A PROCESS AND AN APPARATUS FOR PRODUCING COARSE COUNT AND TRIDIMENSIONAL CRIMPED MULTIFILAMENT BCF YARNS, YARNS THUS OBTAINED AND APPLICATIONS THEREOF

摘要

The invention relates to a process and an apparatus for the production of coarse count and tridimensional crimped multifilament BCF (Bulk Continuous Filament) yarns, starting from polyamide 6.6, which envisages cooling in water and subsequent non- mechanical treatment with a mixture of air and steam, such that the yarns obtained have controlled chemical-physical and mechanical properties; the invention also relates to the yarns obtained by the aforesaid process and/or the aforesaid apparatus, both in a wound form in a cut form. The coarse count and tridimensional crimped multifilament BCF yarns having controlled chemical-physical and mechanical properties according to the present invention are suitable for non-textile applications and are preferably and advantageously employed in the manufacture of carpets for large surfaces.