JP3418096B2 - panel - Google Patents

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, fittings, or a building material for a house, and more particularly, a wooden board is provided on the surface of a core plate formed of a plurality of thin materials such as flat plates and strips. Regarding the pasted panel.

[0002]

2. Description of the Related Art It has become difficult to assemble furniture and fittings from solid wood due to the exhaustion of raw wood.
Recently, a so-called flash panel in which a surface material is attached to a frame-shaped core material has been frequently used as a material for furniture and fittings.

However, since the above-mentioned flash panel has a hollow inside due to its structure, the sound at the time of contact is not heavy, and the furniture and fittings assembled by using the flash panel lack a high-class feeling. There was a flaw.

Therefore, as an alternative to the above-mentioned flash panel, a plurality of thin materials (muk materials) formed by waste materials of lumber and floor materials are arranged in parallel along the longitudinal direction to form a core plate. Panels such as lumber core plywood (lamin board, block board, batten board) are used in which various wood boards are attached to the surface of the core board.

[0005]

However, in the above-mentioned panel such as the lumber core plywood, usually, the thin materials forming the core plates are bonded to each other by an adhesive, so that the respective core plates are formed. By the expansion and contraction of
There was a problem that the entire panel was easily warped.

Further, since it takes time to bond the thin materials to each other, the manufacturing cost of the panel itself is increased and the weight of the panel is increased by the amount of the adhesive used.

Therefore, an object of the present invention is to improve the panel such as the lumber core plywood as described above to suppress the warp of the panel as much as possible, improve the productivity of the panel and reduce the product cost. is there.

[0008]

In order to solve the above-mentioned problems, the present invention relates to a core plate formed of a plurality of thin members arranged in a non-bonded state so as to absorb expansion and contraction. At least three wood thin plates sequentially laminated with an adhesive agent on each of the front surface and the back surface of the core plate, and at least one of the wood thin plates laminated on the front and back surfaces of the core plate, respectively. Providing a panel in which the wood lamellas have a fiber orientation different from the fiber orientation of the mandrel.

In the panel constructed as described above, since the plurality of thin materials constituting the core plate are not adhered to each other,
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 level.

Further, when manufacturing the core plate, the step of bonding the thin material is not necessary and the adhesive is not used, so that the lightweight panel can be manufactured at a low cost.

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 the direction different from the fiber direction of the core plate is large. growing.

Further, since at least three wood thin plates are laminated on the front and back surfaces of the core plate, even if unevenness is formed on the front and back faces of the core plate composed of a plurality of thin materials, the wood plates are laminated 3 Since the unevenness of the thin wood sheets is gradually deformed to absorb the unevenness, the unevenness of the panel surface is almost eliminated and a beautiful panel surface can be obtained.

Of the three wood thin plates laminated on the front and back surfaces of the core plate, the fiber directions of the wood thin plates constituting the inner layer and the outer layer are different from the fiber directions of the core plate, and the intermediate layer is formed. When the three wood thin plates are respectively laminated on the front and back surfaces of the core plate so that the fiber directions of the wood thin plates constituting the same are the same as the fiber directions of the core plate, the fibers of the core plate are The strength in the direction different from the direction is further increased, and when three laminated wood sheets are used and a single plate with the same thickness is used, the three wood sheets are arranged so that the fiber directions are all in the same direction. The warp of the panel can be suppressed to be small as compared with the case of stacking.

If the wood thin plates constituting the inner layer and the outer layer are formed thicker than the wood thin plates constituting the intermediate layer, the strength in the direction different from the fiber direction of the core plate is further increased. The thickness of the panel can be reduced without lowering the overall strength.

On the contrary, the wood thin plate constituting the intermediate layer is
If it is formed thicker than the wood thin plate constituting the inner layer and the outer layer, the strength in the same direction as the fiber direction of the core plate becomes large, and a sufficient wood screw holding force can be 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 staircase, a footboard, a beam, or the like.

Further, when it is desired to increase the thickness of the panel , the expansion and contraction of a plurality of thin materials are absorbed.
, A plurality of core plates formed by juxtaposed in a non-adhesive state are laminated via an intermediate material that is adhered to the core plates by an adhesive, and an adhesive is applied to the outer surface of the outermost layer of the core plates. By adopting the configuration in which the wooden boards are laminated via the, it is possible to effectively use the waste material, which is limited in terms of size, as a material for forming the thin material.

