JP2612441B2 - Base paper for decorative sheet - Google Patents
Base paper for decorative sheetInfo
- Publication number
- JP2612441B2 JP2612441B2 JP62015221A JP1522187A JP2612441B2 JP 2612441 B2 JP2612441 B2 JP 2612441B2 JP 62015221 A JP62015221 A JP 62015221A JP 1522187 A JP1522187 A JP 1522187A JP 2612441 B2 JP2612441 B2 JP 2612441B2
- Authority
- JP
- Japan
- Prior art keywords
- base paper
- paper
- decorative sheet
- resin
- smoothness
- 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.)
- Expired - Fee Related
Links
Landscapes
- Laminated Bodies (AREA)
- Paper (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明の化粧シート用原紙は印刷及び塗工を施した
後、合板・パーチクルボード・繊維板等の基材に接着し
て建材または、家具等の構成部材の表面化粧用に供する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The base paper for decorative sheet of the present invention is printed and coated, and then adhered to a base material such as plywood, particle board, fiberboard, etc., for building materials or furniture. The surface of the constituent member of (1) is provided.
（従来の技術） 従来、紙をベースとする化粧シートは、例えば吸水性
良好な原紙に印刷し、合成繊維などを含浸乾燥後、更に
樹脂トップコートを行なうという方法によって得られて
いた。この方法では印刷後に合成樹脂液を含浸しなけれ
ばならないために原紙抄造にあたっては印刷適性をもた
せながら含浸性を持たせるよう配慮しなければならな
い。(Prior Art) Conventionally, paper-based decorative sheets have been obtained by, for example, printing on base paper having good water absorbency, impregnating and drying synthetic fibers and the like, and further performing resin top coating. In this method, it is necessary to impregnate the synthetic resin liquid after printing, and therefore, in making base paper, care must be taken to impart impregnating properties while maintaining printability.
然し一般には、印刷適性をもたせるためには紙を平滑
にすることが必須条件であり、このためには紙の製造過
程で、プレス，カレンダー等で紙を強圧することによ
り、平滑化処理を施こさねばならず、必然的に紙の密度
が高くなり、その結果含浸性が悪くなる。含浸性を保持
させる為には平滑化処理を充分行なうことが出来ず、そ
の結果として、印刷適性は不充分なものとなる。この方
式は含浸工程が印刷工程の後に来るという意味からアフ
ター含浸方式と称されるが、これに対して近年印刷工程
の前に、含浸する方式いわゆるプレ含浸方式が開発され
てきた。In general, however, it is essential that the paper is smooth to provide printability. For this purpose, in the paper manufacturing process, the paper is subjected to a smoothing treatment by strongly pressing the paper with a press, calender, or the like. It has to be squeezed, which inevitably increases the density of the paper, resulting in poor impregnation. In order to maintain the impregnating property, the smoothing treatment cannot be sufficiently performed, and as a result, the printability becomes insufficient. This method is called an after-impregnation method because the impregnation step comes after the printing step. On the other hand, a so-called pre-impregnation method has recently been developed before the printing step.
この方式では通常紙を抄造した後、樹脂液を含浸し、
さらに印刷適性を付与する為に、平滑化処理を行うこと
により、化粧シート用原紙が得られる。In this method, usually paper is made and then impregnated with a resin solution.
Further, by performing a smoothing treatment to impart printability, a base paper for a decorative sheet can be obtained.
（発明が解決しようとする問題点） 前記のプレ含浸方式により、得られる化粧シート用原
紙において、紙間強度を強くする為には、樹脂の含浸率
を高くする必要があるが、樹脂含浸率が高くなると含浸
後の紙の表面はプレスやカレンダー等では平滑化しにく
くなり、その結果として、充分な印刷適性が得られなく
なる。この為樹脂含浸率を低くして紙間強度を犠牲にす
るか、又は、樹脂含浸率を充分高くして印刷適性を犠牲
にするかあるいはその中間をとり、いずれの特性も不充
分なものにするしかなかった。(Problems to be Solved by the Invention) In the base paper for decorative sheet obtained by the pre-impregnation method described above, in order to increase the inter-sheet strength, it is necessary to increase the resin impregnation rate. When the surface tension is increased, the surface of the paper after impregnation becomes difficult to smoothen by a press, a calender, or the like, and as a result, sufficient printability cannot be obtained. For this reason, the resin impregnation rate is lowered to sacrifice the inter-sheet strength, or the resin impregnation rate is sufficiently increased to sacrifice printability or to take a middle point between them, and all properties are insufficient. I had to do it.
