Patent ID: 6159341
Filing Date: 2000-12-12
Classification: D21F

Abstract:
A wire section for forming a multi-ply fiber web, the wire section comprising:a belt on which a first fiber ply is formed;a twin-wire part including a first wire section wire and a second wire section wire defining a gap former;a forming roll at which the first and second wires define a gap for receiving fiber suspension at the beginning of the gap former; the first and second wires transporting the fiber suspension to the forming roll without actively dewatering the fiber suspension then wrapping over and advancing past the forming roll;first guide elements for causing the first and second wires to run together for supporting a layer of fiber suspension between the first and second wires and forming a second fiber ply;a combining section for combining the first and second plies wherein the belt has a first orientation at the combining section and wherein the second ply is above the first ply and for forming the multi-ply fiber web in the combining section;the twin-wire part being upstream of the combining section with respect to a running direction of the first belt;after the first and second wires run together to form the second fiber ply, the first and second wires being supported to separate so that the second fiber ply continues supported on the first wire and the first wire with the second ply entering the combining section; second guide elements supporting the first wire as it enters the combining section to orient the first wire at an angle with respect to the first orientation of the first belt entering the combining section; andthird guide elements for guiding the second wire so as to not enter the combining section.