Apparatus for preconsolidating nap of fibers and/or filaments by water jet needling, has increased spacing between needling device and nap support to avoid damage to nap

摘要

In apparatus for preconsolidating a nap (F) of fibers and/or filaments, consisting of a nap-supporting substrate (2) movable relative to a water jet impact device and a suction source (4) aligned with (and on the opposite side of the substrate from) the water jet device, the water jet needling device (3) is positioned at an increased spacing (a) from the nap-supporting substrate.