JPH0585627U - Veneer - Google Patents
VeneerInfo
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- JPH0585627U JPH0585627U JP3790692U JP3790692U JPH0585627U JP H0585627 U JPH0585627 U JP H0585627U JP 3790692 U JP3790692 U JP 3790692U JP 3790692 U JP3790692 U JP 3790692U JP H0585627 U JPH0585627 U JP H0585627U
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Abstract
(57)【要約】
【目的】合板を台板とする化粧板に代えて資源的に豊富
な材料で性能の劣らない化粧板を得ること。
【構成】厚さ方向における中心層２に比べ比重が高く、
しかも中心層２に比べ非透水性の高い硬質層を表裏層に
設けると共に、少なくとも片側の表面あるいは裏面に硬
質層が露出した木質繊維板の、硬質層１ａ，１ｂの上に
化粧シートが貼着された化粧板。
(57) [Summary] [Purpose] To obtain a decorative board which is not inferior in performance and is made of a resource-rich material instead of the decorative board using plywood as a base plate. [Structure] Higher specific gravity than the central layer 2 in the thickness direction,
Moreover, a hard layer having higher water impermeability than that of the central layer 2 is provided on the front and back layers, and a decorative sheet is attached on the hard layers 1a and 1b of the wood fiberboard in which the hard layer is exposed on at least one surface or back surface. Veneer.
Description
【０００１】[0001]
本考案は、建築の表装、内装および家具等に使用される化粧板に関する。 The present invention relates to a decorative board used for building exteriors, interiors, furniture, and the like.
【０００２】[0002]
従来化粧板として、単板をその繊維方向を互いに直交に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．）などを 基板として、その表面に木目模様を印刷したものあるいは化粧シートを貼着した ものが大量に使用されている。 Conventionally, as a decorative board, plywood in which veneers are laminated and bonded by making their fiber directions orthogonal to each other, parallel plywood (LVL) in which fiber directions of veneers are laminated and bonded in the same direction, etc. are used as substrates. A large number of products are printed with a wood pattern on their surface or have a decorative sheet attached.
【０００３】 これらは、ムク材に比べ安価に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。[0003] These materials can be supplied at a lower cost than Muku wood, and are excellent in dimensional stability, and are indispensable as one of the current building materials.
【０００４】 この化粧板の基板として主に用いられる合板は、天然木材を薄く剥ぎ取った単 板を積層接着し製造するものであり、天然資源の枯渇問題が世界的に大きく取り 上げられている現在、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りつつあ る。Plywood, which is mainly used as a substrate of this decorative board, is manufactured by laminating and bonding single boards obtained by thinly peeling natural wood, and the problem of depletion of natural resources has been widely taken up worldwide. At present, it becomes difficult to cut raw wood, which is a raw material, and the quality of the raw wood deteriorates, making it difficult to obtain a large amount of good-quality veneer to be used for veneer. Is becoming difficult to supply to the market.
【０００５】[0005]
本考案は合板を台板とする化粧板に代えて資源的に豊富な材料で性能の劣らな い新規な化粧板を提供することを課題とする。 An object of the present invention is to provide a new decorative board which is a resource-rich material and does not deteriorate in performance, instead of the decorative board using plywood as a base plate.
【０００６】[0006]
本考案は厚さ方向における中心層２に比べ比重が高く、しかも中心層２に比べ 非透水性の高い硬質層１ａ，１ｂを表裏層に設けると共に、少なくとも片側の表 面あるいは裏面に硬質層が露出した木質繊維板の、硬質層１ａ，１ｂの上に化粧 シート４が貼着された化粧板を技術的手段とする。 In the present invention, hard layers 1a and 1b having a higher specific gravity in the thickness direction than the central layer 2 and higher water impermeability than the central layer 2 are provided on the front and back layers, and the hard layer is formed on at least one of the front and back surfaces. A technical board is a decorative board in which the decorative sheet 4 is adhered on the hard layers 1a and 1b of the exposed wood fiber board.
