JP2006150975A - Decorative sheet and manufacturing method of decorative sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a panel plate keeping texture of Japanese paper, causing neither dirt nor wrinkle, showing excellent appearance and made at a low cost, to provide its manufacturing method, a decorative sheet constructing the panel plate, and its manufacturing method. <P>SOLUTION: The decorative sheet 5 is accomplished by forming an adhesive layer 11 of a hot-melt resin on one surface of a Japanese paper layer 7 and forming a coat layer 9 containing an acrylic resin on the opposite surface. The panel plate 1 is accomplished by melting the upper and lower adhesive layers 11 at the same time, contacting the core material layer 3 and the adhesive layer 11, and jointing the decorative sheet 5 to the core material layer 3 by spreading the adhesive layer 11 so that the adhesive layer 11 faces the core material layer 3, and cooling them. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a panel plate used for, for example, a partition material, a heat insulating shoji material, an illumination louver, a manufacturing method thereof, a decorative sheet constituting the panel plate, and a manufacturing method thereof.

  Conventionally, a panel plate in which Japanese paper is pasted on the surface of a core material made of resin or the like has been used as a partition material, a heat insulating shoji material, an illumination louver, and the like (see, for example, Patent Document 1).

In this panel plate, first, Japanese paper is attached to the surface of the core material with an adhesive or the like, and then a coating agent made of fluororesin or acrylic resin is applied to the surface of the Japanese paper to prevent contamination. Manufactured.
JP 2002-21440 (paragraph numbers 0025 to 0032, FIG. 2)

  However, with the panel plate described above, it is difficult to produce a plate-like shape. To produce a panel plate, if the Japanese paper alone is first coated and then attached to the core, the coating agent will soak into the Japanese paper more than necessary. As a result, the texture of the Japanese paper was lost, and it was seen as a resin panel plate.

In addition, when the coating agent is thin Japanese paper (10-30 g / m ² ), it may reach the back side of the Japanese paper. When such a Japanese paper is sent using a roll, the coating agent adheres to the roll. In some cases, the panel plate may be defective.

  Further, when the panel plate is manufactured by a method in which Japanese paper is pasted on the core material and then a coating agent is applied to the Japanese paper, there is a problem that dirt is easily attached to the Japanese paper. In other words, in this manufacturing method, at the stage of attaching the Japanese paper to the core material, the Japanese paper is not yet coated and is in a state of being easily soiled. there were. As a result, there is a problem that the manufacturing yield of the panel plate is reduced and the manufacturing cost is increased.

  In addition, when the surface of the core material is uneven, there is a problem that when Japanese paper is applied to the surface of the core material, wrinkles are likely to occur on the Japanese paper, resulting in deterioration of the appearance of the panel plate. It was.

  The present invention has been made in view of the above points, and maintains the texture of Japanese paper, does not produce dirt and wrinkles, has an excellent appearance, has a low manufacturing cost, its manufacturing method, a decorative sheet constituting the panel plate, And a manufacturing method thereof.

(1) The invention of claim 1
Ri consists paper, the weight per unit area on one side of Japanese paper layer in the range of 15 to 30 g / m ^2, the thickness of the adhesive layer made of the hot-melt resin is formed to be in the range of 10~35μm After the adhesive layer forming step and the adhesive layer forming step, the one side of the Japanese paper layer is brought into contact with a roll, and the one of the Japanese paper layers is fed to the Japanese paper layer while being fed using the roll . A coating layer forming step of forming a coating layer containing an acrylic resin on the side opposite to the side so that the surface density is in a range of 3.0 to 5.0 g / m ^2. The manufacturing method is as a gist.

In the decorative sheet produced in the present invention, the coat layer contains an acrylic resin, and this acrylic resin has an adhesive layer formed on the back side of the Japanese paper layer, so that there is little soaking into the Japanese paper layer. Therefore, in the decorative sheet produced in the present invention, the coating layer does not penetrate deeply into the Japanese paper layer, and the texture of the decorative sheet does not become like a resin sheet, and the texture of the Japanese paper can be maintained.

