JPH06146552A - Floor board - Google Patents

Abstract

PURPOSE:To prevent the generation of cracking, breakage, etc., in a facing even under heating, and to improve decorative properties. CONSTITUTION:A substrate 1 consisting of plywood and surface veneer 3 are laminated and unified while interposing sliced veneer 2 composed of nontropical broadleaf-tree diffuse-porous wood having the quality of material, in which vessel distribution is equalized, such as ordinary firch, between the substrate 1 and the surface veneer 3. The fibrous direction is oriented in the same longitudinal direction in the substrate 1 and the surface veneer 3 while the fibrous direction is oriented in the direction orthogonal to the fibrous direction of these substrate 1 and veneer 3 in the sliced veneer 2. A decorative groove 4, in which the depth reaches the surface layer section of the substrate 1 along the fibrous direction of the veneer 3, is formed on the veneer 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flooring material for a building such as a house, and more particularly to a flooring material which can be preferably used even under a stretchable condition severe for wood such as a heating flooring material.

[0002]

2. Description of the Related Art Conventionally, plywood and MDF have been used as floor materials.
It is widely known that a wood-made decorative veneer is attached to the surface of a wood-based substrate such as. In such a flooring material, when the base material is a rectangular plywood, the fiber direction of the surface layer of the plywood base material is usually oriented in the longitudinal direction, and the fiber direction is formed on the surface of the plywood base material. It is formed by sticking a thin wood decorative veneer with the fibers oriented in a direction substantially parallel to.

[0003] Further, the wood decorative veneer is subjected to wiping treatment or other colored undercoating or coating with a synthetic resin transparent paint, or by impregnating the veneer with a synthetic resin,
It is used that has improved surface cosmetic properties or is hard to be scratched on the surface. In addition, a V-shaped or U-shaped decorative groove having a depth reaching from the surface to the base material is engraved in order to give an appearance in which a narrow board is combined with a wood decorative veneer in a parquet look. A structure having a chamfered structure is also widely known.

[0004]

However, in the case of an ordinary flooring in which a wood decorative veneer is attached to the surface of a base material such as plywood in the same fiber direction, for example, heating the room in winter. Or, when used as a decorative plate for floor heating, the decorative veneer is dried and contracted by the heat, and since the contraction cannot be blocked by the base material, cracks and cracks occur in the decorative veneer, In the structure in which a plurality of decorative veneers are attached side by side in a parquet pattern on the surface of the base material, there is a problem in that a gap is created at the joint between the decorative veneers and the appearance and durability are significantly impaired. Further, the occurrence of cracks as described above cannot be suppressed even if the surface of the decorative veneer is protected by painting or the like. Such cracks and cracks due to shrinkage drying can be reduced by using a so-called WPC board made by impregnating a decorative veneer with a synthetic resin liquid and curing it.
Plates were low in productivity and expensive.

On the other hand, a tropical hardwood such as Lauan is used as a substrate and the decorative veneer is attached to the surface of the substrate with the fiber directions orthogonal to each other, whereby the occurrence of cracks or the like can be reduced. Although it has been done, the pipe diameter is too large for Nanyo wood, and since it is usually used as a rotary veneer with many cracks, the effect of preventing the occurrence of cracks is not sufficient, and further, When coated, there is a problem that color unevenness is likely to occur on the surface of the decorative veneer due to the effect of rough surfaces such as cracks on the surface of the substrate. Further, when such a decorative veneer of a flooring material is subjected to groove processing or chamfering to reach from the surface to the surface layer portion of the substrate along the fiber direction, the cutting surface of the groove bottom is treated with the base material surface. There was a problem in that large duct holes of tropical hardwood and cracks in the rotary veneer were exposed and the cut surface became rough, and the coating appearance of the decorative groove and chamfered surface was impaired.

The present invention has been made in view of the above problems, and does not cause cracks on the surface even in an environment with severe cold heat changes such as heating in winter, and a decorative groove provided on the surface. It is an object of the present invention to provide a floorboard having a structure capable of performing good decorative coating on the like.

[0007]

In order to achieve the above object, the floorboard of the present invention is such that the fiber direction is substantially orthogonal to the fiber direction of the surface layer of the substrate on the surface of the substrate made of rectangular plywood having an appropriate thickness. The thickness of the non-tropical hardwood pore material is 0.
A slice veneer of 1 to 0.6 mm is attached, and the fiber direction is approximately orthogonal to the fiber direction of the slice veneer on the surface of the slice veneer so that the slice veneer has a thickness of 1/2 to 2 times. The decorative veneer having the above-mentioned structure is attached, and a decorative groove having a depth reaching the substrate from the surface of the decorative veneer is provided along the fiber direction of the decorative veneer.

