JPH0317958B2 - - Google Patents
Info
- Publication number
- JPH0317958B2 JPH0317958B2 JP58014563A JP1456383A JPH0317958B2 JP H0317958 B2 JPH0317958 B2 JP H0317958B2 JP 58014563 A JP58014563 A JP 58014563A JP 1456383 A JP1456383 A JP 1456383A JP H0317958 B2 JPH0317958 B2 JP H0317958B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- paper
- water
- base paper
- cal
- 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
- 238000000576 coating method Methods 0.000 claims description 127
- 239000011248 coating agent Substances 0.000 claims description 113
- 239000005871 repellent Substances 0.000 claims description 47
- 230000002940 repellent Effects 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 239000003795 chemical substances by application Substances 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 27
- 230000004888 barrier function Effects 0.000 claims description 26
- 239000007787 solid Substances 0.000 claims description 26
- 230000035699 permeability Effects 0.000 claims description 22
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 16
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 9
- 238000010009 beating Methods 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 5
- 235000019698 starch Nutrition 0.000 claims description 5
- 239000008107 starch Substances 0.000 claims description 5
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 4
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 4
- 239000000661 sodium alginate Substances 0.000 claims description 4
- 235000010413 sodium alginate Nutrition 0.000 claims description 4
- 229940005550 sodium alginate Drugs 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 150000004812 organic fluorine compounds Chemical group 0.000 claims description 3
- 229920000881 Modified starch Polymers 0.000 claims 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims 2
- 235000019426 modified starch Nutrition 0.000 claims 2
- 229920001131 Pulp (paper) Polymers 0.000 claims 1
- 239000000123 paper Substances 0.000 description 103
- 230000001070 adhesive effect Effects 0.000 description 26
- 239000003921 oil Substances 0.000 description 26
- 239000000853 adhesive Substances 0.000 description 25
- 229920001296 polysiloxane Polymers 0.000 description 17
- 238000000034 method Methods 0.000 description 16
- 239000004447 silicone coating Substances 0.000 description 13
- 239000011086 glassine Substances 0.000 description 12
- 238000012545 processing Methods 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 10
- -1 etc. Polymers 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 229920003169 water-soluble polymer Polymers 0.000 description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 229910052731 fluorine Inorganic materials 0.000 description 7
- 239000011737 fluorine Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 238000007665 sagging Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000001993 wax Substances 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 5
- 238000003490 calendering Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 3
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 3
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000002075 main ingredient Substances 0.000 description 2
- GBCAVSYHPPARHX-UHFFFAOYSA-M n'-cyclohexyl-n-[2-(4-methylmorpholin-4-ium-4-yl)ethyl]methanediimine;4-methylbenzenesulfonate Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1.C1CCCCC1N=C=NCC[N+]1(C)CCOCC1 GBCAVSYHPPARHX-UHFFFAOYSA-M 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000004657 carbamic acid derivatives Chemical class 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 229920006184 cellulose methylcellulose Polymers 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000002649 leather substitute Substances 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
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 150000002924 oxiranes Chemical class 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920001308 poly(aminoacid) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Adhesive Tapes (AREA)
- Paper (AREA)
Description
本発明は剥離剤を直接塗工することの可能な剥
離紙原紙（以下、剥離剤直塗工用原紙と略称）の
製造方法に関するものであり、更に詳しくは加工
適性の良い該原紙をサイズ・プレス（以下、SP
と略称）とカレンダーサイズ・プレス（以下、
Cal・SPと略称）による２段塗工処理することに
よつて簡便に能率良く、しかも安価に製造する方
法を提供せんとするものである。
剥離紙は、周知の様に各種の粘着シート、粘着
テープ、感熱接着シート、感熱接着テープに用い
られ、またポリウレタン、ポリアミノ酸などより
成る合成皮革の製造や、ポリ塩化ビニルレザーの
製造などのほか各種のプリプレグ樹脂、アスフア
ルト、ゴムなどにも使用されるものである。
剥離紙は紙基材の表面にシリコーン樹脂、ポリ
エステル樹脂、アミノアルキド樹脂、フツ素樹脂
などの剥離剤を塗工して得られるが、塗工量が少
量であるため剥離機能を充分に発揮させるには剥
離剤を紙層中に浸透させないで表面に有効に保持
させることが必要である。このため基材となる原
紙には高度のバリヤー性が要求される。茲に述べ
るバリヤー性とは剥離剤の均一塗工に必要な低い
透気性と高い平滑性を持つた性質を意味する。ま
た各種の粘着製品を得るには更にこの剥離紙を基
材として剥離剤塗工面に粘着剤などを塗工し、乾
燥する工程を経るのが普通であり、合成皮革や塩
ビレザー製造の際にもゾル状配合剤を塗工し、乾
燥およびゲル化させるのが普通である。之等の剥
離紙製造工程およびその後の加工工程においては
加工適性の良いことが不可欠の条件であつて作業
性を悪化させたり、製品の性能や外観を損なうこ
とがあつてはならないが、この要求も出発素材で
ある剥離紙原紙に課せられる。
剥離紙原紙に高度のバリヤー性を持たせるため
には従来二つの手段が採られている。その一つは
グラシン紙、或いはトレーシングペーパーなどに
見られる様に紙料パルプを強度に叩解することに
よつて紙の密度を上げると共に透気性を減ずる方
法であり、特にグラシン紙では高度のスーパーカ
レンダー処理を行なつて平滑性をも付与してい
る。他の一つは多孔性の紙表面を目止めすること
によつて剥離剤の浸透を阻止する方法であり、こ
の目的でPVA.CMC.デンプンなどの塗工のほか
ポリエチレンラミネート、顔料塗工などが行なわ
れている。
剥離剤直塗工用原紙としてグラシン紙を使用す
る第一の場合においては強度の叩解パルプを使用
することから原紙の寸法安定性が悪く、このこと
が上記加工適性を悪化し、また剥離紙にカールや
ペコペコなどのトラブルを誘発し易いという大き
な欠点がある。ペコペコとは剥離剤の塗工、乾燥
時および粘着剤などの塗工、乾燥時に紙の寸法変
化などに起因して製品面に凹凸が発生する現象を
指し、カールと共に外観上好ましくないことは勿
論、粘着剤の均一塗工など後加工適性に対して大
きなマイナス要因として問題視されているもので
ある。グラシン紙はまた、強度叩解、スーパーカ
レンダー処理など製造上の煩雑性から一般の加工
原紙に比べると電力消費の上昇、抄速低下、生産
歩留低下などのコストアツプ要因により価格的に
も問題を有している。
目止め処理を行なう第二の方法においては、紙
の寸法安定性に起因する上述のトラブルは避けら
れるものの、多くの場合別工程を必要とするため
矢張りコスト高となり、またPVA.CMC.デンプ
ンなどの塗工では必ずしも充分なバリヤー性が得
られるとは限らず粘着製品の長期保存などの場合
には剥離紙としての機能が著しく低下して実際上
使用不可能となることがある。従つて塗工タイプ
