JP2001315105A - Facing material for building and its forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facing material for building made of a facing plate having a nonflexible hard facing layer capable of preventing a rib pattern and a crack from bring generated at a curved facing edge part while its forming method is provided. SOLUTION: On the facing plate 4, a dent part 7 is formed by a depth not reaching the nonflexible hard facing layer 6 at a position corresponding to a curved face-like facing edge part being on its rear surface. For its core material 3, a fitted projected part 8 conforming to an inner peripheral shape formed by the dent part 7 when the facing plate 4 is folded so as to form a curved face state along the corner part of the core material 3, is formed. Therefore, when the facing plate 4 is folded at a part wherein the dent part 7 is formed, a curvature is not generated to a nonflexible hard facing layer 6 at a position corresponding to the dent part 7, and a curved face is continuously formed. Then, an intensive irregular state and a whitened rib pattern are neither generated in the nonflexible hard facing layer 6, nor a crack is formed. An appearance of the facing plate 4 can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a decorative plate comprising a substrate having a hard non-flexible hard decorative layer formed on a surface thereof, and a decorative plate formed by bonding the decorative plate to a skeleton core material. And a method of forming the same, by forming a curved decorative edge at a bent portion of a decorative board by bending the core material into a curved surface along a corner of the core material, and a method of forming the same. It is.

[0002]

2. Description of the Related Art Conventionally, for decorative panels, door panels, decorative frame materials, decorative work materials and the like of buildings and furnitures, decorative materials for construction in which the surface and edges of a core material are covered with decorative plates have been used. Generally well known. As a decorative board, for example, a polyester decorative board (printed paper is pasted on a substrate, a polyester resin is applied to the surface of the printed paper and impregnated with the resin, and the resin is hardened) is printed on the substrate. After sticking, a synthetic resin liquid is applied and impregnated and cured, and a decorative sheet having a non-flexible hard decorative layer formed thereon, or in the same manner as described above, a printing paper is adhered to the substrate, A decorative board on which a non-flexible hard decorative layer is formed, or a melamine decorative board or D
An uncured impregnated paper made by impregnating a resin such as a melamine resin or a DAP resin into a printing paper, such as an AP decorative board, is placed on a substrate and integrated by heat and pressure, and the impregnated paper is cured to be inflexible There is a decorative plate on which a hard decorative layer is formed. The substrate is formed of plywood, fiber board, particle board, or the like.

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

However, the non-flexible hard decorative layer 6 of the decorative board 4 has poor flexibility and flexibility and is hard. As shown in FIG. 19, in the curved decorative edge 2 of the decorative material for construction 1, strong irregularities or whitened streaks 21 are formed on the non-flexible hard decorative layer 6 on the surface of the decorative plate 4.
There was a defect that the cosmetic appearance of the architectural decorative material 1 was significantly impaired due to cracks or the like. Therefore, in order to solve the above problem, a projecting portion is formed at the 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. The back groove 2 at the center
A technique of performing at least one of shallower than 2 has been proposed.

[0005]

However, in the above-mentioned prior art, the effect is maintained for a while after the curved edge of the decorative plate is processed, but the effect is weakened with the lapse of time due to the influence of drying of the adhesive and the like. It has been found that conventional inconveniences such as strong irregularities, whitened streak patterns, and cracks occur. The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a decorative plate having a non-flexible hard decorative layer capable of preventing generation of streaks or cracks at a curved decorative edge thereof. And a method of forming the same.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a decorative plate comprising a substrate having a hard non-flexible hard decorative layer on its surface is used as a framework. The decorative board is formed by bonding to a core material, and the decorative board is bent into a curved shape along a corner of the core material to form a curved decorative edge on a bent portion of the decorative board. In the building decorative material in which is formed,
A concave portion is formed on the back surface of the decorative plate at a position corresponding to the curved decorative edge portion at a depth that does not reach the non-flexible hard decorative layer. In the department,
When the decorative plate is bent so as to be curved along the corner of the core material, a fitting convex portion that matches an inner peripheral shape formed by the concave portion is formed. Is what you do. 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 does not have a bend, and a curved surface is continuously formed. Therefore, the appearance of the decorative board can be improved without strong unevenness or whitened streak pattern being generated on the non-flexible hard decorative layer, or cracking. Further, 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 formed of a substrate having a hard non-flexible hard decorative layer on its surface is bonded to a core material serving as a skeleton. In a method of forming a decorative decorative material for a building, a curved decorative edge is formed at a bent portion of the decorative plate by bending the decorative plate so as to be curved along the corner of the core material. A concave portion is formed on the back surface of the decorative plate at a position corresponding to the curved decorative edge portion at a depth that does not reach the non-flexible hard decorative layer. A fitting projection that matches the inner peripheral shape formed by the recess when the decorative board is bent so as to be curved along the corner of the core material; It is characterized by the following. With this configuration, similarly to the first aspect, when the decorative board 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. In addition, since the curved surface is continuously formed, the appearance of the decorative board can be improved without strong irregularities or whitened streaks or cracks in the non-flexible hard decorative layer. Further, 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]

