| 摘要 |
The elastic spunbonded nonwoven (W) has high elastic recovery properties and comprises a plurality of multicomponent filaments. Each multicomponent filament, preferably of the sheath/core type, comprises a first polymeric component (P) extending along the length of the filament in at least a first section of the filament, and a second polymeric component (P') extending along the length of the filament in at least a second section of the filament that is distinct from the first section. The first polymeric component (P) comprises an elastic propylene-based olefin copolymer, and the second polymeric component (P') comprises an elastic propylene-based olefin and has a melt flow rate MFR2 that is higher than the melt flow rate MFR1 of the first polymeric component. The elastic propylene- based olefin copolymer for the first polymeric component and for the second polymeric component comprises propylene and from 10 to 25 weight % of one or more C2 and/or C4 to C10 alpha-olefin co-monomers. Said elastic spunbonded nonwoven (W) can be easily bonded with polyolefin-based nonwoven layer(s), especially polypropylene-based layer(s), in order to make a composite nonwoven, particularly suitable for the hygienic industry (diapers,...). |
