JPS63293202A - Method for maintenance of turf leaves of sand-containing artificial turf - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for maintaining turf leaves of sand-containing artificial turf that has been used for a certain period of time.

Traditionally, sand-filled artificial turf has been widely used for the floors of sports facilities such as tennis courts, golf courses, and track and field stadiums. As shown in Figure 5 (a), artificial turf d consisting of grass leaves C planted on a backing sheet b is laid on the ground a as a base, and sand e is filled between the artificial turf d. However, when the artificial turf is used for a certain period of time for competitions, the upper part of the artificial turf leaves is agitated by shoes, spikes, etc., causing it to collapse in one direction, and as shown in Figure 5 (b). As the fallen grass blade part breaks into thin pieces, the sand grains are also crushed and become fine powder, and this pulverized sand and the fallen grass blade part solidify and become a floor surface that is similar to normal soil surface, and the original It no longer functions properly. Therefore, in order to repair this condition, conventionally, a so-called coat brush, that is, a brush made of natural or artificial materials such as fern or nylon, was used to scrub the hardened floor surface back and forth using manual or mechanical power. The method used was to dig up the fallen grass leaves.

(Problems with the prior art) However, in the above prior art, the base material on which the brush bristles are flocked is made of inelastic wood, metal, etc. It does not absorb well and requires a considerable amount of force to scrub back and forth with the brush in order to obtain a repair effect, and the material of the brush itself is too soft and is not suitable for digging up grass leaves or hardened sand surfaces. This had the disadvantage that the brush skidded on the hardened floor surface, making work difficult.

(Means for Solving the Problems) The present invention has been made to solve the drawbacks of the prior art such as ridges, and uses a base material having elasticity and toughness.
The needles, which are made of an elastic and tough material and have a diameter of not more than 1 mm, are used to raise sand using a lawn blade raising device with a needle cloth that is planted at a higher density than the planting density of the lawn. This is a method for maintaining the leaves of sand-filled artificial turf, which is characterized by abrading the surface of the sand-filled artificial turf.

In the present invention, the base material having elasticity and toughness is a sheet made of a material with high elasticity such as a raw rubber sheet or a vulcanized rubber sheet, with a reinforcing sheet attached to the back side.
If this elasticity is poor, the needle will have to rely on the elasticity of the needle alone to obtain a repair effect, and the needle will not adapt to the irregularities of the floor surface sufficiently, and there is a risk of damaging the grass blades or breaking the needle.

In addition, the base material must have sufficient toughness to support the needle, and preferably has a strength of 150 kg/cm or more and an elongation of 10% or less.
Further, the overall thickness is preferably about 1 to 10 mm.

The needle of the present invention is not suitable for scraping work because if the abdomen of the needle hits the floor instead of the tip, it will not be possible to raise fallen grass leaves or dig up sandy surfaces. It must have sufficient toughness and elasticity, for example, hard steel wire (SWRH57) with a diameter of 1 ms+ or less, preferably 0.2
~0.5- is good, and it is ideal that it is as thin and hard as possible, and its length is preferably about 10 to 20 na+.

In the present invention, when planting needles on a base material such as on a ridge, the density of the needles must be higher than that of the lawn, Standing density refers to the vertical and horizontal planting density of grass leaf plants that are raised from the backing sheet, and is usually 3.2 plants/plant in the horizontal direction.
In, the vertical direction is 6 plants/in. Therefore, the clothing used in the present invention needs to be planted at a higher density than the planting density of the grass leaf plants in the vertical and horizontal directions.If this condition is not satisfied, Even with abrasion work, the grass leaves tend to become uneven and leave unrepaired areas. Therefore, usually
A density of 20 to 30 lines/cm is preferable.

Further, in order to implant the needles into the base material, it is preferable to implant the needles as shown in FIG. 1 or FIG. 2. That is, in FIG. 1, 1 is a base material, and the needle 2 is inclined at a certain angle α with respect to the base material 1, and this angle is between 45 degrees and 70 degrees.
The clothing 3 is thus formed. Also, the first
As shown in Figure (b), in order to plant needle 2 on base material 1, each needle must be placed independently, as in the case where one needle material is folded in a U-shape. It is preferable that the needles are planted in the base material in a state similar to that of a normal brush, in which many hairs are planted as a single plant, which is not preferable because the rubbing effect is uneven.

In addition, as another example of the planting needle, as shown in Fig. 2, the base material 1
On the other hand, it is also suitable that the needle 2 is formed into a dogleg shape and is implanted therein.

