JPH07119083A - Pigment-coated paper and its production - Google Patents
Pigment-coated paper and its productionInfo
- Publication number
- JPH07119083A JPH07119083A JP17781693A JP17781693A JPH07119083A JP H07119083 A JPH07119083 A JP H07119083A JP 17781693 A JP17781693 A JP 17781693A JP 17781693 A JP17781693 A JP 17781693A JP H07119083 A JPH07119083 A JP H07119083A
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- coating
- coating layer
- pigment
- coated
- paper
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、塗布ムラ及び印刷ムラ
のない顔料塗被紙及びその製造方法に関し、特に、カー
テン塗布装置により得られる顔料塗被紙及びその製造方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pigment-coated paper without coating unevenness and printing unevenness and a method for producing the same, and more particularly to a pigment-coated paper obtained by a curtain coating apparatus and a method for producing the same.
【０００２】[0002]
【従来の技術】従来より、顔料塗被紙は、非塗工の上質
紙と比較して平滑性に優れ、インキの吸収性が均一であ
るため、印刷用紙として広く用いられている。特に、近
年、印刷物の視覚化が進み、多色印刷が施されるカラー
印刷の比率が高まり、顔料塗被紙に対する要求も高いも
のとなっている。2. Description of the Related Art Conventionally, pigment-coated paper has been widely used as a printing paper because it is superior in smoothness to non-coated high-quality paper and has uniform ink absorption. In particular, in recent years, the visualization of printed matter has advanced, the ratio of color printing in which multicolor printing is performed has increased, and the demand for pigment-coated paper has also increased.
【０００３】顔料塗被紙に対する要求品質は数多くある
が、塗層の厚み及び密度が均一で塗布ムラが発生しない
こと、塗布欠陥が発生しないことが重要である。Although there are many required qualities for pigment-coated paper, it is important that the thickness and density of the coating layer are uniform so that coating unevenness and coating defects do not occur.
【０００４】塗層の厚み及び密度は、塗層に受理された
印刷インキ或は湿し水の浸透量に影響を及ぼす。つま
り、塗層の厚みが不均一である場合には、インキの塗層
表面における受理量が均一である場合でも、相対的に塗
層の厚みが薄い部分では、印刷インキを塗層で吸収し得
る容量が少ないため、原紙層までインキが浸透し、塗層
表面のインキの量が相対的に低下して濃度ムラを生じた
り、裏面に表面の画像が透ける「裏写り」と呼ばれる障
害が発生したりする。塗層の密度が不均一である場合、
密度が高い部分で、浸透速度が遅くなるため、表面にお
ける印刷インキ或は湿し水の存在量は相対的に多くな
る。特に、印刷インキの表面存在量が多い場合には、相
対的にインキ濃度が高くなり、濃度ムラの原因となった
り、又、印刷インキの固化が不十分な場合には、バック
トラップモトルを生じる。湿し水の表面存在量が多い場
合には、次に転写すべき印刷インキの転写量が抑制され
るため、濃度ムラを生じる。従って、塗層の厚み及び密
度は、印刷品質を考慮した場合、均一であり、塗布ムラ
が発生しないことが望ましい。The thickness and density of the coating layer affect the amount of penetration of the printing ink or fountain solution received in the coating layer. In other words, if the thickness of the coating layer is non-uniform, even if the amount of ink received on the surface of the coating layer is uniform, the printing ink is absorbed by the coating layer in the area where the coating layer is relatively thin. Since the amount of ink that can be obtained is small, the ink penetrates into the base paper layer, the amount of ink on the surface of the coating layer decreases relatively, causing uneven density, and a problem called "show-through" in which the image on the front surface can be seen through To do If the density of the coating is uneven,
In the high density area, the permeation speed becomes slow, so that the amount of printing ink or fountain solution present on the surface becomes relatively large. In particular, when there is a large amount of printing ink on the surface, the ink density becomes relatively high, which causes density unevenness, and when solidification of the printing ink is insufficient, back trap mottle occurs. . When the amount of dampening water present on the surface is large, the transfer amount of the printing ink to be transferred next is suppressed, resulting in uneven density. Therefore, it is desirable that the thickness and density of the coating layer be uniform in consideration of printing quality and that coating unevenness does not occur.
【０００５】かかるような品質要求を満たす手段とし
て、原紙に多層塗布を塗布する方法がある。つまり、原
紙層の地合に起因する表面凹凸が存在する原紙上に、単
層の塗層を塗布した場合、塗層表面において高い平滑性
を得ることと、塗層の厚み或は密度において高い均一性
を得ることの２つの条件を同時に満たすことは極めて困
難である。従って、多層塗布を行うことにより、最上層
となる第２塗布層（以下、第２塗布層と略す。）が塗布
される第１塗布層で、原紙或は下塗層塗設基材表面の平
滑性を改善し、第２塗布層において、高い平滑性、均一
な厚み及び密度を達成することができる。As a means for satisfying such quality requirements, there is a method of applying a multi-layer coating on a base paper. In other words, when a single coating layer is applied on a base paper that has surface irregularities due to the texture of the base paper layer, high smoothness is obtained on the surface of the coating layer and the thickness or density of the coating layer is high. It is extremely difficult to simultaneously satisfy the two conditions for obtaining uniformity. Therefore, the second coating layer (hereinafter abbreviated as the second coating layer), which is the uppermost layer, is applied by performing the multi-layer coating, and is the first coating layer. It is possible to improve smoothness and achieve high smoothness, uniform thickness and density in the second coating layer.
【０００６】第２塗布層の塗布を行う塗布方式は多岐に
わたるが、具体的には、ブレード塗布方式、エアナイフ
塗布方式、ロール塗布方式等を挙げることができる。こ
れらの塗布方式の共通した特徴としては、比較的に簡単
な操作で、顔料及び接着剤を主成分とする塗布液の塗布
が行えることである。しかしながら、これらの塗布方式
では、それぞれの塗布方式に固有の塗布欠陥の発生が避
けられず、高品質な顔料塗被紙を得ることができなかっ
た。There are various coating methods for coating the second coating layer, and specific examples thereof include a blade coating method, an air knife coating method and a roll coating method. A common feature of these coating methods is that the coating liquid containing a pigment and an adhesive as a main component can be coated by a relatively simple operation. However, with these coating methods, the occurrence of coating defects peculiar to each coating method cannot be avoided, and high-quality pigment-coated paper cannot be obtained.
