JP2003096415A - Adhesive tape - Google Patents
Adhesive tapeInfo
- Publication number
- JP2003096415A JP2003096415A JP2001296011A JP2001296011A JP2003096415A JP 2003096415 A JP2003096415 A JP 2003096415A JP 2001296011 A JP2001296011 A JP 2001296011A JP 2001296011 A JP2001296011 A JP 2001296011A JP 2003096415 A JP2003096415 A JP 2003096415A
- Authority
- JP
- Japan
- Prior art keywords
- sensitive adhesive
- pressure
- sided
- adhesive layer
- double
- 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.)
- Granted
Links
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、様々な用途に用い
られる粘着テープにおいて、使用目的に応じた粘着力を
有する粘着剤層を二層以上の積層粘着剤層によって形成
している粘着テープに関するものである。より詳細に
は、本発明は、粘着力の異なる粘着剤層を積層すること
によって、所望の粘着特性を有する積層粘着剤層を形成
せしめた粘着テープに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive tape used for various purposes, in which a pressure-sensitive adhesive layer having a pressure-sensitive adhesive force according to a purpose of use is formed of two or more laminated pressure-sensitive adhesive layers. It is a thing. More specifically, the present invention relates to an adhesive tape having a laminated adhesive layer having desired adhesive properties formed by laminating adhesive layers having different adhesive strengths.
【０００２】[0002]
【従来の技術】従来、粘着テープは、粘着剤層の持つ接
着機能に加えて、テープ基材の持つ物理的、化学的性質
や外観などの機能を活用して、材料の固定、接合、結束
等の手段として様々な用途に使用されている。これらの
粘着テープに用いられる粘着剤には、目的とする粘着特
性を得るために、エラストマーの分子量を操作したり、
硬化剤の量を調整したり、粘着付与樹脂やオイルの量を
加減して粘着力が調整されているものが使用されてい
る。2. Description of the Related Art Conventionally, pressure-sensitive adhesive tapes have not only the adhesive function of the pressure-sensitive adhesive layer, but also the physical and chemical properties and appearance of the tape base material, which are used to fix, bond, and bind materials. It is used for various purposes. The pressure-sensitive adhesive used in these pressure-sensitive adhesive tapes may be adjusted in molecular weight of the elastomer to obtain desired pressure-sensitive adhesive properties,
The one in which the adhesive strength is adjusted by adjusting the amount of the curing agent or adjusting the amounts of the tackifying resin and the oil is used.
【０００３】また、用途にあった粘着特性（糊質）を得
るために、たとえば、アクリル系粘着剤の場合には、モ
ノマー組成の選択や併用する粘着付与樹脂の選択等によ
る粘着特性の調整が主として行われており、ゴム系の場
合には、エラストマーの種類や粘着付与樹脂の選択等に
よる粘着特性の調整が行われている。特に、養生工程が
必要な分野で使用される粘着テープの場合は、養生工程
での加熱条件下で、粘着剤層の粘着特性に変化が生じて
も、養生工程終了後に粘着テープを引き剥がすことがで
きるように、粘着剤層の粘着特性を調整することが必要
である。In order to obtain an adhesive property (paste quality) suitable for the purpose, for example, in the case of an acrylic adhesive, the adhesive property can be adjusted by selecting the monomer composition or the tackifying resin used in combination. This is mainly done, and in the case of rubber type, the adhesion property is adjusted by selecting the type of elastomer and the tackifying resin. In particular, in the case of adhesive tapes used in fields requiring a curing process, even if the adhesive properties of the adhesive layer change under heating conditions in the curing process, peel off the adhesive tape after the curing process is completed. It is necessary to adjust the adhesive property of the adhesive layer so that
【０００４】[0004]
【発明が解決しようとする課題】しかし、前記のような
粘着特性の調整操作では、強粘着、低粘着、再剥離など
の単一の機能を満たす調整は可能であるが、養生テープ
のように、貼着対象面に貼り付ける際には貼り付け位置
の修正などの接着作業が容易に行えるような特性（低タ
ック又は低粘着性）を備え、しかも、養生テープとして
の役割が求められる期間中はしっかり接着した状態を保
持でき（強粘着性）、養生工程の終了後に剥がす時には
簡単に剥離することができる特性（再剥離性）を備える
ことが求められる。更に多機能の粘着テープの場合は、
粘着テープに難燃性や導電性機能を粘着剤に付与するた
めに、難燃性フィラーや導電性粒子を大量に粘着剤中に
配合しなければならず、単層構造の粘着剤層では、粘着
剤層の粘着力を低下させることとなり、所望の粘着特性
を得ることが困難であるという問題もあった。However, in the adjusting operation of the adhesive property as described above, it is possible to make an adjustment satisfying a single function such as strong adhesiveness, low adhesiveness and re-peeling, but like the curing tape. During the period when it is required to have a characteristic (low tack or low tackiness) that makes it easy to perform the bonding work such as the correction of the bonding position when it is bonded to the surface to be bonded and the role as a curing tape is required. Is required to have a property of being firmly adhered (strong tackiness) and capable of being easily peeled off when peeled off after completion of the curing step (removability). For more multifunctional adhesive tapes,
In order to impart a flame-retardant or conductive function to the pressure-sensitive adhesive tape, the flame-retardant filler and conductive particles must be mixed in a large amount in the pressure-sensitive adhesive, in the pressure-sensitive adhesive layer of the single-layer structure, There is also a problem that the adhesive strength of the adhesive layer is reduced, and it is difficult to obtain desired adhesive properties.
【０００５】このような養生用の粘着テープにおける問
題を解決する手段として、粘着剤層中に硬化剤を封じ込
めたマイクロカプセルを配合したり、アダクト反応させ
た硬化剤を使用したりすることなども行われていたが、
架橋度のコントロールのみで制御できる粘着特性の程度
は限られており、前記のような養生用の多機能粘着テー
プに求められる粘着特性を満足させることはできない。
本発明は、多様な需要に簡単に対応できる粘着特性を備
えた粘着剤層を有する粘着テープに関する発明を提供す
ることを目的とするものである。As a means for solving the problem in such a pressure-sensitive adhesive tape for curing, it is also possible to mix microcapsules containing a curing agent in the pressure-sensitive adhesive layer, or to use an adduct-curing curing agent. It was done,
The degree of adhesive property that can be controlled only by controlling the degree of crosslinking is limited, and the adhesive property required for the multifunctional adhesive tape for curing cannot be satisfied.
It is an object of the present invention to provide an invention relating to an adhesive tape having an adhesive layer having adhesive properties capable of easily meeting various demands.
