EP0078960A1 - Procédé d'encollage de fibres, en particulier des copeaux, et appareillage pour la mise en oeuvre de ce procédé - Google Patents

Procédé d'encollage de fibres, en particulier des copeaux, et appareillage pour la mise en oeuvre de ce procédé Download PDF

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Publication number
EP0078960A1
EP0078960A1 EP82109799A EP82109799A EP0078960A1 EP 0078960 A1 EP0078960 A1 EP 0078960A1 EP 82109799 A EP82109799 A EP 82109799A EP 82109799 A EP82109799 A EP 82109799A EP 0078960 A1 EP0078960 A1 EP 0078960A1
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EP
European Patent Office
Prior art keywords
glue
pneumatic
conveying
chips
gluing
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
EP82109799A
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German (de)
English (en)
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EP0078960B1 (fr
Inventor
Ag Bayer
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.)
Bayer AG
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Bayer AG
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Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to AT82109799T priority Critical patent/ATE19606T1/de
Publication of EP0078960A1 publication Critical patent/EP0078960A1/fr
Application granted granted Critical
Publication of EP0078960B1 publication Critical patent/EP0078960B1/fr
Expired legal-status Critical Current

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    • 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
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent

Definitions

  • the invention relates to a method for gluing particulate material, in particular chips, wafers, beaches, fibers, chips, dust from various, optionally predried raw materials, in particular substances containing lignocellulose, such as wood, annual plants; but also from shredded material waste, by spraying glue onto the material dissolved into a particle veil.
  • a device for carrying out the method is shown, which is based on a known pneumatic material transport device with a conveying fan, feed screw, piping, separator, compensating vessel and knife lock.
  • a method of the type mentioned at the outset is known from DE-OS 1 653 223, in which a fine distribution device is provided for producing a particle veil.
  • the system used is tailored to the processing of fiber material, such as wood fibers, short-fiber fine wood dust, i.e. short, fine and thin fibers.
  • the fine distribution device for the fiber material essentially consists of a stationary sieve cage or a perforated wall and an agitator arranged inside the cage. A metering device for the fiber material is connected upstream of this fine distribution device.
  • the agitator in the fine distribution device is driven ben and has stirring arms, which drive the fiber material through the openings of the cage in superimposed planes radially outwards, so that in this way and without touching the particles with a wall a particle curtain is formed, which slides down in free fall and is formed in the form of a cylindrical surface is.
  • This particle curtain is glued in two stages, one from the inside and one or more times from the outside, by successively spraying binder or glue onto the particles of the particle curtain.
  • the particle curtain itself has a considerable thickness, so that the glue jets, which are applied to the particle curtain from the inside out, wet the particle curtain differently and penetrate the particle curtain to different depths. Gluing from the inside takes place without pressure. Gluing from outside can be done under pressure.
  • agitators are connected downstream or two wetting systems are provided in series, through which the particles are passed one after the other. The mechanical effort for these special treatments is considerable.
  • DE-OS 2 913 081 shows a method with which even wood chips of a flat design, such as are indispensable proportionately in a particle board, can be properly glued by the particle curtain of the wood chips between two gluing stages and the glue is applied primarily on the front in the first stage and predominantly on the back of the flat wood chips in the second stage.
  • the particle veil is made very thin. Considerable mechanical effort is also required here.
  • DE-OS 2 653 683 a method and a device are known, wherein a spirally moving ring is formed from wood chips and the wood chips are provided with the binder.
  • a high-speed mixer shaft is used, which generates the spirally moving ring of chips along the inner wall of the mixing container.
  • Glue centrifugal tubes with their outlet openings for the binder are immersed in this ring of chips.
  • the mixer shaft is provided in the entire gluing and mixing zone with such centrifugal glue pipes over the circumference and axially distributed.
  • the glue centrifugal pipes not only have the function of releasing the binding agent to the chips, but they also exert a certain mixing effect on the wood chips of the ring of chips.
  • the binding agent emerges from chips in the form of drops and is carried away by the passing chips by blurring.
  • the binder is distributed evenly over all chips by rubbing the wood chips using constantly changing relative speeds. Despite the considerable length, a homogeneous distribution is not achieved because the binder in the form of drops is initially transferred to individual chips in a very concentrated manner.
  • DE-AS 2 304 262 shows a very similar device, but the binder is added through tubes in the wall of the mixing container with a pressure-free feed. The openings of the tubes are in the ring of chips. Here, too, the binder in droplet form is removed from the chips at the free end of each feed tube and, by blurring and coming into contact with other chips, reaches other wood chips.
  • pneumatic chip transport devices with a conveying fan, feed screw, piping, separator, compensating vessel and knife lock or the like are known, which serve to transport the chips, for example from their production point to a further processing point.
  • the known systems convey the chips in a loosened form through pipelines with a more or less high proportion of transport air. Long transport routes can also be bridged without significant wear on system parts or an additional shredding effect on the chips.
  • the invention has for its object to achieve an optimal gluing of the material high in the 'meaning a homogeneous distribution of the glue and the same time to keep the mechanical complexity relatively low.
