JP2007270377A - Lightweight coated paper for printing - Google Patents

Lightweight coated paper for printing Download PDF

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JP2007270377A
JP2007270377A JP2006096991A JP2006096991A JP2007270377A JP 2007270377 A JP2007270377 A JP 2007270377A JP 2006096991 A JP2006096991 A JP 2006096991A JP 2006096991 A JP2006096991 A JP 2006096991A JP 2007270377 A JP2007270377 A JP 2007270377A
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paper
printing
weight
coated paper
calcium carbonate
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Satoshi Akaishi
聡 赤石
Masato Suzuki
政人 鈴木
Yuji Ono
裕司 小野
Satoshi Ishioka
智 石岡
Hidehiko Kai
秀彦 甲斐
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Nippon Paper Industries Co Ltd
Jujo Paper Co Ltd
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Nippon Paper Industries Co Ltd
Jujo Paper Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight coated paper for printing, which is used for offset printing, etc., especially on printing by a cold set type high speed rotary press using a penetration-drying ink, has a quick ink-setting property similar to conventional newsprint paper, is not sticky, has a high whiteness, is excellent in reproduction property and clearness of printed images, or the like, similar to a coated paper, has a high opacity and less strike through even though it is a light weight paper having a unit weight of ≤48 g/m<SP>2</SP>. <P>SOLUTION: This coated paper provided with a coated layer including a pigment and an adhesive on base paper, includes ≥60 wt.% deinked pulp (waste paper pulp) based on the base paper weight and 5 to 30 wt.% filler including calcium carbonate based on the base paper weight, has a coated layer having coated amount per one side of ≥0.5 g/m<SP>2</SP>and ≤3.0 g/m<SP>2</SP>, includes ≥50 pts.wt. calcium carbonate in the coated layer based on 100 pts.wt. pigment, and has a unit weight of the coated paper of ≤48 g/m<SP>2</SP>. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、印刷用微塗工紙において、特に浸透乾燥型インキをコールドセット型高速輪転印刷機で印刷する新聞印刷に用いた場合に、印刷作業性に優れ、かつ優れたカラー印刷品質を有する微塗工紙に関するものである。   The present invention has excellent printing workability and excellent color printing quality, particularly when used in newspaper printing for printing fine-coated paper for printing on a cold set type high-speed rotary printing press. It relates to fine coated paper.

近年、各種印刷技術の進歩により印刷機の印刷速度は一層高速化し、また多色印刷の割合も増えてきている。新聞印刷においてもその傾向にある。新聞用紙の多色印刷は、新聞印刷という即時大量印刷の必要性とコストの要請上、通常の印刷条件即ち通常の新聞用紙上に浸透乾燥型インキをコールドセット型高速輪転印刷機で印刷するという条件で行われている。
しかし上記のごとき通常の新聞印刷の条件で多色印刷したものの色や鮮明性等の品質は劣るため、良好な物が求められている。そのため、上質紙や中質紙の非塗工紙のものよりも、上質紙や中質紙の非塗工紙の上に顔料塗工層を設けた塗工紙、微塗工紙を用いて、画質の改善が行われている。
新聞社においては新聞の中の特に秀麗な印刷仕上げを要求されるカラー面、多色刷り込み広告あるいはチラシなどの印刷の場合は、コールドセット型高速輪転機を使用せず、通常の印刷用塗工紙等を用いて別印刷を行っており、その分輪転機は停止している状況である。これは、通常の新聞印刷に用いられる浸透型乾燥インキとコールドセット型高速輪転機を使用して、上質紙または中質紙の上に顔料塗工層を設けた通常の印刷用微塗工紙を使用する場合、低速で印刷すれば印刷効果は上がるが、コールドセット型即ちアフタードライヤーを持たない輪転機による印刷ではインキが乾燥しないため事実上使用できないのが実状である。また、現状の新聞用紙上に顔料塗工層を設けた場合でも、一般の非塗工紙の上に顔料塗工層を設けた場合と同様、インキの乾燥性が著しく悪く、浸透乾燥型インキをコールドセット型高速輪転機で塗工して仕上がりの良い多色印刷物を得ることはできない。
また、印刷品質を改良する一つの方法として、浸透乾燥型インキをヒートセット型印刷インキに替え、コールドセット型輪転機をドライヤー設備のあるヒートセット型印刷機に変更し、新聞用紙に印刷することが考えられる。この場合は設備コストを要し、印刷コストも高くなるという問題がある。
In recent years, the printing speed of a printing press has been further increased by the progress of various printing technologies, and the ratio of multicolor printing has increased. This is also the case in newspaper printing. Multi-color printing of newsprint is based on the need for immediate mass printing of newsprint and the demand for cost, so that penetrating dry ink is printed on a normal newsprint condition, that is, normal newsprint on a cold set type high-speed rotary press. Is done on condition.
However, the quality such as color and sharpness of the multi-colored printing under the normal newspaper printing conditions as described above is inferior, so that a good one is required. Therefore, using coated paper or fine coated paper with a pigment coating layer on high-quality paper or medium-sized paper non-coated paper rather than fine paper or medium-sized paper non-coated paper Improvements in image quality have been made.
In the case of printing on newspapers that require particularly fine print finishes, such as color surfaces, multi-color imprinted advertisements or flyers, a normal printing coating is not used. Separate printing is performed using paper or the like, and the rotary press is stopped. This is an ordinary fine coated paper for printing with a pigment coating layer on high-quality paper or medium-quality paper using a penetrating dry ink and a cold-set type high-speed rotary press used for ordinary newspaper printing. When printing is performed at low speed, the printing effect is improved. However, in the case of printing by a cold set type, that is, a rotary press without an after dryer, the ink is not dried, so it is practically impossible to use. In addition, even when a pigment coating layer is provided on current newsprint, the ink drying property is remarkably poor as in the case where a pigment coating layer is provided on general non-coated paper. It is not possible to obtain a multicolored print with good finish by coating with a high speed rotary press.
Also, as one way to improve print quality, replace the osmosis drying ink with heat-set printing ink, change the cold-set rotary press to a heat-set printing machine with dryer equipment, and print on newspaper. Can be considered. In this case, there is a problem that the equipment cost is required and the printing cost becomes high.

このため、カラー面、多色刷り込み広告あるいはチラシなどの印刷の場合においても、ヒートセット型輪転印刷機に変更することなく、通常の新聞印刷に用いられる浸透型乾燥インキとコールドセット型高速輪転機を用いて、画像再現性、鮮明性の良好なものが求められている。   For this reason, penetrating dry ink and cold set type high-speed rotary press used for ordinary newspaper printing without changing to a heat set type rotary press even when printing on color surfaces, multicolor imprinted advertisements or leaflets, etc. Are required to have good image reproducibility and sharpness.

このため、カラー印刷新聞の仕上がりを良好にするために、塗工新聞用紙の検討が行われてきている。   For this reason, in order to improve the finish of the color printed newspaper, examination of coated newspaper has been conducted.

