JP3465358B2 - Surface decorative wood board - Google Patents
Surface decorative wood boardInfo
- Publication number
- JP3465358B2 JP3465358B2 JP16843894A JP16843894A JP3465358B2 JP 3465358 B2 JP3465358 B2 JP 3465358B2 JP 16843894 A JP16843894 A JP 16843894A JP 16843894 A JP16843894 A JP 16843894A JP 3465358 B2 JP3465358 B2 JP 3465358B2
- Authority
- JP
- Japan
- Prior art keywords
- wood
- adhesive
- laminated
- board
- wood board
- 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
- Veneer Processing And Manufacture Of Plywood (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、住宅などの内装材に用
いられる表面平滑性に優れて美感的にも好ましく、薄物
化粧木材などの表面化粧材を貼ることが可能であり、か
つ耐水性、耐湿性に優れた表面化粧木質板に関する。INDUSTRIAL APPLICABILITY The present invention is excellent in surface smoothness used for interior materials for houses and the like, and is also aesthetically pleasing. It is possible to apply a surface decorative material such as thin decorative wood and is water resistant. , A surface-decorated wood board having excellent moisture resistance.
【０００２】[0002]
【従来の技術】近年、木材資源の不足や、森林の保護が
問題となってきており、森林伐採は今後ますます困難に
なることは明らかである。したがって、原木を大量に使
用して製造される合板などの板材は、その供給が不安定
あるいは供給不足となり、価格も高騰することが予想さ
れる。このため、従来廃材とされていた木材薄片を利用
したＯＳＢと呼ばれる方向性木材薄片集成板が合板に代
わって用いられつつある。2. Description of the Related Art In recent years, shortage of timber resources and protection of forests have become problems, and it is clear that deforestation will become more difficult in the future. Therefore, it is expected that the supply of plate materials such as plywood manufactured by using a large amount of raw wood will be unstable or insufficient, and the price will also rise. For this reason, a directional timber laminated plate called OSB, which uses wood flakes that have been conventionally discarded, is being used instead of plywood.
【０００３】この木材薄片を用いた方向性木材薄片集成
板は、一般に、原材料となる木材薄片原材料をバインダ
ーで接着し、成形一体化して形成される。その際、原材
料の寸法が小さくなるに従い、得られる方向性木材薄片
集成板は均一になり、表面も平滑になるが、強度、剛性
は低下し、密度は増加する。逆に原材料の寸法を大きく
すると、木材本来が持っている強度、密度に近づいて行
くが、このような方向性木材薄片集成板は不均質で、表
面の凹凸も大きくなる傾向がある。また、住宅用内装材
として用いるためには、表面の化粧性が要求されるた
め、木材薄片集成板の表面に化粧単板などの表面化粧材
を貼着することが必要となる。A directional wood flakes laminated plate using this wood flakes is generally formed by adhering a wood flakes raw material as a raw material with a binder and molding and integrating them. At that time, as the size of the raw material becomes smaller, the obtained directional wood thin plate laminated plate becomes uniform and the surface becomes smooth, but the strength and rigidity decrease and the density increases. On the contrary, when the size of the raw material is increased, the strength and density of the original wood are approached, but such a directional wood thin plate laminate tends to be non-homogeneous and the surface unevenness tends to increase. Further, in order to use it as an interior material for a house, surface cosmetic properties are required, and therefore it is necessary to attach a surface decorative material such as a decorative veneer to the surface of the laminated thin wood plate.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、薄物表
面化粧材を貼着したもの、例えば、薄物化粧単板を貼着
した床材や、塩化ビニル印刷フィルムを貼着したカラー
パネルなどにおいては、方向性木材薄片集成板の表面の
凹凸が表面化粧材の表面に現出し、美観的にも好ましく
ないという問題があった。However, in the case where a thin surface decorative material is adhered, for example, a floor material to which a thin decorative veneer is adhered, a color panel to which a vinyl chloride printing film is adhered, etc. There is a problem in that unevenness of the surface of the laminated sheet of functional wood appears on the surface of the surface decorative material, which is aesthetically unfavorable.
【０００５】また、方向性木材薄片集成板は一般に湿分
を吸収し易いので、日本のように多湿地域では、吸湿す
ると表面化粧材との寸法差が大きくなり、そり、ねじ
れ、剥離などが生じる恐れがあった。さらに、吸湿、脱
湿による個々の木材薄片の膨れや縮みの度合の違いによ
り、方向性木材薄片集成板への薄物化粧単板などの表面
化粧材の貼着が困難な場合も生じていた。In addition, since the directional wood thin laminated plate generally absorbs moisture easily, in a high humidity region such as Japan, when moisture is absorbed, the dimensional difference from the surface decorative material becomes large, and warping, twisting, peeling, etc. occur. I was afraid. Furthermore, due to the difference in the degree of swelling and shrinkage of individual wood flakes due to moisture absorption and dehumidification, it has been difficult in some cases to attach a surface decorative material such as a thin decorative veneer to a directional timber laminated plate.
【０００６】本発明は、これらの事情に鑑みてなされた
ものであって、表面が平滑で美観的に好ましく、表面化
粧材を貼ることが可能であり、かつ耐湿性、耐水性に優
れた表面化粧木質板を提供することを目的としている。The present invention has been made in view of these circumstances, and the surface is smooth and aesthetically pleasing, a surface decorative material can be applied, and the surface is excellent in moisture resistance and water resistance. The purpose is to provide a decorative wood board.
【０００７】[0007]
【課題を解決するための手段】本発明の請求項１記載の
表面化粧木質板は、木材薄片集成板の少なくとも片面に
方向性木材薄片集成板を積層した積層木質板の両面に、
充填剤を接着剤の固形分総量の１０〜５０重量％含有す
るゴム変性メラミン・ユリア樹脂からなる接着皮膜を形
成し、これら接着皮膜のうち方向性木材薄片集成板上に
形成された接着皮膜の一方に表面化粧材を貼り付けたこ
とを特徴とする。また、請求項２記載の表面化粧木質板
は、上記請求項１記載の表面化粧木質板において、積層
木質板の両面に形成される接着皮膜のうち表面化粧材が
貼り付けられない方の接着皮膜内に、該接着皮膜が形成
される積層木質板の面に沿って紙層を埋設したことを特
徴とする。A surface-decorated wood board according to claim 1 of the present invention is a laminated wood board in which a directional wood piece laminated board is laminated on at least one side of a wood piece laminated board ,
Contains 10 to 50% by weight of the filler, based on the total solid content of the adhesive.
An adhesive coating made of rubber-modified melamine-urea resin is formed, and a surface decorative material is attached to one of the adhesive coatings formed on the directional wood thin plate laminate. Further, the surface-decorated wood board according to claim 2 is the surface-decorated wood board according to claim 1, wherein one of the adhesive films formed on both surfaces of the laminated wood board, to which the surface decorative material is not attached, A paper layer is embedded therein along the surface of the laminated wood board on which the adhesive film is formed.
【０００８】[0008]
【作用】請求項１記載の表面化粧木質板にあっては、積
層木質板の両面に接着剤からなる接着皮膜を形成するこ
とにより、方向性木材薄片集成板の凸凹部のある表面に
表面化粧材を貼り付ける際、接着皮膜をなす材料である
接着剤が上記凸凹部の凹部を埋めて平滑面を形成するの
で、貼り付けられた表面化粧材の表面にも凹凸が表われ
ることはない。また、接着部に空隙が生じないので、接
着強度が改善されるとともに外部からの水分や湿気を方
向性木材薄片集成板にまで浸透させない。また、積層木
質板の両面に接着皮膜を形成するので、湿分の吸い込み
が少なくなり、耐水・耐湿性能が向上する。In the surface-decorated wood board according to the first aspect of the present invention, an adhesive coating made of an adhesive is formed on both surfaces of the laminated wood board so that the surface-decorated surface of the directional wood thin plate laminated board has convex and concave portions. When the material is attached, the adhesive, which is the material forming the adhesive film, fills the concave portions of the convex and concave portions to form a smooth surface, so that the surface of the attached surface decorative material does not have irregularities. In addition, since no voids are formed in the adhesive portion, the adhesive strength is improved, and moisture and humidity from the outside do not permeate into the directional wood thin plate laminate. In addition, since the adhesive film is formed on both surfaces of the laminated wood board, the absorption of moisture is reduced and the water resistance and moisture resistance are improved.
