JP2549259Y2 - Laminated board - Google Patents
Laminated boardInfo
- Publication number
- JP2549259Y2 JP2549259Y2 JP1991110920U JP11092091U JP2549259Y2 JP 2549259 Y2 JP2549259 Y2 JP 2549259Y2 JP 1991110920 U JP1991110920 U JP 1991110920U JP 11092091 U JP11092091 U JP 11092091U JP 2549259 Y2 JP2549259 Y2 JP 2549259Y2
- Authority
- JP
- Japan
- Prior art keywords
- wood
- layer
- veneer
- wood fiber
- fiber
- 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 - Fee Related
Links
- 229920002522 Wood fibre Polymers 0.000 claims description 67
- 239000002025 wood fiber Substances 0.000 claims description 67
- 239000002023 wood Substances 0.000 claims description 46
- 239000000835 fiber Substances 0.000 claims description 18
- 239000011122 softwood Substances 0.000 claims description 12
- 238000010030 laminating Methods 0.000 claims description 4
- 238000011282 treatment Methods 0.000 description 20
- 238000005520 cutting process Methods 0.000 description 14
- 238000005452 bending Methods 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000011120 plywood Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000003795 desorption Methods 0.000 description 5
- 239000011121 hardwood Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 2
- 241000218645 Cedrus Species 0.000 description 2
- 241000218691 Cupressaceae Species 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 2
- 230000021736 acetylation Effects 0.000 description 2
- 238000006640 acetylation reaction Methods 0.000 description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 2
- 235000019289 ammonium phosphates Nutrition 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- 230000032050 esterification Effects 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- 150000002366 halogen compounds Chemical class 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- -1 ammonium phosphate Chemical compound 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011088 parchment paper Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、構造材料を始め建築の
表装、内装および家具等に使用される積層板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated board used for structural materials, surface covering, interior decoration, furniture and the like.
【０００２】[0002]
【従来技術】積層板は、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．）などが知ら
れており、挽材では得られない大きな寸法の板を多量に
安定して供給することができ、しかも寸法安定性にも優
れているなど、現在の建築材料の一材料としてなくては
ならないものである。2. Description of the Related Art Laminates include plywood in which veneers are laminated and bonded with their fiber directions orthogonal to each other, and parallel plywood (LVL) in which the fiber directions of veneers are laminated and bonded in the same direction. It is indispensable as one of the current building materials, as it can stably supply large-sized boards that cannot be obtained with sawn timber in a large amount and has excellent dimensional stability. It is.
【０００３】[0003]
【考案が解決しようとする課題】しかし、この合板は、
天然木材を薄く剥ぎ取った単板を積層接着し製造するた
め、天然資源の枯渇問題が世界的に大きく取り上げら
れ、原材料である原木を伐採することが困難になると共
に、原木の質が低下することによって、単板に使用する
良質の単板を多量に得ることが難しくなり、品質の良い
合板を多量に市場に供給することが困難となる。この問
題は今後ますます深刻化することが予測され、合板に代
わる代替え品の提供が熱望されている。[Problem to be solved by the invention] However, this plywood
Due to the lamination and production of veneers made of natural wood stripped thinly, the issue of depletion of natural resources has become a major issue around the world, making it difficult to cut down the raw wood as a raw material and deteriorating the quality of the raw wood This makes it difficult to obtain a large amount of high quality veneer used for veneer, and it becomes difficult to supply a large amount of high quality plywood to the market. This problem is expected to become more serious in the future, and there is an eager desire to provide an alternative to plywood.
【０００４】[0004]
【課題を解決するための手段】本考案は、合板の代替え
品として使用できる新規な積層板を提供することを目的
として鋭意工夫の結果完成されたものである。DISCLOSURE OF THE INVENTION The present invention has been accomplished as a result of a devising for the purpose of providing a novel laminate which can be used as a substitute for plywood.
