JPH02145672A - Production of tacky adhesive tape - Google Patents

Production of tacky adhesive tape

Info

Publication number
JPH02145672A
JPH02145672A JP29906888A JP29906888A JPH02145672A JP H02145672 A JPH02145672 A JP H02145672A JP 29906888 A JP29906888 A JP 29906888A JP 29906888 A JP29906888 A JP 29906888A JP H02145672 A JPH02145672 A JP H02145672A
Authority
JP
Japan
Prior art keywords
pressure
sensitive adhesive
tacky adhesive
infrared rays
base material
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
Application number
JP29906888A
Other languages
Japanese (ja)
Inventor
Kenji Hosoyama
細山 健司
Hideaki Suzuki
英明 鈴木
Shiyuuichirou Takeda
武田 収一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanzaki Paper Manufacturing Co Ltd
Original Assignee
Kanzaki Paper Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kanzaki Paper Manufacturing Co Ltd filed Critical Kanzaki Paper Manufacturing Co Ltd
Priority to JP29906888A priority Critical patent/JPH02145672A/en
Publication of JPH02145672A publication Critical patent/JPH02145672A/en
Pending legal-status Critical Current

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  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

PURPOSE:To stably produce a blister-free tacky adhesive tape at a high speed by coating a tacky adhesive to a surface of a surface substrate or a releasing substrate and irradiating the adhesive with near infrared radiation. CONSTITUTION:In the production of a tacky adhesive sheet by laminating a surface substrate, a tacky adhesive layer and a releasing substrate, at least one surface of the surface substrate or the releasing substrate is coated with a tacky adhesive (preferably an emulsion-type acrylic tacky adhesive) and the adhesive is irradiated with near infrared radiation having a wavelength of 0.75-2.5mum.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は粘着シートの製造方法に関し、特にブリスター
のない粘着シートを、高速で安定して製造できる方法に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for producing a pressure-sensitive adhesive sheet, and particularly to a method for producing a pressure-sensitive adhesive sheet without blisters at high speed and stably.

(従来の技術) 粘着シートは商業用、事務用、家庭用等、広範囲の用途
にラベル、シート、ワッペン等として使用されている。
(Prior Art) Adhesive sheets are used as labels, sheets, patches, etc. for a wide range of purposes, including commercial, office, and household uses.

このような粘着シートの一般的構成は表面基材と剥離基
材との間に粘着剤をサンドインチにした状態のものであ
る。
The general structure of such a pressure-sensitive adhesive sheet is such that a pressure-sensitive adhesive is sandwiched between a surface base material and a release base material.

表面基材としては紙、フィルム、フォイル等が用いられ
、剥離基材にはグラシン紙のような高密度原紙、クレー
コート紙やクラフト紙、上質紙にポリエチレン等をラミ
ネートしたポリラミ原紙等にシリコーン化合物や弗素化
合物の如き剥離剤を塗布加工したものが使用される。そ
して粘着剤としてはゴム系、アクリル系、ビニルエーテ
ル系等のエマルジョンや溶剤乃至無溶剤型の各種粘着剤
が使用される。
Paper, film, foil, etc. are used as the surface base material, and release base materials include high-density base paper such as glassine paper, clay coat paper, kraft paper, polylaminate base paper made of high-quality paper laminated with polyethylene, etc., and silicone compounds. A material coated with a release agent such as a fluorine compound or a fluorine compound is used. As the adhesive, various types of adhesives such as rubber-based, acrylic-based, vinyl ether-based emulsions, and solvent or solvent-free adhesives are used.

かかる粘着シートは、一般に剥離基材に粘着剤を塗布、
乾燥した後、表面基材を貼り合わせる方法で製造される
が、例えば、アクリル系共重合体樹脂をトルエン、酢酸
エチル等の溶剤に溶かしたもの、或いはエマルジョンに
したものに必要に応じて各種助剤を配合し、これを剥離
基材に塗布、乾燥して粘着剤層を形成し、これに表面基
材をラミネートして粘着剤を表面基材に転写する方法で
製造される。
Such adhesive sheets are generally made by applying an adhesive to a release base material,
After drying, it is manufactured by bonding the surface base material together. For example, an acrylic copolymer resin is dissolved in a solvent such as toluene or ethyl acetate, or an emulsion is prepared, and various auxiliaries are added as necessary. It is manufactured by a method in which a pressure-sensitive adhesive layer is formed by blending an agent, coating it on a release base material, drying it, and then laminating a surface base material thereon to transfer the pressure-sensitive adhesive onto the surface base material.

