JP4647426B2 - Veneer - Google Patents

Description

  The present invention relates to a decorative board, and more particularly to a decorative board to which a magnet such as a hook with a magnet for suspending a cooking utensil in a kitchen can be attached.

  Conventionally, as a decorative board used as an interior / exterior material for this type of building, an inorganic filler such as aluminum hydroxide is mainly used as a material, and a thermosetting resin is added to the surface of the substrate to perform printing. Laminated and integrated decorative paper impregnated with thermosetting resin has been put into practical use.

By the way, the decorative plates described in Patent Documents 1 and 2 below are designed to improve the efficiency of construction by providing a magnetic layer on the sticking surface of the decorative plate and magnetically attaching it to a metal body.
However, since these conventional decorative boards have a magnetic layer disposed on the side of the sticking surface, the magnetic force acting on the surface side of the decorative board is small, so that magnets such as hooks with magnets can be attached. There was a problem that even if it was not installed, it would easily come off.
JP-A-9-1743 JP 2004-98296 A

  The present invention has been made in view of the above-described problems of the conventional decorative plate, and an object of the present invention is to provide a decorative plate in which magnets such as hooks with magnets can be strongly magnetized.

In order to achieve the above object, the decorative board of the present invention is a decorative board having a decorative layer on the surface of a core material layer, wherein kraft paper having a weight of 70 to 150 g / m ² is impregnated with 60 to 150% by weight of melamine resin. And 60 to 90% by weight of an inorganic aggregate containing 30 to 90% by weight of magnetic particles , and impregnated so as to contain 5 to 20% by weight of a thermosetting resin. A magnetic layer containing a non-woven glass nonwoven fabric is laminated as a core material layer.

In this case, the core material layer disposed on the back side of the decorative layer can be composed of a magnetic layer and an inorganic material layer not containing magnetic particles.

The inorganic material layer can contain a glass nonwoven fabric impregnated so as to contain 60 to 90% by weight of the inorganic aggregate and 5 to 20% by weight of the thermosetting resin .

According to the decorative board of the present invention, a magnet such as a hook with a magnet can be magnetized on the surface of the decorative board , and further, a fine wrinkle-like pattern can be prevented from appearing on the surface of the decorative layer. it is, it is possible to obtain a non-combustible decorative board.

Moreover, the core material layer arrange | positioned on the back side of a decorative layer is comprised by the magnetic layer and the inorganic material layer which does not contain a magnetic body particle , Furthermore , an inorganic material layer contains 60 to 90 weight% of inorganic aggregates. In addition, a more suitable non-combustible decorative board can be obtained by including a glass nonwoven fabric impregnated so as to contain 5 to 20% by weight of a thermosetting resin .

  Hereinafter, embodiments of the decorative board of the present invention will be described with reference to the drawings.

FIG. 1 (however, excluding FIG. 1B) shows an embodiment of the decorative board of the present invention.
This decorative board has a decorative layer 1 on the surface of the core material layer 2, a magnetic layer 3 containing magnetic particles is made adjacent to the decorative layer 1 as the core material layer 2, and further on the back surface of the core material layer 2. The back decorative layer 5 is laminated.
Although the thickness of this decorative board is not specifically limited, It is preferable that it is 2-6 mm, especially 2-5 mm in thickness. With this thickness, it is possible to eliminate steps from other decorative plates used in the kitchen, and to finish the kitchen beautifully.

In this case, the surface decorative layer 1 may be, for example, a paper material containing titanium oxide impregnated with a melamine resin.
As the paper material, for example, kraft paper having a weight of 70 to 150 g / m ² can be adopted, and 60 to 150% by weight of melamine resin can be impregnated therein, and an arbitrary printed layer can be formed on the surface thereof. it can.
In this case, in order to prevent a fine wrinkle-like pattern from appearing on the surface of the surface decorative layer 1, it is desirable to set the content of the melamine resin in the surface decorative layer 1 to the above impregnation rate. .

