JP4612224B2 - Floor material, manufacturing method thereof, and floor surface using the floor material - Google Patents

Floor material, manufacturing method thereof, and floor surface using the floor material Download PDF

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JP4612224B2
JP4612224B2 JP2001143184A JP2001143184A JP4612224B2 JP 4612224 B2 JP4612224 B2 JP 4612224B2 JP 2001143184 A JP2001143184 A JP 2001143184A JP 2001143184 A JP2001143184 A JP 2001143184A JP 4612224 B2 JP4612224 B2 JP 4612224B2
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decorative sheet
flooring
slope
decorative
floor
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JP2002339556A (en
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康夫 中井
孝志 土井
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、床材同士の接合部において、キャスター等の移動時に衝撃等が加わっても化粧シートの剥がれが生じ難く、かつ、奥行感のある溝部を有する意匠性に優れた床材及びこれを用いた床面に関する。
【0002】
【従来の技術】
従来、化粧シートを木質系基材に貼着し、実加工を施してなる床材が一戸建て住宅や集合住宅に使用されている。そして、このような床材は意匠性を考慮して実加工を施した化粧シート側角部に面取り加工が施されている。すなわち、実加工が施された個所は床材同士の接合部となる個所であり、床材同士の接合部において溝部が形成されるように構成され、意匠性の向上を図っている。
【0003】
そして、上記のような構成からなる床材は、床材同士の接合部により形成された溝部において、木質系基材が露出することになり、化粧シートと木質系基材との間の色調差から生じる違和感をなくして意匠性の向上を図るために、通常、この溝部に化粧シートに近似した色合いの塗料を塗工して化粧シートと木質系基材との色調差をなくしていた。また、上記した溝部への塗料の塗工は木質系基材の露出した部分から水が浸透して膨れが発生するのを防止するためのものでもあった。特に木質系基材として中密度繊維板(MDF)を用いた場合に顕在化する。
【0004】
このように構成された床材は、前記溝部の違和感をなくすという意味での意匠性向上には寄与するものの、奥行感に乏しい溝部とならざるを得ず、奥行感のある溝部を有する床材が要望されていたし、耐水性においてさらなる性能向上が要望されていた。また、別の問題として、溝部において化粧シートと木質系基材の接着界面が露出するために、キャスター等の移動時に前記接着界面に衝撃等の外力が加わり、化粧シートが剥がれることがあり、これについても化粧シートの剥がれ難い床材が要望されていた。
【0005】
さらにまた別の問題として、木質系基材に合板を用いた場合には、溝部に合板の繊維のけば立ちがあるために、靴下やストッキング等の繊維が引っ掛かり伝線するといった問題や拭き掃除をすると布の繊維が溝部に残り見苦しいといった問題も内在していた。
【0006】
【発明が解決しようとする課題】
そこで本発明は、上記問題に鑑みてなされたものであり、その目的とするところは、耐水性に優れ、キャスター等の移動時に衝撃等の外力が加わっても化粧シートが剥がれ難く、また、靴下やストッキング等の繊維が引っ掛かり伝線などが生じ難く、さらに、奥行感のある意匠性に優れた溝部を有する床材及びこれを用いた床面を提供することにある。
【0007】
【課題を解決するための手段】
本発明者等は、上記目的を達成するために、請求項1記載の発明は、矩形状の木質系基材の一方の面の四周縁部が略一致するように化粧シートを貼着してなる化粧板を四周縁部斜面形成手段により前記化粧シートが貼着された側の四周縁部のみに斜面を形成してなる床材の製造方法であって、前記四周縁部斜面形成手段が円周方向に凹部を有すると共に該凹部の軸方向の両端部であって円周方向に斜面が形成された表面形状からなる金属製斜面形成プレスロールとフラットな表面形状からなる金属製フラットプレスロール間を前記化粧シートを貼着した前記化粧板の前記化粧シート側が金属製斜面形成プレスロール側に位置するように長尺方向および短尺方向のいずれの方向も通して四周縁部に斜面を形成する、ないし、四周縁部に斜面の形状を有するプレス板で前記化粧シートを貼着した前記化粧板の前記化粧シート側からプレスして化粧シート側の四周縁部に斜面を形成する、のいずれかの方法であることを特徴とするものである。また、請求項2記載の発明は、矩形状の木質系基材の一方の面に化粧シートが貼着された床材であって、請求項1記載の製造方法により、前記化粧シートが貼着された側の四周縁部に前記化粧シートで被覆された斜面を形成したことを特徴とするものである。
【0008】
また、請求項3記載の発明は、請求項2記載の床材を少なくとも用い、複数枚の床材を敷設することにより形成される床面であって、前記床材同士の接合部が化粧シートで被覆された溝部からなることを特徴とするものである
【0009】
上記のように構成することにより、耐水性に優れ、キャスター等の移動時に衝撃等の外力が加わっても、化粧シートが剥がれ難く、奥行感のある意匠性に優れた溝部を有する床材及び床面とすることができる。また、木質系基材に合板を用いた場合においても靴下やストッキング等の繊維が引っ掛かり伝線などの生じ難い溝部を有する床材及び床面とすることができる
【0010】
【発明の実施の形態】
上記の本発明について、図面等を用いて以下に詳述する。
図1は本発明にかかる床材の一実施例を示す斜視図、図2は本発明にかかる床材の接合部の拡大断面図、図3は本発明にかかる床材を敷設した床面の一実施例を示す要部平面図、図4は本発明にかかる床材の化粧シート側四周縁部に斜面を形成する方法を説明する概略図、図5は図4のX−X線の断面図であり、図中の1は床材、2は木質系基材、3は化粧シート、4は斜面、5は雌実、6は雄実、7は溝部、8は角部床材、9は端部床材、10は床面、α,βは金属製プレスロールをそれぞれ示す。
【0011】
図1は本発明にかかる床材の一実施例を示す斜視図であって、床材1は矩形状木質系基材2の一方の面に接着剤(図示せず)を介して木目模様の化粧シート3が貼着されると共に、化粧シート3が貼着された側の四周縁部にアール状の斜面4を形成したものである。このように構成した床材1同士を接合した際に床材1同士の接合部において化粧シート3で被覆された溝部7(図2参照)が形成されるように構成されている。また、前記床材1の側部には必要に応じて前記木質系基材2に実加工が施されて雌実5及び雄実6が形成され、前記雌実5と雄実6とを嵌合して床材同士を接合できるように構成されている。
