EP0928843A2 - Pressing arrangement - Google Patents

Abstract

The pressure differential is variable. Preferred features: The differential pressure is used to alter the line pressure differential between shoe pressing unit (12) and backing roller (14). The resulting differential pressure profile transverse to the web is variable and can be controlled. The differential pressure sets a controllable and preferably level line pressure in the roller gap (20). Differential pressure or line pressure differential is locally and continuously variable. To alter the differential pressure produced by the supports (24) of the shoe pressure unit (12), the internal contact pressure acting on the flexible press band (26) is altered. To alter the differential pressure produced by the supports (32) of the backing roller (14), internal contact pressure acting on the roller casing is altered. To vary both differential pressures the internal contact acting on the roller casing (30) is varied. Pressure adjustments are further detailed. Further salient features include the valve used to adjust pressure. Pressure differential adjustment is mechanical, hydraulic, pneumatic, manual, remote or in-situ, during maintenance or on-line. Various corrections are applied. A closed loop control circuit makes the adjustment. Rollers may be cambered. Angular dispositions are quantified.

Description

The invention relates to a press arrangement for treating a fibrous web, in particular paper and / or cardboard web, with a between a shoe press unit and a counter roll formed in the web running direction extended press nip and one between the counter roll and a further roll formed nip, the shoe press unit a rotating around a non-rotatable carrier, in the area of the extended Press nip by at least one support element on the carrier supported flexible press belt and the counter roll as a deflection compensation roll with a circumferential around a non-rotatable carrier Roll jacket is formed in the region of the extended press nip again supported by at least one support element on the carrier in question , and wherein the preferably pressurized fluid-operated support elements are designed and acted upon so that the generated by the support elements on the flexible press belt Shoe press unit or the roller jacket of the inner roller acting inner Contact pressure sets a differential pressure.

With such a press arrangement, in which the shoe press mostly is above, should also be in the nip controlled nip line force that is as flat as possible can be generated by a corresponding Differential pressure or a corresponding line force difference between the shoe press unit and the counter roller is reached. The differential pressure causes the in the extended nip between the Shoe press unit and the counter-acting line force not in full The circumference is balanced by the inner support elements of the counter roller becomes. The remaining force causes the counter roll to deform both in the extended nip formed with the shoe press unit, the be easily balanced by the flexible support element of the shoe press unit can, as well as in between the counter roller and the other roller formed nip. If the differential pressure is selected, for example, that a greater contact pressure is set in the shoe press unit than in the counter roll, so occurs between the counter roll and the other Roll formed nip a bulge of the counter roll. Because of this bulge can, for example, the counter roller and additional roller with less crowning for deflection compensation be carried out. With such less crowning the differential speeds between the center of the roller and the Roller ends are kept small. Between the shoe press unit and the counter-roller can thus in particular have such a line force difference are generated with a deflection of the counter roll in the nip causes and thus a reduction in the required crowning is made possible in this nip.

In a press arrangement known from DE-A-195 20 443.3 The type mentioned at the beginning is the differential pressure or the line force difference fixed to a constant value. A fixed differential pressure but now brings the same as a missing differential pressure The disadvantage is that the line force is at most very limited Set the range. This is due in particular to that the deformations dependent on the line force by the fixed crownings can no longer be compensated correctly and thus to deviations from the width across the web Lead pressure profile.

A known central roller has an additional row of support elements, provided in the direction of the nip towards the previous roller is and regulates the deflection compensation in this nip. Such an additional row of support elements is now significant additional effort and correspondingly expensive.

The aim of the invention is to provide a simple, inexpensive construction To create press arrangement of the type mentioned, in which the Line force in the nip can be set in a relatively wide range and the resultant in this nip transverse to the web running direction Pressing pressure profile can be varied without an additional support element rows the counter roller is required.

This object is achieved according to the invention in that the differential pressure is changeable. It is preferable with the differential pressure also the line force difference between the shoe press unit and the counter roller changeable.

