JP3928893B2 - Embossed decorative board - Google Patents
Embossed decorative board Download PDFInfo
- Publication number
- JP3928893B2 JP3928893B2 JP02323597A JP2323597A JP3928893B2 JP 3928893 B2 JP3928893 B2 JP 3928893B2 JP 02323597 A JP02323597 A JP 02323597A JP 2323597 A JP2323597 A JP 2323597A JP 3928893 B2 JP3928893 B2 JP 3928893B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- decorative board
- resist layer
- embossed
- etching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Laminated Bodies (AREA)
Description
【0001】
【産業上の利用分野】
本発明はエンボス化粧板に関する。
【0002】
【従来の技術】
従来、メラミン樹脂、ジアリルフタレート樹脂などの熱硬化性樹脂よりなる樹脂液を化粧板用の化粧紙に含浸した樹脂含浸化粧紙と、フェノール樹脂含浸紙、合板、パーティクルボードなどのコア材と、金属製の型板やプラスティック製の型板とを用いて熱圧成形することにより得られる化粧板があり、表面が平坦な化粧板と表面に凹凸を賦与したエンボス化粧板が知られている。
【0003】
エンボス化粧板は表面が平坦な化粧板に比べ立体感に富み印刷紙の模様と型板の形状を適宜選択して組み合わせることでデザインも豊富で、このエンボス化粧板の製法についてはインク中にハイドロキノンの如き重合禁止剤を添加して印刷を施した化粧紙に熱硬化性樹脂よりなる樹脂液を含浸し、コア材とともに熱圧成形して硬化速度の差により凹凸を形成するいわゆる化学的エンボス法と、金属製、プラスチック製の型板や賦型シートを用いて熱硬化性樹脂含浸化粧紙、コア材ともに熱圧成形して凹凸を賦与する物理的エンボス法に大別される。
【0004】
一般に物理的手段により凹凸を賦与したエンボス化粧板は化学的エンボス法に基づいたものに比べ凹凸を深くすることが可能で、この凹凸の深さゆえに仕上がり外観がより立体的で付加価値が追及される昨今では需要も多いものとなっている。
【0005】
【発明が解決しようとする課題】
しかしながら、物理的エンボス法に基づいたエンボス化粧板は凹凸の深さが20〜80μmと深く立体感に優れる反面、カウンター、机、テーブルなどの水平面用途として長期間使用すると人、物による接触頻度の多い箇所の凸部は擦られるため艶が変化しやすく初期の仕上がりとはほど遠いものとなることがあった。これは光沢度の高いエンボス化粧板については艶落ちとして顕著に現れ、また、光沢度の低いエンボス化粧板については表面状態の平滑性が乏しければ逆に艶が上がる傾向があった。
【0006】
【課題を解決するための手段】
本発明はかかる状況に鑑み検討されたもので、エンボス化粧板において、型板としてステンレス製のプレートの表面にエッチングレジスト層を設けてエッチング処理して凹部を形成した後、該エッチングレジスト層を除去して全面を研磨し、次いで凸部にブラストレジスト層を設けて全面を粒子径250〜400μmのガラスビーズによりブラスト加工し、しかる後該ブラストレジスト層を除去した賦型プレートを用いてなり、製品においてエンボス凹部の光沢度がエンボス凸部の光沢度より20〜50°高いことを特徴とするエンボス化粧板である。以下、本発明について図面を参照しながら詳細に説明する。
【0007】
図1は本発明で得られるエンボス化粧板(9)の断面図を示し、図2〜図5は賦型プレート(8)の製造方法を示す断面図である。図2に示されるように賦型プレート(8)は先ずエンボス化粧板の製造時の温度、圧力に耐えうるようにSUS304、SUS410、SUS430などのステンレス製のプレ−ト(1)を選択した後、表面に塩素化ポリオレフィン樹脂、クマロン樹脂、ゴム系樹脂などをベースにした有機溶剤剥離型のインクを用いて所望のパターンのスクリーン印刷を施し付着性が向上するように加熱乾燥してエッチングレジスト層(2)が設けられる。
【0008】
エッチングレジスト層(2)はスクリーン印刷によらずとも感光性のレジスト液をステンレス製のプレ−ト(1)の表面に塗布し所望のマスクパターンを有するフィルムを用いて露光、現像してレジスト層を形成するいわゆる写真法が考えられるが工数と時間を要する上、レジスト層とステンレス製のプレート(1)との密着性、露光の管理、レジスト液の溢れなどを考慮すればスクリーン印刷法に基づくのが望ましい。
【0009】
