JP2005248394A - Coated paper - Google Patents

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JP2005248394A
JP2005248394A JP2004062211A JP2004062211A JP2005248394A JP 2005248394 A JP2005248394 A JP 2005248394A JP 2004062211 A JP2004062211 A JP 2004062211A JP 2004062211 A JP2004062211 A JP 2004062211A JP 2005248394 A JP2005248394 A JP 2005248394A
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paper
strength agent
mass
polyamide epichlorohydrin
amphoteric polyacrylamide
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Shinya Hayakawa
信也 早川
Hiroyuki Matsubara
弘之 松原
Shinya Izumi
慎也 和泉
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Daio Paper Corp
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Daio Paper Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide coated paper excellent in printability, having strong tensile strength and suitable as wrapping paper material. <P>SOLUTION: The coated paper comprises a substrate paper containing amphoteric polyacrylamide-based paper-strengthening agent and polyamide epichlorohydrin-based paper-strengthening agent and is formed a pigment layer on at least one surface, wherein the content of the amphoteric polyacrylamide-based paper-strengthening agent and the polyamide epichlorohydrin-based paper-strengthening agent is 0.1-3.0 mass% based on the ratio of the solid to the mass of pulp, the mass ratio of the amphoteric polyacrylamide-based paper-strengthening agent to the polyamide epichlorohydrin-based paper-strengthening agent is 2:8 to 8:2, and smoothness of the pigment layer-formed surface is ≥500 sec. Talc, kaolin and the like are preferably used as the pigment. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、湿潤時の引張強度が強く、印刷適性に優れ、包装用紙材に適したコート紙に関する。   The present invention relates to a coated paper having a high tensile strength when wet, excellent printability, and suitable for a packaging paper material.

百貨店や小売店等で商品の包装や紙袋等に用いられる包装用紙材としては、主としてヤンキー抄紙機で抄造される片面光沢のいわゆる純白ロール紙の光沢面にグラビア印刷やオフセット印刷等により印刷したものが用いられている。ヤンキー抄紙機で抄紙される純白ロール紙は、表面平滑性や寸法安定性に優れ、グラビア印刷、オフセット印刷に適している。その一方で、紙の欠点である水に弱いという性質を有し、濡れると僅かな力であっても容易に破れてしまうという問題がある。   Wrapping paper materials used in product packaging and paper bags at department stores and retail stores, etc., are printed on the glossy surface of so-called pure white roll paper made with a Yankee paper machine by gravure printing or offset printing. Is used. Pure white roll paper made with a Yankee paper machine has excellent surface smoothness and dimensional stability and is suitable for gravure printing and offset printing. On the other hand, it has the property of being weak to water, which is a defect of paper, and there is a problem that even when it is wet, it can be easily torn even when it is wet.

紙材の耐水性を改善する従来技術としては、例えば紙材の両面にスチレン−ブタジエン共重合体ラテックスから構成される耐水層と所定の填料からなる印刷層を形成した耐水印刷用紙がある(特許文献1)。このように、紙材の表面に疎水性の樹脂層を形成することにより優れた耐水性を付与することが可能であるが、抄紙工程に加えて樹脂層を形成するための工程が必要となり、製造コストが高くなる。また、樹脂層を形成した紙材は比較的厚みがあるうえ、樹脂層に折り皺がつきにくいため、包装用紙材に適用することは困難である。
特開2002−69890号公報(請求項1)
As a conventional technique for improving the water resistance of a paper material, for example, there is a water-resistant printing paper in which a water-resistant layer composed of a styrene-butadiene copolymer latex and a printing layer composed of a predetermined filler are formed on both sides of a paper material (patent) Reference 1). Thus, it is possible to impart excellent water resistance by forming a hydrophobic resin layer on the surface of the paper material, but in addition to the paper making process, a process for forming the resin layer is required, Manufacturing cost increases. In addition, since the paper material on which the resin layer is formed is relatively thick and the resin layer is not easily creased, it is difficult to apply it to a packaging paper material.
JP 2002-69890 A (Claim 1)

本発明の目的は、グラビア印刷、オフセット印刷等の印刷適性に優れ、湿潤時の引張強度が強く、包装用紙材として好適なコート紙を提供することにある。   An object of the present invention is to provide a coated paper that is excellent in printability such as gravure printing and offset printing, has high tensile strength when wet, and is suitable as a packaging paper material.

