Abstract: The invention provides a method for making fibers and yarns having improved dyeability with reactive and disperse dyes, resistance to staining and improved mechanical properties and characteristics. The method includes blending a polyolefin polymer and a fibril forming polymer to provide a mixture of polyolefin and fibril forming polymers. The mixture is conducted to a hot melt extruder to provide a substantially homogenous molten mixture of polyolefin and fibril forming polymers. The molten mixture is forced through a spinneret having a length to diameter (L/D) ratio ranging from about 3 to about 30 to provide a fiber having a polyolefin matrix and elongate, substantially discontinuous fibrils of the fibril forming polymer dispersed into the polyolefin matrix, whereby the exterior surface of the fibers is substantially devoid of fibrils. Fibers made by the process of the invention are useful as carpet face yarn, in textiles, upholstery and other industrial applications, like chemical industry and others.

Abstract: The specification describes a process of making a fiber for a carpet face yarn, the yarn being made of polyolefin/polymer filaments which contain a plurality of longitudinally dispersed relatively small, short polymer fibrils inside the filaments generally concentrated toward the center thereof within the polyolefm matrix. The yarn has the stain resistant properties of polyolefm based yarns and the resiliency of polyamide based yarns at a substantially lower cost than nylon carpet yarns.

Abstract: The specification discloses a conjugate carpet face yarn comprising trilobal or delta cross-section polyolefin filaments and a plurality of generally co-linear smaller polyester fibrils embedded within the polyolefin filaments. This yarn has the stain resistant properties of polyolefin based yarns and the resiliency of polyamide based yarns.

Abstract: The specification discloses a conjugate carpet face,yarn comprising trilobal or delta cross-section polyolefin filaments and a plurality of generally co-linear smaller polyamide fibrils embedded within the polyolefin filaments. This yarn has the stain resistant properties of polyolefin based yarns and the resiliency of polyamide based yarns.

Abstract: The specification describes a conjugate carpet face yarn including trilobal or delta cross-section polyolefin filaments and a plurality of generally co-linear smaller polyamide fibrils embedded within the polyolefin filaments. This yarn has the stain resistant properties of polyolefin based yarns and the resiliency of polyamide based yarns.