EP2141283A2 - Bande de séchage pour un dispositif de séchage par condensation - Google Patents

Bande de séchage pour un dispositif de séchage par condensation Download PDF

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Publication number
EP2141283A2
EP2141283A2 EP09163604A EP09163604A EP2141283A2 EP 2141283 A2 EP2141283 A2 EP 2141283A2 EP 09163604 A EP09163604 A EP 09163604A EP 09163604 A EP09163604 A EP 09163604A EP 2141283 A2 EP2141283 A2 EP 2141283A2
Authority
EP
European Patent Office
Prior art keywords
drying
drying belt
web material
web
polymer material
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.)
Withdrawn
Application number
EP09163604A
Other languages
German (de)
English (en)
Other versions
EP2141283A3 (fr
Inventor
Uwe Köckritz
Martin Staiger
Matthias Schmitt
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
Priority claimed from DE200810040065 external-priority patent/DE102008040065A1/de
Priority claimed from DE200910001259 external-priority patent/DE102009001259A1/de
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2141283A2 publication Critical patent/EP2141283A2/fr
Publication of EP2141283A3 publication Critical patent/EP2141283A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/004—Drying webs by contact with heated surfaces or materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • 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 drying belt for a condensation drying device and a machine for producing and / or processing of web material, such as paper, cardboard or tissue, with a condensation drying device.
  • a condensation drying apparatus of a paper machine moisture is extracted from the sheet material to be produced by heating the sheet material from one side and cooling it from the other side.
  • the heating evaporates liquid contained in the web material.
  • the liquid vapor exits the web material and condenses outside the web material by cooling.
  • the web material on one side is in contact with a very finely structured dry band, which is permeable to the liquid emerging from the web material or to the liquid vapor.
  • a coarse textured drying belt is provided, whose function is primarily the absorption or storage of the liquid vapor or the condensed liquid.
  • a heat sink is provided, for example in the form of a locally cooled, non-liquid-impermeable sealing tape.
  • the other side of the web material is in contact with a heat source, for example a heated, non-liquid-permeable belt or a drying cylinder heated in the region of its jacket surface, over which the web material is guided.
  • a heat source for example a heated, non-liquid-permeable belt or a drying cylinder heated in the region of its jacket surface, over which the web material is guided.
  • Condensation drying equipment is often used directly after the press section or at the beginning of the dryer section. At this position, the paper or board web is still relatively wet and therefore easily malleable.
  • this has the advantage that the side of the paper web which is guided on the smooth jacket surface of the heated drying cylinder is smoothed very well and, on the other hand, has the disadvantage that in the other side of the paper web the structure of the drying belt in the form of, in particular, graphic papers very easily unwanted marks and impressions is impressed. This is especially true when additional pressure is exerted on the paper web by the cooling medium via the drying belt coming into contact with the paper web.
  • None of the known drying belts for condensation drying equipment connects a sufficiently smooth web material contact side with a sufficiently high water storage volume.
  • Especially for the production of fine graphic Papers are not known drying belts, with which graphic paper can be produced without markings.
  • Even those in the DE 10 2006 039 102 proposed drying belts with a web material contact side provided by a nonwoven fabric are not suitable for the production of sophisticated graphic papers such as copy paper.
  • the invention is achieved by a drying belt for a condensation drying device in a web material, such as paper, board or tissue, producing and / or processing machine.
  • the drying belt in this case has a basic structure providing the dimensional stability of the belt, which is formed from polyester and / or PCTA and / or PCT and / or PEEK and / or PPS and / or high-temperature-resistant PA-comprising yarn material.
  • the drying belt further comprises a nonwoven layer disposed on the base structure and substantially providing the water absorption capacity of the belt, which provides a web material contact side of the drying belt on its outer side facing away from the base structure.
  • the nonwoven fabric layer comprises a first polymer material arranged at least in the region of the outside. Furthermore, the nonwoven fabric layer is compacted and smoothed in the region of the outer side which provides the web material contact side by hot calendering above the melting temperature of the first polymer material.
