JP7054841B2 - Building materials - Google Patents

Description

The present invention is a building material provided with a core material, a wood-based base material bonded to substantially the entire surface of two adjacent surfaces via corners of the core material, and a veneer laminated on the surface of the wood-based base material. Regarding.

Conventionally, as a surface decorative material, a material having a two-layer structure in which a veneer is bonded to an inexpensive wood-based base material may be used. However, with this type of surface decorative material, when a thin veneer is used, two layers may be exposed on the chamfered portion formed at the corner, and the design may not be excellent. ..

On the other hand, as a technique for manufacturing a surface decorative material, a folding groove is provided on the back surface of a wood-based base material which is a constituent base material of the surface decorative material, and the chamfered portion is formed by bending the bending groove. Various things have been proposed (see, for example, Patent Document 1).

In the prior art described in this document and the like, even if the surface decorative material has a two-layer structure, there is no possibility that the two layers will be exposed on the surface.

Japanese Patent Application Laid-Open No. 2003-80506

By the way, in the above-mentioned literature technology, the pattern of the veneer appears on the entire two adjacent surfaces including the chamfered portion, and it is possible to express a unified design. However, in the same literature technology, it is not possible to express that one veneer is used on one side. In particular, there is a demand for building materials that can be expressed by exposing the appearance of the top surface and the chamfered portion, as in the case where a thick veneer with a design is used for the entrance stile and the like.

The present invention has been proposed in consideration of such circumstances, and an object thereof is to provide a building material that can be expressed as if a thick veneer is used on the surface portion of one surface adjacent to the chamfered portion. There is something in it.

In order to achieve the above object, the building material of the present invention is laminated on the surface of the core material, the wood-based base material bonded to two adjacent surfaces via the corners of the core material, and the surface of the wood-based base material. A building material provided with a thrust plate, the wood-based base material is made by bending a flat plate having a folding groove formed on the back surface in the valley folding direction with the folding groove, and the wood base material is bent. The inner surface of the bent portion is adhered to the core material so as to be applied to the corner portion, and the chamfered portion is formed on the outer surface of the bent portion. It is provided with an integrated main body thrust plate that continuously covers one surface adjacent to the chamfering portion, a separation thrust plate that covers the other surface adjacent to the chamfered portion of the wood-based base material, and the thrust plate. A transparent film sheet is attached to the surface side of the surface, and a transparent resin layer made of a transparent resin material is formed between the thrust plate and the film sheet, and the film sheet is attached to the transparent resin layer. On the other hand, it is adhered with a transparent adhesive, and the transparent resin material permeates at least the surface layer portion of the thrust plate to expose a wet color on the surface of the building material .

According to the building material of the present invention, since it has the above-mentioned structure, it can be expressed as if a thick veneer is used on the surface portion of one of the surfaces adjacent to the chamfered portion.

It is a schematic vertical sectional view of the building material which concerns on one Embodiment of this invention. It is a schematic vertical sectional view showing the layer structure of the surface decorative material used for the building material separated. It is explanatory drawing of the surface decorative material used for the building material. (A) is a schematic view corresponding to a vertical sectional view and a plan view of the surface decorative material, (b) is a vertical sectional view showing a state in which the surface decorative material is bent, and (c) corresponds to (b). It is a plan view.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, the schematic configuration of the building material 30 will be described with reference to FIG.

The building material 30 includes a core material 31, a wood-based base material 11 bonded to two adjacent surfaces via a corner portion 31a of the core material 31, and a veneer 13 laminated on the surface of the wood-based base material 11. It is said to be a building material equipped with. Here, the wood-based base material 11 is formed by bending a flat plate having a folding groove 18 (see FIGS. 2 and 3) formed on the back surface in the folding groove 18 in the valley folding direction. The surface decorative material 10 is adhered to the core material 31 so that the inner surface of the bent portion 19 is applied to the corner portion 31a, and the chamfered portion 21 is provided on the outer surface of the bent portion 19. It is formed. The veneer 13 is formed on one surface 11b adjacent to the chamfered portion 11a of the wood-based base material 11, an integrated main body veneer 13a that continuously covers the chamfered portion 11a, and the chamfered portion 11a of the wood-based base material 11. It is provided with a separating veneer 13b that covers the other adjacent surface 11c.

Then, in addition to FIG. 1, the configuration of the building material 30 will be described in detail with reference to FIGS. 2 and 3. The building material 30 shown in FIG. 1 is used as a stile, particularly as a front door stile.

The surface decorative material 10 attached to the building material 30 has a layered structure as shown in FIG. That is, the surface decorative material 10 includes a wood-based base material 11, a veneer 13 arranged on the surface thereof, a transparent resin layer 14 arranged on the surface thereof, and a transparent material 14 arranged on the surface thereof. The film sheet 16 is provided.

