JPH0327678B2 - - Google Patents
Info
- Publication number
- JPH0327678B2 JPH0327678B2 JP19417484A JP19417484A JPH0327678B2 JP H0327678 B2 JPH0327678 B2 JP H0327678B2 JP 19417484 A JP19417484 A JP 19417484A JP 19417484 A JP19417484 A JP 19417484A JP H0327678 B2 JPH0327678 B2 JP H0327678B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- resin
- decorative
- weight
- impregnating
- 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
Links
- 229920005989 resin Polymers 0.000 claims description 22
- 239000011347 resin Substances 0.000 claims description 22
- 229920000877 Melamine resin Polymers 0.000 claims description 15
- 239000004640 Melamine resin Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 9
- 229920000178 Acrylic resin Polymers 0.000 claims description 8
- 239000004925 Acrylic resin Substances 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 5
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 2
- 239000011118 polyvinyl acetate Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007754 air knife coating Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Paper (AREA)
- Laminated Bodies (AREA)
Description
(産業上の利用分野)
本発明は、合板、パーチクルボード基板等に貼
り合せて家具、内装材等に使用する強化紙の製造
方法に関するものである。
(従来の技術)
合板、パーチクルボード等を基板とした合成樹
脂化粧板は、基板の表面にメラミン樹脂、尿素樹
脂、フエノール樹脂等を含浸した化粧紙、または
同じく不飽和ポリエステル樹脂を含浸または塗装
した化粧紙を当てて加熱加圧し、一体化して化粧
板としたものが従来より使用されている。
近年これらに加えて、フイニツシユドフオイル
と称される、予め化粧紙に樹脂含浸を施して紙間
を強化し、必要に応じてトツプコートを施したも
のが製造されており、これは基板へラミネートす
るだけで化粧板となるもので、ラミネート時の工
程が非常に簡略化できるものである。
一般にこれらのフイニツシユドフオイルを作る
方法としては、浸透性の良好な紙に印刷を施した
後にアクリル系樹脂とメラミン樹脂の混合液を含
浸、乾燥する方法が取られている。すなわち、比
較的柔軟性のあるアクリル樹脂と、硬度及び浸透
性を有するメラミン樹脂とを一定の割合で混合す
ることによつて、一定の柔軟性と紙間強度を有し
た強化紙を作ることよりなるものである。
(発明が解決しようとする問題点)
メラミン樹脂や尿素樹脂を含浸した化粧紙を基
板の表面に当てて加熱加圧する方法は、化粧板作
製時に多くの工程及び費用、特別の装置を要する
という欠点を有している。
又、フイニツシユドフオイルを用いる方法は、
アクリル系樹脂とメラミン系樹脂の混合樹脂が紙
質表面に出ている為、メラミンの架橋が経時で進
行して一定期間以上経過すると、基板へのラミネ
ートが通常の酢酸ビニル系接着剤では不可能とな
ると言う致命的な欠点を有する。又メラミンの硬
化の進行によつて紙質がもろくなり、貼り合せ時
や後加工時に紙切れ等の問題が発生するという欠
点をも有する。又、これらの問題を解決する為に
アクリル樹脂に対するメラミン樹脂の混合比率を
下げて架橋性を低下させて行く方法も取りうる
が、その場合には樹脂の紙への浸透性の低下、及
び樹脂自体の強度の低下の為、強化紙としての充
分な紙間強度は得られなくなる。また、アクリル
樹脂を多くした場合には紙質が柔軟になり過ぎ、
基材への貼着時に基材の表面の凹凸が化粧板表面
に発生する、いわゆる「目ヤセ」が生じやすくな
る。
本発明は以上のような従来技術の欠点を解消
し、経時による接着適性の低下を改良した強化紙
の製造方法を提供するものである。
(問題点を解決するための手段)
本発明の構成は、浸透性の良好な化粧原紙もし
くは化粧紙にアクリル系樹脂エマルジヨンとメラ
ミン樹脂混合液を含浸して強化紙を製造する方法
において当該樹脂混合液に、平均粒径20μ以上の
ポリ酢酸ビニル系樹脂エマルジヨンを前記混合液
の固形分100重量部当り固形分にて10〜50重量部
加えた組成物を、化粧原紙もしくは化粧紙の裏面
より塗布含浸することを特徴とする強化紙の製造
方法である。
以下本発明を更に詳細に説明する。
浸透性の良好な化粧紙又は化粧原紙としては、
サイズ度5秒以下のチタン紙、無サイズ紙等に印
刷柄を施した化粧紙あるいは印刷を施す前の化粧
原紙が使用される。一般に、紙の坪量としては建
材用原紙として使用される30〜80g/m2のもので
良いが、水性樹脂を塗布含浸するので、ぬれ強度
が200g/15mm以上あるものが望ましい。本発明
に使用される含浸樹脂は、従来からフイニツシユ
ドフオイルに使用されている含浸性の良好なアク
