JP3023652B2 - Laminated board - Google Patents
Laminated boardInfo
- Publication number
- JP3023652B2 JP3023652B2 JP7254376A JP25437695A JP3023652B2 JP 3023652 B2 JP3023652 B2 JP 3023652B2 JP 7254376 A JP7254376 A JP 7254376A JP 25437695 A JP25437695 A JP 25437695A JP 3023652 B2 JP3023652 B2 JP 3023652B2
- Authority
- JP
- Japan
- Prior art keywords
- wood fiber
- board
- fiber board
- wood
- laminated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Laminated Bodies (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、構造材料を初め建
築の表装、内装および家具等に使用される積層板に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated board used for structural materials, as well as for building exterior, interior and furniture.
【０００２】[0002]
【従来技術】従来積層板としては、単板をその繊維方向
を互いに直交させて積層接着した合板、単板の繊維方向
を同一方向に積層接着した平行合板（Ｌ．Ｖ．Ｌ．）が
知られており、挽材では得られない大きな寸法の板を多
量に安定して供給することができ、しかも寸法安定性に
も優れているなど、現在の建築材料の一材料としてなく
てはならないものである。2. Description of the Related Art Conventionally, as a laminated board, a plywood in which veneers are laminated and bonded with their fiber directions orthogonal to each other, and a parallel plywood (LVVL) in which the fiber directions of veneers are laminated and bonded in the same direction are known. It is indispensable as one of the current building materials, as it can stably supply large-sized boards that cannot be obtained with sawn timber in a large amount and has excellent dimensional stability. It is.
【０００３】[0003]
【発明が解決しようとする課題】しかし、この合板は、
天然木材を薄く剥ぎ取った単板を積層接着し製造するた
め、天然資源の枯渇問題が世界的に大きく取り上げら
れ、原材料である原木を伐採することが困難になると共
に、原木の質が低下することによって、単板に使用する
良質の単板を多量に得ることが難しくなり、品質の良い
合板を多量に市場に供給することが困難となる。この問
題は今後ますます深刻化することが予測される。本発明
は合板に代わる代替え品を提供しようとする。However, this plywood is
Due to the lamination and production of veneers made of natural wood stripped thinly, the issue of depletion of natural resources has become a major issue worldwide, making it difficult to cut down the raw wood, and deteriorating the quality of the raw wood This makes it difficult to obtain a large amount of high quality veneer used for veneer, and it becomes difficult to supply a large amount of high quality plywood to the market. This problem is expected to become more serious in the future. The present invention seeks to provide an alternative to plywood.
【０００４】[0004]
【課題を解決するための手段】本発明は、合板の代替え
品として使用できる新規な積層板を提供することを目的
として鋭意研究の結果完成されたものである。すなわち
本発明は、合板または木削片板からなる基板２の表面に
木質繊維板３が積層一体化され、該木質繊維板３の裏面
に長手方向と直交方向に複数本の溝４が形成されている
ことを特徴とする積層板である。DISCLOSURE OF THE INVENTION The present invention has been accomplished as a result of intensive studies for the purpose of providing a novel laminate which can be used as a substitute for plywood. That is, in the present invention, the wood fiber board 3 is laminated and integrated on the surface of the substrate 2 made of a plywood or a wood chip board, and a plurality of grooves 4 are formed on the back surface of the wood fiber board 3 in a direction orthogonal to the longitudinal direction. It is a laminate characterized by having.
【０００５】合板または木削片板からなる基板２と木質
繊維板３との含水率の変化に伴う寸法変化は異なり、こ
れらの板材を積層一体化したものは、両者の寸法変化の
差が原因となり反りが生じやすいものである。しかし、
本発明の構成によれば、木質繊維板３の裏面に溝４が形
成されることにより、木質繊維板３のヤング率が減少す
ることになり、寸法変化により生ずる木質繊維板３の応
力を減少させ反りの発生を抑制することができる。The dimensional change due to the change in the water content of the board 2 made of plywood or wood chipboard and the wood fiber board 3 is different. And warping is likely to occur. But,
According to the configuration of the present invention, since the grooves 4 are formed on the back surface of the wood fiber board 3, the Young's modulus of the wood fiber board 3 is reduced, and the stress of the wood fiber board 3 caused by the dimensional change is reduced. The occurrence of warpage can be suppressed.
