Classification of polyester filament

Polyester filament is divided by production method：

1. Primary yarn: undrawn yarn (conventional spinning) (UDY), semi-pre-oriented yarn (medium-speed spinning) (MOY), pre-oriented yarn (high-speed spinning) (POY), highly oriented yarn (ultra-high speed) Spinning) (HOY)

2. Drawing filament: drawing filament (low-speed drawing filament) (DY), fully drawn filament (spinning and drawing one-step method) (FDY), full-drawing filament (spinning one-step method) (FOY)

3. Textured yarn: conventional textured yarn (TY), stretched textured yarn (DTY), air textured yarn (ATY).

Polyester filament is divided by purpose：

Mainly divided into civil and industrial use