JPH0711211A - Pressure-sensitive adhesive composition - Google Patents
Pressure-sensitive adhesive compositionInfo
- Publication number
- JPH0711211A JPH0711211A JP5153793A JP15379393A JPH0711211A JP H0711211 A JPH0711211 A JP H0711211A JP 5153793 A JP5153793 A JP 5153793A JP 15379393 A JP15379393 A JP 15379393A JP H0711211 A JPH0711211 A JP H0711211A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- sensitive adhesive
- adhesive
- cross
- adhesive composition
- 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)
- Adhesives Or Adhesive Processes (AREA)
Abstract
(57)【要約】
【目的】 粘着テープの粘着剤に用いて好適な感圧性粘
着剤組成物に関するものであり、基材への含浸性、転写
性に優れ、しかも凝集力に優れた塗膜を形成し得るもの
を提供する。
【構成】 アミン化合物やアジリジン化合物のように、
反応性に富む架橋剤が内包され、所定の圧力により破壊
される皮膜からなるマイクロカプセルが、この架橋剤と
架橋反応を起こす粘着剤の溶液中に分散されている粘着
剤組成物である。このような粘着剤組成物は、架橋反応
の必要な時点で適宜カプセルを破壊すれば、その時点か
ら架橋反応が速やかに開始する。従って、粘着テープの
製造工程で、粘着剤の溶剤の乾燥段階から転写段階に至
るまでは架橋反応を抑えて必要な粘度を維持し、転写後
に速やかに架橋させることが可能となり、架橋の為に粘
度が上昇して転写ミスを起こすことがない。(57) [Abstract] [Purpose] The present invention relates to a pressure-sensitive adhesive composition suitable for use as an adhesive for an adhesive tape, and has excellent impregnating property on a substrate, transferability, and excellent cohesive force. What can form is provided. [Structure] Like amine compounds and aziridine compounds,
This is a pressure-sensitive adhesive composition in which microcapsules containing a highly reactive cross-linking agent and formed by a film that is destroyed by a predetermined pressure are dispersed in a solution of a pressure-sensitive adhesive that causes a cross-linking reaction with the cross-linking agent. In such a pressure-sensitive adhesive composition, if the capsule is appropriately broken at the time when the crosslinking reaction is necessary, the crosslinking reaction starts immediately from that time. Therefore, in the adhesive tape manufacturing process, it is possible to suppress the crosslinking reaction from the drying step of the solvent of the adhesive to the transfer step to maintain the required viscosity, and to rapidly crosslink after transfer. The viscosity does not increase and transfer errors do not occur.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、包装用、工業用及び医
療用等の各産業分野に用いられる粘着テープの粘着剤に
用いて好適な感圧性粘着剤組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive composition suitable for use as an adhesive for an adhesive tape used in various industrial fields such as packaging, industrial use and medical use.
【０００２】[0002]
【従来の技術】従来、粘着テープといわれるものは、常
温下で粘着性を持つ粘着剤が、テープ基材に塗布されて
感圧性粘着剤層を形成した構造のものである。この場
合、粘着剤としては天然ゴム、合成ゴム等のゴム系粘着
剤と アクリル樹脂等の合成樹脂系に分けられ、これら
の粘着剤を、紙又は布帛、或いは塩化ビニル、ポリエス
テル、ポリエチレン、ポリプロピレン等の合成樹脂を素
材としたフイルムやシートからなるテープ基材に塗工し
たもので、包装用、工業用及び医療用等の各種産業分野
に用いられている。2. Description of the Related Art Conventionally, what is called an adhesive tape has a structure in which an adhesive having adhesiveness at room temperature is applied to a tape base material to form a pressure-sensitive adhesive layer. In this case, the pressure-sensitive adhesives are divided into rubber-based pressure-sensitive adhesives such as natural rubber and synthetic rubber, and synthetic resin-based pressure-sensitive adhesives such as acrylic resin. These pressure-sensitive adhesives are used for paper or cloth, or vinyl chloride, polyester, polyethylene, polypropylene, etc. It is applied to a tape base material consisting of a film or sheet made of the above synthetic resin as a raw material, and is used in various industrial fields such as packaging, industrial use and medical use.