【0012】
図2は本発明にかかる床材の接合部の拡大断面図であって、床材1同士が木質系基材2に設けられた雌実5と雄実6とで嵌合されると共に床材1同士の接合部の化粧シート3側に化粧シート3で被覆された溝部7が形成されている。前記溝部7は化粧シート3で全面が被覆された構成からなるために、木質系基材2と化粧シート3との接着界面が露出することがなく、キャスター等の移動時に前記溝部7に衝撃等の外力が加わっても化粧シートが剥がれ難い。また、前記溝部7が化粧シート3で完全に被覆されているために、水が木質系基材3に浸透することがなく、木質系基材3として中密度繊維板(MDF)を用いた場合にも膨れが発生し難い。また、前記溝部7において木質系基材3が露出しない構造となっているために、たとえば、木質系基材3に切削加工により繊維の毛羽立ちが激しい合板を用いても靴下やストッキング等の繊維が引っ掛かることがなく、結果として靴下やストッキング等に伝線が生じ難い。さらに、前記溝部7を表出面と同じ前記化粧シート2で形成したことにより、奥行感のある意匠性に優れた溝部とすることができる。
【0013】
図3は本発明にかかる床材を敷設した床面の一実施例を示す要部平面図であって、床面10は部屋の隅部に複数枚の床材を敷設したものである。図3において網点で示した部分が床材同士の接合部であって図2に示すような溝部7を形成した個所であり、本発明の床材1は図3に示すように床面の角部及び端部を除く個所に使用される。すなわち、図3上、本発明の床材1は4枚使用され、角部及び端部には角部床材8及び端部床材9が合計5枚使用されている。当然のことながら、角部床材8及び端部床材9は連続する二周縁部及び三周縁部に化粧シート3で被覆された斜面4が形成されている。
【0014】
次に、本発明の床材1を構成する材料について説明する。まず、木質系基材2について説明する。
前記木質系基材2としては、合板(LVLを含む)、中密度繊維板(MDF)、高密度繊維板(HDF)、パーティクルボード、単板、木材、集成材等のいずれか、ないし、これらを適宜積層した積層材を用いることができる。
【0015】
次に、本発明の床材1を構成する化粧シート3について説明する。前記化粧シート3としては、これにより床材としての意匠を付与する、及び/ないし、床材に要求される諸物性、特に表面物性を付与するために設けられるものである。前記化粧シート3を構成するシートとしては特に限定されるものではなく、紙や各種の合成樹脂製シートの単体、ないし、これらの積層体が適当である。また、紙や各種の合成樹脂製シートは白色ないし無色透明なシートに限ることはなく、顔料等にて着色したシートであっても構わない。さらに、合成樹脂製シートにあっては無延伸の状態、あるいは、1軸ないし2軸方向に延伸した状態等いずれの状態のシートであってもよい。なお、紙や各種の合成樹脂製シートは、必要に応じて一方の面ないし両方の面に、コロナ放電処理、プラズマ処理、オゾン処理等の易接着処理を施してもよい。
【0016】
また、前記化粧シート3には、床材としての意匠を付与する一つの手段として、たとえば、木目模様等の印刷が施されている。この印刷に用いるインキとしては、被印刷シートの材質により適宜樹脂系を選択すればよいが、ビヒクルとしては、塩素化ポリエチレン,塩素化ポリプロピレン等の塩素化ポリオレフィン、ポリエステル、イソシアネートとポリオールからなるポリウレタン、ポリアクリル、ポリ酢酸ビニル、ポリ塩化ビニル、塩化ビニル−酢酸ビニル共重合体、セルロース系樹脂、ポリアミド系樹脂等の1種ないし2種以上混合して用い、これに顔料、溶剤、各種補助剤等を加えてインキ化したものを用いることができる。また、前記化粧シート3には、エンボス加工等により凹凸模様を必要に応じて設けることができ、床材としての意匠性を向上させることができる。たとえば、木目模様等の導管部に設けられる導管溝などである。
【0017】
また、前記化粧シート3には、床材として要求される物性、特に耐擦傷性、耐摩耗性、耐汚染性等の表面物性を付与するために、通常、前記化粧シート3の最表面に表面保護層が設けられる。この表面保護層を形成する樹脂としては、たとえば、エポキシ系樹脂、アクリル系樹脂、ウレタン系樹脂、アミド系樹脂、エステル系樹脂、あるいは、ポリエチレン,ポリプロピレン,ポリブテン,ポリブタジエン,ポリイソプレン等のポリオレフィンの1種ないしエチレン,プロピレン,ブテン,ブタジエン,イソプレン等のオレフィンの2種以上の共重合体、あるいは、炭素数が4以上のαオレフィンの共重合体(線状低密度ポリエチレン)、エチレン−酢酸ビニル共重合体、エチレン−ビニルアルコール共重合体、あるいは、これらの1種ないしそれ以上からなる混合樹脂等を挙げることができる。そして、この表面保護層の形成方法としては、たとえば、上記樹脂を溶液化するなり、加熱溶融するなりして、グラビア印刷法、ロールコート法、あるいは、押出し塗工法等の周知の塗工手段を適宜用いて塗工することにより形成することができるし、また、上記樹脂をフィルム化してドライラミネーション法等の周知の積層法で積層することにより形成することができる。
【0018】
しかし、より好ましくは、前記表面保護層を電離放射線硬化型樹脂で形成するのがよい。この理由としては、表面硬度が硬く、かつ、生産性に優れるためである。電離放射線硬化型樹脂とは、電離放射線を照射することにより架橋重合反応を起こし3次元の高分子構造に変化する樹脂である。電離放射線は、電磁波または荷電粒子線のうち分子を重合、架橋し得るエネルギー量子を有するものを意味し、可視光線、紫外線(近紫外線、真空紫外線等)、X線、電子線、イオン線等がある。通常は紫外線や電子線が用いられ、紫外線としては超高圧水銀灯、高圧水銀灯、低圧水銀灯、カーボンアーク灯、ブラックライト蛍光灯、メタルハライドランプ灯の光源が使用できる。紫外線の波長としては、通常1900〜3800Åの波長域が主として用いられる。また、電子線としてはコックロフトワルトン型、バンデグラフト型、共振変圧器型、絶縁コア変圧器型、あるいは、直線型、ダイナミトロン型、高周波型等の各種電子線加速器を用い、100〜1000KeV、好ましくは100〜300KeVのエネルギーをもつ電子を照射するものを使用できる。
【0019】
電離放射線硬化型樹脂としては、分子中に、(メタ)アクリロイル基、(メタ)アクリロイルオキシ基等のラジカル重合性不飽和基、又はエポキシ基等のカチオン重合性官能基を有する単量体、プレポリマー又はポリマー(以下、これらを総称して化合物と呼称する)からなる。これら単量体、プレポリマー、及び、ポリマーは単体で用いるか、あるいは、複数種混合して用いる。なお、本明細書で(メタ)アクリレートとはアクリレートまたはメタアクリレートの意味で用いる。
【0020】
