JP2001059075A - Silicone-based releasant and separator using the same, and adhesive tape or sheet - Google Patents
Silicone-based releasant and separator using the same, and adhesive tape or sheetInfo
- Publication number
- JP2001059075A JP2001059075A JP11234885A JP23488599A JP2001059075A JP 2001059075 A JP2001059075 A JP 2001059075A JP 11234885 A JP11234885 A JP 11234885A JP 23488599 A JP23488599 A JP 23488599A JP 2001059075 A JP2001059075 A JP 2001059075A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- adhesive tape
- silicone
- sheet
- sensitive adhesive
- 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)
- Paints Or Removers (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電子線や放射線を用
いて滅菌処理しても、剥離力に変化が生じにくいる新規
な剥離剤およびこれを用いてなるセパレータ、並びに粘
着テープもしくはシートに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel release agent whose peeling force is hardly changed even when sterilized by using an electron beam or radiation, a separator using the same, and an adhesive tape or sheet. It is.
【０００２】[0002]
【従来の技術】粘着テープやシートは、従来から各種用
途に用いられているが、例えば医療用途に用いる場合、
通常、エチレンオキサイドガスによる滅菌処理（ＥＯＧ
滅菌）を行ったり、電子線やγ線などの放射線滅菌処理
を行うことが一般的である。2. Description of the Related Art Adhesive tapes and sheets have been used for various purposes.
Usually, sterilization treatment with ethylene oxide gas (EOG)
(Sterilization) or radiation sterilization treatment such as electron beam or γ-ray.
【０００３】しかしながら、ＥＯＧは発癌性や遺伝的障
害を起こしやすいといった問題がある。[0003] However, EOG has a problem that it is susceptible to carcinogenicity and genetic disorders.
【０００４】また、放射線滅菌も最近盛んに行われるよ
うになっているが、粘着剤層面を被覆保護するセパレー
タの剥離力が照射後に大きくなり、所謂重剥離現象を生
起して、製品不良を起こす場合がある。In addition, radiation sterilization has recently become popular, but the peeling force of the separator for covering and protecting the adhesive layer surface increases after irradiation, causing a so-called heavy peeling phenomenon to cause a product defect. There are cases.
【０００５】このような実状から、近年は粘着テープや
シートに用いる粘着剤として、放射線照射を行っても重
剥離現象を生じないホットメルトタイプの粘着剤が用い
られるようになったが、粘着剤溶液を塗布、乾燥する従
来タイプの製造設備を使用できず、ホットメルト専用の
製造設備が必要となり、コスト高となる。[0005] Under such circumstances, in recent years, a hot-melt type adhesive which does not cause a heavy peeling phenomenon even when irradiated with radiation has been used as an adhesive for an adhesive tape or sheet. Conventional manufacturing equipment for applying and drying the solution cannot be used, and a manufacturing equipment dedicated to hot melt is required, resulting in an increase in cost.
【０００６】[0006]
【発明が解決しようとする課題】そこで、本発明者ら
は、アクリル系粘着剤に代表される従来タイプの粘着剤
溶液の塗布、乾燥型の設備で製造した粘着テープもしく
はシートであっても、放射線照射後に重剥離現象を生じ
ないような剥離剤を開発すべく、検討を重ねた結果、特
定の官能基を有するシリコーン系剥離剤を用いることに
よって、優れた剥離性能を発揮する粘着テープもしくは
シートが得られることを見い出し、本発明を完成するに
至った。Accordingly, the present inventors have developed a conventional adhesive tape represented by an acrylic adhesive, and a pressure-sensitive adhesive tape or sheet manufactured with a drying-type facility. As a result of repeated studies to develop a release agent that does not cause a heavy release phenomenon after radiation irradiation, an adhesive tape or sheet that demonstrates excellent release performance by using a silicone-based release agent with a specific functional group Was found, and the present invention was completed.
【０００７】[0007]
【課題を解決するための手段】即ち、本発明は 分子内
に下記式にて表される官能基を含むジメチルシロキサン
を含むことを特徴とするシリコーン系剥離剤。That is, the present invention provides a silicone-based release agent comprising a dimethylsiloxane containing a functional group represented by the following formula in the molecule.
【０００８】[0008]
【化２】 を提供するものである。Embedded image Is provided.
【０００９】さらに、本発明は、上記のシリコーン系剥
離剤を、１〜７ｇ／ｍ2 の範囲で基材上に塗布してなる
ことを特徴とするセパレータを提供するものである。Further, the present invention provides a separator characterized in that the above-mentioned silicone-based release agent is applied on a substrate in a range of 1 to 7 g / m 2 .
