JP3396657B2 - Architectural decorative material and method for forming the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is constructed by adhering a decorative plate composed of a substrate having a rigidly formed non-flexible hard decorative layer on its surface to a core material which is a frame, And a method for forming the same, in which a curved decorative edge portion is formed on the bent portion of the decorative plate by bending the core material along the corners of the core material so as to form a curved surface Is.

[0002]

2. Description of the Related Art Conventionally, for decorative panels such as buildings and furniture, door panels, decorative frame materials, decorative products, etc., a decorative material for construction in which the surface and edge of a core material is covered with a decorative plate has been used. It is well known. As a decorative board, for example, a polyester decorative board (a decorative board obtained by sticking a printing paper on a substrate, coating and impregnating the surface of the printing paper with a polyester resin, and curing the resin) is used. After applying, the synthetic resin liquid is applied and impregnated and cured to form a non-flexible hard decorative layer, or as in the above case, printing paper is applied to the substrate and then the synthetic resin liquid is applied. A decorative board having a non-flexible hard decorative layer formed by applying a synthetic resin coating containing a pigment or a colorant and curing it, or a melamine decorative board or D
Like the AP decorative board, uncured impregnated paper, which is a printed paper impregnated with a resin such as melamine resin or DAP resin, is placed on the substrate, and it is pressed by heat to integrate and harden the impregnated paper to make it non-flexible There is a decorative board having a hard decorative layer formed thereon. The substrate is formed of plywood, fiberboard, particle board, or the like.

Then, as shown in FIG. 19, a plurality of back grooves 22 are engraved and folded on the back surface (the side opposite to the non-flexible hard decorative layer) of the decorative plate formed as described above. After forming a back groove for bending and applying an adhesive such as urethane resin or hot melt resin to the back groove, the back groove is attached to the decorative plate 4.
The curved decorative edge portion 2 was formed by bending the core material 3 along the corner portion to form a curved surface.

However, since the non-flexible hard decorative layer 6 of such a decorative plate 4 is poor in flexibility and bendability and is hard, when the curved edge processing is performed as described above, As shown in FIG. 19, in the curved decorative edge portion 2 of the architectural decorative material 1, strong unevenness or whitened streak pattern 21 occurs in the inflexible hard decorative layer 6 on the surface of the decorative plate 4,
There was a problem that the makeup appearance of the architectural decorative material 1 was remarkably impaired due to cracks. Therefore, in order to solve the above problem, a protrusion is formed on the groove bottom of the plurality of back grooves 22 formed on the back surface of the substrate 5 of the decorative plate 4, or the groove depth of the back grooves 22 located at both ends is increased. Sao central groove 2
There has been proposed a technique of performing at least one of shallower than 2.

[0005]

However, in the above-mentioned conventional technique, the effect is maintained for a while after the edge treatment of the curved surface of the decorative plate, but the effect fades with time due to the influence of the drying of the adhesive. It was found that the conventional problems such as strong unevenness, whitening streaks, and cracks occurred. The present invention has been made in view of the above circumstances, and an object thereof is a decorative plate having a non-flexible hard decorative layer that can prevent the generation of streak patterns and cracks on the curved decorative edge. The present invention provides a building decorative material and a method for forming the same.

[0006]

In order to achieve the above-mentioned object, in the invention of claim 1, the decorative plate composed of a substrate having a rigidly formed non-flexible hard decorative layer on its surface is a framework. The decorative edge is formed by adhering to the core material, and the decorative plate is bent along the corners of the core material so that the decorative plate has a curved edge. In the architectural decorative material in which is formed,
In the decorative plate, at the position corresponding to the curved decorative edge on the back surface thereof, a recess is formed by cutting at a depth that does not reach the inflexible hard decorative layer, and in the core material,
In the corner portion, a fitting convex portion that matches the inner peripheral shape formed by the concave portion when the decorative plate is bent to be curved along the corner portion of the core material is cut and it is characterized in that it is <br/> formed by. With this configuration, when the decorative plate is bent at the portion where the concave portion is formed, the non-flexible hard decorative layer at the position corresponding to the concave portion is not bent and a curved surface is continuously formed. Therefore, the appearance of the decorative board can be improved without causing strong irregularities or white streak patterns in the non-flexible hard decorative layer or forming cracks. Moreover, since the fitting convex portion supports the curved decorative edge of the decorative plate from the inside of the decorative plate, the strength of the curved decorative edge against external force can be increased.