【０００９】また、請求項２記載の表面化粧木質板にあ
っては、上記請求項１記載の表面化粧木質板において、
積層木質板の両面に形成される接着皮膜のうち表面化粧
材が貼り付けられない方の接着皮膜（以下、裏側の接着
皮膜と略記する。）内に、該接着皮膜が形成される積層
木質板の面に沿って紙層を埋設することにより、裏側の
接着皮膜をなす接着剤が上記紙層によって補強され、強
度が向上する。また、請求項１記載の表面化粧木質板よ
りも裏側の接着皮膜の形成が容易であり、また、厚みを
厚くし易い。さらに、請求項１記載の表面化粧木質板に
比べて、表面化粧材が設けられている表側と表面化粧材
が設けられていない裏側との強度の差が小さくなるの
で、表面化粧木質板の構造上のバランスがくずれること
が少なくなる。Further, in the surface-decorated wood board according to claim 2, in the surface-decorated wood board according to claim 1,
Laminated wood board in which the adhesive film is formed in the adhesive film (hereinafter abbreviated as the adhesive film on the back side) of the adhesive film formed on both sides of the laminated wood board on which the surface decorative material is not attached By embedding the paper layer along the surface of, the adhesive forming the adhesive film on the back side is reinforced by the paper layer, and the strength is improved. Further, it is easier to form an adhesive film on the back side than the surface-decorated wood board according to claim 1, and it is easy to increase the thickness. Further, as compared with the surface-decorated wood board according to claim 1, the difference in strength between the front side provided with the surface-decorated material and the back side not provided with the surface-decorated material becomes smaller, and thus the structure of the surface-decorated wood sheet. The top balance is less likely to break.
【００１０】以下、本発明の表面化粧木質材について詳
しく説明する。図１は本発明の請求項１記載の表面化粧
木質材の一例を示すものであり、図１中符号１は表面化
粧木質板である。この表面化粧木質板１は、芯層となる
木材薄片集成板２の両面に、表層となる方向性木材薄片
集成板３が積層されて積層木質板６とされ、この積層木
質板６の両面に接着皮膜７，７が形成され、さらにこれ
ら接着皮膜７，７の一方に表面化粧材８が貼り付けられ
たものである。The surface decorative wood material of the present invention will be described in detail below. FIG. 1 shows an example of the surface decorative wood material according to claim 1 of the present invention. In FIG. 1, reference numeral 1 is a surface decorative wood plate. This surface-decorated wooden board 1 is a laminated wooden board 6 in which a directional wooden thin laminated board 3 which is a surface layer is laminated on both sides of a wooden thin laminated board 2 which is a core layer. The adhesive coatings 7, 7 are formed, and the surface decorative material 8 is further attached to one of the adhesive coatings 7, 7.
【００１１】芯層となる木材薄片集成板２は、厚さ０．
４〜０．８ｍｍの木材薄片がバインダーで接着され、成
形一体化されたものである。この木材薄片は、長さが２
０〜１００ｍｍ、幅が２〜６０ｍｍの範囲内であること
が好ましい。これらの木材薄片としては、アカマツ、カ
ラマツ、エゾマツ、トドマツ、アスペン、ロッジポール
パインなどの薄片が好適に用いられるが、樹種は特に限
られるものではない。The wood thin laminated plate 2 serving as the core layer has a thickness of 0.
A thin wood piece of 4 to 0.8 mm is adhered with a binder and integrally molded. This piece of wood has a length of 2
It is preferable that the width is 0 to 100 mm and the width is 2 to 60 mm. As these wood flakes, flakes such as red pine, larch, ezo pine, todo pine, aspen, lodgepole pine, and the like are preferably used, but the tree species is not particularly limited.
【００１２】これらの木材薄片は好ましくは、発泡性バ
インダーにより接着され成形一体化されている。この発
泡性バインダーは、木材薄片集成板２中で木材薄片を相
互に結合させるとともに、それ自体が発泡するものであ
って、好ましくは木材薄片同士の交差点にのみ樹脂分を
存在させ、木材薄片の小さな隙間を、発泡セルで押し広
げるようにすることにより、樹脂分の使用量を少なく
し、木材薄片集成板２を低密度化させるものが用いられ
る。[0012] These wood flakes are preferably bonded and molded together by means of a foamable binder. This foamable binder is used to bond the wood flakes to each other in the wood flakes assembly plate 2 and to foam itself, and preferably the resin component is present only at the intersections of the wood flakes, and By using a foam cell to spread a small gap, the amount of the resin component used can be reduced and the density of the wood thin laminated plate 2 can be reduced.
【００１３】これらの発泡性バインダーとしては自己発
泡する発泡性ポリウレタン樹脂や、発泡剤によって発泡
するポリウレタン樹脂、ポリスチレン樹脂、エポキシ樹
脂、ポリ塩化ビニル樹脂、フェノール樹脂、ユリア樹脂
またはその混合物が挙げられる。発泡剤としては、揮発
性発泡剤であるＣＣｌ3 Ｆ、ＣＣｌ2 Ｆ2 、またはＣＣ
ｌ2 Ｆ−ＣＣｌＦ2 などや、熱分解性発泡剤である、ア
ゾジカルボンアミド、アゾヘキサヒドロベンゾニトリ
ル、２，２’−アドイソブチロニトリル、ベンゼンスル
ホヒドラジド、またはＮ，Ｎ’−ジニトロソ−Ｎ，Ｎ’
−ジメチルテレフタルアミドなどを挙げることができ
る。また、このような発泡性バインダーの木材薄片に対
する割合は、木材薄片１００重量部に対して、１０〜３
０重量部とするのが好ましい。Examples of these foamable binders include self-foaming foamable polyurethane resins, polyurethane resins foamed by a foaming agent, polystyrene resins, epoxy resins, polyvinyl chloride resins, phenol resins, urea resins and mixtures thereof. Examples of the foaming agent include volatile foaming agents such as CCl 3 F, CCl 2 F 2 or CC.
l 2 F-CClF 2 or the like, or a thermally decomposable foaming agent such as azodicarbonamide, azohexahydrobenzonitrile, 2,2′-adisobutyronitrile, benzenesulfohydrazide, or N, N′-dinitroso-. N, N '
-Dimethyl terephthalamide and the like can be mentioned. The ratio of the foamable binder to the wood flakes is 10 to 3 with respect to 100 parts by weight of the wood flakes.
It is preferably 0 part by weight.
【００１４】さらに、この木材薄片集成板２の厚さは５
〜１３ｍｍとするのが好ましく、その密度は０．４０〜
０．６５ｇ／ｃｍ3 とするのが好ましいが、木質板の使
用目的に合わせて任意に決定すればよい。密度が０．４
０ｇ／ｃｍ3 より小さいと板の強度が不十分になり、逆
に密度が０．６５ｇ／ｃｍ3 より大きい場合は、材料全
体の重量が増加して取扱いが困難になるからである。な
お、芯層となる木材薄片集成板２は、木材薄片の繊維方
向が表層の方向性木材薄片集成板３の繊維方向と直交す
ることが望ましいが、ランダムであってもよい。Further, the thickness of the laminated thin wood plate 2 is 5
It is preferable to be 13 mm, and the density is 0.40.
The amount is preferably 0.65 g / cm 3 , but may be arbitrarily determined according to the purpose of use of the wood board. Density 0.4
This is because if it is less than 0 g / cm 3 , the strength of the plate becomes insufficient, and conversely if the density is more than 0.65 g / cm 3 , the weight of the entire material increases and handling becomes difficult. In addition, it is desirable that the fiber direction of the wood flakes laminated plate 2 serving as the core layer is orthogonal to the fiber direction of the directional wood flakes laminated plate 3 of the surface layer, but it may be random.
【００１５】また、表層となる方向性木材薄片集成板３
は、厚さ０．１〜０．５ｍｍ、長さ２０〜１００ｍｍ、
幅２〜６０ｍｍの木材薄片が、ほぼ一定方向に揃えられ
て配列され、バインダーによって成形一体化されてい
る。ここで用いられるバインダーとしては、上記のよう
な発泡性バインダーを用いてもよいし、非発泡性バイン
ダーあるいはそれらの混合物のいずれでもよいが、実用
的には、成形用の金型からの離型性の点で、非発泡性バ
インダーを主体とするものが好ましい。それらの混合比
は、目的とする方向性木材薄片集成板３の密度と離型性
を考慮して、適宜変更することができる。Further, a directional wood thin plate laminated plate 3 serving as a surface layer
Has a thickness of 0.1 to 0.5 mm, a length of 20 to 100 mm,
Thin wood pieces having a width of 2 to 60 mm are aligned and arranged in a substantially constant direction, and are integrally formed by a binder. As the binder used here, the above-mentioned foamable binder may be used, or any non-foamable binder or a mixture thereof may be used, but practically, it is released from the mold for molding. From the viewpoint of properties, those mainly composed of a non-foaming binder are preferable. The mixing ratio of them can be appropriately changed in consideration of the density and releasability of the target directional wood thin plate laminate 3.