Moreover, since the decorative sheet manufactured by this invention is provided with the coat layer, the surface in which a coat layer exists does not adhere easily. Therefore, for example, when the decorative sheet manufactured in the present invention is bonded to a core layer made of a resin or the like to manufacture a panel plate, the side of the coating layer of the decorative sheet is not soiled.

Furthermore, the decorative sheet manufactured in the present invention includes a coat layer on one side and an adhesive layer on the opposite side. Therefore, for example, even when the coat layer is made of a hard and fragile material, it is difficult for the decorative sheet to be torn or cut by having the adhesive layer.

Moreover, since the decorative sheet manufactured by this invention is equipped with the coating layer and the contact bonding layer, it has moderate rigidity, for example, it is hard to produce a wrinkle compared with the decorative sheet of only Japanese paper. Therefore, the decorative sheet manufactured by the present invention can be attached to the core material layer without generating wrinkles, for example, and can produce a panel plate that has no wrinkles and is excellent in appearance.

In addition, the decorative sheet produced in the present invention has an adhesive layer made of a hot melt resin. For example, the decorative layer is made to adhere to the core material layer while heating the adhesive layer side, and easily and reliably adhere to the core material layer. Can do.
In the method for producing a decorative sheet of the present invention, for example, an adhesive layer is first formed on one side of the Japanese paper layer, and then a coating layer containing acrylic resin is formed on the opposite side of the Japanese paper layer. At the time of forming the layer, the adhesive layer has already been formed.
Therefore, in the present invention, the coating layer applied to one side of the Japanese paper layer does not ooze out to the opposite side of the Japanese paper layer due to the adhesive layer. That is, the decorative sheet manufactured by the present invention does not adhere acrylic resin or the like to the surface opposite to the coat layer.
For this reason, for example, in the process of manufacturing a decorative sheet, when the decorative sheet is sent using a roll, even if the surface opposite to the coat layer of the decorative sheet is in contact with the roll, acrylic resin or the like adheres to the roll. There is no end to it.
As a result, the decorative sheet manufactured according to the present invention can prevent troubles caused by adhesion of acrylic resin or the like to the roll.

For example, the decorative sheet manufactured in the present invention is made into a roll as indicated by reference numeral 5 in FIG. 3, and the roll-like decorative sheet is spread from the outside while being heated and bonded on the core material layer. Thus, a panel plate can be manufactured. By this method, the adhesion between the decorative sheet and the core material layer is high throughout, and the decorative sheet is free from wrinkles and the like, and a panel plate excellent in appearance can be manufactured.

-As a hot-melt resin which comprises the said contact bonding layer, a polyethylene resin and other resin are mentioned, for example.
The thickness of the adhesive layer is, for example, 10 to 35 μm. If it is 10 μm or less, the adhesive force may not be sufficient. If it is 35 μm or more, the production cost may increase, or the processability of the decorative sheet may decrease.

  -The said coating layer says resin which has an acrylic resin as a main component and contains a filler and an additive (for example, a ultraviolet absorber, a light-diffusion agent, a whitening agent etc.), for example. This acrylic resin is used, for example, in a state dissolved in a solvent (for example, a solvent containing MEK as a main component), and the composition thereof is as follows, for example.

Acrylic resin: 38-40% by weight
Filler: 0.1-0.2% by weight
Additive: 0.3-0.5% by weight
Solvent: 60-62% by weight
-The surface density of the said coating layer is 3.0-5.0 g / m < ² >, for example. If it is 3.0 g / m ² or less, the antifouling property may not be sufficient. If it is 5.0 g / m ² or more, the appearance of Japanese paper may decrease in appearance.

