n multifilament polyolefin yarn formation processes and yarns formed therefromUS7445842May 22, 2006Nov 4, 2008Morin Brian GMelt-spun multifilament polyolefin yarn formation processes and yarns formed therefromUS7611763May 28, 2003Nov 3, 2009Lankhorst Indutech B.V.Yarn for an artificial turf ground cover, artificial turf ground cover and playing field including such a yarn and method for producing