JP2004181881A - Substrate for decorative laminate, decorative laminate using the substrate, and flooring material using the decorative laminate - Google Patents

Substrate for decorative laminate, decorative laminate using the substrate, and flooring material using the decorative laminate Download PDF

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Publication number
JP2004181881A
JP2004181881A JP2002354023A JP2002354023A JP2004181881A JP 2004181881 A JP2004181881 A JP 2004181881A JP 2002354023 A JP2002354023 A JP 2002354023A JP 2002354023 A JP2002354023 A JP 2002354023A JP 2004181881 A JP2004181881 A JP 2004181881A
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Prior art keywords
decorative
decorative material
substrate
wood
synthetic resin
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JP2002354023A
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Japanese (ja)
Inventor
Takashi Shimada
島田孝
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Daiken Trade and Industry Co Ltd
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Daiken Trade and Industry Co Ltd
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Priority to JP2002354023A priority Critical patent/JP2004181881A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate for a decorative laminate which is made of a composite material of wooden chips and a synthetic resin and is not liable to dimensional change due to temperature change, a decorative laminate using the substrate and a flooring material using the laminate. <P>SOLUTION: The substrate for a decorative laminate excellent in thermal dimensional stability is so formed that two or more composite material sheets (1a) and (1b) of a synthetic resin mixed with wooden chips are integrally laminated in a way that the directions of manufacturing of the composite sheets (1a) and (1b) are rectangular to each other. The decorative laminate is made of the substrate. The flooring material is made of the laminate. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、建築物の床材、壁材、造作材等の内装用化粧材基材として、及びこの化粧材基材の表面に装飾を施した化粧材として用いるに好適であり、或いはこの化粧材を加工した床材として用いるに好適な、化粧材基材、及びこの化粧材基材を用いた化粧材、及びこの化粧材を用いた床材に関する。
【0002】
【従来の技術】
従来から、合板、MDF、パーティクルボード、集成材等の木質基材の表面に、化粧単板、化粧樹脂シート等を貼着し、更に要すればその表面に塗装を施した化粧材は良く知られており、住宅など建築物の床材、壁材、天井材や、ドア等開口部面材、階段部材、幅木等造作材などの内装用化粧材として用いられている。
【0003】
一方、このような内装用化粧材の木質基材として汎用されている合板は、耐水・耐湿性、耐寸法安定性に優れている反面、熱帯産広葉樹の伐採制限などから、表面が平滑で良質のものが得られ難くなってきている。また、木質加工工場の廃材、木質建築廃材等の木質廃材は、廃棄や焼却処理をするよりもリサイクルすることが望まれており、その一部は、MDFやパーティクルボード等の建築用資材として再利用されているが、これらは合板に較べると耐水性や耐寸法安定性が劣り、その用途も制限されるという問題があった。
【0004】
また、近年上記木質廃材だけでなく、プラスチック廃材のリサイクルも望まれており、このような木質廃材とプラスチック廃材とを複合させた木粉−樹脂複合材が検討されている。このような木粉−樹脂複合材は、例えば下記特許文献1等に記載されており、押し出し成型法やカレンダーロール成型法のような連続成型装置により生産される。
【0005】
【特許文献1】
特開2000−136579
【0006】
【発明が解決しようとする課題】
しかしながら、鋭意検討した結果、このような複合材は、耐水性、強度等に優れている反面、上記押し出し成型等の成型法により連続生産されると、生産方向(押し出し成型の場合、押し出し方向)に直交する方向の熱寸法変化率が、生産方向の熱寸法変化率よりも顕著に大きくなるという知見を得、このため、日照変化や暖冷房などの強い温度変化を受けると、化粧層が損傷したり、化粧材同士の接合部に膨れが生じる等の不具合が発生し易くなるという問題があった。
【0007】
本発明は、かかる従来の欠点に鑑みなされたもので、熱寸法変化率が抑制され均質化された化粧材基材、及びこの化粧材基材を用いた化粧材、及びこの化粧材を用いて形成される床材を提供することを目的とする。
【0008】
【課題を解決するための手段】
上記の目的を達成するために、請求項1の発明に係る化粧材基材は、合成樹脂に木質系砕片を混入した複数枚の木質系砕片−合成樹脂複合材シートを、その生産方向が互いに直交するように積層一体化した構成とした。これによれば、上記化粧材基材の熱寸法変化率は、複合材シート単体の場合と較べて生産方向と直交する方向の値が小さく、熱寸法変化率の良い化粧材基材を得ることができる。
【0009】
請求項2の発明に係る化粧材基材は、木質系砕片−合成樹脂複合材シートの厚さを0.3mm〜5mmの薄シートとする構成とした。これによれば、薄物から厚物まで幅広い化粧材基材を、上記薄シートを組み合わせて形成することができるとともに、積層枚数を増やすことにより熱寸法変化率が一層抑制され均質化された化粧材基材を得ることができる。
【0010】
請求項3の発明に係る化粧材基材は、木質系砕片−合成樹脂複合材シートに無機質充填材を混入した構成とした。これによれば、無機質充填材の充填効果により、熱寸法変化率が一層低減された化粧材基材を得ることができる。
【0011】
請求項4の発明に係る化粧材基材は、請求項1の発明において、木質系砕片−合成樹脂複合材シートに、カルボン酸変性ポリオレフィンが混入された構成とした。これによれば、複合材シート中に木質系砕片を一層多く且つ均一に混入することができるので、熱寸法変化率の一層の向上と、均質性や質感の良い化粧材基材を得ることができる。
【0012】