Further, the coating layer can be further improved in antifouling property and water repellency by being filled with a small amount of fluororesin.
In the adhesive layer forming step, for example, the adhesive layer is formed by a method in which hot melt resin pellets are heated and melted and applied to the back surface of the Japanese paper layer.
In the coat layer forming step, for example, the coat layer is formed by applying a coating agent containing an acrylic resin. In applying the coating agent, for example, the surface density of the coating agent is set to 3.0 to 5.0 g / m ² . If it is 3.0 g / m ² or less, the effect of the surface coat (for example, prevention of adhesion of dirt) may not be sufficient. If it is 5.0 g / m ² or more, the quality of Japanese paper may be somewhat lost.
(2) The invention of claim 2
The method for producing a decorative sheet according to claim 1, further comprising a reinforcing layer forming step of forming a reinforcing layer made of resin on the one side of the Japanese paper layer before the adhesive layer forming step. Is the gist.

Since the decorative sheet produced in the present invention includes a reinforcing layer, the decorative sheet is more excellent in strength and heat insulation. Therefore, for example, if the decorative sheet produced in the present invention is bonded to a core material layer made of a resin or the like, a panel plate excellent in strength and heat insulation can be produced.

-As resin which comprises the said reinforcement layer, a polyethylene terephthalate (polyester), a polypropylene, a polycarbonate etc. are mentioned, for example.
The thickness of this reinforcing layer is, for example, 20 to 150 μm. If it is 20 μm or less, the strength and workability of the decorative sheet may be insufficient, and if it is 150 μm or more, the manufacturing cost of the decorative sheet will be high, or curling will occur in the decorative sheet and the workability will be reduced. There is.

Further, the reinforcing layer and the Japanese paper layer are bonded with, for example, an adhesive.
In addition, the decorative sheet manufactured by this invention can be made into a roll finish, for example using a high-speed automatic machine similarly to the decorative sheet of the said Example 1.
(3) The invention of claim 3
Adhesion formed of a hot melt resin on one side of a Japanese paper layer made of Japanese paper and having a weight per unit area in the range of 15 to 30 g / m ^{2 so} as to have a thickness of 10 to 35 μm. After the layer forming step and the adhesive layer forming step, the one side of the washi layer is brought into contact with a roll, and the one side of the washi layer is fed to the one side while feeding the washi layer using the roll. And a decorative sheet forming step of forming a decorative sheet by forming a coating layer containing an acrylic resin on the side opposite to the surface density in a range of 3.0 to 5.0 g / m ² ; An adhesive step of bonding the core material layer and the decorative sheet by first heating and then cooling the decorative sheet in a state where the adhesive layer is pressed against the core material layer, a method of manufacturing a panel plate And effect.
The panel plate manufactured by the present invention has the texture of Japanese paper by providing the decorative sheet, and is excellent in aesthetics.
Moreover, the panel plate manufactured by this invention is equipped with the decoration sheet in the single side | surface or both surfaces, and since the coating layer is provided in the surface of the decoration sheet, it is hard to get a stain | pollution | contamination.
In the panel plate manufacturing method of the present invention, since the adhesive layer provided on the decorative sheet is used, it is not necessary to separately use an adhesive or the like for bonding the decorative sheet and the core material layer. Therefore, the manufacturing method of the present invention can easily manufacture a panel plate.
Moreover, in the panel plate manufactured, the adhesiveness of a decoration sheet and a core material layer is high.
In the present invention, for example, the decorative sheet is formed into a roll as indicated by reference numeral 5 in FIG. 3, and the roll-shaped decorative sheet is spread on the core material layer while being extended from the outside while being heated and bonded. be able to. As a result, the adhesion between the decorative sheet and the core material layer is high over the entire panel plate, and no wrinkles or the like are generated on the decorative sheet, so that the panel plate can be finished neatly.
The present invention can be performed, for example, simultaneously with the molding of the core material layer, and can be performed as secondary processing after the molding of the core material layer.
-The thickness of the said core material layer can be 0.5-20 mm, for example. In the case of 0.5 mm or less, the heat insulation of the panel plate may not be sufficient. Moreover, if it is 20 mm or more, the manufacturing cost of a panel plate may become high, or construction of a panel plate may become difficult.
The vertical and horizontal dimensions of the panel plate can be set to 180 to 250 cm and 90 to 125 cm, respectively.