Embodiments of the present invention will be described below with reference to the drawings. First, a building decorative material 1 according to the present embodiment will be described with reference to FIGS. FIG. 1 is a side view showing the interior of the decorative material for construction 1, FIG. 2 is a side view of the decorative plate 4 before being bonded to the core material 3, and FIG. FIG. 4 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. FIG. 6 is a side view of the core 3, FIG. 7 is a process diagram showing a manufacturing process of the core 3, and FIG. 8 is an upper cutting tool 13 formed on the outer periphery of the disk 16. FIG. 9 is a cross-sectional view of the side cutting tool 17 formed on the outer periphery of the disk 20.

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

As the non-flexible hard decorative layer 6, for example, a printed decorative paper having a wood grain pattern or the like printed on the surface of the substrate 5 is adhered, and a non-flexible hard layer such as a polyester resin is cured from above. After applying and impregnating a resin solution for forming the resin solution, the cured resin solution, or a printed decorative paper having a woodgrain pattern or the like printed on the surface of the substrate 5 is adhered, and an acrylic resin, Urethane resin, etc. (if necessary, pigments, colorants,
Abrasive material such as alumina powder, a mixture prepared by mixing a diluent, etc.) and then cured by applying a synthetic resin paint that forms an inflexible hard layer after curing, or on the surface of the substrate 5 ,
Melamine resin, DA on printed decorative paper with wood grain pattern etc.
A resin-impregnated paper impregnated with a synthetic resin liquid such as a P resin and precured is placed, and the resin-impregnated paper integrated with the substrate 5 and cured can be used.

As the printing decorative paper, Japanese paper, titanium paper or the like can be used in addition to the usual ones. Alternatively, after printing unprinted paper on the substrate 5, an arbitrary printed pattern may be formed on the substrate 5 by means such as transfer. Further, a decorative veneer may be used in place of the printed decorative paper. Further, the non-flexible hard decorative layer 6 may be further coated with a top clear paint such as acrylic or urethane.

The decorative plate 4 obtained in this manner is harder than the one to which a decorative sheet such as a vinyl chloride resin decorative sheet is adhered, is less likely to be damaged or stained, and has an excellent decorative appearance. If the decorative board 4 is too thin, the strength is insufficient. On the other hand, if the decorative board 4 is too thick, it is difficult to form a curved surface. Therefore, the thickness is 1.0 to 6.0 mm, preferably 1.5 to 4.0 mm. 0
It is good to form it to about mm.

As shown in FIG. 2, concave portions 7 are formed at two predetermined positions on the back surface of the decorative plate 4 at a depth that does not reach the non-flexible hardened layer 6 on the surface of the decorative plate 4. The concave portion 7 has a depth equal to the depth of the concave portion 7 (in this embodiment, the substrate 5
(Which is almost the same as the thickness of the ellipse) is formed in a shape corresponding to about half of a laterally long ellipse formed with a radius R1 having substantially the same dimensions as the above. When this decorative board 4 is attached to the core material 3,
As shown in FIG. 3, the portion where the concave portion 7 is formed is bent at an angle of 90 °, and the curved decorative edge 2 is formed in the bent portion. When the decorative board 4 is bent as described above, the concave portion 7 forms a part (3/4 of the circumference) of the circle whose diameter D1 is almost twice the radius dimension R1 as shown in FIG. Configuration. Therefore,
The value of the width dimension A of the concave portion 7 in FIG.
+ 2R1.

