JPH09262955A - Grained decorative board and combination structure of top board and side board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grained decorative board and a combination structure of a top board and a side board, with superb light fastness and design uniformity, and with the cross section of wood not susceptible of a darkening phenomenon. SOLUTION: A resin-impregnated pattern layer 6 which has a printed grained pattern 7 and is impregnated with a resin is formed on a core base board 5 consisting of a resin-impregnated paper 4 which is impregnated with a phenol resin. The colors of the resin-impregnated pattern layer and the core base board are the control colors 4.5YR-10.0Y complying with the JIS Standard. The constituting resin-impregnated paper of the core base material is made of bleached kraft paper and the content of ash is 0.3-6.0wt.%. An overlay layer should preferably be formed on the resin-impregnated pattern layer. The grained decorative board is also used as a top decorative board.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a wood-grained decorative board that is mainly used as a top plate of furniture when making store furniture (furniture, tools) and the like, and in particular, has excellent light resistance and is a plywood-based decorative plywood. The present invention relates to a wood-grained decorative board that does not darken the wood surface even when combined with the wood and does not impair the design uniformity.

[0002]

2. Description of the Related Art Conventionally, various wood grain decorative boards in which wood grain is printed on a pattern paper have been proposed and used for making store furniture. Generally, store fixtures are
As shown in FIG. 5, the side plate 21 and the top plate 22 are combined at a right angle. The side plate 21 is made of wood 121
And a side plate decorative material 9 covering the surface thereof. The top plate 22 includes a wood 122 and a top plate decorative material 111 that covers the surface of the wood 122.

The side panel decorative material 9 is a decorative plywood in which a polyester-impregnated decorative paper 10 is attached on a plywood 11. Also,
The top plate decorative material 111 is a core substrate 55 made of resin-impregnated paper.
It is a woodgrain decorative board formed by laminating a resin impregnated pattern layer 66 on the above. Resin-impregnated paper is unbleached unbleached kraft paper impregnated with phenolic resin. The resin-impregnated pattern layer is formed by impregnating melamine resin on a pattern paper on which a wood grain pattern is printed.

[0004]

However, in the above-described conventional woodgrain decorative board, the core substrate 55 becomes darker than the resin-impregnated pattern layer 66. If such a decorative board is used as a top board and combined with a side board of the same color and pattern, a black line will be visible on the surface of the mouth, impairing the color uniformity of the furniture.

In view of the above-mentioned conventional problems, the present invention has excellent light resistance, does not darken the wood grain surface, and has excellent design uniformity, and a wood grain decorative board and a combination of a top board and a side board. It is intended to provide structure.

[0006]

According to a first aspect of the present invention, there is provided a resin-impregnated pattern layer comprising a core substrate made of resin-impregnated paper impregnated with a phenol resin and a wood-grain pattern printed on the core substrate. In the formed wood grain decorative board, the color of the resin-impregnated pattern layer and the color of the core substrate are controlled hues of 4.5YR to 10.0Y according to the JIS standard of the Japan Color Research Institute, The resin-impregnated paper forming the core substrate is made of bleached kraft paper and has an ash content of 0.3 to 6.0% by weight.

What is most noticeable in the present invention is that the resin-impregnated paper forming the core substrate is made of bleached kraft paper, the ash content of the bleached kraft paper is 0.3 to 6.0% by weight, and The colors of the core substrate and the resin-impregnated pattern layer are controlled hues according to the JIS standard of the Japan Color Research Institute (hereinafter referred to as controlled hues) 4.5YR to 10.0Y.
It is to be.

Next, the function and effect of the present invention will be described. In the present invention, the resin-impregnated pattern layer is printed with a woodgrain pattern. Since the woodgrain pattern is warm, it is ideal as a surface pattern for furniture and other furniture. The present invention also uses a core substrate made of phenol resin-impregnated paper. The resin-impregnated paper forming the core substrate is made of bleached kraft paper. What is bleached kraft paper?
Kraft paper that is decolorized and bleached from pulp. When this bleached kraft paper is impregnated with phenolic resin, the brown color of the phenolic resin is diluted to the color of the kraft paper, resulting in resin-impregnated paper that is easy to match with the wood grain.