請求項5の発明に係る化粧材は、請求項1乃至4に記載の化粧材基材の表面に、化粧単板、化粧紙、化粧樹脂シート等からなる化粧層を設けた構成とした。これによれば、熱変化によっても化粧層に損傷を受け難い化粧材を得ることができる。
【0013】
請求項6の発明に係る化粧材は、請求項5に記載の化粧材の裏面側に基板が接着されてなる構成とした。これによれば、基板表面に平滑性を損なうような少々の欠点が存在しても、その欠点が化粧層に現出するのを化粧材によってカバーすることができ、基板の適用幅の広い化粧材を得ることができる。
【0014】
請求項7或いは請求項8の発明に係る床材は、請求項5に記載の化粧材の裏面側、或いは請求項6に記載の基材の裏面側に緩衝材を貼着した構成とした。このことにより、下地への馴染み性や防音性の向上した床材を得ることができる。
【0015】
また、請求項9或いは請求項10の発明に係る床材は、請求項7に記載の化粧材の裏面側、或いは請求項8に記載の基材の裏面側に、裏面側に開口する凹溝を設けた構成とした。このことにより、下地への馴染み性や防音性が一層向上した床材を得ることができる。
【0016】
請求項11の発明に係る床材は、請求項5に記載の化粧材基材の内部、或いは請求項6に記載の基材の内部に、電気式、又は温水式の暖房装置を組みこんだ構成にした。このことにより、昇温時にあっても熱寸法変化率が小さく、前記不具合の発生が少ない暖房用の床板を得ることができる。
【0017】
【発明の実施の形態】
図1は、本発明の実施形態に係る化粧材基材(A)の説明図である。この化粧材基材(A)は、木質系砕片と合成樹脂との混合組成物を押し出し成型装置に供給し、押し出し成型することにより形成された厚さ2mmの3枚の木質系砕片−合成樹脂複合材シートを、隣接する互いの複合材シートの生産方向が直交するように積層接着して形成されている。
【0018】
即ち、図1より、生産方向(押し出し方向)が長手方向の木質系砕片−合成樹脂複合材シート(1a)と生産方向(押し出し方向)が短手方向の木質系砕片−合成樹脂複合材シート(1b)とを、上記複合材シート(1a)が表裏層を構成し、上記複合材シート(1b)が芯層を構成し、上記複合材シート(1a)の生産方向と上記複合材シート(1b)の生産方向とが互いに直交する向きとなるように積層接着して形成されている。
【0019】
木質系砕片としては、木材の他、建築木質廃材、工場木質廃材などのリサイクル木質廃材を、粉粒状や繊維状に細かく破砕処理したものを用いることができる。また、合成樹脂としては、特に限定されるものではないが、例えばポリエチレン、ポリプロピレンなどのポリオレフィン樹脂、塩化ビニル樹脂、ABS樹脂などの熱可塑性樹脂を用いるのが好適である。このような合成樹脂は、化粧材基材の使用目的に応じて軟質のものや硬質のものを選択して使用することができる。
【0020】
木質系砕片の合成樹脂への混入割合は、木質系砕片と合成樹脂の合計重量に対し、木質系砕片が15重量%から85重量%程度である。木質系砕片の混入割合が15重量%未満となると、プラスチック感が強くなって複合材シートの加工性や風合いが低下し、また熱寸法変化率の改善効果も乏しくなり、85重量%を超えると、脆くなるなど強度的性質が低下したり、均一な成型物を製造し難くなるなどの不具合が生じることがある。
【0021】
上記3層に積層した複合材シート(1a)(1b)(1a)の接着は、接着剤を用いて行なうことができる。使用する接着剤は、熱可塑性のものを用いることもできるが、エポキシ樹脂、ビニルウレタン樹脂のように熱硬化性樹脂の方が化粧材基材の熱寸法変化を押さえる効果が期待できるので好ましい。この他に上記3層に積層した複合材シート(1a)(1b)(1a)を加熱融着により積層接着することもできる。
【0022】
このようにして形成された化粧材基材(A)は、上記のように3枚の複合材シート(1a)(1b)(1a)が互いに直交するように積層接着して形成されているので、複合材シート(1)の押し出し成型装置による生産方向(押し出し方向)の熱寸法変化がそれと直交する方向の熱寸法変化に較べて大きくなるという不具合が軽減され、熱寸法安定性が改善されたものとなる。
【0023】
上記実施形態に係る化粧材基材(A)を構成する複合材シートの厚さは2mm厚さに限らず、0.3mm〜5mm程度のものを用いるのが良い。0.3mm未満となると複合材シートの安定成型が難かしくなったり破損し易くなったりする。また5mmを超えると適用する化粧材基材が特殊な厚物に限られるとともに積層枚数も少なくなり、熱寸法変化率が十分改善できないことがある。
【0024】
複合材シートの積層枚数は、3枚に限らず2枚以上であれば良いが、3枚以上とすることにより熱寸法変化率を一層向上させることができる。また異なる厚さのもの複数枚を組み合わせて用いるようにすることもできる。
【0025】
また、複合材シートには、無機質充填材を混入しておくこともできる。このような無機質充填材として、クレー、炭酸カルシウム、タルク、酸化チタン、白土、シリカ、水酸化アルミニウム、硫酸バリウムなどを挙げることができる。そして、これらの無機質充填材の1種乃至複数種を選択して、木質系砕片、合成樹脂、或いは両者の混合物に混入しておくことができる。
【0026】
無機質充填材の混入は、増量的効果の他に、複合材シートの密度を高めて硬質化したり、熱寸法変化率を小さくしたりするのに役立つものであり、合成樹脂100重量部に対し100重量部以下程度の割合で混入するのが良い。100重量部を超えて混入する場合、複合材シートが脆く、破損し易くなることがあり好ましくない。
【0027】
また、複合材シートには、マレイン酸変性ポリオレフィン等のカルボン酸変性ポリオレフィンを混入しておくこともできる。このような変性ポリオレフィンの混入によって、成型時における木質系砕片と合成樹脂との均一混合性を高め、木質系砕片の合成樹脂への混入率を上げることができ、均質性と木質砕片の混入割合の高い複合シートを形成することができる。尚、このようなマレイン酸変性ポリオレフィン等の変性ポリオレフィンは、変性ポリオレフィンの形成に必要な原料を予め混入しておき、混合成型中にそれらを反応させて形成するようにしても良い。
【0028】
図2は、本発明の実施形態である化粧材(B)を示す。この化粧材(B)は、前記化粧材基材(A)と、この化粧材基材(A)の表面に設けられた、塗装仕上げの化粧突板からなる化粧層(2)とで構成されている。化粧層(2)としては、この他に樹脂含浸化粧突板、印刷化粧紙、樹脂含浸印刷化粧紙、樹脂製印刷シート等を用いることもできる。
【0029】
このような化粧材(B)は、化粧材基材(A)の熱寸法変化率が軽減されているので、熱環境の変化によって化粧層(2)に亀裂、割れ、膨れ等の損傷が生じるのを防止でき、耐久性に優れている。また、化粧材(B)同士を接合して施工した場合に、その接合部に熱膨張や熱収縮によって膨れや目隙が生じるのを防止することができる。
【0030】
図3は、本発明の実施形態である床材(C)を示す。この床材(C)は、前記化粧材(B)の裏面側に、裏面側に開口する多数の裏溝(3)が幅方向(短手方向)に設けられているとともに、緩衝材(4)が貼着されて形成されている。このため、前記化粧材(B)に較べて柔軟性が付与され、床下地への馴染み性が向上しているとともに、裏溝(3)と緩衝材(4)の働きによって防音効果を有するものとなる。
【0031】
緩衝材(4)としては、例えば不織布、ポリウレタン発泡シート等樹脂発泡シート、無機質充填材が混入された高密度樹脂シート等を用いることができる。
【0032】
尚、上記床材(C)の変形例として、裏溝(3)がなく緩衝材(4)だけが貼着された床材や、緩衝材(4)がなく裏溝(3)だけが設けられた床材を挙げることができる。
【0033】
図4は、本発明の他の実施形態である床材(D)を示す。この床材(D)は、木質基板(5)の表面に、前記化粧材(B)が貼着されている。そして、その裏面側には、裏面側に開口する裏溝(3)が設けられ、更に緩衝材(4)が貼着されて形成されている。
【0034】
木質基板(5)としては、合板、木質繊維板、パーティクルボード、集成材、或いはこれらの複合材を用いることができる。特に、床材(D)は、化粧層(2)との間に化粧材基材(A)が介在しているので、基板(5)の欠点が化粧層(2)に現出するのを阻止することができる。このため、これら木質基板(5)として、表面に多少の傷や節などの欠点部が存在し平滑性に劣るもの、例えば上記のような欠点部の多い針葉樹合板や針葉樹単板等を用いることができる。
【0035】
