JPH10168406A - Production of release sheet - Google Patents
Production of release sheetInfo
- Publication number
- JPH10168406A JPH10168406A JP33350096A JP33350096A JPH10168406A JP H10168406 A JPH10168406 A JP H10168406A JP 33350096 A JP33350096 A JP 33350096A JP 33350096 A JP33350096 A JP 33350096A JP H10168406 A JPH10168406 A JP H10168406A
- Authority
- JP
- Japan
- Prior art keywords
- release agent
- surface tension
- sheet
- agent composition
- release
- 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.)
- Pending
Links
Landscapes
- Adhesive Tapes (AREA)
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、離型シートの製造
方法に関する。[0001] The present invention relates to a method for producing a release sheet.
【０００２】[0002]
【従来の技術】一般に、粘着テープ、粘着ラベル等の粘
着加工品は、使用する時まで、粘着剤層を保護する目的
で、保護シートが貼り付けられ、使用する時に剥離され
る。従って、保護シートは粘着剤層から容易に剥離出来
ることが必要であり、保護シートと粘着剤層との間の粘
着力が強すぎるのは好ましくない。かかる観点より、保
護シートと粘着剤層との剥離を容易にする目的で、通
常、保護シートの粘着剤層との接触面には、離型剤が塗
工されている。2. Description of the Related Art In general, a pressure-sensitive adhesive product such as a pressure-sensitive adhesive tape or a pressure-sensitive adhesive label is stuck to a protective sheet for the purpose of protecting a pressure-sensitive adhesive layer until use, and is peeled off at the time of use. Therefore, the protective sheet needs to be easily peelable from the pressure-sensitive adhesive layer, and it is not preferable that the adhesive force between the protective sheet and the pressure-sensitive adhesive layer is too strong. From this viewpoint, a release agent is usually applied to the contact surface of the protective sheet with the pressure-sensitive adhesive layer for the purpose of facilitating the peeling of the protective sheet and the pressure-sensitive adhesive layer.
【０００３】上記離型剤の役割として、粘着剤層の保護
と粘着剤層からの剥離を容易にすること以外に、剥離す
る時に、離型剤層が凝集破壊して粘着剤層に移行し、粘
着剤層の粘着力を低下させない性能、所謂、非移行性が
要求される。又、この非移行性は、時間が経過しても、
温度が高い状態が続いても、実質的に変化しないことが
要求される。[0003] The role of the release agent is to protect the pressure-sensitive adhesive layer and to facilitate the release from the pressure-sensitive adhesive layer. In addition, performance that does not reduce the adhesive strength of the adhesive layer, that is, so-called non-migratory property is required. Also, this non-migratory property, even over time,
It is required that the temperature does not substantially change even if the temperature continues to be high.
【０００４】離型剤としては、一般的に、ポリオルガノ
シロキサンからなるシリコーン系離型剤、ポリビニルア
ルコールの長鎖アルキル変性物、ポリエチレンイミンの
長鎖アルキル変性物等が用いられており、これらは、通
常、有機溶剤を溶媒とする溶液の形態で使用される。As the release agent, a silicone release agent composed of a polyorganosiloxane, a long-chain alkyl modified product of polyvinyl alcohol, a long-chain alkyl modified product of polyethyleneimine, and the like are generally used. Usually, it is used in the form of a solution using an organic solvent as a solvent.
【０００５】これら、離型剤には、その目的、用途に応
じて、離型性を容易に調節出来ることが要求されてい
る。即ち、目標の離型性に対して軽すぎれば離型シート
が剥がれ易く、逆に重すぎれば離型シートが剥がれ難い
という問題を生じる。そのため、適度な離型性の調節が
必要とされている。上記離型性を調節するための一つの
方法として、離型剤の濃度や溶液の塗工量を増減して乾
燥後の塗工量を調節することが一般的に行われている。[0005] These release agents are required to be capable of easily adjusting the release property according to the purpose and use. That is, if it is too light with respect to the target releasability, the release sheet tends to peel off, and if it is too heavy, the release sheet hardly peels off. For this reason, there is a need for an appropriate release property adjustment. As one method for adjusting the releasability, generally, the concentration of the release agent or the coating amount of the solution is increased or decreased to adjust the coating amount after drying.
【０００６】しかしながら、溶剤系離型剤や無溶剤シリ
コーン系離型剤では、塗工量を減らしていくと急激に離
型性が悪化することが知られている〔例えば、「接着」
第３７巻８号（１９９３）２６〜３２ページ〕。[0006] However, it is known that the releasability of a solvent-based release agent or a solvent-free silicone-based release agent rapidly deteriorates as the coating amount is reduced [for example, "adhesion".
Vol. 37, No. 8, 1993, pp. 26-32.
【０００７】即ち、塗工量の増減により離型性を微妙に
調節するためには、非常に厳密な塗工量制御が必要であ
るが、現在一般的に使用されている塗工装置では、その
塗工精度面から、非塗布部が生じないように塗工量を厳
密に制御するのは困難である。That is, in order to finely adjust the releasability by increasing / decreasing the coating amount, very strict coating amount control is required. From the viewpoint of the coating accuracy, it is difficult to strictly control the coating amount so that the non-coated portion does not occur.
【０００８】又、離型性を調節するための別の方法とし
て、塗工面の全面に離型剤を塗工するのではなく、必要
とされる離型性に応じて、例えば、ライン状やドット状
のような部分塗工を行い、塗工面積を調節することによ
り離型性を調節することも行われている。しかし、この
方法の場合、特殊な塗工装置が必要となったり、高速化
が困難で生産性が向上しない等の問題点があり、離型性
の調節が容易な離型シートの製造方法は確立されていな
いのが現状である。As another method for adjusting the releasability, instead of applying a release agent to the entire surface of the coating surface, for example, a line-shaped or In some cases, dot-like partial coating is performed, and the releasability is adjusted by adjusting the coating area. However, in the case of this method, there is a problem that a special coating device is required, and it is difficult to increase the speed and the productivity is not improved. It has not been established yet.
【０００９】[0009]
【発明が解決しようとする課題】本発明は、上記従来の
問題点を解決するため、通常の塗工装置を使用して塗工
量を増減するのみで、離型性の調節を任意且つ容易に行
うことの出来る離型シートの製造方法を提供することを
課題とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the present invention simply and simply increases or decreases the amount of coating by using a normal coating apparatus, and can freely and easily adjust the releasability. It is an object of the present invention to provide a method for producing a release sheet that can be performed in a timely manner.
【００１０】[0010]
【課題を解決するための手段】本発明による離型シート
の製造方法は、シート基材の少なくとも片面に水分散系
離型剤組成物を塗工、乾燥する離型シートの製造方法で
あって、シート基材の表面張力（γB ）と水分散系離型
剤組成物の表面張力（γW ）との差（γB −γ W ）が−
１〜＋２０ｄｙｎ／ｃｍであることを特徴とする。A release sheet according to the present invention.
The production method of the above, the aqueous dispersion on at least one side of the sheet substrate
In a method for producing a release sheet for applying and drying a release agent composition,
Then, the surface tension of the sheet substrate (γB) And aqueous dispersion release
Surface tension (γW) And the difference (γB−γ W) Is-
1 to +20 dyn / cm.
【００１１】本発明による離型シートの製造方法に用い
られるシート基材としては、粘着剤層に密着して貼付け
可能な可撓性と該貼付け面から剥離するのに耐え得る強
度を有するものであれば良く、特に限定されるものでは
ないが、ポリエチレン、ポリプロピレン、ポリエステ
ル、セロファン等のフィルム類；上質紙、クラフト紙、
クレープ紙、グラシン紙等の紙類；含浸紙、プラスチッ
クコート紙等の目止め処理を施した紙類；不織布、布等
の布類；並びにこれらの積層体等、離型シートのシート
基材として一般的に用いられるものが挙げられ、いずれ
も好適に用いられる。[0011] The sheet substrate used in the method for producing a release sheet according to the present invention is a sheet substrate that has a flexibility that can be stuck to the pressure-sensitive adhesive layer and a strength that can withstand peeling from the stuck surface. There is no particular limitation, and films such as polyethylene, polypropylene, polyester, and cellophane; fine paper, kraft paper,
Paper base materials such as crepe paper and glassine paper; impregnated papers such as impregnated papers and plastic coated papers; papers subjected to sealing treatment; cloths such as nonwoven fabrics and cloths; Commonly used ones can be mentioned, and all are suitably used.
