Processes for forming carbon-containing aramid bicomponent filament yarns

• Main Authors: Steinruck, Thomas Wayne, Aronson, Mark T, Newton, Christopher William, Zhu, Reiyao, Andersen, Mark William, Wiseman, B Lynne
• Format: Patent
• Language: English
• Published: 25.06.2024
• Subjects: ACCESSORIES; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS; HUMAN NECESSITIES; MECHANICAL FINISHING OF YARNS OR ROPES; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; OUTERWEAR; PROTECTIVE GARMENTS; SPINNING; TEXTILES; WARPING OR BEAMING; WEARING APPAREL; YARNS; YARNS OR THREADS

Processes for forming a yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition; the regions being distinct and present in the bicomponent filaments in a sheath-core structure or a side-by-side structure; wherein the first polymer composition comprises aramid polymer comprising 5 to 10 weight percent homogeneously dispersed discrete carbon particles and the second polymer composition comprises aramid polymer being free of discrete carbon particles and having at least one homogeneously dispersed masking pigment, the yarn having a total content of 0.5 to 5 weight percent discrete carbon particles.