JPH08291274A - Double coated adhesive sheet - Google Patents
Double coated adhesive sheetInfo
- Publication number
- JPH08291274A JPH08291274A JP9664895A JP9664895A JPH08291274A JP H08291274 A JPH08291274 A JP H08291274A JP 9664895 A JP9664895 A JP 9664895A JP 9664895 A JP9664895 A JP 9664895A JP H08291274 A JPH08291274 A JP H08291274A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- sheet
- double
- base material
- silicone
- 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
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、支持体であるシ−ト状
基材の両面に粘着剤層が設けられ、該粘着剤層が、シリ
コ─ン系剥離ライナで被覆された両面粘着シ─トに関す
る。さらに詳しくは、両面粘着シ─トの一方の粘着剤層
が、例えば天然ゴム、クロロプレンゴム、ＥＰＤＭゴ
ム、ブチルゴム等のゴムシ−ト又は、これらの発泡体に
貼り合わせられた構成物において、他方の粘着剤層が剥
離ライナに被覆されている状態で長期間放置されても剥
離ライナの剥離力が大きく上昇しない両面粘着シ−トを
提供するものである。BACKGROUND OF THE INVENTION The present invention relates to a double-sided pressure-sensitive adhesive sheet in which a sheet-like base material as a support is provided with pressure-sensitive adhesive layers on both sides, and the pressure-sensitive adhesive layer is covered with a silicone-based release liner. ─ Regarding To More specifically, one adhesive layer of the double-sided adhesive sheet is a rubber sheet of, for example, natural rubber, chloroprene rubber, EPDM rubber, butyl rubber, etc. It is intended to provide a double-sided pressure-sensitive adhesive sheet in which the peeling force of the release liner does not increase significantly even if the release liner is left for a long period of time while being covered with the release liner.
【０００２】[0002]
【従来の技術】天然ゴム、クロロプレンゴム、ＥＰＤＭ
ゴム、ブチルゴム等のゴムシ─トや発泡体は、これら材
料がもつ制振、防音、断熱、シ−ル性等の機能を各種構
造物に付与させるため、自動車、家電、建築等の分野で
多く使用されている。2. Description of the Related Art Natural rubber, chloroprene rubber, EPDM
Rubber sheets and foams such as rubber and butyl rubber are often used in the fields of automobiles, home appliances, construction, etc. in order to give various structures the functions of these materials such as vibration damping, soundproofing, heat insulation, and sealability. in use.
【０００３】ゴムシ−トやゴム系の発泡体を各種構造物
に接合する際、紙、不織布、織布、プラスチックフィル
ム等のシ−ト状基材を支持体とし、その両面に粘着剤層
が設けられると共に、粘着剤層がシリコ─ン系剥離ライ
ナで被覆された両面粘着シ−トが使用されることがあ
る。When bonding a rubber sheet or a rubber-based foam to various structures, a sheet-like base material such as paper, non-woven fabric, woven cloth, plastic film or the like is used as a support, and an adhesive layer is provided on both sides thereof. A double-sided pressure-sensitive adhesive sheet, which is provided and whose pressure-sensitive adhesive layer is coated with a silicone-based release liner, may be used.
【０００４】この場合、ゴムシ─ト等に両面粘着シ─ト
を貼り合わせた構成物は、それを接着させようとする被
着体に施工される前に、予めゴムシ─ト等と両面粘着シ
─トを貼り合わせ加工された状態で保存されていること
が多く、その場合、両面粘着シ─トのゴムシ─ト等と貼
り合わせた反対側の粘着剤層は、剥離ライナにて被覆さ
れた状態で長期間保存されることになる。In this case, the structure in which the double-sided adhesive sheet is attached to the rubber sheet or the like, the double-sided adhesive sheet and the rubber sheet are preliminarily attached to the adherend to which it is to be attached. -In many cases, it is stored in a state where it is laminated and processed. In that case, the adhesive layer on the opposite side of the double-sided adhesive sheet, which is laminated with the rubber sheet, is covered with a release liner. It will be stored for a long time in the state.
【０００５】しかしながら、従来の両面粘着シ−トを使
用した場合、ゴムシ−トやゴム系発泡体に両面粘着シ−
トを貼り合わせた構成物の状態で、長期間保存される
と、両面粘着シ−トの粘着剤層を保護している、剥離ラ
イナの剥離力が上昇し、その現象が著しい場合には、剥
離ライナが剥がせなくなり、施工時に使用することがで
きなくなることがあった。However, when the conventional double-sided adhesive sheet is used, the double-sided adhesive sheet is attached to the rubber sheet or the rubber foam.
In the state of the laminated composition, when it is stored for a long period of time, the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive sheet is protected, the peeling force of the release liner increases, and when the phenomenon is remarkable, The release liner could not be peeled off and could not be used during construction.