【０００６】[0006]
【発明の実施の形態】図１は本発明の積層板１の断面図
の一例を示すものであり、必要に応じ側面に嵌合用の実
が形成された基板２の表面に木質繊維板３が貼着され、
木質繊維板３の裏面には溝４が木質繊維板３の長手方向
（図中左右方向）と直交する方向に複数本形成されてい
る。FIG. 1 shows an example of a sectional view of a laminated board 1 according to the present invention. A wood fiber board 3 is provided on a surface of a substrate 2 having a fitting nut formed on a side surface as necessary. Affixed,
A plurality of grooves 4 are formed on the back surface of the wood fiber board 3 in a direction orthogonal to the longitudinal direction (left-right direction in the figure) of the wood fiber board 3.
【０００７】本発明の基板２としては、単板をその繊維
方向を互いに直交させて積層接着した合板、単板の繊維
方向を同一方向に積層接着した平行合板などを使用する
ことができる。また、木削片に接着剤を加えて圧締成形
して得られる木削片板を使用することができ、木削片の
形状が異なるパーティクルボード、ウエハーボード、フ
レークボード、ストランドボード、スティックボードな
どを使用することができる。As the substrate 2 of the present invention, a plywood in which veneers are laminated and bonded with their fiber directions orthogonal to each other, a parallel plywood in which the fiber directions of veneers are laminated and bonded in the same direction, and the like can be used. In addition, a wood chip plate obtained by adding an adhesive to the wood chip and pressing it can be used, and a particle board, a wafer board, a flake board, a strand board, a stick board having a different wood chip shape can be used. Etc. can be used.
【０００８】また、木質繊維板３としては、針葉樹また
は広葉樹の原木廃材を切削した木材チップを常法により
解繊して得られる木質繊維を、乾式法により加熱圧締成
型したもので、板材の平均比重０．３５以上１．２以下
の木質繊維板３を使用することができる。The wood fiber board 3 is obtained by heating and pressing a wood fiber obtained by cutting a wood chip obtained by cutting a conifer or hardwood waste wood by an ordinary method, by a dry method, and pressing the wood fiber. A wood fiber board 3 having an average specific gravity of 0.35 or more and 1.2 or less can be used.
【０００９】このような木質繊維板３は、加熱圧締の際
の木質繊維板内の水分の移動、樹脂の含有量および熱の
伝わり方などの影響により、表裏面近傍に板材の中心部
分よりも比重が著しく高い硬質層（黒色岩盤層）３ａ，
３ｂが形成されたものであり、この硬質層３ａが木質繊
維板３のヤング率を高めるとともに、板材表面の硬度を
高めるため、板材表面への落球試験、ハイヒールおよび
キャスター等による局所的に加重が加わっても凹みにく
い特性を有するものである。Such a wood fiber board 3 is located near the front and back surfaces of the wood fiber board 3 from the center of the board material due to the effects of moisture transfer, resin content, and heat transmission in the wood fiber board during heating and pressing. Also has a hard layer (black rock layer) 3a having a remarkably high specific gravity.
3b, the hard layer 3a increases the Young's modulus of the wood fiber board 3 and increases the hardness of the board surface, so that a load is locally applied by a ball drop test, high heels, casters, etc. on the board surface. It has a characteristic that it is hard to be dented even when added.
【００１０】また、木質繊維板３の裏面に形成される溝
４は、少なくとも木質繊維板３の長さ方向と直交する方
向に複数本形成される。これは基板２および木質繊維板
３の両者共に幅方向と長さ方向の含水率変化に伴う寸法
変化がほぼ等しく、その変化量は基板２の方が小さい。
このため、長さ方向と幅方向では寸法の長い長さ方向に
おいて基板２と木質繊維板３との寸法変化量の差が大き
くなり、反りを発生させることとなる。Further, a plurality of grooves 4 formed on the back surface of the wood fiber board 3 are formed at least in a direction orthogonal to the length direction of the wood fiber board 3. This is because both the substrate 2 and the wood fiber board 3 have almost the same dimensional change due to the change in the water content in the width direction and the length direction, and the change amount is smaller in the substrate 2.
For this reason, the difference in the amount of dimensional change between the substrate 2 and the wood fiber board 3 in the length direction, which is longer in the length direction and the width direction, increases, and warpage occurs.
【００１１】これが、木質繊維板３の裏面に長さ方向と
直交する方向に溝を形成することにより、木質繊維板３
の長さ方向のヤング率が減少することとなり、木質繊維
板３お含水率変化にともなう寸法変化量は同じでも、そ
の変化が基板２に働きかける応力は抑制されることとな
り、反りの発生を防止することができる。By forming a groove in the back surface of the wood fiber board 3 in a direction perpendicular to the length direction, the wood fiber board 3
The Young's modulus in the length direction of the wood fiber board 3 is reduced, and even if the amount of dimensional change due to the change in the moisture content of the wood fiber board 3 is the same, the stress acting on the substrate 2 due to the change is suppressed, and the occurrence of warpage is prevented. can do.
