EP1307325B1 - Method and device for gluing dried fibres used for producing fibre plates - Google Patents

Method and device for gluing dried fibres used for producing fibre plates Download PDF

Info

Publication number
EP1307325B1
EP1307325B1 EP01962928A EP01962928A EP1307325B1 EP 1307325 B1 EP1307325 B1 EP 1307325B1 EP 01962928 A EP01962928 A EP 01962928A EP 01962928 A EP01962928 A EP 01962928A EP 1307325 B1 EP1307325 B1 EP 1307325B1
Authority
EP
European Patent Office
Prior art keywords
fibres
pins
fibers
gluing
fiber
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.)
Expired - Lifetime
Application number
EP01962928A
Other languages
German (de)
French (fr)
Other versions
EP1307325A1 (en
Inventor
Fritz Schneider
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.)
Flakeboard Co Ltd
Original Assignee
Flakeboard Co Ltd
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 DE2000139226 external-priority patent/DE10039226C1/en
Priority claimed from DE2000161072 external-priority patent/DE10061072A1/en
Application filed by Flakeboard Co Ltd filed Critical Flakeboard Co Ltd
Publication of EP1307325A1 publication Critical patent/EP1307325A1/en
Application granted granted Critical
Publication of EP1307325B1 publication Critical patent/EP1307325B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0272—Mixing the material with binding agent by bringing the material into contact with a rotating roll provided with a layer of binding agent
    • 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
    • B27N1/0263—Mixing the material with binding agent by spraying the agent on the falling material, e.g. with the material sliding along an inclined surface, using rotating elements or nozzles

