JP6723007B2 - Flooring - Google Patents

Description

The present invention relates to a flooring small grooves formed on its surface.

As this type of flooring material, for example, as shown in FIG. 12A, a composite board 50A is formed by attaching a natural decorative plank board material 52 to the upper surface of a wood base material 51 formed of plywood, As shown in FIG. 13B, the floor material 50 in which the narrow groove TV is formed in the portion of the natural decorative plank material 52 by cutting the surface of the composite board 50A, or as shown in FIG. 13A, A composite board 60A is formed by sequentially adhering a wood fiber board 62 and a natural decorative thin board material 63 onto the upper surface of a wood base material 61 formed by plywood, and as shown in FIG. There is a floor material 60 in which a thin groove TV is formed in a natural decorative thin plate material 63 and a wood fiber board 62 portion by cutting the surface of the above.

JP, 2003-191207, A JP, 2008-050896, A

By the way, in the above-mentioned floor material 50, since the thin groove TV is cut in the portion of the natural decorative plank plate material 52 formed of natural wood, the thin groove TV portion has the beauty of wood grain like solid wood. Although it has the advantage that it can be used, the natural decorative plank 52 made of natural wood has variations in strength, and when the furniture or chair with casters is used or heavy objects are dropped, the floor surface is dented. However, there is a drawback in that

On the other hand, in the above-mentioned floor material 60, since the hard wood fiberboard 62 is attached to the upper surface of the wood base material 61, the floor material is used even when using furniture or a chair with casters or dropping a heavy object. On the other hand, it has an advantage that the surface is not dented, but since the thin groove TV is machined in the natural decorative thin plate material 63 and the wood fiber board 62, wood grain does not appear in the narrow groove TV part and it is made of solid wood. It had the drawback that it could not have such a beautiful grain.

Therefore, an object of the present invention is to provide a flooring material in which the fine groove portion can have the beauty of wood grain like solid wood, and in which the surface is not likely to have a dent.

In order to solve the above-mentioned problems, the invention according to claim 1 has a V-shaped narrow groove formed on the surface, and a V-shaped narrow groove formed at the boundary with an adjacent floor material to be actually joined. As is formed, a floor material in which a narrow groove forming surface that is an inclined inner surface on one side of the narrow groove is formed in the peripheral portion, a wood base material made of plywood, and an upper surface of the wood base material. The natural decorative plank material having the groove part forming the narrow groove and the natural decorative plank material having an inclined surface forming the narrow groove forming surface, and the natural decorative plank material on the upper surface of the wood base material are attached. A wood fiberboard pasted on the upper surface of the wood base material in a state where the end face is abutted against the end face of the natural decorative plank material so as to cover the unbonded region, and the natural decorative plank material is formed. to exclude groove and the inclined surface, e Bei and the natural cosmetic planks and natural decorative sheet material adhered to the upper surface of the wood fiber board, natural cosmetic thick plate having a groove in the width direction of the groove The width of the narrow groove formed by the adjacent floor material to be actually joined is the narrow groove in the width direction of the narrow groove. Is set to 1/2 or more and 15 mm or less of the maximum width of the natural decorative plank, and the upper end of the natural decorative plank is wider than the lower end of the natural decorative plank. The floor material is characterized in that the end surface abutted with is shaped so as to follow the end surface shape of the natural decorative plank material.

