EP1389511A2 - Appareil pour fabriquer des bandes - Google Patents

Appareil pour fabriquer des bandes Download PDF

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Publication number
EP1389511A2
EP1389511A2 EP03014084A EP03014084A EP1389511A2 EP 1389511 A2 EP1389511 A2 EP 1389511A2 EP 03014084 A EP03014084 A EP 03014084A EP 03014084 A EP03014084 A EP 03014084A EP 1389511 A2 EP1389511 A2 EP 1389511A2
Authority
EP
European Patent Office
Prior art keywords
press
nip
roller
assigned
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
EP03014084A
Other languages
German (de)
English (en)
Other versions
EP1389511B1 (fr
EP1389511A3 (fr
Inventor
Eugen Schnyder
Günter Machguth
Hans-Peter Steininger
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 Paper 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1389511A2 publication Critical patent/EP1389511A2/fr
Publication of EP1389511A3 publication Critical patent/EP1389511A3/fr
Application granted granted Critical
Publication of EP1389511B1 publication Critical patent/EP1389511B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/26—Moulding or pressing characterised by using continuously acting presses having a heated press drum and an endless belt to compress the material between belt and drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
    • B30B3/005—Roll constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band

Definitions

  • the invention relates to a device for producing webs of material with a rotating, with a moving counter surface a press nip forming press belt and with several on top of each other in the direction of web travel following pressing units, through which the rotating press belt can be pressed against the moving counter surface in the press nip area.
  • a quantity of chip or fiber provided with 10 to 22% glue is usually compressed into plates between a heated drum and a rotating steel belt.
  • the diameter of the drum is usually in a range from 2 to 5 m.
  • the plates obtained usually have a thickness in a range from 1.5 to 12 mm.
  • the steel strip, which is also hot, is pressed against the drum by at least one roller (cf., for example, DE 42 43 917 C).
  • the rollers are at a relatively large mutual distance. In the area between the rollers, which are relatively far apart from one another, the tape tension now only results in a relatively low contact pressure on the fiber cake, which can be, for example, in a range of 20 bits 25 N / cm 2 .
  • the line load between a relatively hard roller and the drum can be, for example, 10,000 N / cm.
  • the deflection adjustment rollers are now closer behind one another in the web running direction, which on the one hand reduces the time interval between the force peaks on the fiber cake and on the other hand keeps the contact pressure on the fiber cake between the force peaks at a higher level .
  • the path has been taken so far to replace relatively few larger rolls with a diameter of, for example, approximately 1.5 m by a plurality of smaller deflection adjusting rolls with a diameter of, for example, approximately 0.32 m lying directly behind one another.
  • the invention has for its object the device of the beginning to further optimize the type mentioned.
  • the device is intended in particular Way especially for use in the manufacture of Fibreboard or chipboard may be suitable.
  • At least one of the pressing units which follow one another in the web running direction a wide nip unit with at least one extended in the web running direction Breitnipschuh and a rotating over the Breitnipschuh flexible band is formed.
  • Device particularly usable for the production of individual panels of separable fiberboard sheets, chipboard sheets and / or the like from a lignocellulosic and / or cellulosic Particles and fleece containing at least one binder.
  • it is particularly useful for the production of fiber, Chipboard, HDF, MDF, LDF and / or OSB board.
  • the pressure is longer Stretched evenly, reducing the quality of the fiber obtained Chipboard is increased accordingly.
  • the wide nip unit can in particular by a wide nip roller with a Be formed over the Breitnipschuh flexible roller jacket.
  • At least one of the pressure units following one another in the web running direction can also be formed by a deflection adjustment roller.
  • a deflection adjustment roller In addition to the wide nip unit (s), one or more deflection adjustment rollers can also be provided, which normally lead to higher surface pressures (N / mm 2 ) than wide nip units.
  • the front Press nip area at least one deflection adjustment roller and one subsequent further press nip area at least one wide nip unit be assigned. Only the front press nip area is preferred one or more deflection adjustment rollers and exclusively the further press nip area one or more wide nip units assigned.
  • At least a front area of the press nip viewed in the direction of web travel at least one wide nip unit is assigned. So it can, for example the front press nip area at least one wide nip unit and a subsequent further press nip area at least one Deflection adjustment roller can be assigned.
  • the front press nip area at least one wide nip unit and a subsequent further press nip area at least one Deflection adjustment roller can be assigned.
  • the entire press nip area can also be in any sequence, both wide nip units and deflection adjustment rollers be assigned. So it is also an arbitrarily mixed one Arrangement of wide nip units and deflection adjustment rollers possible.
  • a respective deflection adjustment roller preferably comprises one revolving roller shell, a non-rotatable penetrating the roller shell Yoke and arranged between the roll shell and the yoke Pressers.
  • the device is therefore in the direction of web travel successive pressing units, here for example wide nip units and / or deflection adjustment rollers, formed by pressure rollers, which at least partially have roller coverings of different hardness.
  • the hardness of a respective roller covering is preferably in Depends on the location of the pressure roller concerned.