Due to the variably adjustable differential pressure between the The shoe press unit and the counter roller can in particular cause the deformation variable in the nip between the counter roll and the other roll to be influenced. This means that the deflection is not otherwise controlled Roller gap line forces adjustable over a wide range, always ensuring an optimal baling cross profile is. Another advantage of the variably variable differential pressure between the shoe press unit and the counter roller is that with a targeted adjustment of the differential pressure cross profile corrections in nip formed between the counter roll and the further roll can be made. The result is also the moisture cross profile adjustable after the press in the desired manner. With a Change in the differential pressure or the line pressure difference between the shoe press unit and the counter roller also changes the deflection the counter roll in the nip and thus also the resulting one Pressure distribution. Here the pressure distribution changes only in the nip. A change in deflection of the counter roller in the extended press nip is compensated for by the flexible press shoe. It is possible to use the line forces acting on the fibrous web in at least one nip unchanged on the currently set hold desired value. Even if the line forces change there is always an optimal level line force in the adjacent press nips in that formed between the counter roll and the further roll Roll nip accessible. There are also corrections in this nip the line force to improve the moisture cross profile in the form of Edge relief or strain possible. In addition, the exchange the further roll forming the nip with the counter roll simplified another roller with a different stiffness, being different Rigidity for example on the material, the wall thickness or, in the case of a suction roll, can be traced back to the drilling pattern. In addition, there is also an easier adaptation to another Size of the deformation in the nip, for example by a changed vacuum in the further roller can be caused. Here can change the crowning of the counter roller that may have been necessary up to now and the further roller by a corresponding change in Bypassed pressure difference between the shoe press unit and the counter roller become.

It is particularly advantageous if the differential pressure or the line force difference is continuously changeable at least in some areas.

To change the differential pressure can, for example, by Support elements of the shoe press unit produced on their flexible press belt acting internal contact pressure or, for example, by generated the support elements of the counter roll, acting on the roll shell internal contact pressure can be changed. Basically, however, it is also possible that to change the differential pressure both by generated the support elements of the shoe press unit, on their flexible Press band acting internal contact pressure as well as that through the support elements the counter roll generated, acting on the roll shell inner Contact pressure is changeable.

In an expedient practical embodiment of the invention Press arrangement are the support elements of the shoe press unit and the support elements of the counter roll to a common pressure fluid line connected, wherein in the pressure fluid connection between the common pressure fluid line and the support element or elements Shoe press unit and / or in the pressurized fluid connection between the common pressure fluid line and the support element or elements Adjustable counter pressure roller are provided and the Differential pressure can be changed via this variable pressure reducing means.

The support elements of the shoe press unit and / or the support elements of the Counter roll can be sent individually, in groups or in total to the common Pressurized fluid line must be connected. To reduce pressure from groups connected to the common pressure fluid line Support elements can be between at least one, preferably each of these Groups of support elements and the common pressure fluid line adjustable pressure reducing means can be provided. To reduce the Pressure individually enclosed on the common pressure fluid line Support elements can be between at least one, preferably each of these individual support elements and the common pressure fluid line adjustable pressure reducing means can be provided.

In an expedient practical embodiment, the Pressure reducing means at least one variably adjustable valve.

In most cases it is useful if the differential pressure or the line force difference is adjustable from the outside.

The differential pressure or the line force difference can, for example, be mechanical, hydraulic, pneumatic, manual, remote controlled, on site, be adjustable starting from a control room and / or process-controlled.

In an expedient embodiment, the differential pressure is medium Predefinable characteristics depending on the line force in the nip adjustable. The differential pressure can also depend on the line force correction specifications be adjustable for the nip, the Line force correction specifications preferably via an electronic control can be entered and / or via corresponding signals of a process control system to be provided. The differential pressure can in particular also via a control system comprising at least one closed control loop be adjustable.

In an expedient practical embodiment is about the differential pressure the line force can be changed in a further nip, the is formed between the further roller and an additional roller. At the additional roller can be, for example, a suction roller act.

At least the counter roller and / or the one with it is expedient the further roll forming the nip is cambered. Such a crowning can due to the changeable differential pressure or the changeable Line force difference will be less than usual. In particular Such cases can also be dispensed with entirely become.

In a preferred embodiment of the press arrangement according to the invention is the shoe press unit by a shoe press roll with a flexible press jacket formed as a press belt.

The shoe press unit is expediently above the counter roller arranged.

In a preferred practical embodiment, the roller jacket the counter-roller at its ends not radially displaceable on the relevant Carrier stored.

In certain cases it may be appropriate if the level of action of the at least one support element of the counter roller with respect to the plane of action of the at least one support element of the shoe press unit is slightly inclined. In principle, however, it is also possible that the Plane of action of the at least one support element of the counter roll the plane of action of the at least one support element of the shoe press unit at least essentially coincides.

