JP4841107B2 - Adhesive processing sheet - Google Patents
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- JP4841107B2 JP4841107B2 JP2003356011A JP2003356011A JP4841107B2 JP 4841107 B2 JP4841107 B2 JP 4841107B2 JP 2003356011 A JP2003356011 A JP 2003356011A JP 2003356011 A JP2003356011 A JP 2003356011A JP 4841107 B2 JP4841107 B2 JP 4841107B2
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本発明は、ステッカー、ラベルなどに用いる粘着加工シートに関する。 The present invention relates to an adhesive processed sheet used for stickers, labels, and the like.
従来の粘着加工シートは、シート基材に粘着剤層を平坦に設けて形成された粘着加工シートと、その平坦な粘着剤層上に貼合された剥離シートから構成されている。剥離シートの剥離処理面は通常平坦になっており、剥離シートを剥がして粘着加工シートの粘着剤層面を被着体に貼り、使用するものである。 A conventional pressure-sensitive adhesive sheet is composed of a pressure-sensitive adhesive sheet formed by providing a flat pressure-sensitive adhesive layer on a sheet base material, and a release sheet bonded onto the flat pressure-sensitive adhesive layer. The release treatment surface of the release sheet is usually flat, and the release sheet is peeled off and the adhesive layer surface of the adhesive processed sheet is attached to the adherend for use.
このような粘着加工シートは、粘着加工シートと被着体との間に空気を巻き込むことが多く、空気溜まり部分がフクレとなり、貼り付けた粘着加工シートの表面側に凸部が生じ、著しく外観を損ねるという問題があった。この問題は特に粘着加工シートの面積が大きい場合に、あるいは被着体の表面が平滑である場合に顕著であった。
また、被着体がプラスチック（ポリカーボネート、アクリル、発泡ポリスチレン樹脂等）製である場合、経時でプラスチック表面からガスが発生して粘着加工シートにフクレが発生することがあった。
上記のような問題を解決するために、特許文献１、特許文献２などに、これまでに様々な粘着加工シートが提案されている。しかしそれらの技術は通常の粘着加工シートよりも生産性が劣り、コスト高であった。
そこで本発明は、上述の問題を解決して貼着時または貼着後にフクレを生じることがなく、且つ生産性に優れて安価な粘着加工シートを提供することを目的とした。
Such an adhesive-processed sheet often entrains air between the adhesive-processed sheet and the adherend, and the air reservoir portion is blistered, and a convex portion is formed on the surface side of the attached adhesive-processed sheet. There was a problem of damage. This problem is remarkable particularly when the area of the pressure-sensitive adhesive processed sheet is large or when the surface of the adherend is smooth.
Further, when the adherend is made of plastic (polycarbonate, acrylic, foamed polystyrene resin, etc.), gas may be generated from the plastic surface over time, and blisters may be generated on the pressure-sensitive adhesive sheet.
In order to solve the above problems, various adhesive processing sheets have been proposed in
Therefore, the present invention has been made to solve the above-mentioned problems and to provide a pressure-sensitive adhesive sheet that does not cause swelling at the time of sticking or after sticking and has excellent productivity.
本発明者らは、上記課題を解決するために鋭意研究を行った結果、シート基材Ａと、多数の小窪み部ｂ１および多数の小突起部ｂ２を有する粘着剤層Ｂから構成することを特徴とする粘着加工シートを用いることにより、製造コストが安価で、且つ被着体貼着時にフクレが発生しないので、粘着加工シートの外観を損ねず施工性が大幅に向上することを見出し、本発明を完成するに至った。
すなわち本発明は、シート基材Ａ、ならびに粘着剤層Ｂの基本平坦面に多数の小窪み部ｂ１および多数の小突起部ｂ２を有する粘着剤層Ｂから構成する粘着加工シートであって、小突起部ｂ２が小窪み部ｂ１の基本平坦面基底部における輪郭に沿って、隣接して形成されていることを特徴とする粘着加工シートを提供するものである。
As a result of intensive studies to solve the above problems, the inventors of the present invention are composed of a sheet base A and an adhesive layer B having a large number of small depressions b1 and a large number of small protrusions b2. By using the characteristic pressure-sensitive adhesive sheet, the manufacturing cost is low, and no blistering occurs when the adherend is stuck, so that the workability is greatly improved without deteriorating the appearance of the pressure-sensitive adhesive sheet. The invention has been completed.
That is, the present invention is a pressure-sensitive adhesive sheet composed of a pressure-sensitive adhesive layer B having a large number of small depressions b1 and a large number of small protrusions b2 on the basic flat surface of the sheet substrate A and the pressure-sensitive adhesive layer B. The protrusion processing part b2 is provided along the outline in the basic flat surface base part of the small hollow part b1, and the adhesive processing sheet | seat characterized by the above-mentioned is provided.
本発明の粘着加工シートの好ましい実施態様では、シート基材Ａ、粘着剤層Ｂの基本平坦面に多数の小窪み部ｂ１および多数の小突起部ｂ２を有する粘着剤層Ｂ、多数の***部ｃ１および多数の穿孔構造ｃ２を有する剥離シートＣから構成され、剥離シートＣの穿孔
構造ｃ２の周縁に***部ｃ１が形成されており、小窪み部ｂ１は***部ｃ１に対応し、小突起部ｂ２は穿孔構造ｃ２に対応していることが好ましい。
粘着剤層Ｂは、剥離シートＣと接する面側に基本平坦面を有しており、小窪み部ｂ１はこの基本平坦面から陥没しており、小突起部ｂ２はこの基本平坦面から突出していることが好ましい。小窪み部ｂ１はこの基本平坦面から１μｍ〜粘着剤層Ｂ厚さ分の深さで陥没しており、小突起部ｂ２はこの基本平坦面から１〜１５０μｍの高さで突出していることが好ましい。
In a preferred embodiment of the pressure-sensitive adhesive sheet of the present invention, the pressure-sensitive adhesive layer B having a large number of small depressions b1 and a large number of small protrusions b2 on the basic flat surface of the sheet substrate A and the pressure- sensitive adhesive layer B, a large number of raised portions. c1 and consists release sheet C having a number of perforations structure c2, perforated release sheet C
It is preferable that a raised portion c1 is formed on the periphery of the structure c2, the small depression b1 corresponds to the raised portion c1, and the small protrusion b2 corresponds to the perforated structure c2 .
The pressure-sensitive adhesive layer B has a basic flat surface on the side in contact with the release sheet C, the small depression b1 is depressed from the basic flat surface, and the small protrusion b2 protrudes from the basic flat surface. Preferably it is. The small depression b1 is depressed from the basic flat surface at a depth of 1 μm to the thickness of the adhesive layer B, and the small protrusion b2 protrudes from the basic flat surface at a height of 1 to 150 μm. preferable.