  • this is achieved in that the glue is sprayed on during the pneumatic conveying of material.
  • the pneumatic conveying device which is present anyway and in which a particle curtain is formed, is used for a second function, namely for gluing.
  • This eliminates the use of an additional gluing system and its additional drive.
  • the use of the pneumatic material conveying for the gluing of the material particles has the further advantage that hardly any wear occurs.
  • the pneumatic conveying device requires very little maintenance in comparison to, for example, a turbo mixing system. There is also no change in the particle size of the material as a result of undesired secondary comminution, as occurs in the case of intensively working gluing systems which are equipped with a mixer.
  • the glue can be sprayed on in a tube for pneumatic material conveyance. So the pipe or pipeline already there is used. It is not even necessary to change the diameter of the pipe. Of course, the binder must be sprayed on there, but this means comparatively little effort.
  • a medium pressure system with an air pressure of approximately 0.2 to 0.8 bar is used for the pneumatic conveying of goods.
  • These medium pressure systems have the advantage of a relatively high consistency, ie the ratio of air volume to particle volume is favorable here.
  • the binder is not diluted too much.
  • the particle curtain absorbs the binder, which is sprayed or atomized without the risk that the inner wall of the pipe or the pipeline is unreasonably wetted by the binder, so that build-up phenomena could form there.
  • a material density is favorable in which about 150 liters of chips with a layer weight of 100 kg / m 3 are conveyed or moved in one cubic meter of air.
  • a liquid pressure of about 200 bar can be useful for spraying on the glue in the pneumatic material conveying pipe, but it is not limited to that.
  • Two-substance nozzles that can be pressurized with air can also be used.
  • the gluing is expediently carried out by a plurality of spatially staggered nozzles which are arranged one behind the other in the tube.
  • the particle curtain can be evenly distributed by air baffles in the tube of the pneumatic material conveying and thinned in front of the outlet openings of the nozzles. H. be kept away from these outlet openings so that the binder is first dissolved in air and sprayed on, only to then come into contact with the good particles in a finer distribution.
  • glue polyisocyanate mixture of the diphenylmethane series such as. B. described in DE-AS 2 711 958, used alone or in a mixture with water, there is a very low risk of contamination of the pipeline of the pneumatic conveying.
  • the device for carrying out the method consists first of all of a pneumatic material transport device with conveying fan, feed screw, pipes, separator, expansion tank and knife lock and is characterized in that one or more nozzles for spraying the glue are arranged in one or more sections of the pipes of the material transport device. These nozzles are located at the end of supply pipes for the glue, which penetrate the pipe from the outside in and end more or less centrally in the axis of the pipe.
  • a medium-pressure blower with an air pressure of approximately 0.2 to 0.8 bar is used as the conveying blower in order to achieve a high material density around the nozzles in the pipeline, which is just favorable for the application of the glue. It can also more than one nozzle for spraying the glue at a minimum distance of about one meter in a row in the pipe of the material transport device in order to apply the glue step by step. This results in a particularly homogeneous distribution.
  • FIG. 1 shows the essential parts of a pneumatic material transport device for wood chips.
  • Air is drawn in by a conveying fan 2 via a filter 1 and pressed into the pipeline 3.
  • the pipeline 3 can be designed very differently depending on the local needs and consist of individual pipes 5 connected to one another via flanges 4. Only the essential parts of the pneumatic material transport device are shown here.
  • Downstream of the conveyor blower 2 and in the vicinity thereof, a feed device 6 with a corresponding lock is provided in order to be able to introduce the wood chips into the pneumatic conveyor system.
  • One or more sight glasses 7 can be installed in the pipeline 3 so that the air flow with the chips carried by it can be observed from the outside as a particle curtain in the form of a particle curtain.
  • the glue supply is provided on a pipe 5 or else distributed one behind the other on several pipes.
  • a pump 8 is used to apply the liquid pressure to the liquid glue, which is approximately 200 bar.
  • a line 9 leads through the wall of the tube 5 and ends in a nozzle 10 through which the glue is sprayed.
  • the nozzle 10 is arranged approximately in the axis of the tube 5 and points in the direction of conveyance of the chip flow according to arrow 11 that cause the exit end of the nozzle 10 to be kept free of chips.
  • the dissolved particle veil of the wood chips is expanded outwards at this point, so that the flow lines 13 result. This creates a pressure cone 14 behind the nozzle 10, in which the glue has the opportunity to mix with the air and to distribute it finely over a larger volume of air before it comes into contact with the particle curtain.
  • a plurality of nozzles 10 are provided axially one behind the other in the pipe 5 or in the pipe 3, but a minimum distance of one meter is not exceeded. In this way it is possible to gradually increase the glue application and to achieve a particularly homogeneous distribution of the glue on the particle veil of the wood chips.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Road Signs Or Road Markings (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Hard Magnetic Materials (AREA)
  • Vending Machines For Individual Products (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Confectionery (AREA)
  • Adhesives Or Adhesive Processes (AREA)
EP82109799A 1981-11-05 1982-10-23 Procédé d'encollage de fibres, en particulier des copeaux, et appareillage pour la mise en oeuvre de ce procédé Expired EP0078960B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82109799T ATE19606T1 (de) 1981-11-05 1982-10-23 Verfahren und vorrichtung zum beleimen von teilchenfoermigem gut,. insbesondere von spaenen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3143895 1981-11-05
DE3143895A DE3143895C2 (de) 1981-11-05 1981-11-05 Verfahren und Vorrichtung zum Beleimen von teilchenförmigem Gut in Form von Spänen, Fasern o.dgl.

