JPS6150514B2 - - Google Patents
Info
- Publication number
- JPS6150514B2 JPS6150514B2 JP9189281A JP9189281A JPS6150514B2 JP S6150514 B2 JPS6150514 B2 JP S6150514B2 JP 9189281 A JP9189281 A JP 9189281A JP 9189281 A JP9189281 A JP 9189281A JP S6150514 B2 JPS6150514 B2 JP S6150514B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- surface treatment
- adhesive sheet
- treatment layer
- adhesion
- 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
Links
Landscapes
- Adhesive Tapes (AREA)
Description
【発明の詳細な説明】
この発明は金属、繊維、木材、陶磁器、ガラ
ス、プラスチツクなどへの接着力を改善した表面
処理層つき接着シートに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adhesive sheet with a surface treatment layer that has improved adhesion to metals, fibers, wood, ceramics, glass, plastics, etc.
従来、接着シートとしてホツトメルト型接着シ
ート、熱硬化型接着シートなど数多く知られてい
るが、金属などに対する接着強度の面でなお満足
できるものとはいえなかつた。たとえば、熱硬化
型接着シートは、ホツトメルト型接着シートに較
べると耐熱性、耐溶剤性、接着力にすぐれ、構造
用接着剤として広く利用されているが、かかる接
着シートでも高度の接着強度とその安定化を図る
ためには被着体を予め充分に表面処理する必要が
あつた。ところが、このような表面処理は非常に
手間がかかるばかりでなく、表面処理剤中の有機
溶剤の残存や表面処理むらの発生により接着力の
向上を望みえなかつたり安定した接着力が得られ
ないといつた問題があつた。 Many adhesive sheets, such as hot-melt adhesive sheets and thermosetting adhesive sheets, have been known in the past, but these have not yet been satisfactory in terms of adhesive strength to metals and the like. For example, thermosetting adhesive sheets have superior heat resistance, solvent resistance, and adhesive strength compared to hot melt adhesive sheets, and are widely used as structural adhesives. In order to achieve stabilization, it was necessary to sufficiently surface-treat the adherend in advance. However, this type of surface treatment is not only very time-consuming, but also makes it impossible to improve the adhesive strength or to obtain stable adhesive strength due to residual organic solvents in the surface treatment agent and uneven surface treatment. I had a problem.
この発明は、このような問題に対処して、被着
体の表面処理をあえて行なわなくともあるいはそ
れほど厳密に行なわなくとも、金属その他の被着
体に対して充分な接着力を得ることができる新規
かつ有用な接着シートを提供しようとするもの
で、その要旨とするところは、片面もしくは両面
にカルボキシル基含有の塩化ビニル―酢酸ビニル
共重合体を主体とした表面処理層を有する接着シ
ートにある。 The present invention addresses these problems and makes it possible to obtain sufficient adhesion to metals and other adherends without having to carry out any surface treatment on the adherend, or without carrying out the surface treatment very strictly. The aim is to provide a new and useful adhesive sheet, the gist of which is an adhesive sheet that has a surface treatment layer mainly composed of carboxyl group-containing vinyl chloride-vinyl acetate copolymer on one or both sides. .
すなわち、この発明者らは、従来公知の各種接
着シートの片面もしくは両面にカルボキシル基含
有の塩化ビニル―酢酸ビニル共重合体を主体とす
る表面処理層を形成したときには、これを形成し
ないものに較べて金属などの被着体に対する接着
力が大巾に向上し、被着体の表面処理を厳密にあ
るいは全く行なわなくとも、改善されたしかも安
定した接着強度が得られることを見い出したもの
である。 In other words, the inventors found that when a surface treatment layer mainly composed of a carboxyl group-containing vinyl chloride-vinyl acetate copolymer was formed on one or both sides of various conventionally known adhesive sheets, compared to sheets without this formation. It was discovered that the adhesion strength to adherends such as metals can be greatly improved by using adhesives, and that improved and stable adhesive strength can be obtained even without strict or no surface treatment of the adherends. .
