JP2013213123A - Method for manufacturing double-sided pressure-sensitive adhesive tape - Google Patents

Method for manufacturing double-sided pressure-sensitive adhesive tape Download PDF

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JP2013213123A
JP2013213123A JP2012083392A JP2012083392A JP2013213123A JP 2013213123 A JP2013213123 A JP 2013213123A JP 2012083392 A JP2012083392 A JP 2012083392A JP 2012083392 A JP2012083392 A JP 2012083392A JP 2013213123 A JP2013213123 A JP 2013213123A
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sensitive adhesive
pressure
layer
adhesive composition
photocurable
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JP5884608B2 (en
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Noboru Araki
荒木  登
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Dexerials Corp
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Abstract

PROBLEM TO BE SOLVED: To manufacture a double-sided pressure-sensitive adhesive tape having different adhesiveness between the front and the rear by a simple method, while using the same pressure-sensitive adhesive both on the front and on the rear.SOLUTION: This double-sided pressure-sensitive adhesive tape is manufactured as follows: a photocurable pressure-sensitive adhesive composition is applied onto a peeling film to form a first photocurable pressure-sensitive adhesive composition layer; a base material tape is laminated, and the photocurable pressure-sensitive adhesive composition is applied to form a second photocurable pressure-sensitive adhesive composition layer; further, a cover film is laminated and thereby the laminated tape is obtained; the laminated tape is irradiated with an active energy ray from one surface or both surfaces to optically cure the first photocurable pressure-sensitive adhesive composition layer and the second photocurable pressure-sensitive adhesive composition layer, and to thereby obtain a first pressure-sensitive adhesive layer and a second pressure-sensitive adhesive layer. In this case, application of the photocurable pressure-sensitive adhesive composition in step (A) and step (C) is performed so that the layer thickness of a layer which is expected to show stronger adhesiveness between the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer becomes greater.

Description

本発明は、表裏で粘着力が異なる両面粘着テープの製造方法に関する。   The present invention relates to a method for producing a double-sided pressure-sensitive adhesive tape having different adhesive strengths on the front and back sides.

両面粘着テープには、その取扱性や被接着材のリムーバブル性等の観点から表裏の粘着性を変えたものがある。   Some double-sided pressure-sensitive adhesive tapes have different front and back adhesive properties from the viewpoints of handleability and removable properties of the adherend.

従来、表裏の粘着性が異なる両面粘着テープは、一般的に、剥離テープに強粘着剤組成物を塗布硬化させて強粘着剤層を形成してロールに一旦巻き取り、次に、このロールから剥離テープ/強粘着剤層の積層テープを巻き出しながら、基材テープを強粘着剤層に積層し、更に基材テープ上に弱粘着剤組成物を塗布硬化させて弱粘着剤層を形成することにより製造されている。また、基材テープの両面に紫外線硬化型粘着剤組成物層を形成し、表面と裏面とで照射強度を変えて紫外線を照射する方法(特許文献1)や、粘着力が異なる2層以上の粘着層を重畳する方法(特許文献2)などが知られている。   Conventionally, double-sided pressure-sensitive adhesive tapes having different front and back adhesive properties generally have a strong pressure-sensitive adhesive composition coated and cured on a release tape to form a strong pressure-sensitive adhesive layer, which is then wound around a roll, and then from this roll. While unwinding the peeling tape / strong pressure-sensitive adhesive layer laminated tape, the base tape is laminated on the strong pressure-sensitive adhesive layer, and the weak pressure-sensitive adhesive composition is applied and cured on the base tape to form a weak pressure-sensitive adhesive layer. It is manufactured by. In addition, a method of forming an ultraviolet curable pressure-sensitive adhesive composition layer on both surfaces of a base tape and irradiating ultraviolet rays by changing irradiation intensity between the front surface and the back surface (Patent Document 1), or two or more layers having different adhesive forces A method of superposing an adhesive layer (Patent Document 2) is known.

特開2007−123624号公報JP 2007-123624 A 特開2007−107011号公報JP 2007-107011 A

しかしながら、剥離テープに強粘着剤層を形成してロールに一旦巻き取り、そのロールから剥離テープ/強粘着剤層の積層テープを引き出しながら、強粘着剤層に基材テープを積層した後に基材テープの表面に弱粘着剤層を新たに形成するという従来の一般的な両面粘着テープ製造方法では、操作が煩雑となり、また粘着剤組成物も2種類用意しなければならず、製造コストが高くなるという問題があった。また、表裏で紫外線の照射強度を変える方法(特許文献1)や、粘着力が異なる粘着層を積層する方法(特許文献2)では、表裏でそれぞれ異なる所期の粘着力を発揮させるための製造条件の設定が非常に難しいという問題があった。   However, after forming a strong pressure-sensitive adhesive layer on the release tape and winding it around a roll, and pulling out the release tape / strong pressure-sensitive adhesive layer laminated tape from the roll, the base material tape is laminated on the strong pressure-sensitive adhesive layer and then the base material In the conventional general double-sided pressure-sensitive adhesive tape manufacturing method in which a weak pressure-sensitive adhesive layer is newly formed on the surface of the tape, the operation becomes complicated, and two types of pressure-sensitive adhesive compositions must be prepared, resulting in high manufacturing costs. There was a problem of becoming. In addition, the method for changing the irradiation intensity of ultraviolet rays between the front and back (Patent Document 1) and the method of laminating adhesive layers having different adhesive strengths (Patent Document 2) are manufacturing methods for exhibiting different desired adhesive strengths on the front and back sides. There was a problem that setting conditions was very difficult.

本発明は、以上の従来の技術の問題点を解決しようとするものであり、表裏の粘着性が異なる両面粘着テープを、表裏で同じ粘着剤を使用しつつも、簡便な手法で製造できるようにすることを目的とする。   The present invention is intended to solve the above-described problems of the prior art, and allows double-sided adhesive tapes with different front and back adhesiveness to be manufactured by a simple method while using the same adhesive on the front and back sides. The purpose is to.

本発明者は、両面粘着テープの粘着剤層の厚みを、表面と裏面とで相違させることにより、層厚の厚い粘着剤層が層厚の薄い粘着剤層に比べ、材料としての粘着力は同じであるものの、両面粘着テープと被接着材との間の接着強度が高くなることを見出し、本発明を完成させるに至った。   The present inventor makes the adhesive strength as a material greater by comparing the thickness of the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape between the front surface and the back surface, compared with the pressure-sensitive adhesive layer having a thick layer. Although it is the same, it discovered that the adhesive strength between a double-sided adhesive tape and a to-be-adhered material became high, and came to complete this invention.

