JPS63211394A - Lightweight cast coat paper - Google Patents
Lightweight cast coat paperInfo
- Publication number
- JPS63211394A JPS63211394A JP62035795A JP3579587A JPS63211394A JP S63211394 A JPS63211394 A JP S63211394A JP 62035795 A JP62035795 A JP 62035795A JP 3579587 A JP3579587 A JP 3579587A JP S63211394 A JPS63211394 A JP S63211394A
- Authority
- JP
- Japan
- Prior art keywords
- cast
- coating
- pigment
- paper
- cast coat
- 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
- 239000011248 coating agent Substances 0.000 claims description 46
- 238000000576 coating method Methods 0.000 claims description 46
- 239000000049 pigment Substances 0.000 claims description 23
- 239000011230 binding agent Substances 0.000 claims description 15
- 230000035699 permeability Effects 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 10
- 239000010410 layer Substances 0.000 description 25
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 14
- 239000007788 liquid Substances 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 10
- 238000005266 casting Methods 0.000 description 10
- 238000001035 drying Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 description 7
- 230000007547 defect Effects 0.000 description 7
- 239000011247 coating layer Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000005995 Aluminium silicate Substances 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 235000012211 aluminium silicate Nutrition 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- -1 f-lotine Polymers 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000001490 Dengue Diseases 0.000 description 1
- 206010012310 Dengue fever Diseases 0.000 description 1
- 241000257465 Echinoidea Species 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 208000025729 dengue disease Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PGZIKUPSQINGKT-UHFFFAOYSA-N dialuminum;dioxido(oxo)silane Chemical compound [Al+3].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O PGZIKUPSQINGKT-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000006081 fluorescent whitening agent Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 239000012169 petroleum derived wax Substances 0.000 description 1
- 235000019381 petroleum wax Nutrition 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000013053 water resistant agent Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Paper (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Color Printing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は＠磁キャストコート紙に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to @magnetic cast coated paper.
（従来の技術）
従来、キャストコート紙は湿潤状態のコーティング層を
加熱ドラム面に圧接して光沢仕上げするウェットキャス
ト法、湿潤状態のコーティング層１＆：ｒル状態にして
加熱ドラム面に圧接して光沢仕上げするｒル化キャスト
法、湿潤状態のコーティング層を一旦乾燥又は半乾燥し
た後再湿潤により可塑化で加熱ドラム面に圧接するリウ
ェツトキャスト法等によりて製造されている。また原紙
上に顔料及び結着剤を主体とする下塗り層を形成した後
に、上塗９層を形成しこの上塗り層が湿潤状態にある間
に加熱ドラム面に圧接して光沢仕上げする方法も提案さ
れている。(Prior art) Conventionally, cast coated paper has been produced using the wet casting method, in which a wet coating layer is pressed against the surface of a heating drum for a glossy finish, or by the wet casting method, in which a wet coating layer is brought into a round state and pressed against the surface of a heating drum. It is manufactured by a rolling casting method that produces a glossy finish, a rewetting casting method that involves drying or semi-drying a wet coating layer, and then rewetting it to plasticize it and press it against the surface of a heated drum. A method has also been proposed in which after forming an undercoat layer consisting mainly of pigments and a binder on base paper, nine layers of topcoat are formed, and this topcoat layer is pressed against the heated drum surface while it is in a wet state to achieve a glossy finish. ing.
（発明が解決しようとする問題点）
これらのキャスト法はいづれも湿潤状態にある顔料及び
結着剤を主成分とするコーティング層を加熱ドラム面に
圧接乾燥後剥離する点で共通しており、塗布量は一般に
１５〜３５ｇ／ｍ２であり、塗工速度は直径３．６ ｍ
のドラムドライヤーを用いた場合５０ ｍ／ｍｉｎ前後
と低速であり、本発明者等が確ｕしたところ、高速で乾
燥するとキャスト表面にピンホール等を生じ不満足な表
面となることが判明した。(Problems to be Solved by the Invention) All of these casting methods have in common that a wet coating layer mainly composed of pigment and a binder is pressed against the surface of a heated drum and then peeled off after drying. The coating amount is generally 15-35 g/m2, and the coating speed is 3.6 m in diameter.