【００１２】一般にシート基材の表面張力はシート基材
を構成する材料や樹脂の溶解度係数（ＳＰ値）により概
ね決定されるが、本発明においては、水分散系離型剤組
成物が塗工されるシート基材面の表面張力が、以下に述
べるような方法で、調節されていても良い。In general, the surface tension of a sheet substrate is generally determined by the solubility coefficient (SP value) of the material or resin constituting the sheet substrate. In the present invention, the aqueous dispersion release agent composition is coated. The surface tension of the sheet substrate surface to be formed may be adjusted by the method described below.
【００１３】上記シート基材面の表面張力を上げて親水
化を図る方法としては、特に限定されるものではない
が、コロナ処理、火炎処理、プラズマ処理、プライマー
処理等の表面処理が挙げられ、いずれも好適に採用され
るが、なかでもコロナ処理がより好適に採用される。
又、シート基材がプラスチックフィルムやプラスチック
コート紙である場合、プラスチック中の添加剤がブリー
ドアウトして、シート基材の表面張力が下がっているこ
ともあるが、この場合、シート基材表面を洗浄して、ブ
リードアウトした添加剤を除去するだけで表面張力が上
がることもある。The method of increasing the surface tension of the sheet substrate surface to make it hydrophilic is not particularly limited, and examples thereof include surface treatments such as corona treatment, flame treatment, plasma treatment, and primer treatment. Either of them is preferably employed, but corona treatment is more preferably employed.
Also, when the sheet substrate is a plastic film or plastic coated paper, the additive in the plastic may bleed out and the surface tension of the sheet substrate may be reduced. The surface tension may be increased only by washing and removing the bleed-out additive.
【００１４】上記シート基材の表面張力を下げて疎水化
を図る方法としては、特に限定されるものではないが、
フロンガス中でプラズマ処理してシート基材表面に疎水
基を導入する方法が挙げられ、好適に採用される。The method for reducing the surface tension of the sheet substrate to make it hydrophobic is not particularly limited.
A method of introducing a hydrophobic group to the surface of the sheet substrate by performing a plasma treatment in a Freon gas may be mentioned, and is preferably employed.
【００１５】又、シート基材が紙類である場合、その表
面を毛羽立たせて凹凸度を変えることにより、見かけ上
の親水化もしくは疎水化を図ることも出来る。When the sheet substrate is paper, the apparent surface can be made hydrophilic or hydrophobic by changing the degree of irregularities by fuzzing the surface.
【００１６】上記シート基材の表面張力は、特に限定さ
れるものではないが、市販の濡れ試薬（例えば、和光純
薬工業社製の「濡れ指数標準液」）や接触角計等により
測定することが出来る。The surface tension of the sheet substrate is not particularly limited, but is measured by a commercially available wetting reagent (for example, “wetting index standard solution” manufactured by Wako Pure Chemical Industries, Ltd.) or a contact angle meter. I can do it.
【００１７】本発明による離型シートの製造方法に用い
られる水分散系離型剤組成物とは、離型剤が水中に分散
されている所謂水分散系離型剤組成物であれば良く、上
記離型剤としては、特に限定されるものではないが、例
えば、ポリオルガノシロキサンを主成分とするシリコー
ン系離型剤や長鎖アルキル基を側鎖に有する有機離型剤
等が挙げられ、これらの１種もしくは２種以上が好適に
用いられる。The aqueous dispersion release agent composition used in the method for producing a release sheet according to the present invention may be any so-called aqueous dispersion release agent composition in which the release agent is dispersed in water. Examples of the release agent include, but are not particularly limited to, a silicone-based release agent containing a polyorganosiloxane as a main component and an organic release agent having a long-chain alkyl group in a side chain. One or more of these are preferably used.
【００１８】上記離型剤は、主として粘着剤層の保護の
ために仮着される離型シートに使用されるため、熱可塑
性樹脂の押出成形時や射出成形時に用いられる熱可塑性
樹脂用の離型剤のように、加熱成形時に溶融し、凝集破
壊を起こして移行することにより離型性を発現するもの
ではなく、少なくとも離型シート面に塗工されて使用さ
れる条件下では、液体ではなく固体である必要がある。Since the above-mentioned release agent is mainly used for a release sheet temporarily attached to protect the pressure-sensitive adhesive layer, the release agent for the thermoplastic resin used at the time of extrusion molding or injection molding of the thermoplastic resin is used. Like a mold, it does not exhibit releasability by melting at the time of heat molding and causing cohesive failure to migrate, and at least under conditions where it is used after being coated on the release sheet surface, And must be solid.
【００１９】上記シリコーン系離型剤を構成するポリオ
ルガノシロキサンは、単独で用いられるよりも他の物質
と複合して用いられることが好ましく、例えば、ポリア
ルキレンオキサイドと共重合したり、ポリエーテル基を
導入したり、ニトロセルロース、アルキルエーテル−無
水マレイン酸共重合体、ポリビニルアルキルエーテル等
を配合した組成物等として用いられることが好ましい。The polyorganosiloxane constituting the silicone release agent is preferably used in combination with other substances rather than used alone. For example, the polyorganosiloxane may be copolymerized with a polyalkylene oxide, or may be a polyether group. Is preferably used as a composition containing nitrocellulose, an alkyl ether-maleic anhydride copolymer, polyvinyl alkyl ether, or the like.
【００２０】又、長鎖アルキル基を側鎖に有する有機離
型剤としては、特に限定されるものではないが、例え
ば、（１）長鎖アルキル基を含有するビニルモノマーの
（共）重合体、（２）カルボキシル基含有ビニルモノマ
ーの共重合体の長鎖アルキル変性体、（３）水酸基を含
有するビニルモノマーの（共）重合体の長鎖アルキル変
性体、（４）活性水素を含有するポリアミン化合物の長
鎖アルキル変性体等が挙げられ、これらの１種もしくは
２種以上が好適に用いられる。尚、上記長鎖アルキル基
は、特に限定されるものではないが、炭素数６〜３０の
アルキル基が好ましい。又、ここで言う「（共）重合
体」とは「重合体」もしくは「共重合体」を意味する。The organic release agent having a long-chain alkyl group in the side chain is not particularly limited. For example, (1) a (co) polymer of a vinyl monomer containing a long-chain alkyl group , (2) a long-chain alkyl-modified copolymer of a carboxyl group-containing vinyl monomer, (3) a long-chain alkyl-modified (co) polymer of a vinyl monomer having a hydroxyl group, and (4) an active hydrogen. Long chain alkyl-modified polyamine compounds and the like can be mentioned, and one or more of these are suitably used. The long chain alkyl group is not particularly limited, but is preferably an alkyl group having 6 to 30 carbon atoms. The term "(co) polymer" as used herein means "polymer" or "copolymer".
【００２１】上記長鎖アルキル基の炭素数が６未満であ
ると、得られる有機離型剤の離型性能が不十分となり、
逆に長鎖アルキル基の炭素数が３０を超えると、ビニル
モノマーの（共）重合体やポリアミン化合物と長鎖アル
キル基を含有する化合物との反応性が低下する。If the long-chain alkyl group has less than 6 carbon atoms, the resulting organic release agent has insufficient release performance,
On the other hand, when the carbon number of the long-chain alkyl group exceeds 30, the reactivity between the (co) polymer or polyamine compound of the vinyl monomer and the compound containing the long-chain alkyl group decreases.