In an expedient practical embodiment, the pressure effective Areas of the support elements of the counter roller unequal to pressure-effective surfaces of the at least one support element of the Shoe press unit. An effect similar to that from the impact level of the extended press nip inclined support elements of the counter roller can accordingly in particular also be achieved in that the pressure-effective Areas of these support elements not equal to the surfaces of the support elements the shoe press unit. Because of the different inner Print areas are already connected to a common pressure line reached a differential line force between the two rollers. In addition can now variable pressure reducing agent in one or both supply lines be used to achieve the advantages already mentioned.

In the dependent claims, further advantageous embodiments of the Press arrangement according to the invention specified.

Figur 1

eine schematische Querschnittsdarstellung einer Ausführungsform einer Pressenanordnung mit drei Preßwalzen,

Figur 2

eine schematische Längsschnittdarstellung der in Figur 1 gezeigten Ausführungsform, in der auch die zu den Stützelementen geführten Druckfluidverbindungen gezeigt sind, und

Figur 3

eine schematische Querschnittsdarstellung einer weiteren Ausführungsform einer Pressenanordnung mit vier Preßwalzen.

The invention is explained below using exemplary embodiments with reference to the drawing; in this show:

Figure 1

2 shows a schematic cross-sectional representation of an embodiment of a press arrangement with three press rolls,

Figure 2

2 shows a schematic longitudinal sectional illustration of the embodiment shown in FIG. 1, in which the pressure fluid connections led to the support elements are also shown, and

Figure 3

is a schematic cross-sectional view of a further embodiment of a press arrangement with four press rolls.

In Figures 1 and 2 is a first in a purely schematic representation Embodiment of a treatment of a fibrous web 10 as in particular a press arrangement serving paper and / or cardboard web shown.

This press arrangement has one between a shoe press unit, here a shoe press roll 12, and a counter roll 14 formed in Web running direction L extended press nip 16 and one between the Counter roll 14 and another roll, here a suction roll 18, formed Nip 20.

The shoe press roll 12 arranged directly above the counter roll 14 has a rotating around a rotationally fixed carrier 22, in the area of extended press nip 16 by a support element 24 on the carrier 22nd supported, flexible press jacket 26 serving as a press belt.

The counter roller 14 is in the present case as a deflection compensation roller educated. It has a rotating around a non-rotatable carrier 28 Roller jacket 30, in the area of the extended press nip 16 by a row extending transversely to the web running direction L. Support elements 32 is supported on the carrier 28 in question. As with 1 can be seen, the suction roller 18 is obliquely below the counter roller 14 is arranged. The rollers 12, 14 and 18 are in one chair not shown stored. Through the press nips 16 and 20 run next to the fibrous web 10 drainage felts 34 for inclusion of water squeezed out of the fibrous web 10.

The hydraulic, in the form of an axially running bar on the carrier 22 supported support member 24 of the shoe press roll 12 is in the present Case provided with a concave support surface 36. Instead of one on one hydraulic pressure pad mounted bar is especially the Use of several support elements 24 possible. The lubrication of the Gap between the support surface 36 and the inner surface of the flexible Press jacket 26 can be done hydrostatically and / or hydrodynamically.

Through the concave support surface 36 with the approximately cylindrical counter-roller 14 formed in the web running direction L press nip 16.

The roll shell 30 of the counter roll 14 is not radial at its ends slidably mounted on the carrier 28.

In the present case, the action plane 38 of the support elements 32 is the Counter roll 14 opposite the action plane 40 of the support element 24 the shoe press roll 12 slightly inclined. The angle of inclination lies here α preferably in a range from about 2 ° to about 15 ° and in particular in a range from about 4 ° to about 8 °. Basically, however, it is also possible that the plane of action 38 of the support members 32 of the Counter roll 14 with the effective plane 40 of the support element 24 Shoe press roll 12 coincides at least substantially.

Since the roller jacket 30 of the counter-roller 14 has bearings 42 at the ends is fixed on the carrier 28, the effect of the inclination of the support elements 32 (cf. in particular FIG. 1) resulting deformation of the roll shell 30 of the counter roller 14 particularly strong in the middle area so that the roller jacket 30 there more strongly towards the suction roller 18 deformed.

In the present embodiment, the support element 24 is the Shoe press roll 12 and the support elements 32 of the counter roll 14 to one common pressure fluid line 44 connected. As taken from Figure 2 can be, the support members 32 of the counter roller 14 in present case in groups with this common pressure fluid line 44 connected.

