JPH0848951A - Production of tearable double-coated self-adhesive tape, easily stickable double-coated self-adhesive tape, and peelable double-coated self-adhesive tape - Google Patents
Production of tearable double-coated self-adhesive tape, easily stickable double-coated self-adhesive tape, and peelable double-coated self-adhesive tapeInfo
- Publication number
- JPH0848951A JPH0848951A JP18711294A JP18711294A JPH0848951A JP H0848951 A JPH0848951 A JP H0848951A JP 18711294 A JP18711294 A JP 18711294A JP 18711294 A JP18711294 A JP 18711294A JP H0848951 A JPH0848951 A JP H0848951A
- Authority
- JP
- Japan
- Prior art keywords
- double
- adhesive tape
- sensitive adhesive
- pressure
- synthetic resin
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、手切れ性のよい両面粘
着テープ及び貼付時に被着体と該テープの間への空気層
の生成を防止し得る易貼付性両面粘着テープ、並びに再
剥離性の良い両面粘着テープの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided pressure-sensitive adhesive tape having good hand-cutting properties, an easily-adhesive double-sided pressure-sensitive adhesive tape capable of preventing the formation of an air layer between the adherend and the tape at the time of application, and re-peeling. The present invention relates to a method for producing a double-sided adhesive tape having good properties.
【０００２】[0002]
【従来の技術】従来から、一般掲示物や各種材料の接着
用等に用いられている両面粘着テープには、基材として
紙、不織布又は合成樹脂フィルムが用いられている。紙
や不織布を使用したものでは、所望の位置で手で切り取
ることができる手切れ性があるが、切断面が整わないと
いう問題があった。また、防湿や防水の面で有利な合成
樹脂フィルムを使用したものでは、手切れ性が悪いため
テープカッター等の道具を使用して切断していた。な
お、合成樹脂フィルムを基材とするもので、片面粘着テ
ープでは、手切れ性を付与するために、例えば特公昭５
４−７３００号公報記載の、基材がエチレン成分を３．
５〜１５重量％含み、横方向に４倍以上で一軸延伸され
ることにより分子配向された粘着テープが知られてい
る。しかし、合成樹脂フィルムを基材とする両面粘着テ
ープでは、手切れ性の良いものはなかった。2. Description of the Related Art Conventionally, paper, nonwoven fabric or synthetic resin film is used as a base material for a double-sided adhesive tape which has been used for adhesion of general notices and various materials. In the case of using paper or non-woven fabric, there is a problem that the cut surface is not aligned although it has a hand-cutting property that can be cut by hand at a desired position. Further, in the case of using a synthetic resin film which is advantageous in terms of moisture proof and waterproof, it is difficult to cut by hand, so that it is cut using a tool such as a tape cutter. It should be noted that a synthetic resin film is used as a base material.
The base material described in JP-A-4-7300 has an ethylene component of 3.
There is known a pressure-sensitive adhesive tape which contains 5 to 15% by weight and is molecularly oriented by uniaxially stretching in the transverse direction by a factor of 4 or more. However, none of the double-sided pressure-sensitive adhesive tapes having a synthetic resin film as a base material have good hand tearability.
【０００３】また、従来、合成樹脂フィルムを基材とす
る両面粘着テープは、通気性がないため、貼付時に被着
体と該テープの間に空気が入らないように、まず、端部
を貼り付け、その端部より手又は治具等で空気を追い出
しながら貼付しており、煩雑であるという問題点があっ
た。Conventionally, since the double-sided adhesive tape using a synthetic resin film as a base material is not air-permeable, the end portions are first attached so that air does not enter between the adherend and the tape at the time of attachment. There is a problem in that it is complicated because it is attached while the air is expelled from its end by hand or a jig.
【０００４】また、掲示用等の両面粘着テープの使用形
態に、粘着剤面の一面だけは第１の被着体（例えば、
掲示板）に粘着させておき、他面の粘着剤面に粘着され
た第２の被着体（例えば、ポスター等）を剥がした後、
別の第２の被着体（例えば、他のポスター等）を再び付
着させて使用する形態、又は、第１の被着体（例え
ば、掲示板）から、両面粘着テープ自体を他面に粘着さ
れた第２の被着体（例えば、ポスター等）と共に、粘着
剤を残さずに剥離して、第１の被着体（例えば、掲示
板）の次の使用に備えるような使用形態、などがあり、
このような用途に用いるものを再剥離性両面粘着テープ
と称している。この再剥離性両面粘着テープは、一面の
粘着剤を強い粘着力を持つものとし、他面の粘着剤を弱
粘着としており、その製造方法としては、基材フィルム
の表裏各々の面に、別々の工程で別々の粘着剤を塗布し
ていた。そのため、工程が複雑になるという問題点があ
り、一種類の粘着剤で塗布工程が一度で済む製造方法が
求められていた。In addition, in the usage form of the double-sided adhesive tape for posting, only one side of the adhesive side has a first adherend (for example,
After making it adhere to the bulletin board) and peeling off the second adherend (for example, a poster, etc.) adhered to the adhesive surface on the other side,
Another double adherend (for example, another poster or the like) is reattached and used, or the double-sided adhesive tape itself is adhered to the other surface from the first adherend (for example, bulletin board). In addition to the second adherend (for example, a poster), the adhesive may be peeled off without leaving the first adherend (for example, a bulletin board) in preparation for the next use. ,
What is used for such an application is called a removable double-sided pressure-sensitive adhesive tape. This double-sided removable pressure-sensitive adhesive tape has a pressure-sensitive adhesive on one side and a weak pressure-sensitive adhesive on the other side, and the production method is as follows: Different adhesives were applied in the step. Therefore, there is a problem that the process becomes complicated, and there has been a demand for a manufacturing method in which the coating process can be completed with one kind of adhesive.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記の問題点
を解決するものであり、請求項１の発明の目的は、手で
容易に切断でき、且つ切断面を粗らすことなく切断可能
な手切れ性良好な両面粘着テープを提供することであ
り、請求項２の発明の目的は、貼付時に被着体とテープ
の間に空気が入りにくい易貼付性両面粘着テープを提供
することであり、請求項３の発明の目的は、製造方法が
簡単な再剥離性両面粘着テープの製造方法を提供するこ
とである。SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and an object of the present invention is to easily cut by hand and to cut without roughening the cut surface. It is an object of the invention of claim 2 to provide an easily attachable double-sided adhesive tape in which air is unlikely to enter between the adherend and the tape during application. Therefore, an object of the invention of claim 3 is to provide a method for producing a removable double-sided pressure-sensitive adhesive tape which is simple in production method.
【０００６】[0006]
【課題を解決するための手段】請求項１記載の手切れ性
合成樹脂フィルムは、一面にエンボス加工が施されてな
る合成樹脂フィルムの両面に粘着剤層が設けられてなる
両面粘着テープであって、該エンボスは多数の逆四角錐
状の凹部で形成され、該逆四角錐の相互に直交する稜線
の方向が該合成樹脂フィルムの縦横方向にほゞ一致さ
れ、且つ市松状に配列されてなることを特徴とするもの
である。The hand-cuttable synthetic resin film according to claim 1 is a double-sided pressure-sensitive adhesive tape comprising a synthetic resin film having one surface embossed and pressure-sensitive adhesive layers provided on both sides. The embossing is formed by a large number of inverted quadrangular pyramid-shaped recesses, and the directions of the ridge lines of the inverted quadrangular pyramid that are orthogonal to each other are approximately aligned with the longitudinal and lateral directions of the synthetic resin film, and are arranged in a checkered pattern. It is characterized by becoming.
