JP2823907B2 - Adhesive sheet and method for producing the same - Google Patents
Adhesive sheet and method for producing the sameInfo
- Publication number
- JP2823907B2 JP2823907B2 JP29555789A JP29555789A JP2823907B2 JP 2823907 B2 JP2823907 B2 JP 2823907B2 JP 29555789 A JP29555789 A JP 29555789A JP 29555789 A JP29555789 A JP 29555789A JP 2823907 B2 JP2823907 B2 JP 2823907B2
- Authority
- JP
- Japan
- Prior art keywords
- sensitive adhesive
- pressure
- adhesive sheet
- treatment liquid
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 「産業上の利用分野」 本発明は、粘着シートに関し、特にカールの発生や複
写機での通紙時のジャミングがなく、転写・定着プロセ
スにおいて、トナーの定着性に優れた粘着シートに関す
るものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive sheet, and particularly to a fixing property of a toner in a transfer / fixing process without curling or jamming during paper passing in a copying machine. It relates to an excellent adhesive sheet.
「従来の技術」 粘着シートは商業用、事務用、家庭用等非常に広範囲
な用途にラベル、ステッカー、ワッペン、配送伝票等と
して使用されている。そして近年、電子写真複写機で所
望の画像を複写して簡便な印刷シールラベルあるいは宛
名シールラベルとして利用される粘着シートの需要が急
速に伸びつつある。[Background Art] Adhesive sheets are used as labels, stickers, patches, delivery slips, and the like for a very wide range of uses such as commercial use, office use, and home use. In recent years, the demand for an adhesive sheet which is used as a simple print sticker label or address sticker label by copying a desired image with an electrophotographic copying machine has been rapidly growing.
粘着シートは、表面基材と剥離シートとの間に粘着剤
層を形成したものであり、表面基材には紙、フィルム、
金属フォイル等が用いられ、剥離シートとしてはグラシ
ン紙のような高密度原紙、クレーコート紙、ポリラミ原
紙等にシリコーン化合物や弗素化合物の如き剥離剤を塗
布したものが使用される。また粘着剤としては、溶剤型
粘着剤、エマルジョン型粘着剤、ホットメルト型粘着剤
等が使用される。The pressure-sensitive adhesive sheet has a pressure-sensitive adhesive layer formed between the surface base material and the release sheet, and the surface base material includes paper, film,
A metal foil or the like is used, and a release sheet obtained by applying a release agent such as a silicone compound or a fluorine compound to a high-density base paper such as glassine paper, clay-coated paper, or polylaminate base paper is used. As the pressure-sensitive adhesive, a solvent-type pressure-sensitive adhesive, an emulsion-type pressure-sensitive adhesive, a hot-melt-type pressure-sensitive adhesive, or the like is used.
かかる粘着シートは、カールが発生しやすい為複写機
中で通紙不良をおこす欠点があった。即ち、粘着シート
の一般的な製造工程では、通常剥離基体に剥離剤を塗布
乾燥し、この剥離剤層上に粘着剤を塗布乾燥した後、表
面基材と貼り合わされる。このため、剥離基体はこれら
の乾燥工程において収縮しており、外部環境の変化等で
偏った吸湿、吸水が起こると、直ちにカールが発生して
しまう。特に、剥離基体としてグラシン紙のような重叩
解、高密度の紙を使用した場合には、乾燥時の収縮率が
高いため、吸湿、吸水あるいは再乾燥によって起こる繊
維の膨潤や収縮を吸収すべき空隙が極めて少なく、結果
的にカールの発生がとりわけ著しいという欠点が存在す
る。Such a pressure-sensitive adhesive sheet has a drawback of causing a paper passing failure in a copying machine because curling is likely to occur. That is, in a general manufacturing process of a pressure-sensitive adhesive sheet, a release agent is usually applied to a release substrate and dried, and then the pressure-sensitive adhesive is applied and dried on the release agent layer and then bonded to a surface substrate. For this reason, the release substrate shrinks in these drying steps, and if uneven moisture absorption or water absorption occurs due to a change in the external environment or the like, curling is immediately generated. In particular, when heavy beaten or high-density paper such as glassine paper is used as the release substrate, the shrinkage ratio during drying is high, so the swelling and shrinkage of the fiber caused by moisture absorption, water absorption or re-drying should be absorbed. There is the disadvantage that the voids are very small and consequently curling is particularly pronounced.
このような粘着シートのカールは、複写機で複写する
際の通紙不良や転写不良を起こす他、例えば粘着シート
に印刷、ダイカット、シートカット等の処理を施してラ
ベルやシール等に加工する段階でも給紙不良、紙不揃
い、印刷ずれ等のトラブルを起こし、作業適性及び品質
面において極めて重大な障害となっていた。Such curl of the adhesive sheet causes poor paper passing and poor transfer when copying with a copying machine, and, for example, printing, die cutting, sheet cutting, and the like on the adhesive sheet to process them into labels and seals. However, it causes troubles such as poor paper feed, paper misalignment, and printing misalignment, and has been a very serious obstacle in workability and quality.
従来、粘着シートのカールを矯正するために、粘着シ
ートをカール方向とは逆の方向に鋭角的に曲げるカール
ブレーカーの使用、エアーコンディショナーの付設やス
チームダンピングを行う方法等が提案されているが、工
程の複雑さが伴い、効果の点でも不充分であった。Conventionally, in order to correct the curl of the pressure-sensitive adhesive sheet, the use of a curl breaker that sharply bends the pressure-sensitive adhesive sheet in a direction opposite to the curl direction, a method of attaching an air conditioner and performing a method of steam damping have been proposed. The process was complicated and the effect was insufficient.
また、剥離基体裏面への水塗り等の方法でカールを矯
正を行う場合は、その効果が強すぎる為、剥離基体側へ
のカールが大きくなり過ぎ、複写機での通紙時のジャミ
ングトラブルを引き起こすのが現状であった。Further, when the curl is corrected by a method such as water coating on the back surface of the peeling substrate, the effect is too strong, and the curl on the peeling substrate side becomes too large. It was the current situation to cause.
更に、表面基材として例えば上質紙を用いた粘着シー
トにおいては、電子写真複写機の感光体上のトナーを表
面基材に転写・定着させるプロセスにおいて、トナーガ
表面基材に充分定着しないという難点があった。Further, in the case of an adhesive sheet using, for example, high-quality paper as the surface base material, the process of transferring and fixing the toner on the photoreceptor of the electrophotographic copying machine to the surface base material has a disadvantage that the toner is not sufficiently fixed to the toner base material. there were.
「発明が解決しようとする課題」 かかる現状に鑑み、本発明者らは粘着シートのカール
や複写機での通紙時のジャミングがなく、転写・定着プ
ロセスにおいて、トナーの定着性を向上させることを目
的とし、鋭意研究の結果、表面基材の粘着材を積層しな
い面に、特定の単量体を乳化共重合してなる特定のガラ
ス転移温度を有するアクリル酸エステル共重合体エマル
ジョンを主成分とする処理液を、塗布または含浸し、且
つ剥離基体の剥離材を積層しない面に、水溶性可塑剤を
主成分とする処理液を塗布または含浸させることによ
り、上記の如き難点が極めて効率良く解消されることを
見出し、本発明を完成するに至った。"Problems to be Solved by the Invention" In view of this situation, the present inventors have found that there is no curling of an adhesive sheet or jamming at the time of paper passing in a copying machine, and that the fixing property of toner is improved in a transfer / fixing process. As a result of intensive research, an acrylic ester copolymer emulsion with a specific glass transition temperature obtained by emulsion copolymerization of a specific monomer on the surface of the surface base material where the adhesive is not laminated is the main component. By applying or impregnating the treatment liquid to be applied or impregnated, and applying or impregnating the treatment liquid containing a water-soluble plasticizer as a main component on the surface of the release substrate on which the release material is not laminated, the above-described difficulties are extremely efficiently. The inventors have found that the present invention is solved, and have completed the present invention.
