JP2994411B2 - Adhesive sheet - Google Patents
Adhesive sheetInfo
- Publication number
- JP2994411B2 JP2994411B2 JP2038574A JP3857490A JP2994411B2 JP 2994411 B2 JP2994411 B2 JP 2994411B2 JP 2038574 A JP2038574 A JP 2038574A JP 3857490 A JP3857490 A JP 3857490A JP 2994411 B2 JP2994411 B2 JP 2994411B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- sensitive adhesive
- adhesive sheet
- adherend
- layer
- 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.)
- Expired - Fee Related
Links
Landscapes
- Adhesive Tapes (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は再剥離性を有する粘着シートに関する。The present invention relates to a pressure-sensitive adhesive sheet having removability.
従来ラベル等の粘着シートにおいて、被着体に貼着
後、剥離が可能で且つ再使用できるものが広く用いられ
ている。例えばメモ用紙や付箋として、用件や疑問等を
記入して一時的に文書などに貼着し、不要になった場合
に剥離して捨てる粘着シートや、被着体に貼る位置を確
認するために仮接着し、位置が違っている場合剥離して
再貼着したのちに本接着する粘着シートのような仮接着
可能な粘着シート等の再剥離性を有する粘着シートが知
られている。2. Description of the Related Art Conventionally, pressure-sensitive adhesive sheets such as labels that can be peeled off and reused after being adhered to an adherend have been widely used. For example, as a memo paper or sticky note, to fill in a matter or question etc. and temporarily affix it to a document, etc., to check the adhesive sheet to be peeled off and discarded when it is no longer needed, or to position it on the adherend 2. Description of the Related Art A pressure-sensitive adhesive sheet having removability, such as a pressure-sensitive adhesive sheet that can be temporarily bonded, such as a pressure-sensitive adhesive sheet that is temporarily bonded and peeled when the position is different and then re-adhered and then fully bonded, is known.
このような粘着シートとして、１）粘着剤層を印刷等
の方法により基材上に網点状に付着せしめ部分的に基材
上に形成した粘着シート、２）球状の粘着性微小粒子を
多数個バインダーを介して基材表面に付着形成してなる
粘着シート（例えば実開昭54−60661、実開昭55−4288
1）、３）基材表面に半円球状の粘着性微小粒子を多数
個その曲面が外側に向くように付着して粘着剤層を形成
した粘着シート（例えば実公昭57−57394）等が提案さ
れている。As such an adhesive sheet, 1) an adhesive sheet in which a pressure-sensitive adhesive layer is attached on a substrate in a dot-like manner by printing or the like and partially formed on the substrate, and 2) a large number of spherical adhesive fine particles. Adhesive sheets formed by adhering to the surface of a substrate via individual binders (for example, Japanese Utility Model Laid-Open No. 54-60661, Japanese Utility Model Laid-Open No. 55-4288).
1), 3) Adhesive sheets (for example, Japanese Utility Model Publication No. 57-57394) in which a large number of hemispherical adhesive fine particles are adhered to the surface of a base material so that the curved surface faces outward to form an adhesive layer are proposed. Have been.
しかしながら上記１）、２）の粘着シートにおいて
は、被着体へ一度貼着した後に剥離する場合に、網点状
の粘着剤や粘着性微小粒子が被着体側へ残存してしま
い、被着体表面を粘着剤で汚してしまうという問題点が
あった。また３）の粘着シートにおいては粘着剤が半円
球状のため、基材と粘着性微小粒子の間の結合が強くな
り１）、２）の場合に比べ、剥離時の粘着剤の残存とい
う問題をある程度改菩できるが、粘着シートを製造する
場合に、半円球状の粘着性微小粒子を予め製造しておく
必要があり、更に粘着性微小粒子を曲面を外側に向けて
基材に付着させるという面倒な作業が必要となる。従っ
て製造工程が増えるともに、微小粒子の曲面を全て外側
に向けて付着せしめることは技術的に困難であるという
製造上の問題点があった。However, in the pressure-sensitive adhesive sheets of 1) and 2) above, when the pressure-sensitive adhesive sheet is once adhered to the adherend and then peeled off, the dot-like pressure-sensitive adhesive or adhesive fine particles remain on the adherend side, and There is a problem that the body surface is stained with the adhesive. Further, in the pressure-sensitive adhesive sheet of 3), since the pressure-sensitive adhesive is hemispherical, the bond between the base material and the pressure-sensitive adhesive fine particles becomes strong, so that the pressure-sensitive adhesive remains during peeling as compared with the cases of 1) and 2). Can be modified to a certain extent, but when producing an adhesive sheet, it is necessary to produce semicircular adhesive microparticles in advance, and further adhere the adhesive microparticles to the substrate with the curved surface facing outward. This is a troublesome task. Therefore, there is a problem in manufacturing that the number of manufacturing steps increases and it is technically difficult to attach all the curved surfaces of the fine particles outward.
本発明は、上記の従来技術の欠点を解消するもので、
被着体からの剥離の際に被着体側に粘着剤が残存せず適
切な剥離を行うことができる、再剥離性を有する粘着シ
ートを提供することを目的とする。The present invention overcomes the disadvantages of the prior art described above,
It is an object of the present invention to provide a re-peelable pressure-sensitive adhesive sheet capable of performing appropriate peeling without leaving an adhesive on the adherend side when peeling from the adherend.