図5は、本発明の他の実施形態である暖房用の床材(E)を示す。この床材(E)は、基板(5)の表面に温水パイプを収容する温水パイプ収容溝(6)が蛇行状に設けられており、この上にアルミシートからなる均熱板(7)を介して、前記図2に示した化粧材(B)が接着一体化されて、温水式暖房用の床材に構成されている。尚、ここにおいて、床材(E)の表面は、温水パイプを通す温水パイプ収容溝(6)に替えて、電気式のヒーター線を収容するヒーター線収容溝を設けた電気式暖房用の床材に構成することもできる。
【0036】
図6は、本発明の他の実施形態である暖房用の床材(F)を示す。この床材(F)は、前記図2に示した化粧材(B)の裏面に温水パイプを収容する温水パイプ収容溝(6)が蛇行状に設けられて構成されている。ここにおいて、化粧材(B)の裏面に温水パイプ収容溝(6)を設けるのに替えて、化粧材(B)の化粧材基材(A)の表面に電気式のヒーター線を収容するヒーター線収容溝を設けた電気式暖房用の床材に構成することもできる。
【0037】
上記床材(E)および床材(F)は、いずれも暖房時に昇温するが、化粧材基材(A)の部分の熱寸法変化率が小さくなっているため、表面の化粧層(2)に割れや亀裂などの不具合が生じない、耐久性の良い暖房用の床材を形成することができる。
【0038】
【実施例1】
ポリプロピレン樹脂100重量部、炭酸カルシウム25重量部、木粉(ヒノキ材の気乾鋸屑木粉)50重量部を混練装置に投入して加熱混練し、次いで押し出し成型することにより、2mm厚さの板状の木質砕片−合成樹脂複合材を作製した。次いでこの複合材の表裏面を80メッシュ研磨材を装着した木工用サンダーで軽くサンディングしたのち、その2枚を生産方向(押し出し方向)が長手方向となるように表裏層に配するとともに、他の1枚を生産方向(押し出し方向)が直交方向となるように芯層に配し、水性ビニルウレタン樹脂接着剤(塗布量150g/m2)にて、7Kg/cm2の圧力で冷圧して接着一体化し、実施例1に係る化粧材基材を得た。
【0039】
次いで得られた化粧材基材の表面に、エチレン酢酸ビニル樹脂接着剤を80g/m2塗布し、指触乾燥した後100μ厚のポリオレフィン樹脂化粧シートを5kg/cm2の圧力で冷圧し、更にその表面にUV塗料を塗布してUV塗装を行い化粧材(イ)を得た。次いで、得られた化粧材(イ)の30℃から80℃までの熱寸法変化を、生産方向とそれと直交する幅方向とについて測定し、次式に従って熱寸法変化率(%)を算出した。その結果を表1に示す。
【0040】
【式】

Figure 2004181881
【0041】
【実施例2】
ポリプロピレン樹脂100重量部、炭酸カルシウム25重量部、木質繊維粉(MDF廃材を150メッシュ以下に粉砕したもの)70重量部、マレイン酸変性低分子ポリプロピレン3重量部を、実施例1と同様にして加熱混練し、押し出し成型することにより、3mm厚さと1.5mm厚さの板状の木質砕片−合成樹脂複合材を作製し、実施例1と同様にしてサンディングした。次いでこの複合材を上から順に1.5mm厚さ、3mm厚さ、1.5mm厚さの順で且つ表裏層の1.5mm厚さの複合材は生産方向(押し出し方向)が同じとなるように配し、3mm厚さの複合材は生産方向(押し出し方向)が上記表裏層の複合材の生産方向と直交する方向となるように芯層に配して、エポキシ樹脂接着剤(塗布量150g/m2)を用いて7Kg/cm2の圧力で冷圧することにより、実施例2に係る化粧材基材を得た。
【0042】
次いで、この化粧材基材の表面に水性の尿素−SBR系接着剤を100g/m2塗布し、0.25mm厚さの湿潤スライス単板を6kg/cm2、120℃で1分間熱圧し、更にその表面にUV塗料を塗布してUV塗装を行い実施例2に係る化粧材(ロ)を得た。次いで、得られた化粧材(ロ)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0043】
【実施例3】
実施例2で得た1.5mm厚さの木質砕片−合成樹脂複合材を、上から順に生産方向、生産方向と直交する方向、生産方向、生産方向と直交する方向に積層し、実施例2と同様にして接着し、実施例3に係る化粧材基材を得た。次いでこの化粧材基材の表面に、実施例2と同様にしてスライス単板を接着しUV塗装を施して実施例3に係る化粧材(ハ)を得た。次いで得られた化粧材(ハ)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0044】
【比較例1】
実施例1〜3で用いたポリプロピレン樹脂のみを混練装置に投入して加熱混練し、次いで押し出し成型することにより、6mm厚さの板状の比較例1にかかるポリプロピレン樹脂板(ニ)を得た。次いで得られたポリプロピレン樹脂板(ニ)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0045】
【比較例2】
実施例1〜3で用いたポリプロピレン樹脂100重量部に炭酸カルシウム25重量部を混合した組成物を実施例1と同様に混練装置に投入して加熱混練し、次いで押し出し成型することにより、6mm厚さの板状の比較例2に係るポリプロピレン樹脂板(ホ)を得た。次いで得られたポリプロピレン樹脂板(ホ)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0046】
【比較例3】
比較例2の組成物を比較例2と同様にして押し出し成型して、2mm厚さの無機質充填材混入ポリプロピレン樹脂板を得た。次いでこの樹脂板3枚を実施例1に記載したと同様に芯層のポリプロピレン樹脂板の生産方向(押し出し方向)が表裏層のポリプロピレン樹脂板の生産方向(押し出し方向)と直交するように積層接着して比較例3に係るポリプロピレン樹脂板(ヘ)を得た。次いで得られたポリプロピレン樹脂板(ヘ)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0047】
【比較例4】
比較例2の組成物を比較例2と同様にして押し出し成型して、1.5mm厚さと3mm厚さの無機質充填材混入ポリプロピレン樹脂板を得た。次いでこの樹脂板を実施例2と同様にして、上から順に1.5mm厚さ、3mm厚さ、1.5mm厚さの順で且つ表裏層の1.5mm厚さの樹脂板と芯層の3mm厚さの樹脂板との生産方向が直交するように配し、実施例2と同様にしてこれら3枚の樹脂板を積層接着し、比較例4に係るポリプロピレン樹脂板(ト)を得た。次いで得られたポリプロピレン樹脂板(ト)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0048】
【比較例5】
実施例1に記載の組成物を実施例1と同様にして押し出し成型し、6mm厚さの板状の木質砕片−合成樹脂複合材を作製した。この複合材の表面に実施例1と同様にして実施例1と同様の100μ厚のポリオレフィン樹脂化粧シートを貼着し、比較例5に係る化粧材(チ)を得た。次いで得られた化粧材(チ)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0049】
【比較例6】
実施例1に記載の組成物を実施例1と同様にして押し出し成型し、実施例1と同様に2mm厚さの板状の木質砕片−合成樹脂複合材を作製した。次いでこの複合材3枚を、生産方向(押し出し方向)が同一方向となるように積層し、実施例1と同様に接着して実施例1に係る化粧材基材を得た。次いでこの化粧材基材の表面に実施例1と同様にして実施例1と同様の100μ厚のポリオレフィン樹脂化粧シートを貼着し、比較例6に係る化粧材(リ)を得た。次いで得られた化粧材(リ)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0050】
【比較例7】
実施例2に記載の組成物を実施例2と同様にして押し出し成型し、6mm厚さの板状の木質砕片−合成樹脂複合材を作製した。この複合材の表面に実施例2と同様にして実施例2と同様の化粧突板を貼着し、比較例7に係る化粧材(ヌ)を得た。次いで得られた化粧材(ヌ)の熱寸法変化率を実施例1と同様にして測定し算出した。その結果を表1に示す。
【0051】
【表1】
Figure 2004181881
【0052】
表1より、複合材の組成物に木質砕片を入れること、複合材の複数枚を生産方向が互いに直交するように積層接着することの2条件が相乗的効果を生じ、複合材の生産方向に直交する方向(幅方向)の熱寸法変化率が小さくなっていることが判る。
【0053】
【発明の効果】
以上説明した如く、請求項1の発明に係る化粧材基材によると、合成樹脂に木質系砕片を混入した複数枚の木質系砕片−合成樹脂複合材シートを、該複合材シートの生産方向が互いに直交するように積層一体化しているので、生産方向と直交する方向の熱寸法変化率が小さく抑制された化粧材基材を得ることができ、化粧材や化粧板の基板として用いた場合における熱膨張・収縮に伴う化粧層や、継ぎ目部等に発生し易い欠点や不具合の発生を防止することができる。