Furthermore, in the present invention, the ash content in the bleached kraft paper is 0.3 to 6.0% by weight. By adjusting the ash content within this range, the hue of the core substrate made of resin-impregnated paper can be adjusted to a wood grain tone. In addition, the above-mentioned ash content is excellent in light resistance because it can prevent the phenol resin of the core substrate from being discolored to black by the irradiation of light and prevent the color tone from being inconsistent with the resin-impregnated pattern layer. .
Therefore, it is possible to prevent the deterioration of the design of the wood grain surface of the wood decorative surface with time. Of the ash content, titanium dioxide, in particular, can block the light from the outside and further improve the light resistance of the phenol resin.

Further, since the darkening can be prevented by the ash content, the core substrate becomes inconspicuous, and the concealing property of the core substrate can be secured. Therefore, even when the wood grain decorative board is used as a top panel decorative material and is combined with the side plate at a right angle, it is possible to prevent the color of the side plate from being reflected on the core substrate and prevent the deterioration of the design of the mouth end surface. .

On the other hand, when the ash content is less than 0.3% by weight, the phenol resin itself has a poor light resistance, so that when it is exposed to light, the core substrate becomes black and the core substrate becomes dark, resulting in a mismatch with the color tone of the resin-impregnated pattern layer. Resulting in. Further, the concealing property of the core substrate is lowered, the color of the decorative material of the side plate is reflected on the core substrate, and the core substrate becomes dark, resulting in inconsistency with the color tone of the resin-impregnated pattern layer.

On the other hand, when the ash content exceeds 6.0% by weight, the ash content increases, the color of the core substrate becomes too white, and even if the resin is impregnated with the phenol resin, it does not give a wood grain tone and the resin impregnation pattern. Color matching with layers cannot be obtained. Further, the ash content is more preferably 0.8 to 5.0% by weight. This can further prevent the color change of the phenol resin due to the light irradiation.

As described above, in the above ash content range, color matching between the resin-impregnated pattern layer and the core substrate can be obtained, and the color matching between the two should not be impaired by the irradiation of light. It can be said that it is a range that has a specific effect. As for ash, for example, in addition to the above-mentioned titanium oxide, calcium carbonate, clay, diatomaceous earth, talc,
Barium sulfate, ocher, red iron oxide, chrome yellow,
Can be used. The ash calculation method of the present invention is based on JIS
P8101-1961, JIS P8204-196
It does based on 1.

In the decorative board of the present invention, the color of the resin-impregnated pattern layer and the core substrate is in the management hue range of 4.5YR to 10.0Y. Since the above-mentioned color range is a so-called yellowish color, it is difficult to absorb light and the discoloration of the phenol resin of the core substrate can be suppressed. Further, even if the phenol resin is discolored, the color range is hard to be recognized by the human eye, and therefore, the color mismatch between the resin-impregnated pattern layer on the mouth end surface and the core substrate can be easily hidden.

The color of the woodgrain pattern printed on the resin-impregnated pattern layer is adjusted within the above-mentioned control hue range. Incidentally, the management hue conforming to the JIS standard of the Japan Color Research Institute is such that hues such as yellow, green, blue, purple, red and orange can be represented by symbols and numerical values.

In the present invention, the core substrate is a sheet of resin-impregnated paper or a stack of a plurality of resin-impregnated papers.
Resin impregnated paper is bleached kraft paper impregnated with phenolic resin. The amount of the phenol resin impregnated in the core substrate is preferably 30 to 100% by weight. The reason for this is that if the amount is less than 30% by weight, the amount of resin is too small for molding, and if the amount exceeds 100% by weight, the resin bleeds onto the decorative surface during molding, which is unsuitable.

The thickness of the core substrate is 0.6 to 15 m
m is desirable. If it is less than 0.6 mm, the hiding property is poor, and 1
If it exceeds 5 mm, the cost may increase. The amount of resin impregnated into the pattern paper is preferably 30 to 100% by weight. The reason for this is that if the amount is less than 30% by weight, the amount of resin is too small to mold, and the amount is 100% by weight.
This is because if it exceeds the range, the resin will flow out during molding, which is unsuitable.

