JP6204054B2 - Mirror board and manufacturing method thereof - Google Patents

Mirror board and manufacturing method thereof Download PDF

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JP6204054B2
JP6204054B2 JP2013089419A JP2013089419A JP6204054B2 JP 6204054 B2 JP6204054 B2 JP 6204054B2 JP 2013089419 A JP2013089419 A JP 2013089419A JP 2013089419 A JP2013089419 A JP 2013089419A JP 6204054 B2 JP6204054 B2 JP 6204054B2
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大明 陳
大明 陳
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寧波東誠家居用品製造有限公司
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Description

本発明は鏡面ボード及びその製造方法に関し、特に表面の光沢度を大幅にアップさせるようにした鏡面ボード及び製造方法に関する。   The present invention relates to a specular board and a method for manufacturing the same, and more particularly to a specular board and a method for manufacturing the same that greatly increase the glossiness of the surface.

リビングテーブルやセンターテーブルなどの天板には木目の美しい鏡面ボードがよく用いられる。   Mirror boards with beautiful grain are often used for top boards such as living tables and center tables.

この鏡面ボードを製造する場合、天然の板材の表面にポリエステル樹脂塗料などを塗って硬化させ平滑に研磨するという作業を繰り返した後、最後にバフによって光沢研磨仕上げを行うようにした方法が知られている(特許文献1)。   When manufacturing this specular board, after repeating the work of applying a polyester resin paint etc. to the surface of a natural plate material, curing it and polishing it smoothly, and finally polishing the surface by buffing is known. (Patent Document 1).

しかし、この鏡面ボードでは板材の木目がそのまま見えるので、高級感のある木目鏡面ボードを製造する場合には木目の美しい高級な板材を使用する必要があってコスト高になる。   However, with this mirror board, the wood grain of the plate material can be seen as it is. Therefore, when producing a high-quality wood grain mirror board, it is necessary to use a high-quality board member with a beautiful grain, which increases the cost.

他方、中密度繊維板(以下、「MDF」という) の表面に下地塗料を塗布し、硬化後に研磨し、その上に天然木の木目模様を転写又は印刷した後、透明な仕上げ塗料を塗布し、硬化後に仕上げ研磨をして製造するようにした鏡面ボードが提案されている(特許文献2、特許文献3)。   On the other hand, a base paint is applied to the surface of a medium density fiberboard (hereinafter referred to as “MDF”), polished after curing, and after transferring or printing a natural wood grain pattern thereon, a transparent finish paint is applied. Mirror boards that have been manufactured by finishing polishing after curing have been proposed (Patent Documents 2 and 3).

しかし、この鏡面ボードでは天然木に樹脂塗料を塗布する場合に比較して安価であるものの、印刷層や転写層が非常に薄く、その木目模様から受ける印象が薄っぺらで天然木とは大きく相違し、見栄えの点で劣る。   However, although this mirror board is cheaper than when resin paint is applied to natural wood, the printed layer and transfer layer are very thin, and the impression received from the wood grain pattern is thin, so it differs greatly from natural wood. Inferior in appearance.

また、木目模様を有する厚さ0.15mm以上のメラミン樹脂シートを中密度繊維板に積層して高圧プレスすることによって、中密度繊維板の表面に厚さ0.1mm以上のメラミン樹脂層を形成し、メラミン樹脂層の上に厚さ0.05mm以上のポリウレタン樹脂塗膜を研磨・塗り重ねることによって0.1mm以上のポリウレタン樹脂の透明塗膜を形成し、このポリウレタン樹脂の透明塗膜の表面を鏡面仕上げするようにした鏡面ボードが提案されている(特許文献4)。   Also, a melamine resin layer with a thickness of 0.1 mm or more is formed on the surface of the medium density fiber board by laminating a melamine resin sheet having a wood grain pattern with a thickness of 0.15 mm or more on the medium density fiber board and high-pressure pressing. Then, a polyurethane resin coating film having a thickness of 0.1 mm or more is formed by polishing and coating a polyurethane resin coating film having a thickness of 0.05 mm or more on the melamine resin layer, and the surface of the transparent coating film of this polyurethane resin is formed. Has been proposed (Patent Document 4).

