JP5456446B2 - Decorative board base paper and decorative board - Google Patents
Decorative board base paper and decorative board Download PDFInfo
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- JP5456446B2 JP5456446B2 JP2009264045A JP2009264045A JP5456446B2 JP 5456446 B2 JP5456446 B2 JP 5456446B2 JP 2009264045 A JP2009264045 A JP 2009264045A JP 2009264045 A JP2009264045 A JP 2009264045A JP 5456446 B2 JP5456446 B2 JP 5456446B2
- Authority
- JP
- Japan
- Prior art keywords
- decorative board
- base paper
- paper
- board base
- hot water
- Prior art date
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 54
- 229920000877 Melamine resin Polymers 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 35
- 239000007864 aqueous solution Substances 0.000 claims description 26
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920001131 Pulp (paper) Polymers 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000000123 paper Substances 0.000 description 86
- 239000002585 base Substances 0.000 description 65
- 238000005470 impregnation Methods 0.000 description 33
- 239000000243 solution Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 18
- 239000011248 coating agent Substances 0.000 description 17
- 238000000576 coating method Methods 0.000 description 17
- 238000000465 moulding Methods 0.000 description 15
- CBMPTFJVXNIWHP-UHFFFAOYSA-L disodium;hydrogen phosphate;2-hydroxypropane-1,2,3-tricarboxylic acid Chemical compound [Na+].[Na+].OP([O-])([O-])=O.OC(=O)CC(O)(C(O)=O)CC(O)=O CBMPTFJVXNIWHP-UHFFFAOYSA-L 0.000 description 13
- 239000007788 liquid Substances 0.000 description 11
- 239000004640 Melamine resin Substances 0.000 description 10
- 239000002655 kraft paper Substances 0.000 description 9
- 238000007731 hot pressing Methods 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 239000000049 pigment Substances 0.000 description 7
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 6
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 6
- 229920002401 polyacrylamide Polymers 0.000 description 6
- 229910001388 sodium aluminate Inorganic materials 0.000 description 6
- 239000012752 auxiliary agent Substances 0.000 description 5
- 239000000701 coagulant Substances 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 5
- 239000011121 hardwood Substances 0.000 description 5
- 239000013054 paper strength agent Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 239000011122 softwood Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Landscapes
- Paper (AREA)
Description
本発明は、化粧板原紙及び化粧板に関する。 The present invention relates to a decorative board base paper and a decorative board.
テーブルや家具や床材などに使われるメラミン化粧板はその熱圧成型時の圧力により、高
圧メラミン化粧板（７０〜１２０ｋｇｆ／ｃｍ２）と低圧メラミン化粧板（１０〜４０ｋ
ｇｆ／ｃｍ２）に分けられる。高圧メラミン化粧板は上層と下層にそれぞれメラミン樹脂
を含浸した化粧板原紙１枚づつと中層にフェノール樹脂を含浸したコア紙を５枚積層し、
最外層にメラミンを含浸したオーバーレイ紙を１枚づつ積層して製造される。低圧メラミ
ン化粧板はパーティクルボードや合板に代表される木質系ボードにメラミン樹脂を含浸し
た化粧板原紙を貼り合わせることにより製造されている。木質ボードにメラミン樹脂を含
浸した化粧板原紙１枚を表面に、木質ボードの裏側にバランス紙を１枚熱圧成型して貼り
合わせる（特許文献１）。
Melamine decorative panels used for tables, furniture, flooring, etc., are produced by high pressure melamine decorative panels (70 to 120 kgf / cm 2 ) and low pressure melamine decorative panels (10 to 40 k), depending on the pressure during hot pressing.
gf / cm 2 ). The high-pressure melamine decorative board is made by laminating 5 sheets of decorative paper base paper impregnated with melamine resin in the upper layer and lower layer respectively and 5 core paper impregnated with phenolic resin in the middle layer,
It is manufactured by laminating one overlay paper impregnated with melamine in the outermost layer. The low-pressure melamine decorative board is manufactured by bonding a decorative board base paper impregnated with a melamine resin to a wooden board represented by particle board or plywood. One sheet of decorative board base paper impregnated with a melamine resin on a wooden board is bonded to the surface and one balance paper on the back side of the wooden board by hot pressing (Patent Document 1).
厳しい世界情勢の中、様々な商品の競争が激化しており、化粧板も勝ち残るために新たな
付加価値をもったメラミン化粧板が様々提案されている。
In the harsh global situation, competition for various products has intensified, and various melamine decorative boards with new added value have been proposed in order to survive.
高圧メラミン化粧板に付加価値としてポストフォーム性を付与することが提案されている
（特許文献２及び特許文献３）。
It has been proposed to impart post-form properties as an added value to a high-pressure melamine decorative board (Patent Documents 2 and 3).
高圧メラミン化粧板に使用されるオーバーレイ紙に光沢付与物質を抄き混むことが提案さ
れている（特許文献４）。ただこれだと光沢付与物質が高価であることやメラミン含浸工
程で光沢付与物質の脱落が問題になる場合がある。
It has been proposed that a gloss-imparting material is mixed with overlay paper used for a high-pressure melamine decorative board (Patent Document 4). However, if this is the case, the gloss-imparting material may be expensive, and the loss of the gloss-imparting material may become a problem in the melamine impregnation process.
低圧メラミン化粧板で立体感を出すためのインキが提案されている（特許文献５）。 An ink for producing a three-dimensional effect with a low-pressure melamine decorative board has been proposed (Patent Document 5).