【０００３】そしてこれらの用途に要求される代表的な
物性としては、最も重要にして且つ単純な物性である粘
着性と、貼着物体に粘着させた後に粘着剤のテープ基材
からのはみ出しがないことと、再剥離した際に貼着物体
への糊残りが無いことである。これらの必要最小限の物
性を満足させるために、粘着剤を架橋させ、凝集力を高
める処置を採る場合がある。As typical physical properties required for these applications, the most important and simple physical property is the tackiness and the sticking out of the pressure-sensitive adhesive from the tape substrate after sticking to the adhered object. That is, there is no adhesive residue on the adhered object when it is peeled off again. In order to satisfy these minimum required physical properties, the pressure-sensitive adhesive may be crosslinked to increase cohesive strength.
【０００４】このような粘着剤を架橋型粘着剤と称する
が、これを使用する場合は、テープ基材に粘着剤を塗工
した後は、粘着剤の溶剤を乾燥して除去する必要の他
に、架橋反応を行わせる必要があるので、被架橋型の粘
着剤を用いた場合よりも長時間の加熱を必要とする。こ
の加熱時間の増大は、当然粘着テープの製造効率に影響
するばかりでなく、粘着剤の粘着性にも悪影響を及ぼす
のである。Such an adhesive is referred to as a cross-linking adhesive. When this adhesive is used, it is necessary to dry the solvent of the adhesive after the adhesive is applied to the tape substrate and to remove it. In addition, since it is necessary to carry out a crosslinking reaction, heating is required for a longer time than in the case where a crosslinkable adhesive is used. This increase in heating time naturally affects not only the production efficiency of the adhesive tape but also the adhesiveness of the adhesive.
【０００５】そこで、粘着物性の安定化や架橋時間の短
縮化の為に、架橋剤として、従来汎用されているイソシ
アネート系の架橋剤に代わって、ヘキサメチレンジアミ
ンのようなアミン化合物や、ポリエチレンイミンのよう
なアジリジン化合物の如く、反応性に富む架橋剤を用い
ることが知られている。Therefore, in order to stabilize the adhesive property and shorten the crosslinking time, an amine compound such as hexamethylenediamine or polyethyleneimine is used as a crosslinking agent in place of an isocyanate type crosslinking agent which has been widely used conventionally. It is known to use a cross-linking agent having a high reactivity such as an aziridine compound.
【０００６】これらの化合物は、その中に含まれる活性
なアミノ基等の官能基と、粘着剤中のカルボキシル基等
の官能基との反応によって架橋反応を起こすのである
が、その際の架橋反応速度が早すぎて、粘着剤の調整か
ら塗工前までの貯蔵可能な時間（以下これを「可使時
間」という）が少なくなる傾向にあり、また更に、粘着
剤の調製後数時間で塗工工程に入ってからでも、乾燥炉
中での加熱・乾燥工程で架橋反応がほぼ完結する場合が
多い。[0006] These compounds cause a cross-linking reaction by a reaction between a functional group such as an active amino group contained therein and a functional group such as a carboxyl group in the pressure-sensitive adhesive. Since the speed is too fast, the storable time from the adjustment of the adhesive to the time before coating (hereinafter referred to as "pot life") tends to decrease, and furthermore, it takes several hours after the adhesive is prepared. Even after entering the process, the crosslinking reaction is often almost completed in the heating / drying process in the drying furnace.
【０００７】一方、基材として繊維質からなる紙、又は
布帛を用いたときは、直接粘着剤を基材に塗布したので
は、一定の厚さで均一な粘着剤層を形成することが難し
いので、一旦、粘着剤を剥離紙等の担体に塗布し、この
剥離紙に仮着された粘着剤を基材と重ね合わせて押圧す
ることにより、粘着剤を基材に移し替える所謂転写方式
が採用される。On the other hand, when fibrous paper or cloth is used as the base material, it is difficult to form a uniform pressure-sensitive adhesive layer with a constant thickness by directly applying the pressure-sensitive adhesive to the base material. Therefore, there is a so-called transfer method in which an adhesive is once applied to a carrier such as release paper, and the adhesive temporarily attached to the release paper is transferred to the base material by pressing the adhesive with the base material. Adopted.
