JP2023010969A - Decorative sheet and decorative sheet wound body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet having a superior effect of suppressing surface gloss, and a superior antifouling effect and superior fingerprint resistance.

SOLUTION: A decorative sheet 10 of the present invention is provided with, in the following order, a concealing layer 12, a printing layer 14, a transparent film 16, and a resin coating layer 20 containing a matte filler 18. The surface of the resin coating layer 20 is provided with protruding parts 20a that conform to the shape of the matte filler 18.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2023,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a decorative sheet and a wound body in which the decorative sheet is wound around a core.

2. Description of the Related Art In the construction of inner walls and exterior walls of houses, buildings, etc., decorative sheets are sometimes applied in order to enhance the design of the walls. By forming embossing on the surface of the decorative sheet, the luster of the surface is suppressed to impart designability, and contamination such as fingerprints is suppressed. Patent Literature 1 discloses a decorative sheet having a surface on which an uneven pattern of a mold is transferred.

Further, decorative sheets have conventionally been produced by molding using a press machine. Due to the characteristics of the press machine, the maximum length of the decorative sheet was limited to 10 shaku (3 m), and the application surface was limited to a flat surface, and it was not possible to perform application (applying to a curved surface) on a curved surface. In recent years, decorative sheets that can be applied to curved surfaces have also been developed, but the radius of curvature that can be applied is large, and the application surface has been limited. Patent Document 2 discloses a decorative sheet provided with a coat layer containing a melamine resin.

JP 2016-128217 A JP 2018-24238 A

However, in the conventional technique described in Patent Document 1, the embossed shape is created by pressing the unevenness of the mold against the surface layer. If it is not placed on the surface, there may be a portion where the embossed shape is not formed or a portion where the embossed shape is processed to a shallow depth. Therefore, conventional decorative sheets have room for improvement in terms of suppressing surface luster and suppressing contamination such as fingerprints.

If the decorative sheet can be provided as a roll wound around a roll core, it will be excellent in construction workability and easy to transport and carry. Patent Literature 2 does not describe the use of a decorative sheet as a roll, and there is room for improvement in application to curved surfaces.

As a result of intensive studies, the present inventors have found that the problems of suppressing the glossiness of the surface of the decorative sheet and suppressing contamination such as fingerprints can be solved by making the surface of the resin coat layer have a specific shape. Completed the provided invention.

According to the invention,
an obscuring layer;
a printing layer;
a transparent film;
and a resin coat layer containing a matte filler in this order,
The decorative sheet is provided, wherein the resin coat layer has convex portions following the shape of the matte filler on its surface.

Furthermore, the inventors of the present invention have a problem of improving construction workability, transportation, carrying in, etc. by forming a wound body in which a strip-shaped melamine decorative sheet having a predetermined length in the longitudinal direction is wound around a winding core. found that the above can be solved, and completed the invention provided below.

According to the invention,
a release layer;
an obscuring layer;
a printing layer;
a transparent film;
a resin coat layer containing a melamine-based resin;
A decorative sheet roll obtained by winding a belt-shaped decorative sheet provided in this order around a core,
A decorative sheet roll is provided in which the length of the decorative sheet in the longitudinal direction is 4 m or more.

The present inventors have found that the coating layer of the decorative sheet having a specific layer structure has a predetermined thickness, and the decorative sheet is used as a roll, thereby improving workability, transportation, carrying in, etc. We have found that the problem can be solved, and completed the invention provided below.

According to the invention,
a release layer;
an obscuring layer;
a printing layer;
a transparent film;
a resin coat layer;
A decorative sheet roll obtained by winding a belt-shaped decorative sheet provided in this order around a core,
Provided is the decorative sheet roll, wherein the resin coat layer contains a melamine resin or a thermoplastic resin and has a layer thickness of 12 μm or less.

ADVANTAGE OF THE INVENTION According to this invention, the decorative sheet excellent in the effect of suppressing the luster of the surface, an antifouling effect, and anti-fingerprint property can be provided. Furthermore, the decorative sheet of the present invention can obtain a decorative sheet having the effect by incorporating a matting filler into the resin coat layer, and has a structure excellent in production stability.
Furthermore, according to the present invention, it is easy to apply to a curved surface part, it can be applied in a wide range at once, and has excellent workability, and the number of wound bodies required for the construction area can be reduced. It is possible to provide a decorative sheet roll that can be easily transported and carried.

It is a schematic sectional drawing which shows typically the decorative sheet in this embodiment. 1 is a schematic perspective view illustrating the structure of a decorative sheet roll according to an embodiment; FIG. 1 is a schematic cross-sectional view of a decorative material sheet that constitutes a decorative sheet roll according to an embodiment; FIG. It is a schematic process flow figure which shows the manufacturing method of the decorative sheet roll concerning embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in all the drawings, the same constituent elements are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. In addition, "~" represents "more than" to "less than" unless otherwise specified.

<Decorative sheet>
FIG. 1 is a sectional view showing the structure of the decorative sheet of this embodiment.
As shown in FIG. 1, the decorative sheet 10 of this embodiment comprises a concealing layer 12, a printed layer 14, a transparent film 16, and a resin coat layer 20 containing a matte filler 18 in this order. The resin coat layer 20 has convex portions 20 a following the shape of the matting filler 18 on its surface.
The layer thickness of the decorative sheet 10 as a whole is about 0.1 mm to 2 mm.

[Concealing layer 12]
The concealing layer 12 can conceal the construction surface located on the back side of the surface facing 14, and the construction surface is not visible from the resin coat layer 20 side. Furthermore, when viewed from the resin coat layer 20 side, the concealing layer 12 can improve the visibility of the pattern of the printed layer 14 and change the color by combining with the printed layer 14 described later.
The concealing layer 12 can be composed of a resin film 12a and a metal deposition layer 12b.

The resin film 12a can contain a thermoplastic resin, a curable resin material, etc. Specifically, polyolefin such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), Cyclic polyolefin (COP), modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide (e.g. nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6-12, nylon 6-66), polyimide, polyamideimide, polycarbonate (PC), poly-(4-methylpentene-1), ionomer, acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile - styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), polybutylene terephthalate (PBT) , polyester such as polycyclohexane terephthalate (PCT), polyether, polyetherketone (PEK), polyetheretherketone (PEEK), polyetherimide, polyacetal (POM), polyphenylene oxide, modified polyphenylene oxide, polysulfone, polyether sulfone Phong, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride, other fluorine resins, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, Various thermoplastic elastomers such as polybutadiene, transpolyisoprene, fluororubber, and chlorinated polyethylene, epoxy resin, phenolic resin, urea resin, melamine resin, unsaturated polyester, silicone resin, urethane resin, polyparallel xylylene, poly-monochloro-para-xylylene, poly-dichloro-para-xylylene, poly-monofluoro-para-xylylene -para-xylylene), polymo poly-para-xylylene resin such as poly-monoethyl-para-xylylene, etc., or copolymers, blends, polymer alloys, etc. mainly composed of these, and selected from these At least one type can be included. In this embodiment, a polyvinyl chloride film is preferred.

The metal deposition layer 12b is formed on one surface of the resin film 12a and can contain at least one of aluminum oxide, silicon oxide, silicon nitride, and silicon oxynitride.
The layer thickness of the masking layer 12 is about 10 μm to 300 μm as a whole.
An adhesive layer (not shown) may be provided on the surface of the concealing layer 12 opposite to the surface facing the printed layer 14 so that it can be attached to a construction surface (such as a wall surface).