即ち、本発明は、基材テープの片面に光硬化性粘着剤組成物から形成された第1粘着剤層が形成され、他面に同じ光硬化性粘着剤組成物から形成された第2粘着剤層が形成された両面粘着テープの製造方法であって、以下の工程(A)〜(E):
<工程(A)>
剥離フィルム上に光硬化性粘着剤組成物を塗布して第1光硬化性粘着剤組成物層を形成する工程;
<工程(B)>
剥離フィルム上に形成された第1光硬化性粘着剤組成物層に、基材テープを積層する工程;
<工程(C)>
基材テープの表面に、光硬化性粘着剤組成物を塗布して第2光硬化性粘着剤組成物層を形成する工程;
<工程(D)>
第2光硬化性粘着剤組成物層にカバーフィルムを積層することにより、剥離フィルム/第1光硬化性粘着剤組成物層/基材テープ/第2光硬化性粘着剤組成物/カバーフィルムがこの順で積層された積層テープを得る工程;
<工程(E)>
工程(D)で得られた積層テープに対し、片面もしくは両面から活性エネルギー線を照射することにより、第1光硬化性粘着剤組成物層及び第2光硬化粘着剤組成物層を光硬化させてそれぞれ第1粘着剤層及び第2粘着剤層とする工程
を有し、
工程(A)及び工程(C)における光硬化性粘着剤組成物の塗布が、第1粘着剤層と第2粘着剤層とのうち、より強粘着性を示すべき層の方の層厚を厚くなるように行われる製造方法を提供する。
That is, in the present invention, a first pressure-sensitive adhesive layer formed from a photocurable pressure-sensitive adhesive composition is formed on one side of a base tape, and a second pressure-sensitive adhesive formed from the same photocurable pressure-sensitive adhesive composition on the other side. It is a manufacturing method of the double-sided adhesive tape in which the agent layer was formed, Comprising: The following processes (A)-(E):
<Process (A)>
Applying a photocurable pressure-sensitive adhesive composition on the release film to form a first photocurable pressure-sensitive adhesive composition layer;
<Process (B)>
A step of laminating a base tape on the first photocurable pressure-sensitive adhesive composition layer formed on the release film;
<Process (C)>
Applying a photocurable pressure-sensitive adhesive composition to the surface of the base tape to form a second photocurable pressure-sensitive adhesive composition layer;
<Process (D)>
By laminating a cover film on the second photocurable pressure-sensitive adhesive composition layer, a release film / first photocurable pressure-sensitive adhesive composition layer / base tape / second photocurable pressure-sensitive adhesive composition / cover film is obtained. Obtaining a laminated tape laminated in this order;
<Process (E)>
The first photocurable pressure-sensitive adhesive composition layer and the second photocurable pressure-sensitive adhesive composition layer are photocured by irradiating the laminated tape obtained in the step (D) with active energy rays from one side or both sides. Each having a step of forming a first pressure-sensitive adhesive layer and a second pressure-sensitive adhesive layer,
The application of the photocurable pressure-sensitive adhesive composition in the step (A) and the step (C) has a layer thickness of the layer that should exhibit stronger adhesion among the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer. Provided is a manufacturing method performed to be thick.

本発明の両面粘着テープの製造方法においては、基材テープの片面と他面とに同じ光硬化性粘着剤組成物の層を異なる層厚で形成し、光硬化させて互いに層厚が異なる粘着剤層を形成する。従って、本発明の両面粘着テープの製造方法によれば、粘着剤層の厚さを表裏で変えるだけなので、容易且つ低コストで両面粘着テープを製造することができる。しかも、両面粘着テープの一方の面のより強い粘着性を示すべき粘着剤層の厚みを他方の面の粘着剤層の厚みより厚くするので、両面の粘着剤層の粘着性が互いに相違するものとなる。   In the method for producing a double-sided pressure-sensitive adhesive tape of the present invention, the same photocurable pressure-sensitive adhesive composition layers are formed on one side and the other side of the base tape with different layer thicknesses, and are photocured to have different layer thicknesses. An agent layer is formed. Therefore, according to the method for producing a double-sided pressure-sensitive adhesive tape of the present invention, since the thickness of the pressure-sensitive adhesive layer is merely changed between the front and back sides, the double-sided pressure-sensitive adhesive tape can be produced easily and at low cost. Moreover, since the thickness of the pressure-sensitive adhesive layer on one side of the double-sided pressure-sensitive adhesive tape should be thicker than the thickness of the pressure-sensitive adhesive layer on the other side, the pressure-sensitive adhesive layers on both sides are different from each other. It becomes.

図1は、本発明の両面粘着テープの製造に使用する製造装置の概略図である。FIG. 1 is a schematic view of a production apparatus used for producing the double-sided pressure-sensitive adhesive tape of the present invention. 図2Aは、本発明の両面粘着テープの製造方法の工程(A)の説明図である。FIG. 2A is an explanatory diagram of step (A) of the method for producing a double-sided pressure-sensitive adhesive tape of the present invention. 図2Bは、本発明の両面粘着テープの製造方法の工程(B)の説明図である。FIG. 2B is an explanatory diagram of step (B) of the method for producing a double-sided pressure-sensitive adhesive tape of the present invention. 図2Cは、本発明の両面粘着テープの製造方法の工程(C)の説明図である。FIG. 2C is an explanatory diagram of step (C) of the method for producing a double-sided pressure-sensitive adhesive tape of the present invention. 図2Dは、本発明の両面粘着テープの製造方法の工程(D)の説明図である。FIG. 2D is an explanatory diagram of step (D) of the method for producing a double-sided pressure-sensitive adhesive tape of the present invention. 図2Eは、本発明の両面粘着テープの製造方法の工程(E)の説明図である。FIG. 2E is explanatory drawing of the process (E) of the manufacturing method of the double-sided adhesive tape of this invention. 図2Fは、本発明の両面粘着テープの製造方法の工程(E)の説明図である。FIG. 2F is explanatory drawing of the process (E) of the manufacturing method of the double-sided adhesive tape of this invention. 図3Aは、本発明の両面粘着テープの製造方法の工程(A)の説明図である。FIG. 3A is an explanatory diagram of step (A) of the method for producing a double-sided pressure-sensitive adhesive tape of the present invention. 図3Bは、本発明の両面粘着テープの製造方法の工程(B)の説明図である。FIG. 3B is an explanatory diagram of step (B) of the method for producing a double-sided pressure-sensitive adhesive tape of the present invention. 図3Cは、本発明の両面粘着テープの製造方法の工程(C)の説明図である。FIG. 3C is an explanatory diagram of step (C) of the method for producing a double-sided pressure-sensitive adhesive tape of the present invention. 図3Dは、本発明の両面粘着テープの製造方法の工程(D)の説明図である。FIG. 3D is an explanatory diagram of a step (D) of the method for producing a double-sided pressure-sensitive adhesive tape of the present invention. 図3Eは、本発明の両面粘着テープの製造方法の工程(E)の説明図である。FIG. 3E is explanatory drawing of the process (E) of the manufacturing method of the double-sided adhesive tape of this invention. 図3Fは、本発明の両面粘着テープの製造方法の工程(E)の説明図である。FIG. 3F is explanatory drawing of the process (E) of the manufacturing method of the double-sided adhesive tape of this invention.