【０００８】[0008]
【本発明が解決しようとする課題】ところが、このよう
な転写方式で基材に粘着剤層を設ける場合において、ア
ミン化合物や、アジリジン化合物からなる反応性に富む
架橋剤を用いた場合は、上述の通り、架橋速度が速いの
で、加熱・乾燥後に粘着剤を基材に転写するときには、
既に架橋が殆ど行われた後であって、極端に粘度が上昇
し、基材への粘着剤の含浸・転写性に乏しくなる、即
ち、基材と粘着剤との密着性が悪くなる。その結果、テ
ープ使用時のアンカー不良や製造時の巻き取り時の空気
混入による所謂巻き姿不良（「巻き巣」）等の不具合を
生み出す原因となる。However, when a pressure-sensitive adhesive layer is provided on a substrate by such a transfer method and an amine compound or an aziridine compound, which is a highly reactive crosslinking agent, is used, As shown in the figure, the crosslinking speed is fast, so when transferring the adhesive to the substrate after heating and drying,
Even after almost all the cross-linking has already been carried out, the viscosity rises extremely and the impregnation / transferability of the pressure-sensitive adhesive to the substrate becomes poor, that is, the adhesion between the substrate and the pressure-sensitive adhesive becomes poor. As a result, defects such as a defective anchor when the tape is used and a so-called defective winding shape (“rolling nest”) due to air inclusion during winding at the time of manufacturing are caused.
【０００９】本発明は、粘着剤のテープ基材への塗工の
際に、転写方式を採る場合であって、且つ架橋速度が著
しく早い架橋剤を使用した場合に発生する、上述のよう
な従来技術の欠点を解消し、粘着テープに要求される諸
物性の安定と、架橋時間の短縮を図ることを前提としな
がらも尚且つ塗工・乾燥後であっても粘度上昇が少な
く、基材への含浸性・転写性に優れた感圧性粘着剤組成
物を提供することを目的としてなされたものである。The present invention occurs when a transfer system is used when a pressure-sensitive adhesive is applied to a tape substrate and a crosslinking agent having a remarkably high crosslinking rate is used, as described above. Although the drawbacks of the prior art are solved and various properties required for adhesive tapes are stabilized and the crosslinking time is shortened, the viscosity does not increase even after coating and drying The purpose of the present invention is to provide a pressure-sensitive adhesive composition excellent in impregnation property and transferability.
【００１０】[0010]
【課題を解決するための手段】本発明は、「反応性に富
む架橋剤を内包し、所定の圧力により破壊される皮膜か
らなるマイクロカプセルが、該架橋剤と架橋反応を起こ
す粘着剤の溶液中に分散されてなることを特徴とする感
圧性粘着剤組成物」をその要旨とするものである。According to the present invention, "a microcapsule containing a highly reactive cross-linking agent and formed by a film that is destroyed by a predetermined pressure is used as a solution of a pressure-sensitive adhesive that causes a cross-linking reaction with the cross-linking agent. "The pressure-sensitive adhesive composition is characterized by being dispersed therein".
【００１１】即ち、本発明は、反応性に富む架橋剤をマ
イクロカプセル化して粘着剤溶液中に分散させ、架橋反
応の必要な時点で、このマイクロカプセルを破壊するよ
うにして、その可使時間を長くするようにし、塗工・乾
燥後であっても粘度上昇が少なく、基材への含浸性・転
写性に支障のないようになし、更に、基材への転写後は
速やかに硬化して、所期の凝集性を発揮するようにした
ことを骨子とするものである。That is, according to the present invention, a crosslinking agent having a high reactivity is microencapsulated and dispersed in an adhesive solution, and the microcapsule is destroyed at the time when the crosslinking reaction is required so that the pot life thereof is increased. The viscosity does not increase even after coating and drying so that impregnation onto the substrate and transferability are not hindered. The main point is to achieve the desired cohesiveness.