と雖も或る程度は原紙の叩解を進める必要があ
り、結果的には加工性に関するメリツトも必ずし
も大きいとは言えない。
この様な従来技術の現状に鑑み、本発明者等は
目止め処理を特に別工程で行なう必要が無く、且
つグラシン紙に見られる様な寸法安定性に起因す
るトラブルの無い加工適性に優れた剥離剤直塗工
用原紙を安価に製造する方法について鋭意研究に
努めた結果、SP塗工とCal・SP塗工の２段処理
を行なうことによつて、簡便に能率良く目的が達
せられることを見出し、本発明を完成するに至つ
たのである。即ち本発明は軽度叩解（CSF200〜
550ml）の普通紙を用いSPにおいて水溶性ポリマ
ーを主成分とする水溶性塗工液若しくは水溶性ポ
リマーを主成分に撥水剤、撥油剤若しくは撥水・
撥油剤を含む水性塗工液を含浸の目的で塗工、乾
燥させ続いてCal・SPにおいてバリヤー性の付与
を目的に同じく水溶性ポリマーを軽量塗工する２
段塗工方法である。但しCal・SPは必要に応じ之
を持つマシン工程で別途行なつてもその効果には
変わりはない。
以下之等の塗工について更に詳しく説明する。
前段のSP塗工においては水溶性ポリマーを紙に
可及的含浸させ、紙層内部の空隙を埋めて後段の
Cal・SP塗工で効果が充分に発揮される様にす
る。SP装置としては通常のホリゾンタル、イン
クラインド或いはバーチカルタイプを用いること
が出来るが、之等に限らずビルブレードの様なブ
レード方式のコーター或いはゲートロールの様な
トランスフアーロール方式のコーターなども充分
に使用可能である。
SP塗工における水溶性塗工液の主成分である
水溶性ポリマーとしてはPVA、デンプン、
CMC、アルギン酸ナトリウム、スチレン無水マ
レイン酸共重合体などを挙げることが出来、之等
の１種または２種以上を混合して使用する。塗工
液の固形分濃度は２〜10％（以下総べて重量％）
が適当で、液として両面で20〜60ｇ／m2の通常
SP塗工を行なう。SP用水溶性塗工液濃度を２〜
10％としたのは次の理由による。即ち、２％以下
の薄い濃度では紙層内の目止めが充分に行なわれ
ず、このため後続のCal・SP塗工での液付着量が
増して紙中水分の増加を招き、シワ、断紙を誘発
して操業を困難にするからである。また、10％以
上の高濃度になるとSP塗工後ドライヤーでのブ
ロツキング並びにCal・SP塗工時カレンダーでの
ブロツキングを多発して操業を困難にするからで
ある。
SP用水溶性塗工液は、水溶性ポリマーのみで
も目的を充分に達成することが出来るが、本発明
では特に副成分として撥水剤、撥油剤若しくは撥
水・撥油剤を添加することを好適とする。この理
由は、SP時に撥水剤や撥油剤、撥水・撥油剤を
添加すると後続のCal・SP塗工における原紙への
液付着量が減少出来、且つ之を有効に表層にとど
めて紙中水分の増加を抑制出来ること、並びに撥
水剤、撥油剤若しくは撥水・撥油剤本来の剥離特
性によつてSP塗工後のドライヤーへのブロツキ
ングやCal・SP塗工時のカレンダーロールへのブ
ロツキングを抑制して抄紙性を向上出来るためで
ある。更に本発明におけるSPでの撥油性の付与
はシリコーン樹脂などの溶剤タイプの剥離剤塗工
性に対しても好ましいバリヤー効果を秘めてい
る。
この種の撥水剤、撥油剤若しくは撥水・撥油剤
としては下記の様なワツクス系エマルジヨン或い
は有機フツ素系化合物を用いる。撥水剤として用
いるワツクス系エマルジヨン（以下、撥水剤と云
う）としてはパラフインワツクスエマルジヨン、
低分子量ポリエチレンワツクスエマルジヨン、マ
イクロクリスタリンワツクスエマルジヨン、カル
ナウバワツクスエマルジヨンなどを例示すること
が出来る。撥油剤、撥水・撥油剤として用いる有
機系フツ素化合物（以下、撥油剤、撥水、撥油剤
と云う）としてはアクリル酸、メタアクリル酸、
ビニルアルコール、エポキシド、フマール酸など
から成る主鎖に炭素数６〜12のフルオルカーボン
基を持つ高分子化合物の他、パーフルオルアルキ
ル燐酸エステル若しくはパーフルオルアルキルス
ルホン酸アマイドリン酸エステルなどの水溶性
塩、パーフルオルアルキルモノカルボン酸誘導
体、パーフルオルアルキルアミン、パーフルオル
アルコキシアルキルカルバメートなどの水溶性化
合物などを例示することが出来る。之等の水溶液
または乳濁液を水溶性ポリマーに対し固形分換算
で30％以下の量を添加する。30％以上の多量の併
用は剥離剤塗工時の撥じきトラブルを誘発して剥
離性に対しては逆に好ましくない結果となり、後
続の水溶性バリヤー付与剤のCal・SP塗工によつ
てその撥じきトラブルを解消し切れないからであ
る。
本発明後段のCal・SP塗工は主として紙にバリ
ヤー性を付与する目的で行なうのである。Cal・
SPとしては通常の多段ロールマシンカレンダー
を使用することが出来、比較的前部のロール間ニ
ツプで水性塗工液を紙に供給する。カレンダーの
圧力は２Kg／cm以上とする。
Cal・SP塗工用の水溶性ポリマーとしては
PVA、デンプン、CMC、アルギン酸ナトリウ
ム、スチレン・無水マレイン酸共重合体などを挙
げることが出来る。之等は目的に応じて単独また
は混合使用が可能であり、また必要に応じて染
料、顔料などを併用して着色剥離紙原紙を製造す
ることも可能である。Cal・SP塗工は透気性低減
に対して極めて有効で、SP塗工後の透気性を５
〜50倍の範囲で減少して、普通紙にもグラシン並
みの透気度を容易に付与することが出来る。更に
Cal・SP塗工の効果には次の様なものがある。前
述した様にSP塗工液に撥水剤や撥油剤、撥水・
撥油剤を併用することは本発明の実施における抄
紙性の向上を主目的とし、同時に原紙への溶剤バ
リヤー性付与の点で好ましいが、この侭では特に
撥油剤、撥水・撥油剤の表面露出が剥離剤の撥じ
きトラブルを誘発して剥離塗工適性に欠ける。し
かし、Cal・SPによるバリヤー性の付与によつて
表面に露出した撥水剤或いは撥油剤、撥水・撥油
剤はその主成分である水溶性のポリマーで被覆さ
れ離型剤塗工液の撥じきトラブルを解消出来る。
またCal・SP塗工はその優れたアイロン効果
（適度な水の存在下における熱圧セツテイング）
によりスーパーカレンダー処理に匹敵する緊密性
と平滑性を与え、更には従来の塗工方式では欠点
となつていた原紙の加工安定性をも向上してカー
ルやペコペコの減少にも優れた効果を発揮する。
即ちCal・SPによるバリヤー付与液の金属ロール
間熱圧塗工は、紙質への効果が従来の強制加圧を
伴わないエアナイフ、マイヤーバー、ブレード塗
工などとは本質的に異なつているのである。
本発明のCal・SP塗工などとは本質的に異なつ
ているのである。
本発明のCal・SP塗工においては固形分濃度
0.5〜５％の水溶性塗工液を使用し、塗工量を３
〜20ｇ／m2（片面）の範囲に押える。このことは
単位面積当りの塗工液付着量を減じ、原紙が薄い
場合でも水分によるシワやブロツキングを誘発さ
せないためである。茲で３〜20ｇ／m2のCal・SP
液塗工量は紙中水分として凡そ13％以内に相当す
る。本発明では前段のSP塗工によつてCal・SP
処理前の原紙の透気性を減じ、また適度の撥水
剤、又は撥水・撥油剤の使用によつてCal・SPで
の軽量塗工を可能にした。
本発明におけるCal・SPによる塗工方法は、元
来板紙、カートンなどの厚物紙に例えば撥水、光
沢、平滑の向上などを目的とした表面処理方法と
して用いられている。しかしながら、之を普通の
薄物紙（45〜120ｇ／m2）に用いることはシワ、
断紙などのトラブルから不可能とされ、しかも本
発明の様に薄物を用いた剥離紙のバリヤー性付与
といつた特殊目的に之を用いた例は見られない。
本発明においてCal・SP塗工は塗工液の供給を
紙の一方の側だけに行なえば片面塗工が可能であ
り、紙の両側に異種の塗工液を供給すれば異種両
面塗工も可能である。またCal・SP塗工はオンマ
シンでなくオフマシンで行なうことも出来る。
本発明の剥離剤直塗工用原紙には普通紙が使用
出来、パルプの種類、填料、染料の有無、内添サ
イズ処方などについては特に規制を必要としない
が、前段のSP塗工での水溶性塗工液の浸透や紙
の強度を保持するためには内添サイズの添加率は
0.5％以下（対パルプ）、填料の添加率は20％以下
とするのが望ましい。またパルプの叩解度も200
〜550mlCSFの範囲が好適である。原紙坪量は45
〜120ｇ／m2の如何なる坪量でも使用出来るが、
坪量が45ｇ／m2より低くなると断紙を多発して実
際上、抄造が不可能となり、また上限の120ｇ／
m2は現在一般に用いられている薄物剥離紙の最高
坪量を以てその範囲としたものである。
かくして得られる普通紙にSPとCal・SPを組
み合わせた２段塗工を施して成る低透気性、高平
滑度の高度なバリヤー性を持つた剥離剤直塗工用
原紙は、加工性、経済性の両面において之迄この
分野で用いられていたグラシン紙や目止め処理紙
に対し明らかな優位性を有するもので剥離紙分野
への貢献度は極めて大きいと言える。
以下に実施例を挙げて説明する。実施例中の諸
試験は次の様にして行なつた。１）〜２）はJIS
に基づいて実施した。
１平滑度 ：500mm水柱背圧式空気マイクロメー
ターを用いたベツク目盛（JIS−
P8119）表示の王研式平滑度計（旭
精工(株)製BK・65型、測定範囲１秒
〜５万秒）で測定した。
２透気度 ：500mm水柱背圧式空気マイクロメー
ターを用いたガーレデンソメーター
目盛（JIS−P8117）の王研式透気
度計（旭精工(株)製KG2型、測定範
囲１秒〜100万秒）で測定した。
３剥離抵抗：テンシロンUTM4（東洋ボールドウ
イン社製）引張り試験機を用い、試
料幅20mm剥離角度180゜引張り速度
1000mm／mimの条件で剥離力ｇ／
20mmを測定した。測定は粘着剤加工
の直後および１週間経過後の両方に
ついて行なつた。
４加工適性評価：剥離剤塗工、粘着剤塗工などの
加工適性（操業性や製品のカール、
ペコペコ）を視覚によつて判定し評
価した。
実施例 １
パルプ配合Ｎ・BKP50％、Ｌ・BKP50％、叩
解度300mlCSFの原料パルプを用い、ロジン系サ
イズ0.4％（対パルプ）添加の酸性サイズ（硫酸
バン土定着）を施した坪量70ｇ／m2の通常長網マ
シン上質紙において、次に示す液組成の水溶性塗
工液をSP塗工し、多筒シリンダードライヤーで
乾燥した後、更にCal・SP塗工した。
SP用水溶性塗工液組成；
PVA（商品名PVA105、クラレ(株)製）8.0％（固
形分濃度）
CMC（商品名SPP15、山陽国策パルプ(株)製）
0.5％（固形分濃度）
フツ素系撥水・撥油剤（商品名FP130、住友化
学(株)製）0.3％（固形分濃度）
Cal・SP用バリヤー付与液組成；
PVA（商品名P700、日本合成化学(株)製）1.0％
（固形分濃度）
CMC（商品名AOIH、山陽国策パルプ(株)製）0.5
％（固形分濃度）
SP塗工およびCal・SP塗工での薬液付着量は
夫々両面で約35ｇ／m2、約10ｇ／m2であつた。こ
の際、抄紙時のブロツキング、断紙などのトラブ
ルは皆無であつた。得られた原紙は透気度45000
秒、平滑度530（Ｗ面）〜550（Ｆ面）秒を示し、グ
ラシン紙に劣らぬ表面性と優れたバリヤー特性を
示した。
次にこの直塗工用原紙を用いて付加反応型シリ
コーン溶液（商品名KS−772）、信越化学(株)製）
をシリコーン濃度５％に希釈してマイヤーバーコ
ーターでシリコーン塗工量が1.0ｇ／m2になる様
に塗工した。シリコーン塗工後の乾燥、キユア条
件は120℃、20秒とした。この際、シリコーン面
の曇りや脱落は直後、経時（１ケ月）に汎つて全
く認められずキユア性、密着性は良好であつた。
続いてシリコーン塗工紙の剥離性を評価するため
溶剤型アクリル系の粘着剤（商品名BPS−5127、
原液37.5％東洋インキ(株)製）をアプリケーター
（クリアランス125／1000mm）を用いて塗工し、
100℃で２分間乾燥した後、一般上質紙（商品名
KYP66.3ｇ／m2山陽国策パルプ(株)製）を貼り合
わせ、剥離抵抗を測定した。その結果、剥離抵抗
は直後、23ｇ／20mm、１週間後26ｇ／20mmで、グ
ラシンタイプ原紙と殆んど等しい満足な値を示し
た。なお、シリコーン塗工工程および粘着加工後
でのカール、ペコペコの発生は殆んどなくグラシ
ンの場合に比べ極めて優れた加工性能を示した。
また、同直塗工用原紙に無溶剤型シリコーン
（商品名KNS204、信越化学(株)製）をオフセツト
グラビア方式で1.0ｇ／m2塗工し、170℃、20秒間
乾燥して前述の溶剤型シリコーンの場合と同様に
その塗工性、剥離性能を評価した。
結果は溶剤タイプシリコーンの場合同様、１週
間経過後の剥離抵抗は26ｇ／20mmと軽く、且つシ
リコーン塗工工程および粘着加工後での剥離紙の
カール、ペコペコの発生は殆んどなかつた。
実施例 ２
使用パルプはＮ・BKP20％、Ｌ・BKP80％配
合とし、パルプの叩解度は450mlCSF.原紙坪量は
