JPH11279985A - White paper board - Google Patents
White paper boardInfo
- Publication number
- JPH11279985A JPH11279985A JP7889898A JP7889898A JPH11279985A JP H11279985 A JPH11279985 A JP H11279985A JP 7889898 A JP7889898 A JP 7889898A JP 7889898 A JP7889898 A JP 7889898A JP H11279985 A JPH11279985 A JP H11279985A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- pam
- surface layer
- pva
- white paperboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】 本発明は、包装用の箱など
に使用される白板紙に関する。さらに詳しくは、印刷時
の障害が少ない白板紙を提供するものである。TECHNICAL FIELD The present invention relates to a white paperboard used for packaging boxes and the like. More specifically, the present invention is to provide a white paperboard having little trouble during printing.
【０００２】[0002]
【従来の技術】 白板紙は例えば、洗剤箱、ティッシュ
ペーパーの箱、写真フィルムの箱、市販の薬の箱などの
物品包装用の箱として広く使用されている。また、本の
カバー、絵本などのような包装以外の用途にも使用され
ている。2. Description of the Related Art White paperboard is widely used as a box for packing articles such as a detergent box, a tissue paper box, a photographic film box, and a commercially available medicine box. It is also used for applications other than packaging, such as book covers and picture books.
【０００３】白板紙は一般に表層、中層、裏層の少なく
とも３層以上からなり、中層には脱墨しない古紙パルプ
が使用され、表層にはバージンパルプまたは脱墨された
白色度の高い古紙パルプを用いる。裏層は用途により異
なり、両面に白さが必要な場合には表層と同様とし、そ
の必要がない場合は白色度の低い古紙パルプを用いる。[0003] White paperboard is generally composed of at least three layers of a surface layer, a middle layer and a back layer. For the middle layer, non-deinked waste paper pulp is used. Used. The back layer differs depending on the application. When white is required on both surfaces, the back layer is the same as the surface layer. When white is not required, waste paper pulp having low whiteness is used.
【０００４】中層の色を隠蔽するためには、表層には隠
蔽性が必要で、ある程度の厚さが必要となる。しかし、
表層のみに隠蔽性を求めるとコスト的に高くなるので、
中層と表層の間に、ある程度の白色度のある表下層を設
けることが多い。より美しい外観を必要とする場合に
は、一般の印刷用塗工紙と同様に白色度が高い顔料を用
いた塗料を表層表面に塗工する。In order to conceal the color of the middle layer, the surface layer needs to have a concealing property and needs a certain thickness. But,
If concealment is required only for the surface layer, it will be costly.
A lower surface layer having a certain degree of whiteness is often provided between the middle layer and the surface layer. When a more beautiful appearance is required, a paint using a pigment having high whiteness is applied to the surface of the surface layer as in the case of a general coated paper for printing.
【０００５】[0005]
【発明が解決しようとする課題】 白板紙は、抄紙・塗
工後、印刷機にかけられるまでの間、巻取または枚葉で
保存・輸送されるが、表層の塗工表面と裏層が荷重を受
けて接触している時間があり、これを剥す時に裏層表面
の一部が表層塗工面に取られて転移することがある。こ
の現象を「裏ケバ」と称する。「裏ケバ」がおこると、
印刷した時に表面に付着している不純物により印刷が損
なわれるトラブルが発生する。本発明は「裏ケバ」によ
る印刷トラブルを解消することを課題とする。Problems to be Solved by the Invention White paperboard is stored and transported in a roll or sheet until it is applied to a printing machine after papermaking and coating, but the coated surface of the surface layer and the back layer are under load. The surface of the back layer may be partially transferred to the surface-coated surface when peeled off. This phenomenon is called “back fluff”. When the "backside fluff" occurs,
A problem occurs in that printing is impaired by impurities adhering to the surface during printing. SUMMARY OF THE INVENTION It is an object of the present invention to eliminate a printing trouble caused by "back fringing".