本発明者等は鋭意研究の結果、所定量の両性ポリアクリルアミド系紙力剤とポリアミドエピクロロヒドリン系紙力剤とを内添した基紙の表面にピグメント層を形成したコート紙であって、ピグメント層を形成した面が所定の平滑度と光沢度とを有するものは、湿潤時の引張強度に優れるため濡れても破れにくく、印刷適性に優れることを見出し本発明を完成するに到った。   As a result of diligent research, the present inventors have obtained a coated paper in which a pigment layer is formed on the surface of a base paper in which a predetermined amount of an amphoteric polyacrylamide type paper strength agent and a polyamide epichlorohydrin type paper strength agent are internally added. The surface on which the pigment layer is formed has predetermined smoothness and glossiness is excellent in tensile strength when wet, so that it is difficult to break even when wet, and it is excellent in printability, thus completing the present invention. It was.

上記課題を解決する本発明は、以下に記載するものである。   The present invention for solving the above problems is described below.

〔1〕 両性ポリアクリルアミド系紙力剤及びポリアミドエピクロロヒドリン系紙力剤を含有する基紙の少なくとも片面にピグメント層を形成したコート紙であって、両性ポリアクリルアミド系紙力剤及びポリアミドエピクロロヒドリン系紙力剤の含有量がパルプ質量に対する固形分比率で0.1〜3.0質量%、両性ポリアクリルアミド系紙力剤とポリアミドエピクロロヒドリン系紙力剤の質量比が2:8〜8:2で、ピグメント層を形成した面の平滑度が500秒以上、光沢度が50%以上であるコート紙。   [1] Coated paper in which a pigment layer is formed on at least one side of a base paper containing an amphoteric polyacrylamide type paper strength agent and a polyamide epichlorohydrin type paper strength agent, The content of the chlorohydrin-based paper strength agent is 0.1 to 3.0% by mass in terms of the solid content with respect to the pulp mass, and the mass ratio of the amphoteric polyacrylamide-based paper strength agent to the polyamide epichlorohydrin-based paper strength agent is 2. : Coated paper with a surface on which the pigment layer is formed having a smoothness of 500 seconds or more and a glossiness of 50% or more.

本発明によれば、低コストで、グラビア印刷、オフセット印刷等の印刷適性に優れ、湿潤時の引張強度が強いコート紙が得られる。また、本発明のコート紙は湿潤強度が強いため、濡れても表面にシワ・チヂレ等が発生せず、美粧性が損なわれない。本発明のコート紙は、包装紙、包袋、紙袋等の包装用紙材及びポスター等の掲示物として好適である。   According to the present invention, it is possible to obtain a coated paper that is low in cost, excellent in printability such as gravure printing and offset printing, and has high tensile strength when wet. Further, since the coated paper of the present invention has a high wet strength, no wrinkles, wrinkles or the like are generated on the surface even when wet, and the cosmetic properties are not impaired. The coated paper of the present invention is suitable as a wrapping paper material such as a wrapping paper, a wrapping bag, a paper bag, or a post such as a poster.

本発明のコート紙は、ピグメント層を形成する基紙に両性ポリアクリルアミド系紙力剤及びポリアミドエピクロロヒドリン系紙力剤が必須成分として含まれるものである。   In the coated paper of the present invention, an amphoteric polyacrylamide type paper strength agent and a polyamide epichlorohydrin type paper strength agent are contained as essential components in the base paper forming the pigment layer.

基紙としては、白色のものが好ましい。   The base paper is preferably white.