また、粘着シートに使用される粘着剤はゴム系からアク
リル系へ、更には溶剤型から水性エマルジョン型への転
換が進み、特にラベル用粘着シー、トは、殆どエマルジ
ョン型アクリル系粘着剤で占めるに至っている。
In addition, the adhesives used in adhesive sheets are changing from rubber-based to acrylic-based, and from solvent-based to water-based emulsion-based. In particular, adhesive sheets for labels, in particular, are mostly made up of emulsion-type acrylic adhesives. It has reached this point.

剥離基材に塗布された粘着剤は、例えばカウンターフロ
ー、インピンジメント、エアースルーエアーフローティ
ング、赤外線、マイクロウェーブ等の各種型式のドライ
ヤーで乾燥される。
The adhesive applied to the release substrate is dried using various types of dryers, such as counterflow, impingement, air-through-air floating, infrared, and microwave dryers.

(発明が解決しようとする課題) ところで、このような粘着シートの製造方法において、
製造速度を高めることは操業の効率化という点で極めて
望ましいために、乾燥工程のドライヤー温度を上げる試
みがしばしば行われる。
(Problems to be Solved by the Invention) By the way, in the method for manufacturing such a pressure-sensitive adhesive sheet,
Since increasing production speed is highly desirable from the standpoint of operational efficiency, attempts are often made to increase the dryer temperature during the drying process.

しかし、ドライヤー温度を上げると急激な水分の蒸発の
ために、紙切れや粘着剤層にブリスターが発生し易く、
しかもブリスターの発生した粘着シートを印刷すると印
刷むらになってしまうため、実際には低速での操業を余
儀なくされているのが実情である。
However, when the temperature of the dryer is raised, the moisture evaporates rapidly, which tends to cause blisters to form on paper and the adhesive layer.
Moreover, printing on an adhesive sheet with blisters results in uneven printing, so in reality, the process is forced to operate at low speeds.

(課題を解決するための手段) かかる現状に鑑み、本発明者らは粘着シートの乾燥工程
について鋭意研究の結果、蒸気加熱、ガスヒーター、熱
風加熱等による従来の乾燥方法では、粘着剤層の表面部
分の乾燥が先行し、粘着剤層全体にわたって均一な乾燥
(特にZ軸方向の乾燥)が行われず、結果的にブリスタ
ーが発生することを突きとめた。
(Means for Solving the Problems) In view of the current situation, the present inventors conducted extensive research on the drying process of adhesive sheets, and found that conventional drying methods using steam heating, gas heaters, hot air heating, etc. It was found that the surface portion dried first, and uniform drying (especially drying in the Z-axis direction) was not performed over the entire adhesive layer, resulting in the occurrence of blisters.

かかる知見に基づき、さらに鋭意研究を重ねた結果、粘
着剤層の乾燥のための手段として、近赤外線を使用する
と粘着剤層の乾燥が全体的に均一となり、しかもブリス
ターの発生もない粘着剤層が効率よく得られることを見
出し、本発明を完成するに至った。
Based on this knowledge, we conducted further intensive research and found that using near-infrared rays as a means of drying the adhesive layer allows the adhesive layer to dry uniformly over the entire area, and also does not cause blisters. The present inventors have discovered that this can be efficiently obtained, and have completed the present invention.

本発明は、表面基材、粘着剤層、剥離基材を積層してな
る粘着シートの製造方法において、表面基材または剥離
基材の少なくとも片面に粘着剤を塗布した後、波長が0
.75〜2.5ξmである近赤外線を照射することを特
徴とする粘着シートの製造方法である。
The present invention provides a method for producing a pressure-sensitive adhesive sheet formed by laminating a surface base material, an adhesive layer, and a release base material.
.. This is a method for producing a pressure-sensitive adhesive sheet, characterized by irradiating near-infrared rays of 75 to 2.5ξm.

