulose, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polyurethane, acrylic, polyester, and the like, either alone or modified. They may be aqueous, solvent-based, or emulsion-based, and the curing method may be arbitrarily selected from a one-liquid type and a two-liquid type using a curing agent. Furthermore, it is also possible to cure the ink by irradiation with active energy rays such as ultraviolet rays and electron beams.

As pigments for pattern inks, for example, various known pigments such as condensed azo, insoluble azo, quinacridone, isoindoline, anthraquinone, imidazolone, cobalt, phthalocyanine, carbon, titanium oxide, iron oxide, and pearl pigments such as mica are used. can do. These ink materials need to be selected in consideration of adhesiveness to the thermoplastic resin layer 4 under the picture pattern layer 3 and the resin laminated on the picture pattern layer 3 .

Various additives such as an ultraviolet absorber, a radical scavenger, and a dispersant may be added to the pattern layer 3 as necessary. The pattern layer 3 may be provided directly on the thermoplastic resin layer 4 by a known printing technique such as gravure printing, offset printing, screen printing, flexographic printing, silk printing, electrostatic printing, or inkjet printing. can be done. In addition to the application of ink, it is also possible to impart a metallic design by vapor deposition or sputtering of various metals.

[Base material]
In this embodiment, the above-described decorative sheet 8 may be attached to the base material 7 to form the decorative board 9 . Specifically, the decorative sheet 8 is laminated on a metallic base material such as a steel plate or an aluminum plate, a wood base material such as MDF, or a resin base material such as PET, thereby achieving a high strength decorative board. 9 can be obtained.
Also, the base material 7 may be, for example, a paper material (paper-based base material) mainly composed of pulp or cellulose fibers.
When the base material 7 is a paper material, additives such as paper strength agents, additives for improving concealment, cellulose nanofibers, and colorants may be added.

When the base material 7 is a resin material (resin-based base material), it is preferable to use thermoplastic resins such as polypropylene, polyethylene, and polyester as the resin material. The thermoplastic resin may contain inorganic materials such as titanium oxide and calcium carbonate as additives. By using at least one of polypropylene, polyethylene and polyester as the thermoplastic resin, the dispersibility of the inorganic material is improved. Moreover, by using polypropylene as the thermoplastic resin, the dispersibility of the inorganic material is further improved.

Furthermore, when the base material 7 is a resin film (resin base material), it is preferable that the resin film is a film material mainly composed of polyethylene terephthalate. The resin film may contain the inorganic material described above as an additive. Moreover, when the substrate 7 is a resin film, the substrate 7 may be a uniaxially or biaxially stretched resin film. The substrate 7 formed of a uniaxially or biaxially stretched resin film may contain voids therein.

When the substrate 7 is a resin material or a resin film, the content of the inorganic material with respect to the substrate 7 is preferably in the range of 1% by mass to 90% by mass, and in the range of 5% by mass to 80% by mass. It is more preferable to be within the range of 20% by mass or more and 80% by mass or less. By setting the content of the inorganic material within the range described above, it is possible to reliably obtain sufficient noncombustibility or sufficient flame retardancy, to reliably improve printability and lamination suitability, and to prevent the generation of defects at the folded portion of the sheet. Cracks can be reliably reduced.

As the base material for fittings (base material 7), it is possible to use plywood of southern sea wood, particle board, medium-density fiberboard (MDF), ordinary plywood specified by Japanese Agricultural Standards, and the like. Also, a base material made of wood powder-added olefinic resin can be used. When the plate material is used as the base material 7, the thickness of the base material 7 is preferably in the range of 2 mm or more and 25 mm or less, more preferably in the range of 5 mm or more and 20 mm or less, and 10 mm or more and 15 mm or less. It is more preferable to be within the range. When the thickness of the base material 7 is within the above range, it is possible to improve lamination suitability and reduce cracks occurring at the folded portion of the sheet.

