Process of making poly(trimethylene terephthalate) bulked continuous filament carpet yarn
AssigneeHyosung Corporation
InventorsKyool Seop Lee, Young Chan Choi, Jong Bok Lee
Life of this patent
Estimating the term…
Abstract
This invention relates to a poly(trimethylene terephthalate) BCF carpet yarn having a Y-shaped cross-section that has an modification ratio and a arm angle within a specific range, and a method for preparing it. The BCF carpet yarn has excellent bulk property and spinning efficiency, and a carpet made from it has good appearance, sense of touch, and tufting efficiency.
Claims5
A method for preparing a poly(trimethylene terephthalate) bulked continuous filament carpet yam with a Y-shaped cross-section, comprising the step of melt-spinning poly(trimethylene terephthalate) having an intrinsic viscosity of 0.8 to 1.2 and a moisture content of 50 ppm or less at a spinning rate of 1,500 to 4,000 m/mm, wherein a spinning nozzle is used, which has a Y-shaped cross section whose modification ratio and arm angle are within a range of a parallelogram ABCD in FIG. 3.
Dependencies are inferred from the claim text.