  • a front viewed in the web running direction At least one pressure roller can be assigned to the area of the press nip, whose roller covering has a modulus of elasticity that is higher or lower than the modulus of elasticity of the roller covering at least one subsequent to it additional press nip area associated pressure roller.
  • the one between the rotating press belt and the moving counter surface Press nip formed can be heated on one or both sides.
  • the press nip preferably has a curved course.
  • the moving Counter surface can in particular by a rotating press drum be educated.
  • the press belt is both over a partial area of a device the counter surface forming press drum as well as tensioning and / or Deflection rollers guided.
  • the moving counter surface or the rotating press drum is preferred heated.
  • the rotating press belt can advantageously by a steel band may be formed.
  • the rotating press belt or steel belt is also preferably again heated.
  • Induction heating can be used, for example, to heat the steel strip be provided.
  • Device are the successive in the web running direction Wide nip units and / or deflection adjustment rollers at least partially arranged closely one behind the other.
  • These pressure units for example, be grouped together. Within of the respective groups, the contact pressure units are then as possible arranged in close succession while between two respective groups may also have a relatively larger distance can be provided.
  • the device according to the invention is advantageously especially applicable for the production of individual plates divisible fiberboard webs, chipboard webs and / or the like from a lignocellulosic and / or cellulosic particle and fleece containing at least one binder.
  • the device according to the invention is advantageously particularly for Manufacture of fiber, chipboard, HDF, MDF, LDF and / or OSB boards usable.
  • the device according to the invention is, for example, also in a paper machine, a calender or a printing machine.
  • FIG. 10 The only figure in the drawing shows a schematic representation of a Device 10 for the production of material webs 12, which are especially around fiberboard webs that can be divided into individual panels, Chipboard sheets and / or the like made of a lignocellulose and / or cellulose-containing particles and at least one binder Nonwoven can act.
  • the device 10 is also for example Production of HDF, MDF, LDF and / or OSB boards can be used.
  • the device 10 comprises, for example, a steel band revolving press belt 14, which with a moving surface 16, the here, for example, formed by the surface of a press drum 18 is defined, a press nip 20 in which the for the production of the material web 12 serving starting material is compressed.
  • the device 10 also includes a plurality of in the web running direction L successive pressing units 22, the present Case are at least partially formed by a respective wide nip unit and through which the rotating press belt 14 in the area of the press nip 20 against the moving counter surface 16, here against the pressing drum 18 can be pressed.
  • all pressing units 22 are each formed by a wide nip unit.
  • a wide nip unit each comprises at least one in the web running direction L extended wide nip shoe 24 and one over this wide nip shoe 24 guided all-round flexible belt 26.
  • the Wide nip units each in particular by a wide nip roller with a formed over the Breitnipschuh 24 guided flexible roller jacket 26 his.
  • one or more of the pressing units can also be used each be formed by a deflection adjustment roller. So it is basically also a combined arrangement of wide nip units and deflection adjustment rollers conceivable. For example, in one or more deflection adjustment rollers in a front press nip area and in a subsequent further press nip area or several wide nip units can be provided, or vice versa.
  • the successive in the web running direction L can Pressure units 22, for example, also by pressure rollers, here for example wide nip rolls and / or deflection setting rolls, be formed, the at least partially different roller coverings Possess hardness.
  • the hardness of a respective roller covering can be used especially depending on the location of the pressure roller in question to get voted.
  • the roller covering of which has a modulus of elasticity which is at least higher or lower than the modulus of elasticity of the roller covering one associated with a subsequent further press nip area Pressure roller.
  • this is for example Press band 14 formed by a steel band both over a partial area of the pressing surface 18 forming the counter surface 16 as well Tensioning and / or deflecting rollers 28 out.
  • the between the rotating press belt 14 and the moving counter surface 16 or the press drum 18 formed press nip 20 is at least heatable on one side and preferably on both sides. So it can, for example both the press drum 18 and this here by a steel belt formed press belt 14 can be heated.
  • a steel belt formed press belt 14 can be heated.
  • in particular inductive heating can be provided.
  • the pressing units 22 are divided into two groups, within which they are arranged in close succession are. In contrast is between the two successive groups a greater distance is provided from pressing units 22.
  • the device 10 just described can be used with particular advantage for the production of fiberboard webs that can be divided into individual panels, Chipboard sheets and / or the like, made of a lignocellulosic and / or cellulose-containing particles and at least one binder containing fleece. It is particularly useful for the production of Fiberboard, chipboard, HDF, MDF, LDF and / or OSB boards. Moreover, is for example also a use in a paper machine, a Calender, a printing press and / or the like conceivable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP03014084A 2002-08-16 2003-06-23 Appareil pour fabriquer des bandes Expired - Lifetime EP1389511B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10237534A DE10237534A1 (de) 2002-08-16 2002-08-16 Vorrichtung zur Herstellung einer Materialbahn
DE10237534 2002-08-16

