EP1754822A2 - Procédé d'opération d'un dispositif de pressage - Google Patents

Procédé d'opération d'un dispositif de pressage Download PDF

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Publication number
EP1754822A2
EP1754822A2 EP06016432A EP06016432A EP1754822A2 EP 1754822 A2 EP1754822 A2 EP 1754822A2 EP 06016432 A EP06016432 A EP 06016432A EP 06016432 A EP06016432 A EP 06016432A EP 1754822 A2 EP1754822 A2 EP 1754822A2
Authority
EP
European Patent Office
Prior art keywords
press
nip
roll
central
press nip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06016432A
Other languages
German (de)
English (en)
Other versions
EP1754822A3 (fr
EP1754822B1 (fr
Inventor
Daniel Gronych
Robert Koplin
Klaus Hermann
Georg Dr. Kleiser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1754822A2 publication Critical patent/EP1754822A2/fr
Publication of EP1754822A3 publication Critical patent/EP1754822A3/fr
Application granted granted Critical
Publication of EP1754822B1 publication Critical patent/EP1754822B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • D21F3/045—Arrangements thereof including at least one extended press nip
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D21F3/083—Pressure rolls perforated
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D21F3/086—Pressure rolls having a grooved surface
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/086—Substantially impermeable for transferring fibrous webs

