From：Join High (Xiamen) Fiber Tech Co., LTD Release time：2018-08-01
Bulked continuous filament is different. Instead of creating many 7-inch or 8-inch lengths of strands, continuous filament is extruded as one long string. These strings are then twisted and heatset together to form strands of yarn. The yarn may also be texturized to curl, or kink; this also increases the bulk and gives the yarn twist more memory for better texture retention and wear resistance.
Because BCF fiber is one continuous strand of fiber, it will not shed loose fibers like
staple fibers. It is also more cost-effective to manufacture continuous filament yarn
today, because of the fewer steps required.
Perhaps most important are advances in fiber technology, resulting in the ability to
create filament looks that were not practical in the past. Technology has also made
filament production faster and even more economical than before. Styles that were the almost exclusive domain of spun yarn can now be made with continuous filament yarn.