From this, it was concluded that uptake of both disperse and direct dyes was neither fibre- (PET or cotton) nor dye- (disperse or direct) related, but, rather, was
dependent upon some function of fabric construction. In this context, comparisons were made between the arrangement of fibres in woven and knitted fabrics and in nonwoven fabrics which give rise to differences in local porosity and accessibility to dye
molecules, which resulted in the suggestion that whilst the mass transport of dye molecules might be rapid to the entire interior fibre surfaces of a hydroentangled nonwoven structure