JP2022170199A - Method for manufacturing decorative paper, decorative paper, and decorative material - Google Patents

Abstract

To provide a method for manufacturing decorative paper that is used in a surface material for applications of furniture and fitting, which can easily exhibit a design of an embossment plate.SOLUTION: A method for manufacturing decorative paper includes the steps of: forming a pattern layer 40 having an uneven patter on one surface of a base paper layer 30; forming a top coat layer 50 on the surface of the pattern layer 40; and performing embossment toward the pattern layer 40 from the surface of the top coat layer 50 using an embossment plate, wherein in the embossment step, a surface temperature of the top coat layer 50 is 50°C or higher and a printing pressure of the embossment plate is 6 kgf/cm2 or more. The base paper layer 30 may include thin paper having a basis weight of 20 g/m2 or more and 100 g/m2 or less, the top coat layer 50 may contain an ultraviolet curable resin or an electron beam curable resin, and in the top coat layer 50, a recess or a projection may be selectively arranged corresponding to the recess or the projection of the uneven pattern in a region overlapping the uneven layer of the pattern layer 40 in top view.SELECTED DRAWING: Figure 1

Description

INDUSTRIAL APPLICABILITY The present invention is used, for example, as a surface material for furniture and fittings, and relates to a method for producing decorative paper, decorative paper, and decorative material, and facilitates expression of the design of the embossing plate.

2. Description of the Related Art Conventionally, a desired pattern such as a wood grain pattern is generally applied to a decorative material for use in interior and exterior decoration of buildings, fittings, furniture, and the like. In addition to simply expressing wood grain patterns and the like two-dimensionally, decorative materials are also used that three-dimensionally express irregularities on the surface of natural wood such as conduits.
As a method of expressing three-dimensional unevenness on the surface of the decorative material together with a planar wood grain pattern, for example, instead of actually forming the uneven shape to be expressed on the surface of the decorative material, it is expressed as concave and convex parts. There is also a method of visually expressing a three-dimensional effect of unevenness by making use of the illusion of the human eye by varying the glossiness of the surface of the desired area. That is, a three-dimensional effect is expressed by recognizing a relatively glossy portion as a convex portion and a relatively low gloss portion as a concave portion (see, for example, Patent Document 1).
Also, a transfer foil for in-mold molding using an ultraviolet curable resin with excellent after-curing properties is known (see, for example, paragraph [0009] and FIG. 1 of Patent Document 2).

JP-A-2000-43223 JP 2015-85589 A

In the method of providing a three-dimensional effect by providing unevenness, it is necessary to provide two layers of resin with different glossiness, and the low-gloss resin contains silica as a matting agent. Therefore, in the low-gloss design portion, a whitening phenomenon occurs due to total reflection of silica, and deterioration of scratch resistance occurs due to lack of silica due to rubbing or the like.
In addition, with conventional decorative materials, the expression of the design of the embossed plate may be weak.
Accordingly, an object of the present invention is to facilitate the expression of a design by specifying the range of the surface temperature of the topcoat layer and the printing pressure of the embossing plate during embossing molding.

A method for producing a decorative paper according to an aspect of the present invention includes the steps of forming a patterned layer having an uneven pattern on one surface of a base paper layer, forming a topcoat layer on the surface of the patterned layer,
and a step of embossing from the surface of the topcoat layer toward the picture pattern layer using a embossing plate, and in the embossing step, the surface temperature of the topcoat layer is set to 50 ° C. or higher. and the printing pressure of the embossing plate is set to 6 kgf/cm ² or more.

Further, in the method for manufacturing decorative paper according to one aspect of the present invention, the base paper layer includes thin paper having a basis weight of 20 g/m ² or more and 100 g/m ² or less.
A method for manufacturing a decorative paper according to an aspect of the present invention is characterized in that the topcoat layer contains an ultraviolet curable resin or an electron beam curable resin.
In the method for producing a decorative paper according to one aspect of the present invention, in the top coat layer, in a top view, in a region where the uneven pattern of the picture pattern layer overlaps, , concave portions or convex portions are selectively arranged.
In the method for manufacturing a decorative paper according to an aspect of the present invention, the embossing plate has a maximum difference in height between convex portions and concave portions of 3% to 200% of the expected total thickness of the decorative paper after manufacture. It is characterized by

A decorative paper according to an aspect of the present invention comprises a base paper layer, a picture pattern layer laminated on one side of the base paper layer and containing an uneven pattern, and a topcoat layer laminated on the picture pattern layer. 3. The surface temperature of the top coat layer during the embossing molding is 50° C. or higher, and the printing pressure of the embossing plate during the embossing molding is 6 kgf/cm ² or higher.
A decorative material according to an aspect of the present invention is characterized by comprising the decorative paper and a base material laminated on the other surface of the base paper layer.

