JP3945912B2 - Plate - Google Patents

Description

【００１７】
【実施例８】
見掛け密度０．２０、厚みが２０ｍｍ、幅９３０ｍｍ、長さ２０００ｍｍの単板ＧＣＰの両面に、リバースロールタイプ接着剤塗布機械にて、エチレン−酢酸ビニール共重合体樹脂（コニシ株式会社製）を１００ｇ／ｍ² 塗布し、平面作業台の上に予め用意した幅９３５ｍｍ、長さ２０１０ｍｍに裁断した表装材の特殊板紙を上にした状態の面上に、上記接着剤塗布ＧＣＰを表装材とセンターを合わせながらセットし、更に反対面に上記表装材の特殊板紙面を下にしてＧＣＰにセンターを合わせながらセットした。それをコールドプレス機に移し、５０セット製作した時点にて圧力１．５トン加圧し、そのままの状態で４８時間放置し接着剤中の水分の自然乾燥後の時点をもって、表装材付与ＧＣＰとした。
【００１８】
なお、表装材は、連続ラミネート機械によって、１５μｍのアルミニウム箔面に、エマルジョンタイプアクリル樹脂（ヘキスト合成株式会社製）を約１ｇ／ｍ² 塗布（固形分量）し２１０ｇ／ｍ² の特殊板紙と貼合し乾燥後、幅９３５ｍｍ、長さ２０１０ｍｍに裁断したものである。
【００１９】
【実施例９】
見掛け密度０．２０、厚みが２０ｍｍ、幅９３０ｍｍ、長さ２０００ｍｍの単板ＧＣＰの両面に、リバースロールタイプ接着剤塗布機械にて、主剤エポキシ樹脂ＫＢＫ−Ｅ５７を１００重量部に硬化剤を１００重量部を１００部配合した接着剤（日本ＮＳＣ株式会社製）を１００ｇ／ｍ² 塗布し、平面作業台の上に予め用意した幅９３５ｍｍ、長さ２０１０ｍｍに裁断した表装材の特殊板紙を上にした状態の面上に、上記接着剤塗布ＧＣＰを表装材とセンターを合わせながらセットし、更に反対面に上記表装材の特殊板紙面を下にしてＧＣＰにセンターを合わせながらセットした。それをコールドプレス機に移し、５０セット製作した時点にて圧力３トン加圧し、そのままの状態で２４時間放置し接着剤の硬化反応が終了した時点をもって、表装材付与ＧＣＰとした。
【００２０】
なお、表装材は、連続樹脂押し出しラミネート機械によって、２１０ｇ／ｍ² 坪量の特殊板紙（万英製紙株式会社製）面に、低密度ポリエチレン樹脂（商品名：スミカセンＬ−７０５、住友化学工業株式会社製）を厚み１５μｍ押し出して９μｍのアルミニウム箔と貼合し、幅９３５ｍｍ、長さ２０１０ｍｍに裁断したものである。
【００２１】
【実施例１０〜１２】
見掛け密度０．２０、厚みが２０ｍｍ、幅９３０ｍｍ、長さ２０００ｍｍの単板ＧＣＰの両面に、リバースロールタイプ接着剤塗布機械にて、エポキシ樹脂ＫＢＫ−Ｅ５７を１００重量部と硬化剤を１００重量部配合した接着剤（日本ＮＳＣ株式会社製）を１００ｇ／ｍ² 塗布し、平面作業台の上に予め用意した幅９３５ｍｍ、長さ２０１０ｍｍに裁断した表装材の白ボール紙を上にした状態の面上に、上記接着剤塗布ＧＣＰを表装材とセンターを合わせながらセットし、更に反対面に上記表装材の白ボール紙面を下にしてＧＣＰにセンターを合わせながらセットした。それをコールドプレス機に移し、５０セット製作した時点にて圧力３トン加圧し、そのままの状態で２４時間放置し接着剤の硬化反応が終了した時点をもって、表装材付与ＧＣＰとした。
【００２２】
なお、表装材は、連続ドライラミネート機械によって、それぞれ厚み２５０Åシリカ蒸着１２μｍポリエステルフィルム（商品名：テックバリヤＳ、三菱化学興人パックス株式会社製）、厚み５００Åアルミナ蒸着１２μｍポリエステルフィルム（東洋メタライジング株式会社製）及び前記と同様の５００Åシリカ蒸着ポリエステルフィルム面に、二液ポリウレタン系ドライラミネート接着剤（商品名：タケラックＡ９１０／タケネート Ａ−３＝１００部／１０部 武田薬品工業株式会社製）を３〜５ｇ／ｍ² 塗布（固形分量）し乾燥後、それぞれ２８０ｇ／ｍ² の白ボール紙、２８０ｇ／ｍ² の白ボール紙及び２１０ｇ／ｍ² の特殊板紙と貼合し４０℃のエージング炉にて７２時間放置し接着剤の硬化反応が終了した後、幅９３５ｍｍ、長さ２０１０ｍｍに裁断したものである。
【００２３】
表装材の積層構造は以下の通りである。

【００２４】
【比較例１】
見掛け密度０．２０、厚みが２０ｍｍ、幅９３０ｍｍ、長さ２０００ｍｍの単板ＧＣＰの両面に、リバースロールタイプ接着剤塗布機械にて、主剤エポキシ樹脂ＫＢＫ−Ｅ５７を１００重量部に硬化剤を１００重量部配合した接着剤（日本ＮＳＣ株式会社製）を１２０ｇ／ｍ² 塗布し、平面作業台の上に予め用意した幅９３５ｍｍ、長さ２０１０ｍｍに裁断した表装材の面上に、上記接着剤塗布ＧＣＰを表装材とセンターを合わせながらセットし、更に反対面に上記表装材のＧＣＰにセンターを合わせながらセットした。それをコールドプレス機に移し、５０セット製作した時点にて圧力３トン加圧し、そのままの状態で２４時間放置し接着剤の硬化反応が終了した時点をもって、表装材付与ＧＣＰとした。表装材は、坪量１００ｇ／ｍ² のクラフト紙を用いた。
【００２５】
【比較例２】
実施例１のアルミニウム箔に代え１２μｍのポリエステルフィルム単体（帝人株式会社製）を用いたほかは、実施例１と同様にして表装材付与ＧＣＰを作製した。
【００２６】
【比較例３】