例えば、吸油量が65cc/以上の顔料を含有する塗工層を設けた新聞印刷用紙が提案されている(特許文献1参照)。しかしながら、吸油量が高い顔料を含む塗工層は、印刷インキを多量に転移するため、印刷インキ量が多くなり、多色印刷では、インキセットが遅くなり、べたつきの問題が発生することがあった。また、原紙の動的濡れ値を規定し、カオリンと平均粒径を規定した顔料を併用することにより、インキセット適性やインキ濃度が優れていることが提案されている(特許文献2参照)が、多色印刷では、インキセットが遅くなり、べたつきの問題が発生することがあった。また、原紙上に1.0g/m2以上4.0g/m2未満の塗工層を有し、紙中水分を4.5%以下とした微塗工新聞用紙が提案されている(特許文献3参照)が、多色印刷した場合に、インキ乾燥性、べたつき等に劣る場合があった。 For example, a newspaper printing paper having a coating layer containing a pigment having an oil absorption of 65 cc / or more has been proposed (see Patent Document 1). However, a coating layer containing a pigment with a high oil absorption transfers a large amount of printing ink, so the amount of printing ink increases, and in multicolor printing, the ink setting becomes slow and stickiness may occur. It was. Further, it has been proposed that ink set suitability and ink density are excellent by using a pigment that defines the dynamic wetting value of the base paper and kaolin and the average particle size (see Patent Document 2). In multicolor printing, the ink setting becomes slow and stickiness may occur. Also it has a coating layer of less than 1.0 g / m 2 or more 4.0 g / m 2 on a base paper, fine coated paper sheet having the paper in water and 4.5% or less has been proposed (Patent However, when multicolor printing was performed, the ink drying property and stickiness were sometimes inferior.

以上のような状況から、浸透乾燥型インキを使用するコールドセット型高速輪転機による印刷において、インキセット性が遅くなく、べたつきがない印刷作業性に優れ、色再現性や鮮明性の良好な印刷適性を有する印刷用微塗工紙が強く要望されてきた。   From the above situation, when printing with a cold set type high-speed rotary press that uses osmotic dry ink, the ink setting is not slow, the sticky printing workability is excellent, and the color reproducibility and clearness are good. There has been a strong demand for finely coated paper for printing having suitability.

一方で、新聞印刷用紙の製造における近年の技術動向として、環境に対する意識の向上、コストダウン、作業の効率化などを背景とした、軽量化、中性抄紙化、故紙配合率の増加などが挙げられる。こうした技術的動向と、上に述べた多色印刷化の動向と合わせて、オフセット印刷用微塗工紙には、軽量で、白色度が高くかつ裏抜けが少なく、印刷適性が良好であることが要求されている。これらの要求を満たすため、例えば、二酸化チタン−炭酸カルシウム複合体を含有することを特徴とする米坪45g/m2以下のオフセット印刷用中性新聞用紙が提案されている(特許文献4参照)が、印刷品質が十分でなく、また、二酸化チタンは高価な顔料であり、コストが高く実用的ではなかった。 On the other hand, recent technological trends in the production of newspaper printing paper include weight reduction, neutral papermaking, and increase in the proportion of waste paper due to increased environmental awareness, cost reduction, and work efficiency. It is done. Combined with these technological trends and the trend of multicolor printing described above, the finely coated paper for offset printing must be lightweight, have high whiteness, have little show-through, and have good printability. Is required. In order to satisfy these requirements, for example, a neutral newspaper for offset printing having a weight of 45 g / m 2 or less, characterized by containing a titanium dioxide-calcium carbonate composite, has been proposed (see Patent Document 4). However, the printing quality is not sufficient, and titanium dioxide is an expensive pigment, which is expensive and impractical.

特開平1−174697号公報Japanese Patent Laid-Open No. 1-174697 特開平4−57988号公報Japanese Patent Laid-Open No. 4-57988 特開2003−286686号公報JP2003-286686A 特開2002−201592号公報JP 2002-201592 A

このような状況に鑑みて、本発明の課題は、オフセット印刷などの印刷用微塗工紙において、特に浸透乾燥型インキを使用するコールドセット型高速輪転機による印刷時に、従来の新聞用紙並みの敏速なインキセット性を有し、べたつきがなく、白色度が高く、塗工紙並の印刷画像の再現性及び鮮明性等に優れ、坪量48g/m2以下の軽量紙でありながら不透明度が高く、裏抜けが少ない印刷用微塗工紙を提供することにある。 In view of such a situation, the subject of the present invention is the same as that of conventional newspapers, especially in printing with a cold set type high-speed rotary press using penetrating dry ink in printing fine coated paper such as offset printing. It has a quick ink setting, no stickiness, high whiteness, excellent reproducibility and sharpness of printed images comparable to coated paper, and opacity while being a lightweight paper with a basis weight of 48 g / m 2 or less. The object of the present invention is to provide a finely coated paper for printing that is high and has little show-through.