  • the idea of the invention is to provide a drying belt with a porous nonwoven fabric layer which on the one hand has a smooth and therefore marking-free web material contact side and on the other hand a sufficiently high water absorption capacity and which furthermore suitable for use in a condensation drying device in terms of thermal resistance and dimensional stability is.
  • the nonwoven fabric layer has, at least in the region of its outer side, a first polymer material which is obtained by hot calendering, i. After exposure to temperature and pressure and subsequent cooling was first melted and then resolidified, a drying belt with a smooth and therefore mark-free web material contact side is provided.
  • drying belt further provided with a nonwoven fabric layer disposed between the base structure and the web material contact side, a drying belt having a sufficiently high water absorption capacity is provided.
  • a drying tape is provided, which is also at high temperature and high Ambient moisture, as encountered in a condensation dryer, has good dimensional stability in its machine direction and in its cross-machine direction.
  • high-temperature-resistant polyamides are, for example, PA46 or PA6 / 6T or PA MXD6 (para) or PA 6-T-6-I or PA 9-T.
  • polyester materials examples include PET, PBT or PTT.
  • the nonwoven fabric layer is completely formed by the first polymer material.
  • the nonwoven fabric layer having the smoothed and compacted outer side was formed by providing an untreated nonwoven fabric formed of fibers of the first polymeric material which is hot calendered in the region of an outer side at a temperature above the melting temperature of the first polymeric material was subsequently cooled to a temperature below the melting temperature of the first polymer material.
  • the fibers arranged in the region of the outer side were at least partially melted and partially reshaped and / or glued together under the action of pressure, whereby a compacted and smoothed outer side of the fiber-fleece layer was produced.
  • a further embodiment of the invention further provides that the nonwoven fabric layer is formed by the first polymer material and at least a second polymer material having a higher melting temperature than the first polymer material and that the nonwoven fabric layer in the region of the web material contact side providing outside by hot calendering above the melting temperature of the first polymer material and is compressed and smoothed below the melting temperature of the at least one second polymer material.
  • the at least one second polymer material is in the form of fibers.
  • the first polymer material and the second fibrous polymer material are mixed with each other during hot calendering, at least in the region of the outer side of the fibrous nonwoven layer, after re-solidification of the first polymer material, the fibers formed from the second polymer material at least in sections the first polymer material embedded and glued together by means of this at least in sections and / or connected.
  • the first polymer material and the second fibrous polymer material form a porous composite structure at least in the area of the outside which provides the web material contact side.
  • the drying tape preferably has a water absorption capacity of 100-150 kg per hour per m 2 in order to optimally work as a drying tape in a condensation drying apparatus
  • the drying belt is permeable to water and water vapor and preferably has a permeability of from 1 to 200 cfm, more preferably from 10 to 95 cfm.
  • the outer side providing the web material contact side of the drying belt has a roughness Rz of less than 2.4 ⁇ m.
  • roughnesses Rz are generally achieved, which are in the range of 0.1 .mu.m to 20 .mu.m, in particular 0.6 .mu.m to 6 .mu.m according to DIN EN ISO 4287, DIN EN ISO 4288.
  • the latter roughnesses can be easily achieved, in particular, when the outside of the nonwoven fabric layer is cooled below the melting temperature of the polymer of the filling material, while the outside is guided under pressure over a smooth surface.
  • the second polymer material is preferably present in the form of fibers in the nonwoven layer, wherein the first polymer material is particulate before its melting and in particular is arranged between the fiber material. It is conceivable here that particulate filler material is introduced into the nonwoven fabric in the region of the outside of the nonwoven fabric and subsequently melted during hot calendering, whereby the higher melting polymer fibers are embedded in the region of the outside of the nonwoven fabric layer in the first polymer material and adhesively bonded thereto.
  • the nonwoven fabric layer is formed by a fiber mixture, wherein a part of the fibers of the first polymer material and another part of the fibers of the second polymer material is formed.
  • Nonwoven fabric layer comprises or is formed by bi-component fibers, wherein prior to hot calendering, the first polymer material is present as a component and the second polymer material is present as a second component of the bi-component fibers.
