JP2001062979A - Decorative sheet and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To incorporate flexibility durable against V-cutting working and to improve uniform shapability of a rugged pattern and scratch resistance by forming a decorative sheet of a laminate of a protective layer having a rough surface of a semispherical protrusion assembly and made of a curable resin and the decorative sheet having a design provided on a base material sheet of a thermoplastic resin. SOLUTION: The decorative sheet 10 is formed of a laminate of a protective layer 1 having a rough surface 33 of a semispherical surface protrusion assembly and made of a curable resin and the decorative sheet 25 having a design 2 provided on a base material sheet 5 of a thermoplastic resin. The layer 1 is formed of an ionizing radiation curable resin or the like made of a urethaneacrylateoligomer or a mixture of the urethaneacrylateoligomer and polyurethane. A transparent uncured curable resin layer and the sheet 25 are irradiated in a laminated state with an ionizing radioactive ray and the curable resin layer is cured to form the protective layer on a shaped sheet 3 having a rough surface 30 made of an assembly of semispherical recesses 31, 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative sheet used as a surface decorative material for a wooden substrate such as furniture and home electric appliances, and is used for bending such as V-cut processing and lapping processing. It belongs to a decorative sheet which is rich in properties and excellent in scratch resistance.

[0002]

2. Description of the Related Art A decorative sheet having a conventional concavo-convex pattern is formed by providing a pattern on a base sheet made of a thermoplastic resin and applying a transparent resin layer containing a filler such as a matting agent to the decorative sheet provided with the pattern. It had been. Then, the transparent resin layer was applied by coating or printing in a pattern, and after drying and curing, an uneven pattern was formed using a molding plate as needed. Furthermore, the decorative sheet is laminated with, for example, a wooden substrate via an adhesive.
Formed veneers have been widely used.

[0003] The decorative plate on which the decorative sheet is laminated is inferior in flexibility and cracks on the surface if a large amount of filler is used when performing V-cut processing for forming a V-shaped groove in order to produce furniture or the like. And inferior scratch resistance. Conversely, reducing the amount of filler is effective in preventing cracks and improving scratch resistance. However, there is a problem that the gloss varies greatly and lacks uniformity and denseness. There is also a problem that the gloss varies depending on the degree and conditions of the bending and the like. On the other hand, there is a problem that the heat resistance such as the robustness and durability of the uneven pattern due to heating is inferior because of the processing method of heating and shaping the uneven pattern after drying and curing.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a decorative sheet having an uneven pattern on the surface, wherein the decorative sheet is V
It is an object of the present invention to provide a decorative sheet and a manufacturing method which have the flexibility to withstand the cutting process, the uniform moldability of the uneven pattern, and the excellent scratch resistance.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a protective layer made of a curable resin having a rough surface composed of an aggregate of hemispherical convex portions, and a base made of a thermoplastic resin. It is a decorative sheet made of a laminate with a decorative sheet having a pattern provided on a material sheet. Further, the above-mentioned curable resin is a decorative sheet such as an ionizing radiation-curable resin comprising a urethane acrylate oligomer or a mixture of a urethane acrylate oligomer and polyurethane. Further, from a laminate of a protective layer made of a curable resin having a rough surface formed of an aggregate of hemispherical convex portions and a decorative sheet provided with a pattern on a base sheet made of a thermoplastic resin provided with a pattern. In the decorative sheet, the rough surface is formed by laminating a transparent uncured curable resin layer and a decorative sheet provided with a pattern on a shaping sheet having a rough surface formed of an aggregate of hemispherical concave portions. Thereafter, a decorative sheet is produced by irradiating ionizing radiation in a laminated state to cure the curable resin layer to form a protective layer, and then peeling off the imprinting sheet.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the present invention relates to a protective layer 1 made of a curable resin having a rough surface 33 made of an aggregate of hemispherical convex portions, and a base made of a thermoplastic resin. The decorative sheet 10 is a laminate of a decorative sheet 25 having a pattern 2 provided on a material sheet 5. Further, the protective layer made of the above-mentioned curable resin is a decorative sheet made of a urethane acrylate oligomer, or an ionizing radiation-curable resin made of a mixture of a urethane acrylate oligomer and polyurethane. Then, a protective layer 1 made of a curable resin having a rough surface 33 made of an aggregate of hemispherical convex portions, and a decorative sheet 25 provided with a pattern 2 on a base sheet 5 made of a thermoplastic resin
In the decorative sheet 10 made of a laminate of the above, the rough surface has a rough surface 30 made of an aggregate of hemispherical concave portions (cross sections 31 and planes 32 shown in FIGS. 2B and 2C). A transparent uncured cured resin layer on the mold sheet 3,
After laminating the decorative sheet 25 provided with the pattern 2 on the base sheet 5 made of a thermoplastic resin, the laminate is irradiated with ionizing radiation to cure the curable resin layer, thereby forming a protective layer, and then forming. This is a method for manufacturing a decorative sheet 10 for peeling a sheet.

