According to the invention, the hood (2) forms the cantilever support for the suction press roller (1) during a replacement of the cover (8) of the suction press roller (1).

The first press nip (13) is formed between a felted suction press roller (1), which is simultaneously used as a pick-up roller, and a counter roller (18).

A vacuum roll has an inner cylinder defining an interior chamber.

The invention relates to a suction roll shell 9 having a plurality of through holes 7.

By increasing the open surface area of the suction roll the dewatering of the pulp is increased.

At least two vacuum boxes/chambers (16, 17) are fitted after the last suction roll (11).

In addition, the invention relates to an arrangement for improving the duration of a suction roll.

The invention concerns a seal construction for a suction roll in a paper machine.

In the direction of rotation of the suction roll (15), there is a doctor blade (13), which is as such known, with a blade holder (21) fitted to doctor (10) after doctor slat (12).

A hood (2) for collecting sprayed water is arranged above the suction press roller (1).

A sending roller (24) is rotated by a drive motor, and the roll staple (3) is rotated in the unwinding direction.

The invention also relates to an improved suction roll for a material web machine for improving the duration of the suction roll.

After the suction box (16), the web is guided, due to the effect of a vacuum of the suction roll (15), forwards on the surface of the wire loop on the side of the suction roll (15).

In the invention, the web (W) is separated from the upper wire (15) on the first suction block (a) of the suction roll (14), after which the web is affixed to the lower wire (17) on the second suction block (b) of said suction roll (14).

A sending roller (42) is caused to be in contact with the outer periphery of a roll staple (3) constituted of a large number of straight needles connected in a belt-like shape and made in a roll-like shape.