Viscose filament yarn is manufactured out of highly improved types of cellulose. Cellulose is transformed into alkali-cellulose by dipping in caustic soda solution. It is then sulphidized by carbon disulphide into cellulose xanthogenate after pressing the excessive lye out of the material. Liquid viscose is originated by dissolving of the xanthogenate in thinned caustic soda. Viscose is cleaned by multiple filtration and de-aeration. Cleaned viscose is taken to the spinning machines where it passes through very thin jets into the spinning plastification bath, where it coagulates and it comes out in a form of a highly-strong yarn. Yarn is additionally treated - it is washed, conditioned, dried and winded on cores.