【０００７】 以下本考案の化粧板の実施例を図面に基づいて説明する。 本考案の化粧板は、図１に示すように、表裏層に硬質層１ａおよび１ｂと、そ の間に中心層２が配された一体成形により得られる３層構造からなり、表面側の 硬質層１ａが表面に露出した木質繊維板３の、該硬質層１ａの上に化粧シート４ が貼着された化粧板を示している。An embodiment of the decorative board of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the decorative board of the present invention has a three-layer structure obtained by integral molding in which hard layers 1a and 1b are provided on the front and back layers, and a central layer 2 is arranged between them, and the hard layer on the surface side is formed. 1 shows a wood fiberboard 3 having a layer 1a exposed on its surface, in which a decorative sheet 4 is adhered onto the hard layer 1a.
【０００８】 また、本考案の他の態様として、図２に示すように、表裏面の硬質層１ａおよ び１ｂを表面に露出し、表面側のみ化粧シートを貼着したもの、あるいは図３に 示すように裏面側の硬質層の上にも化粧シートを貼着し、両面を化粧面として用 いるものなどが挙げられる。Further, as another embodiment of the present invention, as shown in FIG. 2, the hard layers 1a and 1b on the front and back surfaces are exposed on the surface and a decorative sheet is attached only on the front surface side, or FIG. As shown in Fig. 2, a decorative sheet is attached on the hard layer on the back side, and both sides are used as decorative surfaces.
【０００９】 本考案の木質繊維板３の表面または裏面に形成される硬質層１ａおよび１ｂは 、その比重が平均して０．８〜１．４ｇ／ｃｍ３、好ましくは１．０〜１．２ｇ ／ｃｍ３の範囲であり、その間の中心層２の比重は、０．４〜０．７５ｇ／ｃｍ３ 、好ましくは０．６〜０．７ｇ／ｃｍ３の範囲であり、硬質層１は中心層２の 比重に比べ少なくとも０．１ｇ／ｃｍ３以上好ましくは０．３〜０．８ｇ／ｃｍ３ の比重差を有することが好ましい。The hard layers 1a and 1b formed on the front surface or the back surface of the wood fiberboard 3 of the present invention have an average specific gravity of 0.8 to 1.4 g / cm 3 , preferably 1.0 to 1. in the range of 2 g / cm 3, the specific gravity between the central layer 2, 0.4~0.75g / cm 3, preferably in the range from 0.6~0.7g / cm 3, hard layer 1 at least 0.1 g / cm 3 or more preferably than the specific gravity of the center layer 2 preferably has a difference in specific gravity between 0.3 to 0.8 g / cm 3.
【００１０】 このように中心層に比べ比重が高く引っ張り強度および圧縮強度が優れた硬質 層１ａおよび１ｂが表裏層に配されることにより、表面硬度が高くキズがつきに くく、板材全体として曲げ強度に優れ、また単位荷重によるたわみ量も非常に小 さいものとなる。As described above, the hard layers 1a and 1b having higher specific gravity and excellent tensile strength and compressive strength than the central layer are arranged on the front and back layers, so that the surface hardness is high and the scratches are hard to occur, and the whole plate material is bent. It has excellent strength and the amount of deflection per unit load is extremely small.
【００１１】 硬質層の比重が０．８ｇ／ｃｍ３より低い非透水性が低く、キズがつき易く側 圧によるたわみ量も大きくなり化粧板として好ましくない。The specific gravity of the hard layer is lower than 0.8 g / cm 3 , the water impermeability is low, and the hard layer is easily scratched and the amount of deflection due to lateral pressure is large, which is not preferable as a decorative board.
【００１２】 また、硬質層の比重が１．４ｇ／ｃｍ３より大きいと、耐衝撃性能が悪くもろ い板材となってしまうため好ましくない。If the specific gravity of the hard layer is larger than 1.4 g / cm 3, it is not preferable because the impact resistance is poor and a brittle plate material is obtained.
【００１３】 また、中心層の比重が０．４ｇ／ｃｍ３より低いと十分な強度が得られず、逆 に０．７５ｇ／ｃｍ３より大きいと板材としての全体重量が上がってしまい取り 扱いにくくなり好ましくない。Further, if the specific gravity of the central layer is lower than 0.4 g / cm 3 , sufficient strength cannot be obtained, and conversely, if the specific gravity is higher than 0.75 g / cm 3 , the overall weight of the plate material increases and it is difficult to handle. It is not preferable.