【０００５】すなわち本考案は、図１に示すような構成
であり、表面側より表層木質繊維層１、中層木質単板層
３、中層木質繊維層２、裏層木質単板層４の順で積層一
体化されてなる積層板であり、表層木質繊維層１および
中層木質繊維層２が針葉樹材を原料とする木質繊維から
なるものである。That is, the present invention has a structure as shown in FIG. 1, in which a surface wood fiber layer 1, a middle wood veneer layer 3, a middle wood fiber layer 2, and a back wood veneer layer 4 are arranged in this order from the surface side. It is a laminated board obtained by laminating and integrating, wherein the surface wood fiber layer 1 and the middle wood fiber layer 2 are made of wood fibers made from softwood.
【０００６】積層板の中層木質単板層３および裏層木質
単板層４に用いる木質単板としては、針葉樹材、広葉樹
材の原木をロータリーレース、スライサーなど切削装置
を用いて切削して得られる針葉樹単板および広葉樹単板
を用いることができる。The wood veneer used for the middle wood veneer layer 3 and the back wood veneer layer 4 of the laminated board is obtained by cutting a softwood or hardwood log with a cutting device such as a rotary lace or a slicer. Softwood veneers and hardwood veneers can be used.
【０００７】針葉樹単板、広葉樹単板は板厚が０．２ｍ
ｍ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以下であると、積層板としての
機械的強度の向上に付与しない。０．５ｍｍ以上のもの
であれば強度の向上に付与する。また、５．５ｍｍ以上
になると単板の水分の吸放湿に伴う収縮膨張が積層板と
しての寸法安定化に影響を及ぼすものとなる。[0007] Softwood veneers and hardwood veneers have a thickness of 0.2 m.
m or more, preferably 0.5 to 5.5 mm. When the plate thickness is 0.2 mm or less, it does not contribute to improvement in mechanical strength as a laminate. If it is 0.5 mm or more, it is provided for improvement of strength. When the thickness is 5.5 mm or more, the shrinkage and expansion of the veneer due to the absorption and desorption of moisture affects the dimensional stability of the laminate.
【０００８】中層木質単板層３と裏層木質単板層４の繊
維方向は互いに平行あるいは直交するように配すること
ができる。The fiber directions of the middle wood veneer layer 3 and the back wood veneer layer 4 can be arranged so as to be parallel or perpendicular to each other.
【０００９】しかし一般に木質単板は、吸放湿すること
により単板の繊維方向に平行方向の収縮膨張に比べ、繊
維方向に垂直方向の収縮膨張が５から２０倍と大きく、
繊維方向に対し平行方向と垂直方向との変化率が大きく
異なる。However, in general, a wood veneer has a contraction and expansion in the direction perpendicular to the fiber direction which is 5 to 20 times larger than the contraction and expansion in the direction parallel to the fiber direction of the veneer by absorbing and releasing moisture.
The rate of change between the direction parallel to the fiber and the direction perpendicular to the fiber direction is significantly different.
【００１０】このため、中層木質単板層３と裏層木質単
板層４の繊維方向を直交するように配置することによ
り、吸放湿による単板の繊維方向に対し垂直方向への収
縮膨張の動きをお互いに抑制する効果が生じ、積層板の
長さ方向と幅方向の収縮膨張が均等となり、積層板とし
ての寸法安定性に優れたものとなる。[0010] Therefore, by arranging the middle wood veneer layer 3 and the back wood veneer layer 4 so that the fiber directions are orthogonal to each other, the shrinkage and expansion in the direction perpendicular to the fiber direction of the veneer due to moisture absorption and desorption. And the shrinkage and expansion in the length direction and the width direction of the laminate become uniform, and the laminate has excellent dimensional stability.
【００１１】さらに、裏層木質単板層４の繊維方向が、
積層板の長さ方向と平行となるように配することによ
り、機械的強度の面において、木質単板は繊維方向に平
行方向に曲げ強度および引っ張り強度が強いという性質
を有するため、本考案の長さ方向に曲げ荷重が掛かった
際に、裏面側において生ずる引っ張り負荷に対する耐久
性が向上し、積層板としての長さ方向の曲げ強さに優れ
た特性を有するものとなる。Further, the fiber direction of the backing wood veneer layer 4 is
By arranging the laminate in parallel to the length direction, in terms of mechanical strength, the wood veneer has the property that the bending strength and the tensile strength are strong in the direction parallel to the fiber direction. When a bending load is applied in the length direction, the durability against a tensile load generated on the back surface side is improved, and the laminate has excellent properties in bending strength in the length direction as a laminated plate.