[0008]

[Function] A slice veneer in which the fiber directions of the substrate and the surface decorative veneer are oriented in the same direction, and a crack of 0.1 to 0.6 mm in thickness is unlikely to occur between the substrate and the surface decorative veneer. By interposing and integrating the fibers so that the fiber directions thereof are substantially orthogonal to the fiber directions of the substrate and the decorative veneer, and the thickness of the decorative veneer is 1/2 to 2 times that of the sliced veneer. It is possible to effectively offset the shrinkage of the surface decorative veneer due to the temperature change of cold and warm. Furthermore, since the sliced veneer is made of non-tropical hardwood porosity material, the material is homogeneous, and major defects such as back cracking do not occur, so it prevents the occurrence of cracks etc. and is a durable flooring material. Become.

Further, when a decorative groove extending from the surface of the decorative veneer into the surface layer of the substrate is formed in the fiber direction of the decorative veneer and the substrate, the groove cutting of the slice veneer in which the fiber directions are substantially orthogonal to these The wood fiber and the cut end surface of the conduit are exposed on the surface, but since the sliced veneer is made of non-tropical hardwood diffuser such as mackerel, the conduit holes are scattered,
In addition, the thinness hardly impairs the cosmetic properties in combination with the thinness, and further, a good finish coating can be performed without causing uneven coloring.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.
Reference numeral 1 is a rectangular substrate composed of 7-ply plywood, and the fiber direction of its surface layer is oriented in the longitudinal direction. Reference numeral 2 is a sliced veneer made of a non-tropical hardwood perforation material of 0.3 mm thick such as mackerel, which has a shape obtained by dividing the above-mentioned substrate 1 into a plurality of desired dimensions in the length direction, and its fiber direction. Are arranged in parallel on the front surface of the substrate 1 so as to be substantially orthogonal to the fiber direction of the surface layer of the substrate 1, and the back surface thereof is integrally bonded to the substrate 1 with an adhesive such as melamine resin.

Reference numeral 3 is a surface-decorated veneer composed of a 0.3 mm thick oak slice veneer, which has the same shape as the surface of the substrate
The fiber direction is made substantially orthogonal to the fiber direction of the sliced veneer 2, and the sliced veneer 2 is attached and integrated with the surface of the sliced veneer 2 by the adhesive. Reference numeral 4 is a cross-section V cut along the fiber direction of the decorative veneer 3 with a depth (1.2 mm in this embodiment) reaching the surface layer of the substrate 1 from the surface of the decorative veneer 3. The floor material is a letter-shaped or U-shaped decorative groove, and by providing a plurality of the decorative grooves 4 in parallel, the floor material has a parquet-like appearance. 5 is a decorative veneer 3
Is a coating layer coated on the entire surface of, and is formed by applying a colored wiping base coating and an aminoalkyd-based, polyester-based, or acrylic urethane-based topcoat coating.

In the floorboard having such a structure,
By interposing and integrating the slice veneer 2 in which the fiber directions are substantially orthogonal to these fiber directions between the substrate 1 and the surface decorative plate 3 in which the fiber directions are oriented in the same direction, the contraction action is achieved. However, if the thickness of the sliced veneer 2 is less than 0.1 mm, the effect of suppressing expansion and contraction by arranging the fiber directions in a substantially orthogonal direction is reduced, and the thickness is 0.6 mm. If it exceeds, the balance of expansion and contraction with the plywood which is the substrate 1 will be lost, and conversely the warp will easily occur, so the thickness of the sliced veneer 2 is formed within the range of 0.1 to 0.6 mm.

If the thickness of the decorative surface veneer 3 with respect to the sliced veneer 2 is less than 1/2, the decorative veneer 3 may be wrinkled or swollen due to the expansion and contraction of the sliced veneer 2. At the same time, if the thickness is twice or more, the effect of suppressing the expansion and contraction of the decorative veneer 3 by the slice veneer 2 is impaired, so the thickness of the decorative veneer 3 is set to a range of 1/2 to 2 times that of the slice veneer 2. It is desirable to keep.

When a veneer obtained from a conifer is used as the slice veneer 2, since the difference in the density of the coniferous tree between the spring wood part and the autumn wood part is large, the decorative veneer 3 to the decorative groove 4 as described above is used. It is not preferable to paint on the cut surface exposed in the groove surface when engraving, because the unevenness of color will occur due to the large difference in the density of spring and autumn, and even with hardwood, the ring material Tropical broad-leaved trees such as Lauan and Lawan are unfavorable because the distribution of their conduits is uneven and the diameter of the conduit holes is large, causing problems similar to those of the above-mentioned coniferous trees.

