JPH02201815A - Flat cable - Google Patents

Flat cable

Info

Publication number
JPH02201815A
JPH02201815A JP2046389A JP2046389A JPH02201815A JP H02201815 A JPH02201815 A JP H02201815A JP 2046389 A JP2046389 A JP 2046389A JP 2046389 A JP2046389 A JP 2046389A JP H02201815 A JPH02201815 A JP H02201815A
Authority
JP
Japan
Prior art keywords
adhesive layer
thermosetting adhesive
layer
conductive layers
thermoplastic adhesive
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
Application number
JP2046389A
Other languages
Japanese (ja)
Other versions
JPH07120492B2 (en
Inventor
Masanao Watanabe
正直 渡辺
Tomohiro Okada
岡田 知弘
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.)
Dexerials Corp
Original Assignee
Sony Chemicals Corp
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 Sony Chemicals Corp filed Critical Sony Chemicals Corp
Priority to JP2046389A priority Critical patent/JPH07120492B2/en
Publication of JPH02201815A publication Critical patent/JPH02201815A/en
Publication of JPH07120492B2 publication Critical patent/JPH07120492B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/0393Flexible materials
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/22Secondary treatment of printed circuits
    • H05K3/28Applying non-metallic protective coatings
    • H05K3/281Applying non-metallic protective coatings by means of a preformed insulating foil
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/38Improvement of the adhesion between the insulating substrate and the metal
    • H05K3/386Improvement of the adhesion between the insulating substrate and the metal by the use of an organic polymeric bonding layer, e.g. adhesive

Landscapes

  • Insulated Conductors (AREA)

Abstract

PURPOSE:To secure the film thickness of a thermosetting adhesive layer on each of conductive layers so as to have the excellent insulating property of the cable and also prevent the unevenness of the external appearance by forming a thermosetting adhesive agent layer on each of the faces opposite paired insulating films having the conductive layers put therebetween. CONSTITUTION:As adhesive for the cable, two kinds of a thermosetting adhesive 1 and a thermoplastic adhesive 2, both of which have different properties, are used for being applied respectively onto each of insulating films 3 in the order of the thermosetting adhesive 1 and the thermoplastic adhesive 2 so that a laminated body consisting of the thermosetting adhesive layer and the thermoplastic adhesive layer is formed. When these insulating films are used for putting each of conductive layers 4, 4 therebetween to be brought in pressure contact while pressurizing each of the conductive layers by means of hot-press or hot-rolling, the thermoplastic adhesive layer starts to metal with its softening and melting, whereas the thermosetting adhesive layer remains on each of the conductive layers with about the same film thickness as had without starting to melt. Accordingly, the adhesion relative to each of conductive layer portions is secured, while the insulating property thereof also is improved. Furthermore, no unevenness can be seen on the external appearance of the cable.

Description

【発明の詳細な説明】 〔産業上の利用分野] 本発明は、接着剤層が形成された一対の絶縁フィルムに
より導体層が挾み込まれてなるフラットケーブルに関す
るもので、特に接着剤層の改良に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a flat cable in which a conductor layer is sandwiched between a pair of insulating films each having an adhesive layer formed thereon. It is about improvement.

〔発明の概要] 本発明は、導体層を挾み込む一対の絶縁フィルムの対向面に熱硬化性接着剤層を形成することに〔従来の技術〕[Summary of the invention] The present invention involves forming a thermosetting adhesive layer on opposing surfaces of a pair of insulating films sandwiching a conductor layer [prior art]

従来より自動車用の電気配線材としては、銅線等に塩化
ビニルを被覆したいわゆる塩ビ被覆線が主として使用さ
れている。特に、自動車用に使用される電気配線材は回
線数にすると600〜800回線と非常に多く、その重
量もかなりのものとなっている。
BACKGROUND ART Conventionally, so-called PVC-coated wires, which are copper wires coated with vinyl chloride, have been mainly used as electrical wiring materials for automobiles. In particular, electrical wiring materials used for automobiles have a very large number of circuits, 600 to 800 circuits, and are also quite heavy.