耐摩耗性と施工性を両立した低圧メラミン化粧板が提案されている（特許文献６）。 A low-pressure melamine decorative board that has both wear resistance and workability has been proposed (Patent Document 6).
化粧板の耐熱耐水接着性を向上させる方法として、化粧紙に塩化アンモニウムをグラビア
コートし、更にエチレン酢酸ビニル樹脂を押し出しラミネートし、更にメラミン樹脂を塗
布したものが提案されている（特許文献７）。
As a method for improving the heat-resistant and water-resistant adhesion of a decorative board, there has been proposed a technique in which ammonium chloride is gravure coated on decorative paper, further laminated with an ethylene vinyl acetate resin, and further coated with a melamine resin (Patent Document 7). .
低圧メラミン化粧板に高級感を持たせる公知の方法として、熱圧成型プレス板を艶有り仕
様の金属板にして熱圧成型すると高光沢が得られるが、それではまだ不十分である。高光
沢付与物質を塗工した化粧板原紙を用いるとコスト的な問題や高光沢付与物質のメラミン
含浸工程での脱落が問題となる場合がある。高光沢付与物質を内添したオーバーレイ紙を
使用すると、そのオーバーレイ含浸紙自体のコストと成型時にオーバーレイ紙と化粧板原
紙の２枚積層せねばならず生産性低下により大幅なコストアップとなる。化粧板原紙１枚
を変更するだけで、それまでと同様な設備で高光沢の低圧メラミン化粧板の製造が可能と
なる安価な化粧板原紙が待ち望まれている。
As a publicly known method for giving a low-pressure melamine decorative board a high-grade feeling, a high-gloss can be obtained by hot-press molding using a hot-press molding press plate as a glossy metal plate, but this is still insufficient. When the decorative board base paper coated with the high gloss imparting substance is used, there may be a problem in terms of cost and dropping of the high gloss imparting substance in the melamine impregnation step. When an overlay paper containing a high gloss imparting substance is used, the cost of the overlay impregnated paper itself and two sheets of overlay paper and decorative board base paper must be laminated at the time of molding, resulting in a significant cost increase due to a decrease in productivity. There is a demand for an inexpensive decorative board base paper that can produce a high-gloss low-pressure melamine decorative board with the same equipment as before, by changing only one decorative board base paper.
また、低圧メラミン化粧板の熱圧成形時間は６０秒程度が主流だが、生産効率アップの為
、熱圧成形時間を短くできる化粧板原紙が待ち望まれている。
Moreover, the hot press molding time of the low-pressure melamine decorative board is mainly about 60 seconds, but a decorative board base paper that can shorten the hot press molding time is awaited in order to increase production efficiency.
本発明は、従来技術の持つ欠点を克服し、化粧板原紙の熱水ｐＨの中性を維持しつつ、高
光沢で熱圧成形時間を短縮できる化粧板、特に低圧メラミン化粧板の製造が可能となる化
粧板原紙を提供することを課題とする。
The present invention overcomes the disadvantages of the prior art and enables the production of a decorative board, particularly a low-pressure melamine decorative board, which can reduce hot press molding time while maintaining the neutrality of hot water pH of the decorative board base paper. It is an object to provide a decorative board base paper.
本発明者らは、かかる課題を解決するため、特定のベースの化粧板原紙に特定の弱酸塩を外添することにより、化粧板原紙の熱水ｐＨの中性を維持しつつ、低圧メラミン化粧板を高光沢にでき、且つ熱圧成形時間を短縮できることを見いだし、本発明を完成するに至った。
すなわち本発明は、
（１）木材パルプを主成分とし二酸化チタンが内添された化粧板原紙において、紙の熱水ｐＨが６．５〜７．８に調整されたベースの化粧板原紙に、クエン酸とリン酸水素２ナトリウムのｐＨが２．５〜４．５の混合水溶液を外添し、外添乾燥後の紙の熱水ｐＨが６．０〜７．５の範囲になるよう混合水溶液の外添乾燥付着量を０．３〜１．０ｇ／ｍ２に調整された化粧板原紙。
（２）（１）の化粧板原紙を用いて作製する低圧メラミン化粧板の製造方法。
In order to solve such a problem, the present inventors externally added a specific weak acid salt to a specific base decorative board base paper, thereby maintaining the neutrality of the hot water pH of the decorative base board paper and reducing the low-pressure melamine makeup. It has been found that the plate can be made highly glossy and the hot pressing time can be shortened, and the present invention has been completed.
That is, the present invention
(1) In a decorative board base paper mainly composed of wood pulp and containing titanium dioxide , citric acid and phosphoric acid are added to the base decorative board base paper whose hot water pH is adjusted to 6.5 to 7.8. the pH of the disodium hydrogen is externally added a mixed aqueous solution of 2.5 to 4.5, external addition drying the mixed aqueous solution to hydrothermal pH paper after external addition drying is in the range of 6.0 to 7.5 A decorative board base paper whose adhesion amount is adjusted to 0.3 to 1.0 g / m 2 .
(2) A method for producing a low-pressure melamine decorative board produced using the decorative board base paper of (1) .
本発明によれば、低圧メラミン化粧板にしたときに高光沢が発現し、熱圧成形時間が短縮
できる安価な低圧メラミン化粧板原紙が提供される。さらに、ベースとなる化粧板原紙の
ｐＨを調整することで、原紙に酸を添加しても中性となるように制御した高光沢な化粧板
原紙を提供可能となった。
According to the present invention, there is provided an inexpensive low-pressure melamine decorative board base paper that exhibits high gloss when made into a low-pressure melamine decorative board and can shorten the hot pressing time. Furthermore, by adjusting the pH of the base decorative board base paper, it has become possible to provide a high gloss decorative base paper that is controlled to be neutral even when acid is added to the base paper.
