JP2530572Y2 - Wood flooring - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a wooden floor in which a veneer as a decorative board is laminated on a veneer on the surface of a wooden plywood substrate and a large number of grooves are formed on the back surface of the wooden plywood substrate. More specifically, the present invention relates to a technique for avoiding the occurrence of cracks and cracks in a veneer.

[0002]

2. Description of the Related Art Conventionally, the function of a floor material applied to, for example, a floor heating system embedded in a concrete and a floor heating system using a panel has a function of a thermal expansion and a floor heating.
Avoiding cracks and cracks in veneer with natural wood grain laminated on the surface as a decorative board due to shrinkage, moisture absorption and drying, and adaptability to unevenness of concrete floor surface and base panel surface And the fact that it is easy to remove for maintenance in case of floor heating failure.

[0003] As a technique for avoiding the occurrence of cracks or cracks in the veneer, as shown in FIG.
The fiber direction of the veneer 1a of the surface layer and the fiber direction of the veneer 2 are substantially perpendicular to each other to reinforce the strength of the veneer 2 in the direction perpendicular to the fiber direction. A kerf 4 is formed on the back side of the plywood substrate 1.

[0004]

[Problem to be solved by the invention]
By making the fiber direction of the veneer 1a on the surface layer of the wood plywood substrate 1 substantially orthogonal to the fiber direction of the veneer 2, it is possible to suppress the occurrence of cracks or cracks in the veneer 2. It will decrease. Therefore, as shown in FIG. 4, if the fiber direction of the veneer 2 is the same as the fiber direction of the veneer 1 a of the surface layer of the wood plywood base material 1, the bending property of the veneer 2 is improved, It is easily broken or cracked.

[0005] The present invention is intended to solve such a problem, and an object of the present invention is to improve the flexibility of a veneer, which is a veneer plate, while suppressing the occurrence of cracks and cracks. In providing flooring.

[0006]

The wooden flooring material of the present invention comprises a veneer 2 having a fiber direction substantially equal to the fiber direction of the surface veneer 1a of the woody plywood substrate 1 laminated on the surface veneer 1a. A wooden flooring material in which a number of cut grooves 4 are formed in a single veneer 1b below the veneer 1a except for a veneer 1a in the surface layer of the woody plywood base material 1 and between the veneer 2 and the veneer 2 in the surface layer. In the fiber direction substantially orthogonal to these fiber directions, the surface layer veneer 1a protrudes.
It is characterized by being provided with an auxiliary veneer thinner than the plate 2 .

[0007]

As described above, the veneer 1a of the surface layer of the wooden plywood substrate 1
By forming a large number of cut grooves 4 in the veneer 1b... Less than this, the rigidity of the wooden plywood substrate 1 is reduced, and the warpage of the wooden plywood substrate 1 is suppressed, Rather, it gives flexibility so that it can be easily conformed to the base material, and the fiber direction of the veneer 2 is the same as that of the veneer 2 because the wood veneer substrate 1 has the same fiber direction as the veneer 1a. By making the fiber direction of the auxiliary veneer 3 substantially orthogonal to that of the veneer 2, the generation of cracks and cracks in the surface veneer 1a at the auxiliary veneer 3 is suppressed. When the directions are orthogonal to each other, sufficient flexibility is provided without hindering the flexibility.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wooden flooring material A is formed on a wooden plywood base material 1 in which an odd number (five in this example) of veneers 1a, 1b, 1c... 1e are laminated and bonded so that their fiber directions are substantially orthogonal to each other. A large number of kerfs 4 are formed in a single veneer 1b below the surface veneer 1a except for the veneer veneer 1a.
In order to laminate and bond the veneer 2 to a, an auxiliary veneer 3 having a small thickness in a fiber direction substantially orthogonal to these fiber directions is interposed between the veneer 1a and the veneer 2 in the surface layer. . The wood-based plywood substrate 1 includes a 3-ply structure in which three veneers 1a are stacked and a 7-ply structure in which seven veneers are stacked. On the lower surface of the wooden plywood substrate 1, for example, a high-density soft sheet 5 filled with metal powder is laminated.