【００２２】本発明による離型シートの製造方法に用い
られる水分散系離型剤組成物の製造方法としては、特に
限定されるものではないが、例えば、有機離型剤と任意
に加えられる添加剤とを予め加熱溶融し、この加熱溶融
物と水とを、例えば加圧ニーダー、コロイドミル、高速
攪拌シャフト等の従来公知の混合機を用いて、高剪断力
をかけて均一に乳化分散させた後、必要に応じて添加さ
れる表面張力調整剤やその他の添加剤の１種もしくは２
種以上を添加し、均一に攪拌混合して所望の水分散系離
型剤組成物を得る方法（溶融乳化法）や、有機離型剤と
任意に加えられる添加剤とを予め有機溶剤に溶解し、こ
の溶液と水とを、例えば高速乳化機を用いて、高剪断力
をかけて均一に乳化分散させた後、有機溶剤の除去前も
しくは除去後に、必要に応じて添加される表面張力調整
剤やその他の添加剤の１種もしくは２種以上を添加し、
均一に攪拌混合して所望の水分散系離型剤組成物を得る
方法（溶剤溶解法）等が挙げられ、いずれの方法も好適
に採用されるが、なかでも有機溶剤の除去が不要で工程
の簡略な溶融乳化法がより好適に採用される。The method for producing the water-dispersed release agent composition used in the method for producing the release sheet according to the present invention is not particularly limited. For example, an organic release agent and an optional additive may be added. The agent is heated and melted in advance, and the heated melt and water are uniformly emulsified and dispersed by applying a high shear force using a conventionally known mixer such as a pressure kneader, a colloid mill, and a high-speed stirring shaft. After the addition of one or more of a surface tension modifier and other additives that are added as necessary.
A method of adding a seed or more and uniformly stirring and mixing to obtain a desired water-dispersed release agent composition (melt emulsification method), or dissolving an organic release agent and optionally added additives in an organic solvent in advance. Then, after this solution and water are uniformly emulsified and dispersed by applying a high shearing force using, for example, a high-speed emulsifier, before or after the removal of the organic solvent, the surface tension is added as necessary. One or more of the additives and other additives,
A method of uniformly stirring and mixing to obtain a desired water-dispersed release agent composition (solvent dissolution method), etc., and any of these methods is suitably employed. Is more preferably employed.
【００２３】上記溶融乳化法において、有機離型剤の加
熱溶融温度は、特に限定されるものではないが、１２０
℃以上であることが好ましく、水の温度は、特に限定さ
れるものではないが、加圧により１００℃以上とされて
いることが好ましい。又、有機離型剤を予め加熱溶融す
ることなく、水中に一挙に投入し、加圧下１２０℃程度
の温度で、高剪断力をかけて乳化分散させても良い。In the melt emulsification method, the heat melting temperature of the organic release agent is not particularly limited, but may be 120
C. or higher, and the temperature of water is not particularly limited, but is preferably 100 ° C. or higher by pressurization. Alternatively, the organic release agent may be put into water at once without heating and melting in advance, and emulsified and dispersed by applying a high shear force at a temperature of about 120 ° C. under pressure.
【００２４】又、溶融乳化法もしくは溶剤溶解法のいず
れの方法においても、有機離型剤と水との混合割合は、
特に限定されるものではないが、有機離型剤５〜５０重
量％、水９５〜５０重量％であることが好ましい。有機
離型剤の混合割合が５重量％未満であると、乳化分散時
の剪断効果が減殺されて製造効率が低下し、逆に有機離
型剤の混合割合が５０重量％を超えると、粘度が高くな
り過ぎて均一な乳化分散を行うことが困難となる。In either the melt emulsification method or the solvent dissolution method, the mixing ratio between the organic release agent and water is as follows:
Although not particularly limited, the organic release agent is preferably 5 to 50% by weight and water is preferably 95 to 50% by weight. If the mixing ratio of the organic release agent is less than 5% by weight, the shearing effect at the time of emulsification / dispersion is reduced and the production efficiency is reduced. Becomes too high, and it is difficult to perform uniform emulsification and dispersion.
【００２５】さらに、上記乳化分散された有機離型剤の
平均粒子径は、特に限定されるものではないが、１μｍ
以下であることが好ましい。有機離型剤の平均粒子径が
１μｍを超えると、離型剤層の離型性能や非移行性が低
下したり、水分散系離型剤組成物の貯蔵安定性が損なわ
れることがある。The average particle size of the emulsified and dispersed organic release agent is not particularly limited, but may be 1 μm
The following is preferred. If the average particle size of the organic release agent exceeds 1 μm, the release performance and non-migratory property of the release agent layer may be reduced, or the storage stability of the aqueous dispersion type release agent composition may be impaired.
【００２６】本発明による離型シートの製造方法に用い
られる上記水分散系離型剤組成物には、表面張力を所望
の表面張力に調整するために、以下に例示するような表
面張力調整剤の１種もしくは２種以上が含有されていて
も良い。In order to adjust the surface tension to a desired surface tension, the water-dispersed release agent composition used in the method for producing a release sheet according to the present invention has a surface tension adjuster as exemplified below. May be contained alone or in combination of two or more.
【００２７】上記水分散系離型剤組成物の表面張力を上
げて親水化を図るための表面張力調整剤としては、特に
限定されるものではないが、例えば、塩化カリウム、塩
化ナトリウム等のイオン性解離物質等が挙げられ、これ
らの１種もしくは２種以上が、水分散系離型剤組成物が
所望の表面張力となるような添加量で、好適に用いられ
る。The surface tension adjuster for increasing the surface tension of the aqueous dispersion type release agent composition to achieve hydrophilicity is not particularly limited. For example, ionic agents such as potassium chloride and sodium chloride may be used. And one or more of these are suitably used in an amount such that the water-dispersed release agent composition has a desired surface tension.
【００２８】又、上記水分散系離型剤組成物の表面張力
を下げて疎水化を図るための表面張力調整剤としては、
特に限定されるものではないが、例えば、ジオクチルス
ルホ琥珀酸ナトリウムやポリオキシエチレンノニルフェ
ニルエーテルのような低分子界面活性剤、カルボン酸型
ビニル重合体のナトリウム塩のような高分子界面活性
剤、脂肪酸もしくはその金属塩、酸変性ポリオレフィン
（共）重合体等が挙げられ、これらの１種もしくは２種
以上が、水分散系離型剤組成物が所望の表面張力となる
ような添加量で、好適に用いられる。As the surface tension modifier for lowering the surface tension of the aqueous dispersion release agent composition to achieve hydrophobicity,
Although not particularly limited, for example, low molecular surfactants such as sodium dioctyl sulfosuccinate and polyoxyethylene nonylphenyl ether, high molecular surfactants such as sodium salt of a carboxylic acid type vinyl polymer, Fatty acids or metal salts thereof, acid-modified polyolefin (co) polymers, and the like. One or more of these are added in such an amount that the aqueous dispersion release agent composition has a desired surface tension. It is preferably used.
【００２９】本発明においては、上記水分散系離型剤組
成物の表面張力は、前記シート基材の表面張力との関連
で、上げられても良いし下げられても良いが、塗工乾燥
後の離型剤層に残存する表面張力調整剤の影響（例え
ば、粘着剤層への移行や離型剤層の吸湿等）を考慮する
と、水分散系離型剤組成物については表面張力を下げて
疎水化を図る方向である方が好ましい。In the present invention, the surface tension of the aqueous dispersion release agent composition may be raised or lowered in relation to the surface tension of the sheet substrate. In consideration of the influence of the surface tension adjuster remaining in the subsequent release agent layer (for example, migration to the pressure-sensitive adhesive layer or moisture absorption of the release agent layer), the surface tension of the aqueous dispersion type release agent composition is reduced. It is preferable that the direction is lowered to achieve hydrophobicity.