【０００７】請求項２に記載の易貼付性両面粘着テープ
は、合成樹脂フィルムとその両面に設けられた粘着剤層
に、エンボス加工が施されて凹部が形成され、該凹部に
上記合成樹脂フィルムとその両面の粘着剤層を貫通する
貫通孔が設けられてなることを特徴とするものである。
請求項３に記載の再剥離性両面粘着テープの製造方法
は、一面に粘着剤層が設けられた合成樹脂フィルムの他
面に、多数の四角錐状の凸部が、該四角錐の相互に直交
する稜線の方向が該合成樹脂フィルムの縦横方向にほゞ
一致し、且つ市松状に配列されたエンボスロールによっ
てエンボスを施すと共に、該四角錐状の凸部の先端部に
よって該合成樹脂フィルムに貫通孔を設け、次いで該合
成樹脂フィルムの面方向に圧力をかけて、該粘着剤の一
部を該貫通孔を通過せしめ、他面に露出させることを特
徴とする方法である。In the easily attachable double-sided pressure-sensitive adhesive tape according to claim 2, the synthetic resin film and the pressure-sensitive adhesive layers provided on both sides thereof are embossed to form a concave portion, and the synthetic resin film is formed in the concave portion. And through holes penetrating the pressure-sensitive adhesive layers on both sides thereof.
The method for producing a removable double-sided pressure-sensitive adhesive tape according to claim 3, wherein a large number of quadrangular pyramid-shaped projections are provided on the other surface of the synthetic resin film having an adhesive layer provided on one surface thereof. The directions of the ridges that are orthogonal to each other are approximately the same as the longitudinal and lateral directions of the synthetic resin film, and embossing is performed by embossing rolls arranged in a checkered pattern, and the synthetic resin film is formed by the tips of the convex portions of the quadrangular pyramid shape. A method is characterized in that a through hole is provided, and then pressure is applied in the surface direction of the synthetic resin film to allow a part of the adhesive to pass through the through hole and be exposed on the other surface.
【０００８】請求項１記載の発明で使用される合成樹脂
フィルムとしては、中低圧ポリエチレン、高圧ポリエチ
レン、線状低密度ポリエチレン、ポリプロピレン、エチ
レン−酢酸ビニル共重合体等のポリオレフィン樹脂、或
いはこれらの２種以上の混合物、軟質塩化ビニル樹脂、
ボリアミド樹脂等、一般にフィルムもしくはシートとし
て使用されているものが挙げられる。The synthetic resin film used in the invention of claim 1 is a medium or low pressure polyethylene, a high pressure polyethylene, a linear low density polyethylene, polypropylene, a polyolefin resin such as an ethylene-vinyl acetate copolymer, or 2 of these. Mixtures of more than one kind, soft vinyl chloride resin,
Examples thereof include those generally used as a film or sheet such as polyimide resin.
【０００９】上記合成樹脂フィルムの片面全面には凹部
からなるエンボス加工が施される。該エンボスは多数の
逆四角錐状の凹部として形成されたものであるが、この
形状は底辺が正方形の逆正四角錐、または底辺が菱形の
逆四角錐のいずれでもよい。該エンボスの大きさは、逆
四角錐の底辺における対角線の長さで０．０５ｍｍ〜１
０ｍｍ程度が好ましい。又、各エンボスの大きさは揃っ
たものが好ましい。The entire surface of one side of the synthetic resin film is embossed with a recess. The embossing is formed as a large number of inverted quadrangular pyramid-shaped recesses, and this shape may be either an inverted regular quadrangular pyramid with a square base or an inverted quadrangular pyramid with a rhombus base. The size of the emboss is 0.05 mm to 1 in terms of the length of the diagonal line at the base of the inverted quadrangular pyramid.
About 0 mm is preferable. Further, it is preferable that the embosses have the same size.
【００１０】エンボスはそれぞれ逆四角錐の相互に直交
する稜線の方向がフィルムの縦横方向、即ち幅方向と長
手方向にほゞ一致され、且つ市松状に配列される。従っ
て、各逆四角錐の底辺の角部同士が近接するか又は接
し、それぞれの稜線は断続する又は連続する直線状に並
べられる。フィルムの一端部でエンボスの一つが裂かれ
ると、フィルムの肉薄部分即ちエンボスの稜線に沿って
裂開が進められる。隣接するエンボスの稜線は断続する
又は連続する直線状に並んでいるので、次々と逆四角錐
の稜線に沿ってフィルムは直線状に裂開される。 従っ
て、延伸加工により分子配向されたフィルムでも、延伸
方向と直角方向へ容易に手で切り取ることができる。The embossing is such that the directions of the ridges of the inverted quadrangular pyramids that are orthogonal to each other are substantially aligned with the longitudinal and lateral directions of the film, that is, the width direction and the longitudinal direction, and are arranged in a checkered pattern. Therefore, the bottom corners of each inverted quadrangular pyramid are close to or in contact with each other, and their ridge lines are arranged in a continuous or continuous straight line. If one of the embosses is torn at one end of the film, the tear will proceed along the thinned portion of the film, or the ridge of the emboss. Since the ridgelines of adjacent embossments are arranged in a continuous or continuous straight line, the film is linearly torn along the ridgelines of the inverted quadrangular pyramid. Therefore, even a film molecularly oriented by stretching can be easily cut by hand in the direction perpendicular to the stretching direction.
【００１１】又、エンボスは市松状に配列されているの
で、逆四角錐の底辺の外側はエンボス加工されない元の
厚みのフィルムであり、エンボス同士が近接するか又は
接する部分から裂開が他の部分に広がるおそれがない。Further, since the embosses are arranged in a checkered pattern, the outer side of the base of the inverted quadrangular pyramid is a film of the original thickness that is not embossed, and the delamination occurs from the portion where the embosses are close to or in contact with each other. There is no danger of spreading to parts.
【００１２】上記のように逆四角錐状にエンボスするに
は、四角錐がその底辺を接して多数並べられたような凸
部を有するエンボスロールによって行われるが、該四角
錐の高さを比較的低くしておき、その底辺の部分までエ
ンボスするようにすると、得られた逆四角錐状のエンボ
スは、各逆四角錐の底辺の角部同士が接し、それぞれの
稜線は連続する直線状に並ぶ。一方、該四角錐の高さを
高くし、その頂点から底辺までの間の部分までエンボス
するようにすると、得られた逆四角錐状のエンボスは、
各逆四角錐の底辺の角部同士が近接し、それぞれの稜線
は断続する直線状に並ぶ。To emboss in the shape of an inverted quadrangular pyramid as described above, an embossing roll having a convex portion in which a plurality of quadrangular pyramids are arranged in contact with their bases is used, and the heights of the quadrangular pyramids are compared. When the embossing of the inverse quadrangular pyramid shape is made so that the bottom part of each inverse quadrangular pyramid is in contact with each other, the ridge lines are continuous straight lines. line up. On the other hand, when the height of the quadrangular pyramid is increased so that the portion between the apex and the base is embossed, the obtained inverse quadrangular pyramid-shaped embossment is
The bottom corners of each inverted quadrangular pyramid are close to each other, and their ridges are arranged in a continuous straight line.
【００１３】又、上記手切れ性合成樹脂フィルムのエン
ボス加工面の両面には、粘着剤層が設けられている。粘
着剤層に使用される粘着剤としては、通常の両面粘着テ
ープもしくはシートとして使用されているものが適用で
き、例えばアクリル系粘着剤、ゴム系粘着剤が挙げられ
る。An adhesive layer is provided on both sides of the embossed surface of the hand-cuttable synthetic resin film. As the pressure-sensitive adhesive used for the pressure-sensitive adhesive layer, those used as a usual double-sided pressure-sensitive adhesive tape or sheet can be applied, and examples thereof include an acrylic pressure-sensitive adhesive and a rubber-based pressure-sensitive adhesive.
【００１４】上記手切れ性両面粘着テープの製造方法
は、合成樹脂フィルムのみをエンボス加工を施して手切
れ性とした後、その両面に粘着剤層を積層させてもよい
が、合成樹脂フィルムの片面に粘着剤層を積層した後、
合成樹脂フィルム層にエンボス加工を施して手切れ性と
した後、そのエンボス面に粘着剤層を積層させて両面粘
着テープとしてもよい。In the method for producing the above-mentioned hand-cuttable double-sided pressure-sensitive adhesive tape, only the synthetic resin film may be embossed to make it hand-tearable, and then the pressure-sensitive adhesive layer may be laminated on both sides thereof. After laminating the adhesive layer on one side,
The synthetic resin film layer may be embossed to make it hand-tearable, and then an adhesive layer may be laminated on the embossed surface to form a double-sided adhesive tape.