本発明は、 （１） 基材表面に10μｍ〜50μｍの厚みの粘着剤基層
を設けると共に、該粘着剤基層表面から外方に突出し、
高さが１μｍ〜25μｍの多数の半球状の粘着剤凸状体を
相互に離間させて粘着剤基層と一体的に設けた粘着シー
トであって、該粘着シートが粘着剤凸状体側から平坦表
面を有する被着体に貼着された後、該被着体から剥離さ
れる際に粘着剤が被着体に残存しないように粘着剤層を
構成したことを特徴とする粘着シート。The present invention provides: (1) a pressure-sensitive adhesive base layer having a thickness of 10 μm to 50 μm provided on a substrate surface, and protruding outward from the pressure-sensitive adhesive base layer surface;
A pressure-sensitive adhesive sheet having a large number of hemispherical pressure-sensitive adhesive convex bodies having a height of 1 μm to 25 μm and provided integrally with a pressure-sensitive adhesive base layer, wherein the pressure-sensitive adhesive sheet has a flat surface from the pressure-sensitive adhesive convex body side. A pressure-sensitive adhesive sheet characterized in that the pressure-sensitive adhesive layer has a pressure-sensitive adhesive layer such that the pressure-sensitive adhesive does not remain on the adherend when it is peeled off from the adherend after being adhered to the adherend having:
（２） 粘着剤層の表面に該粘着剤層表面形状に対応し
た凹部を有する離型フィルムが積層されていることを特
徴とする上記（１）記載の粘着シート、を要旨とするも
のである。(2) The adhesive sheet according to (1), wherein a release film having a concave portion corresponding to the surface shape of the adhesive layer is laminated on the surface of the adhesive layer. .
以下、本発明を図面に基き詳しく説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図に示すように、本発明の粘着シート１は、基材
２と該基材２の表面に形成した粘着剤層３から成り、粘
着剤層３は所定厚みに設けた粘着剤基層４と外方に突出
するように設けた多数の粘着剤凸状体５により形成さ
れ、粘着剤基層４と粘着剤凸状体５とは同一材料により
一体的に設けられている。粘着剤凸状体５の水平断面形
状は、点状、線状、格子状等任意であり、点状の場合は
円形、楕円形、回転放物面、三角形、四角形等種々の形
状のものが可能であるが、特に球状が望ましい。As shown in FIG. 1, the pressure-sensitive adhesive sheet 1 of the present invention comprises a substrate 2 and a pressure-sensitive adhesive layer 3 formed on the surface of the substrate 2, and the pressure-sensitive adhesive layer 3 has a pressure-sensitive adhesive base layer 4 provided at a predetermined thickness. And a plurality of pressure-sensitive adhesive convex bodies 5 provided so as to protrude outward, and the pressure-sensitive adhesive base layer 4 and the pressure-sensitive adhesive convex bodies 5 are integrally provided by the same material. The horizontal cross-sectional shape of the pressure-sensitive adhesive convex body 5 is arbitrary, such as a point, a line, and a lattice. In the case of a point, various shapes such as a circle, an ellipse, a paraboloid of revolution, a triangle, and a quadrangle are available. Although possible, spherical shapes are particularly desirable.
また突出方向の垂直断面形状は、再剥離適性上から線
状、格子状のいずれの場合も突出方向に滑らかな曲面や
テーパー面が形成されるものが好ましく、特に半円状が
好ましい。好ましい粘着剤凸状体５の立体形状としては
半球状が挙げられる。In addition, the vertical cross-sectional shape in the protruding direction is preferably such that a smooth curved surface or tapered surface is formed in the protruding direction in any case of a linear shape or a lattice shape from the viewpoint of removability, and particularly preferably a semicircular shape. A preferred three-dimensional shape of the pressure-sensitive adhesive convex body 5 is a hemisphere.
凸状体５の大きさと数は、被着体との再剥離特性と関
係する。凸状体の数が少なく密度が低いと充分な付着力
が得られず、数多く密度が高いと再剥離特性が悪くなる
傾向がある。凸状体１個の基底部の幅は通常１〜300μ
ｍであり、例えば半球状の形状の場合１〜50μｍ程度の
直径が好ましい、また凸状体の高さは１〜300μｍであ
る、凸状体の数は、その寸法によっても異なるが、直径
１〜50μｍの半球状の場合、1000〜1000000個/cm2程度
に通常形成される。The size and number of the protrusions 5 are related to the re-peeling characteristics with the adherend. If the number of the convex bodies is small and the density is low, sufficient adhesion may not be obtained, and if the density is large, the re-peelability tends to be poor. The width of the base of one convex body is usually 1 to 300μ.
m, for example, in the case of a hemispherical shape, a diameter of about 1 to 50 μm is preferable, the height of the convex body is 1 to 300 μm, and the number of the convex bodies depends on the size thereof. In the case of a hemisphere of 5050 μm, it is usually formed to have a size of about 1,000 to 100,000 pieces / cm 2 .
