From：Join High (Xiamen) Fiber Tech Co., LTD Release time：2018-09-11
Classification Of continuous filament yarn:
According to the shape of the filaments in the yarn, filament yarns are classified into two types, flat and bulk.
The filaments in a flat yarn lie straight and neat, and are parallel to the yarn axis. Thus, flat filament yarns are usually closely packed and have a smooth surface.
The bulked yarns, in which the filaments are either crimped or entangled with each other, have a greater volume than the flat yarns of the same linear density.
Texturing is the main method used to produce the bulked continuous filament yarn. A textured yarn is made by introducing durable crimps, coils, and loops along the length of the filaments. As textured yarns have an increased volume, the air and vapor permeability of fabrics made from them is greater than that from flat yarns.