【０００６】[0006]
【課題を解決するための手段】本発明は、粘着付与樹脂
の含有量が異なる粘着剤エラストマーからなる二種以上
の粘着剤層を二層以上積層して粘着剤層を形成し、各粘
着剤層相互間において粘着付与樹脂が移動し、その結果
外側粘着剤層の粘着力が変化する現象を利用することに
より、積層粘着剤層における被着体に対面する外側粘着
剤層の粘着特性（粘着力）をその内側に配置されている
粘着剤層によって制御している形式の粘着テープに関す
る発明であり、以下の各発明を包含する。The present invention is to form a pressure-sensitive adhesive layer by laminating two or more pressure-sensitive adhesive layers of two or more kinds of pressure-sensitive adhesive elastomers having different tackifying resin contents. By utilizing the phenomenon that the tackifying resin moves between the layers and, as a result, the adhesive force of the outer pressure-sensitive adhesive layer changes, the adhesive property of the outer pressure-sensitive adhesive layer facing the adherend in the laminated pressure-sensitive adhesive layer (tackiness The present invention relates to an adhesive tape of a type in which (force) is controlled by an adhesive layer arranged inside thereof, and includes the following inventions.
【０００７】（１）基材面に、共に粘着剤エラストマー
を有している内側粘着剤層と外側粘着剤層とを積層した
積層粘着剤層を有しており、該内外側粘着剤層間には、
双方の粘着剤エラストマー中の粘着付与樹脂の含有割合
によって双方の粘着力に差が設けられていることを特徴
とする両面又は片面粘着テープ。(1) On the surface of the base material, there is a laminated adhesive layer in which an inner adhesive layer and an outer adhesive layer, both of which have an adhesive elastomer, are laminated, and between the inner and outer adhesive layers. Is
A double-sided or single-sided pressure-sensitive adhesive tape, wherein the pressure-sensitive adhesive resin has a difference in adhesive strength depending on the content ratio of the tackifying resin in the two elastomers.
【０００８】（２）前記外側粘着剤層における粘着付与
樹脂の含有割合が、前記内側粘着剤層における粘着付与
樹脂の含有割合よりも高いことを特徴とする（１）項記
載の両面又は片面粘着テープ。(2) Double-sided or single-sided adhesive according to item (1), wherein the content ratio of the tackifying resin in the outer pressure-sensitive adhesive layer is higher than the content ratio of the tackifying resin in the inner pressure-sensitive adhesive layer. tape.
【０００９】（３）前記外側粘着剤層における粘着付与
樹脂の含有割合が、前記内側粘着剤層における粘着付与
樹脂の配合割合よりも低いことを特徴とする（１）項記
載の両面又は片面粘着テープ。(3) The double-sided or single-sided adhesive according to item (1), wherein the content ratio of the tackifying resin in the outer pressure-sensitive adhesive layer is lower than the compounding ratio of the tackifying resin in the inner pressure-sensitive adhesive layer. tape.
【００１０】（４）前記内側粘着剤層が、粘着剤エラス
トマーを含有する複数の粘着剤層を積層した積層粘着剤
層であることを特徴とする（１）項〜（３）項のいずれ
か１項に記載の両面又は片面粘着テープ。(4) The inner pressure-sensitive adhesive layer is a laminated pressure-sensitive adhesive layer obtained by laminating a plurality of pressure-sensitive adhesive layers containing a pressure-sensitive adhesive elastomer, and any one of the items (1) to (3). The double-sided or single-sided adhesive tape according to item 1.
【００１１】（５）前記外側粘着剤層と前記内側粘着剤
層は異なる種類の粘着剤エラストマーを有していること
を特徴とする（１）項〜（４）項のいずれか１項に記載
の両面又は片面粘着テープ。(5) The outer pressure-sensitive adhesive layer and the inner pressure-sensitive adhesive layer have different kinds of pressure-sensitive adhesive elastomers. (1) to (4) Double-sided or single-sided adhesive tape.
【００１２】（６）前記外側粘着剤層と前記内側粘着剤
層は同一種類の粘着剤エラストマーを有していることを
特徴とする（１）項〜（４）項のいずれか１項に記載の
両面又は片面粘着テープ。(6) The outer pressure-sensitive adhesive layer and the inner pressure-sensitive adhesive layer have the same kind of pressure-sensitive adhesive elastomer, as described in any one of the items (1) to (4). Double-sided or single-sided adhesive tape.
【００１３】（７）前記粘着剤エラストマーが、アクリ
ル系、天然ゴム系及び合成ゴム系から選ばれる一種もし
くは複数種であることを特徴とする（１）項〜（６）項
のいずれか１項に記載の両面又は片面粘着テープ。(7) The pressure-sensitive adhesive elastomer is one or more selected from an acrylic type, a natural rubber type and a synthetic rubber type, and any one of the items (1) to (6). Double-sided or single-sided adhesive tape according to.
【００１４】（８）前記両面又は片面粘着テープは、貼
着状態で加熱条件に曝される用途に使用される養生用又
はマスキング用の粘着テープであることを特徴とする
（１）項〜（７）項のいずれか１項に記載の両面又は片
面粘着テープ。(8) The double-sided or single-sided pressure-sensitive adhesive tape is a curing or masking pressure-sensitive adhesive tape which is used for applications exposed to heating conditions in the adhered state. The double-sided or single-sided adhesive tape according to any one of 7).
【００１５】（９）前記両面又は片面粘着テープは、粗
面や凹凸面等貼着しにくい個所に用いられる永久接着用
の粘着テープであることを特徴とする（１）項〜（７）
項のいずれか１項に記載の両面又は片面粘着テープ。(9) The double-sided or single-sided pressure-sensitive adhesive tape is a permanent-bonding pressure-sensitive adhesive tape which is used on a portion such as a rough surface or an uneven surface where it is difficult to attach, (1) to (7)
The double-sided or single-sided adhesive tape according to any one of paragraphs.
【００１６】[0016]
【発明の実施の形態】以下、本発明を図面で説明する
と、図１は本発明による粘着剤層が二層である片面粘着
テープの断面図、図２は粘着剤層が三層である両面粘着
テープの断面図、及び図３は粘着剤層が四層の両面粘着
テープの断面図である。図４は従来の粘着剤層が単層で
ある片面粘着テープの断面図である。図中、１は基材で
あり、２は内側粘着剤層、３は外側粘着剤層、４は通常
の単層粘着剤層である。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a single-sided pressure-sensitive adhesive tape having two pressure-sensitive adhesive layers according to the present invention, and FIG. 2 is both-sides having three pressure-sensitive adhesive layers. A cross-sectional view of the pressure-sensitive adhesive tape and FIG. 3 are cross-sectional views of a double-sided pressure-sensitive adhesive tape having four pressure-sensitive adhesive layers. FIG. 4 is a cross-sectional view of a conventional single-sided adhesive tape having a single adhesive layer. In the figure, 1 is a base material, 2 is an inner pressure-sensitive adhesive layer, 3 is an outer pressure-sensitive adhesive layer, and 4 is a normal single-layer pressure-sensitive adhesive layer.