When using a drum dryer, the speed is low at around 50 m/min, and the inventors have confirmed that drying at high speeds causes pinholes and the like on the cast surface, resulting in an unsatisfactory surface.
（問題点を解決するための手段）
本発明者等は表面性良好なキャストコート紙を高速で製
造すべく鋭意検討した結果本発明を完成するに到った。(Means for Solving the Problems) The present inventors have completed the present invention as a result of intensive studies aimed at producing cast-coated paper with good surface properties at high speed.
すなわち９本発明は紙支持体上に顔料及び結着剤を主成
分とするアンダーコート層を豐帝会→豐好ましくは３〜
１０ｇ／ｍ２になる
ように塗設した基紙の透気度（ＪＩＳ Ｐ８１１７）を
３００秒以下とし、該基紙のアンダーコート層上に顔料
、熱可融性物質及び結着剤を主成分とするキャストコー
ト層を乾燥塗布量が０．５〜１０ｇ／ｍ２になるように
塗設することによりで達成芒れる。That is, in the present invention, an undercoat layer containing a pigment and a binder as main components is formed on a paper support by forming an undercoat layer on a paper support.
The air permeability (JIS P8117) of the base paper coated to 10 g/m2 is 300 seconds or less, and the undercoat layer of the base paper is coated with a pigment, a thermofusible substance, and a binder as main components. This can be achieved by applying a cast coat layer with a dry coating amount of 0.5 to 10 g/m2.
アンダーコート層に使用さｎる顔料としては、カオリン
、クレー、炭酸カルシウム、炭酸マグネシウム、酸化マ
グネシウム、酸化チタン、酸化亜鉛、水酸化アルミニウ
ム、硫酸バリウム、メルク。Pigments used in the undercoat layer include kaolin, clay, calcium carbonate, magnesium carbonate, magnesium oxide, titanium oxide, zinc oxide, aluminum hydroxide, barium sulfate, and Merck.
サテンホワイト、硫酸カルシウム、シリカなどの無機顔
料、＆ＩＪスチレン、尿素、ホルムアルデヒド樹脂、デ
ングン粒等の有機顔料が用いられるが、アンダーコート
層を設けた基紙の透気度を３００秒以下とするには吸油
量（ＪＩＳ Ｋ５１０１）が５０２＋１４／１００１以
上の顔料を用いるのが好適であシ、該吸油量５０ゴ／１
００ＩＩ以上の顔料の含有量としてはアンダーコート層
重量に対して１０〜８０重量％であることが望ましい。Inorganic pigments such as satin white, calcium sulfate, and silica, and organic pigments such as &IJ styrene, urea, formaldehyde resin, and dengue grains are used, but if the air permeability of the base paper provided with the undercoat layer is 300 seconds or less, It is preferable to use a pigment with an oil absorption (JIS K5101) of 502+14/1001 or more, and the oil absorption is 50/1.
The content of the pigment of 00II or higher is preferably 10 to 80% by weight based on the weight of the undercoat layer.
１０重量％未満であると透気性が低下し、キャスト塗工
時に水分の蒸発が遅くなシ操業速度が低下したり、キャ
ストコート面にピンホール状の欠陥が発生する。８０重
量％を越えると接着性が悪くなり、キャスト塗工時にド
ラムドライヤーとの剥離が悪くな９ドラムドライヤーに
カスが付層する。When it is less than 10% by weight, air permeability decreases, and the operating speed due to slow evaporation of water during cast coating may decrease, and pinhole-like defects may occur on the cast coating surface. If it exceeds 80% by weight, the adhesion will be poor and peeling from the drum dryer will be poor during cast coating, resulting in deposits on the drum dryer.
又、吸油量５０ ｍｌ ／ Ｉｎ９以上の顔料を用いな
い湯合は通気性が不均一になシ通気性の悪い部分はキャ
ストコート塗液水分の蒸発によってフクレが生じたりピ
ンホール等の欠陥が発生する。吸油量５０ゴ／■以上好
ましくは８０１Ｌｔ／ｍｃｉ以上の顔料を用いることに
より通気性の均一性が保持されキャストコート面の表面
性を良好な状態とすることができる。In addition, if a pigment with an oil absorption of 50 ml/In9 or more is not used, the permeability will be uneven, and in areas with poor permeability, evaporation of water in the cast coat coating will cause blisters and defects such as pinholes. do. By using a pigment with an oil absorption of at least 50 Lt/mci, preferably at least 801 Lt/mci, the uniformity of air permeability can be maintained and the surface properties of the cast coated surface can be kept in a good state.