110ｇ／m2とした。内添サイズ剤はアルキルケテ
ンダイマー（商品名SPK.901荒川化学(株)製）を
0.05％（対パルプ）使用し、定着剤としてはポリ
アミドエピクロルヒドリン樹脂（商品名カイメン
557H、デイツクハーキユレス(株)製）を0.1％（対
パルプ）添加使用した。実施例１と同様に抄造
し、SPおよびCal・SP塗工は次の薬液組成を使
用した。
SP用水溶性塗工液組成；
PVA（商品名N.300、日本合成化学(株)製）3.0％
（固形分濃度）
CMC（商品名SPP15、山陽国策パルプ(株)製）
0.5％（固形分濃度）
フツ素系撥水、撥油剤（商品名FP130、住友化
学(株)製）0.3％（固形分濃度）
Cal・SP用バリヤー付与液組成；
PVA（商品名P700、日本合成化学(株)製）2.5％
（固形分濃度）
CMC（商品名AOIH、山陽国策パルプ(株)製）0.5
％（固形分濃度）
得られた原紙は透気度12000秒、平滑度は460
（Ｗ面）〜540（Ｆ面）秒であつた。
本直塗工用原紙に実施例１同様の条件で溶剤型
シリコーン塗工し、更に粘着剤塗工を行なつてそ
の剥離特性を評価した。結果はシリコーン面の曇
り、脱落は皆無でキユア性、密着性は共に良好で
あり、粘着剤による直後および１週間後の剥離抵
抗も夫々29ｇ／20mm、34ｇ／20mmと良好な剥離性
を示した。この場合も、シリコーン塗工時および
粘着加工後のカール、ペコペコは殆んど無く加工
適性に優れていた。なお本実施例ではSP塗工、
乾燥後の巻取を別途採取してCal・SPのオフマシ
ン塗工についても実施した。得られた剥離剤直塗
工用原紙は、透気度12000後、平滑度460（Ｗ面）
〜540（Ｆ面）秒のバリヤー性を示し、シリコーン
塗工後の剥離抵抗（経時）は38ｇ／20mmとなつて
前記オンマシンCal・SP塗工の評価と同等の結果
を得た。
実施例 ３
パルプ配合、叩解度坪量、内添サイズなどの抄
造条件は実施例２と同一であるが、SP用水溶性
塗工液組成を商品名PVA（N300、日本合成(株)製）
とCMC（商品名AOIH、山陽国策パルプ(株)製）の
２成分としてフツ素系撥水・撥油剤（商品名
FP.130、住友化学(株)製）は無添加とした。Cal・
SP用バリヤー付与液の組成は実施例２に従つた。
得られた直塗工用原紙のバリヤー性は透気度
12500秒、平滑度480（Ｗ面）〜560（Ｆ面）秒でフ
ツ素系撥水・撥油剤併用の実施例２と殆んど差が
なかつた。しかし粘着剤加工後の剥離低抗のみは
剥離紙として支障の無い範囲ではあるが、直後33
ｇ／20mm、１週間後39ｇ／20mmと僅かに重い剥離
性を示した。また抄紙時SPおよびCal・SP塗工
工程でのブロツキング状態は実施例２或いは実施
例３に比べると稍々多く本発明におけるSP塗工
でのフツ素系撥水・撥油剤或いはワツクス系撥水
剤の併用は抄紙性の面で明らかに好ましいと云え
る。
実施例 ４
本実施例は坪量45ｇ／m2の極く薄物への適応例
である。使用パルプはＮ・BKP60％、Ｌ・
BKP40％配合とし、パルプの叩解度は200ml
CSF、内添サイズは実施例１同様の酸性処方（ロ
ジン、硫酸バン土）とした。
SPならびにCal・SP塗工液は実施例１に従つ
た。この際のSPおよびCal・SPでの薬液付着量
は、各々両面で前者27ｇ／m2、後者７ｇ／m2を示
し、抄紙時のブロツキング、断紙などのトラブル
は無く順調な抄造を経緯した。
得られた剥離剤直塗工用原紙は透気度310000
秒、平滑度600（Ｗ面）〜650（Ｆ面）秒の極めて優
れたバリヤー性を示した。
本剥離剤直塗工原紙は実施例１同様の条件で溶
剤型シリコーンを塗工後、粘着剤塗工を行なつて
その剥離特性を評価した。シリコーン面の曇り、
脱落は皆無でキユア性、密着良好、シリコーン塗
工工程および粘着剤塗工後のカール、ペコペコも
殆んど見られず、加工性は極めて良好であつた。
剥離抵抗は、直後18ｇ／20mm、１週間後20ｇ／20
mmとグラシンよりも優れた値を得た。
なお、低坪量の可能性を求めて更に35ｇ／m2の
抄造も実施してみたが、その結果は、Cal・SPで
の紙中水分アツプ（Cal・SP液付着量７ｇ／m2紙
中水分としては約17％に相当）によるシワ多発、
ブロツキング、断紙を続発して製品巻取りを得る
に至らなかつた。
実施例 ５
本実施例は原紙に填料を内添した例である。使
用パルプはＮ・BKP20％、Ｌ・BKP80％配合と
しパルプの叩解度は400mlCSFとした。填料はタ
ルク（日本タルク(株)製商品名SWS）を紙中15％
目標で内添した。内添サイズは実施例１同様の酸
性処方（ロジン、硫酸バンド）とした。坪量は
110ｇ／m2とし、SPならびにCal・SP塗工液は実
施例２に従つた。
この際SPおよびCal・SPでの操業性は特に問
題無く順調に経緯した。
得られた直塗工用原紙は、透気度9000秒、平滑
度520（Ｗ面）〜580（Ｆ面）秒と良好なバリヤー性
を示した。本直塗工原紙は実施例１同様の条件で
溶剤型シリコーンを塗工、粘着剤塗工を行なつて
その剥離性を評価した。シリコーン面の曇り、脱
落は皆無でキユア性、密着性良好、シリコーン塗
工工程および粘着剤塗工後のカール、ペコペコは
殆んどみられず加工性は極めて良好であつた。
剥離抵抗は、直後40ｇ／20mm、１週間後45ｇ／
20mmと稍重い目の値を示したが、中程度ないし重
剥離用としてなら充分実用し得るものであつた。
比較例 １
実施例に対して市販グラシン紙（Ａ社）のバリ
ヤー性と剥離剤直塗工性能を示す。坪量は85ｇ／
m2で透気度は10000秒、平滑度は390（Ｗ面）〜400
（Ｆ面）秒であつた。本直塗工用原紙を用いて実
施例１の条件で溶剤型シリコーン塗工および粘着
剤塗工を行なつた。剥離抵抗は直後22ｇ／20mm、
１週間後23ｇ／20mmであつたがシリコーン塗工工
程および粘着剤塗工後のカール、ペコペコは極め
て多く、本発明の実施例１〜５に比べると甚だし
く劣るものであつた。
比較例 ２
本発明のSP、Cal・SPによる２段塗工を行な
わず、SP塗工のみを行なつた一般マシンカレン
ダー掛け紙の場合である。
抄紙条件はCal・SPをカツトした以外は実施例
２に従つた。また、シリコーン、粘着剤の塗工条
件および品質評価は実施例１と同様にした。
得られた原紙は、透気度550秒、平滑度45（Ｗ
面）〜55（Ｆ面）秒とバリヤー性は極端に低く、
粘着剤塗工後の剥離抵抗は紙層間剥離を起こして
測定不能となり、本発明のSP、Cal・SP2段塗工
の優位性を明解に実証した。
比較例 ３
本比較例はSP用水溶性塗工剤の濃度が特許請
求範囲第１項（２〜10％）を下まわつた場合であ
る。
坪量は70ｇ／m2とし、抄紙条件はSP用水溶性
塗工剤の液組成を次に示す希薄溶液とした他は総
べて実施例１に従つた。
SP用水溶性塗工液組成：
PVA（商品名PVA105クラレ(株)製）1.0（固形分
濃度）
フツ素系撥水・撥油剤（商品名FP・130、住友
化学(株)製）0.3（固形分濃度）
この場合、SP塗工は順調に経過したが、Cal・
SP塗工でシワ多発、断紙を発生して抄造不可能
となつた。これはSP用水溶性塗工液の濃度が薄
いため充分な透気度が得られずCal・SP塗工での
液付着量が増して紙中水分が極端にアツプ（20
ｇ／m2付着紙中水分として約22％相当）し操業を
困難にしたものである。
更にSP塗工液濃度が逆に特許請求範囲第１項
よりも高い場合として上記処方中PVA・105を12
％とした場合について実施した。この場合はSP
塗工後の乾燥工程およびCal・SPの両工程でブロ
ツキングを多発して正常な巻取を得るに至らなか
つた。
比較例 ４
本比較例はSP用水溶性塗工液に添加する撥
水・撥油剤が特許請求範囲第１項の規制（SP塗
工液固形分に対して０〜30％）を越えた場合であ
る。
抄紙条件はSP用水溶性塗工液に添加するフツ
素系撥水・撥油剤としての商品名FP−130（住友
化学(株)製）の濃度を0.3から1.8％（SP液全固形分
に対し34％）に増量した他は全て実施例２に従つ
た。また、シリコーン、粘着剤の塗工条件および
紙質評価については実施例１に従つた。
得られた剥離剤直塗工用原紙のバリヤー性は、
透気度10500秒、平滑度450（Ｗ面）〜510（Ｆ面）
秒で実施例２と殆んど差がない。しかしシリコー
ン塗工後の粘着剤剥離抵抗は直後で75ｇ／20mm、
１週間後で95ｇ／20mmと極端に重く、また個々の
剥離抵抗のバラツキが著しく実用範囲を越えるも
のであつた。
当原紙はシリコーン塗工時の塗工液の撥じき現
象が甚だしく、これがシリコーンの塗膜形成を乱
して剥離特性を劣下させたものである。
比較例 ５
原料パルプはＮ・BKP20％、Ｌ−BKP80％配
合とし、叩解度500mlCSFで、坪量180ｇ／m2の紙
を抄造した。内添サイズは実施例２と同様の中性
処方とした。SPおよびCal・SP塗工液組成は次
の通りである。
SP用水溶性塗工液組成；
酸化デンプン（商品名エスサンサイザー700、
味の素(株)製）5.0％（固形分濃度）
PVA（商品名N.300、日本合成化学(株)製）
1.0％（固形分濃度）
スチレン無水マレイン酸共重合体（商品名スミ
レツツレジン402、住友化学(株)製）
0.7％（固形分濃度）
撥水剤ワツクスエマルジヨン（商品名ダイジツ
ト−EY、互応化学(株)製）
1.0％（固形分濃度）
Cal・SP用バリヤー付与液組成；
PVA（商品名P700、日本合成化学(株)製）
2.5％（固形分濃度）
スチレン無水マレイン酸共重合体（商品名スミ
レツツレジン402、住友化学(株)製）
0.5（固形分濃度）
得られた直塗工用原紙は透気度4000秒、平滑度
250（Ｗ面）〜270（Ｆ面）秒であつた。
実施例１同様に溶剤タイプシリコーンを塗工し
剥離特性を評価した結果は、シリコーン面の曇
り、脱落は無く、キユア性、密着性は良好であつ
た。剥離抵抗は直後45ｇ／20mm、１週間後55ｇ／
20mmで、グラシン紙の場合よりは稍々重かつたが
重剥離用途には使用可能な剥離特性を示した。
本比較例においてもシリコーン塗工工程および
粘着加工後のカール、ペコペコなどは見られず加
工適性は良好であつた。
次に剥離剤としてアルキド樹脂（商品名テスピ
ールSP2504、徳島精油(株)製）と硬化剤（商品名
ドライヤー50、徳島精油(株)製）のトルエン混合溶
液を固形分で約2.5ｇ／m2マイヤーバー塗工し、
150℃で１分間乾燥した。
この剥離紙に下記処方の塩ビペースト
商品名ゼオン＃121（日本ゼオン(株)製） 100部
商品名エスカロン＃600（三共精紡(株)製） 70部
DOP 60部
ステアリン酸亜鉛 ３部
ステアリン酸バリウム ２部
をアプリケーター（クリアランス250／1000mm）
で塗工し、210℃で２分間乾燥した。塩ビレザー
に対する剥離性は剥離抵抗25ｇ／20mmで10回まで
リピート使用可能であつた。
なお、次表に実施例と比較例とを１括して表記
する。
The present invention relates to a method for manufacturing release paper base paper (hereinafter referred to as base paper for direct coating of release agent) to which a release agent can be directly applied. Press (hereinafter referred to as SP
) and calendar size press (hereinafter referred to as