According to the second aspect of the present invention, the decorative plate made of a substrate having a hard non-flexible hard decorative layer on its surface is bonded to a core material which is a frame, and In a method for forming a decorative cosmetic material for a building, in which a curved decorative edge portion is formed on a bent portion of a decorative plate by bending a decorative plate along a corner portion of the core material to be curved. In the decorative plate, at the position corresponding to the curved decorative edge on the back surface thereof, a recess is formed by cutting at a depth that does not reach the inflexible hard decorative layer, and in the core material, In the corner portion, a fitting convex portion that matches the inner peripheral shape formed by the concave portion when the decorative plate is bent to be curved along the corner portion of the core material is cut and it is characterized in that it is formed by. With such a configuration, claim 1
Similarly, when the decorative plate is bent at the portion where the concave portion is formed, the non-flexible hard decorative layer at the position corresponding to the concave portion is not bent, and since a curved surface is continuously formed, The non-flexible hard decorative layer does not have strong irregularities, whitened streak patterns, or cracks, and the appearance of the decorative sheet can be improved. Moreover, since the fitting convex portion supports the curved decorative edge of the decorative plate from the inside of the decorative plate, the strength of the curved decorative edge against external force can be increased.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First, with reference to FIG. 1 to FIG. 9, a construction decorative material 1 according to the present embodiment will be described. FIG. 1 is a side view showing the interior of the architectural decorative material 1, FIG. 2 is a side view of the decorative plate 4 before being bonded to the core material 3, and FIG. FIG. 5 is an enlarged side view of the vicinity of the curved decorative edge portion 2 in the case, FIG. 4 is a process diagram showing a manufacturing process of the decorative plate 4, and FIG. 5 is a cross section of the cutting tool 9 formed on the outer periphery of the disk 12. 6 is a side view of the core material 3, FIG. 7 is a process diagram showing a manufacturing process of the core material 3, and FIG. 8 is an upper cutting tool 13 formed on the outer periphery of the disk 16. 9 is a sectional view of the side cutting tool 17 formed on the outer periphery of the disk 20.

First, referring to FIG. 1, the architectural decorative material 1 is
A core material 3 which is a skeleton formed by laminating wood materials and the like;
The decorative plate 4 is formed by adhering to the surface thereof with an adhesive and integrated with the decorative plate 4, and a curved decorative edge 2 is formed at a corner of the decorative plate 4. As shown in FIG. 2, the decorative plate 4 has a non-flexible hard layer 6 formed on the surface of a substrate 5. The substrate 5 is formed from a wood fiber board such as a wood fiber board such as an MFD or a hard board, a plywood, an LVL, a particle board or a wood thin board.

As the non-flexible hard decorative layer 6, for example, a printed decorative paper on which a wood grain pattern or the like is printed is adhered to the surface of the substrate 5, and a non-flexible hard layer of polyester resin or the like after curing is applied thereon. After coating and impregnating with a resin solution for forming the resin solution, a resin solution cured or a printed decorative paper on which a wood grain pattern or the like is printed is attached to the surface of the substrate 5, and an acrylic resin, Urethane resin, etc. (if necessary, pigment, colorant,
A material prepared by mixing anti-wear materials such as alumina powder, a diluent, etc.) and then applying a synthetic resin coating to form a non-flexible hard layer and curing it, or on the surface of the substrate 5. ,
Melamine resin, DA on printed decorative paper with wood grain pattern etc.
A resin-impregnated paper which is impregnated with a synthetic resin liquid such as P resin and pre-cured is placed, and the resin-impregnated paper is integrated with the substrate 5 and cured, and the like can be used.