【０００７】即ち、ブレード塗布方式は、過剰に塗布液
を塗設する原紙に供給した後、余剰の液をブレードによ
り掻き落とす後計量型の塗布方式である。ブレード塗布
方式において、不可避の塗布欠陥はストリーク及びスク
ラッチであるが、原紙或は下塗層塗設基材に第１塗布層
を設けた塗被紙（以下、第１塗布層塗設基材と略す。）
にブレード塗布を行う場合、かかる塗布欠陥の原因とな
る異物の排除が困難で、欠陥発生は顕著なものとなる。
ストリークやスクラッチの発生した部位では、極めて不
均一となるため、印刷面に重大な欠陥として現れる。
又、ストリークやスクラッチは、オンラインの欠点検出
機や仕上げ工程で選別・除去することも可能であるが、
欠陥部を含めて前後の余白が全てブロークとなり、除去
に要する時間やコスト面からも発生を未然に防ぐべき欠
陥である。That is, the blade coating method is a post-measurement type coating method in which an excessive amount of the coating liquid is supplied to the base paper to be coated and then the excess liquid is scraped off by a blade. In the blade coating method, the unavoidable coating defects are streaks and scratches, but coated paper in which a first coating layer is provided on a base paper or a base coating layer coating base material (hereinafter referred to as a first coating layer coating base material). (Omitted)
When blade coating is performed, it is difficult to remove the foreign matter that causes the coating defect, and the defect generation becomes remarkable.
The areas where streaks and scratches are formed are extremely uneven and appear as serious defects on the printing surface.
In addition, streaks and scratches can be sorted and removed by an online defect detector or finishing process.
This is a defect that should be prevented in advance from the viewpoint of the time and cost required for removal, because the blank spaces before and after the defect area are all broked.
【０００８】又、かかる塗布方式では、余剰な液の供給
から計量までの間に、第１塗布層塗設基材に塗布液中の
水或は接着剤成分が必要以上に浸入し、計量時のブレー
ド直下で塗布液に高い圧力が加えられるため、塗布液中
の水或は接着剤成分の第１塗布層塗設基材への浸入は、
更に顕著に進行する。このため、第２塗布層で、相対的
に接着剤成分が少なくなるため、塗層強度が低くなる。
又、余剰分として掻き落とされた液は、供給前の液の組
成と異なり、時間の経過と共に塗布液の組成が変化し、
安定した品質の製品を得ることができない。Further, in such a coating method, water or an adhesive component in the coating liquid is excessively infiltrated into the base material coated with the first coating layer during the period from the supply of the excess liquid to the measurement, and during the measurement. Since a high pressure is applied to the coating liquid just below the blade of, the infiltration of water or the adhesive component in the coating liquid into the first coating layer coated base material is
It progresses significantly more. For this reason, since the adhesive component in the second coating layer is relatively small, the coating layer strength is low.
Further, the liquid scraped off as an excess differs from the composition of the liquid before the supply, and the composition of the coating liquid changes with the passage of time,
It is not possible to obtain stable quality products.
【０００９】エアナイフ塗布方式は、過剰に塗布液を第
１塗布層塗設基材に供給した後、余剰の液を風圧により
掻き落とす後計量型の塗布方式である。かかる塗布方式
は、エアジェットに圧力分布ムラが発生することが避け
られず、エアナイフパターンと称される塗布層の厚みが
不均一な塗布ムラを発生し易い。又、かかる塗布方法で
は、塗布速度を高速度化する場合、或は液濃度を高濃度
化する場合には、風圧を高くする必要があるが、風圧を
大きくすると、かかるエアナイフパターンの発生が、更
に顕著になるばかりでなく、エアジェットの流れの乱れ
が大きくなり、吹き出しによる騒音も著しいものとな
る。従って、風圧を徒らに大きくすることができないの
で、比較的に高粘度の液を高速で塗布することが要求さ
れる顔料塗被紙の製造には適さない。The air knife coating method is a post-measurement type coating method in which after excessively supplying the coating liquid to the base material for coating the first coating layer, the excess liquid is scraped off by wind pressure. Such a coating method inevitably causes uneven pressure distribution in the air jet, and easily causes uneven coating called an air knife pattern in which the thickness of the coating layer is uneven. Further, in such a coating method, when the coating speed is increased or the liquid concentration is increased, it is necessary to increase the air pressure. However, when the air pressure is increased, the air knife pattern is generated. Not only becomes more prominent, but also the turbulence of the air jet flow becomes larger, and the noise caused by blowing out becomes noticeable. Therefore, since the wind pressure cannot be increased unnecessarily, it is not suitable for the production of pigment-coated paper which requires a relatively high-viscosity liquid to be applied at high speed.
【００１０】ロール塗布方式は、ロールの組み合わせ等
により様々な形式のものが存在するが、基本的には、複
数ロールを組み合わせてロール間での塗布液の転写によ
り液を計量し、第１塗布層塗設基材に転写する塗布方法
が一般的である。かかる塗布方式は、ロール特有の規則
的な間隔を持つ線状のパターンを有する塗布ムラが発生
し易く、又、塗布ロール面と第１塗布層塗設基材の転写
後の剥離の際に、第２塗布層の厚みも不均一となるスプ
リットパターンと称される塗布ムラが発生し易く、近年
の印刷用紙に対する要求品質を満たすことは難しい。There are various types of roll coating methods depending on the combination of rolls and the like. Basically, a plurality of rolls are combined and the coating liquid is transferred between the rolls to measure the liquid, and the first coating is performed. A coating method of transferring to a layer-coated substrate is general. This coating method is liable to cause coating unevenness having a linear pattern having a regular interval peculiar to the roll, and when peeling after the transfer of the coating roll surface and the first coating layer coating base material, Coating unevenness called a split pattern in which the thickness of the second coating layer is also non-uniform is likely to occur, and it is difficult to satisfy the quality requirements for recent printing paper.
【００１１】カーテン塗布方式は、ブレード、エアナイ
フ及びロール塗布方式における固有の問題を解決する塗
布方式である。しかし、カーテン塗布方式では、第１塗
布層の表面形状が塗布性に重大な影響を及ぼす。つま
り、第１塗布層の表面の形状に関して、深さの深い、平
面に対する傾斜が鋭い窪み（以下、ピットと称す。）が
存在すると、カーテン膜と第１塗布層が接触する領域
（以下、塗布線領域と称す。）で、かかるピットに液が
押し込まれず、空気の残留が起こる。かかる場合には、
塗布層の乾燥時に空気の膨張が起こり、塗布層にブリス
ター上の厚みの薄い塗布層の膨らみ（以下、ブリスター
と略す。）を発生したり、塗布層が破壊され、クレータ
ー状の未塗布部（以下、クレーターと略す。）の形成が
起こり、結果として印刷ムラが起こり、高品質な塗被紙
を得ることが不可能となる。The curtain coating method is a coating method which solves the problems inherent in the blade, air knife and roll coating methods. However, in the curtain coating method, the surface shape of the first coating layer seriously affects the coating property. That is, regarding the shape of the surface of the first coating layer, if there is a dent (hereinafter, referred to as a pit) having a deep depth and a sharp inclination with respect to the plane, a region where the curtain film and the first coating layer are in contact (hereinafter, coating) In the line area), the liquid is not pushed into such a pit and air remains. In such cases,
When the coating layer is dried, air swells to cause swelling of the thin coating layer on the blister (hereinafter referred to as blister) in the coating layer, or the coating layer is destroyed, resulting in a crater-shaped uncoated portion ( Hereinafter, abbreviated as crater) occurs, resulting in uneven printing, and it becomes impossible to obtain a high-quality coated paper.
