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JP2012171302A - Wood fiber amassed panel and flooring - Google Patents

Wood fiber amassed panel and flooring Download PDF

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JP2012171302A
JP2012171302A JP2011037785A JP2011037785A JP2012171302A JP 2012171302 A JP2012171302 A JP 2012171302A JP 2011037785 A JP2011037785 A JP 2011037785A JP 2011037785 A JP2011037785 A JP 2011037785A JP 2012171302 A JP2012171302 A JP 2012171302A
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wood fiber
wood
resin
binder
integrated board
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Akiyoshi Tsukada
昭義 塚田
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Toyo Tex Co Ltd
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Toyo Tex Co Ltd
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  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Panels For Use In Building Construction (AREA)
  • Floor Finish (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a wood fiber amassed panel which can be manufactured by using a broad-leaved tree or a needle-leaved tree suitable for reforestation, high in bending rigidity, and in particular, excellent in the protection of a beautiful surface and surface smoothness.SOLUTION: The amassed panel is formed by amassing wood fibers 1a and integrally molding the amassed wood fibers with a binder 1b. The amassed panel has density distribution ranging from 0.75-1.20 g/cm, a layer with a density of 0.80 g/cmor more existing within 1.5 mm from a surface layer, and a thickness of 3.5 mm or less. The binder 1b is formed of a polyisocyanate resin or a melamine-urea resin. The polyisocyanate resin is polymeric MDI. A core layer is a laminate body formed by laminating woody boards, and the wood fiber amassed panel 1 described in any of claims 1-7 is laminated on at least one of surface layers of the laminate body.

Description

本発明は、木質繊維集積板および床材に関する。   The present invention relates to a wood fiber integrated board and a flooring.

日本国内で用いられている木質床材に関しては、図4に示すように12mm厚さの合板101に0.1〜0.3mm厚さの突板化粧単板102を積層し、塗装103してなる構成が主流を占めている(特許文献1,2参照)。塗装103はウレタン樹脂を主材とするものであるが、わざわざ塗装工程を設けなければならないので、製造コストが高くついている。   Regarding the wooden flooring used in Japan, as shown in FIG. 4, a structure in which a veneer veneer 102 having a thickness of 0.1 to 0.3 mm is laminated on a plywood 101 having a thickness of 12 mm and a coating 103 is used is mainstream. (See Patent Documents 1 and 2). Although the coating 103 is mainly made of urethane resin, the manufacturing cost is high because a painting process must be provided.

ところで、上記従来例の木質床材では、合板101に熱帯雨林で生育したラワンを主材としているので、つぎの欠点がある。
イ)過剰な森林伐採で熱帯雨林保護が急務の現実からラワンを主材とする合板が使用できない。
ロ)合板の表面は、干割れ、節、導管の凹みなどがあり、補修のためのパテ埋めなどの表面平滑化処理をした0.1〜0.3mm厚さの突板化粧単板を接着積層し、さらに表面の美麗保護のため、工程はふえるが前記塗装103が必要とされる。
By the way, the above-mentioned conventional wood floor material has the following drawbacks because it mainly uses lauan grown on a plywood 101 in a rainforest.
B) Due to the urgent need of rainforest protection due to excessive deforestation, plywood made mainly of Lauan cannot be used.
B) The surface of the plywood has dry cracks, joints, dents in the conduit, etc., and a veneer veneer veneer with a thickness of 0.1 to 0.3mm that has been subjected to surface smoothing treatment such as putty filling for repairing is laminated. In order to protect the beauty of the surface, the coating 103 is required although the process is improved.

特開2002−276140JP2002-276140 特開2001−254503JP2001-254503

本発明は上記事情に鑑み、植林再生可能な広葉樹・針葉樹を使用でき、曲げ剛性が高く、塗装をしなくても美麗保護および表面平滑性に優れた木質繊維集積板を提供することを目的とする。また、充分な曲げたわみ基準を満足する床材を提供することを目的とする。   In view of the above circumstances, the present invention has an object to provide a wood fiber integrated board that can use broad-leaved trees and conifers that can be planted and regenerated, has high bending rigidity, and is excellent in beautiful protection and surface smoothness without being painted. To do. It is another object of the present invention to provide a floor material that satisfies a sufficient bending deflection standard.