【００３０】上記水分散系離型剤組成物の表面張力は、
特に限定されるものではないが、ウイルヘルミー法等、
従来公知の溶液の表面張力測定方法で測定すれば良く、
例えば、動的接触角試験機（型式「ＷＥＴ−６００
０」、レスカ社製）等により測定することが出来る。The surface tension of the aqueous dispersion release agent composition is as follows:
Although not particularly limited, such as the Wilhelmy method,
What is necessary is just to measure by the conventionally known method of measuring the surface tension of a solution,
For example, a dynamic contact angle tester (model “WET-600”)
0 ", manufactured by Resca Corporation).
【００３１】本発明による離型シートの製造方法に用い
られる上述の水分散系離型剤組成物には、主成分である
有機離型剤、表面張力を調整するための上記表面張力調
整剤以外に、本発明の課題達成を阻害しない範囲で必要
に応じて、高分子界面活性剤、脂肪酸もしくはその金属
塩、酸変性ポリエチレン樹脂のような酸変性ポリオレフ
ィン（共）重合体、ワックス類、疎水性シリカ微粒子、
充填剤、顔料、染料、軟化剤、可塑剤、導電化剤、架橋
剤、消泡剤、溶剤等の各種添加剤の１種もしくは２種以
上が含有されていても良い。The water-dispersed release agent composition used in the method for producing a release sheet according to the present invention includes an organic release agent as a main component and a surface tension adjusting agent for adjusting surface tension. If necessary, a polymer surfactant, a fatty acid or a metal salt thereof, an acid-modified polyolefin (co) polymer such as an acid-modified polyethylene resin, waxes, hydrophobic Silica fine particles,
One or more of various additives such as a filler, a pigment, a dye, a softener, a plasticizer, a conductive agent, a crosslinking agent, an antifoaming agent, and a solvent may be contained.
【００３２】又、上記水分散系離型剤組成物は、貯蔵安
定性等が損なわれない範囲で必要に応じて、水で希釈さ
れていても良い。The aqueous dispersion release agent composition may be diluted with water, if necessary, as long as storage stability and the like are not impaired.
【００３３】本発明による離型シートの製造方法におい
ては、前述したシート基材の表面張力（γB ）と上述し
た水分散系離型剤組成物の表面張力（γW ）との差（γ
B −γW ）が−１〜＋２０ｄｙｎ／ｃｍであることが必
要である。In the method for producing a release sheet according to the present invention, the difference (γ) between the surface tension (γ B ) of the above-mentioned sheet substrate and the surface tension (γ W ) of the above-mentioned aqueous dispersion type release agent composition is obtained.
B− γ W ) needs to be −1 to +20 dyn / cm.
【００３４】上記表面張力の差（γB −γW ）が−１ｄ
ｙｎ／ｃｍ未満であると、シート基材面で水分散系離型
剤組成物が弾いて塗工出来ず、逆に表面張力の差（γB
−γ W ）が＋２０ｄｙｎ／ｃｍを超えると、塗工量を少
なくしても、水分散系離型剤組成物が均一に塗工され過
ぎて有機離型剤微粒子のシート基材面での分布が均一に
なり過ぎ、適度な不均一塗工が出来なくなるため、離型
性を任意且つ容易に調節することが困難となる。The difference in surface tension (γB−γW) Is -1d
If it is less than yn / cm, the aqueous dispersion release on the sheet substrate surface
The composition cannot be applied by flipping, and conversely the difference in surface tension (γB
−γ W) Exceeds +20 dyn / cm, the coating amount is small.
Even if it is lost, the water-dispersed release agent composition is
Distribution of fine particles of organic release agent on the sheet substrate
Mold release because it will not be possible to perform moderate uneven coating
It is difficult to arbitrarily and easily adjust the properties.
【００３５】本発明による離型シートの製造方法におけ
る塗工方法は、特別なものではなく、上記表面張力の差
（γB −γW ）が−１〜＋２０ｄｙｎ／ｃｍである前述
のシート基材と上述の水分散系離型剤組成物を使用し、
シート基材の片面（片面離型シートの場合）もしくは両
面（両面離型シートの場合）に、ロールコーター、グラ
ビアコーター、メイヤーバーコーター、リップコーター
等の従来公知の塗工装置を用いて、水分散系離型剤組成
物を塗工した後、例えば、加熱可能な乾燥炉を通して、
加熱下で水分散系離型剤組成物の水を揮散させ、乾燥・
造膜させることにより所望の片面もしくは両面離型シー
トを得れば良い。The coating method in the method for producing a release sheet according to the present invention is not particularly limited, and the above-mentioned sheet base material having the above-mentioned difference in surface tension (γ B −γ W ) of -1 to +20 dyn / cm. Using the aqueous dispersion release agent composition and the above,
Water is applied to one side (in the case of a single-sided release sheet) or both sides (in the case of a double-sided release sheet) of a sheet substrate using a conventionally known coating apparatus such as a roll coater, a gravure coater, a Meyer bar coater, or a lip coater. After coating the dispersion release agent composition, for example, through a heatable drying oven,
The water of the aqueous dispersion release agent composition is volatilized under heating, dried,
A desired single-sided or double-sided release sheet may be obtained by forming a film.
【００３６】シート基材に対する水分散系離型剤組成物
の塗工量は、特に限定されるものではないが、乾燥後の
重量で片面あたり０．０１〜５ｇ／ｍ2 であることが好
ましい。上記乾燥後の塗工量が片面あたり０．０１ｇ／
ｍ2 未満であると、十分な離型性を得られず、逆に乾燥
後の塗工量が片面あたり５ｇ／ｍ2 を超えると、加熱乾
燥に長時間を要して生産性が低下するのみならず、離型
剤層の非移行性も低下する。The amount of the aqueous dispersion-based release agent composition applied to the sheet substrate is not particularly limited, but is preferably 0.01 to 5 g / m 2 per one side by weight after drying. . The coating amount after drying is 0.01 g / side
When it is less than m 2 , sufficient releasability cannot be obtained. On the contrary, when the coating amount after drying exceeds 5 g / m 2 per side, it takes a long time for heating and drying, and productivity is reduced. In addition, the non-migratory property of the release agent layer is reduced.
【００３７】[0037]
【作用】本発明による離型シートの製造方法は、水分散
系離型剤組成物を用い、且つ、シート基材の表面張力
（γB ）と水分散系離型剤組成物の表面張力（γW ）と
の差（γB −γW ）が特定されているので、通常の塗工
装置を使用して塗工量を増減するのみで、離型性を任意
且つ容易に調節することが出来る。The method for producing a release sheet according to the present invention uses a water-dispersed release agent composition, and uses the surface tension (γ B ) of the sheet substrate and the surface tension of the water-dispersed release agent composition (γ B ). γ W ), the difference (γ B −γ W ) is specified, so that it is possible to arbitrarily and easily adjust the releasability simply by increasing or decreasing the coating amount using a normal coating device. I can do it.
【００３８】即ち、上記表面張力の差（γB −γW ）が
−１ｄｙｎ／ｃｍ以上で小さくなればなるほど、又、塗
工量が少なくなればなるほど、水分散系離型剤組成物中
の有機離型剤微粒子はシート基材面により不均一に分布
し、１ｍｍ2 以下の微小な非塗工部がより多くなるの
で、粘着加工品の粘着剤層から離型シートを剥離する時
の力（展開力）が高くなり、離型性が低下する。これに
対し、上記表面張力の差（γB −γW ）が＋２０ｄｙｎ
／ｃｍ未満で大きくなればなるほど、又、塗工量が多く
なればなるほど、水分散系離型剤組成物中の有機離型剤
微粒子はシート基材面により均一に分布し、微小な非塗
工部がより少なくなるので、展開力が低くなり、離型性
が向上する。That is, as the difference (γ B −γ W ) of the surface tension becomes smaller at −1 dyn / cm or more, and as the coating amount becomes smaller, the amount of the aqueous dispersion-based release agent composition becomes smaller. The organic release agent fine particles are unevenly distributed on the surface of the sheet substrate, and the number of minute uncoated portions of 1 mm 2 or less increases, so that the force required to peel the release sheet from the adhesive layer of the adhesive processed product is increased. (Deployment force) increases, and the releasability decreases. In contrast, the difference in surface tension (γ B −γ W ) is +20 dyn.
