APPARATUS FOR THE MANUFACTURE OF FIBRES FROM AN ATTENUABLE MATERIAL BY MEANS OF GASEOUS CURRENTS INCLUDING MEANS FOR MODIFYING THEIR FLOW

摘要

At least one gas jet (5) is generated and is perturbed by means of a baffle (19) inserted in its path to establish counterrotating turbulences alongside a lamina flow region towards which a lace (G) of ductile substance is brought. The baffle member (19) comprises at least one component with a surface whose sections parallel to the axis of the orifice for emitting (32) the jet and to the lace (G) of ductile substance have a convex portion placed in the flow of the jet. The device also comprises a main gas stream generator (15) for forming with the jet an interaction zone where the substance is subjected to a second drawing stage. Means of support provided with control instruments make it possible to modify the relative positions and the interactions of the various instruments of the device with a view to compensating the various fluctuations of the fibre-forming conditions.