(作用) 本発明の方法において、粘着剤としては、例えばゴム系
、アクリル系、ポリエーテル系、エチレン−酢酸ビニル
系のエマルジョン型や溶剤型の各種粘着剤が使用できる
が、本発明の方法で得られる優れた作用効果は、特にエ
マルジョン型のアクリル系粘着剤を使用した場合に顕著
である。なお、粘着剤は乾燥重量で5〜50 g/rr
r程度の範囲で塗布、乾燥され粘着剤層が形成される。
(Function) In the method of the present invention, various types of adhesives such as rubber-based, acrylic-based, polyether-based, ethylene-vinyl acetate-based emulsion type and solvent-type adhesives can be used. The excellent effects obtained are particularly noticeable when an emulsion type acrylic pressure-sensitive adhesive is used. In addition, the dry weight of the adhesive is 5 to 50 g/rr.
The adhesive layer is formed by coating and drying in a range of approximately r.

剥離基材としては、グラシン紙のような高密度原紙、ク
レーコート紙またはクラフト紙、上質紙にポリエチレン
等をラミネートしたポリラミ紙等に、エマルジョン型や
溶剤型または無溶剤型のシリコーンを乾燥重量で0.0
5〜3g/nr程度の範囲で塗布し、熱硬化、電離放射
線硬化等によって剥離剤層を形成したものが使用される
As a release base material, emulsion-type, solvent-type, or solvent-free silicone can be applied to high-density base paper such as glassine paper, clay coated paper or kraft paper, polylaminated paper made by laminating polyethylene, etc. to high-quality paper, etc. by dry weight. 0.0
A release agent layer is used which is coated in a range of about 5 to 3 g/nr and is cured by heat curing, ionizing radiation, or the like.

而して、本発明の方法では前述の如く、粘着剤層の乾燥
手段として近赤外線を使用するところに極めて重大な特
徴を存するものである。
As mentioned above, the method of the present invention has an extremely important feature in that near-infrared rays are used as a means for drying the adhesive layer.

従来から、粘着剤層を乾燥する方法としては、蒸気加熱
、熱風加熱、ガスヒーター、電気ヒータ、赤外線ヒータ
ー、高周波、レーザー、電子線等の各種加熱方式が使用
されており、赤外線乾燥もよく知られている。
Conventionally, various heating methods such as steam heating, hot air heating, gas heater, electric heater, infrared heater, high frequency, laser, and electron beam have been used to dry the adhesive layer, and infrared drying is also well known. It is being

なお、赤外線は一般に波長が0.75〜2.5μmの近
赤外線、2.5〜25μmの中間赤外線、25〜200
0μmの遠赤外線に大別される(機器分析のてびき一化
学同人/1979年4月20日発行参照)が、従来から
使用されている赤外線乾燥機では、波長が2.5μm以
上の中間赤外領域や遠赤外領域の赤外線が専ら使用され
ており、本発明で使用するような近赤外領域の赤外線乾
燥は比較的新しい乾燥方式である。
In addition, infrared rays generally include near infrared rays with wavelengths of 0.75 to 2.5 μm, mid-infrared rays of 2.5 to 25 μm, and wavelengths of 25 to 200 μm.
It is broadly classified into far infrared rays with a wavelength of 0 μm (see Instrumental Analysis Tebiki Kagaku Dojin / published on April 20, 1979), but conventionally used infrared dryers are capable of producing far infrared rays with a wavelength of 2.5 μm or more. Infrared rays in the outer and far infrared regions are exclusively used, and infrared drying in the near infrared region as used in the present invention is a relatively new drying method.

本発明の方法では、この近赤外領域の赤外線を利用する
ものであり、波長が0.75〜2.5μm、より好まし
くは1.0〜2.0μmである近赤外線を使用するもの
である。
The method of the present invention utilizes infrared rays in this near-infrared region, and uses near-infrared rays with a wavelength of 0.75 to 2.5 μm, more preferably 1.0 to 2.0 μm. .

波長が0.75μmより短くなると、粘着剤層の乾燥の
ための水分の蒸発に対する効果が極端に少なくなり、そ
の目的を達成することが出来ず、また波長が2.5μm
より長(なると、単なる水分の蒸発、乾燥には有効であ
るが、本発明の所望の効果を得ることは出来ない。
If the wavelength is shorter than 0.75 μm, the effect on moisture evaporation for drying the adhesive layer will be extremely reduced, and the purpose cannot be achieved.
If the duration is longer, it is effective for mere evaporation of moisture and drying, but the desired effects of the present invention cannot be obtained.