また、小窪み部ｂ１の基本平坦面と水平方向の断面形状は円形、楕円形、ドーナツ形、三日月形、ｎ角形（ｎは３以上の自然数）からなる群より選ばれた少なくとも一つ以上の形状であることが好ましく、ドーナツ形、三日月形より選ばれた少なくとも一つ以上の形状であることがより好ましい。同様に、小突起部ｂ２の基本平坦面と水平方向の断面形状は円形、楕円形、ドーナツ形、三日月形、ひょうたん形、ｎ角形（ｎは３以上の自然数）からなる群より選ばれた少なくとも一つ以上の形状であることが好ましく、ドーナツ形、三日月形、ひょうたん形からなる群より選ばれた少なくとも一つ以上の形状であることがより好ましく、小窪み部ｂ１の基本平坦面上における基底部輪郭に沿って、隣接して形成された形状であることが特に好ましい。 In addition, the basic flat surface and the horizontal cross-sectional shape of the small recess b1 are at least one selected from the group consisting of a circle, an ellipse, a donut, a crescent, and an n-gon (n is a natural number of 3 or more). The shape is preferable, and at least one shape selected from a donut shape and a crescent shape is more preferable. Similarly, the basic flat surface and horizontal cross-sectional shape of the small protrusion b2 are at least selected from the group consisting of a circle, an ellipse, a donut, a crescent, a gourd, and an n-gon (n is a natural number of 3 or more). It is preferably one or more shapes, more preferably at least one shape selected from the group consisting of a donut shape, a crescent shape, and a gourd shape, and the base on the basic flat surface of the small depression b1 It is particularly preferable that the shape is formed adjacent to the part outline.
また、小窪み部ｂ１は基本平坦面上において相互に離間し、散在しており、且つ小突起部ｂ２は基本平坦面上において相互に離間し、散在していることが好ましい。小窪み部ｂ１は１０〜１０，０００個／ｃｍ 2 の頻度で分布しており、且つ及び小突起部ｂ２は１０〜１０，０００個／ｃｍ2 の頻度で分布していることが好ましい。
また、小突起部ｂ２の基本平坦面上における基底部の幅は、１〜１，５００μｍであることが好ましい。
剥離シートＣの穿孔構造ｃ２の周縁に、***部ｃ１が形成されていることが好ましく、***部ｃ１部分の厚さは、剥離シートＣの非穿孔部分の厚さより１μｍ以上厚いことが好ましい。また、剥離シートＣは熱可塑性樹脂からなることが好ましい。
Further, it is preferable that the small depressions b1 are spaced apart and scattered on the basic flat surface, and the small protrusions b2 are spaced apart and scattered on the basic flat surface. Small recess b1 is distributed at a frequency of 10 to 10,000 pieces / cm 2, and and the small protrusion b2 is preferably distributed at a frequency of 10 to 10,000 pieces / cm 2.
Moreover, it is preferable that the width | variety of the base part on the basic flat surface of the small protrusion part b2 is 1-1,500 micrometers.
A raised portion c1 is preferably formed on the periphery of the perforated structure c2 of the release sheet C, and the thickness of the raised portion c1 is preferably 1 μm or more thicker than the thickness of the non-perforated portion of the release sheet C. The release sheet C is preferably made of a thermoplastic resin.
図１は、本発明の粘着加工シートにおける基本構成の断面図の一例であり、該粘着加工シートにおいて粘着剤層Ｂ側の垂直方向（俯瞰）から見た概略図を図２に示す。
図３は、本発明の粘着加工シートにおける他の基本構成の断面図の一例であり、該粘着加工シートにおいて粘着剤層Ｂ側の垂直方向（俯瞰）から見た概略図を図４に示す。
図中、１はシート基材Ａ、２は粘着剤層Ｂ、３は小窪み部ｂ１、４は小突起部ｂ２、５は基本平坦面を示す。
FIG. 1 is an example of a cross-sectional view of the basic configuration of the pressure-sensitive adhesive sheet of the present invention, and FIG. 2 shows a schematic view of the pressure-sensitive adhesive sheet as viewed from the vertical direction (overhead view) on the pressure-sensitive adhesive layer B side.
FIG. 3 is an example of a cross-sectional view of another basic configuration of the pressure-sensitive adhesive sheet of the present invention, and FIG. 4 shows a schematic view of the pressure-sensitive adhesive sheet as viewed from the vertical direction (overhead view) on the pressure-sensitive adhesive layer B side.
In the figure, 1 is a sheet substrate A, 2 is an adhesive layer B, 3 is a small depression b1, 4 is a small protrusion b2, and 5 is a basic flat surface.
剥離シートＣに***部ｃ１および穿孔構造ｃ２を設けることにより、粘着加工の際に剥離シートＣの形状が粘着剤層Ｂに転写され、粘着剤層Ｂには対応した多数の小窪み部ｂ１および小突起部ｂ２を形成することができる。
こうした小窪み部ｂ１および小突起部ｂ２を有することにより、粘着加工シートを被着体に軽く貼着した際に、まず粘着剤層Ｂの小突起部ｂ２が被着体に粘着し、粘着剤層Ｂの基本平坦面と被着体表面との間には外部に連通する隙間が生じる。この結果、外部に連通する隙間を介して、粘着加工シートと被着体間の殆どの空気を外部に抜くことができ、貼付時に大きく不均一なフクレを生じることはない。また、粘着加工シートと被着体との間に残った微少な空気は小窪み部ｂ１に溜まるので、外観を全く損なわずに施工することができる。
By providing the protruding portion c1 and the perforated structure c2 on the release sheet C, the shape of the release sheet C is transferred to the adhesive layer B during the adhesive processing, and the adhesive layer B has a number of corresponding small depressions b1 and A small protrusion b2 can be formed.
By having such small depressions b1 and small protrusions b2, when the adhesive processed sheet is lightly attached to the adherend, the small protrusions b2 of the adhesive layer B first adhere to the adherend, and the adhesive A gap communicating with the outside is formed between the basic flat surface of the layer B and the adherend surface. As a result, most of the air between the pressure-sensitive adhesive processed sheet and the adherend can be extracted to the outside through the gap communicating with the outside, and large non-uniform swelling does not occur at the time of application. Moreover, since the minute air remaining between the pressure-sensitive adhesive processed sheet and the adherend accumulates in the small depression b1, it can be constructed without impairing the appearance at all.