次に図3に示されるようにエッチングレジスト層(2)以外の表面をエッチングして凹部(3)を形成するが、エッチングについては塩化第二鉄水溶液単独よりむしろ塩化第二鉄を主剤としステンレス製のプレ−ト(1)の表面の難溶解性不純物を除去し溶解速度を向上させるために過酸化水素水、硝酸、塩酸などを添加物とするエッチング溶液を用いて処理するのが望ましい。塩化第二鉄水溶液は貴金属材料やチタン、タンタルなどの高耐食材料を除く金属に対して優れた腐食性を有しており、エッチングレジスト層(2)の浮きや剥離を生じることなくエッジ周辺が綺麗に仕上がる。
【0010】
エッチング方法については化学エッチング、電解エッチングなどがあるがエンボス化粧板用に供される大面積のステンレス製のプレ−ト(1)の表面に均一な深さの凹部を形成し、また温度、電流密度などの条件管理を容易にすることなどを考慮すれば電解エッチングよりむしろ化学エッチングにより凹部(3)を形成するのが好ましい。化学エッチングとしては浸漬法、スプレー法などの公知のエッチング法が挙げられるが特に制約はない。
【0011】
化学エッチングにより深さ10〜70μmの凹部(3)を形成した後は図4〜図5に示されるようにエッチングレジスト層(2)を有機溶剤で除去してバフ研磨やベルト研磨などの機械研磨により全面を研磨し、しかる後凸部(4)にエッチングレジスト層(2)と同様の樹脂をベースにしたインクをスクリーン印刷し加熱乾燥してブラストレジスト層(5)を設けて全面をブラスト処理し、さらにブラストレジスト層(5)を有機溶剤で除去すると賦型プレート(8)が得られる。
【0012】
ブラストレジスト層(5)は耐衝撃性に優れるゴム系樹脂をベースにしたインクを用いて形成するのがとりわけ好ましく、前述のエッチングレジスト層(2)もゴム系樹脂をベースにしたインクを用いればベース材料を共有でき非常に都合がよい。
【0013】
エッチングレジスト層(2)、ブラストレジスト層(5)はステンレス製のプレート(1)上の同じ位置に形成されるため同一のスクリーン版で賄うことができる。各々の層を除去するための有機溶剤としては、トリクロロエタン、メチルエチルケトン、アセトン、トルエンなどが挙げられるが特に制約はない。
【0014】
ブラスト加工についてはステンレス製のプレ−ト(1)のエッチング凹部(3)の粗面を平滑にし所望の深さになるように粒子径250〜400μmのガラスビーズをブラスト材として用い圧縮空気と混合して投射できる装置を用いればよく、例えばエアブラスト装置が挙げられる。ガラスビーズ以外のブラスト材、例えば鉄粉や砂などは角がありエッチング凹部(3)の粗面を平滑にするには不充分で熱圧成形後の化粧板表面の耐汚染性が劣るため好ましくない。ガラスビーズの粒子径が250μm未満の場合には光沢を低下させる効果が得られにくく、また、粒子径が400μmを越えるとブラスト面が粗くなり平滑性が得られにくくなる。この平滑性については特に重要であり、平滑性が不充分で表面がざらついた状態の場合にはエツチング凹部(3)が転写されて形成されるエンボス化粧板の凸部(3a)は耐汚染性に劣るばかりでなく摩擦による艶の変化を受けやすいものとなる。
【0015】
このようにして得られる賦型プレート(8)上述のようにスクリーン印刷、研磨、ブラストなどの工程で充分対応でき、ニッケル、クロムなどの金属メッキ工程、感光性レジスト材、露光工程などが不要であり生産上都合がよい。
【0016】
賦型プレート(8)と化粧板用の化粧紙に熱硬化性樹脂よりなる樹脂液を含浸した樹脂含浸化粧紙とコア材とを積層して一対の熱盤間に挿入して温度100〜160℃、圧力10〜70kg/cm2、時間5〜100分の条件で熱圧成形すると賦型プレート(8)の凹凸が転写されたエンボス化粧板(9)が得られる。
【0017】
樹脂含浸化粧紙は薄葉紙、チタン紙、リンタ−紙などの化粧紙にメラミン樹脂、ジアリルフタレート樹脂、不飽和ポリエステル樹脂、グアナミン樹脂などの熱硬化性樹脂よりなる樹脂液を含浸処理したものが適用でき、更に化粧層を保護し、耐摩耗性を向上させるためにα−セルロ−スを主成分とする表面紙に同様の樹脂液を含浸した樹脂含浸表面紙を用いても良い。
【0018】
メラミン樹脂としてはメラミンとホルムアルデヒドを反応させたメラミン−ホルムアルデヒド初期縮合物を基本にアルコ−ル類によるエ−テル化、あるいは、ベンゾグアナミン、アセトグアナミンなどのグアナミン類、パラトルエンスルフォンアミドの如き可塑化を促す変性剤で変性されたものが適用できる。
【0019】
コア材としては、化粧板用として供されるクラフト紙、不織布、クロスなどのコア紙に不飽和ポリエステル樹脂、フェノール樹脂、メラミン樹脂、ジアリルフタレート樹脂、SBRなどよりなる樹脂液を含浸した樹脂含浸コア紙や、また化粧合板用として供される基材、例えば合板、パーティクルボード、中密度繊維板などの木質材料が適用できる。
【0020】