【０００６】上記の剥離力上昇現象の問題は、剥離ライ
ナに使用されているシリコ−ン系剥離剤の種類とシリコ
−ンの硬化条件によって変動することがわかっており、
このような問題を解決するためにシリコ─ン系剥離剤の
種類を変えようとすると、剥離ライナを剥がそうとする
ときの剥離力が変化してしまって施工時の作業性が悪く
なることがあり、又、同じ剥離レベルを有する他のシリ
コ─ン系剥離剤を使用した場合には同様の現象が起こり
やすくシリコ─ンの選定が難しい。更に、剥離ライナ製
造時のシリコ─ン乾燥（硬化）工程を十分に行うことも
剥離力上昇を抑制する為に効果があると考えられるが、
この場合、剥離ライナの生産性が著しく低下したり、剥
離ライナの種類によっては、基材の変質のために本質的
に乾燥工程を十分に行うことができないなどの問題点が
残っており、どのようなシリコ─ン系剥離ライナを使用
しても、ゴム系の被着体に貼り合わせたときの剥離力上
昇の問題が発生しない、本質的な解決手段を施した両面
粘着シ─トは、見いだされていなかった。It has been known that the above-mentioned problem of the peeling force increase phenomenon varies depending on the type of the silicone-based release agent used in the release liner and the curing conditions of the silicone,
If you try to change the type of silicone release agent to solve such a problem, the peeling force when you try to peel off the release liner may change and workability during construction may deteriorate. However, when another silicone-based release agent having the same release level is used, the same phenomenon is likely to occur and selection of the silicone is difficult. Further, it is considered that a sufficient silicone drying (curing) step at the time of manufacturing the release liner is also effective in suppressing the increase in the peeling force.
In this case, the productivity of the release liner remarkably decreases, and depending on the type of the release liner, there still remain problems such that the drying step cannot be sufficiently performed due to the deterioration of the base material. Even if such a silicone-based release liner is used, the double-sided adhesive sheet with an essential solution does not cause the problem of increased peeling force when bonded to a rubber-based adherend. It wasn't found.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、粘着剤層が
シリコ─ン系剥離ライナで被覆されてなる両面粘着シ─
トで、一方の粘着剤層が天然ゴム、クロロプレンゴム、
ＥＰＤＭゴム、ブチルゴム等のゴムシ─ト又は、これら
の発泡体に貼り合わせられ、もう一方の粘着剤層がシリ
コ─ン系剥離ライナで被覆されている構成物の状態で長
期間保存されても剥離ライナの剥離力が大きく上昇しな
い両面粘着シ─トを得ることを目的とする。DISCLOSURE OF THE INVENTION The present invention is a double-sided adhesive sheet having an adhesive layer coated with a silicone-based release liner.
One adhesive layer is natural rubber, chloroprene rubber,
A rubber sheet such as EPDM rubber or butyl rubber, or a sheet of these foams, and the other adhesive layer is coated with a silicone-based release liner. The purpose is to obtain a double-sided adhesive sheet that does not significantly increase the peeling force of the liner.
【０００８】[0008]
【課題を解決するための手段】本発明は、シ─ト状基材
の両面に粘着剤層が設けられた両面粘着シ─トにおい
て、シ─ト状基材に酸が付着されるとともに、粘着剤層
がシリコ─ン系剥離ライナで被覆されてなることを特徴
とする両面粘着シ─トを提供するものである。DISCLOSURE OF THE INVENTION The present invention is a double-sided pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer provided on both sides of a sheet-shaped base material, wherein an acid is attached to the sheet-shaped base material, A double-sided pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer coated with a silicone-based release liner.
【０００９】[0009]
【作用】両面粘着シ─トの支持体に酸が付着されたシ─
ト状基材を使用することによって、両面粘着シ─トをゴ
ムシ─トやゴム発泡体等のゴム系の被着体に貼り合わせ
たときの、シリコ─ン系剥離ライナの剥離力の上昇を防
止することができる。酸が付着されたシ─ト状基材を支
持体に使用することによって、両面粘着シ─トをゴム等
に貼り合わせたときの、シリコ─ン系剥離ライナの剥離
力上昇を抑制することができるメカニズムについては充
分に解明されていないが、酸が付着されていないシ─ト
状基材の場合には、シリコ─ン系剥離ライナと粘着剤層
の界面にゴム中の添加物が移行してきているのに対し
て、酸が付着されたシ─ト状基材を使用した場合には、
上記のような移行現象が確認されないという分析事実よ
り、剥離ライナの剥離力上昇を引き起こしている要因が
ゴム中の移行成分にあると仮定した場合には、シ─ト状
基材に酸が付着されることによって、ゴム中の成分が移
行しにくくなるか、あるいは、移行してきてもシ─ト状
基材で捕捉されてシリコ─ン系剥離ライナまで到達しな
くなる為に、剥離力の上昇が抑制されていると推測する
ことができる。[Function] A double-sided adhesive sheet with acid attached to the support
By using a double-sided base material, the peeling force of the silicone release liner is increased when the double-sided adhesive sheet is attached to a rubber-based adherend such as a rubber sheet or a rubber foam. Can be prevented. By using a sheet-like base material to which an acid is attached as a support, it is possible to suppress an increase in the release force of the silicone release liner when the double-sided adhesive sheet is attached to rubber or the like. Although the mechanism by which it is formed has not been fully clarified, in the case of a sheet-like substrate to which no acid is attached, additives in the rubber will migrate to the interface between the silicone release liner and the adhesive layer. On the other hand, when using a sheet-shaped substrate to which an acid is attached,
From the analytical fact that the above migration phenomenon is not confirmed, if it is assumed that the migration component in the rubber is the cause of the increase in the peeling force of the release liner, the acid adheres to the sheet-like base material. As a result, the components in the rubber are less likely to migrate, or even if they migrate, they are trapped by the sheet-like base material and do not reach the silicone-based peeling liner, so the peeling force increases. It can be inferred that it is suppressed.
