After the molten polymer mass exits the spin packet, the spinning process becomes the real function defining step in the production process of fibers and filaments. The spectrum of application ranges from staple fibers and nonwovens to industrial textiles.
The spinning process mechanically or aerodynamically accelerates the fibers to the required spin speed. The process quality depends most of all on the regularity of the fiber characteristics and the productivity.
In recent years, a series of research activities at Fraunhofer ITWM have provided the foundation for a comprehensive simulation of such spinning processes. The filament models based on the Cosserat theory, are based on a one-dimensional balancing of mass, impulse and energy along the filament for string models and additionally, the rotary angular momentum for rod models.