【００１７】本発明の両面又は片面粘着テープにおい
て、その粘着剤層に使用される粘着剤は、粘着付与樹脂
を含んだアクリル系粘着剤及びゴム系粘着剤から選ばれ
る少なくとも一種であり、必要に応じて各粘着剤ともオ
イル、充填剤、老化防止剤等を加えてもよい。また、目
的に応じて、難燃性フィラー、導電性粒子等を加えるこ
とができる。In the double-sided or single-sided pressure-sensitive adhesive tape of the present invention, the pressure-sensitive adhesive used in the pressure-sensitive adhesive layer is at least one selected from an acrylic pressure-sensitive adhesive containing a tackifying resin and a rubber-based pressure-sensitive adhesive, and if necessary. Depending on the pressure sensitive adhesive, oil, filler, anti-aging agent, etc. may be added. In addition, flame-retardant filler, conductive particles and the like can be added depending on the purpose.
【００１８】本発明で用いられるアクリル系粘着剤は、
アルキル基の炭素数が２〜１５の(メタ)アクリル酸エス
テルを主成分とし、必要に応じてこれらと共重合可能な
(メタ)アクリル酸、イタコン酸、マレイン酸、酢酸ビニ
ル、アクリロニトリル等のモノマーを単独又は２種類以
上を併用した公知のアクリル系粘着剤であり、特に限定
されるものではない。The acrylic adhesive used in the present invention is
Alkyl group having 2 to 15 carbon atoms (meth) acrylic acid ester as a main component, and copolymerizable with them as required
It is a known acrylic pressure-sensitive adhesive in which monomers such as (meth) acrylic acid, itaconic acid, maleic acid, vinyl acetate, and acrylonitrile are used alone or in combination of two or more, and are not particularly limited.
【００１９】上記アクリル系粘着剤は、使用に際して、
イソシアネート化合物、酸無水物、アミン化合物、エポ
キシ化合物、金属キレート類、アジリジン化合物等の架
橋剤を用いて架橋して用いることもあるが、これらの架
橋剤は使用する官能基含有モノマーの種類に適応するよ
うに選択される。The above acrylic pressure-sensitive adhesive is
It may be used by crosslinking with a crosslinking agent such as an isocyanate compound, an acid anhydride, an amine compound, an epoxy compound, a metal chelate, and an aziridine compound, but these crosslinking agents are suitable for the type of functional group-containing monomer used. To be selected.
【００２０】ゴム系粘着剤のエラストマー成分として
は、特に限定されるものではないが、例えば、天然ゴ
ム、合成イソプレンゴム、スチレンイソプレンゴム、ブ
チルゴム、ブタジエンゴム、クロロプレンゴム、スチレ
ン・イソプレンブロックコポリマー等が挙げられ、これ
らを単独又は２種類以上を併用してもよい。The elastomer component of the rubber-based pressure-sensitive adhesive is not particularly limited, but examples thereof include natural rubber, synthetic isoprene rubber, styrene isoprene rubber, butyl rubber, butadiene rubber, chloroprene rubber, and styrene-isoprene block copolymer. These may be used alone or in combination of two or more.
【００２１】上記エラストマー成分は、アクリル系粘着
剤の場合と同様、過酸化物、反応性フェノール樹脂、硫
黄、チウラム類等の硫黄化合物、マレイミド等の加硫剤
で加硫して用いてもよい。架橋或いは加硫して用いた方
が、再剥離用途や耐熱クリープ性が要求される用途に対
しては好ましいが、多用すると粘着付与樹脂の内側粘着
剤と外側粘着剤層間の移動の妨げとなる場合がある。The above-mentioned elastomer component may be vulcanized with a vulcanizing agent such as a peroxide, a reactive phenol resin, a sulfur compound such as sulfur or thiuram, or a vulcanizing agent such as maleimide, as in the case of the acrylic pressure-sensitive adhesive. . It is preferable to use it after crosslinking or vulcanization, although it is preferable for re-peeling applications and applications requiring heat-resistant creep resistance, but if used too much, it will hinder the movement of the tackifying resin between the inner pressure-sensitive adhesive layer and the outer pressure-sensitive adhesive layer. There are cases.
【００２２】本発明の両面又は片面粘着テープの粘着剤
層に用いられる粘着付与樹脂は、各層を構成するアクリ
ル系共重合体又はゴム系エラストマー１００質量部に対
して０〜３００質量部の範囲で含まれるように用いられ
る。粘着付与樹脂としては、例えば、ロジン、ロジンエ
ステル等のロジン系樹脂、テルペン樹脂、芳香族変性テ
ルペン樹脂、水添テルペン樹脂、テルペンフェノール等
のテルペン系樹脂、脂肪族系石油樹脂、芳香族系石油樹
脂、共重合系石油樹脂、脂環属系石油樹脂、クマロン・
インデン樹脂、ピュア・モノマー系樹脂等の重合系樹
脂、フェノール系樹脂、キシレン樹脂等の縮合系樹脂な
ど、特に限定されるものではなく、これらのうち１種又
は２種以上を組み合わせて使用することができる。The tackifying resin used in the pressure-sensitive adhesive layer of the double-sided or single-sided pressure-sensitive adhesive tape of the present invention is in the range of 0 to 300 parts by mass with respect to 100 parts by mass of the acrylic copolymer or rubber elastomer constituting each layer. Used to be included. Examples of the tackifying resin include rosin, rosin-based resins such as rosin esters, terpene resins, aromatic modified terpene resins, hydrogenated terpene resins, terpene-based resins such as terpene phenols, aliphatic petroleum resins, aromatic petroleum oils. Resin, copolymer petroleum resin, alicyclic petroleum resin, coumarone
Polymerization resins such as indene resins and pure monomer resins, condensation resins such as phenol resins and xylene resins are not particularly limited, and one kind or a combination of two or more kinds of them may be used. You can
【００２３】また、各粘着剤層は、同じ種類の粘着剤系
で粘着付与樹脂の量を変えたものに限らず、別の種類の
粘着剤系を用いても構わない。例えば、内側粘着剤層が
アクリル系粘着剤で外側粘着剤層がゴム系粘着剤の構成
や、内側粘着剤層が天然ゴム/ＳＢＲ＝８０/２０のエラ
ストマー比率であるのに対して、外側粘着剤層のエラス
トマーが天然ゴム/ＳＢＲ＝５０/５０の比率である場合
等が含まれる。Each pressure-sensitive adhesive layer is not limited to the same type of pressure-sensitive adhesive system in which the amount of the tackifying resin is changed, and another type of pressure-sensitive adhesive system may be used. For example, the inner pressure-sensitive adhesive layer has an acrylic pressure-sensitive adhesive and the outer pressure-sensitive adhesive layer has a rubber-based pressure-sensitive adhesive, and the inner pressure-sensitive adhesive layer has an elastomer ratio of natural rubber / SBR = 80/20, while the outer pressure-sensitive adhesive layer has an outer pressure-sensitive adhesive. The case where the elastomer of the agent layer has a ratio of natural rubber / SBR = 50/50 is included.