Definitions

  • the invention relates to a method for operating a press arrangement serving to produce and / or treat a fibrous web, in particular paper or board web, with at least one press nip, through which the fibrous web is passed together with a transfer belt. It further relates to a corresponding operable press arrangement.
  • the fibrous or paper web is transferred from a transfer belt or an at least substantially impermeable dewatering medium, for example a felt, to a smooth central roller.
  • a transfer belt or an at least substantially impermeable dewatering medium for example a felt
  • this can basically still have a certain residual permeability.
  • On the smooth central roller is a further pressing in an additional nip.
  • An example of such a press is the so-called "DuoCentri II" press. This can also be provided with a shoe press nip as a preceding nip or as the last nip.
  • a free train is required, in which the paper web is unsupported pulled by a covering medium on the drying wire. In such a free train, it often comes to a web break.
  • the band can, as already mentioned, also have a residual permeability.
  • the service life of a transfer belt or impermeable belt serving, for example, as a central belt depends essentially on the height of the peak pressure.
  • roller presses have the property of producing extremely high peak pressures, since the pressing load is applied only to a small area. There is thus the risk of damage to the central belt. In any case, its life is significantly reduced. In the case of shorter central bands, the result is correspondingly shorter circulation times, so that the service life can definitely be regarded as critical, especially with a higher mechanical resistance. So far, no shorter belts were used in the production plants due to the high mechanical load and short running times. However, longer central belts now require a cellar guide and possibly a corresponding conversion of the press pulp, which involves considerable costs brings.
  • central belts were used from a length of 20 to 25 m, and due to the required Kellerfilz operation always a corresponding conversion of the existing pulper was required.
  • central belts which at a web or machine speed of 900 m / min a belt length of about 14 m, at a machine speed of 1000 m / min a belt length of about 18 m and at a machine speed of 750 m / min partially also had a band length of 20.5 m.
  • the number of cycles, ie the number of cycles of a respective central band during its run time is about 16 million cycles for a typical central or transfer belt.
  • the relevant key figure is the running time in days.
  • the usual systems require a value of 0.0155 or larger for the ratio transfer belt length / machine speed for a sufficient running time in days with a fixed number of cycles.
  • the impermeable belts previously available on the market are used in paper machines in most cases in individual shoe press nips, where the mechanical stress of the tape is relatively low. In contrast, the life or number of cycles, i. greatly limits the number of passes of the belt during its travel time to the impermeable belts previously available on the market when used in a central roll press.
  • the aim of the invention is to provide an improved method and an improved press arrangement of the type mentioned, with which the mechanical stress of the transfer belt, in particular a short belt, which wraps around the central roller of a central roller press, in particular as so-called central belt, is lowered.
  • This object is achieved according to a first aspect of the invention in terms of the method in that the peak pressure is selected in the press nip ⁇ 10 MPa.
  • the ratio transfer belt length (m) / web travel speed (m / min) ⁇ 0.0155, in particular ⁇ 0.014 and preferably ⁇ 0.01 can be advantageously selected.
  • the peak pressure in the press nip is advantageously chosen to be ⁇ 8 MPa and preferably ⁇ 6 MPa.
  • the press nip in question may be formed by a roll nip or by a shoe press nip.
  • the peak pressure occurs in the press nip at the point with the smallest possible spacing of the press rolls and can be measured by pressure-sensitive measuring sheets which function according to a chemical process or as sensors with measured data output.
  • an at least substantially impermeable band can be used as the transfer band.
  • an impermeable tape may have a residual permeability.
  • the line load in the first press nip ⁇ 100 kN / m provided in the web running direction is considered and / or the line load in the web running direction second provided on the central roll press nip in the case of a roll nip ⁇ 120 kN / m and in the case of a shoe press nips ⁇ 1000 kN / m is selected.
  • Due to this embodiment of the method can be achieved for the transfer belt or the central roller wrapping impermeable band without the use of a special tape a relatively long life or high life or number of cycles, ie high number of cycles of the tape during its term.
  • This is achieved according to the present first aspect of the invention primarily by a corresponding reduction of the peak pressure.
  • the dry content loss resulting from the corresponding relief of at least one respective nip provided on the central roll can be at least partially compensated for by corresponding increase of the line load in at least one other nip and / or a shoe nip provided on the central roll.
  • the load of the transfer belt is reduced in favor of the life or number of cycles.
  • this brings considerable advantages not only in the use of a transfer belt offering a relatively lower mechanical resistance, but also in particular when using a transfer belt which offers a relatively higher mechanical resistance.
  • shorter belts can now be used in which the service life is critical due to the shorter circulation times.
  • identification number length m machine speed ( m / min )
  • the number of cycles i. Number of rounds of the transfer belt increase during its term, and it is possible, e.g. a central band with a much smaller, defined by the ratio band length / machine speed characteristic at about the same, i. in particular to drive a slightly lower or slightly higher duration in days.