特開2006−181492号公報JP 2006-181492 A 特開2007−111859号公報JP 2007-1111859 A 特開2000−61392号公報JP 2000-61392 A 実用新案登録第3181575号公報Utility Model Registration No. 3181575

特許文献4記載の鏡面ボードでは特許文献1〜3記載の鏡面ボードに比較して表面の光沢度が優れているものの、光沢度をさらにアップすることが求められていた。   In the mirror board described in Patent Document 4, although the glossiness of the surface is superior to that of the mirror boards described in Patent Documents 1 to 3, it is required to further increase the glossiness.

本発明はかかる問題点に鑑み、表面光沢度を大幅にアップさせるようにした鏡面ボード及びその製造方法を提供することを課題とする。   This invention makes it a subject to provide the mirror surface board and its manufacturing method which were made to raise surface glossiness significantly in view of this problem.

そこで、本発明に係る鏡面ボードの製造方法は、ボードの表面には180g/m2以上のメラミン樹脂、離型剤及び艶出し剤を含む厚さ0.15mm以上のメラミン樹脂シートを重ね、該メラミン樹脂シートを鏡面加熱板によってメチロールメラミンの液化温度域のうちの130°C以下の設定温度に緩昇温し、該設定温度に所定時間保持した後、該設定温度から緩降温することによって、ボード表面に厚さ0.1mm以上の鏡面メラミン樹脂層(12)を形成するようにしたことを特徴とする。 Therefore, in the method for producing a specular board according to the present invention, a melamine resin sheet having a thickness of 0.15 mm or more containing a melamine resin of 180 g / m 2 or more, a release agent and a polish is laminated on the surface of the board, By slowly raising the temperature of the melamine resin sheet to a set temperature of 130 ° C or less of the liquefaction temperature range of methylolmelamine with a mirror heating plate, holding the set temperature for a predetermined time, and then slowly lowering the temperature from the set temperature, A mirror surface melamine resin layer (12) having a thickness of 0.1 mm or more is formed on the board surface.

また、本発明に係る鏡面ボードは、ボードの表面には180g/m2以上のメラミン樹脂を含む厚さ0.15mm以上のメラミン樹脂シートが重ねられ、鏡面加熱板によってメチロールメラミンの液化温度域のうちの130°C以下の設定温度に緩昇温されて保持され緩降温されることによって、厚さ0.1mm以上の鏡面メラミン樹脂層(12)が形成されていることを特徴とする。 In addition, the mirror board according to the present invention has a melamine resin sheet having a thickness of 0.15 mm or more containing a melamine resin of 180 g / m 2 or more on the surface of the board, and the temperature of the liquefaction temperature range of methylol melamine by a mirror heating plate. A mirror surface melamine resin layer (12) having a thickness of 0.1 mm or more is formed by slowly raising the temperature to a set temperature of 130 ° C. or less and holding it slowly.

本発明の特徴の1つは180g/m2以上、好ましくは200g/m2以上のメラミン樹脂と離型剤及び艶出し剤とを含む厚さ0.15mm以上のメラミン樹脂シートを鏡面加熱板によってメチロールメラミンの液化温度域のうちの130°C以下の設定温度に緩昇温し、その設定温度に保持した後、緩降温させることによって、厚さ0.1mm以上の鏡面メラミン樹脂層を形成するようにした点にある。 One of the features of the present invention is that a melamine resin sheet having a thickness of 0.15 mm or more containing a melamine resin of 180 g / m 2 or more, preferably 200 g / m 2 or more, a release agent and a polish is formed by a mirror heating plate. A mirror surface melamine resin layer having a thickness of 0.1 mm or more is formed by slowly raising the temperature to a set temperature of 130 ° C. or less in the liquefaction temperature range of methylolmelamine, keeping the set temperature, and then gradually lowering the temperature. It is in the point which did.

こうして得られた鏡面メラミン樹脂層の光沢度は特許文献4記載のボードに比較して大幅にアップしており、非常に美麗な鏡面ボードが製造できる。また、特許文献4記載の鏡面ボードの場合のようにポリウレタン樹脂を塗布し研磨し塗り重ねるという工程が不要となり、低コスト化を実現できる。   The glossiness of the mirror surface melamine resin layer thus obtained is significantly higher than that of the board described in Patent Document 4, and a very beautiful mirror surface board can be produced. Further, the process of applying polyurethane resin, polishing and recoating as in the case of the specular board described in Patent Document 4 is not required, and cost reduction can be realized.