【００１２】[0012]
【発明が解決しようとする課題】本発明の目的は、後計
量型の塗布方式であるブレード塗布方式、エアナイフ塗
布方式、ロール塗布方式では得ることが難しかった塗布
層の厚み及び密度が均一で塗布ムラ及び印刷ムラの発生
がない顔料塗被紙を得ることである。SUMMARY OF THE INVENTION An object of the present invention is to apply a coating layer having a uniform thickness and density, which was difficult to obtain by a post-weighing type coating method such as a blade coating method, an air knife coating method and a roll coating method. It is to obtain a pigment-coated paper that does not cause unevenness or printing unevenness.
【００１３】[0013]
【課題を解決するための手段】本発明の顔料塗被紙は、
原紙の片面に少なくとも２層以上の塗布層を設けた顔料
塗被紙において、原紙或は下塗層塗設基材上に、ＪＩＳ
Ｂ０６０１に規定される１０点平均粗さＲｚが１３μ
ｍ以下の第１塗布層を設け、該第１塗布層表面に、カー
テン塗布装置を用いて第２塗布層を設けることにより、
塗布層の厚み及び密度が均一で塗布ムラ及び印刷ムラの
発生がない顔料塗被紙を得ることができることを見いだ
したものである。又、その製造方法である。The pigment coated paper of the present invention comprises:
In a pigment-coated paper in which at least two or more coating layers are provided on one side of the base paper, JIS or JIS
10-point average roughness Rz specified in B0601 is 13μ
By providing a first coating layer of m or less and providing a second coating layer on the surface of the first coating layer using a curtain coating device,
It has been found that a pigment-coated paper can be obtained in which the thickness and density of the coating layer are uniform, and coating unevenness and printing unevenness do not occur. It is also a manufacturing method thereof.
【００１４】ブリスターやクレーターの発生原因は、第
１塗布層とカーテン塗布により形成される第２塗布層の
間に空気層が存在することである。カーテン塗布方式で
は、塗布線領域において第２塗布層が第１塗布層に押し
込まれる圧力、つまり、流体力学的な圧力が、後計量型
の塗布方式における計量部と比較して低い。このため、
第２塗布層の塗布液の第１塗布層への浸透は、キャピラ
リ浸透が支配的に進行するが、ピットの開口径が小さ
く、深さが深い場合には、ピット内部全体に塗布液が充
填されるより早く塗布層の乾燥が進行し、塗布液が不動
化する。従って、ピットの内部に空気が残留し、ブリス
ターやクレーターの発生を見ることになる。The cause of occurrence of blisters and craters is the presence of an air layer between the first coating layer and the second coating layer formed by curtain coating. In the curtain coating method, the pressure at which the second coating layer is pressed into the first coating layer in the coating line region, that is, the hydrodynamic pressure is lower than that in the measuring unit in the post-metering type coating method. For this reason,
Permeation of the coating liquid of the second coating layer into the first coating layer proceeds predominantly by capillaries, but when the opening diameter of the pit is small and the depth is deep, the coating liquid fills the entire inside of the pit. Drying of the coating layer progresses faster than the above, and the coating liquid becomes immobile. Therefore, air remains inside the pit, and the occurrence of blisters and craters can be seen.
【００１５】ここで、ピットの形状を測定する方法とし
ては、光学顕微鏡を用いる方法、走査型電子顕微鏡を用
いる方法、レーザー変位計を用いる方法、触針式表面粗
さ計を用いる方法等が挙げられる。しかし、顕微鏡を用
いる方法は、深さ方向の定量を行うことが難しい。レー
ザー変位計を用いる方法では、レーザー光の照射角度に
よってはピット内底部が死角となる場合が多く、正確な
測定を行うことができない。これらに対して、触針式の
表面粗さ計は、ピットの深さ方向の情報も正確に得られ
る表面形状測定装置である。Here, examples of the method for measuring the shape of the pits include a method using an optical microscope, a method using a scanning electron microscope, a method using a laser displacement meter, and a method using a stylus type surface roughness meter. To be However, it is difficult for the method using a microscope to perform quantification in the depth direction. In the method using a laser displacement meter, the inner bottom of the pit often becomes a blind spot depending on the irradiation angle of the laser beam, and accurate measurement cannot be performed. On the other hand, the stylus type surface roughness meter is a surface shape measuring device that can accurately obtain information in the pit depth direction.
【００１６】本発明では、触針式表面粗さ計で測定可能
な表面粗さ状態を示すパラメータとして、ＪＩＳ Ｂ０
６０１に規定される１０点平均粗さＲｚ（以下、Ｒｚと
略す。）を採用した。本発明におけるＲｚとは、第１塗
布層表面の粗さプロファイルより、算出されるものであ
り、粗さプロファイルに相当する断面曲線から基準長さ
を抜き取った部分の平均線に対し、最高から５番目まで
の山頂の標高の平均値と最深から５番目までの谷底の標
高の平均値との差の値である。In the present invention, JIS B0 is used as a parameter indicating a surface roughness state that can be measured by a stylus surface roughness meter.
A 10-point average roughness Rz (hereinafter abbreviated as Rz) defined in 601 was adopted. The Rz in the present invention is calculated from the roughness profile of the surface of the first coating layer, and from the maximum to 5 with respect to the average line of the portion obtained by extracting the reference length from the sectional curve corresponding to the roughness profile. It is the value of the difference between the average value of the altitudes of the peaks up to the th and the average value of the altitudes of the valley bottoms from the deepest to the fifth.
【００１７】つまり、カーテン塗布される第１塗布層の
Ｒｚは、中心線平均粗さとは異なり、特にピットのよう
に勾配の鋭く、深い谷や高い山が基準長さの範囲内で比
較的低頻度で存在する場合、かかる山や谷の寄与が強調
して評価される表面粗さパラメータである。本発明者ら
は、Ｒｚとブリスターやクレーター発生程度に関して重
ねて検討を行ったところ、Ｒｚを用いることにより、ブ
リスターやクレーターの発生に重大な影響を及ぼすピッ
トの発生程度を定量化することができることを見いだし
た。That is, Rz of the first coating layer subjected to curtain coating is different from the center line average roughness, and in particular, a steep slope such as a pit, deep valleys and high peaks are relatively low within the range of the reference length. When present at a frequency, it is a surface roughness parameter evaluated by emphasizing the contribution of such peaks and valleys. The inventors of the present invention have made repeated studies on Rz and the degree of occurrence of blisters and craters. By using Rz, it is possible to quantify the degree of pit occurrence that has a significant effect on the occurrence of blisters and craters. I found it.
