Paper making machine comprising a forming zone in which a layer of fibrous material is formed, a zone for forced removal of water from the fibrous material layer downstream of the forming zone, a drying zone downstream of the forced removal of the water, and a paper collection zone downstream of the drying zone, and means for transporting the layer of fibrous material through said zones of the machine along a path that follows a predetermined transport direction (MD). The forced water removal zone comprises, in turn, two consecutive zones (Z1, Z2) along said transport direction (MD), in which a capillary roller (44) and a pressure element (4S) with a respective counter-roller (4C) are respectively arranged, acting consecutively on the layer of fibrous material upstream of the drying zone.

Paper making machine comprising a forming zone in which a layer of fibrous material is formed, a zone for forced removal of water from the fibrous material layer downstream of the forming zone, a drying zone downstream of the forced removal of the water, and a paper collection zone downstream of the drying zone, and means for transporting the layer of fibrous material through said zones of the machine along a path that follows a predetermined transport direction (MD). The forced water removal zone comprises, in turn, two consecutive zones (Z1, Z2) along said transport direction (MD), in which a capillary roller (44) and a pressure element (4S) with a respective counter-roller (4C) are respectively arranged, acting consecutively on the layer of fibrous material upstream of the drying zone.

The machine (10) comprises a Yankee cylinder (35), having a cylindrical side surface (35S), rotating around an axis (35A) thereof, and a continuous flexible member (17) comprising a first surface (17A) suitable to receive a layer of cellulose pulp (S), comprising cellulose fibers and water, and a second surface (17B), opposite to the first surface (17A). A guide roller (31) is also provided, around which the continuous flexible member (17) is driven. The second surface (17B) of the continuous flexible member (17) is in contact with the first guide roller (31). The machine further comprises a first pressure roller (33) around which the continuous flexible member (17) is driven, arranged downstream of the guide roller (31) with respect to a feeding direction of the layer of cellulose pulp (S). The first pressure roller (33) and the Yankee cylinder (35) define a first pressure nip (34), inside which the continuous flexible member (17) is pressed by means of the first pressure roller (33) against the cylindrical surface (35S) of the Yankee cylinder (35) in order to remove water from the layer of cellulose pulp (S) through the continuous flexible member (17).

The machine (10) comprises a Yankee cylinder (35), having a cylindrical side surface (35S), rotating around an axis (35A) thereof, and a continuous flexible member (17) comprising a first surface (17A) suitable to receive a layer of cellulose pulp (S), comprising cellulose fibers and water, and a second surface (17B), opposite to the first surface (17A). A guide roller (31) is also provided, around which the continuous flexible member (17) is driven. The second surface (17B) of the continuous flexible member (17) is in contact with the first guide roller (31). The machine further comprises a first pressure roller (33) around which the continuous flexible member (17) is driven, arranged downstream of the guide roller (31) with respect to a feeding direction of the layer of cellulose pulp (S). The first pressure roller (33) and the Yankee cylinder (35) define a first pressure nip (34), inside which the continuous flexible member (17) is pressed by means of the first pressure roller (33) against the cylindrical surface (35S) of the Yankee cylinder (35) in order to remove water from the layer of cellulose pulp (S) through the continuous flexible member (17).

A suction roll includes: a cylindrical shell having an internal lumen and a plurality of through holes; a suction box positioned in the lumen of the shell; a suction source operatively connected with the suction box; at least one seal strip attached to the suction box and configured to assist in forming a seal between the suction box and the shell; a sensor attached to the seal strip; and a controller operatively connected with the sensor. The sensor is configured to convey signals to the controller, the signals being processed in the controller to provide data on the seal strip on at least one of temperature, wear, vibration, and pressure.

A suction roll includes: a cylindrical shell having an internal lumen and a plurality of through holes; a suction box positioned in the lumen of the shell; a suction source operatively connected with the suction box; at least one seal strip attached to the suction box and configured to assist in forming a seal between the suction box and the shell; a sensor attached to the seal strip; and a controller operatively connected with the sensor. The sensor is configured to convey signals to the controller, the signals being processed in the controller to provide data on the seal strip on at least one of temperature, wear, vibration, and pressure.

A forming section, commonly called wet part, of a fourdrinier machine includes a rotatable breast roll, a rotatable couch roll, a forming mesh disposed between said breast roll and said couch roll, wherein said forming mesh is tangent to a lower portion of said couch roll, a fabric mesh which is tangent to said couch roll, wherein the tangent point of said fabric mesh and said couch roll coincides with or is located front of the tangent point of said forming net and said couch roll, wherein said fabric mesh and said forming net are attached to part of the outer surface of said couch roll in an inner and outer manner, a dewatering unit disposed on the rear surface of said forming mesh, a headbox disposed above said breast roll for flowing pulp slurry to said forming mesh and a press roll disposed against on said couch roll to form a pressing zone between said press roll and said couch roll so as to press and dewater said wet fiber web formed on said forming mesh on the surface of said fabric mesh.

A forming section, commonly called wet part, of a fourdrinier machine includes a rotatable breast roll, a rotatable couch roll, a forming mesh disposed between said breast roll and said couch roll, wherein said forming mesh is tangent to a lower portion of said couch roll, a fabric mesh which is tangent to said couch roll, wherein the tangent point of said fabric mesh and said couch roll coincides with or is located front of the tangent point of said forming net and said couch roll, wherein said fabric mesh and said forming net are attached to part of the outer surface of said couch roll in an inner and outer manner, a dewatering unit disposed on the rear surface of said forming mesh, a headbox disposed above said breast roll for flowing pulp slurry to said forming mesh and a press roll disposed against on said couch roll to form a pressing zone between said press roll and said couch roll so as to press and dewater said wet fiber web formed on said forming mesh on the surface of said fabric mesh.

The invention relates to a press for a machine for producing a fibrous material web, including at least one press nip formed between a press roller and a counter press roller of the press for guiding through the fibrous material web in a dehydrating manner, and two band shaped covers, which are each guided by multiple guide rollers in continuous circulation, so as to run together through the press nip, so that the fibrous material web is guided through sandwiched between said covers, and then separated again at a separation point, in order to continue guiding the fibrous material web on the one cover and separate it from the other cover. One guide roller of the guide rollers arranged at the separation point is a suctioned guide roller of the one cover, to hold the fibrous material web on the one cover at the separation position.

The invention relates to a press for a machine for producing a fibrous material web, including at least one press nip formed between a press roller and a counter press roller of the press for guiding through the fibrous material web in a dehydrating manner, and two band shaped covers, which are each guided by multiple guide rollers in continuous circulation, so as to run together through the press nip, so that the fibrous material web is guided through sandwiched between said covers, and then separated again at a separation point, in order to continue guiding the fibrous material web on the one cover and separate it from the other cover. One guide roller of the guide rollers arranged at the separation point is a suctioned guide roller of the one cover, to hold the fibrous material web on the one cover at the separation position.