以下、本発明の両面粘着テープの製造方法を、図面を参照しながら工程毎に具体的に説明するが、その前に、図1に、本発明の両面粘着テープの製造方法に適用できる両面粘着テープ製造装置の概略図を示す。この製造装置100は、剥離フィルム供給ユニット10、第1塗布ユニット20と、基材テープ供給ユニット30と、第2塗布ユニット40と、カバーフィルム供給ユニット50と、光照射ユニット60と、両面粘着テープ巻き取りユニット70とを有する。場合により、剥離フィルム回収ユニット80を有していてもよい。各ユニットとしては、公知のユニットを適用することができる。   Hereinafter, although the manufacturing method of the double-sided adhesive tape of this invention is demonstrated concretely for every process, referring drawings, before that, the double-sided adhesive which can be applied to the manufacturing method of the double-sided adhesive tape of this invention is shown in FIG. The schematic of a tape manufacturing apparatus is shown. The manufacturing apparatus 100 includes a release film supply unit 10, a first application unit 20, a base tape supply unit 30, a second application unit 40, a cover film supply unit 50, a light irradiation unit 60, and a double-sided adhesive tape. A take-up unit 70. In some cases, a release film recovery unit 80 may be included. As each unit, a known unit can be applied.

(工程(A))
まず、図2Aに示すように、剥離フィルム1上に光硬化性粘着剤組成物を塗布して第1光硬化性粘着剤組成物層2を形成する。具体的には、図3Aに示すように、剥離フィルム供給ユニット10から供給された剥離フィルム1の片面に第1塗布ユニット20から光硬化性粘着剤組成物を塗布して第1光硬化性粘着剤組成物層を形成する。
(Process (A))
First, as shown to FIG. 2A, a photocurable adhesive composition is apply | coated on the peeling film 1, and the 1st photocurable adhesive composition layer 2 is formed. Specifically, as shown in FIG. 3A, the first photocurable adhesive is prepared by applying the photocurable adhesive composition from the first application unit 20 to one side of the release film 1 supplied from the release film supply unit 10. An agent composition layer is formed.

光硬化性粘着剤組成物の塗布方法として、ロールコーティング法、フローコーティング法等の公知の塗布方法を採用することができる。   As a coating method of the photocurable pressure-sensitive adhesive composition, a known coating method such as a roll coating method or a flow coating method can be employed.

剥離フィルム1としては、市販の剥離フィルムを使用することができ、例えば、上質紙にポリエチレンコートとシリコーンコートを順次行った剥離紙や、剥離処理プラスチックフィルム等を使用することができる。   As the release film 1, a commercially available release film can be used. For example, a release paper obtained by sequentially performing a polyethylene coat and a silicone coat on high-quality paper, a release-treated plastic film, or the like can be used.

剥離フィルム1の厚みとしては、両面粘着テープの用途等により異なるが、通常12〜300μm、好ましくは25〜100μmである。   The thickness of the release film 1 varies depending on the use of the double-sided pressure-sensitive adhesive tape, but is usually 12 to 300 μm, preferably 25 to 100 μm.

第1光硬化性粘着剤組成物層2の厚みは、両面粘着テープの用途等により異なるが、通常10〜300μm、好ましくは25〜200μmである。   Although the thickness of the 1st photocurable adhesive composition layer 2 changes with uses etc. of a double-sided adhesive tape, it is 10-300 micrometers normally, Preferably it is 25-200 micrometers.

光硬化性粘着剤組成物としては、例えば、次の成分(A)〜(D):
(A)アクリレート系モノマー;
(B)成分(A)のアクリレート系モノマーと共重合可能なモノマー;
(C)光重合開始剤; 及び
(D)光架橋剤
を含有するものを好ましく挙げることができる。
Examples of the photocurable pressure-sensitive adhesive composition include the following components (A) to (D):
(A) an acrylate monomer;
(B) a monomer copolymerizable with the acrylate monomer of component (A);
Preferable examples include (C) a photopolymerization initiator; and (D) a photopolymerization initiator.

成分(A)のアクリレート系モノマーとしては、アルキル基の炭素数が1〜14、好ましくは4〜12のアクリル酸アルキルエステル又はメタクリル酸アルキルエステル(以下、これらを(メタ)アクリル酸アルキルエステルともいう)が好ましい。より具体的には、(メタ)ブチル(メタ)アクリレート、イソアミル(メタ)アクリレート、2−エチルヘキシル(メタ)アクリレート、ノニル(メタ)アクリレート、イソノニル(メタ)アクリレート、イソオクチル(メタ)アクリレート、ラウリル(メタ)アクリレート、デシル(メタ)アクリレート等があり、これらの1種又は2種以上を使用することができる。   As the acrylate monomer of component (A), an alkyl group having 1 to 14 carbon atoms, preferably 4 to 12 alkyl acrylates or methacrylic acid alkyl esters (hereinafter also referred to as (meth) acrylic acid alkyl esters). ) Is preferred. More specifically, (meth) butyl (meth) acrylate, isoamyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, nonyl (meth) acrylate, isononyl (meth) acrylate, isooctyl (meth) acrylate, lauryl (meth) ) Acrylate, decyl (meth) acrylate, and the like, and one or more of these can be used.

成分(A)のアクリレート系モノマーと共重合可能な成分(B)のモノマーとしては、(メタ)アクリル酸、N−ビニルピロリドン、イタコン酸、テトラヒドロフルフリルアクリレート、エチル(メタ)アクリレート、2−ヒドロキシエチル(メタ)アクリレート、2−ヒドロキシプロピル(メタ)アクリレート、イソボニル(メタ)アクリレート、エトキシエチル(メタ)アクリレート、ブトキシエチル(メタ)アクリレート、フェノキシエチル(メタ)アクリレート、フェニル(メタ)アクリレート、シクロヘキシル(メタ)アクリレート等を挙げることができ、これらの1種又は2種以上を使用することができる。   As the monomer of the component (B) copolymerizable with the acrylate monomer of the component (A), (meth) acrylic acid, N-vinylpyrrolidone, itaconic acid, tetrahydrofurfuryl acrylate, ethyl (meth) acrylate, 2-hydroxy Ethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, isobornyl (meth) acrylate, ethoxyethyl (meth) acrylate, butoxyethyl (meth) acrylate, phenoxyethyl (meth) acrylate, phenyl (meth) acrylate, cyclohexyl ( (Meth) acrylate etc. can be mentioned, These 1 type (s) or 2 or more types can be used.