【００１０】さらにまた、本発明は、上記のセパレータ
を粘着剤層の表面に積層してなることを特徴とする粘着
テープもしくはシートを提供するものである。Further, the present invention provides a pressure-sensitive adhesive tape or sheet comprising the above-mentioned separator laminated on the surface of a pressure-sensitive adhesive layer.
【００１１】[0011]
【発明の実施の形態】本発明のシリコーン系剥離剤は、
上記したようにケイ素原子に水素原子を少なくとも１個
結合した基と、ケイ素原子にビニル基を少なくとも１個
結合した基を分子内に含むジメチルシロキサンを成分と
するものである。BEST MODE FOR CARRYING OUT THE INVENTION The silicone release agent of the present invention comprises:
As described above, dimethylsiloxane containing a group in which at least one hydrogen atom is bonded to a silicon atom and a group in which at least one vinyl group is bonded to a silicon atom in a molecule is used as a component.
【００１２】ケイ素原子に水素原子を少なくとも１個の
結合した基は、本発明においてシリコーン系剥離剤の被
膜を形成する際に架橋作用に寄与するものであり、ケイ
素原子にビニル基を少なくとも１個結合した基は、本発
明において上記架橋反応によって被膜を硬化させる作用
を発揮する基である。The group in which at least one hydrogen atom is bonded to a silicon atom contributes to a crosslinking action when forming a film of a silicone-based release agent in the present invention, and at least one vinyl group is bonded to a silicon atom. The bonded group is a group that exerts the effect of curing the coating by the crosslinking reaction in the present invention.
【００１３】後者のケイ素原子にビニル基を少なくとも
１個結合した基は、ジメチルシロキサン中、０．０５〜
５０モル％、好ましくは０．２〜１０モル％の範囲で含
有することが好ましく、含有量が少なすぎると、充分な
架橋硬化被膜が得られにくく、重剥離防止効果を充分に
発揮できない。また、多すぎると架橋硬化被膜の剥離抵
抗が大きくなって放射線照射などによって架橋した場合
に、重剥離化となる恐れがある。The latter group in which at least one vinyl group is bonded to a silicon atom is used in dimethylsiloxane in an amount of from 0.05 to
The content is preferably 50 mol%, preferably in the range of 0.2 to 10 mol%. If the content is too small, it is difficult to obtain a sufficient crosslinked cured film, and the effect of preventing heavy peeling cannot be sufficiently exerted. On the other hand, if the amount is too large, the peeling resistance of the crosslinked cured film becomes large, and when crosslinked by irradiation of radiation or the like, heavy peeling may occur.
【００１４】一方、前者のケイ素原子に水素原子を少な
くとも１個結合した基をもつ成分は、ヒドロシリル化反
応で使用されるものであればよく、その配合量は後者の
ケイ素原子にビニル基を少なくとも１個結合した基の量
と略等モル程度とすることが好ましい。通常、後者のケ
イ素原子にビニル基を少なくとも１個結合した基を有す
る成分１００重量部に対して０．５〜４０重量部程度と
する。On the other hand, the former component having a group in which at least one hydrogen atom is bonded to a silicon atom may be used as long as it is used in a hydrosilylation reaction, and its compounding amount is at least a vinyl group in the latter silicon atom. It is preferable that the amount is approximately equimolar to the amount of one bonded group. Usually, the amount is about 0.5 to 40 parts by weight based on 100 parts by weight of the latter component having at least one vinyl group bonded to a silicon atom.
【００１５】このようなシリコーン系剥離剤としては、
例えば以下の構造式に示されるものが挙げられる。[0015] Such silicone-based release agents include:
For example, those represented by the following structural formulas are exemplified.
【００１６】[0016]
【化３】 Embedded image
【００１７】また、具体的には、信越化学社製のＫＮＳ
−３０５や、ＫＮＳ−３０７などを用いることができ
る。Specifically, KNS manufactured by Shin-Etsu Chemical Co., Ltd.
-305 or KNS-307 can be used.
【００１８】本発明のシリコーン系剥離剤は上記のよう
な特定の構造を有するジメチルシロキサンを含有するも
のであるが、反応制御剤として２−メチル−３−ブチン
−２−オールや、触媒としてのジメチルシロキサンオイ
ル、その他各種アルコール類、エーテル類などを所望に
より適宜配合してもよいものである。The silicone-based release agent of the present invention contains dimethylsiloxane having a specific structure as described above. However, 2-methyl-3-butyn-2-ol as a reaction control agent and a catalyst as a catalyst are used. Dimethylsiloxane oil, other various alcohols, ethers, and the like may be appropriately compounded as required.