【００１２】ところで、マイクロカプセル化の技術は古
くから公知であって、微粒化された液体や固体の物質
を、薄いプラスチックやワックス等で包み込んで小粒子
化する技術であり、微粒化された液体や固体の物質を芯
剤もしくは核と称し、これを包含するものを皮膜もしく
は壁膜と称している。粘着テープの技術分野において
も、薬剤テープやシートのように薬剤の遅効性を保持さ
せる目的で使用される場合があるが、本発明は、この技
術を反応性に富む架橋剤の反応制御に応用したものであ
る。By the way, the technique of microencapsulation has been known for a long time, and it is a technique of encapsulating a finely divided liquid or solid substance with thin plastic or wax to make it into small particles. A solid substance is called a core or core, and a substance containing this is called a film or a wall film. In the technical field of adhesive tape, it may be used for the purpose of retaining the delayed action of a drug such as a drug tape or sheet, but the present invention applies this technique to the reaction control of a crosslinker having high reactivity. It was done.
【００１３】カプセル化に際して、本発明では芯剤とし
て反応性に富む架橋剤が使用され、皮膜物質としてはポ
リエチレン等の合成樹脂が挙げられる。具体的には、芯
剤としては、前述のアミン系化合物、或いはアジリジン
系化合物が挙げられ、いずれも粘着剤中のカルボキシル
基等と反応するものを言う。そして、溶剤等のカプセル
化媒体中に架橋剤を微粒子状に分散させ、この分散液中
に皮膜物質を導入し、芯剤の周囲にこれを集合乃至沈積
してカプセル化を図るのである。At the time of encapsulation, in the present invention, a highly cross-linking agent is used as a core material, and a synthetic resin such as polyethylene can be used as a film material. Specifically, examples of the core agent include the above-mentioned amine compounds and aziridine compounds, both of which react with the carboxyl group in the adhesive. Then, the cross-linking agent is finely dispersed in an encapsulating medium such as a solvent, the coating substance is introduced into this dispersion, and the coating substance is collected or deposited around the core to achieve encapsulation.
【００１４】得られたカプセルの破壊に要する圧力は、
特に限定はないが、通常５Ｋｇ／ｃｍ2 が好ましい。The pressure required for breaking the obtained capsule is
There is no particular limitation, but usually, 5 Kg / cm 2 is preferable.
【００１５】芯剤と架橋反応を起こす粘着剤としては、
（メタまたは）アクリル酸アルキルエステルを主成分と
するアクリル系モノマーからなる重合体が代表的であっ
て、アクリル系モノマーの具体例としては、（メタまた
は）アクリル酸アルキルエステル（通常、アルキル基の
炭素数が１０以下）の単独もしくはこれと側鎖にカルボ
キシル基等の極性基を有するビニル単量体との混合物か
らなる重合体である。エステルとしては、イソオクチル
エステル、２−エチルヘキシルエステル、ｎ−プロピル
エステル、イソプロピルエステル、エチルエステル等が
好ましい。粘着剤の他の例としては、リキッドイソプレ
ンラバー（ＬＩＲ）の如きカルボキシル基を有するゴム
系粘着剤が挙げられる。As the adhesive which causes a crosslinking reaction with the core,
A polymer composed of an acrylic-based monomer containing (meth or) acrylic acid alkyl ester as a main component is typical, and specific examples of the acrylic-based monomer include (meth or) acrylic acid alkyl ester (usually of an alkyl group). It is a polymer having a carbon number of 10 or less) alone or a mixture thereof with a vinyl monomer having a polar group such as a carboxyl group in a side chain. As the ester, isooctyl ester, 2-ethylhexyl ester, n-propyl ester, isopropyl ester, ethyl ester and the like are preferable. Another example of the pressure-sensitive adhesive is a rubber-based pressure-sensitive adhesive having a carboxyl group such as liquid isoprene rubber (LIR).
【００１６】[0016]
【作用】本発明の感圧性粘着剤組成物は、反応性に富む
架橋剤を芯剤として内包し、所定の圧力により破壊され
る皮膜からなるマイクロカプセルが、該架橋剤と架橋反
応を起こす粘着剤の溶液中に分散されてなるので、架橋
反応の必要な時点で、このマイクロカプセルを、例えば
テープ基材に粘着剤を塗布する段階において、該塗布手
段として加えられる押圧力等を適宜利用して破壊すれ
ば、その時点から架橋反応が進行する。The pressure-sensitive adhesive composition of the present invention contains a highly reactive cross-linking agent as a core agent, and microcapsules composed of a film that is destroyed by a predetermined pressure cause a cross-linking reaction with the cross-linking agent. Since it is dispersed in the solution of the agent, the microcapsules are appropriately used at the time of the crosslinking reaction, for example, in the step of applying the pressure-sensitive adhesive to the tape substrate, by using the pressing force applied as the applying means. If destroyed, the crosslinking reaction will proceed from that point.