本発明の粘着シートは粘着剤凸状体の形状、寸法、密
度及び粘着剤の種類等を選択することにより、被着体の
種類に応じて再剥離性を最適に調節することができる。In the pressure-sensitive adhesive sheet of the present invention, the removability can be optimally adjusted according to the type of the adherend by selecting the shape, size, density, type of the pressure-sensitive adhesive, and the like of the pressure-sensitive adhesive convex body.
粘着剤凸状部５と一体的に形成される粘着剤基層３の
厚みは、粘着剤凸状体５の大きさにもよるが、好ましく
は10〜50μｍである。The thickness of the pressure-sensitive adhesive base layer 3 formed integrally with the pressure-sensitive adhesive convex portion 5 depends on the size of the pressure-sensitive adhesive convex body 5, but is preferably 10 to 50 μm.
粘着剤層３は基材２の表面全面に設けても、部分的に
設けてもよい。The pressure-sensitive adhesive layer 3 may be provided on the entire surface of the substrate 2 or may be provided partially.
粘着剤層３を形成する粘着剤としては、従来公知の粘
着テープやシール類に使用されている一般のアクリル
系、ゴム系の熱着剤が用いられ、溶剤系、エマルジョン
系の粘着剤が何れも使用できる。例えば、ポリイソプレ
ンゴム、ポリイソブチレンゴム、スチレンブタジエンゴ
ム、ブタジエンアクリロニトリルゴム等のゴム系樹脂、
（メタ）アクリル酸エステル系樹脂、ポリビニルエーテ
ル系樹脂、ポリ酢酸ビニル系樹脂、塩化ビニル酢酸ビニ
ル共重合体系樹脂、ポリスチレン系樹脂、ポリエステル
系樹脂、ポリアミド系樹脂、ポリ塩素化オレフィン系樹
脂、ポリビニルブチラール系樹脂等の任意の接着剤に、
適当な粘着付与剤、例えば、ロジン、ダンマル、重合ロ
ジン、部分水添ロジン、エステルロジン、ポリテルペン
系樹脂、テルペン変性体、石油系樹脂、シクロペンタジ
エン系樹脂、フェノール系樹脂、スチレン系樹脂、キシ
レン系樹脂、クマロンインデン系樹脂等を適当量添加し
たもの等が挙げられ、さらに必要に応じて軟化剤、充填
剤、老化防止剤等も添加することができる。As the pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer 3, a general acrylic or rubber-based heat-adhesive used for conventionally known pressure-sensitive adhesive tapes and seals is used, and any of a solvent-based and an emulsion-based pressure-sensitive adhesive is used. Can also be used. For example, rubber resins such as polyisoprene rubber, polyisobutylene rubber, styrene butadiene rubber, butadiene acrylonitrile rubber,
(Meth) acrylic ester resin, polyvinyl ether resin, polyvinyl acetate resin, vinyl chloride vinyl acetate copolymer resin, polystyrene resin, polyester resin, polyamide resin, polychlorinated olefin resin, polyvinyl butyral For any adhesive such as resin
Suitable tackifiers, for example, rosin, dammar, polymerized rosin, partially hydrogenated rosin, ester rosin, polyterpene-based resin, modified terpene, petroleum-based resin, cyclopentadiene-based resin, phenolic resin, styrene-based resin, xylene-based Resins, coumarone indene-based resins and the like are added in appropriate amounts, and further, if necessary, a softener, a filler, an antioxidant, and the like can be added.
基材２は、通常粘着シートの基材として使用できるも
のであればいずれでもよく、例えばアルミニウム、銅、
鉄等の金属箔、ポリエチレンテレフタレート、ポリブチ
レンテレフタレート、ポリエチレンテレフタレート／イ
ソフタレート共重合体等のポリエステル樹脂、ポリエチ
レン、ポリプロピレン、ポリメチルペンテン等のポリオ
レフィン樹脂、ポリフッ化ビニル、ポリフッ化ビニリデ
ン、ポリ４フッ化エチレン、エチレン−４フッ化エチレ
ン共重合体、等のポリフッ化エチレン系樹脂、ナイロン
６、ナイロン6.6等のポリアミド、ポリ塩化ビニル、塩
化ビニル／酢酸ビニル共重合体、エチレン／酢酸ビニル
共重合体、エチレン／ビニルアルコール共重合体、ポリ
ビニルアルコール、ビニロン等のビニル重合体、三酢酸
セルロース、セロファン等のセルロース系樹脂、ポリメ
タクリル酸メチル、ポリメタアクリル酸エチル、ポリア
クリル酸エチル、ポリアクリル酸ブチル等のアクリル系
樹脂、ポリスチレン、ポリカーボネート、ポリアリレー
ト、ポリイミド等の合成樹脂フィルム又はシートの単層
体又は複数の積層体、或いは、上質紙、薄葉紙、グラシ
ン紙、硫酸紙等の紙、硝子繊維、天然繊維、合成繊維等
の１種又は２種以上からなる布、不織布等が挙げられ
る。The base material 2 may be any as long as it can be generally used as a base material of a pressure-sensitive adhesive sheet. For example, aluminum, copper,
Metal foil such as iron, polyester resin such as polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate / isophthalate copolymer, polyolefin resin such as polyethylene, polypropylene, polymethylpentene, polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoride Polyethylene resins such as ethylene, ethylene tetrafluoroethylene copolymer, etc., polyamides such as nylon 6, nylon 6.6, polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, ethylene / vinyl acetate copolymer, Vinyl polymers such as ethylene / vinyl alcohol copolymer, polyvinyl alcohol, and vinylon; cellulose resins such as cellulose triacetate and cellophane; polymethyl methacrylate, polyethyl methacrylate, polyethyl acrylate, Acrylic resin such as butyl acrylate, polystyrene, polycarbonate, polyarylate, a single layer or a plurality of laminates of a synthetic resin film or sheet such as polyimide, or high-quality paper, thin paper, glassine paper, paper such as sulfuric acid paper, Cloths, non-woven fabrics, etc., composed of one or more of glass fibers, natural fibers, synthetic fibers, and the like are included.