As described above, the surface veneer 1a of the wooden plywood substrate 1 is left, and a plurality of cut grooves 4 are formed in the veneer 1b.
Is formed, the rigidity of the wood plywood base material 1 is reduced, the warpage of the wood plywood base material 1 is suppressed, and rather, the wood plywood base material 1 is made more flexible so that the wood plywood base material 1 can be easily adapted to the base material. The fiber direction of the veneer 2 is the same as that of the veneer 2, and the fiber direction of the auxiliary veneer 3 interposed between the veneers 2 of the veneer 1 a is the veneer of the surface. 1a and veneer plate 2
By making the veneers substantially orthogonal to those of the above, the generation of cracks and cracks in the veneer 1a in the surface layer is suppressed in the auxiliary veneer 3, and the auxiliary veneer 3 is thin and the fiber direction is orthogonal, thereby inhibiting the flexibility. Therefore, it has sufficient flexibility. In such cases,
High-density soft sheet 5 laminated on the lower surface of wooden plywood substrate 1
However, the wooden floor material A does not have to be applied with an adhesive. The base on which the wooden floor material A is laid is provided with a heat source for performing floor heating.

[0010] As a specific embodiment, the thickness of the protruding plate 2 in the configuration of FIG. 1
9mm, 3mm, 1mm, 3mm, 1mm)
m is laminated and adhered to the wooden plywood substrate 1, and a 3-mm thick high-density soft sheet 5 is laminated and adhered to the lower surface of the wooden plywood substrate 1. In such a case, the veneer 1 of the surface layer of the wooden plywood substrate 1
The fiber direction of a is the same as the fiber direction of the veneer plate 2. In the specific examples, it was found that the crack resistance for suppressing the occurrence of cracks and cracks was good, and the flexibility was also good.

In Comparative Example 1, the thickness of the protruding plate 2 was 0.3
mm ply was laminated on a 9 mm thick wooden plywood substrate 1 with 5 plies, and a 3 mm high-density soft sheet 5 was laminated on the back surface of the wooden plywood substrate 1. In this case, the fiber direction of the veneer 2 and the fiber direction of the veneer 1a on the surface of the wood plywood substrate 1 are the same. In Comparative Example 1, it was found that the crack resistance was poor, the veneer plate 2 was easily cracked or cracked, and the flexibility was good.

In Comparative Example 2, the thickness of the projecting plate 2 was 0.3
mm ply was laminated on a 9 mm thick wooden plywood substrate 1 with 5 plies, and a 3 mm high-density soft sheet 5 was laminated on the back surface of the wooden plywood substrate 1. In such a case, the fiber direction of the veneer 2 and the fiber direction of the veneer 1a of the surface layer of the wooden plywood substrate 1 are substantially orthogonal to each other. In such a comparative example, it was found that the crack resistance was good and the flexibility was poor.

[0013]

As described above, according to the present invention, a veneer having a fiber direction substantially equal to the fiber direction of the veneer of the surface layer of the wooden plywood substrate is laminated on the surface veneer and the surface layer of the wooden plywood substrate is provided. Since a large number of kerfs are formed in the veneer below this leaving the veneer, the rigidity of the wood plywood substrate is reduced,
Suppresses the warp of the wood plywood base material, rather gives it flexibility and makes it easier to adjust to the base, and the fiber direction of the veneer veneer is the same as the surface veneer veneer. Since the fiber direction of the auxiliary veneer to be interposed is substantially orthogonal to that of the surface veneer and the veneer, the auxiliary veneer suppresses the generation of cracks and cracks in the surface veneer, and the auxiliary veneer is The above surface layer
By making the fiber direction orthogonal to the thickness of the plate and veneer ,
There is an advantage that sufficient flexibility is provided without inhibiting the flexibility.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view in which a part of the above is omitted.

FIG. 3 is a sectional view of a conventional example.

FIG. 4 is a sectional view of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wooden plywood base material 2 Veneer board 3 Auxiliary veneer 4 Cut groove

Claims (1)

(57) [Scope of request for utility model registration] 1. A veneer having a fiber direction substantially equal to a fiber direction of a veneer of a surface layer of a wooden plywood substrate is laminated on a veneer of a surface layer, and a veneer of a surface layer of a wooden plywood substrate remains below the veneer. Wood veneer in which a number of kerfs are formed in veneer veneer, and between the veneer veneer and veneer in the fiber direction in a direction substantially orthogonal to these fiber directions between veneer veneer and veneer veneer Wooden flooring with thin auxiliary veneers.