また、粘着剤層Ｂは基本平坦面を有することによって、粘着加工シートの粘着剤層Ｂを被着体に強く圧着した際に、粘着剤層Ｂの基本平坦面が被着面に連続的に接着し、粘着剤層Ｂと被着体間に連通していた隙間は無くなり、強い接着強度を得ることもできる。また強い圧着の際にも、小窪み部ｂ１は被着体には接着しておらず、被着体がプラスチックの場合に経時で発生するガスが、この小窪み部ｂ１に均一に溜まるため、施工後も大きく不均一なフクレは発生せず、著しく外観を損ねることはない。
更に、粘着加工シートを被着体に軽く貼着した時、まず粘着剤層Ｂの小突起部ｂ２が被着体に密着するため、密着面積は小となる。このため、貼り替え直す場合に再び剥がして貼り直すことが容易である。また剥離に伴う粘着強度の低下を抑えることも可能となる。
以上の利点から、例えば本発明の粘着加工シートを大判のラベルとして施工する際には位置決め等も容易であり、作業に熟練を要せず、短時間で作業完了し、美麗な仕上がりを得ることが可能となる。
Moreover, when the pressure-sensitive adhesive layer B has a basic flat surface, when the pressure-sensitive adhesive layer B of the pressure-sensitive adhesive processed sheet is strongly pressure-bonded to the adherend, the basic flat surface of the pressure-sensitive adhesive layer B is continuously attached to the adherend surface. The gap between the pressure-sensitive adhesive layer B and the adherend is eliminated, and strong adhesive strength can be obtained. Further, even during strong pressure bonding, the small depression b1 is not bonded to the adherend, and the gas generated over time when the adherend is plastic is uniformly accumulated in the small depression b1. Large and uneven blisters do not occur after construction, and the appearance is not significantly impaired.
Further, when the pressure-sensitive adhesive sheet is lightly adhered to the adherend, first, the small protrusion b2 of the pressure-sensitive adhesive layer B is in close contact with the adherend, so that the contact area is small. For this reason, it is easy to peel off and re-paste when re-paste. It is also possible to suppress a decrease in the adhesive strength accompanying peeling.
From the above advantages, for example, when the adhesive processed sheet of the present invention is constructed as a large-sized label, positioning is easy, and it does not require skill in the work, and the work can be completed in a short time and a beautiful finish can be obtained. Is possible.
本発明の粘着加工シートを使用することにより、貼り直しが容易で、且つシート施工時および施工後に大きく不均一なフクレが発生しないため、大判のステッカー、ラベル、サイン、ネーマー、タックシート等に有用に利用することができる。 By using the pressure-sensitive adhesive sheet of the present invention, it is easy to re-attach, and since large and uneven blisters do not occur during and after the sheet construction, it is useful for large format stickers, labels, signs, namers, tack sheets, etc. Can be used.
（シート基材Ａ）
シート基材Ａの材質は特に制限なく、天然紙、プラスチックフィルム、合成紙、織布、不織布など各種の基材が適用できる。特にポリオレフィン、ポリエステルなどのプラスチックフィルム、またはポリオレフィン、ポリエステルからなる合成紙は、基本的に通気性に乏しい基材である分、本発明の技術が好ましく適用できる。またそれらの基材シートは基材強度が強いため剥離時にシート基材が破壊せず、きれいに剥離できるため好ましい。
シート基材Ａの厚さは３０〜２０００μｍであり、好ましくは４０〜１５００μｍである。
(Sheet substrate A)
The material of the sheet substrate A is not particularly limited, and various substrates such as natural paper, plastic film, synthetic paper, woven fabric, and non-woven fabric can be applied. In particular, a plastic film such as polyolefin or polyester, or synthetic paper made of polyolefin or polyester is basically applicable to the technique of the present invention because it is a base material with poor air permeability. In addition, since these base sheets have high base strength, the sheet base material is not destroyed at the time of peeling, and is preferable because it can be peeled cleanly.
The thickness of the sheet base material A is 30 to 2000 μm, preferably 40 to 1500 μm.
（剥離シートＣ）
剥離シートＣの材質の例としては、ポリエチレン、ポリプロピレンなどのポリオレフィン系樹脂、ポリエチレンテレフタレートなどのポリエステル系樹脂、ナイロンなどのポリアミド系樹脂等の熱可塑性樹脂シート、またはこれらの熱可塑性樹脂シートを天然紙の片面または両面にラミネートしたラミネート紙、金属箔、さらには金属箔と熱可塑性樹脂シート、金属箔と天然紙などの組み合わせ複合物などが挙げられる。好ましくは熱可塑性樹脂シートであり、より好ましくはポリプロピレンフィルムである。
(Peeling sheet C)
Examples of the material of the release sheet C include polyolefin resin such as polyethylene and polypropylene, polyester resin such as polyethylene terephthalate, thermoplastic resin sheet such as polyamide resin such as nylon, or these thermoplastic resin sheets made of natural paper. Laminated paper laminated on one or both sides, metal foil, metal foil and thermoplastic resin sheet, and composite composites such as metal foil and natural paper. A thermoplastic resin sheet is preferable, and a polypropylene film is more preferable.
剥離シートＣには***部ｃ１および穿孔構造ｃ２を設ける為に後述する穿孔処理を施す。穿孔処理前の剥離処理面側の表面は後に粘着剤層Ｂの基本平坦面を成すものであり、平滑であることが好ましいが、剥離性能をコントロールする目的から、粗面とすることも可能である。
剥離シートＣ上に剥離剤を塗布する前に、剥離シートＣ表面にコロナ放電、フレーム処理、オゾン処理等の表面処理を行っても良い。
剥離剤としては、シリコーン樹脂、フッ素樹脂、アミノアルキド樹脂、ポリエステル樹脂等が挙げられ、好ましくはシリコーン樹脂である。これらはエマルジョン型、溶剤型、または無溶剤型として使用される。
本発明の剥離シートＣの厚さは、取扱い強度、穿孔容易性などの観点から、５〜１５０μｍが好ましく、より好ましくは１０〜１３０μｍである。
The release sheet C is subjected to a perforation process to be described later in order to provide a raised portion c1 and a perforated structure c2. The surface on the side of the release treatment surface before the perforation treatment will later form the basic flat surface of the pressure-sensitive adhesive layer B, and is preferably smooth, but may be rough for the purpose of controlling the release performance. is there.
Before applying the release agent on the release sheet C, the surface of the release sheet C may be subjected to a surface treatment such as corona discharge, flame treatment, or ozone treatment.
Examples of the release agent include a silicone resin, a fluororesin, an amino alkyd resin, and a polyester resin, and a silicone resin is preferable. These are used as an emulsion type, a solvent type, or a solventless type.
The thickness of the release sheet C of the present invention is preferably 5 to 150 μm, more preferably 10 to 130 μm, from the viewpoints of handling strength, ease of perforation, and the like.
（穿孔処理）
本発明の剥離シートＣの穿孔周縁部は、後述する穿孔処理方法により熱変形または塑性変形することによって、該シートの厚み方向に捲れあがり、該シートの非穿孔処理部分の厚さ（あるいは穿孔処理前の該シートの平均厚さ）よりも厚さが増加する。本発明では剥離シートＣへの穿孔処理により厚さ増加した部分を***部ｃ１とする。***部ｃ１部分の厚さは、剥離シートＣの非穿孔処理部分の厚さ（あるいは穿孔処理前の剥離シートの平均厚さ）よりも１μｍ以上厚くなっていることが好ましく、１μｍ〜粘着剤層Ｂの厚み分厚くなっていることがより好ましく、３μｍ〜粘着剤層Ｂの厚み分の範囲で厚くなっていることが特に好ましい。
***部ｃ１の厚さが非穿孔部分の厚さに比べて１μｍ未満である場合は、剥離シートＣに充分な突起高さを得ることができず、後述する粘着加工時に粘着剤層Ｂに形成される小窪み部ｂ１の陥没深さも得ることができず、本発明の趣旨であるフクレ防止を達成できない。
(Punching process)
The perforation peripheral portion of the release sheet C of the present invention is heated or plastically deformed by a perforation processing method to be described later, thereby rolling in the thickness direction of the sheet, and the thickness (or perforation processing) of the non-perforated portion of the sheet. The thickness increases over the previous (average thickness of the sheet). In the present invention, a portion where the thickness is increased by the perforating process on the release sheet C is defined as a raised portion c1. The thickness of the raised portion c1 is preferably 1 μm or more thicker than the thickness of the non-perforated portion of the release sheet C (or the average thickness of the release sheet before the perforation treatment). It is more preferable that it is thicker than the thickness of B, and it is particularly preferable that it is thicker in the range of 3 μm to the thickness of the pressure-sensitive adhesive layer B.
