JPS5956471A - Preparation of double-faced adhesive tape - Google Patents
Preparation of double-faced adhesive tapeInfo
- Publication number
- JPS5956471A JPS5956471A JP57166896A JP16689682A JPS5956471A JP S5956471 A JPS5956471 A JP S5956471A JP 57166896 A JP57166896 A JP 57166896A JP 16689682 A JP16689682 A JP 16689682A JP S5956471 A JPS5956471 A JP S5956471A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- adhesive tape
- double
- adhesive sheet
- parts
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】
この発明は表裏面の接着特性が異なりしかも基材を含ま
ない両面接着テープの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a double-sided adhesive tape in which the front and back surfaces have different adhesive properties and do not contain a base material.
両面接着テープとして、その用途上から表裏両側の被着
体の表面状態が大きく異なる場合や片側の被着体を剥離
し易くする場合などでは、両側で接着特性の異なるもの
が必要である。たとえばナプキン用両面接着テープでは
、片面にナプキンを被着させ他面には綿布を被着させる
ので、ナプキン側は粗面接着性が良好となるように比較
的に柔らかな特性が望ましく、逆に綿布側は剥離容易で
糊残りを生じないように比較的に硬い特性が望まれる。A double-sided adhesive tape that has different adhesion properties on both sides is required in cases where the surface conditions of the adherends on both the front and back sides are significantly different, or where one side of the adherend is to be easily peeled off. For example, with double-sided adhesive tape for napkins, the napkin is attached to one side and the cotton cloth is attached to the other side, so it is desirable that the napkin side has relatively soft characteristics so that it has good adhesion to rough surfaces. The cotton fabric side is desired to be relatively hard so that it can be easily peeled off and no adhesive residue is left.
同様に発泡体からなるクッション材料、フェルト、ある
いはカーペットなどの粗面材料と平坦面材料とを接着す
るのに使用される両面接着テープにあっても表裏面で異
なる接着特性が必要である。Similarly, double-sided adhesive tapes used to bond rough and flat materials, such as foam cushioning materials, felt, or carpets, require different adhesion properties on the front and back surfaces.
このように表裏で異なる接着特性を有する両面接着テー
プは、一般的には基材を挾む両側の粘着剤組成を異なら
せたり基材両側の糊厚に差をもたせたりすることによっ
て製造可能である。しかしながら、省資源あるいは省エ
ネルギーの観点から非常に理想的である基材レステープ
、すなわち不織布やレーヨン紙などの基材を用いずに粘
着剤単独で構成される両面接着テープにおいては、既知
手段では表裏の接着特性に差を有してしかもテープとし
ての必要条件を満足できるものは得られない。たとえば
特性の異なる２枚の粘着剤シートを貼り合わせる方法や
予め作製した粘着剤シート上に異なる特性の粘着剤を塗
着する方法では、工数がかかる上に糊厚の薄いものが得
にくく、また製造された両面接着テープは層間破壊を生
じ易いものとなる。Double-sided adhesive tapes that have different adhesion properties on the front and back sides can generally be manufactured by using different adhesive compositions on both sides that sandwich the base material, or by varying the thickness of the adhesive on both sides of the base material. be. However, in the case of base material-less tapes, which are very ideal from the viewpoint of resource or energy conservation, that is, double-sided adhesive tapes that are composed of only an adhesive without using a base material such as non-woven fabric or rayon paper, the known means can However, it is not possible to obtain a tape that has different adhesive properties and still satisfies the requirements for a tape. For example, the method of laminating two adhesive sheets with different properties or the method of applying adhesives with different properties on a pre-fabricated adhesive sheet requires a lot of man-hours and is difficult to obtain a thin adhesive. The manufactured double-sided adhesive tape is susceptible to interlayer failure.
この発明者らは、上述の状況に鑑みて鋭意検討をした結
果、一体の粘着剤シートの表裏におけるポリマー架橋度
に差を与えることにより基材レス両面接着テープにおい
て表裏の接着特性を異ならせることが可能となり、しか
も表裏の特性差を任意に調整できることを究明し、この
発明をなすに至った。すなわち、この発明は、アクリル
系モノマーの重合物を主材とした接着剤シートを作製し
、この粘着剤シートの片面に光架橋増感剤を含む液剤を
均一に被着して光照射処理を施すことを特徴とする両面
接着テープの製造方法に係る。As a result of intensive studies in view of the above-mentioned situation, the inventors have discovered that by giving a difference in the degree of polymer crosslinking on the front and back sides of a single adhesive sheet, the adhesive properties of the front and back sides of a base material-less double-sided adhesive tape can be made different. The present inventors have discovered that this becomes possible, and that the difference in characteristics between the front and back sides can be adjusted arbitrarily, leading to the creation of this invention. That is, this invention involves producing an adhesive sheet mainly made of a polymer of acrylic monomers, uniformly coating one side of this adhesive sheet with a liquid agent containing a photocrosslinking sensitizer, and subjecting it to light irradiation treatment. The present invention relates to a method for producing a double-sided adhesive tape, characterized in that:
この発明方法によれば、表裏面で異なる接着特性を有す
る両面接着テープが簡単な製造設備と小さな使用スペー
スのもとに少ない工数で労力を要さずに容易に製造でき
、きわめて経済的である。According to the method of this invention, a double-sided adhesive tape having different adhesion properties on the front and back sides can be easily manufactured using simple manufacturing equipment and a small space, with a small number of man-hours and no labor, and is extremely economical. .