Next, the manufacturing process of the decorative board 4 will be described with reference to FIGS. 4 and 5. FIG.
4B, a non-flexible hard decorative layer 6 is formed on the surface of the substrate 5 as shown in FIG. 4B by the above-described method, and then, at two places on the back side of the substrate 5 as shown in FIG. It is manufactured by forming the recess 7. This recess 7
Is formed by cutting with the cutting edge portion 11 of the cutting tool 9 shown in FIG. The cutting tool 9 has a configuration in which a cutting blade 10 is formed on the outer periphery of a disk 12 shown in FIG. 5 (A) and the disks 12 are overlapped so that the left and right cutting blades 10 are alternately combined. . Disk 12
Is inserted through a rotating shaft 12a of a machine tool (not shown) as shown in FIG. 5A, and rotates as shown by an arrow when the rotating shaft 12a rotates. Specifically, the cutting tool 9 is rotated by rotating the disk 12 attached to the rotating shaft 12a, and the decorative plate is rotated in a tangential direction of rotation with respect to the cutting edge 11 of the rotating cutting tool 9. By sending out the surface of the substrate 4 on the substrate 5 side, the substrate 5 is cut by the cutting edge portion 11, and the concave portion 7 shown in FIG. 4C is formed on the decorative plate 4 on the substrate 5 side. As shown in FIG. 5A, one corner of the cutting blade 10 is formed by a curve having a radius R1.
Are formed on both sides of the concave portion 7 with a radius R1. Further, the width dimension A of the recess 7 is shown in FIG.
The width B is determined by the width B of the cutting tool 9 shown in (B). The width 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 A of the recess 7 formed in the substrate 5 can be adjusted.

Next, the core member 3 will be described. As shown in FIG. 4, a part of a circle (about 3/4 of the circumference) is formed in a cross-sectional shape at two right and left corners of the core member 3. Are provided to protrude. When the decorative plate 4 is bent and bonded along the corners of the core member 3 so as to be curved along the corners of the core member 3, the fitting convex portion 8 forms the curved decorative edge 2 of the decorative plate 4. The diameter D2 is substantially the same as the diameter D1 of the concave portion 7 after the decorative plate 4 is bent, since it matches the inside, that is, the inner peripheral shape formed by the concave portion 7.

The manufacturing process of the core material 3 will be described with reference to FIGS. 7 to 9. First, the upper part of the core material 3 shown in FIG. Fifteen
7B, the hatched portion shown in FIG. 7B is cut, and is processed into the shape shown by the solid line in FIG. 7B. The upper cutting tool 13 has a configuration in which a cutting blade 14 is formed on the outer periphery of a disk 16 and the disks 16 are overlapped so that the left and right cutting blades 14 are alternately combined. As shown in FIG. 8, the disk 16 is inserted through a rotating shaft 16a of a machine tool (not shown), and rotates as the rotating shaft 16a rotates as indicated by an arrow. Specifically, the upper cutting tool 13 is rotated by rotating a disk 16 attached to the machine tool, and the center of the rotating upper cutting tool 13 is tangential to the cutting edge 15 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 15, and processed into a shape shown by a solid line in FIG. At this time, the semicircular protrusions formed on both sides of the upper portion of the core material 3 correspond to the fitting protrusions 8.
Constitute the upper part of.

Further, since the upper cutting tool 13 is formed by alternately combining the left and right cutting blades 14 as described above, by adjusting the positions of the left and right cutting blades 14, the core to be machined can be obtained. Width E according to width C of material 3
Can be changed. Therefore, the core members 3 having various widths can be processed within the adjustment range of the width E. Further, since the semicircular concave portions formed on both sides of the blade edge portion 15 form protrusions on both upper sides of the core material 3, the diameter is the same as the diameter of the protrusion. Therefore, the diameter D2 of the fitting projection 8 is obtained. In addition,
8, only a pair of left and right cutting blades 14 below the rotary shaft 16a are illustrated as the cutting blades 14 of the upper cutting tool 13, but a plurality of disks around the rotary shaft 16a The cutting blade 14 is formed radially.

Next, after processing the core material 3 into a shape shown by a solid line in FIG. 7B, both sides of the core material 3 are cut by a cutting edge 19 of a side cutting tool 17 shown in FIG. , FIG.
The hatched portion shown in FIG. 7C is cut and processed into the shape shown by the solid line in FIG. The side cutting tool 17 is formed by laminating a disk 20 having cutting blades 18 formed on the outer periphery thereof, so that the upper and lower cutting blades 18 are alternately assembled. 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 shown by an arrow when the rotary shaft 20a rotates. Specifically, 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 side of the core material 3 in the tangential direction of rotation to the blade edge portion 19 of FIG. 7, the side of the core material 3 is cut by the blade edge portion 19 and processed into a shape shown by a solid line in FIG. Is done.

