JP3212246B2 - Decorative board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a reduction粧板, more particularly, to decorative plates using base paper or resin-impregnated paper available for decorating the surface of various substrates.

[0002]

2. Description of the Related Art Conventionally, decorative boards have been used for interior materials of buildings, furniture and the like. This type of decorative board is manufactured by sequentially laminating a resin-impregnated surface protection paper, a pattern printing decorative paper, a base shielding paper, a reinforcing core paper, and a back paper, followed by hot press molding. Here, as the resin, a thermosetting resin such as an alkyd resin, a diallyl phthalate resin, an acrylate resin, and a vinyl ester resin is used. In addition, when forming a decorative board, a pattern of the pattern-printed decorative paper is printed on a natural stone pattern in order to make the surface of the decorative board look like a natural stone.

[0003] In such decorative boards, there is a problem that the "depth feeling" or "depth feeling" peculiar to natural stone is very poor because the pattern layer becomes flatter. For this reason, a decorative board intended to express a sense of depth or the like has been proposed (for example, Japanese Patent Application Laid-Open No. Hei 3-1218).
No. 45). Here, the sense of depth like a natural stone can be explained as follows. For example, in the case of granite, the granite contains feldspar and colored minerals, such as brown and black plum, and the colored minerals are distributed evenly from the surface to the inside. Since feldspar is quartz and translucent, part of the light that hits the surface is reflected, part of the light enters the interior, and is reflected complexly by the surface of the dung distributed inside and emerges on the surface. Become. These lights are intricately entangled and enter the human eye, and this is perceived as a unique sense of depth.

However, in the decorative panel disclosed in Japanese Patent Application Laid-Open No. 3-121845, when used in a high humidity environment such as a bathroom, mold is generated on the pulp fiber exposed on the surface of the decorative panel. This propagates the mold inside the resin layer along the pulp fiber, and even if the surface is cleaned, the mold remains inside and cannot be removed. In particular, when black mold is generated, there is a problem that the design of the decorative board is significantly reduced. In order to solve this problem, a method of adding a fungicide to the resin or covering the surface with a transparent resin layer can be considered, but a permanent fungicide effect cannot be expected due to outflow and deterioration of the fungicide. . On the other hand, in the configuration in which the resin layer is provided, when the surface of the resin layer is damaged, there is a problem that the film effect cannot be effectively exerted, and as a result, the antifungal effect is lost.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention, even when used in a high humidity environment of the bathroom or the like, it is possible to avoid the generation of mold, can Ru of maintaining a cosmetic effect for a long time To provide a decorative board.

[0006]

In order to achieve the above object, the present invention uses glass fiber as a main component without using any moisture-absorbing or water-absorbing material such as pulp for papermaking. A configuration in which pumice is contained in the fiber is employed as a basic configuration.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A base paper used for a decorative board according to the present invention is composed of glass fibers for papermaking and at least one plum distributed uniformly in the glass fibers. Is provided at a paper thickness of 5 times or more and 5000 times or less. The non-water absorbing property of the glass fiber and the pumice suppresses the generation of mold and makes it possible to maintain the design properties of the base paper unchanged over a long period of time.

The weight of the base paper is 0.2 to 5.0.
It is preferable to employ transparent and / or colored particles of mm, so that the base paper can be easily formed. Plums are mixed at a ratio of 1 to 60 parts by weight with respect to 100 parts by weight of the glass fiber component, so that a pattern closest to the appearance of natural stone can be displayed. Further, the aspect ratio (average particle diameter / thickness of plum) is 50 to 2000.
Is adopted.

Further, the amount of plum added is 1 to base paper.
It is preferable that the base paper is 60% by weight and has a basis weight of 30 to 300 g / m ² .

[0010] The resin-impregnated paper used for the decorative board according to the present invention is obtained by impregnating the base paper with 100 to 300 parts by weight of a thermosetting resin and hot pressing the base paper. Here, when the impregnation amount of the thermosetting resin is less than 100, glass fibers appear on the surface and the gloss becomes nonuniform.
If it exceeds 00, the flow of the resin occurs, causing color unevenness.

Further, the decorative sheet according to the present invention comprises a base paper impregnated with a thermosetting resin to provide a decorative sheet, and the decorative sheet is formed by hot-pressing with a predetermined base material and integrated. It includes a resin-impregnated paper and a predetermined base material that are integrated by bonding.

The resin-impregnated paper in the present invention refers to a base paper impregnated with a resin and thermally cured, and the decorative sheet refers to a base paper impregnated with a resin and uncured. The aspect ratio is preferably 50 to 500 out of the above 50 to 2,000 in order to improve the surface smoothness of the base paper.