【０００６】[0006]
【課題を解決するための手段】 上記課題を解決するた
め、本発明は以下の構成を採る。即ち本発明の第１の発
明は、「表層、中層、裏層の３層以上の層から成る白板
紙において、表層表面には顔料塗工層を有し、裏層が古
紙を主体とする層であり、裏層にポリアクリルアミド
（ＰＡＭ）を固形で０．１ｇ／ｍ2以上塗布し、更にポ
リビニルアルコール（ＰＶＡ）を固形で０．１ｇ／ｍ2
以上塗布することを特徴とする白板紙」であり、第２の
発明は、「ＰＡＭとＰＶＡを混合した塗液を固形で０．
１ｇ／ｍ2以上塗布することを特徴とする白板紙」であ
り、第３の発明は、「第１または２の発明において、顔
料塗工層を設ける前の表層にＰＡＭを固形で０．１ｇ／
ｍ2以上塗布することを特徴とする白板紙」。更に好ま
しくは、「ＰＡＭまたはＰＶＡの塗布量が０．１〜０．
５ｇ／ｍ2である白板紙」とするのがよい。Means for Solving the Problems In order to solve the above problems, the present invention employs the following configurations. That is, the first invention of the present invention relates to a white paperboard comprising three or more layers of a surface layer, a middle layer and a back layer, wherein the surface layer has a pigment coating layer on the surface, and the back layer is a layer mainly composed of waste paper , and the polyacrylamide (PAM) was applied at a solid 0.1 g / m 2 or more on the back layer, further polyvinyl alcohol (PVA) with a solid 0.1 g / m 2
The second invention is "white paperboard characterized by being coated as described above."
The third invention is "white paperboard characterized in that it is applied in an amount of 1 g / m 2 or more," and in the first or second invention, 0.1 g of PAM as a solid is added to the surface layer before the pigment coating layer is provided. /
White paperboard "characterized by m 2 or more coating. More preferably, "the coating amount of PAM or PVA is 0.1 to 0.1.
5 g / m 2 white paperboard ”.
【０００７】本発明者らの研究によれば、裏ケバは裏層
の原料古紙の種類やロットにより発生するものである。
従って、裏ケバを解決する手段として、裏層に使用する
原料品質のバラツキを抑える必要があるが、近年の古紙
事情の悪化から原料面での厳選は難しい。[0007] According to the study of the present inventors, the back fluff is generated depending on the kind and lot of used waste paper of the back layer.
Therefore, as a means of solving back fluff, it is necessary to suppress variations in the quality of raw materials used for the back layer, but it is difficult to carefully select raw materials in view of the recent deterioration in waste paper conditions.
【０００８】また、裏ケバは表と裏が接しているときに
裏層表面の一部が表層上の顔料塗工層表面に取られて転
移する現象であり、表に塗工する顔料塗料と裏面への塗
布物質の粘着性低減と強度アップの対策が必要である。The back fluff is a phenomenon in which a part of the surface of the back layer is transferred to the surface of the pigment coating layer on the surface when the front and back are in contact with each other, and is transferred. It is necessary to take measures to reduce the adhesiveness of the coating substance on the back surface and increase the strength.
【０００９】本発明者らは、このような観点に立って研
究した結果、表裏の粘着性低減と強度アップが大きな要
因であることを発見し、本発明に到達した。The present inventors have conducted research from such a viewpoint, and as a result, have found that reduction in the adhesiveness of the front and back surfaces and increase in strength are major factors, and have reached the present invention.
【００１０】[0010]
【発明の実施の形態】 本発明の対象とする白板紙は、
少なくとも表層、中層、裏層の３層からなり、多くの場
合、表層と中層の間に表下層を設ける。表下層のパルプ
は表層より白色度が低く、中層の着色を隠蔽することを
主眼とする層である。各層は２層以上でも良く、合計で
５〜９層抄きの場合が最も多い。BEST MODE FOR CARRYING OUT THE INVENTION
It consists of at least three layers: a surface layer, a middle layer, and a back layer. In many cases, a lower surface layer is provided between the surface layer and the middle layer. The lower layer pulp is a layer whose whiteness is lower than that of the surface layer and whose main purpose is to mask the coloring of the middle layer. Each layer may be composed of two or more layers, and in most cases, a total of 5 to 9 layers is formed.
【００１１】表層は最外層であり、白色度の高いパルプ
を使用し、中の着色を完全に隠蔽する。表層に使用する
パルプは、晒パルプであり、広葉樹、針葉樹のいずれで
も良く、化学パルプ、機械パルプのいずれでも良い。ま
た、脱墨古紙パルプも使用でき、これらを混合して配合
しても良い。The surface layer is the outermost layer, and uses pulp having high whiteness to completely hide the coloring therein. The pulp used for the surface layer is bleached pulp, and may be any of hardwood and softwood, and may be any of chemical pulp and mechanical pulp. Also, deinked waste paper pulp can be used, and these may be mixed and blended.