Definitions

  • the invention relates to a method and a device for gluing provided for the production of fiberboard, dried fibers.
  • the fibers are preferably of lignocellulosic and / or cellulase-based materials.
  • the fiberboards are lightweight, medium density or high density fiberboard. Such a method is known from DE-A-1 078 759.
  • blow-line gluing it is customary to glue fibers, which are intended for the production of MDF or HDF boards, in the wet state.
  • the binder is sprayed into a blowing tube ending in the entrance area of the tube dryer behind a refiner onto the wet, still hot fibers. Subsequently, the fibers are dried.
  • the blow-line gluing allows a uniform fiber gluing and thus avoiding lump formation through fibers and glue.
  • a major disadvantage of the blow-line gluing lies in a relatively high glue consumption (see, for example: Buchhoizer, P., Leimveriusten on the track, p. 22 - 24, MDF magazine 1999).
  • the increased consumption of glue is caused by some of the reactivity of the glue being lost during the drying process of the fibers due to the high temperatures.
  • the emission of formaldehyde, which originates from the glue considerably, whereby a complex pollution minimization is required.
  • a further disadvantage of the blow-line gluing is that the fibers glued in this way have a low cold stickiness due to a pre-curing in the dryer, so that a fiber web formed from the fibers has a great tendency to spring back after the pre-pressing. This can be done while pressing of the nonwoven fabric due to a high air displacement from the nonwoven fabric lead to the destruction of the nonwoven fabric structure.
  • blow-line gluing can be avoided by gluing the fibers in the dry state. It is known to glue dried fibers in a mixer. However, the dry sizing of fibers in mixers has the disadvantage of producing fiber agglomerates and mats which result in uneven fiber sizing and undesirable formation of sizing stains in the sheet surfaces (see, supra).
  • a dry gluing machine in which mixing tools can be provided is known e.g. in EP 0 744 259 B1.
  • EP 0 728 562 A2 discloses a process for the dry gluing of fibers in which a loosening of the fiber stream takes place in a pneumatic conveying line by generating a high turbulence due to a reduced flow velocity and the fibers are wetted by spraying in this loosening zone.
  • gluing devices of the type known as "roller blenders” are known in which glue is applied to wood particles by means of rolling (Maloney, Thomas M., “Modem Particleboard & Dry-Process Fiberboard Manufacturing” 439f, Miller Freeman Publ. 1977, San Francisco, Ca., USA).
  • the invention has for its object to wet with high uniformity as much surface of the fibers with binder.
  • the fibers are supplied by a metering device through a feed chute of a fiber roll, which is provided on its surface with a plurality of preferably conical pins.
  • the fibers are deflected into a chute section and accelerated by the pins and a stream of air generated by the pins to approximately the peripheral speed of the fiber roll.
  • the manhole section is bounded by a section of the circumference of the fiber roll and an opposite wall.
  • the fibers emerge essentially in the horizontal direction of movement and are then sucked downwards or upwards and thereby deflected.
  • the fibers are glued by means of at least one spray nozzle which emits glue and air under pressure.
  • the fibers compose the feed chute in a stream of fibers and strike the fiber wad.
  • the fibers are not only deflected, but also strongly accelerated, whereby irregularities such as fiber agglomerates are eliminated.
  • the fiber flow by the acceleration of the fibers in the flow direction many times compared to the fibers in stretched the feed slot. In this way it is ensured that the fibers are very finely distributed in the deflection and thus provide a very large contact surface for the emerging from the spray nozzles glue.
  • the fibers are brought into contact with the pins of the fiber roll at least once in the course of the chute section by a guide plate.
  • the baffle is ramped inclined towards the pins. The deflected by the baffle and thus greatly braked fiber flow is detected by the pins of the rotating fiber roll and accelerated back to the original speed. Due to the renewed acceleration by the pins, the fibers return to their original speed and undergo another process of resolution of unevenness. Due to the centrifugal force, the fibers are thrown against another wall section and guided by this again. It may be followed by another baffle, which causes a further return of the fibers in the sphere of action of the fiber roll.
  • the baffles are adjustable at an angle to the flow direction of the fibers. Thereby, the degree of deceleration of the fibers can be varied.
  • the baffles are also preferably arranged integrally over the entire working width of the shaft section.
  • baffles can be arranged one after another in the course of the shaft section, as permitted by the length of the shaft section and the rotational speed of the fiber roller. In this way, taking full advantage of the length of the duct section, the fibers are repeatedly subjected to a dissolution process by the action of the pins of the fiber roller.
  • the fibers can be deflected into a channel of a pneumatic transport device, wherein the glue is sprayed onto the fibers in the deflection by oppositely arranged spray nozzles.
  • the speed with which the fibers strike the fiber roll can be determined by adjusting the negative pressure prevailing in the feed chute.
  • the method can be used in such a way that symmetrically arranged opposite fiber streams are provided, in which the fibers are glued by the same method, wherein the fiber streams after exiting from the outlet opening of the manhole section collide.
  • Such a double gluing process is particularly suitable for high fiber throughput rates of up to 30 t atro / h. Due to the fact that the fiber streams collide head-on after the glue application, which preferably takes place when entering an air transport shaft, the fibers are mixed thoroughly.
  • the sizing method described may also be followed immediately by a sifting of the fibers.
  • the different throw of particles of different mass at the exit from the shaft section is used to an air-fiber direction.
  • Such an airfoil sealing process may, for example, be the fiber-coating process described in German patent application 100 25 177.3, which is preceded by a process for dissolving irregularities in a fiber stream. But it may also be followed by the formation of a nonwoven fabric, for example by the method described in said German patent application.
  • a desired solid resin content of 10% based on atro fibers 5% of solid resin of the first gluing stage without fiber direction and 5% of solid resin can be assigned to the second gluing stage with fiber direction.
  • the advantages of this in-step fiber sizing are that less glue throughput is required per gluing step and thus per individual sizing device, resulting in a reduction in fiber and glue lumping, and in that there is better glue distribution to the fibers through multiple sizing and blending and a reduction in the internal contamination of the individual gluing device due to a reduced glue fiber ratio per gluing step.
  • a gluing can be carried out in two gluing stages, in which no screening is immediately followed.
  • the device according to claim 13 serves the above-described stepwise gluing of the fibers. This is followed by a gluing device with fiber direction to a gluing device without fiber direction. This results in the advantages mentioned above in connection with claim 7.
  • the device according to the invention can also be designed in an analogous manner so that the supply of the fibers takes place at the lower end of the shaft section and the exit at the upper end.
  • the metering device is arranged below the fiber roll, and the fibers are pulled by the suction effect of the fiber roll to the shaft section.
  • the gluing device according to FIG. 1 a has a fiber transverse distribution device 2 joined to a discharge 1 of a fiber dryer, not shown.
  • the transverse distribution device 2 is adjoined by a metering bunker 3, which is filled uniformly with dried wood fibers 4 by the transverse distribution device 2.
  • a bottom belt 5 By means of a bottom belt 5, the wood fibers 4 are fed to a Dosierbunkeraustrag with discharge rollers 6.
  • By the discharge rollers 6 larger clumps of the fibers 4 are dissolved.
  • the Bottom band 5 passes over a weighing device 7, which continuously detects the current fiber throughput weight (weight per unit of time).
  • a fan 12 of a pneumatic transport device 13 which is shown in Fig. 1a only partially with a belonging to the gluing device TeiL section, a mixture of fibers and air is sucked in the feed chute 10, wherein the fibers in a fiber stream 14 increases along the Mold wall 9 and the air increasingly move in an air flow along the mold wall 8.
  • an electromagnet 15 for the separation of metal parts from the fiber stream 14 is attached.
  • the fiber stream 14 impinges on a fiber roll 17 which serves to dissolve irregularities in the fiber stream 14 and to accelerate the fibers in the fiber stream 14.
  • a plurality of pins 18 are arranged on the surface of the fiber roll 17. which taper conically with increasing distance to the axis of rotation of the fiber roller 17 to a tip.
  • the fiber roller 17 rotates at high speed in the direction indicated by the arrow 19 direction of rotation.
  • the peripheral speed of the fiber roller 17 is variable and may be 20 to 100 m / sec.
  • the diameter of the fiber roll 17 may be, for example, 1000 mm and the length of the fiber roll 17, for example 1800 mm. In this case, the conical pins 18 are about 10,000 pieces.
  • the course of Wall 21 is designed so that the distance between the tip of the pins 18 and the wall 21 of one of the outlet opening 16 of the feed chute 10 adjacent inlet opening 24 of the shaft portion 22 to the outlet opening 23 is progressively increased.
  • the wall 21 is provided on an outer side substantially over its entire length with a water-cooled cooling jacket 25.
  • a row of glue slot nozzles 26 is arranged over the entire width of the shaft section 22.
  • the outlet openings of the glue slot nozzles 26 are located in a gap 27 formed by a lower end of the wall 21 and a gluing board 28.
  • Each glue slot nozzle 26 is supplied by a separate positive displacement pump 29 via a connection hose 30 with glue from a glue removal container 31, which has a glue removal balance 32.
  • a glue removal container 31 which has a glue removal balance 32.
  • 25 glue slot nozzles 26 are provided with a slot length of 72 mm and a slot width of 2 mm.
  • the number of Schtitzdüsen 26 can be changed arbitrarily.
  • the glue pumps 29 are preferably driven via a common drive shaft 33 and a common drive 34.
  • Seleimungsbrett 28 which connects directly to the Leimschlitzdüsen 26 is disposed over the entire width of the shaft portion 21 It is at its angle to the shaft portion 22 adjustable.
  • the shaft section 22 opens into the pneumatic transport device 13.
  • the speed at which the fiber flow 14 moves in the feed chute 10 to the Austnttsö réelle 16 is adjustable via an air throttle 35 in an upper channel section 40 of the pneumatic transport device 13 by a through the fan 12 generated negative pressure in the fiber roller 17 is changed.
  • the fibers are deflected by the fiber roller 17 in the shaft section 22.
  • the fibers accelerate to approximately the circumferential speed of the fiber roll 17. In the case of this glueing device, this fiber speed is reached approximately one quarter of the circumference of the fiber roll 17.
  • the fibers are stretched in a fiber stream 36 to a multiple of the fiber flow 14 in the feed chute 10. Due to the large number of conical pins 18, an air flow which corresponds approximately to the peripheral speed of the fiber roller 17 is generated in the shaft section 22.
  • the fibers in the chute section 22 centrifugally outwardly and lie against an inner side of the wall 21 of the chute section 22, so that the conical pins 18 of the fiber roll 17 after about a quarter of the circumference of the fiber roll 17 in Chute section 22 are no longer in contact with the fibers.
  • the dissolution of the fiber stream 36 caused by the stretching of the fibers and the glue transfer provided over the entire width of the fiber stream 36 result in a large contact surface for the glue receptacle.
  • the gluing board 28 serves to deflect the fiber stream 36 in the plane of the drawing.
  • the fibers exert on the gluing board 28 a pressure which can be adjusted by adjusting the angle of the gluing board 28 to the chute section 22.
  • the absorption of glue 37 by the fibers is effected by mechanical abrasion of the glue 37 on the gluing board 28.
  • the glue metering is carried out according to a predetermined percentage glue content based on atro fibers in relation to the fiber throughput which is detected by the weighing device 7 of the metering hopper 3.
  • the fibers emerge from the shaft section 22 after gluing and are deflected by gravity and by transport air flowing in the direction of the arrow 38 into a suction hood 39 of the pneumatic transport device 13 below the fiber roller 17.
  • the transport air is preferably return air guided in a closed circuit or fresh air.
  • the embodiment according to FIG. 1 b is formed, except for baffles 42 in the shaft section 22, like the gluing device according to FIG. 1 a.
  • the baffles 42 are arranged integrally over the entire working width of the shaft portion 22. They are ramped in the flow direction of the fibers to deflect the fibers to the pins 18 of the fiber roll 17 out. At this time, the fibers are decelerated and caught by the faster moving pins 18, whereby again unevenness in the fiber stream 36 can be resolved. After the fibers have been accelerated again by the pins 18 and brought to the rotational speed of the pins 18, the fibers again attach themselves to the wall 21 due to the centrifugal force.
  • the baffles 42 can be adjusted in their angle to the flow direction of the fiber stream 36, whereby in particular the degree of deceleration of the fibers can be influenced.
  • a plurality of baffles 42 may be arranged over the course of the shaft section 22, so that there are a plurality of wall sections to which the fibers rest. Two of these wall sections are shown in Fig. 1 b and designated by the reference numerals 21 a and 21 b. Between the wall sections 21a and 21b is an area in which the fiber stream 36 is combed by the pins 18.
  • FIG. 2a is similar to the gluing device according to FIG. 1a and has differences only in the means for gluing.
  • two rows of two-substance spray nozzles 81 and 82 are arranged opposite each other, which are provided for gluing the emerging from the shaft portion 22 designated by the reference numeral 83 fibers by ejecting glue and air ,
  • the fibers 83 are deflected in the transition from the shaft section 22 to the suction hood 39 and spatially expanded due to different weight. As a result, a large contact surface of the fibers 83 is created for a glue application.
  • the spray nozzles 81, 82 are each connected via a connecting hose to a separate glue pump (not shown).
  • the supply of the spray nozzles with glue liquor is carried out in the same manner as in the gluing device according to FIG. 1a.
  • the air required by the spray nozzles 81, 82 is provided from a general air supply.
  • FIG. 2b again differs from that according to FIG. 2a only in that the glued fibers are sucked upwards by the pneumatic transport device 13.
  • the embodiments according to FIG. 2 may also have guide plates 42 in accordance with FIG. 1 b in the shaft section 22.
  • FIG. 3 a shows a gluing device which is symmetrical with respect to a longitudinal axis of a section of the pneumatic conveying device 13.
  • a Beleimungsappel 86 and 87 which corresponds in principle to the gluing device according to FIG. 2a.
  • the gluing means are not shown in FIG. 3a.
  • Identical parts of the two gluing units 86, 87 of the double gluing device are each designated by the same reference numerals.
  • this has the advantage that a good mixing of the fibers through the frontally colliding fiber streams 36 takes place without mixing tools are used. Also for smaller throughput
  • the double gluing device can be used to achieve the very useful remixing.
  • the double gluing device as shown in FIG. 3b, it may be provided that the glued fibers are sucked upwards by the pneumatic transport device 13.
  • a gluing device which operates on the principle of gluing device according to Fig. 2a, again with the special gluing means are not shown.
  • the gluing device according to FIG. 4 a has a fiber-sighting unit 90.
  • the outlet opening 23 of the shaft section 22 opens into the suction hood 39 of the pneumatic conveying device 13.
  • an inlet 91 of a coarse material discharge shaft 92 is arranged.
  • the coarse material discharge chute 92 extends in the vertical direction and has a coarse material discharge 93 at its lower end. Above the coarse material discharge 93, air supply openings 94 are arranged. Over the cross section of the coarse material discharge chute 92 air regulating flaps 95 are attached. Adjacent to the inlet 91 are adjusting flaps 96 and 97 are arranged.
  • the Fasersichtermati 90 is based on the following operation:
  • the emerging from the outlet opening 23 fibers of the fiber stream 36 reach the suction hood 39 of the pneumatic transport device 13.
  • Light Normal 98 so average heavy individual fibers describe, due to their relatively low kinetic energy after exiting the Chute section 22 approach a short throw parabola, to then be taken by the direction in the pneumatic transport device 13 downwards indicated by the arrow 38 transport air flow.
  • Grobgut 99 which is heavier than the normal material 98, describes by the higher kinetic energy a longer throw parabola and thus enters The coarse material discharge chute 92.
  • the adjustment flap 96 is adjustable in height and angle and serves to adjust the speed and the direction of the downward air flow in the suction hood 39. In this way, influence can be made on the parafoil of the fiber flow 36 after emerging from the chute section 22.
  • the air velocity in the coarse material discharge chute 92 is firstly determined by the amount of negative pressure prevailing in the fiber separator unit 90, which in turn is adjustable by the air throttle 35 in the upper channel section 40 of the pneumatic transport device 13, and secondly by the air regulation flaps 95 certainly.
  • the variable in height adjustable flap 97 the opening cross-section of the inlet 91 can be adjusted.
  • FIGS. 5a and 5c show a gluing device which essentially comprises a gluing device according to FIG. 1a and a gluing device according to FIG. 4a and thus has a first subunit 113 and a second subunit 114.
  • the gluing device is used for gluing dried fibers in two stages. It has a fiber dryer 115, wherein a tube 116 in which the fibers are dried is only partially shown.
  • the tube 116 opens into a cyclone 117, whose discharge 1 is connected to the fiber transverse distribution device 2. Via an outlet 118 exhaust air and water vapor are removed from the cyclone 117.
  • the fan 12 of the pneumatic transport device 13 is connected on the output side to a transport line 119, which opens into a second cyclone 120, which is part of the second subunit 114.
  • the discharge 1 of the cyclone 120 is in turn connected to the fiber transverse distribution device 2, which opens into the metering bunker 3 of the second subunit 114.
  • the fan 12 of the second subunit 114 is connected on the output side to a transport line 121, which leads to a molding machine, not shown. From the molding machine, as indicated by the arrow 38 of the second subunit 114, via a line 122, return air is fed into the pneumatic transport device 13 of the second subunit 114.
  • the gluing device according to FIG. 5 a is designed such that, given a desired solid resin content of 10%, based on atro fibers, 5% solid resin is assigned to the first gluing step given by the first subunit 113. From the first subunit 113, the fibers are transported via the transport line 119 into the cyclone 120 and then arrive in the dosing hopper 3 of the second subunit 114, which is required as in the gluing device according to FIG. 4a, to the fibers for the intended proportional admixture of To be able to dose glue.
  • the other features the second subunit 114 are the same as in the device of FIG. 4a.
  • the gluing step given by the second subunit 114 is allocated a further 5% of solid resin.
  • This two-stage gluing is compared to the single-stage gluing with one of the gluing devices according to FIGS. 1 to 3 associated with relatively little overhead, since a sifting of the glued fibers is always required.

