JP3054247B2 - Cushioning material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material and, more particularly, to a cushioning material which can be suitably used as a base when forming a golf putting green capable of keeping the surface flat.

[0002]

[Prior art and its problems] It has the property of quickly returning to its original state even if it is dented by the action of an external force in the thickness direction. The artificial grass that has been used is already known.

[0003] This artificial turf has an integrally formed turf portion at the top, and a plurality of ground portions of a predetermined size are laid below the turf portion. The base portion is formed by spreading a synthetic fiber mat, and placing a restoring member on the synthetic fiber mat.

[0004] The feel of a game on a golf putting green using the artificial turf is felt like a natural turf, and the rolling state of a golf ball is almost the same as that of a natural turf.

[0005] Incidentally, the above-mentioned restoring member has a drawback that it is difficult to manufacture a member having a large area. Therefore, when creating a large area putting green, many small-area restoring members are arranged on a synthetic fiber mat, and a heavy grass part is put on it, but fine positioning is performed. Therefore, when the grass part is pulled, the grass part is heavy, so the restoring member located under it also moves together, and the ends of the neighboring restoring members may overlap, or conversely, The restoring member separates, leaving a gap. As a result, undulations and grooves that are not suitable for play are formed on the surface of the turf, such as unevenness on the surface of the green, and the player may read the grass incorrectly or the golf ball may not be in an unexpected direction. This will have a considerable adverse effect on play such as rolling.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and is intended to be applied to a golf putting green which is free from unnatural angulation or grooves on the surface of the green. It is an object of the present invention to provide a cushioning material that can be suitably used as a part.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a synthetic fiber mat having water permeability and corrosion resistance. The synthetic fiber mat has a large number of air bubbles and can be quickly operated when an external force acts in the thickness direction. The present invention is attained by providing a cushioning material formed by fixing a restoring member formed of a foamed resin material having a property of deforming into a shape and slowly restoring the original shape into a water-permeable structure.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the structure of a golf putting green using the cushioning material of the present invention.

In FIG. 1, a golf putting green 1 is entirely composed of a turf portion 2, a synthetic fiber mat 3 serving as a base portion (buffer) and a restoring member 4. The turf section 2 has a water-permeable sheet 2a, and a large number of bristle feet 2b are planted on the sheet 2a. This hair 2
“b” imitates natural turf, and is formed in an elongated strip like green grass, and is colored green. The length of the bristle feet 2b is usually about 20 mm, but it can be set longer or shorter depending on the use or use condition. As the material, for example, nylon, polypropylene, or the like is used.

The sheet 2a is formed in a thin flat plate shape, is made of a material such as synthetic rubber, and has a thickness of about 3 mm. A large number of drain holes (not shown) are formed in the sheet 2a to impart water permeability, and water collected on the upper surface of the grass portion 2 through the drain holes due to rain, water sprinkling, or the like. It is designed to transmit more downward.

The synthetic fiber mat 3 has a thickness t, for example.
1 is about 10 mm, which is a nonwoven fabric made of polyester fiber and has excellent water permeability and corrosion resistance. For this reason, the water permeating from the upper layer, the turf portion 2, can be drained further downward, so that even if the water is immersed for a long period of time, it does not corrode.

The resilient member 4 is a sheet-like member fixed below the synthetic fiber mat 3 and formed by laminating a foamed resin material 4a in a mesh shape and welding the intersections thereof.

The foamed resin material 4a is a rod-shaped foamable polypropylene, which has the property of being quickly deformed when an external force acts in the thickness direction and slowly restoring to its original shape. The foamed resin material 4a is formed by laminating rod-shaped foamable polypropylenes in a mesh shape and welding the intersections thereof, so that the water that has passed through the drain holes of the turf portion 2 can be transmitted further downward. it can. Also,
The foamed resin material 4a suppresses the bouncing of the ball dropped on the turf portion 2 by the cushioning action, and can reduce the load applied to the player's feet and waist.

The thickness t2 of the restoring member 4 is about 10 when used for a golf putting green as in this embodiment.
It is set to about mm, but this dimension will be changed according to the resilience of the ball used in the competition and the content of the competition. Note that, as the restoring member 4, a material having a cushioning property and a sheet-like body made of paper or white hair can be used.

The restoring member 4 and the synthetic fiber mat 3
When using a thinner-based adhesive, a material such as polypropylene may be damaged. Therefore, it is preferable to use a thinner-based adhesive and bond with a water-based adhesive or an adhesive. When an adhesive is not used, welding may be performed by heat. At the factory, for example, about 6
It is also possible to stick about three sheets of the resilience member 4 of 0 cm square side by side, one by one, and to make it roll and ship it as a product such as a base unit of artificial turf.

Thus, the green can be easily formed by spreading the ground unit of the artificial turf on a flat land and covering it with the artificial turf. When the greens are formed by laying the base units without gaps, it is preferable that adjacent base parts are held together by holding means such as a stapler or the like, and the turf part 2 is placed thereon. . In some cases, the base units may be used in a double or triple overlapping manner.

Although the above-described example has been described for the case of using the golf putting green 1, the cushioning material of the present invention can also be used as a cushioning material for packing and packing.

[0018]

As described above in detail, according to the present invention, the cushioning material serving as the base of the putting green is formed by fixing the restoring member and the synthetic fiber mat by bonding, and the restoring property is improved. Since the member is located under the synthetic fiber mat, the restoring member does not move with the movement of the artificial turf. As a result, it is possible to obtain a cushioning material that can prevent the generation of unnatural angulations and grooves on the green surface. In addition, it is possible to obtain a cushioning material useful for forming a putting green capable of improving the weather resistance because the gap existing between the meshes of the restoring member performs a heat insulating action.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of a golf putting green using a cushioning material of the present invention.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Golf putting green 2 Turf 2a Seat 2b Hair 3 Synthetic fiber mat 4 Restoring member 4a Foam resin material t1 Thickness t2 Thickness

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A63C 19/00 A63B 69/36 511 E01C 13/00

Claims (4)

(57) [Claims] 1. A water-permeable and corrosion-resistant synthetic fiber mat is provided, and rod-shaped foamable polypropylene is laminated in a mesh form.
Combined its intersection formed by熔着, to secure the recovery Motosei member you restored quickly deformed and slowly original shape when an external force in the thickness direction is applied to the lower surface of the synthetic fiber mat A cushioning material characterized by being formed by: 2. The cushioning material according to claim 1, wherein said synthetic fiber mat is a non-woven fabric made of polyester fibers. 3. A process according to claim 1 also has the resilient member and the synthetic fiber mat is formed by fixing with an adhesive or 熔着
Is the cushioning material according to 2 . 4. The cushioning material according to claim 3 , wherein the adhesive is a water-soluble adhesive.