The purpose of this invention is to provide a simple, efficient, and inexpensive manufacturing method using a two-stage coating process (abbreviated as Cal SP). As is well known, release paper is used in various adhesive sheets, adhesive tapes, heat-sensitive adhesive sheets, heat-sensitive adhesive tapes, and is also used in the production of synthetic leather made of polyurethane, polyamino acids, etc., polyvinyl chloride leather, etc. It is also used in various prepreg resins, asphalt, rubber, etc. Release paper is obtained by coating the surface of a paper base material with a release agent such as silicone resin, polyester resin, amino alkyd resin, or fluororesin, but since the amount of coating is small, the release function is fully demonstrated. It is necessary for the release agent to be effectively retained on the surface without penetrating into the paper layer. For this reason, the base paper used as the base material is required to have high barrier properties. The barrier property mentioned above means the property of having low air permeability and high smoothness necessary for uniform application of the release agent. In addition, in order to obtain various adhesive products, it is common to use this release paper as a base material, apply adhesive, etc. on the surface coated with a release agent, and then go through a drying process. It is also common to apply a sol formulation, dry it, and gel it. Good processability is an essential condition in the release paper manufacturing process and subsequent processing processes, and it must not deteriorate workability or impair product performance or appearance. is also imposed on the release paper base paper, which is the starting material. Conventionally, two methods have been used to impart high barrier properties to release paper base paper. One method is to increase the density of the paper and reduce its air permeability by vigorously beating the stock pulp, as seen in glassine paper or tracing paper. It is also calendered to give it smoothness. The other method is to block the penetration of release agents by sealing the porous paper surface, and for this purpose, in addition to coatings such as PVA, CMC, starch, polyethylene laminates, pigment coatings, etc. is being carried out. In the first case where glassine paper is used as the base paper for direct coating of the release agent, the dimensional stability of the base paper is poor due to the use of strong beaten pulp. A major drawback is that it tends to cause problems such as curling and flatness. Pekopeko refers to the phenomenon in which unevenness occurs on the product surface due to changes in the dimensions of the paper during the application of release agents, drying, coating of adhesives, etc., and it is of course undesirable in terms of appearance along with curling. , which is viewed as a major negative factor in the suitability for post-processing such as uniform application of adhesive. Glassine paper also has problems in terms of price due to the complicated manufacturing process such as high-strength beating and super-calendering, which results in higher power consumption, lower papermaking speed, and lower production yield compared to general processed base paper. are doing. Although the second method of sealing can avoid the above-mentioned problems caused by the dimensional stability of the paper, it often requires a separate process, resulting in high costs, and it also Coatings such as these do not necessarily provide sufficient barrier properties, and when an adhesive product is stored for a long period of time, its function as a release paper may deteriorate significantly, making it practically unusable. Therefore, it is necessary to advance the beating of the base paper to some extent in both coated and coated types, and as a result, it cannot be said that the merits in terms of processability are necessarily great. In view of the current state of the prior art, the present inventors have developed a paper that does not require sealing as a separate process and has excellent processability without the problems caused by dimensional stability as seen with glassine paper. As a result of intensive research into a method for manufacturing base paper for direct coating of release agents at low cost, we found that the objective could be achieved easily and efficiently by performing two-stage processing of SP coating and Cal/SP coating. They discovered this and completed the present invention. That is, the present invention uses light beating (CSF200~
550 ml) of plain paper is used in SP using a water-soluble coating liquid containing a water-soluble polymer as its main ingredient, or a water-repellent, oil-repellent, or water-repellent agent containing a water-soluble polymer as its main ingredient.
Apply a water-based coating solution containing an oil repellent for the purpose of impregnation, dry it, and then apply a light coating of a water-soluble polymer in Cal/SP for the purpose of providing barrier properties.2
This is a step coating method. However, the effect remains the same even if Cal/SP is performed separately in the machine process that has it if necessary. The following coatings will be explained in more detail.
In the first-stage SP coating, the paper is impregnated with as much water-soluble polymer as possible, filling the voids inside the paper layer and applying the second-stage SP coating.
Ensure that Cal/SP coating is fully effective. As the SP device, normal horizontal, inclined, or vertical types can be used, but blade type coaters such as bill blades, transfer roll type coaters such as gate rolls, etc. are also sufficient. Available for use. The water-soluble polymers that are the main components of the water-soluble coating liquid in SP coating include PVA, starch,
CMC, sodium alginate, styrene maleic anhydride copolymer, etc. can be mentioned, and one type or a mixture of two or more of these can be used. The solid content concentration of the coating liquid is 2 to 10% (all percentages by weight below)
is suitable, and usually 20 to 60 g/ m2 on both sides as a liquid.
Perform SP coating. The concentration of water-soluble coating liquid for SP is 2~
