Innovation suggests methods and installations for productions of viscose filament rayon with cyclically varying linear density. According to the method of the invention, constantly synchronizated viscose solution supplying and spinning devices actuation is interrupted, as first (27) and second (28) spinning devices and arranging freshly spun yam in centrifuge system 39-5 are actuated by the use of existing power feeding installation (40-4), motors 40-1 and 40-2 and reduction gear groups 39-1 and 39-2 named as the first power feeding and actuating installation. According to the method of the invention new power feeding 40-7 and actuating; 40-3 installation is added to the same spinning machine named second power feeding and actuating installation which work runs under unit 42 control. According to the invention power shaft 21 actuation do not depends on other spinning devices actuation anymore and quantity of viscose dozed to the spinning could be changed independently of other devices work.

When to the spinning machine one or two individual installations for dying are joined suggested method allows production of dyed in one or two colours filament rayon with cyclically varying linear density.

Innovation suggests methods and installations for productions of viscose filament rayon with cyclically varying linear density. According to the method of the invention, constantly synchronizated viscose solution supplying and spinning devices actuation is interrupted, as first (27) and second (28) spinning devices and arranging freshly spun yam in centrifuge system 39-5 are actuated by the use of existing power feeding installation (40-4), motors 40-1 and 40-2 and reduction gear groups 39-1 and 39-2 named as the first power feeding and actuating installation. According to the method of the invention new power feeding 40-7 and actuating; 40-3 installation is added to the same spinning machine named second power feeding and actuating installation which work runs under unit 42 control. According to the invention power shaft 21 actuation do not depends on other spinning devices actuation anymore and quantity of viscose dozed to the spinning could be changed independently of other devices work.

When to the spinning machine one or two individual installations for dying are joined suggested method allows production of dyed in one or two colours filament rayon with cyclically varying linear density.

According to the invention, in order to obtain viscose rayon directly dyed in two colours simultaneously, a second line for spinning is introduced to the existing one, as the first (38.1) and the second (38.2) pipe collectors, parts of these spinning lines, filled up with differently dyed viscose solution, supply respectively dosing pumps (22.1 and 22.2) at the first and second working positions of the spinning machine, which are powered by one and the same electromotor and work synchronously. The cellulose solution filled up in the added second pipe collector (38.2) is coloured in mass by the additionally mounted and operating independently second individual dyeing installation (10-1), so that differently dyed viscose fibers are being spun at the neighbour working positions. Then the spun at these neighbour working positions single-colour dyed rayon fibers are brought together, according to the innovative spinning design of the invention and are gathered in a common centrifuge to obtain a viscose rayon cake, directly and simultaneously dyed in two contrasting or gradating colours or colour mixtures.

According to the invention, in order to obtain viscose rayon directly dyed in two colours simultaneously, a second line for spinning is introduced to the existing one, as the first (38.1) and the second (38.2) pipe collectors, parts of these spinning lines, filled up with differently dyed viscose solution, supply respectively dosing pumps (22.1 and 22.2) at the first and second working positions of the spinning machine, which are powered by one and the same electromotor and work synchronously. The cellulose solution filled up in the added second pipe collector (38.2) is coloured in mass by the additionally mounted and operating independently second individual dyeing installation (10-1), so that differently dyed viscose fibers are being spun at the neighbour working positions. Then the spun at these neighbour working positions single-colour dyed rayon fibers are brought together, according to the innovative spinning design of the invention and are gathered in a common centrifuge to obtain a viscose rayon cake, directly and simultaneously dyed in two contrasting or gradating colours or colour mixtures.