Publications (2)

Publication Number Publication Date
EP0078960A1 true EP0078960A1 (fr) 1983-05-18
EP0078960B1 EP0078960B1 (fr) 1986-05-07

Family

ID=6145658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109799A Expired EP0078960B1 (fr) 1981-11-05 1982-10-23 Procédé d'encollage de fibres, en particulier des copeaux, et appareillage pour la mise en oeuvre de ce procédé

Country Status (10)

Country Link
US (1) US4510184A (fr)
EP (1) EP0078960B1 (fr)
AT (1) ATE19606T1 (fr)
BE (1) BE894930A (fr)
CA (1) CA1192796A (fr)
DE (1) DE3143895C2 (fr)
DK (1) DK159482C (fr)
ES (1) ES517106A0 (fr)
FI (1) FI73166C (fr)
FR (1) FR2515535B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744259A3 (fr) * 1995-05-24 1996-12-11 C.M.P. Costruzioni Meccaniche Pomponesco S.p.A. Dispositif de collage pour installations de fabrication de plaques en fibre, et installation l'utilisant
DE10153593A1 (de) * 2001-11-02 2003-05-22 Fritz Egger Gmbh & Co Unterrad Verfahren und Vorrichtung zum Benetzen von Holzfasern mit einem Bindemittelfluid
EP1862214A2 (fr) 2006-06-03 2007-12-05 Glunz Ag Procédé et dispositif destinés à relier des fibres dans la zone d'un tube de soufflage