The pressure fluid-actuated support elements 24 and 32 can be acted upon in such a way that that with respect to those generated by these support members 24, 32 the flexible press jacket 26 of the shoe press roll 12 or the roll jacket 30 of the counter roller 14 acting internal contact pressures a differential pressure sets, partly due to a different size the contact surfaces of the support elements 24, 32 can be determined. According to the invention this differential pressure can be changed. With this differential pressure is in particular the line force difference between the Shoe press roll 12 and the counter roll 14 changeable. Preferably also the transverse profile of the differential pressure resulting transversely to the web running direction L. between the shoe press roll 12 and the counter roll 14 changeable, so that in particular different differential pressures the width are adjustable. About the variable differential pressure between the shoe press unit 12 and the counter roller 14 are thus corresponding the line force in the nip 20 can also be changed, in this nip 20 adjustable at least substantially flat line forces are. The differential pressure or the line force difference can at least be continuously changeable in some areas. The differential pressure or the line force difference is adjustable from the outside in the present case. The setting can be, for example, mechanical, hydraulic, pneumatic, manual, remote controlled, on site, starting from a control room and / or process-controlled. The differential pressure can, for example by means of predefinable characteristics depending on the line force in the Roll gap 20 to be adjustable. In particular, it can also be dependent line force correction specifications for the nip 20 adjustable be. In the present case, the setting is made via an electronic Control 62. In particular, it is also possible that, for example, the respective line force correction specifications and / or the like via corresponding Process control system signals are provided. In addition can the differential pressure over at least one closed control loop comprehensive control system to be adjustable.

In the present embodiment is to change the differential pressure that generated by the support elements 32 of the counter roller 14 whose roller jacket 30 acting internal contact pressure can be changed (cf. Figure 2). In the present case there are in the pressure fluid connection between the common pressure fluid line 44 and the support elements 32 the counter roll 14 adjustable or variably adjustable pressure reducing means 46 provided, the differential pressure over this variable Pressure reducing agent 46 is changed. As can be seen from the figure 2 is to reduce the pressure of the groups to the common Pressurized fluid line 44 connected support elements 32 between each group of support members 32 and the common pressurized fluid line 44 each an adjustable or variably adjustable pressure reducing means 46 provided. In contrast, the support element 24 of the shoe press roll 12 directly connected to the common pressure fluid line 44. The pressure reducing means 46 can each be, for example include variably adjustable valve.

Due to the variably adjustable differential pressure between the shoe press roller 12 and the counter roller 14 can also the deformation in between the counter roll 14 and the suction roll 18 formed nip 20 variable to be influenced. This means that the deflection is not otherwise controlled Roll gap 20 line forces over a wide range adjustable, always ensuring an optimal baling cross profile is. With a targeted adjustment of the variable differential pressure between the shoe press roll 12 and the counter roll 14 can also Cross profile corrections in the between the counter roll 14 and the suction roll 18 formed nip 20 are made.

Because of the differential pressure that can be changed according to the invention, this can Bombing of the rollers can be kept relatively small. In particular Such a crowning can even be dispensed with in all cases become.

With the arrangement shown in Figure 2 is in the shoe press roll 12 generates a higher contact force than in the counter roller 8. For influencing of the cross section in the nip 20 in front of it can the reverse case may also be expedient, in which on the roller shell 30 of the counter roller 14 a higher contact pressure is exerted on the press jacket 26 of the shoe press roll 12. In this case, the Pressure reducing means 46 between the common pressure fluid line 44 and a desired number of support members or support member groups to use the shoe press roll 12. The reduced pressure must but still have such a value that in the between the Shoe press roll 12 and the counter roll 14 formed an extended press nip 16 the desired line force is generated. The nip 20 will now influenced in the opposite way. In this case it occurs an increase in the total deformation. In particular, this can be useful in relatively narrow paper machines where the purpose of Bombing reduction in the between the counter roll 14 and the further roll 18 formed nip 20 a subordinate role plays.

An even higher degree of variability is achieved when both in the Pressurized fluid connections to the shoe press roll 12 as well as in the pressurized fluid connections to the counter roll 14 variably adjustable pressure reducing means 46 can be used. The line forces in the nip 20 can then be adjusted in an even larger line force range, wherein in the nip 20 always creates a flat pressing force cross profile can be. Then, for example, edge corrections can be made via correction specifications the line force in the nip 20 in the positive direction (Edge overpressure) and in the negative direction (edge relief).

FIG. 3 is a schematic cross-sectional representation of another one Embodiment of a press arrangement with four press rolls shown.

