JPH1136509A - Panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control warps in panel itself to the utmost and, at the same time, to reduce a product cost as well as promotion of productivity by improving panel such as lumber core plywood, etc. SOLUTION: A panel is constituted of a core 11, three ply wood 13 laminated on the front and the rear of the core plate 11 through adhesives and faces 17 laminated on the outsides of three ply wood 13 with adhesives. The core 11 is so constituted that a plurality of narrow members are arranged in a non- adhesive state. Three ply wood 13 are so constituted that a lumber thin plate 15 constituted of an intermediate layer is thenner than lumber thin plates 16 and 14 constituting of external and internal layers, the direction of fiber of the lumber thin plates 16 and 14 constituting the external and internal layers is provided with the direction of fiber at right angles to the direction of fiber of the core 11 and that the direction of fiber of the lumber thin plate 15 constituting the intermediate layer is so laminated on the core 1 that it is the same direction as the direction of fiber of the core 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel used as furniture for a furniture, a fitting or a house, and more particularly to a wood board on the surface of a core board made of a plurality of thin materials such as flat plates and strips. Related to the attached panel.

[0002]

2. Description of the Related Art Due to the depletion of logs, it has become difficult to assemble furniture and fittings with Muku wood.
In recent years, so-called flash panels, in which a surface material is stuck to a core material formed in a frame shape, have been frequently used as materials for furniture and fittings.

[0003] However, since the above-mentioned flash panel has a hollow inside in structure, the sound at the time of contact does not feel heavy, and furniture and fittings assembled using the flash panel lack luxury. There were drawbacks.

Therefore, as an alternative to the above-mentioned flash panel, a core plate is formed by arranging a plurality of fine materials (muk materials) formed by sawn wood and floor material waste in parallel along the longitudinal direction. Panels such as lumbar core plywood (lamin board, block board, and batten board) having various wood boards adhered to the surface of the core board are used.

[0005]

However, in the above-mentioned panels such as lumbar core plywood, since the thin materials constituting the core are usually adhered to each other by an adhesive, each of the panels constituting the core is provided. By the expansion and contraction of the fine material of
There was a problem that the entire panel was likely to be warped.

[0006] Further, since it takes time to bond the thin materials, there is a problem that the manufacturing cost of the panel itself is increased and the weight of the panel is increased by the amount of the adhesive used.

It is an object of the present invention to improve the panel such as the lumbar core plywood as described above to minimize the warpage of the panel itself, to improve the productivity of the panel, and to reduce the product cost. is there.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a core plate formed by a plurality of thin materials arranged side by side in a non-adhesive state, and a front surface and a rear surface of the core plate, respectively. At least three layers sequentially laminated with an adhesive.
A panel having at least one of the thin wooden boards laminated on the front and back surfaces of the core board, wherein at least one of the thin wooden boards has a fiber direction different from the fiber direction of the core board. Is provided.

In the panel configured as described above, since the plurality of fine members constituting the core plate are not bonded to each other,
The expansion and contraction of the fine material during use over time are absorbed, and the warpage of the entire panel can be suppressed to a small value.

Further, in manufacturing the core plate, the step of bonding fine materials is not required, and no adhesive is used, so that a lightweight panel can be manufactured at low cost.

In addition, since at least one of the laminated wood thin plates has a fiber direction different from the fiber direction of the core plate, the strength in a direction different from the fiber direction of the core plate is reduced. growing.

Further, since at least three thin wood plates are laminated on the front and back surfaces of the core plate, even if irregularities are formed on the front and back surfaces of the core plate composed of a plurality of fine materials, the laminated thin wood plates are laminated. The unevenness of the panel surface is almost eliminated by gradually deforming the thin wood plates, so that a beautiful panel surface can be obtained.