（問題点を解決する為の手段） 本発明は上記問題点を解決する為のものであり、抄造
原紙に樹脂液を充分含浸した後、更にその上に樹脂液を
クリアコートし、次いで、平滑化処理を施こすことによ
って、印刷適性と紙間強度を同時に満足させる化粧シー
ト用原紙を得るものである。(Means for Solving the Problems) The present invention has been made to solve the above problems, and after sufficiently impregnating the papermaking base paper with the resin solution, further clearcoating the resin solution thereon, and then smoothing The present invention provides a decorative sheet base paper that simultaneously satisfies printability and inter-sheet strength by applying a chemical conversion treatment.
すなわち本発明は、 1.抄造原紙に樹脂液を含浸した含浸紙に、顔料を含有し
ない樹脂液からなるクリアコートを設けた後、スーパー
キャレンダーによる平滑化処理を施すことを特徴とする
化粧シート用原紙。That is, the present invention provides: 1. A decorative sheet characterized by performing a smoothing treatment by a super calender after providing a clear coat made of a resin liquid containing no pigment on an impregnated paper obtained by impregnating a resin paper into a papermaking base paper. Base paper.
2.化粧シート用原紙の紙間剥離強度を200g/15mm以上か
つ平滑度を300秒以上とすることを特徴とする特許請求
の範囲第１項記載の化粧シート用原紙。2. The base sheet for decorative sheet according to claim 1, wherein the base sheet for decorative sheet has a peel strength between sheets of 200 g / 15 mm or more and a smoothness of 300 seconds or more.
3.化粧シート用原紙の平滑度を450秒以上とすることを
特徴とする特許請求の範囲第２項記載の化粧シート用原
紙。3. The decorative sheet base paper according to claim 2, wherein the smoothness of the base sheet for decorative sheet is 450 seconds or more.
である。It is.
本発明によるクリアコートは更に平滑度が上がりやす
くなるのみならず、印刷インキの紙層への浸み込みを押
える為、鮮明な色調の印刷が得られるという利点があ
る。The clear coat according to the present invention has the advantage that not only the smoothness can be easily increased but also the printing ink can be prevented from penetrating into the paper layer, so that printing of a clear color tone can be obtained.
本発明で用いられる抄造原紙は、天然繊維を主体とし
必要ならば、化学繊維等を加えた繊維に顔料，紙力増強
剤，歩留向上剤及びその他の製紙助剤を加えた紙料を抄
紙機で抄造したもので、含浸性を損なわないように、比
較的低密度のものが好ましい。The papermaking base paper used in the present invention is made of a natural fiber and, if necessary, a paper stock obtained by adding a pigment, a paper strength enhancer, a retention aid, and other papermaking aids to a fiber containing a chemical fiber or the like. It is preferably made by a machine and has a relatively low density so as not to impair the impregnation.
本発明において、含浸剤として用いられる含浸樹脂液
としては、樹脂の水分散体あるいは有機溶剤溶液が用い
られ、（１）水分散体としては、アクリル系エマルジョ
ン，酢ビ系エマルジョン，合成ゴム系エマルジョンより
選ばれる１種もしくは２種以上の樹脂エマルジョン混合
液又は更にこれと熱硬化性樹脂エマルジョン又は有機溶
媒溶液との混合液が挙げられ、又、（２）有機溶剤溶液
としてはアクリル系樹脂及び合成ゴム系樹脂より選ばれ
る１種もしくは２種以上の樹脂又はこれと熱硬化性樹脂
との混合物を有機溶剤で溶解した溶液が挙げられる。In the present invention, an aqueous resin dispersion or an organic solvent solution is used as the impregnating resin liquid used as the impregnating agent. (1) The aqueous dispersion may be an acrylic emulsion, a vinyl acetate emulsion, or a synthetic rubber emulsion. A liquid mixture of one or more resin emulsions selected from the group consisting of a resin emulsion and a liquid mixture of the resin emulsion and a thermosetting resin emulsion or an organic solvent solution. A solution obtained by dissolving one or more resins selected from rubber-based resins or a mixture of the same and a thermosetting resin with an organic solvent may be used.