以下、本発明を詳細に説明する。 本発明で用いられる原紙は、木材パルプを主成分とす
るものである。 使用できるパルプとしては、ＮＢＫＰ、ＮＢＳＰ、ＬＢＫＰ、ＬＢＳＰ
等が挙げられるが、特にＬＢＫＰ単独或いはＮＢＫＰとＬＢＫＰを混合して使用すること
が好ましい。
Hereinafter, the present invention will be described in detail. The base paper used in the present invention is based on wood pulp. The usable pulp is NBKP, NBSP, LBKP, LBSP.
In particular, it is preferable to use LBKP alone or a mixture of NBKP and LBKP.
パルプはろ水度を４００〜５５０ｍｌＣＳＦに叩解する。叩解する方法としては公知のも
のであれば特に限定するものでなく、例としてはビーターやダブルディスクリファイナー
やコニカルリファイナーやシンリンダーリファイナーが挙げられる。
The pulp is beaten to a freeness of 400-550 ml CSF. The beating method is not particularly limited as long as it is known, and examples include a beater, a double disc refiner, a conical refiner, and a cinder refiner.
紙に化粧板原紙としての特性を持たせるため、遮蔽剤である２酸化チタンを添加する。ま
た、意匠性を持たせるために公知の顔料や染料や意匠材料を添加することも可能である。
顔料としては例えば弁柄（酸化鉄）がある。
Titanium dioxide, which is a shielding agent, is added to give the paper characteristics as a decorative base paper. Moreover, it is also possible to add a well-known pigment, dye, and design material in order to give designability.
An example of the pigment is a petrol (iron oxide).
また公知の製紙薬品を内添する。例えば湿潤紙力増強剤であるポリアクリルアミドエピク
ロロヒドリンがある。その他の助剤を添加しても良い。
Also, known papermaking chemicals are internally added. For example, there is polyacrylamide epichlorohydrin which is a wet paper strength enhancer. Other auxiliaries may be added.
紙の原料は最終的には化粧板原紙の熱水ｐＨが６．５〜７．８になるよう公知のｐＨ調整剤で調整する。公知の酸としては硫酸アルミニウムが、アルカリとしてはアルミン酸ナトリウムが例示される。 The raw material of the paper finally has a hot water pH of 6. 5-7. 8 with a known pH adjusting agent. The known acid is exemplified by aluminum sulfate, and the alkali is exemplified by sodium aluminate.
上記の方法で作製した紙料を公知の抄造法で紙にする。具体的には長網抄紙機による抄造
法がある。
The stock prepared by the above method is made into paper by a known papermaking method. Specifically, there is a paper making method using a long net paper machine.
弱酸塩を付与する方法としては公知の外添方法であればよく、ディッピング含浸、サイズ
プレス含浸、塗工、スプレーが挙げられる。含浸による付与が好ましい。
The method for applying the weak acid salt may be a known external addition method, and includes dipping impregnation, size press impregnation, coating, and spraying. Application by impregnation is preferred.
外添する弱酸塩はその水溶液が弱酸性であれば特に制限はなく、例えば、クエン酸とリン酸水素２ナトリウムとの混合水溶液が例示される。更に具体的には、クエン酸のモル数をリン酸水素２ナトリウムのモル数で割ったモル比がクエン酸／リン酸水素２ナトリウム＝１．３９で、０．９％水溶液のｐＨ３．４が例示される。高光沢を発現させるためには、弱酸塩水溶液のｐＨは、２．５〜４．５が好ましい。 Weak acid salt of externally added is an aqueous solution thereof is not particularly limited as long as it is mildly acidic, for example, a mixed aqueous solution of citric acid and disodium hydrogen phosphate are exemplified. More specifically, the molar ratio obtained by dividing the number of moles of citric acid by the number of moles of disodium hydrogen phosphate is citric acid / disodium hydrogen phosphate = 1.39, and the pH of the 0.9% aqueous solution is 3.4. Illustrated. In order to develop high gloss, the pH of the weak acid salt aqueous solution is preferably 2.5 to 4.5.
得られる化粧板原紙の熱水ｐＨが６．０〜７．５になるように、その弱酸塩の外添付着量
を０．３〜１．０ｇ／ｍ２に調整する。
The outer attached amount of the weak acid salt is adjusted to 0.3 to 1.0 g / m 2 so that the hot water pH of the obtained decorative base paper is 6.0 to 7.5.
一般的に低圧メラミン化粧板用の化粧板原紙の熱水ｐＨは中性領域（７．０±１．０）の
品質が求められる。熱水ｐＨが６．０未満だと、化粧板原紙を長期保存した場合に黄変に
より色相が変わってしまう場合がある。メラミンを含浸してからのメラミン含浸紙として
のポットライフが短くなってしまう場合がある。逆に熱水ｐＨが７．５より高いと熱圧成
形時間を長く取らなければならない場合がある。
Generally, the hot water pH of the decorative board base paper for the low-pressure melamine decorative board is required to be in the neutral range (7.0 ± 1.0). If the hot water pH is less than 6.0, the hue may change due to yellowing when the decorative board base paper is stored for a long period of time. The pot life as melamine impregnated paper after impregnating melamine may be shortened. Conversely, if the hot water pH is higher than 7.5, the hot pressing time may have to be taken longer.
低圧メラミン化粧板は公知の作り方であれば特に問題はない。具体的には以下の工程で製
造される。
The low-pressure melamine decorative board is not particularly problematic as long as it is a known method. Specifically, it is manufactured by the following steps.