さらに、メラミン樹脂が表面に現れるので、硬度が高く、耐熱性・耐火性に優れた鏡面ボードが得られる。   Further, since the melamine resin appears on the surface, a mirror board having high hardness and excellent heat resistance and fire resistance can be obtained.

メラミン樹脂シートには離型剤と艶出し剤を含有させているので、例えばポリシリコンを適量含有させているので、鏡面加熱板からの離型性をアップさせることができ、さらには艶出し剤が鏡面メラミン樹脂層の表面の艶を向上させるとともに平滑度を向上させ、これによって鏡面メラミン樹脂層の光沢度を大幅にアップさせることができる。また、メラミン樹脂シートと木製ボードの接着性を向上させる上で、メラミン樹脂シートには接着剤を含有させるのがよい。   Since the melamine resin sheet contains a release agent and a polishing agent, for example, it contains an appropriate amount of polysilicon, so that the release property from the mirror heating plate can be improved, and further the polishing agent. However, the surface gloss of the mirror surface melamine resin layer is improved and the smoothness is improved, whereby the glossiness of the mirror surface melamine resin layer can be greatly increased. Moreover, when improving the adhesiveness of a melamine resin sheet and a wooden board, it is good to make a melamine resin sheet contain an adhesive agent.

具体的には、メラミン樹脂シートを3.5°/分〜4.5°/分の範囲内の上昇率でもって115°C〜125°Cの範囲内の設定温度まで昇温し、該設定温度に所定時間保持した後、設定温度から3.5°/分〜4.5°/分の範囲内の下降率でもって降温させることによって、鏡面メラミン樹脂層を木製ボード又は防火板の表面に形成することができる。   Specifically, the melamine resin sheet is heated to a set temperature within a range of 115 ° C. to 125 ° C. with a rate of increase within a range of 3.5 ° / min to 4.5 ° / min, and the setting is performed. After maintaining the temperature for a predetermined time, the mirror surface melamine resin layer is applied to the surface of the wooden board or fire prevention board by lowering the temperature from the set temperature with a rate of fall within the range of 3.5 ° / min to 4.5 ° / min. Can be formed.

ボードの裏面はボード面を露出させてもよいが、メラミン樹脂シートを重ね、加熱板によって加熱してメラミン樹脂層を形成するようにしてもよい。   The back surface of the board may expose the board surface, but a melamine resin sheet may be stacked and heated by a heating plate to form a melamine resin layer.

また、メラミン樹脂ボードは無地であってもよいが、木目模様を形成してもよい。すなわち、メラミン樹脂シートには木目模様を形成することもできる。   Moreover, although a melamine resin board may be plain, it may form a wood grain pattern. That is, a wood grain pattern can be formed on the melamine resin sheet.

メラミン樹脂シートはメチロールメラミンを溶剤に溶かし、紙などの充填剤に含浸させたもので、このメラミン樹脂シートを加熱すると、メチロールメラミンが重縮合を起こし架橋することで熱硬化性のメラミン樹脂となる。   The melamine resin sheet is made by dissolving methylol melamine in a solvent and impregnating with a filler such as paper. When this melamine resin sheet is heated, the methylol melamine undergoes polycondensation and crosslinks to become a thermosetting melamine resin. .

本発明に係る鏡面ボードの実施形態を示す概略斜視図である。It is a schematic perspective view which shows embodiment of the mirror surface board which concerns on this invention. 上記実施形態を示す要部断面図である。It is principal part sectional drawing which shows the said embodiment.

以下、本発明を図面に示す具体例に基づいて詳細に説明する。図1及び図2は本発明に係る鏡面ボードの好ましい実施形態を示す。図において、鏡面ボード10はMDF11をベースに製造されている。このMDF11の表面及び裏面には厚さ0.1mm程度の鏡面メラミン樹脂層12及びメラミン樹脂層13が形成されている。   Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 and 2 show a preferred embodiment of a specular board according to the present invention. In the figure, the mirror surface board 10 is manufactured based on the MDF 11. A mirror surface melamine resin layer 12 and a melamine resin layer 13 having a thickness of about 0.1 mm are formed on the front and back surfaces of the MDF 11.

