JPH07158008A - Artificial lawn - Google Patents

Abstract

PURPOSE:To permanently maintain antistatic effect by laying conductive fiber on the surface of a base substance, which has numerous foliated pieces embedded thereon, and fixing at least two places of the conductive fiber on the base substance by means of melting the base substance. CONSTITUTION:A conductive fiber 4 composed of a carbon fiber is laid on the surface of a base substance 2 for a artificial lawn 1 made of thermoplastic resin. At least two places in the space left between the fibers 4 are fixed to the base substance 2 by partially melting the base substance 2. The erecting foliated pieces 3 are then deformed in curls by heat. Static electricity electrified on a shoe sole is discharged by the fiber 4 so as not to have the static electricity accumulated on a pedestrian exceeding a specific value. Thus, the conductive fiber can be prevented from floating due to wind and rain or the like and the discharge effect can be maintained for a long period because the conductive fiber is embedded in the base substance and securely fixed thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial lawn, and more particularly to an artificial lawn having an antistatic property.

[0002]

2. Description of the Related Art Generally, it is known to mold an artificial lawn with a thermoplastic resin such as polyethylene, polypropylene or EVA. This artificial lawn is composed of a substrate and a large number of leaf-like parts that are planted on the surface of the substrate. After the substrate and the leaf-like parts are integrally molded, the leaf-like parts are curled to give the appearance of a natural lawn. There is.

In order to discharge static electricity charged on the human body, specifically, the soles of shoes through such an artificial lawn, it has been proposed to dispose conductive fibers on the surface of the substrate of the artificial lawn (for example, in practice). (See Japanese Kokoku 55-36561).

[0004]

However, the above-mentioned antistatic artificial lawn has only the conductive fibers crawling on the surface of the substrate, and has a difficulty in maintaining the antistatic effect. That is, there is a problem in durability such that the conductive fiber floats above the leaf-like portion due to use and is caught by the tip of the foot, and is easily lost by wind and rain.

The present invention has been made in view of the above problems and provides an artificial lawn capable of permanently maintaining the antistatic effect.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a substrate, a large number of leaf-shaped portions that are planted on the surface of the substrate, and a substrate that is laid on the surface of the substrate by passing between the leaf-shaped portions and melted. It is characterized in that it is made of a conductive fiber fixed at least at two places through the.

[0007]

Function The static electricity charged on the sole of the shoe is discharged to the conductive fiber laid on the artificial lawn. At this time, since the conductive fibers are prevented from being fixed and separated from at least two places via the melted substrate, the antistatic effect can be permanently maintained.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an artificial lawn 1. The artificial lawn 1 is composed of a base 2 and a large number of leaf-shaped portions 3 planted on the surface of the base 2, and is made of polyethylene, polypropylene or EVA. It is molded from a thermoplastic resin such as. Then, on the surface of the base body 2, conductive fibers, for example, carbon fibers 4 are laid so as to pass between the leaf-shaped portions 3 and 3, and the base body 2 is partially melted at least at two places at intervals. It is fastened.

Specifically, when the leaf-shaped portion 3 of the artificial lawn 1 is upright, the carbon fiber 4 is attached to the leaf-shaped portion 3, 3 of the carbon fiber 4.
After laying on the surface of the substrate 2 through the gaps, two heaters H arranged at intervals are lowered so as to press the carbon fibers 4 (see FIG. 2A), and the substrate 2 is partially And the carbon fibers 4 are buried in the molten resin. In this case, it is preferable that the heater temperature is set in a temperature range in which the viscosity becomes lower than the melting point of the material of the substrate 2. After that, if the heater H is raised, the resin is cooled,
The carbon fibers 4 are embedded and fixed in two places in the base body 2 at intervals (see FIG. 2B). Next, the upright leaf-shaped portion 3 is thermally deformed and curled to manufacture the artificial lawn 1.

In the embodiment described above, the base 2
Although the carbon fibers 4 laid on the surface of the base 2 are fixed to the surface of the base 2 as an example, both ends thereof may be fixed to the side surface or the back of the base 2.

As a result, the static electricity charged on the shoe sole is discharged to the carbon fiber 4 laid on the artificial lawn 1, so that the static electricity is not accumulated in the pedestrian for a certain amount or more. Since the carbon fibers 4 are firmly fixed to the base 2 and do not float up due to wind and rain, the discharge effect of static electricity can be maintained for a long period of time. Further, since the base 2 is melted by the heater H and the conductive fibers 4 are fixed thereto, there is an advantage that work can be performed using simple equipment.

In this embodiment, the conductive fiber 4
Although a carbon fiber having heat resistance is adopted as the above, a metal fiber can also be used.

When fixing the conductive fibers 4 to the base 2, as shown in FIG. 3, a plurality of build-ups are formed on the base 2 with a space so as to define both sides on which the conductive fibers 4 are laid. If the portion 21 is formed in advance and the built-up portion 21 is melted by the heater H, the conductive fiber 4 can be surely embedded in the base 2.

Further, in the present embodiment, the case where the conductive fiber 4 is fixed to the short unit type artificial grass 1 by the injection molding method has been described. It is also possible to fasten the sex fibers.

[0016]

As described above, according to the present invention, the conductive fibers laid on the surface of the substrate passing between the leaf-shaped portions constituting the artificial lawn are fixed at least at two positions through the molten substrate. As a result, the conductive fiber is embedded in the substrate and securely fixed, does not float up due to rain or wind, and the discharge effect can be maintained for a long period of time.

[Brief description of drawings]

FIG. 1 is a perspective view showing an artificial lawn of the present invention with a part thereof omitted.

FIG. 2 is a cross-sectional view illustrating a step of fixing conductive fibers to artificial grass.

FIG. 3 is a cross-sectional view illustrating another step of fixing conductive fibers to artificial grass.

[Explanation of symbols]

 1 Artificial lawn 2 Base material 3 Leaf-shaped part 4 Conductive fiber (carbon fiber)

Claims (1)

[Claims] 1. A substrate, a large number of leaf-shaped portions planted on the surface of the substrate, and a plurality of leaf-shaped portions laid on the surface of the substrate passing through these leaf-shaped portions, and fastened at least at two positions via a molten substrate. An artificial lawn, which is characterized by being composed of a conductive fiber.