Abstract

Dried fibers which are designated for the production of fiber boards are supplied to a fiber roller (17) from a metering device through a feed chute (10) which is subjected to negative pressure, which fiber roller is provided on its surface with a plurality of pins (18) and rotates in such a manner that the fibers (14) are deflected by the pins (18), are directed along a chute section (22) defined by means of a partial section (20) of the periphery of the fiber roller (17) and an opposite-lying wall (21) and gluing means and said fibers are accelerated to approximately the peripheral speed of the fiber roller (17) by means of the pins (18) and an air flow generated by said pins. The fibers (36) lie against a section of the wall and are glued in the region of or adjacent to one end of the wall section and exit at an outlet orifice (23) of the chute section (22). In the case of an alternative process, after exiting the chute section substantially horizontally the fibers are deflected in an upward or downward direction and are glued in this region by means of at least one spray nozzle.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Beleimen von zur Herstellung von Faserplatten vorgesehenen, getrockneten Fasern. Die Fasern sind vorzugsweise aus lignozellulose- und/oder zellulasehaftigen Materialien. Bei den Faserplatten handelt es sich um leichte, mitteldichte oder hochdichte Faserplatten. Ein solches Verfahren ist aus DE-A-1 078 759 bekannt.The invention relates to a method and a device for gluing provided for the production of fiberboard, dried fibers. The fibers are preferably of lignocellulosic and / or cellulase-based materials. The fiberboards are lightweight, medium density or high density fiberboard. Such a method is known from DE-A-1 078 759.