本例の鏡面ボード10を製造する場合、例えば200g/m2のメラミン樹脂を含有し表面に木目模様が形成された厚さ0.15mmのメラミン樹脂シートを準備する。このメラミン樹脂シートにはポリシリコン(離型剤兼艶出し剤)及び接着剤が適量含有されている。このメラミン樹脂シートをMDF11の表面及び裏面に木目が外側になるように重ねる。 When manufacturing the mirror board 10 of this example, for example, a melamine resin sheet having a thickness of 0.15 mm containing 200 g / m 2 of melamine resin and having a grain pattern formed on the surface is prepared. This melamine resin sheet contains appropriate amounts of polysilicon (release agent / glazing agent) and adhesive. This melamine resin sheet is overlaid on the front and back surfaces of the MDF 11 so that the grain is on the outside.

次に、メラミン樹脂シートを積層したMDF11を2枚のステンレス板で上下から挟む。このステンレス板には加熱冷却用の媒体を流通させるパイプなどの加熱冷却システムが設けられている。また、上側のステンレス板には表面を鏡面仕上げした鏡面ステンレス板を用いる。このステンレス板によってメラミン樹脂シートを80°Cから加熱し始め、メラミン樹脂シートのメチロールメラミンが液化する温度域のうちの低温度、例えば120°Cの設定温度まで10分かけて昇温し、この120°Cの温度に10分間保持した後、今度は10分かけて120°Cから80°Cまで降温する。   Next, MDF11 laminated with a melamine resin sheet is sandwiched from above and below by two stainless steel plates. The stainless steel plate is provided with a heating / cooling system such as a pipe for circulating a heating / cooling medium. The upper stainless steel plate is a mirror stainless steel plate having a mirror finished surface. With this stainless steel plate, the melamine resin sheet starts to be heated from 80 ° C., and is heated up to a low temperature in the temperature range where the methylol melamine of the melamine resin sheet liquefies, for example, a set temperature of 120 ° C. over 10 minutes. After maintaining at a temperature of 120 ° C. for 10 minutes, the temperature is lowered from 120 ° C. to 80 ° C. over 10 minutes.

すると、メラミン樹脂シートのメチロールメラミンがゆっくりとかつ均一に液化してMDF11に貼り付き、接着剤層によって強固に貼着されるとともに、メチロールメラミンが重縮合を起こし架橋することで熱硬化性のメラミン樹脂となるが、ゆっくりと液化させ重縮合させているので、メラミン樹脂層12、13は均一な厚さとなる。   Then, the methylol melamine of the melamine resin sheet slowly and uniformly liquefies and adheres to the MDF 11 and is firmly adhered by the adhesive layer, and the methylol melamine undergoes polycondensation and crosslinks to form a thermosetting melamine. Although it becomes a resin, since it is slowly liquefied and polycondensed, the melamine resin layers 12 and 13 have a uniform thickness.

しかも、上側のメラミン樹脂シートにはポリシリコンが含有されているので、ポリシリコンがメラミン樹脂層12の表面に回り込み、メラミン樹脂層12が鏡面ステンレス板から綺麗に離型するとともに、表面に艶を与え、平滑な表面を構成する。また、ステンレス板の温度が120°Cまでであるので、メラミン樹脂層12が過熱されて焦げることもなく、くもり、傷、焦げつきのない美麗で光沢度の高い木目鏡面メラミン樹脂層12を有する鏡面ボード10が得られる。   In addition, since the upper melamine resin sheet contains polysilicon, the polysilicon wraps around the surface of the melamine resin layer 12, and the melamine resin layer 12 is beautifully released from the mirror surface stainless steel plate and has a glossy surface. To give a smooth surface. Further, since the temperature of the stainless steel plate is up to 120 ° C., the melamine resin layer 12 is not overheated and burnt, and the mirror surface having a beautiful and high-gloss wood surface melamine resin layer 12 that is not cloudy, scratched or burnt. A board 10 is obtained.

比較のために、メラミン樹脂層の上にポリウレタン樹脂層を積層して鏡面仕上げをしてPU樹脂製鏡面ボードを、ポリウレタン樹脂層の上に紫外線硬化型樹脂層を形成して鏡面仕上げをしたUV樹脂製鏡面ボードを製作し、本例の鏡面ボードと比較した。   For comparison, a polyurethane resin layer is laminated on the melamine resin layer and mirror finished to form a PU resin mirror board, and a UV curable resin layer is formed on the polyurethane resin layer to mirror finish UV. A resin mirror board was manufactured and compared with the mirror board of this example.