【0054】
請求項2の発明に係る化粧材基材によると、木質系砕片−合成樹脂複合材シートの厚さが0.3mm〜5mmの薄シートを用いる構成としたので、薄物から厚物まで幅広い化粧材基材を形成できるとともに、積層枚数を増やすことができるので、熱寸法変化率が一層抑制均質化された化粧材基材を得ることができる。
【0055】
請求項3の発明に係る化粧材基材によると、木質系砕片−合成樹脂複合材シートに無機質充填材が混入されているので、無機質充填材の充填効果により、熱寸法変化率が更に低減された化粧材基材を得ることができる。
【0056】
請求項4の発明に係る化粧材基材によると、木質系砕片−合成樹脂複合材シートに、カルボン酸変性ポリオレフィンが混入されているので、木質系砕片と合成樹脂との混合状態が一層良好な化粧材基材を得ることができ、熱寸法変化率も更に改善することができる。
【0057】
請求項5の発明に係る化粧材によると、請求項1乃至4に記載の化粧材基材の表面側に、化粧単板、化粧紙、化粧樹脂シート等からなる化粧層を設けているので、表面の装飾保護性を高めるとともに、化粧層に熱変化による亀裂、剥離等の不具合が発生するのを防止することができる。
【0058】
請求項6の発明に係る化粧材によると、化粧材基材の裏面側に基板が接着されているので、前記化粧材基材の諸効果に加えて、化粧材自体の諸強度を高めることができるとともに、表面の平滑性が多少悪い等表面状態に劣る基板であっても、その影響が化粧層に現出することなく良好な外観に形成することができる。
【0059】
請求項7の発明に係る床材によると、請求項5に記載の化粧材の裏面側に緩衝材が貼着されており、また、請求項8の発明に係る床材によると、請求項6に記載の基板の裏面側に緩衝材が貼着されているので、前記化粧材の効果に加えて、いずれの場合も防音性と床下地への馴染み性を向上させることができる。
【0060】
請求項9の発明に係る床材によると、請求項7の発明において、化粧材に裏面側に開口する多数の溝が形成されており、また、請求項10の発明に係る床材によると、基板に裏面側に開口する多数の溝が形成されているので、いずれの場合も防音性と床下地への馴染み性を一層向上させることができる。
【0061】
請求項11の発明に係る床材によると、請求項5に記載の化粧材の化粧材基材の内部、又は請求項6に記載の化粧材の基板の内部に、電気式又は温水式の暖房装置が組み込まれているので、昇温時にあっても熱寸法変化率が小さく、化粧層や床板同士の接合部等に生じ易い不具合の発生が防止された暖房用に適した床材とすることができる。
【図面の簡単な説明】
【図1】本発明の実施形態である化粧材基材(A)を示す断面図である。
【図2】本発明の実施形態である化粧材(B)を示す断面図である。
【図3】本発明の実施形態である床材(C)を示す断面図である。
【図4】本発明の他の実施形態である床材(D)を示す断面図である。
【図5】本発明の他の実施形態である床材(E)を示す断面図である。
【図6】本発明の他の実施形態である床材(F)を示す断面図である。
【符号の説明】
(A) 化粧材基材
(B) 化粧材
(C)〜(F) 床材
(1)(1a)(1b) 複合材シート
(2) 化粧層
(3) 裏溝
(4) 緩衝材
(5) 基板
(6) 温水パイプ収容溝
(7) 均熱板[0001]
TECHNICAL FIELD OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention is suitable for use as a decorative base material for interiors such as flooring materials, wall materials, construction materials, and the like of buildings, and as a decorative material in which decoration is applied to the surface of the decorative base material. The present invention relates to a decorative material base material suitable for use as a processed floor material, a decorative material using the decorative material base material, and a floor material using the decorative material.
[0002]
[Prior art]
Conventionally, decorative materials in which a decorative veneer, a decorative resin sheet, etc. are adhered to the surface of a wooden base material such as plywood, MDF, particle board, and glued lumber, and if necessary, the surface is painted, are well known. It is used as a floor material, a wall material, a ceiling material for buildings such as houses, an opening face material such as a door, a stair member, a skirting board and the like, and a decorative material for interior use.
[0003]
On the other hand, plywood, which is widely used as a wood base material for interior decoration materials, has excellent water resistance, moisture resistance, and dimensional stability, but its surface is smooth and high quality due to restrictions on the cutting of tropical hardwoods. Is becoming difficult to obtain. Also, it is desirable to recycle wood waste such as wood processing plant waste and wood construction waste, rather than discarding or incineration, and some of them are reused as building materials such as MDF and particle board. Although they are used, they have a problem that their water resistance and dimensional stability are inferior to plywood, and their uses are also limited.
[0004]
In recent years, recycling of not only the above-mentioned wood waste material but also plastic waste material has been desired, and a wood flour-resin composite material in which such a wood waste material and a plastic waste material are combined has been studied. Such a wood flour-resin composite material is described in, for example, Patent Document 1 below, and is produced by a continuous molding device such as an extrusion molding method or a calender roll molding method.