基材２の厚みは特に限定されないが、通常12〜200μ
ｍ程度のものが用いられる。また基材２と粘着剤層３の
接着剤を上げるために必要に応じ、基材２表面にコロナ
放電処理、プラズマ処理、プライマーコート、脱脂処
理、表面粗面化処理等公知の易接着処理を施してもよ
い。Although the thickness of the substrate 2 is not particularly limited, it is usually 12 to 200 μm.
m is used. In order to raise the adhesive between the base material 2 and the pressure-sensitive adhesive layer 3, the surface of the base material 2 may be subjected to a known easy adhesion treatment such as corona discharge treatment, plasma treatment, primer coating, degreasing treatment, surface roughening treatment, or the like. May be applied.
本発明の粘着シートはその用途に応じ、筆記特性を付
与するための処理を施すことができる。例えぼ第２図に
示すように、基材２の粘着剤層形成面とは反対側の面を
筆記面６とすると、該筆記面６の表面を公知の方法で処
理して筆記部７を形成してもよい。The pressure-sensitive adhesive sheet of the present invention can be subjected to a treatment for imparting writing characteristics according to its use. For example, as shown in FIG. 2, when the surface of the base material 2 opposite to the surface on which the pressure-sensitive adhesive layer is formed is a writing surface 6, the surface of the writing surface 6 is treated by a known method to form the writing portion 7. It may be formed.
筆記部７を形成する方法として例えば、微小粒子を含
有する樹脂を塗布する方法、微小粒子を含有した形で基
材を作成する方法、基材表面をサンドブラスト等の既知
の方法にて粗面化する等の方法が挙げられる。As a method of forming the writing portion 7, for example, a method of applying a resin containing fine particles, a method of forming a base material containing fine particles, and roughening the surface of the base material by a known method such as sandblasting And the like.
また必要に応じ、基材２の片面又は両面に絵柄、金属
薄膜等からなる装飾層８を全面又は部分的に印刷、蒸着
等の方法で設けることができる。If necessary, a decorative layer 8 made of a pattern, a metal thin film, or the like can be provided on one or both surfaces of the base material 2 by printing, vapor deposition, or the like on the entire surface or in part.
第２図に示すように本発明粘着シート１は、粘着剤凸
状体５が粘着剤基層４と一体になっているために、基材
２に強く付着し、基材２へと固定力が強い。その結果、
本発明粘着シートを被着体９に貼着後、剥離する際に凸
状体５が基材２から脱離して被着体９表面に残存すると
いう虞れがなく良好な剥離を行うことができる。As shown in FIG. 2, in the pressure-sensitive adhesive sheet 1 of the present invention, since the pressure-sensitive adhesive convex body 5 is integrated with the pressure-sensitive adhesive base layer 4, the pressure-sensitive adhesive sheet 1 strongly adheres to the base material 2 and has a fixing force to the base material 2. strong. as a result,
After sticking the pressure-sensitive adhesive sheet of the present invention to the adherend 9, it is possible to perform good peeling without fear that the convex body 5 is detached from the substrate 2 and remains on the surface of the adherend 9 when peeling off. it can.
次に、本発明の粘着シートの製造方法について説明す
る。第３図（ａ）に示すように、多数の凹部10を形成し
てなる離型フィルム11を用意し、この離型フィルムの表
面に、同図（ｂ）に示すように粘着剤を凹部10の深さよ
りも厚く塗工する。即ち、粘着剤が凹部10を完全に埋め
尽すと共に、その上に連続して所定厚みの粘着剤層が形
成されるように塗工する。次いで同図（Ｃ）に示すよう
に粘着剤層３の表面に基材２を貼り合わせ、再剥離性を
有する粘着シート１を得る。Next, a method for producing the pressure-sensitive adhesive sheet of the present invention will be described. As shown in FIG. 3 (a), a release film 11 having a large number of concave portions 10 is prepared, and an adhesive is provided on the surface of the release film 11 as shown in FIG. 3 (b). Apply thicker than the depth of That is, the pressure-sensitive adhesive is applied so as to completely fill the recess 10 and a pressure-sensitive adhesive layer having a predetermined thickness is continuously formed thereon. Next, as shown in FIG. 2C, the base material 2 is attached to the surface of the pressure-sensitive adhesive layer 3 to obtain the pressure-sensitive adhesive sheet 1 having removability.