(4) The invention of claim 4
The method for producing a panel plate according to claim 3, further comprising a reinforcing layer forming step of forming a reinforcing layer made of a resin on the one side of the Japanese paper layer before the adhesive layer forming step. Is the gist.

Since the decorative sheet in the present invention includes a reinforcing layer, the decorative sheet is more excellent in strength and heat insulation. Therefore, for example, if this decorative sheet is bonded to a core layer made of a resin or the like, a panel plate excellent in strength and heat insulation can be produced.
(5) The invention of claim 5
The gist of the method for manufacturing a panel plate according to claim 4 , wherein the core material layer is a plate-shaped member made of resin.

The panel plate manufactured by the present invention is lightweight, high in strength, and excellent in durability because the core layer is made of resin.
-Examples of the resin include thermoplastic resins such as acrylic resin, styrene resin, polypropylene resin, polycarbonate resin, polyethylene terephthalate resin (polyester resin), ABS resin, and polyethylene resin.
( 6 ) The invention of claim 6
The gist of the method for producing a panel plate according to claim 5 , wherein the plate-like member has pores therein.

The panel plate manufactured by the present invention has a feature that it is lighter because the core material layer is a plate-like member having pores inside.
Moreover, the panel plate manufactured by this invention can improve heat insulation further by having the air which cannot transmit heat in the void | hole of a core material layer, for example.

As resin which comprises the core material layer of this invention, a polyethylene resin, a polypropylene resin, a polycarbonate resin etc. are mentioned, for example.
-As a core material layer which has the said void | hole, there exist a resin board which has a closed cell, and what is provided in the cylinder shape in which a void | hole is parallel, as shown in FIG.

  The thickness of the core material layer having pores is, for example, 2 to 20 mm. If it is 2 mm or less, the heat insulation of the panel plate may not be sufficient, and if it is 20 mm or more, the manufacturing cost of the panel plate may be high, or the construction of the panel plate may be difficult.

Below, the example (Example) of embodiment of the decoration sheet of this invention, its manufacturing method, a panel plate, and its manufacturing method is demonstrated.
Example 1
a) First, a configuration of a decorative sheet and a panel plate using the decorative sheet will be described with reference to FIG. FIG. 1 is a cross-sectional view of the panel plate.

  As shown in FIG. 1, the panel plate 1 is composed of a core material layer 3 and decorative sheets 5 provided on both sides of the core material layer 3. The vertical and horizontal dimensions are 180 cm in length, The width is 90 cm.

The core material layer 3 is a plate-shaped member made of acrylic resin, and the thickness thereof is 2 mm.
The decorative sheet 5 includes a central Japanese paper layer 7, a coat layer 9 provided on the outer side (on the opposite side of the core material layer 3) of the Japanese paper layer 7, and an inner side (core material layer 3) of the Japanese paper layer 7. And the adhesive layer 11 provided on the side facing the substrate.

The Japanese paper layer 7 is a layer made of thin Japanese paper having a weight per unit area of 15 to 30 g / m ² .
The coat layer 9 is formed by applying a coating agent having the following composition.

Acrylic resin: 38-40% by weight
Filler: 0.1 to 0.2% by weight
Additive: 0.3 to 0.5% by weight (the additive comprises, for example, 0.3% by weight of an ultraviolet absorber and 0.1% by weight of a light diffusing agent)
Solvent (MEK): 60-62% by weight
The coat layer 9 has a density of 3.0 to 5.0 g / m ² in terms of solid content.

The adhesive layer 11 is a layer composed of 80% by weight of polyethylene resin and 20% by weight of EVA resin, and serves to bond the decorative sheet 5 and the core material layer 3 together.
b) Next, the manufacturing method of the decoration sheet 5 and the panel plate 1 is demonstrated using FIG.

i) First, a method for manufacturing the decorative sheet 5 will be described.
1) A coating material containing polyethylene resin and EVA resin was applied to one side of the Japanese paper layer 7 so that the thickness of the layer was 15 μm, and the adhesive layer 11 was formed. As a specific coating method, a method was used in which resin pellets were heated and melted and applied to the surface of Japanese paper.

