JP3402822B2 - Metal-based melamine resin decorative board and method for producing the same - Google Patents
Metal-based melamine resin decorative board and method for producing the sameInfo
- Publication number
- JP3402822B2 JP3402822B2 JP02360895A JP2360895A JP3402822B2 JP 3402822 B2 JP3402822 B2 JP 3402822B2 JP 02360895 A JP02360895 A JP 02360895A JP 2360895 A JP2360895 A JP 2360895A JP 3402822 B2 JP3402822 B2 JP 3402822B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- melamine
- melamine resin
- metal
- phenol
- 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 - Lifetime
Links
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は、金属ベースメラミン樹
脂化粧板及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal-based melamine resin decorative board and a method for producing the same.
【０００２】[0002]
【従来の技術】客電車の内層壁材用として使用される金
属ベースメラミン樹脂化粧板は、厚さ１．０〜１．２ｍ
ｍの金属板（アルミニウム板又は鉄板）をベース材と
し、ベース材の一つの面にメラミン樹脂化粧層を形成し
たものである。メラミン樹脂化粧層は、フェノール樹脂
を含浸した芯材紙層とメラミン樹脂を含浸塗布した化粧
紙層をこの順にベース板に重ね、加熱加圧して形成され
ている。メラミン樹脂は、メラミン樹脂１モルに対して
ホルムアルデヒド２〜３モルで反応させ、架橋密度を大
きくして硬度を大としている。2. Description of the Related Art A metal-based melamine resin decorative plate used as an inner wall material of a passenger train has a thickness of 1.0 to 1.2 m.
A metal plate (aluminum plate or iron plate) of m is used as a base material, and a melamine resin decorative layer is formed on one surface of the base material. The melamine resin decorative layer is formed by stacking a core paper layer impregnated with a phenol resin and a decorative paper layer impregnated with a melamine resin on a base plate in this order and heating and pressing. The melamine resin is made to react with 1 mol of the melamine resin with 2 to 3 mol of formaldehyde to increase the crosslink density and increase the hardness.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな、金属ベースメラミン樹脂化粧板は、表面を熱硬化
性樹脂プラスチック層とする構成から、温度、湿度変化
により反りを生じ、完全な平坦な化粧板にはなり難い。
特に、湿度の低いときは凹反りになるため、化粧板の加
工および客電車の内装等の取付け後にゆがんでしまう。However, such a metal-based melamine resin decorative board has a structure in which the surface is a thermosetting resin plastic layer, so that it is warped due to changes in temperature and humidity, and a completely flat makeup is obtained. It is hard to become a board.
In particular, when the humidity is low, the warp occurs, so that it is distorted after processing the decorative plate and mounting the interior of the train.
【０００４】化粧層と金属板は一体の複合対であり、２
種の材料を一体としたバイメタルの如き複合体となる。
このため、化粧層と金属板との伸縮性が異なり、温度や
湿度の変化によって、両者間に歪みを生ずる。そして、
化粧層と金属板とが互いに一体となって拘束されている
ために、この歪みによる応力を生じ、往々にして化粧層
に亀裂を発生させ、過大なる反り等の欠陥を生じる原因
となっている。さらに、表面層に架橋密度が高いメラミ
ン樹脂を使用しているため、樹脂層の弾性が低く、種々
の欠陥を増大する要因となっている。また、金属が裏面
に露出しているため、裏面から放熱が大であり、しばし
ば結露するという欠点もあった。本発明は、このような
欠点を解消しようとするものである。The decorative layer and the metal plate are an integral composite pair.
It becomes a composite such as a bimetal in which seed materials are integrated.
Therefore, the stretchability of the decorative layer and that of the metal plate are different, and distortion occurs between the two due to changes in temperature and humidity. And
Since the decorative layer and the metal plate are constrained integrally with each other, stress due to this strain is generated, which often causes cracks in the decorative layer, causing defects such as excessive warpage. . Further, since the melamine resin having a high crosslink density is used for the surface layer, the elasticity of the resin layer is low, which causes various defects. Further, since the metal is exposed on the back surface, there is a drawback that heat is largely dissipated from the back surface and dew condensation often occurs. The present invention seeks to overcome such drawbacks.