This embodiment differs from that according to FIGS. 1 and 2 essentially in that viewed in the web running direction L before the nip 20, a further nip 48 is provided, which between the suction roller 18 and an additional one arranged below it Roll 50 is formed. This additional nip 48 is felted twice, while the two press nips 20 following in web running direction L and 16 are each simply felted. The through the further nip 48th guided top felt 52 also runs through the nip 20. The additional Roller 50 is in the loop of the underfelt passed through the nip 48 54 arranged. The fibrous web 10 is from the upper felt 52 in Area of a suction roll 56 taken over by a screen belt 58 before it is passed through the nip 48. Otherwise, this embodiment has essentially the same structure as that according to the Figures 1 and 2, corresponding parts with the same reference numerals are provided.

Thus, between the shoe press roll 12 and the counter roll 14 again generates a differential pressure or a line pressure difference 60, where the differential pressure or the line pressure difference 60 can be changed again and are preferably variable and infinitely adjustable. In the present The case is about the variable differential pressure or the variable line pressure difference 60 in particular between the shoe press roll 12 and the counter roll 14 the line force in the further nip 48 can also be changed. This differential pressure or this line pressure difference 60 can between the shoe press roll 12 and the counter roll 14 in particular be variable and infinitely adjustable. This changes again the deflection of the central or counter roll 14 in the nip 20 and thus the pressure distribution in this nip 20. It is possible to apply the line forces acting on the fibrous web 10 in the nip 20 and the extended press nip 16 on the hold the desired value. The setting of the line pressure difference 60 or the differential pressure also takes place in the present exemplary embodiment again via an electronic control 62. Basically the setting can be mechanical, hydraulic, pneumatic, manually operated, remote controlled, on site, starting from a control room and / or process-controlled. Here too is a second row of support elements unnecessary in the direction of the nip 20. The variable line force difference can be used in particular to influence the pressure distribution be drawn into the nip 20 without the respective desired line forces in the press nips 20, 16 and 48 changed become. Via the variable differential pressure or the variable line pressure difference can also in particular the line force in the nip 20 adjusted in a relatively large area in the desired manner become. In addition, there is a targeted influence on the conditions in the another nip 48 possible.

Reference list

10th

Fibrous web

12th

Shoe press roll

14

Counter roll

16

extended press nip

18th

further roller, suction roller

20th

Nip

22

non-rotatable carrier

24th

Support element

26

flexible press jacket

28

non-rotatable carrier

30th

Roller shell

32

Support elements

34

Drainage felts

36

Support surface

38

Impact level

40

Impact level

42

camp

44

common pressure fluid line

46

Pressure reducing agent

48

further nip

50

additional roller

52

Top felt

54

Bottom felt

56

Suction roll

58

Screen belt

60

Line pressure difference

62

electronic control

L

Web direction

α

Angle of inclination

Claims (28)