[0005]
[Patent Document 1]
JP-A-2000-136579
[0006]
[Problems to be solved by the invention]
However, as a result of intensive studies, such a composite material is excellent in water resistance, strength, etc., but on the other hand, when continuously produced by a molding method such as the extrusion molding, the production direction (in the case of extrusion molding, the extrusion direction). It has been found that the thermal dimensional change rate in the direction perpendicular to the direction becomes significantly larger than the thermal dimensional change rate in the production direction. There is a problem that defects such as swelling and swelling at the joint between the decorative materials are likely to occur.
[0007]
The present invention has been made in view of such conventional drawbacks, and a decorative material substrate in which the thermal dimensional change rate is suppressed and homogenized, a decorative material using the decorative material substrate, and using the decorative material It is intended to provide a flooring to be formed.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a decorative material base material according to the first aspect of the present invention is a decorative material substrate comprising a plurality of wood-based debris-synthetic resin composite sheets in which wood-based debris is mixed into a synthetic resin, wherein the production directions thereof are mutually different. It was configured to be laminated and integrated so as to be orthogonal. According to this, the thermal dimensional change rate of the decorative material base is smaller in the direction orthogonal to the production direction than in the case of the composite material sheet alone, and a good thermal dimensional change rate can be obtained. Can be.
[0009]
The decorative material substrate according to the second aspect of the present invention is configured such that the thickness of the wood-based debris-synthetic resin composite sheet is a thin sheet having a thickness of 0.3 mm to 5 mm. According to this, a wide range of decorative material base materials from thin to thick can be formed by combining the above-mentioned thin sheets, and by increasing the number of laminated sheets, the thermal dimensional change rate is further suppressed and the decorative material is homogenized. A substrate can be obtained.
[0010]
The decorative material substrate according to the third aspect of the present invention has a configuration in which an inorganic filler is mixed into a wood-based debris-synthetic resin composite sheet. According to this, it is possible to obtain a decorative material base material in which the thermal dimensional change rate is further reduced by the filling effect of the inorganic filler.
[0011]
The decorative material base material according to the fourth aspect of the present invention is the decorative material substrate according to the first aspect of the present invention, in which a carboxylic acid-modified polyolefin is mixed into a wood-based debris-synthetic resin composite sheet. According to this, the wood-based debris can be more and uniformly mixed in the composite material sheet, so that it is possible to further improve the thermal dimensional change rate and obtain a decorative material base material having good homogeneity and texture. it can.
[0012]
A decorative material according to a fifth aspect of the present invention has a configuration in which a decorative layer made of a decorative veneer, a decorative paper, a decorative resin sheet, or the like is provided on the surface of the decorative material base material according to the first to fourth aspects. According to this, it is possible to obtain a cosmetic material in which the decorative layer is hardly damaged even by a heat change.
[0013]
A decorative material according to a sixth aspect of the present invention has a configuration in which a substrate is adhered to the back surface of the decorative material according to the fifth aspect. According to this, even if there is a slight defect that impairs smoothness on the substrate surface, the appearance of the defect in the decorative layer can be covered by the decorative material, and the decorative material can be applied to a wide range of substrates. Material can be obtained.
[0014]
The flooring material according to the seventh or eighth aspect of the present invention has a configuration in which a cushioning material is attached to the back side of the decorative material according to the fifth aspect or the back side of the base material according to the sixth aspect. As a result, it is possible to obtain a floor material with improved conformability to the ground and improved soundproofing.
[0015]
The flooring material according to the ninth or tenth aspect of the present invention is a floor groove on the back side of the decorative material according to the seventh aspect or the back side of the base material according to the eighth aspect. Was provided. As a result, it is possible to obtain a flooring material with further improved conformability to the ground and soundproofing.
[0016]
The flooring material according to the eleventh aspect of the present invention incorporates an electric or hot water type heating device inside the decorative material substrate according to the fifth aspect or inside the base material according to the sixth aspect. Was configured. This makes it possible to obtain a heating floor panel in which the rate of change in thermal dimension is small even when the temperature is raised and the occurrence of the above-mentioned problems is small.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an explanatory diagram of a decorative material base material (A) according to an embodiment of the present invention. This decorative material base material (A) is obtained by supplying a mixed composition of woody debris and a synthetic resin to an extruder, and extruding the woody debris into three pieces of 2 mm thick woody debris-synthetic resin. The composite sheets are formed by laminating and bonding such that the production directions of adjacent composite sheets are orthogonal to each other.
[0018]
That is, from FIG. 1, the wood-based debris-synthetic resin composite sheet (1a) whose production direction (extrusion direction) is the longitudinal direction and the wood-based debris-synthetic resin composite sheet (production direction (extrusion direction) is the shortest direction) 1b), the composite sheet (1a) constitutes the front and back layers, the composite sheet (1b) constitutes the core layer, the production direction of the composite sheet (1a) and the composite sheet (1b). ) Are laminated and bonded so that the production directions are orthogonal to each other.
[0019]
As the wood-based fragments, in addition to wood, those obtained by finely crushing recycled wood waste such as architectural wood waste and factory wood waste into fine particles or fibers can be used. The synthetic resin is not particularly limited, but it is preferable to use a thermoplastic resin such as a polyolefin resin such as polyethylene and polypropylene, a vinyl chloride resin, and an ABS resin. Such a synthetic resin can be used by selecting a soft or hard resin according to the purpose of use of the decorative material base material.
[0020]
The mixing ratio of the wood-based debris to the synthetic resin is about 15% to 85% by weight of the wood-based debris based on the total weight of the wood-based debris and the synthetic resin. When the mixing ratio of the wood-based debris is less than 15% by weight, the feeling of plastic becomes strong, the workability and texture of the composite material sheet are reduced, and the effect of improving the thermal dimensional change is poor. In some cases, problems such as deterioration of strength properties such as brittleness and difficulty in producing a uniform molded product may occur.
[0021]
The bonding of the composite material sheets (1a), (1b), and (1a) laminated in the three layers can be performed using an adhesive. As the adhesive to be used, a thermoplastic adhesive can be used, but a thermosetting resin such as an epoxy resin or a vinyl urethane resin is preferable because an effect of suppressing a change in the thermal dimension of the decorative material base material can be expected. In addition, the composite material sheets (1a), (1b), and (1a) laminated in three layers can be laminated and bonded by heat fusion.
[0022]
The decorative material base material (A) thus formed is formed by laminating and bonding the three composite material sheets (1a), (1b), and (1a) so as to be orthogonal to each other as described above. The disadvantage that the thermal dimensional change in the production direction (extrusion direction) of the composite sheet (1) in the production direction (extrusion direction) by the extrusion molding apparatus is larger than the thermal dimensional change in the direction orthogonal thereto is reduced, and the thermal dimensional stability is improved. It will be.
[0023]
The thickness of the composite material sheet constituting the decorative material base material (A) according to the above embodiment is not limited to 2 mm, and it is preferable to use a material having a thickness of about 0.3 mm to 5 mm. When the thickness is less than 0.3 mm, stable molding of the composite material sheet becomes difficult or the composite material sheet is easily broken. On the other hand, if it exceeds 5 mm, the applied decorative material substrate is limited to a special thick material, and the number of laminated materials is reduced, and the thermal dimensional change rate may not be sufficiently improved.