両性ポリアクリルアミドはポリアクリルアミドにカチオン性の基を導入したポリマーであって、例えばアクリルアミド−ビニルモノマー共重合体、アクリルアミド−ジメチルアミノエチルメタクリレート共重合体等のカチオン性モノマーとアクリルアミドとの共重合体や、マンニッヒ変成ポリアクリルアミド、ホフマン分解ポリアクリルアミド等を挙げることができる。   Amphoteric polyacrylamide is a polymer in which a cationic group is introduced into polyacrylamide. For example, a copolymer of acrylamide and a cationic monomer such as acrylamide-vinyl monomer copolymer, acrylamide-dimethylaminoethyl methacrylate copolymer, , Mannich modified polyacrylamide, Hoffmann-degraded polyacrylamide, and the like.

ポリアミドエピクロロヒドリン系紙力剤としては、例えばポリアミドアミン・エピクロロヒドリンを挙げることができる。   Examples of the polyamide epichlorohydrin-based paper strengthening agent include polyamidoamine and epichlorohydrin.

両性ポリアクリルアミド系紙力剤に加えてポリアミドエピクロロヒドリン系紙力剤を使用することにより、乾燥時のみならず湿潤時においても優れた紙力増強効果を得ることができる。   By using a polyamide epichlorohydrin type paper strength agent in addition to the amphoteric polyacrylamide type paper strength agent, an excellent paper strength enhancing effect can be obtained not only during drying but also when wet.

本発明のコート紙における両性ポリアクリルアミド系紙力剤及びポリアミドエピクロロヒドリン系紙力剤の含有量としては、パルプ質量に対する固形分比率で0.1〜3.0質量%とするが、0.5〜2.0質量%とすることが好ましい。0.1質量%未満では、十分な紙力増強効果が得られず、3.0質量%を超えると添加量に見合う効果が得られにくい。また、両性ポリアクリルアミド系紙力剤とポリアミドエピクロロヒドリン系紙力剤の含有量は、質量比で2:8〜8:2とするが、3:7〜7:3とすることが好ましい。両性ポリアクリルアミド系紙力剤に対するポリアミドエピクロロヒドリン系紙力剤の質量比が4を超えると、ピグメントを塗工する塗工ロールと、ピグメント塗工後の工程におけるペーパーロールに汚れが発生する。ポリアミドエピクロロヒドリン系紙力剤に対する両性ポリアクリルアミド系紙力剤の質量比が4を超えると、得られるコート紙の湿潤強度が低下するため、濡れによりシワ、チヂレが生じる。   The content of the amphoteric polyacrylamide type paper strength agent and the polyamide epichlorohydrin type paper strength agent in the coated paper of the present invention is 0.1 to 3.0% by mass in terms of the solid content ratio with respect to the mass of the pulp. It is preferable to set it as 5-2.0 mass%. If it is less than 0.1% by mass, a sufficient paper strength enhancing effect cannot be obtained, and if it exceeds 3.0% by mass, it is difficult to obtain an effect commensurate with the amount added. Further, the content of the amphoteric polyacrylamide type paper strength agent and the polyamide epichlorohydrin type paper strength agent is set to 2: 8 to 8: 2 by mass ratio, but is preferably set to 3: 7 to 7: 3. . When the mass ratio of the polyamide epichlorohydrin-based paper strength agent to the amphoteric polyacrylamide-based paper strength agent exceeds 4, dirt is generated on the coating roll for applying the pigment and the paper roll in the process after the pigment coating. . When the mass ratio of the amphoteric polyacrylamide-based paper strength agent to the polyamide epichlorohydrin-based strength material exceeds 4, the wet strength of the resulting coated paper decreases, and thus wrinkles and wrinkles occur due to wetting.

本発明のコート紙のピグメント層を構成するピグメントとしては、公知の鉱物性白色顔料を制限なく用いることができるが、例えばタルク、カオリン、クレー、炭酸カルシウム、二酸化チタン、水酸化カルシウム、二酸化マグネシウム、シリカ等を挙げることができる。   As the pigment constituting the pigment layer of the coated paper of the present invention, a known mineral white pigment can be used without limitation, for example, talc, kaolin, clay, calcium carbonate, titanium dioxide, calcium hydroxide, magnesium dioxide, Silica etc. can be mentioned.