ところで、近年の自動車においては、パワーウィンドー
(自動開閉窓)や電磁ドアロックシステム等の内装装備
が標準装備とされ、これに伴ってより多くの電気配線材
が必要となってきている。
Incidentally, interior equipment such as power windows (automatic opening/closing windows) and electromagnetic door lock systems have become standard equipment in recent automobiles, and as a result, more electrical wiring materials have become necessary.

例えば、その回線数が1000回線を越える車種も珍し
くなく、当該電気配線材の重量も相当重くなっている。
For example, it is not uncommon for vehicle models to have more than 1000 lines, and the weight of the electrical wiring material is also quite heavy.

これら電気配線材は、通常ドアパネルであるとか天井等
に配設されるが、電気配線材の本数が増加するに連れて
コンパクトに収納することが難しくその作業性が劣化し
てきている。例えば、ワイヤーハーネスのアッセンブリ
ー等は全て手作業で行っている。
These electrical wiring materials are usually arranged on door panels, ceilings, etc., but as the number of electrical wiring materials increases, it has become difficult to store them compactly, and their workability has deteriorated. For example, all wiring harness assembly is done by hand.

そこで、これらの諸問題を解決するために、接着剤層が
形成された一対の絶縁フィルムで配線回路を構成する複
数の導体層を挾み込んで形成したフラットケーブルが提
案されている。このフラットケーブルは、片面に接着剤
が塗布された一対の絶縁フィルムを導体層の両側から挾
み込んで加熱しながら圧着することにより形成されるも
のである。したがって、−本一本銅線の外表面に塩化ビ
ニルを被覆してなる塩ビ被覆線のものとは異なり、同一
フィルム上に所望の配線パターンとなされた複数の導体
層を一括して形成することができるため薄型が可能で、
しかもそれぞれの導体層の絶縁をとる必要もないので重
量も軽く導体占有率の向上も達成される。このため、従
来と同じスペースにより多くの電気配線材が収容可能と
なり、これにより回線数を増加することができる。また
、薄型であることからコンパクトに収納することも容易
でその作業性にも優れる。
In order to solve these problems, a flat cable has been proposed in which a plurality of conductor layers constituting a wiring circuit are sandwiched between a pair of insulating films each having an adhesive layer formed thereon. This flat cable is formed by sandwiching a pair of insulating films coated with adhesive on one side from both sides of a conductor layer and pressing them together while heating. Therefore, unlike a PVC-coated wire made by coating the outer surface of a single copper wire with PVC, it is possible to form multiple conductor layers in a desired wiring pattern on the same film all at once. Because it can be made thinner,
Moreover, since there is no need to insulate each conductor layer, the weight is light and the conductor occupancy rate can be improved. Therefore, more electrical wiring materials can be accommodated in the same space as before, and the number of lines can thereby be increased. In addition, since it is thin, it is easy to store compactly and has excellent workability.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところで、上記フラットケーブルにおいては、通常、接
着剤に熱可塑性接着剤、絶縁フィルムにポリエチレンテ
レフタレートフィルムが使用されている。その具体的な
構成は、例えば第4図に示すように、ポリエチレンテレ
フタレートフィルム(21)上にブライマー層(22)
を介して熱可塑性接着剤層(23)が形成されたもので
ある。なお上記ブライマー層(22)は、ポリエチレン
テレフタレートフィルム(21)と熱可塑性接着剤層(
23)の接着力を高めるために介在されるものである。
By the way, in the above-mentioned flat cable, a thermoplastic adhesive is usually used as the adhesive, and a polyethylene terephthalate film is used as the insulating film. The specific structure is, for example, as shown in FIG. 4, a brimer layer (22) is formed on a polyethylene terephthalate film (21).
A thermoplastic adhesive layer (23) is formed therebetween. The brimer layer (22) is composed of a polyethylene terephthalate film (21) and a thermoplastic adhesive layer (
23) is interposed to increase the adhesive force.

とζろが、。このポリエチレンテレフタレートフィルム
(21)で導体層を被覆したフラットケーブルは、例え
ば第5図に示すように、導体層(24) 、 (24)
上の熱可塑性接着剤層(23) 、 (23)の厚みが
極めて薄く、しかも外観上に凹凸部が見られる。これは
、上記熱可塑性接着剤層(23) 、 (23)を熱プ
レスあるいは熱ロールにて軟化溶融させて接着する際に
加圧するため、この圧力によって前記導体N (24)
 。
and ζroga. A flat cable whose conductor layer is coated with this polyethylene terephthalate film (21) has conductor layers (24), (24), as shown in FIG.
The thickness of the upper thermoplastic adhesive layers (23) and (23) is extremely thin, and unevenness can be seen on the outside. This is because pressure is applied when the thermoplastic adhesive layers (23) and (23) are softened and melted using a heat press or a heat roll and bonded, so that the conductor N (24) is pressed by this pressure.
.