2) A coating agent containing an acrylic resin is applied to the opposite surface of the Japanese paper layer 7 (the surface where the adhesive layer 11 is not formed) so that the surface density of the coating agent is 3.4 g / m ^2. The coating layer 9 was formed, and the decorative sheet 5 was completed. As a specific application method for applying the coating agent, a gravure printing method was used.

  3) The decorative sheet 5 is wound around the paper tube 12 so that the adhesive layer 11 is on the outside so as to be easily bonded to the core material layer 3 to be described later, thereby forming a roll (roll). .

ii) Next, a method of manufacturing the panel plate 1 using the decorative sheet 5 manufactured as described above will be described with reference to FIG.
1) Acrylic resin was molded to the dimensions described in the above a) to form the core material layer 3.

  2) On one side of the core material layer 3, the scroll of the decorative sheet 5 produced in i) was spread so that the adhesive layer 11 faced the core material layer 3. And the decoration sheet 5 was completed by heating the contact bonding layer 11, melting the contact bonding layer 11, joining the core material layer 3 and the contact bonding layer 11, and cooling after that.

Similarly, the decorative sheet 5 was joined to the opposite side of the core material layer 3 to complete the panel plate 1.
c) Next, effects produced by the decorative sheet 5 and the panel plate 1 will be described.

  1) In the decorative sheet 5 of Example 1, the coat layer 9 includes an acrylic resin. Since this acrylic resin does not soak into the Japanese paper layer 7, the texture of the decorative sheet 5 does not become like a resin sheet, and the texture of the Japanese paper can be maintained.

  2) Since the decorative sheet 5 of Example 1 is provided with the coat layer 9, it is difficult to be stained. Therefore, the decorative sheet 5 is not contaminated in the process of bonding the decorative sheet 5 to the core material layer 3. As a result, the manufacturing yield of the panel plate 1 can be improved and the manufacturing cost can be reduced.

  3) The decorative sheet 5 of Example 1 is manufactured by first forming the adhesive layer 11 and then applying the coating agent to form the coat layer 9. Therefore, in Example 1, the coating agent applied to one side of the Japanese paper layer 7 does not ooze out to the opposite side of the Japanese paper layer 7 due to the adhesive layer 11.

  Therefore, in the process of manufacturing the decorative sheet 5, when the decorative sheet 5 is sent using a roll, even if the surface of the decorative sheet 5 opposite to the coat layer 9 is in contact with the roll, acrylic resin or the like is applied to the roll. Will not adhere. As a result, the decorative sheet 5 of Example 1 can prevent troubles caused by adhesion of acrylic resin or the like to the roll.

  5) Since the decorative sheet 5 of Example 1 contains the ultraviolet absorber in the coat layer 9, the Japanese paper layer 7 and the adhesive layer 11 are discolored even when the decorative sheet 5 is exposed to ultraviolet rays for a long time. There is no.

In addition, since the coating layer 9 contains a light diffusing agent, when the decorative sheet 5 or the panel plate 1 is used for a part (for example, a window) that takes in light such as a building, the direct light is softened and the room is brightened. The effect to do.
(Example 2)
a) The configuration of the decorative sheet 5 and the panel plate 1 of the second embodiment is basically the same as that of the first embodiment.

  However, in the second embodiment, the core material layer 3 of the panel plate 1 has pores therein. That is, as shown in FIG. 4, the core material layer 3 connects a pair of surface layer portions 13 that respectively cover the upper surface (upper side in FIG. 4) and the lower surface of the core material layer 3 and the surface layer portions 13. In the core material layer 3, a hole 17 surrounded by the surface layer portion 13 and the support column 15 is formed. Here, the support column 15 extends from the end of the core material layer 3 in the direction perpendicular to the paper surface of FIG. 4, and accordingly, the holes 17 extend in the direction perpendicular to the paper surface of FIG. 4. 3 is penetrated from end to end.