不飽和ポリエステル樹脂は二価のアルコールと二塩基酸とを縮合反応せしめたもので、二価のアルコールとしてはエチレングリコール、ジエチレングリコール、プロピレングリコール、ジプロピレングリコール、1,3―ブチレングリコール、ネオペンチルグリコールなどが挙げられ、二塩基酸としては無水マレイン酸、フマル酸などの不飽和二塩基酸、イソフタル酸、無水フタル酸などが挙げられ、二価のアルコール、二塩基酸いずれも1種以上を選択して反応させればよい。
【0021】
コア紙にジアリルフタレート樹脂や不飽和ポリエステル樹脂、あるいはこれらを併用する場合には、硬化剤としてのメチルエチルケトンパーオキサイド、ベンゾイルパーオキサイドなどの有機過酸化物、及び硬化促進剤、充填剤などが加
えられる。さらに、硬化性、フロ−性、密着性などを向上させるためスチレン、オルトクロルスチレン、ジアリルフタレートモノマー、メチルメタクリレートなどの重合性モノマーを添加してもよい。
【0022】
コア紙に含浸されるフェノール樹脂はフェノール類とアルデヒド類を塩基性触媒下で脱水反応させレゾール型フェノール樹脂で、フェノール類としては、フェノール、クレゾール、キシレノール、オクチルフェノール、フェニルフェノール、ビスフェノールA、ビスフェノールS、ビスフェノールFなどが挙げられ、アルデヒド類としては、ホルマリン、パラホルムアルデヒド、グリオキザール、トリオキザールなどが挙げられる。また塩基性触媒としては、ナトリウム、カリウムなどのアルカリ金属、及びマグネシウム、カルシウムなどのアルカリ土類金属の酸化物や水酸化物、及びトリエチルアミン、トリエタノールアミンなどのアミン類が挙げられる。
【0023】
化粧紙、表面紙、コア紙などの化粧板用の原紙に前述の樹脂を用いる際には水、トルエン、アセトン、メタノールなどの溶媒で粘度調整のため希釈されディッピング、コーティングなどの手段により含浸処理される。手段については原紙に樹脂が充分に付着し乾燥できれば特に制約はない。
【0024】
【作用】
賦型プレート(8)、樹脂含浸化粧紙、コア材などの材料を積層し一対の熱盤間に挿入後熱圧成形して得られるエンボス化粧板(9)はJIS Z 8741に基づく凸部(3a)の光沢度が5〜40°と低く、かつエンボス化粧板(9)の凹部(4a)の光沢度が凸部(3a)の光沢度より20〜50°高くなり、20〜80μmのエンボスの深さと光沢度の差が相まってより立体感のある仕上がりとなる。
【0025】
また、エンボス化粧板(9)の凸部(3a)は、平滑性を有し低光沢となるようにブラスト処理された賦型プレート(8)の凹部が転写されたものであるため耐汚染性に優れ摩擦による光沢度の変化が極めて少なく長期間使用しても熱圧成形直後の外観を充分維持することができる。
【0026】
以下、本発明を実施例に基づいて詳細に説明する。
【実施例】
実施例1
賦型プレートの作成
厚み3mmのSUS430ステンレスプレートの表面にゴム系樹脂をベースにしたインクを用いて石目パターン状のスクリーン印刷を施しエッチングレジスト層を形成した後、塩化第二鉄を主剤とし硝酸を添加物とするエッチング溶液を用い浸漬法に基づいて処理して深さ40μmの凹部を形成した。次いでアセトンでエッチングレジスト層を除去して全面をバフ研磨し、凸部にゴム系樹脂をベースにしたインクを用いてスクリーン印刷を施しブラストレジスト層を設けた。次いでエッチング凹部を平滑になるように粒子径300μmのガラスビーズをエアーブラスト装置のノズルから投射圧力3kg/cm2で投射し、しかる後アセトンでブラストレジスト層を除去して賦型プレートを得た。
化粧紙用の樹脂の配合
変性メラミン−ホルムアルデヒド樹脂 100重量部
硬化剤
(パラトルエンスルホン酸) 1重量部
離型剤 1重量部
200g/m2のクラフト紙にフェノールとホルマリンを水酸化ナトリウム下反応させたフェノール樹脂よりなる樹脂液を100g/m2含浸させた樹脂含浸コア紙を4枚と、酸化チタン隠蔽剤及び顔料を抄き込んだ100g/m2の淡褐色の無地パターン紙に上記配合の樹脂よりなるメラミン樹脂液を110g/m2含浸させた樹脂含浸化粧紙を1枚と、上記の賦型プレートとを順次積層した後平板プレスの熱盤間に挿入して、圧力70kg/cm2、温度150℃、時間50分の条件で熱圧成形して実施例1のエンボス化粧板を得た。実施例1のエンボス化粧板の成形直後の外観は凹部と凸部に艶の差があり、また耐摩耗試験5000回実施後においても凸部の光沢度の変化は認められなかった。
【0027】
比較例1
実施例1において、スクリーン印刷によるブラストレジスト層を設けなかった以外は実施例1と同様に熱圧成形して比較例1の化粧板を得た。比較例1の化粧板の成形直後の表面を目視で確認すると凹部と凸部の艶の差がなかった。
【0028】
比較例2
実施例1において、粒子径300μmのガラスビーズのかわりに粒子径300μmのケイ砂を用いた以外は実施例1と同様に熱圧成形して比較例2の化粧板を得たが、エッチング凹部の粗面の平滑性に乏しくJIS K 6903の耐汚染性に適合せず、耐摩耗試験5000回実施後光沢度が変化した。