第1発明の木質繊維集積板は、木質繊維を集積し、バインダーを用いて一体化成形された集積板であって、密度分布が0.75〜1.20g/cmの範囲であって、表層1.5mm以内において密度が0.80g cm以上の層が存在し、厚さが3.5mm以下であることを特徴とする。
第2発明の木質繊維集積板は、第1発明において、前記バインダーが、ポリイソシアネート樹脂またはメラミンユリア樹脂であることを特徴とする。
第3発明の木質繊維集積板は、第2発明において、前記ポリイソシアネート樹脂がポリメリックMDIであることを特徴とする。
第4発明の木質繊維集積板は、第2発明において、前記木質繊維は、その含水率が15重量%以下の木質繊維であって、ポリイソシアネート樹脂を用いたバインダー添加量が12−4重量%であることを特徴とする。
第5発明の木質繊維集積板は、第2発明において、前記木質繊維は、その含水率が15重量%以下の木質繊維であって、メラミンユリア樹脂を用いたバインダー添加量が10−35重量%であることを特徴とする。
第6発明の木質繊維集積板は、第1、第2、第3、第4または第5発明において、前記木質繊維は、その長さが0.1mm〜10.0mmで、直径が1μm〜300μmであることを特徴とする。
第7発明の木質繊維集積板は、第1、第2、第3、第4、第5または第6発明において、メラミン樹脂、メラミンユリア樹脂またはジアリルフタレート樹脂からなる美麗表面保護および平滑性向上樹脂を含浸した化粧シートを表層に積層したことを特徴とする。
第8発明の床材は、芯層が木質ボードを積層した積層体であり、前記積層体の表層の少なくとも一方に、請求項1〜7のいずれかに記載の木質繊維集積板を表層のうちの少なくとも一方に積層したことを特徴とする。
第9発明の床材は、第8発明において、前記木質ボードの積層体が、合板、パーティクルボード、MDFまたはOSBであることを特徴とする。
The wood fiber integrated board of the first invention is an integrated board in which wood fibers are integrated and integrally molded using a binder, and the density distribution is in the range of 0.75 to 1.20 g / cm 3 and the surface layer is 1.5 mm. The layer has a density of 0.80 g cm 3 or more and a thickness of 3.5 mm or less.
According to a second aspect of the invention, in the first aspect, the binder is a polyisocyanate resin or a melamine urea resin.
According to a third aspect of the present invention, in the second aspect, the polyisocyanate resin is polymeric MDI.
According to a fourth aspect of the present invention, in the second aspect, the wood fiber is a wood fiber having a moisture content of 15% by weight or less, and a binder addition amount using a polyisocyanate resin is 12-4% by weight. It is characterized by being.
According to a fifth aspect of the invention, in the second aspect, the wood fiber is a wood fiber having a moisture content of 15% by weight or less, and a binder addition amount using a melamine urea resin is 10-35% by weight. It is characterized by being.
According to a sixth aspect of the present invention, in the first, second, third, fourth, or fifth aspect, the wood fiber has a length of 0.1 mm to 10.0 mm and a diameter of 1 μm to 300 μm. It is characterized by that.
The wood fiber integrated board according to the seventh aspect of the invention is the beautiful surface protection and smoothness improving resin comprising the melamine resin, melamine urea resin or diallyl phthalate resin in the first, second, third, fourth, fifth or sixth invention. A decorative sheet impregnated with is laminated on the surface layer.
The flooring material according to an eighth aspect of the present invention is a laminate in which the core layer is a laminate of wood boards, and the wood fiber integrated board according to any one of claims 1 to 7 is disposed on at least one of the surface layers of the laminate. It is characterized by being laminated on at least one of the above.
According to a ninth aspect of the present invention, in the eighth aspect, the laminate of the wooden boards is plywood, particle board, MDF, or OSB.

