JPH06280376A - Building plate - Google Patents
Building plateInfo
- Publication number
- JPH06280376A JPH06280376A JP9209593A JP9209593A JPH06280376A JP H06280376 A JPH06280376 A JP H06280376A JP 9209593 A JP9209593 A JP 9209593A JP 9209593 A JP9209593 A JP 9209593A JP H06280376 A JPH06280376 A JP H06280376A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- wood
- wood veneer
- substrate
- sheet
- 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.)
- Granted
Links
Landscapes
- Floor Finish (AREA)
- Laminated Bodies (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は家屋の床材、天井材、壁
材等に用いられる建築用板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building board used as a floor material, a ceiling material, a wall material, etc. of a house.
【０００２】[0002]
【従来技術】上記用途に用いられる建築用板として、基
板表面に突板等の任意化粧シートを貼着してなる構成の
ものが公知である。基板としては、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や、単板の繊維方
向を同一方向として積層接着した平行合板（Ｌ．Ｖ．
Ｌ．）が一般に用いられている。これら合板は大きな寸
法の板を多量に安定して供給することができ、また寸法
安定性に優れているので、床材等に用いられる建築用板
における基板として好適なものとされてきた。2. Description of the Related Art As a construction board used for the above-mentioned purposes, there is known a construction board in which an arbitrary decorative sheet such as a veneer is attached to the surface of the board. As the substrate, a plywood obtained by laminating and bonding single plates with their fiber directions orthogonal to each other, or a parallel plywood (LV.
L. ) Is commonly used. Since these plywoods can stably supply a large amount of large-sized boards and are excellent in dimensional stability, they have been suitable as substrates for construction boards used for flooring and the like.
【０００３】[0003]
【発明が解決しようとする課題】これら合板は天然木材
を薄く剥ぎ取った単板を積層接着して製造するものであ
るが、近年、天然資源の枯渇問題が世界的に大きく取り
上げられ、合板の原材料となる原木を伐採することが次
第に困難になると共に、原木の質が低下することによっ
て、合板に使用するに適した良質の単板を多量に安定的
に得ることが困難になってきている。このため、品質の
良い合板を多量に市場に安定供給することがかつてのよ
うに容易ではなくなりつつある。この問題は今後ますま
す深刻化することが予測され、建築用板の基材として合
板に代えて使用し得る代替品の提供が熱望されている。These plywoods are manufactured by laminating and adhering veneers made by thinly stripping natural wood. In recent years, the problem of depletion of natural resources has been widely taken up worldwide, and As it becomes increasingly difficult to cut down the raw wood that is the raw material, and the quality of the raw wood deteriorates, it is becoming difficult to stably obtain a large amount of good quality veneer suitable for plywood. . For this reason, it has become difficult to stably supply a large amount of high-quality plywood to the market as it used to. This problem is expected to become more and more serious in the future, and there is an eager desire to provide an alternative product that can be used in place of plywood as a base material for building boards.
【０００４】また、特にマンション等の建設現場でコン
クリート下地上に直貼りされる床材として用いられる場
合、コンクリートの一次硬化が完了して十分な強度を有
するものとなった後も、コンクリート自体は高含水状態
であるため、この水分が床材基板の裏面側に吸収されて
裏面側を膨張させる傾向があるのに対し、表面側には一
般に表面塗装が施された化粧シートが貼着されているた
め、表面側からの水分吸収はほとんどなされない。従っ
て、床材の表面側と裏面側との膨張率が異なり、床材の
幅方向において裏面側を凸とする反りが発生するという
問題がある。この問題は、コンクリート下地への直貼り
施工の場合に限らず、床材を施工した環境において湿度
が上昇することによって大なり小なり発生するものであ
る。Further, when it is used as a floor material which is directly pasted on a concrete foundation at a construction site such as a condominium, the concrete itself does not remain even after the primary hardening of the concrete is completed and the concrete has sufficient strength. Due to the high water content, this moisture tends to be absorbed by the back side of the flooring substrate and cause the back side to expand, while a decorative sheet with a surface coating is generally attached to the front side. As a result, water is hardly absorbed from the surface side. Therefore, there is a problem in that the expansion rates of the front surface side and the back surface side of the floor material are different, and warpage occurs in which the back surface side is convex in the width direction of the floor material. This problem is not limited to the case of directly pasting on a concrete substrate, but it occurs to a greater or lesser extent due to an increase in humidity in the environment in which the floor material is constructed.
【０００５】[0005]
【課題を解決するための手段】そこで本発明は、寸法安
定性が良好であり、特に合板の代替品として使用し得る
新規な積層板を基板とした場合にも優れた寸法安定性を
有する建築用板を提供することを目的として鋭意工夫の
末に完成されたものである。Therefore, the present invention has a good dimensional stability, and in particular, a building having excellent dimensional stability even when a novel laminated plate which can be used as a substitute for plywood is used as a substrate. It was completed after intensive efforts to provide a board.
