JPS6389585A - Adhesive sheet and production thereof - Google Patents
Adhesive sheet and production thereofInfo
- Publication number
- JPS6389585A JPS6389585A JP61235290A JP23529086A JPS6389585A JP S6389585 A JPS6389585 A JP S6389585A JP 61235290 A JP61235290 A JP 61235290A JP 23529086 A JP23529086 A JP 23529086A JP S6389585 A JPS6389585 A JP S6389585A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- sheet
- foamed
- foam sheet
- foam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 68
- 239000000853 adhesive Substances 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000006260 foam Substances 0.000 claims abstract description 45
- 239000000839 emulsion Substances 0.000 claims abstract description 23
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 6
- 238000010907 mechanical stirring Methods 0.000 claims description 5
- 239000004005 microsphere Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 14
- 239000002562 thickening agent Substances 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 6
- 239000003381 stabilizer Substances 0.000 abstract description 5
- -1 acryl Chemical group 0.000 abstract description 4
- 229940088990 ammonium stearate Drugs 0.000 abstract description 3
- JPNZKPRONVOMLL-UHFFFAOYSA-N azane;octadecanoic acid Chemical compound [NH4+].CCCCCCCCCCCCCCCCCC([O-])=O JPNZKPRONVOMLL-UHFFFAOYSA-N 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002390 adhesive tape Substances 0.000 description 14
- 238000005187 foaming Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 229920002799 BoPET Polymers 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Adhesive Tapes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、構造体の接合に適した感圧性の接着シート
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pressure-sensitive adhesive sheet suitable for joining structures.
金属同士、金属とプラスチック等の構造体の接合には、
接着剤や両面接着テープ等による接着、リベットによる
機械的結合等の手段があるが、このうち接着テープは作
業操作性がよいという特徴を有している。この種の接着
シートに関し、平滑でない面を有するものの接合に適し
た接着テープとして柔軟なフオームを基材としてこれに
粘着剤を塗布した構造のものが知られている（例えば、
特開昭４７−３０７４３号公報）。For joining structures such as metal to metal or metal to plastic,
There are methods such as adhesion using adhesives, double-sided adhesive tape, etc., and mechanical bonding using rivets, but among these, adhesive tape is characterized by good workability. Regarding this type of adhesive sheet, there are known adhesive tapes that have a flexible foam base material coated with an adhesive and are suitable for bonding materials with uneven surfaces (for example,
(Japanese Unexamined Patent Publication No. 47-30743).
（発明が解決しようとする問題点〕
前記特開昭４７−３０７４３号公報のウレタンフオーム
を基材に用いた粘着テープは、耐候性が悪いため次第に
硬くもろ（なって接着性能が低下する欠点がある。(Problems to be Solved by the Invention) The adhesive tape disclosed in JP-A-47-30743 that uses urethane foam as a base material has the disadvantage that it gradually becomes hard and brittle due to its poor weather resistance, resulting in a decrease in adhesive performance. be.
また、ポリエチレンやポリ酢酸ビニル等の樹脂から作ら
れたフオームを基材とする粘着テープは、変形応力の小
さな柔軟なものとしたとき、伸度が低下して応力緩和性
と耐歪伸度の二つの物性に対して接着に適したバランス
が取りにくい。In addition, when adhesive tapes based on foams made from resins such as polyethylene and polyvinyl acetate are made to be flexible and have low deformation stress, their elongation decreases, resulting in poor stress relaxation and strain/elongation resistance. It is difficult to find a balance suitable for adhesion between the two physical properties.
更に、これらのフオームは独立気泡を有しているので、
被着体のミクロ的凹凸に対して反撥力が生じ浮き易く接
着力の低下が起こる欠点があった。Furthermore, since these foams have closed cells,
This has the disadvantage that a repulsive force is generated against the microscopic irregularities of the adherend and the adhesive tends to float, resulting in a decrease in adhesive strength.
