An industrial textile machine designed to clean wool slivers immediately after the carding process and before combing. It removes spinning oils, residual dirt, and natural grease that were loosened or added during carding. The machine typically passes the continuous sliver through a series of wash bowls, squeeze rollers, and drying cylinders to prepare the fiber for smooth drafting.
Heard on the job
The sliver is coming out too greasy, so check the detergent feed on the backwasher.
Insider tip
Proper tension control through the backwasher is critical; if the sliver stretches too much while wet, it ruins the fiber alignment.