Patent ID: 6050469
Filing Date: 2000-04-18
Classification: D01G

Abstract:
In combination, a non-consolidated fiber web and a device which transfers the non-consolidated fiber web, wherein said device comprises: a linear movable conveyor belt which carries and conveys the non-consolidated fiber web into a triangular-shaped array of closely adjacent cylindrical rollers wherein said triangular-shaped array of rollers consists of a lower heated calendering cylinder rotatable in a first direction, an upper calendering cylinder rotatable in a second direction wherein said second direction is opposite the first direction, and a suction cylinder having a suction sector which applies suction to the non-consolidated fiber web upstream of the lower calendering cylinder, said suction cylinder being substantially flush with said conveyor belt and being rotatable in a direction corresponding to a linear moving direction of said conveyor belt, said direction of rotation of said suction cylinder being opposite to said first direction of rotation, said suction cylinder further being substantially tangential to said lower calendering cylinder at a point which defines a pre-calendering zone, so that as the non-consolidated fiber web is transferred from said conveyor belt to said lower calendering cylinder, the non-consolidated fiber web passes between said suction cylinder and said conveyor belt where the non-consolidated fiber web is pressed, and is held against said suction cylinder by suction effect and driven in rotation to said pre-calendering zone, the non-consolidated fiber web being compressed by the suction cylinder and lower calendering cylinder as the fiber web passes through the pre-calendering zone, the non-consolidated fiber web adhering to the lower calendering cylinder under combined effects of heating and compression, so that the non-consolidated fiber web is entrained by the lower calendering cylinder up to said upper calendering cylinder.