この理由については必らずしも明らかではない
が、共重合体中に含まれるカルボキシル基の極性
効果により、また加熱接着に当たつて上記カルボ
キシル基が被着体とくに金属と直接反応して化学
的結合力を生じることにより、従来に較べて大き
くかつ安定した接着強度が得られるに至つたもの
と思われる。 The reason for this is not necessarily clear, but it may be due to the polar effect of the carboxyl groups contained in the copolymer, or due to the chemical reaction of the carboxyl groups directly with the adherend, especially metals, during heat bonding. It is thought that by generating a bonding force, a greater and more stable adhesive strength than before was achieved.
この発明において用いられるカルボキシル基含
有の塩化ビニル―酢酸ビニル共重合体は、これに
含まれるカルボキシル基が多いほど好結果が得ら
れるが、市販品の一般的含有量である0.5〜2.0重
量％程度でも充分な効果を期待できる。塩化ビニ
ルと酢酸ビニルとの共重合割合はとくに限定され
ないが、一般には酢酸ビニル含量で２〜30重量％
で平均重合度400〜1600程度であればよい。 The more carboxyl groups contained in the carboxyl group-containing vinyl chloride-vinyl acetate copolymer used in this invention, the better the results obtained, but the content is about 0.5 to 2.0% by weight, which is the general content of commercially available products. However, you can expect good results. The copolymerization ratio of vinyl chloride and vinyl acetate is not particularly limited, but generally the vinyl acetate content is 2 to 30% by weight.
The average degree of polymerization may be about 400 to 1,600.
このような共重合体を主体とした表面処理層を
形成するには、一般に、接着シート本体の片面も
しくは両面に、刷毛塗りや浸漬法などにより、上
述の共重合体と要すれば充填剤、顔料などの各種
添加剤を含ませた有機溶液を含浸塗布し、所定温
度で加熱乾燥すればよい。 To form a surface treatment layer mainly composed of such a copolymer, the above-mentioned copolymer and, if necessary, a filler, are generally applied to one or both sides of the adhesive sheet body by brush coating or dipping. An organic solution containing various additives such as pigments may be impregnated and coated, followed by heating and drying at a predetermined temperature.
このときの含浸付着量は、接着シート本体の種
類や被着体の種類などによつて多少相違するが、
一般的には接着シート本体に対し１〜50ｇ／m2程
度、好適には５〜30ｇ／m2とするのがよい。付着
量が少なければこの発明の効果が得られず、逆に
多くなりすぎると接着使用時に表面処理層からの
接着破壊をおこす結果となり接着強度がむしろ低
下してしまうおそれがある。 The amount of impregnation deposited at this time varies somewhat depending on the type of adhesive sheet body and the type of adherend, but
Generally, the amount is preferably about 1 to 50 g/m 2 , preferably 5 to 30 g/m 2 relative to the adhesive sheet body. If the amount of adhesion is too small, the effects of the present invention cannot be obtained, whereas if the amount is too large, the adhesion from the surface treatment layer may break during use of the adhesive, which may actually reduce the adhesive strength.
表面処理層を形成するべき接着シート本体は、
ホツトメルト型接着シート、熱硬化型接着シート
など従来公知のものを広く適用できる。ホツトメ
ルト型接着シートに用いられる熱可塑性ポリマー
には、たとえば飽和ポリエステル樹脂、ポリアミ
ド樹脂、セルロース系樹脂、ポリアセタール樹脂
などこれ単独でホツトメルト性を示すもののほ
か、一般に粘着附与剤、可塑剤などと併用される
ことが多いニトリルゴムの如き各種ゴム質ポリマ
ー、エチレン―酢酸ビニル共重合体など各種のポ
リマーが含まれる。これらのポリマーは必要に応
じて２種以上を混合したものであつてもよい。熱
硬化型接着シートに用いられる熱硬化性ポリマー
としては、たとえばエポキシ樹脂、不飽和ポリエ
ステル樹脂、フエノール樹脂、ジアリルフタレー
ト樹脂、シリコーン樹脂などが挙げられる。 The adhesive sheet body on which the surface treatment layer is to be formed is
Conventionally known adhesive sheets such as hot melt adhesive sheets and thermosetting adhesive sheets can be widely used. Thermoplastic polymers used in hot-melt adhesive sheets include those that exhibit hot-melt properties by themselves, such as saturated polyester resins, polyamide resins, cellulose resins, and polyacetal resins, as well as those that exhibit hot-melt properties on their own, as well as those that are generally used in combination with adhesion agents, plasticizers, etc. These include various rubbery polymers such as nitrile rubber, which is often used in rubber, and various polymers such as ethylene-vinyl acetate copolymers. These polymers may be a mixture of two or more types, if necessary. Examples of the thermosetting polymer used in the thermosetting adhesive sheet include epoxy resin, unsaturated polyester resin, phenol resin, diallyl phthalate resin, and silicone resin.