ピグメント層を構成するピグメントの塗工量としては、紙材の片面につき5〜25g/m2とすることが好ましく、8〜20g/m2とすることがより好ましい。5g/m2未満では印刷適性を向上させる効果が十分でなく、25g/m2を超えると塗工量に見合う効果が得られない傾向がある。 The coating amount of the pigment constituting the pigment layer is preferably 5 to 25 g / m 2 and more preferably 8 to 20 g / m 2 per one side of the paper material. If it is less than 5 g / m 2 , the effect of improving printability is not sufficient, and if it exceeds 25 g / m 2 , there is a tendency that an effect commensurate with the coating amount cannot be obtained.

本発明のコート紙は、両性ポリアクリルアミド系紙力剤、ポリアミドエピクロロヒドリン系紙力剤以外の紙力剤や他の添加剤が含まれていてもよい。他の紙力剤としては、例えば、澱粉、酸化澱粉、カルボキシメチル化澱粉等の澱粉;植物ガム;ポリビニルアルコール;カルボキシメチルセルロース等を挙げることができる。添加剤としては、例えばサイズ剤、定着剤、グリオキザール、消泡剤、剥離剤等を挙げることができる。   The coated paper of the present invention may contain a paper strength agent and other additives other than the amphoteric polyacrylamide type paper strength agent and the polyamide epichlorohydrin type paper strength agent. Examples of other paper strength agents include starches such as starch, oxidized starch, and carboxymethylated starch; plant gums; polyvinyl alcohol; carboxymethylcellulose and the like. Examples of the additive include a sizing agent, a fixing agent, glyoxal, an antifoaming agent, and a release agent.

特に、上記紙力剤とともに基紙にグリオキザールを添加した場合には、本発明のコート紙の湿潤紙力をより高めることができる。グリオキザールの含有量としては、パルプ質量に対する固形分比率で0.1〜0.5質量%することが好ましい。   In particular, when glyoxal is added to the base paper together with the paper strength agent, the wet paper strength of the coated paper of the present invention can be further increased. As content of a glioxal, it is preferable to make it into 0.1-0.5 mass% by the solid content ratio with respect to a pulp mass.

コート紙のピグメント層を形成した面のJIS P 8119に規定する平滑度は500秒以上とするが、800〜3000秒とすることが好ましい。平滑度が500秒未満であると、ピグメント層表面の細かい凹凸から、内部に水分が浸透しやすくなり、ピグメント層の割れや、原紙への水分浸透が促進されることになる。ピグメント層を形成した面の平滑度は、塗料中の鉱物性白色顔料の種類、量を調整したり、塗工層形成後にオンマシンカレンダーやスーパーカレンダー処理を施し、その線圧や段数を調節することにより500秒以上にすることができる。   The smoothness specified in JIS P 8119 on the surface of the coated paper on which the pigment layer is formed is 500 seconds or more, preferably 800 to 3000 seconds. When the smoothness is less than 500 seconds, moisture easily penetrates into the inside due to fine irregularities on the surface of the pigment layer, and cracking of the pigment layer and moisture penetration into the base paper are promoted. The smoothness of the surface on which the pigment layer is formed can be adjusted by adjusting the type and amount of mineral white pigment in the paint, or by applying on-machine calendering or supercalendering after forming the coating layer, and adjusting the line pressure and the number of steps. Can be made 500 seconds or more.

また、ピグメント層を形成した面のJIS P 8142に規定する光沢度は50%以上とするが、60〜95%とすることが好ましい。光沢度が50%未満であると印刷ムラが生じやすい。ピグメント層を形成した面の光沢度は、塗料中の鉱物性白色顔料の種類、量を調整したり、塗工層形成後にオンマシンカレンダーやスーパーカレンダー処理を施し、その線圧や段数を調節することにより50%以上とすることができる。   Moreover, the glossiness prescribed | regulated to JISP8142 of the surface in which the pigment layer was formed shall be 50% or more, However, It is preferable to set it as 60 to 95%. If the gloss is less than 50%, uneven printing tends to occur. Glossiness of the surface on which the pigment layer is formed can be adjusted by adjusting the type and amount of the mineral white pigment in the paint, or by applying on-machine calendering or super calendering after forming the coating layer, and adjusting the line pressure and the number of steps. Therefore, it can be made 50% or more.

