Manufacturing of microfibres
The technology involved in the extrusion of microfibres is more sophisticated and costly than that of
conventional deniers. Microfibres are delicate yarns that require great care in handling during textile
mill processing. [1]
There are various methods of producing microfibres, including modified conventional spinning. All
three conventional spinning methods, namely melt spinning, wet spinning, and dry spinning can be
employed to manufacture microfibres. For this method, carefully selected polymerisation, polymer
spinning and drawing conditions are required. Polyester, nylon, and acrylic microfibres may be
manufactured by this method. The extrusion spinnerets should contain many holes of very fine
diameter, each of which will make one uninterrupted filament, in spite of complex thermal and
rheological changes. Detailed aspects of the various manufacturing methods are presented in the
following chapter.