【0029】
比較例3
実施例1において、厚み3mmのSUS430ステンレスプレートの表面をバフ研磨した後にゴム系樹脂をベースにしたインクを用いて石目パターン状のスクリーン印刷を施しエッチングレジスト層を形成した。次いで塩化第二鉄を主剤とし硝酸を添加物とするエッチング溶液を用いて深さ50μmの凹部を形成した。しかる後アセトンでエッチングレジスト層を除去した得られたプレートを用いた以外は実施例1と同様に熱圧成形して比較例3の化粧板を得た。比較例3の化粧板は仕上がり外観は実施例1と同程度に艶の差があり立体感があったが、化粧板の凸部はプレート凹部のエッチングによるランダムな微細形状が転写されたものであるためJIS K 6903の耐汚染性に適合せず、耐摩耗試験5000回実施後光沢度が大きく変化した。
【0030】
評価結果を表1に示す。
【表1】
【0031】
評価方法は以下の通りとした。
成形直後の外観;成形直後のエンボス化粧板、化粧板の表面の艶を目視にて確認し、凹部と凸部の艶の差があるものを○、凹部と凸部の艶の差がないものを×とした。
耐摩耗試験5000回の外観;試験後ののエンボス化粧板、化粧板の表面の艶を目視にて確認し、凹部と凸部の艶の差があるものを○、凹部と凸部の艶の差が軽微なものを△、凹部と凸部の艶の差がないものを×とした。
耐摩耗試験;1kgの素焼きの灰皿を10m/minの速さでエンボス化粧板、化粧板の表面を往復運動させ、1往復を1回とした。
光沢度;株式会社村上色彩技術研究所の光沢度計GMX−101型(校正標準板として黒塗りBKガラスを使用。入射角、受光角ともに60°)を用いて、耐摩耗試験実施前と5000回実施後のエンボス凹部とエンボス凸部の光沢度をJIS Z 8741に基づいて測定した。
耐汚染性;JIS K 6902に従って試験を行い、JIS K 6903に適合するものを○、適合しないものを×とした。
【0032】
【発明の効果】
一般にエンボス加工した化粧板は摩擦による凸部の艶の変化が大きいが、本発明の製法に基づき凸部(3a)の光沢度が5〜40°と低く、かつエンボス化粧板(9)の凹部(4a)の光沢度が凸部(3a)の光沢度より20〜50°高くなるように作成されたエンボス化粧板は意匠的に見栄えがするばかりでなく、実施例1と比較例2で対比されるようにエンボス凸部の摩擦による光沢度の変化が極めて少なく、水平面用途として長期間使用しても生産当初の外観を保つことができる。
【0033】
また、比較例3と対比されるようにエンボス化粧板の凸部はブラスト処理された賦型プレートの凹部が転写されたものであるから耐汚染性に優れたものとなる。
【図面の簡単な説明】
【図1】 エンボス化粧板(9)の断面図を示す。
【図2】 ステンレス製のプレート(1)の表面にエッチングレジスト層(2)を形成した時の断面図を示す。
【図3】 エッチングして凹部(3)を形成した時の断面図を示す。
【図4】 エッチングレジスト層(2)を除去し凸部(4)にブラストレジスト層(5)を形成した時の断面図を示す。
【図5】 ブラスト加工後ブラストレジスト層(5)を除去して得た賦型プレート(8)の断面図を示す。
【符号の説明】
1 ステンレス製のプレート
2 エッチングレジスト層
3 ステンレスプレートの凹部
3a エンボス化粧板の凸部
4 ステンレスプレートの凸部
4a エンボス化粧板の凹部
5 ブラストレジスト層
8 賦型プレート
9 エンボス化粧板[0001]
[Industrial application fields]
The present invention relates to an embossed decorative board.
[0002]
[Prior art]
Conventionally, a resin-impregnated decorative paper in which a decorative liquid for a decorative board is impregnated with a resin liquid made of a thermosetting resin such as a melamine resin or a diallyl phthalate resin, a core material such as a phenol resin-impregnated paper, plywood or particle board, and a metal There is a decorative board obtained by hot-pressing using a metal mold plate or a plastic mold board, and a decorative board with a flat surface and an embossed decorative board with irregularities on the surface are known.
