Carpets made from poly(trimethylene terephthalate) bulked continuous filaments
AssigneeE.I. du Pont de Nemours and Company
InventorsJames Milton Howell, Wae-Hai Tung, Frank Werny
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Abstract
Polyester carpets of poly(trimethylene terephthalate) are disclosed which have excellent stain-resistance, texture retention and resistance to crushing. The bulked continuous filament yarn used to make the carpets and the process for making the yarns are also disclosed.
Claims8
A carpet comprising tufts ply-twisted, heat-set yarns, said yarns containing multiple hot-fluid jet bulked and entangled continuous filaments having random 3-dimensional curvilinear crimp, wherein said filaments are of poly(trimethylene terephthalate) having an intrinsic viscosity between about 0.6 and 1.3, wherein each of said yarns has a boil off BCE between 20-95% and a shrinkage from 0 to 5%, and whereby said carpet has a texture retention of at least 4.0 and a pile height retention of at least 90% after 11,000 cycles of human traffic.
Dependencies are inferred from the claim text.