When the thickness of the raised portion c1 is less than 1 μm compared to the thickness of the non-perforated portion, a sufficient protrusion height cannot be obtained on the release sheet C, and the adhesive layer B is formed at the time of adhesive processing described later. Therefore, the depth of depression of the small depression b1 cannot be obtained, and the prevention of blistering, which is the gist of the present invention, cannot be achieved.
剥離シートＣは穿孔処理によって、穿孔構造ｃ２が生じる。穿孔構造ｃ２は貫通孔でも良いし、半貫通孔（剥離シートの厚み方向に貫通していない孔）でも良い。また本発明の構成要件を満たす範囲で剥離シートＣの穿孔構造ｃ２は厚み方向に形状や孔径が変化するものであっても良い。剥離シートＣは穿孔処理により貫通孔を設けた後に、別の基材を積層して、貫通孔の片側を閉じて穿孔構造ｃ２を半貫通孔としたものであっても良い。
穿孔構造ｃ２の深さは本発明の構成要件を満足できる性能を持ち得る範囲で、特に限定されない。中でも剥離シートＣの表面から、１μｍ以上の深さを持っていることが好ましく、１μｍ〜剥離シートＣの厚み分の深さを持っていることがより好ましく、３μｍ〜剥離シートＣの厚み分の範囲で深さを持っていることが特に好ましい。
The release sheet C has a perforated structure c2 by a perforation process. The perforated structure c2 may be a through hole or a half through hole (a hole that does not penetrate in the thickness direction of the release sheet). Further, the perforated structure c2 of the release sheet C may change in shape and hole diameter in the thickness direction as long as the constituent requirements of the present invention are satisfied. The release sheet C may be one in which a through hole is provided by a punching process, and another base material is laminated, and one side of the through hole is closed to make the punched structure c2 a semi-through hole.
The depth of the pierced structure c2 is not particularly limited as long as it can have performance that satisfies the constituent requirements of the present invention. Among them, the surface of the release sheet C preferably has a depth of 1 μm or more, more preferably 1 μm to a depth of the release sheet C, more preferably 3 μm to the thickness of the release sheet C. It is particularly preferred to have a depth in the range.
穿孔構造ｃ２の孔径もまた、本発明の構成要件を満足できる性能を持ち得る範囲で、特に限定されない。具体例としては５〜２，０００μｍ、好ましくは５０〜１，５００μｍであり、下記の穿孔処理方法で形成可能な範囲のものである。
***部ｃ１部分の厚さ（高さ）、穿孔構造ｃ２の深さは、穿孔加工後の剥離シートＣの断面をミクロトームで切り出し、市販のイオンコーターでイオンエッチングおよび金蒸着した後、走査型電子顕微鏡（商品名：Ｓ−３０００Ｎ、（株）日立ハイテクノロジーズ製）にて、断面形態から算出した。
剥離シートＣに***部ｃ１および穿孔構造ｃ２を設ける穿孔処理の方法としては、熱針穿孔法、レーザー光穿孔法、電子線照射穿孔法、プラズマ穿孔法、高圧放電穿孔法から選ばれた少なくとも一つの方法が適用でき、剥離シートＣの材質、厚さ、加工速度、穿孔径に応じて適宜選択し、組み合わせることができる。
The hole diameter of the pierced structure c2 is not particularly limited as long as it can have performance that satisfies the constituent requirements of the present invention. As a specific example, it is 5-2,000 micrometers, Preferably it is 50-1,500 micrometers, and is a thing of the range which can be formed with the following perforation processing method.
The thickness (height) of the raised portion c1 and the depth of the perforated structure c2 are determined by scanning the cross section of the release sheet C after perforation with a microtome, performing ion etching and gold deposition with a commercially available ion coater, and then scanning electron The cross-sectional shape was calculated with a microscope (trade name: S-3000N, manufactured by Hitachi High-Technologies Corporation).
As a punching method for providing the raised portion c1 and the punched structure c2 on the release sheet C, at least one selected from a hot needle punching method, a laser beam punching method, an electron beam irradiation punching method, a plasma punching method, and a high-pressure discharge punching method. One method can be applied, and can be appropriately selected and combined according to the material, thickness, processing speed, and perforation diameter of the release sheet C.
（粘着剤層Ｂ）
本発明の粘着剤層Ｂの種類（材質）や厚さ（塗工量）は、シート基材Ａに用いる基材の材質、厚みや、使用される環境（被着体の材質や状態、屋内や屋外、温度や湿度、使用期間等）や、目的とする粘着の強度等により種々の選択が可能であり、特に限定はされない。
粘着剤層Ｂの例としては、一般的に用いられる水系もしくは溶剤系の粘着剤を塗工し乾燥して形成することができる。種類（材質）としては、天然ゴム系、合成ゴム系、アクリル系、ウレタン系、ＥＶＡ系、シリコーン系等のものが使用でき、これらの高分子系粘着剤は有機溶媒溶液や、エマルジョンやディスパージョンといった水系溶液に分散した形態で使用可能である。
(Adhesive layer B)
The type (material) and thickness (coating amount) of the pressure-sensitive adhesive layer B of the present invention are the material and thickness of the base material used for the sheet base material A, and the environment used (material and state of the adherend, indoors). And outdoors, temperature, humidity, period of use, etc.) and the desired adhesive strength, etc., and various selections are possible and are not particularly limited.
As an example of the pressure-sensitive adhesive layer B, a water-based or solvent-based pressure-sensitive adhesive generally used can be applied and dried. As the type (material), natural rubber, synthetic rubber, acrylic, urethane, EVA, silicone, etc. can be used. These polymer adhesives are organic solvent solutions, emulsions and dispersions. It can be used in a form dispersed in an aqueous solution.
