USES

Filling　material for sand fill turf

Tennis court, sports surface
Kinder garden, school ground
Shock absorbing surface in child park

Filling　material for long pile turf

Futsal court, sports surface
Kinder garden, school ground
Shock absorbing surface in child park

FEATURE

For sand fill artificial turf

• Incorporated balloon inside the covering film of sand makes the surface excellent elasticity and shock absorbency. It realize comfortable playability and safety at falling down.
• Due to very low crushing rate, this color sand prevent hardening of the surface and retains long period. Conventional turf surface filled silica sand will harden soon by the aggregates of fine powder of crushed sand.
• By above advantage, this color sand will prevent pollution of dust dispersion.
• This sand reduces abrasion between turf pile and color sand, life of the surface will extend much longer and lines of court are well visible.

For long pile artificial turf

• There is any unpleasant smell differing from waste tire chips.
• This color sand reduces hot feeling in summer season differing from waste tire chips.
• This color sand reduces electrostatic sting differing from EPDM rubber chips.
• This color sand contains no oily volatile material　in hot season differing from EPDM rubber chips, so not noxious to human body.

Test and measuring example

Softness of the surface

Test method

Acceleration was measured by normalizing method of JIS 6519, (Japan Industrial standard, Steel furring components for gymnasium floors )

and measured by dropping 3.8kg wt. load which is attached acceleration measuring sensor at the bottom from the 20cm height. On the sample, 13mm thickness round wooden plate is laid at the center of the dropping place to avoid sticking the sensor head into the sample.

The apparatus

made by The yokohama rubber Co.,Ltd.

Test samples and result

Material alone	elastic color sand 20mm thickness(t=20)	68G
	silica sand, t=20	80G
	PU bound EPDM rubber chip layer, t=10	70G
Sand fill turf surface (L=20)	elastic color sand filled turf surface, t=20	55G
	silica sand, t=20 filled turf surface	68G
Long pile turf surface (L=60)	silica sand, t=20 + elastic color sand, t=20 filled turf surface	51G
	silica sand, t=40 filled turf surface	61G
	silica sand, t=20+rubber chip, t=20 filled turf surface	44G (conventional standard type)

Crushing test（Increasing Quantity of fine powder after crushing test）

Test method and apparatus

2.0kg wt. load, attachedφ=65mm iron round plate with t=3 rubber sheet at the bottom., dropped from 12 cm height 50 times/min. repeatedly on the filled test sand filled theφ=110mm round iron vessel. Increasing quantity of the fine powder under diameter 0.5mm after 8 hour crushing test was measured.(our own method and apparatus)

Quantity of fine powder under 0.5mm

	before test	after test
Non-treated NO.3 silica sand (diameter 2.3mm Max.)	3 %	58 %
Elastic colored sand of NO.3 silica	0 %	3 %

SPECIFICATION

Material	Core；silica sand, diameter 2.3mm Max. Covering film； polyurethane resin, pigment, stabilizing agent, inorganic filler and other ingredients
Color	light beige, light green
Particle diameter	approximately　0.7～2.5mm
Substantial specific gravity	1.93～2.00
Volumetric specific gravity	1.05～1.15