JPH03170177A - Floor material for golf training range - Google Patents

Abstract

PURPOSE:To obtain the elasticity approximate to the elasticity of natural lawn simply by laying the floor material on concrete by laminating a surface material on a base layer consisting of a foamed material having specific repulsive elasticity, density and hardness. CONSTITUTION:The foamed body to constitute the base layer to be laminated with the surface material thereon is made of the foamed material having <=25% repulsive elasticity at 20 deg.C, 0.1 to 0.5g/cm<3> density and <=50 deg. hardness by SRIS. This material is exemplified by foamed rubber or urethane sponge, etc. Sufficient impact absorbing performance is not obtainable if the repulsive elasticity at 20 deg.C exceeds 25%. The weight increases if the density exceeds 0.5g/cm<3>. The impact absorbing performance and strength are insufficient if the density is below 0.1g/cm<3>. The impact absorbing performance is insufficient if the hardness by the SRIS exceeds 50 deg.. The thickness of the base layer is preferably >=2mm and above all, 10 to 20mm. A non-woven fabric, etc., are used in addition to the surface material of the artificial lawn, etc., as the surface material. The surface material may be simply superposed on the base layer or may be adhered by an adhesive agent or pinned thereto.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a flooring material for a golf driving range, which is particularly suitable for use as a flooring material for the fairway or batting area of a golf driving range, and has improved rebound of golf balls. The present invention relates to flooring materials for golf driving ranges.

[Conventional technology] Traditionally, most golf driving ranges do not use natural grass, but artificial flooring materials such as artificial grass and needle bunch, which are easy to maintain and have excellent durability, are used as surface materials. There is.

These surface materials are laid directly around the batting area or on the concrete surface of the fairway or batting green.

[Problems to be solved by the invention] When a surface material such as artificial turf or needle punch is laid directly on concrete, when a golf ball is hit, the momentum is too strong, resulting in the following drawbacks: there were.

■ There is a risk of a ball bouncing off and hitting a player in the small practice area.

■ The way the ball bounces is very different from natural grass, so it feels different for players than on an actual golf course.

■ The ball collides strongly, causing severe damage to the ball. That is, the color of the surface material transfers to the ball, or the ball is physically damaged, resulting in premature deterioration of the ball.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a floor material for a golf driving range that has elasticity close to that of natural grass.

[Means for Solving the Problems] The golf driving range flooring material of the present invention has a rebound resilience of 25% or less at 20°C, a density of 0.1 to 0.5 g/cm', and a hardness of 506 by SRI S. It is characterized in that a surface material is laminated on the following foam.

The present invention will be explained in detail below.

In the present invention, the foam serving as the base layer on which the surface material is layered has a rebound resilience of 25% or less at 20°C;
Preferably 15% or less, density O, 1 to 0.5 g/c
IT1'' and SRIS hardness of 50° or less, preferably 30'' or less. Examples of such foams include foamed rubber and urethane sponges. 100 parts by weight of a polymer consisting of O to 40% by weight of other rubber components; ■ 30 to 300 parts by weight of filler; ■ 5 to 100 parts by weight of plasticizer; ■ 0.5 to 30 parts by weight of blowing agent. A low resilience rubber foam obtained by adding a vulcanizing agent and a vulcanization accelerator to a mixture consisting of , and vulcanizing and foaming the mixture is preferred.

If the impact resilience of such a foam at 20°C exceeds 25%, the resulting floor material will not have sufficient impact absorption performance.
Further, if the density exceeds 0.5 g/cm3, the weight of the resulting floor material becomes heavy, and if the density is less than 0.1 g/crn', the impact absorption performance and strength will be insufficient. If the SRIS hardness exceeds 50°, the shock absorption performance will be insufficient. In addition, the hardness by SRI S refers to the Asker C type hardness tester (
This is the hardness determined by hardness measurement according to Japan Rubber Association Standard 0101).

In the present invention, the thickness of the base layer made of such a foam is preferably 2 mm or more, particularly 10 to 20 mm.

The surface material to be laminated on the base layer made of foam is usually artificial turf, which is used in golf driving ranges, etc.
In addition to surface materials such as needle punches, nonwoven fabrics, cloth, vinyl sheets, etc. can be used. These surface materials may be simply layered on the base layer made of the above-mentioned foam, or may be bonded with a suitable adhesive or joined with fixing devices such as pins, nails, etc. to be integrated. .

The flooring material for a golf driving range of the present invention can be simply laid on concrete, soil, etc. according to a conventional method, and has excellent workability.

[Function] The golf driving range flooring material of the present invention has a surface material laminated on a base layer made of a foam having a specific impact resilience, density, and hardness. By simply laying the flooring material on concrete, the foam base layer provides an appropriate level of elasticity similar to that of natural grass, ie, ball rebound.

[Example] The present invention will be described in more detail by giving Examples and Comparative Examples below.

Example 1.2 Artificial turf (4 mm thick) was bonded as a surface material onto a base layer (15 mm thick) made of styrene-butadiene copolymer foam having the physical properties shown in Table 1. A golf driving range flooring material of the present invention was manufactured.

This floor material for a golf driving range was laid on concrete, and a golf ball was allowed to fall naturally from a height of 21 m, and the height of rebound was measured. The results are shown in Table 1.

Comparative Example 1 The bounce height of a golf ball was measured in the same manner as in Example 1 by laying artificial turf directly on the concrete without using a foam base layer. The results are shown in Table 1.

From Table 1, it is clear that the golf driving range flooring material of the present invention can provide an appropriate rebound.

Table 1 *2: Japan Rubber Association Standard 0101 [Effects of the invention] As detailed above, the golf driving range flooring material of the present invention:
It has moderate elasticity and ball rebound characteristics similar to natural grass, so you can practice safely by preventing the risk of a golf ball hitting players, floors, walls, etc. due to excessive bounce. Can be done.

■ Provides a feel similar to that of natural grass, improving practice effectiveness.

■ Damage to the ball is prevented. Moreover, damage to the flooring material side is also prevented.

Excellent effects such as is obtained. Moreover, the golf driving range flooring material of the present invention can be simply laid on concrete or soil, and has excellent workability.

Claims (1)

[Claims] (1) Impact resilience at 20°C is 25% or less, density is 0
．． 1~0.5g/cm^3, hardness by SRIS is 5
A flooring material for a golf driving range, characterized in that a surface material is laminated on a foam having an angle of 0° or less.