【００１８】本発明における具体的なＲｚの測定は、基
準長さ２．５ｍｍとして行った。かかる測定を試料の任
意の方向に最低１７回以上行い、得られたＲｚ値の平均
値を本発明におけるＲｚ値とした。The specific measurement of Rz in the present invention was carried out with a standard length of 2.5 mm. Such measurement was performed at least 17 times in any direction of the sample, and the average value of the obtained Rz values was defined as the Rz value in the present invention.
【００１９】本発明においては、上記の如く、顔料及び
接着剤を主成分とした塗布液をカーテン塗布装置を用い
て塗布することを特徴としているが、第２塗布層が塗布
される第１塗布層表面の１０点平均粗さを１３μｍ以下
とし、第２塗布層をカーテン塗布装置を用いて塗布する
ことにより、塗布層の厚み及び密度が均一で塗布ムラ及
び塗布欠陥の発生がない顔料塗被紙を得る方法を開示し
たものは、未だ見当たらない。As described above, the present invention is characterized in that the coating liquid containing the pigment and the adhesive as the main components is applied using the curtain coating device. However, the first coating for applying the second coating layer is performed. The 10-point average roughness of the layer surface is 13 μm or less, and the second coating layer is coated by using a curtain coating device, so that the thickness and density of the coating layer are uniform, and coating unevenness and coating defects do not occur. No disclosure of a method for obtaining paper is found yet.
【００２０】以下、添付図面に基づき、本発明の実施態
様について詳細に説明する。図１は、本発明の実施態様
を示した顔料塗被紙の第２塗布層塗布用の塗布装置の概
略図である。予め調製された塗布液は、塗布液貯蔵タン
ク１１より、給液ポンプ１２によってコーターヘッド１
へ送られる。この際、塗布液の送液量は、最終製品の塗
布量と比例関係にあるため、コーターヘッド１への塗布
液の送液量コントロールは、精度よく行う必要がある。
それ故に、給液ポンプ１２としては可変流量型の無脈動
定流量ポンプが適当である。Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic view of a coating device for coating a second coating layer on a pigment-coated paper showing an embodiment of the present invention. The coating liquid prepared in advance is supplied from the coating liquid storage tank 11 by the liquid supply pump 12 to the coater head 1.
Sent to. At this time, since the delivery amount of the coating liquid is proportional to the application amount of the final product, it is necessary to accurately control the delivery amount of the coating liquid to the coater head 1.
Therefore, as the liquid supply pump 12, a variable flow type non-pulsating constant flow pump is suitable.
【００２１】コーターヘッド１の内部は、マニホールド
６、スリット２からなり、それぞれ高精度の仕上げが施
されている。供給された塗布液はマニホールド６に満た
され、更にスリット２に送られるときに通過する狭い間
隙において、給液ポンプ１２の送液による動圧の影響が
軽減され、幅方向における圧力分布が均一化され、リッ
プ３より流出し、垂直なカーテン膜４を形成する。The interior of the coater head 1 is composed of a manifold 6 and slits 2, each of which is finished with high precision. The supplied coating liquid is filled in the manifold 6, and the influence of the dynamic pressure due to the liquid supply of the liquid supply pump 12 is reduced in the narrow gap that passes through when it is sent to the slit 2, and the pressure distribution in the width direction is made uniform. Then, it flows out from the lip 3 and forms a vertical curtain film 4.
【００２２】幅方向でプロファイルが均一となった垂直
カーテン膜４は、連続走行している第１塗布層塗設基材
５と接触し、第１塗布層塗設基材５に塗布される。ここ
で、エッジガイド１０ａ、１０ｂは、コーターヘッド１
の幅を超えず、更に、第１塗布層塗設基材５の幅を超え
て設けられ、垂直カーテン膜は第１塗布層塗設基材５の
幅を超えて形成される。垂直カーテン膜４が第１塗布層
塗設基材５の幅を超えて形成されているのは、垂直カー
テン膜４の両端部における塗層の厚塗りを防止するため
である。第１塗布層塗設基材５の幅を超えて流下する塗
布液は、受液槽９に回収され、塗布液貯蔵タンク１１に
戻された後、再び塗布される。又、第１塗布層塗設基材
５が切断した時等塗布が中断された場合も、塗布液は受
液槽９に回収される。The vertical curtain film 4 having a uniform profile in the width direction comes into contact with the continuously-applied first coating layer-coated substrate 5 and is applied to the first coating layer-coated substrate 5. Here, the edge guides 10a and 10b are used for the coater head 1.
The width of the vertical curtain film does not exceed the width of the first coating layer-coated substrate 5, and the vertical curtain film is formed to exceed the width of the first coating layer-coated substrate 5. The vertical curtain film 4 is formed so as to exceed the width of the first coating layer-coated substrate 5 in order to prevent thick coating of the coating layer on both ends of the vertical curtain film 4. The coating liquid flowing down beyond the width of the first coating layer-coated substrate 5 is collected in the liquid receiving tank 9, returned to the coating liquid storage tank 11, and then coated again. Further, even when the coating is interrupted, such as when the first coating layer-coated substrate 5 is cut, the coating liquid is collected in the liquid receiving tank 9.
【００２３】連続走行している第１塗布層塗設基材５と
垂直カーテン膜４との塗布線領域には、第１塗布層塗設
基材５に同伴する空気流を可能な限り遮蔽し、カーテン
周辺の空気の回流等で垂直カーテン膜４が乱れることな
く第１塗布層塗設基材５に達するようにするため、遮風
板８が設けられている。又、第１塗布層塗設基材５の搬
送方向は、塗布線領域の直前でロール７により方向転換
することにより、第１塗布層塗設基材５に同伴する空気
の塗布線領域への影響を最小限にとどめるように構成さ
れている。In the coating line region of the first coating layer-coated substrate 5 and the vertical curtain film 4 which are continuously running, the air flow entrained in the first coating layer-coated substrate 5 is shielded as much as possible. A wind shield plate 8 is provided so that the vertical curtain film 4 can reach the first coating layer-coated substrate 5 without being disturbed by the circulation of air around the curtain. Further, the transport direction of the first coating layer-coated base material 5 is changed by the roll 7 immediately before the coating line region, so that the air entrained in the first coating layer-coating substrate 5 moves to the coating line region. It is designed to minimize the impact.
【００２４】形成させた垂直カーテン膜４を安定した状
態で塗布するためには、第１塗布層塗設基材５からコー
ターヘッド１下部の流出部までの高さがある程度必要と
されるが、本実施態様においてはその高さを制御するこ
とも可能であり、垂直カーテン膜４の安定に適した高さ
は６０〜３００ｍｍ、好ましくは１００〜２５０ｍｍ、
更に好ましくは１２０〜１８０ｍｍである。In order to apply the formed vertical curtain film 4 in a stable state, a certain height is required from the first coating layer-coated substrate 5 to the outflow portion under the coater head 1. In this embodiment, the height can be controlled, and the height suitable for stabilizing the vertical curtain film 4 is 60 to 300 mm, preferably 100 to 250 mm,
More preferably, it is 120 to 180 mm.