In the invention according to claim 2, the V-shaped narrow groove is formed on the surface, and the V-shaped narrow groove is formed at the boundary with the adjacent floor material to be actually joined, A flooring material having a narrow groove forming surface, which is an inclined inner side surface on one side of the narrow groove, formed in the peripheral portion, and has a wood base material made of plywood and a fitting groove on the upper surface side, and is actually joined. A wood fiber board attached to the upper surface of the wood base material, having a notch on the upper surface side of the peripheral edge portion, and a groove portion forming the narrow groove on the upper surface side, and the fitting of the wood fiber board. A natural makeup plank material fitted in the groove and an inclined surface constituting the narrow groove forming surface are formed on the upper surface side of the peripheral portion to be actually joined, and the natural makeup fitted in the cutout portion of the wood fiber board. and thick plates, so as to eliminate the natural cosmetic thickness groove formed in the plate member and the inclined surface, e Bei and the natural cosmetic planks and natural decorative sheet material adhered to the upper surface of the wood fiber board, the groove The width of the groove portion in the width direction is not less than the maximum width of the narrow groove and not more than 30 mm, and the natural decorative plank material having the inclined surface is formed by an adjacent floor material that is actually joined. The width in the width direction of the narrow groove is set to 1/2 or more and 15 mm or less of the maximum width of the narrow groove, and the natural decorative plank material is formed such that the upper end is wider than the lower end. The inner surfaces of the fitting groove and the cutout portion of the wood fiber board are shaped so as to follow the widthwise end surface shape of the natural decorative plank material .

As described above, flooring of the invention according to claim 1 or 2, since the natural makeup thick plates has an inclined surface constituting the groove portion and the narrow groove formed surface constitutes a narrow groove, the narrow groove It is possible to give the part a beauty of wood grain like solid wood, and the width of the natural decorative plank material having the groove is not less than the maximum width of the narrow groove and not more than 30 mm, and the width of the natural decorative plank material having the inclined surface. Is set to 1/2 or more and 15 mm or less of the maximum width of the narrow groove, so the natural decorative thin plate material is lined with a high-hardness wood fiber board in the portion other than the periphery of the narrow groove and the narrow groove forming surface. As a result, even if furniture or a chair with casters is used, the dents are not conspicuous, and even if a heavy object falls, the dents are unlikely to be dented. Furthermore, regarding the natural decorative plank material, there is also an effect that the end material can be effectively used.

Further, in the flooring material of the invention according to claim 1 , the natural decorative plank material is formed such that the upper end portion is wider than the lower end portion, and the end surface of the wood fiberboard that is abutted against the end surface of the natural decorative plank material is The floor material of the invention according to claim 2 has a shape that conforms to the end face shape of the natural decorative plank material, and the natural decorative plank material is formed such that the upper end is wider than the lower end, The fitting groove and the inner side surface of the cutout portion in the fiberboard have a shape that follows the shape of the end face in the width direction of the natural decorative plank material. Since the thickness of the natural decorative plank is reduced in the part where the wooden fiber board is inserted, the thickness of the natural decorative plank is smaller than that of the natural decorative plank with the upper and lower ends having the same width. It is possible to obtain an effect that the outer portion of the narrow groove is hard to be recessed.

It is a top view showing one embodiment of the flooring material concerning this invention. 1A is a sectional view taken along line XX of FIG. 1, and FIG. 1B is a sectional view taken along line YY of FIG. (A)-(d) is a schematic process drawing for demonstrating the manufacturing method of the floor material same as the above. (A)-(e) is a schematic process drawing for demonstrating the other manufacturing method of the floor material same as the above. (A), (b) is sectional drawing which shows other embodiment. (A)-(e) is a schematic process drawing for demonstrating the manufacturing method of the flooring material same as the above. (A), (b) is sectional drawing which shows other embodiment. (A)-(d) is a schematic process drawing for demonstrating the manufacturing method of the floor material same as the above. (A)-(d) is sectional drawing which shows the modification of a natural decorative plank material, (e)-(h) is sectional drawing which shows the narrow groove part of the flooring which uses the same natural decorative plank material. It is sectional drawing which shows the modification of the narrow groove formed in the flooring material. It is a top view showing other embodiments of a flooring material. (A), (b) is a schematic sectional drawing for demonstrating the conventional flooring material and its manufacturing method. (A), (b) is a schematic sectional drawing for demonstrating the other conventional flooring material and its manufacturing method.