As the printed decorative paper, it is possible to use Japanese paper, titanium paper, etc. in addition to ordinary paper. Alternatively, after printing unprinted paper on the substrate 5, an arbitrary printed pattern may be formed on the substrate 5 by means of transfer or the like. Further, a decorative veneer may be used instead of the printed decorative paper. Further, the non-flexible hard decorative layer 6 may be further coated with an acrylic or urethane type top clear coating.

The decorative board 4 thus obtained is harder than a decorative sheet such as a vinyl chloride resin decorative sheet attached and hard to be scratched or stained, and has an excellent decorative appearance. If the decorative plate 4 is too thin, the strength will be insufficient, and if it is too thick, it will be difficult to form a curved surface. Therefore, the thickness is 1.0 to 6.0 mm, preferably 1.5 to 4. 0
It is preferable to form it to about mm.

Further, as shown in FIG. 2, recesses 7 are formed at two predetermined positions on the back surface of the decorative plate 4 to a depth that does not reach the inflexible hardened layer 6 on the surface of the decorative plate 4. , The depth of the recess 7 (in the present embodiment, the substrate 5
Is approximately the same as the wall thickness) and is formed in a shape corresponding to about half of a horizontally long ellipse formed with a radius R1 having substantially the same size. When the decorative plate 4 is attached to the core material 3,
As shown in FIG. 3, the portion where the recess 7 is formed is bent at an angle of 90 °, and the curved decorative edge portion 2 is formed at this bent portion. When the decorative plate 4 is bent as described above, as shown in FIG. 3, the concave portion 7 has a part (3/4 of the circumference) of a circle whose diameter D1 is almost twice the radius dimension R1. Will be configured. Therefore,
The width A of the recess 7 in FIG. 2 has a value of A≈πD1 / 4
It becomes + 2R1.

Next, the manufacturing process of the decorative plate 4 will be described with reference to FIGS. 4 and 5, and the decorative plate 4 will be described with reference to FIG.
The non-flexible hard decorative layer 6 is formed on the surface of the substrate 5 shown in FIG. 4 by the method described above, as shown in FIG. 4 (B), and then, as shown in FIG. It is manufactured by forming the concave portion 7. This recess 7
Is formed by cutting with the cutting edge portion 11 of the cutting tool 9 shown in FIG. This cutting tool 9 is formed by stacking the discs 12 shown in FIG. 5 (A) with the cutting blades 10 formed on the outer periphery thereof so that the left and right cutting blades 10 are alternately combined. . Disk 12
As shown in FIG. 5 (A), is inserted into a rotary shaft 12a of a machine tool (not shown), and is rotated as shown by an arrow when the rotary shaft 12a rotates. Specifically, the cutting tool 9 is rotated by rotating the disk 12 attached to the rotary shaft 12a, and the cutting plate 9 is rotated in a tangential direction of rotation with respect to the cutting edge 11 of the rotating cutting tool 9. By sending the surface of the substrate 4 on the substrate 5 side, the substrate 5 is cut by the cutting edge portion 11, and the recessed portion 7 shown in FIG. 4C is formed on the substrate 5 side of the decorative plate 4. As shown in FIG. 5A, one corner portion of the cutting blade 10 is formed by a curve having a radius R1, and this radius R1
Due to the corner portions, curved surfaces having a radius R1 are formed on both sides of the recess 7. Further, the width dimension A of the recess 7 is as shown in FIG.
Although it is determined by the width dimension B of the cutting tool 9 shown in (B), the width dimension B of the cutting tool 9 can be changed by adjusting the positions of the left and right cutting blades 10. By changing the width, the width dimension A of the recess 7 formed in the substrate 5 can be adjusted.

Next, the core material 3 will be described. As shown in FIG. 4, a part of a circle (about 3/4 of the circumference) is cross-sectionally formed at two corners on the right and left sides of the core material 3. The fitting convex portion 8 is projected. The fitting protrusion 8 is formed on the decorative edge 4 of the decorative plate 4 when the decorative plate 4 is bent along the corners of the core material 3 so as to be curved and bonded. The diameter D2 is substantially the same as the diameter D1 of the recess 7 after the decorative plate 4 is bent, because it matches the inside, that is, the inner peripheral shape formed by the recess 7.