According to the present invention, the design of the embossing plate can be easily expressed.

1 is a cross-sectional view showing an example of a cosmetic material according to one embodiment of the present invention; FIG.

(embodiment)
An embodiment of the present invention will be described with reference to the drawings.
Here, the drawings are schematic, and the relationship between the thickness and the planar dimension, the ratio of the thickness of each layer, and the like are different from the actual ones. Further, the embodiments shown below are examples of configurations for embodying the technical idea of the present invention. It does not specify anything. Various modifications can be made to the technical idea of the present invention within the technical scope defined by the claims.

(Decorative paper 10)
In FIG. 1, 10 is a decorative paper, and the decorative paper 10 is used, for example, as a surface material for furniture and fittings.
As shown in the cross-sectional view of FIG. 1, the decorative paper 10 comprises (1) a base paper layer 30, (2) a pattern layer 40, and (3) a topcoat layer 50, which are laminated in this order.
Note that the above (1) to (3) will be described later.
(Cosmetic material 20)
To the decorative paper 10, the decorative material 20 can be obtained by bonding the base material 21 for the decorative material to the surface of the base paper layer 30 opposite to the picture pattern layer 40 with an adhesive, for example.
Note that the base material 21 will be described later.
(Base paper layer 30)
The base paper layer 30 serves as a support for the decorative paper 10 and contains thin paper with a basis weight of 20 g/m ² or more and 100 g/m ² or less.
The basis weight is, for example, 50 g/m ² .
As the thin paper, for example, glassine paper, parchment paper, medicine packaging paper, etc. can be applied.

(Pattern layer 40)
The pattern layer 40 is printed on one side of the base paper layer 30, for example, the surface of thin paper, and includes an uneven pattern.
The pattern layer 40 is roughly divided into (1) a base pattern layer 41 printed on the surface of thin paper and (2) a pattern printed layer 42 printed on the surface of the base pattern layer 41 .
The base pattern layer 41 is composed of a one-color colored solid layer for both base coloration and concealability, using, for example, nitrocellulose-based gravure printing ink on the surface of thin paper.
The pattern printed layer 42 is formed by sequentially printing, for example, a three-color wood grain layer excluding the vessel pattern and a one-color vessel pattern layer synchronized with the wood grain pattern layer on the surface of the colored solid layer.
Here, the "concavo-convex pattern" is composed of a wood grain pattern layer and a vessel pattern layer.

(Constituent material of pattern layer 40)
The constituent material of the pattern layer 40 is not particularly limited, but is generally printing ink obtained by dissolving or dispersing a coloring agent such as a dye or pigment in a suitable solvent together with a suitable binder resin. Or a coating material is used.
Examples of colorants include inorganic pigments such as carbon black, titanium white, zinc white, red iron oxide, chrome, iron blue, cadmium red, azo pigments, lake pigments, anthraquinone pigments, phthalocyanine pigments, isoindolinone pigments, and dioxazine pigments. or a mixture of two or more of these can be used.

(Binder resin)
Examples of binder resins include acrylic resins, styrene resins, polyester resins, urethane resins, polyvinyl resins, alkyd resins, petroleum resins, ketone resins, epoxy resins, melamine resins, and fluorine resins. Various synthetic resins such as resins, silicone-based resins, cellulose-based resins, and rubber-based resins, or mixtures and copolymers thereof can be used.

As the solvent, for example, toluene, xylene, cyclohexane, ethyl acetate, butyl acetate, methyl alcohol, ethyl alcohol, isopropyl alcohol, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, water, etc., or a mixture thereof can be used. can be done.
In addition, if necessary, various additives such as extender pigments, plasticizers, dispersants, surfactants, tackifiers, adhesion aids, desiccants, curing agents, curing accelerators or curing retarders are used as appropriate. be.