Hereinafter, embodiments will be described with reference to the drawings. As shown in FIGS. 1 and 2(a) and (b), this flooring material 1 was attached to a wood base material 11 made of 5-ply plywood and having a thickness of 9 mm, and an upper surface of the wood base material 11. It is composed of a surface layer material 12 having a thickness of 3 mm and a natural decorative thin plate material 16 having a thickness of 0.2 to 0.3 mm, which is attached to the upper surface of the surface layer material 12, one short side direction and one longitudinal direction. A male fruit is formed on the end face of the, and a female fruit is formed on the other end faces in the lateral direction and the longitudinal direction.

Further, on the surface of the floor material 1, a narrow groove TV having a V-shaped cross section extending in the longitudinal direction is formed in the center portion in the lateral direction, and the floor material 1 is laid while being actually joined. At this time, a narrow groove forming surface VS which is an inclined inner side surface on one side of the narrow groove is formed so that a similar narrow groove having a V-shaped cross section is formed at the boundary portion between the adjacent floor materials 1, 1. The narrow groove TV and the narrow groove forming surface VS are formed in a portion from the natural decorative thin plate material 16 to the surface layer material 12.

The surface layer material 12 has a width 10 mm having a groove portion 13a forming a narrow groove TV and a natural decorative plank plate material 13 having a thickness of 3 mm and a sloped surface 14a forming a narrow groove forming surface VS having a width of 5 mm and a thickness of 3 mm. The natural decorative plank material 14 and the natural decorative plank material 13 with its end faces abutting against the end surfaces of the natural decorative plank materials 13 and 14 so as to cover the regions other than the natural decorative plank materials 13 and 14 on the upper surface of the wooden base material 11. , 14 bonded to a medium quality fiberboard (MDF) 15, the natural decorative plank material 13 is at the center in the lateral direction of the surface layer material 12, and the natural decorative plank material 14 is the peripheral edge of the surface layer material 12. It is arranged in each section.

The natural decorative thin plate material 16 is a surface layer material in a state of being divided into two in the lateral direction so as to exclude the groove portion 13a formed in the natural decorative plank material 13 and the inclined surface 14a formed in the natural decorative plank material 14. 12 (natural decorative thick plate materials 13 and 14 and medium fiber board 15) are attached to the upper surface, and the peripheral end portions of each of them constitute an inclined surface 16a forming the narrow groove TV or a narrow groove forming surface VS. It has an inclined surface 16b.

The flooring material 1 configured as described above is manufactured as follows. First, as shown in FIG. 3A, the portion corresponding to the narrow groove TV is located in the natural decorative plank 13 and the portion corresponding to the narrow groove forming surface VS is located in the natural decorative plank 14. The surface layer material 12 is formed by abutting and joining the natural decorative thick plate materials 13 and 14 and the medium fiber board 15.

Then, as shown in FIG. 3B, after the surface layer material 12 is attached to the upper surface of the wood-based base material 11 made of plywood, the surface of the surface layer material 12 is smoothed by sanding. As shown in (), the natural decorative thin plate material 16 is attached to the upper surface of the surface layer material 12 to form the composite plate 10 in which the wood base material 11, the surface layer material 12 and the natural decorative thin plate material 16 are laminated.

Finally, as shown in FIG. 3D, the upper surface of the composite plate 10 is cut to form the narrow groove TV and the narrow groove forming surface VS, and then the surface of the natural decorative thin plate member 16 and the narrow groove are formed. The floor material 1 is completed by painting the surfaces of the TV and the narrow groove forming surface VS.

In this manufacturing method, the surface layer material 12 is formed in advance by joining the natural decorative plank materials 13 and 14 and the medium fiber board 15, but the invention is not limited to this and, for example, FIG. The flooring material 1 can also be manufactured by the methods shown in a) to (e). In this manufacturing method, first, as shown in FIG. 3A, a medium fiberboard 15 is attached to the upper surface of a wood base material 11 made of plywood, and as shown in FIG. The central portion in the widthwise direction including the portion corresponding to 10 mm is cut with a width of 10 mm, and the end portion including the portion corresponding to the narrow groove forming surface VS is cut with a width of 5 mm. The excised portions 15a and 15b that are completely excised are formed.