The manufacturing process of the core material 3 will be described with reference to FIGS. 7 to 9. First, the upper portion of the core material 3 shown in FIG. 7A is replaced by the cutting edge portion of the upper cutting tool 13 shown in FIG. 15
By cutting with, the shaded portion shown in FIG. 7 (B) is cut and processed into the shape shown by the solid line in FIG. 7 (B). The upper cutting tool 13 has a structure in which a cutting blade 14 is formed on the outer circumference of a disk 16 and the disks 16 are stacked so that the left and right cutting blades 14 are alternately combined. As shown in FIG. 8, the disk 16 is inserted into a rotary shaft 16a of a machine tool (not shown), and rotates as the arrow indicates when the rotary shaft 16a rotates. Specifically, the upper cutting tool 13 is rotated by rotating the disk 16 attached to the machine tool, and the cutting edge 15 of the rotating upper cutting tool 13 is centered in the tangential direction of rotation. By sending out the upper part of the material 3, the upper part of the core material 3 is cut by the cutting edge portion 15 and processed into the shape shown by the solid line in FIG. 7 (B). At this time, the semi-circular protrusions formed on both sides of the upper portion of the core member 3 are the fitting protrusions 8
Is the upper part of the.

Further, since the upper cutting tool 13 is constructed by alternately combining the left and right cutting blades 14 as described above, the core to be processed by adjusting the positions of the left and right cutting blades 14 Width E according to width C of material 3
Can be changed. Therefore, the core material 3 having various width dimensions can be processed within the adjustment range of the width dimension E. Further, since the semicircular concave portions formed on both sides of the cutting edge portion 15 form the protrusion portions on both upper sides of the core material 3, the diameter thereof is the same as the diameter of the protrusion portion. Therefore, the fitting convex portion 8 has a diameter D2. In addition,
In FIG. 8, the cutting blades 14 of the upper cutting tool 13 are illustrated with only a pair of left and right cutting blades 14 below the rotary shaft 16a, but a plurality of cutting blades 14 around the rotary shaft 16a are provided on the outer periphery of the disk 16. The cutting blades 14 are radially formed.

Next, after the core material 3 is processed into the shape shown by the solid line in FIG. 7B, both sides of the core material 3 are cut by the cutting edge portions 19 of the side cutting tools 17 shown in FIG. , Fig. 7
The shaded portion shown in (C) is cut and processed into the shape shown by the solid line in FIG. 7 (C). The side cutting tool 17 is formed by forming a cutting blade 18 on the outer circumference of a disk 20 and stacking the disks 20 so that the upper and lower cutting blades 18 are alternately combined. The disk 20 is, as shown in FIG.
It is inserted through a rotary shaft 20a of a machine tool (not shown), and rotates as the arrow indicates when the rotary shaft 20a rotates. As a specific machining method, the side cutting tool 17 is rotated by rotating the disk 20 attached to the machine tool, and the rotating side cutting tool 1 is rotated.
By sending the lateral side of the core material 3 in the tangential direction of rotation to the blade edge portion 7 of No. 7, the lateral side of the core material 3 is cut by the blade edge portion 19 and processed into the shape shown by the solid line in FIG. 7 (C). To be done.

Further, in FIG. 9, a pair of side cutting tools 17
Are located close to each other, the distance between them can be freely changed. Therefore, not only can the distance be changed according to the width C of the core material 3, but also the cutting of the core material 3 can be performed. The depth of cut can be adjusted. Further, since the curved surface portion formed below the cutting edge portion 19 constitutes the lower portion of the fitting concave portion 8, its radius R
2 is 1/2 of the diameter D2 of the fitting recess 8. It should be noted that in FIG. 9, the cutting blade 18 of the side cutting tool 17 is illustrated only with a pair of upper and lower cutting blades 18 on one side of the rotary shaft 20a, but the rotary shaft 20a is provided on the outer periphery of the disk 20. A plurality of cutting blades 18 are radially formed with the center as the center.

