Patent ID: 8357256
Filing Date: 2013-01-22
Classification: B01D,D04H,Y10T

Abstract:
1. A process for the manufacture of a three-dimensional nonwoven material comprising the steps of: providing a nonwoven web, the nonwoven web comprising thermoplastic fibers or fixation material, forming peaks and valleys in the nonwoven web by introducing the nonwoven web into a folding element, the folding element comprising a plurality of blades that extend radially from a plurality fo heads, the folding element operating at a first linear displacement speed, fixing the peaks and valleys in the nonwoven web to form a three-dimensional nonwoven material, by heating the folding element itself or by heating the nonwoven web, while the nonwoven web is in the folding element, extracting the nonwoven material from the folding element with an extraction device the extraction device comprising a pair of conveyors, the conveyors operating at a second linear displacement speed which is greater than the first linear displacement speed.