近赤外線による乾燥によって、粘着剤層がブリスターを
発生することな(均一に乾燥される理由は明らかではな
いが、恐らく近赤外線は粘着剤層に対する透過力が強く
、且つエネルギー密度が高いために、高速での粘着シー
トの製造においても粘着剤層が瞬時に、しかも均一に乾
燥されるためではないかと推測される。
By drying with near-infrared rays, the adhesive layer does not generate blisters (the reason why it dries uniformly is not clear, but it is probably because near-infrared rays have a strong penetrating power through the adhesive layer and a high energy density). It is speculated that this is because the adhesive layer dries instantly and uniformly even in the production of adhesive sheets at high speeds.

(実施例) 以下に実施例を挙げて本発明をより具体的に説明するが
、勿論これらに限定されるものではない。
(Example) The present invention will be described in more detail with reference to Examples below, but it is of course not limited to these.

実施例1 ポリエチレンラミネート原紙にシリコーン化合物を塗布
硬化してなる剥離基材の表面に、エマルジョン型アクリ
ル系粘着剤〔東洋インキー;オリバインB P W−3
1)0)をロールコータ−で乾燥重量が25 g / 
gとなるように塗布し、赤外線照射装置を用い波長カ月
、0μmの近赤外線を1秒間照射し、引き続きエアーフ
ローティングドライヤーで140℃で10秒間乾燥して
粘着シートを得た。
Example 1 An emulsion-type acrylic adhesive [Toyo Ink; Olivine B P W-3] was applied to the surface of a release base material made by coating and curing a silicone compound on a polyethylene laminate base paper.
1) Coating 0) with a roll coater to a dry weight of 25 g/
g, and was irradiated with near-infrared rays with a wavelength of 0 μm for 1 second using an infrared irradiation device, followed by drying with an air floating dryer at 140° C. for 10 seconds to obtain a pressure-sensitive adhesive sheet.

実施例2 実施例1において赤外線照射装置の赤外線の波長を1.
5μmとした以外は、実施例1と同様にして粘着シート
を得た。
Example 2 In Example 1, the wavelength of the infrared rays of the infrared irradiation device was set to 1.
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the thickness was 5 μm.

実施例3 実施例1において赤外線照射装置の赤外線の波長を2.
0μmとした以外は、実施例1と同様にして粘着シート
を得た。
Example 3 In Example 1, the wavelength of the infrared rays of the infrared irradiation device was set to 2.
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the thickness was 0 μm.

比較例1 前記実施例1と同様の手順により粘着剤組成物を乾燥重
量が25 g / gとなるように塗布し、エアーフロ
ーティングドライヤーで、140℃で90秒間乾燥して
粘着シートを得た。
Comparative Example 1 A pressure-sensitive adhesive composition was applied in the same manner as in Example 1 so that the dry weight was 25 g/g, and dried at 140° C. for 90 seconds using an air floating dryer to obtain a pressure-sensitive adhesive sheet.

比較例2 実施例1において赤外線照射装置の赤外線の波長を0.
7μmとした以外は、実施例1と同様にして粘着シート
を得た。
Comparative Example 2 In Example 1, the wavelength of the infrared rays of the infrared irradiation device was set to 0.
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the thickness was 7 μm.

比較例3 実施例1において赤外線照射装置の赤外線の波長を3.
0μmとした以外は、実施例1と同様にして粘着シート
を得た。
Comparative Example 3 In Example 1, the wavelength of the infrared rays of the infrared irradiation device was set to 3.
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the thickness was 0 μm.

比較例4 実施例1において赤外線照射装置の赤外線の波長を5.
7μmとした以外は、実施例1と同様にして粘着シート
を得た。
Comparative Example 4 In Example 1, the wavelength of the infrared rays of the infrared irradiation device was set to 5.
A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the thickness was 7 μm.

なお、実施例1〜3及び比較例2.3に用いた赤外線照
射装置の光源はフィラメント、集光板、対向反射板より
構成され、フィラメントにはタングステンを使用し、こ
れを1600〜3800”Kに電気加熱することによっ
て近赤外線を得た。
The light source of the infrared irradiation device used in Examples 1 to 3 and Comparative Example 2.3 is composed of a filament, a light condensing plate, and an opposing reflector. Tungsten is used for the filament, and it is heated to 1600 to 3800"K. Near-infrared radiation was obtained by electrical heating.