(24)上の熱可塑性接着剤が当該導体層(24)と導
体IW(24)との間に流れ出すためである。したがっ
て、上記導体層(24) 、 (24)上には熱可塑性
接着剤が殆ど無くなってしまう場合が多い。このように
、導体層(24) 、 (24)上の熱可塑性接着剤層
(23) 、 (23)の厚みが極めて薄くなると、接
着力が確保できずしかも絶縁性の点においても信頼性が
薄れる。また、上記フラットケーブルにおいては、導体
層(24)、 (24)部分が凸部となりその他の部分
が凹部となるために、外観上好ましくない。
This is because the thermoplastic adhesive on (24) flows out between the conductor layer (24) and the conductor IW (24). Therefore, in many cases, there is almost no thermoplastic adhesive on the conductor layers (24), (24). In this way, when the thickness of the thermoplastic adhesive layer (23), (23) on the conductor layer (24), (24) becomes extremely thin, it is not possible to secure adhesive strength, and furthermore, reliability in terms of insulation becomes poor. It fades. Furthermore, in the flat cable, the conductor layers (24) and (24) are convex portions and the other portions are concave portions, which is not desirable in terms of appearance.

そこで本発明は、かかる従来の実情に鑑みて提案された
ものであって、導体層上の接着剤層の膜厚を確保し、絶
縁性に優れ且つ外観上凹凸のないフラットコイルを提供
しようとするものである。
Therefore, the present invention was proposed in view of the conventional situation, and an attempt is made to provide a flat coil with excellent insulation properties and no irregularities in appearance by ensuring the thickness of the adhesive layer on the conductor layer. It is something to do.

〔課題を解決するための手段) 本発明のフラットケーブルは、上記の目的を達成するた
めに、対向面に熱硬化性接着剤層が形成されてなる一対
の絶縁フィルム間に配線回路を構成する導体FMが熱可
塑性接着剤層を介して挾み込まれてなることを特徴とす
るものである。
[Means for Solving the Problems] In order to achieve the above object, the flat cable of the present invention configures a wiring circuit between a pair of insulating films each having a thermosetting adhesive layer formed on opposing surfaces. It is characterized in that the conductor FM is sandwiched between thermoplastic adhesive layers.

〔作用] 本発明に係るフラットケーブルにおいては、接着剤に性
質の異なる熱硬化性接着剤と熱可塑性接着剤の二種類を
用い、これを絶縁フィルム上に熱硬化性接着剤、熱可塑
性接着剤の順で塗布して熱硬化性接着剤層と熱可塑性接
着剤層の積層体としている。この絶縁フィルムを用いて
導体層を挾み込み熱プレスあるいは熱ロールによって加
圧しながら圧着すると、上記熱可塑性接着剤層は軟化溶
融して溶は出すものの、熱硬化性接着剤層は溶は出すこ
となく上記導体層上に略そのままの厚みで残る。したが
って、」二記導体層部分での接着力が確保され、絶縁性
も向上する。また、外観上に凹凸も見られることもない
。この一方で、上記熱可塑性接着剤によって接着力がよ
り一層強化される。
[Function] In the flat cable according to the present invention, two types of adhesives having different properties, a thermosetting adhesive and a thermoplastic adhesive, are used, and the thermosetting adhesive and the thermoplastic adhesive are applied onto an insulating film. The thermosetting adhesive layer and the thermoplastic adhesive layer are applied in this order to form a laminate. When this insulating film is used to sandwich a conductor layer and press it with a hot press or hot roll, the thermoplastic adhesive layer softens and melts and melts, but the thermosetting adhesive layer melts. It remains on the conductor layer with substantially the same thickness without any damage. Therefore, the adhesive strength at the conductor layer portion 2 is ensured, and the insulation properties are also improved. Moreover, no irregularities are seen on the appearance. On the other hand, the adhesive force is further strengthened by the thermoplastic adhesive.