リルエマルジヨンが、具体的には粒径1μ以下の
アクリルエマルジヨンにアクリル樹脂固形分100
重量部当り架橋剤としての水溶性メラミン樹脂が
固形分にて20〜100重量部加えられた混合液に対
して、該混合液の樹脂固形分100重量部当り、平
均粒径20μ以上のポリ酢酸ビニル系エマルジヨン
樹脂を10〜50重量部加えたものを、水等で10セン
チポイズ〜500センチポイズ程度の任意の粘度に
希釈したものよりなる。
本発明は以上のような含浸樹脂を前記の浸透性
の良好な化粧紙又は化粧原紙の裏面より、紙の重
量100重量部当り樹脂固形分にて50〜200重量部塗
布含浸することよりなる。塗布方法としては、グ
ラビアコート、ロールコート、エアーナイフコー
ト等公知の方法が選択できる。
なお、本発明方法によつて得られる強化紙は、
必要に応じて後工程において公知の方法で印刷、
及びトツプコート等の後加工を行うことも任意で
ある。
(作 用)
本発明は以上のような化粧紙又は化粧原紙への
裏面よりの樹脂含浸によつて、粒径の小さなアク
リルエマルジヨン樹脂とメラミン樹脂が紙の内部
に迄浸透し、裏面外層には紙に粒径の大きい酢酸
ビニル系樹脂を主体とした樹脂層が形成される。
(効 果)
本発明は以上のような構成及び作用よりなるの
で、以下のような効果を有する。
裏面に酢酸ビニル系樹脂を主体とした層がで
きるので、樹脂を塗布含浸してから長時間経過
後でも酢酸ビニル系樹脂にて基材への接着が可
能である。
裏面に酢酸ビニル系樹脂を主体とした層がで
きているので、経時により紙層内部のメラミン
が架橋して紙が硬くなつても、メラミン、アク
リルエマルジヨンだけで含浸したものに比して
紙切れ等の紙質の脆化が少なく、取り扱い上極
めて有利である。
紙間内部にはメラミン樹脂、及びアクリル樹
脂が含浸されている為、通常のフイニツシユド
フオイルと同等の充分な紙間強度及び表面性能
を有する。
(実施例)
坪量80g/m2のチタン紙(サイズ度2秒)に表
−1に示す処方の組成物をエアーナイフコーター
を使用し、紙の裏面より樹脂固型分が80g/m2と
なる様に塗布含浸した。
(Industrial Application Field) The present invention relates to a method for producing reinforced paper that is used for furniture, interior decoration materials, etc. by being bonded to plywood, particle board substrates, etc. (Prior art) Synthetic resin decorative boards using plywood, particle board, etc. as substrates are decorative paper impregnated with melamine resin, urea resin, phenol resin, etc. on the surface of the substrate, or decorative paper impregnated with or painted with unsaturated polyester resin. Conventionally, decorative boards have been used by applying paper and applying heat and pressure to form a single piece. In recent years, in addition to these, a type of decorative paper called ``Finished Oil'' has been manufactured in which decorative paper is impregnated with resin in advance to strengthen the paper spacing, and if necessary, a top coat is applied. It becomes a decorative board just by laminating it, which greatly simplifies the lamination process. Generally, the method for making these finishing oils is to print on paper with good permeability, then impregnate it with a mixture of acrylic resin and melamine resin, and dry it. In other words, by mixing a relatively flexible acrylic resin and a hard and permeable melamine resin at a certain ratio, a reinforced paper with a certain flexibility and interpaper strength is made. It is what it is. (Problems to be Solved by the Invention) The method of applying decorative paper impregnated with melamine resin or urea resin to the surface of the substrate and applying heat and pressure has the drawback that it requires many steps, costs, and special equipment when producing the decorative board. have. In addition, the method of using Finnish Dofu oil is as follows:
Since the mixed resin of acrylic resin and melamine resin is exposed on the surface of the paper, crosslinking of the melamine progresses over time, and after a certain period of time, it becomes impossible to laminate the paper to the substrate using ordinary vinyl acetate adhesive. It has a fatal flaw. Further, as the melamine hardens, the paper becomes brittle, resulting in problems such as paper breakage during lamination or post-processing. In addition, in order to solve these problems, it is possible to reduce the crosslinking property by lowering the mixing ratio of melamine resin to acrylic resin. Due to the decrease in the strength of the paper itself, it is no longer possible to obtain sufficient inter-sheet strength as a reinforced paper. Also, if the amount of acrylic resin is increased, the paper quality will become too flexible.
When it is attached to a base material, irregularities on the surface of the base material occur on the surface of the decorative board, which tends to cause so-called "eye discoloration". The present invention solves the above-mentioned drawbacks of the prior art and provides a method for producing reinforced paper that improves the deterioration of adhesion suitability over time. (Means for Solving the Problems) The structure of the present invention is such that in a method of manufacturing reinforced paper by impregnating decorative base paper or decorative paper with good permeability with a mixed solution of acrylic resin emulsion and melamine resin, the resin is mixed. A composition in which 10 to 50 parts by weight of a polyvinyl acetate resin emulsion with an average particle size of 20 μ or more is added to the liquid in terms of solid content per 100 parts by weight of the solid content of the mixed liquid is applied from the back side of the decorative base paper or decorative paper. This is a method for producing reinforced paper characterized by impregnation. The present invention will be explained in more detail below. As decorative paper or base paper with good permeability,
Decorative paper with a printed pattern on titanium paper with a size degree of 5 seconds or less, non-size paper, etc., or decorative base paper before printing is used. In general, the basis weight of the paper may be 30 to 80 g/ m2 , which is used as base paper for building materials, but since it is coated and impregnated with a water-based resin, it is desirable that the paper has a wet strength of 200 g/15 mm or more. The impregnating resin used in the present invention is an acrylic emulsion with good impregnating properties that has been conventionally used for finishing oils.
