JPH11324290A - Woody floor covering material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a woody floor covering material, which has a surface having high hardness, in which indentation deformation and cracking are difficult to be generated, which abounds in flexibility and in which affinity to a floor foundation and soundproof performance are also improved and warping deformation is difficult to be generated. SOLUTION: A medium-density woody fiber board (MDF) 2 thinner than base material plywood 1 is stuck onto the surface of the base material plywood 1, in which a plurality of kerfs 11 are juxtaposed to a rear, and woody thin veneer 3 thinner than the MDF board 2 is pasted on the surface of the MDF board 2. It is particularly effective that a plurality of the kerfs 21 are juxtaposed to the rear of the MDF board 2, or the thickness size of the MDF board 2 is set in 1 mm or less or a cushion sheet 4 is stuck onto the rear of the base material plywood 1 at that time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden flooring made by sticking a thin wooden veneer to the surface of an MDF board (medium density fiberboard).

[0002]

2. Description of the Related Art A conventional general wooden flooring is shown in FIG.
As shown in the figure, the thin wooden veneer 3 was adhered to the surface of the base plywood 1, but in this case, the surface of the base plywood 1 was low, There is a problem that the dent is easily deformed and cracks occur in the thin wooden veneer 3.

Therefore, as shown in FIG. 3 (b), a wood flooring material using an MDF board 2 as a base material and attaching a thin wood veneer 3 to the surface of the MDF board 2 has recently been developed. It is becoming. In this case, since the surface hardness of the MDF board 2 is high, the surface of the thin wooden veneer 3 is easily dented and deformed, and the problem that the thin wooden veneer 3 is cracked is solved.

However, in this case, the MDF board 2
Since the entire base material of the MDF board becomes strong rigidity, the flexibility is insufficient, the familiarity with the floor base is deteriorated, the soundproof performance is reduced, and the base material of the MDF board 2 easily expands and contracts. For this reason, there has been a problem that warping deformation is apt to occur due to a difference in stretching stress between the thin wooden veneer 3 and the thin wooden veneer 3.

[0005]

SUMMARY OF THE INVENTION The present invention was invented in order to solve all the problems in the prior art described above. That is, the object of the present invention is that the surface is hard and dent deformation and cracking hardly occur. It is an object of the present invention to provide a wooden flooring material which is flexible, has good familiarity with a floor substrate, has good soundproofing performance, and is hardly warped.

[0006]

According to a first aspect of the present invention, there is provided a wooden flooring material comprising: an MDF board thinner than the base material plywood on a surface of the base material plywood having a plurality of cut grooves formed on a back surface thereof. Affix,
A wooden thin veneer thinner than the MDF board is attached to the surface of the MDF board.

Therefore, in this case, since the MDF board which is thicker and has a higher surface hardness than the thin wooden veneer is present on the back side of the thin wooden veneer, the surface of the thin wooden veneer becomes high in hardness and dent deformation occurs. And cracks are less likely to occur. Moreover, since the highly rigid MDF board is thinner than the base material plywood, and a plurality of cut grooves are arranged in parallel on the back surface of the base material plywood, the overall structure is rich in flexibility and has good familiarity with the floor substrate. The soundproofing performance is also improved. Further, since the MDF board which is easily expanded and contracted does not become thick enough to become the base material, the expansion stress due to this is reduced, and the warp deformation hardly occurs.

According to a second aspect of the present invention, there is provided the wooden flooring according to the first aspect, wherein a plurality of cut grooves are arranged in parallel on the back surface of the MDF board. Therefore, in this case, in particular, the plurality of grooves provided side by side on the back surface of the MDF board reduces the rigidity of the MDF board, further improves the familiarity with the floor substrate, and further improves the soundproofing performance. The expansion and contraction of the MDF board is absorbed, and the warpage is reliably prevented.

According to a third aspect of the present invention, there is provided the wooden flooring according to the first aspect, wherein the thickness of the MDF board is 1 mm or less. Therefore,
In this case, in particular, since the thickness of the MDF board is considerably reduced to 1 mm or less, its rigidity and expansion and contraction stress are reduced, the familiarity with the floor base is further improved, and the soundproofing performance is further improved. Is reliably prevented.

According to a fourth aspect of the present invention, there is provided the wooden flooring according to any one of the first to third aspects, wherein a cushion sheet is attached to a back surface of the base material plywood. And Therefore, in this case, in particular, the shock applied to the surface of the thin wooden veneer is absorbed by the cushion sheet attached to the back surface of the base material plywood, so that dent deformation and cracking are further less likely to occur on the surface. At the same time, the soundproofing performance is further improved, and the familiarity with the floor base is further improved by the interposition of the cushion sheet.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
4 shows an embodiment corresponding to FIG. 4, in which a wooden flooring material is provided on a surface of a base material plywood 1 having a plurality of cut grooves 11 arranged on a back surface, and an MDF board 2 thinner than the base material plywood 1. Affix,
A wooden thin veneer 3 thinner than the MDF board 2 is attached to the surface of the MDF board 2. In this case, a plurality of cut grooves 21 are provided in parallel on the back surface of the MDF board 2, and the cushion sheet 4 is attached to the back surface of the base material plywood 1.

The base material plywood 1 is a 5-ply (five-layer) wood plywood, and the fiber direction of each layer is alternately orthogonal. The thickness of the substrate plywood 1 is 7 to 8 mm, and each layer has the same thickness. The back surface of the base material plywood 1 is subjected to cutting and a plurality of cut grooves 11 are juxtaposed, and the depth dimension of the cut grooves 11 is 5 to 7 mm. The second to third layers from the outermost layer are provided, and the cut grooves 11 are juxtaposed at an appropriate pitch.