  • ratio band length / machine speed must be selected to be large in order to achieve a sufficient running time in days for a predeterminable number of cycles.
  • the previously known systems need to achieve a sufficient duration in days at a fixed predetermined number of cycles defined by the ratio band length / machine speed index of 0.0155 or higher.
  • the transfer belt there is an increase in transit time of the transfer belt, in particular an increase in transit time of a relatively shorter belt with a small characteristic defined by the belt length / machine speed ratio, where
  • the transfer belt can be a central belt that wraps around the central roller of a central roller press.
  • a suction press roller As a counterpressure unit with which the central roller forms the first press nip provided on this central roller, in particular a suction press roller can be used.
  • This counterpressure unit with which the central roller forms the first press nip provided on this central roller, is expediently assigned a further pressing unit in order to form a press nip preceding the two press nips on the central roller.
  • This preceding press nip can be formed by a roll nip or by a shoe press nip.
  • the second press nip provided on the central roll may be formed by a roll nip or by a shoe press nip.
  • the line load in the first press nip provided on the central roll ⁇ 100 kN / m.
  • the line load in this first press nip provided on the central roll is preferably selected to be ⁇ 80 kN / m.
  • the line load in the second press nip provided on the central roll can be selected to be ⁇ 120 kN / m. It is preferred the line load in this second provided on the central roller press nip ⁇ 100 kN / m selected.
  • the line load in the press nip preceding the two press nips on the central roll is advantageously selected to be ⁇ 70 kN / m in the case of a roll nip.
  • the line load in this roll nip, which precedes the two press nips on the central roll is preferably selected to be ⁇ 90 kN / m.
  • the line load in this preceding shoe press nip is advantageously chosen to be ⁇ 120 kN / m and preferably ⁇ 150 kN / m.
  • a shoe press unit is assigned, which may preferably be formed by a shoe press roll.
  • the line load in the roll nip provided on the central roll is advantageously selected to be ⁇ 80 kN / m.
  • the line load in this preceding roll nip is preferably selected to be ⁇ 50 kN / m.
  • the line load in the shoe press nip provided on the central roller may advantageously be selected to be ⁇ 1200 kN / m.
  • the line load in this shoe press nip provided on the central roller is preferably selected to be ⁇ 1000 kN / m.
  • the line load in the press nip preceding the two press nips on the central roll is advantageously selected to be ⁇ 70 kN / m in the case of a roll nip.
  • the line load is preferably chosen to be ⁇ 90 kN / m in this roll nip preceding the two press nips on the central roll.
  • the line load in the shoe press nip provided on the central roller can advantageously be selected to be ⁇ 800 kN / m.
  • the line load in this shoe press nip provided on the central roller is preferably chosen to be ⁇ 1000 kN / m.
  • the line load in the press nip preceding the two press nips on the central roll is expediently chosen to be ⁇ 120 kN / m and preferably ⁇ 150 kN / m in the case of a shoe press nip.
  • the coverings of at least one press roll, at least one shoe press roll and / or the central roll can advantageously also be adapted.
  • At least one roller of the press arrangement is covered with rubber or polyurethane or with a similar soft other plastic in order to reduce the peak pressure in a respective nip.
  • Roller covers are already known which bring a certain reduction of the peak pressure with it.
  • a plastic having a hardness in a range of about 2 to about 90 P & J is selected.
  • Particularly suitable and preferred is a respective roll cover made of a plastic having a hardness in a range of about 5 to about 40 P & J, wherein according to a preferred practical embodiment of the method according to the invention for a respective roll cover a plastic having a hardness in a range of about 7 to about 20 P & J is chosen.
  • cover qualities that meet these requirements include brands such as PolyDyne, Aqualis, G2000 as polyurethane or MagnaPress, and TopPress as rubber-based covers.
  • the thickness of the cover of at least one roller delimiting the respective press nip in a range from approximately 4 to approximately 50 mm. Particularly good results are achieved with a reference thickness in a range of about 10 to about 40 mm. In view of the particularly good results achieved, the thickness of a respective roll cover is preferably selected in a range of about 12 to about 30 mm.
  • a respective roll cover which preferably consists of incompressible plastic material, is additionally or alternatively provided with bores.
  • the incompressible plastic material can deform under pressure into these holes, so that the respective nip wider and the peak pressure is reduced accordingly.
  • the diameter of a respective bore is selected in a range of about 0.5 to about 10 mm.
  • the diameter of a respective bore is in a range of about 1.5 to about 8 mm, wherein the bore diameter according to a particularly advantageous Embodiment is selected in a range of about 2 to about 5 mm.
  • the holes are particularly advantageous when the open area of the respective roll cover is selected in a range of about 5 to about 40% of the roll surface. It is particularly advantageous if the open area of a respective roll cover lies in a range of about 20 to about 30% of the roll surface.
  • a respective roll cover which preferably consists of incompressible plastic material, can also be provided with a crease to reduce the peak pressure on its surface.
  • Such a scoring of the plastic cover on the surface causes a widening of the respective press nips.
  • the incompressible plastic material may expand under pressure into these grooves.
