Method for the production of nonwoven webs, the cohesion of which is obtained by means of fluid jets

摘要

A method for producing a nonwoven web formed at least partly with hydrophilic fibers is provided. In one aspect, the method comprises producing by carding a textile layer (10) which is then compressed and moistened; subjecting the textile layer to a bonding treatment using water jets acting at least against one of its surfaces; and transferring said bonded layer to a unit (32, 33) to be dewatered and dried. One aspect of the method is characterized in that, after the bonding treatment (20) with water jets and before drying and delivery, the pre-bonded and moistened layer is transferred to a supplementary unit (28) to be treated by the action of one or several series of water jets, the unit comprising a mobile suction surface in the form of a drum covered with an open-work structure (30) comprising a wire-mesh fabric, the wire-mesh fabric comprising successive raised and recessed zones.