「課題を解決するための手段」 本発明は、剥離基体、剥離剤、粘着剤、表面基材を順
次積層してなる粘着シートにおいて、エチレン性不飽
和カルボン酸含有単量体及びホモポリマーのガラス転
移温度が50℃以上であるエチレン性不飽和結合含有単量
体、ならびにこれらの単量体と共重合可能な他の単量
体（但し及びの単量体の少なくとも一方にアクリル
酸エステル単量体を含む）を乳化共重合してなるアクリ
ル酸エステル共重合体エマルジョンのガラス転移温度が
０〜100℃であり、該共重合体エマルジョンを主成分と
する処理液を該表面基材の粘着剤を積層しない面に塗布
または含浸し、且つ剥離基体の剥離剤を積層しない面に
水溶性可塑剤を主成分とする処理液を塗布または含浸さ
せてなることを特徴とする粘着シートである。"Means for Solving the Problems" The present invention relates to a pressure-sensitive adhesive sheet formed by sequentially laminating a release substrate, a release agent, a pressure-sensitive adhesive, and a surface substrate, wherein an ethylenically unsaturated carboxylic acid-containing monomer and a homopolymer glass Ethylenically unsaturated bond-containing monomers having a transition temperature of 50 ° C. or higher, and other monomers copolymerizable with these monomers (provided that at least one of the monomers has an acrylic acid ester monomer Acrylate copolymer emulsion obtained by emulsifying and copolymerizing the emulsion of the present invention has a glass transition temperature of 0 to 100 ° C., and a treating solution containing the copolymer emulsion as a main component is used as an adhesive for the surface substrate. Is coated or impregnated on the surface of the release substrate on which the release agent is not laminated, and a treatment liquid containing a water-soluble plasticizer as a main component is applied or impregnated on the surface of the release substrate on which the release agent is not laminated.
「作用」 本発明では、表面基材の粘着剤を積層しない面に塗布
または含浸される化合物が特定の単量体混合物を共重合
した高分子であり、該高分子のガラス転移温度が０〜10
0℃、より好ましくは20〜70℃であるアクリル酸エステ
ル共重合体エマルジョンが選択的に使用される。かかる
特定の高分子を使用することにより、複写機でのトナー
の定着性が大幅に改良されるが、因みに、ガラス転移温
度が０℃より低くなると、皮膜の粘着性が強くなり過
ぎ、巻取り時にブロッキングを起こしたり、複写機での
通紙時に機械内部で粘着によるジャミングを起こす恐れ
があり、逆に100℃より高くなると、得られる皮膜が硬
くなり過ぎて処理液を塗布した側にカールを起こし、こ
れによりトナーの定着性が悪くなったり、通紙時にカー
ルによるジャミングを起こすといった欠点がある。した
がって、単量体組成を調節することにより本発明の所望
の効果が発現されるようにアクリル酸エステル共重合体
エマルジョンのガラス転移温度を充分調節する必要があ
る。In the present invention, the compound coated or impregnated on the surface of the surface substrate on which the adhesive is not laminated is a polymer obtained by copolymerizing a specific monomer mixture, and the polymer has a glass transition temperature of 0 to 0. Ten
An acrylic ester copolymer emulsion at 0 ° C., more preferably at 20 to 70 ° C., is selectively used. The use of such a specific polymer greatly improves the fixability of the toner in a copying machine. However, when the glass transition temperature is lower than 0 ° C., the film becomes too sticky and the film is wound up. Blocking may occur at times, and jamming may occur due to adhesion inside the machine when paper is passed through a copier.On the other hand, if the temperature is higher than 100 ° C, the resulting film becomes too hard and curls on the side where the processing liquid is applied. This has the disadvantage that the fixability of the toner is deteriorated, and jamming due to curl occurs during paper passing. Therefore, it is necessary to sufficiently adjust the glass transition temperature of the acrylate copolymer emulsion so that the desired effects of the present invention are exhibited by adjusting the monomer composition.
本発明において用いられる上記特定のアクリル酸エス
テル共重合体エマルジョンは、エチレン性不飽和カル
ボン酸含有単量体及びホモポリマーのガラス転移温度
が50℃以上であるエチレン性不飽和結合含有単量体、な
らびにこれらの単量体と共重合可能な他の単量体（但
し及びの単量体の少なくとも一方にアクリル酸エス
テル単量体を含む）から構成される。The specific acrylate copolymer emulsion used in the present invention is an ethylenically unsaturated bond-containing monomer whose glass transition temperature of an ethylenically unsaturated carboxylic acid-containing monomer and a homopolymer is 50 ° C. or higher, And other monomers copolymerizable with these monomers (provided that at least one of these monomers contains an acrylate monomer).
エチレン性不飽和カルボン酸含有単量体としては、例
えばアクリル酸、メタクリル酸、クロトン酸、マレイン
酸、イタコン酸、フマル酸、モノアルキルマレイン酸、
モノアルキルイタコン酸、モノアルキルフマル酸等が挙
げられる。勿論、必要に応じて２種以上の併用も可能で
ある。Examples of the ethylenically unsaturated carboxylic acid-containing monomer include, for example, acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid, fumaric acid, monoalkyl maleic acid,
Monoalkyl itaconic acid, monoalkyl fumaric acid and the like can be mentioned. Of course, two or more of them can be used in combination as needed.
尚、共重合体中に占める上記エチレン性不飽和カルボ
ン酸含有単量体の割合が全単量体の１重量％未満になる
と、得られた共重合体の分散安定性が不充分となり、逆
に10重量％を越えると、乾燥性が不充分となる恐れもあ
るため、エチレン性不飽和カルボン酸含有単量体は１〜
10重量％の範囲で共重合するのが望ましい。When the proportion of the ethylenically unsaturated carboxylic acid-containing monomer in the copolymer is less than 1% by weight of all monomers, the dispersion stability of the obtained copolymer becomes insufficient, and conversely. If the content exceeds 10% by weight, the drying property may be insufficient.
It is desirable to copolymerize in the range of 10% by weight.
一方、本発明で用いられるアクリル酸エステル共重合
体エマルジョンを構成するホモポリマーのガラス転移
温度が50℃以上であるエチレン性不飽和結合含有単量体
としては、例えばメタクリル酸メチル、メタクリル酸エ
チル、塩化ビニル、スチレン、（メタ）アクリロニトリ
ル、アクリル酸−tert−ブチル、メタクリル酸−iso−
プロピル等が挙げられる。勿論、必要に応じて２種以上
の併用も可能である。On the other hand, as the ethylenically unsaturated bond-containing monomer having a glass transition temperature of 50 ° C. or higher of the homopolymer constituting the acrylate copolymer emulsion used in the present invention, for example, methyl methacrylate, ethyl methacrylate, Vinyl chloride, styrene, (meth) acrylonitrile, tert-butyl acrylate, methacrylic acid-iso-
Propyl and the like. Of course, two or more of them can be used in combination as needed.
尚、共重合体中に占めるこれらのホモポリマーのガラ
ス転移温度が50℃以上であるエチレン性不飽和結合含有
単量体の割合は、全単量体の50〜90重量％の範囲で調節
されるのが望ましい。The proportion of the ethylenically unsaturated bond-containing monomer whose homopolymer has a glass transition temperature of 50 ° C. or higher in the copolymer is adjusted within the range of 50 to 90% by weight of all the monomers. Is desirable.
本発明においては、これらのホモポリマーのガラス転
移温度が50℃以上であるエチレン性不飽和結合含有単量
体の中でも、特にメタクリル酸メチル、（メタ）アクリ
ロニトリル、スチレンが共重合速度、及びガラス転移温
度等の調節の面から好ましく用いられる。In the present invention, among the ethylenically unsaturated bond-containing monomers having a glass transition temperature of 50 ° C. or higher of these homopolymers, in particular, methyl methacrylate, (meth) acrylonitrile, and styrene have copolymerization rates and glass transition temperatures. It is preferably used in terms of adjusting the temperature and the like.