【００２４】上記内側粘着剤層と外側粘着剤層の厚さ
(塗布質量)は特に限定されるものではないが、外側粘着
剤層が薄く内側粘着剤層が厚いと、内側粘着剤層の粘着
特性を強く反映するし、逆に、外側粘着剤層が厚く内側
粘着剤層が薄いと、内側粘着剤層の粘着付与樹脂の外側
粘着剤層への層間移動による影響力が低下する。一般的
には、外側粘着剤層の厚さは、２〜１００μｍが好まし
く、更に好ましくは５〜５０μｍであり、内側粘着剤層
の厚さは、１０〜２００μｍ程度であり、好ましくは３
０〜６０μｍである。Thickness of the inner pressure-sensitive adhesive layer and the outer pressure-sensitive adhesive layer
(Coating mass) is not particularly limited, but when the outer adhesive layer is thin and the inner adhesive layer is thick, the adhesive properties of the inner adhesive layer are strongly reflected, and conversely, the outer adhesive layer is thick. When the inner pressure-sensitive adhesive layer is thin, the influence of the interlayer movement of the tackifying resin of the inner pressure-sensitive adhesive layer to the outer pressure-sensitive adhesive layer decreases. Generally, the thickness of the outer pressure-sensitive adhesive layer is preferably 2 to 100 μm, more preferably 5 to 50 μm, and the thickness of the inner pressure-sensitive adhesive layer is about 10 to 200 μm, preferably 3
It is 0 to 60 μm.
【００２５】本発明の両面又は片面粘着テープの当初の
粘着特性は、外側粘着剤層の配合処方に左右され、一般
にアクリル系共重合体やゴム系エラストマーに対する外
側粘着剤層の粘着付与樹脂の添加比率が大きい場合に
は、粘着力は高いが低いタック(初期接着性)を示す。逆
に外側粘着剤層の粘着付与樹脂の比率が低い場合には、
粘着力は比較的低いが高いタックを示し、被着体への初
期接着性が好ましい場合が多い。このため、マスキング
テープなど貼り付け位置の修正等の作業が必要な際に
は、外側粘着剤層の粘着付与樹脂の比率を内側粘着剤層
の粘着付与樹脂の比率より高くし、初期接着性を低くし
て、粗面、凹凸面、カーペット等貼着しにくいものを固
定する両面テープ等に用いる場合には、外側粘着剤層の
粘着付与樹脂の比率を低くして、タック(初期接着性)を
高く設定することができる。The initial adhesive properties of the double-sided or single-sided adhesive tape of the present invention depend on the formulation of the outer adhesive layer, and generally the addition of the tackifying resin of the outer adhesive layer to the acrylic copolymer or the rubber elastomer. When the ratio is large, the tackiness is high, but the tack (initial adhesion) is low. Conversely, when the ratio of the tackifying resin in the outer pressure-sensitive adhesive layer is low,
Although the adhesive strength is relatively low, it exhibits high tack, and initial adhesion to an adherend is often preferred. Therefore, when it is necessary to correct the attachment position such as masking tape, make the ratio of the tackifying resin in the outer adhesive layer higher than the ratio of the tackifying resin in the inner adhesive layer to improve the initial adhesiveness. When using it for a double-sided tape that fixes a rough surface, an uneven surface, or a carpet that is difficult to stick to, lower the ratio of the tackifying resin in the outer pressure-sensitive adhesive layer to reduce the tack (initial adhesion). Can be set higher.
【００２６】また、アクリル系共重合体やゴム系エラス
トマーに対する内側粘着剤層の粘着付与樹脂の添加比率
を、外側粘着剤層の粘着付与樹脂の添加比率より高くす
ると、加熱処理や経時変化による粘着付与樹脂の外側粘
着剤層への移動により粘着力の上昇が大きくなり、各種
両面粘着テープなどの永久接着用途に適する糊質に変化
する。逆の添加比率の場合、例えばマスキング工程など
の加熱処理や経時変化により粘着付与樹脂が内側粘着剤
層へ移動し、実質的な粘着特性を示す外側粘着剤層の粘
着力が低下して、容易に剥離できるようになる。Further, if the addition ratio of the tackifying resin of the inner pressure-sensitive adhesive layer to the acrylic copolymer or the rubber-based elastomer is made higher than the addition ratio of the tackifying resin of the outer pressure-sensitive adhesive layer, the tackiness due to heat treatment or change with time The transfer of the applied resin to the outer pressure-sensitive adhesive layer greatly increases the adhesive force, and changes to a paste quality suitable for permanent adhesive applications such as various double-sided pressure-sensitive adhesive tapes. In the case of the reverse addition ratio, for example, the tackifying resin migrates to the inner pressure-sensitive adhesive layer due to heat treatment such as a masking step or aging, and the tackiness of the outer pressure-sensitive adhesive layer exhibiting substantial pressure-sensitive properties is reduced, which is easy. You can peel it off.
【００２７】また、粘着付与樹脂の他、難燃性フィラー
や導電性粒子を粘着剤に混合する際には、内側粘着剤に
多量に混合し、外側粘着剤に少量混合するか或いは混合
せずに塗布すると、高い難燃性や導電性と高い粘着力を
併せ持つ粘着テープを作ることができる。この場合、内
側粘着剤の塗布量を多くして、外側粘着剤の塗布量を少
なくすると、難燃性や導電性を更に高めることができ、
内側粘着剤層と外側粘着剤層の粘着付与樹脂量の比率を
調整することにより、粘着特性の制御をも同時に行うこ
とができる。In addition to the tackifying resin, when flame-retardant fillers or conductive particles are mixed with the pressure-sensitive adhesive, a large amount is mixed with the inner pressure-sensitive adhesive and a small amount is mixed with the outer pressure-sensitive adhesive or not mixed. When applied to, an adhesive tape having both high flame retardancy and conductivity and high adhesive strength can be produced. In this case, if the coating amount of the inner pressure-sensitive adhesive is increased and the coating amount of the outer pressure-sensitive adhesive is reduced, flame retardancy and conductivity can be further increased,
By controlling the ratio of the tackifying resin amounts of the inner pressure-sensitive adhesive layer and the outer pressure-sensitive adhesive layer, it is possible to control the pressure-sensitive adhesive properties at the same time.