However, by going through the above steps,
The fitting protrusions 8 are formed at the corners on both sides of the upper portion of the core material 3. In addition, in the above-mentioned embodiment, after cutting the upper portion of the core material 3 and then cutting the both sides, the present invention is not limited to such a shape, and the core material 3 can be formed into a desired shape. In that case, cutting may be performed in any order. For example, it may be one in which both sides of the core material 3 are cut and then both sides are cut, or one in which both sides of the core material 3 are separately cut and then the upper portion is cut and processed. Good. Alternatively, the upper cutting tool 13 and the side cutting tool 17 may be mounted on a multi-axis processing machine and the cutting may be performed by bonder processing that simultaneously performs the cutting of the upper portion and both sides of the core material 3.

The processing conditions for cutting the decorative plate 4 and the core material 3 vary depending on conditions such as the hardness of the work material and the finished state of the surface after processing. In this embodiment, the cutting tool is used. 9, the rotational speed of the upper cutting tool 13 and the side cutting tool 17, etc. is about 3000 rpm,
The feeding speed of the decorative plate 4 and the core material 3, that is, the work material is about 12
It is set to m / min. Also, in this cutting process, when the rotation speed of the tool is increased, the feed speed of the work material is also increased, and when the rotation speed of the tool is decreased, the feed speed of the work material is also reduced. To have.

Next, a method of manufacturing a decorative building material by using the decorative board 4 and the core 3 will be described. First, after applying an adhesive to the entire back surface of the decorative plate 4, the concave portions 7 at the two positions are fitted to the fitting convex portions 8 at the two positions while bending the decorative plate 4, respectively. The decorative plate 4 and the core 3 are also brought into contact with portions other than the convex portion 8, respectively. By curing the adhesive in this state, the concave portion 7 and the fitting convex portion 8 and the portions of the decorative plate 4 and the core material 3 other than the concave portion 7 are adhered to each other, and the curved decorative edge portion 2 is provided in the corner portion. The architectural decorative material 1 is formed. At this time, as the adhesive, it is desirable to use an adhesive having a high filling property such as urethane resin or hot-melt resin, which can fill and fill the gap between the decorative plate 4 and the core 3. Also, depending on the type of adhesive, in order to accelerate its curing,
Means such as heating, heating / pressurizing, and high frequency heating may be used.

The non-flexible hard decorative layer 6 formed on the surface of the decorative plate 4 has a high hardness depending on the type of resin used for forming the non-flexible hard decorative layer 6 and has a high hardness. There are various types ranging from low hardness to low hardness, but when bending the decorative plate 4 having the non-flexible hard decorative layer 6 having a relatively high hardness as described above, the decorative plate 4 is bent while being heated. It is desirable to process.

Further, in the above-mentioned embodiment, the fitting convex portion 8 formed at the corner portion of the core material 3 has a shape in which a part of a circle has a sectional shape. However, the present invention is not limited to this, and various shapes are conceivable. Hereinafter, other embodiments will be described. In addition, the parts having the same functions as those of the above-described embodiment,
The same reference numerals are given.

First, the fitting protrusions 8 formed at the corners of the core material 3 have the depth of the recesses 7 (in the illustrated embodiment, the thickness of the substrate 5 in the embodiment shown in FIG. 10B). (Approximately the same as the thickness) and a part of an ellipse formed with a radius R3 of approximately the same size is approximately 4
The shape may be inclined by 5 °. in this case,
As shown in FIG. 10 (A), the concave portion 7 formed on the decorative plate 4 has a trapezoidal shape having a curved surface with a radius R3 having substantially the same dimension as the depth of the concave portion 7 at inner corners on both sides. The architectural decorative material 1 including the decorative plate 4 and the core material 3
Has the configuration shown in FIG. When forming the concave portion 7 shown in FIG. 10 (A) on the decorative plate 4,
As shown in FIG. 11, a cutting tool 9 having a trapezoidal shape in which the cutting edge 11 has curved lines with a radius R3 at the corners on both sides of the upper portion is used. Further, when manufacturing the core material 3 shown in FIG. 10 (B), as shown in FIG. 12, a cutting edge portion having concave portions formed on both sides thereof as a part of a curve of radius R3 is formed. 15
Upper cutting tool 13 having a radius R3 at the upper corner
A cutting edge portion 19 composed of a vertical line and a slanted line connected by a curved line
A lateral cutting tool 17 having The recess 7
And the core material 3 are manufactured by the same method as the above-described processing method.

