EP1661677A1 - Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement - Google Patents

Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement Download PDF

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Publication number
EP1661677A1
EP1661677A1 EP05025693A EP05025693A EP1661677A1 EP 1661677 A1 EP1661677 A1 EP 1661677A1 EP 05025693 A EP05025693 A EP 05025693A EP 05025693 A EP05025693 A EP 05025693A EP 1661677 A1 EP1661677 A1 EP 1661677A1
Authority
EP
European Patent Office
Prior art keywords
mat
steaming
iii
vapor deposition
over
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
EP05025693A
Other languages
German (de)
English (en)
Other versions
EP1661677B1 (fr
Inventor
Gernot Dr. Von Haas
Detlef Kroll
Ekkehard Brommer
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.)
Dieffenbacher GmbH Maschinen und Anlagenbau
Original Assignee
Dieffenbacher GmbH and Co KG
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 DE102004057418.9A external-priority patent/DE102004057418B4/de
Application filed by Dieffenbacher GmbH and Co KG filed Critical Dieffenbacher GmbH and Co KG
Priority to PL05025693T priority Critical patent/PL1661677T3/pl
Priority to EP10012499.9A priority patent/EP2275239B1/fr
Priority to PL10012499T priority patent/PL2275239T3/pl
Priority to SI200531871T priority patent/SI1661677T1/sl
Publication of EP1661677A1 publication Critical patent/EP1661677A1/fr
Application granted granted Critical
Publication of EP1661677B1 publication Critical patent/EP1661677B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off