FIG. 9 shows a pair of side cutting tools 17.
Are located close to each other, but the spacing can be freely changed, so that not only can the spacing be changed in accordance with 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. In addition, since the curved surface portion formed below the cutting edge portion 19 constitutes a lower portion of the fitting concave portion 8, its radius R
2 is の of the diameter D2 of the fitting recess 8. In FIG. 9, only a pair of upper and lower cutting blades 18 on one side of the rotating shaft 20 a are illustrated as the cutting blades 18 of the side cutting tool 17. And a plurality of cutting blades 18 are formed radially.

Thus, through the above steps,
The fitting projections 8 are formed at the corners on both sides of the upper part of the core material 3. In the above-described embodiment, an example in which the upper side of the core material 3 is cut and then both sides are cut is shown. However, the present invention is not limited to such an embodiment, and the core material 3 can be formed into a desired shape. If so, the cutting may be performed in any order. For example, even if it cuts both sides after cutting both sides of the core material 3, or cuts both sides of the core material 3 separately, and then cuts the upper part, Good. Alternatively, the upper cutting tool 13 and the side cutting tool 17 may be mounted on a multi-axis processing machine, and may be cut by bonder processing for simultaneously cutting the upper 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 hardness of the work material and a finished state of the processed surface. In this embodiment, the cutting tool is used. 9, the rotation speed of the tools such as the upper cutting tool 13 and the side cutting tool 17 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
m / min. Also, in this cutting process, when the rotational speed of the tool is increased, the feed speed of the work material is also increased, and when the rotational speed of the tool is decreased, the feed speed of the work material is also decreased. Have.

Next, a method of manufacturing a decorative material for construction using the decorative plate 4 and the core material 3 will be described. First, after applying an adhesive to the entire back surface of the decorative plate 4, the concave portion 7 is fitted into the two convex portions 8 while the decorative plate 4 is bent. The decorative board 4 and the core material 3 are also brought into contact with the portions other than the convex portions 8 respectively. By curing the adhesive in this state, the concave portion 7 and the fitting convex portion 8 and the decorative plate 4 and the core material 3 other than that portion are respectively bonded, and the curved decorative edge 2 is provided at the corner. 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 a urethane resin or a hot melt resin, which can fill the gap between the decorative plate 4 and the core material 3 and bond them. Also, depending on the type of adhesive, to accelerate its curing,
Means such as heating, heating and pressing, and high-frequency heating may be used.

The hardness of the non-flexible hard decorative layer 6 formed on the surface of the decorative board 4 varies depending on the type of resin used for forming the non-flexible hard decorative layer 6, and the high hardness To low hardness, but when the decorative board 4 having the inflexible hard decorative layer 6 having relatively high hardness is bent as described above, the decorative board 4 is bent while being heated. It is desirable to process.

In the above embodiment, the fitting projection 8 formed at the corner of the core member 3 has a part of a circle in cross section. However, the present invention is not limited to this, and various shapes can be considered, and other embodiments will be described below. Note that components having the same functions as those of the above-described embodiment include:
The same reference numerals are given.

First, the fitting projections 8 formed at the corners of the core material 3 have the depth of the recess 7 (the thickness of the substrate 5 in the illustrated embodiment) as shown in FIG. Part of an ellipse formed with a radius R3 of substantially the same size as
The shape may be inclined at 5 °. in this case,
As shown in FIG. 10A, the concave portion 7 formed in the decorative plate 4 has a trapezoidal shape having a curved surface with a radius R3 substantially the same as the depth of the concave portion 7 at inner corners on both sides. Architectural decorative material 1 composed of decorative plate 4 and core material 3
Has the configuration shown in FIG. In addition, when forming the recessed part 7 shown in FIG.
As shown in FIG. 11, a trapezoidal cutting tool 9 in which the cutting edge 11 has a curve with a radius R3 at both upper corners is used. In the case of manufacturing the core material 3 shown in FIG. 10 (B), a cutting edge portion is formed on both sides thereof, as shown in FIG. Fifteen
Cutting tool 13 having a radius R3 at the upper corner.
Cutting edge 19 consisting of a vertical line and an inclined line connected by the curve
Is used. The recess 7
The formation of the core material 3 and the production of the core material 3 are both performed in the same manner as the above-described processing method.