第1発明によれば、つぎの効果を奏する。
a)木質繊維を集積・一体化するのでチップ化できる植林再生可能な広葉樹・針葉樹を原料として使用でき、熱帯林産のラワン木材を使用した合板を使う必要がない。
b)全体の密度が0.75〜1.20g/cmであって、従来の木質繊維集積板よりも高密度で密度分布に工夫があるため、高い強度・剛性が得られる。
c)表層部の密度が0.80g/cm以上と高いので全体剛性が向上し表面平滑性も良好となり、補修工程を必要としない。
d)中層部も最低限の密度0.75g/cmを確保しており、厚さが3.5mm以下であると必要以上の重量増加も招くことはない。よって、床材に好適な強度を有する木質繊維集積板を提供できる。
第2発明によれば、バインダーとしてポリイソシアネートまたはメラミンユリア樹脂を用いているので、加圧成形時のプレス時間短縮及び成形品の耐水性向上できるという利点がある。
第3発明によれば、バインダーとしてポリメリックMDIを用いているので、加圧成形時のプレス時間短縮及び成形品の耐水性向上できるという利点がある。
第4発明によれば、含水率が15重量%以下であるので、熱プレスの条件設定によって目標とする密度分布(0.75〜1.20g/cm)が得られ、またポリイソシアネートバインダーの添加量が4〜12重量%であるので、充分な曲げ強度が得られ、経済的に生産できる。
第5発明によれば、含水率が15重量%以下であるので、熱プレスの条件設定によって目標とする密度分布(0.75〜1.20g/cm)が得られ、またメラミンユリア樹脂バインダーの添加量が12〜30重量%であるので、充分な曲げ強度が得られ、経済的に生産できる。
第6発明によれば、繊維長が0.1mm〜10.0mmであり直径が1μm〜300μmであると、優れた表面平滑性を得ながら充分な強度と剛性を確保することができる。
第7発明によれば、メラミン樹脂、メラミンユリア樹脂またはジアリルフタレート樹脂からなる美麗表面保護および平滑性向上樹脂を積層したことにより、木質繊維集積板の美麗表面保護および表面平滑性が非常に高くなる。
第8発明によれば、剛性および表面平滑性の高い木質繊維集積板を表層のうち少なくとも一方に積層し、芯層に木質ボードを積層しているので、木質ボード複合積層体としての密度が0.5〜0.80g/cmであり、曲げヤング係数が40〜85×102MPaとなる条件を満足することができ、床材に必要な剛性を保有することができる。
第9発明によれば、木質ボードの積層体が、合板、パーティクルボード、MDFまたはOSBであるので経済的に製造できる。
According to the first invention, the following effects are obtained.
a) Since wood fibers are integrated and integrated, afforestation that can be converted into chips can be used as a raw material, which can be regenerated broad-leaved trees and conifers, and there is no need to use plywood made from tropical forest lauan wood.
b) The total density is 0.75 to 1.20 g / cm 3 , and the density is higher than that of the conventional wood fiber integrated board, and the density distribution is devised, so that high strength and rigidity can be obtained.
c) Since the density of the surface layer portion is as high as 0.80 g / cm 3 or more, the overall rigidity is improved and the surface smoothness is improved, so that no repair process is required.
d) The middle layer also has a minimum density of 0.75 g / cm 3 , and if the thickness is 3.5 mm or less, the weight will not increase more than necessary. Therefore, the wood fiber integrated board which has the intensity | strength suitable for a flooring can be provided.
According to the second invention, since the polyisocyanate or melamine urea resin is used as the binder, there are advantages that the press time at the time of pressure molding can be shortened and the water resistance of the molded product can be improved.
According to the third invention, since the polymeric MDI is used as the binder, there are advantages that the press time at the time of pressure molding can be shortened and the water resistance of the molded product can be improved.
According to the fourth invention, since the water content is 15% by weight or less, a target density distribution (0.75 to 1.20 g / cm 3 ) can be obtained by setting the hot press conditions, and the amount of polyisocyanate binder added is Since it is 4 to 12% by weight, sufficient bending strength can be obtained, and the production can be economical.
According to the fifth invention, since the water content is 15% by weight or less, the target density distribution (0.75 to 1.20 g / cm 3 ) can be obtained by setting the hot press conditions, and the amount of the melamine urea resin binder added. Is 12 to 30% by weight, sufficient bending strength can be obtained and it can be produced economically.
According to the sixth invention, when the fiber length is 0.1 mm to 10.0 mm and the diameter is 1 μm to 300 μm, sufficient strength and rigidity can be ensured while obtaining excellent surface smoothness.
According to the seventh invention, the beautiful surface protection and surface smoothness of the wood fiber integrated board become very high by laminating the beautiful surface protection and smoothness improving resin made of melamine resin, melamine urea resin or diallyl phthalate resin. .
According to the eighth invention, since the wood fiber integrated board having high rigidity and surface smoothness is laminated on at least one of the surface layers, and the wood board is laminated on the core layer, the density as the wood board composite laminate is 0.5. It is ˜0.80 g / cm 3 , the condition that the bending Young's modulus is 40 to 85 × 10 2 MPa can be satisfied, and the rigidity necessary for the flooring can be retained.
According to the ninth invention, since the laminated body of the wood boards is plywood, particle board, MDF or OSB, it can be manufactured economically.

本発明の一実施形態に係る木質繊維集積板1の説明図である。It is explanatory drawing of the wood fiber integrated board 1 which concerns on one Embodiment of this invention. 本発明に係る木質繊維集積板1の密度分布図である。It is a density distribution figure of the wood fiber accumulation board 1 which concerns on this invention. 本発明の木質繊維集積板を積層した床材Aの断面図である。It is sectional drawing of the flooring A which laminated | stacked the wood fiber integration board of this invention. 従来の床材の断面図である。It is sectional drawing of the conventional flooring.