【００１７】本発明の感圧性粘着剤組成物は、例えば、
前述にように、テープ基材に対して、転写方式により架
橋型粘着剤の塗工を行う際、転写の前段階では、架橋反
応を起こさせず、本来の粘度を維持させておき、以て良
好な転写性能を発揮させると共に、転写の際の押圧力を
利用して、マイクロカプセルを破壊し、得られた粘着剤
層の凝集力をアップして、粘着テープに要求される諸物
性の安定した粘着テープを製造する場合に、その機能を
発揮する。The pressure-sensitive adhesive composition of the present invention is, for example,
As described above, when the cross-linking pressure-sensitive adhesive is applied to the tape substrate by the transfer method, the cross-linking reaction does not occur in the pre-transfer step, and the original viscosity is maintained. In addition to exhibiting good transfer performance, the pressing force at the time of transfer is used to destroy the microcapsules and increase the cohesive force of the adhesive layer obtained, thus stabilizing the various physical properties required for the adhesive tape. It exerts its function when producing adhesive tape.
【００１８】また、粘着剤組成物を多量に生産し、一次
的に貯蔵する場合、その架橋反応の進行に煩わされるこ
となく、任意の期間保存することも可能である。When the pressure-sensitive adhesive composition is produced in a large amount and temporarily stored, the pressure-sensitive adhesive composition can be stored for an arbitrary period without being bothered by the progress of the crosslinking reaction.
【００１９】[0019]
【実施例】実施例 ．架橋剤のマイクロカプセル化 アジリジン化合物であるＨＤＵ（相互薬工社性）をイソ
プロパノールの２％溶液とし、これを芯剤としてポリエ
チレンのテトラハイドロフラン（ＴＨＦ）液中に分散
し、この分散液を水中に導入後、加熱しながら拡散し、
粒径が０．５〜５μｍのマイクロカプセルを製造した。[Example] Example . Cross-linking agent microencapsulation Aziridine compound HDU (mutual medicinal properties) was used as a 2% solution of isopropanol, and this was dispersed in a tetrahydrofuran (THF) solution of polyethylene as a core agent, and this dispersion was prepared in water. After being introduced into the
Microcapsules with a particle size of 0.5-5 μm were produced.
【００２０】．粘着剤溶液の製造 （メタ）アクリル酸アルキルエステルからなる重合体を
トルエン−酢酸エチル混合溶剤に溶解して、固形分が４
０％の粘着剤溶液を製造した。 ．感圧性粘着剤組成物の調製 粘着剤溶液１００重量部に対して、マイクロカプセル４
重量部を配合し、ディゾルバーで３０分攪拌・混合して
本発明の粘着剤組成物を調製した。[0020]. Preparation of pressure-sensitive adhesive solution A polymer composed of an alkyl (meth) acrylate is dissolved in a toluene-ethyl acetate mixed solvent to give a solid content of 4
A 0% adhesive solution was prepared. ． Preparation of pressure-sensitive adhesive composition Microcapsules 4 per 100 parts by weight of adhesive solution
Parts by weight were mixed and stirred and mixed with a dissolver for 30 minutes to prepare an adhesive composition of the present invention.
【００２１】．上質紙の表面に剥離処理を施してなる
剥離シート上に、２ロールコーターを用いて上記粘着剤
組成物を５０μ厚さに塗布し、１１０℃の乾燥炉に導入
して溶剤を揮散させ、粘着剤層が仮着された粘着シート
を２枚製造した。次に、セルローズ系不織布（坪量＝１
４ｇ／ｍ2 、厚み＝４０μｍ）からなる基材シートと共
に、該基材シートをサンドイッチするように、且つ粘着
剤層が基材に重なるようにして転写ロールに送り込み、
１０ｇ／ｃｍの押圧力をかけて基材の両面に粘着剤層を
転写して両面粘着テープを得た。[0021]. On a release sheet obtained by subjecting the surface of a high-quality paper to a release treatment, the above-mentioned pressure-sensitive adhesive composition was applied in a thickness of 50 μm using a two-roll coater, and introduced into a drying oven at 110 ° C. to volatilize the solvent to produce an adhesive Two pressure-sensitive adhesive sheets to which the agent layer was temporarily attached were produced. Next, cellulosic non-woven fabric (basis weight = 1
4 g / m 2 , thickness = 40 μm) together with the base sheet, and the base sheet is sandwiched and the pressure-sensitive adhesive layer is superposed on the base, and sent to a transfer roll,
A double-sided pressure-sensitive adhesive tape was obtained by applying a pressing force of 10 g / cm to transfer the pressure-sensitive adhesive layer to both sides of the substrate.