【０００６】即ち本発明による建築用板は、基板の裏面
に、ポリエチレンシートを芯としてその表裏にクラフト
紙を積層してなる防湿シートが貼着されてなることを特
徴とする。That is, the building board according to the present invention is characterized in that a moisture-proof sheet having a polyethylene sheet as a core and kraft paper laminated on the front and back sides thereof is attached to the back surface of the substrate.
【０００７】基板には、従来より一般的に用いられてい
る、単板をその繊維方向を互いに直交させて積層接着し
た合板や、単板の繊維方向を同一方向として積層接着し
た平行合板（Ｌ．Ｖ．Ｌ．）等を用いることができる
が、好適には、表面側より表層木質繊維層、中層木質単
板層、中層木質繊維層および裏層木質単板層の順で積層
一体化されてなる基板が用いられる。[0007] As the substrate, a plywood, which has been generally used conventionally, is formed by laminating and bonding single plates with their fiber directions orthogonal to each other, or a parallel plywood (L by laminating and bonding the single plates in the same direction). .V.L.), Etc., but preferably from the surface side, the surface wood fiber layer, the middle wood veneer layer, the middle wood fiber layer and the back wood veneer layer are laminated and integrated in this order. The resulting substrate is used.
【０００８】この場合の基板における中層木質単板層お
よび裏層木質単板層に用いる木質単板としては、針葉樹
又は広葉樹材の原木をロータリーレース、スライサー等
の切削装置を用いて切削して得られる針葉樹単板又は広
葉樹単板を用いることができる。これら針葉樹単板、広
葉樹単板は板厚が０．２ｍｍ以上、好ましくは０．５〜
５．５ｍｍのものが用いられる。板厚が０．２ｍｍに満
たないと、特に床材として用いられる場合に必要な機械
的強度を建築用板に与えることが困難であり、この見地
より０．５ｍｍ以上の板厚であることが好ましい。板厚
が５．５ｍｍを越えるものとなると、単板の水分の吸放
湿に伴う収縮膨張が基板としての寸法安定化に影響を及
ぼすこととなるので、好ましくない。中層木質単板層と
裏層木質単板層における木質単板は同じ板厚のものであ
っても異なるものであっても良い。異なる板厚とする場
合、建築用板、特に床材としての機械的強度向上を目的
とする場合には裏層木質単板層を厚くすることが好まし
く、また寸法安定性を主眼とする場合には中層木質単板
層を厚くすることが好ましい。The wood veneer used for the middle-layer wood veneer layer and the back-layer wood veneer layer in this case is obtained by cutting a conifer or a hardwood log using a cutting device such as a rotary racer or a slicer. The used softwood veneer or hardwood veneer can be used. These softwood veneers and hardwood veneers have a plate thickness of 0.2 mm or more, preferably 0.5 to
A 5.5 mm one is used. If the plate thickness is less than 0.2 mm, it is difficult to give a mechanical strength required for a building board, especially when it is used as a floor material. From this viewpoint, the plate thickness may be 0.5 mm or more. preferable. If the plate thickness exceeds 5.5 mm, the shrinkage and expansion of the veneer due to absorption and release of moisture will affect the dimensional stability of the substrate, which is not preferable. The wood veneers in the middle-layer wood veneer layer and the back-layer wood veneer layer may have the same thickness or different thicknesses. When using different board thicknesses, it is preferable to thicken the backing wood veneer layer for the purpose of improving the mechanical strength as a building board, especially as a flooring material, and when focusing on dimensional stability. It is preferable to thicken the middle-layer wood veneer layer.
【０００９】これら中層木質単板層と裏層木質単板層の
繊維方向は、好ましくは共に建築用板の長さ方向と平行
となるように配される。木質単板は繊維方向の曲げ強度
および引張り強度が大きい性質を有するため、裏層木質
単板層の繊維方向を基板長さ方向と一致させることによ
り、本発明の建築用板の裏面側において生ずる引張り負
荷に対する耐久性が向上され、長さ方向の曲げ強度にも
優れた特性を有するものとなる。床材等の建築用板は、
一般にその長さ方向端部を下地構造材により支持するよ
うに施工されるので、上記構成によって長さ方向の曲げ
強度が向上させることによって床材等に用いるのに非常
に適した板材を得ることができる。更に、中層木質単板
層の繊維方向も裏層木質単板層の繊維方向と同じく建築
用板の長さ方向と平行とすることにより、長さ方向の曲
げ強度をより一層増大させることができる。The fiber directions of the middle-layer wood veneer layer and the back-layer wood veneer layer are preferably arranged so as to be parallel to the length direction of the building board. Since the wood veneer has a property that the bending strength and the tensile strength in the fiber direction are large, it is generated on the back side of the building board of the present invention by making the fiber direction of the back layer wood veneer layer coincide with the substrate length direction. The durability against tensile load is improved, and the bending strength in the length direction is also excellent. Floor boards and other building boards are
Since it is generally constructed so that its lengthwise end is supported by the underlying structural material, the above structure improves the bending strength in the lengthwise direction to obtain a plate material very suitable for use as a floor material, etc. You can Furthermore, by making the fiber direction of the middle-layer wood veneer layer parallel to the length direction of the building board as well as the fiber direction of the back layer wood veneer layer, it is possible to further increase the bending strength in the length direction. .