【０００５】[0005]
【課題を解決するための手段】本発明は、金属ベース３
の一つの面にメラミン樹脂化粧層５を、他の面にメラミ
ン−フェノール共縮合樹脂層４を形成してなる金属ベー
スメラミン樹脂化粧板である。The present invention provides a metal base 3
The melamine resin decorative layer 5 is formed on one surface and the melamine-phenol co-condensed resin layer 4 is formed on the other surface of the metal-based melamine resin decorative plate.
【０００６】本発明の金属ベースメラミン樹脂化粧板
は、金属ベース３の一面に、フェノール樹脂を含浸した
芯材紙２及びホルムアルデヒドとメラミンのモル比を
１．２〜１．５範囲としパラトルエン−スルフォンアミ
ドをメラミンに対し、０．１モル以上加えた可塑化メラ
ミン樹脂を含浸塗布した化粧紙１をこの順に重ね、金属
ベース３の他の面に、フェノール樹脂４０〜６０重量
部、メラミン樹脂２０〜３０重量部よりなるメラミン−
フェノール共縮合樹脂を含浸塗布した芯材紙４を重ね、
加熱加圧することによって製造される。The metal-based melamine resin decorative board of the present invention comprises a core base paper 2 impregnated with a phenol resin on one side of the metal base 3, and a paratoluene-based resin having a molar ratio of formaldehyde and melamine of 1.2 to 1.5. The decorative paper 1 impregnated with the plasticized melamine resin in which 0.1 mol or more of sulfonamide was added to melamine was laminated in this order, and 40 to 60 parts by weight of the phenol resin and the melamine resin 20 were placed on the other surface of the metal base 3. ~ 30 parts by weight of melamine-
Overlay the core paper 4 impregnated with phenol co-condensation resin,
It is manufactured by heating and pressing.
【０００７】[0007]
【作用】本発明によるメラミン−フェノール共縮合樹脂
は、フェノール樹脂４０〜６０重量部、メラミン樹脂２
０〜３０重量部の範囲とすることは、金属との接着性、
表層のメラミン樹脂との伸縮を調和させるとともに、樹
脂の架橋構造から化粧板の内曲げ加工時の裏面の伸びを
付与することができる。化粧層を構成するメラミン樹脂
は、アルデヒドを低モルとして架橋密度が低いのみなら
ず、極く低モルのパラトルエンスルフォンアミドをメラ
ミン樹脂の架橋構造に加えて分子内可塑化を行うため、
樹脂の弾性を向上させ、化粧面への影響を低減し、亀裂
発生を生じない。さらに、裏面材の伸縮との調和を増強
させ、反り発生を低減する。The melamine-phenol co-condensation resin according to the present invention comprises 40 to 60 parts by weight of a phenol resin and 2 parts of a melamine resin.
The range of 0 to 30 parts by weight means the adhesiveness to metal,
The expansion and contraction with the melamine resin of the surface layer can be coordinated, and the cross-linking structure of the resin can impart elongation on the back surface during the internal bending process of the decorative plate. The melamine resin constituting the cosmetic layer not only has a low cross-linking density with a low molar amount of aldehyde, but also performs extremely intramolecular plasticization by adding extremely low-molar paratoluene sulfonamide to the cross-linked structure of the melamine resin,
It improves the elasticity of the resin, reduces the effect on the decorative surface, and does not cause cracking. Furthermore, it enhances the harmony with the expansion and contraction of the back surface material and reduces the occurrence of warpage.