The wood-based base material 11 is a plate-like material forming the base material of the surface decorative material 10, and in the present embodiment, it is composed of a medium density fiberboard (MDF). In order to form the surface decorative material 10 at low cost, it is desirable to include MDF as the material of the wood-based base material 11 in this way. Of course, the wood-based base material 11 may be made of another material, or may have a layered structure made of a plurality of materials.

As the veneer 13, a veneer made of a single sliced veneer is used, and for example, a veneer having a thickness of about 0.25 mm may be used. The veneer 13 obtained by slicing laminated lumber may be used. As described above, the veneer 13 is composed of two separated veneers 13a and 13b having substantially the same thickness. One is a main body veneer 13a arranged on the top surface 11b side and covers the top surface 11b, and the other is a separation veneer 13b that covers the side surface 11c.

A transparent resin material, which is a material for forming the transparent resin layer 14, has penetrated into at least the surface layer portion of each of the veneers 13a and 13b. This resin permeation portion is formed by applying a transparent resin material when the surface decorative material 10 is manufactured. It is desirable that the transparent resin layer 14 and the resin permeation portion are formed on both the main body veneer 13a and the separation veneer 13b in order to express a unified design, but on the other hand, such as a more conspicuous surface. It may be formed only for.

This transparent resin material not only permeates the veneers 13a and 13b, but also fills the fine uneven recesses on the surfaces of the veneers 13a and 13b to form the transparent resin layer 14. Examples of the transparent resin material include ultraviolet curable acrylic urethane, but the present invention is not limited to this, and a thermosetting type may be used. The transparent resin material may be translucent, transparent or translucent including color, and can be expressed by transmitting at least the surface pattern of the veneer 13. All you need is.

As the film sheet 16, a transparent polypropylene resin sheet having a thickness of, for example, about 0.7 mm may be used. The present invention is not limited to this, and those made of resin such as polystyrene and vinyl chloride may be used. The film sheet 16 is coated with a polyurethane adhesive and adhered onto the transparent resin layer 14. Therefore, it is necessary to select both the adhesive 17 of the film sheet 16 to be adhered on the transparent resin layer 14 and the transparent resin material in consideration of their mutual adhesiveness. Needless to say, it is also desirable that the layer made of the adhesive 17 be transparent. The adhesive 17 is shown in FIG. 2, but the adhesive 17 as a layer is not shown in FIGS. 1 and 3.

Since the transparent resin layer 14, the adhesive layer, and the film sheet 16 arranged on the surface side of the surface decorative material 10 are all transparent, the wood grain pattern on the surface of the veneer 13 is the surface pattern of the surface decorative material 10. , Exposed to the appearance as a surface color.

The front surface decorative material 10 is formed with a bending groove 18 (shown by a broken line in FIG. 2) composed of two continuous V-grooves 18a and 18b via a triangular portion 18c (shown by a broken line in FIG. 2) on the back surface. ing. The shape of the folding groove 18 is not limited to that shown in FIG. 2, and the chamfered portion 21 as shown in FIG. 1 is formed on the surface by bending the bending groove 18. Any shape may be used.

Here, one V-groove 18a is for forming a surface bending boundary 21a between the surface 22 (top surface 22) exposed upward in FIG. 1 and the chamfered portion 21 by bending the surface decorative material 10. Is. The other V-groove 18b is for forming a surface bending boundary 21b between the side-exposed surface 23 (side surface 23) and the chamfered portion 21 in FIG. 1 by bending the surface decorative material 10. be.

The bending groove 18 may be such that both side portions are connected via the folding groove 18, that is, a groove that does not reach the film sheet 16 as described above. Conversely, since the film sheet 16 is provided on the surface decorative material 10, a deep bending groove 18 can be formed on the back surface of the film sheet 16 so as to be closer to the film sheet 16. The bending groove 18 is preferably a deep groove connected only by the film sheet 16 from the viewpoint of bendability, but in order to prevent the veneer 13 from easily forming a gap, it is desirable. It is desirable that it does not reach the veneer 13 as shown in the figure.

Since such a bending groove 18 is formed in the surface decorative material 10, it can be easily attached as a decorative material that covers the core material 31 (see FIG. 1) whose surfaces are adjacent to each other via the corner portion 31a. be able to.

Further, according to the surface decorative material 10, since the transparent resin material permeates the surface layer portion of the veneer 13, the surface of the surface decorative material 10 gets wet via the transparent resin layer 14 and the transparent film sheet 16. It is possible to express a subtle color that is different from the color and the original wood grain color. The wet color is a glossy color as if it is wet with water, and is expressed by the liquid transparent resin material entering the fine portion of the thrust plate 13 and then being cured in the manufacturing process. Further, the transparent resin material enters the fine recesses on the surface of the veneer 13 to form a transparent resin layer 14 such as a puddle, so that a delicate color different from the wet color and the original wood grain color is expressed. be able to.

The transparent resin layer 14 and the transparent resin material do not have to be completely colorless and transparent, and may contain a slight amount of color. By infiltrating such a colored material, the wood grain pattern may be left as it is, and the wood grain color may be changed to the color blended in the transparent resin material to expose the appearance.