この発明は、被着体の割裂力や剪断力が裔くて剥がれに
くいだけでなく、被着体のミクロ的な凹凸に追従し、し
かも耐候性、耐湿性等が優れる等永久接着用途に必要な
物性を持つ、構造体接合用に適した接着テープを提供す
ることを目的とする。This invention not only resists the splitting force and shearing force of the adherend and resists peeling, but also follows the microscopic irregularities of the adherend, and has excellent weather resistance and moisture resistance, which is necessary for permanent adhesive applications. The purpose of this invention is to provide an adhesive tape that has excellent physical properties and is suitable for joining structures.
この発明の接着テープは、アクリルエマルジョンが攪拌
起泡化され、この起泡化物が加熱乾燥されてフオーム状
シートに形成され、該フオーム状シートに粘着剤が含浸
もしくは積層されていることを特徴とする。The adhesive tape of the present invention is characterized in that an acrylic emulsion is stirred and foamed, the foamed product is heated and dried to form a foam sheet, and the foam sheet is impregnated with or laminated with an adhesive. do.
また、この発明の接着テープの製造方法は、アクリルエ
マルジョンを機械的攪拌によって気体と攪拌して起泡化
物を生成し、該起泡化物を基材面上に０．１〜２ｎの厚
みに塗布して加熱乾燥して密度０．１〜０．７ｇ／ｃＩ
１１のフオーム状シートを形成し、該フオーム状シート
に粘着剤を含浸もしくは積層することを特徴とする。In addition, the method for producing an adhesive tape of the present invention involves stirring an acrylic emulsion with gas by mechanical stirring to generate a foamed product, and applying the foamed product to a thickness of 0.1 to 2 nm on a base material surface. and heat-dried to a density of 0.1 to 0.7 g/cI.
The method is characterized in that a foam sheet of No. 11 is formed, and the foam sheet is impregnated with or laminated with an adhesive.
上記アクリルエマルジョンとしては、起泡性がよいこと
が必要である。即ち、機械的攪拌により、気体（ガス）
を十分に混入でき、しかも脱泡速度が遅く、且つ得られ
た起泡物が塗布できる程度に粘度が高いことが好ましい
。The above-mentioned acrylic emulsion needs to have good foaming properties. That is, by mechanical stirring, gas
It is preferable that the foamed material can be sufficiently mixed with the foam, have a slow defoaming rate, and have a high viscosity to the extent that the resulting foamed product can be coated.
また、このエマルジョンから得られたフオーム状シート
は十分な伸度と弾性を有することが必要である。そして
、接着用途に応じて柔軟性を適当にコントロールする。Further, the foam sheet obtained from this emulsion must have sufficient elongation and elasticity. Then, the flexibility is appropriately controlled depending on the adhesive application.
例えば、基材のフオーム状シートの柔軟性を変えること
がその手段の一つである。この場合、エマルジョンから
得られたポリマーそのものが柔軟で、且つ伸度の高いこ
とが必要であり、その目安として、ガラス転移点（Ｔｇ
）の低いアクリルエマルジョンを選択する。また、他の
方法としては、起泡倍率を高（する方法があり、アクリ
ルエマルジョンに気体を高い比率で混入させることで達
成される。For example, one way to do this is to change the flexibility of the base foam sheet. In this case, the polymer itself obtained from the emulsion must be flexible and have high elongation, and as a guideline, the glass transition point (Tg
) Choose an acrylic emulsion with a low Another method is to increase the foaming ratio, which is achieved by mixing a high proportion of gas into the acrylic emulsion.
実際に作り得る起泡倍率は、５０％程度の固型分濃度の
アクリルエマルジョンを用いた場合、湿潤状態で２〜１
０倍程度であり、最終の接着テープに要求される柔軟性
に応じて選択される。When using an acrylic emulsion with a solid content concentration of about 50%, the foaming ratio that can actually be created is 2 to 1 in a wet state.
It is approximately 0 times, and is selected depending on the flexibility required for the final adhesive tape.