また、本発明で用いられるアクリル酸エステル共重合
体エマルジョンを構成する上述の如き単量体と共重合
可能な他の単量体としては、例えば（メタ）アクリル酸
ブチル、（メタ）アクリル酸ヘキシル、（メタ）アクリ
ル酸オクチル、（メタ）アクリル酸−２−エチルヘキシ
ル、（メタ）アクリル酸ラウリル、（メタ）アクリル酸
ステアリル、アクリル酸メチル、アクリル酸エチル、
（メタ）アクリル酸プロピル、酢酸ビニル、エチレン、
ジ（メタ）アクリル酸エチレングリコール、ジ（メタ）
アクリル酸ジエチレングリコール、ジ（メタ）アクリル
酸トリエチレングリコール、ジ（メタ）アクリル酸（ポ
リ）エチレングリコール、ジ（メタ）アクリル酸プロピ
レングリコール、ジ（メタ）アクリル酸ジプロピレング
リコール、ジ（メタ）アクリル酸トリプロピレングリコ
ール、ジ（メタ）アクリル酸（ポリ）プロピレングリコ
ール、ジ（メタ）アクリル酸−1,3−ブチレングリコー
ル、トリ（メタ）アクリル酸トリメチロールプロパン、
テトラ（メタ）アクリル酸テトラメチロールメタン、ジ
ビニルベンゼン、ジ（メタ）アクリル酸−1,4−ブタン
ジオール、ジ（メタ）アクリル酸−1,6−ヘキサンジオ
ール、（メタ）アクリル酸グリシジル、（メタ）アクリ
ルアミド、Ｎ−メチロール（メタ）アクリルアミド、Ｎ
−メトキシメチル（メタ）アクリルアミド、Ｎ−ブトキ
シメチル（メタ）アクリルアミド、N,N′−メチレンビ
ス（メタ）アクリルアミド等が挙げられる。Other monomers copolymerizable with the above-mentioned monomers constituting the acrylate copolymer emulsion used in the present invention include, for example, butyl (meth) acrylate and hexyl (meth) acrylate. Octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, methyl acrylate, ethyl acrylate,
Propyl (meth) acrylate, vinyl acetate, ethylene,
Ethylene glycol di (meth) acrylate, di (meth) acrylate
Diethylene glycol acrylate, triethylene glycol di (meth) acrylate, (poly) ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, di (meth) acryl Acid tripropylene glycol, di (meth) acrylic acid (poly) propylene glycol, di (meth) acrylic acid-1,3-butylene glycol, tri (meth) acrylic acid trimethylolpropane,
Tetramethylol methane tetra (meth) acrylate, divinylbenzene, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, glycidyl (meth) acrylate, (meth) ) Acrylamide, N-methylol (meth) acrylamide, N
-Methoxymethyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide, N, N'-methylenebis (meth) acrylamide and the like.
尚、共重合体中に占める上記共重合可能な他の単量体
の割合は、全重量体の10〜60重量％の範囲で調節される
のが望ましい。勿論、必要に応じて２種以上の併用も可
能である。The proportion of the other copolymerizable monomer in the copolymer is desirably adjusted in the range of 10 to 60% by weight of the total weight. Of course, two or more of them can be used in combination as needed.
本発明においては、これらの共重合可能な他の単量体
の中でも、特にアクリル酸ブチル、アクリル酸−２−エ
チルヘキシル等が共重合速度、及びガラス転移温度等の
調節の面から好ましく用いられる。In the present invention, among these other copolymerizable monomers, butyl acrylate, 2-ethylhexyl acrylate, and the like are particularly preferably used from the viewpoint of controlling the copolymerization rate and the glass transition temperature.
本発明のアクリル酸エステル共重合体エマルジョン
は、上記の如き単量体の混合物を乳化剤、連鎖移動剤、
重合開始剤等の存在下で、水系で乳化共重合する方法で
製造される。The acrylic ester copolymer emulsion of the present invention is a mixture of the above-mentioned monomers as an emulsifier, a chain transfer agent,
It is produced by a method of emulsion copolymerization in an aqueous system in the presence of a polymerization initiator and the like.
尚、上記特定のエマルジョンを主成分とする処理液
は、塗布の安全性等の点で水系処理液として調製するこ
とが望ましい。It is desirable that the treatment liquid containing the above-mentioned specific emulsion as a main component is prepared as an aqueous treatment liquid from the viewpoint of coating safety and the like.
上記の如き処理液には、本発明の所望の効果を阻害し
ない範囲で、例えば、メチルセルロース、エチルセルロ
ース、ヒドロキシエチルセルロース、カルボキシメチル
セルロース等のセルロース誘導体、デキストリン、酸化
澱粉、架橋澱粉、エステル化澱粉、グラフト共重合澱粉
等の澱粉誘導体などの各種の水溶性天然高分子類、ポリ
ビニルアルコールをはじめとする合成高分子類、消泡
剤、浸透剤、濡れ剤、滑剤、レベリング剤、硬化剤、増
粘剤、皮膜形成助剤、帯電防止剤等を適宜添加すること
ができる。In the treatment liquid as described above, a cellulose derivative such as methylcellulose, ethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, dextrin, oxidized starch, crosslinked starch, esterified starch, and graft copolymer may be used within a range not to impair the desired effects of the present invention. Various water-soluble natural polymers such as starch derivatives such as polymerized starch, synthetic polymers such as polyvinyl alcohol, defoamers, penetrants, wetting agents, lubricants, leveling agents, curing agents, thickeners, A film forming aid, an antistatic agent and the like can be appropriately added.
かかる処理液の固形分濃度は、１〜50重量％、好まし
くは２〜20重量％の範囲となるように調製されるのが望
ましい。The solid concentration of such a treatment liquid is desirably adjusted to be in the range of 1 to 50% by weight, preferably 2 to 20% by weight.
かくして調製された処理液を表面基材に塗布または含
浸させるものであるが、方法については特に限定され
ず、例えばエアーナイフコーター、ロールコーター、ゲ
ートロールコーター、グラビアコーター、バーコータ
ー、ブレードコーター、ロッドブレードコーター、サイ
ズプレスコーター等の各種装置が適宜使用されるが、オ
フマシンコーターに限らず、抄紙機上に設置したオンマ
シンコーターで塗布してもよい。特に、表面基材が上質
紙の場合、オンマシンコーターでの塗工は、塗工直前の
紙面温度等の影響で塗布量が付け易く、乾燥性も良好な
ため好ましい実施態様の一つである。The treatment liquid thus prepared is applied or impregnated on the surface substrate, but the method is not particularly limited, for example, an air knife coater, a roll coater, a gate roll coater, a gravure coater, a bar coater, a blade coater, a rod Various devices such as a blade coater and a size press coater are appropriately used, but the coating is not limited to the off-machine coater, and may be performed by an on-machine coater installed on a paper machine. In particular, when the surface substrate is a high-quality paper, coating with an on-machine coater is one of the preferred embodiments because the coating amount is easy to apply under the influence of the paper surface temperature immediately before coating and the drying property is also good. .
表面基材への塗布または含浸量は、それぞれ乾燥重量
で0.05〜20g/m2程度の範囲で調節するのが好ましく、特
に0.1〜8g/m2程度が望ましい。Coated or impregnated amount of the surface substrate is preferably adjusted with 0.05 to 20 g / m 2 range of about each dry weight, in particular about 0.1 to 8 g / m 2 is desirable.
本発明の粘着シートにおいて、表面基材および剥離基
体としては通常の坪量30〜300g/m2程度の各種シート類
等が使用される。例えば、表面基材として、特に限定さ
れないが紙、フィルム、金属フォイル等が用いられる。In the pressure-sensitive adhesive sheet of the present invention, various sheets having a basis weight of about 30 to 300 g / m 2 are used as the surface substrate and the release substrate. For example, paper, a film, a metal foil, or the like is used as the surface substrate, although not particularly limited.
また、剥離基体としても坪量30〜300g/m2程度の上質
紙等各種繊維シート類が使用される。尚、剥離基体には
剥離剤の浸透を防止する目的で、下塗り層を形成するの
が望ましい。Various fiber sheets such as high quality paper having a basis weight of about 30 to 300 g / m 2 are also used as the release substrate. Incidentally, it is desirable to form an undercoat layer on the release substrate for the purpose of preventing penetration of the release agent.
かかる下塗り層の主成分としては、例えば分子量が10
00〜10000の乳化剤を２〜10重量％含有するガラス転移
温度−60〜０℃の水分散性アクリル酸エステル共重合体
樹脂等の高分子が使用される。下塗り層には更に必要に
より、セルロース誘導体、澱粉誘導体などの各種の水溶
性天然高分子類、ポリビニルアルコールをはじめとする
合成高分子類、消泡剤、浸透剤、濡れ剤、ブロッキング
防止のための滑剤、レベリング剤、硬化剤、増粘剤、皮
膜形成助剤、帯電防止剤、水溶性可塑剤等を含有させる
こともできる。As a main component of the undercoat layer, for example, a molecular weight of 10
Polymers such as water-dispersible acrylate copolymer resins having a glass transition temperature of -60 to 0 ° C and containing 2 to 10% by weight of an emulsifier of 100 to 10,000 are used. In the undercoat layer, if necessary, various water-soluble natural polymers such as cellulose derivatives and starch derivatives, synthetic polymers including polyvinyl alcohol, defoamers, penetrants, wetting agents, and anti-blocking agents A lubricant, a leveling agent, a curing agent, a thickener, a film forming aid, an antistatic agent, a water-soluble plasticizer, and the like can be contained.