[実施例] 以下、本発明を適用した具体的な実施例を図面を参照し
ながら説明する。
[Example] Hereinafter, specific examples to which the present invention is applied will be described with reference to the drawings.

本実施例のフラットケーブルは、第3図に示す熱硬化性
接着剤層(1)と熱可塑性接着剤層(2)が順次積層形
成された一対の絶縁フィルム(3)を第1図及び第2図
に示すように配線回路を構成する複数の導体層(4) 
、 (4)の両側から挾み込み熱圧着することにより形
成されるものである。
The flat cable of this example consists of a pair of insulating films (3) in which a thermosetting adhesive layer (1) and a thermoplastic adhesive layer (2) shown in FIG. 3 are sequentially laminated. As shown in Figure 2, multiple conductor layers (4) make up the wiring circuit.
, (4) is formed by sandwiching and thermocompression bonding from both sides.

上記フラットケーブルは、導体層(4) 、 (4)の
配線パターン形状に応じて直線及び曲線を含む形状とな
されている。もちろん、このフラットケーブルの形状は
所望の配線パターンに応じて適宜決定すればよいもので
、例えば直線形状のみであってもよい。
The flat cable has a shape including straight lines and curves depending on the shape of the wiring pattern of the conductor layers (4), (4). Of course, the shape of this flat cable may be determined as appropriate depending on the desired wiring pattern, and may be, for example, only in a straight line shape.

上記絶縁フィルム(3)の材料としては、例えばポリエ
チレンテレフタレート等が使用でき、本実施例では25
μm厚のポリエチレンテレフタレートフィルムを使用し
た。
As the material for the insulating film (3), for example, polyethylene terephthalate or the like can be used, and in this example, 25
A μm thick polyethylene terephthalate film was used.

また、上記熱硬化性接着剤層(1)及び熱可塑性接着剤
層(2)は、それぞれ熱硬化性接着剤あるいは熱可塑性
接着剤を上記絶縁フィルム(3)上に順次塗布すること
により形成される。本実施例では、上記熱硬化性接着剤
N(1)及び熱可塑性接着剤層(2)に性質の異なるポ
リエステル系接着剤を使用した。本実施例で使用した熱
硬化性接着剤及び熱可塑性接着剤の組成を以下に示す。
Further, the thermosetting adhesive layer (1) and the thermoplastic adhesive layer (2) are formed by sequentially applying a thermosetting adhesive or a thermoplastic adhesive onto the insulating film (3), respectively. Ru. In this example, polyester adhesives having different properties were used for the thermosetting adhesive N (1) and the thermoplastic adhesive layer (2). The compositions of the thermosetting adhesive and thermoplastic adhesive used in this example are shown below.

然硬化1斐l肚鋤底 飽和ポリエステル樹脂     100重量部(ユニチ
カ社製;商品名 UE−3221)水酸化アルミニウム
      100重量部(昭和軽金属社製; 商品名 ハイシライトH−42M) 酸化チタン           10重量部(石原産
業社製;商品名 R−820)トリレンジイソシアネー
ト      1重量部(日本ポリウレタン工業社製; 商品名 コロネートし) メチルエチルケトン(MEK)  100重量部トルエ
ン           ioo重量部熟jL■1接J
L!!l!L吸 飽和ポリエステル樹脂     100重量部(東洋紡
社製;商品名 バイロン300)水酸化アルミニウム 
      75重量部(昭和軽金属社製; 商品名 ハイシライトH−42M) 酸化チタン           10重量部(石原産
業社製;商品名 R−820)メチルエチルケトン(M
EK)   100fU1部トルエン        
   100重量部上記組成の熱硬化性接着剤は、加熱
により硬化する性質を有し、熱に強いのみならず溶剤に
対しても溶は難い性質を有する。これに対して、上記組
成の熱可塑性接着剤は、加熱すると塑性変形し易く、冷
却すると可逆的に硬化する性質を有する。
Naturally cured 1 l plow sole saturated polyester resin 100 parts by weight (manufactured by Unitika Co., Ltd.; trade name UE-3221) Aluminum hydroxide 100 parts by weight (manufactured by Showa Light Metal Co., Ltd.; trade name Hisilite H-42M) Titanium oxide 10 parts by weight ( Manufactured by Ishihara Sangyo Co., Ltd.; Product name: R-820) Tolylene diisocyanate 1 part by weight (Manufactured by Nippon Polyurethane Industries Co., Ltd.; Product name: Coronatoshi) Methyl ethyl ketone (MEK) 100 parts by weight Toluene ioo Part by weight
L! ! l! L-adsorption saturated polyester resin 100 parts by weight (manufactured by Toyobo Co., Ltd.; trade name: Vylon 300) Aluminum hydroxide
75 parts by weight (manufactured by Showa Light Metal Co., Ltd.; trade name Hisilite H-42M) Titanium oxide 10 parts by weight (manufactured by Ishihara Sangyo Co., Ltd.; trade name R-820) Methyl ethyl ketone (M
EK) 100fU 1 part toluene
100 parts by weight The thermosetting adhesive having the above composition has the property of being hardened by heating, and is not only resistant to heat but also difficult to dissolve in solvents. On the other hand, the thermoplastic adhesive having the above composition has the property of being easily plastically deformed when heated, and reversibly hardened when cooled.