Es ist üblich, Fasern, die zur Herstellung von MDF- oder HDF-Platten vorgesehen sind, im nassen Zustand zu beleimen. Mit dieser sogenannten Blow-line-Beleimung wird das Bindemittel in ein im Eingangsbereich des-Rohrtrockners endendes Blasrohr hinter einem Refiner auf die nassen, noch heißen Fasern gesprüht. Anschließend werden die Fasern getrocknet. Die Blow-line-Beleimung ermöglicht eine gleichmäßige Faserbeleimung und damit eine Vermeidung von Klumpenbildung durch Fasern und Leim. Ein wesentlicher Nachteil der Blow-line-Beleimung liegt jedoch in einem relativ hohen Leimverbrauch (siehe z.B.: Buchhoizer, P., Leimveriusten auf der Spur, S. 22 - 24, MDF-Magazin 1999). Der erhöhte Verbrauch an Leim ist dadurch verursacht, dass ein Teil der Reaktivität des Leims während des Trocknungsprozesses der Fasern aufgrund der hohen Temperaturen verloren geht. So ist in dem Trocknersystem die Emission von Formaldehyd, das aus dem Leim herrührt, erheblich, wodurch eine aufwendige Schadstoffminimierung erforderlich ist. Ein weiterer Nachteil der Blow-line-Beleimung besteht darin, dass die auf diese Weise beleimten Fasern aufgrund einer Voraushärtung im Trockner eine geringe Kaltklebrigkeit aufweisen, so dass ein aus den Fasern geformtes Faservlies nach dem Vorpressen eine große Rückfederungstendenz aufweist. Dies kann beim Verpressen des Faservlieses aufgrund einer hohen Luftverdrängung aus dem Faservlies zur Zerstörung des Faservliesgefüges führen.It is customary to glue fibers, which are intended for the production of MDF or HDF boards, in the wet state. With this so-called blow-line gluing, the binder is sprayed into a blowing tube ending in the entrance area of the tube dryer behind a refiner onto the wet, still hot fibers. Subsequently, the fibers are dried. The blow-line gluing allows a uniform fiber gluing and thus avoiding lump formation through fibers and glue. However, a major disadvantage of the blow-line gluing lies in a relatively high glue consumption (see, for example: Buchhoizer, P., Leimveriusten on the track, p. 22 - 24, MDF magazine 1999). The increased consumption of glue is caused by some of the reactivity of the glue being lost during the drying process of the fibers due to the high temperatures. Thus, in the dryer system, the emission of formaldehyde, which originates from the glue, considerably, whereby a complex pollution minimization is required. A further disadvantage of the blow-line gluing is that the fibers glued in this way have a low cold stickiness due to a pre-curing in the dryer, so that a fiber web formed from the fibers has a great tendency to spring back after the pre-pressing. This can be done while pressing of the nonwoven fabric due to a high air displacement from the nonwoven fabric lead to the destruction of the nonwoven fabric structure.

Die Nachteile der Blow-line-Beleimung können durch eine Beleimung der Fasern im trockenen Zustand vermieden werden. So ist bekannt, getrocknete Fasern in einem Mischer zu beleimen. Die Trockenbeleimung von Fasern in Mischern weist jedoch den Nachteil auf, dass Faseragglomerate und -verfilzungen entstehen, die zu einer ungleichmäßigen Faserbeleimung und einer unerwünschten Ausbildung von Leimflecken in den Plattenoberflächen führen (siehe a.a.O.). Eine Trockenbeleimungsmaschine, bei der Mischwerkzeuge vorgesehen sein können, ist z.B. in der EP 0 744 259 B1 beschrieben.The disadvantages of blow-line gluing can be avoided by gluing the fibers in the dry state. It is known to glue dried fibers in a mixer. However, the dry sizing of fibers in mixers has the disadvantage of producing fiber agglomerates and mats which result in uneven fiber sizing and undesirable formation of sizing stains in the sheet surfaces (see, supra). A dry gluing machine in which mixing tools can be provided is known e.g. in EP 0 744 259 B1.

Aus der EP 0 728 562 A2 ist ein Verfahren zur Trockenbeleimung von Fasern bekannt, bei dem in einer pneumatischen Förderleitung durch Erzeugung einer hohen Turbulenz eine Auflockerung des Faserstromes aufgrund reduzierter Strömungsgeschwindigkeit erfolgt und die Fasern in dieser Auflockerungszone durch Besprühen benetzt werden.EP 0 728 562 A2 discloses a process for the dry gluing of fibers in which a loosening of the fiber stream takes place in a pneumatic conveying line by generating a high turbulence due to a reduced flow velocity and the fibers are wetted by spraying in this loosening zone.

In der DE 199 30 800 A1 ist ein Verfahren zur Trockenbeleimung von Fasern beschrieben, bei dem die Beleimung in einem Endabschnitt eines Rohrtrockners erfolgt. Über dieses Verfahren liegen u.E. noch keine Erfahrungen aus einer industriellen Erprobung vor. Nachteilig erscheint bei diesem Verfahren, dass ein sehr hoher Heißgas- und Wasserdampfanteil zusammen mit den Fasern die Beleimungszone durchlaufen muss, da es zwingend notwendig ist, dass der Leim beim Eindüsen in die Beleimungszone auf kleinste Teilchen zerstäubt wird. Bei diesem hohen Heißgas- und Wasserdampfanteil, der bei dem Verfahren unmittelbar nach dem Beleimungsprozess mittels eines Zyklons von den Fasern getrennt wird, ist anzunehmen, dass ein Teil des Leims mit dem Heißgas und dem Wasserdampf aus dem Fasergemisch in die Atmosphäre entweicht. Weiterhin können bei diesem bekannten Verfahren Probleme in Bezug auf die Gleichmäßigkeit der Beleimung angesichts der erzeugten, dem Zufall unterworfenen Luftturbulenzen gegeben sein. Ferner erscheint es bei diesem Verfahren schwierig, die Trocknungsfeuchte der Fasern innerhalb der für den weiteren Prozess sehr wichtigen Toleranzen von +/- 0,5 % des Sollwertes unter Kontrolle zu halten.DE 199 30 800 A1 describes a process for the dry gluing of fibers, in which the gluing takes place in an end section of a tube dryer. We do not have any experience from industrial testing with this process. The disadvantage of this method is that a very high proportion of hot gas and water vapor must pass through the gluing zone together with the fibers, since it is absolutely necessary for the glue to be atomized onto the smallest particles when it is injected into the gluing zone. With this high proportion of hot gas and water vapor, which is separated from the fibers in the process immediately after the gluing process by means of a cyclone, it can be assumed that part of the glue with the hot gas and the water vapor escapes from the fiber mixture into the atmosphere. Furthermore, in this known method, problems may be encountered with respect to the uniformity of the gluing in view of the generated, randomized air turbulence. It also appears at This method is difficult to keep the drying moisture of the fibers within the very important for the further process tolerances of +/- 0.5% of the setpoint under control.

Ferner sei noch erwähnt, dass seit geraumer Zeit Beleimungsvorrichtungen vom Typ des sog. "roller blender" bekannt sind, bei denen Leim mittels Walzen auf Holzpartikel aufgebracht wird (Maloney, Thomas M., "Modem Particleboard & Dry-Process Fiberboard Manufacturing". S. 439 f, Miller Freeman Publ. 1977, San Franzisco, Ca., USA).It should also be mentioned that for some time now gluing devices of the type known as "roller blenders" are known in which glue is applied to wood particles by means of rolling (Maloney, Thomas M., "Modem Particleboard & Dry-Process Fiberboard Manufacturing" 439f, Miller Freeman Publ. 1977, San Francisco, Ca., USA).