【００１４】 さらに、硬質層１ａおよび１ｂと中心層２との比重の差が０．１ｇ／ｃｍ３よ り小さいと表裏層に設ける硬質層の厚さを中心層と同等に厚くしないと十分な曲 げ強度、たわみが得られず、結果的に重量の重い板材となってしまい作業性が悪 い、逆に比重の差が０．８ｇ／ｃｍ３より大きいと硬質層１ａおよび１ｂと中心 層２と機械的物性に大きな差が生ずることとなる。Furthermore, if the difference in specific gravity between the hard layers 1a and 1b and the central layer 2 is smaller than 0.1 g / cm 3 , it is sufficient if the thickness of the hard layers provided on the front and back layers is not made equal to that of the central layer. Bending strength and bending are not obtained, resulting in a heavy plate material with poor workability. Conversely, if the difference in specific gravity is greater than 0.8 g / cm 3 , the hard layers 1a and 1b and the central layer are There will be a large difference in mechanical properties from No. 2.
【００１５】 例えば表面に曲げ荷重がかかった際に、表裏層の硬質層は比重が高いため木質 繊維間が密な状態となっており面方向での収縮が起こりにくいのに対し、中心層 は比重が小さいため木質繊維間が疎の状態となっており容易に収縮する等の違い により、中心層と硬質層との間で層間剥離が生じ易くなるため好ましくない。For example, when a bending load is applied to the surface, the hard layers of the front and back layers have a high specific gravity, so that the wood fibers are in a dense state and the shrinkage in the plane direction is unlikely to occur, whereas the center layer is Since the specific gravity is small, the wood fibers are in a sparse state, and the wood fibers are easily contracted, so that delamination easily occurs between the central layer and the hard layer, which is not preferable.
【００１６】 さらに、この表裏層に形成される硬質層１ａおよび１ｂが表面あるいは裏面に 露出することにより、最も強度の高い部分が厚さ方向の最も外の部分に配され、 前述の曲げ強度およびたわみ性能はさらに高いものとなり、表面の硬度も大きい ため傷つきにくく局所的な衝撃により凹むこともなくなる。Further, by exposing the hard layers 1a and 1b formed on the front and back layers to the front surface or the back surface, the portion having the highest strength is arranged at the outermost portion in the thickness direction, and the above-mentioned bending strength and The flexibility is even higher, and the hardness of the surface is great so that it is not easily scratched and will not dent due to local impact.
【００１７】 このような硬質層１ａおよび１ｂは、乾式法による木質繊維板の製造工程にお いて加熱圧締の際の表裏層の木質繊維の含水率を高めること、または、木質繊維 への接着剤の添加量を増加させることにより他の部分に比べ局所的に比重の高い 層を形成することができる。Such hard layers 1a and 1b are used to increase the water content of the wood fibers in the front and back layers at the time of heating and pressing in the manufacturing process of the wood fiber board by the dry method, or to adhere to the wood fibers. By increasing the addition amount of the agent, it is possible to form a layer having a higher specific gravity locally than other portions.
【００１８】 さらに、この硬質層１ａおよび１ｂは、中心層２に比べ非透水性が高いため板 材内への吸水性を著しく低下させる効果を有し、化粧板として用いた場合の防湿 性能も良好なものである。Further, since the hard layers 1a and 1b have higher water impermeability than the central layer 2, they have an effect of remarkably reducing the water absorption into the plate material, and also have a moisture-proof property when used as a decorative plate. It is a good one.
【００１９】 この非透水性の高い硬質層１ａおよび１ｂは、硬質層１ａおよび１ｂを形成す る木質繊維に耐水性を付与するロジンサイズ、ワックスサイズ、クマロンロジン サイズおよびアスファルトサイズ等のサイズ剤が２〜８重量％付着または含有さ れていることおよび硬質層１ａおよび１ｂの比重が前述の通り０．８〜１．４ｇ ／ｃｍ３、好ましくは１．０〜１．２ｇ／ｃｍ３に形成されていることの複合作 用により非透水性が高い性質を有するものである。The hard layers 1a and 1b having high water impermeability include sizing agents such as rosin size, wax size, coumarone rosin size and asphalt size which impart water resistance to the wood fibers forming the hard layers 1a and 1b. 8 specific gravity of it and hard layers 1a and 1b weight percent are attached or are contained in previously described 0.8 to 1.4 g / cm 3, preferably formed in 1.0~1.2g / cm 3 It has the property of high water impermeability due to its combined use.