  • the groove width is selected in a range of about 0.2 to about 5 mm.
  • the groove width is in a range of about 0.4 to about 2 mm.
  • the land width between adjacent grooves is advantageously selected in a range of 0.5 to about 10 mm.
  • the web width is in a range between about 1 to about 7 mm. It is particularly advantageous if the web width between adjacent grooves is selected in a range between about 1.5 to about 5 mm.
  • the ratio of land width to groove depth is advantageously selected in a range between about 0.2 to about 10.
  • a ratio of ridge width to groove depth in a range between about 0.5 to about 5.
  • the ratio of ridge width to groove depth in a range between about 0.8 to about 2 , 0 chosen.
  • both rolls can be provided with a grooved and / or drilled roll cover. If both rolls of a respective press nips are each provided with a grooved or drilled roll cover, the result is a softer nip with lower peak pressures.
  • the transfer belt is grooved.
  • the transfer belt is softer.
  • the nip width is increased and the peak pressure is lowered.
  • the groove depth ⁇ 80% of the strip thickness is selected.
  • the thickness of the impermeable belt wrapping around the center roll is preferably in a range of about 1 to about 10 mm.
  • An optimal groove geometry is obtained when the ratio of land width to groove depth in a range for the grooved impermeable tape between about 0.5 and about 5 is selected.
  • this ratio of ridge width to groove depth is in a range between about 0.8 and about 2.
  • the roll diameter determines the achievable nip length.
  • rollers with a respective diameter> 450 mm are used.
  • the roll cover may be associated with the press roll associated with the central roll for forming the first roll nip provided at that central roll and / or the roll cover of the press roll , which is assigned to the central roller for forming the second roller nip provided on this central roller, and / or the roller cover of the central roller is designed or adapted accordingly.
  • the line load in the press nip preceding the two press nips on the central roll is chosen to be ⁇ 70 kN / m in the case of a roll nip, the line load being preferably ⁇ 90 kN / m.
  • the line load in this nip press nip is advantageously chosen to be ⁇ 120 kN / m, and preferably ⁇ 150 kN / m.
  • the reduction is made the peak pressure advantageously the roll cover of the press roll, which is associated with the central roll to form the first provided on this central roll press nips and / or the roll cover of the central roll executed or adapted accordingly.
  • the resulting dry content loss is advantageously at least partially compensated by the line load in the two press nips on the press nip preceding the central roll in the case of a roll nip ⁇ 70 kN / m, preferably ⁇ 90 kN / m and in the case of a shoe press nip advantageously ⁇ 120 kN / m, preferably ⁇ 150 kN / m is selected.
  • the line load in the second provided on the central roller designed as a shoe press nip Pressnip ⁇ 800 kN / m, preferably ⁇ 1000 kN / m is suitably selected to compensate for the dry content loss.
  • said object with respect to the method is achieved by removing entrained air and water on the inside of the transfer belt, and / or by removing contaminants present on the inside and / or outside of the transfer belt.
  • the removal of air and water or the removal of contaminants is preferably carried out by means of at least one scraper and / or at least one spray tube.
  • the higher service life or running time of the transfer belt or the central roller encircling impermeable belt is thus achieved inter alia by the nip width and corresponding to the peak pressure in the press nip reducing design features of the press rolls or the stringing elements, the peak pressures in particular by a suitable choice of process parameters , in particular line loads, can be reduced.
  • the press arrangement advantageously operable according to the method of the invention comprises at least one press nip, through which the fibrous web is passed together with a transfer belt.
  • the respective press nip can be formed either by a roller nip or a shoe press nip.
  • the transfer belt is preferably formed by an at least substantially impermeable belt, wherein this impermeable belt can in principle have a residual permeability.
  • the transfer belt wraps around a central roll, which form two press nips with two counterpressure units, wherein as a counterpressure unit with which the central roll forms the first press nip provided on this central roll, preferably a suction press roll is provided and / or the counterpressure unit the central roller forms the first press nip provided on this central roller, preferably a further press unit is assigned to form a press nip preceding the two press nips on the central roller.
  • the press nip preceding the two press nips on the central roll can be formed by a nip or by a nip.
  • the counterpressure unit with which the central roller forms the first press nip provided on this central roller, can therefore be associated, in particular, as a further press unit, with a shoe press unit, wherein this shoe press unit is preferably formed by a shoe press roller.
  • both press nips provided on the central roll can each be formed by a roll nip, or the press nip provided on the central roll in the web running direction can be formed by a nip and the second press nip provided on the central roll can be formed by a nip.
  • the central roller may thus be associated with a shoe press unit, which is preferably formed by a shoe press roll.
  • the hardness of the transfer belt is ⁇ 30 P & J in the uncompressed belt state under standard conditions for the inside and outside of the belt.
  • At least one roll is covered with rubber or polyurethane or with a similar soft other material or plastic.
  • a respective roll cover is advantageously made of a plastic having a hardness in a range of about 2 to about 90 P & J, preferably having a hardness in a range of about 5 to about 40 P & J and preferably having a hardness in a range of about 7 to about 20 P & J.