[0013] Further, among the three wood thin plates laminated on the front and back surfaces of the core board, respectively, the fiber directions of the wood thin sheets forming the inner layer and the outer layer are different from the fiber directions of the core board, and the intermediate layer has a different fiber direction. When the three thin wood boards are laminated on the front and back surfaces of the core board, respectively, the fiber direction of the core board is set so that the fiber direction of the wood board constituting the core board is the same as the fiber direction of the core board. The strength in the direction different from the direction is further increased, and when using a single veneer with the same thickness as the three laminated wood veneers, or using three wood veneers so that the fiber directions are all the same. The warpage of the panel can be reduced as compared with the case where the panels are stacked.

[0014] Further, if the wood thin plates forming the inner layer and the outer layer are formed thicker than the wood thin plates forming the intermediate layer, the strength of the core in the direction different from the fiber direction is further increased. The thickness of the panel can be reduced without reducing the overall strength.

Conversely, a thin wood plate constituting the intermediate layer is
If the inner layer and the outer layer are formed to be thicker than the thin wood plate, the strength in the same direction as the fiber direction of the core is increased, and the wood screw holding force can be sufficiently secured. Therefore, the panel having such a configuration is suitable as a member used in a place where a force is applied in a certain direction, such as a side plate of a stair, a tread, a beam, or the like.

When it is desired to increase the thickness of the panel, a plurality of cores formed by arranging a plurality of thin materials in a non-adhered state are combined with an intermediate material bonded to the core with an adhesive. By using a configuration in which a wooden board is laminated via an adhesive on the outer surface of the outermost core board, waste material limited in size can be effectively used as a material for forming a thin material. can do.

As the intermediate material, in addition to a wooden board,
Paper or sheet can also be used. In particular, when paper is used, it is more preferable to use special paper such as resin-impregnated paper having rigidity because the strength of the panel is increased.

Further, the intermediate member is constituted by three thin wood plates sequentially laminated with an adhesive, and the three thin wood plates are laminated so that the fiber directions of the adjacent thin wood plates are different from each other. By doing so, the strength of the entire panel is increased and the strength of the core in a direction different from the fiber direction is increased as compared with the case where the thickness of the core is increased to increase the thickness of the panel.

In particular, in consideration of the strength of the entire panel, it is preferable that the intermediate member has a thin wood plate adjacent to the core plate having a fiber direction different from that of the core plate.

As described above, by sandwiching the intermediate member between the plurality of core plates, the above-mentioned unevenness of the core plate can be absorbed by the intermediate member, and thus the amplification is achieved by directly laminating the plurality of core plates. Unevenness can be effectively suppressed, and a beautiful panel surface without unevenness can be obtained.

The term "wood board" as used herein is a broad concept including a thin wood board, an MDF, a hard board and the like.

[0022]

Embodiments will be described below with reference to the drawings. As shown in FIG.
Is a core plate 11, a 3-ply plywood 13 laminated on the front and back surfaces of the core plate 11 via an adhesive (not shown),
The three-ply plywood 13 has a surface decorative plate 17 made of a veneer or the like laminated on an outer surface of the plywood 13 via an adhesive (not shown).

The core plate 11 has a plurality of fine members 12 arranged side by side in a non-bonded state.
A flat plate structure is maintained by binding the whole of the plurality of narrow members 12 arranged side by side with a thread (not shown).

The thin material 12 constituting the core plate 11 includes smouth (specific gravity: 0.26-0.41), balsa (specific gravity: 0.10-0.17), and falkata (specific gravity:
0.3-0.4) southern lumber, and cedar (specific gravity:
Low specific gravity wood such as 0.38) is used.

The three-ply plywood 13 has a thickness of the thin wooden board 16 constituting the outer layer of 2.5 mm, a thickness of the thin wooden board 15 of the intermediate layer of 1 mm, and a thickness of the thin wooden board 1 of the inner layer.
4 has a thickness of 2 mm, and the thin wood plates 16 and 14 forming the outer and inner layers are thicker than the thin wood plates 15 forming the middle layer.

The three-ply plywood 13 has an intermediate layer in which the fiber directions of the thin wood plates 16 and 14 constituting the outer layer and the inner layer are perpendicular to the fiber direction of the core board 11. The fiber direction of the thin wood plate 15 is
Are laminated on the core plate 11 so as to be in the same direction as the fiber direction.