【００１６】また、この方向性木材薄片集成板３におけ
る、木材薄片に対するバインダーの割合は、木材薄片１
００重量部に対して５重量部以上とすることが好まし
い。木材薄片１００重量部に対し、バインダー添加量を
５重量部以下とすると、得られる方向性木材薄片集成板
３の強度が不十分になる。The ratio of the binder to the wood flakes in the directional wood flakes laminated plate 3 is such that the wood flakes 1
It is preferably 5 parts by weight or more with respect to 00 parts by weight. If the amount of the binder added is 5 parts by weight or less with respect to 100 parts by weight of the wood flakes, the strength of the obtained directional wood flakes laminated plate 3 will be insufficient.
【００１７】また、この方向性木材薄片集成板３の厚さ
は１〜５ｍｍ、好ましくは２〜３ｍｍとされるが、得よ
うとする木質板の総厚の１／５〜１／２でよい。さら
に、この方向性木材薄片集成板３の密度は０．４０〜
０．６５ｇ／ｃｍ3 とするのが好ましい。密度が０．４
０ｇ／ｃｍ3 より小さいと、板の強度が不十分になり、
逆に密度が０．６５ｇ／ｃｍ3 より大きい場合は、材料
全体の重量が増加して取扱いが困難になるからである。
なお、表層の方向性木材薄片集成板３は、芯層の木材薄
片集成板２の両面に形成し、３層の積層木質板とするの
が好ましい。The thickness of the directional wood thin plate laminated plate 3 is 1 to 5 mm, preferably 2 to 3 mm, but may be 1/5 to 1/2 of the total thickness of the wood plate to be obtained. . Furthermore, the density of the directional wood thin plate laminate 3 is 0.40 to
It is preferably 0.65 g / cm 3 . Density 0.4
If it is less than 0 g / cm 3 , the strength of the plate will be insufficient,
On the other hand, if the density is higher than 0.65 g / cm 3 , the weight of the entire material increases and handling becomes difficult.
In addition, it is preferable that the directional wood thin plate laminated board 3 of the surface layer is formed on both surfaces of the core layer wood thin laminated plate 2 to form a three-layer laminated wood board.
【００１８】また、この表層となる方向性木材薄片集成
板３に耐湿性、耐水性を付与するため、原材料である木
材薄片を予めアセチル化しておくのが好ましい。木材薄
片をアセチル化する場合は、その木材薄片を含水率３％
以下、好ましくは１％以下になるまで乾燥した後、酢
酸、無水酢酸、クロル酢酸などの気化蒸気に接触させて
気相中でアセチル化（アセチル化度１２〜２０％）する
のが好ましい。Further, in order to impart moisture resistance and water resistance to the directional wood flakes laminated plate 3 which is the surface layer, it is preferable to acetylate the wood flakes as the raw material in advance. When acetylating wood flakes, the wood flakes should have a water content of 3%.
Hereafter, it is preferable that after drying to 1% or less, contact with vaporized vapor such as acetic acid, acetic anhydride or chloroacetic acid to acetylate (acetylation degree 12 to 20%) in the vapor phase.
【００１９】上記接着皮膜７は、接着剤からなるもので
あり、ここで用いられる接着剤としては、この接着皮膜
７上に貼られる表面化粧材８表面への浸み出しが少ない
ものであることが好ましく、メラミン・ユリア樹脂、エ
チレン・酢酸ビニル樹脂エマルジョン、酢酸ビニル樹脂
エマルジョン、ゴム変性メラミン・ユリア樹脂エマルジ
ョンなどが挙げられるが、中でもゴム変性メラミン・ユ
リア樹脂が最適である。The above-mentioned adhesive film 7 is made of an adhesive, and the adhesive used here is such that there is little seepage to the surface of the surface decorative material 8 stuck on this adhesive film 7. Among them, melamine-urea resin, ethylene-vinyl acetate resin emulsion, vinyl acetate resin emulsion, rubber-modified melamine-urea resin emulsion and the like can be mentioned. Among them, rubber-modified melamine-urea resin is most suitable.
【００２０】このような接着剤には、該接着剤が方向性
木材薄片集成板２表面の凸凹部の凹部を埋めて平滑面が
より形成され易くするために、充填剤を添加しておくの
が好ましい。ここでの充填剤としては、ガラス粉、木
粉、炭酸カルシウム粉などが用いられ、また、これら充
填剤の粒度は特に限定されないが、平均粒子径２〜５０
０μｍの範囲のものが用いられる。このような充填剤の
接着剤中の含有量は、接着剤の固形分総量の１０〜５０
重量％程度とされ、含有量が１０重量％未満では方向性
木材薄片集成板２表面の凹凸が比較的大きいので、接着
剤を用いて表面化粧材８を貼り付けて乾燥させたときの
引けが大きく、表面化粧材８の表面にまで凹凸が表われ
る恐れがあり、一方５０重量％を超えると接着剤の接着
力が低下するとともに、固すぎて方向性木材薄片集成板
２の微細な凹部にまで緻密に充填されず、空隙を生じる
恐れがある。A filler is added to such an adhesive so that the adhesive fills the concaves and convexes on the surface of the directional wood thin plate laminated plate 2 and makes it easier to form a smooth surface. Is preferred. As the filler here, glass powder, wood powder, calcium carbonate powder, etc. are used, and the particle size of these fillers is not particularly limited, but the average particle size is 2 to 50.
Those having a range of 0 μm are used. The content of such a filler in the adhesive is 10 to 50 of the total solid content of the adhesive.
If the content is less than 10% by weight, the unevenness of the surface of the directional wood thin plate laminate 2 is relatively large. Therefore, the shrinkage when the surface decorative material 8 is stuck using an adhesive and dried. There is a possibility that unevenness may appear even on the surface of the surface decorative material 8. On the other hand, when it exceeds 50% by weight, the adhesive strength of the adhesive decreases and at the same time, it becomes too hard to form fine recesses in the directional wood thin plate laminate 2. May not be densely packed and voids may occur.
【００２１】また、上記接着剤には、着色剤が添加され
ていてもよい。ここでの着色剤としては、有機、無機の
染料、顔料のいずれでも使用可能であるが、普通は顔料
が用いられる。このような着色剤が接着剤に添加されて
いると、表面化粧材８が極めて薄い場合でも方向性木材
薄片集成板２の表面に表われる木材薄片模様を隠蔽する
ばかりでなく、また表面化粧材８の色調や深みを調整す
る作用があり、従ってこの着色剤の色調や濃度は、表面
化粧材８の光透過性や色調に応じて適宜選択される。A coloring agent may be added to the adhesive. As the colorant here, any of organic and inorganic dyes and pigments can be used, but pigments are usually used. When such a coloring agent is added to the adhesive, not only does the surface of the directional wood flakes laminated plate 2 hide the wood flakes pattern even when the surface decoration 8 is extremely thin, but also the surface decoration. 8 has the effect of adjusting the color tone and depth, and therefore the color tone and concentration of this colorant are appropriately selected according to the light transmittance and color tone of the surface decorative material 8.
【００２２】上記表面化粧材８としては、化粧単板、印
刷樹脂フィルム、化粧紙、布など公知のものを用いるこ
とができる。上記化粧単板としては、ナラ、ヒノキ、チ
ーク、ウォルナット、スプルースなどの樹種のものが用
いられ、厚さは０．１５〜０．８ｍｍ程度のものが用い
られるが、本発明では、特に薄物化粧単板の使用に関し
て効果があるので、０．２〜０．３ｍｍの化粧単板であ
ることが好ましい。さらに、このものの含水率は７〜８
％程度であることが好ましい。含水率がこれより高いも
のは接着効果を低下させるばかりでなく、さらに、接着
剤の水分が加算され、積層木質板６との水分の受授の際
に反りを生じる。また、含水率がこれより低すぎるもの
は、作業中に化粧単板が割れてロスを生じ、作業効率を
阻害するからである。上記印刷樹脂フィルムとしては、
厚さ０．２〜０．５ｍｍのポリエステルフィルム、塩化
ビニルフィルムなどに美麗な模様を印刷した印刷フィル
ムなどが用いられる。上記化粧紙、布としては、使用目
的に応じて、模様を施したものなど任意のものを用いる
ことができる。また、厚さは０．１〜０．５ｍｍのもの
が好ましい。また、表面化粧材８の種類はここに挙げた
ものばかりでなく、表面化粧木質板１の用途に応じて任
意のものを用いることができる。As the surface decorative material 8, known materials such as a decorative veneer, a printed resin film, a decorative paper, and a cloth can be used. As the decorative veneer, tree species such as oak, cypress, teak, walnut and spruce are used, and those having a thickness of about 0.15 to 0.8 mm are used. A decorative veneer having a thickness of 0.2 to 0.3 mm is preferable because it has an effect on the use of the veneer. Furthermore, the water content of this product is 7-8.