The pattern layer 40 needs to include at least the pattern printed layer 42 in the areas corresponding to the concave or convex forming areas 60 .
On the other hand, although the base pattern layer 41 is not essential, it is visible as a color pattern independent of the color pattern in the area where the pattern printed layer 42 is formed on the decorative paper 1 excluding the area where the pattern printed layer 42 is formed. It can be provided for the purpose of granting a design to be applied.
For example, in the case of a wood grain pattern, as is well known, it is common to separate and print a solid base, a wood grain pattern, a vessel pattern, etc. Among these, the solid base and the wood grain pattern are printed in the decorative paper 1 of the present invention. is provided as the base pattern layer 41 and the conduit pattern is provided as the pattern printed layer 42 .

In the present invention, the picture pattern layer 40 is not limited to a wood grain pattern, and can be appropriately applied to a stone grain pattern, an abstract pattern, or the like.
In FIG. 1, the pattern printed layer 42 is described as being provided on the surface of the base pattern layer 41, but this does not necessarily define the vertical relationship between the two, and the two are on the same plane. It may be provided as a continuous pattern on the top, the vertical relationship may be reversed, and a transparent layer (which may be a transparent base material) or the like may be interposed between the two. .
Also, all or part of the pattern printed layer 42 may be integrated with the base paper layer 3 by mixing or permeating a coloring agent into the base paper layer 3 .
In short, when observed from the surface side of the decorative paper 1, it is sufficient that the pattern printed layer 42 formed in the concave or convex forming region 60 and the base pattern layer 41 can be distinguished by color. .

(Method of Forming Pattern Layer 40)
The pattern layer 40 is most generally formed by an appropriate printing method such as gravure printing, offset printing, screen printing, electrostatic printing, or inkjet printing.
The forming method is not limited to this, and for example, the above-described solid undercoat may be formed by a coating method such as a roll coating method, a knife coating method, or a die coating method. Other patterns can also be formed by any conventionally known image forming method.

(Top coat layer 50)
The topcoat layer 50 is laminated on the surface of the picture pattern layer 40, that is, on the surface of the pattern printed layer 42, and has transparency that allows at least the picture pattern layer 40 to be seen through.
The top coat layer 50 contains an ultraviolet curable resin or an electron beam curable resin.
As the ultraviolet curable resin or electron beam curable resin, for example, a one-liquid curable ultraviolet curable resin that has tack-free properties only by heat drying is applied at a coating amount of 10 g/m ² after drying. .
The top coat layer 50 is formed on the entire surface of the pattern layer 40 opposite to the base paper layer 30 .

(Concave or convex forming region 60)
A convex shape or a concave shape is selectively formed by embossing in a region of the top coat layer 50 corresponding to the concave or convex forming region 60 in top view.
Specifically, in the region corresponding to the concave or convex forming region 60 of the topcoat layer 50, a concave shape is formed in the region where the pattern printed layer 42 is formed in a top view, and the pattern printed layer 42 is formed. A convex shape is formed in the region where the groove is not formed.
Glossiness and luster are expressed by providing an uneven shape in the topcoat layer 50 in accordance with the "unevenness pattern" of the picture pattern layer 40, and the unevenness is expressed in the decorative paper 10 by means of the glossiness and luster. I'm trying

(embossed molding)
The embossing is performed using an embossing plate, for example, an embossing plate.
During embossing, the surface temperature of the topcoat layer 50 is set at 50° C. or higher, and the printing pressure of the embossing plate at the time of embossing is set at 6 kgf/cm ² or higher.
Specifically, the surface temperature is preferably 50°C or higher and 130°C or lower. Also, the printing pressure is preferably 6 kgf/cm ² or more and 23 kgf/cm ² or less.
If the surface temperature of the top coat layer 50 is lower than 50° C., the design of the embossing plate is difficult to develop, and the design feeling is poor.
Also, if the printing pressure of the embossing plate is weaker than 6 kgf/cm ² , similarly, the design of the embossing plate will be difficult to develop, resulting in poor design feeling.