【００２８】本発明の片面又は両面粘着テープに使用す
る基材としては、ポリエステル、ポリイミド、ポリプロ
ピレン、ポリエチレン等のフィルム又はこれらの発泡
体、スフ、綿、ガラス、ポリエステル、ポリエチレン、
ポリプロピレン等のクロス基材、クレープ紙、和紙、ク
ラフト紙等の紙基材、アルミニウム、銅、鉛、ステンレ
ス等の金属箔、レーヨン、ポリエステル、ポリアミド等
の不織布基材等の公知の基材であり、これらの単独又は
複合体を用いることができる。この基材の厚さは特に限
定されるものではないが、薄すぎるとその用途に適した
強度を付与することが困難となる可能性があり、厚すぎ
るとテープとしての柔軟性が失われるため、各基材とも
通常２〜３００μｍ程度であるが、好ましくは１０〜１
８０μｍ程度が一般的である。The substrate used for the single-sided or double-sided adhesive tape of the present invention includes films of polyester, polyimide, polypropylene, polyethylene and the like or foams thereof, soot, cotton, glass, polyester, polyethylene,
Known base materials such as cloth base materials such as polypropylene, paper base materials such as crepe paper, Japanese paper, kraft paper, metal foils such as aluminum, copper, lead and stainless steel, non-woven fabric base materials such as rayon, polyester and polyamide. , These can be used alone or as a complex. The thickness of this base material is not particularly limited, but if it is too thin, it may be difficult to give strength suitable for the application, and if it is too thick, the flexibility as a tape is lost. , Each substrate is usually about 2 to 300 μm, preferably 10 to 1
It is generally about 80 μm.
【００２９】本発明の片面又は両面粘着テープに用いる
ゴム系粘着剤の作製方法は、特に限定されるものではな
いが、例えば、適度の可塑度に素練りした天然ゴムや合
成ゴム、又は必要に応じて無機充填剤等を混練した混合
物をトルエンなどの溶剤に溶解して粘着付与樹脂を加
え、必要に応じて加硫剤、無機充填剤、難燃性フィラ
ー、導電性粒子、老化防止剤、軟化剤等を加えて攪拌
し、これらを溶解、分散して作製する。The method for producing the rubber-based pressure-sensitive adhesive used for the single-sided or double-sided pressure-sensitive adhesive tape of the present invention is not particularly limited, but for example, natural rubber or synthetic rubber masticated to an appropriate degree of plasticity, or if necessary. If necessary, the mixture obtained by kneading the inorganic filler or the like is dissolved in a solvent such as toluene and the tackifying resin is added, and if necessary, a vulcanizing agent, an inorganic filler, a flame retardant filler, conductive particles, an antioxidant, A softening agent or the like is added and stirred, and these are dissolved and dispersed to prepare.
【００３０】本発明に用いるアクリル系粘着剤は、前記
モノマーとＡＩＢＮ等の重合開始剤を酢酸エチル等の溶
剤に溶解し、窒素雰囲気下、適温で数時間反応させて得
られる公知のアクリル系粘着剤に粘着付与樹脂を加え、
必要に応じて架橋剤、無機充填剤、難燃性フィラー、導
電性粒子、老化防止剤、軟化剤等を加え攪拌して作製す
る。The acrylic pressure-sensitive adhesive used in the present invention is a known acrylic pressure-sensitive adhesive obtained by dissolving the above-mentioned monomer and a polymerization initiator such as AIBN in a solvent such as ethyl acetate and reacting them at a suitable temperature for several hours under a nitrogen atmosphere. Add tackifying resin to the agent,
If necessary, a crosslinking agent, an inorganic filler, a flame-retardant filler, conductive particles, an antiaging agent, a softening agent, etc. are added and stirred to prepare.
【００３１】本発明の片面粘着テープの作製方法として
は、いかなる方法が採用されても構わないが、例えば、
上記方法で作製したゴム系又はアクリル系粘着剤をロー
ルコーターやリバースコーター等で、前記の基材に所定
量塗布、乾燥して内側粘着剤塗工済みテープを作製し、
この内側粘着剤塗工面の上から同様の方法で外側粘着剤
を塗布、乾燥して巻き取るのみで目的の粘着テープを得
ることができる。また、必要に応じて、内側粘着剤を塗
工する前に背面離型処理を行ったり、内側粘着剤が塗布
される面に易接着処理を行うと、巻戻し性や耐糊残性が
改善される。Any method may be adopted as a method for producing the single-sided adhesive tape of the present invention.
Using a roll coater, a reverse coater, or the like, a rubber-based or acrylic pressure-sensitive adhesive produced by the above method, a predetermined amount is applied to the base material and dried to produce an inner pressure-sensitive adhesive coated tape,
The desired adhesive tape can be obtained only by applying the outer adhesive from the surface coated with the inner adhesive in the same manner, drying and winding. In addition, if necessary, perform back mold release treatment before applying the inner adhesive, or perform easy adhesion treatment on the surface to which the inner adhesive is applied to improve rewinding property and resistance to adhesive residue. To be done.
【００３２】本発明の両面テープの製造方法も、特に限
定されるものではないが、例えば、片面テープと同様な
方法で内側粘着剤と外側粘着剤を塗布、乾燥した後、外
側粘着剤面に両面離型処理を施したセパレーターを貼り
合せて一旦巻き取り、粘着剤が塗工されていない基材面
に、同様の方法で内側粘着剤と外側粘着剤を塗布乾燥し
て、巻き取ることにより作製できる。また、図２の粘着
剤層が三層である両面粘着テープは、例えば、ディップ
コーター等で不織布や布等に内側粘着剤を含浸・乾燥さ
せた後、両面離型処理を施したセパレーターを貼り合わ
せて一旦巻き取り、次に、セパレーターを剥がしなが
ら、外側粘着剤層をディッピングすることにより両側に
塗工して、両面処理を行ったセパレーターを貼り合わせ
て巻き取ることにより得ることができる。The method for producing the double-sided tape of the present invention is also not particularly limited. For example, the inner pressure-sensitive adhesive and the outer pressure-sensitive adhesive are applied and dried in the same manner as the single-sided tape, and then the outer pressure-sensitive adhesive surface is coated. By attaching a separator that has been subjected to release treatment on both sides and winding it once, apply the inner pressure-sensitive adhesive and the outer pressure-sensitive adhesive to the base material surface not coated with the pressure-sensitive adhesive in the same manner, dry it, and wind it up. Can be made. The double-sided pressure-sensitive adhesive tape having three pressure-sensitive adhesive layers shown in FIG. 2 is obtained by impregnating a non-woven fabric or cloth with an inner pressure-sensitive adhesive and drying it with a dip coater, and then applying a separator subjected to double-sided release treatment. It can be obtained by winding together and once winding, and then peeling off the separator and dipping the outer pressure-sensitive adhesive layer to apply the adhesive to both sides, and then laminating and winding the separator subjected to the double-side treatment.