【００１０】[0010]
【実施例】以下、本発明の実施例について説明する。本
発明において、両面粘着シ─トの支持体として使用され
るシ─ト状基材としては、従来から両面粘着シ─ト用の
支持体として使用されてきた材料をいずれも使用するこ
とができ特に限定されるものではなく、パルプ、レ─ヨ
ン繊維、ポリエステル繊維、ビニロン繊維、ナイロン繊
維等を原料とした織布あるいは不織布、又はポリエステ
ル、ポリプロピレン、ポリエチレン、ポリ塩化ビニルな
どのプラスチックフィルム、さらにポリエチレン、ブチ
ルゴム等の発泡体を使用することができる。なかでも、
シ─ト状基材に対して酸を付着させるという観点から
は、酸溶液を基材内部に含浸固定化させることのできる
織布、不織布などの繊維状シ─ト基材が特に好ましい。
シ─ト状基材の厚さは加工性及び作業性の点から５μｍ
以上、好ましくは、１０〜１０００μｍである。Embodiments of the present invention will be described below. In the present invention, as the sheet-like base material used as the support for the double-sided adhesive sheet, any material conventionally used as the support for the double-sided adhesive sheet can be used. The woven or non-woven fabric made of pulp, rayon fiber, polyester fiber, vinylon fiber, nylon fiber, or the like, or a plastic film such as polyester, polypropylene, polyethylene, or polyvinyl chloride, and polyethylene are not particularly limited. Foam such as butyl rubber can be used. Above all,
From the viewpoint of adhering the acid to the sheet-like base material, a fibrous sheet base material such as a woven fabric or a non-woven fabric capable of impregnating and fixing an acid solution inside the base material is particularly preferable.
The thickness of the sheet-shaped substrate is 5 μm from the viewpoint of workability and workability.
As described above, the thickness is preferably 10 to 1000 μm.
【００１１】本発明のシ─ト状基材に付着させる酸とし
ては、酸を付着させることによってシ─ト状基材の引っ
張り、引き裂き、伸び等の機械的強度を著しく低下させ
るものでなければ特に限定されず、シ─ト状基材の耐酸
性のレベルに応じて選択すれば良く、無機酸、有機酸等
いずれも本発明の目的である、シリコ─ン系剥離ライナ
の剥離力上昇性の防止に使用することができる。例え
ば、パルプ、レ─ヨン繊維等を原料とする不織布をシ─
ト状基材として使用する場合には、クエン酸、リンゴ
酸、アクリル酸、酢酸、蟻酸、ポリアクリル酸等の脂肪
族有機酸やリン酸、亜リン酸等の無機酸が、シ─ト状基
材の耐酸性レベルとの兼ね合いから好ましい。The acid to be adhered to the sheet-like base material of the present invention must be one that does not markedly reduce the mechanical strength of the sheet-like base material such as pulling, tearing or elongation by attaching the acid. It is not particularly limited and may be selected according to the level of acid resistance of the sheet-like base material, and any of inorganic acids, organic acids, etc., which is the object of the present invention, is the increase in the peeling force of the silicone release liner. It can be used to prevent For example, a nonwoven fabric made from pulp, rayon fiber, etc.
When used as a sheet-like base material, aliphatic organic acids such as citric acid, malic acid, acrylic acid, acetic acid, formic acid, polyacrylic acid, and inorganic acids such as phosphoric acid and phosphorous acid are used as sheet materials. It is preferable in consideration of the acid resistance level of the base material.
【００１２】シ─ト状基材への酸の付着方法としては、
上記の酸溶液を、マイヤ─バ─、バ─コ─タ─、エア─
ナイフコ─タ─、ロッドコ─タ─、ナイフコ─タ─、含
浸コ─タ─、キスロ─ルコ─タ─等の方法によって、支
持体であるシ─ト状基材に塗布、浸漬あるいは、含浸さ
せて付着させ、その後乾燥させて作製される。As a method of attaching the acid to the sheet-shaped substrate,
Add the above acid solution to a maker bar, bar coater, air
By applying, dipping, or impregnating the sheet-shaped base material, which is a support, by a method such as knife coater, rod coater, knife coater, impregnation coater, and kiss coater. It is made to adhere and then dried.
