An apparatus for transferring at high speed and in a very effective and accurate and cost effective manner particulate material from a first moving endless surface with reservoir(s) to a second moving endless surface carrying a substrate material such as a nonwoven web material and transferring said combination of substrate material with particulate material toa further apparatus unit said second moving endless surface is adjacent and in communication with a first and a second vacuum chamber with different vacuum pressures and/or different size. Also a process is provided using the described apparatus.