The reason for setting it at 10% is as follows. In other words, if the concentration is as low as 2% or less, the sealing within the paper layer will not be done sufficiently, and as a result, the amount of liquid adhering to the subsequent Cal/SP coating will increase, leading to an increase in moisture in the paper, resulting in wrinkles and paper breakage. This is because it causes problems and makes operations difficult. In addition, if the concentration is higher than 10%, there will be frequent blocking in the dryer after SP coating and blocking in the calendar during Cal/SP coating, making operation difficult. Although the purpose of the water-soluble coating liquid for SP can be sufficiently achieved with a water-soluble polymer alone, in the present invention, it is especially preferable to add a water repellent, an oil repellent, or a water/oil repellent as a subcomponent. do. The reason for this is that adding a water repellent, oil repellent, or water/oil repellent agent during SP can reduce the amount of liquid adhering to the base paper during the subsequent Cal/SP coating, and effectively retain it on the surface layer and spread it into the paper. The ability to suppress the increase in moisture, as well as the inherent release properties of water repellents, oil repellents, or water/oil repellents, prevents blocking on dryers after SP coating and blocking on calendar rolls during Cal/SP coating. This is because paper-making properties can be improved by suppressing Furthermore, the provision of oil repellency by SP in the present invention also has a favorable barrier effect on the coatability of solvent-type release agents such as silicone resins. As this type of water repellent, oil repellent, or water/oil repellent, the following wax-based emulsions or organic fluorine-based compounds are used. Wax emulsions used as water repellents (hereinafter referred to as water repellents) include paraffin wax emulsions,
Examples include low molecular weight polyethylene wax emulsion, microcrystalline wax emulsion, and carnauba wax emulsion. Organic fluorine compounds used as oil repellents, water repellents, and oil repellents (hereinafter referred to as oil repellents, water repellents, and oil repellents) include acrylic acid, methacrylic acid,
In addition to polymeric compounds with a fluorocarbon group having 6 to 12 carbon atoms in the main chain consisting of vinyl alcohol, epoxide, fumaric acid, etc., water-soluble compounds such as perfluoroalkyl phosphates or perfluoroalkyl sulfonic acid amide phosphates Examples include water-soluble compounds such as aqueous salts, perfluoroalkyl monocarboxylic acid derivatives, perfluoroalkyl amines, and perfluoroalkoxyalkyl carbamates. An aqueous solution or emulsion of these is added to the water-soluble polymer in an amount of 30% or less in terms of solid content. Using a large amount of 30% or more in combination will cause repellency problems when applying the release agent, resulting in undesirable results in terms of releasability. This is because the problem of repelling cannot be completely resolved. The Cal/SP coating in the latter stage of the present invention is carried out primarily for the purpose of imparting barrier properties to paper. Cal・
An ordinary multi-roll machine calender can be used as the SP, and the aqueous coating liquid is supplied to the paper at the relatively front nip between the rolls. Calendar pressure should be 2 kg/cm or more. Water-soluble polymer for Cal/SP coating
Examples include PVA, starch, CMC, sodium alginate, and styrene/maleic anhydride copolymer. These can be used alone or in combination depending on the purpose, and if necessary, dyes, pigments, etc. can also be used in combination to produce colored release paper base paper. Cal/SP coating is extremely effective in reducing air permeability, and the air permeability after SP coating is 5
The air permeability can be reduced by up to 50 times, making it possible to easily impart air permeability comparable to that of glassine to plain paper. Furthermore
The effects of Cal/SP coating are as follows. As mentioned above, SP coating liquid contains water repellent, oil repellent, water repellent,
The main purpose of using an oil repellent in the practice of the present invention is to improve papermaking properties, and at the same time, it is preferable from the viewpoint of imparting solvent barrier properties to the base paper. This causes problems with the release agent being repelled, making it unsuitable for release coating. However, as a result of imparting barrier properties with Cal/SP, the water or oil repellent exposed on the surface is coated with a water-soluble polymer, which is its main component, to repel the release agent coating solution. You can solve the problem soon. Cal/SP coating also has excellent ironing effect (heat pressure setting in the presence of appropriate water).
This process provides tightness and smoothness comparable to super calendering, and also improves the processing stability of the base paper, which was a drawback with conventional coating methods, and is highly effective in reducing curls and smudges. do.
In other words, the effect of heat-pressure coating between metal rolls of barrier imparting liquid using Cal SP on paper quality is essentially different from that of conventional air knife, Mayer bar, and blade coatings that do not involve forced pressure. . This is essentially different from the Cal/SP coating of the present invention. In the Cal/SP coating of the present invention, the solid content concentration
Use a 0.5 to 5% water-soluble coating liquid and apply a coating amount of 3.