本発明者等は、上記課題について鋭意研究した結果、原紙上に顔料および接着剤を含有する塗工層を設けてなる塗工紙において、脱墨パルプ(故紙パルプ)を原紙重量当たり60重量%以上、炭酸カルシウムを含有する填料を原紙重量当たり5〜30重量%含有し、塗工量が片面当たり0.5g/m以上3.0g/m以下の塗工層を原紙に設け、塗工層中に顔料100重量部当たり炭酸カルシウムを50重量部以上含有することにより、印刷物のべたつきが少なく印刷作業性に優れ、白色度が高く、かつ優れたカラー印刷画像の再現性及び鮮明性に優れ、不透明度が高く裏抜けが少ない印刷用微塗工紙を得ることができ、前記課題が解決されることを見出し本発明に至った。
原紙中に脱墨パルプ(故紙パルプ)を60重量%以上配合することが重要であり、相対的に不透明度、裏抜け値が高く、べたつきが改善され、引張強度が良好な印刷用微塗工紙が得られる。また、 優れたカラー印刷適性および印刷物のべたつきを低減するために、原紙中の填料の割合を調整し、原紙上に微塗工層を設け、微塗工層の組成を調整することが重要である。本発明においては、填料として炭酸カルシウムを含有する填料を原紙に5〜30重量%含有し、該原紙に塗工量が片面0.5g/m以上3.0g/m以下、更に好ましくは片面1.0g/m以上2.0g/m以下の塗工層を設けることにより、相対的にインキ着肉性が良好で印刷光沢度が高く、印刷物のべたつきが少なく、白色度および裏抜け値の高い新聞印刷用微塗工紙が得られる。さらに、塗工顔料100重量部当たり炭酸カルシウムを50重量部以上とすることにより、より白色度が高く、かつ不透明度が高く裏抜けが少なく、印刷物のべたつきがより少なく、印刷物の再現性、鮮明性が良好な新聞印刷用微塗工紙を得ることができる。
As a result of intensive studies on the above problems, the present inventors, as a result, in a coated paper in which a coating layer containing a pigment and an adhesive is provided on a base paper, the deinked pulp (spent paper pulp) is 60% by weight per base paper weight. The filler containing calcium carbonate is contained in the base paper in an amount of 5 to 30% by weight per base paper weight, and the coating amount is 0.5 g / m 2 or more and 3.0 g / m 2 or less per side. By containing 50 parts by weight or more of calcium carbonate per 100 parts by weight of pigment in the work layer, there is little stickiness of the printed matter, excellent printing workability, high whiteness, and excellent color print image reproducibility and sharpness. The present inventors have found that a finely coated paper for printing with excellent opacity and low back-through can be obtained, and found that the above-mentioned problems can be solved.
It is important to mix 60% by weight or more of deinked pulp (spent paper pulp) into the base paper, and it has relatively high opacity and back-through value, improved stickiness, and fine coating for printing with good tensile strength. Paper is obtained. It is also important to adjust the proportion of the filler in the base paper, provide a fine coating layer on the base paper, and adjust the composition of the fine coating layer in order to reduce excellent color printability and stickiness of the printed matter. is there. In the present invention, a filler containing calcium carbonate as a filler contain 5 to 30 wt% in the base paper, coating amounts on the base paper on one side 0.5 g / m 2 or more 3.0 g / m 2 or less, more preferably By providing a coating layer of 1.0 g / m 2 or more and 2.0 g / m 2 or less on one side, the ink inking property is relatively good, the printing glossiness is high, the stickiness of the printed matter is small, the whiteness and the back side A finely coated paper for newspaper printing with a high missing value is obtained. Furthermore, by setting the calcium carbonate to 50 parts by weight or more per 100 parts by weight of the coating pigment, the whiteness is higher, the opacity is higher, the back-through is less, the stickiness of the printed matter is less, the reproducibility of the printed matter, and the sharpness. A finely coated paper for newspaper printing with good properties can be obtained.

本発明により、 オフセット印刷などの印刷用微塗工紙において、特に浸透乾燥型インキを使用するコールドセット型高速輪転機による新聞印刷時に、従来の顔料塗工層を設けていない新聞用紙並みの敏速なインキセット性を有し、べたつきがなく印刷作業性に優れ、白色度が高く、印刷画像の再現性及び鮮明性に優れ、不透明度が高く、裏抜けが少ない印刷用微塗工紙を得ることができる。 According to the present invention, fine coated paper for printing such as offset printing, particularly in newspaper printing with a cold set type high-speed rotary press using penetrating dry ink, is as quick as conventional newspaper paper without a pigment coating layer. A finely coated paper for printing that has excellent ink setting properties, no stickiness, excellent printing workability, high whiteness, excellent print image reproducibility and sharpness, high opacity, and low back-through be able to.