見掛け密度が０．７０、厚みが１５ｍｍ、幅９３０ｍｍ、長さ２０００ｍｍの単板パーティクルボード（大倉工業株式会社製）の両面に、リバースロールタイプ接着剤塗布機械にて、二液ポリウレタン系ドライラミネート接着剤（商品名：タケラックＡ９１０／タケネート Ａ−３＝１００部／１０部、武田薬品工業株式会社製）を３〜５ｇ／ｍ² 塗布（固形分量）乾燥し、平面作業台の上に予め用意した幅９３５ｍｍ、長さ２０１０ｍｍに裁断した表装材の面上に、上記接着剤塗布ＧＣＰを表装材とセンターを合わせながらセットし、更に反対面に上記表装材のボール紙面を下にしてＧＣＰにセンターを合わせながらセットした。それをコールドプレス機に移し、５０セット製作した時点にて圧力１トン加圧し、そのままの状態で４８時間放置し接着剤の硬化反応が終了した時点をもって、表装材付与パーティクルボードとした。
【００２７】
なお、表装材は、ドライラミネーター機によって、２５μｍポリエステルフィルム（東洋紡績株式会社製）に、二液ポリウレタン系ドライラミネート接着剤（商品名：タケラックＡ９１０／タケネート Ａ−３＝１００部／１０部、武田薬品工業株式会社製）を３〜５ｇ／ｍ² 塗布（固形分量）乾燥し、７μｍアルミニウム箔とドライラミネートを行い、更にアルミニウム箔に上記と同様の、二液ポリウレタン系ドライラミネート接着剤（商品名：タケラックＡ９１０／タケネート Ａ−３＝１００部／１０部）を３〜５ｇ／ｍ² 塗布（固形分量）乾燥し、上記と同様の２５μｍポリエステルフィルムとドライラミネートした後、４０℃のエージング炉に７２時間放置し接着剤の硬化反応が終了した後、幅９３５ｍｍ、長さ２０１０ｍｍに裁断したものである。
【００２８】
【比較例４】
見掛け密度０．０３、厚みが２０ｍｍ、幅９３０ｍｍ、長さ２０００ｍｍの発泡スチレン樹脂製単板（株式会社ＪＳＰ製）の両面に、リバースロールタイプ接着剤塗布機械によって、主剤エポキシ樹脂ＫＢＫ−Ｅ５７を１００重量部に硬化剤を１００重量部を１００部配合した接着剤（日本ＮＳＣ株式会社製）を１００ｇ／ｍ² 塗布し、平面作業台の上に予め用意した幅９３５ｍｍ、長さ２０１０ｍｍに裁断した表装材の鉄箔を上にした状態の面上に、上記接着剤塗布発泡スチレン樹脂製単板を表装材とセンターを合わせながらセットし、更に発泡スチレン樹脂製単板の反対面に上記表装材の鉄箔面を下にしてセンターを合わせながらセットした。それをコールドプレス機に移し、５０セット製作した時点にて圧力３トン加圧し、そのままの状態で２４時間放置し接着剤の硬化反応が終了した時点をもって、表装材付与発泡スチレン樹脂製単板とした。
【００２９】
なお、表装材は、連続樹脂押し出しラミネート機械によって、７０μｍ鉄箔（東洋鋼鈑株式会社製）と１７０ｇ／ｍ² 坪量の白ライナー紙（白川製紙株式会社製）とを１５μｍポリエチレンによってラミネートし、更にその材料の白ライナー紙面と新しく襖紙とを１５μｍポリエチレンによってラミネートし、幅９３５ｍｍ、長さ２０１０ｍｍに裁断したものである。
【００３０】
【比較例５】
厚みが２０ｍｍ、幅９３０ｍｍ、長さ２０００ｍｍの見掛け密度０．１３の両面板紙ハニカム単板の両面に、リバースロールタイプ接着剤塗布機械にて、主剤エポキシ樹脂ＫＢＫ−Ｅ５７を１００重量部に硬化剤を１００重量部を１００部配合した接着剤（日本ＮＳＣ株式会社製）を１００ｇ／ｍ² 塗布し、平面作業台の上に予め用意した幅９３５ｍｍ、長さ２０１０ｍｍに裁断した表装材の白ボール紙を上にした状態の面上に、上記接着剤塗布ハニカム単板を表装材とセンターを合わせながらセットし、更に反対面に上記表装材の白ボール紙面を下にしてハニカム単板にセンターを合わせながらセットした。それをコールドプレス機に移し、５０セット製作した時点にて圧力３トン加圧し、そのままの状態で２４時間放置し接着剤の硬化反応が終了した時点をもって、表装材付与ハニカム単板とした。
【００３１】
なお、表装材は、連続樹脂押し出しラミネート機械によって、７０μｍ鉄箔（東洋鋼鈑株式会社製）と１７０ｇ／ｍ² 坪量の白ライナー紙（白川製紙株式会社製）とを１５μｍポリエチレンでラミネートし、更にその材料の白ライナー紙面と新しく襖紙とを１５μｍポリエチレンでラミネートし、幅９３５ｍｍ、長さ２０１０ｍｍに裁断したものである。
【００３２】
【比較例６】
見掛け密度０．２０、厚みが２０ｍｍ、幅９３０ｍｍ、長さ２０００ｍｍの単板ＧＣＰの両面に、リバースロールタイプ接着剤塗布機械にて、主剤エポキシ樹脂ＫＢＫ−Ｅ５７を１００重量部に硬化剤を１００重量部配合した接着剤（日本ＮＳＣ株式会社製）を１００ｇ／ｍ² 塗布し、平面作業台の上に予め用意した幅９３５ｍｍ、長さ２０１０ｍｍに裁断した表装材のクラフト紙を上にした状態の面上に、上記接着剤塗布ＧＣＰを表装材とセンターを合わせながらセットし、更に反対面に上記表装材のクラフト紙面を下にしてＧＣＰにセンターを合わせながらセットした。それをコールドプレス機に移し、５０セット製作した時点にて圧力３トン加圧し、そのままの状態で２４時間放置し接着剤の硬化反応が終了した時点をもって、表装材付与ＧＣＰとした。
【００３３】