  Further, the surface layer portion 13 is slightly recessed in the vicinity of the column portion 15, and is slightly swollen between the column portions 15. Accordingly, the surface layer portion 13 has irregularities at the same period as the interval between the support column portions 15.

The decorative sheet 5 and the panel plate 1 of the present invention are basically manufactured in the same manner as in the first embodiment.
However, in Example 2, the core material layer 3 is manufactured by an extrusion molding method.

b) The effect which the decoration sheet 5 and the panel plate 1 of Example 2 show is demonstrated.
1) The decorative sheet 5 and the panel plate 1 of the second embodiment have the same effects as the first embodiment.

  2) The panel plate 1 of the second embodiment has a feature that it is lightweight because the core material layer 3 has the holes 17. Further, the panel plate 1 of the second embodiment has holes 17 in the core material layer 3, and air that is difficult to transfer heat enters the holes 17, and thus has a feature of high heat insulation.

3) Since the decorative sheet 5 of Example 2 is provided with the coat layer 9 and the adhesive layer 11 on both sides of the Japanese paper layer 7, it has moderate rigidity and is more easily compared with a sheet made of only Japanese paper. Hard to become. Therefore, even when the surface of the core material layer 3 is uneven, when the decorative sheet 5 is attached to the surface of the core material layer 3, no wrinkles are generated on the decorative sheet 5 and the appearance of the panel plate 1 is good. It is.
(Example 3)
The configurations of the decorative sheet 5 and the panel plate 1 of the third embodiment are basically the same as those of the first embodiment.

However, in Example 3, as shown in FIG. 5, the decorative sheet 5 is pasted only on one side of the core material layer 3.
The panel plate 1 of the third embodiment has features that the manufacturing cost is low and the light transmittance is high because there is no need to attach the decorative sheet 5 to both sides.
Example 4
The configurations of the decorative sheet 5 and the panel plate 1 of the fourth embodiment are basically the same as those of the first embodiment.

  However, as shown in FIG. 6, the decorative sheet 5 of Example 4 includes a reinforcing layer 19 made of polyethylene terephthalate and having a thickness of 150 μm between the Japanese paper layer 7 and the adhesive layer 11. The reinforcing layer 19 is attached to the Japanese paper layer 7 by an adhesive laminating method, and then the adhesive layer 11 is formed on the reinforcing layer 19.

The panel plate 1 of the fourth embodiment has higher strength and heat insulation properties because the decorative sheet 5 includes the reinforcing layer 19.
(Comparative Example 1)
In this comparative example 1, as shown in FIG. 7, first, 1) an adhesive layer made of polypropylene resin is formed on the back surface of the thin Japanese paper 21 (the surface to be bonded to the core material layer 3 later), and the thin Japanese paper 21 is bonded to both surfaces of the core material layer 3 by a method of simultaneous lamination at the time of extrusion molding. Here, the surface of the thin Japanese paper 21 is not coated.

Next, 2) A coating agent prepared by diluting a clear type synthetic resin waterproof paint (made by Asahi Pen) with thinner at a density of 9.5 g / m ^{2 on} one side is formed on the surface of the thin Japanese paper 21 to form a coating layer 23. Thus, the panel plate 25 was completed. Here, the core material layer 3 is the same as that of Example 2, and has irregularities on the surface. The thin Japanese paper 21 is the same as that used for the Japanese paper layer 7 of the decorative sheet 5 in Example 1.

In the panel plate 25 of the comparative example 1, the coating agent soaked into the thin Japanese paper 21 to some extent, and the texture of the surface of the panel plate 25 became slightly soaked.
Further, when the thin Japanese paper 21 was attached to the core material layer 3, the surface of the thin Japanese paper 21 was not formed with a coat layer, so that the dirt was easily attached.

