JP2007245557A - Melamine decorative plate - Google Patents

Melamine decorative plate Download PDF

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JP2007245557A
JP2007245557A JP2006072594A JP2006072594A JP2007245557A JP 2007245557 A JP2007245557 A JP 2007245557A JP 2006072594 A JP2006072594 A JP 2006072594A JP 2006072594 A JP2006072594 A JP 2006072594A JP 2007245557 A JP2007245557 A JP 2007245557A
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resin
melamine
epoxy
paper
impregnated
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Hirobumi Chiyuusei
博文 中正
Kishun Ito
貴春 伊藤
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Aica Kogyo Co Ltd
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Aica Kogyo Co Ltd
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<P>PROBLEM TO BE SOLVED: To obtain a melamine decorative plate showing a small warp, a small dimensional change and excellent crack resistance. <P>SOLUTION: A melamine decorative plate is made by laminating a core layer in which a resin liquid containing a melamine resin and an epoxy resin as major components is used for an impregnating resin on melamine resin-impregnated decorative paper, and heat-pressing them. The compounding ratio of the melamine resin to the epoxy resin is 100:1 to 15 by solid content. A poly alkylene glycol multi-valent ether can also be used for the epoxy-modified melamine resin as a modifier. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明はメラミン化粧板に関する。   The present invention relates to a melamine decorative board.

従来から熱硬化性樹脂化粧板として耐熱性、耐水性、耐摩耗性等の諸物性に優れるメラミン化粧板が知られ、テーブル、机、流し台などの表面材として広く使用されている。このメラミン化粧板は、基本的にコア層と化粧層とから構成され、必要に応じて、バランス層、表面層が積層される。通常化粧層には化粧紙にメラミン−ホルムアルデヒド樹脂が含浸されたメラミン樹脂含浸化粧紙、コア層にはクラフト紙にメラミン樹脂が含浸されたメラミン樹脂含浸コア紙もしくはフェノール樹脂が含浸されたフェノール樹脂含浸コア紙が用いられる。
特開平10−58598
Conventionally, a melamine decorative board having excellent physical properties such as heat resistance, water resistance, and abrasion resistance is known as a thermosetting resin decorative board, and is widely used as a surface material for a table, a desk, a sink, and the like. This melamine decorative board is basically composed of a core layer and a decorative layer, and a balance layer and a surface layer are laminated as necessary. Ordinary decorative layer is melamine resin impregnated decorative paper impregnated with melamine-formaldehyde resin on decorative paper, core layer impregnated melamine resin impregnated core paper impregnated with melamine resin or phenol resin impregnated with phenol resin Core paper is used.
JP-A-10-58598

しかしながら、縮合反応により硬化するため、仕上がった化粧板の硬化収縮が大きく、寸法変化率が大きく、クラックが発生することがあった。   However, since the composition is cured by a condensation reaction, the cured decorative board has a large curing shrinkage, a large dimensional change rate, and cracks.

本発明は前記の課題を解決するべく検討されたもので、メラミン樹脂とエポキシ樹脂よりなるエポキシ変性メラミン樹脂を主成分とする樹脂液をコア層の含浸樹脂として用いてなることを特徴とするメラミン化粧板である。 The present invention has been studied in order to solve the above-mentioned problems, and is characterized in that a resin liquid mainly composed of an epoxy-modified melamine resin composed of a melamine resin and an epoxy resin is used as an impregnation resin for the core layer. It is a decorative board.

コア層の含浸用樹脂にエポキシ樹脂を添加することにより、反り、寸法変化率が小さく、耐クラック性が向上したメラミン化粧板となる。これらの効果はエポキシ基の開環によるものと推測される。以下、本発明について詳細に説明する。   By adding an epoxy resin to the resin for impregnation of the core layer, a melamine decorative board having a small warpage, a small dimensional change rate, and improved crack resistance is obtained. These effects are presumed to be due to the ring opening of the epoxy group. Hereinafter, the present invention will be described in detail.

化粧層として用いる化粧紙は、セルロース(パルプ)に顔料(チタン白など)を抄きこんだ抄造紙、もしくは抄造紙に図柄模様を印刷した印刷紙(パターン紙)で坪量50〜150g/mのものが最適である。 The decorative paper used as the decorative layer is a paper made by making a pigment (titanium white, etc.) into cellulose (pulp), or a printed paper (pattern paper) having a pattern printed on the paper, with a basis weight of 50 to 150 g / m. Two are optimal.