なお、表装材は、連続ラミネート機械によって、１５μｍアルミニウム箔面にエマルジョンタイプアクリル樹脂（商品名：モビニール９８７、ヘキスト合成株式会社製）を約１ｇ／ｍ² 塗布（固形分量）し９０ｇ／ｍ² のクラフト紙と貼合し乾燥後、幅９３５ｍｍ、長さ２０１０ｍｍに裁断したものである。
【００３４】
上記の実施例及び比較例で得られた板状材について下記の方法によって耐反り性、耐衝撃性、表面平滑性について評価を行い、その結果を図５に示した。またバリヤ部材のみについて透湿度を測定した。その結果を図６に示す。なお比較例１、２、４については表装材全体の透湿度を測定した。
【００３５】
〔試験１：耐反り性〕
密封した一部屋の中央に実施例及び比較例で得られた表装材付与板状材をセットし、Ｉ側の部屋の雰囲気を室温３０℃、関係湿度６０％の雰囲気に２４時間、II側の部屋の雰囲気を室温３０℃、関係湿度６０％の雰囲気に２４時間放置し、更にＩ側の部屋の雰囲気を室温２０℃、関係湿度５０％の雰囲気に７２時間、II側の部屋の雰囲気を室温３０℃、関係湿度９０％の雰囲気に７２時間放置後の表装材付与板状材の縦、横方向の反りの変位を測定した。
【００３６】
〔試験２：耐衝撃性〕
ＪＩＳ Ａ １４２１，３．１（１９８１年）により測定したくぼみ直径が２０ｍｍ以下を合格とした。
【００３７】
〔試験３：表面平滑性〕
目視によって行った。
◎：平滑性が優秀で、小さな凹凸も認められなかった。
○：平滑性は良好であるが、多少の小さな凹凸が認められた。
×：平滑性不可で、大きな凹凸が認められた。
【００３８】
〔試験４：透湿度〕
ＪＩＳ Ｚ０２０８により測定した。実用上０．５ｇ／ｍ² ／２４時間以下が望ましい。
【００３９】
【効果】
この発明によれば、以上のように、軽くて強度の大きい紙製パネルを芯材とし、この両面に板紙とバリヤ性薄膜を積層したので、全体として吸湿性が小さく反りが生じず、耐衝撃性の大きい軽量の板状材が得られ、多様な用途に適用することができる。
【図面の簡単な説明】
【図１】この発明の板状材の一例を示す断面図
【図２】板状材の他の例を示す断面図
【図３】ハニカムの形状を示す平面図
【図４】板状材のさらに他の例を示す部分断面図
【図５】実施例及び比較例の試験結果を示す表
【図６】実施例及び比較例のバリヤ部材のみについて透湿度を試験した結果を示す表
【符号の説明】
１ 板状材
２ バリヤ性薄膜
３ 板紙
４ 強化紙
１０ 紙製パネル
１１ サブパネル
１２ 空隙
１３ ハニカムコア
１４ 厚紙[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a plate-like material used for building materials such as brans, doors, partitions, shelves, furniture, etc., transportation such as pallets for freight transportation, and packing materials.
[0002]
[Prior art]
A plate-like material in which a so-called particle board obtained by solidifying fine granular wood pieces having a particle diameter of about 1 mm with a synthetic resin is used as a core material and a polyester film is bonded to both surfaces thereof is commercially available. However, there is a problem that bending strength is low.
[0003]
In addition, there is one in which a foamed polystyrene is used as a core material, an iron foil having a thickness of about 70 μm is laminated on the both surfaces thereof, and decorative paper is laminated thereon. This is not heavy, and when incinerated as waste, black smoke is generated, resulting in pollution problems.
[0004]
[Problems of the Invention]
Accordingly, an object of the present invention is to provide a lightweight plate-like material having high strength, excellent planar smoothness, and little waste pollution.
[0005]
[Means for solving problems]
