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With the increasing popularity of artificial grass, many sports lawns and gardens have started to adopt this type of material.
However, first-time buyers are still experiencing some difficulties. Buyers ask several questions and sellers respond with photos and technical specifications that are often unfamiliar to a layman.
The question then remains: what is the most appropriate model for my need and how do I know if the grass is of good quality? What do all those technical specifications mean?
We will help you to better understand the various types of artificial grass.
What does the FIFA Quality Concept mean?
The FIFA Quality Concept is a standard that determines the guarantee of the best quality standard for football fields. Grams that meet this standard in terms of strength and safety earn the "FIFA RECOMMENDED" quality seal. To earn this seal, the grass needs to undergo laboratory analysis and several tests with the installed grass. FIFA certified courses can be used for international competitions and are used by several teams around the world.
What does it mean for a grass to be FIFA 1 or 2 STARS?
FIFA 1 Star Grams are those that cater to amateur games (Municipal fields, fields for national football matches).
FIFA 2 Star Grades meet the highest requirements for international matches.
Filament height
The filament height corresponds to the filament length measured from its base to its upper end. Most common unit used is the millimeter.
Dtex
Dtex is the weight in grams of 1000 meters of the filament that makes up artificial grass. It is short for decitex. A higher dtex corresponds to a thicker filament, that is, a higher density, and in turn, a lower dtex corresponds to a thinner, less dense filament.
Sewing stitches
Corresponds to the number of artificial grass sewing stitches per 10 cm linear.
Distance between rows
It deals with the distance between sewing threads. The unit of measurement normally used is the millimeter.
Density
Number of artificial grass stitches per square meter.
Base
It can be made of latex or Polyurethane (PU). Latex can be double-based and PU can be triple-based. The more bases, the greater the resistance.
How to calculate Dtex?
Is easy. Count the number of stitches in 10cm, as in the "Sewing stitches" image. In the grass in the photo, there are 14 stitches in 10cm, so we have 140 stitches in 1 meter. Now see the distance between each row of sewing thread. The distance between rows in the grass in the photo is 1.05cm, totaling 105 lines in 1 meter.
With that we have 140x105 = 14700 points / m² which corresponds to the density of the grass and / or Dtex.
It is easy to count the number of points but it is a little more difficult to be able to measure the distance between careers. The distance between rows depends almost exclusively on the machine that will make the grass. Manufacturers regulate machines to produce pre-set distances, which are usually 3/4 "(19.05mm), 3/8" (9.52mm), 5/8 "(15.87mm), 3/16 inch ”(4.76mm), 5/32” (3.97mm) and 1/2 ”(12.7mm).
So what kind of grass do I need?
Each type of grass has a different usage recommendation, which depends on the height of the filament and its density. For example, soccer fields use 30mm to 70mm filaments, usually 50mm. Tennis shoes need to be between 10mm and 20mm high. In both cases, the use of a high density grass is recommended.
