HIGH RV FILAMENTS, AND APPARATUS AND PROCESSES FOR MAKING HIGH RV FLAKE AND THE FILAMENTS

摘要

The present invention relates to industrial high relative viscosity (RV)filaments, such as, for use in papermaking machine feltsand other staple fiber applications. The invention is further directed toapparatus and processes for solid phase polymerization (SPP) ofpolyamide flake suitable for use, such as, in remelting and then spinning theindustrial high RV filaments. The invention is also directedto processes for melt phase polymerization (MPP) of molten polymer for makingthe filaments.