(光沢度)
市販の光沢度計を用いて光沢度を測定したところ、PU樹脂製鏡面ボードの光沢度が70〜90度、UV樹脂製鏡面ボードが95〜105度であるのに対し、本例の鏡面ボードの光沢度はUV樹脂製鏡面ボードと同程度の95〜105度であり、光沢度が非常に優れていることが確認された。
(Glossiness)
When the glossiness was measured using a commercially available glossmeter, the glossiness of the PU resin mirrorboard was 70 to 90 degrees and the UV resin mirrorboard was 95 to 105 degrees, whereas the mirrorboard of this example The glossiness is 95 to 105 degrees, which is about the same as that of a UV resin mirror surface board, and it was confirmed that the glossiness is very excellent.

(硬度)
また、市販の硬度計を用い、UV樹脂製鏡面ボード及び本例の鏡面ボードの硬度を測定したところ、UV樹脂製鏡面ボードが2〜3Hであるのに対し、本例の鏡面ボードは7〜9Hであり、高硬度が得られることが確認された。
(hardness)
Moreover, when the hardness of the UV resin mirror board and the mirror board of this example was measured using a commercially available hardness meter, the UV resin mirror board was 2 to 3 H, whereas the mirror board of this example was 7 to It was 9H, and it was confirmed that high hardness was obtained.

(磨耗強さ)
さらに、市販の耐磨耗計を用いてUV樹脂製鏡面ボード及び本例の鏡面ボードの耐磨耗性を試験したところ、UV樹脂製鏡面ボードが1000回程度であるのに対し、本例の鏡面ボードは2000〜3000回の磨耗強さがあることが確認された。なお、上記の光沢度、硬度及び磨耗強さは本例の鏡面ボードと他の鏡面ボードの相対的な比較値を示すものである。
(Abrasion strength)
Further, when the abrasion resistance of the UV resin mirror board and the mirror board of this example was tested using a commercially available abrasion meter, the UV resin mirror board was about 1000 times, whereas the UV resin mirror board was about 1000 times. It was confirmed that the specular board had a wear strength of 2000 to 3000 times. In addition, said glossiness, hardness, and abrasion strength show the relative comparison value of the mirror board of this example, and another mirror board.

(不燃性)
また、本例の鏡面ボードに120°Cまで加熱したところ、ほとんど着火せず、優れた不燃性があることが確認された。
(Non Flammable)
Moreover, when the mirror board of this example was heated to 120 ° C., it was confirmed that there was almost no ignition and excellent nonflammability.

なお、比較のため、ミラミン樹脂シートのメラミン樹脂の量を120〜140g/m2として本例と同様に鏡面ボードを製造したが、本例ほどの光沢度を得られなかった。 For comparison, a mirror board was produced in the same manner as in this example with the amount of melamine resin in the miramine resin sheet being 120 to 140 g / m 2 , but the glossiness as in this example was not obtained.

本例の木目鏡面ボード10は家具や内装建材など、木板を使用するあらゆる用途に木板の代用品として用いることができる。   The wood grain specular board 10 of this example can be used as a substitute for a wood board for any application that uses a wood board, such as furniture and interior building materials.

なお、上記の例では木目鏡面メラミン樹脂層を形成するようにしたが、無地の鏡面メラミン樹脂層を形成するようにしてもよい。また、MDFに代え、合板やパーティクルボードなどのボードを用いることができ、又コンクリートと石英砂などの材料を積層した防火板などのボードを用いることもできる。   In the above example, the wood-mirror surface melamine resin layer is formed, but a plain mirror surface melamine resin layer may be formed. Moreover, it can replace with MDF and can use boards, such as a plywood and a particle board, and can also use boards, such as a fire prevention board which laminated | stacked materials, such as concrete and quartz sand.

さらに、上記の例ではメラミン樹脂シートに、離型剤兼艶出し剤としてポリシリコンを含有させたが、例えばウレタン系の離型剤とシリコン系の艶出し剤を含有させるようにしてもよい。   Furthermore, in the above example, polysilicon is contained in the melamine resin sheet as a release agent and polish, but, for example, a urethane release agent and a silicon polish may be contained.

