JPS6026518B2 - Manufacturing method of adhesive sheet - Google Patents

Manufacturing method of adhesive sheet

Info

Publication number
JPS6026518B2
JPS6026518B2 JP12209680A JP12209680A JPS6026518B2 JP S6026518 B2 JPS6026518 B2 JP S6026518B2 JP 12209680 A JP12209680 A JP 12209680A JP 12209680 A JP12209680 A JP 12209680A JP S6026518 B2 JPS6026518 B2 JP S6026518B2
Authority
JP
Japan
Prior art keywords
resin
powder
adhesive sheet
base material
resin powder
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.)
Expired
Application number
JP12209680A
Other languages
Japanese (ja)
Other versions
JPS5747372A (en
Inventor
幸夫 西山
和彦 最上
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.)
Nitto Denko Corp
Original Assignee
Nitto Electric Industrial 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 Nitto Electric Industrial Co Ltd filed Critical Nitto Electric Industrial Co Ltd
Priority to JP12209680A priority Critical patent/JPS6026518B2/en
Publication of JPS5747372A publication Critical patent/JPS5747372A/en
Publication of JPS6026518B2 publication Critical patent/JPS6026518B2/en
Expired legal-status Critical Current

Links

Description

【発明の詳細な説明】 この発明は熱硬化性樹脂粉末を用いた接着性シートの製
造法に関し、主として絶縁用、固着保護材料用として、
とくに電機・電子材料などの精密接着材料として好適に
用いることができる打ち抜き加工性にすぐれた接着性シ
ートの製造法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an adhesive sheet using thermosetting resin powder, and is mainly used for insulation and adhesive protection materials.
In particular, the present invention relates to a method for manufacturing an adhesive sheet with excellent punching workability that can be suitably used as a precision adhesive material for electrical and electronic materials.

従釆、この種の接着性シートは合成樹脂を溶剤に溶かし
た後繊維基材に含浸させる所謂溶液塗工法で製造されて
いるが、この溶液塗工法は一般に溶媒に溶解し得る樹脂
しか使用できない制限があるうえ溶液粘度が高くなると
塗布工程になじみに〈いため樹脂濃度を高くできない、
無機質系等の充填剤を含ませた樹脂を塗布しようとする
と充填剤は溶液中で沈降して塗工できないという欠点が
ある。
Accordingly, this type of adhesive sheet is manufactured by a so-called solution coating method in which a synthetic resin is dissolved in a solvent and then impregnated into the fiber base material, but this solution coating method can generally only use resins that can be dissolved in the solvent. There are limitations, and if the solution viscosity increases, it will not adapt to the coating process, so it is not possible to increase the resin concentration.
When attempting to coat a resin containing an inorganic filler, etc., there is a drawback that the filler settles in the solution and cannot be coated.

従って通常は充填剤を使用しないかあるいはほとんど含
まない樹脂を溶媒に比較的低濃度溶解して基材に塗布す
る使用方法が多いが、このようにしても樹脂含浸量が多
い接着性シートを得ようとすると溶媒量が多いため樹脂
層形成中に溶媒の輝散に基づくボィド(空隙、以下同じ
)か生じたり、あるいは樹脂層形成後も未綾散溶媒が層
中に残存してシートの耐湿性が損われたりこの未綾散溶
媒が接着性シート使用時に葱散してボィドの原因となる
弊害がある。
Therefore, it is common to use a resin that does not use filler or contains almost no filler, and dissolves it in a solvent at a relatively low concentration and applies it to the base material, but even with this method, an adhesive sheet with a large amount of resin impregnation can be obtained. If you try to use a large amount of solvent, voids may occur due to the dispersion of the solvent during the formation of the resin layer, or undispersed solvent may remain in the layer even after the resin layer is formed, causing the sheet's moisture resistance to deteriorate. There are disadvantages in that the properties of the adhesive sheet may be impaired, and that the uncured dispersion solvent may scatter during use of the adhesive sheet, causing voids.

近年、このような欠点を持つ溶液塗工法に換りしかも衛
生上の観点から有機溶媒の輝散を伴わない接着性シート
の製造方法の要求に答え、樹脂粉末を溶媒を使用するこ
となくそのまま繊維基村上に配置してまず所定厚みの粉
末層を形成し、その後に加熱溶融して基材内部に含浸さ
せるといういわゆる粉末塗工法による接着性シートの製
造法が提案されている。
In recent years, in response to the demand for an adhesive sheet manufacturing method that does not involve the scattering of organic solvents in order to replace the solution coating method, which has such drawbacks, and from a sanitary perspective, resin powder can be directly applied to fibers without using solvents. A method of manufacturing an adhesive sheet using a so-called powder coating method has been proposed, in which a powder layer of a predetermined thickness is first formed by disposing the powder on a substrate, and then heated and melted to impregnate the inside of the substrate.