Polyacetic acid with an average particle size of 20μ or more per 100 parts by weight of resin solid content of the mixed solution to which 20 to 100 parts by weight of water-soluble melamine resin as a crosslinking agent is added per part by weight It is made by adding 10 to 50 parts by weight of a vinyl emulsion resin and diluting it with water or the like to a desired viscosity of about 10 centipoise to 500 centipoise. The present invention consists of applying and impregnating the above-described impregnating resin from the back side of the decorative paper or decorative base paper with good permeability at a resin solid content of 50 to 200 parts by weight per 100 parts by weight of the paper. As the coating method, known methods such as gravure coating, roll coating, and air knife coating can be selected. In addition, the reinforced paper obtained by the method of the present invention is
If necessary, print using a known method in the post-process,
It is also optional to perform post-processing such as top coating. (Function) By impregnating decorative paper or decorative base paper with resin from the back side as described above, the acrylic emulsion resin and melamine resin with small particle sizes penetrate into the inside of the paper and form the outer layer on the back side. A resin layer mainly composed of vinyl acetate resin with large particle size is formed on the paper. (Effects) Since the present invention has the above configuration and operation, it has the following effects. Since a layer mainly made of vinyl acetate resin is formed on the back surface, it is possible to adhere to the base material with the vinyl acetate resin even after a long period of time has passed after coating and impregnating the resin. Since there is a layer mainly made of vinyl acetate resin on the back side, even if the melamine inside the paper layer crosslinks over time and the paper becomes hard, it will not break easily compared to paper impregnated with only melamine and acrylic emulsion. The paper quality is less likely to become brittle, making it extremely convenient to handle. Since the inside of the paper is impregnated with melamine resin and acrylic resin, it has sufficient paper strength and surface performance equivalent to ordinary finishing oil. (Example) Using an air knife coater, the composition shown in Table 1 was applied to titanium paper (size degree: 2 seconds) with a basis weight of 80 g/m 2 , and the resin solid content was 80 g/m 2 from the back side of the paper. It was coated and impregnated so that
【表】
比較の為に、同じ紙に表−2に示す処方の組成
物をエアーナイフコーターを使用し、裏面より樹
脂固型分が80g/m2となる様に塗布含浸した。[Table] For comparison, the same paper was coated with the composition shown in Table 2 using an air knife coater so that the resin solid content was 80 g/m 2 from the back side.
【表】
以上のようにして得られた2種類の強化紙を、
塗布含浸後24時間経過してから各々の表面にアク
リルウレタン樹脂を15g/m2(固形分)塗布し、
表−3に示すような各種試験を行なつた。[Table] The two types of reinforced paper obtained as described above are
24 hours after application and impregnation, 15g/m 2 (solid content) of acrylic urethane resin was applied to each surface.
Various tests as shown in Table 3 were conducted.
【表】【table】
Claims (1)
クリル系樹脂エマルジヨンとメラミン樹脂混合液
を含浸して強化紙を製造する方法において、当該
樹脂混合液に、平均粒径20μ以上のポリ酢酸ビニ
ル系樹脂エマルジヨンを前記混合液の固形分100
重量部当り固形分にて10〜50重量部加えた組成物
を、化粧原紙もしくは化粧紙の裏面より塗布含浸
することを特徴とする強化紙の製造方法。1. In a method of manufacturing reinforced paper by impregnating decorative base paper or decorative paper with good permeability with a mixture of acrylic resin emulsion and melamine resin, a polyvinyl acetate resin with an average particle size of 20μ or more is added to the resin mixture. The solid content of the emulsion is 100%.
A method for producing reinforced paper, which comprises applying and impregnating a composition containing 10 to 50 parts by weight of a solid content per part by weight from the back side of decorative base paper or decorative paper.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19417484A JPS6175900A (en) | 1984-09-17 | 1984-09-17 | Production of reinforced paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19417484A JPS6175900A (en) | 1984-09-17 | 1984-09-17 | Production of reinforced paper |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6175900A JPS6175900A (en) | 1986-04-18 |
JPH0327678B2 true JPH0327678B2 (en) | 1991-04-16 |
Family
ID=16320155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19417484A Granted JPS6175900A (en) | 1984-09-17 | 1984-09-17 | Production of reinforced paper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6175900A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2612441B2 (en) * | 1987-01-27 | 1997-05-21 | 株式会社 興人 | Base paper for decorative sheet |
US5413834A (en) * | 1992-03-31 | 1995-05-09 | Specialty Paperboard/Endura, Inc. | Miter-foldable saturated paper-based overlay system and method for fabricating the same |
-
1984
- 1984-09-17 JP JP19417484A patent/JPS6175900A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6175900A (en) | 1986-04-18 |
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