The textile industry is a large user of water, steam and hot oil unions. Weaving, dyeing and finishing processes are the largest users of rotating unions. Textiles go through a series of wet/dry processes. Drying and cooling processes use heated or cooled rolls or dryer cans utilizing rotating unions. Applications differ based on whether the textile is woven, knitted, or synthetic fibers.
Woven and Knitted Cloth Textiles
Both natural and synthetic fibers go through many processes before becoming
cloth including warping, sizing and slashing. Once woven or knitted, additional processing that require rotating unions includes singeing, bleaching, washing, dyeing, and printing. Knitted cloth requires similar processes with the major application known as compaction.
Synthetic Fiber, Slit Film and Monofilament
Synthetic or man-made fibers are most commonly produced by an extrusion
process. Once extruded, the fibers pass over a series of rolls that require rotating unions for heating and cooling. Unions are also used in the processing of the plastic pellets or chips used to make synthetic fiber, slit film and monofilament.