In order to solve the above-described problems, in the present invention, a paper panel having an apparent density of 0.15 to 0.4 having a large number of independent voids inside and having both surfaces formed in a flat plate shape, and both surfaces thereof than is moisture permeability which are laminated with barrier thin film follows 0.5g / m ^2/24 hours, basis weight to form a plate-shaped member by 100 g / m ² or more paperboard.
[0006]
The paper panel is formed by a panel obtained by bonding two paper molding panels.
[0007]
Reinforcing paper can be laminated on the outermost surface of the plate material to further smooth the surface of the plate material.
[0008]
[Embodiment]
Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, a plate-like material 1 of the present invention is obtained by laminating a barrier thin film 2 and a paperboard 3 on both surfaces of a paper panel 10. As the paper panel 10, a molded panel (for example, a product name grid core panel—hereinafter referred to as GCP; manufactured by Nippon Cement Co., Ltd.) in which two sub-panels 11 and 11 obtained by pulping waste paper or the like and compressing and molding them is bonded. is there. This GCP has a honeycomb structure in which each sub-panel 11 has an independent substantially semi-elliptical spherical space 12 and is bonded in correspondence with the space 12 of the other sub-panel 11 to form an independent elliptical spherical space. ing.
[0009]
In addition, as shown in FIG. 2, cardboard 14 or 14 may be pasted on both sides of a paper honeycomb core 13. The apparent density of the paper panel 10 is 0.15 to 0.4. If it is less than 0.15, the mechanical strength is inferior, and if it exceeds 0.4, the overall weight becomes too large and the cost also increases. More preferably, it is the range of 0.18-0.27. And it is preferable that impact resistance is also large. For example, the indentation diameter is 20 or less, more preferably 15 or less (JIS A1421, 3.1, 1981). In addition, the shape of the independent space | gap does not ask | require. An arbitrary shape such as an oval or a polygon such as a hexagon as shown in FIG. 3 is arbitrary. Moreover, although the thickness of the panel 10 is about 10-30 mm, it can select suitably according to a use.