本発明の原紙に配合するパルプとしては、原紙中に脱墨パルプ(故紙パルプ)を60重量%以上配合することにより、べたつきや裏抜けが改善される。特に、脱墨パルプは、化学パルプよりも不透明度が高くなりやすく、また機械パルプよりも吸油度が低いことから良好なインキセット性が得られるために、べたつきが改善される。脱墨パルプが60重量%未満の場合、化学パルプを併用すると不透明度および裏抜け値が低下し、また、機械パルプを併用すると、引張強度が低下するため印刷時の断紙が起こる問題がある。
脱墨パルプ以外には、化学パルプ(針葉樹の晒または未晒クラフトパルプ、広葉樹の晒または未晒クラフトパルプ等)、機械パルプ(グランドパルプ、サーモメカニカルパルプ、ケミサーモメカニカルパルプ等)を任意の割合で混合して使用することができる。
本発明の原紙に配合する填料としては、印刷物のべたつきを改善し、白色度、不透明を高くし、印刷品質を向上させるために、炭酸カルシウムを含有する填料を原紙重量当たり5〜30重量%、好ましくは8〜30重量%、より好ましくは11〜30重量%、更に好ましくは15〜30重量%含有することが必要である。本発明の炭酸カルシウムを含有する炭酸カルシウムとは、重質炭酸カルシウム、軽質炭酸カルシウムのいずれかであり、また形状についても針状、柱状、紡錘状、球状、立方形状、ロゼッタ型(いがぐり状)のいずれでも良い。この中でも特にロゼッタ型のカルサイト系の軽質炭酸カルシウムを用いた場合に、不透明度、裏抜け改善効果に優れる。また、本発明においては、炭酸カルシウムを含む軽質炭酸カルシウム−シリカ複合物も使用することができる。
軽質炭酸カルシウム−シリカ複合物とは、軽質炭酸カルシウム粒子の表面をシリカで被覆した軽質炭酸カルシウム−シリカ複合物であり、全量または一部に使用することが好ましい。この軽質炭酸カルシウム−シリカ複合粒子を使用することにより、塗工紙密度は低く、十分な剛度を備えた塗工紙を製造することができる。軽質炭酸カルシウム−シリカ複合粒子は、(印刷物のべたつき低減)効果に優れる。また、カレンダー処理を行った後でも、低密度を維持し高平滑度といった相反する性質を発揮することができる。本発明においては、該軽質炭酸カルシウム−シリカ複合粒子を紙中填料として5〜25重量%の割合で含有していることが好ましく、10〜20重量%がより好ましい。該紙中填料が5固形分重量%未満では、(印刷物のべたつき低減)効果は十分ではなく、25重量%を超えた場合は、(塗工紙の引張強度が低下する)。また、軽質炭酸カルシウム粒子の表面をシリカで被覆した軽質炭酸カルシウム-シリカ複合物は、(印刷物のべたつきとインキ着肉性)のバランスをより良好にするために、軽質炭酸カルシウムとシリカとの固形分重量比が、軽質炭酸カルシウム/シリカ=30/70〜70/30であることが好ましい。軽質炭酸カルシウムの固形分重量比が軽質炭酸カルシウム/シリカ=30/70より小さい場合、塗工紙の印刷時の表面強度が劣る傾向にある。軽質炭酸カルシウムの固形分重量比が軽質炭酸カルシウム/シリカ=70/30より多い場合、べたつきの改善効果がより大きくない。また、複合物に使用する軽質炭酸カルシウムについては、針状、柱状、紡錘状、球状、立方形状、ロゼッタ型のいずれでも良いが、この中でも特にロゼッタ型のカルサイト系の軽質炭酸カルシウムを用いた場合に、特に裏抜け、不透明度改善効果が向上する。また、填料の平均粒子径は、レーザー回折法の値で1.0〜10.0μmが好ましい。
本発明においては、填料として不透明度、裏抜け向上の点からロゼッタ型の軽質炭酸カルシウム、軽質炭酸カルシウム−シリカ複合物を含有することが好ましい。
また、本発明においては、炭酸カルシウムを含有する填料以外に、水和珪酸、ホワイトカーボン、タルク、カオリン、クレー、酸化チタン、合成樹脂填料等の公知の填料を併用することができる。その他に必要に応じて、硫酸バント、サイズ剤、紙力増強剤、歩留まり向上剤、着色剤、染料、消泡剤等を含有してもよい。また、パルプの繊維間結合を阻害する作用を持つ有機化合物を含有することにより、低密度化した原紙を用いてもよい。
配合し得るパルプの結合阻害剤としては、製紙用で紙の嵩高化のために上市された低密度化剤(あるいは嵩高剤)が適しており、例えば、WO98/03730号公報、特開平11−200284号公報、特開平11−350380号公報、特開2003−96694号公報、特開2003−96695号公報等に示される化合物等が挙げられる。具体的には、高級アルコールのエチレンおよび/またはプロピレンオキサイド付加物、多価アルコール型非イオン型界面活性剤、高級脂肪酸のエチレンオキサイド付加物、多価アルコールと脂肪酸のエステル化合物、多価アルコールと脂肪酸のエステル化合物のエチレンオキサイド付加物、あるいはポリアルキレンポリアミン・脂肪酸・エピクロロヒドリン縮合物等である。販売されている嵩高薬品としては、BASF社のスルゾールVL、Bayer社のバイボリュームPリキッド、花王(株)のKB−08T、08W、KB110、115、三晶(株)のリアクトペイク、日本PMC(株)のPT−205、日本油脂(株)のSF−B100、DU3605、荒川化学(株)のR21001といった薬品があり、単独あるいは2種以上を併用してもよい。
本発明の塗工層に用いられる顔料としては、炭酸カルシウムを顔料100重量部当たり50重量部以上含有することが必要である。炭酸カルシウムとしては、レーザー回折式で測定した2μmより小さい粒子径の累積堆積率が70%以上の炭酸カルシウムが好ましく、より好ましくは重質炭酸カルシウムを顔料100重量部当たり50重量部以上、更に好ましくは70重量部以上配合することにより、印刷物のべたつきの低減や白色度の向上等の印刷品質が向上する。炭酸カルシウム以外の顔料としては、塗工紙用に従来から用いられている、カオリン、クレー、タルク、二酸化チタン、硫酸バリウム、硫酸カルシウム、酸化亜鉛、珪酸、珪酸塩、コロイダルシリカ、サチンホワイトなどの無機顔料、プラスチックピグメントなどの有機顔料であり、これらの顔料は必要に応じて単独または2種類以上併用して使用できる。
本発明に用いられる接着剤としては塗工紙用に従来から用いられている、スチレン・ブタジエン系、スチレン・アクリル系、エチレン・酢酸ビニル系、ブタジエン・メチルメタクリレート系、酢酸ビニル・ブチルアクリレート系等の各種共重合体(ラテックス)、あるいはポリビニルアルコール、無水マレイン酸共重合体、アクリル酸・メチルメタクリレート系共重合体等の合成接着剤;カゼイン、大豆蛋白、合成蛋白などの蛋白質類;酸化澱粉、陽性澱粉、尿素燐酸エステル化澱粉、ヒドロキシエチルエーテル化澱粉などのエーテル化澱粉、デキストリンなどの澱粉類;カルボキシメチルセルロース、ヒドロキシメチルセルロース、ヒドロキシエチルセルロース等のセルロース誘導体などの通常の塗工紙用接着剤1種以上を便宜選択して使用される。特に、スチレン・ブタジエン系ラテックスもしくはポリビニルアルコールを含有することにより、オフセット印刷時におけるブランケットへの紙粉の堆積、いわゆるブランケットパイリングが低減される。また、ポリビニルアルコールを使用することにより、べたつきが更に改善される。本発明においては、インキ着肉性、べたつきの点から、これらの接着剤は顔料100重量部に対して30〜80重量部使用することが好ましく、更に好ましくは30〜60重量部である。接着剤が30重量部未満では、表面強度が低下しやすく紙粉が発生しやすい。80重量部を超えるとインキ着肉性が低下し、べたつきも悪くなる。新聞印刷では、1台のオフセット印刷機において1日に10万部以上印刷することが多く、このような長時間の印刷においては、パイリングが少ないことが特に重要である。
ランケットまた、白色度、インキ着肉性、べたつき、表面強度をバランスよく良好にするために、澱粉/ラテックスあるいはポリビニルコールの配合の重量比は、5/35〜35/5が好ましく、より好ましくは10/30〜30/10である。また、本発明においては、接着剤として澱粉を顔料100重量部に対して3重量部以上配合することが好ましい。
As the pulp to be blended with the base paper of the present invention, stickiness and show-through are improved by blending 60% by weight or more of deinked pulp (spent paper pulp) into the base paper. In particular, the deinked pulp tends to have higher opacity than the chemical pulp, and the oil absorption is lower than that of the mechanical pulp, so that a good ink setting property can be obtained, so that the stickiness is improved. When the deinked pulp is less than 60% by weight, the opacity and the penetration value are lowered when the chemical pulp is used together, and when the mechanical pulp is used together, there is a problem that the paper breaks during printing because the tensile strength is lowered. .
In addition to deinked pulp, chemical pulp (conifer bleached or unbleached kraft pulp, hardwood bleached or unbleached kraft pulp, etc.), mechanical pulp (ground pulp, thermomechanical pulp, chemithermomechanical pulp, etc.) in any proportion Can be mixed and used.
As a filler blended in the base paper of the present invention, in order to improve the stickiness of the printed matter, increase the whiteness and opacity, and improve the printing quality, the filler containing calcium carbonate is 5 to 30% by weight per base paper weight, It is necessary to contain 8 to 30% by weight, more preferably 11 to 30% by weight, and still more preferably 15 to 30% by weight. The calcium carbonate containing calcium carbonate of the present invention is either heavy calcium carbonate or light calcium carbonate, and the shape is also needle-like, columnar, spindle-like, spherical, cubic, or rosetta-type. Either of them is acceptable. Among these, particularly when Rosetta-type calcite light calcium carbonate is used, the opacity and the through-through improvement effect are excellent. In the present invention, a light calcium carbonate-silica composite containing calcium carbonate can also be used.