Keep it within the range of ~20g/m 2 (one side). This is to reduce the amount of coating liquid deposited per unit area and to prevent wrinkles and blocking caused by moisture even when the base paper is thin. Cal/SP of 3 to 20g/ m2
The amount of liquid applied corresponds to approximately 13% or less of the moisture in the paper. In the present invention, Cal・SP
By reducing the air permeability of the base paper before treatment and using an appropriate amount of water repellent or water/oil repellent, lightweight coating with Cal/SP is possible. The Cal/SP coating method of the present invention has originally been used as a surface treatment method for thick paper such as paperboard and cartons, for example, to improve water repellency, gloss, and smoothness. However, using this on ordinary thin paper (45-120g/m 2 ) causes wrinkles and
This is considered impossible due to problems such as paper breakage, and there have been no examples of its use for special purposes such as imparting barrier properties to release paper using a thin material as in the present invention. In the present invention, Cal/SP coating allows single-sided coating by supplying the coating liquid to only one side of the paper, and it is also possible to coat both sides of the paper by supplying different types of coating liquids to both sides of the paper. It is possible. Cal/SP coating can also be done off-machine instead of on-machine. Plain paper can be used as the base paper for direct coating of the release agent of the present invention, and there are no particular regulations regarding the type of pulp, filler, presence or absence of dye, internal additive size prescription, etc. In order to maintain the penetration of the water-soluble coating liquid and the strength of the paper, the addition rate of the internal additive size is
It is desirable that the filler content is 0.5% or less (based on pulp) and the filler addition rate is 20% or less. In addition, the softness of the pulp is 200
A range of ~550ml CSF is preferred. Base paper basis weight is 45
It can be used with any basis weight up to 120g/ m2 ,
If the basis weight is lower than 45g/ m2 , paper breaks will occur frequently, making papermaking practically impossible, and the upper limit of 120g/m2
m 2 is defined as the maximum basis weight of thin release paper currently in general use. The base paper for direct coating with a release agent, which has low air permeability, high smoothness, and high barrier properties, is made by applying a two-stage coating of SP and Cal-SP to plain paper obtained in this way, and is easy to process and economical. It has clear superiority over the glassine paper and sealing treated paper that have been used in this field in terms of both properties and can be said to have made an extremely large contribution to the release paper field. Examples will be described below. The various tests in the examples were conducted as follows. 1) to 2) are JIS
It was carried out based on the following. 1 Smoothness: 500mm water column back pressure type air micrometer using Beck scale (JIS-
P8119) Measurement was performed using an Oken type smoothness meter (Model BK 65 manufactured by Asahi Seiko Co., Ltd., measurement range 1 second to 50,000 seconds). 2 Air permeability: Oken type air permeability meter (KG2 type manufactured by Asahi Seiko Co., Ltd., measuring range from 1 second to 1 million seconds) with Galle densometer scale (JIS-P8117) using a 500 mm water column back pressure air micrometer. ) was measured. 3 Peeling resistance: Using Tensilon UTM4 (manufactured by Toyo Baldwin) tensile testing machine, sample width 20mm, peeling angle 180°, tensile speed
Peeling force g/ under the condition of 1000mm/mim
Measured 20mm. Measurements were carried out both immediately after and one week after the adhesive processing. 4 Processing suitability evaluation: Processing suitability such as release agent coating and adhesive coating (operability, product curl,
pecopeco) was determined and evaluated visually. Example 1 Pulp composition N/BKP 50%, L/BKP 50%, freeness 300ml CSF raw material pulp, acidic sizing (sulfuric acid fixation) with rosin size 0.4% (based on pulp), basis weight 70g/ A water-soluble coating solution having the following liquid composition was applied with SP to m 2 of ordinary fourdrinier machine-made high-quality paper, and after drying with a multi-barrel cylinder dryer, further Cal SP coating was applied. Composition of water-soluble coating liquid for SP: PVA (product name PVA105, manufactured by Kuraray Co., Ltd.) 8.0% (solid content concentration) CMC (product name SPP15, manufactured by Sanyo Kokusaku Pulp Co., Ltd.)
0.5% (solid content concentration) Fluorinated water/oil repellent (product name FP130, manufactured by Sumitomo Chemical Co., Ltd.) 0.3% (solid content concentration) Barrier imparting liquid composition for Cal/SP; PVA (product name P700, Japan) Synthetic Chemical Co., Ltd.) 1.0%
(Solid content concentration) CMC (product name AOIH, manufactured by Sanyo Kokusaku Pulp Co., Ltd.) 0.5
% (solid content concentration) The amount of chemical solution deposited on both sides was approximately 35 g/m 2 and approximately 10 g/m 2 in SP coating and Cal/SP coating, respectively. At this time, there were no problems such as blocking or paper breakage during paper making. The obtained base paper has an air permeability of 45000
It exhibited a smoothness of 530 (W side) to 550 (F side) seconds, and exhibited surface properties comparable to glassine paper and excellent barrier properties. Next, using this base paper for direct coating, an addition reaction type silicone solution (trade name KS-772), manufactured by Shin-Etsu Chemical Co., Ltd.
was diluted to a silicone concentration of 5% and coated using a Mayer bar coater so that the silicone coating amount was 1.0 g/m 2 . Drying and curing conditions after silicone coating were 120°C and 20 seconds. At this time, no clouding or falling off of the silicone surface was observed either immediately or over time (1 month), and the cure and adhesion properties were good.
Next, we used a solvent-based acrylic adhesive (trade name: BPS-5127,
Apply 37.5% stock solution (manufactured by Toyo Ink Co., Ltd.) using an applicator (clearance 125/1000 mm),
After drying at 100℃ for 2 minutes,
KYP66.3g/ m2 (manufactured by Sanyo Kokusaku Pulp Co., Ltd.) was bonded together and the peel resistance was measured. As a result, the peel resistance was 23 g/20 mm immediately after, and 26 g/20 mm after one week, which was a satisfactory value almost equal to that of glassine type base paper. It should be noted that there was almost no occurrence of curling or sagging after the silicone coating process and adhesive processing, and the processing performance was extremely superior compared to the case of glassine. In addition, 1.0 g/ m2 of solvent-free silicone (product name KNS204, manufactured by Shin-Etsu Chemical Co., Ltd.) was coated on the same base paper for direct coating using an offset gravure method, dried at 170°C for 20 seconds, and then coated as described above. The coating properties and peeling performance were evaluated in the same manner as in the case of solvent-based silicones. As with the solvent-type silicone, the peel resistance after one week was as light as 26 g/20 mm, and there was almost no curling or sagging of the release paper after the silicone coating process and adhesive processing. Example 2 The pulp used was a mixture of 20% N/BKP and 80% L/BKP, and the softness of the pulp was 450ml CSF.The basis weight of the base paper was
It was set to 110g/ m2 . The internal sizing agent is alkyl ketene dimer (product name SPK.901 manufactured by Arakawa Chemical Co., Ltd.).
0.05% (based on pulp), and the fixing agent is polyamide epichlorohydrin resin (trade name Kaimen).
557H, manufactured by Deitz Hercules Co., Ltd., was used at the addition of 0.1% (based on pulp). The paper was made in the same manner as in Example 1, and the following chemical composition was used for SP and Cal/SP coating. Composition of water-soluble coating liquid for SP; PVA (product name N.300, manufactured by Nippon Gosei Kagaku Co., Ltd.) 3.0%
(Solid content concentration) CMC (product name SPP15, manufactured by Sanyo Kokusaku Pulp Co., Ltd.)
0.5% (solid content concentration) Fluorine-based water and oil repellent (product name FP130, manufactured by Sumitomo Chemical Co., Ltd.) 0.3% (solid content concentration) Barrier imparting liquid composition for Cal/SP; PVA (product name P700, Japan) Synthetic Chemical Co., Ltd.) 2.5%
(Solid content concentration) CMC (product name AOIH, manufactured by Sanyo Kokusaku Pulp Co., Ltd.) 0.5
% (solid content concentration) The obtained base paper has an air permeability of 12000 seconds and a smoothness of 460.
(W surface) to 540 (F surface) seconds. The base paper for direct coating was coated with solvent-based silicone under the same conditions as in Example 1, and then coated with an adhesive to evaluate its release properties. The results showed that there was no clouding or falling off of the silicone surface, and the cure and adhesion were both good.The peel resistance immediately after applying the adhesive and after one week was 29 g/20 mm and 34 g/20 mm, respectively, indicating good peelability. . In this case as well, there was almost no curling or sagging during silicone coating or after adhesive processing, and the processability was excellent. In this example, SP coating,
After drying, the roll was taken separately and off-machine coating of Cal/SP was also carried out. The resulting base paper for direct coating of release agent has an air permeability of 12000 and a smoothness of 460 (W side).