[0010]
Since the paper panel 10 is warped by absorbing moisture in the air as it is, it is preferably shielded by the barrier thin film 2. Examples of the barrier thin film 2 include metal foils such as aluminum foils and iron foils, aluminum foils having a thickness of 7 to 20 μm, metal deposition films obtained by depositing metals such as aluminum and silver on synthetic resin films such as polyester and polypropylene, A metal oxide vapor-deposited film in which a metal oxide such as Al ₂ O ₃ is vapor-deposited on a synthetic resin film, a synthetic resin film in which an inorganic oxide such as SiO ₂ or SiO ₃ is vapor-deposited, or the like is used. The thickness of these deposited films is preferably 200 to 1500 angstroms. This is because the barrier property is not sufficient when the thickness is less than 200 angstroms, and the barrier property is not so high when the thickness exceeds 1500 angstroms, resulting in an increase in cost. Moisture permeability of this barrier thin film 2 is required to be 0.5 g / m ^2/24 hours (JIS Z0208) below. If it exceeds 0.5, the plate-like material 1 may be warped.
[0011]
Since the paper panel 10 has a relatively large surface roughness and has an average of 0.1 to 0.2 mm, the paper board 3 is used to conceal the unevenness and smooth the outer surface of the plate-like material 1. Laminate. The basis weight of the paperboard 3 needs to be 100 g / m ² or more. This is because the unevenness cannot be sufficiently concealed at 100 g / m ² and the surface smoothness may be impaired. Preferably, a ^{250g / m 2 ~350g / m 2} . Using too thick ones only increases costs.
[0012]
The stacking order of the barrier thin film 2 and the paperboard 3 may be the outer surface of the thin film 2 and the inner surface of the paperboard 3 as shown in FIG. And since the surface of the paperboard 3 also has unevenness of about 20 to 40 μm on average, when further smoothness is required, as shown in FIG. It is preferable to laminate a reinforced paper 4 on the outermost surface. When the plate-like material 1 is used for bran or the like, a further smoothness can be imparted to the decorative paper to be put thereon.
[0013]
Examples and comparative examples are given below.
[0014]
Examples 1-7
The main epoxy resin KBK-E57 is used on both sides of a single plate GCP (manufactured by Nippon Cement Co., Ltd., hereinafter the same) having an apparent density of 0.20, a thickness of 20 mm, a width of 930 mm, and a length of 2000 mm. 80 to 200 g / m ^{2 of} an adhesive containing 100 parts by weight of a curing agent and 100 parts by weight of a curing agent (manufactured by NSC Japan) was applied, and cut into a width of 935 mm and a length of 2010 mm prepared in advance on a flat work table. Set the adhesive coated GCP on the surface with the white cardboard of the cover material facing up, aligning the center of the cover material and the center, and center the GCP with the white cardboard surface of the cover material facing down on the opposite surface Set together. It was transferred to a cold press machine, pressured at 3 tons when 50 sets were manufactured, and allowed to stand for 24 hours in that state, and when the curing reaction of the adhesive was completed, a composite barrier surface material-applied GCP was obtained.
[0015]
In addition, about 1 g / m ^{2 of} coating type acrylic resin (trade name: Movinyl 987, manufactured by Hoechst Chemical Co., Ltd.) is applied to the surface of the aluminum foil with a continuous laminating machine (solid content), and the cover material is various types of paper. And dried and then cut into a width of 935 mm and a length of 2010 mm.
[0016]
The laminated structure of the cover material is as follows.

[0017]
[Example 8]
100 g of ethylene-vinyl acetate copolymer resin (manufactured by Konishi Co., Ltd.) is applied on both sides of a single plate GCP having an apparent density of 0.20, a thickness of 20 mm, a width of 930 mm, and a length of 2000 mm using a reverse roll type adhesive application machine. / m ² was applied, the width previously prepared on a planar work table 935Mm, special paperboard upholstery was cut to a length 2010mm on the face of the state in which the upper, the face material and the center of the adhesive application GCP It was set while aligning, and it was further set with the center of the GCP centered on the opposite side with the special paperboard surface of the cover material facing down. It was transferred to a cold press machine. When 50 sets were manufactured, the pressure was increased to 1.5 tons, and left as it was for 48 hours. .
