Artificial turf got its final breakthrough when the 3rd generation technology was introduced in the late half of the nineties. Until then, artificial turf was used widely in e.g. tennis courts and fields for American football and baseball but because the ball behaviour was quite different from that of natural turf, it was not yet considered suitable for soccer on a high level. This changed completely with the introduction of the 3rd Generation technology where rubber granulate was used as infill and thereby improved ball rebound and running characteristics.
This has lead to the complete acceptance by all the important football organisations like FIFA and UEFA, and artificial turf is now recommended for use on all levels, e.g. Champions League and the World Cup.
In a typical artificial turf, Genan rubber granulate contributes to both the infill layer (Fine, Fine-mix or Medium) as well as the manufacturing of the elastic layer, no matter whether it is built up on site (in-situ) or from prefab mats.