  • the nonwoven fabric layer with the smoothed and compacted outer side was produced by providing an untreated nonwoven fabric comprising bi-component fibers at least in the region of its outer side providing the intended web material contact side or formed entirely from the bi-component fibers is.
  • a first component of the bi-component fibers is formed by the first polymer, as a second component of the bi-component fibers is formed by the second polymer.
  • the untreated fibrous web is hot calendered at a temperature above the melting temperature of the first polymeric material and below that of the second polymeric material and subsequently cooled to a temperature below the melting temperature of the first polymeric material 7.
  • a smooth and porous composite structure of the second fibrous polymer material and the first polymer material is produced in the region of the outside, in which the polymer fibers are embedded at least in sections in the first polymer material.
  • an area formed by the unfused bi-component fibers is formed between the outside and the base structure.
  • the bi-component fibers may, for example, be present here as core-sheath fibers or as side-side fibers.
  • the first polymeric material preferably forms the sheath and the second polymeric material preferably forms the core.
  • the first polymer may be a thermoplastic, in particular a co-polyamide.
  • the co-polyamide may consist of at least two different monomers from the group of caprolactam, laurolactam, dicarboxylic acids having 4-12 C atoms, Terephthalic acid, isophthalic acid, dimer acid with carbon atoms, linear alpha-omega-diamines having 2-12 C-atoms and 2-methylpentamethylenediamine.
  • the above-mentioned first polymers have, for example, a melting temperature of 110 ° C or more.
  • the first polymer may also be a duromeric melamine resin, which is present, for example, as a nonwoven structure or as part of such.
  • a very high decomposition temperature of about 400 ° C Due to its properties, such as a very high decomposition temperature of about 400 ° C, a very good dimensional stability under elevated temperature, a "non-combustibility", a very good chemical resistance melamine resin is very good for use in a drying belt for a Condensation drying device in a web material producing and / or processing machine suitable.
  • Such a nonwoven structure made of or with melamine resin can be produced, for example, by a melt spin method with subsequent cross-linking, wherein, for example, filament diameters in the range of 1-18 ⁇ m and surface masses of the nonwoven in the range of 35-250 g / m 2 can be produced without problems, why the formation of the nonwoven structure are virtually unlimited.
  • a nonwoven structure containing melamine resin can be bonded to other textile layers without problems by known textile bonding methods such as needling.
  • the second polymer material may be a thermoplastic, in particular a polyamide.
  • the polyamide may be from the group polyamide 6, polyamide 46, polyamide 66, polyamide 12, polyamide 11, polyamide 6T / 66, polyamide 6T / 6, polyamide 6T / 61 or polyamide 12T.
  • the first polymer material is more or less melted and reshaped, which in turn increases the densification and smoothness of the nonwoven fabric layer in the region of its Rail material contact side providing outside can set targeted.
  • a possible embodiment of the invention provides that the outside was performed during hot calendering over a heated smooth surface.
  • the outside was carried out during cooling from a temperature above the melting temperature to a temperature below the melting temperature of the first polymer material under pressure over a smooth surface.
  • the topography of the outside of the nonwoven fabric layer is frozen in the state that it has when passing over the cooling surface, wherein the smoothness of the outside of the material layer is determined or at least substantially influenced by the smoothness of the surface during cooling.
  • the basic structure may be formed by a woven fabric, a thread scrim, knitted or knitted fabric dryer fabric.
  • At least one nonwoven fabric layer is arranged between the nonwoven layer providing the web material contact side and the base structure, the polymer material forming the fibers having a higher melting temperature than the first polymer material.
  • At least one nonwoven layer is arranged on the side of the basic structure facing away from the web material contact side, the polymer material forming the fibers having a higher melting temperature than the first polymer material and its other outside facing away from the basic structure provides a machine contact side of the drying belt.