【００１５】請求項２記載の易貼付性両面粘着テープに
使用される合成樹脂フィルム及び粘着剤としては、請求
項１記載のものと同様である。The synthetic resin film and the pressure-sensitive adhesive used in the easily attachable double-sided pressure-sensitive adhesive tape according to claim 2 are the same as those described in claim 1.
【００１６】請求項２記載の両面粘着テープは、合成樹
脂フィルムとその両面に設けられた粘着剤層に、エンボ
ス加工が施される。該エンボスは凹部が形成されるもの
であれば、特に限定されないが、例えば、逆多角錐や逆
円錐形状等が挙げられる。特に、請求項１記載のものと
同様な逆四角錐状の凹部であれば、手切れ性も付与され
るのでより好ましい。In the double-sided pressure-sensitive adhesive tape according to the second aspect, the synthetic resin film and the pressure-sensitive adhesive layers provided on both sides thereof are embossed. The emboss is not particularly limited as long as it forms a recess, and examples thereof include an inverted polygonal pyramid and an inverted conical shape. In particular, an inverted quadrangular pyramid-shaped recess similar to that of the first aspect is more preferable because hand-cutability is also imparted.
【００１７】請求項２記載の両面粘着テープは、上記の
凹部に、更に合成樹脂フィルムとその両面の粘着剤層を
貫通する孔が設けられる。孔の形状は、円形状、菱形
状、四角形状、三角形状等、種々の形状が可能である
が、その大きさは、直径又は長辺の長さが３０〜３００
μｍが好ましい。孔の大きさが小さくなると、貼付時に
被着体とテープの間に空気が入り易くなり、大きくなる
と両面粘着テープの強度が低下する。In the double-sided pressure-sensitive adhesive tape according to the second aspect, the recess is further provided with holes penetrating the synthetic resin film and the pressure-sensitive adhesive layers on both sides thereof. The shape of the hole can be various shapes such as a circular shape, a rhombus shape, a quadrangular shape, and a triangular shape, and the size thereof is 30 to 300 in diameter or long side length.
μm is preferred. When the size of the pores is small, air easily enters between the adherend and the tape at the time of sticking, and when the size is large, the strength of the double-sided pressure-sensitive adhesive tape decreases.
【００１８】上記の易貼付性両面粘着テープの製造方法
は、合成樹脂フィルムの両面に粘着剤層を設け、さらに
該粘着剤層の表面に剥離紙を積層したものに、突起を有
する凸部が形成されたエンボスロールを使用して、エン
ボス加工を施し、エンボスの付与と同時に該突起によっ
て、合成樹脂フィルムとその両面の粘着剤層を貫通する
孔を開ける方法が挙げられる。上記の突起を有する凸部
が形成されたエンボスロールとしては、多角錐や円錐形
状等の凸部が形成されたものが好ましく、これらは、突
起となる尖った頂点を有するので、その突起によって貫
通孔を開けることができる。In the above-mentioned method for producing an easily attachable double-sided adhesive tape, a pressure-sensitive adhesive layer is provided on both sides of a synthetic resin film, and a release paper is laminated on the surface of the pressure-sensitive adhesive layer, and a convex portion having protrusions is formed. There is a method in which embossing is performed using the formed embossing roll, and at the same time when the embossing is applied, holes are formed by the projections to penetrate the synthetic resin film and the pressure-sensitive adhesive layers on both sides thereof. The embossing roll on which the convex portion having the above-mentioned projection is formed is preferably one having a convex portion such as a polygonal pyramid or a cone shape, and these have a pointed apex to be a projection, so that they are penetrated by the projection. You can make holes.
【００１９】請求項３記載の再剥離性両面粘着テープの
製造方法に使用される合成樹脂フィルムとしては、請求
項１記載のものと同様である。The synthetic resin film used in the method for producing the removable double-sided pressure-sensitive adhesive tape according to claim 3 is the same as that according to claim 1.
【００２０】請求項３記載の再剥離性両面粘着テープの
製造方法に使用される粘着剤としては、やや流動性が高
いものが好ましく、例えば、架橋剤を使用しないか又は
架橋剤の使用量を通常よりも低くしたアクリル系粘着剤
（マクロモノマータイプも含む）又はゴム系粘着剤が好
ましい。アクリル系粘着剤としては、例えば、綜研化学
社製、商品名：Ｓ−５９が挙げられ、マクロモノマータ
イプのアクリル系粘着剤としては、例えば、綜研化学社
製、商品名：ＳＫ−１６９７が挙げられる。The pressure-sensitive adhesive used in the method for producing the removable double-sided pressure-sensitive adhesive tape according to claim 3 preferably has a slightly high fluidity. For example, no crosslinking agent is used or the amount of the crosslinking agent used is Acrylic pressure-sensitive adhesives (including macromonomer type) or rubber-based pressure-sensitive adhesives that are lower than usual are preferable. Examples of acrylic adhesives include Soken Chemical Co., Ltd., trade name: S-59, and examples of macromonomer type acrylic adhesives include Soken Chemical Co., Ltd., trade name: SK-1697. To be
【００２１】請求項３記載の再剥離性両面粘着テープの
製造方法は、まず、一面に粘着剤層が設けられた合成樹
脂フィルムの他面に、多数の四角錐状の凸部が、該四角
錐の相互に直交する稜線の方向が該合成樹脂フィルムの
縦横方向にほゞ一致し、且つ市松状に配列されたエンボ
スロールによってエンボスを施すと共に、該四角錐状の
凸部の頂点部によって該合成樹脂フィルムに貫通孔を設
ける。In the method for producing a removable double-sided pressure-sensitive adhesive tape according to claim 3, first, a large number of quadrangular pyramid-shaped projections are formed on the other surface of the synthetic resin film having a pressure-sensitive adhesive layer provided on one surface thereof. The directions of the ridges orthogonal to each other of the pyramids substantially match the longitudinal and lateral directions of the synthetic resin film, and embossing is performed by embossing rolls arranged in a checkered pattern, and the apex portions of the quadrangular pyramid-shaped convex portions Through holes are provided in the synthetic resin film.
【００２２】上記の四角錐としては、底辺が正方形の正
四角錐、または底辺が菱形の四角錐のいずれでもよい。
該四角錐の大きさは、四角錐の底辺における対角線の長
さで０．５ｍｍ〜１０ｍｍ程度が好ましく、四角錐の高
さは、合成樹脂フィルムの厚みよりも高ければよい。The quadrangular pyramid may be a regular quadrangular pyramid having a square base or a rhomboidal quadrangular pyramid.
The size of the quadrangular pyramid is preferably about 0.5 mm to 10 mm in terms of the length of the diagonal line at the base of the quadrangular pyramid, and the height of the quadrangular pyramid may be higher than the thickness of the synthetic resin film.
【００２３】この貫通孔は、ほゞ円形となるが、その直
径は３０〜３００μｍが好ましい。貫通孔の直径が小さ
くなると、粘着剤が貫通孔を通過しにくくなり、大きく
なると両面粘着テープの強度が低下する。The through-hole has a substantially circular shape, and its diameter is preferably 30 to 300 μm. When the diameter of the through hole is small, it becomes difficult for the pressure-sensitive adhesive to pass through the through hole, and when it is large, the strength of the double-sided pressure-sensitive adhesive tape is reduced.
【００２４】次いで該合成樹脂フィルムの面方向に圧力
をかけて、該粘着剤の一部を該貫通孔を通過せしめ、他
面に露出させる。上記の圧力は１０ｇ重／ｃｍ2 以上が
好ましい。なお、この粘着剤の移動に際して、温度は常
温でもよいが、加熱した方が移動が促進される。この加
熱温度は４０〜８０℃が好ましく、加熱時間は１〜７２
時間が好ましい。Then, pressure is applied in the surface direction of the synthetic resin film to allow a part of the adhesive to pass through the through hole and to be exposed on the other surface. The above pressure is preferably 10 g weight / cm 2 or more. The pressure of the pressure-sensitive adhesive may be room temperature, but heating the pressure-sensitive adhesive accelerates the movement. The heating temperature is preferably 40 to 80 ° C, and the heating time is 1 to 72
Time is preferred.