加えて、得られる両面接着テープは、基材を使用してい
ないいわゆる基材レステープであるため、非常に安価で
あり、また糊厚を薄くして粘着剤使用量を減じることが
可能であり、しかも表裏面の特性差が用途目的に応じた
適正値に設定されているという極めて画期的な特徴を備
えている。In addition, the obtained double-sided adhesive tape is a so-called base material-less tape that does not use a base material, so it is very inexpensive, and it is possible to reduce the amount of adhesive used by reducing the thickness of the adhesive. Moreover, it has an extremely innovative feature in that the difference in characteristics between the front and back surfaces is set to an appropriate value depending on the purpose of use.
この発明において上記粘着剤シートの作製に使用される
アクリル系重合物は、感圧性接着剤ポリマーを生成し得
る１種ないし２種以」二のアクリル系モノマーを溶液重
合、エマルジョン重合、塊状重合などの種々の重合法に
より重合させて得られる。これに使用される主モノマー
としては、アクリル酸エチル、アクリル酸ブチル、アク
リル酸２−エチルヘキシル、アクリル酸インオクチルの
如きアクリル酸エステル、あるいはメタクリル酸エチル
、メタクリル酸ブチルの如きメタクリル酸エステルなど
がある。また主モノマーと併用できる官能性モノマーと
しては、アクリル酸、メタクリル酸、イタコン酸、アク
リル酸２−ヒドロキシエチルエステル、アクリル酸ジメ
チルアミノエチルエステル、アクリル酸アミドなどがあ
る。更に重合に使用される重合開始剤としては、ベンゾ
イルパーオキサイド、クメンハイドロパーオキサイドの
如きバーオキ日ノ−イド化合物、アゾビスイソブチロニ
トリルの如きアゾ化合物、アンモニウムバーサルフエイ
ド、カリウムパーサルフエイドの如きバーサルフエイド
化合物などがある。In the present invention, the acrylic polymer used for producing the above-mentioned pressure-sensitive adhesive sheet is obtained by polymerizing one or more acrylic monomers capable of producing a pressure-sensitive adhesive polymer by solution polymerization, emulsion polymerization, bulk polymerization, etc. It can be obtained by polymerization using various polymerization methods. Main monomers used for this include acrylic esters such as ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, and inoctyl acrylate, and methacrylic esters such as ethyl methacrylate and butyl methacrylate. . Functional monomers that can be used in combination with the main monomer include acrylic acid, methacrylic acid, itaconic acid, 2-hydroxyethyl acrylate, dimethylaminoethyl acrylate, and acrylamide. Furthermore, the polymerization initiators used in the polymerization include peroxynoid compounds such as benzoyl peroxide and cumene hydroperoxide, azo compounds such as azobisisobutyronitrile, ammonium versalphide, and potassium persulfide. There are various compounds such as versalphide.
重合によって得られたアクリル系ポリマーにより粘着剤
シートを作成するには、リバースコータ、ダムコータ、
ファンテンコータ、キスコータおよび押出方式のコータ
などの目的形状に応じた塗布器により、２０〜２００μ
ｍ１ 好ましくは３０〜１００μｍの厚み範囲の所要糊
厚として成膜塗工する。糊厚が２０μｍより薄い場合は
表裏面の特性差が出にくく、また２００μｍより厚くな
ると後述する光照射処理において光透過が不充分となっ
て満足なテープ特性が得られない。To create adhesive sheets from acrylic polymers obtained through polymerization, reverse coaters, dam coaters,
20 to 200 μ
m1 Preferably, a film is formed and coated with the required glue thickness in the thickness range of 30 to 100 μm. When the adhesive thickness is less than 20 μm, it is difficult to differentiate the characteristics between the front and back surfaces, and when it is thicker than 200 μm, light transmission becomes insufficient in the light irradiation treatment described below, making it impossible to obtain satisfactory tape characteristics.