ラジカル重合性不飽和基を有するプレポリマーとしては、ポリエステル(メタ)アクリレート、ウレタン(メタ)アクリレート、エポキシ(メタ)アクリレート、メラミン(メタ)アクリレート、トリアジン(メタ)アクリレート、ポリビニルピロリドン等が挙げられる。このプレポリマーは、通常、分子量が10000程度以下のものが用いられる。分子量が10000を超えると硬化した樹脂層の耐擦傷性、耐摩耗性、耐薬品性、耐熱性等の表面物性が不足する。上記のアクリレートとメタアクリレートは共用し得るが、電離放射線での架橋硬化速度という点ではアクリレートの方が速いため、高速度、短時間で能率よく硬化させるという目的ではアクリレートの方が有利である。
【0021】
また、カチオン重合性官能基を有するプレポリマーとしては、ビスフェノール型エポキシ樹脂、ノボラック型エポキシ樹脂、脂環型エポキシ樹脂等のエポキシ系樹脂、脂肪族系ビニルエーテル、芳香族系ビニルエーテル、ウレタン系ビニルエーテル、エステル系ビニルエーテル等のビニルエーテル系樹脂、環状エーテル化合物、スピロ化合物等のプレポリマーが挙げられる。
【0022】
電離放射線硬化型樹脂は電子線を照射すれば十分に硬化するが、紫外線を照射して硬化させる場合には、増感剤として光重合開始剤を添加することができる。ラジカル重合性不飽和基を有する樹脂系の場合の光重合開始剤としては、アセトフェノン類、ベンゾフェノン類、チオキサントン類、ベンゾイン、ベンゾインメチルエーテル、ミヒラーベンゾインベンゾエート、ミヒラーケトン、ジフェニルサルファイド、ジベンジルジサルファイド、ジエチルオキサイド、トリフェニルビイミダゾール、イソプロピル−N,N−ジメチルアミノベンゾエート等を単独ないし混合して用いることができる。また、カチオン重合性官能基を有する樹脂系の場合は、芳香族ジアゾニウム塩、芳香族スルホニウム塩、メタロセン化合物、ベンゾインスルホン酸エステル、フリールオキシスルホキソニウムジアリルヨードシル塩等の単独ないし混合物として用いることができる。なお、これら光重合開始剤の添加量は、一般に電離放射線硬化型樹脂100重量部に対して、0.1〜10重量部程度である。また、電離放射線硬化型樹脂で保護層を形成する方法としては、たとえば、電離放射線硬化型樹脂を溶液化し、グラビアコート法、ロールコート法等の周知の塗工法で塗工することにより形成することができる。塗工量としては、固形分として概ね5〜30g/m2が適当であり、より好ましくは、15〜25g/m2である。
【0023】
また、電離放射線硬化型樹脂から形成された表面保護層に、より一層耐擦傷性、耐摩耗性を付与する場合には、粉末状の酸化アルミニウム、炭化珪素、二酸化珪素、チタン酸カルシウム、チタン酸バリウム、マグネシウムパイロボレート、酸化亜鉛、窒化珪素、酸化ジルコニウム、酸化クロム、酸化鉄、窒化硼素、ダイアモンド、金剛砂、ガラス繊維等の研磨材を加えることにより達成することができる。研磨材の電離放射線硬化型樹脂100重量部に対する割合は、1〜80重量部が適当である。
【0024】
また、上記した木質系基材2に上記した化粧シート3を貼着する接着剤としては、前記化粧シート3の接着剤と接する面を構成する材料により適宜選択する必要があるが、酢酸ビニル系樹脂、尿素樹脂、ウレタン系樹脂等の周知の接着剤から選択して用いればよい。
【0025】
また、床材1の化粧シート3側の四周縁部に形成する化粧シート3で被覆された斜面4の形成方法としては、種々の形成方法を採ることができるが、例示するならば、木質系基材に化粧シートを貼着して後に、▲1▼図4、図5に示すように円周方向に凹部を有すると共に該凹部の軸方向の両端部に断面アール状の斜面が円周方向に形成された表面形状からなる金属製プレスロールαとフラットな表面形状からなる金属製プレスロールβ間を化粧シート側が金属製プレスロールα側に位置するように通して、化粧シート側の端部に斜面を形成する方法(金属製プレスロールα、βはいずれも駆動ロールである)ないし▲2▼斜面の形状を有するプレス板で化粧シート側からプレスして化粧シート側の端部に斜面を形成する方法、あるいは、▲3▼木質系基材に化粧シートを貼着して後に、木質系基材の化粧シートとの界面近傍を斜面形状に切削し、必要に応じて切削面に接着剤を塗工し、化粧シートを切削面に貼着して化粧シート側の端部に斜面を形成する方法、あるいは、▲4▼木質系基材の一方の面の端部をテノーナー、ルーター等で斜面形状に切削して後に、平面及び斜面からなる前記一方の面に化粧シートを貼着して化粧シート側の端部に斜面を形成する方法等を挙げることができる。上記形成方法は組合わせて用いてもよく、床材の長尺方向と短尺方向の斜面を異なる形成方法で形成してもよい。また、木質系基材に化粧シートを貼着する方法としては、ソフトロールラミネート法、真空プレス法、ビーズショット(BS)法、ラッピング法等を挙げることができる。なお、今までの説明においては、床材1の化粧シート3側の四周縁部に形成する斜面をアール状としてきたが、斜面の形状はこれに限ることはなく、たとえば、床材同士を接合して溝部としたときにV字状、あるいは、U字状となる斜面であってもよい。
【0026】
【実施例】
次に、本発明について、以下に実施例を挙げてさらに詳しく説明する。
〔化粧シートの製造〕
両面コロナ放電処理を施した60μmのオレフィン系樹脂シートの一方の面にアクリル−ウレタン樹脂(アクリルポリオール100重量部にヘキサメチレンジイソシアネート5重量部を添加した樹脂)溶液をグラビア塗工法で固形分が2g/m2となるように塗工して印刷用プライマー層を形成し、該印刷用プライマー層上にアクリル−ウレタン樹脂(アクリルポリオール100重量部にヘキサメチレンジイソシアネート5重量部を添加した樹脂)からなる印刷インキを用いてグラビア印刷法でベタ柄印刷層と絵柄印刷層とを順次印刷して木目模様の印刷層を形成し、さらに前記印刷層上に固形分が10g/m2となるようにウレタン系接着剤を塗工して接着剤層を形成し、該接着剤層上にプロピレン系樹脂を80μm厚さとなるようにTダイ押出機で加熱溶融押出しして透明樹脂層を形成した。その後に、前記透明樹脂層面にコロナ放電処理を施すと共に該コロナ放電処置面にアクリル−ウレタン樹脂(アクリルポリオール100重量部にヘキサメチレンジイソシアネート5重量部を添加した樹脂)溶液をグラビア塗工法で固形分が1g/m2となるように塗工して表面保護層用プライマー層を形成し、そして該表面保護層用プライマー層上にウレタンアクリレート系電子線硬化型樹脂をロールコート法で固形分が15g/m2となるように塗工・乾燥して未硬化の電子線硬化型樹脂層を形成し、該未硬化の電子線硬化型樹脂層に酸素濃度200ppm以下の環境下で電子線(加速電圧125KeV、5Mrad)を照射して硬化させて電子線硬化型樹脂からなる表面保護層を形成すると共に、該表面保護層側から版深50μmの木目導管状エンボス版でエンボス加工を行って、木目導管の凹凸模様を形成した化粧シートを作製した。
【0027】
〔木質系基材と化粧シートとの貼合〕
12mm厚さの合板の一方の面に接着剤(中央理化工業製:リカボンドBA−10A/BA−10B=100/5)をウエット状態で6g/尺2となるように塗工し、上記で作製した化粧シートを貼合すると共に冷圧プレス機(プレス圧:2kg/cm2、プレス時間:1時間)にてプレスして化粧板を作製した。
【0028】
実施例1