上記工程において、凹部10に充填された粘着剤が粘着
剤凸状体５を形成し、その上に連続的に所定厚みをもっ
て塗工された粘着剤が粘着剤基層４を形成する、離型フ
ィルム11の凹部10の形状としては、上記粘着剤凸状体５
の形状に対応したものを使用すればよく、離型フィルム
11に凹部10を形成する方法としては、従来公知の熱圧エ
ンボス加工等が挙げられる。In the above process, a release film in which the pressure-sensitive adhesive filled in the concave portion 10 forms the pressure-sensitive adhesive convex body 5 and the pressure-sensitive adhesive continuously applied with a predetermined thickness forms the pressure-sensitive adhesive base layer 4 The shape of the concave portion 10 of the pressure-sensitive adhesive
What is necessary is to use the one corresponding to the shape of the release film.
As a method of forming the concave portion 10 in the 11, a conventionally known hot-press embossing or the like can be used.
離型フィルム11の材質は、離型フィルム11と粘着剤層
３の間の接着力が基材２と粘着剤層３の間の接着力より
も小さいものであれば材質は特に限定されない。The material of the release film 11 is not particularly limited as long as the adhesive force between the release film 11 and the adhesive layer 3 is smaller than the adhesive force between the base material 2 and the adhesive layer 3.
離型フィルムの材質としては、ポリエチレンテレフタ
レート、ポリブチレンテレフタレート、ポリエチレンテ
レフタレート／イソフタレート共重合体等のポリエステ
ル樹脂、ポリエチレン、ポリプロピレン、ポリメチルペ
ンテン等のポリオレフィン樹脂、ポリフッ化ビニル、ポ
リフッ化ビニリデン、ポリ４フッ化エチレン、エチレン
−４フッ化エチレン共重合体等のポリフッ化エチレン系
樹脂、ナイロン６、ナイロン6.6等のポリアミド、ポリ
塩化ビニル、塩化ビニル／酢酸ビニル共重合体、エチレ
ン／酢酸ビニル共重合体、エチレン／ビニルアルコール
共重合体、ポリビニルアルコール、ビニロン等のビニル
重合体、三酢酸セルロース、セロファン等のセルロース
系樹脂、ポリメタアクリル酸メチル、ポリメタアクリル
酸エチル、ポリアクリル酸エチル、ポリアクリル酸ブチ
ル等のアクリル系樹脂、ポリスチレン、ポリカーボネー
ト、ポリアリレート、ポリイミド等の合成樹脂フィルム
又はシートの単層体又はそれらの複数の積層体、或いは
上質紙、薄葉紙、グラシン紙、硫酸紙等の紙が挙げられ
る、 また離型フィルム11と粘着剤層３の離型を容易にする
ために、離型処理を施すことができる。離型処理は離型
フィルム11に凹部10を設ける前に行っても、凹部10を設
けた後に行ってもよい。Examples of the material of the release film include polyester resins such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene terephthalate / isophthalate copolymer, polyolefin resins such as polyethylene, polypropylene, and polymethylpentene, polyvinyl fluoride, polyvinylidene fluoride, and poly-4. Polyfluorinated ethylene resins such as ethylene fluoride and ethylene-tetrafluoroethylene copolymer; polyamides such as nylon 6 and nylon 6.6; polyvinyl chloride; vinyl chloride / vinyl acetate copolymer; ethylene / vinyl acetate copolymer , Vinyl polymers such as ethylene / vinyl alcohol copolymer, polyvinyl alcohol, and vinylon; cellulose resins such as cellulose triacetate and cellophane; polymethyl methacrylate, polyethyl methacrylate, and polyacrylic Ethyl acid, acrylic resin such as polybutyl acrylate, polystyrene, polycarbonate, polyarylate, single layer of synthetic resin film or sheet such as polyimide or a plurality of laminates thereof, or high quality paper, thin paper, glassine paper, sulfuric acid Paper such as paper may be used. In order to facilitate release of the release film 11 and the pressure-sensitive adhesive layer 3, a release treatment can be performed. The release treatment may be performed before the concave portion 10 is provided in the release film 11 or after the concave portion 10 is provided.
離型処理としては、例えば弗素系樹脂、パラフィンワ
ックス、モンタンワックス、合成ワックス等のワックス
類や、シリコーン等の離型剤を公知のベヒクル、例えば
アクリル系樹脂、繊維素系樹脂、ビニル系樹脂等に添加
してなる塗料を離型フィルム面に塗布して該塗料の塗膜
を形成したり、離型性の樹脂、例えば、弗素系樹脂、シ
リコーン、ポリシロキサン、メラミン系樹脂、ウレタン
系樹脂、ポリオレフィン樹脂、電離放射線架橋型の多官
能のアクリレート、ポリエステル、エポキシ、チタンキ
レート、ポリイミン等の樹脂を離型フィルム面に塗工し
て該樹脂の皮膜を形成するか又は上記の樹脂をエクスト
ルージョンコートなどで離型フィルム上にラミネートし
て、離型層を0.1〜１μｍ程度の厚さに離型フィルムに
形成する方法が挙げられる。As the release treatment, for example, a wax such as a fluorine-based resin, paraffin wax, montan wax, or synthetic wax, or a release agent such as silicone is used as a known vehicle, for example, an acrylic resin, a cellulose resin, a vinyl resin, or the like. To the release film surface to form a coating film of the paint, or a releasable resin, for example, a fluorine-based resin, silicone, polysiloxane, a melamine-based resin, a urethane-based resin, Polyolefin resin, ionizing radiation cross-linkable polyfunctional acrylate, polyester, epoxy, titanium chelate, polyimine, or other resin is applied to the release film surface to form a film of the resin, or the above resin is subjected to extrusion coating. Laminating on a release film with a method such as forming a release layer to a thickness of about 0.1 to 1 μm on the release film. That.
