JP2995517B2 - Cushion material for riding ground and riding ground using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion material for a riding ground, and more particularly to a cushioning material suitable for a riding ground where horses frequently run, such as a racetrack, a breeding ground, a pasture, and a training course, and a riding ground on which it is laid. About.

[0002]

2. Description of the Related Art Conventionally, natural sand has been laid as a cushion material on a roadbed in a variety of riding grounds such as a dirt course of a racetrack. Baba using this natural sand is preferred as a suitable buff for horse exercise because of its moderate cushioning and foothold, and it has excellent drainage if sufficient daily maintenance is performed. .

However, the Baba using natural sand has the following disadvantages. 1) For the exercise of horses with bad feet, the cushioning property is not sufficient on the ground using natural sand. (Baba with wood chips is used instead. However, it has problems such as poor foothold.) 2) Moisture content of cushion sand during dry season such as summer when temperature rises Water drops sprinkle water to impede smooth running and impair the visibility of sand and horses, causing problems such as accidents. 3) In the rainy season such as rainy season, rainwater exceeding the drainage capacity of natural sand causes water to float on the surface of the cushion sand, impairing smooth running due to poor foothold, and obstructing human and horse visibility due to mud splashes. Since problems such as the occurrence of accidents occur, it is necessary to work to prevent such problems by working such as water absorption and harrowing. 4) In the cold season, gravity water and adsorbed water between sand particles freeze,
Since the cushion sand freezes, it not only hinders the exercise of the horse, but also involves the risk of falling over, so exercise and competition must be stopped. To prevent this freezing,
A great deal of cost and labor is required, such as spraying salts such as calcium chloride or harrowing all night.

[0004] In order to improve these problems in a baba using natural sand, asphalt,
BACKGROUND ART Baba cushion materials (for example, JP-A-2-274905) made of sand coated with a composition comprising vegetable oil and titanium fine powder having a surface area of 3000 cm ² / g or more are known.

[0005]

However, even if this improved type cushion material is used, the durability and the like are still insufficient. In other words, sand particles in the cushioning material are gradually destroyed by the impact of daily movements or the like, and asphalt or vegetable oil flows out, the cushioning property of the cushioning material is deteriorated, or the broken fine particles are cushioned. There is a problem that the drainage performance deteriorates due to accumulation on the roadbed under the material.

[0006]

SUMMARY OF THE INVENTION The inventor of the present invention has further improved durability against impacts such as exercise, has good cushioning properties, has a good foothold, has excellent drainage properties, and is influenced by weather conditions. As a result of earnestly studying to obtain an all-weather type cushioning material for a riding ground and a riding ground using the same,
The present invention has been reached. That is, the present invention comprises sand coated or mutually bonded with a component comprising at least one non-olefin water-insoluble synthetic resin selected from silicone-based and urethane-based resins and an oil, and having water permeability. A cushion material for a riding ground and a riding ground laid thereon.

The sand used in the present invention is not particularly limited, and may be natural sand such as river sand, mountain sand, sea sand, or crushed sand. The particle size and shape of the sand are not particularly limited, but it is preferable to select the sand so that the bulk density of the cushion material falls within a predetermined range as described later. The water content of the sand is not particularly limited.

In the present invention, the water-insoluble synthetic resin only needs to be water-insoluble in the state of the resin constituting the cushion material, and examples thereof include silicone-based and urethane-based resins.
The form of the water-insoluble synthetic resin when sand is processed is not particularly limited, and may be a liquid or solid resin itself, or may be diluted as a resin emulsion, a resin solution, or the like. In addition, any type such as thermoplasticity, two-component normal temperature reaction type, moisture curing type, and thermosetting type may be used.

The following is an example of each of the above resins depending on the form in which sand is processed. Silicone resin: Silicone resin emulsion, room temperature curing type silicone resin, etc. (100% solid or resin solution) Urethane resin: Moisture curing type polyurethane (100
% Solid or resin solution), 2-component curing type polyurethane (100% solid or resin solution), urethane emulsion, etc.

[0010] The content of the synthetic resin in the cushioning material for a riding ground according to the present invention is usually 0.1 to 30% by weight, preferably 1 to 20% by weight, more preferably 1 to 20% by weight, based on the weight of the dry sand. Preferably it is 2 to 10% by weight. If the content of the synthetic resin is less than 0.1% by weight, dust and dust will soar up in the dry season or freeze in the cold season, and if it exceeds 30% by weight, the characteristics of natural sand such as good cushioning properties will be impaired.

