Draw Texturing Machine
Yarn Drawing Techniques:
Fibres can be drawn either as an integral part of the spinning operation or in a separate step. Fibres such as nylon and polypropylene can be drawn without applying external heat (or at a temperature no greater than about 70 °C [160 °F])—a process referred to as cold drawing. Other fibres, such as polyester, that are spun at extremely high rates yield what is known as partially oriented yarns (POY)—i.e., filaments that are partially drawn and partially crystallized and that can be drawn at a later time during textile operations.