これら接着シート本体を構成する成分のなかに
は、充填剤、顔料、酸化防止剤、老化防止剤など
従来公知の各種添加剤が含まれるものであること
はいうまでもない。また、このような接着シート
本体は、接着剤組成物を単独でシート成形したも
ののほか、ガラス繊維その他の繊維基材や紙、プ
ラスチフイルムなどのシート基材上に接着剤組成
物を含浸ないし塗着してなるものなど任意の形態
であつてよい。 It goes without saying that the components constituting the adhesive sheet body include various conventionally known additives such as fillers, pigments, antioxidants, and anti-aging agents. In addition, such adhesive sheet bodies can be made by forming an adhesive composition into a sheet alone, or by impregnating or coating the adhesive composition on a sheet base material such as glass fiber or other fiber base material, paper, or plastifilm. It may be in any form, such as a piece of clothing.
以上詳述したとおり、この発明によれば、特定
の表面処理層を設けたことによつて、接着強度の
向上とその安定化を図ることができるから、金属
や繊維、木材、陶磁器、ガラス、プラスチツクな
どの各種被着体に対して信頼性の高い、また作業
性良好な接着シートを提供できる。 As detailed above, according to the present invention, by providing a specific surface treatment layer, it is possible to improve and stabilize the adhesive strength. It is possible to provide adhesive sheets with high reliability and good workability for various adherends such as plastics.
つぎに、この発明の実施例を記載してより具体
的に説明する。 Next, examples of the present invention will be described in more detail.
実施例
ガラスペーパ（日本バイリーン社製商品名EP
―4025）に、飽和ポリエステル樹脂（東洋紡績社
製商品名バイロン30S）の30重量％有機溶剤（ト
リオール：メチルエチルケトン＝８：２）溶液に
その固形分100重量部に対して内部架橋剤として
多官能性イソシアネート化合物（日本ポリウレタ
ン社製商品名コロネートＬ）の75重量％酢酸エチ
ル溶液を固形分比で１重量部配合してなる接着剤
溶液を、浸漬法により含浸塗工し、そのご90℃で
20分間加熱乾燥して、樹脂付着量150ｇ／m2の接
着シート本体を作製した。Example: Glass paper (product name: EP manufactured by Nippon Vilene Co., Ltd.)
-4025), a 30% by weight organic solvent (triol: methyl ethyl ketone = 8:2) solution of a saturated polyester resin (trade name: Vylon 30S, manufactured by Toyobo Co., Ltd.) was added as an internal crosslinking agent to 100 parts by weight of the solid content. An adhesive solution containing 1 part by weight of a 75% by weight ethyl acetate solution of a polyisocyanate compound (product name: Coronate L, manufactured by Nippon Polyurethane Co., Ltd.) was impregnated and coated by a dipping method, and then heated at 90°C.
The adhesive sheet was dried by heating for 20 minutes to produce an adhesive sheet body with a resin adhesion amount of 150 g/m 2 .