It exhibited a barrier property of ~540 (F side) seconds, and the peel resistance (over time) after silicone coating was 38 g/20 mm, which was equivalent to the evaluation of on-machine Cal/SP coating. Example 3 The papermaking conditions such as pulp composition, basis weight of freeness, and internal addition size were the same as in Example 2, but the composition of the water-soluble coating liquid for SP was changed to the product name PVA (N300, manufactured by Nippon Gosei Co., Ltd.).
and CMC (trade name: AOIH, manufactured by Sanyo Kokusaku Pulp Co., Ltd.) are two components of a fluorine-based water and oil repellent (trade name:
FP.130 (manufactured by Sumitomo Chemical Co., Ltd.) was additive-free. Cal・
The composition of the SP barrier imparting liquid was in accordance with Example 2. The barrier properties of the resulting base paper for direct coating are determined by its air permeability.
12,500 seconds and smoothness of 480 (W surface) to 560 (F surface) seconds, with almost no difference from Example 2 in which a fluorine-based water and oil repellent was used in combination. However, only the low peeling resistance after adhesive processing is within the range that does not pose a problem as a release paper, but immediately after 33
g/20mm, and 39g/20mm after one week, showing slightly heavy peelability. In addition, the blocking state in the SP and Cal/SP coating processes during papermaking is slightly higher than in Example 2 or 3, due to the fluorine-based water/oil repellent or wax-based water repellent in the SP coating of the present invention. It can be said that the combined use of these agents is clearly preferable in terms of paper-making properties. Example 4 This example is an example of application to an extremely thin material with a basis weight of 45 g/m 2 . The pulp used is N/BKP60%, L/
Contains 40% BKP, and the pulp softness is 200ml.
The CSF and internal addition size were the same acidic formulation (rosin, sulfuric acid) as in Example 1. The SP and Cal-SP coating liquids were in accordance with Example 1. At this time, the chemical adhesion amount for SP and Cal SP was 27 g/m 2 for the former and 7 g/m 2 for the latter on both sides, and there were no problems such as blocking or paper breakage during paper making, and the paper making went smoothly. . The resulting base paper for direct coating of release agent has an air permeability of 310,000.
It exhibited extremely excellent barrier properties with a smoothness of 600 (W surface) to 650 (F surface) seconds. This base paper directly coated with a release agent was coated with a solvent-based silicone under the same conditions as Example 1, and then coated with an adhesive to evaluate its release properties. Cloudy silicone surface,
There was no shedding, good curing and adhesion, hardly any curling or sagging after the silicone coating process or adhesive coating, and processability was extremely good.
Peeling resistance is 18g/20mm immediately and 20g/20mm after one week.
mm and better values than glassine were obtained. In addition, we also attempted papermaking with a paper weight of 35 g/m 2 in search of the possibility of lower basis weight, but the results showed that the water content in the paper increased with Cal/SP (Cal/SP liquid adhesion amount was 7 g/m 2 paper). Frequent wrinkles due to water content (equivalent to approximately 17%)
Blocking and paper breakage occurred repeatedly, and the product could not be wound. Example 5 This example is an example in which a filler was internally added to the base paper. The pulp used was a mixture of 20% N/BKP and 80% L/BKP, and the pulp softness was 400ml CSF. The filler is 15% talc (product name SWS manufactured by Nippon Talc Co., Ltd.) in the paper.
I added it as a goal. The internal addition size was the same acidic formulation (rosin, sulfuric acid band) as in Example 1. The basis weight is
The coating weight was 110 g/m 2 , and the SP and Cal/SP coating solutions were in accordance with Example 2. At this time, operability at SP and Cal-SP went smoothly without any particular problems. The obtained base paper for direct coating showed good barrier properties with an air permeability of 9000 seconds and a smoothness of 520 (W side) to 580 (F side) seconds. This directly coated base paper was coated with solvent-based silicone and adhesive under the same conditions as Example 1, and its releasability was evaluated. There was no clouding or falling off of the silicone surface, and the cure property and adhesion were good. There was hardly any curling or sagging after the silicone coating process or the adhesive coating, and the workability was extremely good. Peeling resistance is 40g/20mm immediately and 45g/20mm after one week.
Although it showed a slightly heavy value of 20 mm, it was sufficiently practical for medium to heavy peeling. Comparative Example 1 The barrier properties and release agent direct coating performance of commercially available glassine paper (Company A) are shown in comparison with the examples. Basis weight is 85g/
m2 , air permeability is 10000 seconds, smoothness is 390 (W surface) ~ 400
(F side) It was seconds. Solvent-based silicone coating and adhesive coating were carried out under the conditions of Example 1 using the base paper for direct coating. Peel resistance immediately after: 22g/20mm,
After one week, the weight was 23 g/20 mm, but there were extremely many curls and flops after the silicone coating process and adhesive coating, which was extremely inferior to Examples 1 to 5 of the present invention. Comparative Example 2 This is a case of general machine calendered paper in which only SP coating was applied without performing two-stage coating with SP and Cal SP of the present invention. The paper-making conditions were the same as in Example 2 except that Cal and SP were cut. Further, the coating conditions and quality evaluation of silicone and adhesive were the same as in Example 1. The obtained base paper has an air permeability of 550 seconds and a smoothness of 45 (W
surface) to 55 (F surface) seconds, the barrier properties are extremely low.
Peel resistance after adhesive coating became unmeasurable due to separation between paper layers, clearly demonstrating the superiority of the SP, Cal/SP two-stage coating of the present invention. Comparative Example 3 This comparative example is a case where the concentration of the water-soluble coating agent for SP was lower than the claim 1 (2 to 10%). The basis weight was 70 g/m 2 , and the papermaking conditions were all the same as in Example 1, except that the liquid composition of the SP water-soluble coating agent was a dilute solution shown below. Composition of water-soluble coating liquid for SP: PVA (product name PVA105 manufactured by Kuraray Co., Ltd.) 1.0 (solid content concentration) Fluorine-based water/oil repellent (product name FP・130, manufactured by Sumitomo Chemical Co., Ltd.) 0.3 (solid content) In this case, SP coating progressed smoothly, but Cal.
With SP coating, many wrinkles and paper breakage occurred, making it impossible to make paper. This is because the concentration of the water-soluble coating liquid for SP is low, so sufficient air permeability cannot be obtained, and the amount of liquid adhering to Cal/SP coating increases, resulting in extremely high moisture content in the paper (20
g/m 2 (equivalent to approximately 22% moisture in the adhered paper), making operation difficult. Furthermore, as a case where the concentration of the SP coating liquid is higher than that in claim 1, PVA・105 in the above formulation is 12
%. In this case SP
Blocking occurred frequently in both the drying process after coating and the Cal/SP process, and normal winding could not be obtained. Comparative Example 4 This comparative example is a case where the water/oil repellent added to the water-soluble SP coating liquid exceeds the regulation in claim 1 (0 to 30% of the solid content of the SP coating liquid). be. The papermaking conditions were as follows: The concentration of FP-130 (trade name, manufactured by Sumitomo Chemical Co., Ltd.) as a fluorine-based water/oil repellent added to the water-soluble coating liquid for SP was 0.3 to 1.8% (based on the total solid content of the SP liquid). Example 2 was followed except that the amount was increased to 34%). Further, the coating conditions for silicone and adhesive and the evaluation of paper quality were in accordance with Example 1. The barrier properties of the obtained base paper for direct coating with release agent are as follows:
Air permeability 10500 seconds, smoothness 450 (W side) ~ 510 (F side)
There is almost no difference from Example 2 in seconds. However, the adhesive peeling resistance immediately after silicone coating was 75g/20mm.
After one week, it was extremely heavy at 95 g/20 mm, and the variation in peel resistance of each individual was significantly beyond the practical range. This base paper had a severe repellency phenomenon of the coating liquid when it was coated with silicone, which disturbed the formation of the silicone coating and deteriorated the release properties. Comparative Example 5 The raw material pulp was a mixture of 20% N-BKP and 80% L-BKP, and a paper with a beating degree of 500 ml CSF and a basis weight of 180 g/m 2 was made. The internal addition size was the same neutral formulation as in Example 2. The compositions of SP and Cal/SP coating fluids are as follows. Composition of water-soluble coating liquid for SP; Oxidized starch (product name: S-Suncizer 700,
Manufactured by Ajinomoto Co., Inc.) 5.0% (solid content concentration) PVA (product name N.300, manufactured by Nippon Gosei Kagaku Co., Ltd.) 1.0% (solid content concentration) Styrene maleic anhydride copolymer (product name Sumiretsu Resin 402) , manufactured by Sumitomo Chemical Co., Ltd.) 0.7% (solid content concentration) Water repellent wax emulsion (trade name: Digit-EY, manufactured by Gooh Chemical Co., Ltd.) 1.0% (solid content concentration) Barrier imparting liquid for Cal/SP Composition; PVA (trade name P700, manufactured by Nippon Gosei Kagaku Co., Ltd.) 2.5% (solid content concentration) Styrene maleic anhydride copolymer (trade name Sumiretstsu Resin 402, manufactured by Sumitomo Chemical Co., Ltd.) 0.5 (solid content concentration) ) The obtained base paper for direct coating has an air permeability of 4000 seconds and a smoothness.