Der Erfindung liegt die Aufgabe zugrunde, mit hoher Gleichmäßigkeit möglichst viel Oberfläche der Fasern mit Bindemittel zu benetzen.The invention has for its object to wet with high uniformity as much surface of the fibers with binder.

Die Aufgabe wird hinsichtlich des Verfahrens durch die Merkmale des Anspruchs 1 gelöst. Die Fasern werden von einer Dosiereinrichtung durch einen Zuführschacht einer Faserwalze zugeführt, die auf ihrer Oberfläche mit einer Vielzahl von vorzugsweise konischen Stiften versehen ist. Durch Rotation der Faserwalze werden die Fasern in einen Schachtabschnitt umgelenkt und durch die Stifte und einen durch die Stifte erzeugten Luftstrom auf annähernd die Umfangsgeschwindigkeit der Faserwalze beschleunigt. Der Schachtabschnitt ist durch einen Teilabschnitt des Umfangs der Faserwalze und eine gegenüberliegende Wandung begrenzt. An einer Austrittsöffnung des Schachtabschnitts treten die Fasern im Wesentlichen in horizontaler Bewegungsrichtung aus und werden anschließend nach unten oder nach oben abgesaugt und dadurch umgelenkt. Im Umlenkbereich werden die Fasern mittels mindestens einer Sprühdüse, die Leim und Luft unter Druckbeaufschlagung ausstößt, beleimt.The object is achieved with regard to the method by the features of claim 1. The fibers are supplied by a metering device through a feed chute of a fiber roll, which is provided on its surface with a plurality of preferably conical pins. By rotation of the fiber roll, the fibers are deflected into a chute section and accelerated by the pins and a stream of air generated by the pins to approximately the peripheral speed of the fiber roll. The manhole section is bounded by a section of the circumference of the fiber roll and an opposite wall. At an outlet opening of the shaft section, the fibers emerge essentially in the horizontal direction of movement and are then sucked downwards or upwards and thereby deflected. In the deflection region, the fibers are glued by means of at least one spray nozzle which emits glue and air under pressure.

Die Fasern verfassen in einem Faserstrom den Zuführschacht und treffen auf die Faserwatze. Durch die Einwirkung der auf der schnell rotierenden Faserwalze angeordneten Stifte werden die Fasern nicht nur umgelenkt, sondem auch stark beschleunigt, wodurch Ungleichmäßigkeiten wie Faseragglomerate beseitigt werden. Ferner wird der Faserstrom durch die Beschleunigung der Fasern in Strömungsrichtung um ein Vielfaches im Vergleich zu den Fasern in dem Zuführschacht gestreckt. Auf diese Weise ist dafür gesorgt, dass die Fasern im Umlenkbereich sehr fein verteilt sind und dadurch eine sehr große Kontaktfläche für den aus den Sprühdüsen austretenden Leim bieten.The fibers compose the feed chute in a stream of fibers and strike the fiber wad. By the action of the pins arranged on the rapidly rotating fiber roll, the fibers are not only deflected, but also strongly accelerated, whereby irregularities such as fiber agglomerates are eliminated. Further, the fiber flow by the acceleration of the fibers in the flow direction many times compared to the fibers in stretched the feed slot. In this way it is ensured that the fibers are very finely distributed in the deflection and thus provide a very large contact surface for the emerging from the spray nozzles glue.

Bei diesem Verfahren kann vorgesehen sein, dass die Fasern mindestens einmal im Verlauf des Schachtabschnitts durch ein Leitblech in Berührung mit den Stiften der Faserwalze gebracht werden. Das Leitblech ist dazu rampenartig in Richtung der Stifte geneigt. Der durch das Leitblech umgelenkte und dadurch stark abgebremste Faserstrom wird von den Stiften der rotierenden Faserwalze erfasst und wieder auf die ursprüngliche Geschwindigkeit beschleunigt. Aufgrund der erneuten Beschleunigung durch die Stifte erreichen die Fasern wieder ihre ursprüngliche Geschwindigkeit und werden einem weiteren Prozess zur Auflösung von Ungleichmäßigkeiten unterzogen. Aufgrund der Zentrifugalkraft werden die Fasern gegen einen weiteren Wandungsabschnitt geschleudert und von diesem wiederum geführt. Es kann ein weiteres Leitblech folgen, das eine erneute Rückführung der Fasern in den Wirkungsbereich der Faserwalze bewirkt.In this method, it can be provided that the fibers are brought into contact with the pins of the fiber roll at least once in the course of the chute section by a guide plate. The baffle is ramped inclined towards the pins. The deflected by the baffle and thus greatly braked fiber flow is detected by the pins of the rotating fiber roll and accelerated back to the original speed. Due to the renewed acceleration by the pins, the fibers return to their original speed and undergo another process of resolution of unevenness. Due to the centrifugal force, the fibers are thrown against another wall section and guided by this again. It may be followed by another baffle, which causes a further return of the fibers in the sphere of action of the fiber roll.

Vorzugsweise sind die Leitbleche im Winkel zur Strömungsrichtung der Fasern verstellbar. Dadurch kann der Grad der Abbremsung der Fasern variiert werden. Die Leitbleche sind ferner vorzugsweise einstückig Ober die gesamte Arbeitsbreite des Schachtabschnitts angeordnet.Preferably, the baffles are adjustable at an angle to the flow direction of the fibers. Thereby, the degree of deceleration of the fibers can be varied. The baffles are also preferably arranged integrally over the entire working width of the shaft section.

Es können so viele Leitbleche im Verlauf des Schachtabschnitts nacheinander angeordnet sein, wie dies die Länge des Schachtabschnitts und die Drehzahl der Faserwalze erlaubt. Auf diese Weise werden die Fasern unter vollständiger Ausnutzung der Länge des Schachtabschnitts mehrfach einem Auflösungsprozess durch Einwirkung der Stifte der Faserwalze unterworfen.As many baffles can be arranged one after another in the course of the shaft section, as permitted by the length of the shaft section and the rotational speed of the fiber roller. In this way, taking full advantage of the length of the duct section, the fibers are repeatedly subjected to a dissolution process by the action of the pins of the fiber roller.

Die Fasern können dabei in einen Kanal einer pneumatischen Transporteinrichtung umgelenkt werden, wobei im Umlenkbereich durch gegenüberliegend angeordnete Sprühdüsen der Leim auf die Fasern aufgesprüht wird.The fibers can be deflected into a channel of a pneumatic transport device, wherein the glue is sprayed onto the fibers in the deflection by oppositely arranged spray nozzles.

Bei dem erfindungsgemäßen Verfahren kann vorgesehen sein, dass die Geschwindigkeit, mit der die Fasern auf die Faserwalze treffen, durch Einstellung des in dem Zuführschacht herrschenden Unterdrucks bestimmt werden kann.In the method according to the invention it can be provided that the speed with which the fibers strike the fiber roll can be determined by adjusting the negative pressure prevailing in the feed chute.