As the veneer of the surface decorative material 17, an oak material or the like having a thickness of about 1 mm is used, but decorative paper or the like may be used instead of the veneer.

As described above, in the panel 1 configured as described above, since the plurality of fine members 12 constituting the core plate 11 are not bonded to each other, each of the fine members 12 individually expands and contracts. Even in this case, the stress due to the expansion and contraction is dispersed, and the warpage of the entire panel 1 can be reduced.

In addition, since the step of applying the adhesive to the thin material 12 is not required in manufacturing the core plate 11, the manufacturing of the core plate 11 can be easily performed, and the thin materials are bonded to each other by the adhesive. A lighter panel 1 can be manufactured at a lower cost than a conventional panel.

Further, since the fiber directions of the two thin wood plates 14 and 16 constituting the three-ply plywood 13 laminated on the core board 11 are orthogonal to the fiber direction of the core board 11,
The strength in the direction perpendicular to the fiber direction of
Wood thin plate 1 constituting outer and inner layers of ply plywood 13
6 and 14 are thicker than the thin wood plate 15 constituting the intermediate layer, so that the strength of the panel 1 is not reduced.
The thickness of the entire panel 1 can be reduced.

FIG. 2 shows another embodiment. As shown in FIG. 1, the panel 2 includes a core 21 formed by a plurality of fine members 22 arranged side by side in a non-adhesive state, and an adhesive (not shown) ) And a 3-ply plywood 23 laminated through
3 in that it is composed of a surface decorative plate 27 made of a veneer or the like laminated on the outer surface of the third through an adhesive (not shown).
The thickness of the thin wood plate 26 constituting the outer layer of the 3-ply plywood 23 is 2 mm, the thickness of the thin wood plate 25 constituting the middle layer is 3 mm, and the thickness of the thin wood plate 24 constituting the inner layer is 2 mm. And the wood thin plate 25 constituting the middle layer is the wood thin plate 26 constituting the outer layer and the inner layer,
It is different from the panel 1 in that it is thicker than 24.

The panel 2 constructed as described above has
Since the wood thin plate 25 serving as the intermediate layer of the ply plywood 23 is thicker than the wood thin plates 26 and 24 forming the outer layer and the inner layer, the strength in the same direction as the fiber direction of the core board 21 increases, and sufficient wood screw holding is performed. Power can be secured. It is needless to say that the same effects as those of the panel 1 can be obtained for the panel 2 with respect to the same components as the panel 1.

Each of the panels 1 and 2 described above has a core 1
The 3-ply plywood 13, 23 is laminated on 1, 21
It is not necessarily required to be a 3-ply plywood, and a 5-ply plywood may be laminated, or at least three thin wooden boards may be used as the core board 11,
21 may be sequentially laminated.

When three or more thin wooden boards are individually laminated without using plywood, the thin wooden boards adjacent to the core boards 11 and 21 may have a fiber direction different from that of the core boards 11 and 21. It is desirable that the direction of fiber of the laminated wood thin plates be alternately different, but it is not always necessary that at least one of the three or more laminated wood thin plates be used. It is only necessary that the thin wood plate has a fiber direction different from the fiber direction of the core plates 11 and 21.

FIG. 3 shows another embodiment. The panel 3 includes an intermediate member 31 made of 3-ply plywood, and an adhesive (not shown) attached to the front and back surfaces of the intermediate member 31, respectively.
And a wooden board 37 laminated on an outer surface of the core board 35 with an adhesive (not shown).
A surface decorative board 38 made of a veneer or the like laminated on the outer surface of the wooden board 37 via an adhesive (not shown).

In the three-ply plywood 31, the fiber direction of the thin wood plates 32, 34 having a thickness of 0.5 mm adjacent to the both cores 35 is orthogonal to the fiber direction of the core 35, and the thickness constituting the intermediate layer is reduced. The 1 mm thick wood thin plate 33 has the same fiber direction as the fiber direction of the core 35.