[0018]
The outer cover material was coated with about 1 g / m ^{2 of} emulsion type acrylic resin (Hoechst Synthetic Co., Ltd.) (solid content) on a 15 μm aluminum foil surface with a continuous laminating machine and pasted with 210 g / m ² special paperboard. After being combined and dried, it is cut into a width of 935 mm and a length of 2010 mm.
[0019]
[Example 9]
On both sides of a single plate GCP with an apparent density of 0.20, a thickness of 20 mm, a width of 930 mm, and a length of 2000 mm, using a reverse roll type adhesive application machine, 100 parts by weight of the main component epoxy resin KBK-E57 and 100 weights of the curing agent 100 g / m ^{2 of} an adhesive containing 100 parts of an adhesive (manufactured by NSC Japan Co., Ltd.) was applied, and a special board made of a cover material cut to a width of 935 mm and a length of 2010 mm prepared on a flat work table was placed on top. On the surface in the state, the adhesive-coated GCP was set while aligning the cover material and the center, and on the opposite surface, the GCP was set with the special paperboard surface of the cover material facing down. It was transferred to a cold press machine, pressured at 3 tons when 50 sets were manufactured, and left as it was for 24 hours, and when the curing reaction of the adhesive was completed, it was designated as GCP with cover material.
[0020]
In addition, the surface material is a low density polyethylene resin (trade name: Sumikasen L-705, Sumitomo Chemical Co., Ltd.) on a special paperboard (manufactured by Manei Paper Co., Ltd.) with a basis weight of 210 g / m ² by a continuous resin extrusion laminating machine. (Made by company) is extruded by 15 μm in thickness, bonded to 9 μm aluminum foil, and cut into a width of 935 mm and a length of 2010 mm.
[0021]
Examples 10-12
100 parts by weight of epoxy resin KBK-E57 and 100 parts by weight of curing agent on both sides of a single plate GCP having an apparent density of 0.20, thickness of 20 mm, width of 930 mm, and length of 2000 mm using a reverse roll type adhesive application machine Surface with white cardboard of the covering material applied to 100 g / m ^{2 of the} blended adhesive (manufactured by NSC Co., Ltd.) and cut to a width of 935 mm and a length of 2010 mm prepared on a flat work table. Above, the adhesive-coated GCP was set while aligning the cover material and the center, and further set on the opposite surface with the white cardboard surface of the cover material facing down and aligning the center with the GCP. It was transferred to a cold press machine, pressured at 3 tons when 50 sets were manufactured, and left as it was for 24 hours, and when the curing reaction of the adhesive was completed, it was designated as GCP with cover material.
[0022]
In addition, the surface material is a 250 μm thick silica-deposited 12 μm polyester film (trade name: Tech Barrier S, manufactured by Mitsubishi Chemical Co., Ltd.) and a 500 μm thick alumina-deposited 12 μm polyester film (Toyo Metallizing Co., Ltd.) by a continuous dry laminating machine. And a 500-silica vapor-deposited polyester film surface as described above, a two-component polyurethane-based dry laminate adhesive (trade name: Takelac A910 / Takenate A-3 = 100 parts / 10 parts Takeda Pharmaceutical Co., Ltd.) 3 After applying 5g / m ² (solid content) and drying, each was bonded to 280g / m ² white cardboard, 280g / m ² white cardboard and 210g / m ² special paperboard in an aging furnace at 40 ° C After leaving for 72 hours to complete the curing reaction of the adhesive, the width was 935 mm and the length was 2 One in which was cut to 10mm.
[0023]
The laminated structure of the cover material is as follows.

[0024]
[Comparative Example 1]
On both sides of a single plate GCP with an apparent density of 0.20, a thickness of 20 mm, a width of 930 mm, and a length of 2000 mm, using a reverse roll type adhesive application machine, 100 parts by weight of the main component epoxy resin KBK-E57 and 100 weights of the curing agent 120 g / m ^{2 of a} partially blended adhesive (manufactured by NSC Japan Co., Ltd.) was applied to the surface of the surface covering material cut in advance to a width of 935 mm and a length of 2010 mm on a flat work table. Was set while aligning the center of the cover material and the center, and was further set on the opposite surface while aligning the center with the GCP of the cover material. It was transferred to a cold press machine, pressured at 3 tons when 50 sets were manufactured, and left as it was for 24 hours, and when the curing reaction of the adhesive was completed, it was designated as GCP with cover material. Kraft paper having a basis weight of 100 g / m ² was used as the cover material.
[0025]
[Comparative Example 2]
A surface-applied material-applied GCP was produced in the same manner as in Example 1 except that instead of the aluminum foil of Example 1, a 12 μm polyester film alone (manufactured by Teijin Limited) was used.