また、接着テープの柔軟性に影響する他の要因として、
起泡粒径があり、これが大きいと伸度は上がる傾向にあ
るが、シート表面が凹凸になり、また、小さすぎるとク
ラックが生じてそこから破断するので好ましくなく、一
般に１０〜２００μの粒径の範囲とされる。In addition, other factors that affect the flexibility of adhesive tapes include:
There is a foaming particle size, and if it is large, the elongation tends to increase, but if it is too small, it will cause cracks and breakage, which is not preferable, and generally the particle size is 10 to 200μ The range of
さらに、起泡粒径および起泡倍率を調整するために、整
泡剤および増粘剤を添加できる。整泡剤として例えばス
テアリン酸アンモニウムを用いれば起泡粒径が均一微細
化するとともに起泡倍率が向し、起泡が安定化する。ま
た、増粘剤として例えばロームアンドハース社のＡＳＥ
−６０（商品名）が好適に用いられ、塗布し易い粘度ま
で上昇でき、また、粘度を上昇させることにより、起泡
粒径を小さくし、起泡倍率を下げる働きもある。それ故
、目的とする起泡粒径、起泡倍率、起泡物粘度のバラン
スは、前記整泡剤および増粘剤の添加量をコントロール
することにより行われる。この発明においては、通常、
アクリルエマルジョン１００重量部に対し、整泡剤０．
５〜１０重量部、増粘剤０〜５重量部の範囲で選択され
る。Furthermore, a foam stabilizer and a thickener can be added in order to adjust the foam particle size and foaming ratio. If, for example, ammonium stearate is used as a foam stabilizer, the diameter of foamed particles becomes uniform and fine, the foaming ratio increases, and foaming becomes stable. In addition, as a thickener, for example, Rohm and Haas' ASE
-60 (trade name) is suitably used and can increase the viscosity to a level that makes it easy to apply.Increasing the viscosity also has the effect of reducing the foaming particle size and lowering the foaming ratio. Therefore, the desired balance of foamed particle size, foaming ratio, and foamed product viscosity is achieved by controlling the amounts of the foam stabilizer and thickener added. In this invention, usually
0.0% foam stabilizer per 100 parts by weight of acrylic emulsion.
The amount of the thickener is selected from 5 to 10 parts by weight, and the thickener from 0 to 5 parts by weight.
また、アクリルエマルジョンの起泡化物が加熱乾燥され
たフオーム状シートは、密度０．１〜０．７ｇ／ｃｊの
範囲のものが好適に用いられる。Further, a foam sheet obtained by heating and drying a foamed acrylic emulsion having a density in the range of 0.1 to 0.7 g/cj is preferably used.
次に、このフオーム状シートに、粘着剤を含浸もしくは
積層する方法について説明する。Next, a method of impregnating or laminating this foam sheet with an adhesive will be explained.
この発明で用いられる粘着剤としては、シリコン系、天
然ゴム系、アルリル系の各種粘着剤が用いられるが、耐
水性、耐湿性、耐候性、価格等から総合的に勘案すれば
アクリル系粘着剤が好ましい。このアクリル系粘着剤は
溶液重合タイプのものや、エマルジョン重合タイプのも
のでもよい。As the adhesive used in this invention, various types of adhesives such as silicone-based, natural rubber-based, and aryl-based adhesives are used, but acrylic-based adhesives are preferable from the viewpoint of water resistance, humidity resistance, weather resistance, price, etc. is preferred. This acrylic adhesive may be of a solution polymerization type or an emulsion polymerization type.
上記フオーム状シートに粘着剤を含浸させる手段として
は、例えば、フオーム状シートを適当な圧力をかけなが
ら粘着剤中に設けられたロール間を通過させる方法があ
る。このとき、フオーム状シートへの粘着剤の含浸量は
、ロール間の圧力と、粘着剤中の滞留時間等で調整され
る。As a means for impregnating the foam sheet with the adhesive, for example, there is a method of passing the foam sheet between rolls provided in the adhesive while applying an appropriate pressure. At this time, the amount of adhesive impregnated into the foam sheet is adjusted by the pressure between the rolls, the residence time in the adhesive, and the like.
