JPH04158872A - Teeing-up mat for golf - Google Patents

Abstract

PURPOSE:To enable a ball to be teed up and mitigate a shock of a golf club striking a golf mat by laminating artificial lawn on a base plate of foamed bead molding of polyolefin-based synthetic resin having specified density and average grain diameter of the bead. CONSTITUTION:A base plate 1 is composed of a foamed bead molding of polyolefin-based resin. The average grain size of the foamed beads in the foamed bead body composing the base plate 1 should be 2-6mm and preferably 3-5mm. Also, the density should be 0.092-0.034g/cm<3> and preferably 0.067-0.05g/cm<3>. The base plate 1 is preferably formed with drip holes 3 vertically extending therethrough to prevent rain water from being accumulated on artificial lawn 2. The artificial lawn 2 is mounted on the base plate 1 with an adhesive for example.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a golf tee-up mat used as a substitute for a grass surface at, for example, a golf driving range or a teeing ground of a golf course.

[Prior Art] Conventionally, golf mats have been known in which artificial turf is attached to a substrate made of a foam such as polyurethane (Utility Model Publications No. 58-98968 and No. 58-63205).

This golf mart 2t allows you to tee up a pole by inserting a tee into the foam substrate from above the artificial turf, and also allows the club head to be used for golf golf when practicing irons that involve hitting off the turf. The foam substrate cushions the impact of hitting the mat, reducing the strain on wrists, elbows, etc. during repeated exercises and preventing arthritis.

[Problems to be Solved by the Invention] However, the conventional golf mat described above has the following problems.

(1) The foam substrate used in conventional golf mats is an extruded foam molded product, and when a tee is inserted into the extruded foam molded product, the cells in that area are destroyed, leaving the hole where the tee was removed. As the number of holes in this tee increases, it becomes difficult to tee it up stably, so the lifespan of repeated use is short.

(2) Normally, this golf mat is large enough for a person to sit on it and swing, but since the cells of the extruded foam substrate are easily destroyed, the spikes are not strong and the foothold feels like dirt. and release. In addition, since the cells are destroyed by the spikes, the substrate tends to sag and the scaffold becomes unstable, which also shortens the life of repeated use.

(3) When the substrate of an extruded foam molded product is hit by a club head, the cells may buckle or break and become flat.
This tends to cause a decrease in shock absorption capacity, which is also a cause of shortening the life of repeated use.

[Means for solving the problems] The means taken in the present invention to solve the above problems are as follows:
To explain with reference to FIG. 1, which corresponds to one embodiment of the present invention, in the present invention, a golf mat mainly made of synthetic resin bead foam has a density of 0.092 to 0.034 g/cm3.
, A golf tee-up my having a layered structure in which artificial turf 2 is laminated on a substrate 1 of a polyolefin synthetic resin bead foam molding with beads having an average particle diameter of 2 to 6 mm.
The company is taking steps to ensure that the

[Function] First, it is a polyolefin resin foam with a density of 0.092 to 0.034 g/Cm3.

Due to its characteristics as a material, it provides the necessary stiffness and appropriate elasticity for the substrate 1. Therefore,
In particular, in the present invention, the bead foam molded product is resistant to cracking and chipping and exhibits excellent shock absorption ability, but this makes it difficult to break the cells due to being punctured by a tee or being stepped on by golf shoes. is to be prevented.

In the case of a bead foam molded product, the foamed beads each having a skin are joined together to form a molded product, and when a tee is pierced into this, in many cases, rather than piercing the foam beads, the foamed beads are The tee is inserted through the joint between the two.

This is because it is easier for the tee to penetrate by peeling between the foam beads than by penetrating the skin where W is strong and difficult to tear.
It is based on the fact that the intrusion direction of the tee is guided in this direction, and the material is made of strong polyolefin resin, and the density is 0.092~0.034 g / c
The fact that the foam beads have appropriate elasticity at m3 and the diameter of the foamed beads is relatively small at 2 to s mm facilitates this type of piercing form of the tee.

When the tee is inserted as described above, the foam beads near the inserted tee are compressed and deformed, but
Each foam bead itself is hardly damaged, so after pulling out the tee, the foam bead will elastically return and the hole in the tee will be repaired to some extent, so the hole in the same tee will be repaired to some extent. Even if you insert the tee again into the hole, you can tee it up securely, and
The damage caused by the puncture of the tee is minimal.