剥離剤についても、特に限定されず、各種のシリコー
ン化合物や弗素化合物等が常法に従って塗布される。The release agent is also not particularly limited, and various silicone compounds, fluorine compounds and the like are applied according to a conventional method.
本発明の粘着シートは、剥離基体の剥離剤を積層しな
い面に水溶性可塑剤を主成分とした処理液を塗布または
含浸することにより、特にカールの発生が効果的に防止
される為、複写機での通紙時のカールによるジャミング
が極めて効率良く改善され、トナーの定着性の改良の為
に表面基材へ特定の高分子を設けたことと相まって、総
合的な複写機適性が極めて良好なものとなるものであ
る。In the pressure-sensitive adhesive sheet of the present invention, by applying or impregnating a treatment liquid containing a water-soluble plasticizer as a main component on the surface of the release substrate on which the release agent is not laminated, the occurrence of curling is particularly effectively prevented. Jamming due to curling during paper passing through the machine has been extremely efficiently improved, and combined with the provision of a specific polymer on the surface base material to improve the fixability of the toner, overall suitability for copying machines has been extremely good It is something that becomes.
本発明において用いられる水溶性可塑剤としては、例
えばエチレングリコール、グリセリン、トリメチロール
プロパン、ジエチレングリコール、トリエチレングリコ
ール、ジプロピレングリコール、ペンタエリトリット、
ソルビット、ソルビタン、蔗糖等の多価アルコール類、
各種重合度のポリエチレングリコール、ポリプロピレン
グリコール等のポリアルキレングリコール類等が挙げら
れるが、なかでもグリセリン、トリメチロールプロパ
ン、ジエチレングリコール、トリエチレングリコール、
ジプロピレングリコールはカール矯正効果に優れるため
より好ましく用いられる。なお、上記可塑剤は必要に応
じて２種以上の化合物を併用してもよい。Examples of the water-soluble plasticizer used in the present invention include ethylene glycol, glycerin, trimethylolpropane, diethylene glycol, triethylene glycol, dipropylene glycol, pentaerythritol,
Polyhydric alcohols such as sorbitol, sorbitan, and sucrose;
Polyethylene glycols of various degrees of polymerization, polyalkylene glycols such as polypropylene glycol and the like, among which glycerin, trimethylolpropane, diethylene glycol, triethylene glycol,
Dipropylene glycol is more preferably used because of its excellent curl correcting effect. The plasticizer may be used in combination of two or more compounds as necessary.
本発明における処理液は、上述の如き水溶性可塑剤を
水に溶解して調製されるが、かかる処理液中における水
溶性可塑剤の固形分濃度は１〜50重量％、好ましくは10
〜30重量％の範囲となるように調製されるのが望まし
い。The treatment liquid in the present invention is prepared by dissolving the water-soluble plasticizer as described above in water, and the solid concentration of the water-soluble plasticizer in the treatment liquid is 1 to 50% by weight, preferably 10% by weight.
It is desirably prepared to be in the range of 3030% by weight.
また、かかる処理液中には、本発明の所望の効果を阻
害しない範囲で、セルロース誘導体、澱粉誘導体等の各
種水溶性天然高分子類、ポリビニルアルコールをはじめ
とする合成分子類、消泡剤、浸透剤、濡れ剤、ブロッキ
ング防止のための滑剤、レベリング剤、硬化剤、増粘
剤、皮膜形成助剤、帯電防止剤、界面活性剤等を適宜添
加することができる。In addition, in such a treatment solution, various water-soluble natural polymers such as cellulose derivatives and starch derivatives, synthetic molecules including polyvinyl alcohol, an antifoaming agent, as long as the desired effects of the present invention are not impaired, A penetrant, a wetting agent, a lubricant for blocking prevention, a leveling agent, a curing agent, a thickener, a film forming aid, an antistatic agent, a surfactant and the like can be appropriately added.
剥離基体への処理液の塗布または含浸は、剥離基体が
粘着シートに加工される前または加工された後のいずれ
で行ってもよく、さらに剥離剤塗布工程、粘着剤塗布工
程、貼り合わせ工程等の任意の工程で処理することがで
きるが、カール矯正効果の点で粘着剤塗布後、表面基材
を貼り合わせる直前または直後が望ましい。The application or impregnation of the treatment liquid onto the release substrate may be performed before or after the release substrate is processed into an adhesive sheet, and further, a release agent application step, an adhesive application step, a bonding step, and the like. However, from the viewpoint of the curl correction effect, it is desirable that the adhesive be applied immediately before or immediately after bonding the surface substrate after applying the pressure-sensitive adhesive.
なお、剥離基体への処理液の塗布または含浸の程度
は、処理液中の含有成分が剥離基体の重量に対して0.1
〜20重量％、好ましくは0.5〜15重量％の範囲で付着す
るように処理するのが望ましい。なお、かかる処理液の
塗布または含浸は、エアーナイフコーター、ロールコー
ター、グラビアコーター、バーコーター等の周知の装置
で塗工することができる。The degree of application or impregnation of the treatment liquid on the release substrate is such that the component contained in the treatment liquid is 0.1% based on the weight of the release substrate.
It is desirable to treat so as to adhere in a range of -20% by weight, preferably 0.5-15% by weight. The application or impregnation of the treatment liquid can be performed by a known device such as an air knife coater, a roll coater, a gravure coater, and a bar coater.
本発明の粘着シートを構成する方法は、常法に従って
例えば、剥離シート上に溶剤型粘着材、エマルジョン型
粘着剤、ホットメルト型粘着剤等を塗布し、必要により
乾燥することにより粘着剤層を形成するのであるが、該
粘着剤層の引張強さ（JIS K−6301に準ずる）が、5kg/c
m2以上であると、印刷機で粘着シートをダイカット、シ
ートカットした際、カット刃に熱着剤の付着が抑制され
るため好ましい実施態様の一つである。次いで上記粘着
剤層上に表面基材を貼り合わせて粘着シートに仕上げら
れるが、表面基材を貼り合わせる直前に該表面基材を50
〜100℃のオーブンで熱処理すると、カール矯正効果が
さらに大きくなるためやはり好ましい実施態様の一つで
ある。The method of forming the pressure-sensitive adhesive sheet of the present invention is, for example, by applying a solvent-type pressure-sensitive adhesive, an emulsion-type pressure-sensitive adhesive, a hot-melt-type pressure-sensitive adhesive on a release sheet according to a conventional method, and drying the pressure-sensitive adhesive layer by drying if necessary. The pressure-sensitive adhesive layer has a tensile strength (according to JIS K-6301) of 5 kg / c
When it is not less than m 2 , when a pressure-sensitive adhesive sheet is die-cut and sheet-cut by a printing machine, adhesion of a thermal adhesive to a cutting blade is suppressed, which is one of the preferred embodiments. Next, a surface substrate is laminated on the pressure-sensitive adhesive layer to finish the pressure-sensitive adhesive sheet.
Heat treatment in an oven at a temperature of ℃ 100 ° C. further enhances the curl correcting effect, which is also one of the preferred embodiments.
而して、本発明の工程の概略を示すと例えば以下の様
になる。The outline of the process of the present invention is as follows, for example.
表面基材の製造 各種シート類上に、本発明の特定の単量体を乳化共重
合してなる特定のガラス転移温度を有するアクリル酸エ
ステル共重合体エマルジョンを主成分とする処理液を、
オフマシンコーターまたはオンマシンコーターにより塗
布または含浸し、乾燥後スーパーカレンダーで平滑化処
理を行う。Manufacture of surface base material On various sheets, a treatment liquid mainly containing an acrylate copolymer emulsion having a specific glass transition temperature obtained by emulsion-copolymerizing the specific monomer of the present invention,
It is applied or impregnated with an off-machine coater or an on-machine coater, dried, and then subjected to a smoothing treatment with a super calender.