The fitting projection 8 formed at the corner of the core material 3 has a depth of the recess 7 at a part of the corner as shown in FIG. In (1), it may be formed in a square shape having a curve of radius R4 of approximately the same size as the thickness of the substrate 5). In this case, the concave portion 7 formed in the decorative plate 4 has a rectangular shape as shown in FIG. 13 (A), and the architectural decorative material 1 composed of the decorative plate 4 and the core material 3 is , As shown in FIG. 13 (C). In addition, the concave portion 7 shown in FIG.
In the case of forming a blade, as shown in FIG.
A cutting tool 9 having a linear shape is used. In addition, FIG.
When manufacturing the core material 3 shown in (B), as shown in FIG. 15, a cutting edge is formed on both sides of which a concave portion is formed with a part of the corner portion being a curve of radius R4. An upper cutting tool 13 having a portion 15 and a side cutting tool 17 having a cutting edge portion 19 having a vertical surface and a horizontal surface at the upper corner are used. The formation of the concave portion 7 and the production of the core material 3 are both performed by the same method as the above-described processing method.

Further, the fitting protrusion 8 formed at the corner of the core 3 has a depth of the recess 7 at both corners as shown in FIG. In the above, a rectangular shape having a curved surface with a radius R5 of almost the same size as the thickness of the substrate 5) may be formed over the upper portion of the core material 3. In this case, the concave portion 7 formed on the decorative plate 4 is
As shown in FIG. 16 (A), it becomes one elongated rectangular shape, and the architectural decorative material 1 composed of this decorative plate 4 and the core material 3 is as shown in FIG. 16 (C). Become. In addition,
When forming the concave portion 7 shown in FIG. 16 (A) on the decorative plate 4, a cutting tool 9 having a horizontally long blade edge 11 as shown in FIG. 17 is used. In the case of manufacturing the core material 3 shown in FIG. 16 (B), an upper portion having a horizontally long blade edge portion 15 in which curved lines having a radius R5 are formed at corners on both sides as shown in FIG. A cutting tool 13 and a side cutting tool 17 having a cutting edge portion 19 having a vertical surface and a horizontal surface at an upper corner portion are used. The formation of the concave portion 7 and the production of the core material 3 are both performed by the same method as the above-described processing method.

The architectural decorative material and the curved decorative edge forming method thereof according to the embodiment have been described above in detail, but in the present embodiment, the hard non-flexible hard decorative layer 6 is formed on the surface. The decorative plate 4 made of the substrate 5 is attached to the core material 3 which is a frame, and the decorative plate 4 is bent along the corners of the core material 3 so as to be curved. A decorative material for construction 1 in which a curved decorative edge 2 is formed on a bent portion of a decorative plate 4 by processing
In the decorative plate 4, a concave portion 7 is formed on the back surface thereof at a position corresponding to the curved decorative edge portion 2 at a depth that does not reach the inflexible hard decorative layer 6. Three
The fitting fits the inner peripheral shape formed by the recess 7 when the decorative plate 4 is bent along the corner of the core material 3 into a curved shape. It is characterized in that a compound convex portion 8 is formed. With this configuration, when the decorative plate 4 is bent at the portion where the concave portion 7 is formed, the non-flexible hard decorative layer 6 at the position corresponding to the concave portion 7 does not have a bend and is continuous. Since a curved surface is formed on the non-flexible hard decorative layer 6, the appearance of the decorative plate 4 can be improved without forming strong irregularities or white streak patterns 21 on the non-flexible hard decorative layer 6 or forming cracks. Further, since the fitting convex portion 8 supports the curved decorative edge portion 2 of the decorative plate 4 from the inside of the decorative plate 4, the strength of the curved decorative edge portion 2 against an external force can be increased.

