Patent ID: 8349137

Claim:
A device for dewatering a material web ( 5 ) in a paper making machine after a web forming unit ( 16 ) and before a web thermal drying unit ( 11 ), comprising: a press belt ( 3 ) wrapping partly around and urged toward a press roll ( 1 ) to form a press zone at the press roll; said material web ( 5 ), carried into the dewatering device on a water-absorbing belt ( 4 ) arranged between the material web ( 5 ) and the press belt ( 3 ); a transfer belt ( 6 ) provided between the material web ( 5 ) and the press roll ( 1 ), on which transfer belt the material web ( 5 ) is carried after leaving the dewatering device; whereby the press belt ( 3 ) applies a direct pressing force to the water absorbing belt ( 4 ) and indirect force to the material web ( 5 ) in dependence on tension in the press belt and the diameter of the press roll ( 1 ) and, dewatering takes place radially outward of the press roll ( 1 ), from the material web ( 5 ) to the water absorbing belt ( 4 ).