The core material layer 2 can be composed of a magnetic layer 3 containing magnetic particles and an inorganic material layer 4 not containing magnetic particles that can be disposed as necessary.
Specifically, as shown in FIG. 1 (a), one layer adjacent to the decorative layer 1 is composed of the magnetic layer 3, or as shown in FIG. 1 (c), a plurality of layers adjacent to the decorative layer 1 are formed. (3 layers) is composed of the magnetic layer 3, and as shown in FIG. 1 (d), all layers (5 layers) are composed of the magnetic layer 3, and further, deformation such as warping of the decorative board is performed. In order to prevent this, as shown in FIG. 1 (e), one layer adjacent to the decorative layer 1 and one layer adjacent to the back decorative layer 5 are composed of the magnetic layer 3, and the balance of the layer configuration of the core layer 2 is achieved. As long as the magnetic layer 3 is laminated adjacent to the decorative layer 1 as the core material layer 2, an arbitrary layer configuration can be adopted.
Here, in laminating the magnetic layer 3 adjacent to the decorative layer 1 as the core material layer 2, interposing an auxiliary layer between the two layers for the purpose of improving the integrity of the two, This is possible as long as the auxiliary layer does not significantly affect the magnetic force acting on the surface side of the decorative board, and the present invention does not exclude the interposition of such an auxiliary layer.
As shown in FIG. 1B, the magnetic layer 3 is laminated on the decorative layer 1 with the inorganic material layer 4 interposed therebetween, that is, the magnetic layer 3 is substantially formed on the decorative layer 1 as the core material layer 2. What is not laminated | stacked adjacent to becomes the object of the decorative board of this invention.

And the magnetic layer 3 and the inorganic material layer 4 which comprise the core material layer 2 consist of a glass nonwoven fabric or a woven fabric, and besides the magnetic body particle contained in the magnetic layer 3, as an inorganic aggregate, calcium carbonate, talc, kaolin And clay, anhydrous silicic acid, aluminum hydroxide, magnesium hydroxide, calcium hydroxide and the like, and impregnated or coated with a thermosetting resin such as melamine resin and phenol resin.
The thickness of each of the magnetic layer 3 and the inorganic material layer 4 constituting the core material layer 2 is not particularly limited, but is 0.3 to 2.0 mm, particularly 0.5 to 1.0 mm. Preferably there is.

Among these, the magnetic layer 3 contains 30 to 90% by weight, more preferably 50 to 90% by weight of magnetic particles, and together with other inorganic aggregates, an inorganic material (magnetic particles are added). 60 to 90% by weight).
The inorganic material layer 4 contains 60 to 90% by weight of inorganic aggregate without containing magnetic particles.
And it is made for the core material layer 2 whole to contain 5-20 weight% of thermosetting resins.
When the content of the thermosetting resin is more than 20% by weight, it is difficult to become nonflammable. On the other hand, when the content is less than 5% by weight, the bonding force (adhesive force) is small and the moldability is deteriorated.

As the magnetic particles to be contained in the magnetic layer 3, in addition to iron (γ-iron oxide is preferable because it hardly rusts and can maintain magnetic force), metals other than iron such as nickel, cobalt, manganese, chromium, and zinc, these non-ferrous metals An alloy of metals or an alloy of these non-ferrous metals and iron can be used.
The size of the magnetic particles is 20 to 200 μm, preferably about 30 to 100 μm, considering the difficulty of rusting and formability.

As the back decorative layer 5, for example, a paper material impregnated with melamine resin or phenol resin can be used.
As the paper material, for example, kraft paper having a weight of 70 to 150 g / m ² can be adopted, and this is impregnated with 60 to 150% by weight of melamine resin. If necessary, an arbitrary printed layer or the like can be formed on the surface.

