A method of preparation of microfibrous non-woven fabric of the suede-finish
type
comprising the steps of: spinning of a bi-component fiber of the "islands in the
sea" type in which the "island" comprises a polymer chosen from among those employed
in textile applications while the "sea" is a polymer that can dissolve and be removed
by means of treatment with water, alkaline or acidic aqueous solutions, with non-polluting
organic solvents alone or in aqueous solution; preparing a felt with the bi-component
fiber; impregnating the felt with aqueous solution of polyvinylalcohol with reduced
solubility in water; removing the "sea" component by treatment with solvents step;
impregnating with emulsion or polyurethane dispersion; removing the polyvinylalcohol;
and finishing the non-woven fabric obtained.