[Print layer 14]
The printed layer 14 has various patterns such as a wood grain pattern, a stone pattern, and a geometric pattern, and the patterns are visually recognized by the user when viewed from the resin coat layer 20 side.

The print layer 14 can contain a resin and a colorant such as a pigment or a dye, and various patterns are formed by the colorant. Examples of the resin contained in the printed layer 14 include the resins exemplified for the resin film 12a.
The layer thickness of the printing layer 14 is 0.1 to 15 μm, preferably 1 to 5 μm.

[Transparent film 16]
The decorative sheet of the present embodiment has excellent flexibility due to the provision of the transparent film 16 . Furthermore, the light reflected by the printed layer 14 is transmitted, and the pattern of the printed layer 14 can be visually recognized by the user.

As the resin contained in the transparent film 16, the resin exemplified for the resin film 12a can be mentioned, and polyethylene terephthalate is preferably contained.
The thickness of the transparent film 16 is about 10 μm to 300 μm.

[Resin coat layer 20]
The resin coat layer 20 has convex portions 20 a following the shape of the matting filler 18 on its surface. The decorative sheet 10 of the present embodiment is provided with the resin coat layer 20 having the protrusions 20a, thereby suppressing the luster and providing excellent aesthetics, as well as preventing contaminants from adhering to the sheet and having excellent antifouling effect and anti-fingerprint properties.

From the viewpoint of the effects of the present invention, the average particle diameter of the matting filler 18 is preferably larger than the average film thickness of the resin coat layer 20 .
The average particle size of the matting filler 18 is 3 μm to 100 μm, preferably 5 to 70 μm, more preferably 5 to 50 μm. The average film thickness of the resin coat layer 20 is 2 μm to 80 μm, preferably 4 to 50 μm, more preferably 5 to 30 μm.

The surface roughness (arithmetic mean height (μm) Sa) of the surface of the resin coat layer 20 is 0.1 to 10 μm, preferably 0.2 to 7 μm, more preferably 0.5 to 5 μm. If the surface roughness of the surface of the resin coat layer 20 is within the above range, it is possible to provide a decorative sheet which is excellent in surface luster suppressing effect, antifouling effect and anti-fingerprint property.

Furthermore, in the decorative sheet 10 of the present embodiment, the ratio of the area of the matting filler 18 to the area (100%) of the surface of the resin coat layer 20 (matting filler 18) is 5 to 60%, preferably 10 to 50%, more preferably 15 to 40%. If the area ratio of the matting filler 18 is within the above range, it is possible to provide a decorative sheet which is excellent in surface luster suppressing effect, antifouling effect and anti-fingerprint property.
The area ratio of the matte filler 18 can be obtained by binarizing the image of the surface of the resin coat layer 20 with a laser microscope and calculating the area ratio of the matte filler 18 in the resin coat layer 20 (100%). can.

From the viewpoint of the effect of the present invention, it is more preferable that both the surface roughness of the surface of the resin coat layer 20 and the area ratio of the matting filler 18 are within the above ranges.

Examples of the resin contained in the resin coat layer 20 include the resins exemplified for the resin film 12a. As the resin, a thermoplastic resin or a melamine resin is preferable. Acrylic resin is preferable as the thermoplastic resin.

The matting filler 18 contains at least one selected from acrylic resins, melamine resins, polystyrene resins and silica. Examples of the matte filler 18 include acrylic resin particles, melamine resin particles, polystyrene resin particles, silica particles, composite particles of these resins and silica, and the like. In the present embodiment, from the viewpoint of the visibility of the printed layer 14, it is preferable that an acrylic resin or a melamine-based resin is included.

Examples of the matting filler 18 include Metabrene (acrylic resin particles, manufactured by Mitsubishi Chemical Corporation), Tuftic (acrylic resin particles, manufactured by Toyobo Co., Ltd.), Techpolymer (acrylic resin particles, manufactured by Sekisui Plastics Co., Ltd.), Techpolymer (polystyrene resin particles, manufactured by Sekisui Plastics Co., Ltd.), silica particles (manufactured by Denka), Eposter (melamine resin particles, manufactured by Nippon Shokubai Co., Ltd.), Optobeads (melamine resin/silica composite particles, manufactured by Nissan Chemical Co., Ltd.), etc. be able to.

If the refractive index of the matting filler 18 is significantly different from the refractive index of the resin layer constituting the resin coat layer 20 (the portion of the resin coat layer 20 other than the matting filler 18), the transparency of the resin coat layer 20 is reduced. As a result, the matting effect of the resin coat layer 20 is not sufficiently exhibited, and the design of the appearance is deteriorated. Therefore, from the viewpoint of improving the design of the appearance, it is preferable that the matting filler 18 be made of a transparent material having a refractive index difference of 0.2 or less with respect to the resin forming the resin coat layer 20 .

The refractive index of the resin constituting the resin coat layer 20 is about 1.4 to 1.7, and the preferably used melamine resin is about 1.6. 0.3 to 1.8.

The difference between the linear expansion coefficient of the resin constituting the resin coating layer 20 and the linear expansion coefficient of the matting filler 18 is 10×10 ⁻⁵ /° C. or less, preferably 8×10 ⁻⁵ /° C. or less, more preferably 5× 10 ⁻⁵ /° C. or less. Within this range, the difference in the degree of expansion and contraction between the matting filler 18 and the resin constituting the resin coat layer 20 due to temperature changes is small, and the plurality of protrusions 20a of the resin coat layer 20 can be maintained, and in turn, the gloss can be maintained. It is possible to stably obtain the effect of suppressing the

In the present embodiment, the resin coat layer 20 is a combination in which the base resin is a melamine resin and the resin contained in the matting filler 18 is an acrylic resin, or the base resin is a thermoplastic resin and the matting filler 18 A combination in which the included resin is a melamine-based resin is preferred.

[Method for manufacturing decorative sheet]
The decorative sheet 10 of this embodiment can be produced by laminating the masking layer 12, the printed layer 14, the transparent film 16, and the resin coat layer 20 containing the matting filler 18 in this order.

Specifically, in the present embodiment, the printing step a of forming the printed layer 14 on one surface of the transparent film 16, the step b of forming the resin coat layer 20 on the other surface of the transparent film 16, printing laminating the layer 14 to one side of the obscuring layer 12; Furthermore, a step d of forming a release layer on the other surface of the masking layer 12 can be included.

In the printing step a, the printed layer 14 can be formed on one surface of the transparent film 16 by various printing methods. Examples of the printing method include an inkjet method, a screen printing method, a gravure printing method, and a octopus printing method. Inks typically contain a colorant as a solid content. As the coloring agent, for example, various pigments and various dyes can be used. The ink may contain a solvent.

In step b, a resin coat layer 20 is formed on the surface of the transparent film 16 opposite to the surface on which the printed layer 14 is formed.
The resin coating layer 20 is formed by various methods such as dipping, spraying, coating using various coaters such as kiss coater, comma coater, roll coater, knife coater and blade coater, and various printing methods. A layer made of a coating layer-forming composition is formed on the surface of the transparent film 16 . After that, the resin coat layer 20 can be formed by performing a curing reaction.