この発明では、上述の粘着剤シートの片面に光架橋増感
剤を含む液剤を被着させる。この光架橋増感剤とは活性
光線の照射により高分子中の活性水素を引抜く作用を有
するもので、たとえばベンゾフェノン、４−ヒドロキシ
ベンゾフェノン、２−クロルアントラキノン、２−メチ
ルアントラキノン、ベンゾイン、アセトフェノン、アン
スロン、１・４−ナフトキノン、９・１０−アントラキ
ノン、１・２−ベンゾアントラキノンの如き芳香族ケト
ン、芳香族アルデヒド、芳香族カルボン酸、さらには光
増感性のハロゲン原子を含有する有機化合物などがある
。このような光架橋増感剤は粘着剤シートのポリマー１
００重量部に対して０．０１〜５重量部、好ましくは０
．２〜２重量部の割合で使用し、これを含む液剤の形態
で粘着剤シートの片面に被着させる。この使用量が少な
すぎると効果が不十分となり、逆に多くなりすぎると架
橋密度が必要以上に高くなって高度の三次元化にて粘着
剤シートの柔軟性が損なわれる。In this invention, a liquid agent containing a photocrosslinking sensitizer is applied to one side of the above-mentioned pressure-sensitive adhesive sheet. These photocrosslinking sensitizers have the ability to extract active hydrogen from polymers by irradiation with actinic rays, such as benzophenone, 4-hydroxybenzophenone, 2-chloroanthraquinone, 2-methylanthraquinone, benzoin, acetophenone, Aromatic ketones such as anthrone, 1,4-naphthoquinone, 9,10-anthraquinone, and 1,2-benzaanthraquinone, aromatic aldehydes, aromatic carboxylic acids, and organic compounds containing photosensitizing halogen atoms. be. Such a photocrosslinking sensitizer is used as polymer 1 of the adhesive sheet.
0.01 to 5 parts by weight, preferably 0.00 parts by weight
．． It is used in a proportion of 2 to 2 parts by weight, and is applied to one side of an adhesive sheet in the form of a liquid containing it. If the amount used is too small, the effect will be insufficient, and if it is too large, the crosslinking density will become higher than necessary, and the flexibility of the adhesive sheet will be impaired due to the highly three-dimensional structure.
上記光架橋増感剤を配合して液剤化するための溶媒とし
てはトルエン、テトラハイドロフラン、メチルエチルケ
トン、アセトン、メタノール、エタノールなどの光架橋
増感剤を溶解し得る有機溶剤が望ましく、粘着剤シート
に被着させる際にある程度の粘性が必要である場合は液
中にアクリル系ポリマーを適当量配合してもよい。また
場合によってはエマルジョン形態として使用することも
可能である。The solvent for blending the photocrosslinking sensitizer to form a liquid is preferably an organic solvent that can dissolve the photocrosslinking sensitizer, such as toluene, tetrahydrofuran, methyl ethyl ketone, acetone, methanol, or ethanol. If a certain degree of viscosity is required when adhering to the liquid, an appropriate amount of an acrylic polymer may be added to the liquid. In some cases, it can also be used in the form of an emulsion.
なお、この発明では」−配光架橋増感剤とともに光活性
架橋剤を使用してもよい。この光活性架橋剤とは、活性
光線もしくは光架橋増感剤からの励起エネルギーを受け
て活性化し、アクリル系ポリマーを架橋に導くものであ
り、この使用によって光照射時間を短縮することができ
る。光活性架橋剤の例としては、Ｎ、Ｎ−メチレンビス
アクリルアミド、エチレングリコールジメタ／クリレー
ト、ポリエチレングリコールジメタ／クリレート、５−
アクリルアミノ−Ｎ−アクリルカプロアミドなどが挙げ
られる。この使用量は粘着剤シートのアクリル系ポリマ
ー１００重量部に対して０．１〜２０重量部、好適には
０．２〜５重量部である。この種光活性架橋剤は前記の
光架橋増感剤を含む液剤中に配合して用いられる。この
使用量が過少であると効果が充分に発現されず、逆に過
多では架橋密度が不必要に高くなって粘着剤シートの柔
軟性が損なわれる。In addition, in this invention, a photoactive crosslinking agent may be used together with a photodistributive crosslinking sensitizer. This photoactive crosslinking agent is activated by receiving excitation energy from actinic light or a photocrosslinking sensitizer and leads to crosslinking of the acrylic polymer, and its use can shorten the photoirradiation time. Examples of photoactive crosslinkers include N,N-methylenebisacrylamide, ethylene glycol dimeth/acrylate, polyethylene glycol dimeth/acrylate, 5-
Acrylamino-N-acrylic caproamide and the like can be mentioned. The amount used is 0.1 to 20 parts by weight, preferably 0.2 to 5 parts by weight, based on 100 parts by weight of the acrylic polymer of the adhesive sheet. This type of photoactive crosslinking agent is used by being blended into a solution containing the photocrosslinking sensitizer described above. If the amount used is too small, the effect will not be sufficiently expressed, whereas if it is used too much, the crosslinking density will become unnecessarily high and the flexibility of the pressure-sensitive adhesive sheet will be impaired.
また、上述の光架橋増感剤および光活性架橋剤は、粘着
剤シートの表裏面の特性に差をつけるために該シートの
片面に被着させるのとは別に、粘着剤シート全体のテー
プ特性を調整する目的でアクリル系ポリマー中に配合す
ることができる。In addition to coating the above-mentioned photocrosslinking sensitizer and photoactive crosslinking agent on one side of the adhesive sheet in order to differentiate the properties of the front and back sides of the adhesive sheet, the photo-crosslinking sensitizer and the photoactive crosslinking agent are also applied to the tape properties of the entire adhesive sheet. It can be blended into acrylic polymers for the purpose of adjusting.