[0026]
[Comparative Example 3]
Adhesion of two-component polyurethane-based dry laminate on both sides of a single-plate particle board (manufactured by Okura Kogyo Co., Ltd.) with an apparent density of 0.70, thickness of 15 mm, width of 930 mm, and length of 2000 mm using a reverse roll type adhesive application machine The agent (trade name: Takelac A910 / Takenate A-3 = 100 parts / 10 parts, manufactured by Takeda Pharmaceutical Co., Ltd.) was dried 3-5 g / m ² (solid content) and prepared in advance on a flat work table. Set the adhesive-coated GCP on the surface of the cover material cut to a width of 935 mm and a length of 2010 mm while aligning the center of the cover material with the center of the cover material, and place the center on the GCP with the cardboard surface of the cover material facing down on the opposite surface. I set it together. It was transferred to a cold press machine, pressured by 1 ton when 50 sets were manufactured, and left as it was for 48 hours, and when the curing reaction of the adhesive was completed, a surface material-applied particle board was obtained.
[0027]
In addition, the cover material is a two-component polyurethane dry laminate adhesive (trade name: Takelac A910 / Takenate A-3 = 100 parts / 10 parts, Takeda) on a 25 μm polyester film (manufactured by Toyobo Co., Ltd.) using a dry laminator machine. Yakuhin Kogyo Co., Ltd. 3-5g / m ² (solid content) dried, dry laminate with 7μm aluminum foil, and the same two-component polyurethane dry laminate adhesive (trade name) : Takelac A910 / Takenate A-3 = 100 parts / 10 parts) was dried 3-5 g / m ² (solid content), dried and laminated with a 25 μm polyester film similar to the above, and then placed in an aging furnace at 40 ° C. 72 After being allowed to stand for a while to complete the curing reaction of the adhesive, it was cut into a width of 935 mm and a length of 2010 mm. Than it is.
[0028]
[Comparative Example 4]
100% of the main epoxy resin KBK-E57 is applied to both sides of a foamed styrene resin veneer (manufactured by JSP Co., Ltd.) having an apparent density of 0.03, a thickness of 20 mm, a width of 930 mm, and a length of 2000 mm using a reverse roll type adhesive application machine. 100 g / m ^{2 of} an adhesive in which 100 parts by weight of a curing agent is blended with 100 parts by weight of a curing agent (manufactured by NSC, Japan), and a surface that is cut to a width of 935 mm and a length of 2010 mm prepared in advance on a flat work table Set the adhesive-coated foamed styrene resin veneer on the surface with the iron foil facing up, while aligning the surface material with the center, and further on the opposite surface of the foamed styrene resin veneer It was set with the iron foil side down and the center aligned. When it was transferred to a cold press machine, the pressure was increased to 3 tons at the time when 50 sets were produced, and left as it was for 24 hours to complete the curing reaction of the adhesive. did.
[0029]
The surface covering material is laminated with 15 μm polyethylene by 70 μm iron foil (manufactured by Toyo Kohan Co., Ltd.) and 170 g / m ² basis weight of white liner paper (manufactured by Shirakawa Paper Co., Ltd.) using a continuous resin extrusion laminating machine. Further, the white liner paper surface of the material and a new paper are laminated with 15 μm polyethylene and cut into a width of 935 mm and a length of 2010 mm.
[0030]
[Comparative Example 5]
On both sides of a double-sided board paper honeycomb single plate with an apparent density of 0.13 having a thickness of 20 mm, a width of 930 mm, and a length of 2000 mm, using a reverse roll type adhesive application machine, 100 parts by weight of the main epoxy resin KBK-E57 Applying 100 g / m ^{2 of} an adhesive containing 100 parts by weight of 100 parts by weight (manufactured by NSC Japan Co., Ltd.) and preparing a white cardboard as a cover material cut in advance to a width of 935 mm and a length of 2010 mm on a flat work table Set the adhesive coated honeycomb veneer on the surface in the above state while aligning the cover material and the center, and further align the center on the honeycomb veneer with the white cardboard surface of the cover material facing down on the opposite surface I set it. It was transferred to a cold press machine, pressurized at 3 tons when 50 sets were manufactured, and allowed to stand for 24 hours in that state, and when the curing reaction of the adhesive was completed, a surface-applied honeycomb single plate was obtained.
[0031]
The surface material is laminated with 15 μm polyethylene by a continuous resin extrusion laminating machine with 70 μm iron foil (manufactured by Toyo Kohan Co., Ltd.) and white liner paper (manufactured by Shirakawa Paper Co., Ltd.) having a weight of 170 g / m ² . Further, the white liner paper surface of the material and a new paper are laminated with 15 μm polyethylene and cut into a width of 935 mm and a length of 2010 mm.