上記熱硬化性接着剤及び熱可塑性接着剤は、上記組成の
ものに限らず上記のような性質を有するものであれば如
何なるものであってもよい。
The above-mentioned thermosetting adhesive and thermoplastic adhesive are not limited to those having the above-mentioned composition, but may be of any kind as long as they have the above-mentioned properties.

上記熱硬化性接着剤層(1)の膜厚に関しては、少なく
とも導体層(4) 、 (4) と絶縁フィルム(3)
 、 (3)との接着力が確保できしかも絶縁性が確保
できる厚みであることが必要である。したがって、上記
熱硬化性接着剤層(1)の膜厚は、5〜50tImの範
囲が好適である。一方、熱可塑性接着剤層(2)の膜厚
に関しては、導体層(4) 、 (4)と熱硬化性接着
剤層(1) 、 (1)との接合強度がある程度確保で
きる量であればよいため、その膜厚は20〜50μmで
あることが望ましい、なお本実施例では、上記熱硬化性
接着剤層(1)の膜厚を10μmとし、熱可塑性接着剤
層(2)の膜厚を40μmとした。
Regarding the film thickness of the thermosetting adhesive layer (1), at least the conductor layers (4), (4) and the insulating film (3)
, (3) It is necessary that the thickness is such that it can secure adhesive strength with the substrate and also ensure insulation properties. Therefore, the thickness of the thermosetting adhesive layer (1) is preferably in the range of 5 to 50 tIm. On the other hand, the thickness of the thermoplastic adhesive layer (2) should be such that a certain degree of bonding strength between the conductor layer (4), (4) and the thermosetting adhesive layer (1), (1) is ensured. Therefore, it is desirable that the film thickness is 20 to 50 μm. In this example, the film thickness of the thermosetting adhesive layer (1) is 10 μm, and the film thickness of the thermoplastic adhesive layer (2) is 10 μm. The thickness was 40 μm.

なお、上記熱硬化性接着剤層(1)として、イソシアネ
ート硬化タイプの接着剤を使用すれば、ポリエチレンテ
レフタレートフィルムに対する接着性が向上するため、
当該ポリエチレンテレフタレートフィルムと接着剤間の
接着力を高めるためのプライマー層を介在させる必要が
なくなる。
Note that if an isocyanate curing type adhesive is used as the thermosetting adhesive layer (1), the adhesiveness to the polyethylene terephthalate film will be improved.
There is no need to provide a primer layer to increase the adhesive strength between the polyethylene terephthalate film and the adhesive.

上述のように互いに性質の異なる接着剤を積層した一対
の絶縁フィルム(3) 、 (3)を導体層(4) 、
 (4)の両側から挾み込んで熱プレスあるいは熱ロー
ルにて加熱しながら圧力を加えて接合一体化すると、導
体層(4) 、 (4)と直接接する熱可塑性接着剤]
’! (2) 。
As mentioned above, a pair of insulating films (3) are laminated with adhesives having different properties, and (3) is layered with a conductor layer (4).
When the thermoplastic adhesive is sandwiched from both sides of (4) and joined together by applying pressure while heating with a heat press or a hot roll, it comes into direct contact with the conductor layers (4) and (4)]
'! (2).