成分(C)の光重合開始剤としては、アセトフェノン系光重合開始剤又はベンゾフェノン系光重合開始剤を好ましく使用することができ、具体的には、4−フェノキシジシクロアセトフェノン、4−t−ブチル−ジクロロアセトフェノン、ジフェノキシアセトフェノン、2−ヒドロキシ−2−メチル−1−フェニルプロパン−1−オン、1−ヒドロキシシクロヘキシルフェニルケトン、ベンゾイン、ベンゾインメチルエーテル、ベンゾインイソブチルエーテル、ベンジルメチルケタール、2,2−ジメトキシ−1,2−ジフェニルエタン−1−オン等を挙げることができ、これらの1種又は2種以上を使用することができる。   As the photopolymerization initiator of component (C), an acetophenone photopolymerization initiator or a benzophenone photopolymerization initiator can be preferably used. Specifically, 4-phenoxydicycloacetophenone, 4-t-butyl -Dichloroacetophenone, diphenoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, benzoin, benzoin methyl ether, benzoin isobutyl ether, benzyl methyl ketal, 2,2- Examples thereof include dimethoxy-1,2-diphenylethane-1-one, and one or more of these can be used.

成分(D)の光架橋剤としては、公知の光架橋剤を使用でき、好ましくは多官能(メタ)アクリレートを使用することができる。   As the photocrosslinking agent of component (D), a known photocrosslinking agent can be used, and polyfunctional (meth) acrylate can be preferably used.

この他、光硬化性粘着剤組成物には、成分(E)として、ロジン系タッキファイヤー、テルペン系タッキファイヤー、テルペンフェノール系タッキファイヤー等のタッキファイヤーを含有させることができ、さらに必要に応じて難燃剤や無機フィラー等を含有させることができる。   In addition, the photocurable pressure-sensitive adhesive composition may contain a tackifier such as rosin tackifier, terpene tackifier, terpene phenol tackifier, and the like as component (E). A flame retardant, an inorganic filler, etc. can be contained.

成分(A)のアクリレート系モノマーと、成分(B)の成分(A)と共重合可能なモノマーとの配合割合は、成分(A)100重量部に対して成分(B)を1〜20重量部とすることが好ましい。   The blending ratio of the acrylate monomer of component (A) and the monomer copolymerizable with component (A) of component (B) is 1 to 20 weights of component (B) with respect to 100 parts by weight of component (A). Part.

光硬化性粘着剤組成物は、塗布性や後述する基材シートへの含浸性等の観点から粘度を500〜3500mPa・sec(B型粘度計、ロータNo.3、20rpm、25℃)に調整することが好ましい。   The photocurable pressure-sensitive adhesive composition has a viscosity adjusted to 500 to 3500 mPa · sec (B-type viscometer, rotor No. 3, 20 rpm, 25 ° C.) from the viewpoints of applicability and impregnation into a substrate sheet described later. It is preferable to do.

(工程(B)) (Process (B))

次に、図2Bに示すように、剥離フィルム1上に形成された第1光硬化性粘着剤組成物層2に、基材テープ3を積層する。具体的には、図3Bに示すように、剥離フィルム1上の第1光硬化性粘着剤組成物層2に基材テープ供給ユニット30から供給された基材テープ3を積層する。   Next, as shown in FIG. 2B, the base tape 3 is laminated on the first photocurable pressure-sensitive adhesive composition layer 2 formed on the release film 1. Specifically, as shown in FIG. 3B, the base tape 3 supplied from the base tape supply unit 30 is laminated on the first photocurable pressure-sensitive adhesive composition layer 2 on the release film 1.

基材テープ3としては、両面粘着テープの心材テープとして使用されている公知のものを使用することができ、例えば、光硬化性粘着剤組成物を含浸しない材料から形成されたものや、光硬化性粘着剤組成物を含浸し得る材料から形成されたものを使用することができる。特に、光硬化性粘着剤組成物を含浸し得る材料から形成された基材テープ3は、基材テープ3と後述する粘着剤層との間の接着強度をより高めることができるので好ましい。   As the base tape 3, a known tape used as a core tape of a double-sided pressure-sensitive adhesive tape can be used. For example, a tape formed from a material not impregnated with a photo-curable pressure-sensitive adhesive composition or a photo-curing material can be used. What was formed from the material which can be impregnated with an adhesive composition can be used. In particular, the base tape 3 formed from a material that can be impregnated with the photocurable pressure-sensitive adhesive composition is preferable because the adhesive strength between the base tape 3 and the pressure-sensitive adhesive layer described later can be further increased.

また、基材テープ3の厚みは、両面粘着テープの用途等により異なるが、通常、5〜300μm、好ましくは12〜100μmである。   Moreover, although the thickness of the base-material tape 3 changes with uses etc. of a double-sided adhesive tape, it is 5-300 micrometers normally, Preferably it is 12-100 micrometers.

光硬化性粘着剤組成物を含浸しない材料から形成された基材テープとしては、非多孔性ポリエステルフィルム、非多孔性ポリイミドフィルム、非多孔性ポリアミドフィルム、非多孔性ポリオレフィンフィルム等が挙げられる。これらの非多孔性フィルムは、JIS B0601による表面粗度(中心線平均粗さ)が0.01〜0.50μmであることが、基材テープと粘着剤層との間の接着強度を向上させることができるので好ましい。   Examples of the base tape formed from a material not impregnated with the photocurable pressure-sensitive adhesive composition include non-porous polyester film, non-porous polyimide film, non-porous polyamide film, non-porous polyolefin film and the like. These non-porous films have a surface roughness (centerline average roughness) according to JIS B0601 of 0.01 to 0.50 μm to improve the adhesive strength between the base tape and the pressure-sensitive adhesive layer. This is preferable.

また、光硬化性粘着剤組成物を含浸し得る材料から形成された基材テープとしては、多孔性ポリエステルフィルム、多孔性ポリイミドフィルム、多孔性ポリアミドフィルム、多孔性ポリオレフィンフィルム、ポリエステル繊維、ポリイミド繊維、ポリアミド繊維、ポリオレフィン繊維などからなる不織布、洋紙、和紙等を挙げることができる。これらの光硬化性粘着剤組成物を含浸し得る材料から形成された基材テープの中でも、入手容易性及び低コストの点から不織布を特に好ましく使用することができ、具体的には、繊度0.1〜10dTのポリオレフィン系繊維(特にポリプロピレン繊維)を用い、坪量17〜35g/m、好ましくは18〜30g/mのメルトブロー又はスパンボンド不織布を好ましく使用することができる。 In addition, as a base tape formed from a material that can be impregnated with a photocurable pressure-sensitive adhesive composition, a porous polyester film, a porous polyimide film, a porous polyamide film, a porous polyolefin film, a polyester fiber, a polyimide fiber, Nonwoven fabrics made of polyamide fiber, polyolefin fiber, etc., Western paper, Japanese paper and the like can be mentioned. Among substrate tapes formed from materials that can be impregnated with these photocurable pressure-sensitive adhesive compositions, nonwoven fabrics can be particularly preferably used from the viewpoint of availability and low cost. A melt blown or spunbonded nonwoven fabric having a basis weight of 17 to 35 g / m 2 , preferably 18 to 30 g / m 2 , can be preferably used, using polyolefin fibers (particularly polypropylene fibers) of 1 to 10 dT.