【００２５】本発明は、以上の実施態様に限定されるこ
となく、様々な変形が可能であることは言うまでもな
い。前述した実施態様において、形成したカーテン膜の
幅は第１塗布層塗設基材５の幅より大としたが、これは
塗布層両端部における塗布量の増加を防止するためであ
って、このような塗布量増加が小であるか、もしくはあ
まり問題とされない場合、又は特公昭４９−１４１３０
号公報等に開示される方法、その他塗布量増加防止方法
を採用することにより解消しうる場合には、垂直カーテ
ン膜を第１塗布層塗設基材５の幅に一致させるか、或は
これより多少小としても差し支えない。It is needless to say that the present invention is not limited to the above embodiment and can be variously modified. In the above-described embodiment, the width of the formed curtain film is set to be larger than the width of the first coating layer-coated substrate 5, but this is to prevent an increase in coating amount at both ends of the coating layer. When the increase in the coating amount is small or is not a serious problem, or in Japanese Patent Publication No.
In the case where it can be solved by adopting the method disclosed in Japanese Unexamined Patent Publication or the like or other method for preventing increase in coating amount, the vertical curtain film is made to match the width of the first coating layer coated substrate 5, It can be a little smaller.
【００２６】又、カーテンヘッドにプロファイル調整機
構或は制御機構を付設することも可能である。特に、図
１に示されるスリット２に開度プロファイル調整機構を
付設すると、特に塗布幅が大きくなった場合に、幅方向
でより均一な塗布量プロファイルを得ることができる。It is also possible to attach a profile adjusting mechanism or a control mechanism to the curtain head. In particular, if an opening degree profile adjusting mechanism is attached to the slit 2 shown in FIG. 1, a more uniform coating amount profile in the width direction can be obtained particularly when the coating width becomes large.
【００２７】本発明における顔料塗被紙は、原紙の片面
或は両面に少なくとも２層の顔料及び接着剤を主成分と
して構成される塗布層を設けたものを指す。The pigment-coated paper in the present invention refers to a base paper provided with a coating layer composed of at least two layers of a pigment and an adhesive as main components on one side or both sides.
【００２８】本発明において用いることができる原紙と
しては、一般に使用される上質紙、中質紙、更紙、合成
紙、プラスティックフィルム等を例外なく含む。The base paper which can be used in the present invention includes, without exception, generally used high-quality paper, medium-quality paper, waste paper, synthetic paper, plastic film and the like.
【００２９】本発明において、第１塗布層の塗布に用い
ることができる塗布方式としては、ブレード、エアナイ
フ、ロッド、メータリングバー、カーテン、ダイ、リッ
プ、スライドホッパー、コンマ、マイクログラビア、ゲ
ートロール、パドル、グラビアロール、リバースロール
等の塗布方式が挙げられる。又、第１塗布層の塗布は、
抄紙機に付設してオンマシン形式で塗布する方式、抄紙
機と独立して、オフマシン形式で塗布する方式のいずれ
の方式を採ることも可能である。In the present invention, as a coating method which can be used for coating the first coating layer, a blade, an air knife, a rod, a metering bar, a curtain, a die, a lip, a slide hopper, a comma, a micro gravure, a gate roll, Application methods such as paddle, gravure roll, and reverse roll can be used. In addition, the coating of the first coating layer,
It is possible to adopt either a method of applying on-machine form attached to a paper machine or a method of applying on-machine form independently of the paper machine.
【００３０】本発明において、第２塗布層の塗布に用い
ることができる塗布方式としては、カーテン塗布方式に
限定されるが、塗布ヘッドの方式として、エクストルー
ジョン方式、スライド方式を例外なく含む。又、第２塗
布層の塗布装置は、単独のラインに設置することも、抄
紙機に付設したオンマシン形式をとることや第１塗布層
や下塗層塗布基材の塗布装置と組み合わせて同一のライ
ンに設置することも可能である。In the present invention, the coating system that can be used for coating the second coating layer is limited to the curtain coating system, but the coating head system includes the extrusion system and the slide system without exception. Further, the coating device for the second coating layer may be installed on a single line, may be an on-machine type attached to a paper machine, or may be the same as the coating device for the first coating layer or the base coating layer coating substrate. It is also possible to install on the line.
【００３１】本発明において、顔料及び接着剤を主成分
とする塗布液とは、顔料と接着剤、その他添加剤と共に
水に溶解もしくは分散せしめた液であって、顔料、接着
剤、その他添加剤の固形分濃度が、１０〜７０重量％の
ものを言う。顔料、接着剤の配合割合は、一般に顔料１
００重量部に対し、接着剤が５重量部以上、好ましく
は、１０〜７０重量部であることが望ましい。In the present invention, the coating liquid containing a pigment and an adhesive as main components is a liquid in which the pigment, the adhesive and other additives are dissolved or dispersed in water, and the pigment, the adhesive and the other additives are added. Having a solid content concentration of 10 to 70% by weight. The mixing ratio of pigment and adhesive is generally Pigment 1
It is desirable that the amount of the adhesive is 5 parts by weight or more, preferably 10 to 70 parts by weight, based on 00 parts by weight.
【００３２】本発明で用いられる顔料としては、カオリ
ン、クレー、炭酸カルシウム、サチンホワイト、酸化チ
タン、水酸化アルミニウム、酸化亜鉛、硫酸バリウム、
硫酸カルシウム、シリカ、活性白土、レーキ、プラスチ
ックピグメント、バインダーピグメント等が挙げられ
る。The pigment used in the present invention includes kaolin, clay, calcium carbonate, satin white, titanium oxide, aluminum hydroxide, zinc oxide, barium sulfate,
Calcium sulfate, silica, activated clay, lake, plastic pigment, binder pigment and the like can be mentioned.
【００３３】本発明に用いられる接着剤としては、スチ
レン・ブタジエン系、酢ビ・アクリル系、エチレン・酢
ビ系、ブタジエン・メチルメタクリル系、酢ビ・ブチル
アクリレート系等の各種共重合体、ポリビニルアルコー
ル、無水マレイン酸共重合体、イソブテン・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
重合体等の合成系接着剤、酸化澱粉、エーテル化澱粉、
エステル化澱粉、酵素変性澱粉やそれらをフラッシュド
ライして得られる冷水可溶性澱粉、カゼイン、大豆蛋白
等の天然系接着剤などのような一般に知られた接着剤が
挙げられる。又、必要に応じて、増粘剤、保水剤、耐水
化剤、着色剤等の通常の塗被紙用顔料塗布液に配合され
る各種助剤が適宜使用できる。As the adhesive used in the present invention, various copolymers such as styrene / butadiene type, vinyl acetate / acrylic type, ethylene / vinyl acetate type, butadiene / methyl methacrylic type, vinyl acetate / butyl acrylate type, polyvinyl, etc. Alcohol, maleic anhydride copolymer, isobutene / maleic anhydride copolymer, synthetic adhesive such as acrylic acid / methylmethacrylate copolymer, oxidized starch, etherified starch,
Commonly known adhesives such as esterified starch, enzyme-modified starch and cold water-soluble starch obtained by flash-drying them, natural adhesives such as casein and soybean protein, and the like can be mentioned. Further, if necessary, various auxiliaries such as a thickener, a water retention agent, a water resistant agent, a colorant and the like, which are added to an ordinary pigment coating solution for coated paper, can be appropriately used.