【００１９】本発明では、上記のシリコーン系系剥離剤
を、基材上に１〜７ｇ／ｍ2 、好ましくは２〜６ｇ／ｍ
2 の範囲で塗布することによって、粘着テープやシート
における粘着剤層面を被覆保護するためのセパレータと
することができる。基材表面への塗布は、片面でも両面
でもよい。In the present invention, the above-mentioned silicone-based release agent is applied on a substrate in an amount of 1 to 7 g / m 2 , preferably 2 to 6 g / m 2.
By applying in the range of 2 , a separator for covering and protecting the pressure-sensitive adhesive layer surface of the pressure-sensitive adhesive tape or sheet can be obtained. The application to the substrate surface may be one side or both sides.
【００２０】塗布量が１ｇ／ｍ2 に満たない場合には、
電子線やγ線などの放射線を照射して滅菌処理を施した
場合、重剥離現象を防止することができず、７ｇ／ｍ2
を超える塗布量では、重剥離現象の防止はできるが、粘
着テープやシートにおける粘着剤層中に剥離剤が移行し
たり、粘着剤層表面に剥離剤が転着して、セパレータと
しての性能低下に陥る恐れがある。When the coating amount is less than 1 g / m 2 ,
When sterilization is performed by irradiating radiation such as electron beam or γ-ray, the heavy peeling phenomenon cannot be prevented, and 7 g / m 2
When the amount of coating exceeds, the heavy release phenomenon can be prevented, but the release agent migrates into the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape or sheet, or the release agent transfers to the surface of the pressure-sensitive adhesive layer, and the performance as a separator deteriorates. May fall into
【００２１】本発明のセパレータにおいて、前記シリコ
ーン系剥離剤を塗布する基材としては、その材質に制限
はなく、各種プラスチックフィルム、布帛、金属箔、紙
などを用いることができる。In the separator of the present invention, the material on which the silicone-based release agent is applied is not particularly limited, and various plastic films, fabrics, metal foils, papers, and the like can be used.
【００２２】本発明の粘着テープもしくはシートは、支
持基材の片面または両面に粘着剤層を形成し、粘着剤層
の表面に上記セパレータを、剥離剤処理面が接するよう
にして積層したものである。The pressure-sensitive adhesive tape or sheet of the present invention is obtained by forming a pressure-sensitive adhesive layer on one or both surfaces of a support substrate, and laminating the above separator on the surface of the pressure-sensitive adhesive layer such that the release agent-treated surface is in contact therewith. is there.
【００２３】支持基材としては、特に限定されず、上記
セパレータと同様、各種プラスチックフィルム、布帛、
金属箔、紙などを用いることができる。また、厚みは通
常、２５〜１００μｍ程度のものが好適である。The support substrate is not particularly limited, and various plastic films, cloths,
Metal foil, paper, or the like can be used. The thickness is preferably about 25 to 100 μm.
【００２４】上記支持基材の表面に形成する粘着剤層と
しては、常温で粘着性を有するものであれば限定されな
いが、放射線での劣化が少ないという点から、アクリル
系粘着剤を用いることが好ましい。アクリル系粘着剤と
しては、炭素数が４〜１８のアルキル基を有する（メ
タ）アクリル酸アルキルエステルを粘着性を付与するた
めの主成分単量体とし、これに凝集力付与成分としての
官能性単量体を共重合したものが好適に用いることがで
きる。官能性単量体としては、アクリル酸やメタクリル
酸などのカルボキシル基を有する単量体や、ヒドロキシ
ル基、アミド基、アミノ基などを有する単量体が挙げら
れる。The pressure-sensitive adhesive layer formed on the surface of the support substrate is not limited as long as it has tackiness at room temperature. However, an acrylic pressure-sensitive adhesive may be used because it is less deteriorated by radiation. preferable. As the acrylic pressure-sensitive adhesive, a (meth) acrylic acid alkyl ester having an alkyl group having 4 to 18 carbon atoms is used as a main component monomer for imparting adhesiveness, and the functionality as a cohesive force imparting component is added thereto. Those obtained by copolymerizing monomers can be suitably used. Examples of the functional monomer include a monomer having a carboxyl group such as acrylic acid and methacrylic acid, and a monomer having a hydroxyl group, an amide group, an amino group, and the like.
