| 摘要 |
Process for the preparation of a micro-fibrous non-woven fabric of the suede leather type, comprising the following stages: a) spinning of a two-component fiber of the "islands" in the "sea" type; j) preparation of a felt with the two-component fiber, k) thermal stabilization treatment of the felt; l) impregnation with aqueous polyurethane emulsion; m) fixing of the polyurethane; n) removal of the "sea" component; o) impregnation with polyurethane again either as an aqueous emulsion or in the form of a high durability solution in organic solvent; p) fixing of the polyurethane; q) finishing treatments of the non-woven fabric obtained. |