The resin impregnated in the resin impregnation pattern layer is
There are thermosetting resins such as melamine resin, polyelter resin, diallyl phthalate resin, and epoxy resin. Especially,
In the present invention, a translucent resin is preferable. Specifically, as described in claim 3, the resin impregnated in the resin impregnated pattern layer is preferably a melamine resin. As a result, the resin-impregnated pattern layer can be integrated with the core substrate without impairing the design.

Further, as described in claim 2, it is preferable that an overlay layer is formed on the resin-impregnated pattern layer. As a result, the resin-impregnated pattern layer can be protected and abrasion resistance can be improved.

The thickness of the overlay layer is 0.1 to
0.25 mm is desirable. If the thickness is less than 0.1 mm, there is no depth, resulting in poor stereoscopic effect. On the contrary, if the thickness exceeds 0.25 mm, the transparency may be poor and the design may be impaired.

The overlay layer is, for example, a bleached kraft paper impregnated with a resin. The amount of resin impregnated into the overlay paper is preferably 30 to 100% by weight. The reason for this is that if the amount is less than 30% by weight, the amount of resin is too small to perform molding, and if the amount exceeds 100% by weight, the resin may flow out during molding, which may be inappropriate.

The resin with which the overlay layer is impregnated is a thermosetting resin such as a melamine resin, a polyelter resin, a diallyl phthalate resin or an epoxy resin. Particularly, a translucent resin is desired in the present invention. Specifically, melamine resin is preferable. Thereby, the resin-impregnated pattern layer can be protected without impairing the color and pattern of the resin-impregnated pattern layer.

Next, an example of the method for manufacturing a decorative board of the present invention will be described. 1) First, bleached kraft paper with an ash content of 0.3 to 6% by weight,
It is impregnated with phenol resin and dried to obtain B stage.
Bleached kraft paper is the bleached and bleached pulp of the kraft paper. The adjustment of the ash content can be performed by, for example, incorporating pigment into bleached kraft paper. In addition, by adjusting the degree of bleaching and decoloring of the kraft paper, the color of the resin-impregnated paper when the phenol resin is cured can be adjusted within the above-mentioned control hue range.

2) An impregnated paper having an ash content of 10 to 25% by weight and a wood grain print of a control hue of 4.5YR to 10.0Y is impregnated with a resin, dried, and impregnated with the resin. Use pattern paper. 3) Resin is impregnated into bleached kraft paper that has no ash, and this is dried to form overlay paper.

4) One or a plurality of the core papers of 1) are laminated, and one or more of the pattern papers of 2) or an overlay paper is laminated on the core paper as needed.
Heat at 150 ° C. and press at a pressure of 80 kg / cm ² or more to integrally mold. Below 80 ℃ or 80kg / cm
^In case of ² , it may be difficult to integrally mold. On the contrary, if the temperature exceeds 150 ° C, the resin may be decomposed or modified.

The wood grain decorative board of the present invention has a grain size of 0.6 to 1.6.
In case of thickness of mm, it can be used for table top plate, counter, bay window counter, door surface material, store furniture, post-form processed product, and in case of thickness of 13.0 mm or more, used for toilet booth panel, shower booth panel it can.
In particular, the woodgrain decorative board of the present invention is suitable for use as a furniture (furniture, tool) having a top plate and side plates.

As a combination structure of the top plate and the side plate using the wood grain decorative plate, for example, as described in claim 4, a side plate having a wood grain decorative material attached to the surface of plywood,
A combination structure of a top plate and a side plate having the side plate and a top plate combined at right angles, wherein the top plate is composed of a base material and a top plate decorative material attached to the surface thereof. The decorative board material comprises a resin-impregnated pattern layer formed by impregnating resin with a woodgrain pattern printed on a core substrate made of resin-impregnated paper impregnated with a phenol resin. The color and the color of the core substrate are the management hue 4.5 based on the JIS standard of the Japan Color Research Institute.
YR-10.0Y, and the resin-impregnated paper forming the core substrate is made of bleached kraft paper and has an ash content of 0.3.
There is a combined structure of the top plate and the side plate, which is characterized by being up to 6.0% by weight.