下塗り層を設けた剥離基体の製造 上質紙等に下塗り層塗液を塗布乾燥し、スーパーカレ
ンダーで平滑化処理を行う。Production of release substrate provided with undercoat layer An undercoat layer coating solution is applied to high-quality paper or the like, dried, and subjected to a smoothing treatment using a super calender.
粘着シートの製造 上記下塗り層上に剥離剤を塗布乾燥し、さらにその上
に粘着剤層を塗布乾燥し、次いで上記表面基材の処理液
を塗布していない面側を粘着剤層上に貼り合わせ、その
直後、剥離基体の剥離剤層等を積層していない面に本発
明の水溶性可塑剤を主成分とする処理液を塗布または含
浸する。（表面基材を貼り合わせる直前に、表面基材を
熱処理すると、一層カール矯正効果があがる。） 「実施例」 以下に実施例を挙げて本発明をより具体的に説明する
が、勿論これらに限定されるものではない。Production of pressure-sensitive adhesive sheet A release agent is applied and dried on the undercoat layer, a pressure-sensitive adhesive layer is further coated and dried thereon, and then the surface side of the surface base material not coated with the treatment liquid is pasted on the pressure-sensitive adhesive layer. Immediately thereafter, the surface of the release substrate on which the release agent layer or the like is not laminated is coated or impregnated with the treatment liquid containing the water-soluble plasticizer of the present invention as a main component. (If the surface substrate is heat-treated immediately before bonding the surface substrate, the curl correction effect is further improved.) "Examples" The present invention will be described more specifically with reference to the following examples. It is not limited.
尚、例中の塗布量、部数、混合割合などは特に断らな
い限り、全て固形分で示した。In addition, the coating amount, the number of copies, the mixing ratio, and the like in the examples are all represented by solid contents unless otherwise specified.
実施例１ 坪量52g/m2、厚さ70μｍの上質紙の表面に下記組成の
処理液Ａを乾燥塗布量が1.0g/m2となるようにバーコー
ターで塗布乾燥し、スーパーカレンダーで平滑化処理し
て表面基材を得た。Example 1 A treatment liquid A having the following composition was applied on a surface of a high-quality paper having a basis weight of 52 g / m 2 and a thickness of 70 μm using a bar coater so that the dry coating amount was 1.0 g / m 2, and dried, and smoothed with a super calender. Surface treatment was performed to obtain a surface substrate.
処理液Ａの調製 メタクリル酸メチル260g、アクリル酸ブチル40g、ア
クリル酸−２−エチルヘキシル88g、アクリル酸12g、ポ
リオキシエチレンノニルフェニルエーテル硫酸ナトリウ
ム系乳化剤7g、イオン交換水170gから成る乳化単量体混
合液（Ｉ）を調製した。Preparation of treatment liquid A Emulsion monomer mixture consisting of 260 g of methyl methacrylate, 40 g of butyl acrylate, 88 g of 2-ethylhexyl acrylate, 12 g of acrylic acid, 7 g of sodium polyoxyethylene nonylphenyl ether sulfate emulsifier, and 170 g of ion-exchanged water Liquid (I) was prepared.
次に、撹拌機、クーラー、滴下ロート、窒素吸込管、
温度計を付帯した２の四つ口フラスコにイオン交換水
240gとポリオキシエチレンノニルフェニルエーテル硫酸
ナトリウム系乳化剤2g、過硫酸カリウム0.8gを仕込み、
窒素置換しながら70℃まで昇温した後、この中に上記乳
化単量体混合液（Ｉ）を２時間かけて滴下させて重合さ
せた。滴下終了後、70℃で２時間熟成して重合を完結さ
せた。得られたアクリル酸エステル共重合体エマルジョ
ンのガラス転移温度は27℃であった。Next, a stirrer, cooler, dropping funnel, nitrogen suction pipe,
Ion-exchanged water in a two four-necked flask with a thermometer
240 g and 2 g of sodium polyoxyethylene nonylphenyl ether sulfate emulsifier, 0.8 g of potassium persulfate were charged,
After the temperature was raised to 70 ° C. while purging with nitrogen, the above-mentioned emulsified monomer mixture (I) was dropped therein for 2 hours to carry out polymerization. After completion of the dropwise addition, the mixture was aged at 70 ° C. for 2 hours to complete the polymerization. The glass transition temperature of the obtained acrylate copolymer emulsion was 27 ° C.
次に、このアクリル酸エステル共重合体エマルジョン
97重量部、ワックスエマルジョン２重量部、消泡剤１重
量部を含む水性処理液（濃度10重量％）を調製した。Next, this acrylate copolymer emulsion
An aqueous treatment liquid (concentration: 10% by weight) containing 97 parts by weight, 2 parts by weight of a wax emulsion, and 1 part by weight of an antifoaming agent was prepared.
剥離シートの製造 分子量2500の乳化剤を２重量％含有するアクリル酸ブ
チル−アクリロニトリル−アクリル酸の３元共重合体
（中央理化工業（株）製 商品名「リカボンドET−Ｌ−
924−１」）（ガラス転移温度：−14℃）100重量部と分
子量2500の乳化剤を２重量％含有するアクリル酸ブチル
−アクリロニトリル−メタクリル酸メチル−アクリル酸
の４元共重合体（中央理化工業（株）製 商品名「リカ
ボンドET−Ｌ−924−２」）（ガラス転移温度:48℃）20
重量部を混合した水性共重合体に、ポリビニルアルコー
ル10重量部、グリセリン１重量部、コロイダルシリカ２
重量部、消泡剤0.1重量部を添加して濃度40重量％の下
塗り層用水性処理液を調製した。Production of Release Sheet A terpolymer of butyl acrylate-acrylonitrile-acrylic acid containing 2% by weight of an emulsifier having a molecular weight of 2,500 (trade name "Licabond ET-L-" manufactured by Chuo Rika Kogyo Co., Ltd.)
924-1 ") (Glass transition temperature: -14 ° C) A butyl acrylate-acrylonitrile-methyl methacrylate-acrylic acid quaternary copolymer containing 100 parts by weight and 2% by weight of an emulsifier having a molecular weight of 2500 (Chuo Rika Kogyo Co., Ltd.) (Likabond ET-L-924-2) (trade name: 48 ° C) 20
10 parts by weight of polyvinyl alcohol, 1 part by weight of glycerin, 2 parts by weight of colloidal silica
By weight, 0.1 part by weight of an antifoaming agent was added to prepare an aqueous treatment liquid for an undercoat layer having a concentration of 40% by weight.
この下塗り層用水性処理液を坪量50g/m2、厚さ65μｍ
の上質紙にロッドブレードコーターで乾燥塗布量が4g/m
2となるように塗布乾燥して下塗り層を有する剥離基体
を得た。This aqueous solution for undercoat layer was prepared by applying a basis weight of 50 g / m 2 and a thickness of 65 μm.
4g / m dry coating weight on high quality paper with rod blade coater
The resultant was coated and dried to obtain a release substrate having an undercoat layer.
この下塗り層上にシリコーン剥離剤（トーレ・シリコ
ーン（株）製 商品名「SRX−211」）の７％トルエン溶
液を乾燥塗布量が1g/m2となるように、バーコーターで
塗布乾燥して剥離シートを得た。A 7% toluene solution of a silicone release agent (trade name: “SRX-211” manufactured by Toray Silicone Co., Ltd.) is applied on the undercoat layer by a bar coater so that the dry coating amount is 1 g / m 2, and then dried. A release sheet was obtained.
粘着シートの製造 この剥離シートの剥離剤塗布面にアクリル系エマルジ
ョン粘着剤（日本カーバイド（株）製 商品名「ニカゾ
ールＬ−122」）（引張強さ:2.5kg/cm2）をリバースロ
ールコーターで乾燥塗布量が20g/m2となるように塗布乾
燥した。Production of pressure-sensitive adhesive sheet An acrylic emulsion pressure-sensitive adhesive (trade name “Nikazol L-122” manufactured by Nippon Carbide Co., Ltd.) (tensile strength: 2.5 kg / cm 2 ) was applied to the release agent-coated surface of this release sheet with a reverse roll coater. The coating was dried so that the dry coating amount was 20 g / m 2 .