【００２２】比較例 マイクロカプセル内に反応性に富む架橋剤を内包しなか
ったこと以外は実施例と同様にして粘着テープを得た。 Comparative Example A pressure-sensitive adhesive tape was obtained in the same manner as in Example, except that the crosslinking agent having high reactivity was not included in the microcapsules.
【００２３】上記実施例及び比較例で得られた粘着テー
プについて評価試験を行い、その結果を表１に示す。Evaluation tests were conducted on the pressure-sensitive adhesive tapes obtained in the above Examples and Comparative Examples, and the results are shown in Table 1.
【００２４】尚、各評価試験方法は次の通りである。 ．不織布に対する粘着剤の含浸量；不織布厚み、両面
テープ厚み及び転写後の両面テープ厚みをダイヤルゲー
ジで実測し、式＝（不織布厚み＋両面テープ厚み）−
（転写後の両面テープ厚み）剤層を転写したときの、粘
着テープ横断面を電子顕微鏡で観察し、粘着剤の不織布
への含浸深さを該電子顕微鏡で測定。 ．８０℃保持力；ステンレススチール板に２５×１５
０ｍｍのテープを、テープの２５×２５ｍｍの面積が接
するように貼りつけ、貼りついていない部分は粘着面を
内側にして折り重ねる。次に、テープの上からゴムロー
ルで圧着速度５ｍｍ／秒で１往復して押圧し、２０分間
経過後、試験板の一端を止め金で止め、試験用テープが
垂れ下がるようにして折り重ねた部分の端に±１０ｇ
の荷重が均一にかかるようにつるし、８０℃の温度条件
下における１５分後のズレの長さを測定。 ．ＳＰ粘着力；ステンレススチール板に幅１５ｍｍの
粘着テープを貼着し、２Ｋｇのゴムロールを１往復して
押圧し、１５分後に１８０°ピーリングしてその強度を
測定。 ．ボールタック；２０℃でＪ．Ｄｏｗ法のボールタッ
ク試験法に準じて測定。The evaluation test methods are as follows. ． The amount of the adhesive impregnated into the non-woven fabric; the thickness of the non-woven fabric, the thickness of the double-sided tape, and the thickness of the double-sided tape after transfer were measured with a dial gauge, and the formula = (nonwoven fabric thickness + double-sided tape thickness)-
(Thickness of double-sided tape after transfer) The cross section of the pressure-sensitive adhesive tape when the agent layer was transferred was observed with an electron microscope, and the impregnation depth of the pressure-sensitive adhesive into the nonwoven fabric was measured with the electron microscope. ． 80 ℃ holding power; 25 × 15 on stainless steel plate
A 0 mm tape is attached so that an area of 25 × 25 mm of the tape is in contact, and the non-adhesive portion is folded with the adhesive surface inside. Next, the tape is pressed back and forth once with a rubber roll at a pressure of 5 mm / sec, and after 20 minutes, one end of the test plate is stopped with a stopper and the test tape hangs down so that it folds over. ± 10g at the end
Hanging so that the load is uniformly applied, and the length of the shift after 15 minutes under the temperature condition of 80 ° C. is measured. ． SP adhesive strength: An adhesive tape having a width of 15 mm was adhered to a stainless steel plate, a 2 Kg rubber roll was pressed back and forth once, and after 15 minutes, 180 ° peeling was performed to measure the strength. ． Ball tack; J. Measured according to the Dow ball tack test method.