The composition for forming the resin coat layer used for forming the resin coat layer 20 contains the above-described resin and/or its precursor that constitutes the resin coat layer 20 and the matting filler 18 .

The volume of the matting filler 18 can be 0.1 to 10 times, preferably 0.5 to 8 times, more preferably 1 to 5 times the volume of the resin and/or its precursor. . As a result, the resin coat layer 20 can efficiently form the protrusions 20a following the shape of the matting filler 18 on its surface, and is excellent in the effect of suppressing the luster of the surface, the antifouling effect, and the anti-fingerprint property. A decorative sheet can be obtained.

The composition for forming a resin coat layer can be obtained by mixing a resin and/or a precursor thereof, a matting filler 18, and, if necessary, a solvent or the like by a known method. By using a solvent, the composition can easily follow the shape of the matting filler 18 and can efficiently form the protrusions 20a. This facilitates handling of the layer-forming composition. Also, the adhesion between the transparent film 16 and the resin coat layer 20 can be improved.
A polar solvent can be preferably used as the solvent contained in the composition for forming a resin coat layer.

Specifically, water; alcoholic solvents such as methanol, ethanol and isopropanol; ketone solvents such as methyl ethyl ketone and acetone; amide solvents such as dimethylformamide (DMF); ether solvents such as tetrahydrofuran (THF) and tetrahydropyran. ; and sulfoxide solvents such as dimethyl sulfoxide (DMSO).

The composition for forming a resin coat layer may optionally contain a catalyst, a release agent, a polymerization initiator, a slip agent (leveling agent), a dispersant, a polymerization accelerator, a polymerization inhibitor, a permeation accelerator, a wetting agent (moisturizing agent). agents), colorants, fixing agents, antifungal agents, preservatives, antioxidants, chelating agents, thickeners, antifoaming agents, sensitizers (sensitizing dyes), and the like.

In step c, the printed layer 14 is laminated on the metal deposition layer 12b of the masking layer 12. As shown in FIG. The printed layer 14 and the metal deposition layer 12b can also be laminated via an adhesive layer. Furthermore, an adhesive layer and a release layer can be laminated on the resin film 12a of the concealing layer 12. FIG. When applying the decorative sheet 10 to a wall surface or the like, the release layer can be peeled off and the decorative sheet 10 can be attached to the applied surface via an adhesive layer.

Although the embodiments of the present invention have been described above, these are merely examples of the present invention, and various configurations other than those described above can be employed within the scope that does not impair the effects of the present invention.
In the present embodiment, the concealing layer 12 is composed of the resin film 12a and the metal deposition layer 12b. It can be composed only of a colored resin film 12a, or it can be composed of a resin film 12a whitened by internal voids.

<Decorative sheet roll>
The decorative sheet roll of the present invention will be described according to a first embodiment or a second embodiment.

[First embodiment]
As shown in FIG. 2 , the decorative sheet roll (melamine decorative sheet roll) 30 of the present embodiment has a structure in which the strip-shaped melamine decorative sheet 10 is wound around a core 20 . The length of the melamine decorative sheet 10 in the longitudinal direction can be 4 m or longer, preferably 8 m or longer, and more preferably 12 m or longer. With the decorative sheet roll 30 of the present embodiment, it is possible to provide the decorative sheet 10 that is long in the longitudinal direction, and to reduce the number of joints between the decorative sheets 10 that occur on the construction surface. The design of the product is improved. Furthermore, it is possible to provide a roll of decorative sheet that can be easily applied to a curved portion, has excellent workability, and can be easily transported and carried.
In addition, the upper limit of the length of the melamine decorative sheet 10 in the longitudinal direction is about 50 m or less from the viewpoint of construction workability and construction area.
Furthermore, in the decorative sheet roll 30 of the present embodiment, the core 20 has an outer diameter of 190 mm or less. As a result, it is possible to provide a roll of decorative sheet that is superior in workability and that is easier to transport and carry because the outer diameter of the roll is smaller. Additionally, you can save storage space.

The melamine decorative sheet 10 may be wound around the core 20 in a roll shape so that the melamine resin coat layer 22 described later is on the inside (on the side of the core 20) and the release layer 11 is on the outside. can.

FIG. 3 shows a schematic cross-sectional view of a decorative material sheet that constitutes the decorative sheet roll. As shown in FIG. 3, the melamine decorative sheet 10 of this embodiment includes a release layer 11, a concealing layer 12, a printing layer 14, a transparent film 16, and a melamine resin coat layer 22 in this order.
By using a melamine decorative sheet having a specific layer structure, the decorative sheet roll 30 of the present embodiment can be suitably provided.

The layer thickness of the melamine resin coat layer 22 is preferably 12 μm or less.
Thus, by setting the melamine resin coating layer 22 to a predetermined thickness in the decorative sheet having a specific layer structure, the decorative sheet is thinned and has excellent flexibility, so that it can be easily applied to curved surfaces. It is excellent in workability and can be manufactured into a roll by winding a long decorative sheet in the longitudinal direction. Therefore, the wound body of the present invention can be applied to a wide range at once with the wound decorative sheet, and has excellent workability, and can reduce the number of wound bodies required for the construction area. It can be easily transported and carried in.

Furthermore, by using the decorative sheet 10 of the present embodiment, in the decorative sheet roll 30, the length of the strip-shaped decorative sheet 10 in the longitudinal direction can be set to 4 m or more, and the outer diameter of the core 20 can be set to 4 m or more. can be 190 mm or less. As a result, it is possible to provide a roll of decorative sheet that is superior in workability and that is easier to transport and carry because the outer diameter of the roll is smaller.
Each layer constituting the melamine decorative sheet 10 will be described below.

(Release layer 11)
The melamine decorative sheet 10 is provided with a peelable release layer 11 on the side opposite to the design side (the side of the melamine resin coat layer 22). Examples of the release layer 11 include paper such as kraft paper, polyolefins such as polyethylene and polypropylene, and resin films made of polymer materials including polyesters such as ethylene vinyl acetate, polyurethane, and polyethylene terephthalate. The thickness of the release layer 11 is about 5 μm or more and 300 μm or less.
The release surface of the release layer 11 may be coated with a release agent such as a silicone-containing material or a fluorocarbon-containing material, if desired.

(Hiding layer 12)
The concealing layer 12 can conceal the construction surface located on the back side of the surface facing the printed layer 14, and the construction surface is not visible from the melamine resin coat layer 22 side.

Furthermore, when viewed from the melamine resin coat layer 22 side, the concealing layer 12 can improve the visibility of the pattern of the printed layer 14 and change the color by combining with the printed layer 14 described later.
Examples of materials constituting the concealing layer 12 include resin materials, metal materials, metal compounds such as metal oxides, and the like.