次いで、この粘着剤層上に前記表面基材の処理液Ａを
塗布していない面（裏面）を重ねてプレスロールで貼り
合わせた後、剥離シートの剥離剤層等を積層していない
面（裏面）に下記組成の処理液Ｂを乾燥塗布量が1.0g/m
2となるようにロールコーターで塗布乾燥して粘着シー
トを製造した。Next, the surface (back surface) of the surface substrate on which the treatment liquid A is not applied is superimposed on the pressure-sensitive adhesive layer and bonded by a press roll. Then, the surface of the release sheet on which the release agent layer or the like is not laminated ( 1.0 g / m2 of treatment liquid B having the following composition
The resultant was applied with a roll coater and dried to obtain a pressure-sensitive adhesive sheet.
処理液Ｂの調製 グリセリン22重量部、炭酸水素ナトリウム0.9重量部
を含む水性処理液（濃度22.9重量％）を調製した。Preparation of treatment liquid B An aqueous treatment liquid (concentration: 22.9% by weight) containing 22 parts by weight of glycerin and 0.9 parts by weight of sodium hydrogen carbonate was prepared.
実施例２ 実施例１の処理液Ａを、坪量40g/m2、厚さ55μｍの上
質紙にオンマシンのチャンプレックスコーターで乾燥塗
布量が2g/m2となるように塗布乾燥し、スーパーカレン
ダーで平滑化処理して表面基材を得た以外は実施例１と
同様にして粘着シートを製造した。Example 2 The treatment liquid A of Example 1 was applied to a high-quality paper having a basis weight of 40 g / m 2 and a thickness of 55 μm using an on-machine champlex coater so as to have a dry application amount of 2 g / m 2 and dried. A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that a surface substrate was obtained by performing a smoothing treatment with a calender.
実施例３ 実施例１において、表面基材を貼り合わせる直前に表
面基材を80℃のオーブンで熱処理して粘着剤層上に貼り
合わせた以外は実施例１と同様にして粘着シートを製造
した。Example 3 A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1, except that the surface substrate was heat-treated in an oven at 80 ° C. and bonded onto the pressure-sensitive adhesive layer immediately before bonding the surface substrate. .
実施例４ 坪量64g/m2、厚さ75μｍの上質紙の表面に、処理液Ａ
の代わりに下記組成の処理液Ｃを乾燥塗布量が1.2g/m2
となるように塗布乾燥し、スーパーカレンダーにより平
滑化処理して表面基材を得た以外は実施例１と同様にし
て粘着シートを製造した。Example 4 Treatment liquid A was applied to the surface of a high-quality paper having a basis weight of 64 g / m 2 and a thickness of 75 μm.
Instead of a processing solution C having the following composition, a dry coating amount of 1.2 g / m 2
Then, a pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that a surface substrate was obtained by coating and drying so as to obtain a surface base material.
処理液Ｃの調製 メタクリル酸メチル300g、アクリル酸ブチル80g、ア
クリル酸20gの単量体混合物を用いた以外は実施例１の
処理液Ａと同様にしてアクリル酸エステル共重合体エマ
ルジョンを得た。（ガラス転移温度:56℃）このアクリ
ル酸エステル共重合体エマルジョン90重量部、コロイダ
ルシリカ８重量部、消泡剤２重量部を含む水性処理液
（濃度10重量％）を調製した。Preparation of Treatment Liquid C An acrylate copolymer emulsion was obtained in the same manner as in Treatment Liquid A of Example 1, except that a monomer mixture of 300 g of methyl methacrylate, 80 g of butyl acrylate, and 20 g of acrylic acid was used. (Glass transition temperature: 56 ° C.) An aqueous treatment liquid (concentration: 10% by weight) containing 90 parts by weight of this acrylate copolymer emulsion, 8 parts by weight of colloidal silica, and 2 parts by weight of an antifoaming agent was prepared.
実施例５ 坪量52g/m2、厚さ70μｍの上質紙の表面に処理液Ａの
代わりに下記組成の処理液Ｄを乾燥塗布量が1.2g/m2と
なるように塗布乾燥し、スーパーカレンダーにより平滑
化処理して表面基材を得た以外は実施例１と同様にして
粘着シートを製造した。Example 5 Instead of the treatment liquid A, a treatment liquid D having the following composition was applied to the surface of a high-quality paper having a basis weight of 52 g / m 2 and a thickness of 70 μm so as to have a dry application amount of 1.2 g / m 2, and dried. A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1 except that a surface substrate was obtained by performing a smoothing treatment using a calender.
処理液Ｄの調製 スチレン280g、メタクリル酸メチル68g、アクリル酸
−２−エチルヘキシル40g、アクリル酸12g単量体混合物
を用いた以外は実施例１の処理液Ａと同様にしてアクリ
ル酸エステル共重合体エマルジョンを得た。（ガラス転
移温度:76℃）このアクリル酸エステル共重合体エマル
ジョン95重量部、ワックスエマルジョン４重量部、消泡
剤１重量部を含む水性処理液（濃度15重量％）を調製し
た。Preparation of Treatment Liquid D Acrylic ester copolymer was prepared in the same manner as treatment liquid A of Example 1, except that a monomer mixture of 280 g of styrene, 68 g of methyl methacrylate, 40 g of 2-ethylhexyl acrylate, and 12 g of acrylic acid was used. An emulsion was obtained. (Glass transition temperature: 76 ° C.) An aqueous treatment liquid (concentration: 15% by weight) containing 95 parts by weight of this acrylate copolymer emulsion, 4 parts by weight of a wax emulsion, and 1 part by weight of an antifoaming agent was prepared.
実施例６ 実施例１において、表面基材の表面に処理液Ａの代わ
りに下記組成の処理液Ｅを塗布した以外は実施例１と同
様にして粘着シートを製造した。Example 6 A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1, except that the treatment liquid E having the following composition was applied instead of the treatment liquid A to the surface of the surface substrate.
処理液Ｅの調製 メタクリル酸メチル290g、アクリル酸ブチル60g、ア
クリル酸−２−エチルヘキシル30g、アクリル酸20gの単
量体混合物を用いた以外は実施例１の処理液Ａと同様に
してアクリル酸エステル共重合体エマルジョンを得た。
（ガラス転移温度:49℃）このアクリル酸エステル共重
合体エマルジョン97重量部、ワックスエマルジョン２重
量部、消泡剤１重量部を含む水性処理液（濃度８重量
％）を調製した。Preparation of treatment liquid E Acrylic ester was prepared in the same manner as treatment liquid A of Example 1 except that a monomer mixture of 290 g of methyl methacrylate, 60 g of butyl acrylate, 30 g of 2-ethylhexyl acrylate, and 20 g of acrylic acid was used. A copolymer emulsion was obtained.
(Glass transition temperature: 49 ° C.) An aqueous treatment liquid (concentration: 8% by weight) containing 97 parts by weight of this acrylate copolymer emulsion, 2 parts by weight of a wax emulsion, and 1 part by weight of an antifoaming agent was prepared.
実施例７ 実施例１において、表面基材の表面に処理液Ａの代わ
りに下記組成の処理液Ｆを塗布した以外は実施例１と同
様にして粘着シートを製造した。Example 7 A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1, except that the treatment liquid F having the following composition was applied instead of the treatment liquid A to the surface of the surface substrate.
処理液Ｆの調製 メタクリル酸メチル360g、アクリル酸ブチル10g、ア
クリル酸−２−エチルヘキシル10g、アクリル酸20gの単
量体混合物を用いた以外は実施例１の処理液Ａと同様に
してアクリル酸エステル共重合体エマルジョンを得た。
（ガラス転移温度:91℃）このアクリル酸エステル共重
合体エマルジョン97重量部、ワックスエマルジョン２重
量部、消泡剤１重量部を含む水性処理液（濃度８重量
％）を調製した。Preparation of treatment liquid F Acrylic ester was prepared in the same manner as treatment liquid A of Example 1 except that a monomer mixture of 360 g of methyl methacrylate, 10 g of butyl acrylate, 10 g of 2-ethylhexyl acrylate, and 20 g of acrylic acid was used. A copolymer emulsion was obtained.
(Glass transition temperature: 91 ° C.) An aqueous treatment liquid (concentration: 8% by weight) containing 97 parts by weight of this acrylate copolymer emulsion, 2 parts by weight of a wax emulsion, and 1 part by weight of an antifoaming agent was prepared.