What is most noticeable in the combined structure of the top plate and the side plate is that the wood grain decorative plate is used as a top plate decorative material. Since the top plate decorative material is the above-described wood-grained decorative plate, the core substrate has no darkening. Therefore, even when this top plate decorative material is attached to the top plate and is combined at right angles with the side plate having the wood-grain-like decorative material attached to the surface of the plywood, the color of the side plate is the core substrate of the top plate decorative plate. Since it is not reflected, the color of the core board does not darken. In the top plate decorative material, the wood surface is exposed at the connection part with the side plate, but since the color of the core substrate does not darken, there is no color mismatch between the core substrate and the resin-impregnated pattern layer, Uniformity in terms of design is secured.

Further, even when exposed to light, the core substrate does not discolor and the color does not darken. Therefore, there is no color mismatch between the core substrate and the resin-impregnated pattern layer, and the unity in terms of design can be maintained over time. The side plate used in the present invention is preferably a decorative material made of plywood on which a pattern is printed and polyester resin impregnated paper is attached.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 A woodgrain decorative board according to an embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the wood grain decorative board 1 of this example has a core substrate 5 made of resin-impregnated paper 4,
A resin-impregnated pattern layer 6 formed by printing a woodgrain pattern 7 and impregnating a resin is formed.

Color of resin-impregnated pattern layer 6 and core substrate 5
Are the management hues of 4.5YR and 5.0YR, respectively. The resin-impregnated paper 4 forming the core substrate 5 is a bleached kraft paper impregnated with a phenol resin. The ash content of bleached kraft paper is 2.0% by weight.

Next, a method of manufacturing the wood grain decorative board of this embodiment will be described. (1) First, a bleached kraft paper having a basis weight of 190 g / m ² and containing 2.0% by weight of titanium dioxide as ash is impregnated with phenol resin and dried to obtain resin impregnated paper (core paper). did. Impregnation rate of phenolic resin (impregnation rate =
The weight of the resin amount / the weight of the entire resin-impregnated paper) was 60%.

(2) A pattern paper was obtained by printing a woodgrain pattern on kraft paper having a basis weight of 80 g / m ² and 20% by weight of titanium dioxide. This pattern paper was impregnated with melamine resin and dried to obtain resin-impregnated pattern paper. The color tone of the woodgrain pattern was a management hue of 4.5YR. Impregnation rate of melamine resin (impregnation rate = weight of resin amount /
The weight of the entire resin-impregnated paper) was 60%.

(3) The resin-impregnated patterned paper of (2) is laminated on the five resin-impregnated papers of (1) laminated to form 150
Hot pressing was performed at 80 ° C. for 80 minutes under the condition of 80 kg / cm ² . As a result, the resin-impregnated paper and the resin-impregnated pattern paper were integrally molded, and the resin-impregnated pattern layer 6 having the woodgrain pattern 7 was formed on the core substrate 5 made of the resin-impregnated paper 4. The core substrate 5 had a thickness of 1.1 mm. The color tone of the core substrate was a management hue of 5.0YR.
As described above, the wood grain decorative board 1 was obtained.

Embodiment 2 The wood grain decorative board of this embodiment is different from Embodiment 1 in that an overlay layer 8 is formed on the resin-impregnated pattern layer 6 as shown in FIG. Next, a method of manufacturing the wood grain decorative board 19 of this example will be described. (1) First, a bleached kraft paper having a basis weight of 190 g / m ² and containing 2.0% by weight of titanium dioxide was impregnated with a phenol resin and dried to obtain a resin-impregnated paper (core paper). Impregnation rate of phenolic resin (impregnation rate = weight of resin amount /
The weight of the entire resin-impregnated paper) was 60%.