【００１２】このため、一般に長さ方向端部を下地構造
材により支持するよう施工する床材のように、長さ方向
の曲げ強度が要求される基板として用いるのに非常に適
した板材となる。[0012] For this reason, a plate material very suitable for use as a substrate requiring a bending strength in the length direction, such as a floor material generally constructed so as to support the end portion in the length direction with an underlying structural material. .
【００１３】また、中層木質単板層３および裏層木質単
板層４に用いる木質単板として、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）処理または、ＷＰＣ化
処理（樹脂含浸）等の処理を施し寸法安定性および機械
的性質の向上を図ったものを用いることにより、積層板
の曲げ強度、寸法安定性はさらに優れたものが得られ
る。The wood veneer used for the middle wood veneer layer 3 and the back wood veneer layer 4 is a phenol resin treatment.
Acetylation treatment, esterification treatment, formalization treatment, P
By using EG (polyethylene glycol) treatment or WPC treatment (resin impregnation) or other treatment to improve dimensional stability and mechanical properties, the bending strength and dimensional stability of the laminated plate are further improved. Is obtained.
【００１４】さらに、木質単板としてリン酸アンモニウ
ム、リン窒素化合物、ハロゲン化合物、スルファミン
酸、ホウ酸などの難燃化薬剤による処理を施した単板を
用いることにより防火機能をも有する積層板が得られ
る。Further, a laminated board having a fire protection function can be obtained by using a veneer treated with a flame retardant such as ammonium phosphate, a phosphorus nitrogen compound, a halogen compound, sulfamic acid, boric acid or the like as a wooden veneer. can get.
【００１５】これらの処理は、防火薬剤に単板を浸漬す
る方法、薬剤を塗布する方法あるいは加圧、減圧下で薬
剤を注入することにより行なわれる。These treatments are carried out by immersing the veneer in a fire retardant, by applying the agent, or by injecting the agent under pressure or reduced pressure.
【００１６】また積層板の表層木質繊維層１および中層
木質繊維層２に用いる木質繊維としては、松、杉、桧等
の針葉樹材の原木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針葉樹材を原料とする木質繊
誰を圧締成型した比重０．４以上好ましくは０．５以上
の木質繊維層で、単独ではハードボード、ＭＤＦ等とし
て知られているものである。The wood fibers used for the surface wood fiber layer 1 and the middle wood fiber layer 2 of the laminated board are obtained by cutting wood chips obtained by cutting raw wood or waste wood of softwood such as pine, cedar, cypress and the like by a conventional method. A wood fiber layer obtained by press-molding a wood fiber obtained from softwood as a raw material and having a specific gravity of 0.4 or more, preferably 0.5 or more, which is known alone as a hardboard or MDF.
【００１７】また、この木質繊維層には、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もできる。これら木質
繊維層は、単独で含水率１％当たりの寸法変化率が長さ
方向と幅方向が均等で０．０３〜０．０４％と優れた安
定性を有するものであるため、前記中層木質単板層３と
裏層木質単板層４をその繊維方向が直交するように配す
ることによる木質単板層同志の収縮膨張の抑制作用に、
木質繊維層の安定性が加えられることにより、さらに寸
法安定性に優れた性質を有する積層板となり、積層板と
しての吸放湿による寸法変化率が含水率１％当たり０．
０２〜０．０３％という優れた寸法安定性を有する合板
の性能に匹敵するものである。Further, the wood fiber layer may be mixed with waste materials such as sander dust, saw dust, chip dust and the like generated during the manufacture of wood fiber board. Since these wood fiber layers alone have excellent stability with a dimensional change rate per 1% of water content in the length direction and the width direction equal to 0.03 to 0.04%, the middle-layer wood fiber layer is used. By arranging the veneer layer 3 and the back layer veneer veneer layer 4 so that their fiber directions are perpendicular to each other,
By adding the stability of the wood fiber layer, a laminated board having further excellent dimensional stability is obtained, and the dimensional change of the laminated board due to moisture absorption / desorption is 0.1% per 1% of water content.
