Fully drawn yarn is a variety of a highly drawn polyester filament that is widely used to produce fabrics and textiles. Fully oriented yarn polyester (FOY) is also known as fully drawn yarn (FDY). The process to manufacture fully drawn yarn is similar to that of partially oriented yarn (POY). However, the yarn is produced at very high spinning speeds compared to POY and combined with intermediate drawing. Further, the high spinning speeds enable stabilization through orientation and crystallization.