[0003]
Embossed decorative boards are rich in three-dimensionality compared to decorative boards with a flat surface, and the design is abundant by selecting and combining the pattern of the printing paper and the shape of the template appropriately. About the manufacturing method of this embossed decorative board, hydroquinone is contained in the ink. A so-called chemical embossing method in which a decorative paper printed with a polymerization inhibitor such as is impregnated with a resin liquid made of a thermosetting resin and hot pressed with a core material to form unevenness due to the difference in curing speed And a physical embossing method in which a thermosetting resin-impregnated decorative paper and a core material are hot-press-molded using a metal or plastic template or a shaping sheet to impart irregularities.
[0004]
In general, embossed decorative boards that have been provided with irregularities by physical means can make the irregularities deeper than those based on the chemical embossing method, and the depth of the irregularities makes the finished appearance more three-dimensional and adds value. Nowadays, there is much demand.
[0005]
[Problems to be solved by the invention]
However, the embossed decorative board based on the physical embossing method has a depth of 20 to 80 μm and is excellent in three-dimensionality. However, when used for a long time as a horizontal surface such as a counter, a desk, a table, etc. Since many convex portions are rubbed, the gloss is likely to change, and it may be far from the initial finish. The embossed decorative board having a high glossiness remarkably appears as gloss, and the embossed decorative board having a low glossiness tends to increase the gloss if the smoothness of the surface state is poor.
[0006]
[Means for Solving the Problems]
In which the present invention has been studied in view of such circumstances, removed in the embossed decorative board, after forming a recess in the surface of the stainless steel plate is provided an etching resist layer was etched as a template, the etching resist layer and polishing the entire surface, followed by blasting the entire surface of glass beads of particle diameter 250~400μm by blasting resist layer is provided on the convex portion, becomes with shaping plates removed thereafter the blast resist layer, the product The embossed decorative board is characterized in that the glossiness of the embossed concave portion is 20 to 50 ° higher than the glossiness of the embossed convex portion . Hereinafter, the present invention will be described in detail with reference to the drawings.
[0007]
FIG. 1 shows a cross-sectional view of an embossed decorative board (9) obtained by the present invention, and FIGS. 2 to 5 are cross-sectional views showing a method for producing a shaping plate (8). As shown in FIG. 2, after selecting the plate (1) made of stainless steel such as SUS304, SUS410, or SUS430 so that the shaping plate (8) can withstand the temperature and pressure at the time of manufacturing the embossed decorative board, Etching resist layer that is screen-dried with an organic solvent peeling type ink based on chlorinated polyolefin resin, coumarone resin, rubber resin, etc., and dried by heating to improve adhesion. (2) is provided.
[0008]
The etching resist layer (2) is formed by applying a photosensitive resist solution to the surface of the stainless steel plate (1) without using screen printing, and exposing and developing the film using a film having a desired mask pattern. The so-called photographic method can be considered, but it requires man-hours and time, and is based on the screen printing method in consideration of adhesion between the resist layer and the stainless steel plate (1), exposure management, and overflow of the resist solution. Is desirable.
[0009]
Next, as shown in FIG. 3, the surface other than the etching resist layer (2) is etched to form the recesses (3). The etching is made of stainless steel containing ferric chloride as a main component rather than ferric chloride aqueous solution alone. In order to remove the hardly soluble impurities on the surface of the manufactured plate (1) and improve the dissolution rate, it is desirable to perform the treatment using an etching solution containing hydrogen peroxide, nitric acid, hydrochloric acid or the like as an additive. The ferric chloride aqueous solution has excellent corrosiveness to metals other than precious metal materials and high corrosion resistant materials such as titanium and tantalum, and the edges around the edges without causing the etching resist layer (2) to float or peel off. Finished beautifully.
[0010]
Etching methods include chemical etching, electrolytic etching, etc., but concave portions with a uniform depth are formed on the surface of a large-area stainless steel plate (1) used for embossed decorative plates, and temperature, current In consideration of easy management of conditions such as density, it is preferable to form the recesses (3) by chemical etching rather than electrolytic etching. Examples of chemical etching include known etching methods such as an immersion method and a spray method, but are not particularly limited.
[0011]
After forming the recess (3) having a depth of 10 to 70 μm by chemical etching, the etching resist layer (2) is removed with an organic solvent and mechanical polishing such as buffing or belt polishing as shown in FIGS. After that, the entire surface is polished, and after that, an ink based on the same resin as the etching resist layer (2) is screen-printed on the convex portion (4) and dried by heating to provide a blast resist layer (5). Further, when the blast resist layer (5) is removed with an organic solvent, the shaping plate (8) is obtained.