本発明のコート紙の米坪としては、乾燥質量基準で40〜200g/m2とするが、50〜160g/m2とすることが好ましい。 The rice paper of the coated paper of the present invention is 40 to 200 g / m 2 on a dry mass basis, but preferably 50 to 160 g / m 2 .

コート紙の厚さとしては、35〜180μmとすることが好ましく、50〜160μmとすることがより好ましい。   The thickness of the coated paper is preferably 35 to 180 μm, and more preferably 50 to 160 μm.

本発明のコート紙は、両性ポリアクリルアミド系紙力剤及びポリアミドエピクロロヒドリン系紙力剤を添加した紙料を公知の抄紙機を用いて抄紙し、得られた基紙の少なくとも片面にピグメントを含有する塗料を塗工してピグメント層を形成することにより製造できる。   The coated paper of the present invention is made by using a known paper machine to make a paper stock to which an amphoteric polyacrylamide type paper strength agent and a polyamide epichlorohydrin type paper strength agent are added, and pigments are obtained on at least one side of the obtained base paper. It can manufacture by coating the paint containing this and forming a pigment layer.

紙料を抄紙する抄紙機としては、例えば長網ヤンキー抄紙機、長網多筒抄紙機等を挙げることができるが、表面平滑性や寸法安定性に優れた紙材が得られることからヤンキー抄紙機を用いることが好ましい。   Examples of paper machines for making paper stock include long net Yankee paper machines and long net multi-cylinder paper machines, but Yankee paper machines can be obtained because of their excellent surface smoothness and dimensional stability. It is preferable to use a machine.

基紙に塗料を塗工する方法としては公知の方法を用いることができるが、例えばブレードコート、エアナイフコート、カーテンコート、サイズプレスコート、カレンダーコート、グラビアコート、ロールコート等が使用できる。   As a method for applying a paint to the base paper, known methods can be used. For example, blade coating, air knife coating, curtain coating, size press coating, calendar coating, gravure coating, roll coating, and the like can be used.

得られた基紙に塗工する塗料には、ピグメントの他、バインダー等の通常用いられる成分を配合することができる。   In addition to pigments, commonly used components such as a binder can be blended in the paint applied to the obtained base paper.

バインダーとしては、公知の接着剤を制限なく用いることができるが、例えば、スチレン−ブタジエンラテックス、酢酸ビニル共重合体、アクリル共重合体等を挙げることができる。   As the binder, known adhesives can be used without limitation, and examples thereof include a styrene-butadiene latex, a vinyl acetate copolymer, and an acrylic copolymer.

塗料には、耐水化剤を添加することが好ましい。塗料に耐水化剤を添加することにより基紙に水分が浸透することを防止してコート紙の耐水性をより高めることができる。耐水化剤としては公知のものを制限なく使用できるが、ポリアミド系樹脂;ポリアミン系樹脂;ポリテトラフルオロエチレン、ポリクロロトリフルオロエチレン等のフッ素樹脂;グリオキザール等を挙げることができる。   It is preferable to add a waterproofing agent to the paint. By adding a water-proofing agent to the paint, it is possible to prevent water from penetrating into the base paper and further increase the water resistance of the coated paper. Known waterproofing agents can be used without limitation, and examples thereof include polyamide resins; polyamine resins; fluorine resins such as polytetrafluoroethylene and polychlorotrifluoroethylene; and glyoxal.