[0024]
The number of composite material sheets to be laminated is not limited to three, and may be two or more. By setting the number to three or more, the thermal dimensional change rate can be further improved. Further, a plurality of sheets having different thicknesses can be used in combination.
[0025]
In addition, an inorganic filler can be mixed in the composite material sheet. Examples of such an inorganic filler include clay, calcium carbonate, talc, titanium oxide, clay, silica, aluminum hydroxide, and barium sulfate. Then, one or more of these inorganic fillers can be selected and mixed with wood-based debris, synthetic resin, or a mixture of both.
[0026]
Incorporation of the inorganic filler, in addition to the effect of increasing the amount, is useful for increasing the density of the composite material sheet to make it harder or for reducing the rate of thermal dimensional change. It is advisable to mix them in a proportion of not more than parts by weight. If the amount is more than 100 parts by weight, the composite material sheet is brittle and may be easily broken, which is not preferable.
[0027]
Further, a carboxylic acid-modified polyolefin such as a maleic acid-modified polyolefin may be mixed in the composite material sheet. By mixing such a modified polyolefin, the uniform mixing property of the wood-based debris and the synthetic resin at the time of molding can be increased, and the mixing rate of the wood-based debris into the synthetic resin can be increased. High composite sheet can be formed. The modified polyolefin such as the maleic acid-modified polyolefin may be formed by mixing raw materials necessary for forming the modified polyolefin in advance and reacting them during mixing and molding.
[0028]
FIG. 2 shows a decorative material (B) according to an embodiment of the present invention. The decorative material (B) is composed of the decorative material base (A) and a decorative layer (2) formed of a painted veneer provided on the surface of the decorative material base (A). I have. In addition, as the decorative layer (2), resin-impregnated decorative veneer, printed decorative paper, resin-impregnated printed decorative paper, resin printed sheet, and the like can also be used.
[0029]
In such a decorative material (B), since the thermal dimensional change rate of the decorative material base material (A) is reduced, damages such as cracks, cracks, swelling, and the like occur in the decorative layer (2) due to changes in the thermal environment. Can be prevented and the durability is excellent. Further, when the decorative materials (B) are joined to each other and applied, it is possible to prevent swelling and gaps from occurring at the joints due to thermal expansion and thermal contraction.
[0030]
FIG. 3 shows a floor material (C) according to an embodiment of the present invention. In the flooring (C), a number of back grooves (3) opening on the back side are provided in the width direction (transverse direction) on the back side of the decorative material (B), and the cushioning material (4) is provided. ) Is attached. For this reason, flexibility is given compared with the said decorative material (B), the adaptability to a floor base is improved, and it has a soundproofing effect by the action of the back groove (3) and the cushioning material (4). It becomes.
[0031]
As the cushioning material (4), for example, a nonwoven fabric, a resin foam sheet such as a polyurethane foam sheet, a high-density resin sheet mixed with an inorganic filler, or the like can be used.
[0032]
As a modified example of the floor material (C), a floor material having no back groove (3) and only the cushioning material (4) or a back material (4) without the cushioning material (4) is provided. Flooring.
[0033]
FIG. 4 shows a floor material (D) according to another embodiment of the present invention. In the floor material (D), the decorative material (B) is adhered to the surface of a wooden substrate (5). On the back side, a back groove (3) opening to the back side is provided, and further, a cushioning material (4) is adhered and formed.
[0034]
As the wood substrate (5), a plywood, a wood fiber board, a particle board, a laminated material, or a composite material thereof can be used. In particular, since the decorative material base (A) is interposed between the flooring material (D) and the decorative layer (2), it is difficult for the defect of the substrate (5) to appear in the decorative layer (2). Can be blocked. For this reason, as these woody substrates (5), those having poor surface smoothness due to the presence of some defects such as scratches or nodes on the surface, such as softwood plywood or softwood veneer having many such defects are used. Can be.
[0035]
FIG. 5 shows a flooring (E) for heating according to another embodiment of the present invention. This floor material (E) is provided with a hot water pipe housing groove (6) for housing a hot water pipe in a meandering shape on the surface of a substrate (5), and a heat equalizing plate (7) made of an aluminum sheet is provided thereon. Through this, the decorative material (B) shown in FIG. 2 is bonded and integrated to form a floor material for hot water heating. Here, the surface of the floor material (E) is a floor for electric heating in which a heater wire accommodating groove for accommodating an electric heater wire is provided instead of the hot water pipe accommodating groove (6) for passing a hot water pipe. It can also be composed of a material.
[0036]
FIG. 6 shows a floor material (F) for heating according to another embodiment of the present invention. This floor material (F) is configured such that a hot water pipe housing groove (6) for housing a hot water pipe is provided in a meandering manner on the back surface of the decorative material (B) shown in FIG. Here, instead of providing the hot water pipe accommodating groove (6) on the back surface of the decorative material (B), a heater for accommodating an electric heater wire on the surface of the decorative material substrate (A) of the decorative material (B). It can also be configured as a floor material for electric heating provided with a wire accommodating groove.
[0037]
The floor material (E) and the floor material (F) both rise in temperature during heating, but since the thermal dimensional change rate of the decorative material base (A) is small, the decorative layer (2) on the surface ), It is possible to form a durable heating floor material which does not cause any troubles such as cracks and cracks.
[0038]
Embodiment 1
100 parts by weight of a polypropylene resin, 25 parts by weight of calcium carbonate, and 50 parts by weight of wood flour (cypress air-dried sawdust wood flour) are put into a kneading apparatus, heated and kneaded, and then extruded to form a 2 mm thick plate. A woody debris-synthetic resin composite was prepared. Next, the front and back surfaces of the composite material are lightly sanded with a woodworking sander equipped with an 80-mesh abrasive, and two of them are arranged on the front and back layers so that the production direction (extrusion direction) is the longitudinal direction. One sheet is placed on the core layer so that the production direction (extrusion direction) is orthogonal to the core layer, and is bonded and integrated with an aqueous vinyl urethane resin adhesive (application amount 150 g / m2) at a pressure of 7 kg / cm2. Thus, a decorative material base material according to Example 1 was obtained.
[0039]
Next, 80 g / m2 of an ethylene vinyl acetate resin adhesive was applied to the surface of the obtained decorative material base material, and the resulting product was dried by touch, and then a 100 µm thick polyolefin resin decorative sheet was cooled at a pressure of 5 kg / cm2. Was applied with a UV paint to obtain a cosmetic material (a). Next, the thermal dimensional change of the obtained decorative material (a) from 30 ° C. to 80 ° C. was measured in the production direction and the width direction orthogonal thereto, and the thermal dimensional change rate (%) was calculated according to the following equation. Table 1 shows the results.