As in the case of the panels 1 and 2 described above, the core plate 35 has a plurality of thin members 36 arranged side by side in a non-adhered state. By tying the entire thin material 36 with a thread (not shown),
A flat plate structure is maintained. In addition, this thin material 36 is the thin material 1 constituting the core plates 11 and 21 of the panels 1 and 2 described above.
It is formed of the same wood as that of 2,22.

The wooden board 37 has a thickness of 1.5 mm.
Is used, and its fiber direction is orthogonal to the fiber direction of the core plate 35. In addition, this wooden board 37
In addition to the above-mentioned thin wood plate, MDF, hard board, or the like can be used.

As the veneer of the surface decorative material 38, a blank material having a thickness of about 0.5 mm is used, but decorative paper or the like can be used instead of the veneer.

In the panel 3 configured as described above, the thickness of the panel 3 is increased by laminating the two core plates 35 on the intermediate member 31. Therefore, by using one thick core plate, Compared with the case where the thickness of the panel is increased, it is not necessary to increase the thickness of the thin material to be used more than necessary, and waste material whose size is limited can be effectively used as a material for forming the thin material.

Further, since the intermediate member 31 is sandwiched between the two core plates 35, the strength of the entire panel 3 is increased, and a single plate having the same thickness as the 3-ply plywood 31 is used. In addition, the warpage of the panel can be reduced as compared with a case where three thin wood plates are stacked so that the fiber directions are all the same.

Further, since the irregularities formed on each core plate 35 can be individually absorbed by the intermediate member 31, the unevenness amplified by directly laminating a plurality of core plates can be effectively suppressed. And a beautiful panel surface without unevenness can be obtained.

Further, the fiber direction of the wood board 37 is orthogonal to the fiber direction of the core board 35, and the thickness of the wood board 37 is equal to or more than the thickness of the intermediate member 31, so that the strength of the entire panel 3 is further increased. , Sufficient wood screw holding force can be secured.

It is to be noted that, for a portion having the same structure as the panels 1 and 2 such as the core plate 35, the same effect as that of the panels 1 and 2 can be obtained for the panel 3. Needless to say.

FIG. 4 shows another embodiment. As shown in the figure, this panel 4 has a core plate 45 laminated on the front and back surfaces of an intermediate member 41 made of 3-ply plywood, respectively.
The wooden board 47 is laminated on the outer surface of the core board 45 and the decorative panel 48 is laminated on the outer surface of the wooden board 37, which is the same as that of the panel 3. However, the wood constituting the outer layer and the inner layer of the intermediate material 41 The thickness of the thin plates 42 and 44 is 1.5 mm, the thickness of the wood thin plate 43 forming the middle layer is 1.0 mm, and the thin wood plate 43 forming the middle layer is different from the thin wood plates 42 and 44 forming the outer and inner layers. It differs from the panel 1 in that it is thinner and the thickness of the thin wood plates 42, 44 is substantially the same as the thickness of the wood board 47.

The panel 4 thus constructed is composed of thin wood plates 42, 44 constituting the outer and inner layers of the intermediate member 41.
Since the thickness of the panel 4 is substantially the same as the thickness of the wooden board 47, there is an effect that the warpage of the entire panel 4 is further reduced. It is needless to say that the same effects as those of the panel 3 can be obtained for the panel 4 with respect to the same components as the panel 3.

Although the above-mentioned panels 3 and 4 each use a 3-ply plywood for the intermediate members 31 and 41, they are not necessarily 3-ply plywood, and are made by sequentially laminating three thin wood plates. There may be.

FIG. 5 shows another embodiment. As shown in the figure, this panel 5 has an intermediate material 51 having a thickness of 3 mm.
A core 52 laminated on the front and back surfaces of the intermediate member 51 via an adhesive (not shown); and a core 52 laminated on the outer surface of the core 52 via an adhesive (not shown). 3m thick
m, and a decorative board 55 made of a veneer or the like laminated on the outer surface of the wood board 54 via an adhesive (not shown).

The core plate 52 is formed by arranging a plurality of thin members 53 side by side in a non-adhered state. (Not shown), the flat plate structure is maintained.