【０００８】[0008]
【実施例】フェノール樹脂５０部、メラミン樹脂２０部
よりなるメラミン−フェノール共縮合樹脂をワニスを、
坪量が２３０ｇ／ｍ2 のクラフト紙に含浸塗布し、１３
０℃で２分間乾燥して、フェノール樹脂含浸芯材紙を得
た。次に、メラミン１００部、ホルムアルデヒド３８％
水溶液８８部、パラートルエンスルフォンアミド２０部
（ホルムアルデヒド／メラミン１．４モル、パラートル
エンスルフォンアミド０．１６モル）のメラミン樹脂ワ
ニスを、坪量が１００ｇ／ｍ2 の、模様を印刷した化粧
原紙に含浸塗布した後１００℃で３分間乾燥して、可塑
化メラミン樹脂含浸化粧紙を得た。EXAMPLE A melamine-phenol co-condensed resin consisting of 50 parts of a phenol resin and 20 parts of a melamine resin was used as a varnish.
Apply it to kraft paper with a basis weight of 230 g / m 2 by impregnation, and
It was dried at 0 ° C. for 2 minutes to obtain a phenol resin-impregnated core material paper. Next, 100 parts melamine, 38% formaldehyde
88 parts of aqueous solution, 20 parts of para-toluene sulfonamide (formaldehyde / melamine 1.4 mol, para-toluene sulfonamide 0.16 mol) melamine resin varnish is applied to a decorative base paper with a basis weight of 100 g / m 2. After impregnating and coating, it was dried at 100 ° C. for 3 minutes to obtain a plasticized melamine resin-impregnated decorative paper.
【０００９】次に、この化粧紙をフェノール樹脂含浸紙
の上に重ね、厚さ１．０ｍｍのアルミニウム板（ＪＩＳ
４０００に規定するＡ３００３Ｐ）３に重ねた。さら
に、アルミニウム板の裏面側に、フェノール樹脂含浸芯
材紙を重ね、温度１４０℃、圧力１０ＭＰａで３０分間
加熱加圧して、呼び厚さが１．６ｍｍのアルミニウムベ
ースメラミン樹脂化粧板を得た（図１参照）。得られた
化粧板の、厚さ、耐煮沸性、表面引っかき硬さ、耐熱
性、耐熱水性、耐屈曲性及び耐亀裂性を表１に、脱湿・
吸湿反りを図２に示す。なお、従来公知の、アルミニウ
ムベースメラミン樹脂化粧板（メラミン−フェノール共
縮合樹脂層４を形成しない化粧板）の特性を、夫れ夫れ
表１及び図２において比較例として示した。Next, this decorative paper is laid on a phenol resin-impregnated paper, and an aluminum plate (JIS) with a thickness of 1.0 mm is used.
A3003P) 3 specified in 4000. Furthermore, a phenol resin-impregnated core material paper was placed on the back side of the aluminum plate and heated and pressed at a temperature of 140 ° C. and a pressure of 10 MPa for 30 minutes to obtain an aluminum-based melamine resin decorative plate having a nominal thickness of 1.6 mm ( (See FIG. 1). Table 1 shows the thickness, boiling resistance, surface scratch hardness, heat resistance, hot water resistance, bending resistance and crack resistance of the obtained decorative board.
The moisture absorption warpage is shown in FIG. The properties of a conventionally known aluminum-based melamine resin decorative board (a decorative board on which the melamine-phenol co-condensation resin layer 4 is not formed) are shown in Table 1 and FIG. 2 as comparative examples.