The oil used in the present invention includes, for example, silicone oil (dimethyl silicone oil, phenylmethyl silicone oil and the like and their modified oils), vegetable oil (linseed oil, tall oil, coconut oil, etc.), mineral oil Alternatively, there may be mentioned thickened products thereof (thickened products obtained by using a viscosity index improver such as polyalkyl methacrylate of petroleum refined distillate, liquid paraffin, etc.) and oil-soluble polyethers (such as polyoxypropylene glycol monoether). Preferred among these are silicone oils, vegetable oils, mineral oil thickened products and oil-soluble polyethers,
Particularly preferred are dimethyl silicone oil, vegetable oil and oil-soluble polyether. The oils exemplified above may be used in combination of two or more.

The viscosity of this oil at 25 ° C. is generally 5 cst to 100,000 cst, preferably 100 cst to 3 cst.
10,000 cst, particularly preferably 500 cst to 10,000 cst
st. If it is less than 5 cst, the oil will flow out due to the destruction of the sand, resulting in disadvantages such as poor durability. The pour point of this oil is usually 0
C. or lower, preferably -30 C. or lower, particularly preferably -5.
0 ° C. or less. If the pour point is higher than 0 ° C., the oil freezes in the cold season, and the cushion material freezes, causing problems such as the inability to use the riding ground.

[0013] The content of the oil in the cushion material of the present invention is usually 0.1 to the weight of the dry sand.
It is 1 to 30% by weight, preferably 1 to 20% by weight, particularly preferably 2 to 10% by weight. If the content of the oil is less than 0.1% by weight, dust and dust will soar in the dry season or freeze in the cold season, and if it exceeds 50% by weight, the characteristics of natural sand such as good cushioning properties will be impaired.

The bed material of the present invention has a bulk density of usually 0.1 to 0.9 g / cm ³ , preferably 0.1 to 0.9 g / cm ³ .
5 to 0.8 g / cm ³ . Bulk density is 0.1g / c
If it is less than m ³ , the foothold is poor, and if it exceeds 0.9 g / cm ³ , the durability against impacts due to daily movement and the like becomes poor. The bed material cushion material of the present invention may contain other additives such as a coloring agent such as a pigment, an ultraviolet absorber, and an antioxidant as long as the various properties required for the cushion material and the bed material are not hindered. Good.

The cushioning material for a baba of the present invention is obtained by mixing the synthetic resin in the form exemplified above, oil and other additives exemplified above as necessary with sand, and curing (with heating and drying as required). By doing so, it can be easily manufactured. During this mixing, the form of the synthetic resin is a liquid,
In the case of an emulsion or a resin solution, it may be used as it is, while in the case of a solid resin, it may be heated and melted or used as a resin solution. Mixing methods include on-site mixing,
Plant mixing and the like. It is possible to create a homogeneous bed cushion by any method such as on-site mixing or plant mixing, but in each case, accurately grasp the weight ratio of the synthetic resin and oil to dry sand and add them. In order to do this, it is advisable to measure the water content of the sand in advance.

[0016] Natural sand alone has low hardness and low consistency. Therefore, if water is not sprayed to the optimum moisture content of the bed, there are problems such as dust flying up and poor foothold. However, the cushioning material of the present invention maintains the hardness and consistency in the optimum range without adjusting the water content, and does not change with time.

[0017]

EXAMPLES The present invention will be further described with reference to examples below, but the present invention is not limited to these examples. Parts in the examples are parts by weight. Example 1 12 parts of a polycarbonate urethane resin emulsion [Permarine UA-300 manufactured by Sanyo Chemical Industry Co., Ltd.], 12 parts of dimethyl silicone oil [SH200-1000cs manufactured by Toray Dow Corning Silicone Co., Ltd.] and sea sand 400 from Aomori After mixing and stirring with a universal mixer for 5 minutes, the mixture was allowed to stand at room temperature (25 ° C.) for 8 hours,
A cushion material (1) for a riding ground according to the present invention was obtained.

Example 2 Linseed oil 12 was used instead of dimethyl silicone oil 12 parts.
Except for using the part, a cushion material (2) for a riding ground of the present invention was obtained in the same manner as in Example 1.

Example 3 Room temperature curing type 2 in place of 12 parts of urethane resin emulsion
Bench cushioning material (3) in the same manner as in Example 1 except that 10 parts of a liquid silicone foam-forming resin [SE1900 manufactured by Dow Corning Toray Silicone Co., Ltd.] is used.
I got

Example 4 The procedure of Example 1 was repeated, except that 10 parts of polyoxypropylene glycol monoether [Newpol LB-1715 manufactured by Sanyo Chemical Industries, Ltd.] was used instead of 12 parts of dimethyl silicone oil. A cushion material (4) for a riding ground was obtained.

Example 5 A riding ground (1) using a riding ground cushion was obtained by spreading the riding ground cushion (1) on the riding ground.

Example 6 A dressing cushion material (3) was laid on a riding ground to obtain a test dressing (B) using the riding material cushion material.

Comparative Example 1 4-6% water was added to the same sea sand from Aomori as in Example 1 to obtain the optimum moisture content in Baba. This is used as a comparative cushion material (5) for a horse riding ground.