Subsequently, as shown in FIG. 3C, the cut portion 15a having a width of 10 mm and the natural decorative plank plate material 13 having a thickness of 3 mm are attached to the cut portion 15a having a width of 10 mm and the cut portion 15b having a width of 5 mm, respectively. By fitting the natural decorative planks 14 each having a thickness of 3 mm, the surface layer material 12 composed of the medium quality fiberboard 15 and the natural decorative planks 13 and 14 is formed on the wooden base material 11.

After that, the flooring 1 is manufactured through the same steps as the manufacturing method shown in FIG. That is, the surface of the surface layer material 12 is smoothed by sanding, and the natural decorative thin plate material 16 is attached to the upper surface of the surface layer material 12 as shown in FIG. The composite plate 10 in which the material 12 and the natural decorative thin plate material 16 are laminated is formed. Finally, as shown in FIG. 7E, the upper surface of the composite plate 10 is cut to form the narrow groove TV and the narrow groove forming surface VS, and then the narrow groove TV and the narrow groove forming surface VS are formed. The floor material 1 is completed by painting the formed upper surface.

5A and 5B show another embodiment. Since this floor material 1A has the same configuration as the floor material 1 described above except for the surface layer material 12A, the same components are designated by the same reference numerals, and the description thereof will be omitted. A certain surface layer material 12A will be described.

The surface layer material 12A is a medium-quality fiberboard 15A in which a fitting groove 15Aa having a width of 10 mm and a depth of 2 mm is formed in a center portion in the lateral direction, and a cutout portion 15Ab having a width of 5 mm and a depth of 2 mm is formed at a peripheral end portion. And a cutout portion of a natural decorative plank plate material 13A having a width of 10 mm and a thickness of 2 mm and having a groove portion 13Aa that constitutes a narrow groove TV and is fitted into the fitting groove 15Aa of the medium quality fiberboard 15A. Natural makeup with a width of 5 mm and a thickness of 2 mm, which has an inclined surface 14Aa forming the narrow groove forming surface VS, and a natural makeup plank material 14A fitted to the 15Ab. Different from the floor material 1 in which the surface layer material 12 is formed by abutting and joining a thick board material 13 and a natural decorative thick board material 14 having a width of 5 mm and a thickness of 3 mm and a medium quality fiberboard 14 having a thickness of 3 mm. ing.

Floor material 1A configured as described above is manufactured as follows. First, as shown in FIG. 6(a), a medium-quality fiberboard 15A is attached to the upper surface of a wooden base material 11 made of plywood, and as shown in FIG. 6(b), a portion corresponding to the narrow groove TV is formed. By including the center portion in the lateral direction including the width of 10 mm and the depth of 2 mm and the end portion including the portion corresponding to the narrow groove forming surface VS with the width of 5 mm and the depth of 2 mm, the medium fiber board 15 is obtained. The fitting groove 15Aa and the cutout portion 15Ab are formed in.

Then, as shown in the same figure (c), a natural decorative plank plate material 13A having a width of 10 mm and a thickness of 2 mm is fitted in the fitting groove 15Aa of the medium quality fiberboard 15A, and a width of 5 mm is provided in the cutout portion 15Ab of the medium quality fiberboard 15A. By fitting the natural decorative planks 14A having a thickness of 2 mm, the surface layer material 12A composed of the medium quality fiberboard 15A and the natural decorative planks 13A, 14A is formed on the wooden base material 11.

After that, the flooring material 1A is manufactured through the same steps as the manufacturing method shown in FIG. That is, the surface of the surface layer material 12A is smoothed by sanding, and the natural decorative thin plate material 16 is attached to the upper surface of the surface layer material 12A as shown in FIG. The composite plate 10A in which the material 12A and the natural decorative thin plate material 16 are laminated is formed. Finally, as shown in FIG. 7E, the upper surface of the composite plate 10A is cut to form the narrow groove TV and the narrow groove forming surface VS, and then the narrow groove TV and the narrow groove forming surface VS are formed. The floor material 1A is completed by painting the formed upper surface.