Therefore, the slice veneer 2 suitable for being interposed between the substrate 1 and the surface decorative veneer 3 is a hardwood perforation material such as citrus birch, wig, beech, maple, linden or the like. Such hardwood porosity materials such as mackerel have a homogeneous material, and when formed into sliced veneer 2, no major defects such as back cracking occur, so surface cracks and cracks suitable for severe operating conditions such as under heating. It is possible to form a floor board with good durability that does not cause scratches.

When the decorative groove 4 is formed from the surface decorative veneer 3 of the floor board along the fiber direction of the decorative veneer 3 as described above, a slice veneer constituting a lower layer of the decorative veneer 3 is formed. Two
Since the fiber direction is provided in the direction orthogonal to the fiber direction of the decorative veneer 3, the wood fiber of the sliced veneer 2 and the cut surface of the conduit are exposed on the cut wall surface of the decorative groove 4. Then
Although the groove wall of the decorative groove 4 becomes a rough surface and the finished state such as painting deteriorates, in order to reduce such defects, the sliced veneer 2 is formed as thin as 0.1 to 0.6 mm as described above. In addition to this, non-tropical hardwood diffusers such as mackerel, which have a relatively small diameter and are scattered, are used.

Further, when a colored coating such as a wiping coating is applied to the surface, when a rotary veneer such as the plywood substrate 1 is directly arranged below the decorative veneer 3, the rotary veneer is produced. Due to back cracking and large conduit holes,
Coloring unevenness may occur in the one-ply coating of the decorative veneer 3, but such a color unevenness can be eliminated by using the sliced veneer 2 of the broad-leaved wood spouting material as described above.

In the above embodiment, an example in which the decorative grooves are engraved in the direction parallel to the fiber direction of the surface decorative veneer has been shown, but for decoration purposes, the decorative grooves are also formed in the direction orthogonal to the parallel decorative grooves. Appropriate decorative grooves can be provided. Further, such a decorative groove can be configured such that a chamfered narrow plate or the like is connected to form a floor plate, and a chamfered decorative groove is formed at the connecting portion.

[0019]

As described above, according to the floorboard of the present invention, the thickness of non-tropical hardwood sprinkling material is formed on the surface of the substrate made of plywood so that the fiber direction is substantially orthogonal to the fiber direction of the substrate surface layer. With a slice veneer of 0.1 to 0.6 mm, and the fiber direction on the surface of the slice veneer is made to be substantially orthogonal to the fiber direction of the slice veneer, and the slice veneer is 1/2 to 2 times larger than the slice veneer. Since it has a structure in which a decorative veneer having a thickness is attached, the thickness is 0.1 to 0.6 m when the fiber direction is oriented between the substrate and the decorative veneer in a direction orthogonal to these fiber directions.
Since the sliced veneer of m is interposed, this sliced veneer can offset the expansion and contraction change that occurs in the veneered veneer, and the thickness of the veneered veneer is 1/2 of that of the veneered veneer.
Since it is formed twice as large, it can reliably prevent wrinkles and swelling from occurring on the decorative veneer despite the expansion and contraction of the sliced veneer, and the decorative veneer will crack even under severe conditions such as heating. It is possible to eliminate the occurrence of cracks and cracks.

Furthermore, since the non-tropical hardwood sponge material from which the material is homogeneous is used as the sliced veneer, no major defects such as back cracking occur and the occurrence of cracks as described above is prevented. It is possible to provide a floorboard having excellent durability. Further, a decorative groove having a depth reaching the substrate from the surface of the decorative veneer is provided along the fiber direction of the decorative veneer, and the cut wood fiber of the sliced veneer or the conduit is exposed on the cut surface of this groove. However, since the sliced veneer is made of a hardwood perforated material as described above, the duct holes are in a scattered state, and in combination with being thin, the cosmetic properties of the decorative groove are hardly impaired. In addition, good finish coating is possible without causing uneven coloring.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a floor plate,

FIG. 2 is a simplified enlarged sectional view thereof.

[Explanation of symbols]

 1 Substrate 2 Slice veneer 3 Decorative veneer 4 Decorative groove 5 Coating layer

Claims (1)

[Claims] 1. A substrate made of rectangular plywood having an appropriate thickness has a fiber direction substantially orthogonal to a fiber direction of the surface layer of the substrate, and a thickness of the non-tropical hardwood sprinkling material is 0.1-.
A 0.6 mm sliced veneer is attached, and the surface of the sliced veneer is made to have a fiber direction substantially orthogonal to the fiber direction of the sliced veneer and a thickness of 1/2 to 2 times that of the sliced veneer. A floorboard, to which a veneer is attached, and further provided with a decorative groove having a depth reaching the substrate from the surface of the veneer along the fiber direction of the veneer.