YARN FOR ARTIFICIAL GRASS, ARTIFICIAL GRASS, ARTIFICIAL GRASS FIELD AND CORRESPONDING USE AND METHOD

摘要

The invention relates to a yarn for artificial grass, artificial grass, an artificial grass field and corresponding use and method. The yarn comprises a fluorescent substance and/or a photochromic substance such that the yarn has a first colour when illuminated with light having a first irradiance spectrum typical for winter, and has a second colour differing visibly from the first colour when illuminated with light having a second irradiance spectrum typical for summer.