The intermediate member 51 and the wooden board 54 include:
A thin wood plate having a thickness of 3.0 mm is used, and its fiber direction is orthogonal to the fiber direction of the core plate 52. The intermediate member 51 and the wooden board 54 may be made of MDF, hard board, or the like other than the above-mentioned thin wood board, and it is preferable to use those having substantially the same thickness.

In the panel 5 configured as described above, since the fiber direction of the thin wood plate constituting the intermediate member 51 and the wooden board 54 is orthogonal to the fiber direction of the core board 52, the panel 5
The overall strength is increased, and the intermediate material 51 and the wooden board 54
Since the thickness of the panel 5 is the same, there is an effect that the warpage of the entire panel 5 is reduced. It is needless to say that the same effects as those of the panels 3 and 4 can be obtained with respect to the same components as those of the panels 3 and 4.

The panel 5 is composed of one intermediate member 51.
The two core boards 52 are laminated via the intermediate member, but the present invention is not limited to this. Three or more core boards are sequentially laminated via an intermediate material, and the outer surface of the outermost core board is made of wood. It is also possible to adopt a configuration in which a plate and a surface decorative material are sequentially laminated. Also,
As the intermediate member 51 interposed between the core plates 52, paper or sheet may be used in addition to the wooden plate.

[0053]

As described above, claims 1 to 7 are as described above.
In the panel described in (1), since a plurality of fine materials constituting the core plate are not bonded to each other, expansion and contraction of the fine materials during use over time are absorbed, and the warpage of the entire panel can be suppressed to a small value.

Further, in manufacturing the core plate, the step of bonding fine materials is not required and no adhesive is used, so that a lightweight panel can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment according to the present invention.

FIG. 2 is a cross-sectional view showing another embodiment.

FIG. 3 is a cross-sectional view showing another embodiment.

FIG. 4 is a cross-sectional view showing another embodiment.

FIG. 5 is a cross-sectional view showing another embodiment.

[Explanation of symbols]

 1, 2, 3, 4, 5 Panel 11, 21 Core plate 12, 22 Fine material 13, 23 3-ply plywood 14, 15, 16, 24, 25, 26 Wood thin plate 17, 27 Surface decorative material 31, 41, 51 Intermediate materials 32, 33, 34, 42, 43, 44 Wood thin plates 35, 45, 52 Core boards 36, 46, 53 Fine materials 37, 47, 54 Wood boards 38, 48, 55 Surface decorative materials

Claims (7)

[Claims] 1. A core plate formed by a plurality of thin materials arranged side by side in a non-adhesive state, and at least three pieces of wood sequentially laminated with an adhesive on each of the front and back surfaces of the core plate A panel comprising: a thin plate, wherein at least one of the thin wooden plates among the thin wooden plates laminated on the front and back surfaces of the core plate has a fiber direction different from a fiber direction of the core plate. 2. The three thin wood sheets laminated on the front and back surfaces of the core board, respectively, wherein the thin wood sheets forming the inner layer and the outer layer have a fiber direction different from the fiber direction of the core board, and The panel according to claim 1, wherein the wood lamina constituting the layer has the same fiber direction as the fiber direction of the core board. 3. The panel according to claim 2, wherein the thin wooden boards constituting the inner layer and the outer layer are formed thicker than the thin wooden boards constituting the intermediate layer. 4. The panel according to claim 2, wherein the thin wood sheet constituting the intermediate layer is formed thicker than the thin wood sheets constituting the inner layer and the outer layer. 5. A plurality of cores formed by arranging a plurality of thin materials in a non-adhered state in a stacked manner via an intermediate material bonded to the core with an adhesive, and A panel in which a wooden board is laminated on an outer surface of the core board via an adhesive. 6. The panel according to claim 5, wherein the intermediate member is formed of three pieces of wood thin sheets sequentially laminated with an adhesive, and directions of fibers of the adjacent wood thin sheets are different from each other. . 7. The panel according to claim 6, wherein in the intermediate material, the thin wood plate adjacent to the core plate has a fiber direction different from a fiber direction of the core plate.