またこの方法において樹脂の含浸一体化時につまり加熱
溶融する際に外圧を加えるようにすると、外圧を加えな
い場合に較べて含浸性、シートの厚み精度、無気泡性と
なるなどの面で非常に好結果が得られることが知られて
いる。これらの粉末塗工法によれば従来の溶液塗工法に
みられた種々の欠点を解消できるから、工業的に有利に
実施できるものといえる。
In addition, in this method, if external pressure is applied when the resin is impregnated and integrated, that is, when it is heated and melted, the impregnation performance, sheet thickness accuracy, and bubble-free property are significantly improved compared to the case where no external pressure is applied. It is known to give good results. These powder coating methods can overcome the various drawbacks seen in conventional solution coating methods, and can therefore be said to be industrially advantageous.

ところが樹脂粉末としてとくに熱硬化性樹脂粉末を選定
使用したときには、シート自体の柔軟性に欠ける結果と
して、打ち抜き加工などの取扱い中に樹脂粉末が脱落す
るという問題があった。たとえばかかる方法で得た接着
性シートを所定形状の小片に打ち抜き切断したり、ある
いはテープ状にスリットしたりすると、切断付近の樹脂
がこばれ落ちて基材中に樹脂の欠落部を生じさせ、これ
によって接着不良が生じたり、また被着体の接着不要部
分にまで樹脂が飛散したときには彼着体を汚染する欠点
もあった。
However, when a thermosetting resin powder is selected and used as the resin powder, there is a problem in that the resin powder falls off during handling such as punching as a result of the sheet itself lacking in flexibility. For example, when an adhesive sheet obtained by such a method is punched and cut into small pieces of a predetermined shape or slit into a tape shape, the resin near the cut pieces breaks off and falls, creating a missing part of the resin in the base material. This has the disadvantage of causing poor adhesion and contaminating the adherend when the resin is scattered to parts of the adherend that do not require adhesion.

この発明者らは、上記の事情に照らして鋭意検討した結
果、基材上に熱硬化性樹脂粉末を塗工する前に上記基材
を特定の処理液でプラィマー処理すると前述の問題を解
消できることを知り、この発明を完成するに至ったもの
である。
As a result of intensive studies in light of the above circumstances, the inventors have found that the above-mentioned problem can be solved by treating the base material with a specific treatment liquid as a primer before coating the thermosetting resin powder on the base material. This led to the completion of this invention.

すなわちこの発明は熱硬化性樹脂を主体とした軟質樹脂
を含む処理液でプライマー処理された繊維基材上に、熱
硬化性樹脂粉末を塗工したのち、加熱溶融処理を施こす
ことからなり、上記軟質樹脂の繊維基材への付着量が熱
硬化性樹脂粉末塗工量との合計豊中2〜2の重量%の範
囲にあることを特徴とする打ち抜き加工性にすぐれた接
着性シートの製造法に係るものである。
That is, this invention consists of coating a thermosetting resin powder on a fiber base material that has been primed with a treatment liquid containing a soft resin mainly composed of a thermosetting resin, and then subjecting it to a heat melting treatment. Production of an adhesive sheet with excellent punching workability, characterized in that the amount of the soft resin adhered to the fiber base material is in the range of 2 to 2% by weight in total including the amount of coated thermosetting resin powder. It concerns the law.

このようにこの発明においては粉末塗工前に欧質樹脂を
含む処理液で繊維基材を処理したものであるから、上記
軟費樹脂が基材に一定量付着し、かかる状態で熱硬化性
樹脂粉末を塗工し加熱溶融すると、欧質樹脂と上記粉末
とが部分的に溶融一体化するために基材に対する粉末の
密着性が箸るしく向上する。
In this way, in this invention, the fiber base material is treated with a treatment liquid containing a European resin before powder coating, so a certain amount of the soft resin adheres to the base material, and in this state, it becomes thermosetting. When the resin powder is applied and heated and melted, the resin and the powder are partially melted and integrated, so that the adhesion of the powder to the substrate is significantly improved.

