This is another development of the very popular jet
dyeing machines. The main difference between the Air Flow Machine and Jet
Dyeing machine is that the airflow machine utilizes an air jet instead of
the water jet for keeping the fabric in circulation. Typically the fabric is
allowed to pass into the storage area that has a very small amount of free
liquor. This results in a reduction in consumption of water, energy and
chemicals.
The figure below shows how in an Airflow Machine the bath level is always
under the level of the processed textile. Here the fabric does not remain in
touch with the liquor (the bath used is below the basket that holds the
fabric in circulation). This invariably means that the bath conditions can
be altered without having any impact on the process phase of the substrate.