% Is preferable. If the water content is higher than this, not only the adhesive effect is lowered, but also the water content of the adhesive is added, so that a warp occurs when the water content is exchanged with the laminated wood board 6. Further, if the water content is too low, the decorative veneer is broken during the work to cause loss, which hinders work efficiency. As the printing resin film,
A printing film in which a beautiful pattern is printed on a polyester film or a vinyl chloride film having a thickness of 0.2 to 0.5 mm is used. As the decorative paper or cloth, any one such as a patterned paper can be used according to the purpose of use. The thickness is preferably 0.1 to 0.5 mm. Further, the types of the surface decorative material 8 are not limited to those listed here, and any one can be used depending on the application of the surface decorative wood board 1.
【００２３】次に、図１に示した表面化粧木質板１の製
法の一例を図２を用いて説明する。まず、熱圧板上にほ
ぼ同方向になるように非発泡性バインダーを塗布した表
層となる木材薄片を散布し、ついで、発泡性バインダー
を塗布した芯層となる木材薄片を表層と木材繊維の方向
が直交するように散布し、さらに、非発泡性バインダー
を塗布した表層となる木材薄片をほぼ同方向に並ぶよう
にして散布し、３層積層物とする。Next, an example of a method for manufacturing the surface decorative wood board 1 shown in FIG. 1 will be described with reference to FIG. First, spread the wood flakes coated with the non-foaming binder on the hot pressing plate in the same direction, and then spread the wood flakes coated with the foamable binder as the core layer in the direction of the surface and the wood fibers. Are crossed at right angles, and further, thin wood flakes coated with a non-foaming binder are spread so as to be aligned in substantially the same direction to form a three-layer laminate.
【００２４】ついで、熱圧成形機中でこの３層積層物に
熱圧を加えて熱圧同時成形して積層木質板６を得る。そ
の熱圧条件は、圧力が１〜２ＭＰａ、温度が１５０〜２
００℃、時間が目的とする厚み（ｍｍ）×５〜１２０秒
とすることが好ましい。ついで、上述のようにして成形
された積層木質板６の両面の方向性木材薄片集成板３，
３上に、接着皮膜７，７を形成するための接着剤を塗工
機を用いて塗布して接着皮膜７，７を形成する。ここで
の塗工機としては、例えばナチュラル・リバースコータ
（以下、ＮＲコータと略記する。）１０を用いるのが適
しており、その場合ＮＲコータ１０は積層木質板６の上
方および下方のそれぞれに設置される。Then, hot pressing is applied to the three-layer laminate in a hot pressing machine to perform simultaneous hot pressing to obtain a laminated wood board 6. The hot pressing conditions are a pressure of 1 to 2 MPa and a temperature of 150 to 2 MPa.
It is preferable that the temperature is 00 ° C. and the time is the target thickness (mm) × 5 to 120 seconds. Next, the laminated directional wood thin plate 3 on both sides of the laminated wood board 6 formed as described above.
An adhesive for forming the adhesive coatings 7, 7 is applied onto the surface 3 using a coater to form the adhesive coatings 7, 7. As the coating machine here, for example, a natural reverse coater (hereinafter abbreviated as NR coater) 10 is suitable, and in that case, the NR coater 10 is provided above and below the laminated wood board 6, respectively. Is installed.
【００２５】このＮＲコータ１０は、一方向に搬送され
る積層木質板６の接着剤が塗布される方向性木質薄片集
成板３面に接触しながら回転する一対のローラ、すなわ
ちＮローラ１１およびＲローラ１２を有している。この
Ｎローラ１１は、積層木質板６の進行方向と同一（ナチ
ュラル）方向に駆動回転するものであり、一方Ｒローラ
１２は上記Ｒローラ１１の前方に間隙を隔てて配置さ
れ、積層木質板６の進行方向と逆（リバース）方向に駆
動回転するようになっている。これらＮローラ１１、Ｒ
ローラ１２にはそれぞれ接触してＮローラ用ドクターロ
ーラ１１ａ、Ｒローラ用ドクターローラ１２が設けられ
ている。また、Ｎローラ１１とＮローラ用ドクターロー
ラ１１ａ、およびＲローラ１２とＲローラ用ドクターロ
ーラ１２ａのそれぞれの接触部の外方にはＮローラ用接
着剤槽１３、Ｒローラ用接着剤槽１４が設けられ、これ
らから接着皮膜７を形成するための接着剤７ａが上記接
触部に供給できるようになっている。The NR coater 10 is a pair of rollers that rotate while being in contact with the surface of the directional wood thin laminated plate 3 to which the adhesive of the laminated wood plate 6 conveyed in one direction is applied, that is, N roller 11 and R roller. It has a roller 12. The N roller 11 is driven to rotate in the same (natural) direction as the traveling direction of the laminated wooden board 6, while the R roller 12 is arranged in front of the R roller 11 with a gap, and the laminated wooden board 6 Drive rotation is performed in the reverse direction (reverse direction). These N rollers 11, R
An N roller doctor roller 11a and an R roller doctor roller 12 are provided in contact with the rollers 12, respectively. Further, an N-roller adhesive tank 13 and an R-roller adhesive tank 14 are provided outside the contact portions of the N roller 11 and the N roller doctor roller 11a, and the R roller 12 and the R roller doctor roller 12a, respectively. An adhesive 7a for forming the adhesive film 7 is provided from these and can be supplied to the contact portion.
【００２６】Ｎローラ１１とドクターローラ１１ａとの
接触部に供給された接着剤７ａは、その接触界面を通過
することによって量が調整され、Ｎローラ１１に付着し
て送られ、方向性木材薄片集成板５の表面に塗布され
る。塗布された接着剤７ａは、そのまま方向性木材薄片
集成板５表面上に載ってＲローラ１２に送られる。Ｒロ
ーラ１２は、積層木質板６と逆方向に回転しているの
で、Ｒローラ１２と方向性木材薄片集成板５との接触部
で接着剤７ａが方向性木材薄片集成板５の凹部に押し込
まれ、空隙を埋めて充填されると同時に表面が平滑化さ
れ、平坦な接着面を有する接着皮膜７が形成される。こ
こで、必要に応じて、Ｒローラ用接着剤槽１４からＲロ
ーラ１２とＲローラ用ドクターコータ１２ａとの接触部
に接着剤７ａを供給することによって、該接触部で調節
された量の接着剤７ａを上記接着皮膜７に補給すること
もできる。従って、このようなＮＲコータ１０が積層木
質板６の上方および下方のそれぞれに設置されているの
で、積層木質板６の両面に平坦な接着面を有する接着皮
膜７，７が形成される。The amount of the adhesive 7a supplied to the contact portion between the N roller 11 and the doctor roller 11a is adjusted by passing through the contact interface, and the amount of the adhesive 7a is attached to the N roller 11 to be sent. It is applied to the surface of the laminated plate 5. The applied adhesive 7a is directly placed on the surface of the directional wood thin plate assembly plate 5 and sent to the R roller 12. Since the R roller 12 is rotating in the direction opposite to the laminated wooden board 6, the adhesive 7a is pushed into the concave portion of the directional wood thin plate assembly 5 at the contact portion between the R roller 12 and the directional wood thin plate assembly plate 5. Then, the voids are filled and filled, and at the same time, the surface is smoothed and an adhesive film 7 having a flat adhesive surface is formed. Here, if necessary, the adhesive 7a is supplied from the R-roller adhesive agent tank 14 to the contact portion between the R-roller 12 and the R-roller doctor coater 12a, so that the amount of adhesive adjusted at the contact portion is increased. The agent 7a can be replenished to the adhesive film 7. Therefore, since such an NR coater 10 is installed above and below the laminated wooden board 6, the adhesive coatings 7, 7 having flat adhesive surfaces are formed on both surfaces of the laminated wooden board 6.
【００２７】ここで、接着皮膜７，７を形成するための
接着剤を塗布する方法としては、手コテを用いて手作業
で塗布することもできるが、生産性と塗布の均一性を考
慮すると、塗工機を用いることが好ましい。接着皮膜
７，７を形成するための接着剤の塗布量は、方向性木材
薄片集成板３表面の凹凸部の程度に依存するので必ずし
も一定しないが、一般的には凹部を微細な空隙まで埋
め、さらに凸部も薄い塗膜で覆うに十分な量を実験によ
って決定することが好ましく、普通は５０〜１５０ｇ／
ｍ2 程度とされる。また、この接着剤の塗布に先だっ
て、方向性木材薄片集成板３，３の表面をサンディング
しておけば、毛羽状に突出した木繊維が除去されるの
で、接着剤が微細な凹部にまでよく侵入し、密着性、耐
水性、耐湿性に優れた接着皮膜７，７を形成することが
できる。また、接着剤の使用量を少なくすることができ
る。Here, as a method of applying the adhesive for forming the adhesive films 7 and 7, it is possible to apply it manually by using a hand iron, but in view of productivity and uniformity of application. It is preferable to use a coating machine. The amount of adhesive applied to form the adhesive films 7 and 7 is not necessarily constant because it depends on the degree of unevenness on the surface of the directional wood thin plate assembly plate 3, but generally the recesses are filled up to minute voids. It is preferable to experimentally determine an amount sufficient to cover the convex portion with a thin coating film, and usually 50 to 150 g /
It is about m 2 . In addition, if the surface of the directional wood thin plate laminated plates 3 and 3 is sanded prior to the application of this adhesive, the fluff-like protruding wood fibers are removed, so that the adhesive can be applied even to minute recesses. It is possible to invade and form the adhesive films 7, 7 having excellent adhesion, water resistance and moisture resistance. In addition, the amount of adhesive used can be reduced.