化粧板原紙にメラミン樹脂或いはユリア樹脂を含浸するか、或いはユリア樹脂を含浸した
後、更にメラミン樹脂を含浸する２段含浸がある。含浸樹脂の例示としては主剤としてマ
ドリットＭＷ５５９（メラミン樹脂、ヘキスト製）１００部と、硬化剤としてマドリッド
ハードナーＭＨ８３５（ヘキスト製）０．２部、浸透剤としてハイバザールＶＸＴ３７３
９（ヘキスト製）１部を水に溶かした５５％溶液を含浸液とする。
There are two-stage impregnations in which decorative sheet base paper is impregnated with melamine resin or urea resin, or impregnated with urea resin and further impregnated with melamine resin. Examples of the impregnating resin include 100 parts of Madrid MW559 (melamine resin, manufactured by Hoechst) as the main agent, 0.2 parts of Madrid Hardener MH835 (manufactured by Hoechst), and High Bazaar VXT373 as the penetrant.
A 55% solution of 9 parts (produced by Hoechst) dissolved in water is used as the impregnating solution.
この含浸液をディップ含浸により、化粧板原紙に含浸率が９０〜１５０％になるように含
浸する。含浸率とは化粧板原紙の米坪が１００ｇ／ｍ２で、メラミン樹脂含浸後の含浸紙
の米坪が２００ｇ／ｍ２となれば、含浸率１００％である。含浸紙の米坪が２５０g／ｍ
２となれば、含浸率１５０％となる。
The impregnating solution is impregnated on the decorative board base paper by dip impregnation so that the impregnation ratio is 90 to 150%. The impregnation rate is 100% when the basis weight of the decorative board base paper is 100 g / m 2 and the impregnated paper after impregnation with melamine resin is 200 g / m 2 . Impregnated paper has a weight of 250g / m
If it is 2 , the impregnation rate is 150%.
得られたメラミン樹脂含浸紙をパーティクルボードの上に乗せ、熱圧成型機で１８０℃ｘ
２０ｋｇｆ／ｃｍ２ｘ６０秒の条件で熱圧成型して、ボードに化粧板原紙を貼り合わせる
と低圧メラミン化粧板が得られる。
Place the resulting melamine resin impregnated paper on a particle board, and heat-press molding machine at 180 ° C x
A low-pressure melamine decorative board is obtained by hot-press molding under conditions of 20 kgf / cm 2 × 60 seconds and pasting the decorative board base paper to the board.
この熱圧成型するときのプレス板は艶有り仕様のものを使う。低圧メラミン化粧板の光沢
度は高級感を出すためには９０以上が望ましい。
Use a glossy press plate for hot pressing. The gloss level of the low-pressure melamine decorative board is desirably 90 or more in order to give a high-class feeling.
以下実施例を挙げて本発明を詳細に説明する。 本実施例、比較例における評価は、以下
の方法によった。
（１）米坪ＪＩＳ Ｐ８１２４に基づき測定した。
（２）灰分ＪＩＳ Ｐ ８２５２に基づき測定した。
（３）熱水ＰＨＪＩＳ Ｐ ８１３３に基づき測定した。紙の熱水ｐHが７．０±１．０の範囲にある場合を中性とした。
（４）光沢度ＪＩＳ Ｚ ８７４１に基づきハンディ光沢計ＩＧ―３２０（堀場製作所製）で測定した。光沢度９０以上で高光沢性良好な低圧メラミン化粧板とした。
（５）成形時間の短縮成形時間の短縮については熱圧成形時間を６０秒から４５秒と短くして作製した低圧メラミン化粧板の光沢度が９０以上なら、熱圧成形時間が短縮できたとした。
Hereinafter, the present invention will be described in detail with reference to examples. Evaluation in this example and the comparative example was based on the following method.
(1) Measured based on JIS P8124.
(2) Ash content Measured based on JIS P 8252.
(3) Measured based on hot water PHJIS P 8133. The case where the hot water pH of the paper was in the range of 7.0 ± 1.0 was regarded as neutral.
(4) Glossiness Measured with a handy gloss meter IG-320 (Horiba Seisakusho) based on JIS Z 8741. A low-pressure melamine decorative board having a glossiness of 90 or more and good glossiness was obtained.
(5) Shortening of molding time Regarding shortening of molding time, if the low pressure melamine decorative board produced by shortening the hot pressing time from 60 seconds to 45 seconds has a glossiness of 90 or more, the hot pressing time can be shortened. .
（実施例１） 広葉樹晒しクラフトパルプ（ＬＢＫＰ）１００重量部をダブルディスクリ
ファイナーで叩解し、５００ｍｌＣＳＦとした。これに２酸化チタン５０重量部、及び無
機凝結剤、湿潤紙力剤：ポリアクリルアミドエピクロロヒドリン、助剤及び着色顔料を加
え、アルミン酸ナトリウムでｐＨを８．３に調整した。これを長網抄紙機で抄造して米坪
９９．５ｇ／ｍ２、灰分２９％、熱水ｐＨ６．５５のベースの化粧板原紙を得た。
(Example 1) Hardwood bleached kraft pulp (LBKP) 100 parts by weight was beaten with a double disc refiner to make 500 ml CSF. To this was added 50 parts by weight of titanium dioxide, and an inorganic coagulant, wet paper strength agent: polyacrylamide epichlorohydrin, an auxiliary agent and a color pigment, and the pH was adjusted to 8.3 with sodium aluminate. This was made with a long paper machine to obtain a base paper for baseboard of 99.5 g / m 2 , 29% ash, and pH 6.55 hot water.