  • the thickness of a respective roll cover in a range of about 4 to about 50 mm, in particular in one area from about 10 to about 40 mm, and preferably within a range of from about 12 to about 30 mm.
  • a respective roll cover which preferably consists of incompressible plastic material, can in particular also be provided with bores. These holes can only partially or completely penetrate the respective roll cover.
  • the diameter of a respective bore is advantageously in a range of about 0.5 to about 10 mm, in particular in a range of about 1.5 to about 8 mm, and preferably in a range of about 2 to about 5 mm.
  • bores prove particularly advantageous in the case of an open area of a respective roll cover in a range of about 5 to about 40% of the roll surface, and preferably in a range of about 20 to about 30% of the roll surface.
  • a respective roll cover which preferably consists of incompressible plastic material, may also be provided with a scoring on its surface.
  • the groove width is expediently in a range of about 0.2 to about 5 mm, and preferably in a range of about 0.4 to about 2 mm.
  • the web width between adjacent grooves is advantageously in a range between about 0.5 to about 10 mm, in particular in a range between about 1 to about 7 mm, and preferably in a range between about 1.5 to about 5 mm.
  • the ratio of web width to groove depth is advantageously in a range between about 0.2 to about 10, in particular in a range between about 0.5 to about 5, and preferably in a range between about 0.8 to about 2.0.
  • a respective roll cover is both drilled and grooved.
  • At least part of the respective roller cover completely penetrating bore can serve as suction holes at the same time.
  • the scoring is preferably provided on the inside of the transfer belt.
  • the groove depth is preferably ⁇ 80% of the strip thickness.
  • the thickness of the transfer belt or impermeable belt is advantageously in a range of about 1 to about 10 mm.
  • the ratio of land width to groove depth is in a range between about 0.5 and about 5, and preferably in a range of about 0.8 and about 2.
  • the rollers are preferably provided with a respective diameter> 450 mm.
  • both press nips provided on the central roll are each formed by a roll nip
  • the roll cover of the press roll which is assigned to the central roll for forming the first roll nip provided on this central roll and / or the roll cover of the press roll which forms the central roll to form the first roll nip is associated with the second provided at this central roller roller nips and / or the roller cover of the central roller executed or adapted accordingly.
  • first press nip provided on the central roll is formed by a roll nip and the second press nip provided on the central roll is formed by a shoe press nip, then advantageously the roll cover of the press roll is associated with the central roll to form the first press nip provided on this central roll and / or Roller cover of the central roller designed or adapted accordingly.
  • At least one scraper and / or at least one spray tube is provided to remove entrained on the inside of the transfer belt air and water and / or on the inside and on the outside of the impermeable belt existing contaminants.
  • the sole figure of the drawing shows a schematic representation of an exemplary embodiment of a press arrangement 10 for the treatment of a fibrous web, which may be in particular a paper, board or tissue web.
  • the press arrangement 10 can therefore be part of a paper machine, in particular. It can be operated in particular according to the method according to the invention.
  • the press arrangement 10 comprises a central roller 14 looped by a transfer belt, here for example an at least substantially impermeable belt 12, which has a suction press roller 16, a first press nip 18 provided on this central roller 14 and a shoe press unit , here a shoe press roll 20, a second press nip 22 provided on this central roll 14 forms.
  • the Saugpresswalze 16 and the shoe press roll 20 thus serve each as a counter-press unit to the central roller 14 to the two in the web running direction L consecutive, provided on the central roller 14 Press nips 18 and 22 to form.
  • the impermeable tape 12 may have residual permeability.
  • the suction press roll 16 is a further press unit, here a shoe press unit such as in particular a shoe press roll 24, assigned to form a press nip 26 preceding the two press nips 18, 22 on the central roll 14.
  • a shoe press unit such as in particular a shoe press roll 24, assigned to form a press nip 26 preceding the two press nips 18, 22 on the central roll 14.
  • a circulating belt 28 e.g. a felt, led by the fibrous web was previously taken over by a wire 30 of a former 32.
  • the air-permeable belt 28 is guided in the transition region around an evacuated guide roller 34.
  • the preceding press nip 26 can therefore be double felted in particular.
  • the fibrous web, together with the band 28, is guided further around the suction press roll 16 and subsequently into the first press nip 18 provided on the central roll 14, in the region of which it is taken over by the impermeable strip 12 wrapping around the central roll 14.
  • the fibrous web, together with the impermeable belt 12 is guided further around the central roll 14 into the second press nip 22 provided on this central roll 14, which, in the present case, is the same as the preceding press nip 26 Schuhpressnip is executed.
  • a roll nip is formed between the suction press roll 16 and the central roll 14.
  • the shoe press roll 20 associated with the central roll 14 is also recessed from a circulating belt 38, e.g. a felt, entwined.
  • the fibrous material is e.g. taken over by a drying wire 40 a drying section 42 of the impermeable tape 12, wherein the drying wire 40 is guided in the transfer area to a sucked guide roller 44.
  • the fibrous web is then fed, for example, to a first drying cylinder 46 of the drying section 42.
  • the fibrous web can also be transferred to another unit, e.g. a smoothing device, the paper machine are passed.