The resin material can include thermoplastic resins, curable resin materials, etc. Specifically, polyolefins such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), Cyclic polyolefin (COP), modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide (e.g. nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6-12, nylon 6-66), polyimide, polyamideimide, polycarbonate (PC), poly-(4-methylpentene-1), ionomer, acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile - styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), polybutylene terephthalate (PBT) , polyester such as polycyclohexane terephthalate (PCT), polyether, polyetherketone (PEK), polyetheretherketone (PEEK), polyetherimide, polyacetal (POM), polyphenylene oxide, modified polyphenylene oxide, polysulfone, polyether sulfone Phong, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride, other fluorine resins, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, Various thermoplastic elastomers such as polybutadiene, transpolyisoprene, fluororubber, and chlorinated polyethylene, epoxy resin, phenolic resin, urea resin, melamine resin, unsaturated polyester, silicone resin, urethane resin, polyparaxylyl poly-para-xylylene, poly-monochloro-para-xylylene, poly-dichloro-para-xylylene, poly-monofluoro-para-xylylene para-xylylene), polymonoethyl poly-para-xylylene (poly-monoethyl-para-xylylene) and other poly-para-xylylene resins, or copolymers, blends, polymer alloys, etc. mainly composed of these, and at least one selected from these can contain. In this embodiment, a polyvinyl chloride film or a polyethylene terephthalate film is preferred.

Further, the concealing layer 12 can contain, for example, white pigments such as titanium oxide and zinc oxide; black pigments such as carbon black; other pigments; various dyes;

By including such a component, the properties of the concealing layer 12 other than the concealing property (for example, adhesion to the printed layer 14, toughness, flexibility, etc.) are more effectively prevented from deteriorating, while the concealing layer 12 can further improve the concealability.

Concealing layer 12 is preferably made of a material containing at least one of titanium oxide and zinc oxide in addition to the resin material. As a result, the durability of the decorative sheet 10 can be improved, and the concealing layer 12 can be configured to have a high brightness white color or a metallic luster.
The film thickness of the concealing layer 12 is about 10 μm to 300 μm.

If the masking layer 12 does not contain the above-described pigments, dyes, etc., the masking layer 12 may be provided with a metal deposition layer between the printed layer 14 and the masking layer 12 . The metal deposition layer can contain at least one of aluminum oxide, silicon oxide, silicon nitride, and silicon oxynitride.

An adhesive layer (not shown) may be provided on the surface of the concealing layer 12 facing the peeling layer 11 so that the peeling layer 11 can be peeled off and pasted onto a construction surface (such as a wall surface) via the adhesive layer. can.

(Print layer 14)
The printed layer 14 has various patterns such as a woodgrain pattern, a stone pattern, and a geometric pattern, and when the user views the printed layer 14 from the melamine resin coat layer 22 side, the patterns are visually recognized.

The print layer 14 can contain a resin and a colorant such as a pigment or a dye, and various patterns are formed by the colorant. Examples of the resin contained in the printed layer 14 include the resins exemplified for the concealing layer 12 .
The layer thickness of the print layer 14 is about 1 μm to 10 μm as a whole.

(Transparent film 16)
By providing the transparent film (printing substrate layer) 16, the decorative sheet of the present embodiment can fix the pattern of the printing layer 14 and can also be imparted with flexibility. Furthermore, the light reflected by the printed layer 14 is transmitted, and the pattern of the printed layer 14 can be visually recognized by the user.
Examples of the resin contained in the transparent film 16 include the resins exemplified for the concealing layer 12, and polyethylene terephthalate is preferably contained.
The thickness of the transparent film 16 is about 10 μm to 300 μm.

(Melamine resin coat layer 22)
The layer thickness of the melamine resin coating layer 22 can be 12 μm or less, preferably 10 μm or less. The lower limit of the layer thickness of the melamine resin coat layer 22 is about 5 μm or more.

The melamine resin coating layer 22 contains a matting filler, and the surface thereof may be provided with projections following the shape of the matting filler. The melamine decorative sheet 10 of the present embodiment is provided with the melamine resin coating layer 22 having convex portions, thereby suppressing luster and providing excellent aesthetics, as well as being resistant to fingerprints and the like and having an excellent antifouling effect.

The average particle size of the matte filler is preferably larger than the average film thickness (12 μm or less) of the melamine resin coat layer 22 .
The matte filler has an average particle size of 3 μm to 100 μm, preferably 5 to 70 μm, more preferably 5 to 50 μm.

The surface roughness (arithmetic mean height (μm) Sa) of the surface of the melamine resin coating layer 22 is 0.1 to 10 μm, preferably 0.2 to 7 μm, more preferably 0.5 to 5 μm. If the surface roughness of the surface of the melamine resin coating layer 22 is within the above range, it is possible to provide a decorative sheet that is excellent in the effect of suppressing luster on the surface and in the antifouling effect.

Furthermore, in the melamine decorative sheet 10 of the present embodiment, the ratio of the area of the matting filler to the surface area (100%) of the surface of the melamine resin coat layer 22 (glossy area occupancy of the erasing filler) is 5 to 60%, preferably 10 to 50%, more preferably 15 to 40%. If the area ratio of the matting filler is within the above range, it is possible to provide a decorative sheet which is excellent in the effect of suppressing surface luster and the antifouling effect.

The area ratio of the matte filler can be obtained by binarizing the image of the surface of the melamine resin coat layer 22 obtained by a laser microscope and calculating the area ratio of the matte filler in the melamine resin coat layer 22 (100%). can.

The matting filler contains at least one selected from acrylic resins, melamine resins and silica. Examples of the matting filler include acrylic resin particles, melamine resin particles, polystyrene resin particles, silica particles, composite particles of these resins and silica, and the like. In the present embodiment, from the viewpoint of the visibility of the printed layer 14, it is preferable that an acrylic resin or a melamine-based resin is included.

Examples of matting fillers include Metabrene (acrylic resin particles, manufactured by Mitsubishi Chemical Corporation), Tuftic (acrylic resin particles, manufactured by Toyobo), Techpolymer (acrylic resin particles, manufactured by Sekisui Plastics Co., Ltd.), Techpolymer (polystyrene resin particles , manufactured by Sekisui Plastics Co., Ltd.), silica particles (manufactured by Denka), Optobeads (manufactured by Nissan Chemical Industries, Ltd., melamine resin/silica composite particles), Eposter (melamine resin particles, manufactured by Nippon Shokubai Co., Ltd.), etc. can be done.

If the refractive index of the matte filler is significantly different from the refractive index of the resin layer constituting the melamine resin coat layer 22 (the portion of the melamine resin coat layer 22 other than the matte filler), the transparency of the melamine resin coat layer 22 will decrease. is lowered, the matting effect of the melamine resin coat layer 22 is not sufficiently exhibited, and the design of the appearance is lowered. Therefore, from the viewpoint of improving the design of the appearance, it is preferable to use a transparent material having a refractive index difference of 0.2 or less from the resin forming the melamine resin coat layer 22 as the matting filler.

Since the refractive index of the melamine resin forming the melamine resin coating layer 22 is about 1.6, the range of the refractive index of the matte filler is about 1.4 to 1.8.

The difference between the linear expansion coefficient of the resin forming the melamine resin coating layer 22 and the linear expansion coefficient of the matting filler is 5×10 ⁻⁵ /° C. or less. Within this range, the difference in degree of expansion and contraction between the matting filler and the resin constituting the melamine resin coat layer 22 due to temperature changes is small, and the plurality of convex portions of the melamine resin coat layer 22 can be maintained. It is possible to stably obtain the suppressing effect and the antifouling effect.

In this embodiment, the melamine resin coat layer 22 preferably has a combination of a melamine-based resin as the base resin and an acrylic resin as the resin contained in the matting filler.