It is comparable to the performance of plywood having excellent dimensional stability of 02-0.03%.
【００１８】また、機械的強度の面において、木質繊維
層は木質単板よりも比重が高く圧縮および剪断強度が優
れている。このため、表面への鉄球の落下試験、ハイヒ
ールおよびキャスター等による局所的に荷重が加わって
も凹みにくい。In terms of mechanical strength, the wood fiber layer has a higher specific gravity than wood veneer and has excellent compression and shear strength. For this reason, even if a load is locally applied by a drop test of an iron ball to a surface, a high heel, a caster, or the like, the iron ball is not easily dented.
【００１９】また、針葉樹材を原料とする木質繊維は、
繊維が細く長いため繊維間の絡み合いが強く同一の熱圧
条件で圧締した場合は、広葉樹材を原料とする木質繊維
を用いたものに比べ、比重が高く、圧縮強度、曲げ強度
共に優れた性質を有する。Wood fibers made from coniferous wood are
When the fibers are thin and long and the entanglement between the fibers is strong and pressed under the same heat and pressure conditions, the specific gravity is higher and the compressive strength and flexural strength are superior to those using wood fibers made from hardwood. Has properties.
【００２０】したがって、本願考案の積層板に曲げ荷重
が掛かった際に、表面側において平面方向の圧縮の付加
が作用するが、針葉樹材を原料とする木質繊維からなる
表層木質繊維層１が優れた平面方向の耐圧縮性能を示
し、積層板としての長さ方向および幅方向における曲げ
強さに優れた特性を有するものとなる。Therefore, when a bending load is applied to the laminated board of the present invention, a compression in the planar direction acts on the surface side, but the surface wood fiber layer 1 made of wood fiber made of softwood is excellent. It exhibits a compression resistance in the plane direction and has excellent bending strength in the length direction and the width direction as a laminate.
【００２１】さらに、平滑性および加工性にも優れた木
質繊維層が表面に配されているため、化粧シートの貼着
あるいは塗装処理等を施しても優れた仕上がりが得ら
れ、また、任意方向への切削加工が容易に施すことがで
きる。Further, since a wood fiber layer having excellent smoothness and workability is disposed on the surface, an excellent finish can be obtained even when a decorative sheet is attached or subjected to a coating treatment. Can be easily cut.
【００２２】また、本考案の木質繊維層は針葉樹材を原
料とする木質繊維からなり、広葉樹材を原料とする木質
繊維に比べ繊維が細く長く白色系であるため、表層木質
繊維層１は、表面が平滑で白色系となり、その後の表面
化粧として塗装による表面化粧処理および薄い突板、化
粧紙などの接着化粧処理を施すのに非常に適したものと
なる。Further, the wood fiber layer of the present invention is made of wood fiber made of softwood, and is thinner and longer than wood fiber made of hardwood. The surface becomes smooth and white, which makes it very suitable for performing a surface makeup treatment by painting and an adhesive makeup treatment of thin veneer, decorative paper and the like as the subsequent surface makeup.
【００２３】また、表層木質繊維層１および中層木質繊
維層２に用いる木質繊維層として、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（ポリエチレングリコール）処理または、Ｗ
ＰＣ化処理（樹脂含浸）等の処理を施し寸法安定性およ
び機械的性質の向上を施したものを用いることにより、
積層板の曲げ強度、寸法安定性はさらに優れたものが得
られる。The wood fiber layers used for the surface wood fiber layer 1 and the middle wood fiber layer 2 may be phenol resin treatment, acetylation treatment, esterification treatment, formalization treatment, PEG (polyethylene glycol) treatment or W
By using those that have been subjected to processing such as PC processing (resin impregnation) to improve dimensional stability and mechanical properties,
Bending strength and dimensional stability of the laminate are further excellent.
【００２４】これらの処理は、例えば、松、杉、檜等の
針葉樹材をチップにした後、常法に従い解繊し、乾燥し
た木質繊維の段階で常法により上記の処理を行ない、得
られた木質繊維を用いて木質繊維層を製造することによ
ってなされる。These treatments are obtained, for example, by cutting softwood materials such as pine, cedar, cypress and the like into chips, defibrating according to a conventional method, and performing the above-described treatment by a conventional method at the stage of dried wood fibers. It is performed by manufacturing a wood fiber layer using the wood fiber.