It was 250 (W side) to 270 (F side) seconds. As in Example 1, a solvent-type silicone was coated and the release characteristics were evaluated. The results showed that the silicone surface did not become cloudy or fall off, and the cure and adhesion were good. Peeling resistance was 45g/20mm immediately and 55g/20mm after one week.
At 20 mm, it was a little heavier than glassine paper, but it showed release characteristics that could be used for heavy release applications. In this comparative example as well, no curling or sagging was observed after the silicone coating process and the adhesive process, and the processability was good. Next, as a release agent, a toluene mixed solution of an alkyd resin (trade name Tespiel SP2504, manufactured by Tokushima Essential Oils Co., Ltd.) and a hardening agent (trade name Dryer 50, manufactured by Tokushima Essential Oils Co., Ltd.) was added at a solid content of approximately 2.5 g/m 2 Coated with Mayer bar,
It was dried at 150°C for 1 minute. Apply PVC paste with the following formulation on this release paper: 100 parts (product name: Zeon #121, manufactured by Nippon Zeon Co., Ltd.), 100 parts (product name: Escalon #600, manufactured by Sankyo Seibo Co., Ltd.), 70 parts DOP, 60 parts zinc stearate, 3 parts stearic acid. Apply 2 parts of barium to the applicator (clearance 250/1000mm)
and dried at 210°C for 2 minutes. The peel resistance against PVC leather was 25 g/20 mm, and it could be used repeatedly up to 10 times. In addition, Examples and Comparative Examples are listed together in the following table.
【表】【table】
【表】【table】
Claims (1)
550mlの木材パルプを80〜100重量％含有している
紙に、撥水剤、撥油剤若しくは撥水・撥油剤を塗
工液固形分の０〜30重量％含有し全固形分濃度が
２〜10重量％のポリビニルアルコール、変性ポリ
ビニルアルコール、デンプン、デンプン誘導体、
カルボキシメチルセルロース、アルギン酸ナトリ
ウム、スチレン・無水マレイン酸共重合体の群か
ら選ばれた単独若しくは混合物から成る水溶性塗
工液をサイズプレスにて20〜60ｇ／m2の割合で紙
の両面に塗工し、次いで更にその上面にオンマシ
ン若しくはオフマシンカレンダーサイズプレスで
ポリビニルアルコール、変性ポリビニルアルコー
ル、デンプン、デンプン誘導体、カルボキシメチ
ルセルロース、アルギン酸ナトリウム、スチレ
ン・無水マレイン酸共重合体の群から選ばれた単
独若しくは混合物から成るバリヤー付与液を片面
当り３〜20ｇ／m2の割で紙の片面若しくは両面に
塗工することを特徴とする高度なバリヤー性を有
する剥離剤直塗工用原紙の製造方法。 ２ 撥水剤がワツクス系エマルジヨンである特許
請求の範囲第１項記載の剥離剤直塗工用原紙の製
造方法。 ３ 撥油剤が有機系フツ素化合物である特許請求
の範囲第１項記載の剥離剤直塗工用原紙の製造方
法。 ４ 撥水・撥油剤が有機系フツ素化合物である特
許請求の範囲第１項記載の剥離剤直塗工用原紙の
製造方法。 ５ バリヤー性がＪ・TAPPI No.５−Ｂに規定
する透気度で3000〜500000秒である特許請求の範
囲第１項ないし第４項中の何れか１項に記載の剥
離剤直塗工用原紙の製造方法。[Claims] 1. The basis weight is 45 to 120 g/m 2 and the beating degree is CSF 200 to 200.
550ml of paper containing 80 to 100% by weight of wood pulp is coated with a water repellent, oil repellent, or water/oil repellent at 0 to 30% by weight of the solid content of the coating liquid, and the total solid concentration is 2 to 30% by weight. 10% by weight polyvinyl alcohol, modified polyvinyl alcohol, starch, starch derivatives,
A water-soluble coating solution consisting of one or a mixture selected from the group of carboxymethyl cellulose, sodium alginate, and styrene/maleic anhydride copolymer is applied to both sides of the paper at a rate of 20 to 60 g/m 2 using a size press. Then, on the top surface of the polyvinyl alcohol, modified polyvinyl alcohol, starch, starch derivatives, carboxymethyl cellulose, sodium alginate, styrene/maleic anhydride copolymer or the like is added to the top surface using an on-machine or off-machine calender size press. A method for producing base paper for direct coating with a release agent having high barrier properties, which comprises applying a barrier-imparting liquid consisting of a mixture to one or both sides of paper at a rate of 3 to 20 g/m 2 per side. 2. The method for producing a base paper for direct coating with a release agent according to claim 1, wherein the water repellent is a wax emulsion. 3. The method for producing a base paper for direct coating with a release agent according to claim 1, wherein the oil repellent is an organic fluorine compound. 4. The method for producing a base paper for direct coating with a release agent according to claim 1, wherein the water/oil repellent is an organic fluorine compound. 5 Direct coating of the release agent according to any one of claims 1 to 4, which has barrier properties of 3,000 to 500,000 seconds in terms of air permeability as defined in J. TAPPI No. 5-B. Method of manufacturing base paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58014563A JPS59144693A (en) | 1983-02-02 | 1983-02-02 | Production of base paper for direct coating of release agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58014563A JPS59144693A (en) | 1983-02-02 | 1983-02-02 | Production of base paper for direct coating of release agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59144693A JPS59144693A (en) | 1984-08-18 |
| JPH0317958B2 true JPH0317958B2 (en) | 1991-03-11 |
Family
ID=11864619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58014563A Granted JPS59144693A (en) | 1983-02-02 | 1983-02-02 | Production of base paper for direct coating of release agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144693A (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01210487A (en) * | 1988-02-16 | 1989-08-24 | Kanzaki Paper Mfg Co Ltd | Release paper for self-adhesive paper |
| JPH01223184A (en) * | 1988-03-01 | 1989-09-06 | Kanzaki Paper Mfg Co Ltd | Releasing paper for tacky adhesive paper |
| FR2688512B1 (en) * | 1992-03-11 | 2002-01-18 | Elf Aquitaine | PROCESS FOR THE PROTECTION OF SOLID SURFACES, PARTICULARLY COASTAL AREAS AGAINST HYDROCARBON POLLUTION. |
| JP4142148B2 (en) * | 1997-03-26 | 2008-08-27 | 日本合成化学工業株式会社 | Paper processing composition |
| JP4142147B2 (en) * | 1998-02-19 | 2008-08-27 | 日本合成化学工業株式会社 | Release paper |
| FI116087B (en) * | 2000-01-26 | 2005-09-15 | Upm Kymmene Corp | Base paper, process for its manufacture and release paper |
| JP4520138B2 (en) * | 2003-12-05 | 2010-08-04 | 日本製紙パピリア株式会社 | Oil resistant paper |
| JP4588557B2 (en) * | 2005-06-28 | 2010-12-01 | 北越紀州製紙株式会社 | Process release paper base for forming carbon fiber reinforced resin and method for producing the same |
| JP4764839B2 (en) * | 2007-02-08 | 2011-09-07 | 大王製紙株式会社 | Process release paper |
| JP5019953B2 (en) * | 2007-05-31 | 2012-09-05 | リンテック株式会社 | Release paper, paper adhesive tape and method for producing release paper |
| JP5376204B2 (en) * | 2008-02-06 | 2013-12-25 | 荒川化学工業株式会社 | Barrier agent for resin-coated paper, polyethylene laminate coated paper, and silicone release paper |
| CN103669105B (en) * | 2013-11-14 | 2016-04-13 | 华南理工大学 | A kind of greaseproof paper and production method thereof |
| CN105986504B (en) * | 2015-02-06 | 2018-05-11 | 宁波宝新不锈钢有限公司 | A kind of manufacture method of hydrophily stainless steel packing paper |
| JP6991831B2 (en) * | 2016-11-08 | 2022-01-13 | 恵和株式会社 | Process paper for forming polyurethane coat layer |
| JP7136414B2 (en) * | 2018-11-26 | 2022-09-13 | リンテック株式会社 | greaseproof paper |
-
1983
- 1983-02-02 JP JP58014563A patent/JPS59144693A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59144693A (en) | 1984-08-18 |
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