The thermoplastic resin constituting the sheet for providing the picture of the present invention is polyethylene, polypropylene,
Polyethylene terephthalate, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic ester copolymer, ionomer, ethylene
Saponified vinyl acetate copolymer, polyvinyl butyral,
It is mainly made of polyvinyl chloride or the like. Further, the sheet can be laminated on a flat plate such as a veneer of wood, a plywood of wood, a particle board, a medium density fiber board (MDF) or the like without being deteriorated by ionizing radiation, and can be bent into an arbitrary shape. And it is a stretched or unstretched sheet containing a coloring agent with a colorant having excellent durability as required, and further containing an elastomer as necessary.

The sheet of the thermoplastic resin is subjected to a corona discharge treatment or a primer treatment on the surface to be printed of the sheet (particularly, a polyolefin resin) in order to firmly and stably adhere to a printing ink for forming a picture. Is preferred. The primer can be achieved by applying a small amount of a composition containing isocyanate such as polyester isocyanate, urethane isocyanate or polyisocyanate, or a varnish in which a binder of a printing ink is dissolved in addition to alkyl titanate. In short, a material that serves as a bonding medium between the ink and the sheet is preferable.

The picture may be formed by any of intaglio printing, letterpress printing and stencil printing, and may be either rotary printing or sheet-fed printing. In short, the selection is made in consideration of the selection of the printing ink (binder and solvent), the density of the pattern, the smoothness of the surface to be printed, and the suitability for post-processing. Preferably, gravure printing is preferred, in which there are many types of ink binders and a wide selection range of solvents and the like for producing printing inks is available, which can be processed by winding in accordance with post-processing suitability. In view of the variety of resins and solvents used for the binder, rotary printing, which can process the material for winding by gravure, is a preferred method.

The imprinted sheet having a concavo-convex pattern according to the present invention may be a metal plate such as aluminum or stainless steel, a hard resin plate such as polyethylene terephthalate, polyamide, hard vinyl chloride, polyimide, polysulfone, or polycarbonate, or a stretched or unstretched film. Can be used. Then, a spherical body such as glass beads is made to collide with these sheets by a sandblast method, thereby forming a shaped sheet 3 having a rough surface 30 having a concave hemispherical pattern as shown in FIG. The diameter of the spherical body is 5 to 20 μm, and the size and the distribution density can be changed depending on the gloss desired by the decorative sheet 10. In addition, it is also possible to partially provide a wood-like convex part, a hairline-like convex part, or an abstract pattern.

The protective layer on the surface is provided so that the formed pattern is not damaged by abrasion or the like, and a composition comprising the above-mentioned reaction-curable resin or ionizing radiation-curable resin can be used. Curable resins include aminoalkyd resin, alkyd resin, vinylated alkyd resin, acrylic resin, modified epoxy resin, urethane resin, polyester resin, vinyl chloride / vinyl acetate copolymer, etc.
There are curable resins based on acids and polyisocyanates.