【００２５】さらに、木質繊維層としてリン酸アンモニ
ウム、リン窒素化合物、ハロゲン化合物、スルファミン
酸、ホウ酸などの難燃化薬剤による処理を施した木質繊
維を用いることにより防火機能をも有する積層板が得ら
れる。これらの処理は、前記寸法安定性および機械的性
質向上の処理と同様に行なわれる。Further, by using a wood fiber treated with a flame retardant such as ammonium phosphate, phosphorus nitrogen compound, halogen compound, sulfamic acid, boric acid or the like as the wood fiber layer, a laminated board having a fire protection function can be obtained. can get. These treatments are performed in the same manner as the treatment for improving the dimensional stability and mechanical properties.
【００２６】本考案の積層板は、例えば、予め製造した
木質繊維板および木質単板を用い、表面側より表層木質
繊維層１、中層木質単板層３、中層木質繊維層２、裏層
木質単板層４の順で接着剤を介して積層し、常法に従い
プレスすることにより得られる。The laminated board of the present invention uses, for example, a wood fiber board and a wood veneer that have been manufactured in advance, and the surface wood fiber layer 1, the middle wood veneer layer 3, the middle wood fiber layer 2, and the back wood fiber from the front side. It is obtained by laminating in the order of the veneer layer 4 with an adhesive and pressing according to a conventional method.
【００２７】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、さらにその上に表裏面に接着剤を塗布
した木質単板を載せ、最後に木質繊維マットを載せた
後、熱圧プレスすることにより積層板を製造することが
できる。Further, in a process of manufacturing a wood fiber board, a wood fiber mat obtained by cutting a wood fiber having an adhesive applied and dried on a screen belt by a forming device on a screen belt to a predetermined size and temporarily pressing the wood fiber mat. The wood fiber mat was placed on a wood veneer coated with an adhesive on the front side, and the wood veneer coated with the adhesive was placed on the front and back surfaces, and finally the wood fiber mat was placed. Thereafter, the laminate can be manufactured by hot pressing.
【００２８】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もでき、熱圧締も一回（ワンシ
ョット）で積層板ができるなど工業的に有利な方法であ
る。This method is industrially advantageous in that a conventional wood fiberboard production line can be used as it is, and hot pressing can be performed in a single shot (one shot).
【００２９】また、得られた積層板の木質繊維層と木質
単板との間の接着力も非常に優れたものが得られる。In addition, an extremely excellent adhesive force is obtained between the obtained wood fiber layer of the laminated board and the wood veneer.
【００３０】他に、スクリーンベルト上に木質単板を乗
せフォーミング装置に挿入し、該木質単板上に木質繊維
を堆積し次に木質繊維上に木質単板をのせた後、さらに
フォーミング装置にて木質繊維を堆積した後、一定間隔
に切断し、仮圧締し熱圧プレスするか、切断することな
く仮圧締し連続して熱圧締した後切断することにより積
層板にするか、あるいは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木質繊維上に木質
単板をのせ、次に木質単板上にフォーミング装置にて木
質繊維を堆積し、更に木質繊維上に木質単板をのせた後
一定幅に切断し仮圧締し熱圧プレスするか、切断するこ
となく仮圧締し連続プレスした後切断することにより積
層板とする方法が考えられる。Alternatively, a wooden veneer is placed on a screen belt, inserted into a forming device, wood fibers are deposited on the wooden veneer, and then a wooden veneer is placed on the wood fibers, and then further applied to a forming device. After depositing wood fibers, cut at regular intervals and temporarily press and hot press, or temporarily press without cutting and continuously hot press and cut after laminating, Alternatively, after the wood fiber is deposited on the screen belt by the forming device, the wood veneer is placed on the wood fiber, then the wood fiber is deposited on the wood veneer by the forming device, and the wood veneer is further placed on the wood fiber. A method of forming a laminated board by cutting the sheet into a fixed width and temporarily press-fitting it and then hot-pressing the sheet, or cutting the sheet by temporarily pressing it without cutting it and then cutting it after cutting.