これを抄造原紙100部に対し、固形分で10部〜100部、
好ましくは15〜80部を含浸する。含浸率が10部未満であ
ると紙間強度が弱くなる。含浸率を高くする為には含浸
液濃度を上げる必要があるが、濃度を例えば50重量％以
上に上げると、含浸剤が原紙に浸透しにくくなり、又、
含浸率が100部より高くなると、カレンダー効果が低く
なり平滑度が高くなりにくくなり、結果として印刷適性
が不充分となる。Based on 100 parts of papermaking base paper, 10 to 100 parts in solid content,
Preferably 15 to 80 parts are impregnated. If the impregnation rate is less than 10 parts, the inter-sheet strength becomes weak. In order to increase the impregnation rate, it is necessary to increase the concentration of the impregnating solution. However, if the concentration is increased to, for example, 50% by weight or more, the impregnating agent hardly penetrates the base paper,
When the impregnation ratio is higher than 100 parts, the calender effect is reduced and the smoothness is hardly increased, and as a result, the printability becomes insufficient.
次に含浸紙にクリアコートする樹脂液としては 水分散体としてのアクリル系エマルジョン，酢ビ系
エマルジョン，合成ゴム系エマルジョンより選ばれる１
種もしくは２種以上の樹脂又はこれと熱硬化性樹脂との
混合物あるいは 有機溶剤溶液としてのアクリル系樹脂及び合成ゴム
系樹脂より選ばれる１種もしくは２種以上の樹脂又はこ
れらと熱硬化性樹脂エマルジョン又は溶液との混合物が
用いられる。Next, the resin liquid to be clear-coated on the impregnated paper is selected from an acrylic emulsion, a vinyl acetate emulsion, and a synthetic rubber emulsion as an aqueous dispersion.
One or more resins selected from acrylic resins and synthetic rubber resins as a solvent or a mixture of two or more resins or a thermosetting resin and an organic solvent solution, or a thermosetting resin emulsion with them Alternatively, a mixture with a solution is used.
クリアコート樹脂としては、ブロッキングを防止する
為、ガラス転移温度（Tg）が０℃以上、好ましくは20℃
以上のものが好ましい。The clear coat resin has a glass transition temperature (Tg) of 0 ° C. or higher, preferably 20 ° C. to prevent blocking.
The above are preferred.
これを固形分で3g/m2〜30g/m2、好ましくは5g/m2〜20
g/m2塗工する。塗工量が少なすぎると平滑度が不充分で
あり、又、逆に30g/m2より多くしてもその効果は向上せ
ず、経済性を考慮すると30g/m2以上は不要である。This 3g / m 2 ~30g / m 2 in terms of solid content, preferably 5 g / m 2 to 20
g / m 2 coating. If the coating amount is too small, the smoothness will be insufficient, and if it is more than 30 g / m 2, the effect will not be improved, and 30 g / m 2 or more is unnecessary in consideration of economy.
本発明においては、平滑化処理の前に水分付与工程を
入れてもよい。６〜８％の水分を持たせることにより、
平滑化処理がスムーズに行なわれる。平滑化処理の典型
的な方法としてスーパーキャレンダー処理がある。上記
の樹脂塗工・乾燥後この処理を行うことにより、ベック
平滑度で300秒以上にすることができ、優れた印刷適性
が付与される。In the present invention, a moisture imparting step may be inserted before the smoothing treatment. By having 6-8% moisture,
The smoothing process is performed smoothly. A super calender process is a typical method of the smoothing process. By performing this treatment after the above-mentioned resin coating and drying, the Bekk smoothness can be made 300 seconds or more, and excellent printability is imparted.
（発明の効果） 本発明の化粧板原紙は、樹脂を充分量含浸している為
紙間強度が強く、また、表面に樹脂をクリアコートし平
滑化処理を施してある為、平滑度が高く、印刷時に白抜
けが少なく、さらに印刷インキの紙層への浸み込みが少
なく、結果として鮮明な色調の印刷が得られる。(Effect of the Invention) The decorative paper base paper of the present invention has a high inter-sheet strength because it is impregnated with a sufficient amount of resin, and has a high smoothness because the surface is clear-coated with a resin and subjected to a smoothing treatment. In addition, there is little white spots during printing, and there is little penetration of the printing ink into the paper layer. As a result, printing with a clear color tone can be obtained.