  • a machine for producing and / or processing web material such as paper, board or tissue
  • a condensation drying device having at least one heatable drying cylinder, the lateral surface thereof in a wrapping region of the web material, a drying belt after one of the preceding claims and a water and vapor impermeable sealing tape is wrapped, and with a cooling medium whose temperature is lower than the temperature of the lateral surface of the drying cylinder, wherein in the wrapping region one side of the web material in contact with the lateral surface of the drying cylinder and the other side of the Web material is in contact with the web material contact side of the drying belt, while the machine contact surface of the drying belt is in contact with one side of the sealing belt, the other side of which is acted upon by the cooling medium.
  • an overpressure hood which is open towards the sealing strip is arranged, which, in interplay with the sealing strip, provides a closed space in which the cooling medium, in particular under pressure, is guided.
  • the web material can be pressurized via the sealing strip, whereby the pressurized cooling medium exerts pressure on the web material.
  • the cooling medium may be a liquid or a gas. It is also a liquid-gas mixture conceivable as a cooling medium.
  • the drying tape according to the invention is particularly advantageously used in the condensation drying device when the web material is fed into the condensation drying device at a dry content in the range of 50-80%, since in this dry content range the paper is still easily moldable and therefore sensitive to marking by the clothing.
  • the web material guided in the condensation drying device in particular in the case of the abovementioned dry content, is not only dried in this but also smoothed.
  • the condensation drying device is arranged in the web running direction after the press section and before the first conventional drying group of the dryer section, wherein in particular the web material is fed with a dry content of about 50-60% in the condensation drying device. It is also conceivable that the condensation drying device is arranged in the web running direction after the first conventional drying group of the dryer section, wherein in particular the web material is fed with a dry content of about 70-80% in the condensation drying device.
  • a preferred embodiment of the invention provides that the condensation drying device in the web running direction after a heated drying cylinder has a second heatable drying cylinder, the lateral surface in a wrap of the web material, a second Drying belt, which is designed either according to one of claims 1-17 or as a felted dryer fabric and a second water and vapor impermeable sealing strip is wrapped, and with a cooling medium whose temperature is lower than the temperature of the lateral surface of the second drying cylinder, wherein in the wrap the other side of the web material is in contact with the shell surface of the second drying cylinder and the one side of the web material is in contact with the web material contact side of the second drying belt or with one side of the felted dryer fabric the machine contact surface of the second drying belt is in contact with a side of the second sealing band, the other side of which is acted upon by the cooling medium.
  • the web material is preferably a graphic paper, in particular copying paper or newsprint.
  • the FIG. 1 shows a drying tape 1 according to the invention in cross section.
  • the drying belt 1 has a woven basic structure 2 substantially providing the dimensional stability of the belt 1, which consists of polyester and / or PCTA and / or PCT and / or PEEK and / or PPS and / or high-temperature-resistant PA comprehensive thread material 3, 4 is formed.
  • the drying belt 1 further comprises a fiber fleece layer 5, which essentially arranges the water absorption capacity of the belt 1 and is provided on the basic structure 2, which provides a web material contact side of the drying belt 1 in the region of its outer side 6 facing away from the base structure 2.
  • the nonwoven fabric layer 5 is in the present case formed by a first polymer material 7 and by a second polymer material 8, wherein the first polymer material 7 has a lower melting temperature than the second polymer material 8.
  • the first polymer material 7 in the present case is a thermoplastic, such as, for example, a copolyamide.
  • the second polymer material 8 in the present case is a thermoplastic, in particular a polyamide.
  • the first and the second polymer material 7, 8 are arranged in the entire nonwoven fabric layer 5.
  • the nonwoven fabric layer 5 is compacted and smoothed by hot calendering at a temperature above the melting temperature of the first polymer material 7 and below the melting temperature of the second polymer material 8 at least in the region of the web material contact side.
  • the nonwoven fabric layer 5 with the smoothed and compacted outer side 6 was produced by providing an untreated nonwoven fabric formed by bi-component fibers 9 in which a first component -bspw. the jacket 10 through the first polymer and a second component -bspw. the core 11- of the bi-component fibers 9 is formed by the second polymer material 8.