つぎに、本発明の実施形態を図面に基づき説明する。
本発明の木質繊維集積板は高密度に成形されている点が特徴であって、いわゆるHDF(High
Density Fiber board)と称されるものである。
図1は本発明の一実施形態に係る木質繊維集積板1の説明図である。同図に示すように、本発明の木質繊維集積板1は、木質繊維1aがバインダー1bにより成形によって一体化されている。すなわち、木質繊維1aがバインダー1bにより成形によって一体化されてなり、木質繊維集積板の密度分布が0.75〜1.20g/cmの範囲であって、表面部1.5mm以内において密度が0.80g/cm以上の層が存在する厚さ3.5mm以下の薄物木質繊維集積板である。
Next, an embodiment of the present invention will be described with reference to the drawings.
The wood fiber integrated board of the present invention is characterized in that it is formed with high density.
Density Fiber board).
FIG. 1 is an explanatory view of a wood fiber integrated board 1 according to an embodiment of the present invention. As shown in the figure, in the wood fiber integrated board 1 of the present invention, wood fibers 1a are integrated by molding with a binder 1b. That is, the wood fiber 1a is integrated by molding with the binder 1b, and the density distribution of the wood fiber integrated plate is in the range of 0.75 to 1.20 g / cm 3 , and the density is 0.80 g / cm within the surface portion of 1.5 mm. It is a thin wood fiber integrated board having a thickness of 3.5 mm or less in which three or more layers are present.

木質繊維集積板は、木質繊維の大きさとして長さが0.1mm〜10.0mmで直径が1μm〜300μmが大半を占め、かつ木質繊維として含水率が15重量%以下のものが用いられる。そして、このような条件を満足する木質繊維にバインダーを付着させ、木質繊維を加圧成形して一体に結合することで本発明の木質繊維集積板を製造できる。   As the wood fiber integrated board, wood fibers having a length of 0.1 mm to 10.0 mm and a diameter of 1 μm to 300 μm occupy most, and wood fibers having a moisture content of 15% by weight or less are used. And the wood fiber integrated board of this invention can be manufactured by making a binder adhere to the wood fiber which satisfy | fills such conditions, press-molding a wood fiber, and couple | bonding together.

本発明の木質繊維集積板を製造するために用いる木質繊維としては、植林再生可能な広葉樹又は針葉樹の木材をチッパーでチップ化し、得られたチップを解繊したものが用いられる。解繊には、140〜180℃程度の高圧蒸気によりチップを蒸煮した後、ディスクリファイナーによって解繊する方法等が用いられる。   As the wood fiber used for producing the wood fiber integrated board of the present invention, a hardwood or conifer wood that can be planted and regenerated is chipped with a chipper and the obtained chip is defibrated. For defibration, a method is used in which the chips are steamed with high-pressure steam at about 140 to 180 ° C. and then defibrated with a disc refiner.

本発明においては、木質繊維の大きさとして長さが0.1mm〜10.0mmで直径(太さ)が1μm〜300μmが大半を占めるものが用いられる。ここで大半とは、木質繊維集積板の製造に用いる木質繊維総量中、長さが0.1mm〜10.0mmで且つ直径が1μm〜300μmの大きさの木質繊維が約70重量%、好ましくは約80重量%以上であることを意味する。
木質繊維の長さが10mmを越えると表面平滑性が低下し、化粧シートを積層した後の塗面の美麗さを損なう。木質繊維の長さが0.1mm〜10.0mmであればすぐれた表面平滑性を得ることが可能となる。なお、木質繊維の直径は、顕微鏡により観察し求めることができる。
In the present invention, a wood fiber having a length of 0.1 mm to 10.0 mm and a diameter (thickness) of 1 to 300 μm is used. Here, the majority means that about 70% by weight of wood fibers having a length of 0.1 mm to 10.0 mm and a diameter of 1 μm to 300 μm in the total amount of wood fibers used for the production of the wood fiber integrated board, preferably about 80%. It means that it is more than wt%.
When the length of the wood fiber exceeds 10 mm, the surface smoothness is lowered, and the beauty of the coated surface after the decorative sheet is laminated is impaired. If the length of the wood fiber is 0.1 mm to 10.0 mm, excellent surface smoothness can be obtained. The diameter of the wood fiber can be obtained by observing with a microscope.