【００１３】シ─ト状基材への酸の付着量は０．１〜５
ｇ／ｍ2 、好ましくは０．５〜３．０ｇ／ｍ2 である。
なお、０．１ｇ／ｍ2 未満であると両面粘着シ─トをゴ
ムシ─ト等に貼合わせたときの剥離ライナの剥離力上昇
性が大きくなり、効果が小さく、また、５ｇ／ｍ2 を超
えると、シ─ト状基材に不織布を使用した場合には不織
布の柔軟性が損なわれると共に、不織布の機械的強度が
低下する事があるため、両面粘着シ─ト用の支持体とし
て使用することができなくなることがある。The amount of acid attached to the sheet-like base material is 0.1 to 5
g / m 2, preferably from 0.5 to 3.0 g / m 2.
Incidentally, it is greater peel force increase of the release liner when the laminated is less than 0.1 g / m 2 The double-sided pressure-sensitive adhesive sheet ─ preparative to Gomushi ─ bets like, the effect is small, also the 5 g / m 2 If it exceeds the limit, the flexibility of the non-woven fabric may be impaired and the mechanical strength of the non-woven fabric may be reduced when the non-woven fabric is used for the sheet-like base material, so it is used as a support for double-sided adhesive sheet. You may not be able to do it.
【００１４】本発明において上記シ─ト状基材の両面に
設けられる粘着剤は、通常使用されているものであれ
ば、特に限定されず、例えばアクリル系、天然ゴム系、
合成ゴム系等いずれも使用することができる。粘着剤の
厚さは、接着性、加工性の点から、好ましくは５〜３０
０μｍ、さらに好ましくは、２０〜１８０μｍである。
粘着剤には、必要に応じて、架橋剤、粘着付与剤、老化
防止剤、安定剤、充填剤、顔料などの公知の添加剤が配
合されていてもかまわない。In the present invention, the pressure-sensitive adhesive provided on both sides of the sheet-like base material is not particularly limited as long as it is commonly used, and for example, acrylic type, natural rubber type,
Any synthetic rubber type can be used. The thickness of the pressure-sensitive adhesive is preferably 5 to 30 from the viewpoint of adhesiveness and workability.
It is 0 μm, and more preferably 20 to 180 μm.
The adhesive may be blended with known additives such as a crosslinking agent, a tackifier, an antiaging agent, a stabilizer, a filler and a pigment, if necessary.
【００１５】本発明に用いられるシリコ─ン系剥離ライ
ナは、粘着剤層の表面を保護し、かつ、その粘着面を露
出させる際には剥離可能な構造を有するものであれば、
特に限定されず、従来から用いられてきたものが使用さ
れる。剥離ライナの基材としては、上質紙、クラフト
紙、グラシン紙などの紙を使用したもの、又は、これら
の紙の片面又は両面にポリエチレン等の高分子材料をラ
ミネ─ト加工したもの、さらには、ポリエチレンテレフ
タレ─ト（ＰＥＴ）、ポリエチレン（ＰＥ）などのプラ
スチックフィルムを使用することができる。剥離ライナ
の基材の厚さは、剥離ライナを剥がすときの作業性が困
難なものでなければ特に限定されないが、好ましくは、
１５μｍ以上、さらに好ましくは、２５〜５００μｍで
ある。剥離ライナは、基材の片面に剥離処理をしたタイ
プ、または、両面に剥離処理をしたタイプのいずれも使
用することができる。The silicone-based release liner used in the present invention has a structure that protects the surface of the pressure-sensitive adhesive layer and has a peelable structure when the pressure-sensitive adhesive surface is exposed.
There is no particular limitation, and a conventionally used one is used. As the base material of the release liner, one using high-quality paper, kraft paper, glassine paper, or the like, or one obtained by laminating a polymer material such as polyethylene on one or both sides, and further A plastic film such as polyethylene terephthalate (PET) or polyethylene (PE) can be used. The thickness of the base material of the release liner is not particularly limited unless workability when peeling the release liner is difficult, but preferably,
It is 15 μm or more, more preferably 25 to 500 μm. As the release liner, either a type in which one side of the base material is subjected to a release treatment or a type in which both sides are subjected to a release treatment can be used.
【００１６】剥離ライナに使用するシリコ─ン系剥離剤
は、剥離ライナの基材に対しては高い接着性を示し、粘
着層に対しては低接着性で汚染のないものであればよ
く、一般に知られているシリコ─ン系剥離剤を用いて剥
離性を付与する処理を施すものでよい。なかでも熱硬化
付加反応型のビニル変成ジメチルポリシロキサンを主成
分とするものに、重剥離コントロ─ル剤として、ＳｉＯ
2 単位と（ＣＨ3 ）3 ＳｉＯ1/2 単位、あるいはＣＨ2
＝ＣＨ（ＣＨ3 ）2 ＳｉＯ1/2 単位を有するレジン構造
のものが添加された硬化性シリコ─ンポリマ─を使用し
た場合に本発明の効果が大きい。剥離用シリコ─ン処理
剤としては、溶剤タイプや無溶剤タイプ、エマルジョン
タイプなどいずれも使用することができる。このような
シリコ─ン処理剤としては、ＫＳ−７７５、ＫＳ−７１
８、ＫＮＳ−３１０（信越化学工業株式会社製）、ＳＤ
７２３６、ＳＤ７２３７、ＳＤ７３２０、ＳＰ７２６８
Ｓ、ＳＰ７２６５Ｓ（東レ・ダウコ─ニング・シリコ─
ン株式会社製）等、一般に市販されているものを使用す
ることができる。剥離ライナに処理するシリコ─ン剥離
剤の厚さは従来に準じることができ、剥離性の点から、
好ましくは０．０１〜５μｍ、さらに好ましくは０．０
３〜３μｍがよい。The silicone-based release agent used in the release liner may be any agent that exhibits high adhesiveness to the base material of the release liner and low adhesiveness to the adhesive layer and does not cause contamination. A treatment for imparting releasability may be performed using a generally known silicone-based release agent. Among them, thermosetting addition reaction type vinyl-modified dimethylpolysiloxane as a main component is used as a heavy release control agent with SiO 2.
