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RBNV-I 270 Automatic lab yarn dyeing machine

AUTOMATIC HIGH PRESSURE AND HIGH TEMPERATURE VERTICAL MACHINE FOR DYEING AND BLEACHING FOR LABORATORY PURPOSE OR SMALL LOTS OF YARN.

RBNV-I 270 it is used for preliminary dyeing tests on yarn packages, hanks, tops, loose stock fibers and narrow tapes by using interchangeable spindle carriers.
The machine is pressurized at 5 bars and 140°C and might be considered as a fundamental “bridge” between actual laboratory machine and industrial production.
The machine is configured with electronic sensors, probes and pneumatic/automatic valves to perform all the functions of the dyeing cycle in a completely automatic way by means of the process controlling computer LEONARDO® PC, without the need of a continuous intervention by the operator.
The typical functions performed automatically are:

  • Filling at variable programmable level
  • Operator call
  • Introduction of the products from the adding tank at controlled speed (dosing).
  • Circulation with automatic programmed control of the differential pressure value, of the pump speed, or of the liquor flow-rate by means of a flow-rate device (optional).
  • Programmed heating
  • Operator call for sample
  • Dye bath recirculation from machine to adding tank and from adding tank to machine ( operation made only if programmed, because not needed due to the presence of the air pad system)
  • Color correction cycle
  • Indirect cooling
  • Continuous rinsing by overflow
  • Direct cooling
  • Normal and high temperature discharge (to avoid oligomers with polyester)