【００３１】このような、木質繊維マットを用いた方
法、あるいは木質単板の上に木質繊維を堆積した後に、
一括プレスする方法において、中層木質単板層の厚さを
２ｍｍ厚以上の単板で構成することにより、プレスした
際に中層木質単板層が波打状に変形することがなく好ま
しい。After such a method using a wood fiber mat, or after wood fibers are deposited on a wood veneer,
In the batch pressing method, it is preferable that the middle wooden veneer layer is made of a veneer having a thickness of 2 mm or more, so that the middle wooden veneer layer does not deform into a wavy shape when pressed.
【００３２】また、図２に示すように本考案の積層板の
表面に必要により化粧シート５を接着する。接着する化
粧シート５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、およ
び不織布、紙、合成樹脂シートを裏打ちした突板シー
ト、または、２０−４０ｇ／ｍ２の化粧紙、３２−５０
０ｇ／ｍ２の不織布、５０ｇ／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、あるいは、
化粧シート５接着後、上塗り工程を設けることもでき
る。Further, as shown in FIG. 2, a decorative sheet 5 is bonded to the surface of the laminate of the present invention, if necessary. As the decorative sheet 5 to be bonded, for example, a natural veneer, an artificial veneer obtained by cutting natural wood having a thickness of about 0.2 to 3 mm, a nonwoven fabric, paper, a veneer sheet lined with a synthetic resin sheet, or 20 to 40 g / M 2 of decorative paper, 32-50
0 g / m 2 non-woven fabric, 50 g / m 2 parchment paper, etc., patterned or printed with a single color, or
After adhesion of the decorative sheet 5, an overcoating step may be provided.
【００３３】これら化粧シートの接着は、熱可塑性接着
剤例えば酢酸ビニル樹脂等に耐水性向上のために熱硬化
性樹脂または尿素粉末等を混入したものを用いることが
できる。For the adhesion of these decorative sheets, it is possible to use a thermoplastic adhesive such as a vinyl acetate resin mixed with a thermosetting resin or urea powder for improving the water resistance.
【００３４】また、本考案の積層板は、突板単板を貼着
した場合でも、積層板表面の表層木質繊維層１の吸放湿
による収縮膨張が小さいため突板単板に割れが生ずるこ
とがない。また、針葉樹材を原料とする木質繊維が白色
系であるため、その上に施す化粧シートとして、任意の
色調のものを選択することができる。In the laminated board of the present invention, even when a veneer veneer is adhered, cracks may occur in the veneer veneer due to small shrinkage and expansion of the surface wood fiber layer 1 on the surface of the laminated board due to moisture absorption and desorption. Absent. In addition, since the wood fiber made of softwood is a white material, any color sheet can be selected as a decorative sheet applied thereon.
【００３５】[0035]
【考案の効果】本考案による積層板は、従来の合板の単
板の一部を木質繊維層におきかえ、これら木質繊維層は
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。[Effect of the Invention] The laminated board according to the present invention is obtained by replacing a part of the conventional veneer veneer with a wood fiber layer, and these wood fiber layers are obtained by crushing or fibrillating a raw wood having a defect that cannot be used as a veneer. Is obtained by using
Resources can be used effectively and help prevent the destruction of nature.
【００３６】また、中層木質単板層３と裏層木質単板層
２を繊維方向が直交するように配することにより幅方向
および長さ方向の寸法安定性に優れ、機械的強度も長さ
方向および幅方向共に曲げ強度に優れ、これら単板層の
間および表裏面に木質繊維層が配されることによりさら
に寸法安定性の優れたものとなる。Further, by arranging the middle wood veneer layer 3 and the back wood veneer layer 2 so that the fiber directions are orthogonal to each other, the dimensional stability in the width direction and the length direction is excellent, and the mechanical strength is also long. The bending strength is excellent in both the direction and the width direction, and the wood fiber layers are arranged between these veneer layers and on the front and back surfaces, whereby the dimensional stability is further improved.