得られたベースの化粧板原紙に、クエン酸―リン酸水素２ナトリウム水溶液０．９％液（クエン酸／リン酸水素２ナトリウムのモル比１．３９、ｐＨ＝３．４４）をディッピング含浸により付与し、シリンダードライヤーで乾燥し、米坪１００．３ｇ／ｍ２、熱水ｐＨ６．４６の化粧板原紙を得た。塗布量は０．８ｇ／ｍ２であった。 The base decorative board base paper obtained was impregnated with 0.9% citric acid- disodium hydrogen phosphate aqueous solution (molar ratio of citric acid / disodium hydrogen phosphate 1.39, pH = 3.44) by dipping impregnation. And dried with a cylinder dryer to obtain a decorative base paper having a rice floor of 100.3 g / m 2 and hot water of pH 6.46. The coating amount was 0.8 g / m 2 .
（実施例２）針葉樹晒しクラフトパルプ（ＮＢＫＰ）１０重量部と広葉樹晒しクラフトパ
ルプ（ＬＢＫＰ）９０重量部をダブルディスクリファイナーで叩解し、４６０ｍｌＣＳＦ
とした。これに２酸化チタン５０重量部、及び無機凝結剤、湿潤紙力剤：ポリアクリルア
ミドエピクロロヒドリン、助剤及び着色顔料を加え、アルミン酸ナトリウムでｐＨを８．
９に調整した。これを長網抄紙機で抄造して米坪１００．５ｇ／ｍ２、灰分３１％、熱水
ｐＨ７．４５のベースの化粧板原紙を得た。
(Example 2) 10 parts by weight of softwood bleached kraft pulp (NBKP) and 90 parts by weight of hardwood bleached kraft pulp (LBKP) were beaten with a double disc refiner, and 460 ml CSF
It was. To this was added 50 parts by weight of titanium dioxide and an inorganic coagulant, wet paper strength agent: polyacrylamide epichlorohydrin, an auxiliary agent and a color pigment, and the pH was adjusted to 8. with sodium aluminate.
Adjusted to 9. This was made with a long paper machine to obtain a base decorative base paper of 100.5 g / m 2 , 31% ash, and hot water pH 7.45.
得られたベースの化粧板原紙に、クエン酸―リン酸水素２ナトリウム水溶液０．４％液（クエン酸／リン酸水素２ナトリウムのモル比８．５２、ｐＨ＝２．５７）をディッピング含浸により付与し、シリンダードライヤーで乾燥し、米坪１００．８ｇ／ｍ２、熱水ｐＨ６．０４の化粧板原紙を得た。塗布量は０．３ｇ／ｍ２であった。 The base decorative board paper obtained was impregnated with a 0.4% aqueous solution of citric acid-disodium hydrogen phosphate (molar ratio of citric acid / disodium hydrogen phosphate 8.52, pH = 2.57) by dipping impregnation. And dried with a cylinder dryer to obtain a decorative base paper having a rice floor of 100.8 g / m 2 and hot water pH 6.04. The coating amount was 0.3 g / m 2 .
（実施例３） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液０．６％液（クエン酸／リン酸水素２ナトリウムのモル比１．２２、ｐＨ＝３．５０）に変更した以外は実施例２と同様な方法で、米坪１０１．０ｇ／ｍ２、熱水ｐＨ６．３３の化粧板原紙を得た。塗布量は０．５ｇ／ｍ２であった。 (Example 3) The procedure was carried out except that the impregnation solution was changed to a 0.6% solution of citric acid- disodium hydrogen phosphate aqueous solution ( citric acid / disodium hydrogen phosphate molar ratio 1.22, pH = 3.50). In the same manner as in Example 2, a decorative board base paper having a weight of 101.0 g / m 2 and hot water of pH 6.33 was obtained. The coating amount was 0.5 g / m 2 .
（実施例４） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液０．９％液（クエン酸／リン酸水素２ナトリウムのモル比１．３９、ｐＨ＝３．４４）に変更した以外は実施例２と同様な方法で、米坪１０１．４ｇ／ｍ２、熱水ｐＨ６．０１の化粧板原紙を得た。塗布量は０．９ｇ／ｍ２であった。 (Example 4) Implementation was performed except that the impregnation solution was changed to a 0.9% solution of citric acid- disodium hydrogenphosphate aqueous solution ( citric acid / disodium hydrogenphosphate molar ratio 1.39, pH = 3.44). In the same manner as in Example 2, a decorative board base paper having a weight of 101.4 g / m 2 and hot water of pH 6.01 was obtained. The coating amount was 0.9 g / m 2 .
（実施例５） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液０．６％液（クエン酸／リン酸水素２ナトリウムのモル比０．７３、ｐＨ＝４．３０）に変更した以外は実施例２と同様な方法で、米坪１０１．０ｇ／ｍ２、熱水ｐＨ７．０５の化粧板原紙を得た。塗布量は０．５ｇ／ｍ２であった。 (Example 5) Implementation was performed except that the impregnation solution was changed to a 0.6% solution of citric acid- disodium hydrogen phosphate aqueous solution (molar ratio of citric acid / disodium hydrogen phosphate 0.73, pH = 4.30). In the same manner as in Example 2, a decorative board base paper having a weight of 101.0 g / m 2 and hot water of pH 7.05 was obtained. The coating amount was 0.5 g / m 2 .