【００２８】ついで、これら接着皮膜７，７のうち一方
の接着皮膜７上に該接着皮膜７が乾燥する前に表面化粧
材８を載せ、約１１０℃で、１０ｋｇ／ｃｍ2 の圧力を
かけ、約３分間熱圧処理を施し、貼り付けるとともに他
方の接着皮膜７を乾燥させると、目的とする表面化粧木
質板１が得られる。ここでの接着皮膜７の乾燥方法とし
ては、接着皮膜７，７が形成された積層木質板６（以
下、皮膜形成積層木質材６と略記する。）の下方に約２
００℃の片面プレヒーター１５を設置しておき、乾燥さ
せる接着皮膜７側を上記片面プレヒーター１５に向けて
皮膜形成積層木質材６を通過させる。ここでの通過速度
は、上記第１ローラ１１の回転速度によって調整可能で
ある。Then, a surface decorative material 8 is placed on one of the adhesive coatings 7, 7 before the adhesive coating 7 is dried, and a pressure of 10 kg / cm 2 is applied at about 110 ° C., The target surface-decorated wood board 1 is obtained by heat-pressing for about 3 minutes, adhering and drying the other adhesive film 7. As a method of drying the adhesive coating 7 here, about 2 below the laminated wood board 6 on which the adhesive coatings 7, 7 are formed (hereinafter abbreviated as the film-forming laminated wood material 6).
The single-sided preheater 15 at 00 ° C. is installed, and the film-forming laminated wood material 6 is passed with the adhesive coating 7 side to be dried facing the single-sided preheater 15. The passing speed here can be adjusted by the rotation speed of the first roller 11.
【００２９】このようにして得られた表面化粧木質板１
にあっては、積層木質板６の両面に接着剤からなる接着
皮膜７，７が形成され、これら接着皮膜７，７のうち一
方の接着皮膜７上に表面化粧材８が貼り付けられたこと
により、接着皮膜７をなす材料である接着剤７ａが方向
性木材薄片集成板３の凸凹部の凹部を埋めて平滑面が形
成されるので、貼り付けられた表面化粧材８の表面にも
凹凸が表われることがなく、従って表面平滑性に優れて
美観的にも好ましいものとなる。また方向性木材薄片集
成板３の表面に上述のような平滑面が形成されるので、
表面化粧材８が厚さが特に薄いものであっても、表面化
粧材８の貼着が容易となる。また接着部に空隙が生じな
いので、接着強度が改善される。また、積層木質板６の
表面のみならず、裏面からの湿分の吸い込みも防止で
き、耐水性、耐湿性に優れたものとなる。Surface-decorated wood board 1 thus obtained
In that case, the adhesive coatings 7, 7 made of an adhesive were formed on both surfaces of the laminated wooden board 6, and the surface decorative material 8 was attached on one of the adhesive coatings 7, 7. As a result, the adhesive 7a, which is the material forming the adhesive film 7, fills the concave portions of the convex and concave portions of the directional wood thin plate laminate 3 to form a smooth surface, so that the surface of the attached surface decorative material 8 is also uneven. Is not exhibited, and therefore, the surface smoothness is excellent, which is aesthetically pleasing. Further, since the smooth surface as described above is formed on the surface of the directional wood thin plate assembly plate 3,
Even if the surface decorative material 8 is particularly thin, the surface decorative material 8 can be easily attached. In addition, since no void is formed in the adhesive portion, the adhesive strength is improved. Further, not only the front surface of the laminated wooden board 6 but also the back surface of the laminated wood board 6 can be prevented from being sucked in, and the water resistance and the moisture resistance are excellent.
【００３０】また、積層木質板６の構造は先の例の他に
も、木材薄片集成板２の片面にのみ方向性木材薄片集成
板３を積層した２層積層物であってもよい。また、芯層
となる木材薄片集成板の両面に２層ずつの方向性木材薄
片集成板を積層した５層積層物であってもよい。この場
合、隣接する方向性木材薄片集成板３の木材薄片の配列
方向は互いに直交するように配列させるのが好ましい。
このように積層木質板６は、芯層となる木材薄片集成板
２の片面あるいは両面に、用途に応じた最適な強度とな
るよう、任意の数の方向性木材薄片集成板３を積層する
ことができる。Further, the structure of the laminated wooden board 6 may be a two-layer laminated body in which the directional wooden thin piece laminated board 3 is laminated only on one surface of the wooden thin piece laminated board 2 in addition to the above example. Further, it may be a five-layer laminate in which two layers of directional wood flakes are laminated on both sides of the wood flakes laminate serving as the core layer. In this case, it is preferable to arrange the wood thin pieces of the adjacent directional wood thin plate assembly plates 3 so that the wood thin pieces are arranged in mutually orthogonal directions.
In this way, the laminated wood board 6 is formed by laminating an arbitrary number of directional wood thin piece laminated boards 3 on one side or both sides of the wood thin piece laminated board 2 as the core layer so as to have the optimum strength according to the application. You can
【００３１】さらに、芯層も方向性木材薄片集成板であ
ってよい。この際も、芯層となる木材薄片は発泡性バイ
ンダーを用いて成形一体化し、低密度の方向性木材薄片
集成板とすることが好ましい。また、表層となる方向性
木材薄片集成板３の原材料として、厚さが０．３ｍｍ以
下の木材薄片を用いると、方向性木材薄片集成板３の表
面平滑性が増し、接着皮膜７の形成、表面化粧材８の貼
着が容易になり、さらに表面平滑性に優れた表面化粧木
質板１を得ることができる。また、接着剤の使用量も低
減される。Further, the core layer may also be a grain-laminated wood laminate. Also in this case, it is preferable that the wood flakes to be the core layer are molded and integrated using a foamable binder to obtain a low-density laminated directional wood flakes. Further, when a wood flakes having a thickness of 0.3 mm or less is used as a raw material for the directional wood flakes laminated plate 3 which is a surface layer, the surface smoothness of the directional wood flakes laminated plate 3 is increased, and the adhesive coating 7 is formed. The surface decorative material 8 can be easily attached, and the surface decorative wood board 1 having excellent surface smoothness can be obtained. Also, the amount of adhesive used is reduced.
【００３２】図３は、請求項２記載の表面化粧木質板の
一例を示すものであり、図３に示した表面化粧木質板２
０が、図１に示した表面化粧木質板１と異なるところ
は、裏側の接着皮膜７内に、該接着皮膜７が形成される
積層木質板６の面に沿って紙層２１を埋設した点であ
る。なお、図１に示した表面化粧木質板１と同様の構成
要素には同一の符号を付してある。上記紙層２１は、シ
ート状の紙からなるものであっても、このようなシート
状の紙を二枚以上重ねてなるものであってもよい。FIG. 3 shows an example of the surface-decorated wood board according to claim 2, and the surface-decorated wood board 2 shown in FIG.
0 is different from the surface decorative wood board 1 shown in FIG. 1 in that a paper layer 21 is embedded in the adhesive film 7 on the back side along the surface of the laminated wood board 6 on which the adhesive film 7 is formed. Is. The same components as those of the surface-decorated wood board 1 shown in FIG. 1 are designated by the same reference numerals. The paper layer 21 may be made of sheet-like paper, or may be made by stacking two or more such sheet-like papers.
【００３３】紙層２１の重さは、１０〜５０ｇ／ｍ2程
度、好ましくは１５〜３５ｇ／ｍ2程度とされる。紙層
２１の重さが１０ｇ／ｍ2未満であると、表面化粧木質
材２０の表側と裏側との強度の差があまり小さくなら
ず、表面化粧木質板の構造上のバランスがくずれること
に起因してそりが生じる恐れがある。一方、紙層２１の
重さが５０ｇ／ｍ2を超えると、裏側の接着皮膜７を形
成するための接着剤の含浸が困難になる恐れがある。The paper layer 21 has a weight of about 10 to 50 g / m 2 , preferably about 15 to 35 g / m 2 . If the weight of the paper layer 21 is less than 10 g / m 2 , the difference in strength between the front side and the back side of the surface decorative wood material 20 is not so small, and the structural balance of the surface decorative wood board is lost. There is a risk of warping. On the other hand, when the weight of the paper layer 21 exceeds 50 g / m 2 , it may be difficult to impregnate the adhesive for forming the adhesive film 7 on the back side.