粘着剤の離型フィルム11への塗工方法は特に限定され
ず、例えばロールコーティング、ダイコーティング、グ
ラビアコーティング、コンマコート等慣用のコーティン
グ方法により、粘着剤層を形成することができる。なか
でもコンマコートのような後計量法の方が、塗工面の平
滑性に優れ好ましい、本発明の粘着シートは単票でも連
続したロール状のいずれの形態でも製造することができ
る。The method for applying the pressure-sensitive adhesive to the release film 11 is not particularly limited, and the pressure-sensitive adhesive layer can be formed by a conventional coating method such as roll coating, die coating, gravure coating, or comma coating. Among them, the post-measurement method such as comma coat is preferable because the coated surface is excellent in smoothness, and the pressure-sensitive adhesive sheet of the present invention can be manufactured in either a single-sheet or continuous roll form.
連続したロール状で粘着シートを製造する場合、粘着
材を離型フィルムに塗布し基材を貼り合わせた後、離型
フィルムを剥離せずにそのままロール状に巻き取る方法
や、基材の裏面上に公知の材料、方法等で離型処理を施
し、離型フィルムを剥離して粘着シートをロール状に巻
き取る方法のどちらでもよい、離型フィルムを剥離して
ロール上に巻き取られた粘着シートは、使用時に離型フ
ィルムを剥離する手間を省くことができる、 本発明粘着シート１は粘着剤層３に多数の粘着剤凸状
体５を有するために、被着体９に貼着した場合、粘着剤
層３と被着体の間の接触面積が小さくなり、粘着シート
１の接着力が適当に低下し、被着体９からの剥離が容易
に行える。When manufacturing a pressure-sensitive adhesive sheet in a continuous roll form, apply the pressure-sensitive adhesive to the release film, attach the substrate, and then roll it up in a roll without peeling off the release film. A release treatment may be performed using a known material, a method, or the like, and the release film may be peeled off and the pressure-sensitive adhesive sheet may be wound into a roll. The release film may be peeled off and wound on a roll. The pressure-sensitive adhesive sheet can save the trouble of peeling the release film at the time of use. Since the pressure-sensitive adhesive sheet 1 of the present invention has a large number of pressure-sensitive adhesive convex bodies 5 on the pressure-sensitive adhesive layer 3, the pressure-sensitive adhesive sheet 1 is adhered to the adherend 9. In this case, the contact area between the pressure-sensitive adhesive layer 3 and the adherend is reduced, the adhesive force of the pressure-sensitive adhesive sheet 1 is appropriately reduced, and separation from the adherend 9 can be easily performed.
また粘着剤凸状体５を粘着剤基層４表面から外方に突
出するように設けたことにより、粘着シートを軽い押圧
により粘着剤凸状体５のみを被着体９に付着させること
により仮接着し、更に強く押圧して粘着剤基層４まで被
着体に付着させることにより本接着することができる。In addition, since the pressure-sensitive adhesive convex body 5 is provided so as to protrude outward from the surface of the pressure-sensitive adhesive base layer 4, the pressure-sensitive adhesive sheet is temporarily pressed by applying only the pressure-sensitive adhesive convex body 5 to the adherend 9 by light pressing. Adhering, and further pressing strongly to adhere to the adherend up to the pressure-sensitive adhesive base layer 4 can realize the final adhesion.
更に、粘着剤凸状体５と粘着剤基層４が一体に形成さ
れて粘着剤層３を形成しているために、粘着剤凸状体５
は粘着剤基層４を介して基材２に強固に固定保持され、
粘着シートの被着体９からの剥離時に粘着剤凸状体５が
離脱して被着体９側に残置するということはない、 〔実施例〕 以下、具体的実施例を挙げて本発明を更に詳細に説明
する。Furthermore, since the pressure-sensitive adhesive convex body 5 and the pressure-sensitive adhesive base layer 4 are integrally formed to form the pressure-sensitive adhesive layer 3, the pressure-sensitive adhesive convex body 5
Is firmly fixed and held on the base material 2 via the adhesive base layer 4,
When the pressure-sensitive adhesive sheet is peeled off from the adherend 9, the pressure-sensitive adhesive convex body 5 does not separate and remain on the adherend 9 side. Examples Hereinafter, the present invention will be described with reference to specific examples. This will be described in more detail.