7A and 7B show another embodiment. The floor material 1B is integrally formed by the wood base material 11B in which the wood fiber base material 11 and the surface layer materials 12, 12A of the floor materials 1, 1A are made of medium fiber board 15, 15A. The floor material is different from the above-mentioned floor materials 1 and 1A in that it is formed.

The wood base material 11B is formed with a fitting groove 11Ba having a width of 10 mm and a depth of 3 mm at the center in the lateral direction on the upper surface thereof, and a notch portion 11Bb having a width of 5 mm and a depth of 3 mm at the peripheral end portion. In the fitting groove 11Ba of the wooden base material 11B, a natural decorative plank material 13 having a width of 10 mm and a thickness of 3 mm having a groove portion 13a forming a narrow groove TV is formed in the cutout portion 11Bb of the wooden base material 11B. Natural decorative planks 14 having a width of 5 mm and a thickness of 3 mm, each having an inclined surface 14a forming the surface VS, are fitted into the groove 13a formed on the natural decorative plank 13 and the slope formed on the natural decorative plank 14. The natural decorative thin plate member 16 is attached to the upper surfaces of the natural decorative thick plate members 13 and 14 and the wooden base material 11B in a state of being divided into two in the lateral direction so as to exclude the surface 14a.

The flooring material 1B configured as described above is manufactured as follows. First, as shown in FIG. 8A, the widthwise central portion including the portion corresponding to the narrow groove TV is 10 mm wide and 3 mm deep on the upper surface of the wood base material 11B made of a medium quality fiberboard. After forming the fitting groove 11Ba and the notch 11Bb in the wood base material 11B by cutting the end portion including the portion corresponding to the narrow groove formation surface VS with a width of 5 mm and a depth of 3 mm, respectively, the same figure ( As shown in b), the fitting groove 11Ba of the wooden base material 11B is provided with a natural decorative plank 13 having a width of 10 mm and a thickness of 3 mm, and the cutout portion 11Bb of the wooden base material 11B is provided with a natural decorative thickness of 5 mm and a thickness of 3 mm. The plate materials 14 are fitted in each.

After that, the flooring material 1B is manufactured through the same steps as the manufacturing method shown in FIG. That is, the surface of the wooden base material 11B on which the natural decorative planks 13 and 14 are fitted is smoothed by sanding, and the natural decorative planks 13 and 14 are fitted as shown in FIG. By attaching the natural decorative thin plate member 16 to the upper surface of the wooden base material 11B, the composite plate 10B is formed. Finally, as shown in FIG. 7D, the upper surface of the composite plate 10B is cut to form the narrow groove TV and the narrow groove forming surface VS, and then the narrow groove TV and the narrow groove forming surface VS are formed. When the formed upper surface is painted, the flooring material 1B is completed.

In the flooring materials 1, 1A, 1B manufactured as described above, the natural decorative plank materials 13, 13A form the groove portions 13a, 13Aa constituting the narrow groove TV, and the natural decorative plank materials 14, 14A form the narrow groove forming surface VS. Since it has the inclined surfaces 14a and 14Aa respectively constituting the above, the narrow groove TV portion formed in the center portion in the lateral direction of the floor materials 1, 1A and 1B and the boundary between the adjacent floor materials 1, 1A and 1B. It is possible to give the fine groove portion formed by the fine groove forming surface VS the beauty of wood grain like a solid wood, and the width of the natural decorative plank material 13, 13A is 10 mm, the natural decorative plank material 14, Since the width of 14A is set to 5 mm, the outer portion of the width of 10 mm including the narrow groove TV is in a mode in which the natural decorative thin plate material 16 is lined with the medium fiberboards 15 and 11B of high hardness. Even if you use other furniture or chairs, the dents will not be noticeable, and it will not be dented even if heavy objects fall. Further, regarding the natural decorative plank materials 13 and 13A and the natural decorative plank materials 14 and 14A, there is also an effect that the end material can be effectively utilized.