【００３４】また、紙層２１の厚さは、裏側の接着皮膜
７の厚みに対して２０〜７０％程度、好ましくは３０〜
６０％程度とされる。紙層２１の厚みが２０％未満であ
ると、薄すぎて目的とする効果が十分に得られず、一
方、紙層２１の厚さが７０％を超えると、もはや効果の
増大は期待できず、経済的にも不利となる。The thickness of the paper layer 21 is about 20 to 70%, preferably 30 to 70% of the thickness of the adhesive film 7 on the back side.
It is about 60%. When the thickness of the paper layer 21 is less than 20%, the intended effect is not sufficiently obtained, and when the thickness of the paper layer 21 exceeds 70%, the effect cannot be expected any longer. , Is also disadvantageous economically.
【００３５】次に、図３に示した表面化粧木質板２０の
製法の一例を説明する。この表面化粧木質板２０の第一
の製法は、積層木質板６の一方の面に上記ＮＲコータ１
０を用いて表側の接着皮膜７を形成するための接着剤を
塗布した後、積層木質板６の他方の面に裏側の接着皮膜
７を形成するための接着剤が含浸、塗布された紙層２１
を載せると同時に表側の接着皮膜７となる接着剤上に該
接着剤が乾燥する前に表面化粧材８を載せ、表側および
裏側の両側から約１２０℃で、４．０ｋｇ／ｃｍ2 の圧
力をかけ、約１分間熱圧処理を施すと、目的とする表面
化粧木質板２０が得られる。この第一の製法において
は、裏側の接着皮膜７を形成する側のＮローラ用接着剤
槽１３とＲローラ用接着剤槽１４、ならびに片面プレヒ
ータ１５は用いない。Next, an example of a method of manufacturing the surface-decorated wood board 20 shown in FIG. 3 will be described. The first manufacturing method of the surface-decorated wood board 20 is that the NR coater 1 is formed on one surface of the laminated wood board 6.
0 is used to apply the adhesive for forming the front side adhesive film 7, and then the other surface of the laminated wood board 6 is impregnated with the adhesive for forming the back side adhesive film 7 and applied to the paper layer. 21
The surface decorative material 8 is placed on the adhesive which becomes the adhesive film 7 on the front side at the same time when the adhesive is dried, and the pressure of 4.0 kg / cm 2 is applied at about 120 ° C. from both sides of the front side and the back side. By subjecting it to heat and pressure treatment for about 1 minute, the target surface-decorated wood board 20 is obtained. In the first manufacturing method, the N-roller adhesive tank 13 and the R-roller adhesive tank 14 on the side where the adhesive film 7 is formed on the back side, and the single-side preheater 15 are not used.
【００３６】この表面化粧木質板２０の第二の製法は、
積層木質板６の両面に上記ＮＲコータ１０を用いて接着
皮膜７，７を形成するための接着剤を塗布した後、裏側
の接着皮膜７となる接着剤上に該接着剤が乾燥する前に
紙層２１を載せ、ついで、表側の接着皮膜７となる接着
剤上に該接着剤が乾燥する前に表面化粧材８を載せ、表
側および裏側の両側から約１２０℃で、４．０ｋｇ／ｃ
ｍ2 の圧力をかけ、約１分間熱圧処理を施すと、目的と
する表面化粧木質板２０が得られる。ここでは裏側の接
着皮膜７となる接着剤上に該接着剤が乾燥する前に紙層
２１を載せると同時に表側の接着皮膜７となる接着剤上
に該接着剤が乾燥する前に表面化粧材８を載せ、熱圧処
理を施すのが、製造工程上およびそり防止上好ましい。
この第二の製法においては、片面プレヒータ１５は用い
ない。The second method of manufacturing the surface decorative wood board 20 is as follows.
After applying the adhesive for forming the adhesive coatings 7, 7 on both sides of the laminated wooden board 6 using the NR coater 10, before the adhesive is dried on the adhesive to be the adhesive coating 7 on the back side. The paper layer 21 is placed, and then the surface decorative material 8 is placed on the adhesive which becomes the adhesive film 7 on the front side before the adhesive dries, and at about 120 ° C. from both sides of the front side and the back side, 4.0 kg / c.
A desired surface-decorated wood board 20 is obtained by applying a pressure of m 2 and subjecting it to a heat-pressing treatment for about 1 minute. Here, the paper layer 21 is placed on the adhesive forming the adhesive film 7 on the back side before the adhesive dries, and at the same time, the surface decorative material is formed on the adhesive forming the adhesive film 7 on the front side before the adhesive dries. It is preferable that 8 is mounted and subjected to a heat and pressure treatment in terms of the manufacturing process and prevention of warpage.
In this second manufacturing method, the single-sided preheater 15 is not used.
【００３７】このようにして得られた表面化粧木質板２
０にあっては、特に、裏側の接着皮膜７内に、該接着皮
膜７が形成される積層木質板６の面に沿って紙層２１が
埋設されたことにより、裏側の接着皮膜７をなす接着剤
が上記紙層２１によって補強され、強度が向上するの
で、運搬などの際に表面化粧木質板２０の裏面をぶつけ
ても裏側の接着皮膜７が剥離しにくく、取り扱いが容易
である。また、図１に示した表面化粧木質板１よりも、
裏側の接着皮膜７の形成が容易であり、また、厚みを厚
くし易いので、図１の表面化粧木質板１よりも接着皮膜
を設けることによる効果が大である。さらに、図１の表
面化粧木質板１に比べて、表面化粧材８が設けられてい
る表側と表面化粧材８が設けられていない裏側との強度
の差が小さくなるので、表面化粧木質板の構造上のバラ
ンスがくずれることが少なくなり、構造上のバランスが
くずれることに起因するそりの発生を防止できる。ま
た、このように紙層２１が設けられた裏側の接着皮膜７
は、接着剤単独のものからなる場合と比べて外観が向上
するので、この表面化粧木質板２０の裏側が見えても見
苦しいことがない。また、この表面化粧木質板２０にあ
っては、例えば、接着剤が含浸、塗布された紙層２１を
積層木質板６と重ねて熱圧したりすることにより容易に
製造できるので、接着剤の単独コーティングにより形成
することに比べて、作業性がよい。Surface-decorated wood board 2 thus obtained
In particular, the back side adhesive coating 7 is formed by embedding the paper layer 21 in the back side adhesive coating 7 along the surface of the laminated wood board 6 on which the adhesive coating 7 is formed. Since the adhesive is reinforced by the paper layer 21 and the strength is improved, the adhesive film 7 on the back side is not easily peeled off even when the back surface of the surface decorative wood board 20 is hit during transportation and the like, and the handling is easy. Moreover, rather than the surface decorative wood board 1 shown in FIG.
Since the adhesive film 7 on the back side can be easily formed and the thickness thereof can be easily increased, the effect of providing the adhesive film is greater than that of the surface-decorated wood board 1 of FIG. Further, compared to the surface-decorated wood board 1 of FIG. 1, the difference in strength between the front side provided with the surface-decorated material 8 and the back side not provided with the surface-decorated material 8 becomes smaller, so that The structural balance is less likely to be lost, and it is possible to prevent warpage due to the structural balance being lost. Further, the adhesive film 7 on the back side provided with the paper layer 21 in this way
Since the appearance is improved as compared with the case where the adhesive is used alone, it is not unpleasant to see the back side of the surface-decorated wood board 20. Further, the surface-decorated wood board 20 can be easily manufactured by, for example, stacking the paper layer 21 impregnated with and applied with the adhesive with the laminated wood board 6 and heat-pressing the same. Workability is better than forming by coating.
【００３８】[0038]
【実施例】以下、本発明を更に理解しやすくするため、
実施例について説明する。かかる実施例は、本発明の一
態様を示すものであり、この発明を限定するものではな
い。本発明の範囲で任意に変更可能である。
（実施例１）まず、木材薄片集成板２の材料として、厚
さ０．４〜０．８ｍｍ、長さ２０〜１００ｍｍ、幅２〜
６０ｍｍの木材薄片を用意し、低速で回転する回転ドラ
ム内に前記の木材薄片１００重量部を入れて、ドラム内
で自然落下する際に、発泡性ウレタン樹脂（住友バイエ
ルウレタン社製の粗ＭＤＩ）１０重量部をスプレーで散
布することにより、発泡性バインダーが塗布された木材
薄片を得た。EXAMPLES In order to make the present invention easier to understand,
Examples will be described. The examples show one aspect of the present invention, and do not limit the present invention. It can be arbitrarily changed within the scope of the present invention. (Embodiment 1) First, as a material of the wood thin laminated plate 2, the thickness is 0.4 to 0.8 mm, the length is 20 to 100 mm, and the width is 2 to 2.