The layer thickness of the melamine resin coating layer 22 is 12 μm or less, and the entire melamine decorative sheet 10 is thinned and has improved flexibility, so that it can easily follow the shape of a construction surface such as a wall.
In this embodiment, the bending resistance of the melamine decorative sheet 10 can be 0.5 or more and 10 or less, preferably 1 or more and 7 or less.
As a result, the melamine decorative sheet 10 does not rise from corners or the like of the applied surface or peel off, and can exhibit its effect particularly over time.
The bending resistance test method is as follows.
Test method:
The folded decorative sheet was pressed against a digital force gauge (manufactured by Nidec-Shimpo Corporation), and the displayed value was read when the sheet-to-sheet distance at the folded end became 2 mm (1R).

[Winding core 20]
The winding core 20 has a columnar or cylindrical shape. In the decorative sheet roll 30 of the present embodiment, the thickness of the melamine resin coating layer 22 is 12 μm or less, and the entire melamine decorative sheet 10 is thinned to improve flexibility. The diameter can be 190 mm or less, preferably 90 mm or less. Note that the lower limit of the outer diameter of the winding core 20 is about 60 mm or more.

Since the outer diameter of the winding core 20 is 190 mm or less, the diameter of the decorative sheet roll 30 is reduced and the weight is reduced, so that the installation work and the transportation work are facilitated, and the storage space can be secured.

Furthermore, since the flexibility of the melamine decorative sheet 10 is improved, the number of windings around the winding core 20 can be increased, and the length of the strip-shaped melamine decorative sheet 10 in the longitudinal direction can be set to 4 m or more. can. The decorative sheet roll 30 of the present embodiment can provide the melamine decorative sheet 10 that is long in the longitudinal direction, and can reduce the number of joints between the melamine decorative sheets 10 that occur on the construction surface. The design of the construction surface is improved.

The length (length in the axial direction) of the winding core 20 is not particularly limited, but may be the same as the width of the melamine decorative sheet 10, and is preferably slightly larger from the viewpoint of workability.
Materials constituting the winding core 20 are not particularly limited as long as they have sufficient strength, and examples thereof include metals, resins, and wood. Among these materials, resin is preferable from the viewpoint of strength and weight reduction.

<Manufacturing method of decorative sheet roll>
The decorative sheet roll of this embodiment can be manufactured, for example, as shown in the process flow diagram of FIG.

First, a transparent film (printing substrate layer) 16 is supplied from a roll of a long transparent film (printing substrate layer) 16, and a printing layer 14 is formed on one surface thereof (printing step S10). .
The print layer 14 can be formed by, for example, gravure printing, inkjet printing, offset printing, or the like.

At the same time, a melamine resin coat layer 22 is formed on a surface of the transparent film (printing substrate) 16 different from the surface on which the printing layer 14 is formed. Specifically, a coating liquid containing a thermosetting resin or a thermoplastic resin is prepared (coating liquid preparation step S20), and this coating liquid is applied to the surface of the transparent film (printing substrate) 16 on which the printing layer 14 is formed. It is continuously coated on the surface different from the surface to have a predetermined film thickness, and then cured (resin coat layer forming step S30).

Various methods can be used as the coating method, and specific examples include die coating, lip coating, gravure coating, ink jet, spin coating, bar coating, roll coating, and wire bar coating. method, dip coating method, and the like. The transparent film 16 with the printed layer 14 can be continuously supplied from a long roll, and the coating liquid coating and curing steps can be performed continuously. Steps S10 to S30 can be performed continuously.
Through the above steps, a long first laminate in which the printed layer 14, the transparent film 16, and the melamine resin coat layer 22 are laminated in order can be obtained.

Separately, the concealing layer 12 is prepared and laminated on the printed layer 14 of the first laminate obtained in the previous step (concealing layer laminating step S40).

Specifically, first, a long film to be the concealing layer 12 is supplied from a roll, and an adhesive layer is formed on the surface thereof. The adhesive layer can be made of urethane resin and has a thickness of about 1 to 10 μm. The concealing layer 12 can be continuously supplied from the long roll, and the adhesive layer can be continuously formed. Then, the concealing layer 12 is continuously laminated on the surface of the printed layer 14 of the first laminate via an adhesive layer to obtain a long second laminate.

When the concealing layer 12 is composed of a resin film and a metal deposition layer, aluminum oxide, silicon oxide, silicon nitride, or silicon oxynitride is deposited on one surface of the resin film to form the metal deposition layer. do. Concealing layer 12 in which a resin film and a metal deposition layer are laminated can be provided as a long roll.

Next, the release layer 11 is laminated on the concealing layer 12 of the second laminate (release layer lamination step S50).
Specifically, an adhesive is applied to a release paper to prepare a release paper with an adhesive layer. The film thickness of the adhesive layer is about 30 μm. The release paper can be provided as a long roll, and the release paper supplied from the roll is continuously formed with an adhesive layer, and the resin film 12a of the second laminate is formed through the adhesive layer. A release paper (release layer 11) is laminated on the surface. Thereby, the elongated melamine decorative sheet 10 in which the melamine resin coat layer 22, the transparent film 16, the print layer 14, the concealing layer 12, and the release layer 11 are laminated in order can be obtained.

Finally, the melamine decorative sheet 10 is passed through a slit of a predetermined width to correct the film thickness uniformly, and wound around the winding core 20 to produce the decorative sheet roll 30 of the present embodiment (decorative sheet winding step S60).
The manufacturing method of the decorative sheet roll of the present embodiment can continuously perform the above steps.

[Second embodiment]
As shown in FIG. 2 , the decorative sheet roll 30 of the present embodiment has a structure in which the strip-shaped decorative sheet 10 is wound around a core 20 . The decorative sheet 10 is wound around the core 20 in a roll shape so that the later-described resin coat layer 22 is on the inner side (on the core 20 side) and the release layer 11 is on the outer side.

FIG. 3 shows a schematic cross-sectional view of a decorative material sheet that constitutes the decorative sheet roll. As shown in FIG. 3, the decorative sheet 10 of the present embodiment includes a release layer 11, a concealing layer 12, a printing layer 14, a transparent film 16, and a layer thickness of 12 μm or less containing a melamine resin or a thermoplastic resin. and a resin coat layer 22 are provided in this order.

In this way, by setting the resin coating layer to a predetermined thickness in the decorative sheet having a specific layer structure, the decorative sheet is thinned and has excellent flexibility, so that it is easy to apply to curved surfaces and workability. It is possible to manufacture a wound body by winding a long decorative sheet in the longitudinal direction. Therefore, the wound body of the present invention can be applied to a wide range at once with the wound decorative sheet, and has excellent workability, and can reduce the number of wound bodies required for the construction area. It can be easily transported and carried in.

Furthermore, by using the decorative sheet 10 of the present embodiment, in the decorative sheet roll 30, the length of the strip-shaped decorative sheet 10 in the longitudinal direction is 4 m or more, and the outer diameter of the winding core 20 is 190 mm or less. be able to. As a result, it is possible to provide a roll of decorative sheet that is superior in workability and that is easier to transport and carry because the outer diameter of the roll is smaller.
Each layer constituting the decorative sheet 10 will be described below. Note that the peeling layer 11, the concealing layer 12, the printing layer 14, and the transparent film 16 are the same as those in the first embodiment, and description thereof is omitted.

(Resin coat layer 22)
The resin coat layer 22 contains a thermosetting resin or a thermoplastic resin. The layer thickness of the resin coat layer 22 can be 12 μm or less, preferably 10 μm or less. The lower limit of the layer thickness of the resin coat layer 22 is about 5 μm or more.