化粧紙に含浸されるアミノ−ホルムアルデヒド樹脂は、通常メラミン化粧板として用いられるもので、アミノ化合物、例えばメラミン、尿素、ベンゾグアナミン、アセトグアナミンなどのアミノ化合物とホルムアルデヒド、パラホルムアルデヒドなどのアルデヒド類をアルカリ性触媒下で反応させて得られる。モル比は1.2〜2.5程度であればよい。
コア紙に含浸されるアミノーホルムアルデヒド樹脂は化粧紙に含浸する通常のメラミン樹脂と同様な方法で作成した樹脂を使用することができる。
Amino-formaldehyde resin impregnated in decorative paper is usually used as a melamine decorative board, and it is an alkaline catalyst for amino compounds such as amino compounds such as melamine, urea, benzoguanamine, and acetoguanamine and aldehydes such as formaldehyde and paraformaldehyde. Obtained by reacting under The molar ratio may be about 1.2 to 2.5.
As the amino-formaldehyde resin impregnated in the core paper, a resin prepared in the same manner as a normal melamine resin impregnated in the decorative paper can be used.

エポキシ樹脂は、ビスフェノールA型エポキシ樹脂、ビスフェノールF型エポキシ樹脂、ノボラック型エポキシ樹脂、臭素化エポキシ樹脂等が挙げられ、これらは単独もしくは 2種以上混合して使用することができる。
また各種のジグリシジルエーテル、ポリグリシジルエーテルも使用することができる。ジグリシジルエーテルとしてはレゾルシノールグリシジルエーテル、ネオペンチルグリコールジグリシジルエーテル、1,6−ヘキサンジオールジグリシジルエーテルビスフェノールAジグリシジルエーテル、エチレングリコールジグリシジルエーテル、ポリエチレングリコールジグリシジルエーテル、プロピレングリコールジグリシジルエーテル、ポリプロピレングリコールジグリシジルエーテルなどが挙げられる。
ポリグリシジルエーテルとしてはソルビトールポリグリシジルエーテル、ポリグリセロールポリグリシジルエーテル、ペンタエリスリトールポリグリシジルエーテル、ジグリセロールポリグリシジルエーテル、グリセロールポリグリシジルエーテル、トリメチロールプロパンポリグリシジルエーテルなどが挙げられる。
Examples of the epoxy resin include bisphenol A type epoxy resin, bisphenol F type epoxy resin, novolac type epoxy resin, brominated epoxy resin and the like, and these can be used alone or in combination of two or more.
Various diglycidyl ethers and polyglycidyl ethers can also be used. As the diglycidyl ether, resorcinol glycidyl ether, neopentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether bisphenol A diglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polypropylene Examples include glycol diglycidyl ether.
Examples of the polyglycidyl ether include sorbitol polyglycidyl ether, polyglycerol polyglycidyl ether, pentaerythritol polyglycidyl ether, diglycerol polyglycidyl ether, glycerol polyglycidyl ether, trimethylolpropane polyglycidyl ether, and the like.

コア層には坪量60〜300g/m、密度0.50〜0.70g/cmの未晒もしくは晒クラフト紙に、メラミン樹脂とエポキシ樹脂を混合したエポキシ変性メラミン樹脂が用いられるが、配合割合は、固形分比で100:1〜15、より好ましくは100:3〜10とするのが好ましく、下限に満たないと化粧板の反りが大きくなりやすく、上限を超えると耐水性が劣りやすくなる。含浸率は数1で示される算出方法で、50〜100%とするのが好ましく、下限に満たないと、成形品の中の紙成分比率が上がり吸湿性、耐熱性等が著しく低下する。また上限を超えると熱圧成形時の硬化収縮が大きくなり反りが発生しやすくなる。 In the core layer, an epoxy-modified melamine resin in which a melamine resin and an epoxy resin are mixed with unbleached or bleached kraft paper having a basis weight of 60 to 300 g / m 2 and a density of 0.50 to 0.70 g / cm 3 is used. The blending ratio is preferably 100: 1 to 15 in terms of solid content, more preferably 100: 3 to 10, and if the lower limit is not reached, warpage of the decorative board tends to increase, and if it exceeds the upper limit, water resistance is poor. It becomes easy. The impregnation rate is preferably 50 to 100% by the calculation method represented by Equation 1, and if the lower limit is not reached, the paper component ratio in the molded article increases and the hygroscopicity, heat resistance and the like are significantly reduced. On the other hand, if the upper limit is exceeded, curing shrinkage at the time of hot pressing is increased and warping is likely to occur.

