In the manufacture of rayon, the first stage is to convert pulp into alkli cellulose, for this high purity pulp sheets and caustic soda lye are fed into a slurry mixer tank titled with and agitator to form pulp slurry. The slurry press where excess slurry caustic soda lye is squeezed out tu produce a blanket of alkali cellulose. It is then passed through a shedder to from alkali-cellulose crumbs.