吸油量５０ｍ／＃以上の好ましい顔料としては例えば以
下のようなものがある。但し、（）内数値は吸油量（ｍ
Ｊ／１００Ｎ）’ｔ’示す。ケイソウ±（１１Ｏ〜２１
０）、焼成ケイソウ±（１３０〜１４０）、融剤焼成ケ
イソウ土（１２０〜１６０）、焼成りレー（５０〜５７
）、天然黒鉛微粉末（５０〜１００）、天然土状黒鉛（
５０〜１２０）、カーボンブラック（ＳＯ〜１５０）、
ホワイトカーボン（５０〜３００）、微粒子状無水シリ
カ（１００〜３００）、微粒子状無水酸化アルミニウム
（１００〜２５０）、微粒子状酸化チタン（５０〜１２
０）、軽質炭酸カルシウム（５０〜８０）、炭酸マグネ
シウム（５０〜１５０）、ケイ酸アルミン酸マグネシウ
ム（３００〜３４０）、顔料を物理的又は化学的に処理
して５０ｍ７１００ｇ以上の吸油量を保持せしめるよう
にしたもの、例えば針柱状炭酸カルシウム粒子を三次元
的に組み合せてウニ状の形状とし吸油ｉｔを６０ｄ／１
０（１以上としたもの。Examples of preferable pigments having an oil absorption amount of 50 m/# or more include the following. However, the numbers in parentheses are oil absorption amount (m
J/100N) 't' indicates. Diatom ±(11O~21
0), Calcined Diatomaceous Earth (130-140), Flux Calcined Diatomaceous Earth (120-160), Calcined Ray (50-57)
), natural graphite fine powder (50-100), natural earthy graphite (
50-120), carbon black (SO-150),
White carbon (50-300), particulate anhydrous silica (100-300), particulate anhydrous aluminum oxide (100-250), particulate titanium oxide (50-12
0), Light calcium carbonate (50-80), Magnesium carbonate (50-150), Magnesium aluminate silicate (300-340), Pigment is physically or chemically treated to retain oil absorption of 50m7100g or more. For example, needle-shaped calcium carbonate particles are three-dimensionally combined to form a sea urchin shape and have an oil absorption rate of 60d/1.
0 (1 or more)
又、アンダーコート層に使用でれる結着剤としては澱粉
、変性澱粉、カゼイン、ｆロチイン、ゼラチン、セルロ
ース類、ポリビニルアルコール。Further, binders that can be used in the undercoat layer include starch, modified starch, casein, f-lotine, gelatin, celluloses, and polyvinyl alcohol.
変性ポリビニルアルコール、スチレ／−ブタノエン共重
合体、スチレン・アクリロニトリル共重合体、スチレン
・アクリル共重合体、ポリアクリルアミド等の各種天然
及び合成の結着剤が水溶液又はラテックス、エマルジョ
ンの形で用いられる。Various natural and synthetic binders such as modified polyvinyl alcohol, styrene/butanoene copolymer, styrene/acrylonitrile copolymer, styrene/acrylic copolymer, and polyacrylamide are used in the form of an aqueous solution, latex, or emulsion.
結着剤は種類によって接着強度が異なるので結着剤量は
画一的ではないが通常塗液固形分の５〜３０重量％程度
使用され、通気性を著しく阻害しない程度に顔料相互間
あるいは原紙またはキャストコート層との接着に必要な
最低蓋で用いるのが良い。The adhesive strength of the binder varies depending on the type, so the amount of the binder is not uniform, but it is usually used in an amount of 5 to 30% by weight of the solid content of the coating liquid, and it is used between the pigments or the base paper to the extent that it does not significantly impede air permeability. Alternatively, it is best to use it with the minimum lid necessary for adhesion with the cast coat layer.
アンダーコート塗液中には必要に応じて分牧剤。Add a grazing agent to the undercoat coating solution as needed.