【００２５】[0025]
【作用】請求項１記載の手切れ性両面粘着テープにおい
ては、フィルムの一端縁でエンボスの一つが裂かれる
と、隣接するエンボスの稜線は断続する又は連続する直
線状に並んでいるので、フィルムの肉薄部分即ちエンボ
スの逆四角錐の稜線に沿って裂開が進められ、次々と逆
四角錐の稜線に沿ってフィルムは縦横いずれの方向へで
も直線状に裂開される。又、エンボスは市松状に配列さ
れているので、逆四角錐の底辺の外側はエンボス加工さ
れない元の厚みのフィルムであり、エンボス同士が近接
するか又は接する部分から裂開が他の部分に広がるおそ
れがない。延伸加工により分子配向されたフィルムで
も、延伸方向と直角方向へ容易に手で切り取ることがで
きる。In the double-sided self-cutting adhesive tape according to claim 1, when one of the embosses is torn at one edge of the film, the ridge lines of adjacent embosses are arranged in a continuous or continuous straight line. Cleavage proceeds along the ridgeline of the inverted quadrangular pyramid of the embossed portion, that is, along the ridgeline of the inverted quadrangular pyramid, and the film is linearly cleaved in either the vertical or horizontal direction. In addition, since the embosses are arranged in a checkerboard pattern, the outer side of the base of the inverted quadrangular pyramid is the film of the original thickness that is not embossed, and the tear spreads from the part where the embosses are close to or in contact with each other to the other part. There is no fear. Even a film molecularly oriented by stretching can be easily cut by hand in the direction perpendicular to the stretching direction.
【００２６】請求項２記載の易貼付性両面粘着テープに
おいては、被着体に貼付する際に、被着体と該テープの
間に入った空気が、凹部に設けられた、合成樹脂フィル
ムとその両面の粘着剤層を貫通する貫通孔から排出され
得るので、貼付時に空気の巻き込みが防止される。In the easily attachable double-sided pressure-sensitive adhesive tape according to claim 2, when the tape is adhered to an adherend, the air entered between the adherend and the tape is a synthetic resin film provided in the recess. Since it can be discharged from the through-holes that penetrate the pressure-sensitive adhesive layers on both sides thereof, entrapment of air at the time of sticking is prevented.
【００２７】請求項３記載の再剥離性両面粘着テープの
製造方法によると、一面に粘着剤層が設けられた合成樹
脂フィルムの、合成樹脂フィルム面にエンボスを施して
逆四角錐状のエンボス部を形成すると共に、貫通孔をあ
け、次いで合成樹脂フィルムの面方向に圧力をかけるこ
とにより、貫通孔を粘着剤が通過して、逆四角錐状のエ
ンボス部に粘着剤が満たされ、両面粘着テープとなる。
得られた両面粘着テープは、片面は全面が粘着剤で覆わ
れるので強い粘着層となり、他面は逆四角錐状のエンボ
ス部のみが粘着剤で満たされるので弱い粘着層となるの
で、再剥離性両面粘着テープとして好適なものとなる。According to the method for producing a removable double-sided pressure-sensitive adhesive tape according to claim 3, the synthetic resin film having an adhesive layer on one surface is embossed on the surface of the synthetic resin film to form an inverted quadrangular pyramid-shaped embossed portion. By forming a through hole and then applying pressure in the surface direction of the synthetic resin film, the adhesive passes through the through hole, and the embossed part of the inverted quadrangular pyramid is filled with the adhesive and double-sided adhesive It becomes a tape.
The obtained double-sided pressure-sensitive adhesive tape has a strong adhesive layer on one side because the entire surface is covered with the pressure-sensitive adhesive, and a weak pressure-sensitive adhesive layer on the other side because only the inverted quadrangular pyramid-shaped embossed portion is filled with the pressure-sensitive adhesive, so it is removable again. It becomes suitable as a double-sided adhesive tape.
【００２８】[0028]
【実施例】次に、請求項１〜３の発明の実施例を図面を
参照して説明する。以下の実施例１と比較例１、２は、
請求項１記載の手切れ性両面粘着テープ、実施例２と比
較例３は、請求項２記載の易貼付性両面粘着テープ、実
施例３は、請求項３記載の再剥離性両面粘着テープの製
造方法に関するものである。 （実施例１）図１は請求項１記載の手切れ性両面粘着テ
ープ１の実施例を示す断面図であり、厚み１２０μm の
ポリエチレンフィルム２０（積菱包装社製 商品名：Ｐ
Ｅ−１２）に逆正四角錐状のエンボスが施されており、
２１は凹部を示し、２２と２３は稜線を示している。そ
して、エンボスされたポリエチレンフィルム２０の両面
にアクリル系感圧性粘着剤層４、４がそれぞれ４０μｍ
ずつ設けられ、更に該感圧性粘着剤層４のうちエンボス
面の反対側の感圧性粘着剤層４に両面剥離紙５が積層さ
れてなる。Embodiments of the present invention will be described below with reference to the drawings. The following Example 1 and Comparative Examples 1 and 2 are
The double-sided self-adhesive double-sided adhesive tape according to claim 1, Example 2 and Comparative example 3 are the easily attachable double-sided adhesive tape according to claim 2, and Example 3 is the removable double-sided adhesive tape according to claim 3. The present invention relates to a manufacturing method. (Example 1) FIG. 1 is a cross-sectional view showing an example of the double-sided self-adhesive pressure-sensitive adhesive tape 1 according to claim 1, which is a polyethylene film 20 having a thickness of 120 μm (trade name: P manufactured by Sekiryo Co., Ltd.
E-12) is embossed with an inverted regular pyramid shape,
Reference numeral 21 indicates a concave portion, and 22 and 23 indicate ridge lines. Acrylic pressure-sensitive adhesive layers 4 and 4 are 40 μm on both sides of the embossed polyethylene film 20.
And a double-sided release paper 5 is laminated on the pressure-sensitive adhesive layer 4 on the opposite side of the embossed surface of the pressure-sensitive adhesive layer 4.
【００２９】図２は上記の手切れ性両面粘着テープ１に
使用されるエンボスされた合成樹脂フィルム２の一部を
示す平面図であり、厚み１２０μm のポリエチレンフィ
ルム２０の一面に、１個のエンボスが逆正四角錐状の凹
部２１からなるエンボス加工が施されてなる。該凹部２
１の大きさは逆正四角錐の底辺の対角線が約１００μｍ
であり、深さが約８０μm である。このような凹部２１
が逆正四角錐の稜線２２、２３の直交方向、即ち稜線２
２を該ポリエチレンフィルム２０の縦方向Ｙ−Ｙに、稜
線２３を横方向Ｘ−Ｘに一致させて市松状に配列されて
なる。また、２４はフィルムのエンボス加工されていな
い平坦面である。FIG. 2 is a plan view showing a part of the embossed synthetic resin film 2 used for the above-mentioned hand-cuttable double-sided adhesive tape 1. One embossed film is provided on one side of a polyethylene film 20 having a thickness of 120 μm. Is embossed with a concave portion 21 having an inverse regular quadrangular pyramid shape. The recess 2
The size of 1 is about 100 μm on the diagonal of the base of the inverted regular pyramid.
And the depth is about 80 μm. Such a recess 21
Is the orthogonal direction of the ridge lines 22 and 23 of the inverted regular pyramid, that is, the ridge line 2
2 are aligned in the vertical direction YY of the polyethylene film 20, and the ridge lines 23 are aligned in the horizontal direction XX, and are arranged in a checkered pattern. Further, 24 is a flat surface of the film which is not embossed.