/ Cm, the larger the amount of coating, the greater the amount of coating, the more the organic release agent particles in the aqueous dispersion-based release agent composition are more uniformly distributed on the sheet substrate surface, and Since the number of processed parts is smaller, the deployment force is reduced, and the releasability is improved.
【００３９】上記のような作用は、有機離型剤を有機溶
剤に溶解して得られる溶剤系離型剤組成物を用いる場合
には認められず、本発明のように水分散系離型剤組成物
を用いる場合にのみ認められる。The above-mentioned effects are not recognized when a solvent-based release agent composition obtained by dissolving an organic release agent in an organic solvent is used. Only allowed when using the composition.
【００４０】即ち、溶剤系離型剤組成物の場合、離型剤
組成物中の有機離型剤は、水分散系離型剤組成物の場合
のようなμｍ単位の微粒子としてではなく、オングスト
ローム（Å）単位で分子分散しているので、シート基材
の表面張力と溶剤系離型剤組成物の表面張力との差の大
小にかかわらず、又、塗工量の多少にかかわらず、シー
ト基材面に均一に塗工され、水分散系離型剤組成物の場
合に見られるような微小な非塗工部は生じない。従っ
て、溶剤系離型剤組成物の場合、通常の塗工装置を用い
る限り、本発明のようにシート基材の表面張力と離型剤
組成物の表面張力との差を特定しても、離型性を任意且
つ容易に調節することは困難である。That is, in the case of the solvent-based release agent composition, the organic release agent in the release agent composition is not in the form of fine particles in the order of μm as in the case of the water-dispersed release agent composition. (Å) Because the molecules are dispersed in units, regardless of the difference between the surface tension of the sheet base material and the surface tension of the solvent-based release agent composition, and regardless of the coating amount, The coating is uniformly applied on the surface of the base material, and a fine non-coated portion as seen in the case of the aqueous dispersion release agent composition does not occur. Therefore, in the case of the solvent-based release agent composition, as long as a normal coating apparatus is used, even if the difference between the surface tension of the sheet substrate and the surface tension of the release agent composition is specified as in the present invention, It is difficult to arbitrarily and easily adjust the releasability.
【００４１】[0041]
【発明の実施の形態】本発明をさらに詳しく説明するた
め以下に実施例を挙げるが、本発明はこれら実施例に限
定されるものではない。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
【００４２】[0042]
【００４３】１．シート基材の準備 以下に示す４種類のシート基材を準備した。尚、シート
基材の表面張力は「濡れ指数標準液」（和光純薬工業社
製）で測定した。イ .シート基材（Ｋ） 坪量７５ｇ／ｍ2 のクルパッククラフト紙にポリエチレ
ンを厚み２０μｍで押出しラミネートしたポリエチレン
コート紙（表面張力：３０ｄｙｎ／ｃｍ）ロ .シート基材（ＫＣ１） シート基材（Ｋ）のポリエチレン面をコロナ処理したも
の（表面張力：４３ｄｙｎ／ｃｍ）ハ .シート基材（ＫＣ２） シート基材（Ｋ）のポリエチレン面をコロナ処理したも
の（表面張力：３９ｄｙｎ／ｃｍ）ニ .シート基材（ＰＥＴＣ） 厚み２５μｍのポリエチレンテレフタレートフィルムを
コロナ処理したもの（表面張力：５４ｄｙｎ／ｃｍ）1. Preparation of sheet base material The following four types of sheet base materials were prepared. In addition, the surface tension of the sheet base material was measured with a "wetting index standard solution" (manufactured by Wako Pure Chemical Industries, Ltd.). A. Sheet base material (K) Polyethylene coated paper (surface tension: 30 dyn / cm) obtained by extruding and laminating polyethylene to a thickness of 20 μm on Krupak kraft paper having a basis weight of 75 g / m 2 b. Sheet base material (KC1) Sheet base material (K) Corona-treated polyethylene surface (surface tension: 43 dyn / cm) c. Sheet substrate (KC2) Sheet substrate (K) corona-treated polyethylene surface (surface tension: 39 dyn / cm) .Sheet substrate (PETC) 25 μm thick polyethylene terephthalate film treated with corona (surface tension: 54 dyn / cm)
【００４４】２．有機離型剤の合成 以下に示す方法で３種類の有機離型剤を合成した。 (1) 有機離型剤（Ｒ１） 攪拌機、冷却器、滴下漏斗及び温度計を備えた反応容器
中に、脱水したキシレン５０ｇを投入した後、酢酸ビニ
ル（共）重合体として、鹸化された酢酸ビニル重合体
〔ポリビニルアルコール（重合度１１００、鹸化度９８
モル％）〕１０ｇを加えて均一に分散させた。次いで、
還流温度で、長鎖アルキル化合物として、オクタデシル
イソシアネート６７ｇ（水酸基に対する官能基量１当
量）、及び、反応触媒として、ジラウリン酸ジブチル錫
０．０１ｇを加え、上記ポリビニルアルコールと反応さ
せた。反応が進行し、ポリビニルアルコールの粉末が完
全に消失した後、さらに２時間反応を継続した。反応終
了後、４０℃まで冷却し、反応溶液を１０００ｇのメタ
ノール中に注いで、白色沈殿物を得た。得られた白色沈
殿物をメタノール、次いで、ｎ−ヘキサンで洗浄した
後、乾燥して、有機離型剤（Ｒ１）を得た。2. Synthesis of Organic Release Agent Three kinds of organic release agents were synthesized by the following method. (1) Organic release agent (R1) 50 g of dehydrated xylene was put into a reaction vessel equipped with a stirrer, a cooler, a dropping funnel and a thermometer, and saponified acetic acid was obtained as a vinyl acetate (co) polymer. Vinyl polymer [polyvinyl alcohol (degree of polymerization 1100, degree of saponification 98
Mol%)] and dispersed uniformly. Then
At the reflux temperature, 67 g of octadecyl isocyanate (1 equivalent of a functional group to a hydroxyl group) as a long-chain alkyl compound and 0.01 g of dibutyltin dilaurate as a reaction catalyst were added to react with the polyvinyl alcohol. After the reaction proceeded and the polyvinyl alcohol powder completely disappeared, the reaction was continued for another 2 hours. After completion of the reaction, the mixture was cooled to 40 ° C., and the reaction solution was poured into 1000 g of methanol to obtain a white precipitate. The obtained white precipitate was washed with methanol and then with n-hexane, and then dried to obtain an organic release agent (R1).
【００４５】(2) 有機離型剤（Ｒ２） 酢酸ビニル（共）重合体として、ポリビニルアルコール
の代わりに、鹸化されたエチレン−酢酸ビニル共重合体
〔エチレン−ビニルアルコール共重合体（重合度１５０
０、鹸化度６９モル％、エチレン共重合比３０モル
％）〕１０ｇを使用し、オクタデシルイソシアネートの
使用量を５７ｇ（水酸基に対する官能基量１当量）とし
たこと以外は(1) と同様にして、有機離型剤（Ｒ２）を
得た。尚、ここで言う鹸化度は、ビニルアルコール共重
合比を意味する。(2) Organic release agent (R2) As a vinyl acetate (co) polymer, a saponified ethylene-vinyl acetate copolymer [ethylene-vinyl alcohol copolymer (degree of polymerization 150) instead of polyvinyl alcohol
0, saponification degree 69 mol%, ethylene copolymerization ratio 30 mol%)], and the same procedure as in (1) except that the amount of octadecyl isocyanate used was 57 g (the amount of functional group to hydroxyl group was 1 equivalent). And an organic release agent (R2). Here, the degree of saponification means a vinyl alcohol copolymerization ratio.