Press arrangement for treating a fibrous web (10), in particular paper and / or cardboard web, with a press nip (16), which is formed between a shoe press unit (12) and a counter roller (14) and is extended in the web running direction (L), and one between the counter roller (14 ) and a further roll (18) formed nip (20), the shoe press unit (12) rotating around a non-rotatable support (22) in the region of the extended press nip (16) by at least one support element (24) on the support (22 ) supported flexible press belt (26) and the counter-roller (14) is designed as a deflection compensation roller with a roller jacket (30) rotating around a non-rotatable support (28), which in the area of the extended press nip (16) again by at least one support element (32) is supported on the relevant carrier (28), and the preferably pressure fluid-actuated support elements (24, 32) are designed and acted upon in such a way that h the internal contact pressures generated by the support elements (24, 32) and acting on the flexible press belt (26) of the shoe press unit (12) or the roll jacket (30) of the counter-roll (14) set a differential pressure,
characterized by that the differential pressure is changeable. Press arrangement according to claim 1,
characterized by that the line pressure difference between the shoe press unit (12) and the counter roller (14) can be changed with the differential pressure. Press arrangement according to claim 1 or 2,
characterized by that the transverse profile of the differential pressure resulting transversely to the web running direction (L) can be changed, so that in particular different differential pressures can be set across the width. Press arrangement according to one of the preceding claims,
characterized by that the line force in the nip (20) can be changed via the differential pressure. Press arrangement according to claim 4,
characterized by that at least essentially flat line forces in the nip (20) can be set via the variable differential pressure. Press arrangement according to one of the preceding claims,
characterized by that the differential pressure or the line force difference can be changed continuously, at least in some areas. Press arrangement according to one of the preceding claims,
characterized by that to change the differential pressure generated by the support elements (24) of the shoe press unit (12), acting on the flexible press belt (26), the inner contact pressure. Press arrangement according to one of the preceding claims,
characterized by that to change the differential pressure generated by the support elements (32) of the counter-roller (14), acting on the roller shell (30), the inner contact pressure. Press arrangement according to one of the preceding claims,
characterized by that to change the differential pressure, both the internal contact pressure generated by the support elements (24) of the shoe press unit (12), acting on the flexible press belt (26), and the internal contact pressure generated by the support elements (32) of the counter-roller (14), on the roller shell ( 30) acting internal contact pressure is changeable. Press arrangement according to one of the preceding claims,
characterized by that the at least one support element (24) of the shoe press unit (12) and the at least one support element (32) of the counter-roller (14) are connected to a common pressure fluid line (44) and that in the pressure fluid connection between the common pressure fluid line (44) and the support element (s) (24) of the shoe press unit (12) and / or in the pressure fluid connection between the common pressure fluid line (44) and the support element (32) of the counter roller (14) adjustable pressure reducing means (46) are provided and the differential pressure can be changed via these variable pressure reducing means (46). Press arrangement according to claim 10,
characterized by that the support elements (24) of the shoe press unit (12) and / or the support elements (32) of the counter-roller (14) are each connected individually, in groups or as a whole to the common pressure fluid line (44). Press arrangement according to claim 11,
characterized by that an adjustable pressure reducing means (46) is provided to reduce the pressure of support elements (32) connected in groups to the common pressure fluid line (44) between at least one, preferably each of these groups of support elements (32) and the common pressure fluid line (44). Press arrangement according to claim 11 or 12,
characterized by that an adjustable pressure reducing means is provided to reduce the pressure of support elements individually connected to the common pressure fluid line between at least one, preferably each of these individual support elements and the common pressure fluid line. Press arrangement according to one of the preceding claims,
characterized by that the pressure reducing means (46) comprise at least one variably adjustable valve. Press arrangement according to one of the preceding claims,
characterized by that the differential pressure or the line force difference is adjustable from the outside. Press arrangement according to one of the preceding claims,
characterized by that the differential pressure or the line force difference can be adjusted mechanically, hydraulically, pneumatically, manually, remotely, on site, starting from a control room and / or process-controlled. Press arrangement according to one of the preceding claims,
characterized by that the differential pressure can be set by means of predefinable characteristics as a function of the line force in the nip (20). Press arrangement according to one of the preceding claims,
characterized by that the differential pressure can be set as a function of line force correction specifications for the nip (20), the line force correction specifications preferably being able to be input via an electronic control (62) and / or being provided via corresponding signals of a process control system. Press arrangement according to one of the preceding claims,
characterized by that the differential pressure is adjustable via a control system comprising at least one closed control loop. Press arrangement according to one of the preceding claims,
characterized by that the line force can be changed in a further roller gap (48) which is formed between the further roller (18) and an additional roller (50) via the differential pressure. Press arrangement according to one of the preceding claims,
characterized by that at least the counter roller (14) and / or the further roller (18) is convex. Press arrangement according to one of the preceding claims,
characterized by that all rollers are cambered. Press arrangement according to one of the preceding claims,
characterized by that the shoe press unit is formed by a shoe press roll (12) with a flexible press jacket (26) as a press belt. Press arrangement according to one of the preceding claims,
characterized by that the shoe press unit (12) is arranged above the counter roller (14). Press arrangement according to one of the preceding claims,
characterized by that the roller jacket (30) of the counter-roller (14) is mounted at its ends so as not to be radially displaceable on the carrier (28) in question. Press arrangement according to one of the preceding claims,
characterized by that the plane of action (38) of the at least one support element (32) of the counter-roller (14) is slightly inclined relative to the plane of action (40) of the at least one support element (24) of the shoe press unit (12), the angle of inclination (α) preferably being in a range from about 2 ° to about 15 ° and in particular in a range from about 4 ° to about 8 °. Press arrangement according to one of claims 1 to 25,
characterized by that the plane of action (38) of the at least one support element (32) of the counter-roller (14) coincides at least substantially with the plane of action (40) of the at least one support element (24) of the shoe press unit (12). Press arrangement according to one of the preceding claims,
characterized by that the pressure-effective surfaces of the support elements (32) of the counter-roller (14) are not equal to the pressure-effective surfaces of the at least one support element (24) of the shoe press unit (12).

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