The wool crabbing in continuous by overheated water under pressure
The continuous treatment takes place thanks to the use of special seals positioned at the entry and exit of the machine which allow, by means of a dedicated pump, to pressurize the process area and work at temperatures higher than the ones allowed by the atmospheric pressure.
The combination of working conditions that foresee a fabric that is completely impregnated in water and kept under pressure together with a temperature that is adjustable up to 125° C is the ideal situation in order to reach setting values that are definitely higher compared to any other similar treatment presently available.
The wool fibre turns into a plastic state and the hydrogen and cystinic bonds are broken to be re-shaped under a more stable configuration which is no more only cohesive but permanent such a transformation happens very quickly and the production increase has been calculated in at least 50% more compared to crabbing machines using for example the highly tensioned silicon belts.
Working width 180 cm Mechanical speed 4 – 40 m/min. Maximun process temperature 120°C Maximun process pressure 1,5 bar Connected load 31 kW Absorbed load 22 kW Saturate steam feeding 6 bar Water feeding 1,5 – 2 bar Compressed air feeding 6 bar Average steam comsumption ~ 350 kg/h Average water consumption (wet fabric at inlet) ~ 400 l/h Compressed air consumption ~ 100 Nl/h Weight (approximate) 14.000 kg