As the intermediate material, in addition to wood boards,
Paper or a sheet may be used. Particularly, when using paper, it is more preferable to use a special paper such as a resin-impregnated paper having rigidity because the panel strength is increased.

Further, the intermediate material is composed of three wood thin plates sequentially laminated with an adhesive, and three wood thin plates are laminated so that the fiber directions of adjacent wood thin plates are different from each other. Then, the strength of the entire panel is increased and the strength in a direction different from the fiber direction of the core plate is increased as compared with the case where the thickness of the panel is increased by increasing the thickness of the core plate.

Particularly, considering the strength of the whole panel, it is desirable that the intermediate material has a thin wood plate adjacent to the core plate having a fiber direction different from the fiber direction of the core plate.

As described above, by sandwiching the intermediate member between the plurality of core plates, it is possible to absorb the above-mentioned unevenness of the core plate by the intermediate member, so that it is amplified by directly laminating the plurality of core plates. The unevenness can be effectively suppressed, and a beautiful panel surface without the unevenness can be obtained.

The "wood board" is a broad concept including thin wood boards, MDF, hard boards and the like.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to the drawings. As shown in FIG. 1, this panel 1
Is a mandrel 11, and a three-ply plywood 13 laminated on the front and back surfaces of the mandrel 11 with an adhesive (not shown),
The three-ply plywood 13 is composed of a surface decorative plate 17 made of a projecting plate or the like laminated on the outer surface of the three-ply plywood 13 with an adhesive (not shown).

The core plate 11 is formed by arranging a plurality of thin members 12 in a non-bonded state, and in the manufacturing process,
The flat plate structure is maintained by binding the plurality of thin materials 12 arranged side by side with threads (not shown).

The fine material 12 constituting the core plate 11 includes smouth (specific gravity: 0.26 to 0.41), balsa (specific gravity: 0.10 to 0.17), and farkata (specific gravity:
0.3-0.4) Southern Ocean material, as well as Japanese cedar (specific gravity:
Low specific gravity wood such as 0.38) is used.

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

In the three-ply plywood 13, the fiber directions of the wood thin plates 16 and 14 constituting the outer layer and the inner layer have a fiber direction orthogonal to the fiber direction of the core plate 11 and form an intermediate layer. The fiber direction of the wood thin plate 15 is the core plate 11
It is 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, oak material having a thickness of about 1 mm is used, but decorative paper or the like can be used instead of the veneer.

As described above, in the panel 1 constructed as described above, since the plurality of thin members 12 constituting the core plate 11 are not bonded to each other, each thin member 12 individually expands and contracts. Even in such a case, the stress due to the expansion and contraction is dispersed, and the warp of the entire panel 1 can be suppressed to be small.

Further, since the step of applying the adhesive to the fine material 12 is not required when manufacturing the core plate 11, the core plate 11 can be easily manufactured and the fine materials are bonded to each other by the adhesive agent. The lighter panel 1 can be manufactured at a lower cost than the conventional panel.

Since the fiber directions of the two wood thin plates 14 and 16 constituting the 3-ply plywood 13 laminated on the core plate 11 are orthogonal to the fiber direction of the core plate 11, the core plate 11
The strength in the direction perpendicular to the fiber direction of the
Wood thin plate 1 that constitutes the outer and inner layers of ply plywood 13
Since 6 and 14 are thicker than the wood thin plate 15 that constitutes the intermediate layer, without reducing the strength of the panel 1,
The thickness of the entire panel 1 can be reduced.

FIG. 2 shows another embodiment. As shown in the figure, the panel 2 includes a mandrel 21 formed of a plurality of thin members 22 arranged in a non-bonded state, and an adhesive (not shown) on the front and back surfaces of the mandrel 21. ) And the 3-ply plywood 23 and the 3-ply plywood 2
3 is a surface decorative plate 27 made of a veneer or the like laminated on the outer surface of the sheet 3 via an adhesive (not shown),
Same as the panel 1, but the thickness of the wood thin plate 26 forming the outer layer of the three-ply plywood 23 is 2 mm, the thickness of the wood thin plate 25 forming the middle layer is 3 mm, and the thickness of the wood thin plate 24 forming the inner layer is 2 mm. And the thin wood plate 25 constituting the middle layer is a thin wood 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 in this way is
Since the wood thin plate 25 which is an intermediate layer of the ply plywood 23 is thicker than the wood thin plates 26 and 24 which form the outer layer and the inner layer, the strength in the same direction as the fiber direction of the core plate 21 is increased and sufficient wood screw retention is achieved. You can secure power. 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 those of the panel 1.