(embossed version)
The embossing is performed by adjusting the concave shape of the topcoat layer 5 to be formed in the concave portion or the convex forming region 60 and the maximum height difference between the convex portion and the concave portion for forming the convex portion shape (hereinafter simply referred to as "maximum height difference"). ) is set to be in the range of 3% or more and 200% or less of the total thickness of the finally formed decorative paper 1 (hereinafter also simply referred to as "total thickness").
If the maximum difference in height is less than 3%, the unevenness formed on the topcoat layer 5 by embossing is too shallow, and the design does not appear.
When the maximum height difference is greater than 200%, a laminate of the base paper layer 3, the picture pattern layer 40, and the resin layer made of an ultraviolet curable resin or an electron beam curable resin, which becomes the topcoat layer 50, is formed during embossing. It may break.
In FIG. 1, the side surfaces of the concave and convex shapes of the topcoat layer 5 are changed stepwise, but the shape is not limited to this, and may be changed continuously.

The layer thickness and surface roughness of the topcoat layer 50 can be selectively adjusted by gradually changing the side surfaces of the concave and convex shapes of the topcoat layer 05, and the surface gloss value and touch feeling can be adjusted. Gradation expression can be given to to reproduce the texture of more natural wood grain and stone grain.
Further, the projections or recesses of the top coat layer 50 do not need to be exactly opposed to the recesses or projections of the pattern printed layer 42, and may be slightly shifted.
By positively shifting both, it is possible to appropriately adjust the apparent unevenness.
In addition, by changing the direction and distance of deviation between the two contours depending on the position in the concave or convex forming region 60, the apparent concave and convex feeling can be changed depending on the position in the concave or convex forming region 60. can also

(Base material 21)
Various materials can be used for the base material 21 depending on the intended use.
Specifically, for example, papers such as thin paper, titanium paper, resin-impregnated paper, flame-retardant paper, inorganic paper, woven fabrics or non-woven fabrics made of natural fibers or synthetic fibers, polyolefin-based resins, polyester-based resins, acrylic-based Resins, styrene resins, polyamide resins, cellulose resins, polycarbonate resins, polyvinyl chloride resins, polyvinylidene chloride resins, synthetic resin base materials such as fluorine resins, wood veneers, veneers, plywood, laminated lumber, Wood base materials such as particle board and medium density fiberboard; inorganic base materials such as gypsum board, cement board, calcium silicate board and ceramic board; metal base materials such as iron, copper, aluminum and stainless steel; Any conventionally known materials such as composites, laminates, etc. can be used, and the shape thereof is not limited at all, for example, film-like, sheet-like, plate-like, deformed molding, and the like.

(Manufacturing method of decorative paper 10)
Next, an example of a method for manufacturing the decorative paper 10 will be described below.
The first step is to form a picture pattern layer 40 having an uneven pattern on one surface of the base paper layer 30 .
Specifically, for example, on the surface of the thin paper having a basis weight of 50 g/m ² contained in the base paper layer 30, a nitrocellulose-based gravure printing ink is used to apply a one-color solid color that serves both as a base color and a concealing property. A pattern pattern layer 40 laminated on one side of a base paper layer 30 is sequentially printed by printing a layer, a three-color wood grain pattern layer excluding the vessel pattern, and a one-color vessel pattern layer synchronized with the wood grain pattern layer. obtain.

The second step is to form the top coat layer 50 on the surface of the pattern layer 40 .
Specifically, for example, a one-liquid curable UV curable resin having a tack-free property only by heat drying is applied at a coating amount of 10 g/m ² after drying, and laminated on the surface of the pattern layer 40. A topcoat layer 50 is obtained.
Thirdly, using an embossing plate on the surface of the top coat layer 50, recesses or protrusions corresponding to the recesses or protrusions of the uneven pattern are formed in the regions overlapping the uneven pattern of the picture pattern layer 40 when viewed from above. selectively embossing the

Specifically, for example, an embossing plate having a wood grain texture that is in sync with the duct pattern layer and having a maximum height difference between the convex portion and the concave portion of 200% of the total sheet thickness is applied with a printing pressure of 6 kgf/cm ² and the top coat layer 50 is formed. Embossing is performed at a surface temperature of 50° C., and finally UV irradiation is performed using a metal halide lamp to cure the decorative paper 10 .