Comparative Example 2 A cushion material (6) for comparison was prepared based on the formulation shown in Table 1 of Example 1 of JP-A-2-274905. However, sea sand from Aomori was used as the natural sand.

COMPARATIVE EXAMPLE 3 The same sea sand from Aomori as in Example 1 was laid on a horse ground to make a test horse ground (C) for comparison.

Test Examples and Comparative Test Examples The results of the water resistance, hardness, consistency, bulk density and water permeability tests and the freezing test of the cushioning materials (1) to (6) for Baba are shown in Table 1 below. The results of the durability test are shown in Table 2 below.

One month after the construction of the test tracks (A) to (C),
The results of each test of water permeability, bulk density, hardness and consistency after 3 months and 6 months and the results of the freezing test are shown in Table 3 below.
Shown in

[0028]

[Table 1]

Note 1) In the water resistance test, 500 ml of tap water was put into a beaker, boiled, 30 g of a sample was put in the beaker, heated for 10 minutes, and the state of oil separation on the surface of the water was observed. Note 2) Hardness and consistency were measured with a neo card meter. Note 3) The bulk density was measured according to JIS-K-3362. Note 4) The water permeability test was performed according to the JIS-A-1200 variable water level permeability test. Note 5) In the freezing test, spray water on the test cushion
Draining was performed for 0 minutes, and the state after standing at −20 ° C. for 24 hours was observed by touch. ○ indicates loosening without applying force, △ indicates loosening with increasing force, and × indicates freezing. * After the numerical value indicates the value before the water preparation.

[0030]

[Table 2]

Note: The durability test was carried out by measuring the bulk density after grinding the test cushion material in an automatic mortar for one hour. The bulk density was measured according to JIS-K-3362. The bulk density value of the cushion material (5) is 1.67 g /
cm ³ is a value corresponding to a use period of 2 years in a normal riding ground.

The results in Table 2 show that the cushioning material obtained according to the present invention has good cushioning properties over a long period of time.

[0033]

[Table 3]

Note 2 to Note 4) Water permeability, bulk density, hardness, and consistency were measured in accordance with the above-mentioned measuring methods. Note 6) In the freezing test, after rain or snow fell, when the temperature dropped below the freezing point, the state of the riding ground was observed by touch. ○ means loosening without force, and × means freezing. Further,-indicates that the test was not performed. * After a numerical value shows the measured value before moisture preparation.

From the results shown in Table 3, it can be seen that the bed using the cushion material obtained according to the present invention maintains the initial performance even after construction.

[0036]

The present invention has the following effects. (1) The cushioning material of the present invention has good cushioning properties over a long period of time. (2) The cushioning material of the present invention has good drainage and running properties for a long time without being affected by weather conditions. The cushioning material obtained by the present invention and the track using the cushioning material having the above-described effects are useful as a cushioning material and a ballast for a dart course of a racetrack, a dirt course of a training center, a dirt course of a breeding ground, a ranch and the like. .

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Teruaki Yajima 2,500, Mikoma, Miura-mura, Inashiki-gun, Ibaraki Pref. 2 Inside the Miho Training Center of the Japan Racing Association (72) Inventor Hayato Ariya Miura-mura, Inashi-gun, Ibaraki At 2500 Koma, Japan Miho Training Center, Japan Central Racing Association (72) Inventor Kazuo Goto In 2500, Miura Village, Miura-mura, Inashiki-gun, Ibaraki Pref. Tadahiko Soyama Judge, Kasuke Ichino (56) References JP-A-62-225604 (JP, A) JP-A-3-122306 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A63K 3/00 E01C 13/00

Claims (7)

(57) [Claims] 1. It is made of sand coated or mutually bonded with a component comprising at least one non-olefin water-insoluble synthetic resin selected from silicone-based and urethane-based resins and an oil, and is water-permeable. Bushion cushioning material characterized by the following. 2. The bed material according to claim 1, which has a bulk density of 0.1 to 0.9 g / cm ³ . 3. The flooring cushion material according to claim 1, wherein the oil is at least one selected from silicone oil, vegetable oil and oil-soluble polyether. 4. The oil has a viscosity at 25 ° C. of 5 cs.
The cushioning material for a riding ground according to any one of claims 1 to 3, wherein the cushioning material has a t of 100,000 cst and a pour point of 0C or less. 5. The method according to claim 1, wherein the content of the synthetic resin is 0.1 to 30% by weight based on the weight of the sand in terms of dry sand.
4. The cushion material for a horseback riding ground according to any one of the above items 4. 6. The oil according to claim 1, wherein the content of the oil is 0.1 to 30% by weight based on the weight of the sand in terms of dry sand.
The cushioning material for Baba according to any one of the above. 7. A riding ground comprising the riding ground cushion material according to any one of claims 1 to 6.