耐水化剤、消泡剤、防腐剤、染料、熱可融性物質等が適
宜含有し得るものであり、エアナイフコーター、グレー
ドコーター、バーコーター、ロールコータ−、ブラシコ
ーター、グラビアコーターなどの塗工機によって紙支持
体上に乾燥塗布Ｓｋ３〜１０ｇ／ｍ２になるように塗工
され、更に必要に応じてマシンキャレンダー、スーパー
キャレンダー等のキャレンダー処理が施される。アンダ
ーコート塗布量が３９７ｍ”未満であるとキャストコー
ト紙の表面性が悪く、又、１０１ｇ／ｍ２を超えると効
果は向上せず生産性が低下し、経済的にもコストアップ
し、好ましくない。It may contain water-resistant agents, antifoaming agents, preservatives, dyes, thermofusible substances, etc. as appropriate, and is suitable for coating with air knife coaters, grade coaters, bar coaters, roll coaters, brush coaters, gravure coaters, etc. It is coated onto a paper support using a drying machine to a dry coating Sk of 3 to 10 g/m2, and is further calendered using a machine calender, a super calender, etc., if necessary. If the amount of undercoat applied is less than 397 m'', the surface properties of the cast coated paper will be poor, and if it exceeds 101 g/m2, the effect will not improve, productivity will decrease, and the cost will increase economically, which is not preferable.
アンダーコート層を設けた基紙の透気度（ＪＩＳＰ８１
１７）は３００秒以下好ましくは２００秒以下であるこ
とが重要であり、３００秒を超えて通気性が悪くなると
塗工速度を低下させないと、十分乾燥できず更にはキャ
ストコート表面にピンホール等の欠陥が出来表面性が損
われる。Air permeability of base paper with undercoat layer (JISP81
17) It is important that the time is 300 seconds or less, preferably 200 seconds or less; if the time exceeds 300 seconds and the air permeability deteriorates, the coating speed must be reduced or it will not be sufficiently dry and furthermore pinholes etc. will occur on the cast coat surface. Defects are formed and the surface quality is impaired.
キャストコート層に用いられる顔料・結着剤としては前
述のアンダーコート層と同じものが使用できる。熱可塑
性物質としてはステアリン酸亜鉛。The pigments and binders used in the cast coat layer can be the same as those used in the undercoat layer described above. Zinc stearate is a thermoplastic.
ステアリン酸カルシウム等の金属石ケン、カルナバワッ
クス、みつろう、モンタンワックス等の天然ワックス、
パラフィンワックス、マイクロワックス等の石油ワック
ス、ポリエチレンワックス。Metal soaps such as calcium stearate, natural waxes such as carnauba wax, beeswax, and montan wax,
Petroleum wax such as paraffin wax and micro wax, polyethylene wax.
脂肪酸アミド、脂肪酸エステル等の合成物が使用できる
。Synthetic products such as fatty acid amides and fatty acid esters can be used.
顔料、熱可融性物質、結着剤の使用ｔは夫々使用する薬
品の種類によって性質が異なるので画一的ではないが、
通常、キャストコート塗液組成は乾燥重量として顔料は
２０〜６０重量％、熱可融性物質は１０〜５０重量％、
結着剤は１０〜４０重量うのものが使用される。顔料は
インク受理性、光沢度等を考慮して種類・使用ｉｔ決足
するが２０重Ｊｉ％より少ないとインク受理性が悪くな
り、５０重ｆｊｋ％より多過ぎると表面性が悪くなる。The use of pigments, thermofusible substances, and binders is not uniform, as their properties vary depending on the type of chemicals used.
Usually, the composition of the cast coat coating liquid is as follows: pigment is 20 to 60% by weight, thermofusible substance is 10 to 50% by weight,
The binder used has a weight of 10 to 40%. The type and use of pigments are determined in consideration of ink receptivity, gloss, etc., but if the amount is less than 20 wt.Ji%, the ink receptivity will be poor, and if it is more than 50 wt.fjk%, the surface properties will be poor.
熱可融性物質は湿潤状態で加熱ドラム面に圧接・乾燥さ
れるときキャストコート層の可塑性を増し、低塗布量で
も充分良好なキャスト表面が得られる。When the thermofusible substance is pressed against the heating drum surface in a wet state and dried, it increases the plasticity of the cast coating layer, and a sufficiently good cast surface can be obtained even with a low coating amount.