[0012]
The blast resist layer (5) is particularly preferably formed using an ink based on a rubber-based resin having excellent impact resistance, and the above-described etching resist layer (2) may also be formed using an ink based on a rubber-based resin. The base material can be shared, which is very convenient.
[0013]
Since the etching resist layer (2) and the blast resist layer (5) are formed at the same position on the stainless steel plate (1), they can be covered by the same screen plate. Examples of the organic solvent for removing each layer include trichloroethane, methyl ethyl ketone, acetone, and toluene, but are not particularly limited.
[0014]
For blasting, glass beads with a particle size of 250-400 μm are used as blasting material and mixed with compressed air so that the rough surface of the etching recess (3) of the stainless steel plate (1) is smooth and has a desired depth. For example, an air blast device may be used. Blasting materials other than glass beads, such as iron powder and sand, are preferred because they have corners and are insufficient to smooth the rough surface of the etched recess (3) and are poor in stain resistance on the decorative plate surface after hot pressing. Absent. When the particle size of the glass beads is less than 250 μm, it is difficult to obtain the effect of reducing the gloss, and when the particle size exceeds 400 μm, the blast surface becomes rough and it becomes difficult to obtain smoothness. This smoothness is particularly important. When the surface is not smooth enough and the surface is rough, the embossed decorative protrusion (3a) formed by transferring the etching recess (3) is resistant to contamination. In addition to being inferior to, it becomes susceptible to changes in gloss due to friction.
[0015]
Molding plate (8) thus obtained can be adequately handled by processes such as screen printing, polishing and blasting as described above, and does not require a metal plating process such as nickel or chromium, a photosensitive resist material, or an exposure process. Yes, convenient for production.
[0016]
A resin-impregnated decorative paper impregnated with a resin liquid made of a thermosetting resin and a core material are laminated on a decorative plate (8) and decorative paper for decorative plate, and inserted between a pair of heating plates, and the temperature is 100 to 160. When hot pressing is performed under the conditions of ° C., pressure of 10 to 70 kg / cm 2 and time of 5 to 100 minutes, an embossed decorative board (9) to which the unevenness of the shaping plate (8) is transferred is obtained.
[0017]
Resin-impregnated decorative paper can be applied to decorative paper such as thin paper, titanium paper, and linter paper impregnated with a resin solution made of thermosetting resin such as melamine resin, diallyl phthalate resin, unsaturated polyester resin, and guanamine resin. Further, in order to further protect the decorative layer and improve the abrasion resistance, a resin-impregnated surface paper obtained by impregnating a similar resin liquid into a surface paper mainly composed of α-cellulose may be used.
[0018]
The melamine resin can be etherified with alcohols based on a melamine-formaldehyde initial condensate obtained by reacting melamine with formaldehyde, or plasticized with guanamines such as benzoguanamine and acetoguanamine, and paratoluenesulfonamide. Those modified with an accelerating modifier can be applied.
[0019]
The core material is a resin-impregnated core obtained by impregnating core paper such as kraft paper, non-woven fabric, cloth, etc. used for decorative boards with a resin solution made of unsaturated polyester resin, phenol resin, melamine resin, diallyl phthalate resin, SBR, etc. Paper or a base material used for decorative plywood, for example, a woody material such as plywood, particle board, or medium density fiber board, can be applied.
[0020]
Unsaturated polyester resin is obtained by condensation reaction of divalent alcohol and dibasic acid. Divalent alcohols include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, neopentyl glycol. Dibasic acids include unsaturated dibasic acids such as maleic anhydride and fumaric acid, isophthalic acid, phthalic anhydride, etc., and at least one divalent alcohol or dibasic acid is selected. And react.
[0021]
When diallyl phthalate resin, unsaturated polyester resin, or a combination of these is used for the core paper, an organic peroxide such as methyl ethyl ketone peroxide or benzoyl peroxide as a curing agent, a curing accelerator or a filler is added. . Furthermore, a polymerizable monomer such as styrene, orthochlorostyrene, diallyl phthalate monomer or methyl methacrylate may be added to improve curability, flowability, adhesion and the like.
[0022]
The phenol resin impregnated in the core paper is a resol type phenol resin obtained by dehydration reaction of phenols and aldehydes under a basic catalyst. The phenols are phenol, cresol, xylenol, octylphenol, phenylphenol, bisphenol A, bisphenol S. And bisphenol F, and the aldehydes include formalin, paraformaldehyde, glyoxal, and trioxal. Examples of the basic catalyst include alkali metals such as sodium and potassium, and alkaline earth metal oxides and hydroxides such as magnesium and calcium, and amines such as triethylamine and triethanolamine.
[0023]
When using the above-mentioned resin for decorative paper, face paper, core paper, and other decorative board, it is diluted with a solvent such as water, toluene, acetone, or methanol to adjust the viscosity and impregnated by means such as dipping or coating. Is done. The means is not particularly limited as long as the resin adheres sufficiently to the base paper and can be dried.
