JP5865609B2 - 木質化粧板とその製造方法 - Google Patents
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- JP5865609B2 JP5865609B2 JP2011131543A JP2011131543A JP5865609B2 JP 5865609 B2 JP5865609 B2 JP 5865609B2 JP 2011131543 A JP2011131543 A JP 2011131543A JP 2011131543 A JP2011131543 A JP 2011131543A JP 5865609 B2 JP5865609 B2 JP 5865609B2
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Images
Landscapes
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Description
植物系パーティクルとして微小片、接着剤としてMDIとメラミン樹脂、耐水剤としてワックスエマルジョン、ホルムアルデヒドのキャッチャー剤として尿素、キレート剤として粉末状のNTA・H・2Naを配合した。これらを十分に攪拌混合して表層形成用混合物を調製した。なお、NTA・H・2Naの配合量は、微小片に対して、0.5質量%である。
実施例1において、キレート剤をHEDP・2Naに変更し、それ以外は実施例1と同様にして木質化粧板を製造した。
実施例1において、キレート剤をEDTA・2Naに変更し、それ以外は実施例1と同様にして木質化粧板を製造した。
実施例3において、キレート剤を粉末状のものから10%水溶液にしたものに変更し、固形分換算で、微小片に対して0.5質量%を配合して表層形成用混合物を調製した。また、キレート剤を粉末状のものから10%水溶液にしたものに変更し、固形分換算で、粗大片に対して0.1質量%を配合して芯層形成用混合物を調製した。それ以外は実施例3と同様にして木質化粧板を製造した。
実施例4において、化粧単板をビーチに変更し、それ以外は実施例4と同様にして木質化粧板を製造した。
実施例1において、キレート剤の代わりにペースト状の有機系の抗菌剤(ジメチルフェニルスルファミド系抗菌剤:ジメチルフェニルスルファミドを有効成分とするもの)を、微小片に対して0.05質量%を配合して表層形成用混合物を調製した。また、キレート剤の代わりにペースト状の有機系の抗菌剤(上記したジメチルフェニルスルファミド系抗菌剤)を、粗大片に対して0.05質量%を配合して芯層形成用混合物を調製した。それ以外は実施例1と同様にして木質化粧板を製造した。それ以外は実施例1と同様にして木質化粧板を製造した。
実施例1において、キレート剤の代わりにペースト状の無機系の抗菌剤(銀−亜鉛系抗菌剤:銀および亜鉛の金属イオンを抗菌成分として無機物担体に担持させたもの)を、微小片に対して0.05質量%を配合して表層形成用混合物を調製した。また、キレート剤の代わりにペースト状の無機系の抗菌剤(上記した銀-亜鉛系抗菌剤)を、粗大片に対して0.05質量%を配合して芯層形成用混合物を調製した。それ以外は実施例1と同様にして木質化粧板を製造した。
実施例1において、キレート剤を配合せず、それ以外は実施例1と同様にして木質化粧板を製造した。
比較例1において、化粧単板をビーチに変更し、それ以外は比較例1と同様にして木質化粧板を製造した。
実施例1において、キレート剤を塩基性のHEDTA・3Naに変更し、それ以外は実施例1と同様にして木質化粧板を製造した。
[変色試験]
実施例および比較例のカットサンプルの表面に濡れ雑巾を置いて、ビニール袋で密閉し、40℃90%RHの恒温恒湿器の中で2週間放置して、化粧単板の変色程度を次の基準に基づいて評価した。
◎:ほとんど変色なし
○:少し変色あり
△:変色あり
×:変色が大きい
2 木質板
4 化粧単板
Claims (8)
- キャッチャー剤として尿素を含有する木質板の表面に化粧単板を有する木質化粧板において、前記木質板は、さらに弱酸性のキレート剤を含有することを特徴とする木質化粧板。
- 前記弱酸性のキレート剤は、エチレンジアミン四酢酸二水素二ナトリウムであることを特徴とする請求項1に記載の木質化粧板。
- 前記木質板は、植物系パーティクルまたは植物繊維で構成される板状部材であり、前記植物系パーティクル間または前記植物繊維間に前記弱酸性のキレート剤を含有することを特徴とする請求項1または2に記載の木質化粧板。
- 前記木質板における前記弱酸性のキレート剤の含有量は、前記木質板の表裏面の間の中心部分よりも前記化粧単板に近い側の部分において多いことを特徴とする請求項1から3のいずれか一項に記載の木質化粧板。
- 前記化粧単板は、オーク、ナラ、クルミ、およびウォールナットから選ばれるいずれかの木材の単板であることを特徴とする請求項1から4のいずれか一項に記載の木質化粧板。
- キャッチャー剤として尿素を含有する木質板の構成成分に弱酸性のキレート剤を配合した混合物を熱圧成形して木質板を形成し、次いで、その表面に化粧単板を貼着して木質化粧板を製造することを特徴とする木質化粧板の製造方法。
- 前記弱酸性のキレート剤は、エチレンジアミン四酢酸二水素二ナトリウムであることを特徴とする請求項6に記載の木質化粧板の製造方法。
- 前記弱酸性のキレート剤を水溶液の形態で配合することを特徴とする請求項6または7に記載の木質化粧板の製造方法。
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JP2013000918A JP2013000918A (ja) | 2013-01-07 |
JP5865609B2 true JP5865609B2 (ja) | 2016-02-17 |
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