熱可融性物質が１０重音量より少ないとその効果が不充
分となり表面性が悪くなり、５０重量％より多過ぎると
インク受理性等が悪くなる。If the amount of the thermofusible substance is less than 10% by weight, the effect will be insufficient and surface properties will deteriorate, and if it is more than 50% by weight, ink receptivity will deteriorate.
結着剤は顔料、熱可融性物質の残余であり、各成分を互
いに接着し、アンダーコート層との接着をするに充分な
量が用いられる。The binder is the remainder of the pigment, thermofusible material, and is used in an amount sufficient to adhere the components to each other and to the undercoat layer.
螢光顔料、螢光増白剤等が適宜含有し得るものであり、
ウェットキャスト法、リウェツトキャスト法、デル化キ
ャスト法等のキャスト法によりて乾燥塗布量０．５〜１
０ｇ／ｍ２になるように塗工される。キャストコート塗
布置が０．５１／ｍ２未満ではアンダーコート層表面を
埋めきれず表面性が不充分とな９．１０７ｇ／ｍ２以上
では乾燥に時間がかかり塗工速度が低下する。It may contain a fluorescent pigment, a fluorescent whitening agent, etc. as appropriate,
Dry coating amount is 0.5 to 1 by casting methods such as wet casting method, rewetting casting method, delta casting method, etc.
It is coated so that it is 0g/m2. If the cast coating thickness is less than 0.51 g/m2, the surface of the undercoat layer will not be completely filled and the surface properties will be insufficient.If it is more than 9.107 g/m2, it will take a long time to dry and the coating speed will decrease.
（作用及び効果）
本発明のように、紙支持体上に顔料、結着剤を主成分と
す仝アンダーコート層を設けた基紙の透気度を３００秒
以下とし、該基紙上に顔料、熱可融性物質、Ｖｊ着剤を
主成分とするキャストコート層を設けることにより、コ
ート層の塗布量が１５、！ｉ’／ｍ”以下の表面性良好
な＠量キャストコート紙を得ることができ、塗工速度を
著しく高めることができる。(Functions and Effects) According to the present invention, the air permeability of the base paper provided with an undercoat layer mainly composed of a pigment and a binder on a paper support is set to 300 seconds or less, and the pigment is By providing a cast coat layer mainly composed of a thermofusible substance and a Vj adhesive, the coating amount of the coat layer can be reduced to 15! It is possible to obtain cast-coated paper with good surface properties of i'/m'' or less, and the coating speed can be significantly increased.
すなわち、本発明はアンダーコート層を設けることによ
りキャストコート表面を良好にするものであり、その際
基紙の透気度を３００秒以下とすることによりキャスト
コート塗液の水分が基紙を通過して裏面より蒸発するの
を促進して乾燥性を高めたものであり、更にはキャスト
コート層中に含有した熱可融性物質の可塑性増加効果に
よりキャストコート層の低塗布量化を達成し、乾燥性の
良好な軽量キャストコート紙を提供できるに到ったもの
である。That is, the present invention improves the cast coat surface by providing an undercoat layer, and in this case, by setting the air permeability of the base paper to 300 seconds or less, water in the cast coat coating liquid passes through the base paper. This material promotes evaporation from the back side and improves drying properties.Furthermore, by increasing the plasticity of the thermofusible substance contained in the cast coat layer, it achieves a low coating amount of the cast coat layer. It has now been possible to provide lightweight cast-coated paper with good drying properties.
本発明の軽量キャストコート紙は印刷用紙に用いられる
だけでなく、アンダーコート層あるいはキャスト層に用
いる薬品を工夫することにょシ熱転写受容シート、感圧
受容シート、感熱記録シート、インクジェット用記録紙
磁気記録シート用原紙等の情報関連用紙、化粧シート等
への応用が可能であり非常に有用な技術と考えられる。The lightweight cast-coated paper of the present invention can be used not only for printing paper, but also for thermal transfer receptor sheets, pressure-sensitive receptor sheets, thermal recording sheets, inkjet recording paper, magnetic This technology can be applied to information-related paper such as base paper for recording sheets, decorative sheets, etc., and is considered to be a very useful technology.