実施例1
叩解したパルプ(針葉樹材クラフトパルプ30質量%、広葉樹材クラフトパルプ70質量%)を水中に分散させ、両性ポリアクリルアミド系紙力剤(星光PMC株式会社製 SDS−281)とポリアミドエピクロロヒドリン系紙力剤(星光PMC株式会社製 WS−547)とを添加した紙料をヤンキー抄紙機により抄紙し、基紙を得た。基紙における両性ポリアクリルアミド系紙力剤の含有量はパルプ質量に対する固形分比率で0.8質量%、ポリアミドエピクロロヒドリン系紙力剤の含有量は0.4質量%であった。ピグメントとしてクレー90質量%と炭酸カルシウム10質量%を混合した塗料を基紙の光沢面にコートし、紙材を得た。なお、ピグメント塗工量は15g/m2とし、得られた紙材の米坪は100g/m2、厚さは95μmであった。
Example 1
Dispersed pulp (30% by weight of softwood kraft pulp, 70% by weight of hardwood kraft pulp) is dispersed in water, and an amphoteric polyacrylamide paper strength agent (SDS-281 manufactured by Seiko PMC Co., Ltd.) and polyamide epichlorohydrin system The paper stock to which a paper strength agent (WS-547 manufactured by Seiko PMC Co., Ltd.) was added was made with a Yankee paper machine to obtain a base paper. The content of the amphoteric polyacrylamide-based paper strength agent in the base paper was 0.8% by mass in terms of the solid content with respect to the pulp mass, and the content of the polyamide epichlorohydrin-based paper strength agent was 0.4% by mass. As a pigment, a coating material in which 90% by mass of clay and 10% by mass of calcium carbonate were mixed was coated on the glossy surface of the base paper to obtain a paper material. The pigment coating amount was 15 g / m 2 , and the obtained paper material had a basis weight of 100 g / m 2 and a thickness of 95 μm.

実施例2〜6、比較例1〜5
紙力剤の含有量を表1又は2に示す値とした以外は、実施例1と同様にして紙材を得た。
Examples 2-6, Comparative Examples 1-5
A paper material was obtained in the same manner as in Example 1 except that the content of the paper strength agent was changed to the value shown in Table 1 or 2.

実施例1〜6、比較例1〜5で得られた紙材の引張強度残存率、印刷適性、及び印刷外観変化を下記の方法により評価した。更に紙材のピグメント塗工面の平滑度及び光沢度の測定をそれぞれJIS P 8119、JIS P 8142の規定により行った。結果を表1及び2に示す。   The tensile strength residual ratio, printability, and print appearance change of the paper materials obtained in Examples 1 to 6 and Comparative Examples 1 to 5 were evaluated by the following methods. Furthermore, the smoothness and glossiness of the pigment coated surface of the paper were measured according to JIS P 8119 and JIS P 8142, respectively. The results are shown in Tables 1 and 2.

〈引張強度残存率〉
JIS P 8113の試験方法にて、紙の乾燥時と湿潤時における縦方向及び横方向の引張強度を測定した。紙材の乾燥時の縦方向及び横方向の引張強度平均値を乾燥時引張強度、紙材の湿潤時の縦方向及び横方向の引張強度平均値を湿潤時引張強度とし、下記式より引張強度残存率を測定した。
<Remaining tensile strength>
The tensile strength in the machine direction and the transverse direction when the paper was dried and wet was measured by the test method of JIS P 8113. The average tensile strength in the machine and transverse directions when paper is dried is the tensile strength during drying, and the average tensile strength in the machine and transverse directions when wet is the tensile strength when wet. The residual rate was measured.

引張強度残存率=(湿潤時引張強度/乾燥時引張強度)×100(%)
〈印刷適性〉
オフセット枚葉印刷機(ローランド社製)を使用して、紙材のピグメント塗工面にベタ印刷及びグラデーション印刷パターンを印刷した。印刷面のムラ、白ヌケを目視で観察し、下記の基準で評価した。
○:印刷ムラ、白ヌケが認められない。
△:若干の印刷ムラ、白ヌケが認められる。
×:印刷ムラ、白ヌケが著しい。
Tensile strength residual rate = (tensile strength when wet / tensile strength when dry) × 100 (%)
<Printability>
Using an offset sheet-fed printing press (manufactured by Roland), solid printing and a gradation printing pattern were printed on the pigment coated surface of the paper material. The printing surface unevenness and white spots were visually observed and evaluated according to the following criteria.
○: Printing unevenness and white spots are not recognized.
Δ: Slight printing unevenness and white spots are observed.
X: Print unevenness and white spots are remarkable.