[0040]
【formula】
Figure 2004181881
[0041]
Embodiment 2
100 parts by weight of a polypropylene resin, 25 parts by weight of calcium carbonate, 70 parts by weight of wood fiber powder (MDF waste material pulverized to 150 mesh or less), and 3 parts by weight of maleic acid-modified low molecular weight polypropylene were heated in the same manner as in Example 1. By kneading and extrusion molding, plate-like wood fragments-synthetic resin composite material having a thickness of 3 mm and a thickness of 1.5 mm were produced, and sanded in the same manner as in Example 1. Next, the composite material having a thickness of 1.5 mm, a thickness of 3 mm, and a thickness of 1.5 mm in the order from the top and a 1.5 mm thickness of the front and back layers have the same production direction (extrusion direction). The composite material having a thickness of 3 mm is disposed on the core layer such that the production direction (extrusion direction) is perpendicular to the production direction of the composite material of the front and back layers. / M2) to obtain a decorative material base material according to Example 2 by cooling at a pressure of 7 kg / cm2.
[0042]
Next, 100 g / m2 of an aqueous urea-SBR adhesive was applied to the surface of the decorative material substrate, and a 0.25 mm-thick wet slice veneer was heated and pressed at 120 ° C for 1 minute at 6 kg / cm2. A UV coating was applied to the surface to perform UV coating to obtain a decorative material (b) according to Example 2. Next, the thermal dimensional change rate of the obtained decorative material (b) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0043]
Embodiment 3
The wood debris-synthetic resin composite material having a thickness of 1.5 mm obtained in Example 2 was laminated in order from the top in the production direction, the direction perpendicular to the production direction, the production direction, and the direction perpendicular to the production direction. In the same manner as described above, a decorative material base material according to Example 3 was obtained. Next, a sliced veneer was adhered to the surface of this decorative material base material in the same manner as in Example 2, and UV coating was performed to obtain a decorative material (C) according to Example 3. Next, the thermal dimensional change rate of the obtained decorative material (c) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0044]
[Comparative Example 1]
Only the polypropylene resin used in Examples 1 to 3 was put into a kneading apparatus, heated and kneaded, and then extruded to obtain a polypropylene resin plate (d) having a thickness of 6 mm according to Comparative Example 1. . Next, the thermal dimensional change of the obtained polypropylene resin plate (d) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0045]
[Comparative Example 2]
A composition in which 25 parts by weight of calcium carbonate was mixed with 100 parts by weight of the polypropylene resin used in Examples 1 to 3 was put into a kneading apparatus in the same manner as in Example 1, heated and kneaded, and then extruded to form a 6 mm thick sheet. A plate-like polypropylene resin plate (e) according to Comparative Example 2 was obtained. Next, the thermal dimensional change of the obtained polypropylene resin plate (e) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0046]
[Comparative Example 3]
The composition of Comparative Example 2 was extruded and molded in the same manner as in Comparative Example 2 to obtain a 2 mm-thick polypropylene resin plate mixed with an inorganic filler. Then, the three resin plates were laminated and bonded in the same manner as described in Example 1 so that the production direction (extrusion direction) of the core layer polypropylene resin plate was orthogonal to the production direction (extrusion direction) of the front and back layer polypropylene resin plates. Thus, a polypropylene resin plate (f) according to Comparative Example 3 was obtained. Next, the thermal dimensional change of the obtained polypropylene resin plate (f) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0047]
[Comparative Example 4]
The composition of Comparative Example 2 was extruded in the same manner as in Comparative Example 2 to obtain a polypropylene resin plate mixed with an inorganic filler having a thickness of 1.5 mm and a thickness of 3 mm. Then, in the same manner as in Example 2, the resin plate was 1.5 mm thick, 3 mm thick, 1.5 mm thick in order from the top, and the 1.5 mm thick resin plate on the front and back layers and the core layer. The three resin plates having a thickness of 3 mm were arranged so that their production directions were orthogonal to each other, and these three resin plates were laminated and bonded in the same manner as in Example 2 to obtain a polypropylene resin plate (g) according to Comparative Example 4. . Next, the thermal dimensional change of the obtained polypropylene resin plate (g) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0048]
[Comparative Example 5]
The composition described in Example 1 was extruded and molded in the same manner as in Example 1 to prepare a 6 mm-thick plate-like wood fragment-synthetic resin composite. In the same manner as in Example 1, a 100 μm thick polyolefin resin decorative sheet similar to that of Example 1 was adhered to the surface of this composite material to obtain a decorative material (H) according to Comparative Example 5. Next, the thermal dimensional change rate of the obtained decorative material (h) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0049]
[Comparative Example 6]
The composition described in Example 1 was extruded and molded in the same manner as in Example 1, and a plate-like wood fragment-synthetic resin composite material having a thickness of 2 mm was produced in the same manner as in Example 1. Next, the three composite materials were laminated so that the production direction (extrusion direction) was the same direction, and adhered in the same manner as in Example 1 to obtain a decorative material base material according to Example 1. Next, a decorative sheet of a polyolefin resin having a thickness of 100 μm similar to that of Example 1 was adhered to the surface of the decorative material base in the same manner as in Example 1 to obtain a decorative material (R) according to Comparative Example 6. Next, the thermal dimensional change rate of the obtained decorative material (i) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0050]
[Comparative Example 7]
The composition described in Example 2 was extruded and molded in the same manner as in Example 2 to prepare a 6 mm-thick plate-like wood fragment-synthetic resin composite. A decorative veneer similar to that of Example 2 was adhered to the surface of this composite material in the same manner as in Example 2 to obtain a decorative material (nu) according to Comparative Example 7. Next, the thermal dimensional change rate of the obtained decorative material (N) was measured and calculated in the same manner as in Example 1. Table 1 shows the results.
[0051]
[Table 1]
Figure 2004181881
[0052]
From Table 1, the two conditions of putting wood fragments into the composition of the composite material and laminating and bonding a plurality of composite materials so that the production directions are orthogonal to each other produce a synergistic effect, and in the production direction of the composite material, It can be seen that the thermal dimensional change rate in the direction (width direction) orthogonal to the direction is small.
[0053]
【The invention's effect】
As described above, according to the decorative material substrate according to the first aspect of the present invention, a plurality of wood-based debris-synthetic resin composite sheets obtained by mixing wood-based debris with a synthetic resin are produced in a direction in which the composite material sheet is produced. Since they are laminated and integrated so as to be orthogonal to each other, it is possible to obtain a decorative material base material in which the thermal dimensional change rate in the direction orthogonal to the production direction is suppressed to a small extent. It is possible to prevent the occurrence of defects and defects that are likely to occur in the decorative layer and joints due to thermal expansion and contraction.
[0054]
According to the decorative material base material according to the second aspect of the present invention, since the thickness of the wood-based debris-synthetic resin composite material sheet is 0.3 mm to 5 mm, a wide range of decorative materials from thin to thick. Since the base material can be formed and the number of laminations can be increased, it is possible to obtain a decorative material base material in which the thermal dimensional change rate is further suppressed and homogenized.
[0055]
According to the decorative material base material according to the third aspect of the present invention, since the inorganic filler is mixed into the wood-based debris-synthetic resin composite sheet, the thermal dimensional change rate is further reduced due to the effect of filling the inorganic filler. Thus, a decorative material base material can be obtained.