【００３３】[0033]
【作用】本発明は、粘着付与樹脂を異なる比率で配合し
た粘着剤からなる二種の粘着剤を二層以上に形成してな
る粘着テープであり、各層間の粘着付与樹脂の移動特性
を利用することにより、所望の粘着特性に制御できる粘
着テープを提供するものである。この方法で作製した粘
着テープは、被着体への貼り付け作業時と貼着後や剥離
の際とで、異なる粘着特性を得ることができる。従っ
て、貼着しにくい形状の個所に用いるマスキングテープ
等、強粘着を要求されながら再剥離する用途や、粗面や
凹凸面等貼り付け作業が困難な個所に用いられる両面テ
ープ等、タック(初期接着性)と経時後の強い接着強度の
両立が求められる粘着テープ等に有用である。The present invention is a pressure-sensitive adhesive tape comprising two or more layers of two types of pressure-sensitive adhesives containing a pressure-sensitive adhesive resin blended in different ratios. By doing so, an adhesive tape that can be controlled to have desired adhesive properties is provided. The pressure-sensitive adhesive tape manufactured by this method can obtain different pressure-sensitive adhesive properties during the operation of attaching to the adherend and after the attachment and during the peeling. Therefore, such as a masking tape used for a part with a shape that is difficult to attach, such as a double-sided tape that is used for places where it is difficult to attach while re-peeling while strong adhesion is required or where rough surface or uneven surface is difficult to attach (initial It is useful for pressure-sensitive adhesive tapes and the like that are required to have both (adhesiveness) and strong adhesive strength over time.
【００３４】[0034]
【実施例】以下、本発明を実施例で更に具体的に説明す
るが、本発明はこれら実施例になんら限定されるもので
はない。尚、実施例中において表現する「部」は質量部
を示すものである。EXAMPLES The present invention will now be described in more detail with reference to examples, but the present invention is not limited to these examples. In the examples, "part" means "part by mass".
【００３５】実施例１
ＳＢＲ［ＪＳＲ（株）製、１０１３Ｎ］３５部とウォー
レス可塑度を３０に調整した素練り天然ゴム６５部をト
ルエンに溶解し、粘着付与樹脂［日本ゼオン（株）製、
クイントンＵ−１８５］５０部とＮ−β(アミノエチル)
γ-アミノプロピルトリメトキシシラン２部、水酸化マ
グネシウム［共和化学工業（株）製、キスマ５Ａ］１５
０部を加えて攪拌することによりゴム系粘着剤を得た。Example 1 35 parts of SBR [manufactured by JSR Corporation, 1013N] and 65 parts of masticated natural rubber having a Wallace plasticity adjusted to 30 were dissolved in toluene to give a tackifying resin [manufactured by Nippon Zeon Co., Ltd.,
Quinton U-185] 50 parts and N-β (aminoethyl)
2 parts of γ-aminopropyltrimethoxysilane, magnesium hydroxide [Kyowa Chemical Industry Co., Ltd., Kisuma 5A] 15
A rubber-based pressure-sensitive adhesive was obtained by adding 0 part and stirring.
【００３６】実施例２
ＳＢＲ［ＪＳＲ（株）製、１０１３Ｎ］３５部とウォー
レス可塑度を３０に調整した素練り天然ゴム６５部をト
ルエンに溶解し、粘着付与樹脂［日本ゼオン製、クイン
トンＵ−１８５］１２０部とＮ−β(アミノエチル)γ-
アミノプロピルトリメトキシシラン２部、水酸化マグネ
シウム［共和化学工業（株）製、キスマ５Ａ］１５０部
を加えて攪拌することによりゴム系粘着剤を得た。Example 2 35 parts of SBR [manufactured by JSR Corporation, 1013N] and 65 parts of masticated natural rubber whose Wallace plasticity was adjusted to 30 were dissolved in toluene to give a tackifying resin [Nippon Zeon, Quinton U- 185] 120 parts and N-β (aminoethyl) γ-
A rubber adhesive was obtained by adding 2 parts of aminopropyltrimethoxysilane and 150 parts of magnesium hydroxide [Kyowa Chemical Industry Co., Ltd., Kisuma 5A] and stirring.
【００３７】実施例３
実施例１の粘着剤を予め片面に易接着処理が施された３
８μｍのＰＥＴフィルムに、内側粘着剤として４０μｍ
の厚さとなるように塗布、乾燥を行い、次に、実施例２
の粘着剤を内側粘着剤が既に塗布されている面に、厚さ
が２０μｍになるように塗布、乾燥して巻き取ることに
より目的の粘着テープを得た。Example 3 The adhesive of Example 1 was subjected to an easy-adhesion treatment on one side in advance.
40μm as an inner adhesive on 8μm PET film
Coating and drying until the thickness of
The target adhesive tape was obtained by applying the pressure-sensitive adhesive of above to the surface to which the inner pressure-sensitive adhesive had already been applied so that the thickness was 20 μm, drying and winding.
【００３８】実施例４
実施例２の粘着剤を予め片面に易接着処理が施された３
８μｍのＰＥＴフィルムに、内側粘着剤として４０μｍ
の厚さとなるように塗布、乾燥を行い、次に、実施例１
の粘着剤を内側粘着剤が既に塗布されている面に、厚さ
が２０μｍになるように塗布、乾燥して巻き取ることに
より目的の粘着テープを得た。Example 4 The adhesive of Example 2 was previously subjected to an easy-adhesion treatment on one side.
40μm as an inner adhesive on 8μm PET film
Coating and drying to obtain a thickness of
The target adhesive tape was obtained by applying the pressure-sensitive adhesive of above to the surface to which the inner pressure-sensitive adhesive had already been applied so that the thickness was 20 μm, drying and winding.
【００３９】実施例５
アクリル酸ｎ−ブチル５５部、アクリル酸２−エチルヘ
キシル４０部、アクリル酸５部、重合開始剤としてベン
ゾイルパーオキサイド１部を酢酸エチルに溶解し、窒素
雰囲気下、６５℃で６時間反応させてアクリル系粘着剤
を得た。Example 5 55 parts of n-butyl acrylate, 40 parts of 2-ethylhexyl acrylate, 5 parts of acrylic acid and 1 part of benzoyl peroxide as a polymerization initiator were dissolved in ethyl acetate, and the mixture was heated at 65 ° C. in a nitrogen atmosphere. The reaction was carried out for 6 hours to obtain an acrylic pressure-sensitive adhesive.
【００４０】実施例６
実施例５で得られたアクリル系粘着剤に、粘着付与樹脂
［ヤスハラケミカル（株）製、ＹＳポリスター ２１０
０］を１００部添加し、溶解、攪拌することにより粘着
付与樹脂入りのアクリル系粘着剤を得た。Example 6 To the acrylic pressure-sensitive adhesive obtained in Example 5, a tackifying resin [YS Polystar 210, manufactured by Yasuhara Chemical Co., Ltd.] was used.
0] was added, dissolved and stirred to obtain an acrylic pressure-sensitive adhesive containing a tackifying resin.
【００４１】実施例７
実施例５の粘着剤を予め片面に易接着処理が施された３
８μｍのＰＥＴフィルムに、内側粘着剤として４０μｍ
の厚さとなるように塗布、乾燥を行い、次に、実施例６
の粘着剤を内側粘着剤が既に塗布されている面に、厚さ
が２０μｍになるように塗布、乾燥してセパレーターを
貼合せた後、巻き取ることにより目的の粘着テープを得
た。Example 7 The adhesive of Example 5 was preliminarily subjected to an easy-adhesion treatment on one side.