実施例１ 広葉樹晒クラフトパルプからなる紙料を叩解度25゜SR
に叩解し、二酸化チタン５部，赤色系顔料１部，カーボ
ンブラック0.01部を添加しさらに、製紙用助剤を添加し
て米坪量50g/m2の原紙を抄造した。得られた原紙100部
に対し、ポリアクリル酸エステルエマルジョンを固形分
として45部を含浸し、乾燥し、次いでTg 35℃のポリア
クリル酸エステルエマルジョンを固形分で20g/m2塗工し
た。次いでスーパーキャレンダーにより表面平滑化を施
こしたところ、平滑度600秒で紙間剥離強度350g/15mmの
化粧シート用原紙が得られた。これに木目柄をグラビア
印刷したところきわめて鮮明で美しい印刷物が得られ
た。Example 1 Hardwood bleached kraft pulp was beaten at 25 ° SR
Then, 5 parts of titanium dioxide, 1 part of a red pigment, and 0.01 part of carbon black were added, and further, a papermaking aid was added to produce a base paper having a rice basis weight of 50 g / m 2 . 100 parts of the obtained base paper was impregnated with 45 parts of a polyacrylic ester emulsion as a solid content, dried, and then coated with a polyacrylic ester emulsion having a Tg of 35 ° C. at a solid content of 20 g / m 2 . Next, when the surface was smoothed by a super calender, a base paper for decorative sheet having a smoothness of 600 seconds and an inter-sheet peel strength of 350 g / 15 mm was obtained. Gravure printing of a wood grain pattern on this resulted in a very clear and beautiful printed matter.
実施例２ 広葉樹晒クラフトパルプ80、針葉樹晒クラフトパルプ
20部からなる紙料を叩解度23゜SRに叩解し二酸化チタン
20部，赤色系顔料0.3部，黄色系顔料0.8部を添加し、さ
らに、製紙用助剤を添加して米坪量70g/m2の原紙を抄造
した。得られた原紙100部に対し、ポリアクリル酸エス
テルエマルジョン，メチルメタアクリレート・ブタジエ
ン共重合体エマルジョン及びメラミン樹脂を固形分でそ
れぞれ60:30:10の比率で配合したものを固形分で35部に
なるように含浸した。Example 2 Hardwood bleached kraft pulp 80, softwood bleached kraft pulp
20 parts of stock is beaten to 23 ° SR with titanium dioxide
20 parts, 0.3 parts of a red pigment and 0.8 parts of a yellow pigment were added, and further, a papermaking aid was added to produce a base paper having a basis weight of 70 g / m 2 . To 100 parts of the obtained base paper, a mixture of a polyacrylate emulsion, a methyl methacrylate / butadiene copolymer emulsion, and a melamine resin at a solid content ratio of 60:30:10 was added to a solid content of 35 parts. Impregnation.
次にTg 25℃のポリアクリル酸エステルエマルジョン
及びメラミン樹脂を固形分で、95:5の比率で配合したも
のを固形分で15g/m2塗工した。これに調湿工程をへて水
分を６％付与しスーパーキャレンダーにより平滑度を50
0秒にした。得られた化粧シートは紙間剥離強度が320g/
15mmであり、これに木目柄をグラビア印刷したところ優
れた印刷物が得られた。Next, a mixture of a polyacrylate emulsion having a Tg of 25 ° C. and a melamine resin in a solid content of 95: 5 was applied at a solid content of 15 g / m 2 . A 6% water content was added to this through a humidity control process, and the smoothness was adjusted to 50 with a super calender.
0 seconds. The obtained decorative sheet has a peel strength between sheets of 320 g /
When the grain pattern was gravure printed thereon, an excellent printed matter was obtained.
実施例３ 実施例１で得られた抄造原紙に実施例２に示したよう
に、含浸剤を含浸し、さらにTg 25℃のポリアクリル酸
エステルエマルジョン及びメラミン樹脂を固形分で、9
5:5の比率で配合したものを表−１に示した塗工量を塗
工した。Example 3 As shown in Example 2, the papermaking base paper obtained in Example 1 was impregnated with an impregnating agent, and a polyacrylic acid ester emulsion and a melamine resin having a Tg of 25 ° C. were added in a solid content of 9%.