The fitting projection 8 formed at the corner of the core member 3 has a depth of the recess 7 at a part of the corner as shown in FIG. May be formed in a square shape having a curve of a radius R4 having substantially the same dimensions as the thickness of the substrate 5). In this case, the concave portion 7 formed in the decorative board 4 has a rectangular shape as shown in FIG. 13A, and the architectural decorative material 1 composed of the decorative board 4 and the core 3 is 13 (C). In addition, the concave portion 7 shown in FIG.
Is formed, the cutting edge 11 as shown in FIG.
A cutting tool 9 having a linear shape is used. FIG.
When manufacturing the core material 3 shown in (B), a cutting edge is formed on both sides thereof, as shown in FIG. 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 an upper corner portion are used. The formation of the concave portion 7 and the manufacture of the core material 3 are both performed by the same method as the above-described processing method.

The fitting projections 8 formed at the corners of the core material 3 have the depths of the recesses 7 at the corners on both sides as shown in FIG. May be formed over the upper part of the core material 3 in a square shape having a curved surface with a radius R5 having substantially the same dimensions as the thickness of the substrate 5). In this case, the concave portion 7 formed in the decorative board 4 is
As shown in FIG. 16 (A), it becomes one elongated rectangular shape, and the architectural decorative material 1 composed of the decorative plate 4 and the core material 3 is different from that shown in FIG. 16 (C). Become. In addition,
When the concave portion 7 shown in FIG. 16A is formed in 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. 16B, an upper portion having a horizontally long cutting edge portion 15 in which a curve having a radius R5 is formed at both corners as shown in FIG. A cutting tool 13 and a side cutting tool 17 having a cutting edge 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 manufacture of the core material 3 are both performed by the same method as the above-described processing method.

The construction decorative material and the method for forming the curved decorative edge according to the embodiment have been described in detail above. In the present embodiment, however, the hard non-flexible hard decorative layer 6 is formed on the surface. The decorative plate 4 made of the substrate 5 is bonded to the core material 3 serving as a skeleton, and the decorative plate 4 is bent along the corners of the core material 3 so as to be curved. Architectural decorative material 1 in which curved decorative edge 2 is formed at the bent portion of decorative plate 4 by processing
In the decorative plate 4, a concave portion 7 is formed at a position on the back surface thereof corresponding to the curved decorative edge portion 2 at a depth that does not reach the non-flexible hard decorative layer 6. 3
In the corner portion, when the decorative board 4 is bent into a curved shape along the corner portion of the core material 3, the fitting conforms to the inner peripheral shape formed by the concave portion 7. It is characterized in that a mating projection 8 is formed. With this configuration, when the decorative board 4 is bent at a portion where the concave portion 7 is formed, the non-flexible hard decorative layer 6 at a position corresponding to the concave portion 7 does not have a bend and is continuously formed. Since a curved surface is formed on the non-flexible hard decorative layer 6, the appearance of the decorative board 4 can be improved without strong irregularities or whitened streaks 21 being formed or cracks. In addition, since the fitting projection 8 supports the curved decorative edge 2 of the decorative panel 4 from the inside of the decorative panel 4, the strength of the curved decorative edge 2 against external force can be increased.

In the present embodiment, the decorative plate 4 composed of the substrate 5 having the hard non-flexible hard decorative layer 6 on the surface is bonded to the core material 3 serving as a skeleton. The decorative veneer 4 is formed into a curved shape along the corners of the core material 3 so that the decorative veneer 4 has a curved decorative edge 2 at a bent portion thereof. In the method of forming the material 1, the concave portion 7 is formed in the decorative plate 4 at a position corresponding to the curved decorative edge portion 2 at a depth that does not reach the non-flexible hard decorative layer 6 on the back surface thereof. When the decorative plate 4 is bent into a curved shape along the corner of the core material 3, the inside of the core material 3 is formed by the recess 7. It is characterized in that a fitting projection 8 conforming to the circumferential shape is formed. With this configuration, when the decorative board 4 is bent at a portion where the concave portion 7 is formed, the non-flexible hard decorative layer 6 at a position corresponding to the concave portion 7 does not have a bend and is continuously formed. Since a curved surface is formed on the non-flexible hard decorative layer 6, strong irregularities or whitened streaks 21
The appearance of the decorative board 4 can be improved without causing cracks or cracks. Also, the fitting projection 8
Will support the curved decorative edge 2 of the decorative panel 4 from the inside of the decorative panel 4, so that the strength of the curved decorative edge 2 against external force can be increased.