【００１２】さらに、木質繊維板３の長さ方向と平行方
向にも溝を形成することにより幅方向における木質繊維
板３のヤング率も減少し、同様に幅方向の反りも防止す
ることができる。また、この溝４の深さは少なくとも木
質繊維板の裏面側硬質層３ｂを切断する深さ以上に深く
形成する。Further, by forming grooves in the direction parallel to the length direction of the wood fiber board 3, the Young's modulus of the wood fiber board 3 in the width direction is reduced, and similarly, the warpage in the width direction can be prevented. . Further, the depth of the groove 4 is formed at least deeper than the depth at which the back side hard layer 3b of the wood fiber board is cut.
【００１３】この裏面側硬質層３ｂを切断することによ
り、木質繊維板３のヤング率が大きく減少し、それより
深く形成してもさほどヤング率が減少しない。逆に表面
側の硬質層３ａに至るほど深く溝を形成するとヤング率
は減少するものの、木質繊維板３の溝を形成した部分と
形成してない部分における強度の差が大きくなり、木質
繊維板３の表面に荷重が加えられた場合など、溝４の形
成されていない部分にその負荷が集中し破損し易くなり
好ましくない。By cutting the back side hard layer 3b, the Young's modulus of the wood fiber board 3 is greatly reduced, and even if it is formed deeper, the Young's modulus does not decrease so much. Conversely, if the grooves are formed deeper to reach the hard layer 3a on the surface side, the Young's modulus decreases, but the difference in strength between the grooved portion and the non-groove portion of the wood fiber board 3 increases, and the wood fiber board 3 For example, when a load is applied to the surface of No. 3, the load is concentrated on a portion where the groove 4 is not formed, and the portion is easily damaged, which is not preferable.
【００１４】また、本発明の積層板の木質繊維板３表面
には必要に応じ化粧シート５を貼着することもできる。
化粧シートとしては天然木材を切削して得られる天然突
板、人工突板、および不織布、紙、合成樹脂シートを裏
打ちした突板シートまたは、２０−４０ｇ／ｍ２の化粧
紙、３２−５００ｇ／ｍ２の不織布、５０ｇ／ｍ２のパ
ーチメント紙等の柄摸様印刷や単色の塗装が施されたも
の、あるいは、化粧シート接着後、上塗り工程を設ける
こともできる。Further, a decorative sheet 5 can be adhered to the surface of the wood fiber board 3 of the laminated board of the present invention, if necessary.
As a decorative sheet, a natural veneer obtained by cutting natural wood, an artificial veneer, and a veneer sheet lined with a nonwoven fabric, paper, a synthetic resin sheet, or a decorative paper of 20 to 40 g / m 2 , or a 32- to 500 g / m 2 decorative paper A non-woven fabric, a pattern-printed one such as 50 g / m 2 parchment paper or a single-colored coating, or a topcoating step after bonding a decorative sheet may be provided.
【００１５】これら化粧シート５の接着は、熱可塑性接
着剤例えば酢酸ビニル樹脂等に耐水性向上のために熱硬
化性樹脂または尿素粉末等を混入したものを用いること
ができる。また、本発明の積層板は、突板単板を貼着し
た場合でも、積層板表面の表層木質繊維層３の平滑性に
優れ吸放湿による収縮膨張が小さいという性質により突
板単板に割れが生ずることがない。For bonding these decorative sheets 5, it is possible to use a thermoplastic adhesive such as vinyl acetate resin mixed with a thermosetting resin or urea powder for improving water resistance. In addition, even when the veneer veneer is adhered, the veneer veneer is cracked due to the property that the surface wood fiber layer 3 on the surface of the veneer is excellent in smoothness and the contraction and expansion due to moisture absorption and desorption is small. Will not occur.
【００１６】[0016]
【発明の効果】本発明による積層板は、従来の合板また
は木削片板に木質繊維板を組み合わせたものであり、こ
の木質繊維板は単板として使用できない欠点のある原木
を小さく破砕あるいは解繊したものを用いて得られるも
のであるため、資源の有効利用となり自然破壊の防止に
役立つことができる。また、基板と木質繊維板とは異な
る板材であり、特に両者の含水率の変化に伴う寸法変化
が異なり、これらの板材を積層一体化したものは両者の
寸法変化の差が原因となり反りが生じやすいものであ
る。しかし、本発明の構成によれば、木質繊維板の裏面
に溝が形成されることにより、木質繊維板のヤング率が
減少することになり、寸法変化により生ずる木質繊維板
の応力を減少させ反りの発生を抑制することができるも
のである。The laminate according to the present invention is obtained by combining a conventional plywood or a wood chipboard with a wood fiber board, and this wood fiber board is used to crush or disassemble a raw wood having a defect that cannot be used as a veneer. Since it is obtained using fine fibers, it is possible to effectively use resources and to help prevent natural destruction. In addition, the board and the wood fiber board are different board materials, and the dimensional change due to the change in the water content of both is different, and warpage occurs due to the difference in dimensional change between the two when these board materials are laminated and integrated. It is easy. However, according to the configuration of the present invention, since the grooves are formed on the back surface of the wood fiber board, the Young's modulus of the wood fiber board is reduced, and the stress of the wood fiber board caused by the dimensional change is reduced and the warp is reduced. Can be suppressed.
