JPH0645325B2 - Method of manufacturing antistatic mat - Google Patents

Description

The present invention relates to a method for producing an antistatic mat. More specifically, the present invention relates to a method for manufacturing an antistatic mat that can instantly remove static electricity charged by a human body in a vehicle to remove discomfort caused by a discharge phenomenon when getting on and off the vehicle.

(Prior Art) Conventionally, an antistatic mat of this type has been disclosed in JP-A-61-1.
There is one described in Japanese Patent No. 10632.

This antistatic mat (1) is used as a base cloth as shown in FIG.
(2) A conductive base cloth is formed by using a conductive thread (3) for a part of the system, and one end of the antistatic mat (1) is electrically connected to the vehicle body side. It is equipped with a cord (5).

And in this antistatic mat, the connection cord
The other end of (5) is attached to the vehicle body side so that static electricity generated due to friction with the hem of shoes or pants while getting on or off the vehicle or driving is grounded to the vehicle body side.

(Problems to be Solved by the Invention) However, in this antistatic mat, the static electricity from the human body is grounded to the vehicle body side by the connection cord attached to one end of the antistatic mat. Sometimes the preventive mat slipped off when getting on or off, and the connection cord came off the side of the vehicle body and could not be grounded.
Further, in order to attach the connection cord, it is necessary to provide a groundable attachment portion on the vehicle body side. Further, since the automobile itself and the body are not in direct contact with the ground, it is necessary to attach a grounding means such as an earth belt for grounding the static electricity of the charged body to the body.

The present invention has been made in view of such problems,
The problem to be solved is that it is necessary to attach a connection cord for grounding the static electricity charged on the mat to the vehicle body side.

INDUSTRIAL APPLICABILITY The present invention is capable of instantly removing static electricity charged by a human body in a vehicle, eliminating discomfort caused by a discharge phenomenon at the time of getting on and off the vehicle, and requiring a grounding means such as a connecting cord or an earth belt. It is an object of the present invention to provide a method for producing an antistatic mat.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the invention according to claim 1 provides "a conductive sol such as carbon powder on a sol-like backing layer (12) applied on a mold (19). By spreading the conductive material (20), and placing the base cloth (14) on which the pile (17) containing the conductive fibers (16) is pierced to penetrate to the back side on the conductive material (20). The conductive material (20) and the conductive fibers (16) of the pile (17) are provided in contact with each other, and the mold (19) is heated in this state to gel the backing layer (12). "The method for producing an antistatic mat, which comprises holding the conductive layer (13) on the backing layer (12)" is the gist thereof.

(Example) Hereinafter, a method for producing an antistatic mat of the present invention will be described in detail according to an example shown in the drawings.

4 to 7 show the steps of producing the antistatic mat of the present invention, FIG. 4 is an enlarged sectional view showing a state in which a sol-like backing layer is applied on a mold, and FIG. 5 is a sol-like one. An enlarged cross-sectional view showing a state in which a conductive material is dispersed on the backing layer,
FIG. 6 is an enlarged cross-sectional view showing a state in which a pile-impregnated base fabric is placed on a backing layer, and FIG. 7 is an enlarged view showing a state in which the backing layer is gelated to hold a conductive layer on the backing layer. FIG.

First, as shown in FIGS. 4 and 5, a backing layer (12) made of a sol-like thermoplastic resin (vinyl chloride resin in this embodiment) is placed on a mold (19) capable of heating and cooling. Apply. Next, the backing layer (12) is semi-gelled by heating the die (19) directly from the bottom. Then, on the semi-gelled backing layer (12) powdery, granular or short fiber carbon,
Conductive materials (20) such as conductive ceramics and metals are sprinkled and laminated so that the conductive materials (20) are in contact with each other.

Next, as shown in FIGS. 6 and 7, the base cloth (14) is placed on the backing layer (12).

The base fabric (14) is made by cutting a non-woven fabric, a mesh, a nylon woven fabric or the like into a predetermined shape, and the non-woven fabric was used in this example. Multiple piles (17) on this base cloth (14)
As shown in FIG. 3, is punched into a substantially U-shape so as to penetrate to the back surface of the base cloth (14).