上記で作製した化粧板を所望の矩形状寸法に裁断し、テノーナーを用いて4側面に実加工を施すと共に、図4,図5に示すような斜面形成装置を用い、加工速度20m/minで実加工を施した化粧板を長尺方向、短尺方向と順に加工して、0.5mmアールの斜面を形成して本発明の床材を得た。
【0029】
比較例1
上記で作製した化粧板を所望の矩形状寸法に裁断し、テノーナーを用いて4側面に実加工を施して比較例1とする床材を得た。
【0030】
比較例2
上記で作製した化粧板を所望の矩形状寸法に裁断し、テノーナーを用いて4側面に実加工を施すと共に、化粧シート側四周縁部に0.5mmアールの面取り加工を行うと共に面取り加工面にウレタン系水性塗料を塗工・乾燥・固化して比較例2とする床材を得た。
【0031】
上記で作製した実施例1、及び、比較例1の床材をそれぞれ段差が0.2〜0.3mm生じるように接合し、接合部に対して下記する化粧シートの剥がれ試験を行い、その評価結果を表1に示した。
【0032】
【表1】

Figure 0004612224
※化粧シートの剥がれ試験
断面2cm角、長さ4cmの長方体形状のステンレス製治具を長辺側の一面が床材面に接触するように置き、床材の接合部を自重で横断するように往復させ、化粧シートが木質系基材から剥がれるまでの往復回数を評価した。
【0033】
上記で作製した実施例1、及び比較例2の床材をそれぞれ接合し、接合部に対して下記する繊維の引っ掛かり試験を行い、その評価結果を表2に示した。
【0034】
【表2】
Figure 0004612224
※繊維の引っ掛かり試験
住居用ワイパー〔花王(株)製クイックルワイパー〕を用いて、床材接合部にそって床材表面を擦り、ワイパーの繊維が接合部に付着したときの回数を評価した。
【0035】
上記評価結果からも明らかなように、本発明は、化粧シートが剥がれ難く、また、繊維が引っ掛かり難い床材である。
【0036】
【発明の効果】
今まで縷々説明してきたように、本発明によれば、木質系基材に化粧シートを貼着した構成からなる床材の化粧シートが貼着された側の四辺に、床材同士の接合部において化粧シートで被覆された溝部が形成されるように斜面を形成したことにより、キャスター等の移動時に前記溝部に衝撃等の外力が加わっても化粧シートが剥がれ難く、また、水が木質系基材に浸透して膨れが発生し難く、また、靴下やストッキング等の繊維が引っ掛かって靴下やストッキング等に伝線が生じ難く、さらにまた、奥行感のある意匠性に優れた溝部を有する床材とすることができる。
【図面の簡単な説明】
【図1】 本発明にかかる床材の一実施例を示す斜視図である。
【図2】 本発明にかかる床材の接合部の拡大断面図である。
【図3】 本発明にかかる床材を敷設した床面の一実施例を示す要部平面図である。
【図4】 本発明にかかる床材の化粧シート側四周縁部に斜面を形成する方法を説明する概略図である。
【図5】 図4のX−X線の断面図である。
【符号の説明】
1 床材
2 木質系基材
3 化粧シート
4 斜面
5 雌実
6 雄実
7 溝部
8 角部床材
9 端部床材
10 床面
α,β 金属製プレスロール[0001]
BACKGROUND OF THE INVENTION
The present invention provides a flooring material excellent in design having a groove portion having a depth feeling, in which a decorative sheet is hardly peeled off even when an impact or the like is applied at the time of movement of a caster or the like at a joint portion between flooring materials. It relates to the floor used.
[0002]
[Prior art]
Conventionally, flooring materials obtained by sticking a decorative sheet to a wooden base material and applying actual processing have been used for detached houses and apartment houses. Such a flooring is chamfered at the corner portion of the decorative sheet that has been subjected to actual processing in consideration of design properties. That is, the part where the actual processing is performed is a part that becomes a joint part between floor materials, and is configured such that a groove part is formed at the joint part between floor materials, thereby improving the design.
[0003]
And the floor material which consists of the above structures, in the groove part formed by the joint part of floor materials, a wooden base material will be exposed, and a color tone difference between a decorative sheet and a wooden base material In order to eliminate the sense of incongruity caused by this and improve the design, usually, the groove portion is coated with a paint having a hue similar to that of the decorative sheet to eliminate the color tone difference between the decorative sheet and the wooden substrate. Further, the coating of the coating material in the groove part described above was also for preventing water from penetrating from the exposed part of the wooden base material and causing swelling. In particular, when a medium density fiberboard (MDF) is used as a woody base material, it becomes apparent.