【００１０】これら中層木質単板層および裏層木質単板
層に用いる木質単板においては、フェノール樹脂処理、
アセチル化処理、エステル化処理、ホルマル化処理、Ｐ
ＥＧ（ポリエチレングリコール）処理、ＷＰＣ（樹脂含
浸）処理等を施して、基板の寸法安定性および機械的性
質の向上を図ることができる。また、リン酸アンモニウ
ム、リン窒素化合物、ハロゲン化合物、スルファミン
酸、ホウ酸等の公知の難燃化薬剤による防火処理を施し
た木質単板を用いることにより、防火機能をも有する建
築用板が得られる。この防火処理は、例えば、難燃化薬
剤に木質単板を浸漬する方法、木質単板の表面に難燃化
薬剤を塗布する方法、加圧又は減圧下で木質単板に難燃
化薬剤を注入する方法によって行うことができる。In the wood veneers used for the middle-layer wood veneer layer and the back-layer wood veneer layer, phenol resin treatment,
Acetylation treatment, esterification treatment, formalization treatment, P
By performing EG (polyethylene glycol) treatment, WPC (resin impregnation) treatment, or the like, dimensional stability and mechanical properties of the substrate can be improved. Further, by using a wood veneer that has been fire-proofed by a known flame-retardant agent such as ammonium phosphate, a phosphorus-nitrogen compound, a halogen compound, sulfamic acid, and boric acid, a building board that also has a fire-proof function can be obtained. To be This fire prevention treatment is, for example, a method of immersing the wood veneer in the flame retardant chemical, a method of applying the flame retardant chemical to the surface of the wood veneer, or applying the flame retardant chemical to the wood veneer under pressure or reduced pressure. This can be done by the method of injection.
【００１１】一方、基板における表層木質繊維層および
中層木質繊維層は、松、杉、桧等の針葉樹材、又はラワ
ン、カポール、栗、ポプラ等の広葉樹材の原木や廃材を
切削して得られる木材チップを常法により解繊して木質
繊維を得、これを圧締成形して比重０．４以上、好まし
くは０．５以上の木質繊維層として得られるものであ
り、単独ではハードボード、ＭＤＦ（中質繊維板）等と
して知られているものである。木質繊維層には、その製
造過程で生ずるサンダーダスト、ソーダスト、チップダ
スト等の屑材を混入することができる。これら表層木質
繊維層と中層木質繊維層とは同じ厚さであっても異なる
厚さであっても良く、また比重についても同じであって
も異なるものであっても良い。On the other hand, the surface wood fiber layer and the middle wood fiber layer of the substrate are obtained by cutting softwood materials such as pine, cedar, cypress, etc. Wood chips are defibrated by a conventional method to obtain wood fibers, which are pressure-molded to obtain a wood fiber layer having a specific gravity of 0.4 or more, preferably 0.5 or more. It is known as MDF (medium fiberboard). Waste materials such as sander dust, saw dust, and chip dust generated in the manufacturing process can be mixed in the wood fiber layer. The surface wood fiber layer and the middle wood fiber layer may have the same thickness or different thicknesses, and may have the same or different specific gravities.