Figure 2007245557
Figure 2007245557

更に、特開2002−212389で記述されている3価以上のポリアルキレングリコール多価エーテルをコア用メラミン樹脂の変性剤として用いることもできる。3価以上のポリアルキレングリコール多価エーテルとしてはポリエチレングリコールグリセリルエーテル、ポリエチレングリコールグリセリルエーテル、ポリプロピレングリコールグリセリルエーテル、ポリブチレングリコールグリセリルエーテル、ポリ(エチレングリコール−プロピレングリコール)グリセリルエーテル、ポリ(プロピレングリコール テトラメチレングリコール)グリセリルエーテル、ポリエチレングリコールペンタエリスリトールエーテル、ポリプロピレングリコールペンタエリスリトールエーテル、ポリブチレングリコールペンタエリスリトールエーテル、ポリ(エチレングリコール−プロピレンクセリコール)ペンタエリスリトールエーテル等が挙げられる。
前記のポリアルキレングリコール多価エーテルの配合割合は、エポキシ変性メラミン樹脂に対し、固形分比で100:5〜30が好ましく、寸法変化率が小さく耐クラック性に優れた製品を提供できる。また上限を超えると耐水性が劣りやすくなる。
Furthermore, a trivalent or higher polyalkylene glycol polyvalent ether described in JP-A No. 2002-212389 can also be used as a modifier for the core melamine resin. Examples of the trivalent or higher polyalkylene glycol polyvalent ethers include polyethylene glycol glyceryl ether, polyethylene glycol glyceryl ether, polypropylene glycol glyceryl ether, polybutylene glycol glyceryl ether, poly (ethylene glycol-propylene glycol) glyceryl ether, poly (propylene glycol tetramethylene). Glycol) glyceryl ether, polyethylene glycol pentaerythritol ether, polypropylene glycol pentaerythritol ether, polybutylene glycol pentaerythritol ether, poly (ethylene glycol-propylene xericol) pentaerythritol ether, and the like.
The blending ratio of the polyalkylene glycol polyvalent ether is preferably 100: 5 to 30 in terms of solid content with respect to the epoxy-modified melamine resin, and can provide a product having a small dimensional change rate and excellent crack resistance. When the upper limit is exceeded, the water resistance tends to be poor.

本発明のメラミン化粧板は、前述の熱硬化性樹脂組成物を主成分とす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エポキシ変性メラミン樹脂含浸紙、必要に応じて、樹脂含浸バランス紙、樹脂含浸表面紙を積層し、熱圧成形されて得られる。   The melamine decorative board of the present invention is a resin-impregnated decorative paper and an epoxy-modified melamine resin-impregnated paper obtained by impregnating a decorative paper for a decorative board with a resin liquid mainly composed of the above-mentioned thermosetting resin composition. A resin-impregnated balance paper and a resin-impregnated surface paper are laminated and obtained by hot pressing.

尚、樹脂含浸バランス紙は裏打ち紙とも呼ばれ、化粧層との収縮バランスをとり反りを抑制するためのものであり、樹脂含浸表面紙は、化粧層の耐摩耗性を向上させる目的で用いられるもので、20〜40g/mの含浸後透明となる表面紙に、前述のアミノ−ホルムアルデヒド樹脂を含浸したものである。 The resin-impregnated balance paper is also referred to as a backing paper, and is used for balancing shrinkage with the decorative layer and suppressing warpage. The resin-impregnated surface paper is used for the purpose of improving the wear resistance of the decorative layer. The surface paper which becomes transparent after impregnation of 20 to 40 g / m 2 is impregnated with the aforementioned amino-formaldehyde resin.

メラミン樹脂
エポキシ変性メラミン樹脂含浸紙(コア含浸紙)
モル比1.3で樹脂分60重量%のメラミン−ホルムアルデヒド初期縮合物(メラミン樹脂)とグリコールポリグリシジルエーテルを固形分比で100:1で配合したエポキシ変性メラミン樹脂を、坪量192g/mのクラフト紙に含浸率が80%となるように含浸し、乾燥して、エポキシ変性メラミン樹脂含浸紙を得た。
メラミン樹脂含浸化粧紙
坪量120g/mの抄造紙に、モル比1.4で樹脂分65重量%のメラミン−ホルムアルデヒド初期縮合物(メラミン樹脂)を、含浸率が100%となるように含浸して、メラミン樹脂含浸化粧紙を得た。
メラミン化粧板
エポキシ変性メラミン樹脂含浸紙を5枚、メラミン樹脂含浸化粧紙を1枚積層し、プレス機を用いて、140℃にて、60kg/cm、60分間の熱圧条件により成形して、実施例1用のメラミン化粧板を得た。
Melamine resin epoxy modified melamine resin impregnated paper (core impregnated paper)
An epoxy-modified melamine resin in which a melamine-formaldehyde initial condensate (melamine resin) having a molar ratio of 1.3 and a resin content of 60% by weight and glycol polyglycidyl ether was blended at a solid content ratio of 100: 1 was used, with a basis weight of 192 g / m 2. The kraft paper was impregnated with an impregnation ratio of 80% and dried to obtain an epoxy-modified melamine resin-impregnated paper.
Melamine resin-impregnated decorative paper Impregnated paper with a basis weight of 120 g / m 2 with a melamine-formaldehyde initial condensate (melamine resin) with a molar ratio of 1.4 and a resin content of 65% by weight so that the impregnation rate is 100%. Thus, a decorative paper impregnated with melamine resin was obtained.
5 sheets of melamine decorative board epoxy-modified melamine resin impregnated paper and 1 sheet of melamine resin impregnated decorative paper are laminated and molded using a press machine at 140 ° C. under 60 kg / cm 2 for 60 minutes. A melamine decorative board for Example 1 was obtained.