  • This untreated fibrous web was hot calendered at a temperature above the melting temperature of the first and second polymer material - that is, the first polymer material was melted, and the second polymer material was not and subsequently cooled to a temperature below the melting temperature of the first polymeric material 7.
  • the first polymer material 7 forms a discontinuous polymer layer 13, at least in the region of the outside 6, in which the second polymer material 8 present as fibers 12 is embedded at least in sections. In a region in which the first polymer material 7 has not been melted, the first and the second polymer material 7, 8 are still present as bi-component fibers 9.
  • the second polymer material 8 to be present as a fiber material in the nonwoven fabric layer and for the first polymer material 7 to be arranged in particle form between the fiber material before it melts.
  • the porosity of the nonwoven fabric layer 5 increases from the outside 6 providing the web material contact side in the direction of the basic structure 2.
  • the FIG. 2 shows a further inventive drying belt 101 in cross section.
  • the drying belt 101 has a woven base structure 102 essentially providing the dimensional stability of the belt 101, which is formed from polyester material and / or PCTA and / or PCT and / or PEEK and / or PPS and / or high-temperature resistant PA yarn material 103, 104.
  • the drying belt 101 furthermore comprises a nonwoven layer 105, which essentially arranges the water absorption capacity of the belt 101 and is arranged on the base structure 102, which provides a web material contact side of the drying belt 101 in the region of its outer side 106 facing away from the base structure 102.
  • the nonwoven layer 105 is formed only by a first polymer material 107.
  • the first polymer material 107 in the present case is a thermoplastic, such as, for example, a copolyamide.
  • the nonwoven fabric layer 105 is compacted and smoothed by hot calendering at a temperature above the melting temperature of the first polymer material 107, at least in the area of the outer material side 106 providing the web material contact side.
  • the nonwoven fabric layer 105 having the smoothed and compacted outer side 6 was produced by providing an untreated nonwoven fabric formed of fibers 109 of the first polymer material 107.
  • This untreated fibrous web was hot calendered at a temperature above the melting temperature of the first polymeric material 107 - i. the first polymer material 107 has been melted at least in the region of the outside 106 and subsequently cooled to a temperature below the melting temperature of the first polymer material 7.
  • the first polymer material 107 is melted at least in the region of the outer side 106 and at least partially reshaped by a thread-like material 109 into a discontinuous polymer layer 113.
  • the first polymer material 107 forms a discontinuous polymer layer 113 at least in the region of the outside 106. In a region where the first polymer material 107 has not been melted, the first polymer material 107 still exists as fibers 109.
  • drying belts 1, 101 have a water absorption capacity of 100-150 kg per hour per m 2 . Furthermore, the drying belts 1, 101 are permeable to water and water vapor.
  • the roughness Rz of the web material contact sides 6, 106 of the in FIGS. 1 . 2 shown drying bands 1, 101 is preferably in the range of 0.6 to 6 microns according to DIN EN ISO 4287, 4288th
  • FIG. 3 shows a possible embodiment of a method for producing a drying belt according to the invention 1, 101.
  • the drying belt 1, 101 is guided over two spaced-apart rollers 20, 21, wherein the one roller 21 together with another roller 22 forms a hot calendering gap 24 through which the still untreated drying belt is passed.
  • the outer side 6, 106 of the drying belt 1, 101 is guided under pressure over a heated, smooth surface which is provided by the lateral surface of the roller 21.
  • the drying belt 1, 101 For subsequent cooling from a temperature above the melting temperature of the first polymer material 7, 107 to a temperature below the melting temperature of the first polymer material 7, 107, the drying belt 1, 101 is guided under pressure over a smooth and cooled surface (cooled means in this case that the cooled Surface must have a temperature which is below the melting temperature of the first polymer material), which is provided, for example.
  • cooled means in this case that the cooled Surface must have a temperature which is below the melting temperature of the first polymer material
  • FIG. 4 shows a part of a machine according to the invention for the production and / or processing of web material, such as, for example, paper, in particular graphic paper, such as copying paper, in the region of a condensation drying device 30.