（実施例６） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液０．９％液（クエン酸／リン酸水素２ナトリウムのモル比１．１４、ｐＨ＝３．５８）に変更した以外は実施例２と同様な方法で、米坪１０１．５ｇ／ｍ２、熱水ｐＨ６．１６の化粧板原紙を得た。塗布量は１．０ｇ／ｍ２であった。 (Example 6) The impregnation solution was changed to a 0.9% solution of citric acid- disodium hydrogenphosphate aqueous solution ( citric acid / disodium hydrogenphosphate molar ratio 1.14, pH = 3.58). In the same manner as in Example 2, a decorative board base paper having a weight of 101.5 g / m 2 and hot water of pH 6.16 was obtained. The coating amount was 1.0 g / m 2 .
（実施例７）針葉樹晒しクラフトパルプ（ＮＢＫＰ）２０重量部と広葉樹晒しクラフトパ
ルプ（ＬＢＫＰ）８０重量部をダブルディスクリファイナーで叩解し、４００ｍｌＣＳＦ
とした。これに２酸化チタン６０重量部、及び無機凝結剤、湿潤紙力剤：ポリアクリルア
ミドエピクロロヒドリン、助剤及び着色顔料を加え、アルミン酸ナトリウムでｐＨを９．
１に調整した。これを長網抄紙機で抄造して米坪８０．６ｇ／ｍ２、灰分３４％、熱水ｐ
Ｈ７．７９のベースの化粧板原紙を得た。
(Example 7) 20 parts by weight of softwood bleached kraft pulp (NBKP) and 80 parts by weight of hardwood bleached kraft pulp (LBKP) were beaten with a double disc refiner, and 400 ml CSF
It was. 60 parts by weight of titanium dioxide and inorganic coagulant, wet paper strength agent: polyacrylamide epichlorohydrin, auxiliary agent and coloring pigment were added thereto, and the pH was adjusted to 9. with sodium aluminate.
Adjusted to 1. This is made with a long paper machine to make 80.6g / m 2 rice tsubo, 34% ash, hot water p
A base sheet of decorative board of H7.79 was obtained.
得られたベースの化粧板原紙に、クエン酸―リン酸水素２ナトリウム水溶液０．９％液（クエン酸／リン酸水素２ナトリウムのモル比１．３９、ｐＨ＝３．４４）をディッピング含浸により付与し、シリンダードライヤーで乾燥し、米坪８１．３ｇ／ｍ２、熱水ｐＨ６．２１の化粧板原紙を得た。塗布量は０．７ｇ／ｍ２であった。 The base decorative board base paper obtained was impregnated with 0.9% citric acid- disodium hydrogen phosphate aqueous solution (molar ratio of citric acid / disodium hydrogen phosphate 1.39, pH = 3.44) by dipping impregnation. And dried with a cylinder dryer to obtain a decorative base paper of 81.3 g / m 2 , and hot water pH 6.21. The coating amount was 0.7 g / m 2 .
（実施例８）針葉樹晒しクラフトパルプ（ＮＢＫＰ）１０重量部と広葉樹晒しクラフトパ
ルプ（ＬＢＫＰ）９０重量部をダブルディスクリファイナーで叩解し、４３０ｍｌＣＳＦ
とした。これに２酸化チタン４０重量部、及び無機凝結剤、湿潤紙力剤：ポリアクリルア
ミドエピクロロヒドリン、助剤及び着色顔料を加え、アルミン酸ナトリウムでｐＨを８．
５に調整した。これを長網抄紙機で抄造して米坪８１．０ｇ／ｍ２、灰分２５％、熱水ｐ
Ｈ７．２９の化粧板原紙を得た。
(Example 8) 10 parts by weight of softwood bleached kraft pulp (NBKP) and 90 parts by weight of hardwood bleached kraft pulp (LBKP) were beaten with a double disc refiner, and 430 ml CSF
It was. To this, 40 parts by weight of titanium dioxide, inorganic coagulant, wet paper strength agent: polyacrylamide epichlorohydrin, auxiliary agent and color pigment were added, and the pH was adjusted to 8. with sodium aluminate.
Adjusted to 5. This paper is made with a long paper machine and is 81.0 g / m 2 in rice tsubo, 25% ash, hot water p
A decorative base paper of H7.29 was obtained.
上記の抄造の際には長網抄紙機内で、クエン酸―リン酸水素２ナトリウム水溶液２．６％液（クエン酸／リン酸水素２ナトリウムのモル比１．３９、ｐＨ＝３．１４）を０．８ｇ／ｍ２付与した。 In the above paper making, a 2.6% citric acid-disodium hydrogen phosphate aqueous solution (molar ratio of citric acid / disodium hydrogen phosphate 1.39, pH = 3.14) was used in a long net paper machine. 0.8 g / m 2 was applied.
（比較例１） 含浸液を水道水に変更した以外は実施例１と同様な方法で化粧板原紙を得
た。
(Comparative Example 1) A decorative board base paper was obtained in the same manner as in Example 1 except that the impregnation liquid was changed to tap water.
（比較例２） 含浸液を水道水に変更した以外は実施例２と同様な方法で化粧板原紙を得
た。
(Comparative example 2) The decorative board base paper was obtained by the same method as Example 2 except having changed the impregnation liquid into the tap water.
（比較例３） 含浸液を水道水に変更した以外は実施例７と同様な方法で化粧板原紙を得
た。
(Comparative example 3) The decorative board base paper was obtained by the same method as Example 7 except having changed the impregnation liquid into the tap water.