【００１０】[0010]
【表１】 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 試験項目 実施例 比較例 ───────────────────────────── 厚さ（ｍｍ） １．７０ １．６８ │厚さ増加率（％） １．２ ０．７ 耐煮沸性│質量増加率（％） １．０ ０．５ │層間剥離 異常なし 異常なし 表面引っかき硬さ（ｇ） ８０ ９０ 耐熱性 異常なし 異常なし 耐熱水性 異常なし 異常なし 耐屈曲性（ｍｍ） ７０ ５０ 耐亀裂性 亀裂発生なし 亀裂発生なし ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━[Table 1] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Test item Example Comparative example ───────────────────────────── Thickness (mm) 1.70 1.68 │Thickness increase rate (%) 1.2 0.7 Boil resistance-mass increase rate (%) 1.0 0.5 │ Delamination No abnormality No abnormality Surface scratch hardness (g) 80 90 Heat resistance No abnormality No abnormality Hot water resistance No abnormality No abnormality Flex resistance (mm) 70 50 Crack resistance No cracking No cracking ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
【００１１】試験方法は以下の通りである。耐煮沸性
；試料から、試験片を３枚切取り、切断面を平
滑に仕上げる。これを、５０±３℃の恒温器中に２４時
間保持し、その後煮沸水中に２時間浸漬する。煮沸前後
の、厚さ及び質量を測定し、剥離の有無を肉眼で調べ
る。表面引っき硬さ
；クレメンス形引っかき硬さ試験きによ
る。耐熱性
；試験片の上に１８０℃に加熱した油を入れた平
底アルミニウム容器を置き２０分間放置した後異常の有
無を調べる。耐屈曲性
；２５×１５０ｍｍの試験片（たて、よこ）を
採取し、Ｕ字形雄、雌型にはさみ、曲げ半径ｍｍの限界
を調べる。耐亀裂性
；１００×１００ｍｍの試験片の四すみ及び中
央に直径５ｍｍの穴をあけ３．５ｍｍの鋼鉄性の冶具板
と四すみをビス止めする。これを、７０℃恒温器中に４
８時間放置した後、室温まで冷却し、化粧層に生ずる、
亀裂の有無を調べる。脱湿・吸湿反り；
定尺品（９０．９×１８１．８ｃｍ）
を温度４０℃、湿度９０％ＲＨの恒温器中に、２４時間
保持し、さらに、温度４０℃の恒温器中に、２４時間保
持する。これを、１サイクルとして、連続３サイクル実
施し、各々の処理後における定尺品の四すみの矢高（反
り）を測定し、反りの挙動を調べる。The test method is as follows. Boil resistance : Three test pieces are cut from the sample and the cut surface is finished to be smooth. This is kept in a thermostatic chamber at 50 ± 3 ° C. for 24 hours and then immersed in boiling water for 2 hours. Before and after boiling, the thickness and mass are measured and the presence or absence of peeling is visually inspected. Surface scratch hardness: According to the Clemens type scratch hardness test. Heat resistance : A flat-bottom aluminum container containing oil heated to 180 ° C. is placed on the test piece, left for 20 minutes, and then examined for abnormality. Bending resistance : 25 × 150 mm test pieces (vertical and horizontal) are sampled, sandwiched between U-shaped male and female dies, and the limit of bending radius mm is examined. Crack resistance : A 100 mm x 100 mm test piece and a hole with a diameter of 5 mm are opened in the center and a 3.5 mm steel jig plate and the four corners are screwed. Place this in a 70 ° C incubator for 4
After leaving it for 8 hours, it is cooled to room temperature, and it forms on the decorative layer.
Check for cracks. Dehumidification / Humidity Warpage ; Standard length product (90.9 x 181.8 cm)
Is kept in a thermostat at a temperature of 40 ° C. and a humidity of 90% RH for 24 hours, and further kept in a thermostat at a temperature of 40 ° C. for 24 hours. This is set as one cycle, and three consecutive cycles are carried out. The arrow height (warp) of the four corners of the standard length product after each treatment is measured, and the behavior of the warp is examined.
【００１２】[0012]
【発明の効果】本発明によれば、アルミニウム板の裏面
に、メラミン−フェノ−ル共縮合樹脂の層を形成したの
で、寒暖、湿度の変化によって生ずる反りを飛躍的に向
上させることが可能となった。しかも、表面のメラミン
樹脂に可塑性があるため、使用中における化粧面に亀裂
を生ずることがない。さらに、アルミニウム板の裏面
に、樹脂層を形成するため、裏面側からの放熱や吸熱が
少なく、客電車の内外の温度差から生ずる裏面側への結
露が発生しにくくなる。According to the present invention, since the layer of the melamine-phenol co-condensed resin is formed on the back surface of the aluminum plate, it is possible to dramatically improve the warpage caused by changes in temperature and humidity. became. In addition, since the melamine resin on the surface has plasticity, no crack is generated on the decorative surface during use. Further, since the resin layer is formed on the back surface of the aluminum plate, heat radiation or heat absorption from the back surface side is small, and dew condensation on the back surface side caused by the temperature difference between the inside and outside of the passenger train is less likely to occur.