Ferner kann das Verfahren in der Weise eingesetzt werden, dass symmetrisch einander gegenüberliegend angeordnete Faserströme vorgesehen sind, in denen die Fasern nach demselben Verfahren beleimt werden, wobei die Faserströme nach Austreten aus der Austrittsöffnung des Schachtabschnitts aufeinanderprallen. Ein solches Doppelbeleimungsverfahren ist insbesondere für hohe Faser-Durchsatzleistungen bis zu 30 t atro/h geeignet. Dadurch, dass die Faserströme nach der Leimauftragung frontal aufeinanderprallen, was vorzugsweise bei einem Eintritt in einen Lufttransportschacht stattfindet, erfolgt eine gute Nachmischung der Fasern.Furthermore, the method can be used in such a way that symmetrically arranged opposite fiber streams are provided, in which the fibers are glued by the same method, wherein the fiber streams after exiting from the outlet opening of the manhole section collide. Such a double gluing process is particularly suitable for high fiber throughput rates of up to 30 t atro / h. Due to the fact that the fiber streams collide head-on after the glue application, which preferably takes place when entering an air transport shaft, the fibers are mixed thoroughly.

An das beschriebene Beleimungsverfahren kann sich auch unmittelbar eine Sichtung der Fasern anschließen. In diesem Fall wird die unterschiedliche Wurfweite von Teilchen unterschiedlicher Masse beim Austritt aus dem Schachtabschnitt zu einer Luftfasersichtung genutzt.The sizing method described may also be followed immediately by a sifting of the fibers. In this case, the different throw of particles of different mass at the exit from the shaft section is used to an air-fiber direction.

Es kann sich an das erfindungsgemäße Beleimungsverfahren ein eigenständiges Verfahren zur Fasersichtung anschließen. Bei solch einem Luftfasersichtungs-Verfahren kann es sich beispielsweise um das in der deutschen Patentanmeldung 100 25 177.3 beschriebene Fasersichtungs-Verfahren, dem ein Verfahren zum Auflösen von Ungleichmäßigkeiten in einem Faserstrom vorangeht, handeln. Es kann sich aber auch die Formung eines Faservlieses anschließen, beispielsweise nach dem in der genannten deutschen Patentanmeldung beschriebenen Verfahren.It may follow the self-adhesive process according to the invention an independent method for fiber orientation. Such an airfoil sealing process may, for example, be the fiber-coating process described in German patent application 100 25 177.3, which is preceded by a process for dissolving irregularities in a fiber stream. But it may also be followed by the formation of a nonwoven fabric, for example by the method described in said German patent application.

Es kann ferner eine stufenweise Beleimung der Fasern derart vorgesehen sein, dass die Fasern zunächst in einem der oben beschriebenen Beleimungsverfahren, die keine sich unmittelbar anschließende Sichtung der Fasern aufweisen, in einem gewünschten bezogen auf den Endbeleimungszustand verringerten Maße beleimt werden und in einem weiteren sich anschließenden Beleimungsverfahren, das wie oben beschrieben eine unmittelbare Sichtung der Fasern aufweist, noch einmal beleimt werden, um den gewünschten Endzustand der Beleimung zu erreichen. So können beispielsweise bei einem erwünschten Festharzanteil von 10 % bezogen auf atro Fasern 5 % Festharz der ersten Beleimungsstufe ohne Fasersichtung und 5 % Festharz der zweiten Beleimungsstufe mit Fasersichtung zugeteilt werden. Die Vorteile dieser Faserbeleimung in Stufen bestehen darin, dass weniger Leimdurchsatz pro Beleimungsstufe und damit pro einzelner Beleimungsvorrichtung erforderlich ist, was zu eine Reduzierung von Klumpenbildung durch Fasern und Leim führt, ferner darin, dass eine bessere Leimverteilung auf die Fasern durch multiple Beleimung und Vermischung stattfindet und eine Reduzierung der inneren Verschmutzung der einzelnen Beleimungsvorrichtung durch ein reduziertes Leim-Faserverhältnis pro Beleimungsstufe.It may further be provided a stepwise gluing of the fibers such that the fibers are first glued in one of the above-described Beleimungsverfahren having no immediate subsequent sighting of the fibers, in a desired relative to the final gluing reduced dimensions and in another subsequent Gluing method, as described above, a direct sighting of Has fibers, glued again to achieve the desired final state of the gluing. Thus, for example, given a desired solid resin content of 10% based on atro fibers, 5% of solid resin of the first gluing stage without fiber direction and 5% of solid resin can be assigned to the second gluing stage with fiber direction. The advantages of this in-step fiber sizing are that less glue throughput is required per gluing step and thus per individual sizing device, resulting in a reduction in fiber and glue lumping, and in that there is better glue distribution to the fibers through multiple sizing and blending and a reduction in the internal contamination of the individual gluing device due to a reduced glue fiber ratio per gluing step.

Es kann auch eine stufenweise Beleimung in mehr als zwei Stufen vorgesehen sein. Ferner kann auch beispielsweise eine Beleimung in zwei Beleimungsstufen vorgenommen werden, bei denen sich jeweils keine Sichtung unmittelbar anschließt.It may also be provided a gradual gluing in more than two stages. Furthermore, for example, a gluing can be carried out in two gluing stages, in which no screening is immediately followed.

Die Aufgabe wird hinsichtlich der Vorrichtung durch die Merkmale des Anspruchs 8 gelöst. Hier ergeben sich im Wesentlichen die gleichen Vorteile, wie sie zuvor im Zusammenhang mit Anspruch 1 erwähnt wurden. Vorzugsweise Ausgestaltungen der Vorrichtung sind in den Ansprüchen 9 bis 12 aufgeführt.The object is achieved with respect to the device by the features of claim 8. Essentially, there are the same advantages as mentioned above in connection with claim 1. Preferably embodiments of the device are listed in claims 9 to 12.

Die Vorrichtung gemäß Anspruch 13 dient der oben beschriebenen stufenweisen Beleimung der Fasern. Dabei schließt sich an eine Beleimungsvorrichtung ohne Fasersichtung eine Beleimungsvorrichtung mit Fasersichtung an. Hierbei ergeben sich die zuvor im Zusammenhang mit Anspruch 7 erwähnten Vorteile.The device according to claim 13 serves the above-described stepwise gluing of the fibers. This is followed by a gluing device with fiber direction to a gluing device without fiber direction. This results in the advantages mentioned above in connection with claim 7.

Die erfindungsgemäße Vorrichtung kann auch in analoger Weise so ausgelegt sein, dass die Zufuhr der Fasern an dem unteren Ende des Schachtabschnitts und der Austritt an dem oberen Ende stattfindet. Dabei ist die Dosiereinrichtung unterhalb der Faserwalze angeordnet, und die Fasern werden durch die Sogwirkung der Faserwalze zu dem Schachtabschnitt gezogen.The device according to the invention can also be designed in an analogous manner so that the supply of the fibers takes place at the lower end of the shaft section and the exit at the upper end. In this case, the metering device is arranged below the fiber roll, and the fibers are pulled by the suction effect of the fiber roll to the shaft section.

Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen näher erläutert, wobei auf die Figuren Bezug genommen wird. Es zeigen:

  • Fig. 1a schematisch eine Teilansicht einer Beleimungsvorrichtung mit Leimschlitzdüsen, die jedoch von dieser Erfindung nicht umfasst ist, aber zur Erläuterung der Ausführungsbeispiele dient,
  • Fig. 1b schematisch eine Teilansicht des Schachtabschnitts einer Beleimungsvorrichtung, die bis auf Leitbleche im Schachtabschnitt wie die Beleimungsvorrichtung gemäß Fig. 1a ausgebildet ist,
  • Fig. 2a schematisch eine Teilansicht einer Beleimungsvorrichtung mit Leimsprühdüsen, bei der die beleimten Fasern nach unten abgesaugt werden,
  • Fig. 2b schematisch eine Teilansicht einer Beleimungsvorrichtung mit Leimsprühdüsen, bei der die beleimten Fasern nach oben abgesaugt werden,
  • Fig. 3a schematisch eine Teilansicht einer Beleimungsvorrichtung, bei der zwei symmetrisch einander gegenüberliegend angeordnete Faserströme vorgesehen sind und die beleimten Fasern nach unten abgesaugt werden,
  • Fig. 3b schematisch eine Teilansicht einer Beleimungsvorrichtung, bei der zwei symmetrisch einander gegenüberliegend angeordnete Faserströme vorgesehen sind und die beleimten Fasern nach oben abgesaugt werden.
  • Fig. 4a schematisch eine Teilansicht einer Beleimungsvorrichtung mit integriertem Fasersichter, bei der die beleimten Fasern nach unten abgesaugt werden,
  • Fig. 4b schematisch eine Teilansicht einer Beleimungsvorrichtung mit integriertem Fasersichter, bei der die beleimten Fasern nach oben abgesaugt wer den,
  • Fig. 5a schematisch eine Teilansicht einer Beleimungsvorrichtung zur stufenweisen Beleimung, bei der die beleimten Fasern jeweils nach unten abgesaugt werden,
  • Fig. 5b schematisch eine Teilansicht einer Beleimungsvorrichtung zur stufenweisen Beleimung, bei der die beleimten Fasern jeweils nach oben abgesaugt werden,
  • Fig. 5c einen vergrößerten Ausschnitt der Fig. 5a, und
  • Fig. 5d einen vergrößerten Ausschnitt der Fig. 5b.
In the following the invention will be explained in more detail by means of embodiments, reference being made to the figures. Show it:
  • 1a shows schematically a partial view of a gluing device with glue slot nozzles, which, however, is not included in this invention, but serves to explain the exemplary embodiments,
  • FIG. 1 b shows a schematic view of a part view of the shaft section of a gluing device, which, except for guide plates in the shaft section, is designed like the gluing device according to FIG. 1 a, FIG.
  • 2a is a schematic partial view of a gluing device with glue spray nozzles, in which the glued fibers are sucked down,
  • 2b schematically shows a partial view of a gluing device with glue spraying nozzles, in which the glued fibers are sucked upwards,
  • 3a schematically shows a partial view of a gluing device, in which two symmetrically oppositely arranged fiber streams are provided and the glued fibers are sucked down,
  • Fig. 3b shows schematically a partial view of a gluing device, in which two symmetrically arranged opposite fiber streams are provided and the glued fibers are sucked up.
  • 4a schematically shows a partial view of a gluing device with integrated fiber separator, in which the glued fibers are sucked down,
  • 4b schematically shows a partial view of a gluing device with integrated fiber separator, in which the glued fibers are sucked up the who,
  • 5 a shows a schematic view of a partial view of a gluing device for the stepwise gluing, in which the glued fibers are in each case sucked downwards,
  • 5b schematically shows a partial view of a gluing device for stepwise gluing, in which the glued fibers are in each case sucked upwards,
  • Fig. 5c is an enlarged detail of Fig. 5a, and
  • Fig. 5d is an enlarged detail of Fig. 5b.

Die Beleimungsvorrichtung gemäß Fig. 1a weist eine an einen Austrag 1 eines nicht gezeigten Fasertrockners angeschtossene Faser-Querverteilungseinrichtung 2 auf. An die Querverteilungseinrichtung 2 schließt sich ein Dosierbunker 3 an, der durch die Querverteilungseinrichtung 2 gleichmäßig mit getrockneten Holzfasern 4 befüllt wird. Mittels eines Bodenbandes 5 werden die Holzfasern 4 einem Dosierbunkeraustrag mit Austragswalzen 6 zugeführt. Durch die Austragswalzen 6 werden größere Verklumpungen der Fasern 4 aufgelöst. Das Bodenband 5 läuft über eine Wägeeinrichtung 7, die in kontinuierlicher Weise das laufende Faserdurchsatzgewicht (Gewicht pro Zeiteinheit) erfasst.The gluing device according to FIG. 1 a has a fiber transverse distribution device 2 joined to a discharge 1 of a fiber dryer, not shown. The transverse distribution device 2 is adjoined by a metering bunker 3, which is filled uniformly with dried wood fibers 4 by the transverse distribution device 2. By means of a bottom belt 5, the wood fibers 4 are fed to a Dosierbunkeraustrag with discharge rollers 6. By the discharge rollers 6 larger clumps of the fibers 4 are dissolved. The Bottom band 5 passes over a weighing device 7, which continuously detects the current fiber throughput weight (weight per unit of time).

Von dem Dosierbunkeraustrag gelangen die Fasern 4 in einen aus zwei Formwänden 8 und 9 gestalteten Zuführschacht 10, der an einem oberen Ende eine Luftzuführung 11 aufweist.From the Dosierbunkeraustrag reach the fibers 4 in one of two mold walls 8 and 9 designed feed chute 10, which has an air supply 11 at an upper end.

Durch einen Ventilator 12 einer pneumatischen Transporteinrichtung 13, die in Fig. 1a nur teilweise mit einem zu der Beleimungsvorrichtung gehörenden TeiL abschnitt dargestellt ist, wird im Zuführschacht 10 ein Gemisch aus Fasern und Luft angesaugt, wobei sich die Fasern in einem Faserstrom 14 vermehrt entlang der Formwand 9 und sich die Luft vermehrt in einem Luftstrom entlang der Formwand 8 bewegen. An der Formwand 9 ist ein Elektromagnet 15 zur Aussonderung von Metallteilen aus dem Faserstrom 14 angebracht.By a fan 12 of a pneumatic transport device 13, which is shown in Fig. 1a only partially with a belonging to the gluing device TeiL section, a mixture of fibers and air is sucked in the feed chute 10, wherein the fibers in a fiber stream 14 increases along the Mold wall 9 and the air increasingly move in an air flow along the mold wall 8. On the mold wall 9, an electromagnet 15 for the separation of metal parts from the fiber stream 14 is attached.