（実施例）
次に本発明を実施例によってざらに具体的に説明するが
、本発明はこれらの実施例の記載に限定されるものでは
ない。実施例中の部は固形分の重置部を示す。(Examples) Next, the present invention will be roughly and concretely explained using Examples, but the present invention is not limited to the description of these Examples. The parts in the examples indicate the overlapping parts of the solid content.
実施例１
ケ≠ソウ土（セライトスーパークロス吸油量１２５：ゾ
ヲンズマンビル社製）４０服軽質炭酸カルシウム（ソネ
ックスＥ吸油量４０：白石工業■製）３０部、酸化澱粉
（ＭＳ・３８００ Ｂ本食品■製）１５ｍ、変性アクリ
ル樹脂エマルジ璽ン（モビニールＬ−８０１０：ヘキス
ト合成■ｆｉ）１５部からなる固形分濃度３５％のアン
ダーコート塗液を調製した。Example 1 KE≠Sow earth (Celite Super Cross oil absorption 125: manufactured by Zowons Manville) 40 parts Light calcium carbonate (Sonex E oil absorption 40: manufactured by Shiraishi Kogyo ■) 30 parts Oxidized starch (MS 3800 B Hon Foods manufactured by ■) ) and 15 parts of a modified acrylic resin emulsion bottle (Movinyl L-8010: Hoechst Synthesis ■fi) with a solid content concentration of 35% was prepared.
カオリン４０部、軽質炭酸カルシウム２０部、ステアリ
ン酸亜鉛１５部、ポリビニルアルコール１０部、変性ア
クリル樹脂エマルノ冒ン１５部からなる固形分濃度３０
％のキャストコート塗液を調製した。Solid content concentration: 30 parts consisting of 40 parts of kaolin, 20 parts of light calcium carbonate, 15 parts of zinc stearate, 10 parts of polyvinyl alcohol, and 15 parts of modified acrylic resin
% cast coat coating liquid was prepared.
第１図に示す装置を用いて、５０ｇ／ｍ２の原紙にアン
ダーコートＩ塗液を乾燥塗布ｉｉ ６１ｇ／ｍ２となる
ようにエアナイフコーターで塗工・乾燥した後、キャス
トコート塗液を乾燥塗布１ｉ３ｊｉ／ｍ”となるように
塗布し、９０℃に加熱されたキャストドラムにてキャス
ト仕上げを行なった。Using the apparatus shown in Fig. 1, undercoat I coating liquid is dried and applied to a base paper of 50 g/m2.ii After coating and drying with an air knife coater to a weight of 61 g/m2, cast coat coating liquid is dried and applied1i3ji. /m'' and finished by casting using a cast drum heated to 90°C.
このようにして得られた軽量キャストコート紙の表面は
欠陥がなく良好であり、最高塗工速度は１５０ ｍ／ｍ
ｉｎであっ九。尚、アンダーコートを施した基紙の透気
度は８０秒であった。The surface of the lightweight cast-coated paper thus obtained is free of defects and has a maximum coating speed of 150 m/m.
Nine at in. The air permeability of the undercoated base paper was 80 seconds.
実施例２
実施例１のアンダーコート塗液のケイソウ土を針柱状炭
酸カルシウムの三次元ウニ状粒子（カルライ） ＳＡ
吸油量６０：白石工業■製）に、キャストコート塗液
のステアリン酸亜鉛ｆ ／４’ラフインワックスに代え
た以外は実施例１と同様にして軽量キャストコート紙を
得た。このようにして得られた軽量キャストコート紙の
表面は欠陥がなく良好であり、最高塗工速度は１３０ｒ
ＩＶ／ｍｌｎであった。Example 2 The diatomaceous earth of the undercoat coating liquid of Example 1 was transformed into three-dimensional sea urchin-shaped particles of needle-shaped calcium carbonate (Karlai) SA
A lightweight cast-coated paper was obtained in the same manner as in Example 1, except that zinc stearate f/4' rough-in wax was used in the cast-coat coating solution. The surface of the lightweight cast-coated paper thus obtained was free of defects and had a maximum coating speed of 130 rpm.
IV/mln.
尚、アンダーコートを施した基紙の透気度は２００秒で
あり九。The air permeability of the undercoated base paper is 200 seconds, which is 9.