40μm as an inner adhesive on 8μm PET film
Coating and drying to obtain the desired thickness, and then Example 6
The target adhesive tape was obtained by applying the pressure-sensitive adhesive of (1) to the surface to which the inner pressure-sensitive adhesive had already been applied, to a thickness of 20 μm, drying and bonding the separator, and then winding up.
【００４２】実施例８
実施例６の粘着剤を予め片面に易接着処理が施された３
８μｍのＰＥＴフィルムに、内側粘着剤として４０μｍ
の厚さとなるように塗布、乾燥を行い、次に、実施例５
の粘着剤を内側粘着剤が既に塗布されている面に、厚さ
が２０μｍになるように塗布、乾燥して巻き取ることに
より目的の粘着テープを得た。Example 8 The adhesive of Example 6 was subjected to an easy-adhesion treatment on one side in advance.
40μm as an inner adhesive on 8μm PET film
Coating and drying to obtain a thickness of
The target adhesive tape was obtained by applying the pressure-sensitive adhesive of above to the surface to which the inner pressure-sensitive adhesive had already been applied so that the thickness was 20 μm, drying and winding.
【００４３】実施例９
実施例５で得られたアクリル系粘着剤に、粘着付与樹脂
〔ヤスハラケミカル(株）製ＹＳポリスター２１００〕
を５部添加し、溶解、撹拌することにより粘着付与樹脂
を少量混合したアクリル系粘着剤を得た。Example 9 A tackifying resin [YS Polystar 2100 manufactured by Yasuhara Chemical Co., Ltd.] was added to the acrylic pressure-sensitive adhesive obtained in Example 5.
Was added, dissolved and stirred to obtain an acrylic pressure-sensitive adhesive containing a small amount of tackifying resin.
【００４４】実施例１０
実施例９の粘着剤を予め片面に易接着処理が施された３
８μｍのＰＥＴフイルムに、内側粘着剤として４０μｍ
の厚さとなるように塗布、乾燥を行い、次に、実施例６
の粘着剤を内側粘着剤が既に塗布されている面に、厚さ
が２０μｍになるように塗布、乾燥してセパレーターを
貼合せた後、巻き取ることにより目的の粘着テープを得
た。Example 10 The adhesive of Example 9 was previously subjected to an easy-adhesion treatment on one side.
8μm PET film, 40μm as inner adhesive
Coating and drying to obtain the desired thickness, and then Example 6
The target adhesive tape was obtained by applying the pressure-sensitive adhesive of (1) to the surface to which the inner pressure-sensitive adhesive had already been applied, to a thickness of 20 μm, drying and bonding the separator, and then winding up.
【００４５】実施例１１
実施例６の粘着剤を予め片面に易接着処理が施された３
８μｍのＰＥＴフイルムに、内側粘着剤として４０μｍ
の厚さとなるように塗布、乾燥を行い、次に、実施例９
の粘着剤を内側粘着剤が既に塗布されている面に、厚さ
が２０μｍになるように塗布、乾燥して巻き取ることに
より目的の粘着テープを得た。Example 11 The adhesive of Example 6 was subjected to an easy-adhesion treatment on one side in advance (3)
8μm PET film, 40μm as inner adhesive
Coating and drying until the thickness of
The target adhesive tape was obtained by applying the pressure-sensitive adhesive of above to the surface to which the inner pressure-sensitive adhesive had already been applied so that the thickness was 20 μm, drying and winding.
【００４６】比較例１
実施例１のゴム系粘着剤を、予め片面に易接着処理が施
された３８μｍのＰＥＴフィルムに、６０μｍの厚さと
なるように塗布、乾燥を行い、巻き取ることにより片面
粘着テープを得た。Comparative Example 1 The rubber-based pressure-sensitive adhesive of Example 1 was applied to a 38 μm PET film, which had been previously subjected to an easy-adhesion treatment on one side, to a thickness of 60 μm, dried, and wound on one side. An adhesive tape was obtained.
【００４７】比較例２
実施例５のアクリル系粘着剤を、予め片面に易接着処理
が施された３８μｍのＰＥＴフィルムに、６０μｍの厚
さとなるように塗布、乾燥を行い、セパレーターを貼合
せた後、巻き取ることにより片面粘着テープを得た。Comparative Example 2 The acrylic pressure-sensitive adhesive of Example 5 was applied to a 38 μm PET film which had been subjected to easy adhesion treatment on one side in advance so as to have a thickness of 60 μm and dried, and a separator was attached. Then, it was wound up to obtain a single-sided adhesive tape.
【００４８】[0048]
１）粘着力：ＪＩＳ Ｃ-２１０７-1999
２）加熱後粘着力：ＪＩＳ Ｃ-２１０７-1999（１２０
℃×２Ｈ）
３）タック：ＪＩＳ Ｚ-０２３７-2000（角度２０°）
表１に本実施例３、４、７、８、１０、１１及び比較例
１〜２の粘着特性の試験結果を示す。1) Adhesive force: JIS C- 2107-1999 2) Adhesive force after heating: JIS C- 2107-1999 (120
℃ × 2H) 3) Tack: JIS Z-0237 -2000 (angle 20 °) Table 1 shows the test results of the adhesive properties of Examples 3, 4, 7, 8, 10, 11 and Comparative Examples 1 and 2. .
【００４９】[0049]
【表１】 [Table 1]
【００５０】[0050]
【発明の効果】以上のように、本発明の粘着テープは、
内側粘着剤層と外側粘着剤層の両層間で粘着付与樹脂の
移動が起こる特性を有しており、被着体への貼り付け作
業時と貼着状態や剥離時とで粘着層が異なる糊質に変化
して粘着力に変化が生じていることが分る。このよう
に、使用条件下で粘着剤層の粘着特性が変化することを
利用できることから、貼着しにくい形状の個所に用いる
マスキングテープ等のように、強粘着性を要求されなが
ら、なおかつ、最終的に再剥離しなければならないよう
な用途に使用されるテープや、粗面や凹凸面のような貼
り付け作業が困難な個所に用いられる両面テープ等のよ
うに、タック(初期接着性)と強い接着強度の両立が求め
られる両面粘着テープ等として極めて有用である。As described above, the adhesive tape of the present invention is
It has the property that the tackifying resin migrates between both the inner and outer pressure-sensitive adhesive layers, and the adhesive layer is different when it is attached to the adherend and when it is attached or peeled. It can be seen that the quality has changed and the adhesive strength has changed. In this way, since it is possible to utilize that the adhesive properties of the adhesive layer change under the conditions of use, it is necessary to have strong adhesiveness such as a masking tape used for a part having a shape that is difficult to attach, Tack (initial adhesion), such as tapes used for applications that require re-peeling, or double-sided tapes that are used on difficult-to-apply locations such as rough or uneven surfaces. It is extremely useful as a double-sided pressure-sensitive adhesive tape or the like that is required to have both strong adhesive strength.