【００２５】[0025]
【発明の効果】本発明は、以上のように特定の構造を有
するジメチルシロキサンを含有する剥離剤を用いたもの
であるので、アクリル系粘着剤に代表される従来タイプ
の粘着剤溶液の塗布、乾燥型の設備で製造した粘着テー
プもしくはシートであっても、放射線照射後に重剥離現
象を生じず、優れた剥離性能を発揮するセパレータや、
粘着テープもしくはシートを作製することができるので
ある。Since the present invention uses a release agent containing dimethylsiloxane having a specific structure as described above, it is possible to apply a conventional type adhesive solution represented by an acrylic adhesive, Even with an adhesive tape or sheet manufactured in a dry-type facility, a separator that does not cause a heavy peeling phenomenon after irradiation and exhibits excellent peeling performance,
An adhesive tape or sheet can be produced.
【００２６】[0026]
【実施例】以下に本発明の実施例を示し、さらに具体的
に説明するが、本発明はこれらに限定されるものではな
く、本発明の技術的思想を逸脱しない範囲内で種々の応
用が可能である。なお、以下の文中で「部」とあるのは
「重量部」を意味する。EXAMPLES Examples of the present invention will be described below in more detail, but the present invention is not limited thereto, and various applications can be made without departing from the technical idea of the present invention. It is possible. In the following text, “parts” means “parts by weight”.
【００２７】実施例１ 不活性ガス雰囲気下で、２−エチルヘキシルアクリレー
ト９５部、アクリル酸５部からなる単量体混合物を、重
合開始剤としての過酸化ベンゾイル０．２部の存在下、
酢酸エチル中で共重合してアクリル系の粘着剤溶液を作
製した。Example 1 Under an inert gas atmosphere, a monomer mixture consisting of 95 parts of 2-ethylhexyl acrylate and 5 parts of acrylic acid was mixed with 0.2 part of benzoyl peroxide as a polymerization initiator.
An acrylic pressure-sensitive adhesive solution was prepared by copolymerization in ethyl acetate.
【００２８】得られたアクリル系粘着剤溶液から厚み５
０μｍの粘着剤層を作製し、これを支持基材としてのポ
リエステルフィルムの片面に転着して、粘着テープを作
製した。From the obtained acrylic pressure-sensitive adhesive solution, a thickness of 5
A pressure-sensitive adhesive layer having a thickness of 0 μm was prepared, and this was transferred to one surface of a polyester film as a support substrate, to prepare a pressure-sensitive adhesive tape.
【００２９】一方、２５μｍ厚のポリエステルフィルム
の片面に、信越化学社製の無溶剤シリコーン系剥離剤
（商品名：ＫＮＳ−３０５）を、塗布量が２ｇ／ｍ2 と
なるようにメイヤーバーで塗布し、１３０℃で５分間乾
燥して、本発明のセパレータを作製した。On the other hand, a solvent-free silicone release agent (trade name: KNS-305) manufactured by Shin-Etsu Chemical Co., Ltd. was applied to one side of a 25 μm-thick polyester film with a Mayer bar so that the application amount was 2 g / m 2. Then, the resultant was dried at 130 ° C. for 5 minutes to produce the separator of the present invention.
【００３０】次いで、このセパレータにおける剥離剤塗
布面に、上記にて作製した粘着テープの粘着剤層を積層
して、本発明の粘着テープを作製した。Next, the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape prepared above was laminated on the release agent-coated surface of the separator to prepare a pressure-sensitive adhesive tape of the present invention.
【００３１】実施例２および３ 剥離剤の塗布量を表１に記載する塗布量とした以外は、
実施例１と同様にして、本発明のセパレータおよび粘着
テープを作製した。Examples 2 and 3 Except that the amount of the release agent applied was set to the amount shown in Table 1,
In the same manner as in Example 1, a separator and an adhesive tape of the present invention were produced.
【００３２】比較例１および２ 剥離剤の塗布量を表１に記載する塗布量とした以外は、
実施例１と同様にして、セパレータおよび粘着テープを
作製した。Comparative Examples 1 and 2 Except that the amount of the release agent applied was set to the amount shown in Table 1,
A separator and an adhesive tape were produced in the same manner as in Example 1.