(2) A pattern paper was obtained by printing a woodgrain pattern on kraft paper with a basis weight of 80 g / m ² and 20% by weight of titanium dioxide. This pattern paper was impregnated with melamine resin and dried to obtain resin-impregnated pattern paper. The color tone of the woodgrain pattern was a management hue of 4.5YR. Impregnation rate of melamine resin (impregnation rate = weight of resin amount /
The weight of the entire resin-impregnated paper) was 60%.

(3) A bleached kraft paper having a basis weight of 10 g / m ² and an ash content of 0% by weight was impregnated with a melamine resin and dried to obtain a resin-impregnated overlay paper. (4) To the one obtained by stacking 5 sheets of resin-impregnated paper of (1),
The resin impregnated pattern paper of (2) and the overlay paper of (3) are laminated, and 60 at 150 ° C under the condition of 80 kg / cm ^2.
Hot pressed for minutes. As a result, resin-impregnated paper, resin-impregnated pattern paper, and overlay paper were integrally molded. Then, the resin-impregnated pattern layer 6 having the woodgrain pattern 7 was formed on the core substrate 5 made of the resin-impregnated paper 4, and the overlay layer 8 was coated on the resin-impregnated pattern layer 6.
The core substrate 5 had a thickness of 1.1 mm. Core substrate 5
Had a controlled hue of 5.0YR. From the above,
A woodgrain decorative board 19 of this example was obtained.

Embodiment 3 In this embodiment, as shown in FIGS. 3 and 4, a side plate 21 and a top plate 22 are provided.
The desk 3 has a combination structure in which and are combined at right angles. The side plate 21 includes a wood 121 as a base material and a side plate decorative material 9 covering the surface thereof. The top plate 22 includes a wood 122 as a base material and a top plate decorative material 100 that covers the surface thereof. As shown in FIG. 4, the side panel decorative material 9 has a wood grain decorative material 10 attached to the surface of a plywood 11. The top plate decorative material 100 is obtained by laminating a resin-impregnated pattern layer 6 on which a wood grain pattern having the same color and pattern as the side plate 21 is printed on a core substrate 5 made of resin-impregnated paper.

Next, a method of manufacturing the desk will be described. (1) First, the impregnated paper on which a woodgrain pattern was printed was impregnated with a polyester resin to obtain a decorative material 10. This decorative material 10 was attached to a plywood 11 with an adhesive to obtain a side plate decorative material 9.

(2) A desk was made of wood such as plywood according to a conventional method. On the surface of the wood 121 for the side plate that constitutes the desk,
The side plate decorative material 9 of (1) was attached with a vinyl acetate or rubber adhesive. Thereby, the side plate 21 was obtained.
Further, the side plate 21 was combined with the wood 122 for the top plate so as to be perpendicular to the side plate 21. Next, the wood grain decorative board obtained in Embodiment 1 was used as a top board decorative material 100 and was attached to the surface of the wood 122 with an adhesive. At this time,
The top 50 of the top plate decorative material 1 was exposed. Thereby, the desk 3 of this example was obtained.

Embodiment 4 The desk of this embodiment is different from Embodiment 3 in that a wood grain decorative board having an overlay layer is used as a top plate decorative material. As the woodgrain decorative board having the overlay layer, the woodgrain decorative board of Embodiment 2 was used. Others are the same as the third embodiment.

(Comparative Example 1) This example is different from Embodiment 3 in that the ash content of the core substrate is 0.05% by weight. Others are the same as the third embodiment. (Comparative Example 2) This example differs from Example 3 in that the ash content of the core substrate is 10.0% by weight. Others are the same as the third embodiment. (Comparative Example 3) This example is different from the above-described Embodiment 3 in that unbleached kraft paper was used instead of bleached kraft paper.

(Experimental example) In this example, with respect to the embodiment examples 3 and 4 and the comparative examples 1 to 3, visual observation of the wood surface of the top plate decorative material and light irradiation test were conducted. In the light irradiation test, the top plate decorative material was irradiated with light for 48 hours using an atlas type fade meter according to JIS-K-6902.