これを金コーティングしたステンレス集光板(フィラメ
ント上部に配置)により集光し、粘着剤を塗布した剥離
紙に照射した。また、紙を通過した近赤外線は紙の裏側
に配置されたアルミニウム板で反射され、紙に再照射さ
れることでよりいっそうの乾燥の均一化が行われる。
This light was collected by a gold-coated stainless steel light collecting plate (placed above the filament) and irradiated onto a release paper coated with an adhesive. In addition, the near-infrared rays that have passed through the paper are reflected by an aluminum plate placed on the back side of the paper, and the paper is re-irradiated, resulting in even more uniform drying.

比較例4の赤外線照射装置の赤外線は都市ガスで放射体
を加熱することによって得た。即ち、特殊ガラスチュー
ブの表面に放射体として酸化ジルコニウム化合物が塗布
されており、このチューブを内側より都市ガスのバーナ
ーで加熱して、遠赤外線を発生させ紙に放射した。
The infrared rays of the infrared irradiation device of Comparative Example 4 were obtained by heating the radiator with city gas. That is, a zirconium oxide compound was coated as a radiator on the surface of a special glass tube, and the tube was heated from the inside with a city gas burner to generate far-infrared rays, which were radiated onto the paper.

かくして得られた粘着シートの粘着剤層表面のブリスタ
ーの発生状況を目視評価した後、その面に紙厚70μm
、坪量66 g/n?の上質紙を貼合わせ、上質紙に印
刷して印刷むらの発生状況を目視評価し、その結果を表
に示した。
After visually evaluating the occurrence of blisters on the surface of the adhesive layer of the adhesive sheet obtained in this way, a sheet of paper with a thickness of 70 μm was applied to the surface.
, basis weight 66 g/n? The results are shown in the table.The results are shown in the table.

表 (作用) 表の結果から明らかなように、本発明の方法で得られた
粘着シートは、近赤外線照射による乾燥で極めて効果的
にブリスターの発生が抑えられており、しかも優れた粘
着シート品質を有していt(。
Table (Effect) As is clear from the results in the table, the adhesive sheet obtained by the method of the present invention is extremely effective in suppressing blistering when dried by near-infrared irradiation, and has excellent adhesive sheet quality. has t(.

Claims (2)

【特許請求の範囲】[Claims] (1)表面基材、粘着剤層、剥離基材を積層してなる粘
着シートの製造方法において、表面基材または剥離基材
の少なくとも片面に粘着剤を塗布した後、波長が0.7
5〜2.5μmである近赤外線を照射することを特徴と
する粘着シートの製造方法。
(1) In a method for manufacturing a pressure-sensitive adhesive sheet formed by laminating a surface base material, an adhesive layer, and a release base material, after applying an adhesive to at least one side of the surface base material or release base material, a wavelength of 0.7
A method for producing a pressure-sensitive adhesive sheet, characterized by irradiating near-infrared rays with a wavelength of 5 to 2.5 μm.
(2)粘着剤がエマルジョン型のアクリル系粘着剤であ
る請求項(1)記載の粘着シートの製造方法。
(2) The method for producing a pressure-sensitive adhesive sheet according to claim (1), wherein the pressure-sensitive adhesive is an emulsion type acrylic pressure-sensitive adhesive.
JP29906888A 1988-11-26 1988-11-26 Production of tacky adhesive tape Pending JPH02145672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29906888A JPH02145672A (en) 1988-11-26 1988-11-26 Production of tacky adhesive tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29906888A JPH02145672A (en) 1988-11-26 1988-11-26 Production of tacky adhesive tape

Publications (1)

Publication Number Publication Date
JPH02145672A true JPH02145672A (en) 1990-06-05

Family

ID=17867785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29906888A Pending JPH02145672A (en) 1988-11-26 1988-11-26 Production of tacky adhesive tape

Country Status (1)

Country Link
JP (1) JPH02145672A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014083938A1 (en) * 2012-11-28 2014-06-05 コニカミノルタ株式会社 Method for producing transparent electrode and organic el element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014083938A1 (en) * 2012-11-28 2014-06-05 コニカミノルタ株式会社 Method for producing transparent electrode and organic el element
JPWO2014083938A1 (en) * 2012-11-28 2017-01-05 コニカミノルタ株式会社 Method for producing transparent electrode and organic EL device
US9640762B2 (en) 2012-11-28 2017-05-02 Konica Minolta, Inc. Method for producing transparent electrode and organic EL element

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