Multi-zone spinneret, apparatus and method for producing filaments and nonwovens from the filaments

摘要

Spinneret, instrument, and method for producing filaments for fibrous nonwovens having a more uniform filament and fabric structure and minimizing filament breakage and hard spot defects in webs and fabrics made from the filaments Is provided. The spinneret body of the spinneret can have an overall length to hydraulic diameter ratio of at least 3% and / or a length to hydraulic diameter ratio per zone of at least 2% and / or The hydraulic diameter, length, and length to hydraulic diameter ratio can be gradually increased or decreased between zones for at least three different zones of the capillary that can be applied to a crossflow quench or a one-sided empty quench.