Geogrid composed of polyethylene terephthalate and polyolefin bicomponent fibers
AssigneeHoechst Celanese Corporation
InventorDebra W. Harford
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Abstract
This invention claims a warp knit, weft inserted geogrid fabric without a topcoat, comprising a bicomponent fiber having filaments each with a sheath of a polyolefin material and about 0.5 to about 2 weight percent carbon black and a core of polyethylene terephthalate.
Claims7
A heat bonded geogrid fabric comprising a woven or warp knit, weft inserted grid, said fabric comprising a bicomponent fiber with filaments each having a sheath of an adhesive polyolefin material comprising a polyolefin and an adhesive and containing about 0.5 weight percent to about 2 weight percent carbon black and a core of polyethylene terephthalate having an intrinsic viscosity of at least 0.89 deciliters per gram as determined from a solvent base of orthochlorophenol at 25.degree. C.
Dependencies are inferred from the claim text.