実施例８ 粘着剤をアクリル系エマルジョン粘着剤（東洋インキ
製造（株）製 商品名「オリバインBPW−5082−２」）
（引張強さ:8.0kg/cm2）とした以外は実施例１と同様に
して粘着シートを製造した。Example 8 The adhesive was an acrylic emulsion adhesive (trade name “Olivine BPW-5082-2” manufactured by Toyo Ink Mfg. Co., Ltd.)
(Tensile strength: 8.0 kg / cm 2 ), except that the pressure-sensitive adhesive sheet was manufactured in the same manner as in Example 1.
実施例９ 粘着剤をアクリル系エマルジョン粘着剤（日本カーバ
イド（株）製 商品名「ニカゾールTS−1226」）（引張
強さ:10.5kg/cm2）とした以外は実施例１と同様にして
粘着シートを製造した。Example 9 Adhesion was carried out in the same manner as in Example 1 except that the adhesive was an acrylic emulsion adhesive (trade name “Nikazol TS-1226” manufactured by Nippon Carbide Co., Ltd.) (tensile strength: 10.5 kg / cm 2 ). A sheet was manufactured.
比較例１ 実施例１において、処理液Ａを塗布しなかった以外は
実施例１と同様にして粘着シートを製造した。Comparative Example 1 An adhesive sheet was produced in the same manner as in Example 1 except that the treatment liquid A was not applied.
比較例２ 坪量52g/m2、厚さ70μｍの上質紙の表面に処理液Ａの
代わりに下記組成の処理液Ｇを乾燥塗布量が0.7g/m2と
なるようにバーコーターで塗布乾燥した。Comparative Example 2 In place of treating solution A, treating solution G having the following composition was applied on a surface of a high-quality paper having a basis weight of 52 g / m 2 and a thickness of 70 μm using a bar coater so as to have a dry application amount of 0.7 g / m 2. did.
処理液Ｇの調製 アクリル酸エステル共重合体エマルジョン（日本合成
ゴム（株）製 商品名AE−816」）（ガラス転移温度：
−48℃）80重量部、ワックスエマルジョン10重量部、コ
ロイダルシリカ８重量部、消泡剤２重量部を含む水性処
理液（濃度８重量％）を調製した。Preparation of Treatment Solution G Acrylic ester copolymer emulsion (trade name AE-816, manufactured by Nippon Synthetic Rubber Co., Ltd.) (glass transition temperature:
An aqueous treatment solution (concentration: 8% by weight) containing 80 parts by weight of -48 ° C), 10 parts by weight of a wax emulsion, 8 parts by weight of colloidal silica, and 2 parts by weight of an antifoaming agent was prepared.
尚、この表面基剤をスーパーカレンダー処理するため
に、巻取りを巻き戻した際、表面と裏面で著しくブロッ
キングを起こし表面基材の表面は完全に破壊された。従
って、粘着シートは製造できなかった。When the winding was rewound to supercalender the surface base material, remarkable blocking occurred on the front and back surfaces, and the surface of the surface substrate was completely destroyed. Therefore, a pressure-sensitive adhesive sheet could not be produced.
比較例３ 実施例１において、上質紙の表面に処理液Ａの代わり
に下記組成の処理液Ｈを塗布乾燥した以外は実施例１と
同様にして粘着シートを製造した。Comparative Example 3 A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1, except that the treatment liquid H having the following composition was applied and dried on the surface of the high-quality paper instead of the treatment liquid A.
処理液Ｈの調製 スチレン130g、アクリル酸ブチル250g、アクリル酸20
gの単量体混合物を用いた以外は実施例１の処理液Ａと
同様にしてアクリル酸エステル共重合体エマルジョンを
得た。（ガラス転移温度：−15℃）このアクリル酸エス
テル共重合体エマルジョン80重量部、ワックスエマルジ
ョン10重量部、コロイダルシリカ８重量部、消泡剤２重
量部を含む水性処理液（濃度８重量％）を調製した。Preparation of treatment liquid H Styrene 130 g, butyl acrylate 250 g, acrylic acid 20
An acrylic ester copolymer emulsion was obtained in the same manner as in the treatment liquid A of Example 1 except that the monomer mixture of g was used. (Glass transition temperature: -15 ° C) An aqueous treatment liquid containing 80 parts by weight of this acrylate copolymer emulsion, 10 parts by weight of a wax emulsion, 8 parts by weight of colloidal silica, and 2 parts by weight of an antifoaming agent (concentration: 8% by weight) Was prepared.
尚、この表面基材をスーパーカレンダー処理するため
に、巻取りを巻き戻した際、表面と裏面で若干ブロッキ
ングを起こした為、表面基材の表面が一部破壊された。In addition, when the winding was rewound to supercalender the surface substrate, a slight blocking occurred on the front and back surfaces, so that the surface of the surface substrate was partially destroyed.
比較例４ 坪量64g/m2、厚さ75μｍの上質紙の表面に、処理液Ａ
の代わりに下記組成の処理液Ｉを乾燥塗布量が1.0g/m2
となるようにエアーナイフコーターで塗布乾燥し、スー
パーカレンダー処理をして表面基材を得た。Comparative Example 4 Treatment liquid A was applied on the surface of a high-quality paper having a basis weight of 64 g / m 2 and a thickness of 75 μm.
Instead of a processing solution I having the following composition, the coating weight of which is 1.0 g / m 2
Was applied and dried with an air knife coater and subjected to a super calender treatment to obtain a surface substrate.
処理液Ｉの調製 スチレン・無水マレイン酸共重合体（モンサント
（株）製 商品名「スクリプトセット520」）（ガラス
転移温度:130℃）97重量部、コロイダルシリカ２重量
部、消泡剤１重量部を含む水性塗液（濃度10重量％）を
調製した。Preparation of Treatment Solution I 97 parts by weight of a styrene / maleic anhydride copolymer (trade name “Script Set 520” manufactured by Monsanto Co., Ltd.) (glass transition temperature: 130 ° C.), 2 parts by weight of colloidal silica, 1 part by weight of defoamer An aqueous coating solution (concentration: 10% by weight) was prepared.
次に実施例１と同じ剥離シートの剥離剤塗布面に実施
例１と同じアクリル系エマルジョン粘着剤をリバースロ
ールコーターで乾燥塗布量が22g/m2となるように、塗布
乾燥した以外は、実施例１と同様にして粘着シートを製
造した。Next, the same acrylic emulsion pressure-sensitive adhesive as that of Example 1 was applied to the release agent-coated surface of the same release sheet as that of Example 1 using a reverse roll coater so that the dry application amount was 22 g / m 2, and the procedure was the same. A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1.
比較例５ 実施例１において、剥離シートの裏面に処理液Ｂの代
わりに水を4CC/m2となるようにロールコーターで塗布乾
燥した以外は実施例１と同様にして粘着シートを製造し
た。Comparative Example 5 A pressure-sensitive adhesive sheet was produced in the same manner as in Example 1, except that water was applied to the back surface of the release sheet instead of the treatment liquid B with a roll coater so as to have a flow rate of 4 CC / m 2 and dried.
かくして得られた14種類の粘着シートのカール、複写
機での通紙時のジャミング状態、トナーの定着性を評価
し表に示した。The curls of the 14 types of pressure-sensitive adhesive sheets thus obtained, the jamming state when passing the paper through a copying machine, and the toner fixability were evaluated and shown in the table.
J.TAPPI紙パルプ試験方法No.16−77に従って評価し
た。Evaluation was made according to J.TAPPI pulp test method No. 16-77.
カール度＝100/カール半径（cm） TSは正カール（表面基材側へのカール）、WSは逆カー
ル（剥離基体側へのカール）を示す。Curl degree = 100 / curl radius (cm) TS indicates normal curl (curl toward the surface substrate side), and WS indicates reverse curl (curl toward the release substrate side).
〔通紙時のジャミング状態〕 ○；ジャミングは全く認められない。[Jamming state during paper passing] ；: Jamming is not recognized at all.
△；ジャミングが起きることもあるが実用上問題ないレ
ベルであった。Δ: Jamming may occur, but the level was not a problem in practical use.
×；著しくジャミングが起き、実用上問題がある。X: Jamming occurred remarkably, and there was a practical problem.
複写機（商品名;SF−8100,シャープ社製）で原稿を複
写した後、印字部のトナーをカミソリで10回削り、トナ
ーの定着性を評価した。After copying the original with a copying machine (trade name: SF-8100, manufactured by Sharp Corporation), the toner in the printing portion was shaved ten times with a razor, and the toner fixability was evaluated.