[0024]
[Action]
An embossed decorative board (9) obtained by laminating materials such as a shaping plate (8), resin-impregnated decorative paper, and a core material, and inserting between a pair of hot plates, followed by hot pressing, is a convex portion based on JIS Z 8741 ( The glossiness of 3a) is as low as 5 to 40 °, and the glossiness of the concave portion (4a) of the embossed decorative board (9) is 20 to 50 ° higher than the glossiness of the convex portion (3a). Combined with the difference in depth and glossiness, the result is a more three-dimensional finish.
[0025]
Moreover, since the convex part (3a) of the embossed decorative board (9) is obtained by transferring the concave part of the shaping plate (8) blasted so as to have smoothness and low gloss, it is resistant to contamination. It has a very low gloss change due to friction and can maintain its appearance immediately after hot pressing even when used for a long period of time.
[0026]
Hereinafter, the present invention will be described in detail based on examples.
【Example】
Example 1
After the ink was rubber-based resin to the base to form an etching resist layer subjected to pebbled pattern of the screen printing by using the surface of the SUS430 stainless steel plate shaping plate creation thickness 3 mm, nitric acid and a main agent ferric chloride A recess having a depth of 40 μm was formed by using an etching solution containing as an additive and processing based on an immersion method. Next, the etching resist layer was removed with acetone, the entire surface was buffed, and the blast resist layer was provided by screen printing using an ink based on a rubber-based resin on the convex portion. Next, glass beads having a particle size of 300 μm were projected from the nozzle of an air blasting device at a projection pressure of 3 kg / cm 2 so as to smooth the etching recess, and then the blast resist layer was removed with acetone to obtain a shaping plate.
Composition of resin for decorative paper Modified melamine-
[0027]
Comparative Example 1
In Example 1, except that the blast resist layer by screen printing was not provided, hot pressing was performed in the same manner as in Example 1 to obtain a decorative board of Comparative Example 1. When the surface immediately after molding of the decorative board of Comparative Example 1 was visually confirmed, there was no difference in gloss between the concave portion and the convex portion.
[0028]
Comparative Example 2
In Example 1, except that silica sand having a particle diameter of 300 μm was used instead of glass beads having a particle diameter of 300 μm, the decorative board of Comparative Example 2 was obtained by hot-pressure molding in the same manner as in Example 1. The smoothness of the rough surface was poor and it did not conform to the stain resistance of JIS K 6903, and the glossiness changed after 5000 abrasion tests.
[0029]
Comparative Example 3
In Example 1, the surface of a SUS430 stainless steel plate having a thickness of 3 mm was buffed and then screen-printed with a stone pattern using an ink based on a rubber-based resin to form an etching resist layer. Next, a recess having a depth of 50 μm was formed using an etching solution containing ferric chloride as a main component and nitric acid as an additive. Thereafter, the decorative plate of Comparative Example 3 was obtained by hot-pressure molding in the same manner as in Example 1 except that the plate obtained by removing the etching resist layer with acetone was used. The decorative board of Comparative Example 3 had a difference in gloss as in Example 1 and a three-dimensional appearance, but the convex part of the decorative board was obtained by transferring a random fine shape by etching the concave part of the plate. Therefore, it did not conform to the stain resistance of JIS K 6903, and the glossiness changed greatly after 5000 abrasion tests.
[0030]
The evaluation results are shown in Table 1.
[Table 1]
[0031]
The evaluation method was as follows.
Appearance immediately after molding: Embossed decorative board immediately after molding, the gloss of the surface of the decorative board is visually confirmed, and there is a difference in gloss between the concave and convex parts, and there is no difference in gloss between the concave and convex parts Was marked with x.
Appearance after 5000 times of wear resistance test: Check the gloss of the embossed decorative board after the test and the surface of the decorative board, and check the difference in gloss between the concave and convex parts. A case where the difference was slight was indicated by Δ, and a case where there was no difference in gloss between the concave portion and the convex portion was indicated by ×.
Wear resistance test: A 1 kg unglazed ashtray was reciprocated on the embossed decorative board and the surface of the decorative board at a speed of 10 m / min to make one reciprocation once.
Glossiness: Using a gloss meter GMX-101 type from Murakami Color Research Laboratory Co., Ltd. (Black-coated BK glass is used as a calibration standard plate. Both incident angle and light receiving angle are 60 °) The glossiness of the embossed concave part and the embossed convex part after the measurement was measured based on JIS Z 8741.
Contamination resistance: A test was conducted in accordance with JIS K 6902, and those that conformed to JIS K 6903 were marked as ◯, and those that did not conform were marked as ×.
[0032]
【The invention's effect】
Generally, the embossed decorative board has a large change in gloss of the convex part due to friction, but the gloss of the convex part (3a) is as low as 5 to 40 ° based on the production method of the present invention, and the concave part of the embossed decorative board (9). The embossed decorative board prepared so that the glossiness of (4a) is 20 to 50 ° higher than the glossiness of the convex portion (3a) not only looks good in design, but also contrasts between Example 1 and Comparative Example 2. As described above, the change in glossiness due to the friction of the embossed convex portion is extremely small, and the appearance at the beginning of production can be maintained even when used for a long time as a horizontal surface.
