Save water when dyeing with Fongs technology

17 Mar '10

11 min read

Jumbo flow High Temperature Dyeing Machine

The significantly lower amount of water in circulation also means considerably lower requirements of auxiliary chemicals and, in reactive dyeing, particularly of Glauber's salt. Dyeing of most synthetic fabrics can be effected without the use of anti-foaming agents.

Over and above this, the lower liquor ratio also offers a higher efficiency of dyestuffs. In THEN-AIRFLOW® technology, the dyeing point is in the nozzle. By injecting the dyeing liquor into the airstream transporting the fabric through the nozzle, an aerosol mist is created that offers dyestuff penetration far beyond the reach of any dye bath. In reactive dyeing, customers achieve annual savings of around 5% on their dyestuffs bill.

The low liquor ratio and low overall water consumption also mean that total cycle times are greatly reduced. For a 100% cotton fabric in a dark red (maroon) shade, the total process time including loading, pre-bleaching, reactive dyeing, washing-off, rinsing and unloading is 278 min. This means a theoretical batch rate of 5.2 per day and thus a massive improvement in productivity over old technology. The overall water consumption for this fabric from loading to unloading is 39 l per kg.

In pure bleaching operations, THEN-AIRFLOW® machines achieve water consumption figures of 8 l per kg for RFD (ready-for-dyeing) and 9 l per kg for optical white.

THEN-AIRFLOW® machines are available as high-temperature models or as atmospheric machines. There are presently more than 2,500 units of late design in operation worldwide, offering their respective owners economic and ecological superiority on both woven as well as knitted fabrics across all natural and man-made fibre contents.

THEN-AIRFLOW technology is unrivalled as the most economical exhaust dyeing technology and the most ecologically sound solution in the industry: it offers the smallest water footprint of any exhaust technology available today.

3. Continuous Wet Processing – Goller Colora Dyeing Range -
Goller has been a leading manufacturer of continuous wet finishing lines for woven and knitted fabrics, for a long time. Compared to discontinuous processing machines, it is evidenced that all Goller products have a lower consumption of water, steam and chemicals. This is also valid for the dyeing process of wovens on the pad steam range Colora as well as for our washing range Sintensa for knits after CPB dyeing.

In order to protect the environment and to save previous resources, we are trying to reduce the water consumption as far as possible. Especially in the field of intensive R&D we made a lot of progress. All ranges of Goller are equipped with a state-of the-art computer program, which controls and regulates the whole setting of the machine.

For Goller it is self understanding that also the liquor content in the different washing compartment is reduced to the absolute necessary minimum. This is important when the production line has to be emptied and refilled when changing the colour which has to be dyed / when changing the colour for dyeing process. This means that in the Effecta compartments for woven fabrics the bottom guide rollers are submerged only by 2/3 of its diameter.