実施例１ 表面に半径25μｍの半球状の凹部をエンボス加工によ
り多数形成したポリプロピレン製の離型フィルムの表面
に、粘度3000cpsのアクリル系２液粘着剤を、半球状の
凹部を充墳し更にフィルム平面部より10μｍの厚みにな
るように塗工した後、粘着剤を120℃で１分間乾燥して
粘着剤層を形成した。次いで、厚さ38μｍのポリエチレ
ンテレフタレート製のフィルムを上記粘着剤層の表面に
ラミネータを用いて貼り合わせて粘着シートを得た。Example 1 A two-part acrylic adhesive having a viscosity of 3000 cps was filled with a hemispherical concave part on the surface of a polypropylene release film having a large number of hemispherical concave parts with a radius of 25 μm formed by embossing on the surface. After coating to a thickness of 10 μm from the flat part, the adhesive was dried at 120 ° C. for 1 minute to form an adhesive layer. Next, a film made of polyethylene terephthalate having a thickness of 38 μm was attached to the surface of the pressure-sensitive adhesive layer using a laminator to obtain a pressure-sensitive adhesive sheet.
得られた粘着シートの離型フィルムを剥離して再剥離
性を試験したところ、被着体表面に粘着剤が残存するこ
となく良好に剥離することができた。When the release film of the obtained pressure-sensitive adhesive sheet was peeled off and the re-peelability was tested, it was confirmed that the pressure-sensitive adhesive was successfully peeled off without the pressure-sensitive adhesive remaining on the adherend surface.
以上説明したように本発明粘着シートは、多数の粘着
剤凸状体を、粘着剤基層から外方に突出するように粘着
剤基層と一体に設けたことにより、粘着剤凸状体は粘着
剤基層を介して基材に強固に固定保持されるため、粘着
シートを被着体から剥離する際に、従来の粘着シートに
比べ被着体側に粘着剤が残存せず適確な剥離を行うこと
ができる。As described above, the pressure-sensitive adhesive sheet of the present invention has a large number of pressure-sensitive adhesive convex bodies, which are provided integrally with the pressure-sensitive adhesive base layer so as to protrude outward from the pressure-sensitive adhesive base layer. Since the adhesive sheet is firmly fixed and held through the base layer, when the adhesive sheet is peeled from the adherend, the adhesive does not remain on the adherend side and the accurate peeling is performed as compared with the conventional adhesive sheet. Can be.
更に本発明製造方法は、凹部を多数有する離型フィル
ムの表面に粘着剤を凹部の深さよりも厚く塗工し、つい
で基材を貼り合わせるものであるから、従来の粘着シー
トの製法に比べて製造が簡単であり、剥離特性の良好な
粘着シート、高い生産性と安定した品質で生産すること
ができる。Furthermore, since the manufacturing method of the present invention is to apply a pressure-sensitive adhesive to the surface of the release film having a large number of concave portions thicker than the depth of the concave portions, and then to bond the base material, compared with the conventional method for producing a pressure-sensitive adhesive sheet, It is easy to manufacture, and can be produced with a pressure-sensitive adhesive sheet having good release characteristics, high productivity and stable quality.
本発明の製造方法によれば、凹部を有する離型フィル
ムの表面に粘着剤を凹部の深さよりも厚く塗工すること
により、粘着剤基層表面から外方に突出する粘着剤凸状
体を粘着剤基層と一体に形成することができ、粘着剤凸
状体を別体に形成する工程が不要となり、凸状体の形状
も均一なものが得られ、生産性、品質の安定性が向上す
る。更に、凹部を有する離型フィルム使用しているため
に、離型フィルムの形状を変えることで粘着剤凸状部の
形状を変えることが可能で、被着体の種類等に応じて剥
離特性を変えることが容易にできる。According to the production method of the present invention, the pressure-sensitive adhesive convex body projecting outward from the pressure-sensitive adhesive base layer surface is adhered by applying the pressure-sensitive adhesive to the surface of the release film having the concave portions thicker than the depth of the concave portions. It can be formed integrally with the agent base layer, and the step of forming the pressure-sensitive adhesive convex body separately becomes unnecessary, and the uniform shape of the convex body is obtained, thereby improving the productivity and the stability of quality. . Furthermore, since a release film having a concave portion is used, it is possible to change the shape of the pressure-sensitive adhesive convex portion by changing the shape of the release film. Easy to change.
第１図は本発明粘着シートの一例を示す縦断面図、第２
図は本発明粘着シートの使用例を示す縦断面図、第３図
（ａ）〜（ｃ）は、本発明粘着シートの製造方法を示す
説明図である。 １……粘着シート、２……基材、３……粘着剤層、４…
…粘着剤基層、５……粘着剤凸状体、10……凹部、11…
…離型フィルムFIG. 1 is a longitudinal sectional view showing an example of the pressure-sensitive adhesive sheet of the present invention, FIG.
The figure is a longitudinal sectional view showing a usage example of the pressure-sensitive adhesive sheet of the present invention, and FIGS. 3 (a) to 3 (c) are explanatory views showing a method for producing the pressure-sensitive adhesive sheet of the present invention. 1 ... adhesive sheet, 2 ... substrate, 3 ... adhesive layer, 4 ...
... adhesive base layer, 5 ... adhesive convex, 10 ... concave, 11 ...