(工程(C))
次に、図2Cに示すように、基材テープ3の他面に、第1光硬化性粘着剤組成物層2を形成した際に使用したものと同じ光硬化性粘着剤組成物を塗布して第2光硬化性粘着剤組成物層4を形成する。具体的には、図3Cに示すように、基材テープ供給ユニット30から供給された基材テープ3の表面に、第2塗布ユニット40から光硬化性粘着剤組成物を塗布して第2光硬化性粘着剤組成物層4を形成する。
(Process (C))
Next, as shown in FIG. 2C, the same photocurable adhesive composition as that used when the first photocurable adhesive composition layer 2 was formed on the other surface of the base tape 3 was applied. Then, the second photocurable pressure-sensitive adhesive composition layer 4 is formed. Specifically, as shown in FIG. 3C, the second light is applied to the surface of the base tape 3 supplied from the base tape supply unit 30 by applying the photocurable adhesive composition from the second application unit 40. The curable adhesive composition layer 4 is formed.

光硬化性粘着剤組成物の塗布方法として、工程(A)の場合と同様に、ロールコーティング法、フローコーティング法等の公知の塗布方法を採用することができる。   As a method for applying the photocurable pressure-sensitive adhesive composition, a known coating method such as a roll coating method or a flow coating method can be employed as in the case of the step (A).

第2光硬化性粘着剤組成物層4の厚みは、両面粘着テープの用途などにより異なるが、通常200〜400μm、好ましくは250〜350μmである。   Although the thickness of the 2nd photocurable adhesive composition layer 4 changes with uses of a double-sided adhesive tape, etc., it is 200-400 micrometers normally, Preferably it is 250-350 micrometers.

(工程(D))
次に、図2Dに示すように、第2光硬化性粘着剤組成物層4にカバーフィルム5を積層する。これにより、剥離フィルム/第1光硬化性粘着剤組成物層/基材テープ/第2光硬化性粘着剤組成物/カバーフィルムがこの順で積層された積層テープFを得る。具体的には、図3Dに示すように、第2光硬化性粘着剤組成物層4の表面に、カバーフィルム供給ユニット50から供給されたカバーフィルム5を積層する。
(Process (D))
Next, as shown in FIG. 2D, a cover film 5 is laminated on the second photocurable pressure-sensitive adhesive composition layer 4. As a result, a laminated tape F in which the release film / first photocurable pressure-sensitive adhesive composition layer / base tape / second photocurable pressure-sensitive adhesive composition / cover film is laminated in this order is obtained. Specifically, as shown in FIG. 3D, the cover film 5 supplied from the cover film supply unit 50 is laminated on the surface of the second photocurable pressure-sensitive adhesive composition layer 4.

カバーフィルム5は、剥離フィルム1を取り去った両面粘着テープをロール状に巻き取った場合、重なった両面粘着テープの表面と裏面とが接着してしまうことを防止するためのものであり、両面粘着テープの使用の際には除去されてしまうものである。このようなカバーフィルムとしては、剥離処理したポリエチレンテレフタレートフィルムや、ポリプロピレンフィルムなどを挙げることができる。   The cover film 5 is for preventing the double-sided pressure-sensitive adhesive tape from adhering to the front and back surfaces when the double-sided pressure-sensitive adhesive tape from which the release film 1 has been removed is rolled up. It is removed when the tape is used. Examples of such a cover film include a polyethylene terephthalate film subjected to a release treatment and a polypropylene film.

カバーフィルム5の厚みとしては、通常、12〜300μm、好ましくは25〜100μmである。   As thickness of the cover film 5, it is 12-300 micrometers normally, Preferably it is 25-100 micrometers.

(工程(E))
次に、図2Eに示すように、工程(D)で得られた積層テープFに対し、片面もしくは両面から活性エネルギー線(好ましくは紫外線UV)を照射することにより、第1光硬化性粘着剤組成物層2及び第2光硬化粘着剤組成物層4を光硬化させてそれぞれ第1粘着剤層6及び第2粘着剤層7とする(図2F)。具体的には、図3Eに示すように、カバーフィルム5が積層された積層テープFを、光照射ユニット60に投入し、積層シートFの片面又は両面から紫外線UV等の活性エネルギー線を照射し、第1光硬化性粘着剤組成物層2及び第2光硬化粘着剤組成物層4を光硬化させてそれぞれ第1粘着剤層6及び第2粘着剤層7とする。これにより、剥離シート1とカバーフィルム5とに挟持された両面粘着テープ8が得られる。
(Process (E))
Next, as shown in FIG. 2E, the first photocurable pressure-sensitive adhesive is obtained by irradiating the laminated tape F obtained in the step (D) with active energy rays (preferably ultraviolet rays UV) from one side or both sides. The composition layer 2 and the second photocuring pressure-sensitive adhesive composition layer 4 are photocured to form a first pressure-sensitive adhesive layer 6 and a second pressure-sensitive adhesive layer 7, respectively (FIG. 2F). Specifically, as shown in FIG. 3E, the laminated tape F on which the cover film 5 is laminated is put into the light irradiation unit 60 and irradiated with active energy rays such as ultraviolet rays UV from one side or both sides of the laminated sheet F. The first photocurable pressure-sensitive adhesive composition layer 2 and the second photocurable pressure-sensitive adhesive composition layer 4 are photocured to form a first pressure-sensitive adhesive layer 6 and a second pressure-sensitive adhesive layer 7, respectively. Thereby, the double-sided adhesive tape 8 clamped between the release sheet 1 and the cover film 5 is obtained.

なお、図3Fに示すように、光照射ユニット60から搬送された両面粘着テープ8は、両面粘着テープ巻き取りユニット70に搬送されてロール状に巻き取られる。この場合、好ましくは剥離フィルム1を、両面粘着テープ8から剥離しつつ剥離フィルム回収ユニット80で巻き取ることができる。   In addition, as shown to FIG. 3F, the double-sided adhesive tape 8 conveyed from the light irradiation unit 60 is conveyed by the double-sided adhesive tape winding unit 70, and is wound up in roll shape. In this case, preferably, the release film 1 can be wound up by the release film collection unit 80 while being peeled from the double-sided pressure-sensitive adhesive tape 8.