（比較例４）針葉樹晒しクラフトパルプ（ＮＢＫＰ）１０重量部と広葉樹晒しクラフトパ
ルプ（ＬＢＫＰ）９０重量部をダブルディスクリファイナーで叩解し、４３０ｍｌＣＳＦ
とした。これに２酸化チタン４０重量部、及び無機凝結剤、湿潤紙力剤：ポリアクリルア
ミドエピクロロヒドリン、助剤及び着色顔料を加え、アルミン酸ナトリウムでｐＨを８．
５に調整した。これを長網抄紙機で抄造して米坪８０．２ｇ／ｍ２、灰分２５％、熱水ｐ
Ｈ７．４７の化粧板原紙を得た。
(Comparative Example 4) 10 parts by weight of softwood bleached kraft pulp (NBKP) and 90 parts by weight of hardwood bleached kraft pulp (LBKP) were beaten with a double disc refiner, and 430 ml CSF
It was. To this, 40 parts by weight of titanium dioxide, inorganic coagulant, wet paper strength agent: polyacrylamide epichlorohydrin, auxiliary agent and color pigment were added, and the pH was adjusted to 8. with sodium aluminate.
Adjusted to 5. This paper is made with a long paper machine and is 80.2 g / m 2 , 25% ash, hot water p
A decorative board base paper of H7.47 was obtained.
（比較例５） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液１．７％液（クエン酸／リン酸水素２ナトリウムのモル比８．５２、ｐＨ＝２．２３）に変更した以外は実施例２と同様な方法で、米坪１０２．０ｇ／ｍ２、熱水ｐＨ４．４０の化粧板原紙を得た。塗布量は１．５ｇ／ｍ２であった。 (Comparative Example 5) Implemented except that the impregnation solution was changed to a 1.7% solution of citric acid- disodium hydrogenphosphate aqueous solution ( citric acid / disodium hydrogenphosphate molar ratio 8.52, pH = 2.23). In the same manner as in Example 2, a decorative board base paper having a weight of 102.0 g / m 2 and hot water of pH 4.40 was obtained. The coating amount was 1.5 g / m 2 .
（比較例６） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液１．２％液（クエン酸／リン酸水素２ナトリウムのモル比１．２２、ｐＨ＝３．４５）に変更した以外は実施例２と同様な方法で、米坪１０１．６ｇ／ｍ２、熱水ｐＨ５．８１の化粧板原紙を得た。塗布量は１．１ｇ／ｍ２であった。 (Comparative Example 6) Implemented except that the impregnation solution was changed to a citric acid-disodium hydrogen phosphate 1.2% aqueous solution ( citric acid / disodium hydrogen phosphate molar ratio 1.22, pH = 3.45). In the same manner as in Example 2, a decorative board base paper having a weight of 101.6 g / m 2 and hot water of pH 5.81 was obtained. The coating amount was 1.1 g / m 2 .
（比較例７） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液１．０％液（クエン酸／リン酸水素２ナトリウムのモル比０．４３、ｐＨ＝５．３７）に変更した以外は実施例２と同様な方法で、米坪１０１．４ｇ／ｍ２、熱水ｐＨ７．２３の化粧板原紙を得た。塗布量は０．９ｇ／ｍ２であった。 (Comparative Example 7) Implemented except that the impregnation solution was changed to a citric acid-disodium hydrogenphosphate aqueous solution 1.0% solution ( citric acid / disodium hydrogenphosphate molar ratio 0.43, pH = 5.37). In the same manner as in Example 2, a decorative board base paper having a weight of 101.4 g / m 2 and hot water of pH 7.23 was obtained. The coating amount was 0.9 g / m 2 .
（比較例８） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液１．３％液（クエン酸／リン酸水素２ナトリウムのモル比１．３９、ｐＨ＝３．３２）に変更した以外は実施例２と同様な方法で、米坪１０１．７ｇ／ｍ２、熱水ｐＨ５．６２の化粧板原紙を得た。塗布量は１．２ｇ／ｍ２であった。 (Comparative Example 8) Implementation was carried out except that the impregnation solution was changed to a 1.3% solution of citric acid- disodium hydrogenphosphate aqueous solution ( citric acid / disodium hydrogenphosphate molar ratio 1.39, pH = 3.32). In the same manner as in Example 2, a decorative board base paper having a weight of 101.7 g / m 2 and hot water of pH 5.62 was obtained. The coating amount was 1.2 g / m 2 .
（比較例９） 含浸液をクエン酸―リン酸水素２ナトリウム水溶液１．０％液（クエン酸／リン酸水素２ナトリウムのモル比１．７０、ｐＨ＝３．１６）に変更した以外は実施例２と同様な方法で、米坪１０１．４ｇ／ｍ２、熱水ｐＨ５．６３の化粧板原紙を得た。塗布量は０．９ｇ／ｍ２であった。 (Comparative Example 9) Implemented except that the impregnation solution was changed to a citric acid-disodium hydrogen phosphate aqueous solution 1.0% solution ( citric acid / disodium hydrogen phosphate molar ratio 1.70, pH = 3.16). In the same manner as in Example 2, a decorative board base paper having a weight of 101.4 g / m 2 and hot water of pH 5.63 was obtained. The coating amount was 0.9 g / m 2 .
（比較例１０） 含浸液を硫酸アルミニウム水溶液０．４％液（ｐＨ＝３．８２）に変更
した以外は実施例２と同様な方法で、米坪１００．８ｇ／ｍ２、熱水ｐＨ４．７９の化粧
板原紙を得た。塗布量は０．３ｇ／ｍ２であった。
(Comparative example 10) Except having changed the impregnation liquid into the aluminum sulfate aqueous solution 0.4% liquid (pH = 3.82), it is the same method as Example 2, and 100.8 g / m < 2 > of hot water and hot water pH4. 79 decorative board base papers were obtained. The coating amount was 0.3 g / m 2 .