The above-described panels 1 and 2 are both core plates 1.
Although 1 and 21 are laminated with 3 ply plywood 13 and 23,
It does not necessarily have to be a 3-ply plywood, but a 5-ply plywood may be laminated, or at least three thin wood plates may be used as the core plate 11,
21 may be sequentially laminated.

When three or more wood thin plates are individually laminated without using plywood, the wood thin plates adjacent to the core plates 11 and 21 have different fiber directions from those of the core plates 11 and 21. It is desirable that the laminated wood thin plates have different fiber directions alternately, but this is not necessarily the case, and at least one of the three or more laminated wood thin plates is required. It is only necessary that the wood thin plate has a fiber direction different from the fiber directions 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 adhesives (not shown) on the front surface and the back surface of the intermediate member 31, respectively.
And a wooden board 37 laminated on the outer surface of the core board 35 with an adhesive (not shown),
It is composed of a surface decorative plate 38 made of a veneer or the like laminated on the outer surface of the wooden plate 37 with an adhesive (not shown).

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

As in the case of the panels 1 and 2 described above, the core plate 35 is formed by arranging a plurality of thin members 36 in a non-bonded state, and in the manufacturing process, a plurality of the thin members 36 are arranged in a line. By tying the entire thin material 36 of No. 3 with a thread (not shown),
The flat plate structure is maintained. The thin material 36 is the thin material 1 that constitutes the core plates 11 and 21 of the panels 1 and 2 described above.
It is made of the same wood as 2 and 22.

The wooden board 37 has a thickness of 1.5 mm.
Is used, and the fiber direction thereof is orthogonal to the fiber direction of the core plate 35. In addition, this wooden board 37
In addition to the above-mentioned wood thin plate, MDF, hard board, etc. can be used, and it is preferable to use one having a thickness equal to or larger than that of the three-ply plywood 31.

The veneer of the surface decorative material 38 is made of oak having a thickness of about 0.5 mm, but decorative paper or the like may be used instead of the veneer.

In the panel 3 constructed as described above, since the thickness of the panel 3 is increased by laminating the two core plates 35 on the intermediate material 31, it is possible to use one core plate having a large thickness. Compared with the case of increasing the thickness of the panel, it is not necessary to increase the thickness of the fine material to be used more than necessary, and it is possible to effectively use a waste material that is limited in size as a material for forming the fine material.

Further, since the intermediate member 31 is sandwiched between the two core plates 35, the strength of the whole panel 3 is increased and a single plate having the same thickness as the three-ply plywood 31 is used. The warp of the panel can be suppressed to be smaller than that in the case where three wood thin plates are laminated so that the fiber directions are all in the same direction.

Further, since the unevenness 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. It is possible to obtain a beautiful panel surface without unevenness.

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 whole panel 3 is further increased. , It is possible to secure a sufficient wood screw holding force.

Regarding the portion having the same structure as that of 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 this panel 3 as well. Needless to say.

FIG. 4 shows another embodiment. As shown in the figure, in this panel 4, core plates 45 are laminated on the front surface and the back surface of an intermediate member 41 made of 3-ply plywood,
This is the same as the panel 3 in that the wooden board 47 is laminated on the outer surface of the core board 45 and the surface decorative board 48 is laminated on the outer surface of the wooden board 37, but the wood constituting the outer layer and the inner layer of the intermediate member 41 is formed. The thin plates 42 and 44 have a thickness of 1.5 mm, the thin wood plate 43 that forms the intermediate layer has a thickness of 1.0 mm, and the thin wood plate 43 that forms the intermediate layer is smaller than the thin wood plates 42 and 44 that form the outer and inner layers. It is different from the panel 1 in that it is thin and the thickness of the thin wooden plates 42, 44 is substantially the same as the thickness of the wooden plate 47.