The pile (17) is composed of electrically non-conductive synthetic fibers, and by covering the entire front surface of the base cloth (14) with this pile (17), the base cloth (14) is in a state of being easily charged. . Therefore, when the human body comes into contact with the front side of the antistatic mat (11), the static electricity charged on the human body can be easily applied to the mat (1).
It will be grounded to 1). The pile to be driven (17) is made of synthetic fiber (15) such as polyamide fiber (17).
There are a) and a polyamide fiber containing a conductive fiber (16) (17b). Here, the pile (17b) containing the conductive fiber (16) is a synthetic fiber such as a plurality of polyamide fibers.
A plurality of carbon fibers, conductive ceramic fibers, metal fibers or other conductive fibers (16) are added to (15) and bundled, and these are twisted together and provided in a predetermined thickness. In this example, as the conductive fiber (16), a carbon fiber manufactured from an acrylonitrile-based polymer fiber was used. The pile (17b) thus configured has a conductive layer (1
Placed in contact with 3), the static electricity absorbed in the conductive layer 13 is discharged in the air through the conductive fibers 16 of the pile 17b. The base cloth (14) does not necessarily need to be infused with two types of piles (17a) and (17b), and may be infused with only the pile (17b) containing conductive fibers. The base fabric (14) thus obtained is placed so that the base ends of the piles (17) are inserted between the conductive materials (20) on the backing layer (12) and the conductive fibers ( 16) and conductive materials (20)
Contact with. At this time, the sol-like backing layer
The (12) comes to penetrate between the conductive materials (20). In this state, the mold (19) is directly heated from the back side and cooled to gel the backing layer (12) into a rubber-like state, and the conductive layer (13) is held on the backing layer (12). That is, the antistatic mat (11) is manufactured.

In the antistatic mat (11) thus obtained, as shown in FIGS. 1 to 3, the conductive layer (13) is held on the backing layer (12). The static electricity grounded on the pile (17) through the conductive fiber (16),
It is absorbed by the conductive layer (13) and discharges in the air through the conductive fiber (16) in contact with the conductive layer (13).

(Effects of the Invention) As described in detail above, in the method of manufacturing an antistatic mat according to claim 1, static electricity charged by a human body in a vehicle is instantly removed, and the discharge phenomenon is caused by getting on and off the vehicle. It is possible to obtain the antistatic mat which can eliminate the unpleasant feeling and which does not require the grounding means such as the connecting cord and the earth belt. Further, according to this method, it suffices to spray a conductive material during the backing step of the mat, and it is possible to manufacture an antistatic mat having a static electricity generation preventing function in a very simple manner.

[Brief description of drawings]

FIG. 1 is an oblique view showing an antistatic mat manufactured by the method of the present invention, FIG. 2 is an enlarged sectional view of the antistatic mat, and FIG. 3 is a portion surrounded by XY line in FIG. FIG. 4 to FIG. 7 show the manufacturing process of the antistatic mat of the present invention, and FIG. 4 shows an enlarged cross-sectional view showing a state in which a sol-like backing layer is applied on a mold. FIG. 6 is an enlarged cross-sectional view showing a state in which a conductive material is sprayed on a sol-like backing layer, FIG. 6 is an enlarged cross-sectional view showing a state in which a base cloth is placed on the conductive layer, and FIG. FIG. 8 is an enlarged cross-sectional view showing a state in which the backing layer is gelled to hold the conductive layer on the backing layer, and FIG. 8 is a perspective view showing a conventional antistatic mat. Explanation of reference numerals 11 ... Antistatic mat, 12 ... Backing layer, 13 ... Conductive layer, 16 ... Conductive fiber, 17 ... Pile, 20 ... Conductive material,

Front Page Continuation (72) Inventor Kohei Yamada 1682 Kitai, Kasamatsu-cho, Hashima-gun, Gifu Yamatouchi Co., Ltd. U)

Claims (1)

[Claims] 1. A conductive material (20) such as carbon powder is dispersed on a sol-like backing layer (12) applied on a mold (19), and conductive fibers are formed on the conductive material (20). A pile (17) including (16) is placed by placing a base cloth (14) that is punched in so as to penetrate to the back side, and the conductive material (20) and the conductive fiber (16) of the pile (17). Is provided in a contact state, and by heating the mold (19) in this state, the backing layer (12) is gelated and the conductive layer (13) is held on the backing layer (12). Manufacturing method of antistatic mat.