【００１７】さらに、積層板の表面は木質繊維層により
構成されるため、圧縮強度が強く、平滑性にも優れたも
のであり、吸放湿による収縮膨張が小さいため、表面に
突板シートを貼着しても割れが生じにくいなど優れた特
性を有するものである。Furthermore, since the surface of the laminate is made of a wood fiber layer, it has high compressive strength and excellent smoothness, and has a small shrinkage and expansion due to moisture absorption and desorption. It has excellent characteristics such as hardly causing cracks even when worn.
【図１】 本発明積層板の一部側面図、FIG. 1 is a partial side view of a laminate of the present invention,
【図２】 図１の要部拡大図、FIG. 2 is an enlarged view of a main part of FIG. 1,
【図３】 化粧シート５を貼着した場合の側面図、FIG. 3 is a side view when a decorative sheet 5 is attached.
１：積層板、２：基板、３：木質繊維板、３ａ：表面側
の硬質層、３ｂ：裏面側硬質層、４：溝。1: laminated board, 2: substrate, 3: wood fiber board, 3a: front hard layer, 3b: back hard layer, 4: groove.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平６−108626（ＪＰ，Ａ) 特開 平６−240850（ＪＰ，Ａ) 特開 平10−337713（ＪＰ，Ａ) 実開 平６−87543（ＪＰ，Ｕ) 実用新案登録2583065（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B27D 1/04 B27N 3/00 - 3/04 E04F 15/04 601 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-108626 (JP, A) JP-A-6-240850 (JP, A) JP-A-10-337713 (JP, A) 87543 (JP, U) Utility model registration 2583065 (JP, Y2) (58) Fields investigated (Int. Cl. 7 , DB name) B27D 1/04 B27N 3/00-3/04 E04F 15/04 601
Claims (2)
に木質繊維板が積層一体化され、該木質繊維板の裏面に
少なくとも長手方向と直交方向に複数本の溝か形成され
ていることを特徴とする積層板。1. A wood fiber board is laminated and integrated on the surface of a board made of plywood or wood chipboard, and a plurality of grooves are formed on the back surface of the wood fiber board at least in a direction orthogonal to the longitudinal direction. A laminated plate characterized by the above.
硬質層を切断する深さ以上に深く形成されてなることを
特徴とする請求項１記載の積層板。2. The laminated board according to claim 1, wherein the groove of the wood fiber board is formed deeper than the cutting depth of the back side hard layer of the wood fiber board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7254376A JP3023652B2 (en) | 1995-08-28 | 1995-08-28 | Laminated board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7254376A JP3023652B2 (en) | 1995-08-28 | 1995-08-28 | Laminated board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0957706A JPH0957706A (en) | 1997-03-04 |
| JP3023652B2 true JP3023652B2 (en) | 2000-03-21 |
Family
ID=17264132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7254376A Expired - Lifetime JP3023652B2 (en) | 1995-08-28 | 1995-08-28 | Laminated board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3023652B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279748A (en) * | 2002-01-18 | 2003-10-02 | Nitto Denko Corp | Polarization film and image display |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06108626A (en) * | 1992-09-22 | 1994-04-19 | Asahi Utsudo Tec Kk | Woody composite facing |
| JP2593779B2 (en) * | 1993-02-15 | 1997-03-26 | 株式会社ノダ | Floor material |
| JP2583065Y2 (en) * | 1993-03-30 | 1998-10-15 | 株式会社ノダ | Floor material |
| JP2592077Y2 (en) * | 1993-06-01 | 1999-03-17 | 朝日ウッドテック株式会社 | Composite decorative flooring |
| JPH10337713A (en) * | 1997-06-05 | 1998-12-22 | Dantani Plywood Co Ltd | Composite material using medium quality fiber plate for surface base material |
-
1995
- 1995-08-28 JP JP7254376A patent/JP3023652B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0957706A (en) | 1997-03-04 |
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