Patent ID: 7107652

Claim:
A former head of the kind used for dry forming of fibrous tissue, where a fiber material mixed with air is conducted to at least one rotating perforated drum in a former head by injection, said drum is provided internally with fluidising means constituted by air nozzle means arranged longitudinally of the drum on at least one air conveying tube with substantially with the same length as the drum and arranged for fluidising the fibers injected, wherein said nozzle means are constituted by a slotted air nozzle extending longitudinally of the drum and with substantially with the same length as the drum and having adjustable nozzle lips preferably directed towards the internal surface of the drum and that the longitudinal conveying tube of the slotted air nozzle is made with perforations through which the drum is supplied an amount of air, and where the conveying tube is equipped with control means for regulating the air flow through the perforations.