[0004]
Although the floor material configured in this way contributes to the improvement of the design in the sense of eliminating the uncomfortable feeling of the groove part, it must be a groove part with a poor depth feeling, and the floor material has a groove part with a feeling of depth. There has been a demand for further improvement in water resistance. As another problem, since the adhesive interface between the decorative sheet and the wooden base material is exposed in the groove, an external force such as an impact is applied to the adhesive interface when the caster is moved, and the decorative sheet may be peeled off. In addition, there has been a demand for a flooring that is difficult to peel off the decorative sheet.
[0005]
As another problem, when plywood is used for the wood base material, there is a problem that fibers such as socks and stockings are caught and wiped because there is flaking of plywood fibers in the groove. Then, the problem that the fiber of the cloth remained in the groove portion was unclear.
[0006]
[Problems to be solved by the invention]
Therefore, the present invention has been made in view of the above problems, and the object thereof is excellent in water resistance, and even if an external force such as an impact is applied during movement of a caster or the like, the decorative sheet is hardly peeled off, and socks It is another object of the present invention to provide a flooring material having a groove portion having excellent design properties with a sense of depth, and a floor surface using the same.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the inventors of the present invention attach a decorative sheet so that the four peripheral edges of one surface of a rectangular wooden base material substantially coincide with each other. The decorative sheet is formed by forming a slope only on the four peripheral edge portions on the side where the decorative sheet is pasted by the four peripheral edge slope forming means, and the four peripheral edge slope forming means is a circle. Between the metal flat press roll having a flat surface shape and a metal slope-forming press roll having a surface shape having a concave portion in the circumferential direction and having axially opposite ends of the concave portion and having a slope formed in the circumferential direction Forming a slope on the four peripheral edges through both the long direction and the short direction so that the decorative sheet side of the decorative sheet to which the decorative sheet is attached is located on the metal slope forming press roll side, Or the shape of the slope on the four peripheral edges Which is characterized in that a press plate wherein the forming a slope to the four peripheral portions of the decorative sheet side was pressed decorative sheet from the decorative sheet side of the decorative plate stuck, is any method with It is. The invention according to claim 2 is a flooring in which a decorative sheet is attached to one surface of a rectangular wooden base material, and the decorative sheet is attached by the manufacturing method according to claim 1. The slopes covered with the decorative sheet are formed on the four peripheral edges on the formed side.
[0008]
The invention according to claim 3 is a floor surface formed by laying a plurality of floor materials using at least the floor material according to claim 2, wherein a joint between the floor materials is a decorative sheet. It is characterized by comprising a groove portion covered with .
[0009]
By configuring as described above, the flooring and floor having a groove portion excellent in water resistance, having a groove portion excellent in design with a sense of depth, even when an external force such as an impact is applied during movement of a caster, etc. It can be a surface. Moreover, even when a plywood is used for the wooden base material, fibers such as socks and stockings can be caught and floor materials and floor surfaces having grooves that are unlikely to cause wire transmission .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The above-described present invention will be described in detail below with reference to the drawings.
1 is a perspective view showing an embodiment of a flooring according to the present invention, FIG. 2 is an enlarged cross-sectional view of a joint portion of the flooring according to the present invention, and FIG. 3 is a floor surface on which the flooring according to the present invention is laid. FIG. 4 is a schematic view for explaining a method of forming slopes on the four peripheral edges of the decorative sheet side of the flooring according to the present invention, and FIG. 5 is a cross-sectional view taken along line XX of FIG. In the figure, 1 is a flooring material, 2 is a woody base material, 3 is a decorative sheet, 4 is a slope, 5 is a female fruit, 6 is a male fruit, 7 is a groove part, 8 is a corner flooring material, 9 Denotes an end floor material, 10 denotes a floor surface, and α and β denote metal press rolls, respectively.
[0011]
FIG. 1 is a perspective view showing an embodiment of a flooring according to the present invention. The flooring 1 has a grain pattern on one surface of a rectangular wooden base material 2 via an adhesive (not shown). While the decorative sheet 3 is stuck, the rounded slope 4 is formed in the four peripheral part of the side by which the decorative sheet 3 was stuck. When the floor materials 1 configured as described above are joined, a groove portion 7 (see FIG. 2) covered with the decorative sheet 3 is formed at the joint portion between the floor materials 1. Further, the wooden base material 2 is subjected to actual processing as necessary to form female seeds 5 and male seeds 6 on the side portions of the flooring 1, and the female seeds 5 and male seeds 6 are fitted. In combination, the flooring materials can be joined together.
[0012]
FIG. 2 is an enlarged cross-sectional view of the joint portion of the flooring according to the present invention, in which the flooring 1 is fitted between the female seed 5 and the male seed 6 provided on the wooden base material 2 and the flooring. The groove part 7 covered with the decorative sheet 3 is formed on the decorative sheet 3 side of the joint portion between the ones. Since the groove portion 7 has a configuration in which the entire surface is covered with the decorative sheet 3, the adhesion interface between the wooden base material 2 and the decorative sheet 3 is not exposed, and an impact or the like is applied to the groove portion 7 when a caster or the like is moved. Even if external force is applied, the decorative sheet is difficult to peel off. Further, since the groove portion 7 is completely covered with the decorative sheet 3, water does not penetrate into the wood base material 3, and a medium density fiber board (MDF) is used as the wood base material 3. It is hard for swelling to occur. Further, since the wood base material 3 is not exposed in the groove portion 7, for example, fibers such as socks and stockings can be used even if a plywood with severe fiber fluff due to cutting is used for the wood base material 3. It will not get caught, and as a result, it will be difficult to generate wires in socks and stockings. Furthermore, by forming the groove part 7 with the same decorative sheet 2 as the exposed surface, it is possible to obtain a groove part with a sense of depth and excellent design.
[0013]
FIG. 3 is a plan view of an essential part showing an embodiment of a floor surface on which a floor material according to the present invention is laid, and the floor surface 10 has a plurality of floor materials laid at corners of a room. In FIG. 3, the portion indicated by the halftone dots is a joint between the floor materials, and is a portion where the groove portion 7 as shown in FIG. 2 is formed. The floor material 1 of the present invention has a floor surface as shown in FIG. Used in places other than corners and edges. That is, in FIG. 3, four flooring materials 1 of the present invention are used, and a total of five corner flooring materials 8 and end flooring materials 9 are used at corners and ends. As a matter of course, the corner flooring 8 and the end flooring 9 are formed with the slopes 4 covered with the decorative sheet 3 on the two consecutive peripheral edges and the three peripheral edges.