【００１２】このような木質繊維層は、含水率１％当た
りの寸法変化率が０．０３〜０．０４％と極めて小さ
く、しかもいずれの方向においても略均等であって、優
れた寸法安定性を有する。従って、中層木質繊維層を中
層木質単板層と裏層木質単板層との間に介在させ更に表
層木質繊維層を中層木質単板層の上面に積層させて基板
を構成することにより、木質単板層における収縮膨張を
これら木質繊維層によって抑制することができ、極めて
優れた寸法安定性を有する基板を得ることが可能とな
る。ちなみに、合板の吸放湿による寸法変化率は含水率
１％当たりにして０．０２〜０．０３％であるから、本
発明において用いられる基板が合板に匹敵する優れた寸
法安定性を有するものであることが理解される。Such a wood fiber layer has a very small dimensional change rate of 0.03 to 0.04% per 1% of water content, and is substantially uniform in any direction, and has excellent dimensional stability. Have. Therefore, by interposing the middle-layer wood fiber layer between the middle-layer wood veneer layer and the back layer wood veneer layer and further stacking the surface wood fiber layer on the upper surface of the middle-layer wood veneer layer to form the substrate, The shrinkage and expansion in the single plate layer can be suppressed by these wood fiber layers, and it becomes possible to obtain a substrate having extremely excellent dimensional stability. Incidentally, the rate of dimensional change due to moisture absorption / release of plywood is 0.02 to 0.03% per 1% of water content, so that the substrate used in the present invention has excellent dimensional stability comparable to plywood. It is understood that
【００１３】基板の表層を木質繊維層で構成するのは次
の理由による。即ち、木質繊維層は木質単板よりも比重
が高く圧縮強度が優れているため、表面への鉄球落下試
験においても好結果を得ることができ、ハイヒールやキ
ャスター等によって局所的に荷重が加えられても凹みに
くいという特性を有するからである。また、本発明の建
築用板が床材として用いられる場合にその表面に曲げ荷
重が作用したとき、表面側において生ずる圧縮の負荷に
対して表層木質繊維層が優れた耐圧縮性能を示すことに
より、床材として長さ方向および幅方向における曲げ強
度に優れた特性を有するものとなる。更に、木質繊維層
の有する優れた平滑性により、表層木質繊維層の表面に
化粧シートを貼着し又は塗装処理等を施した場合の仕上
がりが良好となる。The surface layer of the substrate is made of a wood fiber layer for the following reason. That is, since the wood fiber layer has a higher specific gravity and an excellent compressive strength than the wood veneer, good results can be obtained even in the iron ball drop test on the surface, and the load is locally applied by high heels or casters. This is because it has a characteristic that it is hard to be dented even if it is broken. Further, when the building board of the present invention is used as a flooring material, when a bending load acts on its surface, the surface wood fiber layer exhibits excellent compression resistance performance against the load of compression generated on the surface side. The flooring material has excellent bending strength in the length direction and the width direction. Furthermore, due to the excellent smoothness of the wood fiber layer, the finish is good when a decorative sheet is attached to the surface of the surface wood fiber layer or a coating treatment is performed.
【００１４】これら表層木質繊維層および中層木質繊維
層に用いる木質繊維層においては、前記中層木質単板層
および裏層木質単板層に用いる木質単板におけると同様
に、フェノール樹脂処理、アセチル化処理、エステル化
処理、ホルマル化処理、ＰＥＧ処理、ＷＰＣ処理等を施
して、基板の寸法安定性および機械的性質の向上を図る
ことができる。これらの処理は、例えば、針葉樹材又は
広葉樹材のチップを常法に従って解繊し乾燥した木質繊
維の段階で常法によって行うことができ、得られた処理
木質繊維を用いて木質繊維層を製造する。また、リン酸
アンモニウム、リン窒素化合物、ハロゲン化合物、スル
ファミン酸、ホウ酸等の公知の難燃化薬剤による防火処
理を施した木質繊維を用いて木質繊維層を製造すること
により、防火機能をも有する建築用板が得られる。In the wood fiber layers used for the surface wood fiber layer and the middle wood fiber layer, phenol resin treatment and acetylation are carried out in the same manner as in the wood veneers used for the middle wood veneer layer and the back wood veneer layer. By performing treatment, esterification treatment, formalization treatment, PEG treatment, WPC treatment and the like, the dimensional stability and mechanical properties of the substrate can be improved. These treatments can be carried out, for example, by a conventional method at the stage of defibrating and drying dried softwood chips or softwood chips according to a conventional method, and using the obtained treated wood fibers to produce a wood fiber layer. To do. Further, by producing a wood fiber layer using wood fibers that have been subjected to fire protection treatment with a known flame retardant agent such as ammonium phosphate, phosphorus nitrogen compounds, halogen compounds, sulfamic acid, boric acid, etc. A building board having is obtained.
【００１５】このようにして表面側から表層木質繊維
層、中層木質単板層、中層木質繊維層および裏層木質単
板層が順次積層されてなる基板の表面に貼着される化粧
シートとしては、例えば厚み０．２〜３ｍｍ程度の天然
木材を切削して得られる天然突板、人工突板、不織布、
紙、合成樹脂シート等のシート状物で裏打ちした突板シ
ート、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におい
て任意の柄模様印刷や単色の塗装が施されたもの等が例
示される。これらの化粧シートには、基板に貼着した
後、任意の上塗り処理を施すことができる。基板表面に
対する化粧シートの貼着は、例えば酢酸ビニル樹脂等の
熱可塑性接着剤に、耐水性向上のために熱硬化性樹脂又
は尿素粉末等を混入したものを用いて行うことができ
る。化粧シートの貼着面は、吸放湿による収縮膨張が小
さな木質繊維層（表層木質繊維層）で構成されているた
め、化粧シートとして突板シートを用いた場合にも突板
に割れが生じにくい。In this way, as a decorative sheet to be attached to the surface of a substrate formed by sequentially laminating the surface wood fiber layer, the middle wood veneer layer, the middle wood fiber layer and the back wood veneer layer from the surface side, , For example, natural veneer, artificial veneer, non-woven fabric obtained by cutting natural wood having a thickness of about 0.2 to 3 mm,
Veneer sheet lined with paper, synthetic resin sheet or other sheet material, 20-40 g / m 2 decorative paper, 32-500 g /
m 2 nonwoven, such as those arbitrary pattern pattern printing or monochromatic paint in parchment paper or the like of 50 g / m 2 has been performed is illustrated. These decorative sheets can be subjected to an arbitrary topcoating treatment after being attached to the substrate. The decorative sheet can be attached to the surface of the substrate by using, for example, a thermoplastic adhesive such as vinyl acetate resin mixed with a thermosetting resin or urea powder for improving water resistance. Since the adhering surface of the decorative sheet is composed of a wood fiber layer (surface layer wood fiber layer) which is less likely to shrink and expand due to moisture absorption and release, even when a veneer sheet is used as the decorative sheet, the veneer is unlikely to crack.