The panel 4 thus constructed has the thin wooden plates 42, 44 constituting the outer and inner layers of the intermediate member 41.
Is substantially the same as the thickness of the wooden board 47, so that there is an effect that the warp 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 those of the panel 3.

In each of the panels 3 and 4 described above, the three-ply plywood is used for the intermediate members 31 and 41, but it is not necessarily the three-ply plywood, and three wood thin plates are sequentially laminated. It may be.

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

The core plate 52 is formed by arranging a plurality of thin materials 53 in a non-bonded state, and in the manufacturing process, the plurality of thin materials 53 arranged in parallel are threaded (see the figure). The flat plate structure is maintained by binding with (not shown).

As the intermediate member 51 and the wood board 54,
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. As the intermediate member 51 and the wooden board 54, MDF, hard board, or the like can be used in addition to the above-mentioned thin wooden board, and it is desirable to use those having substantially the same thickness.

In the panel 5 constructed as described above, since the fiber directions of the thin wood plates constituting the intermediate member 51 and the wood board 54 are orthogonal to the fiber directions of the core plate 52, the panel 5
The overall strength is increased, and moreover, 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 warp of the entire panel 5 becomes smaller. Needless to say, the same effects as those of the panels 3 and 4 can be obtained for the panel 5 with respect to the same components as those of the panels 3 and 4.

Further, this panel 5 includes one intermediate member 51.
Although the two core plates 52 are laminated through the above, the number of core plates is not limited to this, and three or more core plates are sequentially laminated through the intermediate material, and the outermost core plate is made of wood. It is also possible to adopt a configuration in which the plate and the surface decorative material are sequentially laminated. Also,
As the intermediate member 51 interposed between the core plates 52, it is possible to use paper or a sheet other than the wooden plate.

[0053]

As described above, the claims 1 to 7 are as follows.
In the panel described in (1), since the plurality of fine materials constituting the core plate are not adhered 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 level.

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

[Brief description of 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 heart 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 material 32, 33, 34, 42, 43, 44 Wood thin plate 35, 45, 52 Mandrel 36,46,53 Fine material 37, 47, 54 Wood board 38, 48, 55 surface decorative material

   ─────────────────────────────────────────────────── ─── Continued front page       (56) References JP-A-52-3814 (JP, A)                 Actual development Sho 51-127971 (JP, U)                 Actual Kaihei 3-84350 (JP, U)                 57-106935 (JP, U)

Claims (7)

(57) [Claims] 1. A mandrel formed by a plurality of thin materials arranged in parallel in a non-adhesive state so as to absorb expansion and contraction , and an adhesive agent is applied to each of the front surface and the back surface of the mandrel. At least one of the wood thin plates laminated on the front and back surfaces of the core plate, at least one of the wood thin plates being different from the fiber direction of the core plate. A panel that has a direction. 2. Of the three wood thin plates laminated respectively on the front and back surfaces of the core plate, the wood thin plates constituting the inner layer and the outer layer have a fiber direction different from the fiber direction of the core plate, and an intermediate layer. The panel of claim 1, wherein the wood lamellas that make up the layer have the same fiber direction as the fiber direction of the mandrel. 3. The panel according to claim 2, wherein the wood thin plates forming the inner layer and the outer layer are formed thicker than the wood thin plates forming the intermediate layer. 4. The panel according to claim 2, wherein the wood thin plate forming the intermediate layer is formed thicker than the wood thin plates forming the inner layer and the outer layer. 5. A plurality of thin materials absorb expansion and contraction thereof.
As described above, a plurality of core plates formed by being juxtaposed in a non-adhesive state are laminated with an intermediate material adhered to the core plates with an adhesive, and the outermost surface of the core plates is attached. A panel in which wooden boards are laminated with an adhesive. 6. The panel according to claim 5, wherein the intermediate material is formed by three wood thin plates sequentially laminated with an adhesive, and the fiber directions of the adjacent wood thin plates are different from each other. . 7. The panel according to claim 6, wherein in the intermediate member, the wood thin plate adjacent to the core plate has a fiber direction different from a fiber direction of the core plate.