2 units and (CH 3 ) 3 SiO 1/2 units, or CH 2
The effect of the present invention is great when a curable silicone polymer added with a resin structure having ═CH (CH 3 ) 2 SiO 1/2 units. As the silicone treating agent for peeling, any of solvent type, solventless type, emulsion type and the like can be used. Such silicone treating agents include KS-775 and KS-71.
8, KNS-310 (Shin-Etsu Chemical Co., Ltd.), SD
7236, SD7237, SD7320, SP7268
S, SP7265S (Toray Dowko-Ning Silicone-
Commercially available products, etc., can be used. The thickness of the silicone release agent applied to the release liner can be the same as the conventional thickness.
It is preferably 0.01 to 5 μm, more preferably 0.0.
3 to 3 μm is preferable.
【００１７】両面粘着シ─トの製造方法は、公知の方法
を用いてもよく特に限定されないが、例えば溶剤系粘着
剤を、酸を付着させたシ─ト状基材に直接塗布して製造
する方法や、剥離ライナに粘着剤を塗布、乾燥させて酸
を付着させたシ─ト状基材に貼合わせる方法等が例示さ
れる。The method for producing the double-sided adhesive sheet may be any known method and is not particularly limited. For example, a solvent-based adhesive agent is directly applied to a sheet-like substrate to which an acid is attached to produce the double-sided adhesive sheet. And a method of applying a pressure-sensitive adhesive to a release liner, drying it, and laminating it on a sheet-like substrate having an acid attached thereto.
【００１８】つぎに本発明の両面粘着シ─トを実施例に
もとづきさらに詳しく説明するが、本発明はこれらに限
定されるものではない。 実施例１ マニラ麻パルプからなる坪量１４ｇ／ｍ2 、厚さ４５μ
ｍの不織布に、マイヤ─バ─でクエン酸水溶液を塗布
し、乾燥させてクエン酸を１．０ｇ／ｍ2 付着させたシ
─ト状基材を作製した。剥離ライナとして、坪量１００
ｇ／ｍ2 の両面ポリエチレンラミネ─ト上質紙の片面
に、熱硬化付加反応型シリコ─ン（信越化学工業株式会
社製ＫＳ−７７５／ＫＳ−７１８）を塗布し、１１０℃
で１分間乾燥させてシリコ─ン塗布量１ｇ／ｍ2 の剥離
ライナを作製した。シリコ─ン系剥離ライナのシリコ─
ン処理面にアクリル系粘着剤を直接塗布し乾燥させて厚
さ７０μｍのアクリル系粘着剤層を形成し、粘着剤層
に、先に作製しておいたシ─ト状基材を貼合わせた。同
様にして、シリコ─ン系剥離ライナに粘着剤を塗布した
ものを作製し、片面に剥離ライナ付き粘着剤層を貼り合
わせたシ─ト状基材の反対面に貼合わせて両面粘着シ─
トを作製した。ここで、アクリル系粘着剤は、アクリル
酸ブチル１００部、アクリル酸７部、過酸化ベンゾイル
０．４部、酢酸エチル２３０部を三ツ口フラスコに投入
し、窒素置換しながら６５〜７０℃の温度下で２０時間
重合したポリマ─に、トリメチロ─ルプロパン─トリス
─トリレンジイソシアネ─ト２部と、軟化点１００℃の
ロジンエステル系タッキファイヤ─を３０部加えること
により調製した。Next, the double-sided pressure-sensitive adhesive sheet of the present invention will be described in more detail based on examples, but the present invention is not limited thereto. Example 1 Basis weight 14 g / m 2 made of Manila hemp pulp, thickness 45 μ
An aqueous citric acid solution was applied to a non-woven fabric of m by means of a mier bar and dried to prepare a sheet-like base material to which citric acid of 1.0 g / m 2 was attached. As a release liner, basis weight 100
A thermosetting addition reaction type silicone (KS-775 / KS-718 manufactured by Shin-Etsu Chemical Co., Ltd.) was applied to one side of a double-sided polyethylene laminated high-quality paper of g / m 2 at 110 ° C.