比較例１
実施例１においてアンダーコート塗液のケイソウ土をカ
オリン（アストラプライト 吸油量４０：）冒−ジアカ
オリン社製）に代えた以外は実施例１と同様にして軽量
キャストコート紙を作製したが、キャストコート塗液の
乾燥が遅く最高塗工速度は９０ ｍ／ｒｎｉｎであり、
キャストコート表面にピンホールが目立ち表面性不良で
あった。表面性を良好にするにはキャストコート層の乾
燥塗布量が１９９７ｍ”以上必要であり、最高塗工速度
は６０ｍ／ｍ ｉ ｎ以下になった。尚、アンダーコー
トを施した基紙の透気度は５００秒であった。Comparative Example 1 A lightweight cast-coated paper was produced in the same manner as in Example 1, except that diatomaceous earth in the undercoat coating liquid was replaced with kaolin (Astraplite, oil absorption 40: manufactured by Diakaolin Co., Ltd.). , the drying of the cast coat coating liquid is slow and the maximum coating speed is 90 m/rnin,
Pinholes were noticeable on the cast coat surface and the surface quality was poor. In order to obtain good surface properties, the dry coating weight of the cast coat layer was required to be at least 1997 m'', and the maximum coating speed was 60 m/min or less. The degree was 500 seconds.
比較例２
カオリン（アストラプライト吸油ｆｔ４０ ） ４５部
、重質炭酸カルシウム（ニスカロン＋１５００吸油量２
８：三共精粉■製）２０部、ポリビニルアルコール（ブ
ーセノールＮ−３００日本合成化学■製）１５部、スチ
レン・ゲタジエンラテックス（ＪＳＲ０５６１日本合成
ゴム＠ｍ）２０部からなる固形分濃度４５％のアンダー
コート塗液を調製し次。Comparative Example 2 45 parts of kaolin (astraplite oil absorption ft40), heavy calcium carbonate (Nisscalon + 1500 oil absorption 2
8: Sankyo Seifun ■) 20 parts, polyvinyl alcohol (Busenol N-300 Nippon Gosei Kagaku ■) 15 parts, styrene getadiene latex (JSR0561 Japan Synthetic Rubber@m) 20 parts with a solid content concentration of 45%. Next, prepare the undercoat coating solution.
このアンダーコート塗液と実施例１のキャストコート塗
液を用いて実施例１と同様にして軽量キャストコート紙
を作製した。このときのアンダーコートを施した基紙の
透気度は１０００秒以上であり、キャストコート塗液の
乾燥が遅く最高塗工速度は４０ ＷＶ／ｒｎｉｎであり
、キャストドラム面にキャストコート塗液が部分的に付
着し、キャストコート表面の欠陥が著しく多く表面性が
劣っていた。A lightweight cast coated paper was produced in the same manner as in Example 1 using this undercoat coating liquid and the cast coat coating liquid of Example 1. At this time, the air permeability of the undercoated base paper was 1000 seconds or more, and the drying of the cast coat coating liquid was slow and the maximum coating speed was 40 WV/rnin, and the cast coat coating liquid was coated on the cast drum surface. It adhered partially, and there were many defects on the cast coat surface and the surface properties were poor.
比較例３
実施例１においてキャストコート塗液中のステアリン酸
亜鉛を除いた以外＃′ｉ実施例１と同様にして軽量キャ
ストコート紙を作製した。このときの最高塗工速度は１
５０ ｍ／ｍｉｎであり、キャストコート表面はピンホ
ール、コートムラ等の欠陥が目立った。キャストコート
表面を良くするにはキャストコート層の乾燥塗布量が１
Ｏ１ｇ／ｍ２以上必要であシ最高塗工速度は８０ ｆ
ｎ／ｒｎｉｎ以下になった。Comparative Example 3 A lightweight cast coated paper was prepared in the same manner as in Example 1 except that zinc stearate in the cast coat coating solution was omitted. The maximum coating speed at this time is 1
50 m/min, and defects such as pinholes and coating unevenness were noticeable on the cast coat surface. To improve the cast coat surface, the dry coating amount of the cast coat layer should be 1
O1g/m2 or more is required. Maximum coating speed is 80 f.
It became less than n/rnin.
第１図は実施例で使用したコーターの概略図である。 FIG. 1 is a schematic diagram of a coater used in Examples.
