Production of microfibres
Microfibres are generally considered to be fibres with a linear density of less than 1.0 dtex [2].
Although the technology for microfibre production has been available for many years now, strong
demand for these fibres did not begin until the 1980s. The currently available microfibres are different
from ordinary fibres mainly in their dimensions, but have much lower property differences than the
standard fibres. Toray was the first company in the world to introduce microfibres, followed by Teijin,
Hoechst, ICI, DuPont, and others. Recently Toray has introduced an ultra-fine polyester microfibre
with a linear density of filament of about 0.05 dtex. This may be called the finest synthetic fibre so far
produced commercially