しかも軟質樹脂の存在によってシート全体を柔軟化でき
るから、かかる前処理を施こさない場合に較べて、打ち
抜き加工その他の取扱い中での樹脂の脱落が顕著に抑止
される。また上記前処理によると上述の如き打ち抜き加
工性が向上してくるだけでなく、樹脂粉末塗工時の樹脂
の脱落をも防ぐことができる。すなわち繊維基材として
密度の低いあるいは薄肉のものを適用した場合で上記前
処理を施こさないときには、粉末塗工時に樹脂粉末の一
部が基材からすり抜けることがある。しかるにこの発明
法による前処理を施こすとかかる樹脂粉末のすり抜けが
効果的に防がれて、一定量の樹脂粉末を繊維基材全体に
均一に塗工することができる。さらにこのようなすぐれ
た打ち抜き加工性および良好な粉末塗工性が得られる結
果として、接着性シート本来の接着強度の面で好結果を
得ることができ、また熱硬化性樹脂粉末としての耐熱強
度その他の特性を充分に活かすことができる。
Moreover, since the entire sheet can be made flexible by the presence of the soft resin, falling off of the resin during punching or other handling is significantly suppressed compared to a case where such pretreatment is not performed. Furthermore, the above pretreatment not only improves the punching workability as described above, but also prevents the resin from falling off during resin powder coating. That is, when a fiber base material with low density or thin wall is used and the above pretreatment is not performed, a part of the resin powder may slip through the base material during powder coating. However, by performing the pretreatment according to the method of the present invention, such slip-through of the resin powder can be effectively prevented, and a certain amount of the resin powder can be uniformly applied to the entire fiber base material. Furthermore, as a result of such excellent punching workability and good powder coating properties, good results can be obtained in terms of the adhesive strength of the adhesive sheet, and the heat resistance strength as a thermosetting resin powder can be obtained. Other characteristics can be fully utilized.

この発明において用いられる処理液は軟質樹脂をケトン
、アルコール、トリクレン、トルエンなどの各種有機溶
剤に適宜溶解してなるものであり、その粘度は基材前処
理温度(通常100℃以下)で100ポイズ以下とされ
たものが望ましい。かかる処理液を使用することによっ
て繊維基材全体を均一かつ良好に処理することができる
。上記縄質樹脂は熱硬化性樹脂粉末と較べて柔軟性を有
するもので、耐熱性などの観点から熱硬化性樹脂を主体
としたものの中から樹脂粉末の種類に応じて適宜選択す
ることができる。一般的には常温で流動状ないし半固形
状の熱硬化性樹脂やこれに一部熱可塑性樹脂を加えた混
合樹脂あるいはこれらに常温で固形の熱硬化性樹脂を混
合したものなども使用できる。かかる軟貿樹脂のなかで
もとくに望ましいものは、熱硬化性樹脂粉末と比較的良
好に相溶するものである。
The treatment liquid used in this invention is made by appropriately dissolving a soft resin in various organic solvents such as ketone, alcohol, trichlene, toluene, etc., and its viscosity is 100 poise at the substrate pretreatment temperature (usually 100°C or less). The following are desirable. By using such a treatment liquid, the entire fiber base material can be treated uniformly and favorably. The above-mentioned rope resin has more flexibility than thermosetting resin powder, and from the viewpoint of heat resistance etc., it can be appropriately selected from those mainly composed of thermosetting resin depending on the type of resin powder. . In general, thermosetting resins that are fluid or semi-solid at room temperature, mixed resins in which some thermoplastic resins are added, or mixtures of these with thermosetting resins that are solid at room temperature can also be used. Among such soft resins, particularly desirable ones are those that are relatively well compatible with the thermosetting resin powder.

相溶性が良好であると、粉末塗工後加熱溶融する際に、
軟質樹脂と粉末樹脂との融着一体化がおこりやすくなり
、絹果そして粉末樹脂の基村に対する密着性により好結
果がもたらされる。また上記相溶性以外の性質として常
温で粘着性を有するものが望ましい。この理由は明らか
で、粘着性を有することによって粉末塗工時および打ち
抜き加工時などの樹脂粉末のすり抜け、脱落を一層阻止
することができるからである。軟質樹脂の具体例として
は、ェポキシ樹脂、フェノール樹脂、ポリエステル樹脂
、ナイロン、ポリブチラール樹脂、ホルマール樹脂、ポ
リスルホン、フェノキシ樹脂、エチレン−酢酸ビニル共
重合体、液状ゴムおよびこれらの変性物などが挙げられ
る。なお、軟質樹脂として熱硬化性樹脂を主体としたも
のを使用するためこの樹脂の硬化剤を処理液中に含ませ
ることができるが、一般にはかかる硬化剤をあえて使用
しなくてもよい。この理由は熱硬化性樹脂粉末中に含ま
れる硬化剤が加熱溶融時に一部軟質樹脂側に移行し、こ
れによって上記軟質樹脂をも硬化できるからである。こ
の発明においては上述の如き欧質樹脂を含む処理液によ
り繊維基材をプラィマー処理するものであるが、基材へ
の軟質樹脂付着量は熱硬化性樹脂粉末塗工量との合計量
中通常2〜2の重量%の範囲となるようにするのがよい
If the compatibility is good, when heating and melting after powder coating,
The soft resin and the powder resin are easily fused and integrated, and good results are obtained due to the adhesion of the silk fruit and the powder resin to the base. In addition to the above-mentioned compatibility, it is desirable that the material has tackiness at room temperature. The reason for this is obvious: having adhesive properties can further prevent the resin powder from slipping through or falling off during powder coating and punching. Specific examples of soft resins include epoxy resin, phenol resin, polyester resin, nylon, polybutyral resin, formal resin, polysulfone, phenoxy resin, ethylene-vinyl acetate copolymer, liquid rubber, and modified products thereof. . Note that since a thermosetting resin is used as the soft resin, a curing agent for this resin can be included in the processing liquid, but generally such a curing agent need not be used. The reason for this is that the curing agent contained in the thermosetting resin powder partially migrates to the soft resin side during heating and melting, thereby making it possible to harden the soft resin as well. In this invention, the fiber base material is treated with a primer using a treatment liquid containing the above-mentioned European resin, but the amount of soft resin adhered to the base material is usually the same as the total amount of the thermosetting resin powder coated. Preferably, the amount is in the range of 2 to 2% by weight.