以上説明した本発明の両面粘着テープの製造方法においては、前述した工程(A)及び工程(C)における光硬化性粘着剤組成物の塗布が、第1粘着剤層6と第2粘着剤層7とのうち、より強粘着性を示すべき層の方の層厚が厚くなるように行われる。好ましくは前者の厚みが後者の厚みの2〜30倍、より好ましくは3〜20倍となるように行う。この調整は、第1光硬化性粘着組成物層2の形成厚さの調整、第2光硬化性粘着組成物層4の形成厚さの調整、含浸量の異なる基材テープ3の選択、第1光硬化性粘着剤組成物層2を形成してから第2光硬化性粘着剤組成物層4を形成するまでの時間の長短の調整、光硬化性粘着剤組成物の粘度の調整等により行うことができる。   In the manufacturing method of the double-sided pressure-sensitive adhesive tape of the present invention described above, the application of the photocurable pressure-sensitive adhesive composition in the steps (A) and (C) described above is performed by the first pressure-sensitive adhesive layer 6 and the second pressure-sensitive adhesive layer. 7 is performed so that the layer thickness of the layer that should exhibit stronger adhesion becomes thicker. Preferably, the former thickness is 2 to 30 times, more preferably 3 to 20 times the latter thickness. This adjustment includes adjustment of the formation thickness of the first photocurable pressure-sensitive adhesive composition layer 2, adjustment of the formation thickness of the second photocurable pressure-sensitive adhesive composition layer 4, selection of the base tape 3 having a different impregnation amount, By adjusting the length of time from the formation of the first photocurable pressure-sensitive adhesive composition layer 2 to the formation of the second photocurable pressure-sensitive adhesive composition layer 4, adjustment of the viscosity of the photocurable pressure-sensitive adhesive composition, etc. It can be carried out.

以下、実施例に基づき、本発明を具体的に説明する。   Hereinafter, based on an Example, this invention is demonstrated concretely.

実施例1
表1の成分を、プロペラ攪拌機を用いて均一に混合することにより、B型粘度計(ロータNo.3、20rpm)で測定した粘度(25℃)が1200mPa・sである光硬化性粘着剤組成物を得た。
Example 1
A photocurable pressure-sensitive adhesive composition having a viscosity (25 ° C.) of 1200 mPa · s measured with a B-type viscometer (rotor No. 3, 20 rpm) by uniformly mixing the components in Table 1 using a propeller stirrer. I got a thing.

Figure 2013213123
Figure 2013213123

得られた光硬化性粘着剤組成物を、50μm厚の剥離処理ポリエチレンテレフタレートフィルム(PET50GS、リンテック社製)の上面に、ロールコータを用いて表2の光硬化後の裏面粘着剤層厚となるように塗布して裏面光硬化性粘着剤組成物層を形成した。この裏面光硬化性粘着剤組成物層上に、基材テープとして50μm厚のポリエチレンテレフタレートフィルム(エムブレッドS50、ユニチカ社製)を重ね、1kg/cmの線圧を掛けて接着し、更に基材テープの表面に、同じ光硬化性粘着剤組成物をロールコータを用いて表2の光硬化後の表面粘着剤層厚となるように塗布して表面光硬化性粘着剤組成物層を形成した。続いて、この表面光硬化性粘着剤組成物層上に、カバーフィルムとして50μm厚のポリエチレンテレフタレートフィルムを重ね、1kg/cmの線圧を掛けて接着して積層テープを作成した。この積層テープを、紫外線照射ユニットに投入し、最高照度30mW/cmで、積算光量が2000mJ/cmとなるように紫外線をカバーフィルム側から照射して、光硬化性粘着剤組成物層を光硬化させて裏面粘着剤層と表面粘着剤層を形成し、2cm幅にスリットすることにより両面粘着テープ(サンプル1〜4)を得た。 The obtained photocurable pressure-sensitive adhesive composition has the thickness of the back surface pressure-sensitive adhesive layer after photocuring shown in Table 2 on the upper surface of a 50 μm-thick release-treated polyethylene terephthalate film (PET50GS, manufactured by Lintec) using a roll coater. It applied so that the back surface photocurable adhesive composition layer was formed. A 50 μm-thick polyethylene terephthalate film (Mbread S50, manufactured by Unitika Co., Ltd.) is laminated as a base tape on this back surface photocurable pressure-sensitive adhesive composition layer, and bonded by applying a linear pressure of 1 kg / cm. The same photocurable pressure-sensitive adhesive composition was applied to the surface of the tape using a roll coater so as to have the thickness of the surface pressure-sensitive adhesive layer after photocuring shown in Table 2 to form a surface photocurable pressure-sensitive adhesive composition layer. Subsequently, a 50 μm-thick polyethylene terephthalate film was laminated as a cover film on the surface photocurable pressure-sensitive adhesive composition layer and adhered by applying a linear pressure of 1 kg / cm to prepare a laminated tape. This laminated tape is put into an ultraviolet irradiation unit, irradiated with ultraviolet rays from the cover film side so that the integrated light quantity becomes 2000 mJ / cm 2 at a maximum illuminance of 30 mW / cm 2 , and a photocurable pressure-sensitive adhesive composition layer is formed. A double-sided pressure-sensitive adhesive tape (samples 1 to 4) was obtained by photocuring to form a back surface pressure-sensitive adhesive layer and a surface pressure-sensitive adhesive layer, and slitting to a width of 2 cm.

(180度剥離試験)
得られた両面粘着テープの裏面又は表面を鏡面仕上げのステンレススチール板(SUS304)に線圧2kg/cmを加えて貼り付け、反対面にバッキングシートを同様に貼り付けた後、バッキングシートを180度方向へ300mm/分の速度で引き剥がし、引き剥がしに要した力[N/2cm]を、万能試験機(テンシロンRFG−1225、エー・アンド・デー社製)を用いて測定した。得られた結果を表2に示す。
(180 degree peel test)
The back or front surface of the resulting double-sided adhesive tape was applied to a mirror-finished stainless steel plate (SUS304) by applying a linear pressure of 2 kg / cm, and a backing sheet was similarly attached to the opposite surface, and then the backing sheet was 180 degrees. The film was peeled in the direction at a speed of 300 mm / min, and the force [N / 2 cm] required for peeling was measured using a universal testing machine (Tensilon RFG-1225, manufactured by A & D). The obtained results are shown in Table 2.