【００２５】[0025]
【表１】 [Table 1]
【００２６】表１から明らかなように、前述のマイクロ
カプセルを含む本発明の粘着剤組成物を使用したもの
は、粘着剤層の密着性に優れていることが判る。As is clear from Table 1, the adhesive composition of the present invention containing the above-mentioned microcapsules is excellent in the adhesiveness of the adhesive layer.
【００２７】[0027]
【発明の効果】本発明の感圧性粘着剤組成物は、反応性
に富む架橋剤を芯剤として内包し、所定の圧力により破
壊される皮膜からなるマイクロカプセルが、該架橋剤と
架橋反応を起こす粘着剤の溶液中に分散されてなるの
で、架橋反応の必要な時点で、このマイクロカプセル
を、例えばテープ基材に粘着剤を塗布する段階におい
て、該塗布手段として加えられる押圧力等を適宜利用し
て破壊すれば、その時点から架橋反応が進行する。従っ
て、粘着剤の可使時間が大幅に長くなり、粘着剤の保存
性、管理性が向上し、生産管理の合理化を図り得ると共
に、架橋剤の使用により必要な凝集力を備えた粘着剤の
塗膜となり、品質の向上したものが得られる。EFFECT OF THE INVENTION The pressure-sensitive adhesive composition of the present invention comprises a microcapsule containing a highly reactive cross-linking agent as a core and capable of being destroyed by a predetermined pressure to cause a cross-linking reaction with the cross-linking agent. Since it is dispersed in the solution of the pressure-sensitive adhesive, the microcapsules are appropriately applied at the time of the cross-linking reaction, for example, in the step of applying the pressure-sensitive adhesive to the tape substrate, as a pressing force applied as the coating means. If utilized and destroyed, the crosslinking reaction proceeds from that point. Therefore, the pot life of the pressure-sensitive adhesive is significantly increased, the storability and controllability of the pressure-sensitive adhesive are improved, production management can be rationalized, and the use of a cross-linking agent can improve the cohesive strength of the pressure-sensitive adhesive. It becomes a coating film, and a product with improved quality is obtained.
【００２８】また、この粘着剤を用いて転写方式により
粘着テープを製造する場合、担体上への塗工と加熱・乾
燥の段階では、溶剤の乾燥のみに止めて粘度上昇を極力
抑え、転写の段階において、当然通過する転写ロール等
の押圧力を利用して、マイクロカプセルを破壊し、その
時点で架橋反応を起こさせることが可能となり、転写の
段階で基材への含浸が充分に行われ、粘着テープにおけ
る単位面積当たりの粘着剤量が不足するような不良品が
発生することはない。When a pressure-sensitive adhesive tape is produced by a transfer method using this pressure-sensitive adhesive, only the solvent is dried at the steps of coating on a carrier and heating / drying to suppress the increase in viscosity as much as possible, and transfer In the stage, it is possible to destroy the microcapsules by using the pressing force of the transfer roll, which naturally passes, and to cause a crosslinking reaction at that time, so that the substrate is sufficiently impregnated in the stage of transfer. In addition, a defective product such as an insufficient amount of the adhesive agent per unit area in the adhesive tape does not occur.