光架橋増感剤またはこれと光活性架橋剤とを含む液剤を
粘着剤シートの片面に被着させるには、この液剤を既知
手段によって上記シート表面に塗布もしくは吹き付けに
よって塗着させるのが一般的であるが、セパレータ上に
予め液剤を塗着しておいてこの塗着面上に粘着剤を塗工
して粘着剤シートを作製する方法でも可能である。そし
て、上述手段により液剤を被着後の粘着剤シートは、被
着後の３０分以内、好ましくは５分以内の短時間のうち
に光照射処理を施すことが望ましい。その理由は、液剤
の被着後に経時的に光架橋増感剤が粘着剤層中に拡散し
、長時間を経ると被着側面より反対側面まで均一もしく
はほぼ均一に近い光架橋増感剤濃度となり、光照射後の
シートの表裏で所望の特性差が生じなくなることにある
。In order to apply a photo-crosslinking sensitizer or a liquid agent containing this and a photoactive cross-linking agent to one side of an adhesive sheet, this liquid agent is generally applied by coating or spraying onto the surface of the sheet by known means. However, it is also possible to prepare a pressure-sensitive adhesive sheet by applying a liquid agent on the separator in advance and applying the pressure-sensitive adhesive onto the applied surface. The pressure-sensitive adhesive sheet after the liquid agent has been applied by the above-mentioned method is desirably subjected to light irradiation treatment within a short time of 30 minutes, preferably within 5 minutes after the application. The reason for this is that the photocrosslinking sensitizer diffuses into the adhesive layer over time after the liquid is deposited, and over a long period of time, the concentration of the photocrosslinking sensitizer becomes uniform or nearly uniform from the adhered side to the opposite side. Therefore, the desired difference in characteristics does not occur between the front and back sides of the sheet after light irradiation.
光照射処理に使用する活性光源としては、キセノンラン
プ、低圧および高圧水銀ランプ、超高圧水銀ランプ、太
陽光、カーボンアークなどが挙げられ、波長が１．５０
０〜６．０００穴、望ましくは２，０００〜５，０００
Ａのものがよい。１．５０ＯＡより短波長のものではポ
リマーを分解に導き、６．０ＯＯＡより長波長のもので
は光架橋増感剤を励起するのに充分なエネルギーを付与
できない。Active light sources used for light irradiation treatment include xenon lamps, low-pressure and high-pressure mercury lamps, ultra-high-pressure mercury lamps, sunlight, carbon arcs, etc., and those with a wavelength of 1.50
0-6,000 holes, preferably 2,000-5,000
A is good. A wavelength shorter than 1.50 OA leads to decomposition of the polymer, and a wavelength longer than 6.0 OA cannot impart sufficient energy to excite the photocrosslinking sensitizer.
また光照射時間は一般に４００Ｗ高圧水銀ランプで１０
秒から２分間が目安となり、光照射時間が長くなるほど
、また光源の出力が大きいほどアクリル系ポリマーの架
橋密度が増大して粘着剤の凝集力が大きくなる。また光
照射は粘着剤シートの片面側から行なう以外に、透明フ
ィルム製セパレータ上への塗工により粘着剤シートを形
成してその両面側より同時に照射することもできる。In addition, the light irradiation time is generally 10
A standard range is from seconds to two minutes, and the longer the light irradiation time and the greater the output of the light source, the greater the crosslinking density of the acrylic polymer and the greater the cohesive force of the adhesive. In addition to carrying out light irradiation from one side of the pressure-sensitive adhesive sheet, it is also possible to form a pressure-sensitive adhesive sheet by coating on a transparent film separator and irradiate it simultaneously from both sides thereof.
このような光照射処理を経ることにより粘着剤シートの
表裏間で光架橋増感剤濃度の差に基いて架橋度に違いが
生じ、その結果として所望により所定幅に裁断して得ら
れる基材レス両面接着テープの表裏で接着特性に差がで
きる。そして、この特性差はアクリル系ポリマーの種類
、光架橋増感剤および所望により併用する光架橋剤の種
類と使用量、光照射時間を適宜選択することにより任意
に調整できる。またテープの厚みも前記のごとく２０〜
２００μｍという広範囲で選択できる。更に粘着剤ポリ
マー中に予め短繊維物質を混入したり可塑剤を配合する
ことにより、強度や柔軟性などのテープ特性を用途や目
的に応じたものとすることも可能である。Through such light irradiation treatment, a difference in the degree of crosslinking occurs between the front and back sides of the adhesive sheet based on the difference in the concentration of the photocrosslinking sensitizer, and as a result, the base material can be cut into a predetermined width as desired. There is a difference in adhesive properties between the front and back sides of double-sided adhesive tape. This difference in properties can be arbitrarily adjusted by appropriately selecting the type of acrylic polymer, the type and amount of the photocrosslinking sensitizer and the photocrosslinking agent used in combination if desired, and the light irradiation time. Also, the thickness of the tape is 20 ~
It can be selected from a wide range of 200 μm. Furthermore, by mixing short fiber substances or adding a plasticizer into the adhesive polymer in advance, it is possible to adjust the tape properties such as strength and flexibility according to the use and purpose.