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  • Paper (AREA)
EP20060016432 2005-08-19 2006-08-07 Dispositif de pressage avec une bande de transfert Not-in-force EP1754822B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510039300 DE102005039300A1 (de) 2005-08-19 2005-08-19 Verfahren zum Betreiben einer Pressenanordnung

Publications (3)

Publication Number Publication Date
EP1754822A2 true EP1754822A2 (fr) 2007-02-21
EP1754822A3 EP1754822A3 (fr) 2011-11-30
EP1754822B1 EP1754822B1 (fr) 2013-10-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060016432 Not-in-force EP1754822B1 (fr) 2005-08-19 2006-08-07 Dispositif de pressage avec une bande de transfert

Country Status (2)

Country Link
EP (1) EP1754822B1 (fr)
DE (1) DE102005039300A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8496785B2 (en) 2009-08-04 2013-07-30 Voith Patent Gmbh Combination of a press felt with a pressure roll covering and/or suction roll covering for a paper machine
WO2020030509A1 (fr) * 2018-08-09 2020-02-13 Voith Patent Gmbh Système de presse

Citations (14)

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DE19708966A1 (de) * 1997-03-05 1998-09-10 Voith Sulzer Papiermasch Gmbh Pressenanordnung
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EP1103654A2 (fr) * 1999-10-19 2001-05-30 Voith Fabrics Blackburn Limited Ameliorations à des garnitures de rouleaux
EP1496152A1 (fr) * 2003-07-08 2005-01-12 Voith Paper Patent GmbH Rouleau de presse ou une enveloppe cylindrique
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US8496785B2 (en) 2009-08-04 2013-07-30 Voith Patent Gmbh Combination of a press felt with a pressure roll covering and/or suction roll covering for a paper machine
WO2020030509A1 (fr) * 2018-08-09 2020-02-13 Voith Patent Gmbh Système de presse
CN112424421A (zh) * 2018-08-09 2021-02-26 福伊特专利有限公司 压榨装置

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EP1754822B1 (fr) 2013-10-23
DE102005039300A1 (de) 2007-02-22

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