And dried for 1 minute to prepare a release liner having a silicone coating amount of 1 g / m 2 . Silicon-based release liner silicone
The acrylic adhesive was directly applied to the treated surface and dried to form an acrylic adhesive layer having a thickness of 70 μm, and the sheet-like base material prepared previously was attached to the adhesive layer. . Similarly, a silicone release liner coated with an adhesive was prepared, and the adhesive layer with the release liner was attached to one side of the sheet-like base material.
Was made. Here, as the acrylic pressure-sensitive adhesive, 100 parts of butyl acrylate, 7 parts of acrylic acid, 0.4 part of benzoyl peroxide, and 230 parts of ethyl acetate were charged into a three-necked flask, and the temperature was adjusted to 65 to 70 ° C. while substituting with nitrogen. It was prepared by adding 2 parts of trimethylolpropane-tris-tolylene diisocyanate and 30 parts of a rosin ester tackifier having a softening point of 100 ° C. to a polymer polymerized for 20 hours.
【００１９】実施例２ 不織布に付着させる酸をリンゴ酸（付着量１ｇ／ｍ2 ）
に換えた以外は、実施例１と同様にして両面粘着シ─ト
を得た。Example 2 Malic acid (adhesion amount: 1 g / m 2 ) was used as the acid attached to the nonwoven fabric.
A double-sided adhesive sheet was obtained in the same manner as in Example 1 except that
【００２０】実施例３ 不織布に付着させる酸をリン酸（付着量１ｇ／ｍ2 ）に
換えた以外は、実施例１と同様にして両面粘着シ─トを
得た。Example 3 A double-sided pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that phosphoric acid (adhesion amount: 1 g / m 2 ) was used as the acid attached to the nonwoven fabric.
【００２１】実施例４ シ─ト状基材である不織布をレ─ヨン繊維からなる坪量
１４ｇ／ｍ2 、厚さ４０μｍの不織布に換えた以外は、
実施例１と同様にして両面粘着シ─トを得た。Example 4 A non-woven fabric as a sheet-shaped substrate was changed to a non-woven fabric made of rayon fiber and having a basis weight of 14 g / m 2 and a thickness of 40 μm.
A double-sided adhesive sheet was obtained in the same manner as in Example 1.
【００２２】実施例５ シ─ト状基材である不織布をレ─ヨン繊維からなる坪量
１４ｇ／ｍ2 、厚さ４０μｍの不織布に換えた以外は、
実施例２と同様にして両面粘着シ─トを得た。Example 5 A non-woven fabric as a sheet-shaped substrate was replaced with a non-woven fabric made of rayon fiber and having a basis weight of 14 g / m 2 and a thickness of 40 μm.
A double-sided adhesive sheet was obtained in the same manner as in Example 2.
【００２３】実施例６ シ─ト状基材である不織布をレ─ヨン繊維からなる坪量
１４ｇ／ｍ2 、厚さ４０μｍの不織布に換えた以外は、
実施例３と同様にして両面粘着シ─トを得た。Example 6 A non-woven fabric as a sheet-shaped substrate was replaced with a non-woven fabric made of rayon fiber and having a basis weight of 14 g / m 2 and a thickness of 40 μm.
A double-sided adhesive sheet was obtained in the same manner as in Example 3.
【００２４】実施例７ シ─ト状基材である不織布をポリエステル繊維からなる
坪量１８ｇ／ｍ2 、厚さ７０μｍの不織布に換えた以外
は、実施例１と同様にして両面粘着シ─トを得た。Example 7 A double-sided pressure-sensitive adhesive sheet was prepared in the same manner as in Example 1 except that the sheet-shaped non-woven fabric was replaced with a non-woven fabric made of polyester fiber and having a basis weight of 18 g / m 2 and a thickness of 70 μm. Got
【００２５】実施例８ シ─ト状基材である不織布をポリエステル繊維からなる
坪量１８ｇ／ｍ2 、厚さ７０μｍの不織布に換えた以外
は、実施例２と同様にして両面粘着シ─トを得た。Example 8 A double-sided adhesive sheet was prepared in the same manner as in Example 2 except that the sheet-like non-woven fabric was replaced with a non-woven fabric of polyester fiber having a basis weight of 18 g / m 2 and a thickness of 70 μm. Got
【００２６】実施例９ シ─ト状基材である不織布をポリエステル繊維からなる
坪量１８ｇ／ｍ2 、厚さ７０μｍの不織布に換えた以外
は、実施例３と同様にして両面粘着シ─トを得た。Example 9 A double-sided adhesive sheet was prepared in the same manner as in Example 3 except that the non-woven fabric as the sheet-like base material was changed to a non-woven fabric made of polyester fiber and having a basis weight of 18 g / m 2 and a thickness of 70 μm. Got
【００２７】実施例１０ シ─ト状基材である不織布をビニロン繊維からなる坪量
３０ｇ／ｍ2 、厚さ６０μｍの不織布に換えた以外は、
実施例１と同様にして両面粘着シ─トを得た。Example 10 Except that the sheet-like non-woven fabric was changed to a non-woven fabric made of vinylon fiber having a basis weight of 30 g / m 2 and a thickness of 60 μm.
A double-sided adhesive sheet was obtained in the same manner as in Example 1.