Further, when the thin Japanese paper 21 was attached to the core material layer 3, the surface of the core material layer 3 was uneven, so that wrinkles were likely to occur in the thin Japanese paper 21 and the appearance was poor.
(Comparative Example 2)
In this comparative example 2, as shown in FIG. 8, first, 1) a coating agent obtained by diluting a clear type synthetic resin waterproof paint (made by Asahi Pen) with thinner on one side of thin Japanese paper 21 is 7.7 g / m ² . A coating layer 23 was formed by coating at a density to obtain a decorative sheet 27. Next, 2) a melt film is used on the surface of the core material layer 3 and transferred as an adhesive layer, and then the decorative sheet 27 and the core material layer 3 are bonded together by heating and pressurizing to complete the panel plate 29. did. Here, the core material layer 3 is the same as in the first embodiment.

  In the panel plate 29 of the comparative example 2, the coating agent penetrates deeper into the thin Japanese paper 21 than in the comparative example 1, and the surface texture of the panel plate 29 becomes like a resin plate. The texture of Japanese paper has been lost.

  Moreover, in this comparative example 2, since the decorative sheet 27 consists of the thin Japanese paper 21 and the coat layer 23, there is no flexibility and it is easily cut or torn. Therefore, in the panel plate 29 of the comparative example 2, the decorative sheet 27 is cut or torn in the manufacturing stage, and the manufacturing yield is lowered.

Needless to say, the present invention is not limited to the above-described embodiments, and can be implemented in various modes without departing from the scope of the present invention.
For example, in the step of adhering the decorative sheet 5 to the core material layer 3 in Example 1, the decorative sheet 5 wound on separate rolls is pressed against both surfaces of the core material layer 3 and simultaneously heat-pressed. Thus, the decorative sheets 5 on both sides of the core material layer 3 can be bonded simultaneously.

It is explanatory drawing which shows the structure of the panel plate of an Example. It is explanatory drawing which shows the manufacturing method of the decorative sheet of an Example. It is explanatory drawing which shows the manufacturing method of the panel plate of an Example. It is explanatory drawing which shows the structure of the panel plate of an Example. It is explanatory drawing which shows the structure of the panel plate of an Example. It is explanatory drawing which shows the structure of the panel plate of an Example. It is explanatory drawing which shows the manufacturing method of the panel plate of a comparative example. It is explanatory drawing which shows the manufacturing method of the panel plate of a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Panel plate 3 ... Core material layer 5 ... Decoration sheet 7 ... Japanese paper layer 9 ... Coat layer 11 ... Adhesive layer 13 ... Surface layer part 15 ... Support | pillar part 17 ... Hole 19 ... Reinforcing layer

Claims (8)

A Japanese paper layer made of Japanese paper,
An adhesive layer formed on one side of the Japanese paper layer and made of hot melt resin;
A coating layer that is formed on the opposite side to the one side with respect to the Japanese paper layer and includes an acrylic resin,
A decorative sheet characterized by containing. The decorative sheet according to claim 1, further comprising a reinforcing layer made of a resin between the Japanese paper layer and the adhesive layer. An adhesive layer forming step of forming an adhesive layer made of hot melt resin on one side of the Japanese paper layer made of Japanese paper;
A coat layer forming step of forming a coat layer containing an acrylic resin on the side opposite to the one side with respect to the Japanese paper layer,
A method for producing a decorative sheet, comprising: Before the adhesive layer forming step,
The method for producing a decorative sheet according to claim 3, further comprising a reinforcing layer forming step of forming a reinforcing layer made of a resin on the one side of the Japanese paper layer. A core layer,
A panel plate comprising: the decorative sheet according to claim 1 or 2 provided on one side or both sides of the core material layer so that the adhesive layer faces the core material layer. 6. The panel plate according to claim 5, wherein the core layer is a plate-shaped member made of resin. The panel plate according to claim 6, wherein the plate-like member has pores therein. A method for producing a panel plate according to any one of claims 5 to 7,
A method of manufacturing a panel plate, comprising: heating the adhesive layer of the decorative sheet to contact the core material layer, and bonding the core material layer and the decorative sheet.

Images