Multilayer headbox

A multilayer headbox of a paper manufacturing machine, said headbox for the introduction of at least two fiber suspension streams to a forming section of the paper manufacturing machine, each suspension stream spanning across a width of the machine, said headbox comprising:

• (a) a nozzle chamber having a machine-wide outlet gap at a downstream portion thereof with respect to a direction of fluid flow through the machine, said nozzle chamber defined by first and second machine-wide stream guide walls and first and second side walls, each guide wall having an end disposed at said outlet gap;
• (b) at least one machine-wide lamella disposed in the nozzle chamber, said lamella separating at least two fiber suspension streams flowing through the headbox all the way to the outlet gap, said lamella having a body and a tip made from a hard material, said tip made from at least one of
• (i) a strip having a sharp tip-edge, said strip integrated into the body of the lamella, and
• (ii) a coating, said lamella being narrowed toward said coating forming the tip, said tip coating being integrated into the lamella at at least one of the two sides of the lamella, forming a sharp tip-edge.