（比較例１１） 含浸液を硫酸アルミニウム水溶液０．１％液（ｐＨ＝４．０４）に変更
した以外は実施例２と同様な方法で、米坪１００．６ｇ／ｍ２、熱水ｐＨ５．８９の化粧
板原紙を得た。塗布量は０．１ｇ／ｍ２であった。
(Comparative example 11) Except having changed the impregnation liquid into the aluminum sulfate aqueous solution 0.1% liquid (pH = 4.04), it is the same method as Example 2, and 100.6 g / m < 2 > of hot water and hot water pH5. 89 decorative board base papers were obtained. The coating amount was 0.1 g / m 2 .
（比較例１２） 含浸液をポリ塩化アルミニウム水溶液０．３％液（ｐＨ＝４．１３）に
変更した以外は実施例２と同様な方法で、米坪１００．８ｇ／ｍ２、熱水ｐＨ４．８９の
化粧板原紙を得た。塗布量は０．３ｇ／ｍ２であった。
(Comparative example 12) Except having changed the impregnation liquid into the polyaluminum chloride aqueous solution 0.3% liquid (pH = 4.13), it is the same method as Example 2, 10 basis weight 100.8g / m < 2 >, hot water pH4 .89 decorative board base paper was obtained. The coating amount was 0.3 g / m 2 .
（比較例１３） 含浸液をポリ塩化アルミニウム水溶液０．１％液（ｐＨ＝４．２５）に
変更した以外は実施例１と同様な方法で、米坪９９．６ｇ／ｍ２、熱水ｐＨ５．５１の化
粧板原紙を得た。塗布量は０．１ｇ／ｍ２であった。
(Comparative example 13) The same method as Example 1 except having changed the impregnation liquid into the polyaluminum chloride aqueous solution 0.1% liquid (pH = 4.25), and the US basis weight 99.6g / m < 2 >, hot water pH5 .51 decorative board base paper was obtained. The coating amount was 0.1 g / m 2 .
（実施例９）実施例１〜８及び比較例１〜１３で作製した化粧板原紙に、主剤としてマド
リットＭＷ５５９（メラミン樹脂、ヘキスト製）１００部と、硬化剤としてマドリッドハ
ードナーＭＨ８３５（ヘキスト製）０．２部、浸透剤としてハイバザールＶＸＴ３７３９
（ヘキスト製）１部を水に溶かした５５％溶液の含浸液をディッピング含浸して、含浸率
１００〜１３０％のメラミン含浸紙を得た。
(Example 9) The decorative board base paper produced in Examples 1 to 8 and Comparative Examples 1 to 13 has 100 parts of Madrid MW559 (melamine resin, manufactured by Hoechst) as the main agent and Madrid Hardener MH835 (manufactured by Hoechst) 0 as the curing agent. .2 parts, High Bazaar VXT3739 as penetrant
A melamine-impregnated paper having an impregnation rate of 100 to 130% was obtained by dipping impregnation with an impregnation solution of 55% solution in which 1 part (made by Hoechst) was dissolved in water.
（実施例１０）実施例９で得たメラミン含浸紙と市販のパーティクルボード（厚さ１２ｍ
ｍ、密度０．６０）を併せて、艶有り仕様にした熱圧成型機にセットし、１８０℃ｘ２０
ｋｇｆ／ｃｍ２の条件で、熱圧成型時間を４５秒と６０秒でそれぞれ成型して、低圧メラ
ミン化粧板を得た。得られた低圧メラミン化粧板の光沢度を測定して、光沢度９０以上を
高光沢性良好とした。熱圧成形時間４５秒の低圧メラミン化粧板の光沢度が９０以上で成
形時間を短縮できたとした。結果を別紙表１〜３に示す。
(Example 10) Melamine impregnated paper obtained in Example 9 and a commercially available particle board (thickness 12 m)
m, density 0.60), set in a glossy hot press machine, 180 ° C x 20
Under the conditions of kgf / cm 2 , the hot-press molding time was respectively molded at 45 seconds and 60 seconds to obtain a low-pressure melamine decorative board. The glossiness of the obtained low-pressure melamine decorative board was measured, and a glossiness of 90 or more was regarded as high glossiness. The glossiness of the low-pressure melamine decorative board having a hot-pressure molding time of 45 seconds was 90 or more, and the molding time could be shortened. The results are shown in attached tables 1 to 3.
実施例１〜８は、熱水ｐＨを６．０〜７．５に維持し、光沢度９０以上で成形時間の短縮
が可能であった。一方、比較例５、６、８、９、１０、１２は、光沢度は９０以上であっ
たが、熱水ｐＨが、６．０以下となった。
In Examples 1 to 8, the hot water pH was maintained at 6.0 to 7.5, the glossiness was 90 or more, and the molding time could be shortened. On the other hand, Comparative Examples 5, 6, 8, 9, 10, and 12 had a glossiness of 90 or more, but the hot water pH was 6.0 or less.
実施例１〜８の物性
比較例１〜９の物性
比較例１０〜１３の物性
以上本発明によると、本発明の化粧板原紙を用いるだけで生産工程を変えることなく、安
価に高光沢で且つ熱圧成形時間が短縮できる低圧メラミン化粧板を提供することができる
。
As described above, according to the present invention, it is possible to provide a low-pressure melamine decorative board that is inexpensive and highly glossy and that can shorten the hot press molding time without changing the production process only by using the decorative base paper of the present invention.
Claims (2)
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|---|---|---|---|
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