The lawn leaf raising device according to the present invention will be explained with reference to FIGS. 3 and 4. In these figures, reference numeral 4 denotes a lawn blade raising device, and normally, as shown in FIG. Pattern 6
may be attached so that it can be used manually. In this case, the width W is usually preferably about 90 to 150 c11+. Further, the long needle cloth 3 as shown in FIG. 1 or 2 is spirally wound around a suitable roll-shaped core material 7 as shown in FIGS. 4(a) and (b). and connect it to a power source 8 such as a motor and a car 9 as shown in the same figure (c).
, etc., and a bearing 1 is attached to the trolley 10.
1, and the bearing 11 may be connected to a vertical position adjustment tool 12 which is operated by a handle.

(Function) The method for repairing the grass blades of sand-containing artificial turf according to the present invention is to attach needles made of an elastic and tough material and having a diameter not exceeding lllll11 to a base material that has elasticity and toughness. , a lawn blade raising device with needle cloth planted at a higher density than the grass planting density was used to scrape the surface of the sand-containing artificial turf, thereby removing uneven surfaces that required repair. It adapts well to the floor surface, the needle tip reaches the base of the grass leaf plant, and the felt-like grass leaves can be loosened, raised, and even dug up the sand surface evenly and reliably. If sand is replenished, as shown in Figure 5 (c), although it is impossible to repair the cracked part of the tip of the grass blade, the grass will be restored to a state close to its original shape.

Examples of the present invention will be described below.

(Example 1) i) Creation of artificial turf 7600 D polyethylene split yarns were placed on a polypropylene backing sheet at a rate of 3.2 yarns/in in the lateral direction.
[The fibers were implanted so that the total thickness was 20111In with a density of 6 directions.

ii) Creation of a lawn leaf upright tool A rubber sheet with a strength of 100 kg/cm is used as the base material, and a needle made of a hard steel wire with a diameter of 0.36 is tilted at 75 degrees with respect to the base material. So, the density is 155/
Plant the needles so that they are in.

ii) Scratching test The sample was lightly rubbed 5 times. Although the rubbing direction was in a direction that did not go against the direction of inclination of the needle, the grass blades stood up as expected, and there was almost no damage to the grass blades.

(Example 2) i) Creation of artificial grass Same as Example 1.

ii) Using a felt sheet with a thickness of 5 mm as the base material for creating a lawn blade upright tool,
Needles made of a hard steel wire rod with a diameter of 0.26 and bent into a dogleg shape were implanted into this at a density of 130 needles/in.

111) Scratch test The sample was lightly rubbed twice in the direction opposite to the stitches. The grass leaves stood up as expected, and the effect was greater than in Example 1.

(Effects) The artificial turf blade maintenance method of the present invention is to attach needles made of an elastic and tough material and having a diameter not exceeding 1 mm to a base material that has elasticity and toughness. We adopted a method of scraping the surface of the sand-containing artificial turf using a turf leaf raising device with a needle cloth planted at a higher density than the planting density of It adapts well to the surface, and the tip of the needle reaches the base of the grass leaf plant without fail, and the felt-like grass leaves can be kneaded and raised, and even the sand surface can be dug up evenly and reliably, improving work efficiency. It is excellent.

[Brief explanation of drawings]

FIG. 1 shows an example of the clothing used in the method of the present invention, and FIG. An enlarged sectional view, FIG. 2 is a perspective view showing another example of the same clothing, FIG. 3 is a perspective view showing an example of a lawn blade raising tool used in the method of the present invention, and FIG. 4 is another example of the same as above. Figures (A) and (B) are a front view and a side view of the clothing wrapped around a core material in the form of a roll, and (C) is a front view and a side view of the clothing wrapped around the core material in the form of a roll. A front view showing another example of a turf leaf raising tool formed by wrapping a core material of A diagram showing the state after the period has elapsed, and (c) of the same diagram is a diagram showing the state repaired by the method of the present invention. 1 is a base material, 2 is a needle, 3 is a needle cloth, and 4 is a grass blade raising tool.

Claims (1)

[Scope of Claims] 1. Needles made of an elastic and tough material and having a diameter of not more than 1 mm are placed on a base material that has elasticity and toughness and have a higher planting density than the lawn planting density. A method for maintaining turf leaves of sand-containing artificial turf, which comprises rubbing the turf surface of the sand-containing artificial turf using a turf-leaf raising tool having densely seeded needle cloth. 2. The sand-containing artificial turf according to claim 1, wherein the turf leaf raising device has a cloth attached to the surface of a roll-shaped core material and is rotatable around the axis of the core material. How to maintain your lawn. 3. The method for maintaining grass leaves of sand-containing artificial turf according to claim 1, wherein the needles of the needle cloth in the grass leaf raising device are individually implanted into the base material one by one. 4. The method for maintaining grass blades of sand-containing artificial turf according to claim 1, wherein the upper part of the needle of the cloth in the blade raising tool is inclined at a certain angle.