The base material 7 may be metal such as aluminum, resin such as plastic, or a composite material thereof. By providing the base material 7, for example, it is possible to provide the decorative plate 9 capable of suppressing the occurrence of scratches caused by the heel of the shoe or by pebbles during heavy walking.
The surface of the substrate 7 may be subjected to surface treatment such as corona treatment or plasma treatment. This improves the adhesiveness (adhesion) between the substrate 7 and the thermoplastic resin layer 4 .

[Adhesive layer]
The adhesive layer 6 is a layer made of an adhesive, and is a layer for bonding the base material 7 and the thermoplastic resin layer 4 together.
As the adhesive constituting the adhesive layer 6, for example, a urethane-based adhesive, an acrylic adhesive, an ethylene-vinyl acetate copolymer, a vinyl chloride-vinyl acetate copolymer, a polyester-based adhesive, or the like can be used. In particular, in the present embodiment, a two-liquid curable urethane adhesive or the like obtained by blending polyester polyol and polyisocyanate is preferable. In addition, adding an inorganic powder such as silica, barium sulfate, or calcium carbonate to these materials to form the adhesive layer 6 is effective in preventing blocking during winding and storage, and in improving the adhesive force due to the anchoring effect. .

The constituent material of the adhesive layer 6 is not particularly limited as long as it contributes to the improvement of the adhesive strength between arbitrary resins. can be used. As the constituent material of the adhesive layer 6, generally, a two-liquid curing type polyurethane adhesive having a high cohesion of the coating film is often used. Also, the coating method can be appropriately selected depending on the coating liquid viscosity and the like. The layer thickness of the adhesive layer 6 is preferably about 0.5 μm to 6 μm.

[Adhesive resin layer]
An adhesive resin layer (not shown) is provided as necessary in order to bond the thermoplastic resin layer 4 provided with the picture pattern layer 3 and the transparent thermoplastic resin layer 2 together. If the target adhesive strength can be obtained without the adhesive resin layer, or if the transparent thermoplastic resin layer 2 is not provided, it may not be necessary.
As the constituent material of the adhesive resin layer, the same constituent material as that of the adhesive layer 6 may be used.

(Manufacturing method of decorative sheet and decorative board)
An example of a method for manufacturing the decorative sheet 8 according to this embodiment will be briefly described below.
The thermoplastic resin layer 4 and the pattern layer 3 described above are laminated in this order.
Next, the transparent thermoplastic resin layer 2 is formed on the pattern layer 3, and at the same time, the embossed portions 5 are formed on the surface of the transparent thermoplastic resin layer 2 by embossing. Here, the shape of the embossed portion 5 is such that the arithmetic mean roughness Ra defined by JIS B 0601 is in the range of 2.0 μm or more and 10.0 μm or less, and the ten point average roughness defined by JIS B 0601 It is formed so that the roughness Rz is in the range of 20.0 μm to 40.0 μm.

Next, a coating liquid for forming the surface protective layer 1 is applied to the surface of the transparent thermoplastic resin layer 2 on which the embossed portions 5 are formed. At this time, the thickness of the coating liquid for forming the surface protective layer 1 is uniform on the surface of the transparent thermoplastic resin layer 2 . Therefore, on the surface of the coating liquid for forming the surface protective layer 1, the same shape as the uneven shape formed on the surface of the transparent thermoplastic resin layer 2 is formed.
Finally, the surface protective layer 1 is formed on the transparent thermoplastic resin layer 2 by curing the coating liquid. In this coating liquid curing step, the shape of the coating liquid for forming the surface protective layer 1 is maintained as it is. The roughness Ra is within the range of 2.0 μm or more and 10.0 μm or less, and the ten-point average roughness Rz defined by JIS B 0601 is within the range of 20.0 μm or more and 40.0 μm.
Thus, the decorative sheet 8 according to this embodiment is formed.

An example of a method for manufacturing the decorative board 9 according to this embodiment will be briefly described below.
The above-described decorative sheet 8 and base material 7 are bonded together with the above-described adhesive layer 6 interposed therebetween.
Finally, the adhesive layer 6 is cured to form the decorative board 9 .