[0030]

As is apparent from the above description, according to the first aspect of the present invention, the core material which is a framework made of a decorative plate composed of a substrate having a hard non-flexible hard decorative layer on its surface is used. The decorative board is formed by bonding the decorative board to a curved surface along the corners of the core material, thereby forming a curved decorative edge at a bent portion of the decorative board. In the architectural decorative material to be made, in the decorative board, at a position corresponding to the curved decorative edge on the back surface, a concave portion is formed at a depth that does not reach the non-flexible hard decorative layer, In the core material, a fitting that matches the inner peripheral shape formed by the concave portion when the decorative board is bent into a curved shape along the corner portion of the core material at the corner thereof. It is characterized in that a convex portion is formed. 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 does not have a bend, and a curved surface is continuously formed. Therefore, the appearance of the decorative board can be improved without strong unevenness or whitened streak pattern being generated on the non-flexible hard decorative layer, or cracking. Further, 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 formed of a substrate having a hard non-flexible hard decorative layer on the surface is bonded to a core material serving as a skeleton. In a method of forming a decorative decorative material for a building, a curved decorative edge is formed at a bent portion of the decorative plate by bending the decorative plate so as to be curved along the corner of the core material. A concave portion is formed on the back surface of the decorative plate at a position corresponding to the curved decorative edge portion at a depth that does not reach the non-flexible hard decorative layer. A fitting projection that matches the inner peripheral shape formed by the recess when the decorative board is bent so as to be curved along the corner of the core material; It is characterized by the following. With this configuration, similarly to the first aspect, when the decorative board 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. In addition, since the curved surface is continuously formed, the appearance of the decorative board can be improved without strong irregularities or whitened streaks or cracks in the non-flexible hard decorative layer. Further, 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 the drawings]

FIG. 1 is a side view showing the interior of an architectural decorative material.

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

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

FIG. 4 is a process diagram showing a manufacturing process of the decorative board.

FIG. 5 is a sectional view of a cutting tool formed on the outer periphery of a disk.

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

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

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

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

FIG. 10 is a side view showing the interior of a decorative panel, a core material and a decorative panel 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 panel, a core material, and a decorative panel 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 panel, a core material, and the interior of a decorative panel 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 interior of a conventional decorative veneer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Architectural decorative material 2 Curved decorative edge 3 Core material 4 Decorative plate 5 Substrate 6 Non-flexible hard decorative layer 7 Concave part 8 Fitting convex part 9 Cutting tool 10 Cutting blade 11 Cutting edge part 12 Disk 12a Rotating shaft 13 Top cutting Tool 14 Cutting blade 15 Cutting edge 16 Disk 16a Rotating shaft 17 Side cutting tool 18 Cutting blade 19 Cutting edge 20 Disk 20a Rotating shaft 21 Stripe pattern 22 Back groove

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[Procedure amendment]

[Submission date] November 9, 2000 (200.11.
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a decorative plate comprising a substrate having a hard non-flexible hard decorative layer on its surface is used as a framework. The decorative board is formed by bonding to a core material, and the decorative board is bent into a curved shape along a corner of the core material to form a curved decorative edge on a bent portion of the decorative board. In the building decorative material in which is formed,
In the decorative plate, a concave portion is formed by cutting at a depth that does not reach the non-flexible hard decorative layer at a position corresponding to the curved decorative edge on the back surface thereof, and the core material includes:
At the corners, fitting projections that match the inner peripheral shape formed by the recesses when the decorative board is bent into a curved surface along the corners of the core material are 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 does not have a bend, and a curved surface is continuously formed. Therefore, the appearance of the decorative board can be improved without strong unevenness or whitened streak pattern being generated on the non-flexible hard decorative layer, or cracking. Further, 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.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