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336665A1 (de) * 1983-10-08 1985-04-25 Gebrüder Lödige, Maschinenbaugesellschaft mbH, 4790 Paderborn Verfahren zum befeuchten schuettfaehiger feststoffe und vorrichtung zum durchfuehren dieses verfahrens
US5057166A (en) * 1989-03-20 1991-10-15 Weyerhaeuser Corporation Method of treating discontinuous fibers
US5064689A (en) * 1989-03-20 1991-11-12 Weyerhaeuser Company Method of treating discontinuous fibers
US5432000A (en) * 1989-03-20 1995-07-11 Weyerhaeuser Company Binder coated discontinuous fibers with adhered particulate materials
US5498478A (en) * 1989-03-20 1996-03-12 Weyerhaeuser Company Polyethylene glycol as a binder material for fibers
US5230959A (en) 1989-03-20 1993-07-27 Weyerhaeuser Company Coated fiber product with adhered super absorbent particles
US5071675A (en) * 1989-03-20 1991-12-10 Weyerhaeuser Company Method of applying liquid sizing of alkyl ketene dimer in ethanol to cellulose fibers entrained in a gas stream
DE4122842C2 (de) * 1991-07-10 1993-11-18 Glunz Ag Verfahren zur Herstellung von Faserplatten aus stückigen Holzpartikeln und Isocyanat als Bindemittel
SE502518C2 (sv) * 1991-09-05 1995-11-06 Sunds Defibrator Ind Ab Sätt och anordning för belimning av partiklar
WO1993012282A1 (fr) 1991-12-17 1993-06-24 Weyerhaeuser Company Systeme a cuve/melangeuse et procede de revetement de fibres
DE19506353A1 (de) * 1995-02-23 1996-08-29 Schenck Ag Carl Verfahren und Vorrichtung zum Benetzen mit einem Fluid
IT1307924B1 (it) * 1999-01-25 2001-11-29 Cmp Spa Apparecchiatura incollatrice per impianti per produrre pannelli infibra di legno.
EP1663593B1 (fr) * 2003-09-12 2007-08-29 Kronospan Technical Company Ltd. Encollage haute pression dans un melangeur de fibres
DE102006013567B4 (de) * 2006-03-24 2013-09-26 Glunz Ag Verfahren und Vorrichtung zum Aufbringen von Bindemittel auf Partikel, insbesondere Fasern, die durch einen Blasgang gefördert werden

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD78881A (fr) *
DE1048013B (de) * 1957-07-26 1958-12-31 Draiswerke Ges Mit Beschraenkt Verfahren und Vorrichtung zur kontinuierlichen Beleimung bzw. Befeuchtung von span- und faserartigen Stoffen
AT256433B (de) * 1964-07-28 1967-08-25 Baehre Metallwerk K G Vorrichtung zum Beleimen von Spänen, Fasern u. ähnl. Gutteilen
AT271861B (de) * 1966-01-05 1969-06-25 Basf Ag Vorrichtung zum Klassieren von Zerkleinerungsprodukten pflanzlicher Rohstoffe
DE1632450A1 (de) * 1968-02-10 1970-12-10 Draiswerke Gmbh Vorrichtung zum kontinuierlichen Mischen relativ kleiner Mengen einer feinteiligen Komponente mit einem durch einen Luftstrom bewegten Traegerstoff
FR2228604A1 (en) * 1973-05-11 1974-12-06 Cifal Applying resin coating to fibres or particles - by turbulent impact with a high velocity spray
DE2438818A1 (de) * 1974-08-13 1976-02-26 Draiswerke Gmbh Vorrichtung zum kontinuierlichen beleimen von fasern
DE2711958A1 (de) * 1977-03-18 1978-09-21 Bayer Ag Verfahren zur bindung oder impraegnierung lignocellulosehaltiger rohstoffe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707690A (en) * 1951-04-10 1955-05-03 Owens Corning Fiberglass Corp Method and apparatus for applying liquid materials to fibers
DE1111822B (de) * 1959-03-19 1961-07-27 Paul Lechler Fa Verfahren und Vorrichtung zur Herstellung koerniger oder pulverfoermiger, mit einer das Zusammenkleben verhindernden Schicht bedeckter bituminoeser oder thermoplastischer Massen
US3481686A (en) * 1965-06-10 1969-12-02 Fiskeby Ab Method for the treating of wood chips
DE1507890A1 (de) * 1965-09-18 1969-04-03 Bayer Ag Verfahren und Vorrichtung zum pneumatischen Mischen,Trocknen oder Befeuchten von pulverfoermigem Gut
DE1653223A1 (de) * 1966-04-23 1970-09-17 Himmelheber Dipl Ing Max Verfahren und Anlage zur Durchfuehrung der Benetzungsstufe bei der Verarbeitung von Fasermaterial
US3548782A (en) * 1967-11-30 1970-12-22 Hanningsen Foods Inc Means for forming a continuous coating on particles
DE2304262B2 (de) * 1973-01-30 1978-05-03 Wilhelm Loedige Vorrichtung zum Beleimen von Spänen, Fasern oder ähnlichem Mischgut
DE2653683A1 (de) * 1976-11-26 1978-06-01 Draiswerke Gmbh Vorrichtung zum kontinuierlichen beleimen von holzspaenen
DE2913081A1 (de) * 1979-04-02 1980-11-20 Novopan Kg Verfahren und vorrichtung zum beleimen von holzspaenen und anderen lignozellulosehaltigen partikeln