エポキシ変性メラミン樹脂の固形分に対し添加剤としてポリプロピレングリセリルエーテルを30重量部添加した以外は実施例1と同様な方法でメラミン化粧板を得た。   A melamine decorative board was obtained in the same manner as in Example 1 except that 30 parts by weight of polypropylene glyceryl ether was added as an additive to the solid content of the epoxy-modified melamine resin.

メラミン樹脂とグリコールポリグリシジルエーテルを固形分比で100:15で配合した以外は実施例1と同様な方法でメラミン化粧板を得た。   A melamine decorative board was obtained in the same manner as in Example 1 except that the melamine resin and glycol polyglycidyl ether were blended at a solid content ratio of 100: 15.

メラミン樹脂とグリコールポリグリシジルエーテルを固形分比で100:15で配合し、エポキシ変性メラミン樹脂の固形分に対し添加剤としてポリプロピレングリセリルエーテルを30重量部添加した以外は実施例1と同様な方法でメラミン化粧板を得た。   A melamine resin and glycol polyglycidyl ether were blended at a solid content ratio of 100: 15, and the same method as in Example 1 except that 30 parts by weight of polypropylene glyceryl ether was added as an additive to the solid content of the epoxy-modified melamine resin. A melamine decorative board was obtained.

比較例1(エポキシ樹脂の配合割合が下限未満の場合)
実施例1において、グリコールポリグリシジルエーテルの配合割合を100:0.5とした以外は同様に実施して、比較例1の化粧板を得た。
Comparative Example 1 (when the proportion of the epoxy resin is less than the lower limit)
The decorative board of Comparative Example 1 was obtained in the same manner as in Example 1, except that the blending ratio of glycol polyglycidyl ether was set to 100: 0.5.

比較例2(エポキシ樹脂の配合割合が上限を越える場合)
実施例1において、グリコールポリグリシジルエーテルの配合割合を100:20とした以外は同様に実施して、比較例2の化粧板を得た。
Comparative example 2 (when the proportion of the epoxy resin exceeds the upper limit)
The decorative board of Comparative Example 2 was obtained in the same manner as in Example 1 except that the blending ratio of glycol polyglycidyl ether was set to 100: 20.

比較例3(エポキシ樹脂の配合割合が下限未満、ポリエーテルの配合割合が上限を越える場合)
実施例1において、グリコールポリグリシジルエーテルの配合割合を100:0.5でポリエーテルを40重量部添加した以外は同様に実施して、比較例3の化粧板を得た。
Comparative Example 3 (when the blending ratio of the epoxy resin is less than the lower limit and the blending ratio of the polyether exceeds the upper limit)
A decorative board of Comparative Example 3 was obtained in the same manner as in Example 1 except that the blending ratio of glycol polyglycidyl ether was 100: 0.5 and 40 parts by weight of polyether was added.

比較例4(エポキシ樹脂の配合割合が上限以上、ポリエーテルの配合割合が上限を越える場合)
実施例1において、グリコールポリグリシジルエーテルの配合割合を100:20でポリエチレングリコールグリセリルエーテルを40重量部添加した以外は同様に実施して、比較例4の化粧板を得た。
Comparative example 4 (when the blending ratio of the epoxy resin exceeds the upper limit and the blending ratio of the polyether exceeds the upper limit)
The decorative board of Comparative Example 4 was obtained in the same manner as in Example 1, except that the blending ratio of glycol polyglycidyl ether was 100: 20 and 40 parts by weight of polyethylene glycol glyceryl ether was added.

評価結果を表1に示す。   The evaluation results are shown in Table 1.