次に、この発明の実施例を示す。なお、以下において部
とあるのはいずれも重量部であり、また接着力および保
持力は次の方法にて測定した。Next, examples of this invention will be shown. In addition, in the following, all parts are parts by weight, and the adhesive strength and holding power were measured by the following method.
〈接着力〉
基材レス両面接着テープを２５μｍ厚のポリエステルフ
ィルムで裏打ちした試料を２０諭幅に切断し、ステンレ
ス板表面に２Ｋｇのゴムローラを１往復させて圧着し、
３０分経過後にショッパ型剥離試験機にて３００ｍ／分
の速度で２０℃の温度下における剥離角度１８０ａの剥
離接着力を測定した。<Adhesive strength> A sample of base material-less double-sided adhesive tape lined with a 25 μm thick polyester film was cut into 20 strips, and a 2 kg rubber roller was pressed against the surface of the stainless steel plate by making one reciprocation.
After 30 minutes had elapsed, the peel adhesive strength was measured at a peel angle of 180a at a temperature of 20° C. at a speed of 300 m/min using a Schopper type peel tester.
く保持力〉
基材レス両面接着テープの片面に２５μｍ厚のポリエス
テルフィルムで裏打ちしてなる１０×２０ｍの試料テー
プをベークライト板表面に貼り付け、４０℃の温度下で
３００ｇの荷重をかけて１時間後のずれ距離を測定した
。Holding power〉 A 10 x 20 m sample tape made of a base material-less double-sided adhesive tape lined with a 25 μm thick polyester film on one side was pasted on the surface of a Bakelite plate, and a load of 300 g was applied at a temperature of 40°C. The displacement distance after a certain period of time was measured.
実施例１
アクリル酸ブチル８０部、アクリル酸２−エチルヘキシ
ル１５部、アクリル酸５部、およびトルエン１５０部を
不活性ガスで置換した重合釜中に仕込み、重合開始剤と
してアゾビスイソブチロニトリル０．５部を用いて溶液
重合を行ない、得られた重合物をリバースコータにて剥
離紙上に塗布。Example 1 80 parts of butyl acrylate, 15 parts of 2-ethylhexyl acrylate, 5 parts of acrylic acid, and 150 parts of toluene were charged into a polymerization pot purged with inert gas, and 0 parts of azobisisobutyronitrile was added as a polymerization initiator. Solution polymerization was performed using .5 parts, and the resulting polymer was coated on release paper using a reverse coater.
乾燥して剥離紙で裏打ちされた糊厚３０μｍの粘着剤シ
ートを作製した。この粘着剤シートの表面に、２−メチ
ルアントラキノンの１重量％アセトン溶液を、粘着剤シ
ートのアクリル系ポリマー１００部に対して２−メチル
アントラキノンが０．５部となる割合で塗布し、２０秒
後に４００Ｗ水銀ランプにてシート表面から２０ｍの照
射距離で３０秒間露光した。得られた基材レス両面接着
テープは下記の特性を示した。An adhesive sheet having a thickness of 30 μm was prepared by drying and lined with release paper. A 1% by weight acetone solution of 2-methylanthraquinone was applied to the surface of the adhesive sheet at a ratio of 0.5 part of 2-methylanthraquinone to 100 parts of the acrylic polymer of the adhesive sheet, and the mixture was coated for 20 seconds. Thereafter, the sheet was exposed to light for 30 seconds using a 400W mercury lamp at an irradiation distance of 20 m from the sheet surface. The obtained base material-less double-sided adhesive tape exhibited the following properties.
〈表面〉
接着力 ２００ｇ／２０ｍｍ、保持力０．２ｍｍ／時間
〈裏面〉
接着力 ４００ｇ／２０ｍｍ、保持力０．５ｍ／時間実
施例２
実施例１にて得られた溶液重合物に２−メチルアラトラ
キノンの１重量％トルエン溶液を共重合ポリマー１００
部に対して０．２部添加混合し、これをリバースコータ
にて剥離紙上に塗布、乾燥して剥離紙で裏打ちされた糊
厚３０μｍの粘着剤シートを作製した。この粘着剤シー
トの表面に、２−メチルアントラキノンの１重量％アセ
トン溶液を、粘着剤シートのアクリル系ポリマー１００
部に対して２−メチルアントラキノンが０．３部となる
割合で塗布し、２０秒後に４００Ｗ水銀ランプにてシー
ト表面側から２０ｍの照射距離で３０秒間露光した。得
られた基材レス両面接着テープは下記の特性を示した。<Surface> Adhesive force 200 g/20 mm, holding force 0.2 mm/hour <Back side> Adhesive force 400 g/20 mm, holding force 0.5 m/hour Example 2 2-methyl was added to the solution polymer obtained in Example 1. Copolymer 100 of 1% by weight toluene solution of alatraquinone
This was applied onto a release paper using a reverse coater and dried to produce an adhesive sheet with an adhesive thickness of 30 μm and lined with release paper. A 1% by weight acetone solution of 2-methylanthraquinone was applied to the surface of the adhesive sheet, and the acrylic polymer 100% of the adhesive sheet was
2-methylanthraquinone was applied at a ratio of 0.3 parts per part of the sheet, and after 20 seconds, the sheet was exposed to light using a 400 W mercury lamp at an irradiation distance of 20 m from the sheet surface side for 30 seconds. The obtained base material-less double-sided adhesive tape exhibited the following properties.