【００３０】この手切れ性両面粘着テープ１は以下のよ
うにして作製される。図３は直径２８０ｍｍのエンボス
ロール３表面の一部を拡大して示す平面図であり、該表
面には、底辺の対角線３２、３３の長さが各１ｍｍで、
頂点の高さが８００μｍの正四角錐からなる凸部３１が
対角線の一つ３３を該エンボスロール３の軸方向Ａ−Ａ
に一致させて市松状に配列されてなり、エンボスロール
３表面近くに内蔵された加熱部により、表面温度が１２
５〜１３０℃に加熱されている。また、３４はエンボス
ロールの凸部のない平坦部である。The hand-cut double-sided pressure-sensitive adhesive tape 1 is manufactured as follows. FIG. 3 is a plan view showing, on an enlarged scale, a part of the surface of the embossing roll 3 having a diameter of 280 mm, in which the lengths of the diagonal lines 32 and 33 of the base are 1 mm each,
The protrusion 31 made of a regular quadrangular pyramid having a vertex height of 800 μm forms one diagonal line 33 in the axial direction AA of the embossing roll 3.
Are arranged in a checkered pattern so that the surface temperature of the embossing roll 3 is 12
It is heated to 5 to 130 ° C. Moreover, 34 is a flat part without a convex part of an embossing roll.
【００３１】図４は上記の手切れ性両面粘着テープ１の
製造方法を説明するための説明図である。両面剥離紙５
の片面にアクリル系粘着剤（固形分４０％、綜研化学社
製商品名：Ｓ−５９）とイソシアネート系硬化剤（固形
分５５％、日本ポリウレタン工業社製 商品名：コロネ
ートＬ５５Ｅ）を、混合比１００：１にて混合した粘着
剤溶液を乾燥後の厚みが４０μｍとなるように塗布、乾
燥して粘着剤層４を形成し、該粘着剤層４に厚み１２０
μm のポリエチレンフィルム２０を貼り合わせて、片面
粘着テープ原反６を得た。FIG. 4 is an explanatory view for explaining a method of manufacturing the above-mentioned hand-cuttable double-sided adhesive tape 1. Double-sided release paper 5
Acrylic adhesive (solid content 40%, Soken Chemical Co., Ltd. trade name: S-59) and isocyanate curing agent (solid content 55%, Nippon Polyurethane Industry Co., Ltd. trade name: Coronate L55E) are mixed on one side of the mixture ratio. The pressure-sensitive adhesive solution mixed at 100: 1 was applied so that the thickness after drying was 40 μm, and dried to form the pressure-sensitive adhesive layer 4, and the pressure-sensitive adhesive layer 4 had a thickness of 120.
A polyethylene film 20 of μm was attached to obtain a single-sided adhesive tape raw material 6.
【００３２】得られた片面粘着テープ原反６を１０ｍ／
分で送りながら、図示しない加温装置により予め７０℃
に加温後、該片面粘着テープ原反６を上記エンボスロー
ル３表面にポリエチレンフィルム２０側が接触するよう
にして、約３０ｃｍの距離を圧接して軟化しながら送
り、該エンボスロール３面上でウレタンゴムからなるピ
ンチロール７によりエンボス深さが約８０μｍとなるよ
うに押圧してポリエチレンフィルム２０にエンボス加工
を施し、冷却ロール８を通過させた後巻き取ってエンボ
ス加工片面粘着テープ原反６を得た。The obtained single-sided pressure-sensitive adhesive tape raw sheet 6 was treated with 10 m /
While sending in minutes, 70 ℃ in advance by a heating device (not shown)
After heating, the single-sided adhesive tape raw fabric 6 is pressed and softened by a distance of about 30 cm so that the surface of the embossing roll 3 is in contact with the surface of the polyethylene film 20 and is fed. The polyethylene film 20 is embossed by pressing it with a pinch roll 7 made of rubber so that the embossing depth becomes about 80 μm, and after passing through a cooling roll 8, it is wound up to obtain an embossed single-sided adhesive tape raw fabric 6. It was
【００３３】一方、工程紙上に前記と同様にして、アク
リル系粘着剤層４を形成し、該粘着剤層４を上記のエン
ボス加工片面粘着テープ原反６のエンボス加工面に転写
し、手切れ性両面粘着テープ１を得た。On the other hand, the acrylic pressure-sensitive adhesive layer 4 is formed on the process paper in the same manner as described above, and the pressure-sensitive adhesive layer 4 is transferred to the embossed surface of the above-mentioned embossed single-sided adhesive tape raw sheet 6 and hand-cut. A double-sided pressure-sensitive adhesive tape 1 was obtained.
【００３４】（比較例１）実施例１におけるポリエチレ
ンフィルム２０の代わりに、不織布（厚み８２μｍ、坪
量３２ｇ／ｍ2 、デクスター三木社製 商品名：ＤＭ−
３８８２）を使用し、エンボス加工を施さなかったこと
の他は、実施例１と同様にして両面粘着テープを得た。Comparative Example 1 Instead of the polyethylene film 20 in Example 1, a nonwoven fabric (thickness 82 μm, basis weight 32 g / m 2 , manufactured by Dexter Miki Co., Ltd., trade name: DM-
3882) was used and no embossing was applied to obtain a double-sided pressure-sensitive adhesive tape in the same manner as in Example 1.
【００３５】（比較例２）エンボス加工を施さなかった
ことの他は、実施例１と同様にして両面粘着テープを得
た。Comparative Example 2 A double-sided pressure-sensitive adhesive tape was obtained in the same manner as in Example 1 except that embossing was not applied.
【００３６】性能評価 実施例１及び比較例１、２で得られた両面粘着テープを
用いて、以下の手切れ性試験を行った。 試験方法 試験方法を図５および図６に示した。テープを長手方向
（図５に矢印で示した方向）に沿って、幅２５ｍｍに切
断したものを試料１００とし、試料１００の幅方向の一
方の端部から３ｍｍまでの部分１０１に、補強用テープ
２００として幅２５ｍｍのテープを表裏両面から貼り合
わせ、次いで補強用テープ２００の長手方向のほぼ中央
部に、幅方向に向かって長さ２５ｍｍの切れ目２０１を
入れた（図５参照）。このようにして２分割した補強用
テープ２００の一方を引張試験機の上部チャックに、他
方を下部チャックに固定し、引張速度１０００ｍｍ／分
で試料１００を引き裂き（図６参照）、その時の負荷を
測定した。試験は繰り返し３回行い、その平均値をもっ
て手切れ性とした。 Performance Evaluation Using the double-sided pressure-sensitive adhesive tapes obtained in Example 1 and Comparative Examples 1 and 2, the following hand-cutting test was conducted. Test Method The test method is shown in FIGS. A sample 100 was obtained by cutting the tape along the longitudinal direction (direction indicated by an arrow in FIG. 5) to a width of 25 mm, and a reinforcing tape was applied to a portion 101 from one end of the sample 100 in the width direction to 3 mm. As the tape 200, a tape having a width of 25 mm was attached from both the front and back sides, and then a slit 201 having a length of 25 mm was made in the width direction at substantially the center in the longitudinal direction of the reinforcing tape 200 (see FIG. 5). One of the reinforcing tapes 200 thus divided into two was fixed to the upper chuck of the tensile tester and the other was fixed to the lower chuck, and the sample 100 was torn at a tensile speed of 1000 mm / min (see FIG. 6), and the load at that time was applied. It was measured. The test was repeated 3 times, and the average value was taken as the hand tearability.
【００３７】試験結果 実施例１の両面粘着テープの手切れ性は、８０ｇであ
り、比較例１、比較例２のものはそれぞれ１２０ｇ、３
９０ｇであった。また、切断面の形状は、実施例１の両
面粘着テープは、テープの長手方向に対して垂直に切断
されていたが（図７のＡ）、比較例１のものは、テープ
の切断開始部近傍だけは長手方向に対して垂直に切断さ
れていたが、他の部分は垂直に切断されず（図７の
Ｂ）、比較例２のものは、テープの切断開始部直後から
長手方向に対して垂直に切断されなかった（図７の
Ｃ）。Test Results The double-sided pressure-sensitive adhesive tape of Example 1 has a hand tearability of 80 g, and those of Comparative Examples 1 and 2 are 120 g and 3, respectively.
It was 90 g. Further, the shape of the cut surface was such that the double-sided pressure-sensitive adhesive tape of Example 1 was cut perpendicularly to the longitudinal direction of the tape (A in FIG. 7), but that of Comparative Example 1 was the cutting start portion of the tape. Only in the vicinity was cut perpendicularly to the longitudinal direction, but other parts were not cut perpendicularly (B in FIG. 7). Was not cut vertically (C in FIG. 7).