A thin piece of wood of 60 mm was prepared, 100 parts by weight of the thin piece of wood was put in a rotating drum rotating at a low speed, and when it fell naturally in the drum, a foaming urethane resin (crude MDI manufactured by Sumitomo Bayer Urethane Co., Ltd.) By spraying 10 parts by weight of a spray, a thin piece of wood coated with the expandable binder was obtained.
【００３９】ついで、方向性木材薄片集成板３の材料と
して、厚さ０．１〜０．５ｍｍ、長さ２０〜１００ｍ
ｍ、幅２〜６０ｍｍの木材薄片を用意し、低速で回転す
る回転ドラム内に上記の木材薄片１００重量部を入れ
て、ドラム内で自然落下する際に、水性フェノールバイ
ンダーからなる非発泡性バインダー１０重量部をスプレ
ーで散布することにより、非発泡性バインダーが塗布さ
れた木材薄片を得た。Next, as a material for the directional wood thin plate laminate 3, the thickness is 0.1 to 0.5 mm and the length is 20 to 100 m.
m, width 2 to 60 mm, a thin piece of wood is prepared, 100 parts by weight of the above thin piece of wood is put into a rotating drum that rotates at a low speed, and when it naturally falls in the drum, a non-foaming binder made of an aqueous phenol binder. By spraying 10 parts by weight with a spray, a wood flakes coated with a non-foaming binder was obtained.
【００４０】ついで、非発泡性バインダーを塗布した木
材薄片のうちの半分を、木材薄片の配列方向がほぼ一定
になるように熱圧板上に散布し、その上に、発泡性バイ
ンダーを塗布した木材薄片を散布した。さらにその上
に、残りの非発泡性バインダーを塗布した木材薄片を、
木材薄片の配列方向がほぼ一定になるように散布し、厚
さ２５０ｍｍの積層物とした。その積層物を、厚さ１２
ｍｍとなるように、温度１６０℃、圧力１０〜１５ｋｇ
／ｃｍ2 で約５分間熱圧同時成形し積層木質板６を得
た。Then, half of the wood flakes coated with the non-foaming binder are sprinkled on a hot pressing plate so that the arrangement direction of the wood flakes is almost constant, and the wood coated with the foaming binder is applied thereon. Spread the flakes. On top of that, the wood flakes coated with the remaining non-foaming binder,
The thin wood pieces were scattered so that the direction of arrangement was almost constant, and a laminate having a thickness of 250 mm was obtained. The laminate is
mm, pressure 160 ℃, pressure 10-15kg
/ Cm 2 Simultaneous hot pressing was performed for about 5 minutes to obtain a laminated wood board 6.
【００４１】ついで、図２に示したＮＲコータを用いて
積層木質板６の両面にゴム変性メラミン・ユリア樹脂接
着剤を塗布量が６０〜７０ｇ／ｍ2となるように塗布
し、接着皮膜７，７を形成した。ついで、これら接着皮
膜７，７のうち一方の接着皮膜７上に該接着皮膜７が乾
燥する前に厚さ０．３ｍｍのオーク突板からなる表面化
粧材８を載せ、約１１０℃で、１０ｋｇ／ｃｍ2 の圧力
をかけ、約１分間熱圧処理を施し、貼り付けるとともに
他方の接着皮膜７を図２に示した片面プレヒーター１５
を用いて乾燥させ、表面化粧木質板１を得た。ここで用
いた片面プレヒーター１５の温度は２００℃であり、ま
た、片面プレヒーター１５上を通過させる皮膜形成積層
木質材６の速度は約１０〜１５ｍ／分であった。Then, using the NR coater shown in FIG. 2, a rubber-modified melamine-urea resin adhesive was applied to both surfaces of the laminated wood board 6 so that the applied amount was 60 to 70 g / m 2, and the adhesive film 7 was formed. , 7 were formed. Then, a surface decorative material 8 made of an oak veneer having a thickness of 0.3 mm is placed on one of the adhesive coatings 7 and 7 before the adhesive coating 7 is dried, and at about 110 ° C., 10 kg / A pressure of cm 2 is applied, a heat and pressure treatment is applied for about 1 minute, and the one side preheater 15 shown in FIG.
And dried to obtain a surface-decorated wood board 1. The temperature of the single-sided preheater 15 used here was 200 ° C., and the speed of the film-forming laminated wood material 6 that passed over the single-sided preheater 15 was about 10 to 15 m / min.
【００４２】このようにして得られた表面化粧木質板１
は表面が極めて平滑であり、表面化粧材が薄いにも係わ
らず方向性木材薄片集成板の木材薄片模様が全く認めら
られなかった。また、この表面化粧木質板１を高温高湿
の環境においても表面化粧材に膨れや剥離が認められ
ず、耐水・耐湿性能が優れているのが分った。Surface-decorated wood board 1 thus obtained
The surface was extremely smooth, and although the surface decorative material was thin, the wood flakes pattern of the directional wood flakes laminated plate was not recognized at all. Further, it was found that the surface-decorated wood board 1 was excellent in water resistance and moisture resistance even when the surface decoration material was not swollen or peeled off even in an environment of high temperature and high humidity.
【００４３】（実施例２）上記実施例１と同様にして作
製した積層木質板６の一方の面に図２に示したＮＲコー
タを用いてゴム変性メラミン・ユリア樹脂接着剤を塗布
量が６０〜７０ｇ／ｍ2となるように塗布し、表側の接
着皮膜７を形成した。ついで、積層木質板６の他方の面
に裏側の接着皮膜７を形成するためのゴム変性メラミン
・ユリア樹脂接着剤が含浸、塗布された紙層２１を載せ
ると同時に表側の接着皮膜７上に該接着皮膜７をなす接
着剤が乾燥する前に上記実施例１で用いたものと同様の
表面化粧材８を載せ、表側および裏側の両側から約１２
０℃で、４．０ｋｇ／ｃｍ2 の圧力をかけ、約１分間熱
圧処理を施し、表面化粧木質板２０を得た。ここでの紙
層２１の重さは、２５ｇ／ｍ2であり、厚みは接着皮膜
７の厚みに対して４１％であった。Example 2 A rubber-modified melamine-urea resin adhesive was applied to one surface of a laminated wooden board 6 produced in the same manner as in Example 1 by using the NR coater shown in FIG. It was applied so as to be about 70 g / m 2 to form the adhesive film 7 on the front side. Then, a rubber-modified melamine-urea resin adhesive for forming an adhesive coating 7 on the back side is impregnated on the other surface of the laminated wood board 6 and a paper layer 21 coated with the adhesive is placed on the adhesive coating 7 on the front side. Before the adhesive forming the adhesive film 7 is dried, a surface decorative material 8 similar to that used in the above-mentioned Example 1 is placed, and about 12 from both sides of the front side and the back side.
A pressure of 4.0 kg / cm 2 was applied at 0 ° C., and heat-pressed for about 1 minute to obtain a surface-decorated wood board 20. The weight of the paper layer 21 here was 25 g / m 2 , and the thickness was 41% of the thickness of the adhesive coating 7.
【００４４】このようにして得られた表面化粧木質板２
０は表面が極めて平滑であり、表面化粧材が薄いにも係
わらず方向性木材薄片集成板の木材薄片模様が全く認め
らられなかった。また、この表面化粧木質板２０を高温
高湿の環境においても表面化粧材にそり、膨れや剥離が
認められず、耐水・耐湿性能が優れているのが分った。Surface-decorated wood board 2 thus obtained
In No. 0, the surface was extremely smooth, and although the surface decorative material was thin, no wood flakes pattern was observed on the directional wood flakes laminated board. Further, it was found that the surface-decorated wood board 20 was excellent in water resistance and moisture resistance performance along the surface decoration material even in an environment of high temperature and high humidity without swelling or peeling.