上記付着量が少なすぎるとこの発明の効果が得られず、
逆に多くなりすぎると熱硬化性樹脂粉末を使用すること
の意義が失なわれ、ボィドの発生を抑え耐湿性を改善す
るといった粉末塗工法の利点が損なわれるとともに、接
着強度、耐熱性などの面でも好結果が得られない。プラ
ィマー処理する繊維基村としては、天然有機系、合成有
機系または無機系の繊維からなる織布、不織布、マット
などがあり、これらは比較的簿肉でまた密度の低いもの
であっても接着性シートとして要求される機械的強度を
有するものであれば広く適用することができる。このよ
うな繊維基材をプライマ−処理したのち、通常は風乾し
、その後に熱硬化性樹脂粉末の塗工程に供される。
If the above-mentioned amount of adhesion is too small, the effect of this invention cannot be obtained,
On the other hand, if the amount is too high, the significance of using thermosetting resin powder will be lost, and the advantages of powder coating methods, such as suppressing void generation and improving moisture resistance, will be lost, and the adhesive strength, heat resistance, etc. I can't get good results either. Fiber materials that can be treated with a primer include woven fabrics, non-woven fabrics, and mats made of natural organic, synthetic organic, or inorganic fibers, and even if these are relatively thin and have low density, they can be bonded. It can be widely applied as long as it has the mechanical strength required as a flexible sheet. After such a fiber base material is treated with a primer, it is usually air-dried and then subjected to a coating process with thermosetting resin powder.

上記風乾によって処理液中の有機溶剤は揮散除去される
が、一部残存することがあっても粉末塗工後の加熱溶融
処理によって完全に除去される。場合によっては、風乾
しないで上記加熱溶融処理時にすべての有機溶剤を輝散
させることも可能である。粉末塗工に当たって用いられ
る熱硬化性樹脂粉末は、ェポキシ樹脂その他の熱硬化性
樹脂または一部熱可塑性樹脂を含むものに硬化剤および
必要に応じて無機質充填剤、各種添加剤、微竃の有機溶
媒を含ませてなる配合物を、通常300A以下、好まし
くは250〜50仏の範囲に粉砕してなるものである。
The organic solvent in the treatment liquid is volatilized and removed by the above-mentioned air drying, but even if some remains, it is completely removed by the heating and melting treatment after powder coating. In some cases, it is also possible to evaporate all the organic solvents during the heating and melting treatment without air drying. The thermosetting resin powder used for powder coating is one that contains epoxy resin, other thermosetting resin, or a part of thermoplastic resin, a hardening agent, and if necessary, an inorganic filler, various additives, and a small amount of organic It is obtained by pulverizing a blend containing a solvent to a particle size usually below 300 A, preferably in the range of 250 to 50 A.

粉末塗工手段としては、均一厚みの粉末層を形成できる
方法であれば広く適用できるが、一般には散布塗工法、
静電塗工法、スプレー塗工法、流動浸簿塗工法などが好
ましく採用される。
Powder coating methods can be widely applied as long as they can form a powder layer of uniform thickness, but generally, spray coating methods,
An electrostatic coating method, a spray coating method, a fluidized dip coating method, etc. are preferably employed.

この粉末塗工後、加熱溶融処理を施こしてこの発明の接
着性シートをつくる。
After this powder coating, heating and melting treatment is performed to produce the adhesive sheet of the present invention.