【００４６】(3) 有機離型剤（Ｒ３） 攪拌機、冷却器、滴下漏斗及び温度計を備えた反応容器
中に、脱水したピリジン３００ｇを投入した後、酢酸ビ
ニル（共）重合体として、エチレン−ビニルアルコール
共重合体（重合度１５００、鹸化度６９モル％、エチレ
ン共重合比３０モル％）１０ｇを加えて均一に分散させ
た。次いで、８０℃で、長鎖アルキル化合物として、オ
クタデシロイルクロライド８０ｇ（水酸基に対する官能
基量１当量）を加え、上記エチレン−ビニルアルコール
共重合体と反応させた。反応が進行し、エチレン−ビニ
ルアルコール共重合体の粉末が完全に消失した後、さら
に２時間反応を継続した。反応終了後、４０℃まで冷却
し、反応溶液を１５００ｇのメタノール中に注いで、白
色沈殿物を得た。得られた白色沈殿物をメタノール、次
いで、ｎ−ヘキサンで洗浄した後、乾燥して、有機離型
剤（Ｒ３）を得た。(3) Organic release agent (R3) 300 g of dehydrated pyridine was charged into a reaction vessel equipped with a stirrer, a cooler, a dropping funnel and a thermometer. 10 g of a vinyl alcohol copolymer (degree of polymerization 1500, degree of saponification 69 mol%, ethylene copolymerization ratio 30 mol%) was added and uniformly dispersed. Next, at 80 ° C., 80 g of octadecyloyl chloride (1 equivalent of a functional group based on a hydroxyl group) was added as a long-chain alkyl compound, and reacted with the ethylene-vinyl alcohol copolymer. After the reaction proceeded and the powder of the ethylene-vinyl alcohol copolymer completely disappeared, the reaction was continued for another 2 hours. After the completion of the reaction, the mixture was cooled to 40 ° C., and the reaction solution was poured into 1500 g of methanol to obtain a white precipitate. The obtained white precipitate was washed with methanol and then with n-hexane, and then dried to obtain an organic release agent (R3).
【００４７】３．離型剤組成物の調製 以下に示す方法で３種類の水分散系離型剤組成物、及
び、１種類の溶剤系離型剤組成物を調製した。 (a) 水分散系離型剤組成物（ＷＲ１） 有機離型剤の合成(1)で得られた有機離型剤（Ｒ１）１
３５ｇ、高分子界面活性剤（カルボン酸型ビニル重合体
のナトリウム塩、重量平均分子量４０００）４９ｇ、ワ
ックス（モノステアリル尿素、融点１００℃）５ｇ及び
高沸点溶剤（トリデカン）１５ｇから成る離型剤組成物
を９５℃で溶融し、攪拌速度５００ｒｐｍで１０分間攪
拌・混合した。次に、高圧式乳化機中で、得られた溶融
混合物を攪拌速度１０００ｒｐｍで攪拌しながら、１０
０℃に加熱・加圧された界面活性剤水溶液〔ソルビタン
モノステアレート（重量平均分子量４３０）１ｇ＋水４
９ｇ〕５０ｇをゆっくり滴下し、離型剤組成物中に水を
分散させ、Ｗ／Ｏ型の水分散系離型剤組成物を得た。そ
の後、攪拌速度を５０００ｒｐｍに上げ、水７４６ｇを
順次滴下して転相乳化を行い、Ｏ／Ｗ型の水分散系離型
剤組成物（ＷＲ１）を得た。得られた水分散系離型剤組
成物（ＷＲ１）を所定濃度になるまで水で希釈し、レー
ザー回折散乱式粒度分布計（型式「９２２０ＦＲＡ」、
ＭＩＣＲＯＴＲＡＣ社製）を用いて、体積平均粒子径を
測定したところ、０．３９μｍであった。3. Preparation of Release Agent Composition Three types of aqueous dispersion type release agent compositions and one type of solvent-based release agent composition were prepared by the following methods. (a) Water-dispersed release agent composition (WR1) Synthesis of organic release agent (1) Organic release agent (R1) 1 obtained in (1)
Release agent composition comprising 35 g, 49 g of high molecular surfactant (sodium salt of carboxylic acid type vinyl polymer, weight average molecular weight 4000), 5 g of wax (monostearyl urea, melting point 100 ° C.) and 15 g of high boiling point solvent (tridecane) The material was melted at 95 ° C., and stirred and mixed at a stirring speed of 500 rpm for 10 minutes. Next, in a high-pressure emulsifier, the obtained molten mixture was stirred at a stirring speed of 1000 rpm for 10 minutes.
Surfactant aqueous solution heated and pressurized to 0 ° C. [sorbitan monostearate (weight average molecular weight: 430) 1 g + water 4
9g] 50 g was slowly dropped, and water was dispersed in the release agent composition to obtain a W / O-type water-dispersed release agent composition. Thereafter, the stirring speed was increased to 5000 rpm, and 746 g of water was sequentially added dropwise to perform phase inversion emulsification to obtain an O / W type aqueous dispersion release agent composition (WR1). The obtained water-dispersed release agent composition (WR1) was diluted with water until a predetermined concentration was reached, and the resultant was dispersed with a laser diffraction / scattering type particle size distribution meter (model “9220FRA”,
MICROTRAC) was used to measure the volume average particle diameter, which was 0.39 μm.
【００４８】(b) 水分散系離型剤組成物（ＷＲ２） 有機離型剤の合成(2) で得られた有機離型剤（Ｒ２）を
用いたこと以外は(a)の場合と同様にして、水分散系離
型剤組成物（ＷＲ２）を得た。得られた水分散系離型剤
組成物（ＷＲ２）の体積平均粒子径を(a) の場合と同様
にして測定したところ、０．３２μｍであった。(B) Aqueous dispersion release agent composition (WR2) Synthesis of organic release agent Same as (a) except that the organic release agent (R2) obtained in (2) was used. Thus, an aqueous dispersion release agent composition (WR2) was obtained. When the volume average particle diameter of the obtained aqueous dispersion release agent composition (WR2) was measured in the same manner as in the case of (a), it was 0.32 μm.
【００４９】(c) 水分散系離型剤組成物（ＷＲ３） 有機離型剤の合成(3) で得られた有機離型剤（Ｒ３）を
用いたこと以外は(a)の場合と同様にして、水分散系離
型剤組成物（ＷＲ３）を得た。得られた水分散系離型剤
組成物（ＷＲ３）の体積平均粒子径を(a) の場合と同様
にして測定したところ、０．３７μｍであった。(C) Water-dispersed release agent composition (WR3) Synthesis of organic release agent Same as (a) except that the organic release agent (R3) obtained in (3) was used. Thus, an aqueous dispersion release agent composition (WR3) was obtained. When the volume average particle diameter of the obtained aqueous dispersion release agent composition (WR3) was measured in the same manner as in (a), it was 0.37 μm.
【００５０】(d) 溶剤系離型剤組成物（ＯＲ１） 有機離型剤の合成(1)で得られた有機離型剤（Ｒ１）１
３５ｇをトルエン８６５ｇに溶解して、溶剤系離型剤組
成物（ＯＲ１）を得た。(D) Solvent-based release agent composition (OR1) Synthesis of organic release agent The organic release agent (R1) 1 obtained in (1)
35 g was dissolved in 865 g of toluene to obtain a solvent-based release agent composition (OR1).
【００５１】（実施例１）(Example 1)
【００５２】（１）離型シートの製造 水分散系離型剤組成物（ＷＲ１）を、有機離型剤（Ｒ
１）の含有量が２重量％となるように水で希釈した後、
表面張力調製剤としてジオクチルスルホ琥珀酸ナトリウ
ムを含有量が０．０４重量％となるように添加し、均一
に攪拌混合して、表面張力調整剤を含有する水分散系離
型剤組成物の希釈液を得た。(1) Production of Release Sheet The water-dispersed release agent composition (WR1) was treated with an organic release agent (R).