According to the second aspect of the present invention, the decorative plate formed of a substrate having a hard non-flexible hard decorative layer on its surface is bonded to a core material serving as a skeleton. In a method of forming a decorative decorative material for a building, a curved decorative edge is formed at a bent portion of the decorative plate by bending the decorative plate so as to be curved along the corner of the core material. In the decorative plate, a concave portion is formed by cutting at a depth that does not reach the non-flexible hard decorative layer at a position corresponding to the curved decorative edge on the back surface thereof, and the core material includes: At the corners, fitting projections that match the inner peripheral shape formed by the recesses when the decorative board is bent into a curved surface along the corners of the core material are cut. and it is characterized in that it is formed by. With this configuration, claim 1 is achieved.
Similarly, when the decorative plate is bent at the portion where the concave portion is formed, the inflexible hard decorative layer at the position corresponding to the concave portion does not have a bend and a curved surface is continuously formed, The appearance of the decorative board can be improved without strong irregularities or whitened streaks or cracks in the non-flexible hard decorative layer. Further, 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.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

[0030]

As is apparent from the above description, according to the first aspect of the present invention, the core material which is a framework made of a decorative plate composed of a substrate having a hard non-flexible hard decorative layer on its surface is used. The decorative board is formed by bonding the decorative board to a curved surface along the corners of the core material, thereby forming a curved decorative edge at a bent portion of the decorative board. In the decorative decorative material to be made, a concave portion is formed in the decorative plate by cutting at a depth that does not reach the non-flexible hard decorative layer at a position corresponding to the curved decorative edge on the back surface thereof. The core material has an inner peripheral shape formed by the concave portion when the decorative board is bent into a curved shape along the corner portion of the core material at a corner thereof. 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 does not have a bend, and a curved surface is continuously formed. Therefore, the appearance of the decorative board can be improved without strong unevenness or whitened streak pattern being generated on the non-flexible hard decorative layer, or cracking. Further, 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.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction contents]

According to the second aspect of the present invention, the decorative plate formed of a substrate having a hard non-flexible hard decorative layer on the surface is bonded to a core material serving as a skeleton. In a method of forming a decorative decorative material for a building, a curved decorative edge is formed at a bent portion of the decorative plate by bending the decorative plate so as to be curved along the corner of the core material. In the decorative plate, a concave portion is formed by cutting at a depth that does not reach the non-flexible hard decorative layer at a position corresponding to the curved decorative edge on the back surface thereof, and the core material includes: At the corners, fitting projections that match the inner peripheral shape formed by the recesses when the decorative board is bent into a curved surface along the corners of the core material are cut. and it is characterized in that it is formed by. With this configuration, claim 1 is achieved.
Similarly, when the decorative plate is bent at the portion where the concave portion is formed, the inflexible hard decorative layer at the position corresponding to the concave portion does not have a bend and a curved surface is continuously formed, The appearance of the decorative board can be improved without strong irregularities or whitened streaks or cracks in the non-flexible hard decorative layer. Further, 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.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04C 2/30 E04C 2/30 D W

Claims (2)

[Claims] 1. A decorative plate comprising a substrate having a hard non-flexible hard decorative layer formed on a surface thereof is bonded to a core material serving as a skeleton, and the decorative plate is attached to a corner of the core material. A decorative decorative material for a building in which a curved decorative edge is formed at a bent portion of a decorative board by bending the decorative board into a curved shape along a corner, wherein the decorative board has a back surface. At a position corresponding to the curved decorative edge portion, a concave portion is formed at a depth that does not reach the non-flexible hard decorative layer, and at the corner portion of the core, the decorative plate is provided at the corner of the core material. An architectural decorative material, characterized in that a fitting convex portion that matches an inner peripheral shape formed by the concave portion when formed into a curved shape along a corner portion is formed. 2. A decorative plate comprising a substrate having a hard non-flexible hard decorative layer formed on a surface thereof is bonded to a core material serving as a skeleton, and the decorative plate is attached to a corner of the core material. In a method for forming a decorative decorative material for a building in which a curved decorative edge is formed in a bent portion of a decorative board by bending the decorative board so as to be curved along the corner, the decorative board has a back surface. A concave portion is formed at a position corresponding to the curved decorative edge portion at a depth that does not reach the non-flexible hard decorative layer, and the core is provided with the decorative plate at a corner thereof. And a fitting convex portion that matches an inner peripheral shape formed by the concave portion when the material is bent into a curved shape along a corner of the material. Formation method.