〈表面〉
接着力 １８０ｇ／２０鵬 、保持力 ０．２■／時間
〈裏面〉
接着力 ３００ｇ／２Ｏｎ＋ｍ 、保持力 ０．３Ｗ
ｒｒｎ／時間実施例３
アクリル酸ブチル５０部、アクリル酸２−エチルヘキシ
ル４０部、アクリル酸１０部、およびトルエン１００部
を不活性ガスで置換した重合釜中に仕込み、重合開始剤
としてベンゾイルパーオキサイド２部を用いて溶液重合
を行なった。一方、２５μｍ厚のポリエステルフィルム
セパレータ上にスプレーによりベンゾフェノンの２重量
％トルエン溶液を均一に吹き付は塗布し、この塗布面上
に上記溶液重合にて得られた重合物をリバースコータに
て塗布、乾燥し、糊厚６０μｍで裏面側に共重合ポリマ
ー１００部に対してベンゾフェノンが０．５部となる割
合で被着された粘着剤シートを作製し、ただちに４００
Ｗ水銀ランプにてシート表面側から２０６ｎの照射距離
で３０秒間露光した。<Surface> Adhesive force 180g/20mm, Holding power 0.2■/hour <Back> Adhesive force 300g/2On+m, Holding force 0.3W
rrn/hour Example 3 50 parts of butyl acrylate, 40 parts of 2-ethylhexyl acrylate, 10 parts of acrylic acid, and 100 parts of toluene were charged into a polymerization pot purged with inert gas, and benzoyl peroxide 2 was added as a polymerization initiator. Solution polymerization was carried out using On the other hand, a 2% by weight solution of benzophenone in toluene was sprayed onto a 25 μm thick polyester film separator, and the polymer obtained by the solution polymerization was applied onto this coated surface using a reverse coater. After drying, an adhesive sheet with a glue thickness of 60 μm and benzophenone adhered to the back side at a ratio of 0.5 parts to 100 parts of the copolymer was prepared, and immediately
The sheet was exposed to light for 30 seconds using a W mercury lamp at an irradiation distance of 206 nm from the sheet surface side.
得うれた基材レス両面接着テープは下記の特性を示した
。The obtained base material-less double-sided adhesive tape exhibited the following properties.
〈表面〉
接着力 ４８０ｇ／２０調 、保持力 ０．５諭７４寺
間〈裏面〉
接着力 ４００ｇ／２０ｍ＋ｎ 、保持力 ０．４ｍ
＋ｎ／Ｒ間実施例４
アクリル酸エチル４５部、アクリル酸ブチル４５部、ア
クリル酸１０部およびトルエン１００部を不活性ガスで
置換した重合釜中に仕込み、重合開始剤としてアゾビス
イソブチロニトリル２部を用いて溶液重合を行ない、得
られた重合物をリバースコータにて２５μｍ厚のポリエ
ステルフィルムセパレータ上に塗布、乾燥してセパレー
タで裏打ちされた糊厚１２０μｍの粘着剤シートを作製
した。この粘着剤シートの表面に、２−メチルアントラ
キノンの１重量％アセトン溶液をスプレーにて共重合ポ
リマー１００部に対して２−メチルアントラキノンが０
．６部となる割合で吹き付は塗布し、１分後に４００Ｗ
水銀ランプにてシートの表裏画面側より２０ｃｒｎの照
射距離にて１分間同時に露光した。得られた基材レス両
面接着テープは下記の特性を示した。<Surface> Adhesive force 480g/20 tone, Holding force 0.5 74 Terama <Back> Adhesive force 400g/20m+n, Holding force 0.4m
+n/R Example 4 45 parts of ethyl acrylate, 45 parts of butyl acrylate, 10 parts of acrylic acid, and 100 parts of toluene were charged into a polymerization pot purged with inert gas, and azobisisobutyronitrile was added as a polymerization initiator. Solution polymerization was carried out using 2 parts, and the obtained polymer was coated on a 25 μm thick polyester film separator using a reverse coater, and dried to produce a separator-backed adhesive sheet with an adhesive thickness of 120 μm. A 1% by weight acetone solution of 2-methylanthraquinone was sprayed onto the surface of this adhesive sheet, so that 2-methylanthraquinone was added to 0% per 100 parts of the copolymer.