【００３８】（実施例２）図８は請求項２記載の易貼付
性両面粘着テープ９の実施例を示す断面図であり、厚み
１２０μm のポリエチレンフィルム２０（積菱包装社製
商品名：ＰＥ−１２）の両面に実施例１と同様の厚み
４０μｍのアクリル系感圧性粘着剤層４、４が設けら
れ、さらに該粘着剤層４、４の表面に剥離紙５、５が設
けられ、ポリエチレンフィルム２０とその両面のアクリ
ル系感圧性粘着剤層４、４及び一方の剥離紙５に、実施
例１と同様な逆正四角錐状のエンボスが施されている。
ただし、エンボスは、実施例１よりも、深くなされ、凹
部２１の先端部はアクリル系感圧性粘着剤層４を貫通
し、他方の剥離紙５の一部にまでおよび、粘着剤層４に
２００μｍの直径の円形の貫通孔４１が形成されてい
る。(Example 2) FIG. 8 is a sectional view showing an example of the easily-adhesive double-sided adhesive tape 9 according to claim 2, which is a polyethylene film 20 having a thickness of 120 μm (trade name: PE- manufactured by Sekiryo Packaging Co., Ltd.). 12) both sides of which are provided with acrylic pressure-sensitive adhesive layers 4 and 4 having a thickness of 40 μm as in Example 1, and release papers 5 and 5 are further provided on the surfaces of the adhesive layers 4 and 4 to form a polyethylene film. 20 and the acrylic pressure-sensitive adhesive layers 4 and 4 on both sides thereof and the release paper 5 on one side are embossed in the shape of an inverted regular pyramid as in Example 1.
However, the embossing was made deeper than in Example 1, and the tip of the concave portion 21 penetrated the acrylic pressure-sensitive adhesive layer 4 to reach a part of the other release paper 5 and the adhesive layer 4 had a thickness of 200 μm. A circular through hole 41 having a diameter of is formed.
【００３９】この易貼付性両面粘着テープ９は以下のよ
うにして作製された。図９は上記の易貼付性両面粘着テ
ープ９の製造方法を説明するための説明図である。剥離
紙５の離型面に実施例１と同様な粘着剤溶液を乾燥後の
厚みが４０μｍとなるように塗布、乾燥した後、厚み１
２０μm のポリエチレンフィルム２０と貼り合わせて、
片面粘着テープを得た。一方、別の剥離紙５の離型面に
上記と同じ粘着剤溶液を乾燥後の厚みが４０μｍとなる
ように塗布、乾燥した後、上記の片面粘着テープのポリ
エチレンフィルム２０の面を貼り合わせ、両面粘着テー
プ９１を得た。The easy-adhesive double-sided pressure-sensitive adhesive tape 9 was produced as follows. FIG. 9 is an explanatory view for explaining a method for manufacturing the above-mentioned easily attachable double-sided adhesive tape 9. A pressure-sensitive adhesive solution similar to that used in Example 1 was applied to the release surface of the release paper 5 so that the thickness after drying was 40 μm, and dried, and then the thickness 1
Stick it with a 20 μm polyethylene film 20,
A one-sided adhesive tape was obtained. On the other hand, the same adhesive solution as above is applied to the release surface of another release paper 5 so that the thickness after drying becomes 40 μm, and after drying, the surface of the polyethylene film 20 of the above single-sided adhesive tape is bonded, A double-sided adhesive tape 91 was obtained.
【００４０】得られた両面粘着テープ９１を１０ｍ／分
で送りながら、図示しない加温装置により予め７０℃に
加温後、該両面粘着テープ９１を実施例１と同様のエン
ボスロール３に、約３０ｃｍの距離を圧接して軟化しな
がら送り、該エンボスロール３面上で実施例１と同様の
ウレタンゴムからなるピンチロール７により押圧して両
面粘着テープ９１にエンボス加工と同時に貫通孔４１を
設け、冷却ロール８を通過させた後巻き取って易貼付性
両面粘着テープ９を得た。While feeding the obtained double-sided adhesive tape 91 at a rate of 10 m / min, the double-sided adhesive tape 91 was preheated to 70 ° C. by a heating device (not shown), and then the double-sided adhesive tape 91 was applied to the same embossing roll 3 as in Example 1. A distance of 30 cm is pressed and sent while softening, and pressed on the surface of the embossing roll 3 by a pinch roll 7 made of the same urethane rubber as in Example 1 to form a through hole 41 on the double-sided adhesive tape 91 at the same time as embossing. After passing through the cooling roll 8, it was wound up to obtain a double-sided pressure-sensitive adhesive tape 9 that was easily attached.
【００４１】（比較例３）エンボス加工を施さなかった
ことの他は、実施例２と同様にして両面粘着テープを得
た。Comparative Example 3 A double-sided pressure-sensitive adhesive tape was obtained in the same manner as in Example 2 except that embossing was not applied.
【００４２】性能評価 実施例２及び比較例３で得られた両面粘着テープを用い
て、以下の貼付性試験を行った。 試験方法 １００ｍｍ×１００ｍｍの両面粘着テープをガラス板に
手で貼付した。その後、該テープとガラス板の間に挟ま
れた空気部分の面積を測定し、下記の式により、空気存
在部面積率を求めた。 空気存在部面積率（％）＝〔空気部分の面積の総和／試
料面積〕×１００ 試験結果 空気存在部面積率（％）は、実施例２の両面粘着テープ
では、０％であり、比較例３の粘着テープでは、１０％
であった。 Performance Evaluation Using the double-sided pressure-sensitive adhesive tapes obtained in Example 2 and Comparative Example 3, the following stickability test was conducted. Test method A 100 mm x 100 mm double-sided adhesive tape was attached to a glass plate by hand. Then, the area of the air portion sandwiched between the tape and the glass plate was measured, and the area ratio of the air existing portion was calculated by the following formula. Air-existing part area ratio (%) = [sum of area of air part / sample area] × 100 test result The air-existing part area ratio (%) is 0% in the double-sided adhesive tape of Example 2, and is a comparative example. 10% with adhesive tape of 3
Met.
【００４３】（実施例３）両面剥離紙の片面に、アクリ
ル系粘着剤（固形分４０％、綜研化学社製 商品名：Ｓ
−５９）を乾燥後の厚みが４０μｍとなるように塗布、
乾燥して粘着剤層を形成し、該粘着剤層に厚み１２０μ
m のポリエチレンフィルム（コロナ処理度４０〜４５ダ
イン、積菱包装社製 商品名：ＰＥ−１２）を貼り合わ
せて、片面粘着テープ原反を得た。Example 3 An acrylic adhesive (solid content 40%, manufactured by Soken Chemical Co., Ltd., trade name: S on one side of double-sided release paper
-59) is applied so that the thickness after drying is 40 μm,
A pressure-sensitive adhesive layer is formed by drying, and the pressure-sensitive adhesive layer has a thickness of 120 μm.
A polyethylene film of m 2 (corona treatment degree 40 to 45 dyne, product name: PE-12 manufactured by Sekiryo Packing Co., Ltd.) was attached to obtain a single-sided adhesive tape raw fabric.