[0056]
According to the decorative material substrate according to the fourth aspect of the present invention, since the carboxylic acid-modified polyolefin is mixed in the wood-based debris-synthetic resin composite sheet, the mixing state of the wood-based debris and the synthetic resin is further improved. A cosmetic material substrate can be obtained, and the thermal dimensional change rate can be further improved.
[0057]
According to the decorative material according to the fifth aspect of the present invention, a decorative layer made of a decorative veneer, a decorative paper, a decorative resin sheet, or the like is provided on the surface side of the decorative material base according to any one of the first to fourth aspects. In addition to enhancing the decorative protection of the surface, it is possible to prevent defects such as cracks and peeling from occurring in the decorative layer due to heat change.
[0058]
According to the decorative material according to the sixth aspect of the present invention, since the substrate is bonded to the back surface side of the decorative material base, it is possible to increase various strengths of the decorative material itself in addition to the effects of the decorative material base. In addition, even if the substrate is inferior in surface state, such as having a slightly poor surface smoothness, the effect can be formed in a good appearance without the effect appearing in the decorative layer.
[0059]
According to the flooring material according to the seventh aspect of the present invention, the cushioning material is adhered to the back surface side of the decorative material according to the fifth aspect, and according to the flooring material according to the eighth aspect of the invention. Since the cushioning material is adhered to the back surface side of the substrate described in (1), in addition to the effect of the decorative material, the soundproofing property and the adaptability to the floor base can be improved in any case.
[0060]
According to the floor material according to the ninth aspect of the present invention, in the invention according to the seventh aspect, the decorative material has a large number of grooves that are open to the back side, and according to the floor material according to the tenth aspect, Since a large number of grooves are formed on the back surface side of the substrate, the soundproofing and the familiarity with the floor substrate can be further improved in any case.
[0061]
According to the flooring material of the eleventh aspect of the present invention, electric or hot water heating is provided inside the decorative material base of the decorative material according to the fifth aspect or inside the decorative material substrate according to the sixth aspect. Since the equipment is built in, it should be a floor material suitable for heating that has a small thermal dimensional change rate even at the time of temperature rise and prevents problems that easily occur at the joint between the decorative layer and the floorboard etc. Can be.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a decorative material base material (A) according to an embodiment of the present invention.
FIG. 2 is a sectional view showing a decorative material (B) according to an embodiment of the present invention.
FIG. 3 is a sectional view showing a floor material (C) according to an embodiment of the present invention.
FIG. 4 is a sectional view showing a floor material (D) according to another embodiment of the present invention.
FIG. 5 is a sectional view showing a floor material (E) according to another embodiment of the present invention.
FIG. 6 is a sectional view showing a floor material (F) according to another embodiment of the present invention.
[Explanation of symbols]
(A) Decorative material substrate (B) Decorative materials (C) to (F) Floor material (1) (1a) (1b) Composite material sheet (2) Decorative layer (3) Back groove (4) Buffer material (5) ) Substrate (6) Hot water pipe accommodation groove (7) Heat equalizing plate

Claims (11)

合成樹脂に木質系砕片を混入してなる複数枚の木質系砕片−合成樹脂複合材シートを、該複合材シートの生産方向が互いに直交するように積層一体化してなることを特徴とする化粧材基材。Cosmetic material characterized in that a plurality of wood-based debris-synthetic resin composite sheets obtained by mixing wood-based debris into a synthetic resin are laminated and integrated so that the production directions of the composite sheets are orthogonal to each other. Base material. 木質系砕片−合成樹脂複合材シートの厚さが、0.3mm〜5mmであることを特徴とする請求項1に記載の化粧材基材。2. The decorative material substrate according to claim 1, wherein the thickness of the wood-based debris-synthetic resin composite sheet is 0.3 mm to 5 mm. 3. 木質系砕片−合成樹脂複合材シートに無機質充填材が混入されてなることを特徴とする請求項1又は2に記載の化粧材基材。The decorative material substrate according to claim 1 or 2, wherein an inorganic filler is mixed into the wood-based debris-synthetic resin composite sheet. 木質系砕片−合成樹脂複合材シートに、カルボン酸変性ポリオレフィンが混入されてなることを特徴とする請求項1乃至3に記載の化粧材基材。The decorative material substrate according to any one of claims 1 to 3, wherein a carboxylic acid-modified polyolefin is mixed into the wood-based debris-synthetic resin composite sheet. 請求項1乃至4に記載の化粧材基材の表面側に、化粧単板、化粧紙、化粧樹脂シート等からなる化粧層を設けてなることを特徴とする化粧材。A decorative material comprising a decorative layer made of a decorative veneer, decorative paper, a decorative resin sheet, or the like, provided on the surface side of the decorative material base material according to any one of claims 1 to 4. 化粧材基材の裏面側に基板が接着されてなることを特徴とする請求項5に記載の化粧材。The decorative material according to claim 5, wherein a substrate is adhered to a back surface side of the decorative material base material. 請求項5に記載の化粧材の裏面側に、緩衝材が貼着されてなることを特徴とする床板。A floorboard comprising a cushioning material adhered to the back surface of the decorative material according to claim 5. 請求項6に記載の基板の裏面側に、緩衝材が貼着されてなることを特徴とする床板。A floor plate, wherein a cushioning material is adhered to the back surface of the substrate according to claim 6. 化粧材に、裏面側に開口する多数の溝が形成されてなることを特徴とする請求項7に記載の床材。The floor material according to claim 7, wherein the decorative material has a large number of grooves formed on the back side thereof. 基板に裏面側に開口する多数の溝が形成されてなることを特徴とする請求項8に記載の床材。9. The flooring material according to claim 8, wherein a number of grooves are formed in the substrate and open to the back side. 請求項5に記載の化粧材基材の内部、又は請求項6に記載の基板の内部に、電気式又は温水式の暖房装置が組み込まれてなることを特徴とする床材。A flooring material, wherein an electric or hot water type heating device is incorporated into the interior of the decorative material substrate according to claim 5 or the interior of the substrate according to claim 6.
JP2002354023A 2002-12-05 2002-12-05 Substrate for decorative laminate, decorative laminate using the substrate, and flooring material using the decorative laminate Pending JP2004181881A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011173285A (en) * 2010-02-23 2011-09-08 Panasonic Electric Works Co Ltd Woody plate
CN108858519A (en) * 2017-05-16 2018-11-23 杨建忠 For the sandwich layer of wood block, wood block and its manufacturing method
JP2018536567A (en) * 2015-11-30 2018-12-13 オムヤ インターナショナル アーゲー Calcium carbonate for particle board
WO2021166914A1 (en) * 2020-02-17 2021-08-26 古河電気工業株式会社 Resin composite material and resin molded body

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011173285A (en) * 2010-02-23 2011-09-08 Panasonic Electric Works Co Ltd Woody plate
JP2018536567A (en) * 2015-11-30 2018-12-13 オムヤ インターナショナル アーゲー Calcium carbonate for particle board
CN108858519A (en) * 2017-05-16 2018-11-23 杨建忠 For the sandwich layer of wood block, wood block and its manufacturing method
WO2021166914A1 (en) * 2020-02-17 2021-08-26 古河電気工業株式会社 Resin composite material and resin molded body

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