【００１６】基板の裏面には、ポリエチレンシートを芯
としてその表裏にクラフト紙を積層してなる防湿シート
が貼着される。このような防湿シートは、ポリエチレン
シートの表裏面に各々クラフト紙を積層した後、加熱圧
着して熱融着することによって得られる。A moisture-proof sheet having a polyethylene sheet as a core and kraft paper laminated on the front and back sides is attached to the back surface of the substrate. Such a moisture-proof sheet is obtained by laminating kraft paper on the front and back surfaces of a polyethylene sheet, followed by thermocompression bonding and heat fusion.
【００１７】防湿シートとしてこのような３層構造のも
のを用いることにより、基板における裏層木質単板層へ
の水分吸収が芯層のポリエチレン層によって防止される
と共に、ポリエチレンシートの表裏面にクラフト紙層が
存在することで基板裏面への接着剤による接着強度が良
好となるため、一般的なラミネータ装置により簡単に貼
着することができる。また、施工下地への接着剤塗布に
より十分に下地面との接着強度を得ることができる。By using such a three-layer structure as the moisture-proof sheet, the polyethylene layer of the core layer prevents moisture from being absorbed by the back-layer wood veneer layer in the substrate, and the craft sheets are formed on the front and back surfaces of the polyethylene sheet. Since the presence of the paper layer improves the adhesive strength of the adhesive to the back surface of the substrate, it can be easily attached by a general laminator device. Moreover, sufficient adhesive strength with the base surface can be obtained by applying an adhesive to the construction base.
【００１８】基板と防湿シートとの間または防湿シート
の裏面には、更に合成樹脂発泡体、不織布、天然又は合
成ゴム等の緩衝機能を有するシート材を貼着することに
より、防音性能、断熱性能等を付与し、或いは歩行感を
向上させることができる。By further adhering a sheet material having a cushioning function, such as synthetic resin foam, non-woven fabric, natural or synthetic rubber, between the substrate and the moisture-proof sheet or on the back surface of the moisture-proof sheet, the sound-proof and heat-insulating properties can be obtained. Etc., or the walking feeling can be improved.
【００１９】また、本発明の建築用板を施工する際に隣
接する建築用板同士を嵌合させるための手段として、建
築用板の側面には必要に応じて本実加工や相決り加工等
の実加工が施される。Further, as a means for fitting adjacent building boards to each other when constructing the building board of the present invention, the side surface of the building board may be subjected to actual machining or phase-shifting processing, if necessary. Is processed.
【００２０】本発明の建築用板は例えば以下のようにし
て製造される。即ち、予め製造した木質繊維板および木
質単板を準備し、木質繊維板を表層木質繊維層および中
層木質繊維層として用いると共に木質単板を中層木質単
板および裏層木質単板として用いて、これらを表面側よ
り表層木質繊維層、中層木質単板層、中層木質繊維層、
裏層木質単板層の順に接着剤を介して積層接着し、常法
に従ってプレスすることによって基板を得る。また、木
質繊維板の製造工程において、フォーミング装置により
接着剤を塗布乾燥された木質繊維をスクリーンベルト上
に堆積したものを一定寸法に切断し仮圧締することによ
り得られる木質繊維マットを用い、表面側に接着剤を塗
布した木質単板の上に該木質繊維マットを載せ、更にそ
の上に表裏面に接着剤を塗布した別の木質単板を載せ、
最後に別の木質繊維マットを載せた後に、熱圧プレスす
ることによっても、基板を得ることができる。この方法
は従来の木質繊維板の製造ラインをそのまま利用するこ
とができ、熱圧締も一回（ワンショット）で済む等工業
的に有利であり、しかも得られた基板における木質繊維
層と木質単板層との間の接着力が極めて大きなものとな
る。他に、スクリーンベルト上に木質単板を載せてフォ
ーミング装置に挿入し、該木質単板上に木質繊維を堆積
し、更に該木質繊維の上に別の木質単板を載せた後、更
にフォーミング装置にて木質繊維を堆積させ、次いで、
一定寸法に切断した後に仮圧締し熱圧プレスするか或い
は切断することなく仮圧締して連続して熱圧締した後に
切断する方法、フォーミング装置によりスクリーンベル
ト上に木質繊維を堆積した後、該木質繊維上に木質単板
を載せ、次に該木質単板上にフォーミング装置にて別の
木質繊維を堆積し、更に該木質繊維上に別の木質単板を
載せた後、一定寸法に切断した後に仮圧締し熱圧プレス
するか或いは切断することなく仮圧締して連続して熱圧
締した後に切断する方法、等の任意の方法によって本発
明の構成の基板を得ることができる。The building board of the present invention is manufactured, for example, as follows. That is, to prepare a wood fiberboard and wood veneer manufactured in advance, using the wood fiberboard as the surface layer wood fiber layer and the middle-layer wood fiber layer and the wood veneer as the middle-layer wood veneer and the back-layer wood veneer, These are the surface wood fiber layer, the middle wood veneer layer, the middle wood fiber layer from the surface side,