[0033]
Moreover, since the convex part of an embossing decorative board is a thing by which the concave part of the blasted shaping plate was transcribe | transferred so that it may be contrasted with the comparative example 3, it will be excellent in stain resistance.
[Brief description of the drawings]
FIG. 1 shows a cross-sectional view of an embossed decorative board (9).
FIG. 2 is a cross-sectional view when an etching resist layer (2) is formed on the surface of a stainless steel plate (1).
FIG. 3 shows a cross-sectional view when a recess (3) is formed by etching.
FIG. 4 is a cross-sectional view when the etching resist layer (2) is removed and a blast resist layer (5) is formed on the protrusions (4).
FIG. 5 shows a sectional view of a shaping plate (8) obtained by removing the blast resist layer (5) after blasting.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02323597A JP3928893B2 (en) | 1997-01-21 | 1997-01-21 | Embossed decorative board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02323597A JP3928893B2 (en) | 1997-01-21 | 1997-01-21 | Embossed decorative board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10202818A JPH10202818A (en) | 1998-08-04 |
| JP3928893B2 true JP3928893B2 (en) | 2007-06-13 |
Family
ID=12104957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02323597A Expired - Fee Related JP3928893B2 (en) | 1997-01-21 | 1997-01-21 | Embossed decorative board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3928893B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0519338A2 (en) | 2004-12-16 | 2009-01-20 | Flooring Ind Ltd | floor panel and method for manufacturing a floor panel |
| JP4778255B2 (en) * | 2005-04-06 | 2011-09-21 | アイカ工業株式会社 | Embossed decorative board |
| JP2008110495A (en) * | 2006-10-27 | 2008-05-15 | Daiso Co Ltd | Decorative layer structure and decorative board |
| JP2008110496A (en) * | 2006-10-27 | 2008-05-15 | Daiso Co Ltd | Shaping method for structure of decorative layer and method for producing decorative plate |
| JP6443191B2 (en) * | 2015-04-08 | 2018-12-26 | 住友ベークライト株式会社 | Melamine decorative board |
| CN113562983A (en) * | 2020-04-29 | 2021-10-29 | 北京小米移动软件有限公司 | Manufacturing method of glass cover plate, glass cover plate and terminal |
-
1997
- 1997-01-21 JP JP02323597A patent/JP3928893B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10202818A (en) | 1998-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102869499B (en) | For being attached to decorating film and the manufacture method thereof of household electrical appliance outer surface | |
| US4374886A (en) | Color registered decorative laminates | |
| US3648358A (en) | Process for texturing the surface of high pressure laminates | |
| JP3928893B2 (en) | Embossed decorative board | |
| US12605867B2 (en) | Method for producing a structuring agent for texturing an embossable material surface, in particular a resin-containing laminate surface, and structuring agent of this kind | |
| JP2001138470A (en) | Cosmetic material with wear resistance | |
| JP4778255B2 (en) | Embossed decorative board | |
| WO2000067981A1 (en) | Method of post-treatment of photofabricated object and mold | |
| JP3133476B2 (en) | Embossing plate, cosmetic material manufactured using the embossing plate, and method of manufacturing the embossing plate | |
| JP3479185B2 (en) | Grain processing method for molds for forming grain products | |
| JP2000141551A (en) | Precoated decorative paper | |
| EP0021588A1 (en) | No overlay decorative laminates coated with melamine-formaldehyde resin and methods for producing the same | |
| JPH10286932A (en) | Wear resistant cosmetic material | |
| JP2002326243A (en) | Fiber reinforced plastic plate and method for producing the same | |
| JPH041025A (en) | Embossing plate and preparation of embossed sheet having different gloss parts using the same | |
| JP3029563B2 (en) | Metal core double-sided decorative board | |
| JP2022051508A (en) | Decorative sheet and decorative board | |
| JP3876416B2 (en) | Incombustible decorative board | |
| JPH09193244A (en) | Embossing mold | |
| JP2009196247A (en) | Incombustible melamine decorative laminated sheet | |
| JP4269446B2 (en) | Thermosetting resin decorative board and method for producing the same | |
| JP3049695B2 (en) | Manufacturing method of thermosetting resin decorative board | |
| TWI887123B (en) | Imprint ink and imprint method using the same | |
| JP7632128B2 (en) | Resin composition for decorative board, decorative sheet, and decorative board | |
| JP2793611B2 (en) | Method for producing embossed decorative board tuned with diallyl phthalate resin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060411 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060414 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060519 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070302 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070302 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100316 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110316 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110316 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120316 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120316 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130316 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140316 Year of fee payment: 7 |
|
| LAPS | Cancellation because of no payment of annual fees |