[0032]
[Comparative Example 6]
On both sides of a single plate GCP with an apparent density of 0.20, a thickness of 20 mm, a width of 930 mm, and a length of 2000 mm, using a reverse roll type adhesive application machine, 100 parts by weight of the main component epoxy resin KBK-E57 and 100 weights of the curing agent Surface with kraft paper of the cover material applied to 100 g / m ^{2 of} an adhesive (manufactured by NSC Japan Co., Ltd.) and cut to a width of 935 mm and a length of 2010 mm on a flat work table. Above, the adhesive-coated GCP was set while aligning the cover material and the center, and further set on the opposite surface with the craft paper surface of the cover material facing down and aligning the center with the GCP. It was transferred to a cold press machine, pressured at 3 tons when 50 sets were manufactured, and left as it was for 24 hours, and when the curing reaction of the adhesive was completed, it was designated as GCP with cover material.
[0033]
The surface covering material was 90 g / m ² by applying an emulsion type acrylic resin (trade name: Movinyl 987, manufactured by Hoechst Synthetic Co., Ltd.) of about 1 g / m ² (solid content) on a 15 μm aluminum foil surface by a continuous laminating machine. After being pasted with kraft paper and dried, it was cut into a width of 935 mm and a length of 2010 mm.
[0034]
The plate-like materials obtained in the above Examples and Comparative Examples were evaluated for warpage resistance, impact resistance, and surface smoothness by the following methods, and the results are shown in FIG. Moreover, the water vapor transmission rate was measured only about the barrier member. The result is shown in FIG. For Comparative Examples 1, 2, and 4, the moisture permeability of the entire cover material was measured.
[0035]
[Test 1: Warpage resistance]
In the center of one sealed room, the cover material-applied plate-like material obtained in the examples and comparative examples is set, and the atmosphere of the room on the I side is set to the atmosphere of room temperature 30 ° C. and the relative humidity 60% for 24 hours. Leave the room atmosphere in an atmosphere of room temperature 30 ° C. and relative humidity 60% for 24 hours, and the I side room atmosphere in room temperature 20 ° C. and relative humidity 50% atmosphere 72 hours, the II side room atmosphere in room temperature The displacement of the warp in the vertical and horizontal directions of the surface covering material-applied plate-like material after being left for 72 hours in an atmosphere of 30 ° C. and a relative humidity of 90% was measured.
[0036]
[Test 2: Impact resistance]
An indentation diameter measured according to JIS A 1421, 3.1 (1981) was 20 mm or less.
[0037]
[Test 3: Surface smoothness]
This was done by visual inspection.
A: Excellent smoothness and no small irregularities were observed.
○: Smoothness was good, but some small irregularities were observed.
X: Smoothness was not possible, and large irregularities were observed.
[0038]
[Test 4: moisture permeability]
It was measured according to JIS Z0208. Practically 0.5g / m ^2/24 hours or less.
[0039]
【effect】
According to the present invention, as described above, a light and strong paper panel is used as a core, and a paperboard and a barrier thin film are laminated on both sides. A lightweight plate-like material with high properties can be obtained, and can be applied to various uses.
[Brief description of the drawings]
1 is a cross-sectional view showing an example of a plate-like material of the present invention. FIG. 2 is a cross-sectional view showing another example of the plate-like material. FIG. 3 is a plan view showing the shape of a honeycomb. FIG. 5 is a partial cross-sectional view showing still another example. FIG. 5 is a table showing test results of Examples and Comparative Examples. FIG. 6 is a table showing results of moisture permeability tests on only barrier members of Examples and Comparative Examples. Explanation】
DESCRIPTION OF SYMBOLS 1 Plate-like material 2 Barrier thin film 3 Paperboard 4 Reinforced paper 10 Paper panel 11 Sub panel 12 Gap 13 Honeycomb core 14 Thick paper

Claims (3)

A paper panel having an apparent density of 0.15 to 0.4 having a large number of independent voids inside and formed on both sides of the plate, and a moisture permeability of 0.5 g / m ² laminated on both sides. A plate-like material comprising a barrier thin film of 24 hours or less and a paperboard having a basis weight of 100 g / m ² or more. The plate-like material according to claim 1, wherein the paper panel is a laminate of two paper molding panels. The plate material according to claim 1 or 2, wherein reinforcing paper is laminated on an outer surface of the barrier thin film or paperboard.

Images