また、フオーム状シートに粘着剤を積層する方法として
は、例えば、粘着剤を離型性を有するフィルムに塗布乾
燥した後、これをフオーム状シートに圧着転写すること
により行われる。Further, as a method for laminating the adhesive on the foam sheet, for example, the adhesive is applied to a film having release properties, dried, and then pressure-transferred onto the foam sheet.
なお、フオーム状シートの両面に粘着剤を積層する場合
には背面に対し上記と同様な操作を繰り返せばよい。In addition, when laminating the adhesive on both sides of the foam sheet, the same operation as above may be repeated on the back side.
前記粘着剤を含浸したものに対して、更に上記方法で粘
着剤を積層してなお一層の接合力を付与することも可能
である。It is also possible to further apply an adhesive to the material impregnated with the above-mentioned adhesive by laminating the adhesive in the above-mentioned method to provide even more bonding strength.
また、フオーム状シートの表裏両面に積層する粘着剤は
、同一の粘着剤の他、被着体が異なったり或いは被着体
の表面状態が異なる等の場合、接着特性を勘案して異な
る粘着剤を選択できる。In addition, the adhesive to be laminated on both the front and back sides of the foam sheet may be the same adhesive, or if the adherend is different or the surface condition of the adherend is different, a different adhesive may be used in consideration of the adhesive properties. You can choose.
粘着剤の含浸量を極端に高める必要がある場合には、ア
クリルエマルジョンに中空ガラス微球体或いはプラスチ
ック微球体を混合し、起泡してフオーム状シートＳこす
れば、フオーム状シート中に空間を設けることができる
ため、粘着剤含浸時の圧縮の際にへたりを防ぐことがで
きてその含浸量を高めることができる。If it is necessary to extremely increase the amount of adhesive impregnated, spaces can be created in the foam sheet by mixing hollow glass microspheres or plastic microspheres with the acrylic emulsion, foaming it, and rubbing it against the foam sheet S. Therefore, it is possible to prevent sagging during compression during impregnation with an adhesive, thereby increasing the amount of impregnation.
この場合に添加される微球体は粒径１０〜２００μのも
のが好ましい。The microspheres added in this case preferably have a particle size of 10 to 200 microns.
この発明の接着シートにおいて、アクリルエマルジョン
の起泡化物から生成されたフオーム状シートに粘着剤を
含浸したものは、粘着剤に発泡剤を添加して発泡させた
気泡含有粘着シートでは得られない優れた凝集力を有し
、また、フオーム状シートは連続気泡構造であるため、
被着体の凹凸に対してよく対応して接着面積が大きくな
り、割裂力や剪断力といった構造体接合に必要な基本物
性が優れているばかりでなく、耐湿性、耐候性もよい。In the adhesive sheet of the present invention, a foam sheet produced from a foamed acrylic emulsion and impregnated with an adhesive has advantages that cannot be obtained with a foam-containing adhesive sheet that is foamed by adding a foaming agent to the adhesive. It has a strong cohesive force, and since the foam sheet has an open cell structure,
It responds well to the irregularities of the adherend, resulting in a large adhesive area, and not only has excellent basic physical properties necessary for bonding structures, such as splitting force and shearing force, but also has good moisture resistance and weather resistance.
また、粘着剤をフオーム状シートに積層したものにおい
ては、保持力を有するが接着力やタック性に乏しいとい
った粘着剤の接着力やタンク性をフオーム状シートの柔
軟性で接着効率を上げてカバーすることになり構造体接
着シートとして有用となる。In addition, in the case of adhesives laminated on foam sheets, the flexibility of the foam sheets increases adhesive efficiency and compensates for the adhesive strength and tankiness of the adhesives, which have holding power but lack adhesive strength and tackiness. This makes it useful as a structure adhesive sheet.
また、この発明の製造方法によれば、アクリルエマルジ
ョンを機械的撹拌により起泡化させ、加熱乾燥すること
により、構造体接合用接着シートの基材として優れた連
続気泡構造のフオーム状シートが容易に得られる。Furthermore, according to the manufacturing method of the present invention, by foaming the acrylic emulsion by mechanical stirring and then heating and drying it, it is easy to produce a foam sheet with an open cell structure that is excellent as a base material for an adhesive sheet for bonding structures. can be obtained.