【００４４】図１０は再剥離性両面粘着テープ１０の製
造方法を説明するための説明図である。上記で得られた
片面粘着テープ原反６を１０ｍ／分で送りながら、図示
しない加温装置により予め７０℃に加温後、該片面粘着
テープ原反６を実施例１と同様のエンボスロール３の表
面にポリエチレンフィルム側が接触するようにして、約
３０ｃｍの距離を圧接して軟化しながら送り、該エンボ
スロール３面上で実施例１と同様のウレタンゴムからな
るピンチロール７により押圧して片面粘着テープ原反６
のポリエチレンフィルムにエンボス加工と同時に直径２
００μｍの略円形の貫通孔を設け、巻き取り後の応力が
８０ｇ重／ｃｍ2 となるような張力で巻き取り、次いで
６０℃で４８時間放置して再剥離性両面粘着テープ１０
を得た。FIG. 10 is an explanatory view for explaining a method of manufacturing the removable double-sided pressure-sensitive adhesive tape 10. The single-sided adhesive tape raw fabric 6 was heated at 70 ° C. in advance by a heating device (not shown) while sending the single-sided adhesive tape raw fabric 6 at 10 m / min. The surface of the polyethylene film is brought into contact with the surface of the polyethylene film, and is fed while being softened by pressing it at a distance of about 30 cm, and is pressed on the surface of the embossing roll 3 by the pinch roll 7 made of the same urethane rubber as in Example 1 to form one surface. Raw adhesive tape 6
Polyethylene film with a diameter of 2 at the same time as embossing
Removable double-sided pressure-sensitive adhesive tape 10 provided with a substantially circular through hole of 00 μm, wound with a tension such that the stress after winding was 80 gf / cm 2, and then left at 60 ° C. for 48 hours.
I got
【００４５】上記の再剥離性両面粘着テープ１０は、図
１１に示すように、両面剥離紙５に粘着剤層４とポリエ
チレンフィルム２０がこの順に積層され、ポリエチレン
フィルム２０に逆四角錐状のエンボスによる凹部２１が
施され、凹部２１の底部に貫通孔４１が形成されてお
り、該凹部２１中に粘着剤層４の粘着剤４ａの一部が充
填されていた。また、上記の再剥離性両面粘着テープ１
０は、エンボス面側からみると、図１２に示すように、
エンボスによる凹部２１の中に、粘着剤層４中の粘着剤
４ａが充填されていることが分かる。As shown in FIG. 11, the removable double-sided pressure-sensitive adhesive tape 10 comprises a double-sided release paper 5 on which the pressure-sensitive adhesive layer 4 and a polyethylene film 20 are laminated in this order, and the polyethylene film 20 is embossed in an inverted quadrangular pyramid shape. The through hole 41 is formed in the bottom of the recess 21, and the recess 21 is filled with a part of the adhesive 4a of the adhesive layer 4. In addition, the above-mentioned removable double-sided adhesive tape 1
0 is as shown in FIG. 12 when viewed from the embossed surface side.
It can be seen that the concave portion 21 formed by embossing is filled with the adhesive 4a in the adhesive layer 4.
【００４６】性能試験 実施例３で得られた再剥離性両面粘着テープを２５ｍｍ
幅に切断し、ＪＩＳＺ ０２３７に準拠して、試験板と
してステンレス板を用いて、粘着剤転写面とエンボス面
の、ステンレス板に対する１８０度引きはがし粘着力を
測定した。その結果、１８０度引きはがし粘着力は、粘
着剤転写面については、１０００ｇ／２５ｍｍであり、
エンボス面については、２００ｇ／２５ｍｍであった。 Performance test The releasable double-sided pressure-sensitive adhesive tape obtained in Example 3 was 25 mm.
The product was cut into widths, and in accordance with JISZ 0237, a stainless steel plate was used as a test plate, and the adhesive strength of the adhesive transfer surface and the embossed surface was peeled off from the stainless steel plate by 180 degrees, and the adhesive strength was measured. As a result, the 180-degree peeling adhesive force was 1000 g / 25 mm for the adhesive transfer surface,
The embossed surface was 200 g / 25 mm.
【００４７】[0047]
【発明の効果】請求項１記載の発明の手切れ性両面粘着
テープの構成は、上記の通りであり手切れ性両面粘着テ
ープの一端縁を手で破ると、その肉薄部分即ちエンボス
の逆四角錐の稜線に沿って裂開が進められ、エンボスの
稜線は断続する又は連続する直線状に並んでいるので、
フィルムは逆四角錐の稜線に沿って縦横いずれの方向へ
でも直線状に裂開される。又、エンボスは市松状に配列
されているので、逆四角錐の底辺の外側はエンボス加工
されない元の厚みのフィルムであり、エンボス同士が近
接するか又は接する部分から裂開が他の部分に広がるお
それがない。更に、配向性を有するフィルムでも道具を
用いずに、手で容易に且つ切り口を荒らさずに切り取る
ことができる。また、製造においてフィルムを延伸する
工程を必要としないので、能率的に製造することができ
る。The structure of the double-sided self-adhesive pressure-sensitive adhesive tape according to the first aspect of the invention is as described above. As the dehiscence progresses along the pyramid ridge, and the embossed ridges are arranged in a continuous or continuous straight line,
The film is linearly cleaved along the ridgeline of the inverted pyramid in any direction, vertical or horizontal. Also, since the embosses are arranged in a checkerboard pattern, the outer side of the base of the inverted quadrangular pyramid is the film of the original thickness that is not embossed, and the tear spreads from the part where the embosses are close to or in contact with each other. There is no fear. Further, even an oriented film can be easily cut by hand without using a tool and without roughening the cut end. Moreover, since the step of stretching the film is not required in the production, the production can be efficiently performed.
【００４８】請求項２記載の発明の易貼付性両面粘着テ
ープの構成は、上記の通りであり、被着体に貼付する際
に、該テープと被着体の間に入った空気が、凹部に設け
られた、合成樹脂フィルムとその両面の粘着剤層を貫通
する貫通孔から排出され得るので、貼付時に空気の巻き
込みが防止される。請求項３記載の発明の再剥離性両面
粘着テープの構成は、上記の通りであり、片面粘着テー
プの製造方法と同様の一工程塗布で、表裏２つの異なる
粘着力を有する両面粘着テープを得ることができる。従
って、製造工程が簡単となり、能率的に製造することが
できる。The structure of the easily attachable double-sided pressure-sensitive adhesive tape according to the second aspect of the present invention is as described above, and when the tape is adhered to an adherend, the air that has entered between the tape and the adherend is recessed. The air can be prevented from being entrapped at the time of sticking, because it can be discharged from the through-holes provided in the through hole penetrating the synthetic resin film and the pressure-sensitive adhesive layers on both surfaces thereof. The constitution of the removable double-sided pressure-sensitive adhesive tape according to claim 3 is as described above, and a double-sided pressure-sensitive adhesive tape having two different front and back adhesive strengths can be obtained by one-step application similar to the method for producing a single-sided pressure-sensitive adhesive tape. be able to. Therefore, the manufacturing process is simplified and the manufacturing can be performed efficiently.
【図１】請求項１記載の手切れ性両面粘着テープの実施
例を示す断面図。FIG. 1 is a cross-sectional view showing an embodiment of the hand-cuttable double-sided adhesive tape according to claim 1.
【図２】図１の手切れ性両面粘着テープに使用されるエ
ンボスされた合成樹脂フィルムの一部を示す平面図。FIG. 2 is a plan view showing a part of an embossed synthetic resin film used in the hand-cuttable double-sided adhesive tape of FIG.
【図３】エンボスロールの一部拡大平面図。FIG. 3 is a partially enlarged plan view of an embossing roll.
【図４】手切れ性両面粘着テープの製造方法を説明する
ための説明図。FIG. 4 is an explanatory diagram for explaining a method for manufacturing a double-sided adhesive tape that can be cut by hand.
【図５】手切れ性試験の方法を説明するための説明図。FIG. 5 is an explanatory diagram for explaining a method of a hand-cutability test.
【図６】手切れ性試験の方法を説明するための説明図。FIG. 6 is an explanatory diagram for explaining a method of a hand-cutability test.
【図７】切断面の形状を示す平面図。FIG. 7 is a plan view showing the shape of a cut surface.
【図８】易貼付性両面粘着テープの実施例を示す断面
図。FIG. 8 is a cross-sectional view showing an example of an easily attachable double-sided adhesive tape.
【図９】易貼付性両面粘着テープの製造方法を説明する
ための説明図。FIG. 9 is an explanatory diagram for explaining a method for manufacturing an easily attachable double-sided adhesive tape.
【図１０】再剥離性両面粘着テープの製造方法を説明す
るための説明図。FIG. 10 is an explanatory diagram for explaining a method for manufacturing a removable double-sided pressure-sensitive adhesive tape.
【図１１】再剥離性両面粘着テープの実施例を示す断面
図。FIG. 11 is a cross-sectional view showing an example of a removable double-sided pressure-sensitive adhesive tape.