なおここで重要なことは熱硬化性樹脂粉末が硬化しない
温度条件が選定される必要がある。かかる処理により塗
工粉末と軟質樹脂とがその界面において一部融着一体化
し、粉末塗工の基材に対する密着性およびシート全体の
柔軟化が図られる。この効果をより大ならしめるために
、加熱溶融時に外圧を加えることが望ましい。外圧を加
える場合、プラィマー処理に係る軟質樹脂および塗工粉
末中の気泡、有機溶剤が押し出されやすくなる結果、得
られる接着性シートの無気泡化も促進されるし、また樹
脂の含浸性やシートの厚み精度などの面でも好結果が得
られる。外圧を加えて加熱溶融処理する方法において、
粉末塗工後−旦非加圧状態で加熱溶融し、その後加圧下
に再加熱溶融するという二段階処理をとることが実用上
望ましい。
What is important here is that temperature conditions must be selected so that the thermosetting resin powder does not harden. Through this treatment, the coating powder and the soft resin are partially fused and integrated at the interface, and the adhesion of the powder coating to the base material and the flexibility of the entire sheet are achieved. In order to enhance this effect, it is desirable to apply external pressure during heating and melting. When external pressure is applied, air bubbles and organic solvents in the soft resin and coating powder related to primer treatment are easily extruded, which promotes bubble-free formation of the resulting adhesive sheet, and also improves the impregnability of the resin and the sheet. Good results can also be obtained in terms of thickness accuracy. In the method of heating and melting by applying external pressure,
After powder coating, it is practically desirable to perform a two-step process of first heating and melting in a non-pressurized state and then reheating and melting under pressure.

前段の加熱溶融では塗工粉末をまず基材に充分に定着さ
せることが主目的となるが、後段の加熱溶融では前記こ
の発明の効果を最大限に発現させようとするものである
。上記加圧方法ではたとえば加熱ロールプレスまたは加
熱プレス板などを使用して、粉末塗工後の基村の上下面
両側に滋形フィルムを介在させ、両側から通常0.2〜
40k9/地,50〜200qo,12分以内、好まし
くは0.5〜5k9/仇,80〜180qo,5分以内
の条件下で加熱プレスすればよい。以下にこの発明の実
施例を記載してより具体的に説明する。
The main purpose of the first stage of heating and melting is to sufficiently fix the coating powder on the substrate, while the second stage of heating and melting aims to maximize the effects of the present invention. In the above pressing method, for example, a heated roll press or a heated press plate is used to interpose a Shigeru-shaped film on both the upper and lower surfaces of the powder-coated Motomura, and the pressure is usually 0.2 to 0.2 mm from both sides.
Heat pressing may be carried out under the conditions of 40k9/kg, 50-200qo, 12 minutes or less, preferably 0.5-5k9/kg, 80-180qo, 5 minutes or less. Examples of the present invention will be described below to explain it more specifically.

なお以下において部および%とあるはそれぞれ重量部お
よび重量%を意味するものとする。実施例 1 ヱポキシ樹脂(油化シェルェポキシ社製ェピコート#8
28)6庇部、フェノキシ樹脂(ユニオンカーバイト社
製PKHH)4$部をメチルエチルケトンに溶解させ、
樹脂分が15%、粘度(25℃)10〜20ボィズのプ
ライマーAを作成した。
Note that in the following, parts and % mean parts by weight and % by weight, respectively. Example 1 Epoxy resin (Epicote #8 manufactured by Yuka Shell Epoxy Co., Ltd.
28) Dissolve 6 parts and 4 parts of phenoxy resin (PKHH manufactured by Union Carbide Co., Ltd.) in methyl ethyl ketone,
Primer A was prepared with a resin content of 15% and a viscosity (25° C.) of 10 to 20 voids.

次にヱポキシ樹脂(油化シェルェポキシ社製ェピコート
#1002)10疎部、2ーウンデシルイミダゾール(
四国化成社製)1部およびカーボンブラック(三菱化成
社製)3部からなる配合物を、looこCで1ぴ合間ロ
ール混練した後ハンマーミルで粉砕して平均粒子径が8
0〜200仏の樹脂粉末を作成した。
Next, 10 sparse parts of an epoxy resin (Epicote #1002 manufactured by Yuka Shell Epoxy Co., Ltd.), 2-undecyl imidazole (
A mixture consisting of 1 part (manufactured by Shikoku Kasei Co., Ltd.) and 3 parts of carbon black (manufactured by Mitsubishi Kasei Co., Ltd.) was roll-kneaded for 1 time in a looocoC and then ground in a hammer mill to give an average particle size of 8.
Resin powders of 0 to 200 degrees were created.

この粉末のゲル化時間は150ooで2分30秒であっ
た。ついで、前記プラィマーAをガラスクロス(旭シュ
ェーベル社製商品名216−AS3雌;110夕/め、
縦6止本、横斑本/ィンチ)上に含浸塗布し、風乾によ
り有機溶剤を除去した。
The gelation time of this powder was 2 minutes and 30 seconds at 150oo. Next, the primer A was coated with glass cloth (trade name 216-AS3 female, manufactured by Asahi Schwebel Co., Ltd.; 110 days/day,
The film was impregnated and coated on a vertical 6-piece, horizontally mottled book/inch, and the organic solvent was removed by air-drying.