As a result, upon visual observation of the mouth surface of the top panel decorative material, in the third and fourth embodiments, the color tone of the resin-impregnated pattern layer and the color tone of the core substrate match, and the hue of the mouth surface is There was no sense of incongruity. On the other hand, in Comparative Example 1, the core substrate was darkened, and a feeling of discomfort was generated in the wood surface of the connection portion with the side plate. In Comparative Example 2, the core substrate turns white,
There was a feeling of discomfort on the lips In Comparative Example 3, since the core substrate turns black, black lines occur.

Next, when a light irradiation test was conducted, in the third and fourth embodiments, there was almost no change in color of the core substrate 5.
On the other hand, in Comparative Example 1, the phenol resin of the core substrate 5 was discolored black and a black line was generated on the cusp surface. In Comparative Example 2, the core substrate 5 remained white, and the surface of the wood had an uncomfortable feeling. In Comparative Example 3, since the core substrate 5 was further blackened, a black line was generated.

In the third and fourth embodiments of the present invention, the reason why the color of the core substrate 5 does not change even when irradiated with light is that the ash contained in the core substrate has a light shielding power.
It is considered that this is because the color tone of the core substrate is 5.0YR, which is a yellowish color, and has excellent light reflectivity. As described above, according to the present invention, even when the wood grain decorative plate is used as a top plate decorative material, black lines do not occur on the wood mouth surface and the design is excellent. Furthermore, even when exposed to light, the color of the core substrate does not change and the color change of the core substrate is prevented, so that the color uniformity can be maintained.

[0047]

According to the present invention, the light resistance is excellent, and
It is possible to provide a wood-grained decorative board and a combined structure of a top board and a side board, in which the wood surface does not become black and which is excellent in design uniformity.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a wood grain decorative plate according to a first embodiment.

FIG. 2 is a cross-sectional view of a wood grain decorative plate according to a second embodiment.

FIG. 3 is a perspective view of a desk according to the third embodiment.

FIG. 4 is an explanatory view showing a combined structure of a side plate and a top plate in the third embodiment.

FIG. 5 is an explanatory view showing a combined structure of a side plate and a top plate in a conventional example.

[Explanation of symbols]

 1, 19. . . Wood grain decorative board, 3. . . Desk, 4. . . Resin impregnated paper, 5. . . Core substrate, 6. . . Resin impregnated pattern layer, 7. . . Pattern, 8. . . Overlay layer, 9. . . Side plate decorative material 10. . . Polyester impregnated decorative paper, 11. . . Plywood, 21. . . Side plate, 22. . . Top plate, 100. . . Top plate decorative material, 121, 122. . . wood,

Claims (4)

[Claims] 1. A woodgrain decorative board comprising a core substrate made of resin-impregnated paper impregnated with phenolic resin, and a resin-impregnated pattern layer formed by impregnating resin with a woodgrain pattern printed on the core substrate. The color of the resin-impregnated pattern layer and the color of the core substrate are J
The management hue is 4.5YR-10.0Y in accordance with the IS standard, the resin-impregnated paper constituting the core substrate is made of bleached kraft paper, and the ash content is 0.3-6.0% by weight. A wood grain decorative board. 2. The wood grain decorative board according to claim 1, wherein an overlay layer is formed on the resin-impregnated pattern layer. 3. The wood grain decorative board according to claim 1 or 2, wherein the resin impregnated in the resin impregnated pattern layer is a melamine resin. 4. A combination structure of a top plate and a side plate, comprising a side plate having a woodgrain decorative material attached to the surface of the plywood and a top plate combined at right angles with the side plate, wherein the top plate is formed. Is
It consists of a base material and a top plate decorative material attached to the surface of the base plate. The top plate decorative material is made of resin-impregnated paper impregnated with phenol resin, and a wood grain pattern is printed on the core substrate to impregnate the resin. The resin-impregnated pattern layer is formed, and the color of the resin-impregnated pattern layer and the color of the core substrate are controlled hues of 4.5YR to 10.0Y according to the JIS standard of the Japan Color Research Institute. The resin impregnated paper constituting the core substrate is made of bleached kraft paper, and has an ash content of 0.3 to 6.0% by weight. A combination structure of a top plate and a side plate.