Next, Table 1 shows the results of a test for confirming the magnetic adhesion force of the decorative board of the example of the present invention and the decorative board of the comparative example.
The layer structure of each decorative board was as follows in the decorative board in which five core material layers 2 and the back decorative layer 5 were pressed under the decorative layer 1.
Layer structure (a): One layer adjacent to the decorative layer 1 was the magnetic layer 3, and the remaining four layers were the inorganic material layer 4 (FIG. 1 (a)).
Layer structure (b): One layer adjacent to the decorative layer 1 and three layers adjacent to the back decorative layer 5 were used as the inorganic material layer 4, and one intermediate layer was used as the magnetic layer 3 (FIG. 1 (b)).
Layer structure (c): Three layers adjacent to the decorative layer 1 were used as the magnetic layer 3, and the remaining two layers were used as the inorganic material layer 4 (FIG. 1 (c)).
Layer structure (d): All the layers of the core material layer 2 were made into the magnetic layer 3 (FIG.1 (d)).
Here, the addition amounts (parts by weight) of the magnetic particles, the inorganic aggregate, and the thermosetting resin in each magnetic layer 3 and the inorganic material layer 4 are as shown in Table 1.
Then, in order to evaluate the magnetizing force of each decorative board, a commercially available magnet (square bar-shaped magnet (4 × 8 × 200 mm)) was used to confirm how many sheets of A4 size paper can be held.

As apparent from the test results shown in Table 1, the decorative board of this example is formed by laminating the magnetic layer 3 containing magnetic particles adjacent to the decorative layer 1 as a core layer. A magnet such as a hook with a magnet can be firmly attached to the surface.
In this case, when the magnetic layer 3 contains 30 to 90% by weight of magnetic particles, a magnet such as a hook with a magnet can be more suitably magnetized on the surface of the decorative board.
Further, the core material layer 2 disposed on the back side of the decorative layer 1 is composed of the magnetic layer 3 and the inorganic material layer 4 that does not contain magnetic particles, thereby making the decorative plate nonflammable. A magnet such as a hook with a magnet can be magnetically attached to the surface.
Moreover, a more suitable nonflammable decorative board can be obtained when the inorganic material layer 4 contains 60 to 90% by weight of the inorganic aggregate.
Further, the core layer 2 includes a glass nonwoven fabric containing an inorganic aggregate and impregnated with a thermosetting resin. By containing 30 to 90% by weight of magnetic particles, a hook with a magnet is formed on the surface. It is possible to obtain a non-combustible decorative board on which a magnet such as a magnet is magnetically attached.

  As described above, the decorative board of the present invention has been described based on the examples thereof. However, the present invention is not limited to the configurations described in the above examples, and the gist of the present invention includes, for example, appropriately combining the configurations described in the examples. The configuration can be changed as appropriate without departing from the scope of the invention.

  Since the decorative board of the present invention has a property of magnetizing a magnet such as a hook with a magnet on the surface of the decorative board, it can be suitably used for, for example, a non-combustible decorative board in a kitchen.

A decorative board is shown, (a), (c), (d) and (e) show the layer structure of the Example of this invention, (b) shows the layer structure of a comparative example.

1 decorative layer 2 core material layer 3 magnetic layer 4 inorganic material layer 5 back decorative layer

Claims (3)

In a decorative board having a decorative layer on the surface of the core layer , 30 to 90% by weight of a decorative layer formed by impregnating 60 to 150% by weight of melamine resin on a kraft paper weighing 70 to 150 g / m ² is used. A magnetic layer containing a glass nonwoven fabric impregnated so as to contain 60 to 90% by weight of an inorganic aggregate containing magnetic particles and 5 to 20% by weight of a thermosetting resin is laminated as a core layer. A decorative board characterized by comprising. The core layer disposed on the back side of the decorative layer, a magnetic layer and, veneer according to claim 1, characterized by being constituted by the inorganic layer containing no magnetic particles. Inorganic layer, while containing the inorganic aggregate 60-90% by weight, the thermosetting resin according to claim 2, characterized in that it comprises a glass nonwoven fabric impregnated as contained 5 to 20 wt% Decorative board.

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