As a method for producing the base paper, one or more types of papermaking glass fibers having a filament diameter of 5 to 20 μm and a fiber length of 3 to 50 mm are used with a pulper, and polyethylene glycol is added as a fiber dispersant if necessary. Prepare slurry. Next, the pimples are added to the slurry and mixed uniformly, and if necessary, a fixing agent such as polyacrylamide is added, and papermaking is performed using a known paper machine such as a fourdrinier paper machine or a circular net paper machine. . At this time, in order to increase the adhesive strength between the glass fiber and the resin, a glass fiber which has been surface-treated with a silane coupling agent may be used as a raw material.

The plums used in the present invention include white plums, black plums, sodown plums, sericites, vanadin plums, black plums such as illite and the like.
It is a black plum type such as Kinmo, Tetum plum, Chinwald plum, etc.In addition to these plums, a thin film layer such as titanium oxide or iron oxide is formed on the plum surface by a chemical reaction,
Any of an interference-colored mound that exhibits an interference color, a colored mound having a muffled surface coated with a coloring pigment such as iron oxide, navy blue, chromium oxide, and carmine together with a binder can be used. These plums are characterized by having a flat plate-like shape. In addition, the average particle size refers to an average value of a length in a longitudinal direction showing a complicated shape, not in a thickness direction of a flat mound.

As the resin to be impregnated, a thermosetting resin such as a diallyl phthalate resin, a melamine resin, a phenol resin, an epoxy resin, an alkyd resin, an acrylate ester and a vinyl ester is employed. The impregnation amount of the resin is more preferably 120 to 200 parts by weight in the above-mentioned range.

In the decorative board of the present invention, a concealing paper is used between the resin-impregnated paper and the base material as required.

As the base material, plywood, MDF, particle board, FRP, asbestos board, calcium silicate board and the like having a certain thickness and rigidity required for a decorative board can be appropriately selected. When integrated by hot pressing, a sheet molding compound (SMC) can be used as the base material.

In the decorative board, a structure in which a transparent layer using an appropriate resin or paint is added to the surface of the resin-impregnated paper may be provided as necessary.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. Here, FIG. 1 shows an exploded sectional view of each layer of the decorative board,
FIG. 2 is a sectional view of a main part showing the decorative board at the time of completion of molding.

(Example 1) Chopped strand 1 having a filament diameter of 10 µm and a fiber length of 13 mm as glass fiber
00 parts by weight (Nitto Boseki Co., Ltd. CS-13J-888)
Was disintegrated with a pulper to obtain a glass fiber dispersion having a concentration of 3 g / l. Colored mushrooms having an average particle size of 5.0 mm and an aspect ratio of 170 were added to the glass fiber so as to be 20 parts by weight, mixed and uniformly dispersed. To this, a polyacrylamide-based fixing agent was added in an amount of 0.5% by weight with respect to glass fiber, and using a fourdrinier paper machine, a paper thickness of 0.30 mm and a basis weight of 200 were used.
g / m ² base paper was produced. Next, a resin was prepared by mixing 1% by weight of initiator benzoyl peroxide (BPO), 74% by weight of diallyl phthalate resin, and 25% by weight of acetone. After taking up 200 parts by weight of this resin and impregnating the entire amount into the base paper, the acetone solvent was evaporated at 80 ° C. for 30 minutes to obtain a resin-impregnated paper 10. Similarly, 50 g of the above-mentioned resin was impregnated into 1 m ² of titanium paper having a thickness of 0.1 mm to obtain concealment paper 11 in which acetone was evaporated. Then, the resin-impregnated paper 10 is placed on the aluminum mirror plate coated with the release agent,
The concealment paper 11 and a water-resistant plywood 12 as a base material having a thickness of 12 mm are set in a press in this order, and pressurized at 10 kg / cm ² ,
After heating to 140 ° C. and standing for 10 minutes, the pressure was released to obtain a decorative board 20.

With respect to the decorative board 20 thus obtained,
Based on the mold resistance test (JIS Z 2911), after culturing the mold, the mold on the surface was removed by washing with water. As a result of examining the remaining state of the mold on the surface in comparison with the blank before the test, no change was found. In addition, the decorative plate 20 was very deep, had a high texture, and had good surface smoothness.