Claims (1)
力により破壊される皮膜からなるマイクロカプセルが、
該架橋剤と架橋反応を起こす粘着剤の溶液中に分散され
てなることを特徴とする感圧性粘着剤組成物。1. A microcapsule comprising a film containing a cross-linking agent having high reactivity and being destroyed by a predetermined pressure,
A pressure-sensitive adhesive composition, wherein the pressure-sensitive adhesive composition is dispersed in a solution of an adhesive that causes a crosslinking reaction with the crosslinking agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5153793A JPH0711211A (en) | 1993-06-24 | 1993-06-24 | Pressure-sensitive adhesive composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5153793A JPH0711211A (en) | 1993-06-24 | 1993-06-24 | Pressure-sensitive adhesive composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0711211A true JPH0711211A (en) | 1995-01-13 |
Family
ID=15570260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5153793A Pending JPH0711211A (en) | 1993-06-24 | 1993-06-24 | Pressure-sensitive adhesive composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0711211A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998012415A1 (en) * | 1996-09-18 | 1998-03-26 | Halliburton Energy Services, Inc. | Blocking composition for use in subterranean formation |
| WO2003099954A3 (en) * | 2002-05-20 | 2004-03-11 | 3M Innovative Properties Co | Pressure sensitive adhesive composition, articles made therewith and method of use |
| KR100525709B1 (en) * | 1998-02-17 | 2005-12-30 | 주식회사 새 한 | Foam release adhesive and adhesive film using same |
| JP2006143776A (en) * | 2004-11-16 | 2006-06-08 | Tombow Pencil Co Ltd | Pressure sensitive transfer adhesive tape |
| JP2010513628A (en) * | 2006-12-22 | 2010-04-30 | ビーエーエスエフ ソシエタス・ヨーロピア | Microcapsules containing a compound having a carbodiimide group |
| US8148471B2 (en) | 2009-11-23 | 2012-04-03 | 3M Innovative Properties Company | Acrylic pressure-sensitive adhesives with aziridinyl-epoxy crosslinking system |
| US8420214B2 (en) | 2008-06-09 | 2013-04-16 | 3M Innovative Properties Company | Acrylic pressure-sensitive adhesives with aziridine crosslinking agents |
| US8507612B2 (en) | 2009-03-09 | 2013-08-13 | 3M Innovative Properties Company | Aziridine crosslinking agents for acrylic adhesives |
| US8524836B2 (en) | 2010-01-20 | 2013-09-03 | 3M Innovative Properties Company | Crosslinkable acrylate adhesive polymer composition |
| WO2023224073A1 (en) * | 2022-05-20 | 2023-11-23 | 富士フイルム株式会社 | Pressure bonding sheet and production method therefor |
| CN118022043A (en) * | 2024-04-11 | 2024-05-14 | 上海汇禾医疗器械有限公司 | Microcapsule, preparation method thereof, vascular adhesive and vascular adhesive device |
-
1993
- 1993-06-24 JP JP5153793A patent/JPH0711211A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998012415A1 (en) * | 1996-09-18 | 1998-03-26 | Halliburton Energy Services, Inc. | Blocking composition for use in subterranean formation |
| US6192986B1 (en) * | 1996-09-18 | 2001-02-27 | Halliburton Energy Services, Inc. | Blocking composition for use in subterranean formation |
| KR100525709B1 (en) * | 1998-02-17 | 2005-12-30 | 주식회사 새 한 | Foam release adhesive and adhesive film using same |
| WO2003099954A3 (en) * | 2002-05-20 | 2004-03-11 | 3M Innovative Properties Co | Pressure sensitive adhesive composition, articles made therewith and method of use |
| US6893718B2 (en) | 2002-05-20 | 2005-05-17 | 3M Innovative Properties Company | Pressure sensitive adhesive composition, articles made therewith and method of use |
| JP2006143776A (en) * | 2004-11-16 | 2006-06-08 | Tombow Pencil Co Ltd | Pressure sensitive transfer adhesive tape |
| JP2010513628A (en) * | 2006-12-22 | 2010-04-30 | ビーエーエスエフ ソシエタス・ヨーロピア | Microcapsules containing a compound having a carbodiimide group |
| US8420214B2 (en) | 2008-06-09 | 2013-04-16 | 3M Innovative Properties Company | Acrylic pressure-sensitive adhesives with aziridine crosslinking agents |
| US8507612B2 (en) | 2009-03-09 | 2013-08-13 | 3M Innovative Properties Company | Aziridine crosslinking agents for acrylic adhesives |
| US8148471B2 (en) | 2009-11-23 | 2012-04-03 | 3M Innovative Properties Company | Acrylic pressure-sensitive adhesives with aziridinyl-epoxy crosslinking system |
| US8524836B2 (en) | 2010-01-20 | 2013-09-03 | 3M Innovative Properties Company | Crosslinkable acrylate adhesive polymer composition |
| WO2023224073A1 (en) * | 2022-05-20 | 2023-11-23 | 富士フイルム株式会社 | Pressure bonding sheet and production method therefor |
| CN118022043A (en) * | 2024-04-11 | 2024-05-14 | 上海汇禾医疗器械有限公司 | Microcapsule, preparation method thereof, vascular adhesive and vascular adhesive device |
| CN118022043B (en) * | 2024-04-11 | 2024-07-02 | 上海汇禾医疗器械有限公司 | Microcapsule, preparation method thereof, vascular adhesive and vascular adhesive device |
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