（塗工方法）
シート基材Ａ上に粘着剤層Ｂを設ける方法には、直接シート基材Ａに粘着剤を塗工する直接塗工と、一旦剥離シートＣに粘着剤を塗工する間接塗工の二通りが考えられるが、本発明の技術はその両方とも適用可能であり、特に限定はされない。
粘着剤の塗工方法も特に限定はされない。例えばコンマコート塗工、リバースコート塗工、グラビアコート塗工、キスコート塗工、ナイフコート塗工、バーコート塗工、カーテンコート塗工、および工程紙にこれらの方法で塗工した粘着剤を転写させる転写法などが挙げられる。
厚さ（塗工量）としては、乾燥重量で０．５〜４００ｇ／ｍ2 、もしくは乾燥厚みで０．５〜４００μｍの範囲で用いられるのが一般的である。
(Coating method)
There are two methods for providing the pressure-sensitive adhesive layer B on the sheet base material A: direct coating for directly applying the pressure-sensitive adhesive to the sheet base material A and indirect coating for once applying the pressure-sensitive adhesive to the release sheet C. However, both of the techniques of the present invention are applicable and are not particularly limited.
The method for applying the adhesive is not particularly limited. For example, comma coated coating, reverse coated coating, gravure coated coating, kiss coated coating, knife coated coating, bar coated coating, curtain coated coating, and transfer of adhesive applied by these methods to process paper And transfer method.
The thickness (coating amount) is generally 0.5 to 400 g / m 2 in terms of dry weight or 0.5 to 400 μm in terms of dry thickness.
（小窪み部ｂ１および小突起部ｂ２の形成方法）
粘着剤層Ｂに設ける小窪み部ｂ１および小突起部ｂ２は、穿孔処理した剥離シートＣを用いることによって、粘着剤層Ｂと剥離シートＣが積層される際に（間接塗工の場合は剥離シートＣへの粘着剤塗工時に）、剥離シートＣの***部ｃ１が粘着剤層Ｂの基本平坦面に食い込んで対応する小窪み部ｂ１を形成する。同時に剥離シートＣの穿孔構造ｃ２に粘着剤層Ｂの基本平坦面より粘着剤が流入して対応する小突起部ｂ２を形成する。これらの小窪み部ｂ１は***部ｃ１に対応するものであり、また小突起部ｂ２は穿孔構造ｃ２に対応するものである。
(Formation method of small hollow part b1 and small projection part b2)
The small depressions b1 and the small protrusions b2 provided in the pressure-sensitive adhesive layer B are formed when the pressure-sensitive adhesive layer B and the release sheet C are laminated by using the punched release sheet C (in the case of indirect coating, peeling) When the pressure-sensitive adhesive is applied to the sheet C), the raised portion c1 of the release sheet C bites into the basic flat surface of the pressure-sensitive adhesive layer B to form a corresponding small depression b1. At the same time, the adhesive flows into the perforated structure c2 of the release sheet C from the basic flat surface of the adhesive layer B to form a corresponding small protrusion b2. These small depressions b1 correspond to the raised portions c1, and the small protrusions b2 correspond to the perforated structure c2.
加えて、シート基材Ａに粘着剤層Ｂを直接設ける直接塗工の場合には、剥離シートＣを積層する際に剥離シートＣの***部ｃ１が粘着剤層Ｂの基本平坦面に食い込んで対応する小窪み部ｂ１を形成すると同時に、押し出された粘着剤が小窪み部ｂ１の周囲に、小突起部ｂ２として堤防のように形成される。この場合、生じる小窪み部ｂ１は***部ｃ１に対応するものだが、小突起部ｂ２は穿孔構造ｃ２と必ずしも対応するものではない。
小窪み部ｂ１の陥没深さは、粘着剤層Ｂの基本平坦面から１μｍ〜粘着剤層Ｂの厚さの範囲であることが好ましく、基本平坦面から３μｍ〜粘着剤層Ｂの厚さの範囲であることがより好ましい。小窪み部ｂ１の深さが１μｍ未満では、小窪み部ｂ１も被着体に接着しやすくなり、残留した微少な空気あるいは被着体から発生したガスが不均一に溜まるために結果的にフクレを発生させ、外観を著しく損ない好ましくない。
In addition, in the case of direct coating in which the pressure-sensitive adhesive layer B is directly provided on the sheet base A, the raised portion c1 of the release sheet C bites into the basic flat surface of the pressure-sensitive adhesive layer B when the release sheet C is laminated. At the same time as forming the corresponding small depression b1, the extruded adhesive is formed around the small depression b1 as a small protrusion b2 like a bank. In this case, the resulting small depression b1 corresponds to the raised portion c1, but the small protrusion b2 does not necessarily correspond to the perforated structure c2.
The depression depth of the small depression b1 is preferably in the range of 1 μm to the thickness of the pressure-sensitive adhesive layer B from the basic flat surface of the pressure-sensitive adhesive layer B, and 3 μm to the thickness of the pressure-sensitive adhesive layer B from the basic flat surface. A range is more preferable. If the depth of the small depression b1 is less than 1 μm, the small depression b1 is also likely to adhere to the adherend, and the remaining minute air or gas generated from the adherend accumulates unevenly, resulting in blistering. This is not preferable because the appearance is remarkably impaired.
小突起部ｂ２の突出高さは、粘着剤層Ｂの基本平坦面から１μｍ〜１５０μｍの範囲であることが好ましく、基本平坦面から３μｍ〜１００μｍの範囲であることがより好ましい。小突起部ｂ２の高さが１μｍ未満では、粘着加工シートを被着体に貼着する際、粘着剤層Ｂと被着体間の外部へ連通する隙間は小さくなるため空気の抜けが悪くなり、結果的に大きく不均一なフクレを発生させ、外観を著しく損ない好ましくない。また１５０μｍを超えて大きい場合は、被着体に貼り付けた後に強く圧着しても基本平坦面が被着面と接触できず、強い接着力を求める場合には不利に働き好ましくない。
小窪み部ｂ１の陥没深さ、小突起部ｂ２の突出高さは、加工後の粘着加工シートを粘着剤のガラス転移点以下の温度に調整してミクロトームを用いて断面を切り出し、市販のイオンコーターでイオンエッチングおよび金蒸着した後、走査型電子顕微鏡（商品名：Ｓ−３０００Ｎ、（株）日立ハイテクノロジーズ製）にて、断面形態から算出した。
The protrusion height of the small protrusion b2 is preferably in the range of 1 μm to 150 μm from the basic flat surface of the pressure-sensitive adhesive layer B, and more preferably in the range of 3 μm to 100 μm from the basic flat surface. If the height of the small protrusion b2 is less than 1 μm, when the pressure-sensitive adhesive sheet is adhered to the adherend, the gap between the pressure-sensitive adhesive layer B and the adherend that communicates with the outside becomes small, and air escape becomes worse. As a result, large and uneven blisters are generated, and the appearance is remarkably impaired. On the other hand, when the thickness is larger than 150 μm, the basic flat surface cannot be brought into contact with the adherend surface even if it is strongly pressed after being attached to the adherend.
The depression depth of the small depression b1 and the projection height of the small projection b2 are adjusted to a temperature below the glass transition point of the adhesive after the processing, and the cross section is cut out using a microtome. After ion etching and gold vapor deposition with a coater, the cross-sectional shape was calculated with a scanning electron microscope (trade name: S-3000N, manufactured by Hitachi High-Technologies Corporation).