【００２０】 サイズ剤の含有量が２重量％より少ないと非透水性が十分に付与されず、また 、８重量％より多く含有されると硬質層１ａおよび１ｂの木質繊維間の接着強度 が低下してしまい好ましくない。When the content of the sizing agent is less than 2% by weight, water impermeability is not sufficiently imparted, and when it is more than 8% by weight, the adhesive strength between the wood fibers of the hard layers 1a and 1b is lowered. It is not preferable because it does.
【００２１】 このように、耐水性を付与するサイズ剤が硬質層１ａおよび１ｂを形成する木 質繊維の一本一本に塗布または含有された状態で、一体的に硬質層１ａおよび１ ｂを形成するため、硬質層１ａおよび１ｂ全体が非透水性の高い層となり吸湿に よる寸法の変化や 反りまたは腐敗菌による腐り等の問題も生じないものである 。In this way, the hard layers 1a and 1b are integrally formed in a state where the sizing agent imparting water resistance is applied to or contained in each of the wood fibers forming the hard layers 1a and 1b. Since it is formed, the entire hard layers 1a and 1b become a highly water-impermeable layer, and problems such as dimensional change due to moisture absorption, warpage, and decay due to spoilage bacteria do not occur.
【００２２】 さらに、必要に応じ木質繊維板４に対し、アマニ油、綿油、桐油、大豆油、魚 油、トール油等の乾性油、あるいはアルキット樹脂、石炭酸樹脂、リグニン樹脂 、ラテックス等の合成樹脂を表裏面の硬質層１ａおよび１ｂに含浸させ加熱処理 して硬化させる油含浸処理を施すことにより、非透水性をさらに高め、同時に油 の塗布または含有により硬質層１ａおよび１ｂの比重が高まることでさらに強度 の向上を図ることができる。Furthermore, if necessary, a drying oil such as linseed oil, cotton oil, tung oil, soybean oil, fish oil, tall oil, or a synthetic oil such as alkyd resin, carboxylic acid resin, lignin resin, or latex is added to the wood fiber board 4. By impregnating the hard layers 1a and 1b on the front and back surfaces with a resin and applying an oil impregnation treatment to heat and cure, the water impermeability is further enhanced, and at the same time the specific gravity of the hard layers 1a and 1b is increased by the application or inclusion of oil. Therefore, the strength can be further improved.
【００２３】 また、このように比重の高い硬質層１ａおよび１ｂの間に、比重の低い中心層 ２が存在することにより、板材としての重量は非常に軽いものとなり持ち運びが 容易で作業性も良好なものである。In addition, since the center layer 2 having a low specific gravity is present between the hard layers 1a and 1b having a high specific gravity, the weight of the plate material becomes very light, and it is easy to carry and has good workability. It is something.
【００２４】 また、本考案の基板となる木質繊維板４は、表裏面に露出した硬質層１ａおよ び１ｂとその間に配された中心層２とが、木質繊維板の製造工程における加熱圧 締により一体的成型され、１枚の板材となるため、硬質層１ａおよび１ｂと中心 層２とは木質繊維の絡み合いにより一体的に連続しており、複数枚の板材を接着 剤により接着して１枚の板材を形成した場合の、板材間での剥離の問題なども生 じないものである。Further, in the wood fiber board 4 which is the substrate of the present invention, the hard layers 1a and 1b exposed on the front and back surfaces and the central layer 2 arranged between them are the heating pressures in the manufacturing process of the wood fiber board. Since the hard layers 1a and 1b and the central layer 2 are integrally continuous by being integrally molded by tightening, the hard layers 1a and 1b and the central layer 2 are integrally connected to each other. When one plate is formed, the problem of peeling between the plates does not occur.
【００２５】 また、木質繊維板３の露出した硬質層の上に貼着する化粧シート４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、２０−４０ｇ／ｍ２の化粧紙、３２−５００ｇ／ｍ２の不織布、５９ｇ／ ｍ２のパーチメント紙等の柄模様印刷や単色の塗装が施されたものを用いること ができる。As the decorative sheet 4 to be attached on the exposed hard layer of the wood fiberboard 3, for example, natural veneer obtained by cutting natural wood with a thickness of about 0.2-3 mm, artificial veneer, 20-40 g / m 2 decorative paper, 32-500 g / m 2 non-woven fabric, 59 g / m 2 parchment paper or the like, which has been subjected to pattern pattern printing or monochromatic coating, can be used.