10 鏡面ボード
11 MDF(木製ボード)
12、13 メラミン樹脂層
10 Mirror board 11 MDF (wooden board)
12, 13 Melamine resin layer

Claims (5)

ボード(11)の表面には180g/m2以上のメラミン樹脂、離型剤及び艶出し剤を含む厚さ0.15mm以上のメラミン樹脂シートを重ね、
該メラミン樹脂シートを鏡面加熱板によってメチロールメラミンの液化温度域のうちの130°C以下の設定温度に緩昇温し、該設定温度に所定時間保持した後、該設定温度から緩降温することによって、ボード(11)表面に厚さ0.1mm以上の鏡面メラミン樹脂層(12)を形成し、上記鏡面加熱板、離型剤及び艶出し剤によって上記鏡面メラミン樹脂層(12)に光沢度及び平滑性を付与するとともに該鏡面メラミン樹脂層(12)によって硬度、磨耗強さ、耐熱性及び耐火性を付与した鏡面ボードを製造するようにしたことを特徴とする鏡面ボードの製造方法。
On the surface of the board (11), a melamine resin sheet having a thickness of 0.15 mm or more containing a melamine resin of 180 g / m 2 or more, a release agent and a polishing agent,
By slowly raising the temperature of the melamine resin sheet to a set temperature of 130 ° C. or less of the liquefaction temperature range of methylol melamine with a mirror surface heating plate, holding the set temperature for a predetermined time, and then gradually lowering the temperature from the set temperature The mirror surface melamine resin layer (12) having a thickness of 0.1 mm or more is formed on the surface of the board (11) , and the mirror surface melamine resin layer (12) has a glossiness and A method for producing a specular board, characterized in that a specular board is imparted with hardness, abrasion strength, heat resistance and fire resistance by means of the specular melamine resin layer (12) while imparting smoothness .
上記メラミン樹脂シートを3.5°/分〜4.5°/分の範囲内の上昇率でもって115°C〜125°Cの範囲内の設定温度まで昇温し、所定時間保持した後、上記設定温度から3.5°/分〜4.5°/分の範囲内の下降率でもって降温するようにした請求項1記載の鏡面ボードの製造方法。   The melamine resin sheet was heated up to a set temperature within a range of 115 ° C to 125 ° C with an increase rate within a range of 3.5 ° / min to 4.5 ° / min, and held for a predetermined time, 2. The method of manufacturing a specular board according to claim 1, wherein the temperature is lowered from the set temperature with a descending rate within a range of 3.5 [deg.] / Min to 4.5 [deg.] / Min. ボード(11)の表面に180g/m2以上のメラミン樹脂、離型剤及び艶出し剤を含む厚さ0.15mm以上のメラミン樹脂シートを原料とする厚さ0.1mm以上の鏡面メラミン樹脂層(12)を有し、製造に用いられた鏡面加熱板、上記離型剤及び艶出し剤によって上記鏡面メラミン樹脂層(12)に光沢度及び平滑性が付与されるとともに、該鏡面メラミン樹脂層(12)によって硬度、磨耗強さ、耐熱性及び耐火性が付与されていることを特徴とする鏡面ボード。 A mirror surface melamine resin layer having a thickness of 0.1 mm or more using a melamine resin sheet having a thickness of 0.15 mm or more containing a melamine resin of 180 g / m 2 or more , a release agent and a polish on the surface of the board (11). The mirror surface melamine resin layer (12) having glossiness and smoothness is imparted to the mirror surface melamine resin layer (12) by the mirror surface heating plate used in the production, the release agent and the polishing agent. A mirror board characterized by having hardness, wear strength, heat resistance and fire resistance given by (12) . ボード(11)の裏面にメラミン樹脂シートを原料とするメラミン樹脂層(13)を有する請求項3記載の鏡面ボード。 The mirror surface board of Claim 3 which has a melamine resin layer (13) which uses a melamine resin sheet as a raw material on the back surface of a board (11). 上記メラミン樹脂シートは木目模様を有する請求項3又は4記載の鏡面ボード。 The melamine resin sheet specular board according to claim 3 or 4 wherein has a grain pattern.
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