Examples of the resin constituting the resin coat layer 22 include the resins exemplified for the concealing layer 12 of the first embodiment, and thermoplastic resins and melamine resins are preferable.

The resin coat layer 22 may contain a matting filler, and may be provided with projections following the shape of the matting filler on its surface. Since the decorative sheet 10 of the present embodiment includes the resin coat layer 22 having the protrusions, the gloss is suppressed, the aesthetics are excellent, fingerprints and the like are difficult to adhere, and the antifouling effect is also excellent.

The average particle diameter of the matte filler is preferably larger than the average film thickness (12 μm or less) of the resin coat layer 22 .
The matte filler has an average particle size of 3 μm to 100 μm, preferably 5 to 70 μm, more preferably 5 to 50 μm.

The surface roughness (arithmetic mean height (μm) Sa) of the surface of the resin coat layer 22 is 0.1 to 10 μm, preferably 0.2 to 7 μm, more preferably 0.5 to 5 μm. If the surface roughness of the surface of the resin coat layer 22 is within the above range, it is possible to provide a decorative sheet having an excellent surface luster suppressing effect and an antifouling effect.

Furthermore, in the decorative sheet 10 of the present embodiment, the ratio of the area of the matting filler to the area (100%) of the surface of the resin coat layer 22 (the ratio of the area of the matting filler area occupancy) is 5 to 60%, preferably 10 to 50%, more preferably 15 to 40%. If the area ratio of the matting filler is within the above range, it is possible to provide a decorative sheet which is excellent in the effect of suppressing surface luster and the antifouling effect.

The area ratio of the matte filler can be obtained by binarizing the image of the surface of the resin coat layer 22 obtained by a laser microscope and calculating the area ratio of the matte filler in the resin coat layer 22 (100%).

The matte filler contains at least one selected from acrylic resins, melamine resins and silica. Examples of the matting filler include acrylic resin particles, melamine resin particles, polystyrene resin particles, silica particles, composite particles of these resins and silica, and the like. In the present embodiment, from the viewpoint of the visibility of the printed layer 14, it is preferable that an acrylic resin or a melamine-based resin is included.

Examples of matting fillers include Metabrene (acrylic resin particles, manufactured by Mitsubishi Chemical Corporation), Tuftic (acrylic resin particles, manufactured by Toyobo), Techpolymer (acrylic resin particles, manufactured by Sekisui Plastics Co., Ltd.), Techpolymer (polystyrene resin particles , manufactured by Sekisui Plastics Co., Ltd.), silica particles (manufactured by Denka), Optobeads (manufactured by Nissan Chemical Industries, Ltd., melamine resin/silica composite particles), Eposter (melamine resin particles, manufactured by Nippon Shokubai Co., Ltd.), etc. can be done.

If the refractive index of the matte filler is significantly different from the refractive index of the resin layer constituting the resin coat layer 22 (the portion of the resin coat layer 22 other than the matte filler), the transparency of the resin coat layer 22 is reduced. Therefore, the matting effect of the resin coat layer 22 is not sufficiently exhibited, and the design of the appearance is deteriorated. Therefore, from the viewpoint of improving the design of the appearance, it is preferable to use a matting filler made of a transparent material having a refractive index difference of 0.2 or less from the resin forming the resin coat layer 22 .

The refractive index of the resin constituting the resin coat layer 22 is about 1.4 to 1.7, and the preferably used melamine resin is about 1.6. It becomes about 4 to 1.8.

The difference between the linear expansion coefficient of the resin forming the resin coating layer 22 and the linear expansion coefficient of the matting filler is 5×10 ⁻⁵ /° C. or less. Within this range, the difference in degree of expansion and contraction between the matting filler and the resin forming the resin coat layer 22 due to temperature changes is small, and the plurality of protrusions 20a of the resin coat layer 22 can be maintained. A suppressive effect and an antifouling effect can be stably obtained.

In the present embodiment, the resin coat layer 22 has a combination of a melamine-based resin as the base resin and an acrylic resin as the resin contained in the matting filler, or a thermoplastic resin as the base resin and contained in the matting filler. A combination in which the resin is a melamine resin is preferred.

Since the layer thickness of the resin coat layer 22 is 12 μm or less, the decorative sheet 10 as a whole is made thinner and has improved flexibility, so that it can easily follow the shape of the construction surface such as a wall.
In this embodiment, the bending resistance of the decorative sheet 10 can be 0.5 or more and 10 or less, preferably 1 or more and 7 or less.
As a result, the decorative sheet 10 does not rise from the corners of the applied surface or peel off, and can exhibit its effect particularly over time.
The bending resistance test method is as follows.
Test method:
The folded decorative sheet was pressed against a digital force gauge (manufactured by Nidec-Shimpo Corporation), and the displayed value was read when the sheet-to-sheet distance at the folded end became 2 mm (1R).

[Winding core 20]
The winding core 20 has a columnar or cylindrical shape. In the decorative sheet roll 30 of the present embodiment, the layer thickness of the resin coat layer 22 is 12 μm or less, and the entire decorative sheet 10 is thinned to improve flexibility. , 190 mm or less, preferably 90 mm or less. Note that the lower limit of the outer diameter of the winding core 20 is about 60 mm or more.

When the outer diameter of the winding core 20 is 190 mm or less, the diameter of the decorative sheet roll 30 is small, so that workability is excellent. It is possible to provide an easier decorative sheet roll. Additionally, you can save storage space.

Furthermore, since the flexibility of the decorative sheet 10 is improved, the number of windings around the core 20 can be increased, and the length of the strip-shaped decorative sheet 10 in the longitudinal direction is 4 m or more, preferably 8 m or more. More preferably, it can be 12 m or more. With the decorative sheet roll 30 of the present embodiment, it is possible to provide the decorative sheet 10 that is long in the longitudinal direction, and to reduce the number of joints between the decorative sheets 10 that occur on the construction surface. The design of the product is improved. Furthermore, it is possible to provide a roll of decorative sheet that can be easily applied to a curved portion, has excellent workability, and can be easily transported and carried.
Note that the upper limit of the length of the decorative sheet 10 in the longitudinal direction is about 50 m or less from the viewpoint of construction workability and construction area.

Although the length (length in the axial direction) of the winding core 20 is not particularly limited, it may be the same as the width of the decorative sheet 10, and is preferably slightly larger from the viewpoint of workability.
Materials constituting the winding core 20 are not particularly limited as long as they have sufficient strength, and examples thereof include metals, resins, wood, and paper. Among these materials, resin is preferable from the viewpoint of strength and weight reduction.

<Manufacturing method of decorative sheet roll>
The decorative sheet roll of the present embodiment can be manufactured according to the process flow diagram of FIG. 4 in the same manner as in the first embodiment, so the description is omitted.

Although the embodiments of the present invention have been described above, these are merely examples of the present invention, and various configurations other than those described above can be employed within the scope that does not impair the effects of the present invention.

EXAMPLES The present invention will be described in more detail below with reference to Examples, but the present invention is not limited to these.

