JP2620613B2 - Static elimination mat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a static elimination mat.

[0002]

2. Description of the Related Art A conventional static elimination mat is disclosed in Japanese Patent Application Laid-Open No. 2-267893 filed by the present applicant. As shown in FIG. 3, the static elimination mat 1 is formed by adding conductive short fibers to paper and has a discharge paper 3 from which a portion of the conductive short fibers protrudes from the paper surface. The static electricity charged on the human body by the discharge paper 3 is quickly absorbed and discharged in the air. However, the discharge paper 3 in the static elimination mat 1 is brittle,
The structure that discharges static electricity has a drawback that it is easily destroyed when a slight external force is applied. In order to overcome this disadvantage, in the static elimination mat according to the above-mentioned application, the base cloth 2 is bonded to the discharge paper 3 with the adhesive 7.

[0003]

However, in this static elimination mat, although the mechanical strength of the discharge paper is increased by adhering a base cloth to the discharge paper, air discharge occurs when a pile is driven. The structure for was partially destroyed. In addition, it was necessary to bond the base cloth with an adhesive to reinforce the discharge paper.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a static elimination mat using a novel high-strength discharge sheet, in which a structure for discharging static electricity in the air is not easily destroyed even when a pile is driven. It is intended to provide.

[0005]

In order to achieve the above object, according to the present invention, conductive short fibers are formed together with a porous high-strength sheet material, and a portion of the conductive short fibers protrudes from the sheet surface. The gist of the present invention is a static elimination mat characterized in that a pile containing conductive fibers is driven into the resulting high-strength discharge sheet.

Hereinafter, the static elimination mat of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the static elimination mat 11 of the present invention includes a high-strength discharge sheet 14, a pile 15 driven into the high-strength discharge sheet 14, and a pile 15.
And a backing layer 16 formed on the back surface of the high-strength discharge sheet 14 into which the high-intensity discharge sheet 14 is implanted. The high-strength discharge sheet 14 is formed by forming conductive short fibers 13 together with the porous high-strength sheet material 12, and a part of the conductive short fibers 13 protrudes from the surface of the sheet 14.

The porous high-strength sheet material 12 comprises a pile 15
Has a certain strength and elongation such that it is not easily damaged at the time of driving, and examples thereof include a nonwoven fabric, a mesh, and a polyamide woven fabric.
Further, the fibers constituting the porous high-strength sheet material 12 are not particularly limited, but fibers having excellent mechanical strength such as aramid fibers are preferable. In particular, since aramid fiber is excellent in electrical conductivity as well as mechanical strength, by adopting a porous high-strength sheet material using the same, mechanical strength and electrical conductivity in the high-strength discharge sheet 14 are further increased. become.

The conductive short fibers 13 are formed together with the porous high-strength sheet material 12 to form a high-strength discharge sheet 14. Examples of the conductive short fibers 13 used for the high-strength discharge sheet 14 include carbon fibers, metal fibers, and conductive ceramic fibers. In addition to the conductive short fibers 13, synthetic fibers such as acrylic fibers and polyester fibers, pulp, and thermoplastic binders such as polyvinyl alcohol are added during papermaking.

The high-strength discharge sheet 14 is formed by adding a porous high-strength sheet material 12 and conductive short fibers 13 to a paper material made of these synthetic fibers, pulp, and a thermoplastic binder. The papermaking method is not particularly limited, and a conventionally known method can be employed. The paper material containing the conductive short fibers 13 enters between the fibers and the fibers constituting the porous high-strength sheet material 12 by papermaking, and the porous high-strength sheet material 12 is held in the fiber layer. .

On the surface of the sheet 14, a part of the conductive fibers (preferably 50 or more per square centimeter of the sheet) protrudes irregularly in the vertical or oblique direction from the surface of the sheet 14, and the static electricity from the protruding portion. Are to be discharged in the air.

The type, woven structure, and coarseness of the porous high-strength sheet material 12 are not particularly limited. However, if the sheet material is too fine, 50 or more fibers per square centimeter of the sheet are used. A protruding fine structure cannot be produced. Conversely, if the sheet is too coarse, sufficient mechanical strength cannot be obtained. It is preferable to use a gauze having a coarseness of about gauze plain-woven at intervals of 0.5 to 2 mm.

The high-strength discharge sheet 1 constructed as described above
4 is driven into a substantially U-shape with a plurality of piles 15 penetrating therethrough. The pile 15 includes two types, one made of only synthetic fibers such as polyamide fibers and the other made of synthetic fibers containing conductive fibers. The ratio of these two types of piles 15 to be driven into the mat 11 is appropriately determined in consideration of the size, use state, price, and the like of the mat 11.

In the static elimination mat 11 configured as described above, the static electricity charged to the human body in the vehicle is grounded to the pile 15 of the static elimination mat 11 when the human body comes into contact with the static elimination mat 11, and The high-strength discharge sheet 14 absorbs through the fifteen conductive fibers and discharges in the air. Further, a part of the static electricity is discharged in the air through the conductive fibers included in the pile 15.

[0014]

According to the above configuration, the first aspect of the present invention is provided.
In the static elimination mat described above, conductive short fibers are formed together with a porous high-strength sheet material, and a pile containing conductive fibers is formed in a high-strength discharge sheet in which a portion of the conductive short fibers protrude from the sheet surface. Since it is driven, the structure for discharging static electricity in the air is not easily destroyed even when a pile is driven. Also, there is no need to bond the base cloth for reinforcement, and the manufacturing cost can be reduced accordingly.

In the static elimination mat according to the second aspect, the porous high-strength sheet material is made of aramid fiber.
The mechanical strength and conductivity of the high-strength discharge sheet can be further increased.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a static elimination mat of the present invention.

FIG. 2 is an enlarged sectional view of a main part showing a static elimination mat of the present invention.

FIG. 3 is an enlarged sectional view of a main part showing a conventional static elimination mat.

[Explanation of symbols]

 12 ... porous high strength sheet material 13 ... conductive short fiber 14 ... high strength discharge sheet 15 ... pile

Claims (2)

(57) [Claims] An electroconductive short fiber is formed together with a porous high-strength sheet material, and a pile containing the electroconductive fiber is driven into a high-strength discharge sheet in which a part of the conductive short fiber protrudes from the sheet surface. A static elimination mat characterized by the following. 2. The static elimination mat according to claim 1, wherein said porous sheet material is made of aramid fiber.