The back-layer wood veneer layer is laminated and bonded with an adhesive in this order, and pressed according to a conventional method to obtain a substrate. Also, in the manufacturing process of the wood fiber board, using a wood fiber mat obtained by cutting and temporarily pressing the wood fiber dried by applying an adhesive by a forming device and depositing it on the screen belt to a certain size, The wood fiber mat is placed on a wood veneer with an adhesive applied to the front side, and another wood veneer with an adhesive applied to the front and back is placed on it.
The substrate can also be obtained by finally applying another wood fiber mat and then hot pressing. This method can be used as it is on the conventional production line for wood fiberboard, and is industrially advantageous in that it requires only one heat pressing (one shot), and the wood fiber layer and wood on the obtained substrate can be used. The adhesive strength with the veneer layer becomes extremely large. In addition, a wood veneer is placed on the screen belt and inserted into a forming device, wood fibers are deposited on the wood veneer, and another wood veneer is placed on the wood fiber, and then forming is performed. Deposit the wood fibers in the device, then
After cutting to a certain size, temporarily pressing and hot pressing, or a method of temporarily pressing without cutting and continuously hot pressing and then cutting, after depositing wood fibers on the screen belt with a forming device , A wood veneer is placed on the wood fiber, then another wood fiber is deposited on the wood veneer by a forming device, and another wood veneer is further placed on the wood fiber, and then a certain size is obtained. A substrate having the constitution of the present invention can be obtained by any method such as temporary pressing after hot cutting and hot pressing, or temporary pressing without cutting and continuous hot pressing followed by cutting. You can
【００２１】このようにして得られた基板の表面に接着
剤を介して化粧シートを貼着すると共に、裏面に接着剤
を介して防湿シートを貼着することによって本発明の建
築用板が得られる。また、上記基板の製造において木質
繊維と木質単板とを組み合わせて製造する際に、化粧シ
ートおよび／または防湿シートも同時に載置積層した後
に圧締接着しても良い。The decorative sheet is attached to the surface of the substrate thus obtained via an adhesive and the moisture-proof sheet is attached to the back surface via an adhesive to obtain the building board of the present invention. To be Further, when the wood fiber and the wood veneer are combined in the manufacture of the above substrate, the decorative sheet and / or the moisture-proof sheet may be simultaneously placed and laminated and then pressure-bonded.
【００２２】[0022]
【実施例】図１は本発明による建築用板の一実施例とし
ての床材の構成を示すものであり、表面側より表層木質
繊維層２、中層木質単板層３、中層木質繊維層４、裏層
木質単板層５の順に積層接着されてなる基板１の表面に
化粧シート６が貼着されると共に、基板１の裏面にはポ
リエチレンシート７を芯としてその表裏にクラフト紙
８、８’が積層されてなる防湿シート９が貼着されてな
る。図中、１０は雄実、１１は雌実であって、これら雄
実および雌実同士の嵌合によって床材を連接施工し得る
ように構成されている。EXAMPLE FIG. 1 shows the construction of a flooring material as an example of a building board according to the present invention. From the surface side, a surface wood fiber layer 2, a middle wood veneer layer 3, and a middle wood fiber layer 4 are shown. The decorative sheet 6 is attached to the front surface of the substrate 1 which is laminated and adhered in the order of the back layer wood veneer layer 5, and the polyethylene sheet 7 is used as a core on the back surface of the substrate 1 and the kraft papers 8, 8 The moisture-proof sheet 9 made by stacking 'is attached. In the figure, 10 is a male fruit and 11 is a female fruit, and the floor material can be connected and constructed by fitting the male fruit and the female fruit to each other.