<Example A>
[Materials used]
- Melamine-based resin constituting the resin coat layer 20 Melamine-based resin was synthesized by the following method. First, raw material melamine and formalin were charged in a reaction vessel at a predetermined mixing ratio, and after adding a catalyst, the temperature was raised to the boiling point and reflux reaction was carried out. After confirming the completion of dissolution of melamine and reaching the end point of the reaction, the resin solid content was prepared by dehydration treatment and cooled. A melamine resin was synthesized by such a method.
・Acrylic resin constituting the resin coat layer 20: Luxidia WLS-373 manufactured by DIC Corporation was used.

Matting filler acrylic resin particles constituting the resin coat layer 20 (product name: Metabrene (manufactured by Mitsubishi Chemical Corporation), average particle size: 18 μm, refractive index: 1.5, coefficient of linear expansion (10 ⁻⁵ /° C.): 8.3)
Melamine resin particles (product name: Eposter (manufactured by Nippon Shokubai Co., Ltd.), average particle size: 9 μm, refractive index: 1.68, coefficient of linear expansion (10 ⁻⁵ /° C.): 4)

[Physical property measurement method]
・Average film thickness (μm) of resin coat layer 20
The cross section was observed and measured with an electron microscope (product name: JSM-7401F, manufactured by JEOL Ltd.).

・Surface roughness (arithmetic mean height (μm): Sa)
Measurement was performed on an image of a 20-fold objective lens of a laser microscope (product name: VK-X1100, manufactured by Keyence Corporation).

・Area ratio of matte filler 18 in resin coat layer 20 (area occupation ratio)
An image with a 20x objective lens of a laser microscope (product name: VK-X1100, manufactured by Keyence Corporation) was binarized to calculate the area ratio of the matte filler 18 in the resin coat layer 20 (100%).

・Aesthetic evaluation (matte)
The decorative sheet was placed on a gypsum board (manufactured by Yoshino Gypsum Co., Ltd.) so that the concealing layer 12 was in contact with the placing plate. That is, the decorative sheet was placed on a gypsum board (manufactured by Yoshino Gypsum Co., Ltd.) so that the surface (outer surface) opposite to the surface provided with the concealing layer 12 faced upward. In this state, the decorative sheet was observed from the outer surface side, and its aesthetic properties were evaluated according to the following criteria.
A: The decorative board has a very good appearance.
B: The decorative board has an excellent appearance.
C: The decorative board has a good appearance.
D: The aesthetics of the decorative board are slightly inferior.
E: The aesthetics of the decorative board are very poor.

- Evaluation of antifouling property The decorative sheet was treated by a method conforming to the stain resistance test of JIS K 6902, and the remaining state of contaminated materials on the outer surface of the decorative sheet was confirmed and evaluated according to the following criteria.
A: No residue of contaminant material is observed on the outer surface of the decorative board.
B: Almost no residue of contaminant material is observed on the outer surface of the decorative board.
C: A slight residue of contaminant material is observed on the outer surface of the decorative board.
D: A residue of contaminant material is clearly observed on the outer surface of the decorative board.
E: Remarkable residues of contaminant material are observed on the outer surface of the decorative board.

• Fingerprint resistance Fingerprints were attached to the outer surface of the decorative sheet of each example and comparative example, visually observed, and evaluated according to the following criteria.
A: Fingerprints are clearly less conspicuous than in Comparative Example A1.
B: Fingerprints are less conspicuous than in Comparative Example A1.
C: Fingerprints are conspicuous (equivalent to or less than Comparative Example A1).

(Example A1)
First, as the transparent film 16, a polyethylene terephthalate film having an ink receiving layer was prepared. This transparent film had a thickness of 38 μm.
Next, on the side of the transparent film 16 provided with the ink-receiving layer, a printed layer 14 was formed in a predetermined pattern (wood grain pattern) by an inkjet method.
In the formation of the printed layer 14, an ink containing a coloring agent and an acrylic resin as an ultraviolet curable resin was used. Further, after the ink was ejected by the ink jet method, the ink landed on the transparent film 16 was cured by irradiating ultraviolet rays. This formed a printed layer with a thickness of 3 μm.

Next, on the side of the transparent film 16 opposite to the side on which the printed layer 14 is provided, 100 parts by mass of a melamine resin (reaction molar ratio: 1.4, resin solid content: 50% by mass) A resin composition containing 6 parts by mass of matting filler 18 (acrylic resin particles, product name: Metabrene (manufactured by Mitsubishi Chemical Corporation)) was applied to form a coating film. After that, the coating film is dried for 90 seconds in a hot air dryer at 120 ° C., and the B stage layer (consisting of a material containing a B stage curable resin (melamine resin) and matte filler 18 (acrylic resin particles) A resin coat layer 20) was obtained.
As described above, a laminate was obtained in which the printed layer 14, the transparent film 16, and the B stage layer (resin coat layer 20 containing the matting filler 18) were laminated.

On the other hand, on the surface of a white polyvinyl chloride film (80 μm, resin film 12a) made of a material containing titanium oxide, aluminum was vapor-deposited by a resistance heating vapor deposition method to form a metal vapor deposition layer 12b (thickness: 0.1 μm). , to obtain the hiding layer 12 .
Next, the printed layer 14 of the obtained laminate was laminated on the metal deposition layer 12b of the masking layer 12, and the obtained laminate was heat-pressed at 140° C. and 2 MPa for 40 minutes. As a result, the resin coat layer 20 (average film thickness: 6 μm), the transparent film 16 (thickness: 38 μm), the printed layer 14 (thickness: 3 μm), and the concealing layer 12 (thickness: 80 μm) were laminated in this order to obtain a decorative sheet 10 (melamine decorative sheet) (see FIG. 1).
The resin coat layer (D) was provided with convex portions 20a following the shape of the matte filler on its surface.
Table 1 shows the evaluation results of the aesthetic evaluation (matte) and antifouling property evaluation of the decorative sheet 10.

(Examples A2 to A5, Comparative Example A1)
A decorative sheet was produced in the same manner as in Example A1, except that the composition of each layer was changed as shown in Table-1.

As shown in Table 1, the decorative sheet of Example A, which contains a matte filler in the resin coat layer and has convex portions following the shape of the matte filler on its surface, is aesthetically pleasing (suppression of surface gloss). effect), antifouling effect and anti-fingerprint property.

<Example B>
[Example B1]
While continuously supplying a PET film from a roll in which a long polyethylene terephthalate (PET) film (base material layer) with a length of 50 m in the long direction and a thickness of 38 μm is wound, , a 3 μm-thick printed layer was continuously formed by gravure printing. At the same time, a coating liquid containing a melamine resin (resin: manufactured by Sumitomo Bakelite Co., Ltd., solvent: water) was prepared, and the coating liquid was applied to the surface of the PET film (substrate layer) opposite to the surface provided with the printed layer. was continuously coated by a die coating method and then cured to laminate a resin coating layer having a thickness of 6 μm. As described above, a long first laminate in which the printed layer, the PET film (base material layer), and the resin coat layer were laminated in order was obtained.
On the other hand, separately, the PET film is continuously supplied from a wound body in which a long polyethylene terephthalate (PET) film (base material layer) having a length of 50 m in the long direction and a thickness of 25 μm is wound, Aluminum oxide was vapor-deposited on one surface of the PET film to prepare a laminate (concealing layer) in which a metal vapor-deposited layer (thickness: 0.1 μm) was laminated on a PET film. Furthermore, an adhesive layer made of urethane resin is formed on the other surface of the PET film, and the printed layer of the first laminate is continuously laminated via the adhesive layer to obtain a long second laminate. rice field.
Next, a release paper was supplied from a long roll, and an adhesive was applied to the release paper to prepare a release paper with an adhesive layer. Then, a release paper is laminated on the concealing layer surface of the second laminate via the adhesive layer, and the resin coat layer, the transparent film (base material layer), the printing layer, the concealing layer, and the release layer are laminated in order. A laminated long decorative sheet having a length of 50 m in the longitudinal direction was obtained.
Finally, the decorative sheet was passed through a slit to correct the sheet width uniformly, and wound around a core with an outer diameter of 71 mm to produce a decorative sheet roll.