実施例
アクリルエマルジョン（Ｅ３５８、ロームアンドハース
社）１００重量部、ステアリン酸アンモニウム３重量部
、増粘剤（ＡＳＥ−６０、ロームアンドハース社）１部
を混合し、ホイツパ−で攪拌して起泡化した。この起泡
化物を離型性のあるＰＥＴフィルム上に１．５龍のクリ
アランスを有するナイフコーターで塗布した。これを７
０℃の乾燥ゾーンにおいて２分間加熱架橋した。ここで
得られたフオーム状シートは密度０．３５ｇ／ｃ４．厚
さｌ、 ｌ ｍｍであった。Example 100 parts by weight of acrylic emulsion (E358, Rohm and Haas), 3 parts by weight of ammonium stearate, and 1 part of thickener (ASE-60, Rohm and Haas) were mixed and foamed by stirring with a whipper. It became. This foamed product was applied onto a releasable PET film using a knife coater having a clearance of 1.5 mm. This is 7
Heat crosslinking was carried out for 2 minutes in a drying zone at 0°C. The foam sheet obtained here has a density of 0.35 g/c4. The thickness was l, l mm.
このフオーム状シートをアクリルエマルジョン粘着剤（
Ｎ １１３０、ロームアンドハース社）中に浸漬しつつ
ロールで圧縮しながら粘着剤を含浸させ、次いで７０℃
のオーブンで１０分加熱して乾燥させた。得られた接着
テープは膜厚１．２龍、密度０．７５ｇ／ｃＪであった
。This foam sheet is coated with acrylic emulsion adhesive (
N 1130, Rohm and Haas) and compressed with a roll to impregnate the adhesive, and then heated to 70°C.
It was dried by heating it in an oven for 10 minutes. The resulting adhesive tape had a film thickness of 1.2 mm and a density of 0.75 g/cJ.
比較例１．２
市販のウレタンフオーム（密度０．１ｇ／ｃＪ、厚さ１
．２１１ ）の両面に実施例１で用いたアクリルエマル
ジョン粘着剤を１００μ厚みに積層乾燥して接着テープ
を得た（比較例１）。Comparative Example 1.2 Commercially available urethane foam (density 0.1 g/cJ, thickness 1
．． The acrylic emulsion adhesive used in Example 1 was laminated to a thickness of 100 μm on both sides of 211) and dried to obtain an adhesive tape (Comparative Example 1).
市販のポリエチレンフオーム（密度０．０５ ｇ／ｃｆ
ｌ、厚さ０．９ ａｍ ）の両面に実施例１で用いたア
クリルエマルジョン粘着剤を１００μ厚みに積層乾燥し
て接着テープを得た（比較例２）。Commercially available polyethylene foam (density 0.05 g/cf
The acrylic emulsion adhesive used in Example 1 was laminated to a thickness of 100 μm on both sides of a tape (Comparative Example 2).
（結果）
透明アクリル板（ＩＱＸ５ＸＱ、３値）に２０１漠の間
隔をあけて２枚のＰＥＴフィルム（２０鶴巾、１００μ
厚さ）を長手方向と直角に中心近くに置き、この２枚の
ＰＥＴフィルムと直角方向に上記各種の接着テープをそ
れぞれはりつけた上記と同じアクリル板を重ね合わせ、
２ ｋｇのローラーを一往復させて圧着した。(Results) Two sheets of PET film (20 tsuruhigai, 100μ
Thickness) is placed near the center at right angles to the longitudinal direction, and the same acrylic plates as above are stacked on top of these two PET films and each of the above adhesive tapes is pasted at right angles to the two PET films.
A 2 kg roller was moved back and forth once to apply pressure.