As the ionizing radiation-curable resin forming the protective layer, a urethane acrylate oligomer having an average molecular weight of 1,000 to 4,000 can be preferably used in consideration of flexibility. If necessary, add a curing agent such as a polymerization initiator and a polymerization accelerator in addition to additives, a crosslinking agent, and a lubricant to improve abrasion resistance, and adjust the viscosity according to the construction process. Add a solvent and a viscosity modifier so that

As an additive for improving the scratch resistance of the protective layer, spherical particles may be used in addition to the lubricant. The spherical particles may have a shape close to a sphere such as a sphere or a flattened ellipse sphere. It is only necessary that the surface be surrounded by a smooth curved surface such as. The spherical particles preferably have no protrusions or corners on the particle surface, and are close to a spherical shape without a so-called cutting edge. Spherical particles improve the scratch resistance of the protective layer on the surface as compared with amorphous particles of the same material. In addition, the coating device is not worn, and even after the coating film is hardened, it does not wear other objects in contact with the coating film, and furthermore, the transparency is improved. This is particularly effective when there is no cutting edge. In addition, the present invention exhibits excellent scratch resistance in combination with the hemispherical surface formed on the convex portion according to the present invention. The spherical particles contained in the protective layer on the surface are usually 5 to 30% by weight, preferably 5 to 25% by weight, particularly preferably 5 to 15% by weight.

The method of applying and forming the protective layer on the surface of the present invention includes reverse gravure coating or roll coating, direct coating, flow coating, bar coating, and commercial coating. The protective layer forms a hemispherical convex portion, and the method includes an embossing method by applying heat and pressure to the hemispherical concave surface. That is, after coating and drying the protective layer on the surface dissolved in the solvent to make it non-adhesive, it is heated to 80 to 180 ° C. in an uncured state, and then molded and cooled with a cooled embossing roll having a concave pattern, Curing by heating or ionizing radiation forms a protective layer having a convex surface.

The viscosity of the ionizing radiation-curable composition at the time of coating is determined by the coating method and the coating amount.
~ 3000 centipoise is preferred. The composition can be selected from a solvent-free type containing no volatile solvent and a composition containing a volatile solvent depending on the composition, coating method and process. When coating is difficult due to high viscosity at room temperature in a non-solvent type, the ionizing radiation-curable composition is heated to 40 to 80 ° C. to obtain an appropriate viscosity, for example, 100
The coating may be performed at 0 centipoise or less. And the thickness of the coating film is 3 to 100 μm, preferably 5 to 100 μm.
３０30 μm.

The protective layer of the present invention is provided on a molding sheet and laminated with a decorative sheet. As shown in FIG. The sheet 3 is also provided with a curable resin layer 15,
The cured protective layer 1 may be formed by laminating both curable resin layers. By this method, not only can the scratch resistance be improved, but also the curable resin layers 15 and 16 can be improved.
By combining those having different qualities, a protective layer having higher cost and higher quality can be formed.

In the ionizing radiation-curable resin used in the curable resin layer of the present invention, a prepolymer, an oligomer and / or a monomer having a polymerizable unsaturated bond or an epoxy group in a molecule are appropriately adjusted. Use the composition. Examples of these prepolymers and oligomers include urethane acrylate, polyester acrylate, epoxy acrylate, unsaturated polyester which is a condensate of unsaturated dicarboxylic acid and polyhydric alcohol, epoxy acrylate, and siloxane. For example, there are alkyl acrylate and alkyl methacrylate. (Hereinafter, in this specification,
Acrylates and / or methacrylates are described as (meth) acrylates. ). There are polyester (meth) acrylate, polyether (meth) acrylate, polyol (meth) acrylate, and melamine (meth) acrylate.

The monomers include vinyl benzene monomers such as styrene and α-methylstyrene, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, and methoxyethyl (meth) acrylate. , Butoxyethyl (meth) acrylate and phenyl (meth) acrylate.

Unsaturated carboxylic acids such as N-dimethylaminoethyl (meth) acrylate, N-diethylaminoethyl (meth) acrylate, N-dibenzylaminoethyl (meth) acrylate and N-diethylaminopropyl (meth) acrylate; and amino alcohols And esters.

Unsaturated carboxylic acid amide of (meth) acrylamide, ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, 1,6
There are esters of glycols with unsaturated carboxylic acids such as hexanediol di (meth) acrylate and triethylene glycol di (meth) acrylate.

Dipropylene glycol di (meth) acrylate, ethylene glycol di (meth) acrylate,
There are polyfunctional compounds such as propylene glycol di (meth) acrylate.

