Textile manufacturing begins with the conversion of fiber into yarn, then yarn into fabric. These are then dyed or printed, fabricated into clothing. Cotton, wool, silk, and a variety of bast fibers (hemp, f lax, and jute) undergo several mechanical operations in preparation for several available finishing processes which are typically chemical in nature. In addition to chemical finishing, synthetic fibers are produced using an extrusion process. Extrusion, as well as all chemical finishing processes utilize chemical treatment tanks and piping which benefit from the over-pressure protection provided by ZOOK rupture disks.