The light calcium carbonate-silica composite is a light calcium carbonate-silica composite in which the surface of light calcium carbonate particles is coated with silica, and is preferably used in whole or in part. By using the light calcium carbonate-silica composite particles, the coated paper density is low, and coated paper having sufficient rigidity can be produced. Light calcium carbonate-silica composite particles are excellent in the effect of (reducing stickiness of printed matter). Moreover, even after performing the calendar process, it is possible to maintain contradictory properties such as maintaining a low density and high smoothness. In the present invention, the light calcium carbonate-silica composite particles are preferably contained in a proportion of 5 to 25% by weight, more preferably 10 to 20% by weight, as a filler in paper. When the filler in the paper is less than 5% by weight, the effect of (reducing stickiness of the printed matter) is not sufficient, and when it exceeds 25% by weight (the tensile strength of the coated paper is reduced). In addition, the light calcium carbonate-silica composite with the surface of light calcium carbonate particles coated with silica is a solid solution of light calcium carbonate and silica in order to improve the balance of (stickiness of printed matter and ink setting). The weight ratio is preferably light calcium carbonate / silica = 30/70 to 70/30. When the solid weight ratio of light calcium carbonate is smaller than light calcium carbonate / silica = 30/70, the surface strength during printing of the coated paper tends to be inferior. When the solid weight ratio of light calcium carbonate is more than light calcium carbonate / silica = 70/30, the sticky improvement effect is not greater. The light calcium carbonate used in the composite may be any of acicular, columnar, spindle, spherical, cubic, and rosetta types. Among them, rosetta-type calcite light calcium carbonate is used. In particular, the effect of improving the strikethrough and opacity is improved. Further, the average particle diameter of the filler is preferably 1.0 to 10.0 μm in terms of a laser diffraction method.
In the present invention, it is preferable to contain a rosetta-type light calcium carbonate or a light calcium carbonate-silica composite as a filler from the viewpoint of improving opacity and penetration.
In the present invention, known fillers such as hydrated silicic acid, white carbon, talc, kaolin, clay, titanium oxide and synthetic resin filler can be used in combination with the filler containing calcium carbonate. In addition, if necessary, it may contain a sulfate bunt, a sizing agent, a paper strength enhancer, a yield improver, a colorant, a dye, an antifoaming agent and the like. Moreover, you may use the base paper reduced in density by containing the organic compound which has the effect | action which inhibits the fiber fiber connection of a pulp.
As a binding inhibitor for pulp that can be blended, a low-density agent (or bulking agent) marketed for papermaking to increase the bulk of paper is suitable. For example, WO98 / 03730, JP-A-11- Examples thereof include compounds shown in Japanese Patent Laid-Open No. 20020028, Japanese Patent Laid-Open No. 11-350380, Japanese Patent Laid-Open No. 2003-96694, Japanese Patent Laid-Open No. 2003-96695, and the like. Specifically, higher alcohol ethylene and / or propylene oxide adduct, polyhydric alcohol type nonionic surfactant, higher fatty acid ethylene oxide adduct, polyhydric alcohol and fatty acid ester compound, polyhydric alcohol and fatty acid An ethylene oxide adduct of the above ester compound, or a polyalkylene polyamine / fatty acid / epichlorohydrin condensate. Bulky chemicals on the market include BASF's Sulsol VL, Bayer's Bi-Volume P Liquid, Kao's KB-08T, 08W, KB110, 115, Sanki's React Pake, Japan PMC ), PT-205, Nippon Oil & Fat Co., Ltd., SF-B100, DU3605, Arakawa Chemical Co., Ltd., R21001, and these may be used alone or in combination of two or more.
As a pigment used in the coating layer of the present invention, it is necessary to contain 50 parts by weight or more of calcium carbonate per 100 parts by weight of the pigment. As the calcium carbonate, a calcium carbonate having a cumulative deposition rate of a particle size smaller than 2 μm measured by a laser diffraction method is preferably 70% or more, more preferably 50 parts by weight or more, more preferably 50 parts by weight or more of heavy calcium carbonate per 100 parts by weight of the pigment. By blending 70 parts by weight or more, printing quality such as reduction in stickiness of printed matter and improvement in whiteness is improved. Examples of pigments other than calcium carbonate include kaolin, clay, talc, titanium dioxide, barium sulfate, calcium sulfate, zinc oxide, silicic acid, silicate, colloidal silica, and satin white, which are conventionally used for coated paper. Organic pigments such as inorganic pigments and plastic pigments, and these pigments can be used alone or in combination of two or more as required.
Adhesives used in the present invention are conventionally used for coated paper, such as styrene / butadiene, styrene / acrylic, ethylene / vinyl acetate, butadiene / methyl methacrylate, vinyl acetate / butyl acrylate, etc. Various types of copolymers (latex), or synthetic adhesives such as polyvinyl alcohol, maleic anhydride copolymer, acrylic acid / methyl methacrylate copolymer; proteins such as casein, soy protein, synthetic protein; oxidized starch, Normal starch for coated paper, such as positive starch, etherified starch such as urea phosphate esterified starch, hydroxyethyl etherified starch, starch such as dextrin; cellulose derivatives such as carboxymethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, etc. Use the above for your convenience It is. In particular, the inclusion of styrene / butadiene latex or polyvinyl alcohol reduces the accumulation of paper dust on the blanket during offset printing, so-called blanket piling. Moreover, stickiness is further improved by using polyvinyl alcohol. In the present invention, from the viewpoint of ink inking property and stickiness, these adhesives are preferably used in an amount of 30 to 80 parts by weight, more preferably 30 to 60 parts by weight, based on 100 parts by weight of the pigment. If the adhesive is less than 30 parts by weight, the surface strength tends to decrease and paper dust tends to be generated. If it exceeds 80 parts by weight, the ink inking property is lowered and stickiness is also deteriorated. In newspaper printing, more than 100,000 copies are often printed on a single offset printing machine per day, and in such long-time printing, it is particularly important that there is little piling.
In order to make the whiteness, ink inking property, stickiness, and surface strength in a good balance, the weight ratio of starch / latex or polyvinyl coal is preferably 5/35 to 35/5, more preferably 10/30 to 30/10. Moreover, in this invention, it is preferable to mix | blend 3 weight part or more of starch as an adhesive agent with respect to 100 weight part of pigments.