[Example]
(Example 1)
On a thermoplastic resin layer made of an olefin material, a wood grain pattern was printed as a picture pattern layer with a gravure printing machine.
Next, a transparent thermoplastic resin layer made of an olefin material was laminated on the pattern layer by extrusion lamination. At this time, the surface of the transparent thermoplastic resin layer had an arithmetic mean roughness Ra defined by JIS B 0601 of 3.9 µm, and a ten-point mean roughness Rz defined by JIS B 0601 of 26.7 µm. rice field. Also, the uneven pattern formed on the surface of the transparent thermoplastic resin layer was the pattern shown in FIG. 3(a). That is, in Example 1, the projections (protrusions) or recesses were continuously and irregularly formed on the surface of the transparent thermoplastic resin layer.
After that, a thermosetting resin (UC clear manufactured by DIC Graphics Co., Ltd.) was applied to a thickness of 6 μm as a surface protective layer.
Thus, a decorative sheet according to Example 1 was obtained.

(Example 2)
A decorative sheet according to Example 2 was obtained in the same manner as in Example 1, except that the constituent resin of the surface protective layer was changed to an ultraviolet curable resin (a urethane acrylate resin manufactured by DIC Graphics Corporation). Also, the uneven pattern formed on the surface of the transparent thermoplastic resin layer was the pattern shown in FIG. 3(a). In addition, in Example 2, the thickness of the surface protective layer was set to 9 μm.

(Example 3)
On the surface of the transparent thermoplastic resin layer, the arithmetic average roughness Ra specified by JIS B 0601 was 6.6 μm, and the ten-point average roughness Rz specified by JIS B 0601 was 37.4 μm. A decorative sheet according to Example 3 was obtained in the same manner as in Example 1. The uneven pattern formed on the surface of the transparent thermoplastic resin layer was the pattern shown in FIG. 3(b).

(Comparative example 1)
On the surface of the transparent thermoplastic resin layer, the arithmetic average roughness Ra specified by JIS B 0601 was 1.5 μm, and the ten-point average roughness Rz specified by JIS B 0601 was 21.3 μm. A decorative sheet according to Comparative Example 1 was obtained in the same manner as in Example 1.

(Comparative example 2)
On the surface of the transparent thermoplastic resin layer, the arithmetic average roughness Ra specified by JIS B 0601 was 11.3 μm, and the ten-point average roughness Rz specified by JIS B 0601 was 37.2 μm. A decorative sheet according to Comparative Example 2 was obtained in the same manner as in Example 1.

<Evaluation>
The "60° gloss value" and "gloss difference" of the decorative sheets obtained in the above examples and comparative examples were evaluated by the following methods. The evaluation results are shown in Table 1 below. The "arithmetic average roughness Ra" and the "ten-point average roughness Rz" were measured by the following methods.

(Measurement of arithmetic average roughness Ra and ten-point average roughness Rz)
The arithmetic mean roughness Ra defined by JIS B 0601 and the ten-point mean roughness Rz defined by JIS B 0601 on the surface of the surface protective layer of the decorative sheet obtained in the above Examples and Comparative Examples were Each was measured using a small surface roughness measuring instrument Surftest SJ-410 manufactured by Mitutoyo Corporation.
For the arithmetic average roughness Ra and the ten-point average roughness Rz in this example, the average values obtained by measuring different points of the surface protective layer 10 times were used.

(Measurement of 60° gloss value and gloss difference)
Glossiness at three angles of 20 degrees, 60 degrees, and 85 degrees (that is, 20 degrees specular glossiness, 60 degrees specular glossiness, 85 degrees Specular gloss) was measured using a Micro Trigloss 3-angle surface gloss meter manufactured by Tetsutani Co., Ltd.
For each degree of glossiness in this example, an average value obtained by measuring 10 different points on the surface protective layer was used.

Here, the “60° gloss value” means the 60° specular gloss (Gs60) specified in JIS B 0601. The term "glossiness difference" means the difference between the 20-degree specular glossiness (Gs20) and the 85-degree specular glossiness (Gs80).
In addition, the criteria in the "evaluation" were as follows.
○: "60° gloss value" is 5.0 or less and "gloss difference" is 6.0 or less.
x: "60° gloss value" is more than 5.0. Alternatively, the "gloss difference" is more than 6.0.