Definitions

  • the invention relates to a method for introducing steam into a mat or in the cover layers of a mat consisting of a mixture of lignocellulosic and / or cellulose-containing particles, such as chips, fibers, plastics or chips in the production of particle board and staggered with or without binder a device for carrying out the method.
  • the application means by a "mat” a mixture of lignocellulosic and / or cellulosic particles, such as shavings, fibers or chips, dispersed with or without binder, which can be scattered in several layers and with different orientations.
  • Such mats are usually used in continuous production processes for chipboard (MDF) or chipboard (OSB), but can also be used in discontinuous processes. These mats are usually pressed in continuous processes with a continuous double belt press and cured.
  • Subject of this application is the introduction of steam into the mat or due to the process only in the respective outer layers of a mat during precompression before a continuous main press or during the main pressing itself. In addition to the introduction of steam into the mat and the evaporation of different width mats is a problem solved shall be.
  • WO 1998 041 372 A1 and DE 101 61 341 A1 describe a process for covering layer coating in mats of different widths.
  • the area of the steam plate below which is not a mat is switched off.
  • a certain deactivation of the vapor deposition from the edge of the mat in the direction of the center of the mat is made in order to minimize vapor losses at the edge.
  • the device is constructed so that steam channels are arranged perpendicular to the feed direction from which steam flows out in the direction of the mat. The steam channels are closed at the edge of the mat by retracting cylinders in the edge area.
  • the steaming width within a duct is thus set according to the width of the mat and the steam losses at the edge, with basically virtually the entire width of the mat being steamed per duct. It is further described in WO 1998 041 372 A1 that the length of the vapor deposition zone (seen in the feed direction) is set according to the density profile. The length of the evaporation zone is controlled by switching on individual channels. In DE 101 61 341 A1 is describes a device that allows the method described above, a vapor deposition, but the width adjustment and the edge shutdown is achieved by turning correspondingly continuous cylinders.
  • the cause of the uneven vapor deposition across the full mat width and mat depth of the processes described above is that the air present in the mat, which is a flow resistance to the penetrating vapor, can not escape evenly during vapor deposition.
  • the incoming steam is thus counteracted by a high back pressure in the center of the mat, which is not so pronounced at the edge of the mat, since the open narrow side of the mat is open here and the air can escape. Therefore, at the same pressure, the steam penetrates deeper over the cross-section at the edge than in the center of the mat. As a result, so the process of vapor deposition or the Deck Anlagenmpfung with the described devices unsatisfactory possible.
  • the object and the object of the invention is to further develop the process for covering the surface so that a uniform density profile over the entire width of the plate can be increased and the process of simultaneously introducing steam from above and below to heat the full width of the mat so that a uniform heating of the entire mat or the cover layers over both the width and the thickness is possible.
  • This object of the invention is achieved according to claim 1, characterized in that the steaming of the mat starts over a length initially in the center of the mat and then widens wedge-shaped during the production progress to the longitudinal edges of the mat.
  • the advantage here is that the vapor deposition surface is divided into different Dampfungsfelder, wherein both in the transverse and in the longitudinal direction several fields "checkerboard" may be present. Due to the variable and controllable control of these fields individually or in groups, different evaporation modes for the entire mat depth or only the outer layers can be controlled. Particularly advantageous is the wedge-shaped vapor deposition or an alternating vapor deposition.
  • the vapor pressure in the individual chambers can be set differently (more vapor pressure in the center of the mat than in the marginal chambers). With these measures, a uniform heating of both the outer layers across the width as well as a complete heating is possible. As a further point, more steam (lower to the middle of the mat) can be targeted in the middle of the mat (seen across the width) present condensation front), which can solve the known problem of low transverse forces in the center of the plate here.
  • FIG. 1 shows the plan view of the pressure chamber fields arranged above a press material mat in the working direction (AR) of the press production plant without vapor deposition.
  • the arrow of the working direction points to the inlet side of the Bedampfungsumble G.
  • the Pressgutmatte can be compressed in addition, for example, when using the method in a pre-press or main press in the working direction.
  • a wedge-shaped Steaming switched in the direction of work, which causes the air is successively pushed from the middle of the mat II to the mat side II-II and III-III and replaced by steam.
  • a complete flow with displacement of the air can be carried out, or a pure cover layer vaporization with appropriate cover layer preheating.
  • the sheets produced which were preheated by this method, have uniform vertical density profiles both at the edge and in the center of the mat II.
  • the plate properties correlated with the density profile, such as the bending strength, are at the edges II-II and III-III are the same size as in Matt Center II.
  • the press speed can be significantly increased compared to the above-mentioned methods, since the heating of the middle layer to the curing temperature of the adhesive of about 100 ° C in the hot press in Mattenmitte II takes place at the same time as at the mat edge II-II and III-III.
  • the air displacement and thus the uniform vapor deposition can be further supported by the fact that in the center of the mat I-I a higher vapor pressure is set than at the mat edge II-II and III-III. Furthermore, it is still possible to set a different vapor pressure via the steaming section G of the steaming. For example, a lower vapor pressure in the center of the mat I-I is used for the topcoat vapor deposition in the rear area of the vaporization zone G (approximately from d or e) so that the vapor front does not penetrate deeper than at the mat edge II and III.
  • the vapor deposition is performed wedge-shaped so that 20% of the mat width g in mat center II not 20% on the Bedampfungsumble G but 40% on the Bedampfungsorder G of steaming are performed.
  • the classification can be used from the above example but using a higher vapor pressure at mid-mat II than at edges II-II and III-III.
  • the outer Bedampfungsfelder at the edges II-II and III-III under which there is no material in a narrow mat can be switched off to avoid unnecessary steam consumption.
  • the device is designed so that the vapor deposition surface is subdivided into different vapor deposition fields, wherein both transverse (v, w, x, y, z) and longitudinal (a, b, c, d, e, f) any number of fields for a checkerboard-like appearance can be distributed. Due to the variable shutdown and controllable control with regard to the vapor pressure or the steam quantity of these fields individually or in groups, different vaporization zones can be controlled with regard to the vapor deposition pressure or the amount of vapor deposition across the mat.
  • FIG. 4 shows a schematic side view in which, as already sufficiently stated, it can be seen that a mat 2 is mounted on a conveyor belt 1 is guided in the working direction by an array of pressure chambers 3 above and below.
  • the conveyor belt 1 is usually designed as a sieve belt and thus vapor-permeable.
  • Such a device is usually used in a pre-press for precompression and adjustment of various parameters in front of a continuously operating double belt press application.
  • a heater 4 is disposed above the mat 2. This is to prevent condensation from taking place in the pressure chambers 3 themselves, and thus drops of water from falling onto the mat 2.
EP05025693.2A 2004-11-27 2005-11-24 Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement Not-in-force EP1661677B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL05025693T PL1661677T3 (pl) 2004-11-27 2005-11-24 Sposób i urządzenie do wprowadzania pary w matę bądź w jej warstwy wierzchnie
EP10012499.9A EP2275239B1 (fr) 2004-11-27 2005-11-24 Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement
PL10012499T PL2275239T3 (pl) 2004-11-27 2005-11-24 Sposób i urządzenie do wprowadzania pary do maty lub jej warstw wierzchnich
SI200531871T SI1661677T1 (sl) 2004-11-27 2005-11-24 Postopek in naprava za uvajanje pare v podlogo, zlasti v pokrivne plasti

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004057418.9A DE102004057418B4 (de) 2004-11-27 2004-11-27 Verfahren und Vorrichtung zum Einleiten von Dampf in eine Matte bzw. in deren Deckschichten
DE102005053981.5A DE102005053981B4 (de) 2004-11-27 2005-11-13 Verfahren und Vorrichtung zum Einleiten von Dampf in eine Matte bzw. in deren Deckschichten