【図１２】再剥離性両面粘着テープのエンボス面側から
みた平面図。FIG. 12 is a plan view of the removable double-sided pressure-sensitive adhesive tape as viewed from the embossed surface side.
１ 手切れ性両面粘着テープ ２ エンボスされた合成樹脂フィルム ３ エンボスロール ４ 粘着剤層 ４ａ 粘着剤 ５ 剥離紙 ６ 片面粘着テープ原反 ７ ピンチロール ８ 冷却ロール ９ 易貼付性両面粘着テープ １０ 再剥離性両面粘着テープ ２０ ポリエチレンフィルム ２１ 凹部 ２２、２３ 稜線 ２４ 平坦面 ３１ 凸部 ３２、３３ 対角線 ３４ 平坦部 ４１ 貫通孔 ９１ 両面粘着テープ 1 Hand-cut double-sided adhesive tape 2 Embossed synthetic resin film 3 Embossing roll 4 Adhesive layer 4a Adhesive 5 Release paper 6 Single-sided adhesive tape original 7 Pinch roll 8 Cooling roll 9 Easy-adhesive double-sided adhesive tape 10 Removable Double-sided adhesive tape 20 Polyethylene film 21 Recessed portions 22, 23 Ridge line 24 Flat surface 31 Convex portion 32, 33 Diagonal line 34 Flat portion 41 Through hole 91 Double-sided adhesive tape
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｊ 7/02 ＪＫＭ ＪＫＰ Ｂ２９Ｃ 59/04 Ｃ 9446−4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location C09J 7/02 JKM JKP B29C 59/04 C 9446-4F
Claims (3)
樹脂フィルムの両面に粘着剤層が設けられてなる両面粘
着テープであって、該エンボスは多数の逆四角錐状の凹
部で形成され、該逆四角錐の相互に直交する稜線の方向
が該合成樹脂フィルムの縦横方向にほゞ一致され、且つ
市松状に配列されてなることを特徴とする手切れ性両面
粘着テープ。1. A double-sided pressure-sensitive adhesive tape comprising a synthetic resin film, one surface of which is embossed, and pressure-sensitive adhesive layers provided on both surfaces, wherein the embossment is formed of a large number of inverted quadrangular pyramid-shaped recesses, A hand-cut double-sided pressure-sensitive adhesive tape, characterized in that the directions of the ridge lines of the inverted quadrangular pyramid that are orthogonal to each other are substantially aligned with the longitudinal and lateral directions of the synthetic resin film, and are arranged in a checkered pattern.
た粘着剤層に、エンボス加工が施されて凹部が形成さ
れ、該凹部に上記合成樹脂フィルムとその両面の粘着剤
層を貫通する貫通孔が設けられてなることを特徴とする
易貼付性両面粘着テープ。2. A synthetic resin film and a pressure-sensitive adhesive layer provided on both sides thereof are embossed to form recesses, and the recesses penetrate through the synthetic resin film and the pressure-sensitive adhesive layers on both sides thereof. An easily-adhesive double-sided pressure-sensitive adhesive tape characterized by being provided with.
ィルムの他面に、多数の四角錐状の凸部が、該四角錐の
相互に直交する稜線の方向が該合成樹脂フィルムの縦横
方向にほゞ一致し、且つ市松状に配列されたエンボスロ
ールによってエンボスを施すと共に、該四角錐状の凸部
の先端部によって該合成樹脂フィルムに貫通孔を設け、
次いで該合成樹脂フィルムの面方向に圧力をかけて、該
粘着剤の一部を該貫通孔を通過せしめ、他面に露出させ
ることを特徴とする再剥離性両面粘着テープの製造方
法。3. A synthetic resin film having a pressure-sensitive adhesive layer provided on one surface thereof, and a plurality of pyramid-shaped projections on the other surface of the synthetic resin film. The embossing rolls are substantially aligned with each other and are arranged in a checkerboard pattern, and the synthetic resin film is provided with through holes by the tip portions of the quadrangular pyramid-shaped projections.
Then, a pressure is applied in the surface direction of the synthetic resin film to allow a part of the adhesive to pass through the through hole and to be exposed on the other surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18711294A JPH0848951A (en) | 1994-08-09 | 1994-08-09 | Production of tearable double-coated self-adhesive tape, easily stickable double-coated self-adhesive tape, and peelable double-coated self-adhesive tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18711294A JPH0848951A (en) | 1994-08-09 | 1994-08-09 | Production of tearable double-coated self-adhesive tape, easily stickable double-coated self-adhesive tape, and peelable double-coated self-adhesive tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0848951A true JPH0848951A (en) | 1996-02-20 |
Family
ID=16200319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18711294A Pending JPH0848951A (en) | 1994-08-09 | 1994-08-09 | Production of tearable double-coated self-adhesive tape, easily stickable double-coated self-adhesive tape, and peelable double-coated self-adhesive tape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0848951A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001044398A1 (en) * | 1999-12-14 | 2001-06-21 | 3M Innovative Properties Company | Embossed film having controlled tear |
| FR2870007A1 (en) * | 2004-05-10 | 2005-11-11 | Saint Gobain | TRANSPARENT SHEET TEXTURED WITH INCLINED PYRAMIDAL PATTERNS |
| JP2006169415A (en) * | 2004-12-17 | 2006-06-29 | Fujicopian Co Ltd | Adhesive layer transfer tape and transferring tool for adhesive layer transfer tape |
| JP2013100465A (en) * | 2011-10-20 | 2013-05-23 | Nitto Denko Corp | Double-sided adhesive tape |
| JP2015048430A (en) * | 2013-09-03 | 2015-03-16 | 日東電工株式会社 | Double-sided adhesive tape |
| US9085121B2 (en) | 1999-05-13 | 2015-07-21 | 3M Innovative Properties Company | Adhesive-backed articles |
| TWI667317B (en) * | 2014-03-04 | 2019-08-01 | 美商3M新設資產公司 | Cover tapes and assemblies and methods for making |
-
1994
- 1994-08-09 JP JP18711294A patent/JPH0848951A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9085121B2 (en) | 1999-05-13 | 2015-07-21 | 3M Innovative Properties Company | Adhesive-backed articles |
| WO2001044398A1 (en) * | 1999-12-14 | 2001-06-21 | 3M Innovative Properties Company | Embossed film having controlled tear |
| US6432527B1 (en) | 1999-12-14 | 2002-08-13 | 3M Innovative Properties Company | Embossed film having controlled tear |
| JP2003516889A (en) * | 1999-12-14 | 2003-05-20 | スリーエム イノベイティブ プロパティズ カンパニー | Embossed film with controlled tearing |
| JP4668502B2 (en) * | 1999-12-14 | 2011-04-13 | スリーエム イノベイティブ プロパティズ カンパニー | Embossed film with controlled tearing |
| FR2870007A1 (en) * | 2004-05-10 | 2005-11-11 | Saint Gobain | TRANSPARENT SHEET TEXTURED WITH INCLINED PYRAMIDAL PATTERNS |
| WO2005111670A1 (en) * | 2004-05-10 | 2005-11-24 | Saint-Gobain Glass France | Textured transparent film having pyramidal patterns that can be associated with photovoltaic cells |
| KR101381749B1 (en) * | 2004-05-10 | 2014-04-08 | 쌩-고벵 글래스 프랑스 | Transparent plate, assembly comprising the transparent plate, device for conversing light energy into electrical energy, and process for manufacturing the transparent plate |
| JP2006169415A (en) * | 2004-12-17 | 2006-06-29 | Fujicopian Co Ltd | Adhesive layer transfer tape and transferring tool for adhesive layer transfer tape |
| JP2013100465A (en) * | 2011-10-20 | 2013-05-23 | Nitto Denko Corp | Double-sided adhesive tape |
| JP2015048430A (en) * | 2013-09-03 | 2015-03-16 | 日東電工株式会社 | Double-sided adhesive tape |
| TWI667317B (en) * | 2014-03-04 | 2019-08-01 | 美商3M新設資產公司 | Cover tapes and assemblies and methods for making |
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