【００３３】上記各実施例および比較例にて得た粘着テ
ープに、３０ｋＧｙの電子線を照射し、以下の特性を評
価した。結果を表１に併記した。なお、電子線照射前の
値を対照として併記した。The adhesive tapes obtained in the above Examples and Comparative Examples were irradiated with an electron beam of 30 kGy, and the following characteristics were evaluated. The results are shown in Table 1. The values before electron beam irradiation are also shown as a control.
【００３４】＜剥離力＞各粘着テープを５０ｍｍ幅、１
２０ｍｍ長さの試験片に裁断し、引張試験機を用いて粘
着テープからセパレータを剥離除去する際の剥離力を測
定した。（引張速度３００ｍｍ／分、１８０度ピーリン
グ試験、常温）<Peeling Force> Each adhesive tape was 50 mm wide, 1
The test piece was cut into a test piece having a length of 20 mm, and the peeling force when the separator was peeled off from the adhesive tape was measured using a tensile tester. (Pulling speed 300mm / min, 180 degree peeling test, normal temperature)
【００３５】＜保持力＞各粘着テープを１０ｍｍ幅、１
００ｍｍ長さの試験片に裁断し、フェノール樹脂板の表
面に、２ｋｇのゴムローラを用い、５０ｍｍ／分の速度
で１往復で試験片の片端を貼着し、４０℃で２０分間放
置した（貼着面積１０ｍｍ×２０ｍｍ）。<Holding force> Each adhesive tape was 10 mm wide, 1
A test piece having a length of 00 mm was cut, and one end of the test piece was adhered to the surface of the phenol resin plate in one reciprocation at a speed of 50 mm / min using a 2 kg rubber roller, and left at 40 ° C. for 20 minutes (paste). Landing area 10 mm x 20 mm).
【００３６】次いで、試験片の貼着していない片端に３
００ｇの荷重を吊下し、樹脂板から試験片がずり落ち落
下するまでの時間を測定した。Next, three ends were attached to one end of the test piece where the test piece was not attached.
A load of 00 g was suspended, and the time required for the test piece to slip down from the resin plate and fall was measured.
【００３７】＜カウント数＞シリコーン系剥離剤の塗布
量を、理学社製システム３２７０Ｅ蛍光Ｘ線で、５０ｋ
Ｖ、５０ｍＡの条件で測定し、カウント数（ｋｃｐｓ）
から算出した。<Count> The coating amount of the silicone-based release agent was measured at 50k using a system 3270E fluorescent X-ray manufactured by Rigaku Corporation.
V, measured under the conditions of 50 mA, count number (kcps)
Calculated from
【００３８】[0038]
【表１】 [Table 1]
【００３９】上記表１から明らかなように、本発明にて
得られた粘着テープの剥離力と保持力は、比較例品と比
べて剥離力と保持力の変動が少ないものであることが明
らかである。As is clear from Table 1 above, the peeling force and the holding force of the pressure-sensitive adhesive tape obtained by the present invention have a smaller variation in the peeling force and the holding force than those of the comparative example. It is.
Claims (3)
むジメチルシロキサンを含むことを特徴とするシリコー
ン系剥離剤。 【化１】 1. A silicone-based release agent comprising a dimethylsiloxane containing a functional group represented by the following formula in the molecule. Embedded image
１〜７ｇ／ｍ2 の範囲で基材上に塗布してなることを特
徴とするセパレータ。2. The silicone-based release agent according to claim 1,
A separator characterized by being coated on a substrate in a range of 1 to 7 g / m 2 .
表面に積層してなることを特徴とする粘着テープもしく
はシート。3. A pressure-sensitive adhesive tape or sheet comprising the separator according to claim 2 laminated on the surface of a pressure-sensitive adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11234885A JP2001059075A (en) | 1999-08-23 | 1999-08-23 | Silicone-based releasant and separator using the same, and adhesive tape or sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11234885A JP2001059075A (en) | 1999-08-23 | 1999-08-23 | Silicone-based releasant and separator using the same, and adhesive tape or sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001059075A true JP2001059075A (en) | 2001-03-06 |
Family
ID=16977856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11234885A Pending JP2001059075A (en) | 1999-08-23 | 1999-08-23 | Silicone-based releasant and separator using the same, and adhesive tape or sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001059075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009078560A (en) * | 2008-11-19 | 2009-04-16 | Lintec Corp | Release sheet and pressure-sensitive adhesive element |
-
1999
- 1999-08-23 JP JP11234885A patent/JP2001059075A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009078560A (en) * | 2008-11-19 | 2009-04-16 | Lintec Corp | Release sheet and pressure-sensitive adhesive element |
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