小窪み部ｂ１の形状は本質的に剥離シートＣの***部ｃ１の形状を転写したものであり、特に限定されるものではないが、粘着剤層Ｂの基本平坦面に対して水平方向の断面形状が円形、楕円形、ドーナツ形、三日月形、ｎ角形（ｎは３以上の自然数）からなる群より選ばれた少なくとも一つ以上の形状が好ましく選択でき、特にドーナツ形、三日月形の何れかより選ばれた少なくとも一つ以上の形状であることが好ましい。
上記の形状は本発明の剥離シートＣへの穿孔処理において、選択し得る好適な形状であり、特にドーナツ形、三日月形は安価な処理プロセスで成形しうる点で好ましい。
The shape of the small depression b1 is essentially a transfer of the shape of the raised portion c1 of the release sheet C, and is not particularly limited, but the cross section in the horizontal direction with respect to the basic flat surface of the adhesive layer B At least one shape selected from the group consisting of a circle, an ellipse, a donut shape, a crescent shape, and an n-gon shape (n is a natural number of 3 or more) can be preferably selected, and in particular, either a donut shape or a crescent shape Preferably, the shape is at least one or more selected.
The above shape is a suitable shape that can be selected in the perforating process on the release sheet C of the present invention, and the donut shape and the crescent shape are particularly preferable in that they can be formed by an inexpensive processing process.
同様に、小突起部ｂ２の基本平坦面と水平方向の断面形状は円形、楕円形、ドーナツ形、三日月形、ひょうたん形、ｎ角形（ｎは３以上の自然数）からなる群より選ばれた少なくとも一つ以上の形状が好ましく選択でき、ドーナツ形、三日月形、ひょうたん形からなる群より選ばれた少なくとも一つ以上の形状であることがより好ましく、小窪み部ｂ１の基本平坦面基底部における輪郭に沿って、その外周に隣接して形成される形状であることが特に好ましい。
上記の形状を設けることにより、微少なフクレが生じたとしても目立ちにくく、大きく外観を損ねることはない。
本発明の技術は小窪み部ｂ１と小突起部ｂ２はそれぞれ独立して、離間して存在していても良いが、小窪み部ｂ１に隣接して小突起部ｂ２が形成されている場合は、粘着剤層Ｂと被着体の間に残った微少な空気、若しくは被着体から発生したガスが、小突起部ｂ２に隣接した小窪み部ｂ１に集中して取り込まれ、不均一なフクレを効果的に抑制できる。
Similarly, the basic flat surface and horizontal cross-sectional shape of the small protrusion b2 are at least selected from the group consisting of a circle, an ellipse, a donut, a crescent, a gourd, and an n-gon (n is a natural number of 3 or more). One or more shapes can be preferably selected, and at least one shape selected from the group consisting of a donut shape, a crescent shape, and a gourd shape is more preferable, and the contour of the base portion of the basic flat surface of the small depression b1 It is particularly preferable that the shape is formed adjacent to the outer periphery along the outer periphery.
By providing the above-mentioned shape, even if a slight bulge is generated, it is not noticeable and the appearance is not greatly impaired.
According to the technique of the present invention, the small depression b1 and the small protrusion b2 may be present separately and separated from each other, but when the small protrusion b2 is formed adjacent to the small depression b1. The minute air remaining between the pressure-sensitive adhesive layer B and the adherend or the gas generated from the adherend is intensively taken into the small depression b1 adjacent to the small protrusion b2, and the uneven blister Can be effectively suppressed.
小窪み部ｂ１は基本平坦面上に多数存在し、それらは相互に離間し、散在していることがこのましい。小窪み部ｂ１が密に存在している場合は基本平坦面の占める割合が低下し、粘着基材シートの接着力がその部分だけ低下してしまう。疎になっている場合は粘着剤層Ｂと被着体の間の微少な空気やガスを取り込めきれずにフクレが発生してしまう恐れがある。
小窪み部ｂ１は、１０〜１０，０００個／ｃｍ2 の頻度で分布していることが好ましく、１５〜５，０００個／ｃｍ2 の頻度で分布していることがより好ましい。
小窪み部ｂ１の分布頻度が１０個／ｃｍ2 未満である場合にはフクレ防止効果が低下するために好ましくない。１０，０００個／ｃｍ2 を超える場合には要求する接着強度が得られず好ましくない。
小窪み部ｂ１は、フクレ防止の観点から基本平坦面上で均等に分布させることが特に好ましい。
Many small hollow parts b1 exist on a basic flat surface, and it is preferable that they are mutually spaced apart and scattered. When the small hollow part b1 exists densely, the ratio for which a basic flat surface occupies falls, and the adhesive force of an adhesion base material sheet will fall only that part. When it is sparse, there is a risk that blistering may occur due to the inability to take in minute air and gas between the pressure-sensitive adhesive layer B and the adherend.
The small depressions b1 are preferably distributed at a frequency of 10 to 10,000 / cm 2 , and more preferably at a frequency of 15 to 5,000 / cm 2 .
If the distribution frequency of the small depressions b1 is less than 10 / cm 2 , the effect of preventing blistering is lowered, which is not preferable. If it exceeds 10,000 / cm 2 , the required adhesive strength cannot be obtained, which is not preferable.
It is particularly preferable that the small depressions b1 are evenly distributed on the basic flat surface from the viewpoint of preventing swelling.
同様に小突起部ｂ２は基本平坦面上に多数存在し、それらは相互に離間し、散在している事がこのましい。小突起部ｂ２が密に存在している場合は被着体との接触面積が低下し、強く圧着しても充分な接着強度が得られない。疎になっている場合は粘着加工シートを被着体に貼着する際、粘着剤層Ｂと被着体間の外部へ連通する隙間は小さくなるため空気の抜けが悪くなり、結果的に大きく不均一なフクレを発生してしまう恐れがある。
小突起部ｂ２は、１０〜１０，０００個／ｃｍ2 の頻度で分布していることが好ましく、１５〜５，０００個／ｃｍ2 の頻度で分布していることがより好ましい。
Similarly, there are many small protrusions b2 on the basic flat surface, and they are preferably spaced apart from each other and scattered. When the small projections b2 are densely present, the contact area with the adherend is reduced, and sufficient adhesive strength cannot be obtained even when strongly pressed. When it is sparse, when adhering the adhesive sheet to the adherend, the gap between the adhesive layer B and the adherend communicating with the outside becomes small, so air escape becomes worse, resulting in a larger There is a risk of non-uniform swelling.
The small protrusions b2 are preferably distributed at a frequency of 10 to 10,000 / cm 2 , and more preferably at a frequency of 15 to 5,000 / cm 2 .