[0014]
Next, the material which comprises the flooring 1 of this invention is demonstrated. First, the woody base material 2 will be described.
The woody base material 2 is any one of plywood (including LVL), medium density fiberboard (MDF), high density fiberboard (HDF), particle board, veneer, wood, laminated wood, or the like. Can be used as appropriate.
[0015]
Next, the decorative sheet 3 constituting the flooring 1 of the present invention will be described. The decorative sheet 3 is provided to provide a design as a flooring material and / or to provide various physical properties required for the flooring material, particularly surface physical properties. The sheet constituting the decorative sheet 3 is not particularly limited, and a single piece of paper or various synthetic resin sheets or a laminate thereof is suitable. Paper and various synthetic resin sheets are not limited to white or colorless and transparent sheets, and may be sheets colored with a pigment or the like. Furthermore, the synthetic resin sheet may be in any state such as an unstretched state or a stretched state in one or two axes. Note that paper and various synthetic resin sheets may be subjected to easy adhesion treatment such as corona discharge treatment, plasma treatment, and ozone treatment on one or both surfaces as necessary.
[0016]
The decorative sheet 3 is printed with, for example, a wood grain pattern as one means for providing a design as a flooring material. As the ink used for this printing, a resin system may be selected as appropriate depending on the material of the printing sheet. As the vehicle, chlorinated polyolefin such as chlorinated polyethylene and chlorinated polypropylene, polyester, polyurethane composed of isocyanate and polyol, Used in combination with one or more of polyacryl, polyvinyl acetate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, cellulose resin, polyamide resin, etc., and pigments, solvents, various auxiliary agents, etc. Can be used in the form of an ink. In addition, the decorative sheet 3 can be provided with a concavo-convex pattern as necessary by embossing or the like, and the design as a flooring can be improved. For example, a conduit groove provided in a conduit portion such as a wood grain pattern.
[0017]
The decorative sheet 3 is usually provided with a surface on the outermost surface of the decorative sheet 3 in order to impart physical properties required as a flooring, particularly surface properties such as scratch resistance, abrasion resistance and stain resistance. A protective layer is provided. Examples of the resin for forming the surface protective layer include epoxy resins, acrylic resins, urethane resins, amide resins, ester resins, or polyolefins such as polyethylene, polypropylene, polybutene, polybutadiene, and polyisoprene. Copolymers of two or more kinds of olefins such as ethylene, propylene, butene, butadiene, isoprene, etc., or copolymers of α-olefins having 4 or more carbon atoms (linear low density polyethylene), ethylene-vinyl acetate copolymer Examples thereof include a polymer, an ethylene-vinyl alcohol copolymer, or a mixed resin composed of one or more of these. As a method for forming this surface protective layer, for example, the resin is made into a solution, melted by heating, and a known coating means such as a gravure printing method, a roll coating method, or an extrusion coating method is used. It can be formed by coating appropriately and can be formed by forming the above resin into a film and laminating by a known laminating method such as dry lamination.
[0018]
However, more preferably, the surface protective layer is formed of an ionizing radiation curable resin. This is because the surface hardness is high and the productivity is excellent. An ionizing radiation curable resin is a resin that undergoes a cross-linking polymerization reaction upon irradiation with ionizing radiation and changes to a three-dimensional polymer structure. Ionizing radiation means an electromagnetic wave or charged particle beam having an energy quantum capable of polymerizing and crosslinking molecules, such as visible light, ultraviolet light (near ultraviolet light, vacuum ultraviolet light, etc.), X-ray, electron beam, ion beam, etc. is there. Usually, ultraviolet rays and electron beams are used. As the ultraviolet rays, light sources such as ultra-high pressure mercury lamps, high pressure mercury lamps, low pressure mercury lamps, carbon arc lamps, black light fluorescent lamps, and metal halide lamps can be used. As a wavelength of ultraviolet rays, a wavelength range of 1900 to 3800 mm is usually used. Further, as the electron beam, various electron beam accelerators such as a Cockroft Walton type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, a high frequency type, etc. are used, and 100 to 1000 KeV, Preferably, those that irradiate with electrons having an energy of 100 to 300 KeV can be used.
[0019]
Examples of the ionizing radiation curable resin include a monomer having a radically polymerizable unsaturated group such as (meth) acryloyl group, (meth) acryloyloxy group, or a cationically polymerizable functional group such as epoxy group in the molecule. It consists of a polymer or a polymer (hereinafter collectively referred to as a compound). These monomers, prepolymers, and polymers are used alone or in combination. In this specification, (meth) acrylate is used in the meaning of acrylate or methacrylate.
[0020]
Examples of the prepolymer having a radical polymerizable unsaturated group include polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate, and polyvinylpyrrolidone. This prepolymer usually has a molecular weight of about 10,000 or less. When the molecular weight exceeds 10,000, the cured resin layer has insufficient surface properties such as scratch resistance, abrasion resistance, chemical resistance, and heat resistance. Although the acrylate and methacrylate can be used in common, the acrylate is more advantageous for the purpose of curing efficiently at a high speed and in a short time because the acrylate is faster in terms of the crosslinking curing rate with ionizing radiation.
[0021]
Examples of the prepolymer having a cationic polymerizable functional group include epoxy resins such as bisphenol type epoxy resins, novolak type epoxy resins, and alicyclic epoxy resins, aliphatic vinyl ethers, aromatic vinyl ethers, urethane vinyl ethers, and esters. And vinyl ether resins such as vinyl ether, prepolymers such as cyclic ether compounds and spiro compounds.
[0022]
The ionizing radiation curable resin is sufficiently cured when irradiated with an electron beam. However, when it is cured by irradiation with ultraviolet rays, a photopolymerization initiator can be added as a sensitizer. As a photopolymerization initiator in the case of a resin system having a radically polymerizable unsaturated group, acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ether, Michler benzoin benzoate, Michler ketone, diphenyl sulfide, dibenzyl disulfide, Diethyl oxide, triphenylbiimidazole, isopropyl-N, N-dimethylaminobenzoate and the like can be used alone or in combination. In the case of a resin system having a cationic polymerizable functional group, it is used alone or as a mixture of aromatic diazonium salt, aromatic sulfonium salt, metallocene compound, benzoin sulfonic acid ester, freeloxysulfoxonium diallyl iodosyl salt, etc. be able to. In addition, generally the addition amount of these photoinitiators is about 0.1-10 weight part with respect to 100 weight part of ionizing radiation curable resins. Moreover, as a method of forming a protective layer with an ionizing radiation curable resin, for example, it is formed by dissolving an ionizing radiation curable resin and applying it by a known coating method such as a gravure coating method or a roll coating method. Can do. As a coating amount, about 5-30 g / m < 2 > is suitable in general as solid content, More preferably, it is 15-25 g / m < 2 >.