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD78881A (fr) *
DE1048013B (de) * 1957-07-26 1958-12-31 Draiswerke Ges Mit Beschraenkt Verfahren und Vorrichtung zur kontinuierlichen Beleimung bzw. Befeuchtung von span- und faserartigen Stoffen
AT256433B (de) * 1964-07-28 1967-08-25 Baehre Metallwerk K G Vorrichtung zum Beleimen von Spänen, Fasern u. ähnl. Gutteilen
AT271861B (de) * 1966-01-05 1969-06-25 Basf Ag Vorrichtung zum Klassieren von Zerkleinerungsprodukten pflanzlicher Rohstoffe
DE1632450A1 (de) * 1968-02-10 1970-12-10 Draiswerke Gmbh Vorrichtung zum kontinuierlichen Mischen relativ kleiner Mengen einer feinteiligen Komponente mit einem durch einen Luftstrom bewegten Traegerstoff
FR2228604A1 (en) * 1973-05-11 1974-12-06 Cifal Applying resin coating to fibres or particles - by turbulent impact with a high velocity spray
DE2438818A1 (de) * 1974-08-13 1976-02-26 Draiswerke Gmbh Vorrichtung zum kontinuierlichen beleimen von fasern
DE2711958A1 (de) * 1977-03-18 1978-09-21 Bayer Ag Verfahren zur bindung oder impraegnierung lignocellulosehaltiger rohstoffe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744259A3 (fr) * 1995-05-24 1996-12-11 C.M.P. Costruzioni Meccaniche Pomponesco S.p.A. Dispositif de collage pour installations de fabrication de plaques en fibre, et installation l'utilisant
US5792264A (en) * 1995-05-24 1998-08-11 C.M.P. Costruzioni Meccaniche Pomponesco S.P.A. Gluing machine for wood fibreboard panel production plants, and a plant using the gluing machine
DE10153593A1 (de) * 2001-11-02 2003-05-22 Fritz Egger Gmbh & Co Unterrad Verfahren und Vorrichtung zum Benetzen von Holzfasern mit einem Bindemittelfluid
DE10153593B4 (de) * 2001-11-02 2005-11-17 Fritz Egger Gmbh & Co Vorrichtung und Verfahren zum Benetzen von Holzfasern mit einem Bindemittelfluid
CZ301590B6 (cs) * 2001-11-02 2010-04-28 Fritz Egger Gmbh & Co. Zarízení ke smácení drevených vláken tekutým pojivem, zpusob smácení drevených vláken tekutým pojivem a zpusob výroby drevovláknité desky
EP1862214A2 (fr) 2006-06-03 2007-12-05 Glunz Ag Procédé et dispositif destinés à relier des fibres dans la zone d'un tube de soufflage
EP1862214A3 (fr) * 2006-06-03 2008-07-02 Glunz Ag Procédé et dispositif destinés à relier des fibres dans la zone d'un tube de soufflage

Also Published As

Publication number Publication date
FR2515535B1 (fr) 1986-11-07
ES8401335A1 (es) 1983-12-16
DE3143895C2 (de) 1985-01-17
DE3143895A1 (de) 1983-05-11
FI823760L (fi) 1983-05-06
CA1192796A (fr) 1985-09-03
DK490382A (da) 1983-05-06
BE894930A (fr) 1983-03-01
DK159482C (da) 1991-04-08
US4510184A (en) 1985-04-09
FI73166C (fi) 1987-09-10
EP0078960B1 (fr) 1986-05-07
FI823760A0 (fi) 1982-11-03
DK159482B (da) 1990-10-22
FR2515535A1 (fr) 1983-05-06
FI73166B (fi) 1987-05-29
ATE19606T1 (de) 1986-05-15
ES517106A0 (es) 1983-12-16

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