(2)は上記熱プレス等により軟化溶融されて当該熱硬
化性接着剤層士が接着される。この一方、上記熱硬化性
接着剤層(1) 、 (1)は、軟化溶融することがな
いためほぼそのままの形で残る。したがって、上記導体
71 (4) 、 (4)上には所定膜厚の熱硬化性接
着剤層(1) 、 (1)が残存し、当該導体層(4)
 、 (4)と絶縁フィルム(3) 、 (3)との接
着力が確保されるとともに絶縁性も確保される。また、
このように加熱及び圧力を加えても熱硬化性接着剤層(
1) 、 (1)が溶融して流れ出すことがないために
、外観上に凹凸が現れることはない。したがって、上記
フラットケーブル表面は平坦な面となる。また、導体層
(4) 、 (4)上の熱硬化性接着剤層(2) 、 
(2)の膜厚を確保することができるので、上記絶縁フ
ィルム(3) 、 (3)の膜厚が薄い場合でも絶縁性
が取れ耐電性が良好となる。
(2) is softened and melted by the heat press or the like, and the thermosetting adhesive layer is bonded thereto. On the other hand, the thermosetting adhesive layers (1) and (1) are not softened and melted, and therefore remain in almost the same form. Therefore, the thermosetting adhesive layer (1), (1) of a predetermined thickness remains on the conductor layer (4), (4).
, (4) and the insulating film (3), (3) are ensured as well as their insulation properties. Also,
Even when heat and pressure are applied in this way, the thermosetting adhesive layer (
1) Since (1) does not melt and flow out, no irregularities appear on the appearance. Therefore, the surface of the flat cable becomes a flat surface. In addition, the conductor layer (4), the thermosetting adhesive layer (2) on (4),
Since the film thickness of (2) can be ensured, even if the film thickness of the above-mentioned insulating films (3) and (3) is thin, the insulation properties can be maintained and the electric resistance is good.

なお、上述の本実施例のフラットケーブルにおいては、
いずれも両方の絶縁フィルム上に熱硬化性接着剤層と熱
可塑性接着剤層を積層したものを使用しているが、例え
ば一方の絶縁フィルム上に熱硬化性接着剤層のみを形成
したものを用いてもよい、もちろんこの場合には、他方
の絶縁フィルムの熱硬化性接着剤層上に積層される熱可
塑性接着剤層の膜厚を厚くして接着力を確保しておく必
要がある。
In addition, in the flat cable of this example described above,
In both cases, a thermosetting adhesive layer and a thermoplastic adhesive layer are laminated on both insulating films, but for example, one insulating film in which only a thermosetting adhesive layer is formed is Of course, in this case, it is necessary to increase the thickness of the thermoplastic adhesive layer laminated on the thermosetting adhesive layer of the other insulating film to ensure adhesive strength.

〔発明の効果〕〔Effect of the invention〕

以上の説明からも明らかなように、本発明のフラットケ
ーブルにおいては、熱に強く溶剤に溶は難い熱硬化性接
着剤層を絶縁フィルムの対向面に形成しているので、こ
れら絶縁フィルムを熱プレス等によって熱圧着しても当
該熱硬化性接着剤層は溶融して流れ出すことなくそのま
まの形で導体層上に残る。したがって、導体層と絶縁フ
ィルムとの接着力が確保されるとともに絶縁性も向上す
る。
As is clear from the above explanation, in the flat cable of the present invention, a thermosetting adhesive layer that is strong against heat and difficult to dissolve in solvents is formed on the opposite surface of the insulating film, so that these insulating films can be Even when thermocompression bonding is carried out using a press or the like, the thermosetting adhesive layer remains on the conductor layer as it is without melting and flowing out. Therefore, the adhesive strength between the conductor layer and the insulating film is ensured, and the insulation properties are also improved.

また、上記熱硬化性接着剤層が溶融して流れ出すことが
ないため、外観上に凹凸が見られることがなく平坦なフ
ラットケーブルが得られる。さらには、当該熱硬化性接
着剤層の膜厚が確保されるために、絶縁フィルムの膜厚
が薄くとも絶縁性が高く耐電圧が良好になる。
In addition, since the thermosetting adhesive layer does not melt and flow out, a flat cable with no visible irregularities can be obtained. Furthermore, since the thickness of the thermosetting adhesive layer is ensured, even if the thickness of the insulating film is thin, the insulation is high and the withstand voltage is good.

