JPS635879Y2 - - Google Patents

Description

[Detailed description of the invention] A. Industrial application field The present invention relates to a flexible conductive fabric provided with a band-shaped metal foil electrode. The object of the present invention is to obtain a conductive fabric that maintains good current-carrying properties.

B. Conventional technology Conductive fabrics include those made by applying methods such as chemical plating or vacuum deposition to knitted or woven fabrics or non-woven fabrics to form a metal thin film surface, or fabrics whose constituent fibers themselves are made of conductive fibers such as carbon fibers. What has been done is known. When these conductive fabrics are used for applications such as low-temperature planar heating elements, electromagnetic shielding materials, and antistatic materials, metal electrodes are arranged to obtain uniform current conduction characteristics over the entire surface of the fabric.

When used for the above-mentioned applications, it is often desirable that the conductive fabric be flexible, and for this purpose, similar flexibility is required at the electrode placement locations.

Conventionally, as a means for arranging electrodes while maintaining the flexibility of a conductive fabric, a linear,
Some of the known methods include weaving a strip-shaped metal conductor, applying two conductive paints, and applying three metal foils by sandwiching and pasting them with adhesive tape.

C. Problems to be Solved by the Invention In the conventional electrode arrangement structure described above, the first method requires time and effort to weave in the electrodes, and the product is limited to a fixed use, with little flexibility. In the case of the second method, since the conductive paint penetrates into the fabric and hardens, not only does the flexibility decrease, but also it is difficult to obtain sufficient electrical conductivity. The method using the third method often has problems such as the electrode surface being separated from the conductive fabric surface, resulting in poor contact, and an improvement in this problem has been desired.

D. Means for solving the problem The present invention solves the above problem, and uses a band-shaped metal foil with distributed perforations as an electrode, which is laminated on the surface of a conductive fabric, and then thermally bonded from the top surface. The thermoadhesive sheet is coated with a conductive fabric and thermocompression bonded to adhere the thermoadhesive sheet to the strip-shaped metal foil electrode, and the electrode is bonded by adhering the thermoadhesive sheet to the conductive fabric at the periphery and perforation of the strip-shaped metal foil electrode. It is something that I have acquired.

Copper foil or aluminum foil is usually used as the strip-shaped metal foil electrode, but other metal foils may also be used. The shape, size, and distribution density of the holes are determined so that the upper heat-adhesive sheet is adhered to the conductive fabric on the back side through the perforated portion, and the metal foil electrode is brought into sufficient contact with the conductive fabric. Alternatively, the heat-adhesive sheet can be made by spraying and melting particulate heat-sealable adhesive on one side of a base sheet such as a relatively thin cloth or plastic film, or by coating and laminating a heat-sealable adhesive on one side of the base sheet. However, when a conductive fabric is used as a surface heating element, it goes without saying that the base sheet and heat-sealing adhesive should be selected to withstand the operating temperature.

E. Effect With the above configuration, the shape of the band-shaped metal foil electrode is stabilized by bonding a thermally adhesive sheet to one surface thereof, and conductivity is achieved at the periphery of the band-shaped metal foil electrode and the perforated portions formed in a distributed manner. Since the electrode surface is pressure-bonded to the fabric, the electrode surface is directly in close contact with the entire conductive fabric and has good electrical conductivity.

Since the strip metal foil electrode is not adhered to the conductive fabric, the laminated portion has flexibility,
It can be deformed following the bending deformation of the conductive fabric, and good electrical conductivity can be maintained without changing the surface contact state.

F. Embodiment The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view of a band-shaped metal foil electrode, and Fig. 2 is a plan view of a band-shaped metal foil electrode. A plan view of the fabric, and FIG. 3 is an enlarged sectional view taken along line AA in FIG. 2.

The strip-shaped metal foil electrode 1 is a copper foil with a thickness of 20μ and a width of 20mm, with holes of 5mm in diameter on both sides of its longitudinal center line.
The perforations 2 are provided in a staggered manner with a distance between hole centers of approximately 10 mm.

The conductive fabric 3 has a polyester fiber fabric as a base fabric and is coated with known electroless nickel plating, and the heat-adhesive sheet 5 has a base sheet made of a blended fabric of polyester fibers and cotton, and has polyamide on one side. Adhesive layer 4 with resin powder sprinkled and fused
was formed.

Then, on opposite side edges of the conductive fabric 3,
By laminating the strip-shaped metal foils and further layering the heat-adhesive sheet 5 on the top surface and bonding them by thermocompression, the heat-adhesive sheet 5 covers one surface of the strip-shaped metal foil electrode and its periphery, as shown in the cross section of FIG. The band-shaped metal foil electrodes 1 are attached to the 3 surfaces of the conductive fabric at the 2 portions of the perforations, respectively.

The distance between the above band-shaped metal foil electrodes 1 and 1 is approximately 7 cm.
and the electrical resistance of the conductive fabric 3 between them was set to 6 ohms at an ambient temperature of 21°C.
When a DC voltage of 3V and 6V was applied, the surface temperature of the conductive fabric 3 rose by 10°C and 20°C, respectively. When this material was coated with a polyester film and laminated on the inner surface of clothing to make rescue clothing, sufficient flexibility was obtained even in the electrode portion, and no contact failure of the electrodes occurred even after repeated bending.

G. Effects of the invention As described above, according to the invention, the band-shaped metal foil electrode portion provided on the conductive fabric has sufficient flexibility, and even when subjected to bending deformation, the electrical conductivity in the electrode portion does not decrease. Therefore, it has practical effects in applications such as low-temperature sheet heating elements, electromagnetic shielding covers, and antistatic materials that utilize the flexibility of conductive fabrics.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a band-shaped metal foil electrode, FIG. 2 is a plan view of an embodiment of the present invention, and FIG. 3 is an enlarged sectional view taken along line AA in FIG. DESCRIPTION OF SYMBOLS 1... Band-shaped metal foil electrode, 2... Perforation, 3... Conductive fabric, 4... Adhesive layer, 5... Heat adhesive sheet.

Claims (1)

[Scope of utility model registration request] A band-shaped metal foil electrode 1 having perforations 2 distributed thereon is laminated on the upper surface of the conductive fabric 3, and a thermally adhesive sheet 5 is further laminated to cover the upper surface, and the thermally adhesive sheet 5 is bonded by thermocompression. A conductive fabric provided with a metal foil electrode, characterized in that a heat-adhesive sheet 5 is adhered to the conductive fabric 3 at the periphery of the band-shaped metal foil electrode 1 and at the portion of the perforations 2, as well as the metal foil electrode 1.