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP10012499.9A Division-Into EP2275239B1 (fr) 2004-11-27 2005-11-24 Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement
EP10012499.9A Division EP2275239B1 (fr) 2004-11-27 2005-11-24 Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement

Publications (2)

Publication Number Publication Date
EP1661677A1 true EP1661677A1 (fr) 2006-05-31
EP1661677B1 EP1661677B1 (fr) 2014-05-07

Family

ID=35594503

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10012499.9A Not-in-force EP2275239B1 (fr) 2004-11-27 2005-11-24 Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement
EP05025693.2A Not-in-force EP1661677B1 (fr) 2004-11-27 2005-11-24 Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10012499.9A Not-in-force EP2275239B1 (fr) 2004-11-27 2005-11-24 Procédé et dispositif pour l'introduction de vapeur dans un mat, particulièrement dans les couches de revêtement

Country Status (6)

Country Link
EP (2) EP2275239B1 (fr)
CN (1) CN101817197B (fr)
DE (1) DE102005053981B4 (fr)
ES (2) ES2489519T3 (fr)
PL (2) PL1661677T3 (fr)
SI (2) SI1661677T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2213432A1 (fr) * 2009-01-29 2010-08-04 Imal S.R.L. Appareil pour humidifier des tapis basé sur un matériau en bois en vrac

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUE057379T2 (hu) 2017-04-25 2022-05-28 SWISS KRONO Tec AG OSB faalapú lap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3914106A1 (de) 1989-04-28 1990-10-31 Siempelkamp Gmbh & Co Verfahren und anlage zur kontinuierlichen herstellung von spanplatten, faserplatten u. dgl.
DE4441017A1 (de) 1994-11-17 1996-05-23 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur kontinuierlichen Herstellung von Holzwerkstoffplatten
WO1998041372A1 (fr) 1997-03-18 1998-09-24 Wesser & Dueholm Procede de fabrication de panneaux de particules, de panneaux de fibres et de planches analogues
DE10161341A1 (de) 2001-12-13 2003-06-26 Dieffenbacher Gmbh Maschf Bedampfungsvorrichtung für Preßgutmatten

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6187234B1 (en) * 1998-06-23 2001-02-13 Masonite Corporation Method for steam pressing composite board having at least one finished surface
US6318989B1 (en) * 1998-06-23 2001-11-20 Masonite Corporation Steam injection press platen for pressing fibrous materials
DE10114381A1 (de) * 2001-03-23 2002-10-10 Metso Paper Inc Verfahren zur kontinuierlichen Herstellung von Holzspanplatten und ähnlichen bahnförmigen Plattenwerkstoffen und dafür geeignete Doppelbandpresse
DE102004057418B4 (de) * 2004-11-27 2017-08-31 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Vorrichtung zum Einleiten von Dampf in eine Matte bzw. in deren Deckschichten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3914106A1 (de) 1989-04-28 1990-10-31 Siempelkamp Gmbh & Co Verfahren und anlage zur kontinuierlichen herstellung von spanplatten, faserplatten u. dgl.
DE4441017A1 (de) 1994-11-17 1996-05-23 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur kontinuierlichen Herstellung von Holzwerkstoffplatten
US6054081A (en) * 1994-11-17 2000-04-25 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Process for the continuous production of boards of wood-based material
WO1998041372A1 (fr) 1997-03-18 1998-09-24 Wesser & Dueholm Procede de fabrication de panneaux de particules, de panneaux de fibres et de planches analogues
DE10161341A1 (de) 2001-12-13 2003-06-26 Dieffenbacher Gmbh Maschf Bedampfungsvorrichtung für Preßgutmatten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2213432A1 (fr) * 2009-01-29 2010-08-04 Imal S.R.L. Appareil pour humidifier des tapis basé sur un matériau en bois en vrac

Also Published As

Publication number Publication date
SI2275239T1 (sl) 2014-07-31
CN101817197A (zh) 2010-09-01
EP1661677B1 (fr) 2014-05-07
ES2471382T3 (es) 2014-06-26
PL2275239T3 (pl) 2014-08-29
CN101817197B (zh) 2014-07-02
DE102005053981B4 (de) 2018-01-11
EP2275239B1 (fr) 2014-03-12
PL1661677T3 (pl) 2014-09-30
ES2489519T3 (es) 2014-09-02
EP2275239A2 (fr) 2011-01-19
SI1661677T1 (sl) 2014-09-30
DE102005053981A1 (de) 2007-05-16
EP2275239A3 (fr) 2012-10-31

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