The above-mentioned effect is not only exerted when hitting the tee, but also when stepping on it with golf shoes, so
Not only does the spike have a good feel, but it also provides excellent resistance to repeated trampling.

Furthermore, because each foam bead is covered and protected by a skin, the cells are less likely to break when struck by a club head, and therefore are less likely to collapse even after repeated strikes. .

[Example] FIG. 1 is a longitudinal sectional view of a tee-up mat for golf according to an example of the present invention.

In the figure, 1 is the substrate and 2 is the artificial turf.

The substrate 1 is made of a bead foam molded product of polyolefin resin. Examples of the polyolefin resin include polyethylene, polypropylene, and copolymers containing these as main components (containing 50% by weight or more).

The average particle size of the foamed beads of the bead foam constituting the substrate 1 must be 2 to 6 mm, preferably 3 to 5 mm.
It is m. If the diameter of the foamed beads is too small, it will be difficult to obtain the necessary elasticity, and sufficient shock absorption power will not be obtained.
On the other hand, if it is too large, the foam beads will be easily penetrated by tees or spikes. Also, the density is 0.092 to 0.0
It needs to be 34g/cm3, preferably 0.0
It is 67 to 0.05 g/cm3.

If the density is too low, it will become too hard and sufficient shock absorption power will not be obtained; if the density is too high, it will become too flexible, resulting in unstable footing and insufficient durability.

The bead foam that makes up the substrate l has a compressive strength of 0.9 to 3.1 kg/cm2 so that it can sufficiently absorb the impact from the club head and will not crack or chip when hit.
, especially 1.0 to 2.5 kg/cm2, tear strength of 1, 8 to 5, 5 kg/cm, especially 2.0 to 5.0 k
It is preferable that it is g/cm.

The skin of each foam bead in the bead foam is preferably thick so that it cannot be easily penetrated by tees or spikes, specifically, the skin layer has a higher density than the inner density. With a skin of such thickness, it is difficult for tees and spikes to penetrate through the skin, making it easier for the tees and spikes to be guided between the foam beads, and to prevent damage caused by hits from the club head. Cell breakage of each foamed bead becomes less likely to occur.

The thickness of the substrate 1 is preferably 10 mm or more from the viewpoint of imparting shock absorbing power, maintaining the strength of the entire substrate 1, and preventing it from sagging.The upper limit can be set freely within the range that can be formed. For practical purposes, a length of up to about 80 mm is sufficient. In the case where a particularly thick substrate 1 is used, it is possible to bury the substrate 1 in the soil and position it in the ground to prevent it from shifting and to use it without feeling out of place with the surroundings. In particular, since the substrate 1 of the present golf tee-up mat is a bead foam molded product, it has the advantage that a large thickness can be easily obtained.

Particularly when this golf tee-up mat is used outdoors, it is preferable to form drainage holes 3 that pass through the substrate 1 from above and below to prevent rainwater from accumulating on the artificial turf 2.

The artificial grass 2 in this golf tee-up mat is not particularly limited, but it is preferably one with excellent impact resistance, abrasion resistance, etc. Specifically, for example, Lonturf (trademark: Asahi Kasei Corporation) (manufactured by), etc.

The artificial grass 2 can be attached onto the substrate l using, for example, an adhesive or the like.

[Effects of the Invention] The present invention is as described above, and has the following effects.

(1) Tee-up can be performed repeatedly and stably at the same location, and it is resistant to deterioration even when repeatedly hit by club heads or stepped on by golf shoes, resulting in a long repeated use life.

(2) The spikes have a good feel and feel similar to soil.

(3) Since it has high shock absorption ability, it reduces the burden on wrists and elbows when practicing with irons, and prevents arthritis.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a tee-up mat for golf according to an embodiment of the present invention. Substrate 2 2 Artificial grass 3: Drain hole

Claims (1)

[Claims] 1) In a golf mat mainly made of synthetic resin bead foam, the density is 0.092 to 0.034 g/cm^3,
A golf tee-up mat having a layered structure in which artificial turf is laminated on a substrate made of polyolefin-based synthetic resin bead foam moldings with beads having an average particle diameter of 2 to 6 mm.