[0023]
In addition, in the case of further imparting scratch resistance and abrasion resistance to the surface protective layer formed from the ionizing radiation curable resin, powdered aluminum oxide, silicon carbide, silicon dioxide, calcium titanate, titanic acid This can be achieved by adding an abrasive such as barium, magnesium pyroborate, zinc oxide, silicon nitride, zirconium oxide, chromium oxide, iron oxide, boron nitride, diamond, gold sand and glass fiber. The ratio of abrasive to 100 parts by weight of ionizing radiation curable resin is suitably 1 to 80 parts by weight.
[0024]
The adhesive for adhering the above-mentioned decorative sheet 3 to the above-described wood-based substrate 2 needs to be appropriately selected depending on the material constituting the surface of the decorative sheet 3 in contact with the adhesive. What is necessary is just to select and use from well-known adhesive agents, such as resin, urea resin, and urethane type resin.
[0025]
In addition, as a method of forming the slope 4 covered with the decorative sheet 3 formed on the four peripheral edges on the decorative sheet 3 side of the flooring 1, various forming methods can be adopted. After sticking the decorative sheet on the base material, (1) as shown in FIG. 4 and FIG. 5, there are concave portions in the circumferential direction, and rounded cross-section slopes are provided in the circumferential direction at both axial ends of the concave portions. The end of the decorative sheet side is passed between the metal press roll α formed of the surface shape and the metal press roll β formed of the flat surface shape so that the decorative sheet side is positioned on the metal press roll α side. To form a slope (metal press rolls α and β are both drive rolls) or (2) Press from the decorative sheet side with a press plate having a slope shape to form a slope at the end of the decorative sheet side Forming method or (3) After attaching a decorative sheet to a wooden base material, cut the vicinity of the interface of the wooden base material with the decorative sheet into a slope shape, and if necessary, apply an adhesive to the cutting surface to cut the decorative sheet A method of forming a slope at the end of the decorative sheet side by sticking to the surface, or (4) cutting the end of one side of the wooden base material into a slope shape with a tenoner, router, etc. And a method of attaching a decorative sheet to the one surface formed of a slope and forming a slope at the end of the decorative sheet. The above forming methods may be used in combination, and the slopes of the floor material in the long direction and the short direction may be formed by different forming methods. Moreover, as a method of sticking a decorative sheet to a wooden base material, a soft roll laminating method, a vacuum press method, a bead shot (BS) method, a wrapping method, and the like can be exemplified. In the description so far, the slopes formed on the four peripheral edge portions on the decorative sheet 3 side of the flooring 1 have been rounded, but the shape of the slopes is not limited to this, for example, the flooring is joined to each other Then, it may be a slope having a V shape or a U shape when the groove portion is formed.
[0026]
【Example】
Next, the present invention will be described in more detail with reference to the following examples.
[Manufacture of decorative sheets]
One side of a 60 μm olefin resin sheet subjected to double-sided corona discharge treatment, an acrylic-urethane resin (a resin in which 5 parts by weight of hexamethylene diisocyanate is added to 100 parts by weight of acrylic polyol) is added to a solid content of 2 g by a gravure coating method. / M 2 is applied to form a printing primer layer, and an acrylic-urethane resin (a resin obtained by adding 5 parts by weight of hexamethylene diisocyanate to 100 parts by weight of acrylic polyol) is formed on the printing primer layer. A solid pattern printing layer and a pattern printing layer are sequentially printed by a gravure printing method using a printing ink to form a woodgrain pattern printing layer, and urethane is further added so that the solid content is 10 g / m 2 on the printing layer. An adhesive layer is formed by applying an adhesive on the T-die so that the propylene-based resin has a thickness of 80 μm on the adhesive layer. To form a transparent resin layer by heating and melting extruded at extruder. Thereafter, the surface of the transparent resin layer is subjected to corona discharge treatment, and an acrylic-urethane resin (resin in which 5 parts by weight of hexamethylene diisocyanate is added to 100 parts by weight of acrylic polyol) is added to the corona discharge treatment surface by a gravure coating method. solids 15g in but to form a surface protective layer for a primer layer by coating so as to 1 g / m 2, and a roll coating method urethane acrylate electron beam curing resin to the surface protective layer for a primer layer / M 2 is applied and dried to form an uncured electron beam curable resin layer, and an electron beam (acceleration voltage) is applied to the uncured electron beam curable resin layer in an environment having an oxygen concentration of 200 ppm or less. 125 KeV, 5 Mrad) is applied to cure and form a surface protective layer made of an electron beam curable resin, and the grain depth of the plate is 50 μm from the surface protective layer side. Carried out embossed with Jo embossing plate, to prepare a decorative sheet obtained by forming an uneven pattern of the wood grain conduit.
[0027]
[Bonding of wooden base material and decorative sheet]
An adhesive (manufactured by Chuo Rika Kogyo Co., Ltd .: Rikabond BA-10A / BA-10B = 100/5) was applied to one surface of a 12 mm-thick plywood so as to be 6 g / scale 2 in a wet state, and produced as described above. The decorative sheet was pasted and pressed with a cold press (press pressure: 2 kg / cm 2 , press time: 1 hour) to prepare a decorative plate.
[0028]
Example 1
The decorative board produced above is cut into a desired rectangular size, and actual processing is performed on the four side surfaces using a tenoner, and at the processing speed of 20 m / min, using a slope forming apparatus as shown in FIGS. The decorative board subjected to actual processing was processed in the order of the long direction and the short direction to form a 0.5 mm round slope to obtain the flooring of the present invention.
[0029]
Comparative Example 1
The decorative board produced above was cut into a desired rectangular size, and actual processing was performed on four side surfaces using a tenoner to obtain a flooring material as Comparative Example 1.
[0030]
Comparative Example 2
The decorative board produced above is cut into a desired rectangular dimension, and actual processing is performed on the four side surfaces using a tenoner, and the chamfering process is performed on the four peripheral edge portions of the decorative sheet side with a 0.5 mm radius. A flooring material of Comparative Example 2 was obtained by coating, drying, and solidifying a urethane-based water-based paint.