【００２６】 化粧シート接着は、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。For the adhesion of the decorative sheet, a thermoplastic adhesive such as vinyl acetate resin mixed with a thermosetting resin or urea powder for improving water resistance can be used.
【００２７】 また、本考案の基板となる木質繊維板３は、表面の圧縮強度が強く、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、化粧シート４を貼着 した後の仕上がりが優れ、化粧シートとして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。In addition, the wood fiber board 3 which is the substrate of the present invention has a high surface compressive strength and excellent smoothness, and since the contraction and expansion due to moisture absorption and desorption is small, the decorative sheet 4 is attached. It has excellent properties such as excellent finish after being processed, and cracks hardly occur even when a veneer sheet is attached as a decorative sheet.
【００２８】 また、本考案の基板である木質繊維板４に用いる木質繊維としては、松、杉、 桧等の針葉樹材または、ラワン、カポール、栗、ポプラ等の広葉樹材の原木で板 材あるいは角材として使用できない部分または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、および木質繊維板製造の際に生じるサンダ ーダスト、ソーダスト、チップダスト等の屑材を混入し用いることができる。As the wood fiber used for the wood fiber board 4 which is the substrate of the present invention, softwood materials such as pine, cedar and cypress, or hardwood raw materials such as rawan, kapole, chestnut and poplar can be used as the wood material or Use by mixing wood fibers obtained by defibrating wood chips obtained by cutting parts that cannot be used as square wood or waste wood by a conventional method, and scrap materials such as sand dust, saw dust, and chip dust generated during the production of wood fiber boards. be able to.
【００２９】 本考案の木質繊維板３は、例えば乾式法による木質繊維板の製造工程において 、解繊され接着剤を添加し乾燥した木質繊維を、フォーミング装置によりスクリ ーンコンベアー上に堆積し、シェイビングローターにより厚みを各々調整し次い で仮圧締することにより木質繊維マットを得、次いで一定寸法に裁断された定尺 マットを加熱圧締することにより得られる中比重繊維板が用いられる。The wood fiberboard 3 of the present invention is, for example, in a manufacturing process of a wood fiberboard by a dry method, defibrated and added with an adhesive and dried wood fibers are deposited on a screen conveyor by a forming device, and a shaving rotor is used. A wood fiber mat is obtained by adjusting the thickness of each of the above and then temporarily pressing, and then a medium-density fiber board obtained by heating and pressing a fixed-length mat cut into a certain size is used.
【００３０】 また、先と同様にして得られる定尺マットの上面および下面に水の塗布または 含有された不織布、紙、布等の保水性のあるシート状物を載置し加熱圧締するこ とにより、シート状物に塗布または含有された水分が表裏層の木質繊維中に保持 されながら加熱圧締されるため、表裏面に比重の非常に高い硬質層１ａおよび１ ｂを形成することができる。Further, a water-retaining sheet-like material such as a non-woven fabric, paper, or cloth coated with water is placed on the upper surface and the lower surface of the standard length mat obtained in the same manner as above, and heated and compressed. As a result, the water applied or contained in the sheet-like material is heated and pressed while being retained in the wood fibers of the front and back layers, so that the hard layers 1a and 1b having extremely high specific gravity can be formed on the front and back surfaces. it can.
【００３１】 また、スクリーンコンベアー上に木質繊維を堆積させるフォーミング装置とし て、裏層形成木質繊維、中層形成木質繊維、表層形成木質繊維をそれぞれ別々に フォーミングしスクリーンコンベアー上に堆積させる３台のフォーミング装置を 設ける。Further, as a forming device for depositing wood fibers on the screen conveyor, three forming units for separately forming back layer forming wood fibers, middle layer forming wood fibers and surface layer forming wood fibers and depositing them on the screen conveyor are used. Provide a device.