… Release film
Claims (2)
基層を設けると共に、該粘着剤基層表面から外方に突出
し、高さが１μｍ〜25μｍの多数の半球状の粘着剤凸状
体を相互に離間させて粘着剤基層と一体的に設けた粘着
シートであって、該粘着シートが粘着剤凸状体側から平
坦表面を有する被着体に貼着された後、該被着体から剥
離される際に粘着剤が被着体に残存しないように粘着剤
層を構成したことを特徴とする粘着シート。1. A pressure-sensitive adhesive base layer having a thickness of 10 μm to 50 μm provided on the surface of a base material, and a large number of hemispherical pressure-sensitive adhesive protrusions projecting outward from the surface of the pressure-sensitive adhesive base layer and having a height of 1 μm to 25 μm. Are separated from each other and provided integrally with the pressure-sensitive adhesive base layer, and after the pressure-sensitive adhesive sheet is adhered to the adherend having a flat surface from the pressure-sensitive adhesive convex body side, from the adherend A pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive layer such that the pressure-sensitive adhesive does not remain on an adherend when peeled off.
応した凹部を有する離型フィルムが積層されていること
を特徴とする請求項１記載の粘着シート。2. The pressure-sensitive adhesive sheet according to claim 1, wherein a release film having a concave portion corresponding to the surface shape of the pressure-sensitive adhesive layer is laminated on the surface of the pressure-sensitive adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2038574A JP2994411B2 (en) | 1990-02-20 | 1990-02-20 | Adhesive sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2038574A JP2994411B2 (en) | 1990-02-20 | 1990-02-20 | Adhesive sheet |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10255299A Division JP3017717B2 (en) | 1998-09-09 | 1998-09-09 | Adhesive sheet and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03243677A JPH03243677A (en) | 1991-10-30 |
| JP2994411B2 true JP2994411B2 (en) | 1999-12-27 |
Family
ID=12529063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2038574A Expired - Fee Related JP2994411B2 (en) | 1990-02-20 | 1990-02-20 | Adhesive sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2994411B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021145665A1 (en) * | 2020-01-13 | 2021-07-22 | 이종환 | Eco-friendly one-sided antioxidant adhesive tape for water tank sealing, method for manufacturing same, and water tank module using same |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2503717Y2 (en) * | 1992-04-03 | 1996-07-03 | 日栄化工株式会社 | Adhesive sheet |
| US5296277A (en) * | 1992-06-26 | 1994-03-22 | Minnesota Mining And Manufacturing Company | Positionable and repositionable adhesive articles |
| US6440880B2 (en) | 1993-10-29 | 2002-08-27 | 3M Innovative Properties Company | Pressure-sensitive adhesives having microstructured surfaces |
| CA2173855C (en) | 1993-10-29 | 2007-06-26 | Mieczyslaw H. Mazurek | Pressure-sensitive adhesives having microstructured surfaces |
| JPH07138541A (en) * | 1993-11-15 | 1995-05-30 | Nichiei Kako Kk | Protected self-adhesive film |
| US6197397B1 (en) | 1996-12-31 | 2001-03-06 | 3M Innovative Properties Company | Adhesives having a microreplicated topography and methods of making and using same |
| US6524675B1 (en) | 1999-05-13 | 2003-02-25 | 3M Innovative Properties Company | Adhesive-back articles |
| US6838142B2 (en) | 2001-05-18 | 2005-01-04 | 3M Innovative Properties Company | Specular laminates |
| DE60112131T2 (en) * | 2001-09-14 | 2006-01-12 | Lintec Corp. | ADHESIVE ADHESIVE FOIL AND METHOD FOR THE PRODUCTION THEREOF |
| EP1445294B2 (en) * | 2001-09-14 | 2012-04-11 | Lintec Corporation | Novel easily stuck adhesive sheet and its manufacture method |
| US8323773B2 (en) | 2001-10-09 | 2012-12-04 | 3M Innovative Properties Company | Laminates with structured layers |
| JP2004115766A (en) * | 2002-09-30 | 2004-04-15 | Dainippon Printing Co Ltd | Pressure-sensitive adhesive sheet |
| WO2005100498A1 (en) * | 2004-04-16 | 2005-10-27 | Riken Technos Corporation | Pressure-sensitive adhesive sheet and releasing material |
| JP2006192869A (en) * | 2005-01-17 | 2006-07-27 | Keio Gijuku | Adhesive film |
| JP5197921B2 (en) * | 2006-03-17 | 2013-05-15 | 株式会社生産日本社 | Plastic bag body |
| JP2008163155A (en) * | 2006-12-27 | 2008-07-17 | Kokuyo Co Ltd | Adhesive agent transfer sheet |
| JP4755682B2 (en) * | 2008-12-11 | 2011-08-24 | 王子タック株式会社 | Removable adhesive sheet |
-
1990
- 1990-02-20 JP JP2038574A patent/JP2994411B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021145665A1 (en) * | 2020-01-13 | 2021-07-22 | 이종환 | Eco-friendly one-sided antioxidant adhesive tape for water tank sealing, method for manufacturing same, and water tank module using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03243677A (en) | 1991-10-30 |
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