[0031]
The floor materials of Example 1 and Comparative Example 1 produced above were joined so that the level difference was 0.2 to 0.3 mm, and the peeling test of the decorative sheet described below was performed on the joint, and the evaluation was made. The results are shown in Table 1.
[0032]
[Table 1]
Figure 0004612224
* Peeling test for decorative sheet Place a 2cm square, 4cm long rectangular stainless steel jig so that one side of the long side is in contact with the flooring surface, and cross the flooring joint with its own weight. Thus, the number of reciprocations until the decorative sheet was peeled off from the wooden base material was evaluated.
[0033]
The floor materials of Example 1 and Comparative Example 2 produced above were joined to each other, and the fiber catch test described below was performed on the joint, and the evaluation results are shown in Table 2.
[0034]
[Table 2]
Figure 0004612224
* Fiber hook test Using a residential wiper (Quickle Wiper manufactured by Kao Corporation), the floor material surface was rubbed along the floor joint and the number of times the wiper fibers adhered to the joint was evaluated. .
[0035]
As is clear from the evaluation results, the present invention is a flooring material in which the decorative sheet is difficult to peel off and the fibers are not easily caught.
[0036]
【The invention's effect】
As has been often described so far, according to the present invention, the joints between flooring materials are provided on the four sides on the side of the decorative material sheet of the flooring material, which has a structure in which a decorative sheet is adhered to a wooden base material. In this case, the slope is formed so that the groove covered with the decorative sheet is formed, so that the decorative sheet is difficult to peel off even when an external force such as an impact is applied to the groove when the caster or the like is moved. Floor material that does not easily swell due to permeation into the material, and that is difficult to cause transmission lines in socks or stockings due to being caught by fibers such as socks or stockings, and also has a groove with a sense of depth and excellent design. It can be.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a flooring according to the present invention.
FIG. 2 is an enlarged cross-sectional view of a joint portion of a flooring according to the present invention.
FIG. 3 is a plan view of an essential part showing an embodiment of a floor surface on which a flooring according to the present invention is laid.
FIG. 4 is a schematic diagram for explaining a method of forming slopes on the four peripheral edges of the decorative sheet side of the flooring according to the present invention.
5 is a cross-sectional view taken along line XX of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor material 2 Wood type base material 3 Dressing sheet 4 Slope 5 Female seed 6 Male fruit 7 Groove part 8 Corner part flooring 9 End part flooring 10 Floor surface alpha, beta Metal press roll

Claims (3)

矩形状の木質系基材の一方の面の四周縁部が略一致するように化粧シートを貼着してなる化粧板を四周縁部斜面形成手段により前記化粧シートが貼着された側の四周縁部のみに斜面を形成してなる床材の製造方法であって、前記四周縁部斜面形成手段が円周方向に凹部を有すると共に該凹部の軸方向の両端部であって円周方向に斜面が形成された表面形状からなる金属製斜面形成プレスロールとフラットな表面形状からなる金属製フラットプレスロール間を前記化粧シートを貼着した前記化粧板の前記化粧シート側が金属製斜面形成プレスロール側に位置するように長尺方向および短尺方向のいずれの方向も通して四周縁部に斜面を形成する、ないし、四周縁部に斜面の形状を有するプレス板で前記化粧シートを貼着した前記化粧板の前記化粧シート側からプレスして化粧シート側の四周縁部に斜面を形成する、のいずれかの方法であることを特徴とする床材の製造方法。A decorative plate formed by adhering a decorative sheet so that the four peripheral edges of one surface of the rectangular woody base material substantially coincide with each other is provided on the side on which the decorative sheet is attached by the four peripheral edge slope forming means. A method of manufacturing a flooring material in which a slope is formed only at a peripheral part, wherein the four peripheral part slope forming means has a concave part in a circumferential direction and at both end parts in the axial direction of the concave part in a circumferential direction. The decorative sheet side of the decorative plate in which the decorative sheet is attached between a metallic inclined surface press roll having a sloped surface shape and a metallic flat press roll having a flat surface shape is a metallic inclined surface forming press roll. The slant is formed on the four peripheral edges through both the long direction and the short direction so as to be located on the side, or the decorative sheet is pasted with a press plate having a slant shape on the four peripheral edges. said of the decorative plate Method for producing a flooring material, characterized in that from the sheet side to form a slope on the four peripheral portions of the decorative sheet side was pressed is any method. 矩形状の木質系基材の一方の面に化粧シートが貼着された床材であって、請求項1記載の製造方法により、前記化粧シートが貼着された側の四周縁部に前記化粧シートで被覆された斜面を形成したことを特徴とする床材。  A flooring material in which a decorative sheet is attached to one surface of a rectangular wooden base material, wherein the makeup is applied to the four peripheral edges of the side on which the decorative sheet is attached by the manufacturing method according to claim 1. A flooring characterized by forming a slope covered with a sheet. 請求項2記載の床材を少なくとも用い、複数枚の床材を敷設することにより形成される床面であって、前記床材同士の接合部が化粧シートで被覆された溝部からなることを特徴とする床面。  A floor surface formed by laying a plurality of flooring materials using at least the flooring material according to claim 2, wherein a joint portion between the flooring materials comprises a groove portion covered with a decorative sheet. And floor surface.
JP2001143184A 2001-05-14 2001-05-14 Floor material, manufacturing method thereof, and floor surface using the floor material Expired - Fee Related JP4612224B2 (en)

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SE525661C2 (en) 2002-03-20 2005-03-29 Vaelinge Innovation Ab Floor boards decorative joint portion making system, has surface layer with underlying layer such that adjoining edge with surface has underlying layer parallel to horizontal plane
RS51078B (en) * 2005-02-15 2010-10-31 Välinge Innovation Ab. Method to make a floorboard with compressed edges
JP4706333B2 (en) * 2005-05-27 2011-06-22 凸版印刷株式会社 Four-way flooring
JP2007170059A (en) * 2005-12-22 2007-07-05 Matsushita Electric Works Ltd Floor material
EP4371758A3 (en) * 2010-07-09 2024-08-07 Unilin, BV Floor panel
JP5794723B2 (en) * 2010-10-26 2015-10-14 東リ株式会社 Flooring
EP3971365A1 (en) * 2020-09-17 2022-03-23 Surface Technologies GmbH & Co. KG Panel

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