木質繊維は含水率が15重量%以下のものが用いられる。この含水率を有する木質繊維は、木質繊維の乾燥条件を選択することで得られる。
木質繊維として、含水率が15重量%を越えるものを用いると木質繊維集積板の表面部に密度が高い層ができ易くなり、加圧成形時のプレス時間も延びる。なお、木質繊維の含水率は、日本工業規格、JIS A 5905-2003 6.4で求めることができる。即ち、木質繊維の含水率(重量%)は、(m1−m)×100/mである。 ここで、m1は、乾燥前の木質繊維の質量(g)であり、mは該木質繊維を103±2℃の空気乾燥機に入れ恒量になったときの質量(g)である。
Wood fibers having a moisture content of 15% by weight or less are used. The wood fiber having this moisture content can be obtained by selecting the drying conditions of the wood fiber.
When wood fibers having a moisture content exceeding 15% by weight are used, a layer having a high density is easily formed on the surface portion of the wood fiber accumulation plate, and the pressing time at the time of pressure molding is extended. The moisture content of the wood fiber can be determined by Japanese Industrial Standard, JIS A 5905-2003 6.4. That is, the moisture content (% by weight) of the wood fiber is (m 1 −m 0 ) × 100 / m 0 . Here, m 1 is the mass (g) of the wood fibers before drying, and m 0 is the mass (g) when the wood fibers are put in an air dryer at 103 ± 2 ° C. to become a constant weight.

木質繊維を結合するためのバインダー1bとしては、ユリア樹脂、メラミンユリア樹脂、フェノール樹脂、ポリウレタン樹脂、エポキシ樹脂等及びこれらの混合物を用いることができる。用いるに好ましいバインダーは、加圧成形時のプレス時間短縮及び成形品の耐水性向上より、ポリウレタン樹脂及びメラミンユリア樹脂である。特にポリイソシアネート樹脂としては、イシシアネート基を分子中に2個以上有するイソシアネート化合物であり、イソシアネート化合物の例は、粗ジフェニルメタン-4,4’−ジイソシアネ−ト等である。   As the binder 1b for binding wood fibers, urea resin, melamine urea resin, phenol resin, polyurethane resin, epoxy resin, and the like, and mixtures thereof can be used. Preferred binders to be used are polyurethane resins and melamine urea resins because of shortening the press time during pressure molding and improving the water resistance of the molded product. In particular, the polyisocyanate resin is an isocyanate compound having two or more isocyanate groups in the molecule, and an example of the isocyanate compound is crude diphenylmethane-4,4'-diisocyanate.

バインダー1bの使用量は、木質繊維の絶乾重量100重量部に対して、固形分で4〜30重量部であることが好ましい。バインダー量が4重量部未満では曲げ強度が弱く、30重量部を越える量では、過剰のため剛性が過度でまた経済的に不利である。ポリイソシアネート樹脂の総量は4〜12重量部、メラミンユリア樹脂の総量は10〜35重量部であることがそれぞれ好ましい。   It is preferable that the usage-amount of the binder 1b is 4-30 weight part by solid content with respect to 100 weight part of the absolutely dry weight of a wood fiber. When the amount of the binder is less than 4 parts by weight, the bending strength is weak, and when the amount exceeds 30 parts by weight, the rigidity is excessive due to the excess, which is economically disadvantageous. The total amount of the polyisocyanate resin is preferably 4 to 12 parts by weight, and the total amount of the melamine urea resin is preferably 10 to 35 parts by weight.

本発明の木質繊維集積板は、つぎのように製造する。
長さ0.1〜10mmで直径1〜300μmの大きさが大半を占め、かつ含水率が15重量%以下の木質繊維とバインダー等を混合して、前記木質繊維1aの表面上にバインダー1bを付着させることで木質繊維集積板を形成するための木質繊維材が準備される。
木質繊維1aとバインダー1bとの混合は、スプレー方式で塗布する方法でもよい。例えば、低速で回転する回転ドラム内へ木質繊維を入れ、前記回転ドラム内で木質繊維が自然落下する際にバインダーを木質繊維にスプレー塗布する方法が好適である。
The wood fiber accumulation board of the present invention is manufactured as follows.
Most of the length is 0.1 to 10 mm and the diameter is 1 to 300 μm, and the moisture content is 15% by weight or less. The wood fiber and the binder are mixed to adhere the binder 1b onto the surface of the wood fiber 1a. Thus, a wood fiber material for forming a wood fiber integrated board is prepared.
The wood fiber 1a and the binder 1b may be mixed by a spraying method. For example, a method is preferable in which wood fibers are put into a rotating drum that rotates at a low speed, and the binder is spray-coated on the wood fibers when the wood fibers naturally fall in the rotating drum.