(VT(Vertical Tensile(垂直引き剥がし))剥離試験)
幅2cm、長さ5cm、厚み2mmの鏡面仕上げステンレススチール板(SUS304)を2枚用意し、これらを2cm角の両面粘着テープで十字状に貼り付けて、それぞれの両面粘着テープについて10個のサンプルを作成した。サンプルの一方の板(裏面板)を固定し、他方の板(表面板)を上方に上記の万能試験機を用いて10mm/分という力で引き上げ、ステンレススチール板が剥がれたサンプルの数をカウントした。得られた結果を表2に示す。
(VT (Vertical Tensile) peel test)
Two mirror-finished stainless steel plates (SUS304) with a width of 2 cm, a length of 5 cm, and a thickness of 2 mm are prepared, and these are attached in a cross shape with a 2 cm square double-sided adhesive tape, and 10 samples for each double-sided adhesive tape. It was created. One plate (back plate) of the sample is fixed, and the other plate (front plate) is pulled upward with a force of 10 mm / min using the above universal testing machine, and the number of samples from which the stainless steel plate has been peeled is counted. did. The obtained results are shown in Table 2.

Figure 2013213123
Figure 2013213123

表2からわかるように、実施例1で作成したサンプル1〜4については、同じ光硬化性粘着剤組成物を使用しながらも、表面と裏面とで異なる粘着性を示す両面粘着テープを簡便にしかも低いコストで製造することができた。   As can be seen from Table 2, for samples 1 to 4 prepared in Example 1, a double-sided pressure-sensitive adhesive tape showing different adhesiveness between the front and back surfaces can be easily used while using the same photocurable pressure-sensitive adhesive composition. Moreover, it could be manufactured at a low cost.

実施例2
基材テープとして、粘着剤含浸性の不織布(繊度4dTのポリプロピレン系繊維を用い、坪量23g/mのメルトブロー不織布)を使用すること以外、実施例1と同様にして両面粘着テープ(サンプル5〜8)を作成した。これらの両面粘着テープは、基材テープである不織布に光硬化性粘着剤組成物が含浸したため、形成厚が薄くなった。得られたサンプル5〜8について、実施例1と同様に180度剥離試験とVT剥離試験とを行い、得られた結果を表3に示す。
Example 2
A double-sided pressure-sensitive adhesive tape (Sample 5) was used in the same manner as in Example 1 except that an adhesive-impregnated nonwoven fabric (polypropylene fiber having a fineness of 4 dT and a melt-blown nonwoven fabric having a basis weight of 23 g / m 2 ) was used as the base tape. To 8). Since these double-sided adhesive tapes were impregnated with a non-woven fabric, which is a base tape, with a photocurable adhesive composition, the thickness of the double-sided adhesive tape was reduced. About the obtained samples 5-8, a 180 degree | times peeling test and a VT peeling test were done like Example 1, and the obtained result is shown in Table 3.

Figure 2013213123
Figure 2013213123

表3からわかるように、実施例1で作成したサンプル5〜8については、同じ光硬化性粘着剤組成物を使用しながらも、表面と裏面とで異なる粘着性を示す両面粘着テープを簡便にしかも低いコストで製造することができた。   As can be seen from Table 3, for Samples 5 to 8 prepared in Example 1, a double-sided pressure-sensitive adhesive tape showing different adhesiveness between the front and back surfaces can be easily used while using the same photocurable pressure-sensitive adhesive composition. Moreover, it could be manufactured at a low cost.

本発明の両面粘着テープの製造方法においては、基材テープの片面と他面とに同じ光硬化性粘着剤組成物の層を異なる層厚で形成し、光硬化させて互いに層厚が異なる粘着剤層を形成する。従って、本発明の両面粘着テープの製造方法によれば、容易且つ低コストで両面粘着テープを製造することができる。しかも、層厚の厚い粘着剤層が薄い粘着剤層に比べ、両面粘着テープと接着対象材との間の接着強度を高くすることができる。よって、表裏の粘着性が異なる両面粘着テープを、表裏で同じ粘着剤を使用しつつも、簡便な手法で製造できる。   In the method for producing a double-sided pressure-sensitive adhesive tape of the present invention, the same photocurable pressure-sensitive adhesive composition layers are formed on one side and the other side of the base tape with different layer thicknesses, and are photocured to have different layer thicknesses. An agent layer is formed. Therefore, according to the manufacturing method of the double-sided adhesive tape of this invention, a double-sided adhesive tape can be manufactured easily and at low cost. Moreover, the adhesive strength between the double-sided pressure-sensitive adhesive tape and the material to be bonded can be increased as compared with the pressure-sensitive adhesive layer having a thick adhesive layer. Therefore, a double-sided pressure-sensitive adhesive tape having different front and back adhesiveness can be produced by a simple method while using the same pressure-sensitive adhesive on the front and back.

1 剥離フィルム
2 第1光硬化性粘着剤組成物層
3 基材テープ
4 第2光硬化性樹脂組成物層
5 カバーフィルム
6 第1粘着剤層
7 第2粘着剤層
8 両面粘着テープ
F 積層テープ
10 剥離フィルム供給ユニット
20 第1塗布ユニット
30 基材テープ供給ユニット
40 第2塗布ユニット
50 カバーフィルム供給ユニット
60 光照射ユニット
70 両面粘着テープ巻き取りユニット
80 剥離フィルム回収ユニット
100 両面粘着テープ製造装置
DESCRIPTION OF SYMBOLS 1 Release film 2 1st photocurable adhesive composition layer 3 Base material tape 4 2nd photocurable resin composition layer 5 Cover film 6 1st adhesive layer 7 2nd adhesive layer 8 Double-sided adhesive tape F Laminated tape DESCRIPTION OF SYMBOLS 10 Release film supply unit 20 1st application unit 30 Base tape supply unit 40 2nd application unit 50 Cover film supply unit 60 Light irradiation unit 70 Double-sided adhesive tape winding unit 80 Release film collection unit 100 Double-sided adhesive tape manufacturing apparatus

Claims (7)