[Examples B2 to B4]
A decorative sheet roll was produced in the same manner as in Example B1 except that the layer structure shown in Table-2 was used.

[Comparative Examples B1 and B2]
A decorative sheet roll was produced in the same manner as in Example B1 except that the layer structure shown in Table 2 was used and the length of each film in the longitudinal direction was 2.4 m.

As shown in Table 2, the wound body of Example B is wound with a decorative sheet having a length of 4 m or more in the longitudinal direction, and can be applied over a wide area at once, so it is excellent in workability. rice field. Furthermore, compared to the wound body of Comparative Example B in which a decorative sheet having a short length in the longitudinal direction was wound, the wound body of Example B can reduce the number of wound bodies with respect to the construction area. It was easy to transport and bring in.

<Example C>
[Example C1]
While continuously supplying a PET film from a roll in which a long polyethylene terephthalate (PET) film (base material layer) with a length of 50 m in the long direction and a thickness of 38 μm is wound, , a 3 μm-thick printed layer was continuously formed by gravure printing. At the same time, a coating liquid containing a melamine resin (resin: manufactured by Sumitomo Bakelite Co., Ltd., solvent: water) was prepared, and the coating liquid was applied to the surface of the PET film (substrate layer) opposite to the surface provided with the printed layer. was continuously coated by a die coating method and then cured to laminate a resin coating layer having a thickness of 6 μm. As described above, a long first laminate in which the printed layer, the PET film (base material layer), and the resin coat layer were laminated in order was obtained.
On the other hand, separately, the PET film is continuously supplied from a wound body in which a long polyethylene terephthalate (PET) film (base material layer) having a length of 50 m in the long direction and a thickness of 25 μm is wound, Aluminum oxide was vapor-deposited on one surface of the PET film to prepare a laminate (concealing layer) in which a metal vapor-deposited layer (thickness: 0.1 μm) was laminated on a PET film. Furthermore, an adhesive layer made of urethane resin is formed on the other surface of the PET film, and the printed layer of the first laminate is continuously laminated via the adhesive layer to obtain a long second laminate. rice field.
Next, a release paper was supplied from a long roll, and an adhesive was applied to the release paper to prepare a release paper with an adhesive layer. Then, a release paper is laminated on the concealing layer surface of the second laminate via the adhesive layer, and the resin coat layer, the transparent film (base material layer), the printing layer, the concealing layer, and the release layer are laminated in order. A laminated long decorative sheet having a length of 50 m in the longitudinal direction was obtained.
Finally, the decorative sheet was passed through a slit to correct the sheet width uniformly, and wound around a core with an outer diameter of 71 mm to produce a decorative sheet roll.

[Examples C2 to C5]
A decorative sheet roll was produced in the same manner as in Example C1 except that the layer structure shown in Table-3 was used.

[Comparative Examples C1 and C2]
A decorative sheet roll was produced in the same manner as in Example C1 except that the layer structure shown in Table 3 was used and the length of each film in the longitudinal direction was 2.4 m.

As shown in Table 3, in the decorative sheet of Example C, the layer thickness of the resin coating layer is thinned to 12 μm or less, so the decorative sheet having a length of 50 m in the longitudinal direction is wound and wound. It was possible to manufacture a round body. Furthermore, the decorative sheet was easy to apply to the curved surface and was excellent in application properties. The wound body has a decorative sheet with a length of 50 m in the long direction, and is excellent in workability because it can be applied over a wide range at once. Compared with the wound body of Example C, the number of wound bodies with respect to the construction area was reduced, and transportation and delivery were easy.

10 Decorative sheet 12 Concealing layer 12a Resin film 12b Metal deposition layer 14 Printed layer 16 Transparent film 18 Matting filler 20, 22 Resin coat layer 20a Projection 30 Decorative sheet roll

Claims (17)

an obscuring layer;
a printing layer;
a transparent film;
and a resin coat layer containing a matte filler in this order,
The decorative sheet, wherein the resin coat layer has protrusions on its surface that follow the shape of the matte filler. The decorative sheet according to claim 1, wherein the average particle size of the matting filler is larger than the average thickness of the resin coat layer. 3. The decorative sheet according to claim 1, wherein the surface of the resin coat layer having protrusions has a surface roughness of 0.1 to 10 μm. 4. The decorative sheet according to any one of claims 1 to 3, wherein the area ratio of the matting filler on the surface of the resin coat layer provided with the protrusions is 5 to 60% when viewed from above. The decorative sheet according to any one of claims 1 to 4, wherein the resin coat layer contains a thermoplastic resin or a melamine resin. The decorative sheet according to any one of claims 1 to 5, wherein the matting filler contains at least one selected from acrylic resins, melamine resins, polystyrene resins and silica. The decorative sheet according to any one of claims 1 to 6, wherein the matte filler has an average particle size of 3 to 100 µm. When the matting filler contains acrylic resin or melamine resin,
The decorative sheet according to any one of claims 1 to 7, wherein the difference between the refractive index of the resin constituting the resin coat layer and the refractive index of the matting filler is 0.2 or less. When the matting filler contains acrylic resin or melamine resin,
The decorative sheet according to any one of claims 1 to 8, wherein the difference between the linear expansion coefficient of the resin constituting the resin coat layer and the linear expansion coefficient of the matting filler is 10 × 10 ^-5 /°C or less. The decorative sheet according to any one of claims 1 to 9, wherein the transparent film contains polyethylene terephthalate. The decorative sheet according to any one of claims 1 to 10, wherein the concealing layer comprises a polyvinyl chloride film. a release layer;
an obscuring layer;
a printing layer;
a transparent film;
a resin coat layer containing a melamine-based resin;
A decorative sheet roll obtained by winding a belt-shaped decorative sheet provided in this order around a core,
The decorative sheet roll, wherein the length of the decorative sheet in the longitudinal direction is 4 m or more. 13. The decorative sheet roll according to claim 12, wherein the core has an outer diameter of 190 mm or less. a release layer;
an obscuring layer;
a printing layer;
a transparent film;
a resin coat layer;
A decorative sheet roll obtained by winding a belt-shaped decorative sheet provided in this order around a core,
The decorative sheet roll, wherein the resin coat layer contains a melamine resin or a thermoplastic resin and has a layer thickness of 12 μm or less. 15. The decorative sheet roll according to claim 14, wherein the strip-shaped decorative sheet has a longitudinal length of 4 m or more, and the core has an outer diameter of 190 mm or less. The decorative sheet roll according to any one of claims 12 to 15, wherein the transparent film contains polyethylene terephthalate. The decorative sheet roll according to any one of claims 12 to 16, wherein the concealing layer contains polyvinyl chloride or polyethylene terephthalate.

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