In particular, in the floor material 1B, since a high-hardness wood fiber board is used as the wood base material 11B, it fits on the upper surface of the wood base material 11B made of a medium quality fiber board as in the manufacturing method shown in FIG. After forming the groove 11Ba and the cutout portion 11Bb, the natural decorative planks 13 and 14 may be fitted into the fitting groove 11Ba and the cutout portion 11Bb. Therefore, as when using plywood as a wood base material, The step of attaching the fiberboard to the plywood is unnecessary, and the effect of easy manufacture is obtained.

In addition, in the floor material 1B described above, a medium-quality fiberboard is used as the wooden base material 11B, but the present invention is not limited to this, and the same effect can be obtained by using a particle board as the wooden base material. Obtainable.

Further, in each of the above-described embodiments, the width of the natural decorative planks 13 and 13A is set to 10 mm, and the width of the natural decorative planks 14 and 14A is set to 5 mm, but the present invention is not limited to this, and the narrow groove is used. The width of the natural decorative plank material having the groove portion configuring the TV is not less than the maximum width of the narrow groove TV and 30 mm or less, and the width of the natural decorative plank material having the inclined surface configuring the narrow groove forming surface VS is the maximum width of the narrow groove TV. It is desirable to set the distance to more than 1/2 and 15 mm or less. This is because if the width of the natural decorative plank material having the groove portion forming the narrow groove TV exceeds 30 mm, the region easily recessed near the narrow groove TV expands, which is not preferable from the viewpoint of caster resistance.

The thickness of the natural decorative planks 13, 13A and the natural decorative planks 14, 14A is not particularly limited, but the total thickness of the natural decorative thin plate and the natural decorative plank must be equal to or greater than the depth of the narrow groove. Needless to say.

Further, in each of the above-described embodiments, the vertical cross-sectional shape of the natural decorative plank plate material 13, 13A having the groove portions 13a, 13Aa forming the narrow groove TV before the narrow groove processing and the inclined surface 14a forming the narrow groove forming surface VS, The vertical cross-sectional shape of the natural decorative planks 14 and 14A having 14Aa before narrow groove processing is a rectangular shape in which the upper end portion (upper surface) and the lower end portion (lower surface) have the same width, but the present invention is not limited to this. If the upper end (upper surface) of the natural decorative plank is wider than the lower end (lower surface) and the end face of the wood fiberboard is aligned with the end face of the natural decorative plank, the natural decorative thickness The wood fiberboard is in the lower part of the wide upper side of the plate material, and the part of the wood fiberboard that has entered is the thinness of the natural decorative plank material, so the upper end (upper surface) and the lower end (lower surface) The effect that the outer side portion of the narrow groove in the natural decorative plank material is less likely to be recessed than in the natural decorative plank material having the same width is obtained.

For example, as shown in FIG. 9(a), the vertical cross-sectional shape of the natural decorative plank material 13 having the groove portions 13a forming the narrow groove TV is a trapezoidal shape in which the upper bottom is wider than the lower bottom, As shown in (b) of the figure, an inverted triangular shape having a lower end as an apex, and as shown in (c) of the figure, an upper half has a wide rectangular shape and a lower half has a narrow rectangular shape. A certain polygonal shape, or a shape protruding downward from both end portions of the upper surface in an arc shape as shown in FIG. 9(e) to 9(h) are cross-sectional views showing the narrow groove portions of the floor material formed using the natural decorative plank material 13 shown in FIGS. 9(a) to 9(d).

Further, the longitudinal cross-sectional shape of the natural decorative plank material 14 having the inclined surface 14a forming the narrow groove forming surface VS before the inclined surface processing is the natural decorative plank material 13 shown in FIGS. Will be divided into two at the center portion in the width direction.

Further, in each of the above-described embodiments, the narrow groove TV has a complete V-shape formed by a pair of opposed flat inclined surfaces, but the present invention is not limited to this and, for example, as shown in FIG. It is also possible to form a curved V-shaped narrow groove TV1 formed by polishing the outer corner portion of the narrow groove formed in a V-shaped cross section into a curved shape protruding outward. The upper inner surface of the groove portion 13a of the natural decorative thick plate member 13 and the inclined surface 16a of the natural decorative thin plate member 16 constituting the narrow groove TV1 are both curved.