【００２８】実施例１１ シ─ト状基材である不織布をビニロン繊維からなる坪量
３０ｇ／ｍ2 、厚さ６０μｍの不織布に換えた以外は、
実施例２と同様にして両面粘着シ─トを得た。Example 11 A non-woven fabric as a sheet-shaped substrate was replaced with a non-woven fabric made of vinylon fibers having a basis weight of 30 g / m 2 and a thickness of 60 μm.
A double-sided adhesive sheet was obtained in the same manner as in Example 2.
【００２９】実施例１２ シ─ト状基材である不織布をビニロン繊維からなる坪量
３０ｇ／ｍ2 、厚さ６０μｍの不織布に換えた以外は、
実施例３と同様にして両面粘着シ─トを得た。Example 12 Except that the sheet-like non-woven fabric was replaced with a non-woven fabric made of vinylon fiber having a basis weight of 30 g / m 2 and a thickness of 60 μm.
A double-sided adhesive sheet was obtained in the same manner as in Example 3.
【００３０】比較例１ 実施例１で使用した、マニラ麻パルプからなる坪量１４
ｇ／ｍ2 、厚さ４５μｍの不織布（酸付着なし）の両面
に、実施例１と同様の方法にて厚さ７０μｍのアクリル
系粘着剤層を形成して両面粘着シ─トを作製した。Comparative Example 1 The basis weight of Manila hemp pulp used in Example 1 was 14
A double-sided pressure-sensitive adhesive sheet was prepared by forming an acrylic pressure-sensitive adhesive layer having a thickness of 70 μm on both surfaces of a non-woven fabric (g / m 2) having a thickness of 45 μm (no acid adhesion) in the same manner as in Example 1.
【００３１】比較例２ シ─ト状基材である不織布をレ─ヨン繊維からなる坪量
１４ｇ／ｍ2 、厚さ４０μｍの不織布に換えた以外は、
比較例１と同様にして両面粘着シ─トを得た。Comparative Example 2 A non-woven fabric as a sheet-shaped substrate was replaced with a non-woven fabric made of rayon fiber and having a basis weight of 14 g / m 2 and a thickness of 40 μm.
A double-sided adhesive sheet was obtained in the same manner as in Comparative Example 1.
【００３２】比較例３ シ─ト状基材である不織布をポエステル繊維からなる坪
量１８ｇ／ｍ2 、厚さ７０μｍの不織布に換えた以外
は、比較例１と同様にして両面粘着シ─トを得た。Comparative Example 3 A double-sided adhesive sheet was prepared in the same manner as in Comparative Example 1 except that the non-woven fabric as the sheet-like substrate was replaced with a non-woven fabric made of polyester fiber having a basis weight of 18 g / m 2 and a thickness of 70 μm. Got
【００３３】比較例４ シ─ト状基材である不織布をビニロン繊維からなる坪量
３０ｇ／ｍ2 、厚さ６０μｍの不織布に換えた以外は、
比較例１と同様にして両面粘着シ─トを得た。Comparative Example 4 A non-woven fabric as a sheet-shaped substrate was replaced with a non-woven fabric made of vinylon fibers having a basis weight of 30 g / m 2 and a thickness of 60 μm.
A double-sided adhesive sheet was obtained in the same manner as in Comparative Example 1.
【００３４】評価試験 実施例、比較例で得た両面粘着シ─トについて下記の特
性を調べた。Evaluation Test The following characteristics of the double-sided adhesive sheets obtained in Examples and Comparative Examples were examined.
【００３５】剥離ライナの剥離力上昇性 実施例、比較例で得た両面粘着シ─トの、一方の面の粘
着剤層を被覆している剥離ライナを剥がして、ＥＰＤＭ
ゴム発泡体（日東電工株式会社製、商品名エプトシ─ラ
─）、ブチルゴム発泡体、クロロプレンゴムにそれぞれ
貼合わせ、貼合わせた状態で室温下で１日放置した初期
サンプルと、ゴム発泡体等に貼合わせたサンプルを６５
℃×９５％ＲＨの加温、加湿条件下に５日間投入した促
進後の剥離力を測定した。剥離力の測定は、引っ張り試
験機を使用して、剥離ライナを、引っ張り速度３００ｍ
／分で剥がして測定した。測定結果を、表１に示した。Elevation of peeling force of release liner The release liner covering the pressure-sensitive adhesive layer on one side of the double-sided adhesive sheets obtained in Examples and Comparative Examples was peeled off to obtain EPDM.
Rubber foam (manufactured by Nitto Denko Corporation, trade name Eptoshira), butyl rubber foam, and chloroprene rubber were laminated to each other, and the initial sample left for 1 day at room temperature in the laminated state and rubber foam, etc. 65 samples pasted together
The peeling force after acceleration, which was applied for 5 days under the conditions of heating and humidification at ℃ × 95% RH, was measured. The peeling force was measured by using a tensile tester to measure the peeling liner at a pulling speed of 300 m.
It was peeled off at / min and measured. The measurement results are shown in Table 1.