．． Spray at a ratio of 6 parts and apply 400W after 1 minute.
The sheet was simultaneously exposed to light from the front and back sides of the sheet for 1 minute at an irradiation distance of 20 crn using a mercury lamp. The obtained base material-less double-sided adhesive tape exhibited the following properties.
く表面〉
接着力 ３２０ｇ／２０ｍｍ 、保持ｊＥ Ｏ，４
−ｍｍ／Ｉｔ寺間く裏面〉
接着力 ５８０ｇ／２０ｍｍ 、保持力 ０．７ｍｍ
／を時間比較例１
実施例１にて得られた溶液重合物に２−メチルアントラ
キノンの１重量％トルエン溶液を共重合ポリマー１００
部に対して０．５部添加混合し、これをリバースコータ
にて剥離紙上に塗布乾燥して剥離紙で裏打ちされた糊厚
３ｏμｍの粘着剤シートを作製した。この粘着剤シート
を４００Ｗ水銀ランプにてシート表面側より２０αの照
射距離で３０秒間露光した。得られた基材レス両面接着
テープは下記の特性を示した。Surface> Adhesive strength 320g/20mm, retention jE O,4
-mm/It Teramaku back side〉 Adhesive strength 580g/20mm, Holding strength 0.7mm
/ time Comparative Example 1 Copolymerization of 1% by weight toluene solution of 2-methylanthraquinone to the solution polymer obtained in Example 1 Polymer 100
0.5 part to 100 parts was added and mixed, and this was coated on a release paper using a reverse coater and dried to produce a pressure-sensitive adhesive sheet with an adhesive thickness of 3 μm and lined with release paper. This adhesive sheet was exposed to light from a 400W mercury lamp for 30 seconds at an irradiation distance of 20α from the sheet surface side. The obtained base material-less double-sided adhesive tape exhibited the following properties.
〈表面〉
接着力 ２５０ｇ／２０ｍ 、保持力 ０．３ ａｍ
／ｌｌ＠ 聞く裏面〉
接着力 ２８０ｇ／２０ｙｎｍ 、保持力 ０．３ｍ
ｍ／＃ｆ間比較例２
実施例４にて得られた溶液共重合物に、ベンゾフェノン
０．６部をトルエン１５０部に溶解した溶液を添加混合
し、これをリバースコータにて２５μｍ厚のポリエステ
ルフィルムセパレータ上に塗布、乾燥してセパレータで
裏打ちされた糊厚１２０μｍの粘着剤シートを作製した
。この粘着剤シートを４００Ｗ水銀ランプにてシートの
表裏両面側より２０ｃｍの照射距離にて１分間同時に露
光した。<Surface> Adhesive strength 250g/20m, holding power 0.3 am
/ll@ Listening back side〉 Adhesive strength 280g/20ynm, Holding strength 0.3m
Comparative example 2 between m/#f A solution prepared by dissolving 0.6 parts of benzophenone in 150 parts of toluene was added to and mixed with the solution copolymer obtained in Example 4, and this was coated with a 25 μm thick polyester using a reverse coater. The adhesive sheet was coated on a film separator and dried to produce a 120 μm adhesive sheet backed with a separator. This adhesive sheet was simultaneously exposed to light for 1 minute using a 400 W mercury lamp at an irradiation distance of 20 cm from both sides of the sheet.
得られた基材レス両面接着テープは下記の特性を示した
。The obtained base material-less double-sided adhesive tape exhibited the following properties.