【００２３】[0023]
【発明の効果】本発明による建築用板は、基板の表面に
化粧シートが貼着されてなるものにおいて裏面に防湿シ
ートが貼着されているため、水分吸収による膨張率が表
裏において実質的に均衡され、反りの発生が防止され
る。EFFECTS OF THE INVENTION The building board according to the present invention has a decorative sheet adhered to the front surface of a substrate, and a moisture-proof sheet adhered to the back surface thereof. Balanced and warpage is prevented.
【００２４】本発明はまた、基板として従来使用されて
いる合板の単板の一部を木質繊維層に置換してなる新規
な構成の積層板を用いることを提案するものであり、こ
れら木質繊維層は単板としては使用できないような欠点
のある原木であっても小さく破砕或いは解繊したものを
用いて得られるため、資源の有効利用および自然破壊の
防止に役立つ。The present invention also proposes to use a laminated board having a novel structure in which a part of a veneer of plywood conventionally used as a substrate is replaced with a wood fiber layer. The layer is useful for effective use of resources and prevention of natural destruction because even a log having a defect that cannot be used as a veneer can be obtained by crushing or defibrating it into small pieces.
【００２５】これら木質繊維層は本来的に寸法安定性お
よび機械的強度に優れたものであるため、単板に代えて
用いても、合板に比して遜色のない特性が得られる。ま
た、基板の中層木質単板層と裏層木質単板層の繊維方向
を共に建築用板の長さ方向に平行とすることにより、長
さ方向の寸法安定性および機械的強度が更に向上され、
これら単板層の間および表層面に木質繊維層が配される
ことと相俟って、特に長さ方向において極めて優れた寸
法安定性および強度特性を発揮することができ、床材と
して使用する場合に好適なものとなる。Since these wood fiber layers are originally excellent in dimensional stability and mechanical strength, even if they are used in place of a veneer, properties comparable to plywood can be obtained. In addition, by making the fiber directions of the middle-layer wood veneer layer and the back-layer wood veneer layer parallel to the length direction of the building board, the dimensional stability and mechanical strength in the length direction are further improved. ,
Combined with the fact that a wood fiber layer is arranged between these veneer layers and on the surface layer, it can exhibit extremely excellent dimensional stability and strength characteristics especially in the length direction, and is used as a flooring material. It is suitable in some cases.
【００２６】基板の表層面には平滑性に優れ、機械的強
度が大きく、吸放湿による収縮膨張が小さい木質繊維層
が配されるため、化粧シートの貼着が容易であり、床材
として使用された場合に局所的な荷重に耐え、更には化
粧シートとして突板シートを用いた場合にも収縮膨張の
影響による突板の割れが生じにくくなる等の効果を有す
る。Since the surface layer of the substrate is provided with a wood fiber layer having excellent smoothness, high mechanical strength, and small shrinkage and expansion due to moisture absorption and desorption, it is easy to attach a decorative sheet and used as a flooring material. When used, it has the effect of withstanding a local load, and even when a veneer sheet is used as the decorative sheet, cracks in the veneer are less likely to occur due to the effects of contraction and expansion.
【００２７】基板の裏面に貼着される防湿シートは、ポ
リエチレンシートを芯としてその表裏にクラフト紙が積
層一体化されてなる３層構造のものであり、芯層のポリ
エチレンシートによる防水効果に加えて、表裏面におけ
るクラフト紙が基板裏面および下地面に対する良好な接
着強度を発揮する。The moisture-proof sheet attached to the back surface of the substrate has a three-layer structure in which a polyethylene sheet is used as a core and kraft paper is laminated and integrated on the front and back sides, and in addition to the waterproof effect of the polyethylene sheet of the core layer. Thus, the kraft paper on the front and back surfaces exhibits good adhesive strength to the back and substrate surfaces of the substrate.
【図１】本発明の一実施例による床材の構成を示す斜視
図である。FIG. 1 is a perspective view showing a configuration of a flooring material according to an embodiment of the present invention.
１ 基板 ２ 表層木質繊維層 ３ 中層木質単板層 ４ 中層木質繊維層 ５ 裏層木質単板層 ６ 化粧シート ７ ポリエチレンシート ８、８’ クラフト紙 ９ 防湿シート １０ 雄実 １１ 雌実 1 Substrate 2 Surface wood fiber layer 3 Middle wood veneer layer 4 Middle wood fiber layer 5 Back layer Wood veneer layer 6 Decorative sheet 7 Polyethylene sheet 8, 8'craft paper 9 Moisture-proof sheet 10 Male fruit 11 Female fruit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ３２Ｂ 27/10 8413−4Ｆ 27/32 Ｚ 8115−4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B32B 27/10 8413-4F 27/32 Z 8115-4F
Claims (3)
芯としてその表裏にクラフト紙を積層してなる防湿シー
トが貼着されてなることを特徴とする建築用板。1. A building board, characterized in that a moisture-proof sheet comprising a polyethylene sheet as a core and kraft paper laminated on the front and back thereof is attached to the back surface of the substrate.