つぎに、バインダーの付着した木質繊維をマット状に仮成形し、このマット状物を熱圧成形することで木質繊維が一体に結合した木質繊維集積板が得られる。この熱圧成形により、マット状物中のバインダーは反応して硬化し、木質繊維はバインダーの硬化物により結合される。   Next, the wood fiber to which the wood fibers are integrally bonded is obtained by temporarily forming the wood fibers to which the binder is attached into a mat shape and then subjecting the mat-like material to hot pressure molding. By this hot pressing, the binder in the mat-like material reacts and cures, and the wood fibers are bound by the cured binder.

熱圧成形温度は、バインダーの種類にもよるが、約150〜230℃である。木質繊維として含水率が15重量%以下のものを用い、熱圧プレス時の熱圧定盤の木質繊維への接触タイミング及び圧力を調整することにより、図2に示すように密度分布が0.75〜1.20g/cmの範囲であって、表面部1.5mm以内において密度が0.80g/cm以上の層が存在する厚さ3.5mm以下の薄物木質繊維集積板を得ることができる。
厚み方向の密度分布(デンシティプロファイル,Density Profile)は、密度分布測定器を用いて測定した。熱圧プレス時の熱圧定盤の木質繊維への接触タイミングが短時間程、表層密度が0.80g/cm以上の層が得られ易い。このような木質繊維集積板は、表面平滑性及び強度・剛性に優れる。
The hot pressing temperature is about 150 to 230 ° C. although it depends on the type of binder. A wood fiber having a moisture content of 15% by weight or less is used as a wood fiber, and by adjusting the contact timing and pressure to the wood fiber of the hot press platen during hot press, the density distribution is 0.75 to in the range of 1.20 g / cm 3, it is possible to density the less the surface portion 1.5mm to obtain a 0.80 g / cm 3 or more of the following thickness 3.5mm which layers are present in the thin wood fiber stacking plate.
The density distribution in the thickness direction (Density Profile) was measured using a density distribution measuring instrument. A layer with a surface layer density of 0.80 g / cm 3 or more is easily obtained as the contact timing of the hot press platen with the wood fiber during the hot press is shorter. Such a wood fiber integrated board is excellent in surface smoothness, strength, and rigidity.

次に本発明の木質繊維集積板1を用いた床材Aについて説明する。
図3は本発明に係る床材Aの断面図である。同図に示すように、本発明の床材Aは、芯層である合板10に木質繊維集積板1を貼合せるが、表裏両面または表面のみに貼合わせてもよい。貼合せに用いる接着剤は、日本工業規格、JIS A5536-2007 表3 F☆☆☆☆等級の接着剤を用いることが好ましい。
図3に示す実施形態では、植林再生可能な木質ボード(合板、パーティクルボード、MDFまたはOSB(Oriented
Strand Boardの略))を芯層として使用し、両面に貼合せた。
Next, the flooring A using the wood fiber accumulation board 1 of this invention is demonstrated.
FIG. 3 is a cross-sectional view of the flooring A according to the present invention. As shown in the figure, the flooring material A of the present invention allows the wood fiber integrated board 1 to be bonded to the plywood 10 that is the core layer, but it may be bonded to both the front and back surfaces or only the surface. It is preferable to use an adhesive of Japanese Industrial Standard, JIS A5536-2007 Table 3 F ☆☆☆☆ grade as the adhesive used for bonding.
In the embodiment shown in FIG. 3, a woody board (plywood, particle board, MDF or OSB (Oriented
The abbreviation of Strand Board)) was used as the core layer, and was bonded to both sides.

更にその表面層に0.03〜0.3mm厚さの平滑性向上樹脂を含浸して半硬化させた化粧シート2を積層する。この化粧シート2は、たとえば、基材として50〜250g/mのクラフト紙、チタン紙または和紙を使用し、平滑性向上樹脂の含浸量30〜65重量%である樹脂含浸シートを70〜150℃乾燥炉で半硬化させて103℃揮散減量が7.0%以下のシートである。この化粧シート2の完全硬化も含めて加熱すると本発明の床材が得られる。 Further, a decorative sheet 2 which is semi-cured by impregnating a smoothness improving resin having a thickness of 0.03 to 0.3 mm is laminated on the surface layer. This decorative sheet 2 uses, for example, 50 to 250 g / m 2 of kraft paper, titanium paper or Japanese paper as a base material, and 70 to 150 resin impregnated sheet having an impregnation amount of the smoothness improving resin of 30 to 65% by weight. It is a sheet that is semi-cured in a drying oven at a temperature of 103 ° C and has a volatilization loss of 7.0% or less. When the decorative sheet 2 is completely heated, including the complete curing, the flooring of the present invention is obtained.