【００３６】[0036]
【表１】 [Table 1]
【００３７】[0037]
【発明の効果】本発明の両面粘着シ─トは、支持体であ
るシ─ト状基材に酸を付着させてあるので、被着体とし
て、天然ゴム、クロロプレンゴム、ＥＰＤＭゴム、ブチ
ルゴム等のゴムシ─ト又は、これらの発泡体に貼合わせ
られた状態で長期間保存されても剥離ライナの剥離力上
昇を小さくすることができる。従って、施工時まで安定
した剥離力を維持することができる共に、剥離ライナが
剥がせなくなるというトラブルも発生せず、品質の安定
した両面粘着シ─トを得ることができる。The double-sided pressure-sensitive adhesive sheet of the present invention has an acid adhered to a sheet-like base material which is a support, so that as an adherend, natural rubber, chloroprene rubber, EPDM rubber, butyl rubber, etc. It is possible to reduce the increase in the peeling force of the release liner even if the rubber sheet or the foamed product is stored for a long period of time in a state of being stuck to the foamed product. Therefore, a stable peeling force can be maintained until the time of construction, and a trouble that the release liner cannot be peeled off does not occur, and a double-sided adhesive sheet with stable quality can be obtained.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の両面粘着シ─トの実例を示す断面図で
ある。FIG. 1 is a sectional view showing an example of a double-sided adhesive sheet of the present invention.
【図２】本発明の両面粘着シ─トをゴムに貼合わせたと
きの断面図である。FIG. 2 is a cross-sectional view when the double-sided adhesive sheet of the present invention is attached to rubber.
１ 剥離ライナ基材 ２ シリコ─ン系剥離剤層 ３ 粘着剤層 ４ 酸付着シ─ト状基材 ５ ゴム 1 Release Liner Base Material 2 Silicone Release Agent Layer 3 Adhesive Layer 4 Acid Adhesive Sheet-like Base Material 5 Rubber
Claims (2)
れた両面粘着シ─トにおいて、シ─ト状基材に酸が付着
されるとともに、粘着剤層がシリコ─ン系剥離ライナで
被覆されてなることを特徴とする両面粘着シ─ト。1. A double-sided pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer provided on both sides of a sheet-shaped base material, wherein an acid is attached to the sheet-shaped base material, and the pressure-sensitive adhesive layer is a silicone-based material. A double-sided adhesive sheet characterized by being coated with a release liner.
有機酸及び／又は無機酸からなる酸が付着されてなるこ
とを特徴とする請求項１記載の両面粘着シ─ト。2. The double-sided pressure-sensitive adhesive sheet according to claim 1, wherein a sheet-like base material made of a non-woven fabric is adhered with an acid made of an aliphatic organic acid and / or an inorganic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9664895A JPH08291274A (en) | 1995-04-21 | 1995-04-21 | Double coated adhesive sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9664895A JPH08291274A (en) | 1995-04-21 | 1995-04-21 | Double coated adhesive sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08291274A true JPH08291274A (en) | 1996-11-05 |
Family
ID=14170654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9664895A Pending JPH08291274A (en) | 1995-04-21 | 1995-04-21 | Double coated adhesive sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08291274A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001030931A1 (en) * | 1999-10-29 | 2001-05-03 | Rhodia Chimie | Anti-adherent silicone/adhesive complex with stabilising additive |
| JP2002285114A (en) * | 2001-03-26 | 2002-10-03 | Sekisui Chem Co Ltd | Tape for abrasive fixing |
| JP2007099938A (en) * | 2005-10-05 | 2007-04-19 | Nitto Denko Corp | Release-treatment agent, release liner and adhesive tape or sheet |
| US20120009399A1 (en) * | 2010-07-12 | 2012-01-12 | Nitto Denko Corporation | Double-sided pressure-sensitive adhesive sheet for fixing flexible printed circuit board and method for manufacturing the same |
| JP2015063617A (en) * | 2013-09-25 | 2015-04-09 | Dic株式会社 | Adhesive tape and laminated adhesive tape |
-
1995
- 1995-04-21 JP JP9664895A patent/JPH08291274A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001030931A1 (en) * | 1999-10-29 | 2001-05-03 | Rhodia Chimie | Anti-adherent silicone/adhesive complex with stabilising additive |
| FR2800382A1 (en) * | 1999-10-29 | 2001-05-04 | Rhodia Chimie Sa | SILICONE COMPLEX / ADHESIVE ANTI-ADHERENT WITH STABILIZATION ADDITIVE |
| JP2002285114A (en) * | 2001-03-26 | 2002-10-03 | Sekisui Chem Co Ltd | Tape for abrasive fixing |
| JP2007099938A (en) * | 2005-10-05 | 2007-04-19 | Nitto Denko Corp | Release-treatment agent, release liner and adhesive tape or sheet |
| US20120009399A1 (en) * | 2010-07-12 | 2012-01-12 | Nitto Denko Corporation | Double-sided pressure-sensitive adhesive sheet for fixing flexible printed circuit board and method for manufacturing the same |
| JP2015063617A (en) * | 2013-09-25 | 2015-04-09 | Dic株式会社 | Adhesive tape and laminated adhesive tape |
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