Figure 2007245557
Figure 2007245557

ME:メラミン樹脂
EP:エポキシ樹脂(グリコールポリグリシジルエーテル:デナコールEX−313/ナガセケムテックス株式会社製)
PE:ポリエーテル(ポリプロピレングリセリルエーテルG−700/旭電化工業株式会社製)
耐水性(JIS K6902耐煮沸試験):○(増加率10%以下),×(増加率10%以上)
化粧板反り(4×8尺 四隅反り平均):○(0−10mm)△(10−20mm)×(20mm以上)
耐クラック性(JIS K6902):○(10mm以下)△(10−20mm)×(20m以上)
寸法変化率(JIS K6902):○(縦 0.3%以下,横0.5%以下 )×(縦 0.3%以上,横0.5%以上)
試験方法は以下の通りとした。
反り;製品を40℃−30%の条件下の室内に7日間平置きにし、4隅の浮いた高さを測定した。
耐水性;JIS K6902に規定される熱硬化性樹脂化粧板試験方法に準じて試験を行った。
耐クラック性;150×50mmの化粧板サンプルを作成し、繊維方向と平行に深さ15mmの切り込みを入れたものを試験片とし、80℃の恒温槽中に10時間放置後、クラック長さを測定した。
寸法変化率;JIS K6902に規定される熱硬化性樹脂化粧板試験方法に準じて試験を行った。
ME: Melamine resin EP: Epoxy resin (glycol polyglycidyl ether: Denacol EX-313 / manufactured by Nagase ChemteX Corporation)
PE: Polyether (polypropylene glyceryl ether G-700 / Asahi Denka Kogyo Co., Ltd.)
Water resistance (JIS K6902 boiling resistance test): ○ (10% or less increase rate), × (10% or more increase rate)
Decorative board warpage (4 × 8 scale, four-corner warpage average): ○ (0-10 mm) Δ (10-20 mm) × (20 mm or more)
Crack resistance (JIS K6902): ○ (10 mm or less) Δ (10-20 mm) × (20 m or more)
Dimensional change rate (JIS K6902): ○ (length 0.3% or less, width 0.5% or less) × (length 0.3% or more, width 0.5% or more)
The test method was as follows.
Warpage: The product was placed flat in a room at 40 ° C.-30% for 7 days, and the heights at which the four corners were lifted were measured.
Water resistance: The test was conducted in accordance with the thermosetting resin decorative board test method specified in JIS K6902.
Crack resistance: Create a decorative plate sample of 150 x 50 mm, use a test piece with a depth of 15 mm cut parallel to the fiber direction, leave it in a constant temperature bath at 80 ° C for 10 hours, and set the crack length. It was measured.
Dimensional change rate: A test was conducted in accordance with a thermosetting resin decorative board test method defined in JIS K6902.

本発明のメラミン化粧板の構成断面図。The composition sectional view of the melamine decorative board of the present invention.

符号の説明Explanation of symbols

1 樹脂含浸化粧紙
2 エポキシ変性メラミン樹脂含浸コア紙
5 メラミン化粧板
1 resin-impregnated decorative paper 2 epoxy-modified melamine resin-impregnated core paper 5 melamine decorative board

Claims (2)

メラミン樹脂とエポキシ樹脂よりなるエポキシ変性メラミン樹脂を主成分とする樹脂液をコア層の含浸樹脂として用いてなることを特徴とするメラミン化粧板。 A melamine decorative board comprising a resin liquid mainly composed of an epoxy-modified melamine resin comprising a melamine resin and an epoxy resin as an impregnation resin for a core layer. 該メラミン樹脂と該エポキシ樹脂の配合割合が固形分で100:1〜15であることを特徴とする請求項1記載のメラミン化粧板。 The melamine decorative board according to claim 1, wherein the blending ratio of the melamine resin and the epoxy resin is 100: 1 to 15 in terms of solid content.
JP2006072594A 2006-03-16 2006-03-16 Melamine decorative plate Pending JP2007245557A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150101749A1 (en) * 2010-03-23 2015-04-16 Aica Kogyo Co., Ltd. Melamine Decorative Board
CN110358036A (en) * 2019-08-27 2019-10-22 四川构聚高分子材料有限公司 A kind of modified melamine resin and production method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150101749A1 (en) * 2010-03-23 2015-04-16 Aica Kogyo Co., Ltd. Melamine Decorative Board
US9731491B2 (en) * 2010-03-23 2017-08-15 Aica Kogyo Co., Ltd. Melamine decorative board
CN110358036A (en) * 2019-08-27 2019-10-22 四川构聚高分子材料有限公司 A kind of modified melamine resin and production method

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