【００４５】[0045]
【発明の効果】以上説明したように本発明の請求項１記
載の表面化粧木質板は、積層木質板のり両面に接着剤か
らなる接着皮膜が形成され、これら接着皮膜のうち方向
性木材薄片集成板上に形成された接着皮膜の一方に表面
化粧材が貼り付けられたものであるので、接着皮膜をな
す材料である接着剤が上記方向性木材薄片集成板の凸凹
部の凹部を埋めて平滑面が形成され、貼り付けられた表
面化粧材の表面にも凹凸が表われることがなく、従って
表面平滑性に優れて美観的にも好ましいものとなる。ま
た方向性木材薄片集成板の表面に上述のような平滑面が
形成されるので、表面化粧材が厚さが特に薄いものであ
っても、表面化粧材の貼着が容易となる。また接着部に
空隙が生じないので、接着強度が改善される。また、積
層木質板の両面からの湿分の吸収を防止でき、耐水性、
耐湿性に優れたものとなり、さらにまた寸法安定性に優
れるという利点がある。As described above, in the surface-decorated wood board according to the first aspect of the present invention, the adhesive film made of the adhesive is formed on both surfaces of the laminated wood board. Since the surface decorative material is attached to one side of the adhesive film formed on the plate, the adhesive that is the material forming the adhesive film fills the concave and convex parts of the directional wood thin plate laminated plate and smoothes it. A surface is formed, and no unevenness appears on the surface of the surface decorative material that is pasted. Therefore, the surface smoothness is excellent, which is also aesthetically pleasing. Further, since the smooth surface as described above is formed on the surface of the directional wood thin plate laminate, even if the surface decorative material is particularly thin, the surface decorative material can be easily attached. In addition, since no void is formed in the adhesive portion, the adhesive strength is improved. In addition, it can prevent the absorption of moisture from both sides of the laminated wood board, water resistance,
It has excellent moisture resistance and also has the advantage of excellent dimensional stability.
【００４６】また、請求項２記載の表面化粧木質板にあ
っては、特に、裏側の接着皮膜内に、該接着皮膜が形成
される積層木質板の面に沿って紙層が埋設されたもので
あるので、裏側の接着皮膜をなす接着剤が上記紙層によ
って補強され、強度が向上するので、運搬などの際に表
面化粧木質板の裏面をぶつけても裏側の接着皮膜が剥離
しにくく、取り扱いが容易である。また、請求項１記載
の表面化粧木質板よりも、裏側の接着皮膜の形成が容易
であり、また厚みを厚くし易いので、請求項１記載の表
面化粧木質板より接着皮膜を設けることによる効果が大
である。さらに、請求項１記載の表面化粧木質板に比べ
て、表面化粧材が設けられている表側と表面化粧材が設
けられていない裏側との強度の差が小さくなるので、表
面化粧木質板の構造上のバランスがくずれることが少な
くなり、構造上のバランスがくずれることに起因するそ
りの発生を防止できる。また、このように紙層が設けら
れた裏側の接着皮膜は、接着剤単独のものからなる場合
と比べて外観が向上するので、この表面化粧木質板の裏
側が見えても見苦しいことがない。また、この表面化粧
木質板にあっては、例えば、接着剤が含浸、塗布された
紙層を積層木質板に重ねて熱圧したりすることにより容
易に製造できるので、接着剤の単独コーティングにより
形成することに比べて、作業性が向上する。Further, in the surface-decorated wood board according to claim 2, particularly, a paper layer is embedded in the adhesive film on the back side along the surface of the laminated wood board on which the adhesive film is formed. Therefore, the adhesive forming the adhesive film on the back side is reinforced by the paper layer, and the strength is improved, so that the adhesive film on the back side is difficult to peel off even when hitting the back surface of the surface decorative wood board during transportation, Easy to handle. Further, since the adhesive film on the back side can be formed more easily and the thickness can be made thicker than that of the surface-decorated wood board according to claim 1, the effect obtained by providing the adhesive film than the surface-decorated wood board according to claim 1 Is large. Further, as compared with the surface-decorated wood board according to claim 1, the difference in strength between the front side provided with the surface-decorated material and the back side not provided with the surface-decorated material becomes smaller, and thus the structure of the surface-decorated wood sheet. The upper balance is less likely to be broken, and the occurrence of warpage due to the structural balance being broken can be prevented. In addition, since the appearance of the adhesive film on the back side provided with the paper layer is improved as compared with the case where the adhesive is used alone, it is not unpleasant to see the back side of the surface-decorated wood board. In addition, this surface-decorated wood board can be easily manufactured, for example, by stacking a paper layer impregnated with an adhesive on the laminated wood board and applying heat to it. Workability is improved as compared to the case of doing.
【図１】 本発明の請求項１記載の表面化粧木質板の一
例を示す断面図である。FIG. 1 is a sectional view showing an example of a surface-decorated wood board according to claim 1 of the present invention.
【図２】 図１に示した表面化粧木質板の製造方法を説
明するための図である。FIG. 2 is a view for explaining a method of manufacturing the surface-decorated wood board shown in FIG.
【図３】 本発明の請求項２記載の表面化粧木質板の一
例を示す断面図である。FIG. 3 is a cross-sectional view showing an example of a surface decorative wood board according to claim 2 of the present invention.
１・・・表面化粧木質板、２・・・木材薄片集成板、３・・・方
向性木材薄片集成板、６…積層木質板、７・・・接着皮
膜、８・・・表面化粧材、２０・・・表面化粧木質板、２１・・
・紙層。DESCRIPTION OF SYMBOLS 1 ... Surface decorative wood board, 2 ... Wood thin piece laminated board, 3 ... Directional wood thin piece laminated board, 6 ... Laminated wood board, 7 ... Adhesive film, 8 ... Surface decorative material, 20 ... Surface decorative wood board, 21 ...
-Paper layer.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ３２Ｂ 21/08 １０２ Ｂ３２Ｂ 21/08 １０２ (56)参考文献 特開 平３−27901（ＪＰ，Ａ) 実開 平３−35118（ＪＰ，Ｕ) 実開 昭63−67492（ＪＰ，Ｕ) 実開 昭63−67493（ＪＰ，Ｕ) 実開 昭63−121508（ＪＰ，Ｕ) 実開 平５−76702（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B27M 3/00 B27D 1/04 B27M 1/00 B27N 3/02 B27N 7/00 B32B 21/08 102 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI B32B 21/08 102 B32B 21/08 102 (56) References JP-A-3-27901 (JP, A) Sankaihei 3-35118 (JP, U) Actual opening Sho 63-67492 (JP, U) Actual opening Sho 63-67493 (JP, U) Actual opening Sho 63-121508 (JP, U) Actual opening Flat 5-76702 (JP, U) ( 58) Fields surveyed (Int.Cl. 7 , DB name) B27M 3/00 B27D 1/04 B27M 1/00 B27N 3/02 B27N 7/00 B32B 21/08 102
Claims (3)
性木材薄片集成板を積層した積層木質板の両面に、充填
剤を接着剤の固形分総量の１０〜５０重量％含有するゴ
ム変性メラミン・ユリア樹脂からなる接着皮膜が形成さ
れ、これら接着皮膜のうち方向性木材薄片集成板上に形
成された接着皮膜の一方に表面化粧材を貼り付けたこと
を特徴とする表面化粧木質板。1. Filling both sides of a laminated wood board, in which a directional wood laminate board is laminated on at least one surface of a wood laminate board.
Containing 10 to 50% by weight of the total solid content of the adhesive agent
Adhesive film made of melamine-modified urea resin is formed, and a surface decorative material is applied to one of the adhesive films formed on the directional wood thin plate laminate. Board.
皮膜のうち表面化粧材が貼り付けられない方の接着皮膜
内に、該接着皮膜が形成される積層木質板の面に沿って
紙層を埋設したことを特徴とする請求項１記載の表面化
粧木質板。2. The paper along the surface of the laminated wooden board on which the adhesive coating is formed, in the adhesive coating of the adhesive coating formed on both sides of the laminated wooden board on which the surface decorative material is not attached. The surface-decorated wood board according to claim 1, wherein layers are embedded.
であることを特徴とする請求項２記載の表面化粧木質
板。 3. The paper layer has a weight of 10 to 50 g / m 2.
The surface decorative wood material according to claim 2, characterized in that
Board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16843894A JP3465358B2 (en) | 1993-11-22 | 1994-07-20 | Surface decorative wood board |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29220293 | 1993-11-22 | ||
| JP5-292202 | 1993-11-22 | ||
| JP16843894A JP3465358B2 (en) | 1993-11-22 | 1994-07-20 | Surface decorative wood board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07186113A JPH07186113A (en) | 1995-07-25 |
| JP3465358B2 true JP3465358B2 (en) | 2003-11-10 |
Family
ID=26492144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16843894A Expired - Lifetime JP3465358B2 (en) | 1993-11-22 | 1994-07-20 | Surface decorative wood board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3465358B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7868094B2 (en) * | 2005-11-21 | 2011-01-11 | Henkel Ag & Co. Kgaa | Adhesive composition |
| KR100772789B1 (en) * | 2007-06-26 | 2007-11-01 | 이성운 | The cotting method and cotting panel |
| JP5294496B2 (en) * | 2010-03-26 | 2013-09-18 | パナソニック株式会社 | Manufacturing method of building material and building material |
| CN110644701A (en) * | 2019-07-05 | 2020-01-03 | 苏州梵创新材料科技有限公司 | Double-clamp profile of film-coated integrated board and mounting method thereof |
-
1994
- 1994-07-20 JP JP16843894A patent/JP3465358B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07186113A (en) | 1995-07-25 |
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