プライマー塗布量は樹脂分として7夕/めであった。そ
の後このプラィマー処理したガラスクロス上に前記の樹
脂粉末をスリット付きグラビアロールによって樹脂粉末
量が100夕/〆となるように塗工し、12ぴ○で2分
間加熱処理して定着させた。この処理にてプラィマー中
の有機溶剤は完全に樽散除去された。しかる後ガラスク
ロス基材の両面にシリコーン樹脂で処理したポリエステ
ル離型フィルム(厚み50r)を配置し、樹脂粉末の塗
工面側からロールプレスによって120qo,3k9/
洲,0.5凧/分の条件で加圧加熱処理してこの発明の
接着性シートをつくった。実施例 2 ヱピコート#828(前世)70部、ェピコート#10
02(前出)3庇部をメチルエチルケトンーメタノール
混合溶媒に溶解させ樹脂分として20%濃度、粘度(2
デ○)7〜15ポイズのブライマーBを作成した。
The amount of primer applied was 7 days/month based on the resin content. Thereafter, the resin powder was coated onto the primer-treated glass cloth using a gravure roll with slits so that the amount of resin powder was 100 mm per coat, and was fixed by heat treatment at 12 mm for 2 minutes. In this treatment, the organic solvent in the primer was completely removed. After that, a polyester release film (thickness 50r) treated with silicone resin was placed on both sides of the glass cloth base material, and 120qo, 3k9/
The adhesive sheet of the present invention was prepared by pressure and heat treatment at a rate of 0.5 kites/min. Example 2 Epicoat #828 (previous life) 70 copies, Epicoat #10
02 (mentioned above) 3 eaves part was dissolved in a mixed solvent of methyl ethyl ketone and methanol to give a resin content of 20% concentration and viscosity (2
○) Brimer B of 7 to 15 poise was prepared.

次にェポキシ樹脂(油化シェルェポキシ社製ェピコート
#1004)40部、ヱピコート#1002(前出)6
$部、フェノール樹脂(群栄化学社製商品名M円12庇
m)10部および2ーメチルィミダゾール0.5部から
なる配合物を、10ぴ0で10分間ロール混糠した後ハ
ンマーミルで粉砕して平均粒子径が80〜200仏の樹
脂粉末をつくった。
Next, 40 parts of epoxy resin (Epicoat #1004 manufactured by Yuka Shell Epoxy Co., Ltd.), 6 parts of Epicoat #1002 (mentioned above)
A mixture consisting of 10 parts of phenol resin (product name: M yen 12 eaves, manufactured by Gunei Kagaku Co., Ltd.) and 0.5 parts of 2-methylimidazole was roll-blended for 10 minutes at 10 mm and then hammered. A resin powder having an average particle size of 80 to 200 particles was prepared by pulverizing with a mill.

この粉末のゲル化時間は150qoで3分であった。次
にガラスクロス(旭シュェーベル社製商品名108−A
S81:49タノ〆、縦60本、横47本/インチ)上
に前記プラィマーBを含浸塗布し、風乾により有機溶剤
を除去した。
The gelation time of this powder was 3 minutes at 150 qo. Next, glass cloth (product name 108-A manufactured by Asahi Schwebel Co., Ltd.)
S81: The primer B was impregnated and coated on a 49-thick film (60 vertical lines, 47 horizontal lines/inch), and the organic solvent was removed by air drying.

プラィマー塗布量は樹脂分として6夕/めであった。そ
の後このプライマー処理したガラスクロス上に前記の樹
脂粉末をスリット付きグラビアロールにて樹脂粉末量が
60夕/めとなるように塗工し、120℃で5分間加熱
処理して基材に樹脂を含浸させこの発明の接着性シート
を作成した。なお上記の加熱処理によりブラィマー中の
有機溶剤は完全に揮散除去された。実施例 3ェピコー
ト#828(前世)をプタジェンアクリロニトリル共重
合ゴム(グッドリッチ社製/・ィカーCTBN1300
×8)で変性したゴム変性ェポキシ樹脂(ゴム含有率1
0%)65部、ェピコート#1002(前出)35部を
アセトンにて溶解させ、樹脂分が15%濃度、粘度(2
ず0)10〜18ポィズとなるようにプラィマーCを作
成した。
The amount of primer applied was 6 days/day based on the resin content. Thereafter, the resin powder was applied onto the primer-treated glass cloth using a gravure roll with slits so that the amount of resin powder was 60 mm/day, and heat-treated at 120°C for 5 minutes to coat the base material with the resin. The adhesive sheet of this invention was prepared by impregnation. Note that the organic solvent in the brimer was completely volatilized and removed by the above heat treatment. Example 3 Epiquat #828 (previous generation) was mixed with Ptagene acrylonitrile copolymer rubber (manufactured by Goodrich Co., Ltd. / Aker CTBN1300)
×8) rubber-modified epoxy resin (rubber content: 1
0%) and 35 parts of Epicort #1002 (mentioned above) were dissolved in acetone to give a resin concentration of 15% and a viscosity of (2
0) Primer C was prepared so as to have 10 to 18 poise.