【００３４】本発明において、第２塗布層或は第１塗布
層に用いられる顔料及び接着剤を主成分とする塗布液の
塗布量は、乾燥重量規準で、１ｇ／ｍ2以上、好ましく
は、３〜３０ｇ／ｍ2が適当である。In the present invention, the coating amount of the coating liquid mainly composed of the pigment and the adhesive used for the second coating layer or the first coating layer is 1 g / m 2 or more, preferably, on a dry weight basis, 3 to 30 g / m 2 is suitable.
【００３５】[0035]
【作用】本発明において、第２塗布層が塗布される第１
塗布層表面の１０点平均粗さＲｚを１３μｍ以下とし、
第２塗布層がカーテン塗布装置を用いて塗布することに
より、塗布層の厚み及び密度が均一で塗布ムラ及び印刷
ムラ発生がない顔料塗被紙を得ることができる。In the present invention, the first coating applied with the second coating layer
10-point average roughness Rz of the coating layer surface is 13 μm or less,
By applying the second coating layer using a curtain coating device, it is possible to obtain a pigment-coated paper in which the thickness and density of the coating layer are uniform, and coating unevenness and printing unevenness do not occur.
【００３６】[0036]
【実施例】以下、本発明の効果を一層明瞭とするために
実施例を掲げる。なお、実施例中の部数は、全て重量部
を示し、特にことわりのない限り、濃度は固形分濃度の
重量％、塗布量は、乾燥塗布量を示す。Ｒｚの測定は、
触針式表面粗さ計である東京精密（株）製のハンディー
サーフＥ−３０Ａにより行った。EXAMPLES Examples will be given below in order to further clarify the effects of the present invention. In the examples, all parts are parts by weight, and unless otherwise specified, the concentration represents the solid content concentration in% by weight and the coating amount represents the dry coating amount. The measurement of Rz is
The measurement was performed with a handy surf E-30A manufactured by Tokyo Seimitsu Co., Ltd., which is a stylus type surface roughness meter.
【００３７】実施例１ 坪量６０ｇ／ｍ2の上質紙に、ブレード塗布装置によ
り、塗布量が１０ｇ／ｍ2となるように、以下の配合の
固形分濃度が５６％の第１塗布層塗布液を、塗布速度１
０００ｍ／分で塗布し、第１塗布層を設けた第１塗布層
塗設基材の作製を行った。なお、このときの第１塗布層
のＲｚは１１．１μｍであった。Example 1 A high-quality paper having a basis weight of 60 g / m 2 was coated with a blade coating device so that the coating amount was 10 g / m 2, and the first coating layer having a solid content concentration of 56% was coated. Liquid coating speed 1
The coating was performed at 000 m / min to prepare a first coating layer-coated base material provided with the first coating layer. The Rz of the first coating layer at this time was 11.1 μm.
【００３８】 ＜第１塗布層塗布液配合＞ 市販重質炭酸カルシウム（カービタル９０） １００部 市販ポリアクリル酸系分散剤 ０．２部 市販燐酸エステル化澱粉 ９部 市販スチレン・ブタジエン・ラテックス ８部 アンモニア ０．１部<1st coating layer coating liquid formulation> Commercial ground calcium carbonate (Carbital 90) 100 parts Commercial polyacrylic acid-based dispersant 0.2 parts Commercial phosphate esterified starch 9 parts Commercial styrene-butadiene latex 8 parts Ammonia 0.1 part
【００３９】以下の配合で固形分濃度が４８％の第２塗
布層塗布液を作製し、この第１塗布層塗設基材にカーテ
ン塗布装置を用い、８００ｍ／分の塗布速度で、以下の
塗布液を塗布量が１５ｇ／ｍ2になるように塗布、乾燥
を行い、顔料塗被紙を得た。A coating solution for the second coating layer having a solid content concentration of 48% was prepared with the following composition, and a curtain coating device was used for this first coating layer coating substrate at a coating speed of 800 m / min to give the following: The coating liquid was applied so as to have a coating amount of 15 g / m 2 and dried to obtain a pigment-coated paper.
【００４０】 ＜第２塗布層塗布液配合＞ 市販重質炭酸カルシウム（カービタル９０） ２０部 市販１級カオリン（ウルトラホワイト９０） ７０部 市販サチンホワイト １０部 市販ポリアクリル酸系分散剤 ０．３部 市販燐酸エステル化澱粉 ３部 スチレン・ブタジエン・ラテックス １８部<Composition of coating liquid for second coating layer> Commercially available heavy calcium carbonate (carbital 90) 20 parts Commercially available primary kaolin (ultra white 90) 70 parts Commercially available satin white 10 parts Commercially available polyacrylic acid-based dispersant 0.3 parts Commercially available phosphoric esterified starch 3 parts Styrene-butadiene latex 18 parts
【００４１】実施例２ 実施例１における第１塗布層塗布液配合の顔料を、市販
重質炭酸カルシウム（カービタル９０）８０部、市販重
質炭酸カルシウム（カービタル７５）２０部とした以外
は、実施例１と同様の方法で、顔料塗被紙を得た。この
とき、第１塗布層のＲｚは、１２．２μｍであった。Example 2 Example 1 was repeated except that the pigment in the coating liquid for the first coating layer in Example 1 was changed to 80 parts of commercially available heavy calcium carbonate (carbital 90) and 20 parts of commercially available heavy calcium carbonate (carbital 75). A pigment-coated paper was obtained in the same manner as in Example 1. At this time, Rz of the first coating layer was 12.2 μm.
【００４２】実施例３ 実施例１における第１塗布層塗布液配合の顔料を、市販
重質炭酸カルシウム（カービタル９０）３０部、市販２
級カオリン（ハイドラスパース）７０部とした以外は、
実施例１と同様の方法で、顔料塗被紙を得た。このと
き、第１塗布層のＲｚは、８．９μｍであった。Example 3 30 parts of commercially available ground calcium carbonate (Carbital 90) and commercially available 2 were used as the pigment of the coating solution for the first coating layer in Example 1.
Except 70 parts of high grade kaolin (hydra sparse)
A pigment-coated paper was obtained in the same manner as in Example 1. At this time, Rz of the first coating layer was 8.9 μm.
