Patent ID: 7968025

Claim:
A method for manufacturing spunbonded nonwoven, comprising the following sequential steps; a) laying at least one layer of fibres or microfibres of spunbonded nonwoven on a suitable support; b) treating said layer such as to obtain an increase in the thickness thereof, wherein said step b) comprises passing said at least one layer of fibres or microfibres between two opposed rollers on said support having a contact surface with said fibres or microfibres provided with ribs alternating with grooves, and wherein the roller underlying said support with ribs and grooves is provided with a thermoplastic smooth rubber outer surface and the opposing roller is provided with a single smooth metal outer surface that contacts the fibres or microfibres of the spunbound nonwoven and is subject to heating at the melting temperature of said fibres or microfibres, and wherein the ribs of said support face the opposing roller provided with a smooth metal outer contact surface that contacts the fibres or microfibres of the spunbound nonwoven.