○；トナーが殆ど脱落しない。；: The toner hardly falls off.
△；トナーが少し脱落したが、実用上問題ない。Δ: The toner slightly dropped, but there was no practical problem.
×；トナーが著しく脱落した。X: The toner was remarkably dropped.
なお、表中「常湿」とは28℃,60％RHの環境下で７時
間調湿を行ったものであり、「高湿」とは25℃,90％RH
の環境下で７時間調湿を行った後に測定した結果を示
た。In the table, “Normal humidity” means humidity control performed at 28 ° C. and 60% RH for 7 hours, and “High humidity” means 25 ° C. and 90% RH.
The results of measurement after humidity control for 7 hours in the above environment were shown.
また、表中ブロッキングとは、表面基材をスーパーカ
レンダー処理するために、巻取りを巻き戻した際、表面
と裏面が粘着する現象を指す。The term “blocking” in the table refers to a phenomenon in which the front surface and the back surface adhere to each other when the winding is rewound to supercalender the surface substrate.
粘着シートを長さ20cm、幅15cmに切り、100枚を重ね
てギロチンテスト機（六合製作所（株）製 商品名「CM
−450」）で幅方向に20回連続して断裁した後のギロチ
ン刃に付着した粘着剤の量（単位:mg）を測定した。Cut the adhesive sheet into a length of 20cm and a width of 15cm, and stack 100 sheets on a guillotine test machine (trade name “CM manufactured by Rokugo Seisakusho Co., Ltd.
−450 ”), the amount (unit: mg) of the pressure-sensitive adhesive adhered to the guillotine blade after continuously cutting 20 times in the width direction was measured.
「効果」 表から明らかな様に、本発明の粘着シートはカール及
び複写機での通紙時のジャミングがなく、トナーの定着
性にも極めて優れたものであった。"Effects" As is clear from the table, the pressure-sensitive adhesive sheet of the present invention was free from curling and jamming when the paper was passed through a copying machine, and was extremely excellent in toner fixability.
フロントページの続き (56)参考文献 特開 昭61−113679（ＪＰ，Ａ) 特開 昭56−15761（ＪＰ，Ａ) 特開 平２−145672（ＪＰ，Ａ) 特開 平２−245082（ＪＰ，Ａ) 特開 昭55−129474（ＪＰ，Ａ) 特開 昭63−75199（ＪＰ，Ａ)Continuation of the front page (56) References JP-A-61-113679 (JP, A) JP-A-56-15761 (JP, A) JP-A-2-145672 (JP, A) JP-A-2-245082 (JP) JP-A-55-129474 (JP, A) JP-A-63-75199 (JP, A)
Claims (5)
次積層してなる粘着シートにおいて、エチレン性不飽
和カルボン酸含有単量体及びホモポリマーのガラス転
移温度が50℃以上であるエチレン性不飽和結合含有単量
体、ならびにこれらの単量体と共重合可能な他の単量
体（但し及びの単量体の少なくとも一方にアクリル
酸エステル単量体を含む）を乳化共重合してなるアクリ
ル酸エステル共重合体エマルジョンのガラス転移温度が
０〜100℃であり、該共重合体エマルジョンを主成分と
する処理液を、該表面基材の粘着剤を積層しない面に塗
布または含浸し、且つ剥離基体の剥離剤を積層しない面
に水溶性可塑剤を主成分とする処理液を塗布または含浸
させてなることを特徴とする粘着シート。1. A pressure-sensitive adhesive sheet comprising a release substrate, a release agent, a pressure-sensitive adhesive and a surface substrate laminated in this order, wherein the ethylenically unsaturated carboxylic acid-containing monomer and the homopolymer have a glass transition temperature of 50 ° C. or higher. Emulsion copolymerization of ethylenically unsaturated bond-containing monomers and other monomers copolymerizable with these monomers (however, at least one of these monomers contains an acrylate monomer) The glass transition temperature of the acrylic ester copolymer emulsion obtained is 0 to 100 ° C., and a treatment liquid containing the copolymer emulsion as a main component is applied to the surface of the surface substrate on which the adhesive is not laminated, or A pressure-sensitive adhesive sheet obtained by applying or impregnating a treatment liquid containing a water-soluble plasticizer as a main component on a surface of a release substrate on which a release agent is not laminated and which is impregnated.
る）が、5kg/cm2以上であることを特徴とする請求項
（１）記載の粘着シート。2. The pressure-sensitive adhesive sheet according to claim 1, wherein the pressure-sensitive adhesive has a tensile strength (according to JIS K-6301) of 5 kg / cm 2 or more.
主成分とする下塗り層を設けた請求項（１）〜（２）記
載の粘着シート。3. The pressure-sensitive adhesive sheet according to claim 1, wherein an undercoat layer containing a polymer compound as a main component is provided between the release substrate and the release agent.
塗布または含浸した請求項（１）〜（３）記載の粘着シ
ート。4. The pressure-sensitive adhesive sheet according to claim 1, wherein the treatment liquid for the surface substrate is applied or impregnated with an on-machine coating machine.
製造する方法であって、剥離基体上に剥離剤を設けた剥
離シートに粘着剤を塗布乾燥した後、表面基材を貼り合
わせる直前に、該表面基材を50〜100℃で熱処理するこ
とを特徴とする粘着シートを製造方法。5. The method for producing a pressure-sensitive adhesive sheet according to claim 1, wherein the pressure-sensitive adhesive is applied to a release sheet provided with a release agent on a release substrate and dried, and then the surface substrate is removed. A method for producing a pressure-sensitive adhesive sheet, wherein the surface substrate is heat-treated at 50 to 100 ° C. immediately before bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29555789A JP2823907B2 (en) | 1989-09-07 | 1989-11-14 | Adhesive sheet and method for producing the same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23259989 | 1989-09-07 | ||
| JP1-232599 | 1989-09-07 | ||
| JP29555789A JP2823907B2 (en) | 1989-09-07 | 1989-11-14 | Adhesive sheet and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03179071A JPH03179071A (en) | 1991-08-05 |
| JP2823907B2 true JP2823907B2 (en) | 1998-11-11 |
Family
ID=26530546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29555789A Expired - Fee Related JP2823907B2 (en) | 1989-09-07 | 1989-11-14 | Adhesive sheet and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2823907B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007047435A (en) * | 2005-08-10 | 2007-02-22 | Lintec Corp | Printing adhesive sheet |
-
1989
- 1989-11-14 JP JP29555789A patent/JP2823907B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03179071A (en) | 1991-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5064717A (en) | Adhesive sheet | |
| US5514435A (en) | Adhesive sheet | |
| JP2002532609A (en) | Label adhesive and structure showing low adhesive residue in printer | |
| JPH0551720B2 (en) | ||
| JP2823907B2 (en) | Adhesive sheet and method for producing the same | |
| US5716717A (en) | Wallcovering materials including novel aqueous polymer emulsions useful as prepaste adhesives | |
| JP2659792B2 (en) | Adhesive sheet for electrophotography | |
| JP2008175888A (en) | Electrophotographic sheet and electrophotographic pressure-sensitive adhesive sheet | |
| JP2837486B2 (en) | Adhesive sheet and method for producing the same | |
| JP2712127B2 (en) | Production method of adhesive sheet | |
| JPH0635720B2 (en) | Release paper | |
| JPH0827442A (en) | Release paper | |
| JP3456248B2 (en) | Method for producing aqueous emulsion and easily disintegrating moisture-proof paper | |
| JP3463715B2 (en) | Undercoat agent for release paper | |
| JP2009040971A (en) | Wound body | |
| JPH11172218A (en) | Tacky adhesive composition and use thereof | |
| JPH02308881A (en) | Releasing paper and production thereof | |
| JP2888083B2 (en) | Adhesive sheet | |
| JPH09235521A (en) | Adhesive sheet | |
| JP4032397B2 (en) | Undercoat agent for release paper using silicone emulsion as release layer | |
| JPH02286767A (en) | Self-adhesive sheet | |
| JP3620616B2 (en) | Undercoat agent for release paper | |
| JP2828677B2 (en) | Adhesive sheet | |
| JP2993722B2 (en) | Adhesive paper | |
| JPH07102500A (en) | Adhesive sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 11 Free format text: PAYMENT UNTIL: 20090904 |
|
| LAPS | Cancellation because of no payment of annual fees |