JPH04248299A - Conductive film - Google Patents

Abstract

PURPOSE:To make the static electricity leak in a good condition even when a part of a conductive pattern is broken by providing the conductive pattern to form a specific design on a flexible resin type film base. CONSTITUTION:On the surface of a vinyl chloride film base 3 of a flexible resin type film base, a conductive pattern 2 to form plural designs connected symmetrically and electrically, and spread continuously is formed. By this pattern 2, even when a part of the pattern 2 is broken, a conductive film in which the electric continuity of the pattern 2 is maintained, and the static electricity can leak in a good condition, is obtained.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive film that prevents static electricity charging.

0002

2. Description of the Related Art Conventionally, static electricity has often been generated in various electrical devices, which has caused malfunctions of the devices and, in some cases, caused damage to the devices.

[0003] Therefore, in order to dissipate the generated static electricity (grounding), electrical equipment is usually provided with a grounding wire, or a sheet made of resin with a conductive layer formed on its surface. and covered the area around the equipment.

0004

[Problem to be Solved by the Invention] However, although the above-mentioned resin sheets usually have considerable flexibility,
During use, they may bend or break, resulting in loss of conductivity.

[0005] Particularly when the temperature of the environment in which such a sheet is used is low, the sheet is often damaged and its conductivity is significantly impaired. An object of the present invention is to provide a conductive film that is less likely to be damaged and lose its conductivity.

[0006]

[Means for Solving the Problems] That is, the present invention, which has been made to achieve the above object, provides a conductive film in which a conductive layer is formed on the surface of a flexible resin film, in which a plurality of conductive layers are formed. The gist of the present invention is a conductive film characterized in that it is composed of a thin film conductive pattern, and the conductive patterns are brought into contact with each other to form a symmetrical continuous pattern made of the conductive pattern.

[0007] Here, the material for the conductive film is not particularly limited as long as it is a flexible resin, and for example, vinyl chloride, polyethylene, polypropylene, etc. can be used.

Further, as the material for the conductive pattern, for example, a paste mixed with a conductive material, conductive rubber, carbon fiber, or the like can be used. Furthermore,
The shape of the conductive pattern is not particularly limited, and a polygonal frame shape such as a triangle or square, a circular frame shape, or the like can be adopted.

The electrical resistivity of the conductive pattern for grounding static electricity can be set, for example, in the range of 10 3 to 10 10 Ω·cm, preferably 10 5 to 10 Ω·cm.
It is in the range of 8Ω·cm.

0010

[Function] In the conductive film of the present invention, a conductive layer capable of dissipating static electricity is formed on the surface of a flexible resin film. The conductive layer is constructed by bringing a plurality of thin film conductive patterns into contact with each other, thereby forming a symmetrical continuous pattern.

[0011] Therefore, even if the conductive film is bent in any direction, its conductivity is prevented from being impaired.

0012

[Example] Examples of the conductive film according to the present invention will be explained below based on the drawings. FIG. 1 shows a conductive film 1 of the first embodiment, in which FIG. 1(A) shows an end of the conductive film 1, and FIG. 1(B) shows a continuous conductive pattern 2. There is. As shown in FIG. 1, on the surface of the conductive film 1 of this embodiment, a symmetrical circular frame-shaped continuous pattern consisting of the same type of conductive patterns 2 is formed.

The conductive film 1 has a film substrate 3 made of vinyl chloride, for example, and a conductive pattern 2 made of a thin conductive material formed on the surface thereof. As this conductive material, for example, a mixture of conductive rubber and a binder can be used.

When manufacturing the conductive film 1, first, a flexible film substrate 3 is manufactured using, for example, vinyl chloride as a material by a normal resin film manufacturing method. Thereafter, a conductive rubber material and a binder are mixed to form a paste, and this paste is used to form a thin film conductive pattern 2 on the film substrate 3 by silk printing or the like.

When forming the conductive pattern 2, small circular frame-shaped conductive patterns 2 may be printed one on top of the other. In the conductive film 1 formed in this way, the conductive patterns 2 are spread out in a continuous symmetrical pattern that is electrically connected in the vertical and slightly horizontal directions.

Therefore, even if the conductive film 1 is bent and the electrical connection of some of the conductive patterns 2 is damaged, a detour is ensured by the conductive patterns 2 that spread symmetrically in all directions. Therefore, the ability to dissipate static electricity is not impaired. In addition, since the symmetrical conductive pattern 2 is continuous, no matter where there is damage,
There is no directionality in the ability to dissipate static electricity.

Particularly in cold regions, the resin film substrate 2 is easily damaged due to the low temperature, but in this embodiment, the conductive pattern 2 is spread symmetrically in all directions.
Even in such cases, sufficient grounding can be ensured,
It has a great effect.

Next, as other examples, the second to fifth examples will be explained based on the drawings. In each example, the only difference is the pattern of the repeated conductive pattern.
There is no particular difference in the materials used.

FIG. 2 shows a conductive film 10 of a second embodiment.
This conductive film 10 has a square frame-shaped conductive pattern 11 formed therein. FIG. 3 shows a conductive film 20 of the third embodiment, and this conductive film 20 includes a regular hexagonal frame-shaped conductive pattern 21.
is formed.

FIG. 4 shows a conductive film 30 of the fourth embodiment.
This conductive film 30 has an equilateral triangular frame-shaped conductive pattern 31 formed therein. FIG. 5 shows a conductive film 40 according to a fifth embodiment, in which an elliptical frame-shaped conductive pattern 41 is formed.

The conductive films 10, 20, 30, and 40 of the second to fifth embodiments as described above also provide the same effects as those of the first embodiment.

[0022]

As explained above, according to the present invention, a plurality of thin film conductive patterns are brought into contact with each other on the surface of a flexible resin film to create symmetry of the conductive patterns. Since a continuous pattern is formed, even if a part of the conductive pattern is damaged, static electricity can be properly dissipated, and there is no directionality.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a part of a conductive film according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a part of a conductive film according to a second embodiment of the present invention.

FIG. 3 is a plan view showing a part of a conductive film according to a third embodiment of the present invention.

FIG. 4 is a plan view showing a part of a conductive film according to a fourth embodiment of the present invention.

FIG. 5 is a plan view showing a part of a conductive film according to a fifth embodiment of the present invention.

[Explanation of symbols]

1, 10, 20, 30, 40... Conductive film 2, 11
, 21, 31, 41... Conductive pattern 3... Film substrate

Claims (1)

[Claims] 1. A conductive film in which a conductive layer is formed on the surface of a flexible resin film, wherein the conductive layer is composed of a plurality of thin conductive patterns, and the conductive patterns are in contact with each other. A conductive film characterized in that a continuous pattern having symmetry is formed by the conductive pattern.