When the flexibility of the cured product is required, the monomer is reduced as long as the processability is not hindered, and a monofunctional or bifunctional acrylate monomer is used, and a relatively low crosslinking density is used. Structure. When the heat resistance, hardness, and solvent resistance of the cured product are required, the amount of the monomer may be increased as long as the processability is not impaired, or a trifunctional or higher functional (meth) acrylate-based monomer may be used. A structure having a high crosslinking density can also be obtained by partially using a body.

The average molecular weight obtained by repeating the sequential reaction of the polyester diol and the aliphatic diisocyanate is 3
Those having 0000 to 60,000 are preferable as a material which is highly compatible with the ionizing radiation-curable resin and gives flexibility.

In order to adjust physical properties such as flexibility and surface hardness of the cured product, at least one of the above-mentioned prepolymer or oligomer monomer is made of a resin and / or a thermoplastic resin which is not cured by ionizing radiation. 5 to 30% by weight, preferably 5 to 15% by weight can be added. Resins that do not cure with ionizing radiation include urethane-based resins, cellulose derivatives, polyesters, acrylic resins, polyvinyl butyral, polyvinyl acetate, polycarbonate, polyamides, etc. , Cellulose derivative, polyester, polyvinyl butyral, and the like.

For the resin composition in consideration of flexibility, a urethane acrylate oligomer having a weight average molecular weight of 1,000 to 4,000 is preferable. In addition, a resin which is not cured by ionizing radiation and / or a thermoplastic resin is preferably a urethane resin having a weight average molecular weight of 30,000 to 60,000. These thermoplastic resins are stable in flexibility only by being mixed with the composition of the protective layer. However, when the content is 30% by weight or more, the adhesiveness of the uncured coated surface becomes strong, and when the sheet is wound up, blocking easily occurs, and the cured protective layer also has poor scratch resistance. Since the surface cannot be directly irradiated with ionizing radiation, an electron beam-curable composition is preferable to an ultraviolet-curable composition.

The ionizing radiation applied to the curing of the ionizing radiation-curable resin may be of various types such as Cockloft-Walton type, Bandegraf type, Resonant transformer type, Insulating core transformer type, or linear type, dynamitron type, high frequency type, etc. Use a linear accelerator. Then, an electron beam having an energy of 100 to 1000 keV is cured with an irradiation dose of 0.5 to 3000 Mrad.

The composition of the ionizing radiation-curable resin comprises, as a photopolymerization initiator, acetophenones, benzophenones,
UV radiation by adding a mixture of Michler benzoyl benzoate, α-amyloxime ester, tetramethyl meuram monosulfide, thioxanthones, and / or photosensitizers such as n-butylamine, triethylamine, and tri-n-butylphosphine. Can be cured. A photoinitiator, a photopolymerizable monomer or a photopolymerizable oligomer that generates free radicals using ultraviolet light or visible light having a wavelength of 180 nm or more, or 100
It is composed of a photopolymerizable monomer or a photopolymerizable oligomer that generates free radicals by an electron beam having an energy of KeV to 10 ⁶ KeV.

[0028]

The present invention will be described more specifically below with reference to examples. Example 1 As shown in FIG. 1, a colored elastomer sheet mainly composed of polypropylene and having a thickness of 80 μm (base sheet 5: SB010 manufactured by Mitsubishi Chemical MKV Co., Ltd.)
Was subjected to a corona discharge treatment at an output of 4 KW so that the surface tension became 40 dyne / cm or more. Next, a urethane resin-based primer (W2000 manufactured by Showa Ink Industries, Ltd.) and an ink using a urethane-based resin as a binder (S2000 manufactured by Showa Ink Industries, Ltd.) are used in the same process on the corona discharge treated surface. The decorative sheet 25 provided with the wood grain pattern 2 was prepared. On the other hand, a matting surface 30 formed by sandblasting with a glass bead on a biaxially stretched polyethylene terephthalate film having a thickness of 25 μm using an ionizing radiation-curable resin (protective layer coating material A) having the following composition (a shaping sheet) 3), as shown in FIG. 3, a protective layer 1 made of a non-adhesive and uncured ionizing radiation-curable resin having a thickness of 15 μm dried by a coating unit 51 by a reverse coat and dried by a drying unit 52.
Was provided. And the picture 2 of the above-mentioned decoration sheet 25,
The uncured ionizing radiation-curable resin layer provided on the shaping sheet 3 is laminated in contact with the laminating part 53 at the laminating part 53, and the shaping sheet 3 is irradiated with the electron beam irradiated part 54 under the conditions of 250 KeV, 7 Mrad, and an oxygen concentration of 200 ppm or less. The resin layer was completely cured by irradiating an electron beam from the side. The shaping sheet 3 was peeled off and removed from the protective layer 1 made of the ionizing radiation-curable resin formed as described above to prepare the decorative sheet 10 of Example 1 of the present invention in which the roughened surface 33 was provided. (Composition of paint A for protective layer) ・ 90 parts by weight of urethane acrylate oligomer ・ 10 parts by weight of urethane resin (average molecular weight: 40000) ・ 100 parts by weight of ethyl acetate (solvent)