Further, in the present embodiment, the decorative plate 4 made of the substrate 5 having the rigidly formed non-flexible hard decorative layer 6 on the surface is bonded to the core material 3 which is a frame. The architectural makeup in which the curved decorative edge portion 2 is formed in the bent portion of the decorative plate 4 by bending the decorative plate 4 along the corners of the core material 3 to form a curved surface In the method of forming the material 1, a concave portion 7 is formed on the decorative plate 4 at a position corresponding to the curved decorative edge portion 2 on the back surface thereof and to a depth that does not reach the inflexible hard decorative layer 6. The core member 3 has an inner corner formed by the concave portion 7 when the decorative plate 4 is bent along the corner portion of the core member 3 into a curved shape. It is characterized in that a fitting convex portion 8 matching the circumferential shape is formed. With this configuration, when the decorative plate 4 is bent at the portion where the concave portion 7 is formed, the non-flexible hard decorative layer 6 at the position corresponding to the concave portion 7 does not have a bend and is continuous. Since a curved surface is formed on the non-flexible hard decorative layer 6, there are strong irregularities and whitened streaks 21
The appearance of the decorative plate 4 can be improved without causing cracks or cracks. Also, the fitting protrusion 8
Since the curved decorative edge portion 2 of the decorative plate 4 is supported from the inside of the decorative plate 4, the strength of the curved decorative edge portion 2 against external force can be increased.

[0030]

As is apparent from the above description, according to the first aspect of the invention, a core material is used as a framework for a decorative plate made of a substrate having a hard, non-flexible hard decorative layer on its surface. And a curved decorative edge portion is formed in the bent portion of the decorative plate by bending the decorative plate along the corners of the core material so as to form a curved surface. In the decorative material for construction described above, a concave portion is formed by cutting on the decorative plate at a position corresponding to the curved decorative edge portion at a depth not reaching the inflexible hard decorative layer. The corner portion of the core material matches the inner peripheral shape formed by the recess when the decorative plate is bent along the corner portion of the core material into a curved shape. this the fitting convex portion is made form <br/> by cutting the The one in which the features. With this configuration, when the decorative plate is bent at the portion where the concave portion is formed, the non-flexible hard decorative layer at the position corresponding to the concave portion is not bent and a curved surface is continuously formed. Therefore, the appearance of the decorative board can be improved without causing strong irregularities or white streak patterns in the non-flexible hard decorative layer or forming cracks. Moreover, since the fitting convex portion supports the curved decorative edge of the decorative plate from the inside of the decorative plate, the strength of the curved decorative edge against external force can be increased.

According to the second aspect of the present invention, the decorative plate made of a substrate having a hard non-flexible hard decorative layer formed on the surface thereof is bonded to a core material as a frame, and In a method for forming a decorative cosmetic material for a building, in which a curved decorative edge portion is formed on a bent portion of a decorative plate by bending a decorative plate along a corner portion of the core material to be curved. In the decorative plate, at the position corresponding to the curved decorative edge on the back surface thereof, a recess is formed by cutting at a depth that does not reach the inflexible hard decorative layer, and in the core material, In the corner portion, a fitting convex portion that matches the inner peripheral shape formed by the concave portion when the decorative plate is bent to be curved along the corner portion of the core material is cut and it is characterized in that it is formed by. With such a configuration, claim 1
Similarly, when the decorative plate is bent at the portion where the concave portion is formed, the non-flexible hard decorative layer at the position corresponding to the concave portion is not bent, and since a curved surface is continuously formed, The non-flexible hard decorative layer does not have strong irregularities, whitened streak patterns, or cracks, and the appearance of the decorative sheet can be improved. Moreover, since the fitting convex portion supports the curved decorative edge of the decorative plate from the inside of the decorative plate, the strength of the curved decorative edge against external force can be increased.

