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US 4,735,825 AGranted
Method of applying and bonding free-flowing bulb material to artificial grass
AssigneeJ. F. Adolff AG
InventorHans J. Friedrich
Life of this patent
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Abstract
The invention relates to an artificial grass, in particular for sports and playing areas, having a filling of free-flowing bulk material, in particular sand, provided between its pile threads such that the free ends of the pile threads project above the filling. According to the invention, the filling is fixed in relation to the pile threads by a bonding agent.
Claims2
A method of producing a pre-formed artificial grass including the steps of:
- (a) mixing a free-flowing bulk material with a bonding agent,
- (b) distributing the resulting mixture of free-flowing bulk material and curable bonding agent between the upwardly projecting pile threads of a base mat as a filling whereby the pile threads project above said filling, and
- (c) subjecting said curable bonding agent, mat and filling to a curing condition for said bonding agent whereby said bonding agent secures said bulk material to said upwardly projecting threads and said artificial grass may be rolled after fabrication at a site of manufacture for transport to a site of use and unrolled at said site of use substantially without loss of said bulk material.
Dependencies are inferred from the claim text.