Patent ID: 8557170
Filing Date: 2013-10-15
Classification: C08G,C08L,D01F,D04H

Abstract:
1. A process for the manufacture of nonwoven surfaces by direct melt spinning of filaments of a composition based on thermoplastic polymers comprising the steps of: a) feeding the composition to a plurality of spinnerets each comprising several spinning orifices, b) feeding the filaments to a pneumatic attenuation device and a stage in which the filaments obtained are formed into a sheet, wherein the composition based on thermoplastic polymers comprises a polymeric matrix and/or a modifying polymeric additive comprising repeat units corresponding to the following general formulae: with the proviso that (a) when the additive is absent, the polymeric matrix comprises at least one of the repeat units I or II and at least one of the repeat units III or IV; (b) when the additive is present, the polymeric matrix comprises at least one of the repeat units I or II.