Claims (3)
ダーコート層を設けた透気度（ＪＩＳ Ｐ８１１７）３
００秒以下の基紙上に、顔料・熱可融性物質及び結着剤
を主成分とするキャストコート層を設けたことを特徴と
する軽量キャストコート紙(1) Air permeability (JIS P8117) 3 with an undercoat layer containing pigment and binder as main components on paper support
A lightweight cast-coated paper characterized by having a cast-coated layer containing a pigment, a thermofusible substance, and a binder as main components on a base paper of 00 seconds or less.
１）５０ｍｌ／１００ｇ以上の顔料を１０〜８０重量％
含有することを特徴とする特許請求の範囲第（１）項記
載の軽量キャストコート紙(2) Oil absorption amount in the undercoat layer (JIS K510
1) 10-80% by weight of pigment of 50ml/100g or more
The lightweight cast coated paper according to claim (1), characterized in that it contains
＾２であることを特徴とする特許請求の範囲第１項の軽
量キャストコート紙(3) The coating amount of the cast coat layer is 0.5 to 10 g/m
The lightweight cast coated paper according to claim 1, characterized in that: ^2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62035795A JP2717177B2 (en) | 1987-02-20 | 1987-02-20 | Manufacturing method of lightweight cast coated paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62035795A JP2717177B2 (en) | 1987-02-20 | 1987-02-20 | Manufacturing method of lightweight cast coated paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63211394A true JPS63211394A (en) | 1988-09-02 |
| JP2717177B2 JP2717177B2 (en) | 1998-02-18 |
Family
ID=12451856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62035795A Expired - Fee Related JP2717177B2 (en) | 1987-02-20 | 1987-02-20 | Manufacturing method of lightweight cast coated paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2717177B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345800A (en) * | 1989-07-14 | 1991-02-27 | Nitto Denko Corp | Air-permeable laminated paper for screen printing |
| JPH07117335A (en) * | 1993-06-24 | 1995-05-09 | Mitsubishi Paper Mills Ltd | Ink jet recording sheet and its manufacture |
| WO1997036050A1 (en) * | 1996-03-26 | 1997-10-02 | The International Group, Inc. | Repulpable moisture resistant coated articles and methods of making and repulping the same |
| JP2009083328A (en) * | 2007-09-28 | 2009-04-23 | Dainippon Printing Co Ltd | Thermal transfer image receiving sheet |
| JP2010255136A (en) * | 2009-04-24 | 2010-11-11 | Daio Paper Corp | Coated paper |
| JP2020507018A (en) * | 2017-02-03 | 2020-03-05 | アールストローム − ムンクショー オーワイジェイ | Decorative paper for laminating |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49118906A (en) * | 1973-03-24 | 1974-11-13 | ||
| JPS5576198A (en) * | 1978-11-27 | 1980-06-09 | Kanzaki Paper Mfg Co Ltd | Production of casted coat paper |
-
1987
- 1987-02-20 JP JP62035795A patent/JP2717177B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49118906A (en) * | 1973-03-24 | 1974-11-13 | ||
| JPS5576198A (en) * | 1978-11-27 | 1980-06-09 | Kanzaki Paper Mfg Co Ltd | Production of casted coat paper |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345800A (en) * | 1989-07-14 | 1991-02-27 | Nitto Denko Corp | Air-permeable laminated paper for screen printing |
| JPH07117335A (en) * | 1993-06-24 | 1995-05-09 | Mitsubishi Paper Mills Ltd | Ink jet recording sheet and its manufacture |
| WO1997036050A1 (en) * | 1996-03-26 | 1997-10-02 | The International Group, Inc. | Repulpable moisture resistant coated articles and methods of making and repulping the same |
| US6416620B1 (en) | 1996-03-26 | 2002-07-09 | The International Group, Inc. | Method of repulping repulpable and recyclable moisture resistant coated articles |
| JP2009083328A (en) * | 2007-09-28 | 2009-04-23 | Dainippon Printing Co Ltd | Thermal transfer image receiving sheet |
| JP2010255136A (en) * | 2009-04-24 | 2010-11-11 | Daio Paper Corp | Coated paper |
| JP2020507018A (en) * | 2017-02-03 | 2020-03-05 | アールストローム − ムンクショー オーワイジェイ | Decorative paper for laminating |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2717177B2 (en) | 1998-02-18 |
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