基材テープの片面に光硬化性粘着剤組成物から形成された第1粘着剤層が形成され、他面に同じ光硬化性粘着剤組成物から形成された第2粘着剤層が形成された両面粘着テープの製造方法であって、以下の工程(A)〜(E):
<工程(A)>
剥離フィルム上に光硬化性粘着剤組成物を塗布して第1光硬化性粘着剤組成物層を形成する工程;
<工程(B)>
剥離フィルム上に形成された第1光硬化性粘着剤組成物層に、基材テープを積層する工程;
<工程(C)>
基材テープの表面に、光硬化性粘着剤組成物を塗布して第2光硬化性粘着剤組成物層を形成する工程;
<工程(D)>
第2光硬化性粘着剤組成物層にカバーフィルムを積層することにより、剥離フィルム/第1光硬化性粘着剤組成物層/基材テープ/第2光硬化性粘着剤組成物/カバーフィルムがこの順で積層された積層テープを得る工程;
<工程(E)>
工程(D)で得られた積層テープに対し、片面もしくは両面から活性エネルギー線を照射することにより、第1光硬化性粘着剤組成物層及び第2光硬化性粘着剤組成物層を光硬化させてそれぞれ第1粘着剤層及び第2粘着剤層とする工程
を有し、
工程(A)及び工程(C)における光硬化性粘着剤組成物の塗布が、第1粘着剤層と第2粘着剤層とのうち、より強粘着性を示すべき層の方の層厚を厚くなるように行われる製造方法。
A first pressure-sensitive adhesive layer formed from the photocurable pressure-sensitive adhesive composition was formed on one side of the base tape, and a second pressure-sensitive adhesive layer formed from the same photocurable pressure-sensitive adhesive composition was formed on the other side. It is a manufacturing method of a double-sided adhesive tape, Comprising: The following processes (A)-(E):
<Process (A)>
Applying a photocurable pressure-sensitive adhesive composition on the release film to form a first photocurable pressure-sensitive adhesive composition layer;
<Process (B)>
A step of laminating a base tape on the first photocurable pressure-sensitive adhesive composition layer formed on the release film;
<Process (C)>
Applying a photocurable pressure-sensitive adhesive composition to the surface of the base tape to form a second photocurable pressure-sensitive adhesive composition layer;
<Process (D)>
By laminating a cover film on the second photocurable pressure-sensitive adhesive composition layer, a release film / first photocurable pressure-sensitive adhesive composition layer / base tape / second photocurable pressure-sensitive adhesive composition / cover film is obtained. Obtaining a laminated tape laminated in this order;
<Process (E)>
The first photocurable pressure-sensitive adhesive composition layer and the second photocurable pressure-sensitive adhesive composition layer are photocured by irradiating the laminated tape obtained in the step (D) with active energy rays from one side or both sides. The first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer,
The application of the photocurable pressure-sensitive adhesive composition in the step (A) and the step (C) has a layer thickness of the layer that should exhibit stronger adhesion among the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer. Manufacturing method performed to be thick.
第1粘着剤層と第2粘着剤層とのうち、より強粘着性を示す層の層厚が、他方の層の層厚の2〜30倍である請求項1記載の製造方法。   The method according to claim 1, wherein the layer thickness of the stronger adhesive layer of the first adhesive layer and the second adhesive layer is 2 to 30 times the layer thickness of the other layer. 基材テープとして、光硬化性粘着剤組成物を含浸し得る材料を使用する請求項1又は2記載の製造方法。   The manufacturing method of Claim 1 or 2 which uses the material which can impregnate a photocurable adhesive composition as a base tape. 基材テープである光硬化性粘着剤組成物を含浸し得る材料として、不織布を使用する請求項3記載の製造方法。   The manufacturing method of Claim 3 which uses a nonwoven fabric as a material which can be impregnated with the photocurable adhesive composition which is a base tape. 不織布が、繊度0.1〜10dTのポリオレフィン系繊維を用いた、坪量17〜35g/mのメルトブロー又はスパンボンド不織布である請求項4記載の製造方法。 The manufacturing method according to claim 4, wherein the nonwoven fabric is a melt blown or spunbond nonwoven fabric having a basis weight of 17 to 35 g / m 2 using polyolefin fibers having a fineness of 0.1 to 10 dT. 基材テープに光硬化性粘着剤組成物を含浸させた後に、工程(E)におけるカバーフィルムの積層が行われる請求項3〜5のいずれかに記載の製造方法。   The manufacturing method according to any one of claims 3 to 5, wherein the cover film is laminated in the step (E) after the base tape is impregnated with the photocurable pressure-sensitive adhesive composition. 光硬化性粘着剤組成物として、次の成分(A)〜(D)
(A)アクリレート系モノマー
(B)成分(A)と共重合可能なモノマー
(C)光重合開始剤
(D)光架橋剤
を含有する組成物を使用する請求項1〜6のいずれかに記載の製造方法。
As a photocurable adhesive composition, the following components (A) to (D)
The composition containing (A) acrylate monomer (B) monomer copolymerizable with component (A), (C) photopolymerization initiator, and (D) photocrosslinking agent. Manufacturing method.
JP2012083392A 2012-03-31 2012-03-31 Method for producing double-sided adhesive tape Active JP5884608B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014133811A (en) * 2013-01-10 2014-07-24 Kyocera Chemical Corp Double-sided adhesive sheet
JP6327576B1 (en) * 2017-02-01 2018-05-23 下村 恭一 Double-sided tape
WO2018117264A1 (en) * 2016-12-22 2018-06-28 日本合成化学工業株式会社 Double-sided adhesive tape
WO2018117262A1 (en) * 2016-12-22 2018-06-28 日本合成化学工業株式会社 Double-sided adhesive tape

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JP2011038045A (en) * 2009-08-18 2011-02-24 Nitto Denko Corp Self-adhesive tape for fixing honeycomb core upon cutting processing

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JP2004009422A (en) * 2002-06-05 2004-01-15 Nitto Denko Corp Process and apparatus for manufacturing photo-reaction product sheet
JP2011038045A (en) * 2009-08-18 2011-02-24 Nitto Denko Corp Self-adhesive tape for fixing honeycomb core upon cutting processing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014133811A (en) * 2013-01-10 2014-07-24 Kyocera Chemical Corp Double-sided adhesive sheet
WO2018117264A1 (en) * 2016-12-22 2018-06-28 日本合成化学工業株式会社 Double-sided adhesive tape
WO2018117262A1 (en) * 2016-12-22 2018-06-28 日本合成化学工業株式会社 Double-sided adhesive tape
US20190300758A1 (en) * 2016-12-22 2019-10-03 Mitsubishi Chemical Corporation Double-sided pressure-sensitive adhesive tape
JPWO2018117262A1 (en) * 2016-12-22 2019-10-31 三菱ケミカル株式会社 Double-sided adhesive tape
EP3561012A4 (en) * 2016-12-22 2019-12-25 Mitsubishi Chemical Corporation Double-sided adhesive tape
JPWO2018117264A1 (en) * 2016-12-22 2019-12-26 三菱ケミカル株式会社 Double-sided adhesive tape
JP7155522B2 (en) 2016-12-22 2022-10-19 三菱ケミカル株式会社 double sided adhesive tape
JP7155523B2 (en) 2016-12-22 2022-10-19 三菱ケミカル株式会社 double sided adhesive tape
JP6327576B1 (en) * 2017-02-01 2018-05-23 下村 恭一 Double-sided tape
JP2018123246A (en) * 2017-02-01 2018-08-09 下村 恭一 Double-sided tape

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