Example 2 Chopped strand 1 having a filament diameter of 10 μm and a fiber length of 13 mm as glass fiber
00 parts by weight (Nitto Boseki Co., Ltd. CS-13J-888)
Was pulverized with a pulper, and pimples having an average particle diameter of 1.0 mm and an aspect ratio of 300 were added to the glass fiber so as to be 1 part by weight, mixed and uniformly dispersed. Then, a polyacrylamide-based fixing agent was added to the glass fiber at a weight of 0.
5% was added, and a base paper having a paper thickness of 0.09 mm and a basis weight of 50 g / m ² was formed using a fourdrinier paper machine. Next, a resin-impregnated paper 10 was obtained under the same conditions as in Example 1. Others are the same as in the first embodiment.
The decorative board 20 was manufactured in the same manner as described above. Obtained decorative board 2
At 0, when the same evaluation method was used based on the above-mentioned mold resistance test, no change was observed.
In addition, the resin impregnation was successfully performed, and the depth was also good.

(Example 3) A decorative board 20 was obtained in the same manner as in Example 2 except that pumice was added so as to be 60% by weight with respect to the base paper. Also in this example, no surface change was observed at all, and a better sense of depth could be obtained.

[0024] (Example 4) the sheet thickness of the base paper 0.5 mm, except that the basis weight was 300 g / m ² in the same manner as in Example 2 veneer 2
0 was obtained. The decorative board 20 had a slightly lower resin impregnating property than that of Example 3, but had no surface change.
A sense of depth of 0 could secure a practical range that could be doubted as a natural stone pattern.

Example 5 A decorative plate 20 was obtained in the same manner as in Example 4 except that pumice was added so as to be 40% by weight based on the base paper. Also in this embodiment, there is no change in the surface of the decorative board 20, and the decorative board 20 having a more excellent sense of depth by increasing the amount of plumage added than in the fourth embodiment.
And could be.

(Example 6) A sheet molding compound (Yupika SMC3112 manufactured by Nippon Yupika Co., Ltd.) and the resin-impregnated paper 10 obtained in Example 1 were set on a mirror-shaped press die coated with a release agent. , 50 kg / cm ² , and heated at 140 ° C. for 10 minutes, and then decompressed to obtain a decorative board 20. The surface of the decorative board obtained in this example did not change at all in the same test results.

Comparative Example 1 40 parts by weight of softwood bleached kraft pulp and 60 parts by weight of hardwood bleached kraft pulp were pulverized with a pulper. 20 parts by weight were added, mixed and uniformly dispersed. To this, a wet paper strength enhancer was added at 0.5% by weight to pulp, and a polyacrylamide-based fixing agent was added at 0.5% by weight to pulp. 200
g / m ² base paper was produced. Next, a resin was prepared by mixing 1% by weight of initiator benzoyl peroxide (BPO), 74% by weight of diallyl phthalate resin, and 25% by weight of acetone. After taking up 200 parts by weight of this resin and impregnating the entire amount into base paper, the acetone solvent was evaporated at 80 ° C. for 30 minutes to obtain a resin-impregnated paper. Similarly, 50 g of the above resin was impregnated into 1 m ² of titanium paper having a thickness of 0.1 mm to obtain a concealing paper in which acetone was evaporated. Next, the resin-impregnated paper was placed on the aluminum mirror plate coated with the release agent, and the concealment paper and the water-resistant plywood as a base material having a thickness of 12 mm were set in the press in this order, and pressed at 10 kg / cm ² , After heating to 140 ° C. and standing for 10 minutes, the pressure was released to obtain a decorative board. The mold was subjected to the mold resistance test used in the above examples, and as a result, black mold was observed on the surface of the decorative board after washing with water.

[0028]

As is clear from the above Examples and Comparative Examples, according to the present invention, no mold that cannot be removed by washing with water is not generated at all, and the present invention can be applied particularly in a high humidity environment. , And it is possible to impart a high texture with a sense of depth or depth similar to that of natural stone.

[Brief description of the drawings]

FIG. 1 is an exploded sectional view of each layer when a molded article according to the present invention is molded as a decorative board.

FIG. 2 is a cross-sectional view showing the decorative plate when molding is completed.

[Explanation of symbols]

10 ・ ・ Resin impregnated paper 、 12 ・ ・ ・ ・ Water resistant plywood as base material
20 ・ ・ Veneer board

Claims (2)

(57) [Claims] 1. A base paper provided with a glass fiber for papermaking and at least one kind of plum distributed uniformly in the glass fiber, and provided with a paper thickness of 5 to 5000 times the thickness of the plum . Decorative sheet impregnated with thermosetting resin
The decorative sheet is hot-pressed together with the specified base material.
A decorative board characterized by being integrated by being integrated. 2. A glass fiber for papermaking, and the glass fiber
Composed of at least one kind of plum
Paper thickness not less than 5 times and not more than 5000 times the thickness of the plum
Using the base paper provided in
100-300 parts by weight of resin and hot-pressed resin
The feature is that the paper immersion and the specified base material are bonded and integrated.
Decorative vase.