【００４３】実施例４ 実施例１における第１塗布層塗布液配合の顔料を、市販
２級カオリン（ハイドラスパース）７０部、市販１級カ
オリン（ウルトラホワイト９０）３０部とした以外は、
実施例１と同様の方法で、顔料塗被紙を得た。このと
き、第１塗布層のＲｚは、７．２μｍであった。Example 4 Except that the pigment of the coating liquid for the first coating layer in Example 1 was 70 parts of commercially available secondary kaolin (hydrasperth) and 30 parts of commercially available primary kaolin (Ultra White 90).
A pigment-coated paper was obtained in the same manner as in Example 1. At this time, Rz of the first coating layer was 7.2 μm.
【００４４】比較例１ 実施例１における第１塗布層塗布液配合の顔料を、市販
重質炭酸カルシウム（カービタル９０）５０部、市販重
質炭酸カルシウム（カービタル７５）５０部とした以外
は、実施例１と同様の方法で、顔料塗被紙を得た。この
とき、第１塗布層のＲｚは、１３．８μｍであった。Comparative Example 1 The procedure of Example 1 was repeated except that the pigment of the coating liquid for the first coating layer in Example 1 was changed to 50 parts of commercially available heavy calcium carbonate (Carbital 90) and 50 parts of commercially available heavy calcium carbonate (Carbital 75). A pigment-coated paper was obtained in the same manner as in Example 1. At this time, Rz of the first coating layer was 13.8 μm.
【００４５】比較例２ 実施例１における第１塗布層塗布液配合の顔料を、市販
重質炭酸カルシウム（カービタル７５）６０部、市販２
級カオリン（ハイドラスパース）４０部とした以外は、
実施例１と同様の方法で、顔料塗被紙を得た。このと
き、第１塗布層のＲｚは、１３．９μｍであった。Comparative Example 2 60 parts of commercially available ground calcium carbonate (carbital 75) and 2 parts of commercially available 2
Except 40 parts of high grade kaolin (hydra sparse)
A pigment-coated paper was obtained in the same manner as in Example 1. At this time, Rz of the first coating layer was 13.9 μm.
【００４６】比較例３ 実施例１における第１塗布層塗布液配合の顔料を、市販
重質炭酸カルシウム（カービタル７５）８５部、市販２
級カオリン（ハイドラスパース）１５部とした以外は、
実施例１と同様の方法で、顔料塗被紙を得た。このと
き、第１塗布層のＲｚは、１８．６μｍであった。Comparative Example 3 85 parts of commercially available ground calcium carbonate (carbital 75) and 2 parts of commercially available pigment were used in the coating liquid for the first coating layer in Example 1.
Except for 15 parts of high grade kaolin (hydra sparse),
A pigment-coated paper was obtained in the same manner as in Example 1. At this time, Rz of the first coating layer was 18.6 μm.
【００４７】比較例４ 実施例１における第１塗布層塗布液配合の顔料を、市販
重質炭酸カルシウム（カービタル７５）１００部とした
以外は、実施例１と同様の方法で、顔料塗被紙を得た。
このとき、第１塗布層のＲｚは、２５．８μｍであっ
た。Comparative Example 4 Pigment-coated paper was prepared in the same manner as in Example 1 except that 100 parts of commercially available ground calcium carbonate (carbital 75) was used as the pigment in the coating liquid for the first coating layer in Example 1. Got
At this time, Rz of the first coating layer was 25.8 μm.
【００４８】比較例５ 第２塗布層の塗布装置として、ブレード塗布装置を使用
した以外は、実施例３と同様の方法で、顔料塗被紙を得
た。Comparative Example 5 A pigment coated paper was obtained in the same manner as in Example 3 except that a blade coating device was used as the coating device for the second coating layer.
【００４９】比較例６ 第２塗布層の塗布装置として、エアナイフ塗布装置を使
用した以外は、実施例３と同様の方法で、顔料塗被紙を
得た。Comparative Example 6 A pigment coated paper was obtained in the same manner as in Example 3 except that an air knife coating device was used as the coating device for the second coating layer.
【００５０】比較例７ 第２塗布層の塗布装置として、リバースロール塗布装置
を使用した以外は、実施例３と同様の方法で、顔料塗被
紙を得た。Comparative Example 7 A pigment coated paper was obtained in the same manner as in Example 3 except that a reverse roll coating device was used as the coating device for the second coating layer.
【００５１】得られた顔料塗被紙は、全て同一の条件で
カレンダー処理を行った後に評価した。The resulting pigment coated papers were all calendered under the same conditions and then evaluated.
【００５２】顔料塗被紙の評価項目としては、次に述べ
る通りである。 ［ブリスター或はクレーター］第２塗布層のブリスター
或はクレーターの発生状況は、６０倍の光学式顕微鏡を
用いて、１ｍｍｘ１ｍｍの平方範囲内のブリスター及び
クレーターの数を目視計測する方法を採った。 ［塗布ムラの発生状況］厚み及び密度の均一性は、目視
により観察し、目立った塗布ムラがある場合に、ムラの
発生状況を記述した。 ［印刷ムラ］塗布ムラと密接な関係のある印刷後の印刷
ムラは、印刷後に目視評価した。印刷ムラの評価は、４
色刷りローランドオフセット印刷機にて、湿し水過多の
条件で印刷し、一昼夜室温にて放置し、サンプルのシア
ンの単色の網点の面積率が５０％の印刷部に関して、目
視により行った。（単位：５段階評価で５が最も優れ
る）The evaluation items of the pigment coated paper are as described below. [Blister or Crater] The occurrence of blisters or craters in the second coating layer was determined by visually measuring the number of blisters and craters within a square range of 1 mm × 1 mm using a 60 × optical microscope. [Situation of occurrence of coating unevenness] The uniformity of thickness and density was visually observed, and when there was a noticeable coating unevenness, the situation of occurrence of unevenness was described. [Printing unevenness] Printing unevenness after printing, which is closely related to application unevenness, was visually evaluated after printing. Evaluation of uneven printing is 4
Printing was performed by a color printing Roland offset printing machine under the condition of excessive dampening water, allowed to stand at room temperature for one day and night, and visually printed on a printed portion of the sample having an area ratio of cyan monochromatic halftone dots of 50%. (Unit: 5 out of 5 is the best)
【００５３】[0053]
【表１】 [Table 1]
【００５４】＜評価結果＞表１のような評価結果を得た
が、実施例のようにカーテン塗布装置を用い、第１塗布
層のＲｚを１３μｍ以下とすることにより、ブリスター
やクレーター、塗布ムラ及び印刷ムラの発生が見られ
ず、品質的に満足の得られる顔料塗被紙を得ることがで
きた。比較例１〜４に示すように、Ｒｚが１３μｍを超
えると、第１塗布層のピットの発生に起因するブリスタ
ー及びクレーターの発生個数が多くなり、特に印刷ムラ
となって現れ、比較例５〜７では、カーテン塗布装置以
外の塗布装置の固有の塗布欠陥の発生が見られ満足の得
られる品質の塗被紙を得ることができなかった。<Evaluation Results> The evaluation results as shown in Table 1 were obtained. By using a curtain coating apparatus as in the example and setting the Rz of the first coating layer to 13 μm or less, blisters, craters, and coating unevenness were obtained. In addition, the occurrence of printing unevenness was not observed, and a pigment-coated paper with satisfactory quality could be obtained. As shown in Comparative Examples 1 to 4, when Rz is more than 13 μm, the number of blisters and craters generated due to the generation of pits in the first coating layer increases, and particularly print unevenness appears. In No. 7, coating defects unique to coating devices other than the curtain coating device were observed, and a coated paper of satisfactory quality could not be obtained.
