Patent ID: 8597754
Filing Date: 2013-12-03
Classification: D10B,E01C,Y10T

Abstract:
1. A turf underlayment layer for supporting an artificial turf assembly, the turf underlayment layer comprising a plurality of panels assembled together, each panel being made from a plurality of polyolefin beads, the plurality of polyolefin beads bonded together by at least one of pressure and heat to produce a substantially water-impervious surface, each panel further including a core, a top side having a plurality of projections, and a bottom side having a plurality of projections, the top projections forming top side water drainage channels and the bottom projections forming bottom side water drainage channels, the panels having edges, with the edges of one panel abutting the edges of adjacent panels, with the abutment of the edges of adjacent panels defining a water flow connector slot at the intersection of abutting panels, the water flow connector slot being on the bottom side of the abutting panels and in fluid communication with the bottom side water drainage channels of each of the two abutting panels, thereby providing a path for the flow of water from the bottom side water drainage channels of one panel to the bottom side water drainage channels of an abutting panel.