  • web material such as, for example, paper, in particular graphic paper, such as copying paper
  • the condensation drying device 30 has at least one heatable drying cylinder 31, whose lateral surface 32 in a wrap region BC of a web material, such as. Paper 33, a as in Figures 1-3 described drying belt 1, 101 and a water and vapor impermeable sealing tape 34 is looped.
  • the sealing tape 34 is formed as a metal band.
  • the belts 1, 101, 34 are guided over a number of rollers and rollers 38, 39.
  • the condensation drying device 30 further comprises a cooling medium 35 whose temperature is lower than the temperature of the lateral surface 32 of the Drying cylinder 31.
  • one side of the web material 33 is in direct contact with the jacket surface 32 of the drying cylinder 31 and the other side of the web material 33 is in direct contact with the web material contact side 6, 106 of the drying belt 1, 101, while the machine contact side of the drying belt 1, 101 in FIG is in direct contact with one side of the sealing band 34, the other side is acted upon by the cooling medium 35.
  • the web material 33 is heated on the one hand, whereby liquid evaporates from the web material 33 and enters the drying belt 1, 101.
  • the sealing tape 34 is cooled by the cooling medium 35.
  • a sealing tape 34 open towards the overpressure hood 36 is arranged, which provides a closed space 37 in the interplay with the sealing strip 34, in which the particular pressurized gas and / or liquid-cooling medium 35 is guided, which exerts pressure on the web material 33.
  • the condensation drying device 30 is arranged at a location in the machine at which the web material 33 is fed into the condensation drying device 30 with a dry content in the range of 50-80%. By the pressurization and heat in the condensation drying device 30, the web material 33 in the condensation drying device 30 is dried and smoothed.
  • condensation drying device 30 is arranged in the web running direction L after the press section, wherein in particular the web material 33 is fed into the condensation drying device 30 with a dry content of about 50-60%.

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EP09163604A 2008-07-02 2009-06-24 Bande de séchage pour un dispositif de séchage par condensation Withdrawn EP2141283A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810040065 DE102008040065A1 (de) 2008-07-02 2008-07-02 Trocknungsband für eine Kondensationstrocknungseinrichtung
DE200910001259 DE102009001259A1 (de) 2009-03-02 2009-03-02 Trocknungsband für eine Kondensationstrocknungseinrichtung

Publications (2)

Publication Number Publication Date
EP2141283A2 true EP2141283A2 (fr) 2010-01-06
EP2141283A3 EP2141283A3 (fr) 2012-04-25

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EP09163604A Withdrawn EP2141283A3 (fr) 2008-07-02 2009-06-24 Bande de séchage pour un dispositif de séchage par condensation

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US (1) US20100000697A1 (fr)
EP (1) EP2141283A3 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006039102A1 (de) 2006-08-19 2008-02-21 Voith Patent Gmbh Trockenband für eine Trockensektion einer Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859583A1 (de) * 1998-12-22 2000-06-29 Voith Fabrics Heidenheim Gmbh Papiermaschinensieb für die Naßpartie einer Papiermaschine
WO2005098128A1 (fr) * 2004-04-08 2005-10-20 Ems Chemie Ag Feutre pour machines a papier et procede et dispositif permettant de le produire
DE102004017807A1 (de) * 2004-04-13 2005-10-27 Voith Paper Patent Gmbh Trockenanordnung
DE102004017808A1 (de) * 2004-04-13 2005-10-27 Voith Paper Patent Gmbh Maschine und Verfahren zur Herstellung einer Faserstoffbahn
DE102005000795A1 (de) * 2005-01-05 2006-07-13 Voith Paper Patent Gmbh Vorrichtung und Verfahren zur Herstellung und/oder Veredelung einer Faserstoffbahn
JP4157136B2 (ja) * 2006-02-14 2008-09-24 イチカワ株式会社 抄紙用プレスフェルト

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006039102A1 (de) 2006-08-19 2008-02-21 Voith Patent Gmbh Trockenband für eine Trockensektion einer Maschine zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton

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EP2141283A3 (fr) 2012-04-25
US20100000697A1 (en) 2010-01-07

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