As shown in Table 1, in the decorative sheets according to the present embodiment exemplified in Examples 1 to 3, the arithmetic mean roughness Ra defined by JIS B 0601 on the surface of the surface protective layer is 2.0 μm or more. 10.0 μm or less, and the ten-point average roughness Rz specified in JIS B 0601 is in the range of 20.0 μm or more and 40.0 μm. ) was 5.0 or less, and the matte feeling was excellent.
Further, as shown in Table 1, in the decorative sheet according to the present embodiment exemplified in Examples 1 to 3, the difference in gloss on the surface of the surface protective layer (value of 20 degree specular glossiness Gs20 and 85 degree specular glossiness The difference from the value of degree Gs85) is 6.0 or less, and the degree of gloss does not change depending on the viewing angle.

The decorative sheet of the present invention relates to a decorative sheet used for construction materials such as interior and exterior construction materials, surfaces and frame materials for fittings, surface materials for home electric appliances, flooring materials, and the like, and includes wooden boards and inorganic boards. , a metal plate or the like to be used as a decorative plate.

DESCRIPTION OF SYMBOLS 1... Surface protective layer 2... Transparent thermoplastic resin layer 3... Pattern layer 4... Thermoplastic resin layer 5... Embossed part 6... Adhesive layer 7... Base material 8: Decorative sheet 9: Decorative plate

Claims (9)

A decorative sheet comprising a thermoplastic resin layer, a picture pattern layer, and a surface protective layer in this order,
An uneven shape is formed on the surface of the surface protective layer,
The arithmetic mean roughness Ra defined by JIS B 0601 on the surface of the surface protective layer on which the uneven shape is formed is in the range of 2.0 μm or more and 10.0 μm or less, and is defined by JIS B 0601 A decorative sheet characterized by having a ten-point average roughness Rz in the range of 20.0 μm to 40.0 μm. 2. The decorative sheet according to claim 1, wherein the arithmetic mean roughness Ra is in the range of 1.0 [mu]m to 8.0 [mu]m. 2. The decorative sheet according to claim 1, wherein the arithmetic mean roughness Ra is in the range of 3.9 [mu]m to 6.6 [mu]m. The decorative sheet according to any one of claims 1 to 3, wherein the ten-point average roughness Rz is in the range of 25.0 µm or more and 38.0 µm or less. The decorative sheet according to any one of claims 1 to 3, wherein the ten-point average roughness Rz is in the range of 26.7 µm or more and 37.4 µm or less. 6. The makeup according to any one of claims 1 to 5, wherein the 60-degree specular gloss measured from the outer layer side of the decorative sheet according to JIS Z8741:1997 is 5.0 or less. sheet. The difference between the 85-degree specular gloss measured from the outer layer side of the decorative sheet according to JIS Z8741: 1997 and the 20-degree specular gloss measured from the outer layer side of the decorative sheet according to JIS Z8741: 1997 7. The decorative sheet according to any one of claims 1 to 6, wherein the range is 0.0 or more and 6.0 or less. A decorative board comprising the decorative sheet according to any one of claims 1 to 7 and a base material laminated via an adhesive layer. A method for manufacturing a decorative sheet according to any one of claims 1 to 7,
forming an uneven shape on the surface of the transparent thermoplastic resin layer of a laminate comprising a thermoplastic resin layer, a picture pattern layer, and a transparent thermoplastic resin layer in this order;
forming a surface protective layer on the surface of the transparent thermoplastic resin layer on which the uneven shape is formed;
In the step of forming the uneven shape, the surface of the transparent thermoplastic resin layer on which the uneven shape is formed has an arithmetic mean roughness Ra defined by JIS B 0601 in the range of 2.0 μm or more and 10.0 μm or less. and the ten-point average roughness Rz specified in JIS B 0601 is in the range of 20.0 μm to 40.0 μm. Method.

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