本発明の塗工液には、分散剤、増粘剤、保水剤、消泡剤、耐水化剤等の通常使用される各種助剤を使用してもよい。 In the coating liquid of the present invention, various commonly used auxiliaries such as a dispersant, a thickener, a water retention agent, an antifoaming agent, and a water resistance-imparting agent may be used.

塗工原紙としては、軽量新聞用紙に用いられる原紙や、軽量微塗工紙に用いられる原紙が便宜用いられており、坪量が30〜47g/m程度のものが用いられている。原紙の抄紙方法については特に限定されるものではなく、トップワイヤー等を含む長網マシン、丸網マシン、二者を併用した板紙マシン、ヤンキードライヤーマシン等を用いて、酸性抄紙、中性抄紙、アルカリ性抄紙方式で抄紙した原紙のいずれであってもよい。また、サイズプレス、ビルブレード、ゲートロールコータ、プレメタリングサイズプレスを使用して、澱粉、ポリビニルアルコールなどを予備塗工した原紙や、ピグメントと接着剤を含む塗工液を1層以上予備塗工した塗工原紙も使用可能である。この原紙の物性は浸透乾燥型インキをコールドセット型高速輪転機で印刷できる必要があり、一般の新聞用紙並みの引張強度、引裂強度、伸び等の物理的強度を有するものであればよい。 As the coated base paper, a base paper used for lightweight newsprint paper and a base paper used for lightweight fine coated paper are used for convenience, and those having a basis weight of about 30 to 47 g / m 2 are used. There is no particular limitation on the paper making method of the base paper, and long paper machine including top wire, round net machine, paperboard machine using both of them, Yankee dryer machine, etc., acid paper making, neutral paper making, Any of the base papers made by the alkaline paper making method may be used. Also, use a size press, bill blade, gate roll coater, or pre-metering size press to pre-coat one or more layers of base paper pre-coated with starch, polyvinyl alcohol, etc., or a coating solution containing pigment and adhesive. The coated coated paper can also be used. The physical properties of the base paper need to be able to print penetrating dry ink with a cold set type high-speed rotary press, and may have physical strength such as tensile strength, tear strength, and elongation equivalent to that of general newsprint.

原紙に、調整された塗工液を塗工する方法としては、ブレードコータ、バーコータ、ロールコータ、エアナイフコータ、リバースロールコータ、カーテンコータ、ブレードメタリングサイズプレスコータ、ロッドメタリングサイズプレスコータ、ゲートロールコータ等を用いて、一層もしくは二層以上を原紙上に片面づつもしくは両面同時に両面塗工する。塗工量は、片面当たり0.5g/m以上3.0g/m以下である。塗工量を片面0.5g/m未満とすると、印刷物のべたつきが低減するが、インキ着肉性および白色度、印刷光沢度が十分に得られない。一方、塗工量を片面3.0g/m以上にした場合、良好なインキ着肉性等が得られるが、印刷後のべたつきが大きくなり、印刷作業性に劣る。本発明で規定した塗工量を3g/m以下で塗工する場合、塗工機はゲートロールコーターなどのフィルム転写型ロールコーターを使用することにより、インキ着肉性が向上する。 The method of applying the adjusted coating solution to the base paper is as follows: blade coater, bar coater, roll coater, air knife coater, reverse roll coater, curtain coater, blade metering size press coater, rod metering size press coater, gate Using a roll coater or the like, one layer or two or more layers are coated on one side or both sides simultaneously on the base paper. The coating amount is 0.5 g / m 2 or more and 3.0 g / m 2 or less per side. When the coating amount is less than 0.5 g / m 2 on one side, the stickiness of the printed matter is reduced, but ink inking property, whiteness and printing gloss cannot be sufficiently obtained. On the other hand, when the coating amount is 3.0 g / m 2 or more on one side, good ink fillability and the like are obtained, but stickiness after printing becomes large and printing workability is poor. In the case where the coating amount specified in the present invention is 3 g / m 2 or less, the coating property is improved by using a film transfer type roll coater such as a gate roll coater.

湿潤塗工層を乾燥させる手法としては、例えば蒸気加熱シリンダー、加熱熱風エアドライヤー、ガスヒータードライヤー、電気ヒータードライヤー、赤外線ヒータードライヤー、高周波ヒータードライヤー等各種の方法が単独または併用して用いられる。   As a method for drying the wet coating layer, various methods such as a steam heating cylinder, a heated hot air air dryer, a gas heater dryer, an electric heater dryer, an infrared heater dryer, and a high frequency heater dryer are used alone or in combination.

以上のように塗工乾燥された微塗工紙は、マシンカレンダー、またはスーパーカレンダー、高温ソフトニップカレンダー等で平滑化処理を行ってもよいが、特に100kg/cm以下の軽度のカレンダー条件であることが好ましい。ただし、所望の品質の微塗工紙が得られれば、いずれのカレンダー処理、あるいは未カレンダー処理でもよい。微塗工紙の水分としては、印刷作業性、インキ着肉性の点から、1.0%以上9.0%以下が好ましく、また、本発明においては、微塗工紙の水分が5.0%以上でもベタつきがなく、印刷品質に優れるものである。   The finely coated paper coated and dried as described above may be smoothed by a machine calendar, a super calender, a high-temperature soft nip calender, or the like, and is in particular a mild calender condition of 100 kg / cm or less. It is preferable. However, any calendar processing or non-calendar processing may be performed as long as fine coated paper of desired quality is obtained. The water content of the finely coated paper is preferably 1.0% or more and 9.0% or less from the viewpoint of printing workability and ink inking property. In the present invention, the moisture of the finely coated paper is 5. Even at 0% or more, there is no stickiness and the print quality is excellent.

以下に実施例を挙げて、本発明を具体的に説明するが、勿論これらの例に限定されるものではない。尚、特に断らない限り、例中の部および%はそれぞれ重量%を示す。また、塗工液および得られたオフセット印刷用微塗工紙について以下に示すような評価法に基づいて試験を行った。
〈評価方法〉
(1)白色度:JIS P8148に準じて測定した。
(2)ベック平滑度:JIS P8119に準じて測定した。
(3)インキ着肉性:東芝機械(株)のオフセット輪転機(4色)を用いて、新聞印刷用オフセット印刷インキ(東洋インク(株)製 News
King)を用いて印刷速度600rpmで印刷し、得られた印刷物(藍単色ベタ印刷部)のインキ着肉性を4段階で目視評価した。◎:非常に優れる、○:優れる、△:やや問題あり、×:問題あり
(4)インキセット性:東芝機械(株)のオフセット輪転機(4色)を用いて、新聞印刷用オフセット印刷インキ(東洋インク(株)製 News
King)を用いて印刷速度600rpmで印刷した直後の印刷物(藍紅黄3色ベタ印刷部)をRI印刷機を用いて、上質紙にインキを転写し、上質紙の汚れの少ない具合を4段階で目視評価した。◎:非常に優れる、○:優れる、△:やや問題あり、×:問題あり
(5)印刷物の鮮明性:オフセット印刷において印刷物の鮮明性を10人のモニターにより、4段階で目視評価した。◎:非常に優れる、○:優れる、△:やや問題あり、×:問題あり
(6)べたつき性:オフセット印刷において印刷物のべたつきしない程度を10人のモニターにより、4段階で評価した。◎:非常に優れる、○:優れる、△:やや問題あり、×:問題あり