小突起部ｂ２の分布頻度が１０個／ｃｍ2 未満である場合には大きく不均一なフクレが発生し外観を著しく損ない好ましくない。１０，０００個／ｃｍ2 を超える場合には要求する接着強度が得られず好ましくない。
小突起部ｂ２の基本平坦面上における分布頻度は、上記の範囲内である限り均一であっても、不均一であっても良い。均一であればシート全面に均等な接着力を持たせることができ、施工性が向上する。不均一であれば部分的に接着力を弱めたラベル等を作成することができ、クーポン券付きラベルなどに適用できる。
小突起部ｂ２の水平方向の大きさは、基本平坦面における基底部の最大幅が１〜１，５００μｍであることが好ましく、３〜１，０００μｍであることがより好ましい。
When the distribution frequency of the small protrusions b2 is less than 10 pieces / cm 2 , it is not preferable because large and uneven blisters are generated and the appearance is remarkably impaired. If it exceeds 10,000 / cm 2 , the required adhesive strength cannot be obtained, which is not preferable.
The distribution frequency of the small protrusions b2 on the basic flat surface may be uniform or nonuniform as long as it is within the above range. If it is uniform, a uniform adhesive force can be given to the entire sheet surface, and workability is improved. If it is not uniform, it is possible to create a label with partially weakened adhesive force, and it can be applied to a label with a coupon.
As for the size of the small protrusion b2 in the horizontal direction, the maximum width of the base portion on the basic flat surface is preferably 1 to 1,500 μm, and more preferably 3 to 1,000 μm.
小突起部ｂ２の最大幅が１μｍに満たない場合は、粘着剤層Ｂと被着体の間の微少な空気やガスを取り込めきれずにフクレが発生してしまうために好ましくない。小突起部ｂ２の幅が１，５００μｍよりも大きい場合は、基本平坦面の占める面積割合が低下し、要求する接着強度が得られず好ましくない。
本発明の粘着加工シートのシート基材Ａには、各種の印刷方法にて装飾を施すことができる。印刷方法としては、電子写真方式、溶融熱転写方式、昇華熱転写方式、リライタブルマーキング、およびインクジェット方式等のプリンターの使用は勿論のこと、凸版印刷、グラビア印刷、フレキソ印刷、溶剤型オフセット印刷、紫外線硬化型オフセット印刷、スクリーン印刷など種々の印刷方式が適用できる。
When the maximum width of the small protrusion b2 is less than 1 μm, it is not preferable because a small amount of air and gas between the adhesive layer B and the adherend cannot be taken in and blisters are generated. When the width of the small protrusion b2 is larger than 1,500 μm, the area ratio occupied by the basic flat surface is lowered, and the required adhesive strength cannot be obtained, which is not preferable.
The sheet substrate A of the pressure-sensitive adhesive processed sheet of the present invention can be decorated by various printing methods. Printing methods include electrophotographic, fusion thermal transfer, sublimation thermal transfer, rewritable marking, and inkjet printers, as well as letterpress printing, gravure printing, flexographic printing, solvent offset printing, and UV curable printing. Various printing methods such as offset printing and screen printing can be applied.
以下に実施例、比較例、試験例を挙げて本発明を具体的に説明する。以下の実施例に示す材料、使用量、割合、処理内容、処理手順等は、本発明の趣旨を逸脱しない限り適宜変更することができる。したがって、本発明の範囲は以下に示す具体例により何ら限定されない。
〔実施例１〕
厚さ６０μｍのポリプロピレンフィルム（商品名：パイレンＰ２７６１、東洋紡績（株）製）に熱針穿孔法を用いて貫通穿孔処理を実施し、この穿孔部の捲れ上がりのある面にシリコーン処理を施し、剥離シートＣとした。孔径は４００μｍ、孔数は６０個／ｃｍ2 であり、穿孔部の深さは６０μｍ（貫通孔）であり、穿孔部の周縁に生じた***部ｃ１の高さは６０μｍであった。
次にシート基材Ａとして厚さ８０μｍの合成紙（商品名：ＳＧＳ−８０、（株）ユポ・コーポレーション製）に、接着剤層Ｂとして溶剤系アクリル系粘着剤（商品名：オリバインＢＰＳ１１０９、東洋インキ化学工業（株）製）を、乾燥後の塗工量が３０ｇ／ｍ2 となるようにコンマコーターで塗工し、乾燥して粘着加工シート（シート基材Ａ＋粘着剤層Ｂ）とした。
この粘着加工シートの粘着剤層面と剥離シートＣのシリコーン塗布面が接する様に積層し、粘着加工シートを得た。得られた粘着加工シートの物性を表１に示す。
The present invention will be specifically described below with reference to examples, comparative examples, and test examples. The materials, amounts used, ratios, processing details, processing procedures, and the like shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention is not limited by the specific examples shown below.
[Example 1]
A 60 μm-thick polypropylene film (trade name: Pyrene P2761, manufactured by Toyobo Co., Ltd.) was subjected to through-piercing processing using a hot needle punching method, and a silicone treatment was applied to the surface of the punched portion that had been rolled up, A release sheet C was obtained. The hole diameter was 400 μm, the number of holes was 60 / cm 2 , the depth of the perforated part was 60 μm (through hole), and the height of the raised part c1 generated at the periphery of the perforated part was 60 μm.
Next, 80 μm thick synthetic paper (trade name: SGS-80, manufactured by YUPO Corporation) as the sheet substrate A, and solvent-based acrylic pressure-sensitive adhesive (trade name: Olivevine BPS1109, Toyo) as the adhesive layer B Ink Chemical Industry Co., Ltd.) was applied with a comma coater so that the coating amount after drying was 30 g / m 2, and dried to obtain an adhesive processed sheet (sheet base material A + adhesive layer B). .
Lamination was performed such that the pressure-sensitive adhesive layer surface of the pressure-sensitive adhesive sheet and the silicone-coated surface of the release sheet C were in contact with each other to obtain a pressure-sensitive adhesive sheet. Table 1 shows the physical properties of the obtained pressure-sensitive adhesive processed sheet.
〔実施例２〕
市販の厚さ１９０μｍの粘着加工シート（商品名：ＸＪＰ−１９０、（株）ユポ・コーポレーション製）の剥離紙を剥がし、この粘着加工シートの粘着剤層面と実施例１で得た剥離シートＣのシリコーン処理面が接する様に積層し、粘着加工シートを得た。得られた粘着加工シートの物性を表１に示す。
[Example 2]
The release paper of a commercially available 190 μm thick adhesive sheet (trade name: XJP-190, manufactured by YUPO Corporation) was peeled off, and the adhesive layer surface of this adhesive sheet and the release sheet C obtained in Example 1 were removed. Lamination was performed so that the silicone-treated surface was in contact with each other to obtain an adhesive processed sheet. Table 1 shows the physical properties of the obtained pressure-sensitive adhesive processed sheet.