In the above printing, a 7-color gravure printing machine for manufacturing decorative sheets was used, the printing speed was 50 m/min, and the drying conditions were 100°C for each color. In the after-drying zone, the temperature is set to 120° C. and 180° C. in order to dry the top coat agent sufficiently, and then embossing is performed with an embossing plate, and finally ultraviolet irradiation is performed.
Moreover, when manufacturing the decorative material 20, the decorative paper 10 prepared by the above procedure may be attached to the base material 21 with an adhesive.

(First characteristic point of the embodiment)
The first characteristic point of the manufacturing method of the decorative paper 10 according to the embodiment is the step of forming the picture pattern layer 40 having an uneven pattern on one surface of the base paper layer 30, and the step of forming a top coat on the surface of the picture pattern layer 40. A step of forming the layer 50, and a step of embossing from the surface of the topcoat layer 50 toward the picture pattern layer 40 using a embossing plate. The surface temperature is set to 50° C. or higher, and the printing pressure of the embossing plate is set to 6 kgf/cm ² or higher.

(Effect of first feature point)
According to the first characteristic point, the design of the embossing plate can be easily expressed.
If the surface temperature of the top coat layer 50 is lower than 50° C., the design of the embossing plate is difficult to develop, and the design feeling is poor.
Also, if the printing pressure of the embossing plate is weaker than 6 kgf/cm ² , similarly, the design of the embossing plate will be difficult to develop, resulting in poor design feeling.

(Second characteristic point of the embodiment)
A second characteristic point of the manufacturing method of the decorative paper 10 according to the embodiment is that the base paper layer 30 includes thin paper having a basis weight of 20 g/m ² or more and 100 g/m ² or less.
(Effect of second feature point)
According to the second feature, thin paper has excellent thermal dimensional stability when dry and excellent positional registration in gravure printing and the like.
Therefore, by using a thin paper as the base paper layer 30, it is possible to easily perform positioning at the time of embossing.
At this time, thin paper having a basis weight of 20 g/m ² or more and 100 g/m ² or less is used as the base paper layer 30 .
Therefore, it is possible to obtain a printed matter with excellent design in gravure printing or the like without breaking the thin paper.
If the basis weight of the thin paper as the base paper layer 30 is less than 20 g/m ² , the paper may break during printing.
On the other hand, if the basis weight of the thin paper as the base paper layer 30 is more than 100 g/m ² , pressure may be lost when the impression roll is used to press the thin paper against the gravure cylinder, resulting in poor print quality.

(Third Characteristic Point of Embodiment)
A third characteristic point of the manufacturing method of the decorative paper 10 according to the embodiment is that the topcoat layer 50 contains an ultraviolet curable resin or an electron beam curable resin.
(Effect of third feature point)
According to the third characteristic point, the topcoat layer 50 can be cured by irradiating ultraviolet rays or electron beams after the embossing process.
In other words, during the embossing process, the resin layer made of the ultraviolet curable resin or the electron beam curable resin is not irradiated with ultraviolet rays or electron beams, so it is not cured, and the tack-free property is improved by performing heat drying. It is expressed.
Therefore, the uneven shape of the embossing plate can be accurately transferred to the resin layer. After the embossing step, the resin layer is cured by being irradiated with ultraviolet rays or electron beams according to the type of the resin layer.
In addition, the top coat layer 50 is formed by applying an ultraviolet curable resin or an electron beam curable resin having tack-free property by heat drying, heat-drying the applied resin, developing tack-free property by heat drying, and semi-curing. Since it can be produced by performing a embossing process on the resin in a pressed state and curing it by irradiating it with ultraviolet rays or electron beams, it can be produced in-line.

(Fourth characteristic point of the embodiment)
A fourth characteristic point of the manufacturing method of the decorative paper 10 according to the embodiment is that the top coat layer 50 has, in a top view, a region where the uneven pattern of the picture pattern layer 40 overlaps, and a concave or convex portion of the uneven pattern. Correspondingly, recesses or protrusions are selectively arranged.
(Effect of fourth feature point)
According to the fourth characteristic point, the convex or concave shape formed in the top coat layer 50 is synchronized with the concave and convex shape of the picture pattern layer 40, and a feeling of unevenness can be expressed.