単板層、中層木質繊維層および裏層木質単板層の順で積
層一体化されてなる基板の表面に、化粧シートが貼着さ
れると共に、前記基板の裏面に、ポリエチレンシートを
芯としてその表裏にクラフト紙を積層してなる防湿シー
トが貼着されてなることを特徴とする建築用板。2. A decorative sheet is adhered to a surface of a substrate formed by laminating a surface wood fiber layer, a middle wood veneer layer, a middle wood fiber layer and a back wood veneer layer in this order from the surface side. At the same time, a moisture-proof sheet having a polyethylene sheet as a core and kraft paper laminated on the front and back thereof is attached to the back surface of the substrate.
単板層、中層木質繊維層および裏層木質単板層の順で積
層一体化され、前記中層木質単板層および裏層木質単板
層の繊維方向が共に建築用板の長さ方向と平行となるよ
うに積層されてなる基板の表面に、化粧シートが貼着さ
れると共に、前記基板の裏面に、ポリエチレンシートを
芯としてその表裏にクラフト紙を積層してなる防湿シー
トが貼着されてなることを特徴とする建築用板。3. A surface-layer wood fiber layer, a middle-layer wood veneer layer, a middle-layer wood fiber layer and a back-layer wood veneer layer are laminated and integrated in this order, and the middle-layer wood veneer layer and the back-layer wood veneer are laminated. A decorative sheet is attached to the surface of a substrate that is laminated such that the fiber directions of the layers are both parallel to the length direction of the building board, and a polyethylene sheet is used as a core on the front and back of the decorative sheet on the back surface of the substrate. A building board, characterized in that a moisture-proof sheet formed by laminating kraft paper is adhered to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5092095A JP2733641B2 (en) | 1993-03-26 | 1993-03-26 | Architectural board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5092095A JP2733641B2 (en) | 1993-03-26 | 1993-03-26 | Architectural board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06280376A true JPH06280376A (en) | 1994-10-04 |
| JP2733641B2 JP2733641B2 (en) | 1998-03-30 |
Family
ID=14044896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5092095A Expired - Fee Related JP2733641B2 (en) | 1993-03-26 | 1993-03-26 | Architectural board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2733641B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0929919A (en) * | 1995-07-20 | 1997-02-04 | Dainippon Printing Co Ltd | Decorative panel |
| JPH09300524A (en) * | 1996-05-17 | 1997-11-25 | Dainippon Printing Co Ltd | Decorative panel |
| JPH10121707A (en) * | 1996-10-21 | 1998-05-12 | Eidai Co Ltd | Composite base material for floor panel and floor panel |
| JP2001253014A (en) * | 2000-03-09 | 2001-09-18 | Dainippon Printing Co Ltd | Decorative panel and flash panel |
| JP2005145077A (en) * | 2005-01-26 | 2005-06-09 | Dainippon Printing Co Ltd | Decorative laminate |
| WO2008038869A1 (en) * | 2006-09-26 | 2008-04-03 | Lg Chem, Ltd. | Wood flooring with carbonized solid wood using symmetric structure and process for preparing the same |
| JP2008173810A (en) * | 2007-01-17 | 2008-07-31 | Matsushita Electric Works Ltd | Method for producing functional particle board |
| JP2010242484A (en) * | 2008-07-22 | 2010-10-28 | Dainippon Printing Co Ltd | Decorative material for flooring |
| US7866115B2 (en) * | 2002-03-20 | 2011-01-11 | Valinge Innovation Ab | Floorboards with decorative grooves |
| CN102337770A (en) * | 2011-04-12 | 2012-02-01 | 上海亮世国际贸易有限公司 | Building sheet material and its manufacture method |
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| US8935899B2 (en) | 2012-02-02 | 2015-01-20 | Valinge Innovation Ab | Lamella core and a method for producing it |
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| JP2013067974A (en) * | 2011-09-21 | 2013-04-18 | Panasonic Corp | Manufacturing method of building material panel |
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|---|---|---|---|---|
| JPS6072233U (en) * | 1983-10-26 | 1985-05-21 | 株式会社ノダ | Interior material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6072233U (en) * | 1983-10-26 | 1985-05-21 | 株式会社ノダ | Interior material |
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|---|---|---|---|---|
| JPH0929919A (en) * | 1995-07-20 | 1997-02-04 | Dainippon Printing Co Ltd | Decorative panel |
| JPH09300524A (en) * | 1996-05-17 | 1997-11-25 | Dainippon Printing Co Ltd | Decorative panel |
| JPH10121707A (en) * | 1996-10-21 | 1998-05-12 | Eidai Co Ltd | Composite base material for floor panel and floor panel |
| JP2001253014A (en) * | 2000-03-09 | 2001-09-18 | Dainippon Printing Co Ltd | Decorative panel and flash panel |
| US11498305B2 (en) | 2002-03-20 | 2022-11-15 | Valinge Innovation Ab | Floorboards with decorative grooves |
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