After dilution with water so that the content of 1) is 2% by weight,
As a surface tension adjusting agent, sodium dioctyl sulfosuccinate is added so as to have a content of 0.04% by weight, and uniformly stirred and mixed to dilute the aqueous dispersion release agent composition containing the surface tension adjusting agent. A liquid was obtained.
【００５３】上記で得られた水分散系離型剤組成物の希
釈液を、予め準備したシート基材（ＫＣ１）のコロナ処
理面（表面張力：４３ｄｙｎ／ｃｍ）に、マイヤーバー
コーターを用いて塗工した。尚、この時、マイヤーバー
コーターは＃０〜＃７を使用し、乾燥後の塗工量は、表
１に示すように、０．０２ｇ／ｍ2 、０．０５ｇ／
ｍ 2 、０．０８ｇ／ｍ2 、０．１０ｇ／ｍ2 、０．１５
ｇ／ｍ2 、０．２０ｇ／ｍ 2 、０．２５ｇ／ｍ2 及び
０．３０ｇ／ｍ2 の８段階とした。次いで、水分散系離
型剤組成物の希釈液が塗工されたシート基材（ＫＣ１）
を、炉長１ｍ、温度１２０℃の乾燥炉中をライン速度２
ｍ／分で通し、水分散系離型剤組成物の希釈液を乾燥・
造膜させて、離型シートを製造した。The water-dispersed release agent composition obtained above was diluted
The diluting solution is subjected to a corona treatment of a previously prepared sheet base material (KC1).
Surface (surface tension: 43 dyn / cm), Meyer bar
Coating was performed using a coater. At this time, the Meyer bar
Use # 0 to # 7 for the coater.
As shown in FIG. 1, 0.02 g / mTwo, 0.05 g /
m Two, 0.08 g / mTwo, 0.10 g / mTwo, 0.15
g / mTwo, 0.20 g / m Two, 0.25 g / mTwoas well as
0.30 g / mTwo8 steps. Then, the aqueous dispersion
Sheet base material coated with diluent of mold composition (KC1)
At a line speed of 2 in a drying oven with a furnace length of 1 m and a temperature of 120 ° C.
m / min to dry and dilute the aqueous dispersion release agent composition diluent.
A release sheet was produced by film formation.
【００５４】（２）評価 上記で得られた水分散系離型剤組成物の希釈液及び離型
シートの性能（表面張力、展開力、離型性）を以
下の方法で評価した。その結果は表１に示すとおりであ
った。(2) Evaluation The performance (surface tension, developing force, and releasability) of the diluent and release sheet of the aqueous dispersion release agent composition obtained above were evaluated by the following methods. The results were as shown in Table 1.
【００５５】表面張力：動的接触角試験機（型式「Ｗ
ＥＴ−６０００」、レスカ社製）を用いて、ウイルヘル
ミー法により、表面張力調整剤を含有する水分散系離型
剤組成物の希釈液の表面張力（ｄｙｎ／ｃｍ）を測定し
た。 Surface tension: Dynamic contact angle tester (model “W
The surface tension (dyn / cm) of the diluent of the aqueous dispersion release agent composition containing the surface tension modifier was measured by the Wilhelmy method using "ET-6000" (manufactured by Resca).
【００５６】展開力：ＪＩＳ Ｚ−０２３７「粘着テ
ープ・粘着シート試験方法」に準拠し、離型シートの離
型剤組成物塗工面に、幅２５ｍｍの短冊状に裁断された
粘着テープ（商品名「クラフトテープ＃５０４」、積水
化学工業社製）を圧着ローラーで貼り付けて試験片を作
製し、２３℃−６５％ＲＨの雰囲気下に２４時間放置し
た。その後、同雰囲気下で、高速剥離試験機を用い、１
０ｍ／分の剥離速度で、１８０度引き剥がし試験を行
い、展開力（ｇ／２５ｍｍ）を測定した。 Developing force : adhesive tape (trade name) cut into 25 mm wide strips on the release agent composition coated surface of the release sheet according to JIS Z-0237 "Testing method for adhesive tapes and adhesive sheets""Craft tape # 504" (manufactured by Sekisui Chemical Co., Ltd.) was adhered with a pressure roller to prepare a test piece, which was left in an atmosphere of 23 ° C. and 65% RH for 24 hours. Then, under the same atmosphere, using a high-speed peeling tester,
A 180 degree peeling test was performed at a peeling speed of 0 m / min, and a developing force (g / 25 mm) was measured.
【００５７】離型性：展開力の結果に基づき、下記
判定基準で離型性を評価した。Releasability: The releasability was evaluated based on the result of the developing force according to the following criteria.
Ｈ‥‥重すぎる離型性（展開力：４５０ｇ／２５ｍｍ
超） ○‥‥適正な離型性（展開力：１８０〜４５０ｇ／２５
ｍｍ） Ｌ‥‥軽すぎる離型性（展開力：１８０ｇ／２５ｍｍ未
満）H ‥‥ Releasability too heavy (deployment force: 450 g / 25 mm
○) Appropriate releasability (development force: 180-450g / 25)
mm) L ‥‥ Release property too light (development force: less than 180 g / 25 mm)
【００５８】（実施例２）離型シートの製造において、
水分散系離型剤組成物（ＷＲ２）を用いたこと以外は実
施例１と同様にして、表面張力調整剤を含有する水分散
系離型剤組成物の希釈液、及び、離型シートを得た。Example 2 In the production of a release sheet,
In the same manner as in Example 1 except that the water-dispersed release agent composition (WR2) was used, a diluent of the water-dispersed release agent composition containing a surface tension modifier and a release sheet were prepared. Obtained.
【００５９】（実施例３）離型シートの製造において、
水分散系離型剤組成物（ＷＲ３）を用いたこと以外は実
施例１と同様にして、表面張力調整剤を含有する水分散
系離型剤組成物の希釈液、及び、離型シートを得た。Example 3 In the production of a release sheet,
In the same manner as in Example 1 except that the water-dispersed release agent composition (WR3) was used, a diluent of the water-dispersed release agent composition containing a surface tension modifier and a release sheet were prepared. Obtained.
【００６０】（実施例４）シート基材（ＫＣ２）を用い
たこと以外は実施例１と同様にして、離型シートを得
た。Example 4 A release sheet was obtained in the same manner as in Example 1 except that the sheet substrate (KC2) was used.
【００６１】（実施例５）離型シートの製造において、
水分散系離型剤組成物（ＷＲ１）に対する表面張力調整
剤（ジオクチルスルホ琥珀酸ナトリウム）の含有量を
０．０１重量％としたこと以外は実施例１と同様にし
て、表面張力調整剤を含有する水分散系離型剤組成物の
希釈液、及び、離型シートを得た。Example 5 In the production of a release sheet,
A surface tension adjuster was prepared in the same manner as in Example 1 except that the content of the surface tension adjuster (sodium dioctyl sulfosuccinate) with respect to the aqueous dispersion release agent composition (WR1) was 0.01% by weight. A diluent of a water-dispersed release agent composition and a release sheet were obtained.
【００６２】（実施例６）シート基材（ＰＥＴＣ）を用
いたこと以外は実施例１と同様にして、離型シートを得
た。Example 6 A release sheet was obtained in the same manner as in Example 1 except that a sheet base material (PETC) was used.
【００６３】実施例２、３及び５で得られた表面張力調
整剤を含有する水分散系離型剤組成物の希釈液の表面
張力、及び、実施例２〜６で得られた離型シートの展
開力及び離型性を実施例１と同様にして評価した。そ
の結果は表１に示すとおりであった。The surface tension of the diluent of the aqueous dispersion release agent composition containing the surface tension regulator obtained in Examples 2, 3 and 5, and the release sheet obtained in Examples 2 to 6 Was evaluated in the same manner as in Example 1. The results were as shown in Table 1.