【００３２】 例えば中心層形成木質繊維への接着剤の添加量を３〜５重量％加え、表層形成 木質繊維および裏層木質繊維への接着剤の添加量を１０〜３０重量％加えた後に 加熱圧締することにより、前述の水分による硬質層の形成方法とあわせて硬質層 の比重を上げると共に強度の向上を図ることができる。For example, after adding 3 to 5% by weight of the adhesive to the central layer-forming wood fiber and adding 10 to 30% by weight of the adhesive to the surface layer-forming wood fiber and the back layer wood fiber, heating is performed. By tightening, the specific gravity of the hard layer can be increased and the strength can be improved together with the above-described method of forming the hard layer with water.
【００３３】 また、同様のフォーミング装置において、裏層形成木質繊維および表層形成木 質繊維として２〜８重量％サイズ剤を塗布または含有させたものをフォーミング 装置に供給させるようにし、裏層、中層、表層の３層の木質繊誰を積層堆積させ た後、加熱圧締することにより、表層および裏層のサイズ剤の含有量を２重量％ 以上とすることができる。In the same forming device, the backing layer-forming wood fiber and the surface layer-forming wood fiber coated with or containing 2 to 8% by weight of a sizing agent are supplied to the forming device. The content of the sizing agent in the surface layer and the back layer can be increased to 2% by weight or more by stacking and stacking three layers of wood fibers on the surface layer and then heating and pressing.
【００３４】 このようにして木質繊維板の表裏面には、中心層２に比較して比重が高く、非 透水性の高い硬質層１ａおよび１ｂが形成される。In this way, the hard layers 1a and 1b having higher specific gravity and higher water impermeability than the central layer 2 are formed on the front and back surfaces of the wood fiber board.
【００３５】 また、得られた木質繊維板の硬質層１ａおよび１ｂの中でも比重分布が生ずる ため、必要に応じサンディングを施し、硬質層１ａおよび１ｂの中でも特に比重 の高い層（面）を表面に露出することにより、非透水性、曲げ強度およびたわみ 等の性能がさらに優れたものとなる。Further, since a specific gravity distribution also occurs in the hard layers 1a and 1b of the obtained wood fiber board, sanding is performed as necessary, and a layer (face) having a particularly high specific gravity among the hard layers 1a and 1b is formed on the surface. By exposing, the properties such as water impermeability, flexural strength, and flexure will be further improved.
【００３６】 さらに得られた木質繊維板３の表面に乾性油、合成樹脂等を塗布した後加熱硬 化させるが、木質繊維板をこれら乾性油または合成樹脂中に浸漬させた後加熱硬 化させることにより油塗布または含有処理を施すことができ、非透水性の向上お よび強度の向上を図ることができる。Further, the surface of the obtained wood fiber board 3 is coated with a drying oil, a synthetic resin or the like and then heated and hardened. The wood fiber board is dipped in the dry oil or the synthetic resin and then heated and hardened. As a result, oil coating or content treatment can be performed, and water impermeability and strength can be improved.
【００３７】[0037]
本考案の化粧板は、木質繊維を加熱圧締して得られる木質繊維板を基板とし、 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。 The decorative board of the present invention uses a wood fiber board obtained by heating and pressing wood fibers as a substrate, and this wood fiber board is obtained by crushing or defibrating a raw wood which has a defect that cannot be used as a single board. Because it is used, it can be an effective use of resources and can help prevent the destruction of nature.
【００３８】 さらに、表裏面に露出した硬質層は、中心層に比べ比重が高くしかも木質繊維 中のサイズ剤の含有量も２％以上と多いことの複合作用により非透水性が高いも のである。Further, the hard layers exposed on the front and back surfaces have a higher specific gravity than the central layer, and the content of the sizing agent in the wood fibers is as high as 2% or more, so that the hard layers have a high water impermeability. .
【００３９】 さらに、耐水性を付与するサイズ剤が硬質層を形成する木質繊維の一本一本に 塗布または含有された状態で、一体的に硬質層を形成するため、硬質層全体が非 透水性の高い層を形成する。このため吸湿による寸法変化や反りが生じにくく、 また、腐敗菌による腐り等も生じない。Further, since the sizing agent imparting water resistance is applied or contained in each of the wood fibers forming the hard layer to integrally form the hard layer, the entire hard layer is impermeable to water. To form a highly reliable layer. For this reason, dimensional changes and warpage due to moisture absorption are unlikely to occur, and decay due to spoilage bacteria does not occur.