次にェピコート#1002(前出)10$部、2−ゥン
デシルイミダゾール0.5部、三水和アルミナ50部か
らなる配合物を、10000で10分間ロール混練した
後ハンマーミルで粉砕して平均粒子径が80〜200r
の樹脂粉末をつくった。
Next, a mixture consisting of 10 parts of Epiquat #1002 (mentioned above), 0.5 parts of 2-undecylimidazole, and 50 parts of trihydrated alumina was roll-kneaded at 10,000 for 10 minutes, and then ground in a hammer mill. Average particle size is 80~200r
resin powder was made.

この粉末のゲル化時間は150qoで3分2鼠砂であっ
た。ついでガラスクロス(実施例1に記載のものと同じ
)上に前記ブラィマーCを含浸塗布し、風乾により有機
溶剤を除去した。
The gelation time of this powder was 3 minutes and 2 minutes at 150 qo. Then, the Braimer C was impregnated onto a glass cloth (same as described in Example 1), and the organic solvent was removed by air drying.

プラィマー塗布量は樹脂分として7夕/めであった。そ
の後このプライマー処理したガラスクロス上に前記の樹
脂粉末をスリット付きグラビアロールによって樹脂粉末
量が110夕/あとなるように塗工し、120qoで2
分間加熱処理して基村にに定着させた。以下実施例1と
同様の手段でロールプレスによって120qo,3kg
/の,0.5凧/分の条件で加圧処理してこの発明の接
着性シートをつくった。比較例 1 ガラスクロス(実施例1に記載のものと同じ)上に、プ
ライマー処理を施こすことなく、実施例1に記載の樹脂
粉末を110夕/め(樹脂含有量50%)となるように
スリット付きグラビアロールによって直接塗工し、これ
を12ぴ○で2分間加熱処理した後、実施例1と同方法
でロールプレスにより、120qC,3kg/の,0.
5肌/分の条件で加圧加熱処理して接着性シートを作成
した。
The amount of primer applied was 7 days/day based on the resin content. Thereafter, the resin powder was coated on this primer-treated glass cloth using a gravure roll with slits so that the amount of resin powder was 110 kg/cm,
It was heat-treated for a minute to fix it in Motomura. Hereinafter, 120 qo, 3 kg was prepared using a roll press in the same manner as in Example 1.
The adhesive sheet of the present invention was produced by pressure treatment under the conditions of 0.5 kite/min. Comparative Example 1 A glass cloth (same as described in Example 1) was coated with the resin powder described in Example 1 at 110 m/m (resin content 50%) without primer treatment. The film was coated directly with a gravure roll with slits, heated at 12 mm for 2 minutes, and then coated with a roll press in the same manner as in Example 1 at 120 qC, 3 kg/0.
An adhesive sheet was prepared by pressure and heat treatment at a rate of 5 skins/min.

比較例 2 ガラスクロス(実施例1に記載のものと同じ)上に、プ
ラィマー処理を施こすことなく、実施例2に記載の樹脂
粉末を120夕/で(樹脂含有率52%)となるように
スリット付グラビアロールにて直接塗工し、これを12
0qoで5分間加熱処理して接着性シートを作成した。
Comparative Example 2 The resin powder described in Example 2 was applied to a glass cloth (same as that described in Example 1) at 120 μg/min (resin content 52%) without applying a primer treatment. directly coated with a gravure roll with slits, and then coated with 12
An adhesive sheet was prepared by heat treatment at 0qo for 5 minutes.

比較例 3ガラスクロス(実施例2に記載のものと同じ
)上に、プラィマー処理を施こすことなく、実施例2に
記載の樹脂粉末を樹脂量が6M/で(樹脂含有率55%
)となるようにスリット付グラビアロールによって直接
塗工し、これを120℃で5分間加熱処理して接着性シ
ートを作成しようとしたが樹脂粉末が基村からすり抜け
樹脂をほとんど載暦できなかった。
Comparative Example 3 A glass cloth (same as described in Example 2) was coated with the resin powder described in Example 2 at a resin amount of 6M/(resin content 55%) without primer treatment.
) was applied directly using a gravure roll with slits, and an attempt was made to create an adhesive sheet by heat-treating this at 120°C for 5 minutes, but the resin powder slipped through the base layer and almost no resin could be applied. .

以上の実施例1〜3および比較例1〜3で得られた6種
の接着性シートの打抜き加工性、樹脂粉末の塗工状況、
被看体との接着性を調べた結果は後記の表に示されると
おりであった。
The punching processability of the six types of adhesive sheets obtained in Examples 1 to 3 and Comparative Examples 1 to 3, the coating status of resin powder,
The results of examining the adhesion to the subject are shown in the table below.