【図１】本発明の一実施例になる金属ベースメラミン樹
脂化粧板の断面説明図。FIG. 1 is an explanatory cross-sectional view of a metal-based melamine resin decorative board according to an embodiment of the present invention.
【図２】脱湿、吸湿反り試験結果を示すグラフ。FIG. 2 is a graph showing the results of dehumidification and moisture absorption warpage tests.
１ メラミン樹脂含浸化粧紙 ２ フェノール樹脂含浸紙 ３ 金属ベース ４ メラミン−フェノール共縮合樹脂層 ５ メラミン樹脂化粧層 1 Melamine resin impregnated decorative paper 2 Phenolic resin impregnated paper 3 metal base 4 Melamine-phenol co-condensation resin layer 5 Melamine resin decorative layer
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭54−6071（ＪＰ，Ａ) 特開 平１−319541（ＪＰ，Ａ) 特開 平６−305076（ＪＰ，Ａ) 特開 平２−140215（ＪＰ，Ａ) 特開 平２−97552（ＪＰ，Ａ) 実公 昭50−13910（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 1/00 - 35/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-54-6071 (JP, A) JP-A-1-319541 (JP, A) JP-A-6-305076 (JP, A) JP-A-2- 140215 (JP, A) JP-A-2-97552 (JP, A) Jitsuko Sho 50-13910 (JP, Y1) (58) Fields investigated (Int.Cl. 7 , DB name) B32B 1/00-35 / 00
Claims (2)
粧層を、他の面にメラミン−フェノール共縮合樹脂層を
形成してなる金属ベースメラミン樹脂化粧板。1. A metal-based melamine resin decorative board having a melamine resin decorative layer formed on one surface of a metal base and a melamine-phenol co-condensed resin layer formed on the other surface.
含浸した芯材紙及びホルムアルデヒドとメラミンのモル
比を１．２〜１．５範囲としパラトルエン−スルフォン
アミドをメラミンに対し、０．１モル以上加えた可塑化
メラミン樹脂を含浸塗布した化粧紙をこの順に重ね、金
属ベースの他の面に、フェノール樹脂４０〜６０重量
部、メラミン樹脂２０〜３０重量部よりなるメラミン−
フェノール共縮合樹脂を含浸塗布した芯材紙を重ね、加
熱加圧することを特徴とする金属ベースメラミン樹脂化
粧板の製造方法。2. A core base paper impregnated with a phenol resin and a molar ratio of formaldehyde and melamine are set in a range of 1.2 to 1.5 on one surface of a metal base, and paratoluene-sulfonamide is used in an amount of 0.1 mol based on melamine. The decorative papers impregnated with the plasticized melamine resin added above are laminated in this order, and 40 to 60 parts by weight of a phenol resin and 20 to 30 parts by weight of a melamine resin are placed on the other surface of the metal base.
A method for producing a metal-based melamine resin decorative board, comprising stacking core paper impregnated with a phenol co-condensation resin and heating and pressing the core paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02360895A JP3402822B2 (en) | 1995-02-13 | 1995-02-13 | Metal-based melamine resin decorative board and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02360895A JP3402822B2 (en) | 1995-02-13 | 1995-02-13 | Metal-based melamine resin decorative board and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08216338A JPH08216338A (en) | 1996-08-27 |
| JP3402822B2 true JP3402822B2 (en) | 2003-05-06 |
Family
ID=12115333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02360895A Expired - Lifetime JP3402822B2 (en) | 1995-02-13 | 1995-02-13 | Metal-based melamine resin decorative board and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3402822B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150133216A (en) * | 2013-03-22 | 2015-11-27 | 스미또모 베이크라이트 가부시키가이샤 | Melamine resin metal decorative plate and method for manufacturing melamine resin metal decorative plate |
-
1995
- 1995-02-13 JP JP02360895A patent/JP3402822B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08216338A (en) | 1996-08-27 |
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