The MDF board 2 is a medium-density wood fiber board having a thickness of 1.35 mm, and is adhered to the surface of the base plywood 1 via an adhesive. On the back surface of the MDF board 2, a plurality of cut grooves 21 having a depth of 0.5 to 0.8 mm are arranged in parallel at equal intervals. In this case, the groove bottom of the kerf 21 is the MDF board 2
And the cut grooves 21 are arranged side by side at equal pitches smaller than the pitch interval of the cut grooves 11 of the base material plywood 1.

The thin wooden veneer 3 is a natural or artificial wooden decorative veneer having a thickness of 0.25 mm, and is adhered to the surface of the MDF board 2 via an adhesive. The cushion sheet 4 is a urethane foam having a thickness of 4.7 mm.
It is stuck to the back surface of the base material plywood 1 via an adhesive. The cushion sheet 4 has a thickness of 4 to 6 mm.
mm nonwoven fabric may be used.

Therefore, in the wooden flooring material of the embodiment, the MDF board 2 having a higher surface hardness than the thin wooden veneer 3 exists behind the thin wooden veneer 3, The surface of Sample No. 3 has a high hardness, so that dent deformation and cracking hardly occur. Moreover, the highly rigid MDF board 2 is thinner than the base material plywood 1, and a plurality of cut grooves are formed on the back surface of the base material plywood 1.
Since 11 are arranged side by side, the overall flexibility is high, the familiarity with the floor base is improved, and the soundproofing performance is also improved. In addition, since the MDF board 2 which is easily expanded and contracted does not become thick enough to become a base material, the expansion and contraction stress due to this is reduced, and warpage is less likely to occur.

Further, in the wooden flooring material of the embodiment, M
By the plurality of cut grooves 21 arranged in parallel on the back surface of the DF board 2,
The rigidity of the MDF board 2 is reduced, the familiarity with the floor base is further improved, and the soundproof performance is further improved. In addition, the expansion and contraction of the MDF board 2 is absorbed, and the warpage deformation is reliably prevented. Moreover, the shock applied to the surface of the thin wooden veneer 3 is absorbed by the cushion sheet 4 adhered to the back surface of the base material plywood 1, so that dent deformation and cracking are less likely to occur on the surface, and sound insulation is also achieved. The performance is further improved, and the interposition of the cushion sheet 4 further improves the familiarity with the floor base and improves the walking sensation.

FIG. 5 shows another embodiment corresponding to the first, third and fourth aspects of the present invention. In the wooden floor material of the embodiment, the thickness of the MDF board 2 is 1 mm or less. In this case, the thickness of the MDF board 2 is 0.5 to 1.0 m
m, and the rear surface thereof is not provided with the kerf 21 in the above embodiment. The MDF board 2 is formed by sanding the MDF board 2 having a thickness of 1.35 mm in the above embodiment and adjusting the thickness so that the thickness becomes 0.5 to 1.0 mm.

Further, on the back surface of the base material plywood 1, two kinds of cut grooves 11 having different depth dimensions are alternately arranged side by side at an appropriate equal pitch. The groove bottom of the other cut groove 11 reaches the middle of the second layer from the most surface layer of the base material plywood 1. Otherwise, the configuration is exactly the same as in the above embodiment.

Therefore, in this case, in particular, since the MDF board 2 is considerably thin with a thickness of 1 mm or less,
The rigidity and the expansion and contraction stress are reduced, the familiarity with the floor base is further improved, the soundproofing performance is further improved, and the warpage is reliably prevented. Other than that,
Since the configuration is completely the same as the above embodiment, the same operation and effect as in the above embodiment can be obtained.

[0020]

As described above, in the wooden flooring material according to the first aspect of the present invention, the surface of the thin wooden veneer hardly undergoes dent deformation or cracking, and has a high flexibility as a whole, and is under the floor. The soundproofing performance is improved as well as the familiarity with the ground, and the warping deformation is less likely to occur due to the reduction of the stretching stress due to the MDF board.

In the wooden flooring material according to the second aspect of the present invention, in particular, the rigidity of the MDF board is reduced by the cut grooves, so that the familiarity with the floor substrate is further improved and the soundproofing performance is further improved. In addition, the expansion and contraction of the MDF board is absorbed by the cut grooves, and the warpage is reliably prevented.

In the wood flooring material according to the third aspect of the present invention, in particular, since the thickness of the MDF board is 1 mm or less, its rigidity and expansion and contraction stress are reduced, so that the wood flooring is further adapted to the floor substrate. As a result, the soundproofing performance is further improved, and the warpage is reliably prevented.

In the wooden flooring material according to the fourth aspect of the present invention, in particular, since the impact applied to the surface of the thin wooden veneer is absorbed by the cushion sheet, dent deformation or cracking further occurs on the surface. The cushioning is also improved and the soundproofing performance is further improved, and the familiarity with the floor base is further improved by the interposition of the cushion sheet.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a wooden floor material according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a wooden floor material according to another embodiment.

FIGS. 3A and 3B are cross-sectional views showing different conventional wooden flooring materials.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material plywood 2 MDF board 3 Wooden thin veneer 4 Cushion sheet 11 Cut groove 21 Cut groove

Claims (4)

[Claims] 1. An MDF board thinner than the base material plywood is adhered to a surface of the base material plywood having a plurality of cut grooves arranged in parallel on a back surface, and a wooden material thinner than the MDF board is attached to the front surface of the MDF board. Wooden flooring made by attaching thin veneers. 2. The wood flooring according to claim 1, wherein a plurality of cut grooves are provided in parallel on the back surface of the MDF board. 3. The wooden flooring according to claim 1, wherein the thickness of the MDF board is 1 mm or less. 4. The wooden flooring material according to claim 1, wherein a cushion sheet is attached to a back surface of the base material plywood.