つぎに、この接着シート本体に、塩化ビニル86
重量％と酢酸ビニル13重量％と無水マレイン酸１
重量％とからなる共重合体（米国U.C.C社製商品
名Vinylite―VMCH；カルボキシル基含有率0.7〜
0.8重量％）をメチルエチルケトン―トルエン
１：１混合溶剤に溶解してなる4.5重量％溶液
を、浸漬法により含浸塗工し、90℃で20分間加熱
乾燥して接着シート本体の両面に表面処理層を形
成した。この表面処理層の付着量は15ｇ／m2で、
これと前記接着剤との合計量は基材に対して165
ｇ／m2であつた。 Next, apply vinyl chloride 86 to the adhesive sheet body.
wt% and vinyl acetate 13wt% and maleic anhydride 1
Copolymer consisting of % by weight (trade name: Vinylite-VMCH, manufactured by UCC, USA; carboxyl group content: 0.7~
A 4.5% by weight solution prepared by dissolving 0.8% by weight) in a 1:1 mixed solvent of methyl ethyl ketone and toluene was impregnated and coated using a dipping method, and dried by heating at 90°C for 20 minutes to form a surface treatment layer on both sides of the adhesive sheet body. was formed. The amount of adhesion of this surface treatment layer is 15g/ m2 ,
The total amount of this and the adhesive is 165% of the base material.
g/ m2 .
このようにして得られたこの発明の接着シート
を、1.6mm厚の鋼板とステンレス板（SUS304）と
の間にはさみ込み、電熱プレスにより、140℃、
１Kg／cm2、５分の条件で加熱加圧して接着させ
た。室温に冷却ご、幅25mm、長さ150mmに切断
し、テンシロン試験機にて剥離速度300mm／分で
Ｔ剥離接着力を調べたところ、14〜18Kg／25mm幅
と非常に大きな接着強度を有していた。 The thus obtained adhesive sheet of the present invention was sandwiched between a 1.6 mm thick steel plate and a stainless steel plate (SUS304), and heated at 140°C using an electric heat press.
The adhesive was bonded by heating and pressing at 1 kg/cm 2 for 5 minutes. After cooling to room temperature, it was cut into pieces of 25 mm wide and 150 mm long, and the T-peel adhesive strength was examined using a Tensilon tester at a peeling speed of 300 mm/min. The adhesive strength was extremely high at 14 to 18 kg/25 mm width. was.
比較例
実施例に記載の接着シート本体で、樹脂付着量
を165ｇ／m2としたもの、つまり表面処理層を形
成しなかつたものにつき、実施例と同様の接着試
験（接着条件その他はすべて実施例と同じ）を行
なつたところ、Ｔ剥離接着力が５〜７Kg／25mm幅
となり、接着強度を充分に満足させることができ
なかつた。Comparative Example Adhesion tests were conducted in the same manner as in the example (all other adhesive conditions were When the same procedure as in Example) was carried out, the T-peel adhesive strength was 5 to 7 kg/25 mm width, and the adhesive strength could not be sufficiently satisfied.
Claims (1)
化ビニル―酢酸ビニル共重合体を主体とする表面
処理層を有することを特徴とする表面処理層つき
接着シート。1. An adhesive sheet with a surface treatment layer, characterized in that it has a surface treatment layer mainly composed of carboxyl group-containing vinyl chloride-vinyl acetate copolymer on one or both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9189281A JPS57207668A (en) | 1981-06-15 | 1981-06-15 | Adhesive sheet having treated surface layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9189281A JPS57207668A (en) | 1981-06-15 | 1981-06-15 | Adhesive sheet having treated surface layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57207668A JPS57207668A (en) | 1982-12-20 |
| JPS6150514B2 true JPS6150514B2 (en) | 1986-11-05 |
Family
ID=14039204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9189281A Granted JPS57207668A (en) | 1981-06-15 | 1981-06-15 | Adhesive sheet having treated surface layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57207668A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01167148U (en) * | 1988-04-28 | 1989-11-24 |
-
1981
- 1981-06-15 JP JP9189281A patent/JPS57207668A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01167148U (en) * | 1988-04-28 | 1989-11-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57207668A (en) | 1982-12-20 |
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