【００１２】中層には新聞古紙、雑誌古紙、段ボール古
紙、雑古紙等を離解処理のみで使用する。裏層は一般的
には中層と同様であるが、脱墨古紙パルプを使用するこ
ともある。特別な場合には裏層にも表層と同様なパルプ
を用いて、両面に美粧性を出すこともあるが、この場合
は両面とも表層と認識すべきである。本発明は、裏層に
離解古紙パルプおよびまたは脱墨古紙パルプを用いる場
合を対象とする。For the middle layer, used newspaper, used magazine, used corrugated cardboard, used miscellaneous paper, etc. are used only for the disintegration process. The back layer is generally the same as the middle layer, but deinked waste paper pulp may be used. In special cases, pulp similar to the surface layer may be used for the back layer to provide cosmetics on both sides, but in this case, both sides should be recognized as the surface layer. The present invention is directed to a case where disintegrated waste paper pulp and / or deinked waste paper pulp is used for the back layer.
【００１３】本発明は、表層の表面に顔料塗工層を設け
た白板紙を対象とする。顔料塗工は一般の印刷用塗工紙
に使用する塗料と同様の塗料で行われる。塗料は、カオ
リン、炭酸カルシウム、プラスチックピグメント、二酸
化チタンなどの顔料、ＳＢＲラテックス、澱粉、ポリビ
ニルアルコールなどのバインダーなどから構成される。The present invention is directed to a white paperboard provided with a pigmented layer on the surface of a surface layer. The pigment coating is performed with the same paint as that used for general printing coated paper. The paint is composed of kaolin, calcium carbonate, plastic pigment, pigment such as titanium dioxide, SBR latex, starch, binder such as polyvinyl alcohol, and the like.
【００１４】本発明の特許請求の範囲に規定する裏層と
は、表面塗工された面と反対側の最外層を指す。本発明
では、裏層にＰＡＭを０．１ｇ／ｍ2以上塗布し、更に
ＰＶＡを０．１ｇ／ｍ2以上塗布することが必要であ
る。ＰＡＭおよびＰＶＡがこの範囲に満たないと、裏ケ
バが発生する頻度が高くなる。The back layer defined in the claims of the present invention refers to the outermost layer on the side opposite to the surface coated surface. In the present invention, it is necessary to apply PAM to the back layer in an amount of 0.1 g / m 2 or more and further apply PVA in an amount of 0.1 g / m 2 or more. If the PAM and PVA are less than this range, the frequency of occurrence of back fluff increases.
【００１５】本発明において、更に裏ケバを確実に防止
するためには、顔料塗工層を設ける前の表層にＰＡＭを
０．１ｇ／ｍ2以上塗布することにより、塗層強度を維
持したまま顔料塗料のバインダーレベルを下げることが
可能となり、表の粘着性低減を更に図ることができる。In the present invention, in order to further prevent back fluffing, PAM is applied at 0.1 g / m 2 or more to the surface layer before the pigment coating layer is provided, thereby maintaining the coating layer strength. It becomes possible to lower the binder level of the pigment paint, and it is possible to further reduce the tackiness in the table.
【００１６】本発明で、裏層及び顔料塗工する前の表層
に規定の薬品を塗布する方法としては、通常の抄紙工程
で用いられる塗布装置であればいずれでもよい。装置の
一例をあげれば、インクラインドサイズプレス、ゲート
ロールコーター、マシンカレンダー、ロッドコーター、
ブレードコーター、チャンピオンコーター等のクリアコ
ート・ピグメントコートのオンマシンおよびオフマシン
塗布装置があげられる。In the present invention, any method of applying a specified chemical to the back layer and the surface layer before the pigment is applied may be used as long as it is a coating apparatus used in a usual papermaking process. To give an example of the equipment, Inclined Size Press, Gate Roll Coater, Machine Calendar, Rod Coater,
On-machine and off-machine coating devices for clear coat and pigment coat such as blade coaters and champion coaters.
【００１７】本発明で、裏層及び顔料塗工する前の表層
に塗布する規定の薬品としては、ポリアクリルアミド
（ＰＡＭ）であれば内添用・外添塗布用何れでも良い。
また、ポリビニルアルコール（ＰＶＡ）も特に制限はな
い。また、塗布の順番・構成としては、ＰＡＭ塗布後に
ＰＶＡ塗布が好ましいが、両者の混合液を２回塗布して
も良い。ＰＡＭとＰＶＡの混合比率は５／９５〜９５／
５とすれば良い。In the present invention, as the prescribed chemical to be applied to the back layer and the surface layer before pigment coating, any of polyacrylamide (PAM) may be used for internal or external application.