【００４０】 また、木質繊維板の表面に露出した硬質層は、表面の圧縮強度が強く、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、化粧シートを貼着 した後の仕上がりが優れ、化粧シートとして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化粧板である。In addition, the hard layer exposed on the surface of the wood fiberboard has high surface compressive strength and excellent smoothness, and since the contraction and expansion due to moisture absorption and desorption is small, a decorative sheet was attached. It is a decorative board that has excellent properties such as excellent finish afterwards and is unlikely to crack even when a veneer sheet is attached as a decorative sheet.
【図面の簡単な説明】[Brief description of drawings]
【図１】 表裏層に硬質層１ａ，１ｂのうち表面側の硬
質層１ａを露出した３層構造の表面側に化粧シート４を
貼着した場合の断面図、FIG. 1 is a cross-sectional view in which a decorative sheet 4 is attached to the front surface side of a three-layer structure in which the hard layer 1a on the front surface side of the hard layers 1a and 1b is exposed to the front and back layers,
【図２】 裏面側のみに化粧シート４を貼着した場合の
断面図、FIG. 2 is a cross-sectional view when the decorative sheet 4 is attached only to the back side,
【図３】 裏面側のみに化粧シート４を貼着した場合の
断面図、FIG. 3 is a cross-sectional view when the decorative sheet 4 is attached only to the back side,
１ａ：硬質層、１ｂ：硬質層、２：中心層、３：木質繊
維板、４：化粧シート。1a: hard layer, 1b: hard layer, 2: central layer, 3: wood fiberboard, 4: decorative sheet.
Claims (2)
く、しかも中心層に比べ非透水性の高い硬質層を表裏層
に設けると共に、少なくとも片側の表面あるいは裏面に
硬質層が露出した木質繊維板の、硬質層の上に化粧シー
トが貼着されてなる化粧板。1. A wood fiber in which a hard layer having a higher specific gravity in the thickness direction than that of the central layer and a higher water impermeability than that of the central layer is provided on the front and back layers, and the hard layer is exposed on at least one surface or back surface. A decorative board in which a decorative sheet is attached on a hard layer of the board.
２重量％以上の割合でサイズ剤が含有されてなることを
特徴とする化粧板。2. A decorative board, characterized in that a wood fiber forming the hard layers of the front and back layers contains a sizing agent in a proportion of 2% by weight or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992037906U JP2596358Y2 (en) | 1992-04-21 | 1992-04-21 | Decorative board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992037906U JP2596358Y2 (en) | 1992-04-21 | 1992-04-21 | Decorative board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0585627U true JPH0585627U (en) | 1993-11-19 |
| JP2596358Y2 JP2596358Y2 (en) | 1999-06-14 |
Family
ID=12510589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992037906U Expired - Fee Related JP2596358Y2 (en) | 1992-04-21 | 1992-04-21 | Decorative board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2596358Y2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06238820A (en) * | 1993-02-12 | 1994-08-30 | Tomiyasu Honda | Decorative panel |
| JPH0752319A (en) * | 1993-08-11 | 1995-02-28 | Tomiyasu Honda | Decorative sheet |
| JPH0752322A (en) * | 1993-08-11 | 1995-02-28 | Tomiyasu Honda | Decorative board |
| JP2012214981A (en) * | 2011-03-31 | 2012-11-08 | Dainippon Printing Co Ltd | Decorative material for flooring |
| JP2013072206A (en) * | 2011-09-27 | 2013-04-22 | Dainippon Printing Co Ltd | Decorative material for floor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5450074U (en) * | 1977-09-16 | 1979-04-06 |
-
1992
- 1992-04-21 JP JP1992037906U patent/JP2596358Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5450074U (en) * | 1977-09-16 | 1979-04-06 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06238820A (en) * | 1993-02-12 | 1994-08-30 | Tomiyasu Honda | Decorative panel |
| JPH0752319A (en) * | 1993-08-11 | 1995-02-28 | Tomiyasu Honda | Decorative sheet |
| JPH0752322A (en) * | 1993-08-11 | 1995-02-28 | Tomiyasu Honda | Decorative board |
| JP2012214981A (en) * | 2011-03-31 | 2012-11-08 | Dainippon Printing Co Ltd | Decorative material for flooring |
| JP2013072206A (en) * | 2011-09-27 | 2013-04-22 | Dainippon Printing Co Ltd | Decorative material for floor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2596358Y2 (en) | 1999-06-14 |
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