Further, since the transparent resin material permeates the veneer 13, when the surface decorative material 10 is bent, the permeated and cured transparent resin material can suppress the occurrence of cracks in the veneer 13. .. Bending is particularly easy if a transparent resin material that exhibits high extensibility after permeation and curing is used. Further, by providing the bending groove 18 that does not reach the veneer 13, it is possible to further prevent the veneer 13 from cracking.

Further, a reinforcing sheet made of paper, a non-woven fabric, a resin sheet or the like may be laminated between the wood-based base material 11 and the veneer 13 to suppress the occurrence of cracks in the veneer 13. If a reinforcing sheet having a color similar to the surface color of the veneer 13 is used, even if the veneer 13 is cracked, the cracking can be made inconspicuous by the lower reinforcing sheet .

Next, how the main body veneer 13a and the separation veneer 13b appear on the surface of the surface decorative material 10 will be described with reference to FIG.

As described above, the two V-grooves 18a and 18b are for forming the chamfered portion 21 on the surface of the surface decorative material 10 (building material 30). As shown in the enlarged view of FIG. 3A, the main body veneer 13a is attached to the left side (one surface 11b of the wood-based base material 11 and the chamfered portion 11a) at a position corresponding to the groove tip of the V groove 18b. Has been done. The other separation veneer 13b is attached to the right side (the other surface 11c of the wood-based base material 11) at a position corresponding to the groove tip of the V groove 18b. Further, as shown in FIG. 3A, the surface patterns of the two types of veneers 13a and 13b can be made different from each other.

When such a surface decorative material 10 is bent in the valley folding direction at the bending groove 18, a chamfered portion 21 corresponding to a corner portion of the surface decorative material 10 is formed as shown in FIG. 3 (b). Since the two veneers 13a and 13b are adjacent to each other with the groove tip position of the V-groove 18b as a boundary, the seam 13c (aggregation position) of the veneer 13 is exposed at the boundary position between the chamfered portion 21 and the side surface 23. Further, in the surface decorative material 10 in the bent state, as shown in FIG. 3C, the pattern of only the main body veneer 13a is exposed on the top surface side.

Since such a surface decorative material 10 is used as a decorative material for the building material 10 (entrance stile), the same pattern can be displayed on the top surface 22 and the chamfered portion 21 of the entrance stile by the main body veneer 13a. , It can be expressed as if a thick veneer is used as the decorative material on the top surface 22 side. In the example of FIG. 1, it seems that a veneer having a thickness from the height position of the top surface 22 to the height position of the two-dot chain line is used as a decorative material.

Further, on the side surface 23 of the building material 10, the pattern of the separation veneer 13b different from that of the main body veneer 13a can express other wood texture and luxury feeling different from the top surface 22 side.

Further, if the transparent resin material permeates the surface layer portion of the veneer 13 (main body veneer 13a, separation veneer 13b), the surface of the veneer 13 can be made to express a wet color, further improving the design. Can be planned.

10 Surface decorative material 11 Wood-based base material 11a (in wood-based base material) chamfered part 11b (in wood-based base material) one side 11c (in wood-based base material) other side 13 veneer 13a Main body veneer (thrust) Board)
13b Separation veneer (veneer)
14 Transparent resin layer 16 Film sheet 17 Adhesive 18 Folding groove 18a, 18b V-groove 19 Folding part 21 (in building materials and surface decorative materials) Chamfering part 22 (in building materials and surface decorative materials) One side (top surface) )
23 The other side (side surface) (in building materials and surface decorative materials)
30 Building materials 31 Core materials 31a Corners

Claims (3)

It is a building material provided with a core material, a wood-based base material adhered to two adjacent surfaces via the corners of the core material, and a veneer laminated on the surface of the wood-based base material.
In the wood-based base material, a flat plate having a folding groove formed on the back surface is bent in the valley folding direction by the folding groove, and the inner surface of the bent portion is the corner. It is adhered to the core material so as to be applied to the portion, and a chamfered portion is formed on the outer surface of the bent portion.
The thrust plate is adjacent to one surface of the wood-based base material adjacent to the chamfered portion, an integrated main body thrust plate that continuously covers the chamfered portion, and the chamfered portion of the wood-based base material. It has a separation thruster that covers the other side,
A transparent film sheet is attached to the surface side of the thrust plate, a transparent resin layer made of a transparent resin material is formed between the thrust plate and the film sheet, and the film sheet is transparent. It is adhered to the resin layer with a transparent adhesive,
A building material characterized in that the transparent resin material permeates at least a surface layer portion of the veneer to expose a wet color on the surface of the building material. In claim 1,
A building material characterized in that the main body veneer is arranged on the top surface side and is used as a stile. In claim 1 or 2,
A building material characterized in that the bending groove is formed on the back surface side of the veneer so as not to reach the film sheet.

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