なお、さらに上記熱硬化性接着剤層としてイソシアネー
ト硬化タイプの接着剤を使用すれば、ポリエチレンテレ
フタレートフィルムに対する接着性が向上するため、ブ
ライマー層を省略することができる。
Further, if an isocyanate curing type adhesive is used as the thermosetting adhesive layer, the adhesion to the polyethylene terephthalate film is improved, so that the brimer layer can be omitted.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明を適用したフラットケーブルの一例を示
す要部拡大断面図であり、第2図はその概略平面図であ
る。 第3図は熱硬化性接着剤層と熱可塑性接着剤層が積層形
成された絶縁フィルムの要部拡大断面図である。 第4図は熱可塑性接着剤層のみが形成された絶縁フィル
ムの要部拡大断面図である。 第5図は従来のフラットケーブルの一例を示す要部拡大
断面図である。 1 ・ ・ 2 ・ ・ 3 ・ ・ ・熱硬化性接着剤層 ・熱可塑性接着剤層 ・絶縁フィルム ・・・導体層 特許出願人 ソニーケミカル株式会社 代理人 弁理士   小 池   見 回  田村榮 同  佐藤 勝 第2図 第3図 第4図 第5図
FIG. 1 is an enlarged sectional view of a main part showing an example of a flat cable to which the present invention is applied, and FIG. 2 is a schematic plan view thereof. FIG. 3 is an enlarged sectional view of a main part of an insulating film in which a thermosetting adhesive layer and a thermoplastic adhesive layer are laminated. FIG. 4 is an enlarged sectional view of a main part of an insulating film on which only a thermoplastic adhesive layer is formed. FIG. 5 is an enlarged sectional view of a main part showing an example of a conventional flat cable. 1 ・ ・ 2 ・ ・ 3 ・ ・ Thermosetting adhesive layer, thermoplastic adhesive layer, insulating film...conductor layer Patent applicant Sony Chemical Corporation Representative Patent attorney Mimi Koike Eido Tamura Masaru Sato Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

【特許請求の範囲】[Claims] 対向面に熱硬化性接着剤層が形成されてなる一対の絶縁
フィルム間に配線回路を構成する導体層が熱可塑性接着
剤層を介して挾み込まれてなることを特徴とするフラッ
トケーブル。
A flat cable characterized in that a conductor layer constituting a wiring circuit is sandwiched between a pair of insulating films each having a thermosetting adhesive layer formed on opposing surfaces via a thermoplastic adhesive layer.
JP2046389A 1989-01-30 1989-01-30 Flat cable Expired - Fee Related JPH07120492B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2046389A JPH07120492B2 (en) 1989-01-30 1989-01-30 Flat cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2046389A JPH07120492B2 (en) 1989-01-30 1989-01-30 Flat cable

Publications (2)

Publication Number Publication Date
JPH02201815A true JPH02201815A (en) 1990-08-10
JPH07120492B2 JPH07120492B2 (en) 1995-12-20

Family

ID=12027781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2046389A Expired - Fee Related JPH07120492B2 (en) 1989-01-30 1989-01-30 Flat cable

Country Status (1)

Country Link
JP (1) JPH07120492B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04248311A (en) * 1991-01-21 1992-09-03 Ohbayashi Corp Electric wiring method
US10770753B2 (en) 2015-04-03 2020-09-08 Toyota Jidosha Kabushiki Kaisha Electrolyte for fluoride ion battery and fluoride ion battery

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0772206A3 (en) 1995-11-02 2000-01-19 Mitsubishi Cable Industries, Ltd. Flat cable and fabrication thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04248311A (en) * 1991-01-21 1992-09-03 Ohbayashi Corp Electric wiring method
US10770753B2 (en) 2015-04-03 2020-09-08 Toyota Jidosha Kabushiki Kaisha Electrolyte for fluoride ion battery and fluoride ion battery

Also Published As

Publication number Publication date
JPH07120492B2 (en) 1995-12-20

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