そして、下から接着した部分の面積をグラフに写しとる
ことにより計算して接着効率（％）をみた結果、実施例
においては１００％（接着直後および１週間後共）であ
り、比較例１では１００％（接着直後および１週間後共
）、比較例２では接着直後８０％、１週間後６０％であ
った。The adhesion efficiency (%) was calculated by copying the area of the bonded part from below onto a graph, and as a result, it was 100% in Example (both immediately after bonding and after 1 week), and in Comparative Example 1. In Comparative Example 2, it was 80% immediately after adhesion and 60% after one week.
また、透明アクリル板に上記各種接着テープ（２０顛巾
、３０１−長さ）をはりつけ、裏面にハＰ Ｅ Ｔフィ
ルム（１００μ厚さ）をはりつけた。そしてアクリル板
面からウエザロメーターの紫外光を１週間照射した。こ
の照射前後における剪断力（ｋｇ ／ ａｍ ）を１０
ＭＭ／分の速度でテンタロン測定機で測定した結果は次
表のとおりであった。Further, the above various adhesive tapes (20 width, 301 mm length) were attached to a transparent acrylic plate, and a PET film (100 μm thick) was attached to the back side. The surface of the acrylic plate was then irradiated with ultraviolet light from a Weatherometer for one week. The shearing force (kg/am) before and after this irradiation was 10
The results measured with a tentalon measuring machine at a speed of MM/min are as shown in the following table.
この発明の接着シートにおいて、粘着剤を含浸したタイ
プのものは、粘着剤に発泡剤を添加して発泡させた気泡
含有粘着シートでは得られない優れた凝集力を有し、ま
た、フオーム状シートは連続気泡構造となるため、被着
体の凹凸に対してよく対応して接着面積が大きくなり・
割裂力や剪断力といった構造体接合に必要な基本物性が
優れているばかりでなく、耐湿性、耐候性もよい、また
、粘着剤を積層したタイプのものにおいては、保持力を
有するが接着力やタック性に乏しいといった粘着剤の接
着力やタック性をフオーム状シートの柔軟性で接着効率
を上げてカバーされることになり構造体接着シートとし
て有用となる。Among the adhesive sheets of the present invention, the adhesive-impregnated type has excellent cohesive strength that cannot be obtained with bubble-containing adhesive sheets that are foamed by adding a foaming agent to the adhesive. Since it has an open cell structure, it responds well to the irregularities of the adherend and has a large bonding area.
Not only do they have excellent basic physical properties necessary for bonding structures, such as splitting force and shearing force, but they also have good moisture resistance and weather resistance.Also, products with a laminated adhesive have holding power, but adhesive strength is low. The adhesive strength and tackiness of adhesives, which are poor, are covered by the flexibility of the foam sheet, increasing adhesion efficiency, making it useful as a structural adhesive sheet.
また、この発明の製造方法によれば、アクリルエマルジ
ョンを機械的攪拌により起泡化させ、加熱乾燥すること
により、構造体接合用接着シートの基材として優れた性
能を有するフオーム状シートを容易に得、かつ、このシ
ートに粘着剤を含浸もしくは積層するだけで容易に接着
シートを製造できる。Further, according to the manufacturing method of the present invention, by foaming the acrylic emulsion by mechanical stirring and heating and drying it, it is possible to easily produce a foam sheet that has excellent performance as a base material for an adhesive sheet for bonding structures. Moreover, an adhesive sheet can be easily produced by simply impregnating or laminating this sheet with an adhesive.
Claims (1)
化物が加熱乾燥されてフォーム状シートに形成され、該
フォーム状シートに粘着剤が含浸もしくは積層されてい
ることを特徴とする接着シート。 ２、アクリルエマルジョンを機械的攪拌によって気体と
攪拌して起泡化物を生成し、該起泡化物を基材面上に０
．１〜２１の厚みに塗布して加熱乾燥して密度０．１〜
０．７ｇ／ｃｍ＾３のフォーム状シートを形成し、該フ
ォーム状シートに粘着剤を含浸もしくは積層することを
特徴とする接着シートの製造方法。 ３、アクリルエマルジョンが粒径１０〜２００μのプラ
スチック微球体もしくは中空ガラス微球体を含むもので
ある特許請求の範囲第１項もしくは第２項記載の接着シ
ート。[Claims] 1. The acrylic emulsion is stirred and foamed, the foamed product is heated and dried to form a foam sheet, and the foam sheet is impregnated with or laminated with an adhesive. adhesive sheet. 2. Stir the acrylic emulsion with gas by mechanical stirring to generate a foamed product, and spread the foamed product onto the substrate surface.