Example 2 Instead of the sandblasted biaxially stretched polyethylene terephthalate film in Example 1, a sandblasted metal plate 35 (corresponding to the shaping sheet 3) shown in FIG. 4 was used. , FIG.
A curable resin layer 15 was provided using a coating material A for a protective layer in a coating section 51 shown in FIG. Then, as shown in FIG. 4B, the decorative sheet 25 and the laminated portion 53 are laminated, and the rough surface 33 is provided in the same manner as in Example 1 except that the applied voltage of the electron beam is set to 300 KeV. A decorative sheet 10 of Example 2 was created.

Example 3 A plastic film 5 (Mitsubishi Chemical MKV) provided with a wood pattern 2 in the same manner as in Example 1
A pattern 2 of ionizing radiation-curable resin having the following composition (paint B for protective layer) was applied to the pattern 2 of
μm, 175 KeV, 5 Mrad, oxygen concentration 20
It was cured under the condition of 0 ppm or less to form the (curable resin layer 16) shown in FIG. (Protective layer composition of the coating material B) - Urethane acrylate 20 parts Trimethylolpropane triacrylate 20 parts Bisphenol A (EO) ₄ diacrylate 10 parts by weight Bisphenol A (EO) ₂ acrylate 30 parts by weight of ethyl acetate (Solvent) 100 parts by weight However, EO indicates ethylene oxide. Then, as shown in FIG. 2, the same uncured curable resin layer 15 is provided on the same shaping sheet 3 as in Example 1, and the curable resin layer 16 applied to the above-described pattern is laminated. 250 KeV, 7 Mrad, oxygen concentration 200 pp
The protective layer 1 was formed by irradiating an electron beam from the side of the shaping sheet 3 under the condition of m or less to completely cure the ionizing radiation-curable resin, and the shaping sheet 3 was peeled and removed to form a rough surface 33. Example 3 A decorative sheet 10 of Example 3 of the present invention was prepared.

Comparative Example 1 Example 1 as shown in FIG.
On the pattern of the decorative sheet prepared in the above, the protective layer paint A made of the ionizing radiation-curable resin used in Example 1 was applied to a thickness of 15
Coated and dried at μm. Next, at the electron beam irradiation unit, 17
The curable resin layer was cured by irradiating an electron beam from the side of the coating film under the conditions of 5 KV, 5 Mrad, and an oxygen concentration of 200 ppm or less. Then, embossing was performed on the surface of the cured resin layer to form an embossed pattern on the satin finish, thereby producing a decorative sheet of Comparative Example 1.

Comparative Example 2 Example 1 as shown in FIG.
Was applied with a gravure reverse coat to a thickness of 15 μm and dried. Next, in the electron beam irradiation unit,
The coating film was irradiated with an electron beam under the conditions of 175 KeV, 5 Mrad, and an oxygen concentration of 200 ppm or less to cure the ionizing radiation-curable resin layer. Then, embossing was performed on the surface of the cured resin layer, and a decorative sheet of Comparative Example 2 in which a matte pattern was formed was formed. (Composition of protective layer coating C) Urethane acrylate 100 parts by weight Silica (average particle diameter 10 μm) 15 parts by weight Ethyl acetate (solvent) 100 parts by weight

(Comparative Example 3) Irradiation radiation-curable resin used in Comparative Example 2 was replaced with that of Example 3, except that electron beam irradiation conditions were changed, and that the cured resin layer had a matte pattern on its surface. A decorative sheet of Comparative Example 3 was formed in the same manner as in Comparative Example 2.