なお評価方法は次のような試験法にて行なった。<打抜
き加工性> 接着性シートをトムソン方式でIQ松平方に打ち抜き切
断したとき、樹脂の脱落が見られるかどうかを肉眼で観
察し、脱落がない場合を(◎)、脱落がわずかに見られ
るが使用上問題がない場合を(0)、やや脱落が見られ
使用上問題となる場合を(△)、脱落が著しい場合を(
×)と評価した。
The evaluation method was as follows. <Punching workability> When the adhesive sheet is punched and cut into IQ pine squares using the Thomson method, it is observed with the naked eye whether or not the resin falls off. (0) indicates that there is no problem in use, (△) indicates that there is some falling off and poses a problem in use, and (△) indicates that there is a significant amount of falling off.
×).

<樹脂粉末の塗工状況>樹脂粉末を基材に載遣した時、
樹脂のすり抜けがない場合を(0)、ややすり抜けが見
られる場合を(△)、すり抜けが著しい場合を(×)と
した。
<Resin powder coating status> When the resin powder is placed on the base material,
The case where the resin did not slip through was rated as (0), the case where some resin slipped through was observed (△), and the case where the resin slipped through significantly was rated as (×).

<接着性> JISK6850に準じて接着性シート試験片(被着体
は圧延鋼板)を作成した。
<Adhesiveness> An adhesive sheet test piece (adherent was a rolled steel plate) was prepared according to JIS K6850.

硬化条件は150℃×6世分である。その試験片の引張
敷断強度をィンストロン型引張試験機UTM−1−50
0肥(東洋ボールドウィン社製)にて測定した。上表か
ら明らかなようにこの発明の接着性シートによれば良好
な打抜き加工性を示し、又樹脂粉末の塗工状況において
も樹脂が基村からすり抜けることなく一定量の樹脂が均
一に塗工でき、しかも基材と樹脂との密着性向上による
接着強度の向上が認められた。
The curing conditions were 150°C x 6 generations. The tensile breaking strength of the test piece was measured using an Instron type tensile tester UTM-1-50.
0 fertilizer (manufactured by Toyo Baldwin). As is clear from the above table, the adhesive sheet of the present invention exhibits good punching workability, and even when resin powder is applied, a certain amount of resin is uniformly coated without the resin slipping through the base layer. Furthermore, an improvement in adhesive strength was observed due to improved adhesion between the base material and the resin.

Claims (1)

【特許請求の範囲】 1 熱硬化性樹脂を主体とした軟質樹脂を含む処理液で
プライマー処理された繊維基材上に、熱硬化性樹脂粉末
を塗工したのち、加熱溶融処理を施こすことからなり、
上記軟質樹脂の繊維基材への付着量が熱硬化性樹脂粉末
塗工量との合計量中2〜20重量%の範囲にあることを
特徴とする打ち抜き加工性にすぐれた接着性シートの製
造法。 2 処理液中の軟質樹脂が熱硬化性樹脂粉末と相溶する
ものである特許請求の範囲第1項記載の打ち抜き加工性
にすぐれた接着性シートの製造法。 3 処理液中の軟質樹脂が常温で粘着性を示すものであ
る特許請求の範囲第1項または第2項記載の打ち抜き加
工性にすぐれた接着性シートの製造法。
[Scope of Claims] 1. A thermosetting resin powder is applied onto a fiber base material that has been primed with a treatment liquid containing a soft resin mainly composed of a thermosetting resin, and then heated and melted. Consisting of
Production of an adhesive sheet with excellent punching workability, characterized in that the amount of the soft resin adhered to the fiber base material is in the range of 2 to 20% by weight based on the total amount of the applied amount of the thermosetting resin powder. Law. 2. The method for producing an adhesive sheet with excellent punching workability according to claim 1, wherein the soft resin in the treatment liquid is compatible with the thermosetting resin powder. 3. The method for producing an adhesive sheet with excellent punching workability according to claim 1 or 2, wherein the soft resin in the treatment liquid exhibits adhesiveness at room temperature.
JP12209680A 1980-09-02 1980-09-02 Manufacturing method of adhesive sheet Expired JPS6026518B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12209680A JPS6026518B2 (en) 1980-09-02 1980-09-02 Manufacturing method of adhesive sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12209680A JPS6026518B2 (en) 1980-09-02 1980-09-02 Manufacturing method of adhesive sheet

Publications (2)

Publication Number Publication Date
JPS5747372A JPS5747372A (en) 1982-03-18
JPS6026518B2 true JPS6026518B2 (en) 1985-06-24

Family

ID=14827546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12209680A Expired JPS6026518B2 (en) 1980-09-02 1980-09-02 Manufacturing method of adhesive sheet

Country Status (1)

Country Link
JP (1) JPS6026518B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI565844B (en) * 2011-07-29 2017-01-11 東邦特耐克絲歐洲股份有限公司 Flexible reinforcing fiber yarn pre-impregnated with resin

Also Published As

Publication number Publication date
JPS5747372A (en) 1982-03-18

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