〈表面〉
接着力 ４５０ｇ／２０ｍｍ 、保持力 ０．５ ｍ
＋ｎ／ｆＪ’４ａ”Ｊ〈裏面〉
接着力 ４９０ｇ／２０ｍｎ＋ 、保持力 ０．５ｍ
ｍ／詩間特許出願人 日東電気工業株式会社
５４３<Surface> Adhesive strength 450g/20mm, holding power 0.5m
+n/fJ'4a"J (back side) Adhesive force 490g/20mn+, Holding force 0.5m
m/Shima Patent Applicant: Nitto Electric Industry Co., Ltd. 543
Claims (1)
シートを作製し、この粘着剤シートの片面に光架橋増感
剤を含む液剤を均一に被着して光照射処理を施すことを
特徴とする両面接着テープの製造方法。(1) A pressure-sensitive adhesive sheet mainly made of a polymer of acrylic monomer is prepared, a liquid agent containing a photocrosslinking sensitizer is uniformly applied to one side of the pressure-sensitive adhesive sheet, and a photo-irradiation treatment is performed. Features: A manufacturing method for double-sided adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57166896A JPS5956471A (en) | 1982-09-24 | 1982-09-24 | Preparation of double-faced adhesive tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57166896A JPS5956471A (en) | 1982-09-24 | 1982-09-24 | Preparation of double-faced adhesive tape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5956471A true JPS5956471A (en) | 1984-03-31 |
| JPH0450351B2 JPH0450351B2 (en) | 1992-08-14 |
Family
ID=15839631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57166896A Granted JPS5956471A (en) | 1982-09-24 | 1982-09-24 | Preparation of double-faced adhesive tape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5956471A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6123673A (en) * | 1984-07-11 | 1986-02-01 | Sekisui Chem Co Ltd | Double-coated, pressure-sensitive adhesive tape or sheet |
| EP0994167A2 (en) * | 1998-10-12 | 2000-04-19 | Beiersdorf Aktiengesellschaft | Crosslinking of double-sided adhesive tapes using electron beams or UV-radiation |
| WO2002019393A2 (en) * | 2000-08-30 | 2002-03-07 | Nitto Denko Corporation | Method of processing a semiconductor wafer |
| US10634263B2 (en) | 2015-07-03 | 2020-04-28 | Henkel Ag & Co. Kgaa | Valve device |
| WO2022045130A1 (en) * | 2020-08-28 | 2022-03-03 | 日東電工株式会社 | Photocurable adhesive sheet |
| CN115397936A (en) * | 2020-03-27 | 2022-11-25 | 日东电工株式会社 | Method for producing adhesive sheet and adhesive sheet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115335477A (en) * | 2020-03-27 | 2022-11-11 | 日东电工株式会社 | Method for producing adhesive sheet and adhesive sheet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS515664A (en) * | 1974-07-04 | 1976-01-17 | Matsushita Electric Ind Co Ltd | Ekitaikongobutsuno enshinbunrihoho |
| JPS5214249A (en) * | 1975-07-23 | 1977-02-03 | Showa Denki Kogyo Kk | Electric heating method for heating fluid |
| JPS52105941A (en) * | 1976-03-01 | 1977-09-06 | Doobaato Chem Co | Method of manufacturing pressureesensitive adhesive coating sheet material |
| JPS5442014A (en) * | 1977-09-09 | 1979-04-03 | Tobishima Construct Co Ltd | Method of constructing liquid storage tank |
| JPS55145778A (en) * | 1979-04-26 | 1980-11-13 | Nat Starch Chem Corp | Pressure sensitive melt adhesive agent cured by exposing electron beam irradiation |
-
1982
- 1982-09-24 JP JP57166896A patent/JPS5956471A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS515664A (en) * | 1974-07-04 | 1976-01-17 | Matsushita Electric Ind Co Ltd | Ekitaikongobutsuno enshinbunrihoho |
| JPS5214249A (en) * | 1975-07-23 | 1977-02-03 | Showa Denki Kogyo Kk | Electric heating method for heating fluid |
| JPS52105941A (en) * | 1976-03-01 | 1977-09-06 | Doobaato Chem Co | Method of manufacturing pressureesensitive adhesive coating sheet material |
| JPS5442014A (en) * | 1977-09-09 | 1979-04-03 | Tobishima Construct Co Ltd | Method of constructing liquid storage tank |
| JPS55145778A (en) * | 1979-04-26 | 1980-11-13 | Nat Starch Chem Corp | Pressure sensitive melt adhesive agent cured by exposing electron beam irradiation |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6123673A (en) * | 1984-07-11 | 1986-02-01 | Sekisui Chem Co Ltd | Double-coated, pressure-sensitive adhesive tape or sheet |
| EP0994167A2 (en) * | 1998-10-12 | 2000-04-19 | Beiersdorf Aktiengesellschaft | Crosslinking of double-sided adhesive tapes using electron beams or UV-radiation |
| EP0994167A3 (en) * | 1998-10-12 | 2000-08-16 | Beiersdorf Aktiengesellschaft | Crosslinking of double-sided adhesive tapes using electron beams or UV-radiation |
| WO2002019393A2 (en) * | 2000-08-30 | 2002-03-07 | Nitto Denko Corporation | Method of processing a semiconductor wafer |
| WO2002019393A3 (en) * | 2000-08-30 | 2002-06-06 | Nitto Denko Corp | Method of processing a semiconductor wafer |
| US6803293B2 (en) | 2000-08-30 | 2004-10-12 | Nitto Denko Corporation | Method of processing a semiconductor wafer |
| US10634263B2 (en) | 2015-07-03 | 2020-04-28 | Henkel Ag & Co. Kgaa | Valve device |
| CN115397936A (en) * | 2020-03-27 | 2022-11-25 | 日东电工株式会社 | Method for producing adhesive sheet and adhesive sheet |
| EP4130182A4 (en) * | 2020-03-27 | 2023-09-20 | Nitto Denko Corporation | Method for producing pressure-sensitive adhesive sheet, and pressure-sensitive adhesive sheet |
| WO2022045130A1 (en) * | 2020-08-28 | 2022-03-03 | 日東電工株式会社 | Photocurable adhesive sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0450351B2 (en) | 1992-08-14 |
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