0.03〜0.3mm厚さの化粧シート2の表面は完全硬化したとき化粧シート単体の平面引張強さ「JIS A 5905:2007、6.16」は、1.0MPa以上のため、強靭な剛性及び平滑性を呈する。その表面層3が、平滑性向上樹脂により平滑性が高められた層である。このように木質繊維集積板の表面が平滑性に優れるため、従来技術で必要であった化粧表面への厚さ20〜80μm程度のウレタン塗装等は不要となる。また、化粧シートは、プリント紙使用のため美麗表面保護の役目を呈する。   When the surface of the decorative sheet 2 having a thickness of 0.03 to 0.3 mm is completely cured, the flat tensile strength “JIS A 5905: 2007, 6.16” of the decorative sheet itself is 1.0 MPa or more, and thus exhibits tough rigidity and smoothness. . The surface layer 3 is a layer whose smoothness is enhanced by the smoothness improving resin. Thus, since the surface of the wood fiber integrated board is excellent in smoothness, urethane coating or the like having a thickness of about 20 to 80 μm on the decorative surface, which is necessary in the prior art, becomes unnecessary. In addition, the decorative sheet serves as a beautiful surface protection because it uses printed paper.

本発明の木質繊維集積板1および床材Aは、つぎの利点がある。
1)植林再生可能な広葉樹・針葉樹をHDF及び合板に使用しているため、環境対応の床材となる。
2)図3に示すように表層HDFが表面部1.5mm以内において密度が0.80g/cm以上の層が存在するため、表面平滑性に優れ、補修工程不要である。そして、0.03〜0.3mm厚さの高性能樹脂を含浸した化粧シートを積層することが可能である。
3)表層HDFのバインダー及び芯層合板に使用する接着剤として、JIS A5536-2007 表3 F☆☆☆☆等級の接着剤を使用するため、ホルムアルデヒド放散量が少なく、改正建築基準法(2003.7)の内装制限が無い。
4)HDF(High Density Fiber Board、高密度木質繊維集積板)は、強度・剛性に優れるため、図3の床材構成で密度が0.67g/cmであり、曲げヤング係数が65×10MPaであり、JAS 木質フローリング規格の曲げたわみ基準(即ち、床材試料を300mm幅×1800mm(長さ)×12mm(厚さ)として、スパン700mmで支持し、スパン中央に置いた荷重棒の上に21kg重の荷重をかけたときの変位Aと、同様に9kg重の荷重をかけたときの変位Bとの差「A―B」であり、曲げたわみの値として3.5mm以下が合格)が1.5mmであった。従って、本発明の床材は、曲げたわみのJAS規格を満足しており、床材として使用するのに十分な剛性を有していることがわかった。
The wood fiber integrated board 1 and flooring A of the present invention have the following advantages.
1) Since the hardwood and coniferous trees that can be replanted are used for HDF and plywood, it becomes an environmentally friendly flooring.
2) As shown in FIG. 3, since the surface layer HDF has a surface portion within 1.5 mm and a density of 0.80 g / cm 3 or more exists, it has excellent surface smoothness and does not require a repair process. A decorative sheet impregnated with a high-performance resin having a thickness of 0.03 to 0.3 mm can be laminated.
3) JIS A5536-2007 Table 3 F ☆☆☆☆ grade adhesive is used as the adhesive for the surface HDF binder and core layer plywood. There are no interior restrictions.
4) HDF (High Density Fiber Board) is excellent in strength and rigidity, so the density is 0.67 g / cm 3 in the flooring configuration shown in FIG. 3 , and the bending Young's modulus is 65 × 10 2. The bending bending standard of JAS wood flooring standard (ie, floor material sample is 300mm wide x 1800mm (length) x 12mm (thickness), supported by span 700mm, above the load rod placed in the center of span The difference between the displacement A when a load of 21 kg is applied to the load and the displacement B when a load of 9 kg is applied is “AB”, and the bending deflection value is 3.5 mm or less. It was 1.5 mm. Therefore, it was found that the flooring of the present invention satisfies the JAS standard for bending deflection and has sufficient rigidity to be used as a flooring.