Table 1 shows the results of the following evaluation of the decorative sheets prepared in Examples and Comparative Examples. [Flexibility] After the sample was left in a thermostat at 25 ° C. for 30 minutes, R
= 0, sharply bent at an angle of 180 ° toward the base sheet,
The change in the appearance of the protective layer at the bent portion on the picture was visually evaluated. (Evaluation Criteria) が な い: No change ×: Clear cracking [Scratch resistance] The protective layer side of the sample was rubbed 10 times with a load of 100 g / cm ² using # 0000 steel wool. Scratching was performed, and the presence or absence of gloss change was visually evaluated. (Evaluation criteria) ○: No change in gloss is observed Δ: A slight change in gloss is observed ×: A change in gloss is apparent [Emboss fastness test] The sample is immersed in a glycerin bath at 120 ° C for 30 seconds. Then, the state of the surface was visually evaluated. (Evaluation Criteria) ：: No change in gloss was observed ×: A change in gloss was clearly observed [Appearance] The surface of the sample was observed with a 20-power loupe to evaluate the appearance of the product. (Evaluation criteria) ○: No cracks observed ×: Cracks observed

[0035]

[Table 1]

[0036]

According to the decorative sheet of the present invention, the surface of the surface protective layer made of a curable resin is formed of an aggregate of hemispherical convex portions. Therefore, the effect of forming a decorative sheet having excellent surface scratch resistance and maintaining the flexibility and surface hardness of a curable resin, particularly an ionizing radiation-curable resin, is exhibited.

[Brief description of the drawings]

FIG. 1A is a schematic sectional view showing the configuration of a decorative sheet of the present invention. (B) It is the cross-sectional schematic diagram which expanded the protective layer of this invention. (C) It is the schematic of the plane which expanded the protective layer of this invention.

FIG. 2 is a schematic sectional view showing the configuration of a decorative sheet of another specification of the present invention.

FIG. 3 is a side view for explaining the method for manufacturing a decorative sheet according to the present invention.

FIG. 4 is a side view for explaining another manufacturing method of the decorative sheet of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protective layer 2 Picture 3 Imprint sheet 5 Base sheet 10 Decorative sheet 15, 16 Curable resin layer 25 Decorative sheet 30 Rough surface of imprint sheet 31 Depression (cross section) of imprint sheet 32 Depression of imprint sheet (plane) 33) Rough surface of decorative sheet 35 Metal plate with rough surface 51 Coating part 52 Drying part 53 Stacking part 54 Electron beam irradiation part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B32B 27/40 B32B 27/40 C08J 7/18 CFF C08J 7/18 CFF // C08L 75:04 F term ( Reference) 4D075 AC26 BB04X BB47Z BB49X CA02 DA04 DA23 DB36 DB43 DB48 EA07 EA41 EB38 EC37 4F073 AA07 AA28 BA28 BB01 CA42 4F100 AK01A AK01B AK07B J11B11A11 EB25A EK25A JK14 JK17 JL01

Claims (3)

[Claims] 1. A laminate comprising a protective layer made of a curable resin having a rough surface and made of an aggregate of hemispherical convex portions, and a decorative sheet provided with a pattern on a base material sheet made of a thermoplastic resin. Makeup sheet. 2. The decorative sheet according to claim 1, wherein the curable resin is an ionizing radiation curable resin comprising a urethane acrylate oligomer or a mixture of a urethane acrylate oligomer and polyurethane. 3. A laminate comprising a protective layer made of a curable resin having a rough surface and made of an aggregate of hemispherical convex parts, and a decorative sheet provided with a pattern on a base material sheet made of a thermoplastic resin. In the decorative sheet, the rough surface is a transparent uncured ionizing radiation-curable resin layer on a shaping sheet having a rough surface composed of an aggregate of hemispherical concave portions, and a base sheet made of a thermoplastic resin. After laminating the decorative sheet with the pattern,
The method for producing a decorative sheet according to claim 1, wherein the curable resin layer is cured by irradiating ionizing radiation in a laminated state, and further, the shaping sheet is peeled off.