〔実施例３〕
実施例１で得た剥離シートＣのシリコーン処理面に、粘着剤層Ｂとして溶剤系アクリル系粘着剤（商品名：オリバインＢＰＳ１１０９、東洋インキ化学工業（株）製）を、乾燥後の塗工量が３０μｍとなるようにバーコーターで塗工し、乾燥して積層体（粘着剤層Ｂ＋剥離シートＣ）とした。
次にシート基材Ａとして厚さ８０μｍの合成紙（商品名：ＳＧＳ−８０、（株）ユポ・コーポレーション製）と、積層体の粘着剤層Ｂ面とを積層して粘着加工シートを得た。得られた粘着加工シートの物性を表１に示す。
実施例１〜実施例３を通じて、使用した材料（シート基材、粘着剤、剥離シート等）はいずれも当業者であれば一般的に入手可能なものであり、剥離シートに予め穿孔処理を施した以外には、加工機器や加工条件に特別なものは使用していない。従って現在提案されている技術の様に特別な部材や加工工程を必要とし、生産性が劣り、コスト高となる事はなく、安価に課題を解決しうる粘着加工シートを得ることができた。
Example 3
On the silicone-treated surface of release sheet C obtained in Example 1, a solvent-based acrylic pressure-sensitive adhesive (trade name: Olivevine BPS1109, manufactured by Toyo Ink Chemical Co., Ltd.) as pressure-sensitive adhesive layer B was applied after drying. Was coated with a bar coater so as to be 30 μm, and dried to obtain a laminate (adhesive layer B + release sheet C).
Next, a synthetic paper (trade name: SGS-80, manufactured by YUPO Corporation) having a thickness of 80 μm and a pressure-sensitive adhesive layer B surface of the laminate were laminated as the sheet base material A to obtain an adhesive processed sheet. . Table 1 shows the physical properties of the obtained pressure-sensitive adhesive processed sheet.
Throughout Examples 1 to 3, all the materials used (sheet base material, adhesive, release sheet, etc.) are generally available to those skilled in the art, and the release sheet is pre-perforated. Other than the above, no special processing equipment or processing conditions are used. Therefore, special members and processing steps are required as in the currently proposed technology, the productivity is inferior, the cost is not increased, and an adhesive processed sheet that can solve the problem at low cost can be obtained.
〔比較例１〕
厚さ６０μｍのポリプロピレンフィルム（商品名：パイレンＰ２７６１、東洋紡績（株）製）にシリコーン処理を施し、剥離シートＣとした。貫通穿孔処理を施さない以外は実施例１と同様の操作を行い、粘着加工シートを得た。得られた粘着加工シートの物性を表１に示す。
[Comparative Example 1]
A release film C was obtained by subjecting a polypropylene film having a thickness of 60 μm (trade name: Pyrene P2761, manufactured by Toyobo Co., Ltd.) to silicone treatment. The same operation as in Example 1 was performed except that the through-piercing treatment was not performed, and an adhesive processed sheet was obtained. Table 1 shows the physical properties of the obtained pressure-sensitive adhesive processed sheet.
〔試験例〕
（小窪み部ｂ１陥没深さ、小突起部ｂ２突出高さ）
各実施例、比較例において粘着剤層Ｂ上に形成された小窪み部ｂ１の陥没深さ、小突起部ｂ２の突出高さを前述の方法により算出した。
（施工性）
各実施例、比較例の粘着加工シートの剥離シートＣを剥がし、透明で高平滑なガラス板に軽く貼り付けた後、再び剥離し、皺や糊残りがないか、剥離のし易さを以下の基準で判定した。
○：剥離しやすく、皺や糊残りは無い。
×：剥離時に抵抗があり、皺や糊残りが発生する。
（フクレ防止）
各実施例、比較例の粘着加工シートの剥離シートＣを剥がし、透明で高平滑なガラス板に軽く貼り付けた後、バレンを使用して手作業で圧着した際のフクレの有無を、目視にて以下の基準で判定した。
○：フクレの発生は見られない。
×：大きく不均一なフクレが発生する。
各試験例における評価、判定結果を表１に示す。
[Test example]
(Small depression b1 depression depth, small protrusion b2 protruding height)
In each of the examples and comparative examples, the depression depth of the small depression b1 formed on the pressure-sensitive adhesive layer B and the projection height of the small projection b2 were calculated by the method described above.
(Workability)
After peeling off the release sheet C of the adhesive processed sheet of each example and comparative example and affixing it lightly on a transparent and highly smooth glass plate, it was peeled again and there was no wrinkles or adhesive residue, or the ease of peeling was as follows: Judged by the criteria of.
○: Easy to peel off, no wrinkles or adhesive residue.
X: There is resistance at the time of peeling, and wrinkles and adhesive residue are generated.
(Anti-blowing prevention)
After peeling off the release sheet C of the adhesive processed sheet of each Example and Comparative Example and affixing it lightly on a transparent and highly smooth glass plate, the presence or absence of blisters when manually crimped using valene was visually observed. Based on the following criteria.
○: No occurrence of swelling.
X: Large and uneven swelling occurs.
Table 1 shows the evaluation and determination results in each test example.
１：シート基材Ａ
２：粘着剤層Ｂ
３：小窪み部ｂ１
４：小突起部ｂ２
５：基本平坦面
1: Sheet base material A
2: Adhesive layer B
3: Small hollow part b1
4: Small protrusion b2
5: Basic flat surface
Claims (10)
一つ以上の形状であることを特徴とする請求項１〜４の何れか１項に記載の粘着加工シート。 The basic flat surface of the small recess b1 and the cross-sectional shape in the horizontal direction are at least one shape selected from either a donut shape or a crescent shape, and the horizontal flat surface of the small protrusion b2 is in the horizontal direction. The pressure-sensitive adhesive sheet according to any one of claims 1 to 4, wherein the cross-sectional shape is at least one shape selected from the group consisting of a donut shape, a crescent shape, and a gourd shape.
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| JP2003356011A JP4841107B2 (en) | 2003-04-10 | 2003-10-16 | Adhesive processing sheet |
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| JP2003106356 | 2003-04-10 | ||
| JP2003356011A JP4841107B2 (en) | 2003-04-10 | 2003-10-16 | Adhesive processing sheet |
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| JP4841107B2 true JP4841107B2 (en) | 2011-12-21 |
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| JP4825404B2 (en) * | 2004-04-12 | 2011-11-30 | 王子タック株式会社 | Adhesive sheet and method for producing the same |
| JP4690670B2 (en) * | 2004-07-09 | 2011-06-01 | 王子タック株式会社 | Double-sided pressure-sensitive adhesive sheet and method for producing the same |
| JP4800675B2 (en) * | 2005-06-10 | 2011-10-26 | 積水化学工業株式会社 | Adhesive sheet material |
| JP5390157B2 (en) * | 2008-10-06 | 2014-01-15 | 矢崎総業株式会社 | Adhesive sheet and article |
| JP6652517B2 (en) * | 2017-02-23 | 2020-02-26 | 富士フイルム株式会社 | Film production method |
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| JPH07770B2 (en) * | 1986-05-07 | 1995-01-11 | 王子化工株式会社 | Breathable adhesive paper |
| JPH06238597A (en) * | 1993-02-10 | 1994-08-30 | Nidaiki Kk | Drilling device using thermal needle |
| US6197397B1 (en) * | 1996-12-31 | 2001-03-06 | 3M Innovative Properties Company | Adhesives having a microreplicated topography and methods of making and using same |
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