Abstract: The present invention refers to a system wanting to accelerate dyeing time mechanizing the loading and unloading procedure of dyeing machines and consists in folding-up the fabric to be dyed outside the machine using a device capable of folding the fabric in a perforated vat reproducing both the size and shape of the kier of the dyeing machine, that is the part of the machine containing the fabric during dyeing time, and introducing the vat loaded with the fabric into the machine where the dyeing is carried out, the latter being equipped with a water-tight introduction door having previously joined the fabric to be dyed to the pass; in drawing out said vat from the machine after the dyeing procedure substituting it with a second vat containing other fabric to be dyed already folded-up.