[実施例1]
粗粒重質炭酸カルシウム(ファイマテック社製FMT−90)100部からなる顔料に、分散剤として対顔料でポリアクリル酸ソーダ0.2部を添加して、セリエミキサーで分散し、固形分濃度が70%の顔料スラリーを調整した。このようにして得られた顔料スラリーに非増粘型のスチレンブタジエンラテックス(ガラス転移温度14℃)20部、ヒドロキシエチルエーテル化澱粉20部を接着剤として加え、さらに水を加えて固形分濃度24%の塗工液を得た。パルプとして晒しクラフトパルプ10%、メカニカルパルプ30%、脱墨パルプ60%を用い、内填填料としてロゼッタ型の軽質炭酸カルシウム(平均粒子径3.0μm)を原紙重量当たり15%含有する坪量39.0g/mの原紙に、片面あたりの塗工量が固形分で1.5g/mになるように、塗工液を1000m/分の塗工速度でゲートロールコーターにより両面塗工を行い乾燥し、ソフトニップカレンダによりベック平滑度が約60秒となるように平滑化処理を行い、塗工紙水分が8%の印刷用微塗工紙を得た。
[実施例2]
実施例1において、片面あたりの塗工量が、固形分で3.0g/mになるように変更した以外は実施例1と同様の方法で印刷用微塗工紙を得た。
[実施例3]
実施例1において、片面あたりの塗工量が、固形分で0.5g/mになるように変更した以外は実施例1と同様の方法で印刷用微塗工紙を得た。
[実施例4]
実施例1において、顔料の組成比を粗粒重質炭酸カルシウムを50部、大粒径カオリン(イメリス社製CapimCC)を50部とした以外は実施例1と同様の方法で印刷用微塗工紙を得た。
[実施例5]
実施例1において、塗工液の接着剤をポリビニルアルコール(クラレ社製PVA105)を20部、ヒドロキシエチルエーテル化澱粉を20部とした以外は実施例1と同様の方法で印刷用微塗工紙を得た。
[実施例6]
実施例1において内添填料としてロゼッタ型軽質炭酸カルシウムを5%、軽質炭酸カルシウム(ロゼッタ型)−シリカ複合物(平均粒径3.4μm、軽質炭酸カルシウム/シリカの固形分重量比=70/30)を10%含有するように変更した以外は実施例1と同様の方法で印刷用微塗工紙を得た。
[比較例1]
実施例1において、片面あたりの塗工量が、固形分で0.3g/mになるように変更した以外は実施例1と同様の方法で印刷用微塗工紙を得た。
[比較例2]
実施例1において、片面あたりの塗工量が、固形分で4.0g/mになるように変更した以外は実施例1と同様の方法で印刷用微塗工紙を得た。
[比較例3]
実施例1において、パルプとして晒しクラフトパルプ20%、メカニカルパルプ30%、脱墨パルプ50%に変更した以外は実施例1と同様の方法で印刷用塗工紙を得た。
[比較例4]
実施例1において、顔料の組成比を粗粒重質炭酸カルシウムを20部、大粒径カオリンを80部とした以外は実施例1と同様の方法で印刷用微塗工紙を得た。
[比較例5]
実施例1において、塗工液に顔料およびラテックスを配合せず、ヒドロキシエチルエーテル化澱粉を100部、固形分濃度を9%とした塗工液を得、塗工量を片面あたり0.5g/mとした以外は実施例1と同様の方法で印刷用微塗工紙を得た。
EXAMPLES The present invention will be specifically described below with reference to examples, but it is needless to say that the present invention is not limited to these examples. In addition, unless otherwise indicated, the part and% in an example show weight%, respectively. Further, the coating liquid and the obtained fine coated paper for offset printing were tested based on the evaluation method as described below.
<Evaluation methods>
(1) Whiteness: Measured according to JIS P8148.
(2) Beck smoothness: measured according to JIS P8119.
(3) Ink fillability: offset printing ink for newspaper printing (news from Toyo Ink Co., Ltd.) using an offset rotary press (4 colors) manufactured by Toshiba Machine Co., Ltd.
King) was printed at a printing speed of 600 rpm, and the ink landing property of the obtained printed matter (indigo single-color solid printing part) was visually evaluated in four stages. ◎: Excellent, ○: Excellent, △: Slightly problematic, X: Problemful (4) Ink setting property: Offset printing ink for newspaper printing using the offset rotary press (4 colors) of Toshiba Machine Co., Ltd. (Toyo Ink Co., Ltd. News
King) using a RI printer to transfer the ink immediately after printing at a printing speed of 600 rpm to a high-quality paper using an RI printing machine. Visual evaluation was performed. (Double-circle): Very excellent, (circle): Excellent, (triangle | delta): Some problem, x: There is a problem. (5) Sharpness of printed matter: In offset printing, the clearness of printed matter was visually evaluated in four steps with 10 monitors. (Double-circle): Very excellent, (circle): Excellent, (triangle | delta): Some problem, x: There is a problem (6) Stickiness: The degree which the printed matter does not become sticky in offset printing was evaluated in four steps by 10 monitors. ◎: Very good, ○: Excellent, △: Somewhat problematic, ×: There is a problem

[Example 1]
To a pigment consisting of 100 parts of coarse-grained heavy calcium carbonate (Fmatec FMT-90), 0.2 part of sodium polyacrylate as a dispersant is added as a dispersant, dispersed with a serie mixer, and solid content concentration A 70% pigment slurry was prepared. 20 parts of non-thickening type styrene butadiene latex (glass transition temperature 14 ° C.) and 20 parts of hydroxyethyl etherified starch are added as an adhesive to the pigment slurry thus obtained, and water is added to obtain a solid content concentration of 24. % Coating solution was obtained. Basis weight 39 containing 10% kraft pulp, 30% mechanical pulp, 60% deinked pulp and 15% rosetta-type light calcium carbonate (average particle size: 3.0 μm) as the inner filler per base paper weight the base paper .0g / m 2, as the coating amount per one side is 1.5 g / m 2 on a solids, both sides coated by a gate roll coater a coating liquid at a coating speed of 1000 m / min Then, it was dried and smoothed by a soft nip calender so that the Beck smoothness was about 60 seconds to obtain a finely coated paper for printing having a water content of 8%.
[Example 2]
In Example 1, a fine coated paper for printing was obtained in the same manner as in Example 1 except that the coating amount per side was changed to 3.0 g / m 2 in terms of solid content.
[Example 3]
In Example 1, a finely coated paper for printing was obtained in the same manner as in Example 1 except that the coating amount per side was changed to 0.5 g / m 2 in terms of solid content.
[Example 4]
In Example 1, the fine coating for printing was carried out in the same manner as in Example 1 except that the composition ratio of the pigment was 50 parts of coarse heavy calcium carbonate and 50 parts of large particle size kaolin (CapimCC manufactured by Imeris). I got paper.
[Example 5]
A fine coated paper for printing in the same manner as in Example 1 except that 20 parts of polyvinyl alcohol (PVA105 manufactured by Kuraray Co., Ltd.) and 20 parts of hydroxyethyl etherified starch were used as the adhesive of the coating liquid. Got.
[Example 6]
In Example 1, 5% Rosetta-type light calcium carbonate as an internal filler, light calcium carbonate (Rosetta-type) -silica composite (average particle size 3.4 μm, light calcium carbonate / silica solid content weight ratio = 70/30 A finely coated paper for printing was obtained in the same manner as in Example 1, except that the content was changed to 10%.
[Comparative Example 1]
In Example 1, a fine coated paper for printing was obtained in the same manner as in Example 1 except that the coating amount per side was changed to 0.3 g / m 2 in terms of solid content.
[Comparative Example 2]
In Example 1, a fine coated paper for printing was obtained in the same manner as in Example 1 except that the coating amount per side was changed to 4.0 g / m 2 in terms of solid content.
[Comparative Example 3]
In Example 1, a coated paper for printing was obtained in the same manner as in Example 1 except that it was exposed to pulp and changed to 20% kraft pulp, 30% mechanical pulp, and 50% deinked pulp.
[Comparative Example 4]
In Example 1, a fine coated paper for printing was obtained in the same manner as in Example 1 except that the composition ratio of the pigment was 20 parts coarse calcium carbonate and 80 parts large particle size kaolin.
[Comparative Example 5]
In Example 1, a coating liquid with 100 parts of hydroxyethyl etherified starch and a solid content concentration of 9% was obtained without blending pigment and latex in the coating liquid, and the coating amount was 0.5 g / side. A fine coated paper for printing was obtained in the same manner as in Example 1 except that m 2 was used.