[Brief description of drawings]

FIG. 1 is a side view showing the inside of a decorative building material.

FIG. 2 is a side view of a decorative plate before being bonded to a core material.

FIG. 3 is an enlarged side view of the vicinity of a curved decorative edge when the decorative plate is bent.

FIG. 4 is a process drawing showing a manufacturing process of a decorative board.

FIG. 5 is a cross-sectional view of a cutting tool formed on the outer circumference of a disk.

FIG. 6 is a side view of a core material.

FIG. 7 is a process drawing showing a manufacturing process of a core material.

FIG. 8 is a cross-sectional view of an upper cutting tool formed on the outer circumference of a disk.

FIG. 9 is a cross-sectional view of a side cutting tool formed on the outer circumference of a disk.

FIG. 10 is a side view showing the interior of a decorative board, a core member, and a decorative board for construction according to another embodiment.

FIG. 11 is a front view of a cutting tool according to another embodiment.

FIG. 12 is a front view of an upper cutting tool and a side cutting tool according to another embodiment.

FIG. 13 is a side view showing the interior of a decorative board, a core material, and a decorative board for construction according to another embodiment.

FIG. 14 is a front view of a cutting tool according to another embodiment.

FIG. 15 is a front view of an upper cutting tool and a side cutting tool according to another embodiment.

FIG. 16 is a side view showing the interior of a decorative board, a core material, and a decorative board for construction according to another embodiment.

FIG. 17 is a front view of a cutting tool according to another embodiment.

FIG. 18 is a front view of an upper cutting tool and a side cutting tool according to another embodiment.

FIG. 19 is a perspective view showing the inside of a conventional architectural decorative board.

[Explanation of symbols]

1 Decorative material for construction 2 curved edge 3 core material 4 Veneer 5 substrates 6 Non-flexible hard decorative layer 7 recess 8 Fitting convex part 9 cutting tools 10 cutting blades 11 cutting edge 12 disks 12a rotating shaft 13 Upper cutting tool 14 cutting blade 15 Cutting edge 16 discs 16a rotating shaft 17 side cutting tools 18 cutting blade 19 cutting edge 20 discs 20a rotating shaft 21 streak pattern 22 Back groove

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI E04C 2/30 E04C 2/30 D W

Claims (2)

(57) [Claims] 1. A constitution is obtained by adhering a decorative plate made of a substrate having a rigidly formed non-flexible hard decorative layer on its surface to a core material that is a framework, and the decorative plate is provided at a corner of the core material. In a decorative material for architecture in which a curved decorative edge portion is formed in a bent portion of a decorative plate by bending so as to form a curved surface along a corner, the decorative plate has a back surface thereof. At a position corresponding to the curved decorative edge, a recess is formed by cutting at a depth that does not reach the non-flexible hard decorative layer, and the core material has a core with the decorative plate at a corner. When the bending process is performed along the corner portion of the material so as to form a curved surface, the fitting convex portion that matches the inner peripheral shape formed by the concave portion is formed.
A decorative material for construction, which is formed by cutting . 2. A constitution is obtained by adhering a decorative plate made of a substrate having a rigidly formed non-flexible hard decorative layer on its surface to a core material that is a framework, and the decorative plate is provided at a corner of the core material. In the method for forming a decorative material for construction, in which a curved decorative edge is formed in a bent portion of a decorative plate by bending the curved surface along a corner, the decorative plate has a back surface thereof. In the position corresponding to the curved decorative edge, a concave portion is formed by cutting at a depth that does not reach the inflexible hard decorative layer, the core material, in the corner portion, the makeup. When the plate is bent along the corners of the core material so as to have a curved surface, a fitting convex portion that matches the inner peripheral shape formed by the concave portion is formed.
A method for forming a decorative building material, which is formed by cutting .