Further, polyvinyl alcohol (PVA) is not particularly limited. In addition, the order and structure of the application are preferably PVA application after PAM application, but a mixture of both may be applied twice. The mixing ratio of PAM and PVA is 5/95 to 95 /
It should be set to 5.
【００１８】本発明のＰＡＭ塗布後にＰＶＡを塗布する
ことにより、大幅な裏ケバ抑止効果が得られる。その理
由としては、ＰＡＭを塗布することにより裏層のＺ軸方
向の強度が増し、その後、ＰＶＡを塗布することにより
造膜性が向上し、粘着性低減と強度アップが同時に可能
となると推測される。By applying PVA after the application of the PAM of the present invention, a significant back fluff suppressing effect can be obtained. It is presumed that the reason is that the application of PAM increases the strength of the back layer in the Z-axis direction, and then the application of PVA improves the film-forming properties, and enables simultaneous reduction in adhesiveness and increase in strength. You.
【００１９】[0019]
【実施例】 以下に実施例を挙げて本発明を詳細に説明
するが、本発明はこれに限定されるものではない。数量
表記の部や％は、固型分もしくは有効成分重量基準の数
値である。EXAMPLES Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto. The parts and percentages in the quantities are numerical values based on the solid content or the weight of the active ingredient.
【００２０】〈実施例１〜３、比較例１〜２〉裏層原料
として、通常の離解古紙パルプ製造処理（離解・除塵）
を行った雑誌古紙パルプスラリーを製造した。このスラ
リーを米坪４０ｇ／ｍ2の裏層として抄造したトータル
米坪３５０ｇ／ｍ2の白板紙を製造した。裏層には表１
に示すような薬品塗布構成とした。表層の上には、下記
処方の塗料により顔料塗工層を１９ｇ／ｍ2（上塗り９
ｇ／ｍ2、下塗り１０ｇ／ｍ2）を設けた。<Examples 1 to 3, Comparative Examples 1 and 2> Normal disintegrated waste paper pulp production processing (disintegration and dust removal) as a back layer material
A pulp slurry of the used magazine was produced. This slurry was used as a backing layer of 40 g / m 2 of rice and a white paperboard of 350 g / m 2 of total rice was produced. Table 1 for back layer
As shown in FIG. On the surface layer, a pigment coating layer of 19 g / m 2 (top coating 9
g / m 2 , undercoating 10 g / m 2 ).
【００２１】〈顔料塗料配合〉 上塗り：カオリン（カオファイン−９０）／炭酸カルシ
ウム（ブリリアント−１５）／二酸化チタン（クロノス
ＫＡ−１０）＝５５／３５／１０（部）、及びラテック
ス２０部、澱粉６部。 下塗り：カオリン（アルファグロス）／炭酸カルシウム
（ＳＬ−２２００）／炭酸カルシウム（タマパール１２
１ＭＣ）＝１５／５５／３０（部）、及びラテックス１
４部、澱粉６部。<Pigment paint formulation> Top coat: kaolin (Kao Fine-90) / calcium carbonate (Brilliant-15) / titanium dioxide (Kronos KA-10) = 55/35/10 (parts), latex 20 parts, starch 6 parts. Undercoat: kaolin (alpha gloss) / calcium carbonate (SL-2200) / calcium carbonate (Tamapearl 12)
1MC) = 15/55/30 (parts) and latex 1
4 parts, starch 6 parts.
【００２２】〈塗布薬品〉 ＰＡＭ：表面紙力剤ＳＴ−４８３Ｈ（日本ＰＭＣ製） ＰＶＡ：ＵＦ−１７０（ユニチカ製）<Coating Chemicals> PAM: Surface paper strength agent ST-483H (manufactured by Nippon PMC) PVA: UF-170 (manufactured by Unitika)
【００２３】各白板紙の裏ケバ評価を以下のように行っ
た。 〈裏ケバ評価方法〉 ＲＩ法：試料となる白板紙の裏面をＲＩ印刷機（１００
回転）で印刷した。印刷後にブランケットに取られた繊
維の個数を転写紙に写し取り、繊維の取られ具合を５段
階に分けて目視評価した。数値の高い方が繊維取られが
少なく良好を意味する。 実機印刷評価：白板紙をオフセット印刷機にて実機印刷
し、その印刷物のベタ部に生じた白抜け個数を画像解析
により処理した。The back fluff of each white paperboard was evaluated as follows. <Method for evaluating back fluff> RI method: The back side of white paperboard as a sample is printed on an RI printing machine (100
(Rotation). After printing, the number of fibers taken on the blanket was copied to a transfer paper, and the degree of fiber taken was evaluated visually by dividing it into five stages. The higher the value, the less the fiber is removed and the better. Actual machine printing evaluation: White paperboard was printed on an actual machine with an offset printing machine, and the number of white spots generated on solid portions of the printed matter was processed by image analysis.