〈印刷外観変化〉
紙材のピグメント塗工面にオフセット枚葉印刷機(ローランド社製)で写真調の印刷を施し、水中に24時間浸漬した。紙材を取り出した後、室温で十分に乾燥し、印刷面のシワ・チヂレによる美粧性の変化を目視で観察し、下記の基準で評価した。
○:シワ・チヂレが認められず美粧性が損なわれていない。
△:若干のシワ・チヂレが認められる。
×:シワ・チヂレが著しく美粧性に劣る。
<Change in printing appearance>
Photographic printing was performed on the pigment-coated surface of the paper material with an offset sheet-fed printing machine (manufactured by Roland Corp.) and immersed in water for 24 hours. After the paper material was taken out, it was sufficiently dried at room temperature, and the change in the cosmetic properties due to wrinkles and wrinkles on the printed surface was visually observed and evaluated according to the following criteria.
○: No wrinkles or spots are observed, and the cosmetic properties are not impaired.
Δ: Some wrinkles and spots are observed.
X: Wrinkles / chidles are remarkably inferior in cosmetics.

Figure 2005248394
Figure 2005248394

Figure 2005248394
A:両性ポリアクリルアミド系紙力剤
B:ポリアミドエピククロロヒドリン系紙力剤
Figure 2005248394
A: Amphoteric polyacrylamide type paper strengthening agent B: Polyamide epichlorohydrin type paper strengthening agent

Claims (1)

両性ポリアクリルアミド系紙力剤及びポリアミドエピクロロヒドリン系紙力剤を含有する基紙の少なくとも片面にピグメント層を形成したコート紙であって、両性ポリアクリルアミド系紙力剤及びポリアミドエピクロロヒドリン系紙力剤の含有量がパルプ質量に対する固形分比率で0.1〜3.0質量%、両性ポリアクリルアミド系紙力剤とポリアミドエピクロロヒドリン系紙力剤の質量比が2:8〜8:2で、ピグメント層を形成した面の平滑度が500秒以上、光沢度が50%以上であるコート紙。
A coated paper in which a pigment layer is formed on at least one side of a base paper containing an amphoteric polyacrylamide-based paper strength agent and a polyamide epichlorohydrin-based paper strength agent, the amphoteric polyacrylamide-based strength agent and the polyamide epichlorohydrin The content of the system paper strength agent is 0.1 to 3.0% by mass in terms of the solid content with respect to the mass of the pulp, and the mass ratio of the amphoteric polyacrylamide system paper strength agent and the polyamide epichlorohydrin type paper strength agent is 2: 8 to Coated paper having a smoothness of 500 seconds or more and a glossiness of 50% or more on the surface on which the pigment layer is formed at 8: 2.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011052342A (en) * 2009-09-02 2011-03-17 Oji Paper Co Ltd Coated wrapping paper
JP2017524080A (en) * 2014-07-30 2017-08-24 ムンクショー オサケ ユキチュア ユルキネン Method for producing heat-sealing barrier paper
JP7431612B2 (en) 2020-02-20 2024-02-15 日本製紙クレシア株式会社 Composite nonwoven fabric
JP7498575B2 (en) 2020-02-20 2024-06-12 日本製紙クレシア株式会社 Manufacturing method and manufacturing device for composite nonwoven fabric

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011052342A (en) * 2009-09-02 2011-03-17 Oji Paper Co Ltd Coated wrapping paper
JP2017524080A (en) * 2014-07-30 2017-08-24 ムンクショー オサケ ユキチュア ユルキネン Method for producing heat-sealing barrier paper
US10494768B2 (en) 2014-07-30 2019-12-03 Munksjö Oyj Method for the production of heat-sealing barrier paper
JP7431612B2 (en) 2020-02-20 2024-02-15 日本製紙クレシア株式会社 Composite nonwoven fabric
JP7498575B2 (en) 2020-02-20 2024-06-12 日本製紙クレシア株式会社 Manufacturing method and manufacturing device for composite nonwoven fabric

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