以上の結果を表1に示した。 The above results are shown in Table 1.



Claims (5)

原紙上に顔料および接着剤を含有する塗工層を設けてなる塗工紙において、脱墨パルプ(故紙パルプ)を原紙重量当たり60重量%以上、及び炭酸カルシウムを含有する填料を原紙重量当たり5〜30重量%含有し、塗工量が片面当たり0.5g/m以上3.0g/m以下の塗工層を有し、塗工層中に炭酸カルシウムを顔料100重量部当たり50重量部以上含有し、塗工紙の坪量が48g/m2以下であることを特徴とする印刷用微塗工紙。 In coated paper in which a coating layer containing a pigment and an adhesive is provided on the base paper, the deinked pulp (spent paper pulp) is 60% by weight or more per base paper weight, and the filler containing calcium carbonate is 5 per base paper weight. -30% by weight, coating amount of 0.5 g / m 2 or more and 3.0 g / m 2 or less per side, and calcium carbonate in the coating layer at 50 parts by weight per 100 parts by weight of pigment A finely coated paper for printing, comprising at least a part and a basis weight of the coated paper of 48 g / m 2 or less. 原紙中に填料として、炭酸カルシウム−シリカ複合物を含有することを特徴とする請求項1に記載の印刷用微塗工紙。 2. The finely coated paper for printing according to claim 1, wherein the base paper contains a calcium carbonate-silica composite as a filler. 顔料100重量部に対して、接着剤を30〜80重量部含有することを特徴とする請求項1または2に記載の印刷用微塗工紙。 The finely coated paper for printing according to claim 1 or 2, wherein the adhesive is contained in an amount of 30 to 80 parts by weight with respect to 100 parts by weight of the pigment. 接着剤として、澱粉/(ポリビニルアルコールまたはラテックス)の配合比が5/35〜35/5であることを特徴とする請求項1〜3のいずれかに記載の印刷用微塗工紙。 The fine coated paper for printing according to any one of claims 1 to 3, wherein a compounding ratio of starch / (polyvinyl alcohol or latex) is 5/35 to 35/5 as an adhesive. 浸透乾燥型インキを用いてコールドオフセット輪転機で印刷されることを特徴とする請求項1〜4のいずれかに記載の新聞印刷用微塗工紙。 The fine coated paper for newspaper printing according to any one of claims 1 to 4, wherein the finely coated paper is printed on a cold offset rotary press using an osmotic drying ink.
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JP2008007895A (en) * 2006-06-30 2008-01-17 Daio Paper Corp Newsprint paper
JP2009138319A (en) * 2007-12-06 2009-06-25 Marusumi Paper Co Ltd Coating newsprint paper for offset printing
JP2009179892A (en) * 2008-01-29 2009-08-13 Nippon Paper Industries Co Ltd Neutral cold offset printing paper
JP2009263855A (en) * 2008-03-31 2009-11-12 Nippon Paper Industries Co Ltd Coated paper for offset printing
JP2010013785A (en) * 2008-07-07 2010-01-21 Marusumi Paper Co Ltd Coated newsprint for offset printing
JP2011102442A (en) * 2009-11-10 2011-05-26 Daio Paper Corp Coated paper
CN103184709A (en) * 2011-12-28 2013-07-03 康吉诺(北京)科技有限公司 Manufacturing method for environment-friendly carbonless copy base paper
CN103184708A (en) * 2011-12-28 2013-07-03 康吉诺(北京)科技有限公司 Method for manufacturing environmental-friendly coated base paper and environmental-friendly coated paper
JP2013234397A (en) * 2012-05-07 2013-11-21 Daio Paper Corp Coated paper
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JPWO2019039364A1 (en) * 2017-08-25 2020-03-26 日本製紙株式会社 Offset printing paper for cold set
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JP4502979B2 (en) * 2006-06-30 2010-07-14 大王製紙株式会社 Newspaper
JP2008007895A (en) * 2006-06-30 2008-01-17 Daio Paper Corp Newsprint paper
JP2009138319A (en) * 2007-12-06 2009-06-25 Marusumi Paper Co Ltd Coating newsprint paper for offset printing
JP2009179892A (en) * 2008-01-29 2009-08-13 Nippon Paper Industries Co Ltd Neutral cold offset printing paper
JP2009263855A (en) * 2008-03-31 2009-11-12 Nippon Paper Industries Co Ltd Coated paper for offset printing
JP2010013785A (en) * 2008-07-07 2010-01-21 Marusumi Paper Co Ltd Coated newsprint for offset printing
JP2014012924A (en) * 2009-06-26 2014-01-23 Nippon Paper Industries Co Ltd Printing paper
JP2011102442A (en) * 2009-11-10 2011-05-26 Daio Paper Corp Coated paper
CN103459722A (en) * 2011-03-29 2013-12-18 日本制纸株式会社 Coated paper for printing and method for manufacturing same
CN103184708A (en) * 2011-12-28 2013-07-03 康吉诺(北京)科技有限公司 Method for manufacturing environmental-friendly coated base paper and environmental-friendly coated paper
CN103184709A (en) * 2011-12-28 2013-07-03 康吉诺(北京)科技有限公司 Manufacturing method for environment-friendly carbonless copy base paper
CN103184708B (en) * 2011-12-28 2016-04-06 康吉诺(北京)科技有限公司 A kind of manufacture method of environmental protection art base paper and environmental protection art paper
JP2013234397A (en) * 2012-05-07 2013-11-21 Daio Paper Corp Coated paper
JPWO2019039364A1 (en) * 2017-08-25 2020-03-26 日本製紙株式会社 Offset printing paper for cold set
JP2020200564A (en) * 2019-06-13 2020-12-17 三菱製紙株式会社 Coated paper for printing
JP7042772B2 (en) 2019-06-13 2022-03-28 三菱製紙株式会社 Coated paper for printing

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