【００３７】本考案の積層板表面に曲げ荷重がかかった
際に、この曲げ荷重は、表面側において圧縮付加、裏面
側において引っ張り付加となって作用するが、針葉樹材
を原料とする木質繊維からなる表層木質繊維層１の平面
方向の圧縮強度が優れ、裏面側の裏層木質単板層４が引
っ張り強度が優れるため、総合的に曲げ強度が優れた積
層板となる。また、裏層木質単板層４の繊維方向を積層
板の長さ方向に平行とすることにより、特に長さ方向の
曲げ強度が優れたものとなる。When a bending load is applied to the surface of the laminated board of the present invention, the bending load acts as compression on the front side and tension on the back side. Since the surface wood fiber layer 1 has excellent compressive strength in the plane direction and the back wood veneer veneer layer 4 on the back side has excellent tensile strength, a laminated board having overall excellent bending strength is obtained. Further, by making the fiber direction of the backing wood veneer layer 4 parallel to the length direction of the laminated board, the bending strength in the length direction is particularly excellent.
【００３８】また、積層板の表面は針葉樹材を原料とす
る木質繊維層により構成されるため、厚さ方向の圧縮強
度が強く、平滑性にも優れた仕上がりが得られ、また、
任意方向への切削加工が容易に施すことができる。Further, since the surface of the laminated board is composed of a wood fiber layer made of softwood, raw material having high compressive strength in the thickness direction and excellent in smoothness can be obtained.
Cutting in any direction can be easily performed.
【００３９】さらに、表層木質繊維層１は吸放湿による
収縮膨張が小さいため、表面に突板シートを貼着しても
割れが生じにくいなど優れた特性を有するものである。Further, since the surface wood fiber layer 1 has a small shrinkage and expansion due to moisture absorption and desorption, it has excellent characteristics such that cracks hardly occur even when a veneer sheet is adhered to the surface.
【図１】 本考案積層板の断面図、FIG. 1 is a cross-sectional view of a laminate of the present invention;
【図２】本考案積層板の表面に化粧シートを接着したも
のの断面図、FIG. 2 is a cross-sectional view of a laminate sheet having a decorative sheet adhered to the surface of the present invention;
１：表層木質繊維層、２：中層木質繊維層、３：中層木
質単板層、４：裏層木質単板層、５：化粧シート。1: surface wood fiber layer, 2: middle wood fiber layer, 3: middle wood veneer layer, 4: back wood veneer layer, 5: decorative sheet.
Claims (3)
単板層３、中層木質繊維層２、裏層木質単板層４の順で
積層一体化されてなる積層板の、表層木質繊維層１およ
び中層木質繊維層２が針葉樹材を原料とする木質繊維か
らなることを特徴とする積層板。1. A surface wood fiber of a laminate obtained by laminating and integrating a surface wood fiber layer 1, a middle wood veneer layer 3, a middle wood fiber layer 2, and a back wood veneer layer 4 in this order from the front side. A laminate, wherein the layer 1 and the middle-layer wood fiber layer 2 are made of wood fibers made of softwood.
繊維方向が直交するように配されてなる請求項１記載の
積層板。2. The laminated board according to claim 1, wherein the fiber directions of the middle wood veneer layer 3 and the back wood veneer layer 4 are orthogonal to each other.
長手方向と平行方向に配されてなる請求項１記載の積層
板。3. The laminated board according to claim 1, wherein the fiber direction of the backing wood veneer layer 4 is arranged in a direction parallel to the longitudinal direction of the laminated board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991110920U JP2549259Y2 (en) | 1991-11-20 | 1991-11-20 | Laminated board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991110920U JP2549259Y2 (en) | 1991-11-20 | 1991-11-20 | Laminated board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0612011U JPH0612011U (en) | 1994-02-15 |
| JP2549259Y2 true JP2549259Y2 (en) | 1997-09-30 |
Family
ID=14547983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991110920U Expired - Fee Related JP2549259Y2 (en) | 1991-11-20 | 1991-11-20 | Laminated board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2549259Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5110315Y1 (en) * | 1970-04-24 | 1976-03-18 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60129102A (en) * | 1983-12-15 | 1985-07-10 | Fujirebio Inc | Preparation of lyophilized product |
-
1991
- 1991-11-20 JP JP1991110920U patent/JP2549259Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0612011U (en) | 1994-02-15 |
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