【００６４】（比較例１）離型シートの製造において、
水分散系離型剤組成物（ＷＲ１）に対し表面張力調整剤
（ジオクチルスルホ琥珀酸ナトリウム）を含有させなか
ったこと以外は実施例１と同様にして、水分散系離型剤
組成物の希釈液を得た。次いで、実施例１と同様にし
て、離型シートの製造を行ったが、上記水分散系離型剤
組成物の希釈液がシート基材（ＫＣ１）面で弾いて塗工
出来ず、離型シートを得ることが出来なかった。(Comparative Example 1) In the production of a release sheet,
Dilution of the water-dispersed release agent composition in the same manner as in Example 1 except that the surface tension modifier (sodium dioctyl sulfosuccinate) was not contained in the water-dispersed release agent composition (WR1). A liquid was obtained. Next, a release sheet was manufactured in the same manner as in Example 1. However, the diluent of the aqueous dispersion-based release agent composition was repelled on the sheet substrate (KC1) surface and could not be applied. I could not get a sheet.
【００６５】（比較例２）シート基材（Ｋ）を用いたこ
と以外は実施例１と同様にして、離型シートの製造を行
ったが、表面張力調整剤を含有する水分散系離型剤組成
物（ＷＲ１）の希釈液がシート基材（Ｋ）面で弾いて塗
工出来ず、離型シートを得ることが出来なかった。(Comparative Example 2) A release sheet was produced in the same manner as in Example 1 except that the sheet substrate (K) was used, but an aqueous dispersion containing a surface tension modifier was released. The diluent of the agent composition (WR1) was repelled on the sheet substrate (K) side, and could not be applied, and a release sheet could not be obtained.
【００６６】（比較例３）離型シートの製造において、
離型剤組成物として、溶剤系離型剤組成物（ＯＲ１）を
有機離型剤（Ｒ１）の含有量が２重量％となるようにト
ルエンで希釈した希釈液を用いたこと以外は実施例１と
同様にして、離型シートを得た。(Comparative Example 3) In the production of a release sheet,
Example 1 was repeated except that a solvent-based release agent composition (OR1) was diluted with toluene so that the content of the organic release agent (R1) was 2% by weight. In the same manner as in Example 1, a release sheet was obtained.
【００６７】（比較例４）シート基材（Ｋ）を用いたこ
と以外は比較例３と同様にして、離型シートを得た。(Comparative Example 4) A release sheet was obtained in the same manner as in Comparative Example 3 except that the sheet substrate (K) was used.
【００６８】比較例１で得た水分散系離型剤組成物の希
釈液及び比較例３で得た溶剤系離型剤組成物の希釈液の
表面張力、及び、比較例３及び４で得た離型シートの
展開力及び離型性を実施例１と同様にして評価し
た。その結果は表１に示すとおりであった。The surface tension of the diluent of the aqueous dispersion-based release agent composition obtained in Comparative Example 1 and the diluent of the solvent-based release agent composition obtained in Comparative Example 3, and the diluent obtained in Comparative Examples 3 and 4 The developing force and the releasability of the released release sheet were evaluated in the same manner as in Example 1. The results were as shown in Table 1.
【００６９】[0069]
【表１】 表１に示されるように、水分散系離型剤組成物を用い、
シート基材の表面張力と水分散系離型剤組成物の表面張
力との差が−１〜＋２０ｄｙｎ／ｃｍである実施例１〜
６の離型シートは、塗工量を増減することにより、離型
性（展開力）を任意且つ容易に調節することが出来た。[Table 1] As shown in Table 1, using the aqueous dispersion release agent composition,
Examples 1 to 5 in which the difference between the surface tension of the sheet substrate and the surface tension of the aqueous dispersion release agent composition was -1 to +20 dyn / cm.
In the release sheet No. 6, the releasability (developing force) could be arbitrarily and easily adjusted by increasing or decreasing the coating amount.
【００７０】これに対し、シート基材の表面張力と水分
散系離型剤組成物の表面張力との差が−１〜＋２０ｄｙ
ｎ／ｃｍを逸脱している比較例１及び２の場合、水分散
系離型剤組成物がシート基材面で弾いて塗工出来ず、離
型シートを得ることが出来なかった。又、溶剤系離型剤
組成物を用いた比較例３及び４の離型シートは、塗工量
を増減しても離型性（展開力）の調節を行うことが出来
なかった。On the other hand, the difference between the surface tension of the sheet substrate and the surface tension of the aqueous dispersion type release agent composition is -1 to +20 dy.
In the case of Comparative Examples 1 and 2, which deviated from n / cm, the water-dispersed release agent composition was repelled on the sheet substrate surface and could not be applied, so that a release sheet could not be obtained. In the case of the release sheets of Comparative Examples 3 and 4 using the solvent-based release agent composition, the releasability (developing force) could not be adjusted even when the coating amount was increased or decreased.
【００７１】[0071]
【発明の効果】以上述べたように、本発明の製造方法に
よれば、通常の塗工装置を使用して塗工量を増減するの
みで、目的、用途等に応じて離型性を任意に調節した離
型シートを簡便に得ることが出来る。As described above, according to the production method of the present invention, it is only necessary to increase or decrease the amount of coating using a normal coating apparatus, and the mold releasability can be arbitrarily determined according to the purpose and application. The release sheet adjusted to the above can be easily obtained.
Claims (1)
離型剤組成物を塗工、乾燥する離型シートの製造方法で
あって、シート基材の表面張力（γB ）と水分散系離型
剤組成物の表面張力（γW ）との差（γB −γW ）が−
１〜＋２０ｄｙｎ／ｃｍであることを特徴とする離型シ
ートの製造方法。1. A method for producing a release sheet, comprising applying a water-dispersed release agent composition to at least one surface of a sheet substrate and drying the same, wherein the surface tension (γ B ) of the sheet substrate and the aqueous dispersion The difference (γ B −γ W ) from the surface tension (γ W ) of the release agent composition is −
A method for producing a release sheet, which is 1 to +20 dyn / cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33350096A JPH10168406A (en) | 1996-12-13 | 1996-12-13 | Production of release sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33350096A JPH10168406A (en) | 1996-12-13 | 1996-12-13 | Production of release sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10168406A true JPH10168406A (en) | 1998-06-23 |
Family
ID=18266756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33350096A Pending JPH10168406A (en) | 1996-12-13 | 1996-12-13 | Production of release sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10168406A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002069876A (en) * | 2000-08-22 | 2002-03-08 | Nippon Paper Industries Co Ltd | Method for deinking waste paper |
| WO2014150116A1 (en) * | 2013-03-15 | 2014-09-25 | Illinois Tool Works Inc. | Transfer foils utilizing plasma treatment to replace the release layer |
| JP2016040852A (en) * | 2015-12-24 | 2016-03-24 | タツタ電線株式会社 | Shield film, shield printed wiring board, and method for manufacturing shield printed wiring board |
| JP2016076728A (en) * | 2015-12-24 | 2016-05-12 | タツタ電線株式会社 | Shield film, shield printed wiring board and method of manufacturing shield printed wiring board |
| KR20200121021A (en) * | 2019-04-15 | 2020-10-23 | 도레이첨단소재 주식회사 | Fluoro release film |
-
1996
- 1996-12-13 JP JP33350096A patent/JPH10168406A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002069876A (en) * | 2000-08-22 | 2002-03-08 | Nippon Paper Industries Co Ltd | Method for deinking waste paper |
| WO2014150116A1 (en) * | 2013-03-15 | 2014-09-25 | Illinois Tool Works Inc. | Transfer foils utilizing plasma treatment to replace the release layer |
| JP2016040852A (en) * | 2015-12-24 | 2016-03-24 | タツタ電線株式会社 | Shield film, shield printed wiring board, and method for manufacturing shield printed wiring board |
| JP2016076728A (en) * | 2015-12-24 | 2016-05-12 | タツタ電線株式会社 | Shield film, shield printed wiring board and method of manufacturing shield printed wiring board |
| KR20200121021A (en) * | 2019-04-15 | 2020-10-23 | 도레이첨단소재 주식회사 | Fluoro release film |
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