1 木質繊維集積板
1a 木質繊維
1b バインダー
10 合板
1 Wood fiber accumulation board 1a Wood fiber 1b Binder 10 Plywood

Claims (9)

木質繊維を集積し、バインダーを用いて一体化成形された集積板であって、
密度分布が0.75〜1.20g/cmの範囲であって、
表層1.5mm以内において密度が0.80g cm以上の層が存在し、
厚さが3.5mm以下である
ことを特徴とする木質繊維集積板。
It is an integrated board that is made of wood fibers and integrated with a binder,
The density distribution is in the range of 0.75 to 1.20 g / cm 3 ,
There is a layer with a density of 0.80 g cm 3 or more within 1.5 mm of the surface layer,
A wood fiber integrated board characterized by having a thickness of 3.5 mm or less.
前記バインダーが、ポリイソシアネート樹脂またはメラミンユリア樹脂である
ことを特徴とする請求項1記載の木質繊維集積板。
2. The wood fiber integrated board according to claim 1, wherein the binder is a polyisocyanate resin or a melamine urea resin.
前記ポリイソシアネート樹脂がポリメリックMDIである
ことを特徴とする請求項2記載の木質繊維集積板。
3. The wood fiber integrated board according to claim 2, wherein the polyisocyanate resin is polymeric MDI.
前記木質繊維は、その含水率が15重量%以下の木質繊維であって、
ポリイソシアネート樹脂を用いたバインダー添加量が12−4重量%である
ことを特徴とする請求項2記載の木質繊維集積板。
The wood fiber is a wood fiber having a moisture content of 15% by weight or less,
The wood fiber-aggregated board according to claim 2, wherein the amount of binder added using a polyisocyanate resin is 12-4% by weight.
前記木質繊維は、その含水率が15重量%以下の木質繊維であって、
メラミンユリア樹脂を用いたバインダー添加量が10−35重量%である
ことを特徴とする請求項2記載の木質繊維集積板。
The wood fiber is a wood fiber having a moisture content of 15% by weight or less,
The woody fiber integrated board according to claim 2, wherein the binder addition amount using melamine urea resin is 10-35% by weight.
前記木質繊維は、その長さが0.1mm〜10.0mmで、直径が1μm〜300μmである
ことを特徴とする請求項1、2、3、4または5記載の木質繊維集積板。
6. The wood fiber assembly board according to claim 1, wherein the wood fiber has a length of 0.1 mm to 10.0 mm and a diameter of 1 μm to 300 μm.
メラミン樹脂、メラミンユリア樹脂またはジアリルフタレート樹脂からなる美麗表面保護および平滑性向上樹脂を含浸した化粧シートを表層に積層した
ことを特徴とする請求項1、2、3、4、5または6記載の木質繊維集積板。
7. A decorative sheet impregnated with a beautiful surface protection and smoothness improving resin made of melamine resin, melamine urea resin or diallyl phthalate resin is laminated on the surface layer of claim 1, 2, 3, 4, 5 or 6 Wood fiber integrated board.
芯層が木質ボードを積層した積層体であり、
前記積層体の表層の少なくとも一方に、請求項1〜7のいずれかに記載の木質繊維集積板を表層のうちの少なくとも一方に積層した
ことを特徴とする床材。
The core layer is a laminate of wood boards,
A flooring material, wherein the wood fiber integrated board according to any one of claims 1 to 7 is laminated on at least one of the surface layers on at least one of the surface layers of the laminate.
前記木質ボードの積層体が、合板、パーティクルボード、MDFまたはOSBである
ことを特徴とする請求項8記載の床材。
The flooring according to claim 8, wherein the laminate of the wooden boards is plywood, particle board, MDF or OSB.
JP2011037785A 2011-02-24 2011-02-24 Wood fiber amassed panel and flooring Pending JP2012171302A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018035535A (en) * 2016-08-30 2018-03-08 東洋テックス株式会社 Floor material and manufacturing method thereof
JP2018069670A (en) * 2016-11-02 2018-05-10 株式会社Lixil Fiberboard
WO2018176886A1 (en) * 2017-03-31 2018-10-04 大亚人造板集团有限公司 Process for fabricating geothermal floor substrate and substrate
JP2018531339A (en) * 2015-09-07 2018-10-25 ティー3 ビルディング ソリューションズ リミテッド Construction system and construction materials

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009051113A (en) * 2007-08-28 2009-03-12 Toyo Tex Co Ltd Wood fiber board and flooring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009051113A (en) * 2007-08-28 2009-03-12 Toyo Tex Co Ltd Wood fiber board and flooring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018531339A (en) * 2015-09-07 2018-10-25 ティー3 ビルディング ソリューションズ リミテッド Construction system and construction materials
JP2018035535A (en) * 2016-08-30 2018-03-08 東洋テックス株式会社 Floor material and manufacturing method thereof
JP2018069670A (en) * 2016-11-02 2018-05-10 株式会社Lixil Fiberboard
WO2018176886A1 (en) * 2017-03-31 2018-10-04 大亚人造板集团有限公司 Process for fabricating geothermal floor substrate and substrate

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