The composition blended at a ratio of 5: 5 was applied in the coating amount shown in Table 1.
これに調湿工程をへて水分を８％付与しスーパーキャ
レンダー処理を行なった。This was subjected to a humidity control step to give 8% of water, and a super calender treatment was performed.
平滑度，印刷適性及び紙間剥離強度は表−１の通りで
あった。Table 1 shows the smoothness, printability and inter-paper peel strength.
実施例４ 実施例２で得られた抄造原紙100部に対しポリアクリ
ル酸エステルの酢酸エステル溶液を固形分で70部になる
ように含浸し、次いでTgが75℃のアクリル酸エステル−
スチレン共重合体の酢酸エチル溶液を固形分で10g/m2塗
工した。 Example 4 100 parts of the papermaking base paper obtained in Example 2 was impregnated with a polyacrylate ester acetate solution at a solid content of 70 parts, and then an acrylate ester having a Tg of 75 ° C.
An ethyl acetate solution of the styrene copolymer was applied at a solid content of 10 g / m 2 .
その後水分が７％になるように調湿し、スーパーキャ
レンダーを施して平滑度を400秒にした。得られた化粧
シート用原紙は紙間剥離強度が400g/15mmであり、非常
に強く、これに木目柄をグラビア印刷したところ印刷適
性の優れた印刷物が得られた。Thereafter, the mixture was conditioned so that the water content became 7%, and a super calender was applied to adjust the smoothness to 400 seconds. The obtained base paper for decorative sheet had an inter-sheet peel strength of 400 g / 15 mm, which was very strong, and a gravure printing of a grain pattern was performed thereon, thereby obtaining a printed matter having excellent printability.
Claims (3)
料を含有しない樹脂液からなるクリアコートを設けた
後、スーパーキャレンダーによる平滑化処理を施すこと
を特徴とする化粧シート用原紙。1. A base paper for a decorative sheet, comprising: providing a clear coat made of a resin liquid containing no pigment on an impregnated paper obtained by impregnating a paper base paper with a resin liquid, and then performing a smoothing treatment by a super calender. .
5mm以上かつ平滑度を300秒以上とすることを特徴とする
特許請求の範囲第１項記載の化粧シート用原紙。2. The paper-to-paper peel strength of a base paper for a decorative sheet is 200 g / 1.
2. The base paper for decorative sheet according to claim 1, wherein the base paper has a smoothness of 5 mm or more and a smoothness of 300 seconds or more.
することを特徴とする特許請求の範囲第２項記載の化粧
シート用原紙。3. The base paper for decorative sheets according to claim 2, wherein the smoothness of the base paper for decorative sheets is 450 seconds or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62015221A JP2612441B2 (en) | 1987-01-27 | 1987-01-27 | Base paper for decorative sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62015221A JP2612441B2 (en) | 1987-01-27 | 1987-01-27 | Base paper for decorative sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63190092A JPS63190092A (en) | 1988-08-05 |
| JP2612441B2 true JP2612441B2 (en) | 1997-05-21 |
Family
ID=11882811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62015221A Expired - Fee Related JP2612441B2 (en) | 1987-01-27 | 1987-01-27 | Base paper for decorative sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2612441B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006231709A (en) * | 2005-02-25 | 2006-09-07 | Sumitomo Bakelite Co Ltd | Method for producing prepreg for decorative layer and decorative panel |
| JP4694910B2 (en) * | 2005-07-20 | 2011-06-08 | サカエグラビヤ印刷株式会社 | Decorative printing paper |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5633951A (en) * | 1979-08-28 | 1981-04-04 | Toppan Printing Co Ltd | Paper containing synthetic resin and its use |
| JPS57117699A (en) * | 1981-01-16 | 1982-07-22 | Chiyoda Gravure Printing | Production of decorative material |
| JPS6175900A (en) * | 1984-09-17 | 1986-04-18 | 凸版印刷株式会社 | Production of reinforced paper |
-
1987
- 1987-01-27 JP JP62015221A patent/JP2612441B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63190092A (en) | 1988-08-05 |
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