(Fifth characteristic point of the embodiment)
A fifth characteristic point of the manufacturing method of the decorative paper 10 according to the embodiment is that the embossing plate has a maximum height difference between the convex portion and the concave portion of 3% to 3% of the expected total thickness of the decorative paper 10 after production. 200%.
(Effect of fifth feature point)
According to the fifth characteristic point, the concave or convex shape formed in the top coat layer 50 and the concave and convex shape of the pattern printed layer 42 are synchronized, and it is possible to give a person a visual sense of unevenness. can.
In addition, since the height of the convex portion and the depth of the concave portion of the embossing plate are limited, in the embossing process, the base paper layer 30, the picture pattern layer 40, the ultraviolet curable resin or the electron beam curable resin When forming an uneven shape using an embossing plate on a laminate with a resin layer consisting of can do.

(Sixth characteristic point of the embodiment)
The sixth characteristic point of the decorative paper 10 according to the embodiment is the base paper layer 30, the pattern layer 40 laminated on one side of the base paper layer 30, the pattern layer 40 including an uneven pattern, and the pattern pattern layer 40 laminated The surface temperature of the top coat layer 50 during embossing molding is 50° C. or higher, and the printing pressure of the embossing plate during embossing molding is 6 kgf/cm ² or higher.
(Sixth effect of the embodiment)
According to the sixth characteristic point, it is possible to provide the decorative paper 10 that facilitates the expression of the design of the embossed plate.
If the surface temperature of the top coat layer 50 is lower than 50° C., the design of the embossing plate is difficult to develop, and the design feeling is poor.
Also, if the printing pressure of the embossing plate is weaker than 6 kgf/cm ² , similarly, the design of the embossing plate will be difficult to develop, resulting in poor design feeling.

(Seventh characteristic point of the embodiment)
A seventh feature of the decorative material 20 according to the embodiment is the decorative paper 10 and the base material 21 laminated on the other surface of the base paper layer 30 .
(Seventh effect of the embodiment)
According to the seventh characteristic point, it is possible to provide the decorative material 20 that facilitates the expression of the design of the embossed plate.

Examples 1 to 3, Comparative Examples 1 and 2 of the decorative sheet according to the present invention are described below. The present invention is not limited to Examples 1 to 3 below.
(Example 1)
In Example 1, first, a nitrocellulose-based gravure printing ink was applied to the surface of thin paper having a basis weight of 50 g/m ² contained in the base paper layer 30 to apply a single color that serves as both a base color and a concealing property. A colored solid layer, a three-color wood grain pattern layer excluding the conduit pattern, and a one-color conduit pattern layer synchronized with the wood grain pattern layer are sequentially printed, and the picture pattern is laminated on one side of the base paper layer 30. A layer 40 was obtained.

Secondly, a one-liquid curable ultraviolet curable resin that is tack-free only by heat drying is applied at a coating amount of 10 g/m ² after drying, and a top coat is laminated on the surface of the picture pattern layer 40 . Layer 50 was obtained.
Third, using an embossing plate having a wood grain texture that is in sync with the duct pattern layer and having a maximum height difference between the protrusions and recesses of 200% of the total thickness of the sheet, a printing pressure of 6 kgf/cm ² and a surface temperature of the topcoat layer 50 The decorative paper 10 of Example 1 was obtained by performing embossing at a temperature of 50° C. and finally curing by irradiating ultraviolet rays with a metal halide lamp.

In the above printing, a 7-color gravure printing machine for manufacturing decorative sheets was used, the printing speed was 50 m/min, and the drying conditions were 100°C for each color. In the after-drying zone, the topcoat agent was sufficiently dried by setting the temperature in two steps of 120 ° C. and 180 ° C. in order, then embossing was performed with an embossing plate, and finally UV irradiation was performed. .
The decorative paper 10 obtained as described above has an excellent design property, having a rugged feeling of the conduit grooves similar to those of natural conduits due to the gloss gradation of the outline of the conduit pattern.
Moreover, problems such as clogging of the plate during printing and blocking or slipping due to poor drying did not occur, and production was possible with good workability.

(Example 2)
Example 2 is the same as Example 1, except that the surface temperature of the topcoat layer 50 during embossing is 100° C., and decorative paper 10 of Example 2 is obtained.
(Example 3)
Example 3 is the same as Example 1 except that the surface temperature of the topcoat layer 50 during embossing is 100° C. and the printing pressure of the embossing plate during embossing is 7 kgf/cm ² . 3 decorative paper 10 was obtained.