【００５５】[0055]
【発明の効果】本発明によれば、塗布層の厚み及び密度
が均一で塗布ムラの発生がなく、印刷ムラが発生しない
顔料塗被紙を得ることができる。According to the present invention, it is possible to obtain a pigment-coated paper in which the thickness and density of the coating layer are uniform, the coating unevenness does not occur, and the printing unevenness does not occur.
【図１】 本発明の一実施例を示すカーテン塗布装置の
概略図。FIG. 1 is a schematic view of a curtain coating apparatus showing an embodiment of the present invention.
１ コーターヘッド ２ スリット ３ リップ ４ カーテン膜 ５ 第１塗布層塗設基材 ６ マニホールド ７ ロール ８ 遮風板 ９ 受液槽 １０ａ、１０ｂ エッジガイド １１ 貯蔵タンク １２ 給液ポンプ 1 Coater Head 2 Slit 3 Lip 4 Curtain Film 5 First Coating Layer Coating Substrate 6 Manifold 7 Roll 8 Wind Bar 9 Liquid Receiving Tank 10a, 10b Edge Guide 11 Storage Tank 12 Liquid Supply Pump
Claims (2)
層を設けた顔料塗被紙において、原紙或は下塗層塗設基
材上に、ＪＩＳ Ｂ０６０１に規定される１０点平均粗
さＲｚが１３μｍ以下の第１塗布層を設け、該第１塗布
層表面に、カーテン塗布装置を用いて第２塗布層を設け
てなることを特徴とする顔料塗被紙。1. A pigment-coated paper in which at least two coating layers are provided on one surface of a base paper, and a 10-point average roughness Rz defined in JIS B0601 is provided on the base paper or the basecoat layer-coated substrate. Is 13 μm or less, and a second coating layer is provided on the surface of the first coating layer by using a curtain coating device.
層を設けた顔料塗被紙の製造方法において、原紙或は下
塗層塗設基材に、ＪＩＳ Ｂ０６０１に規定される１０
点平均粗さＲｚが１３μｍ以下となるように第１塗布層
を塗設して後、該第１塗布層上に、カーテン塗布装置を
用いて第２塗布層を塗設することを特徴とする顔料塗被
紙の製造方法。2. A method for producing a pigment-coated paper in which at least two or more coating layers are provided on one side of a base paper, the base paper or the undercoat layer-coated substrate is specified in JIS B0601.
The first coating layer is coated so that the point average roughness Rz is 13 μm or less, and then the second coating layer is coated on the first coating layer using a curtain coating device. Method for producing pigment-coated paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17781693A JPH07119083A (en) | 1993-07-19 | 1993-07-19 | Pigment-coated paper and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17781693A JPH07119083A (en) | 1993-07-19 | 1993-07-19 | Pigment-coated paper and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07119083A true JPH07119083A (en) | 1995-05-09 |
Family
ID=16037602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17781693A Pending JPH07119083A (en) | 1993-07-19 | 1993-07-19 | Pigment-coated paper and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07119083A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6099913A (en) * | 1998-10-20 | 2000-08-08 | Eastman Kodak Company | Method for curtain coating at high speeds |
| US6103313A (en) * | 1998-10-20 | 2000-08-15 | Eastman Kodak Company | Method for electrostatically assisted curtain coating at high speeds |
| WO2004035929A1 (en) * | 2002-10-15 | 2004-04-29 | Dow Global Technologies Inc. | Method of producing a multilayer coated substrate having improved barrier properties |
| EP1416088A3 (en) * | 2002-10-15 | 2004-05-12 | Dow Global Technologies Inc. | Process for making coated paper or paperboard |
| US7364774B2 (en) | 2002-04-12 | 2008-04-29 | Dow Global Technologies Inc. | Method of producing a multilayer coated substrate having improved barrier properties |
| US7425246B2 (en) | 2001-04-14 | 2008-09-16 | Dow Global Technologies Inc. | Process for making multilayer coated paper or paperboard |
| US7473333B2 (en) | 2002-04-12 | 2009-01-06 | Dow Global Technologies Inc. | Process for making coated paper or paperboard |
| JP2011184820A (en) * | 2010-03-08 | 2011-09-22 | Mitsubishi Paper Mills Ltd | Coated paper for printing |
| US8592002B2 (en) | 2004-09-17 | 2013-11-26 | Basf Aktiengesellschaft | Method for the production of single-and/or multiple-coated substrates |
-
1993
- 1993-07-19 JP JP17781693A patent/JPH07119083A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6099913A (en) * | 1998-10-20 | 2000-08-08 | Eastman Kodak Company | Method for curtain coating at high speeds |
| US6103313A (en) * | 1998-10-20 | 2000-08-15 | Eastman Kodak Company | Method for electrostatically assisted curtain coating at high speeds |
| US7425246B2 (en) | 2001-04-14 | 2008-09-16 | Dow Global Technologies Inc. | Process for making multilayer coated paper or paperboard |
| US7364774B2 (en) | 2002-04-12 | 2008-04-29 | Dow Global Technologies Inc. | Method of producing a multilayer coated substrate having improved barrier properties |
| US7473333B2 (en) | 2002-04-12 | 2009-01-06 | Dow Global Technologies Inc. | Process for making coated paper or paperboard |
| WO2004035929A1 (en) * | 2002-10-15 | 2004-04-29 | Dow Global Technologies Inc. | Method of producing a multilayer coated substrate having improved barrier properties |
| EP1416087A1 (en) | 2002-10-15 | 2004-05-06 | Dow Global Technologies Inc. | Method of producing a multilayer coated substrate having improved barrier properties |
| EP1416088A3 (en) * | 2002-10-15 | 2004-05-12 | Dow Global Technologies Inc. | Process for making coated paper or paperboard |
| JP2004148307A (en) * | 2002-10-15 | 2004-05-27 | Dow Global Technologies Inc | Method of manufacturing multilayer coated support improved in barrier properties |
| US8592002B2 (en) | 2004-09-17 | 2013-11-26 | Basf Aktiengesellschaft | Method for the production of single-and/or multiple-coated substrates |
| JP2011184820A (en) * | 2010-03-08 | 2011-09-22 | Mitsubishi Paper Mills Ltd | Coated paper for printing |
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