【００２４】[0024]
【表１】 [Table 1]
【００２５】〈実施例４〜５、比較例３〉表２に示すよ
うな表裏のＰＡＭとＰＶＡの薬品塗布構成とし、更に上
塗り顔料塗料配合のラテックスを実施例１より２部減と
したものを実施例５とした。以下実施例１と同様にして
白板紙を得た。<Examples 4 and 5, Comparative Example 3> A composition in which PAM and PVA were coated on the front and back as shown in Table 2 and the latex containing the overcoat pigment paint was reduced by 2 parts from Example 1 was used. Example 5 was used. Thereafter, a white paperboard was obtained in the same manner as in Example 1.
【００２６】[0026]
【表２】 [Table 2]
【００２７】[0027]
【発明の効果】 本発明により、裏層に離解古紙パルプ
を使用しながら、かつ、確実に裏ケバを防止できるよう
になった。According to the present invention, while using disintegrated waste paper pulp for the back layer, back fluff can be reliably prevented.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡山 英治 大分県大分市大字小中島字江ノ道872−１ 王子製紙株式会社大分工場内 ──────────────────────────────────────────────────の Continuing on the front page (72) Eiji Okayama Inventor 872-1 Eno-michi, Onaka-shi, Oita-shi, Oita Oji Paper Co., Ltd. Oita Mill
Claims (3)
る白板紙において、表層には顔料塗工層を有し、裏層が
古紙パルプを主体とする層であり、該裏層にポリアクリ
ルアミド（ＰＡＭ）を０．１ｇ／ｍ2以上塗布し、更に
ポリビニルアルコール（ＰＶＡ）を０．１ｇ／ｍ2以上
塗布することを特徴とする白板紙。1. A white paperboard comprising three or more layers of a surface layer, a middle layer and a back layer, wherein the surface layer has a pigment coating layer, and the back layer is a layer mainly composed of waste paper pulp. A white paperboard, characterized in that polyacrylamide (PAM) is applied at 0.1 g / m 2 or more, and polyvinyl alcohol (PVA) is further applied at 0.1 g / m 2 or more.
を固型分で０．１ｇ／ｍ 2以上塗布したことを特徴とす
る白板紙。2. A coating liquid in which PAM and PVA are mixed in the back layer.
0.1 g / m in solid content TwoIt is characterized by having been applied above
White paperboard.
０．１ｇ／ｍ2以上塗布することを特徴とする請求項１
または２に記載の白板紙。3. The method according to claim 1, wherein PAM is applied at 0.1 g / m 2 or more to the surface layer before the pigment coating layer is provided.
Or the white paperboard according to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07889898A JP3509542B2 (en) | 1998-03-26 | 1998-03-26 | White paperboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07889898A JP3509542B2 (en) | 1998-03-26 | 1998-03-26 | White paperboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11279985A true JPH11279985A (en) | 1999-10-12 |
| JP3509542B2 JP3509542B2 (en) | 2004-03-22 |
Family
ID=13674652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07889898A Expired - Fee Related JP3509542B2 (en) | 1998-03-26 | 1998-03-26 | White paperboard |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3509542B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146697A (en) * | 1999-11-19 | 2001-05-29 | Oji Paper Co Ltd | Decoration liner |
| JP2010150723A (en) * | 2008-12-26 | 2010-07-08 | Daio Paper Corp | Multilayered coated paperboard |
| JP2019194384A (en) * | 2018-04-26 | 2019-11-07 | 王子ホールディングス株式会社 | Coated paperboard and method for producing coated paperboard |
-
1998
- 1998-03-26 JP JP07889898A patent/JP3509542B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146697A (en) * | 1999-11-19 | 2001-05-29 | Oji Paper Co Ltd | Decoration liner |
| JP2010150723A (en) * | 2008-12-26 | 2010-07-08 | Daio Paper Corp | Multilayered coated paperboard |
| JP2019194384A (en) * | 2018-04-26 | 2019-11-07 | 王子ホールディングス株式会社 | Coated paperboard and method for producing coated paperboard |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3509542B2 (en) | 2004-03-22 |
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