(Comparative example 1)
Comparative Example 1 is the same as Example 1 except that the surface temperature of the topcoat layer 50 during embossing is 30° C. and the printing pressure of the embossing plate during embossing is 23 kgf/cm ² . A decorative paper 10 of No. 1 was obtained.
(Comparative example 2)
Comparative Example 2 is the same as Example 1, except that the surface temperature of the topcoat layer 50 during embossing is 30° C. and the printing pressure of the embossing plate during embossing is 2 kgf/cm ² . No. 2 decorative paper 10 was obtained.

(Evaluation method and evaluation criteria)
The decorative paper 10 described in Examples and Comparative Examples was evaluated for design feeling by sensory evaluation.
The sense of design was evaluated by a sensory test. Evaluation was performed by 10 examiners.
The evaluation criteria are "x" for "0", "△" for "1 to 6", "○" for "7 to 9", and "10" for "10". It was set as "◎". "○" and "⊚" were set as "passed", and "△" and "×" were set as "failed".
The scratch resistance was not evaluated, but the opinions of the testers were sought.
(Evaluation results)
The results are shown in Table 1 below.

(Examples 1 to 3, Comparative Examples 1 and 2)
Among Examples 1 to 3 and Comparative Examples 1 and 2, Examples 1 to 3 were all "acceptable" in terms of "design feeling".
On the other hand, in Comparative Examples 1 and 2, all of the "design feeling" were "failed".
As for the scratch resistance, except for Comparative Example 1, the answer was "no change". As for Comparative Example 1, the answer was "gloss change".

(Comparative example 1)
In Comparative Example 1, the surface temperature is 30° C., and it can be assumed that the cause is the low surface temperature.
“Δ” in the “design feeling” of Comparative Example 1 means that the degree of “gloss change” is weak.
On the other hand, in the case of "A" in "design feeling", that is, "acceptable", "gloss change" is clear, and the design is clearly expressed. Compared to Examples 1 to 3, Comparative Example 1 has a weaker "gloss change" and the design is difficult to see.
Therefore, it can be inferred that in Examples 1 to 3, a clear design feeling was obtained by setting the surface temperature to 50° C. or higher.
(Comparative example 2)
In Comparative Example 2, the surface temperature is 30° C., and it can be assumed that the cause is the low surface temperature.

REFERENCE SIGNS LIST 10 Decorative paper 20 Decorative material 21 Base material 30 Base paper layer 40 Pattern pattern layer 41 Underlying pattern layer 42 Pattern printed layer 50 Top coat layer 60 Concave or convex forming region

Claims (7)

A step of forming a picture pattern layer having an uneven pattern on one surface of the base paper layer;
forming a topcoat layer on the surface of the pattern layer;
a step of embossing using a embossing plate from the surface of the top coat layer toward the picture pattern layer,
A method for producing decorative paper, wherein in the step of embossing, the surface temperature of the top coat layer is set to 50° C. or higher, and the printing pressure of the embossing plate is set to 6 kgf/cm ² or higher. 2. The method for producing decorative paper according to claim 1, wherein the base paper layer includes thin paper having a basis weight of 20 g/m< ² > or more and 100 g/m< ² > or less. 3. The method of manufacturing decorative paper according to claim 1, wherein the top coat layer contains an ultraviolet curable resin or an electron beam curable resin. In the top coat layer, concave portions or convex portions are selectively arranged corresponding to the concave portions or convex portions of the concave and convex pattern in regions where the concave and convex patterns of the picture pattern layer overlap when viewed from above. The method for manufacturing the decorative paper according to any one of claims 1 to 3, characterized by: 5. The embossing plate according to any one of claims 1 to 4, wherein the maximum difference in height between the protrusions and recesses is 3% to 200% of the expected total thickness of the decorative paper after manufacturing. A method for manufacturing the decorative paper according to the above item. A base paper layer, a picture pattern layer containing an uneven pattern laminated on one side of the base paper layer, and a top coat layer laminated on the picture pattern layer,
A decorative paper, wherein the surface temperature of the top coat layer during embossing molding is 50°C or higher, and the printing pressure of the embossing plate during embossing molding is 6 kgf/cm ² or higher. The decorative paper according to claim 6;
and a base material laminated on the other surface of the base paper layer.

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