Further, in each of the above-described embodiments, the floor materials 1, 1A, 1B in which the narrow groove TV extending in the longitudinal direction is formed in the central portion in the width direction have been described, but the present invention is not limited to this, and the present invention is For example, as shown in FIG. 11, it is also possible to apply it to a flooring 1C having a random groove TV.

INDUSTRIAL APPLICATION This invention can be utilized for the flooring which has a narrow groove.

1, 1A, 1B, 1C Floor material 10, 10A, 10B Composite board 11, 11B Wood base material 11Ba Fitting groove 11Bb Notch portion 12, 12A Surface layer material 13, 13A Natural decorative plank material 13a, 13Aa Groove portion 14, 14A Natural makeup Thick plate material 14a, 14Aa Inclined surface 15, 15A Medium fiberboard 15a, 15b Cutout part 15Aa Fitting groove 15Ab Cutout part 16 Natural decorative thin plate material 16a, 16b Inclined surface TV, TV1 Small groove VS Small groove forming surface

Claims (2)

The V-shaped narrow groove is formed on the surface, and the V-shaped narrow groove is formed at the boundary with the adjacent floor material to be actually joined. A floor material in which a narrow groove forming surface to be
A wooden base made of plywood,
A natural decorative plank material having a groove portion forming the narrow groove and a natural decorative plank material having an inclined surface forming the narrow groove forming surface, which is attached to the upper surface of the wooden base material.
Wood adhered to the upper surface of the wooden base material in a state where the end face is abutted against the end surface of the natural decorative plank material so as to cover a region where the natural decorative plank material is not adhered on the upper surface of the wooden base material. Fiberboard,
Excluding the groove and the inclined surface formed in the natural decorative plank material, the natural decorative plank material and a natural decorative thin plate material attached to the upper surface of the wood fiber board,
In the natural decorative plank material having the groove portion, the width of the groove portion in the width direction is not less than the maximum width of the narrow groove and not more than 30 mm, and the natural decorative plank material having the slanted surface is adjacent to the floor material to be actually joined. The width in the width direction of the narrow groove formed by is set to 1/2 or more and 15 mm or less of the maximum width of the narrow groove,
The natural decorative plank material, the upper end is formed wider than the lower end,
The floor material, wherein an end surface of the wood fiberboard that is abutted with an end surface of the natural decorative plank material has a shape that follows an end surface shape of the natural decorative plank material. The V-shaped narrow groove is formed on the surface, and the V-shaped narrow groove is formed at the boundary with the adjacent floor material to be actually joined. A floor material in which a narrow groove forming surface to be
A wooden base made of plywood,
While having a fitting groove on the upper surface side, having a notch on the upper surface side of the peripheral portion to be actually joined, a wood fiber board attached to the upper surface of the wood base material,
A groove portion forming the narrow groove is formed on the upper surface side, and the narrow groove forming surface is formed on the upper surface side of the natural decorative plank material fitted in the fitting groove of the wood fiber board and the peripheral portion to be actually joined. An inclined surface is formed, and a natural decorative plank material fitted in the cutout portion of the wood fiber board,
Excluding the groove and the inclined surface formed in the natural decorative plank material, the natural decorative plank material and a natural decorative thin plate material attached to the upper surface of the wood fiber board,
In the natural decorative plank material having the groove portion, the width of the groove portion in the width direction is not less than the maximum width of the narrow groove and not more than 30 mm, and the natural decorative plank material having the slanted surface is adjacent to the floor material to be actually joined. The width in the width direction of the narrow groove formed by is set to 1/2 or more and 15 mm or less of the maximum width of the narrow groove,
The natural decorative plank material, the upper end is formed wider than the lower end,
The floor material, wherein the fitting groove and the inner surface of the cutout portion of the wood fiber board have a shape that follows the widthwise end surface shape of the natural decorative plank material.

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