Publications (3)

Publication Number Publication Date
EP1389511A2 true EP1389511A2 (fr) 2004-02-18
EP1389511A3 EP1389511A3 (fr) 2005-12-07
EP1389511B1 EP1389511B1 (fr) 2008-10-01

Family

ID=30469766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014084A Expired - Lifetime EP1389511B1 (fr) 2002-08-16 2003-06-23 Appareil pour fabriquer des bandes

Country Status (3)

Country Link
EP (1) EP1389511B1 (fr)
AT (1) ATE409560T1 (fr)
DE (2) DE10237534A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243917C1 (de) * 1992-12-23 1994-01-13 Baehre & Greten Anlage zur kontinuierlichen Herstellung von Span-, Faser- und dergleichen Plattenbahnen
EP0776742A1 (fr) * 1995-11-29 1997-06-04 De Pretto-Escher Wyss s.r.l. Dispositif pour la fabrication de panneaux de particles, panneaux de fibres ou autre
US6136154A (en) * 1996-10-11 2000-10-24 Voith Sulzer Papiermaschinen Gmbh Press section
US6158335A (en) * 1998-12-16 2000-12-12 Valmet Corporation Calender apparatus with a separating mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI82092C (fi) * 1989-03-22 1991-01-10 Valmet Paper Machinery Inc Laongnyppress.
SE468483B (sv) * 1991-05-24 1993-01-25 Nordiskafilt Ab Press samt saett att modifiera en press foer pressektionen i en pappersmaskin eller liknande
DE10157688C1 (de) * 2001-11-24 2003-02-13 Voith Paper Patent Gmbh Kalander zum Glätten einer Bahn aus Faserstoff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243917C1 (de) * 1992-12-23 1994-01-13 Baehre & Greten Anlage zur kontinuierlichen Herstellung von Span-, Faser- und dergleichen Plattenbahnen
EP0776742A1 (fr) * 1995-11-29 1997-06-04 De Pretto-Escher Wyss s.r.l. Dispositif pour la fabrication de panneaux de particles, panneaux de fibres ou autre
US6136154A (en) * 1996-10-11 2000-10-24 Voith Sulzer Papiermaschinen Gmbh Press section
US6158335A (en) * 1998-12-16 2000-12-12 Valmet Corporation Calender apparatus with a separating mechanism

Also Published As

Publication number Publication date
DE50310565D1 (de) 2008-11-13
ATE409560T1 (de) 2008-10-15
DE10237534A1 (de) 2004-02-26
EP1389511B1 (fr) 2008-10-01
EP1389511A3 (fr) 2005-12-07

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