JP5145067B2 - 印刷用塗工紙 - Google Patents
印刷用塗工紙 Download PDFInfo
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- JP5145067B2 JP5145067B2 JP2008031511A JP2008031511A JP5145067B2 JP 5145067 B2 JP5145067 B2 JP 5145067B2 JP 2008031511 A JP2008031511 A JP 2008031511A JP 2008031511 A JP2008031511 A JP 2008031511A JP 5145067 B2 JP5145067 B2 JP 5145067B2
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Landscapes
- Paper (AREA)
Description
本発明の塗工紙は、基紙と、該基紙上に少なくとも一層の顔料塗工層とを有し、該顔料塗工層は、顔料及び接着剤を主成分とするものであり、かつ、該顔料塗工層には、特定のダスト防止剤が含有されている。
表1又は表2に示す種類及び割合で、パルプ配合、下塗り塗工、顔料塗工を行い、印刷用塗工紙を得た。用いた顔料、原料および薬品は以下のとおりである。
・サイズ剤
(品番:AK400 星光PMC社製)
・澱粉
(品番:酸化澱粉 エリエール商工製)
(2)顔料
・カオリンクレー:微粒クレー
(品番:カオファイン、イメリス社製)
・炭酸カルシウム:重質炭酸カルシウム
(品番:ハイドロカーブ90K、オミヤコーリア社製)
(3)接着剤
・スチレン−ブタジエン共重合体ラテックス
(品番:XY4、日本エイアンドエル社製)
(4)ダスト防止剤
・ダスト防止剤A:メチルヘプタデカン酸カルシウム(和光純薬工業(株)製)
・ダスト防止剤B:ジメチルヘキサデカン酸カルシウム(和光純薬工業(株)製)
・ダスト防止剤C:エチルヘキサデカン酸カルシウム(和光純薬工業(株)製)
・ダスト防止剤D:トリメチルペンタデカン酸カルシウム(和光純薬工業(株)製)
・ダスト防止剤E:メチルエチルペンタデカン酸カルシウム(和光純薬工業(株)製)
・ダスト防止剤F:t−ブチルテトラデカン酸カルシウム(和光純薬工業(株)製)
・ダスト防止剤G:プロピルペンタデカン酸カルシウム(和光純薬工業(株)製)
・ダスト防止剤H:ステアリン酸カルシウム(和光純薬工業(株)製)
(5)蛍光染料
・蛍光染料(i):アミノスチルベン系スルホン酸誘導体、ヘキサタイプ
(品番:カヤホールEXN、日本化薬(株)製)
・蛍光染料(ii):アミノスチルベン系スルホン酸誘導体、テトラタイプ
(品番:ケイコールCSDL、日本曹達(株)製)
・蛍光染料(iii):オキサゾール系蛍光染料
(品番:ケイコールSN、日本曹達(株)製)
(製造手順)
原料パルプとしてLBKPとNBKPを80:20の質量割合で配合し、このパルプ(絶乾量)に対して、各々固形分で、内添サイズ剤(品番:AK−720H、ハリマ化成(株)製)0.02質量%、カチオン化澱粉(品番:アミロファックスT−2600、アベベジャパン(株)製)1.0質量%、及び歩留向上剤(品番:NP442、日産エカケミカルス(株)製)0.02質量%を添加してパルプスラリーを得た。
カラーアナライザー(型番:カラーi5、マクベスグレタグ社製)にて測定した。測定条件はUVIN(紫外線を含む)、SCI(反射光を含む)、C光源、視野角2°。
空気漏洩による平滑度試験機(パーカープリントサーフ、Lorentzen&Wet
tre社)にて、クランプ圧490Kpa、エアー圧1MPaで測定した。
オフセット印刷機(型番:リソピアL−BT3−1100、三菱重工業(株)製)を使用し、カラーインク(品番:ADVAN、大日本インキ化学工業(株)製)にてカラー4色印刷を5000部行った。この印刷面について、目視及びルーペ(10倍)にて、印刷物の印刷ムラを観察し、その程度を以下の評価基準に基づいて評価した。
◎:印刷ムラがなく、印刷適性に優れ、実使用可能。
○:印刷ムラが若干発生し、印刷適性が若干劣るが、実使用可能。
△:印刷ムラが多少発生し、印刷適性が多少劣るが、実使用可能。
×:印刷ムラが発生し、印刷適性に劣り、実使用不可能。
ソフトカレンダーの金属ロールに付着した、ラテックスおよびダスト防止剤の被膜による汚れについて、以下の評価基準に基づいて程度を評価した。
◎:ロール汚れがなかった。
○:ロール汚れが若干認められたが、操業性に問題はなかった。
△:ロール汚れが多少発生し、ロール掃除を行う必要があり、作業性が多少低下した。
×:ロール汚れが発生し、ロール掃除を頻繁に行う必要があり、作業性が低下した。
A4サイズ(210mm×297mm)のサンプル20枚を重ね、長辺の一方をホチキスで3箇所(上端、中央、下端)綴じて水平に置き、1枚ずつ合計10枚めくって、以下の評価基準に基づいて紙の剛性を評価した。
◎:めくった後の紙がへたれず、剛性に優れる。
○:めくった後の紙が若干へたれ、若干剛性に劣る。
△:めくった後の紙が多少へたれ、多少剛性に劣る。
×:めくった後の紙がへたれ、剛性に劣る。
Claims (5)
- 基紙と、当該基紙上に、顔料と接着剤を主成分とする少なくとも1層の塗工層を有する塗工紙であって、前記塗工層の塗工量が片面あたり10g/m 2 以下であり、前記塗工層に、分岐脂肪酸塩を含有し、前記分岐脂肪酸塩の炭素数が18以下であることを特徴とする塗工紙。
- 前記基紙がサイズ剤で下塗り塗工されていることを特徴とする、請求項1に記載の塗工紙。
- 前記顔料のうち、炭酸カルシウムが50質量%以上を占めることを特徴とする、請求項1または2に記載の塗工紙。
- 前記分岐脂肪酸塩の含有量が、前記塗工層に含まれる全顔料100質量部に対して0.05〜0.50質量部であることを特徴とする、請求項1〜3いずれか1項に記載の塗工紙。
- 前記塗工層に、さらに酸化ポリエチレンを含有することを特徴とする、請求項1〜4いずれか1項に記載の塗工紙。
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