．． Apply to a thickness of 1 to 21 and heat dry to achieve a density of 0.1 to 21.
A method for producing an adhesive sheet, which comprises forming a foam sheet of 0.7 g/cm^3, and impregnating or laminating the foam sheet with an adhesive. 3. The adhesive sheet according to claim 1 or 2, wherein the acrylic emulsion contains plastic microspheres or hollow glass microspheres with a particle size of 10 to 200 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61235290A JPS6389585A (en) | 1986-10-01 | 1986-10-01 | Adhesive sheet and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61235290A JPS6389585A (en) | 1986-10-01 | 1986-10-01 | Adhesive sheet and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6389585A true JPS6389585A (en) | 1988-04-20 |
Family
ID=16983917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61235290A Pending JPS6389585A (en) | 1986-10-01 | 1986-10-01 | Adhesive sheet and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6389585A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0445184A (en) * | 1990-06-11 | 1992-02-14 | Toyo Kemitetsuku Kk | Tacky adhesion foam sheet and its production |
| JP2006022189A (en) * | 2004-07-07 | 2006-01-26 | Nitto Denko Corp | Bubble-containing viscoelastic composition, and pressure-sensitive tape or sheet |
| JP2007521362A (en) * | 2003-06-20 | 2007-08-02 | スリーエム イノベイティブ プロパティズ カンパニー | Linerless double-sided pressure sensitive adhesive foam tape |
| JP2010138409A (en) * | 2010-03-10 | 2010-06-24 | Nitto Denko Corp | Bubble-containing viscoelastic composition and pressure-sensitive adhesive tape or sheet |
| JP2011168793A (en) * | 2011-04-14 | 2011-09-01 | Nitto Denko Corp | Air bubble-containing viscoelastic composition, and pressure-sensitive adhesive tape or sheet |
| JP2016121323A (en) * | 2014-12-25 | 2016-07-07 | 株式会社イノアック技術研究所 | Sheet and manufacturing method of same |
-
1986
- 1986-10-01 JP JP61235290A patent/JPS6389585A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0445184A (en) * | 1990-06-11 | 1992-02-14 | Toyo Kemitetsuku Kk | Tacky adhesion foam sheet and its production |
| JP2007521362A (en) * | 2003-06-20 | 2007-08-02 | スリーエム イノベイティブ プロパティズ カンパニー | Linerless double-sided pressure sensitive adhesive foam tape |
| JP4847324B2 (en) * | 2003-06-20 | 2011-12-28 | スリーエム イノベイティブ プロパティズ カンパニー | Linerless double-sided pressure sensitive adhesive foam tape |
| JP2006022189A (en) * | 2004-07-07 | 2006-01-26 | Nitto Denko Corp | Bubble-containing viscoelastic composition, and pressure-sensitive tape or sheet |
| JP2010138409A (en) * | 2010-03-10 | 2010-06-24 | Nitto Denko Corp | Bubble-containing viscoelastic composition and pressure-sensitive adhesive tape or sheet |
| JP2011168793A (en) * | 2011-04-14 | 2011-09-01 | Nitto Denko Corp | Air bubble-containing viscoelastic composition, and pressure-sensitive adhesive tape or sheet |
| JP2016121323A (en) * | 2014-12-25 | 2016-07-07 | 株式会社イノアック技術研究所 | Sheet and manufacturing method of same |
| JP2020062883A (en) * | 2014-12-25 | 2020-04-23 | 株式会社イノアック技術研究所 | Laminate sheet and manufacturing method of the laminate sheet |
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