【図１】粘着剤層が二層である本発明の片面粘着テープ
の断面図。FIG. 1 is a cross-sectional view of a single-sided pressure-sensitive adhesive tape of the present invention having two pressure-sensitive adhesive layers.
【図２】粘着剤層が三層である本発明の片面粘着テープ
の断面図。FIG. 2 is a cross-sectional view of a single-sided pressure-sensitive adhesive tape of the present invention having three pressure-sensitive adhesive layers.
【図３】粘着剤層が四層である本発明の両面粘着テープ
の断面図。FIG. 3 is a cross-sectional view of the double-sided pressure-sensitive adhesive tape of the present invention having four pressure-sensitive adhesive layers.
【図４】粘着剤層が単層である通常の粘着テープの断面
図FIG. 4 is a sectional view of an ordinary adhesive tape having a single adhesive layer.
１：基材、２：内側粘着剤層、３：外側粘着剤層、４：
粘着剤層1: substrate, 2: inner pressure-sensitive adhesive layer, 3: outer pressure-sensitive adhesive layer, 4:
Adhesive layer
フロントページの続き Ｆターム(参考） 4J004 AA04 AA05 AA06 AA10 AB01 AB05 CA04 CA06 CA07 CA08 CB01 CB02 CB04 CC02 CE01 EA01 EA05 EA06 FA04 FA08 4J040 BA202 CA011 CA031 DF001 DN032 JA09 KA26 Continued front page F-term (reference) 4J004 AA04 AA05 AA06 AA10 AB01 AB05 CA04 CA06 CA07 CA08 CB01 CB02 CB04 CC02 CE01 EA01 EA05 EA06 FA04 FA08 4J040 BA202 CA011 CA031 DF001 DN032 JA09 KA26
Claims (9)
有する内側粘着剤層と外側粘着剤層とを積層した積層粘
着剤層を有しており、該内外側粘着剤層間には、双方の
粘着剤エラストマー中の粘着付与樹脂の含有割合によっ
て双方の粘着力に差が設けられていることを特徴とする
両面又は片面粘着テープ。1. A laminated pressure-sensitive adhesive layer, comprising an inner pressure-sensitive adhesive layer and an outer pressure-sensitive adhesive layer, both of which contain a pressure-sensitive adhesive elastomer, laminated on the surface of the base material, and the inner and outer pressure-sensitive adhesive layers have both layers. A double-sided or single-sided pressure-sensitive adhesive tape, characterized in that the pressure-sensitive adhesive elastomer has a difference in adhesive strength depending on the content of the tackifying resin.
の含有割合が、前記内側粘着剤層における粘着付与樹脂
の含有割合よりも高いことを特徴とする請求項１記載の
両面又は片面粘着テープ。2. The double-sided or single-sided adhesive tape according to claim 1, wherein the content ratio of the tackifying resin in the outer pressure-sensitive adhesive layer is higher than the content ratio of the tackifying resin in the inner pressure-sensitive adhesive layer.
の含有割合が、前記内側粘着剤層における粘着付与樹脂
の配合割合よりも低いことを特徴とする請求項１記載の
両面又は片面粘着テープ。3. The double-sided or single-sided adhesive tape according to claim 1, wherein the content ratio of the tackifying resin in the outer pressure-sensitive adhesive layer is lower than the compounding ratio of the tackifying resin in the inner pressure-sensitive adhesive layer.
ーを含有する複数の粘着剤層を積層した積層粘着剤層で
あることを特徴とする請求項１〜３のいずれか１項に記
載の両面又は片面粘着テープ。4. The pressure-sensitive adhesive layer according to claim 1, wherein the inner pressure-sensitive adhesive layer is a laminated pressure-sensitive adhesive layer obtained by laminating a plurality of pressure-sensitive adhesive layers containing a pressure-sensitive adhesive elastomer. Double-sided or single-sided adhesive tape.
異なる種類の粘着剤エラストマーを含有することを特徴
とする請求項１〜４のいずれか１項に記載の両面又は片
面粘着テープ。5. The double-sided or single-sided adhesive tape according to claim 1, wherein the outer pressure-sensitive adhesive layer and the inner pressure-sensitive adhesive layer contain different kinds of pressure-sensitive adhesive elastomers.
同一種類の粘着剤エラストマーを有していることを特徴
とする請求項１〜４のいずれか１項に記載の両面又は片
面粘着テープ。6. The double-sided or single-sided adhesive according to claim 1, wherein the outer pressure-sensitive adhesive layer and the inner pressure-sensitive adhesive layer have the same kind of pressure-sensitive adhesive elastomer. tape.
系、天然ゴム系及び合成ゴム系から選ばれる一種もしく
は複数種であることを特徴とする請求項１〜６のいずれ
か１項に記載の両面又は片面粘着テープ。7. The double-sided adhesive according to claim 1, wherein the pressure-sensitive adhesive elastomer is one or more selected from acrylic, natural rubber and synthetic rubber. Single-sided adhesive tape.
態で加熱条件に曝される用途に使用される養生用又はマ
スキング用の粘着テープであることを特徴とする請求項
１〜７のいずれか１項に記載の両面又は片面粘着テー
プ。8. The double-sided or single-sided pressure-sensitive adhesive tape is a curing or masking pressure-sensitive adhesive tape used for applications exposed to heating conditions in an adhered state. The double-sided or single-sided adhesive tape according to item 1.
凸面等貼着しにくい個所に用いられる永久接着用の粘着
テープであることを特徴とする請求項１〜７のいずれか
１項に記載の両面又は片面粘着テープ。9. The double-sided or single-sided pressure-sensitive adhesive tape is a pressure-sensitive adhesive tape for permanent adhesion, which is used on a portion such as a rough surface or an uneven surface where it is difficult to adhere. Double-sided or single-sided adhesive tape according to.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001296011A JP4610818B2 (en) | 2001-09-27 | 2001-09-27 | Adhesive tape |
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| JP2003096415A true JP2003096415A (en) | 2003-04-03 |
| JP4610818B2 JP4610818B2 (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001296011A Expired - Fee Related JP4610818B2 (en) | 2001-09-27 | 2001-09-27 | Adhesive tape |
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| JP (1) | JP4610818B2 (en) |
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| JP2005274667A (en) * | 2004-03-23 | 2005-10-06 | Matsushita Electric Ind Co Ltd | Touch panel and input device using the same |
| WO2007037345A1 (en) * | 2005-09-29 | 2007-04-05 | Kokuyo S & T Co. Ltd. | Method of affixation, and pressure-sensitive adhesive for use in affixation |
| JP2007118592A (en) * | 2005-09-29 | 2007-05-17 | Kokuyo S&T Co Ltd | Pressure sensitive adhesive for bookbinding and bookbinding method for using the same |
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