Im Bereich einer Austrittsöffnung 16 des Zuführschachts 10 trifft der Faserstrom 14 auf eine Faserwalze 17, die zur Auflösung von Ungleichmäßigkeiten in dem Faserstrom 14 und zur Beschleunigung der Fasern in dem Faserstrom 14 dient Auf der Oberfläche der Faserwalze 17 ist eine Vielzahl von Stiften 18 angeordnet, die sich mit größer werdendem Abstand zur Drehachse der Faserwalze 17 konisch zu einer Spitze verjüngen. Die Faserwalze 17 rotiert mit hoher Geschwindigkeit in der durch den Pfeil 19 angedeuteten Drehrichtung. Die Umfangsgeschwindigkeit der Faserwalze 17 ist variabel und kann 20 bis 100 m/sec betragen. Der Durchmesser der Faserwalze 17 kann beispielsweise 1000 mm und die Länge der Faserwalze 17 beispielsweise 1800 mm betragen. In diesem Fall handelt es sich bei den konischen Stiften 18 ca. um 10.000 Stück.In the region of an outlet opening 16 of the feed chute 10, the fiber stream 14 impinges on a fiber roll 17 which serves to dissolve irregularities in the fiber stream 14 and to accelerate the fibers in the fiber stream 14. A plurality of pins 18 are arranged on the surface of the fiber roll 17. which taper conically with increasing distance to the axis of rotation of the fiber roller 17 to a tip. The fiber roller 17 rotates at high speed in the direction indicated by the arrow 19 direction of rotation. The peripheral speed of the fiber roller 17 is variable and may be 20 to 100 m / sec. The diameter of the fiber roll 17 may be, for example, 1000 mm and the length of the fiber roll 17, for example 1800 mm. In this case, the conical pins 18 are about 10,000 pieces.

Ein Teilabschnitt 20 des Faserwalzenumfangs, eine der Faserwalze 17 gegenüberliegende Wandung 21 und unten beschriebene Beleimungsmittel begrenzen einen Schachtabschnitt 22, der sich etwa von der Austrittsöffnung 16 des Zuführschachts 10 bis zu dem tiefsten Punkt der Faserwalze 17 erstreckt und dort eine Austrittsöffnung 23 aufweist Der Verlauf der Wandung 21 ist so gestaltet, dass sich der Abstand zwischen der Spitze der Stifte 18 und der Wandung 21 von einer der Austrittsöffnung 16 des Zuführschachts 10 benachbarten Eintrittsöffnung 24 des Schachtabschnitts 22 bis zur Austrittsöffnung 23 progressiv vergrößert. Die Wandung 21 ist an einer Außenseite im Wesentlichen über ihre gesamte Länge mit einem wassergekühlten Kühlmantel 25 versehen.A section 20 of the fiber roll circumference, a fiber roll 17 opposite wall 21 and below described Beleimungsmittel limit a manhole section 22, which extends approximately from the outlet opening 16 of the feed chute 10 to the lowest point of the fiber roll 17 and there has an outlet opening 23 The course of Wall 21 is designed so that the distance between the tip of the pins 18 and the wall 21 of one of the outlet opening 16 of the feed chute 10 adjacent inlet opening 24 of the shaft portion 22 to the outlet opening 23 is progressively increased. The wall 21 is provided on an outer side substantially over its entire length with a water-cooled cooling jacket 25.

Im Bereich der Austrittsöffnung 23 ist über die gesamte Breite des Schachtabschnitts 22 eine Reihe von Leimschlitzdüsen 26 angeordnet. Die Austrittsöffnungen der Leimschlitzdüsen 26 befinden sich in einem Spalt 27. der von einem unteren Ende der Wandung 21 und einem Beleimungsbrett 28 gebildet ist. Jede Leimschlitzdüse 26 wird von einer separaten Verdrängerpumpe 29 über einen Verbindungschlauch 30 mit Leim aus einem Leimabzugsbehälter 31, der eine Leimabzugswaage 32 aufweist, versorgt. Zum Beispiel sind bei einer Prozessbreite von 1800 mm 25 Leimschlitzdüsen 26 mit einer Schlitzlänge von 72 mm und einer Schlitzbreite von 2 mm vorgesehen. Die Anzahl der Schtitzdüsen 26 lässt sich beliebig verändern. Die Leimpumpen 29 werden vorzugsweise über eine gemeinsame Antriebswelle 33 und einen gemeinsamen Antrieb 34 angetrieben. Dies gewährleistet eine gleichmäßige Durchsatzleistung aller Leimpumpen 29. Einzeln angetriebene Leimpumpen sind auch möglich. Das Seleimungsbrett 28, das unmittelbar an die Leimschlitzdüsen 26 anschließt, ist über die gesamte Breite des Schachtabschnitts 21 angeordnet Es ist in seinern Winkel zu dem Schachtabschnitt 22 einstellbar.In the region of the outlet opening 23, a row of glue slot nozzles 26 is arranged over the entire width of the shaft section 22. The outlet openings of the glue slot nozzles 26 are located in a gap 27 formed by a lower end of the wall 21 and a gluing board 28. Each glue slot nozzle 26 is supplied by a separate positive displacement pump 29 via a connection hose 30 with glue from a glue removal container 31, which has a glue removal balance 32. For example, with a process width of 1800 mm, 25 glue slot nozzles 26 are provided with a slot length of 72 mm and a slot width of 2 mm. The number of Schtitzdüsen 26 can be changed arbitrarily. The glue pumps 29 are preferably driven via a common drive shaft 33 and a common drive 34. This ensures a uniform throughput of all Leimpumpen 29. Individually powered Leimpumpen are also possible. Seleimungsbrett 28, which connects directly to the Leimschlitzdüsen 26 is disposed over the entire width of the shaft portion 21 It is at its angle to the shaft portion 22 adjustable.

Der Schachtabschnitt 22.mündet in die pneumatische Transporteinrichtung 13. Die Geschwindigkeit, mit der sich der Faserstrom 14 in dem Zuführschacht 10 auf die Austnttsöffnung 16 zu bewegt, ist über eine Luftdrossel 35 in einem oberen Kanalabschnitt 40 der pneumatischen Transporteinrichtung 13 einstellbar, indem ein durch den Ventilator 12 erzeugter Unterdruck im Bereich der Faserwalze 17 verändert wird.The shaft section 22 opens into the pneumatic transport device 13. The speed at which the fiber flow 14 moves in the feed chute 10 to the Austnttsöffnung 16 is adjustable via an air throttle 35 in an upper channel section 40 of the pneumatic transport device 13 by a through the fan 12 generated negative pressure in the fiber roller 17 is changed.

Dadurch, dass der Faserstrom 14 im Bereich der Austrittsöffnung 16 auf die mit hoher Geschwindigkeit rotierende Faserwalze 17 trifft und die Stifte 18 eine zur Bewegungsrichtung des Faserstroms 14 rechtwinklige Geschwindigkeitskomponente aufweisen, werden zusammenhängende oder verklumpte Fasern voneinander getrennt, wobei einzelne Fasern durch die Faserwalze 17 kaum beschädigt werden.Characterized in that the fiber stream 14 in the region of the outlet opening 16 meets the high-speed rotating fiber roll 17 and the pins 18 have a direction of movement of the fiber stream 14 rectangular velocity component, are coherent or lumpy fibers from each other separated, with individual fibers are hardly damaged by the fiber roll 17.

Ferner werden die Fasern durch die Faserwalze 17 in den Schachtabschnitt 22 umgelenkt. Im ersten Teil des Schachtabschnitts 22 findet durch die Trägheit der Fasern neben einem Durchkämmen der Fasern und dem damit verbundenen Auflösen von Faserklumpen eine Beschleunigung der Fasern auf annähernd die Umfangsgeschwindigkeit der Faserwalze 17 statt. Diese Fasergeschwindigkeit ist bei dieser Beleimungsvorrichtung ca. nach einem Viertel des Umfangs der Faserwalze 17 erreicht In diesem Bereich des Schachtabschnitts 22 sind die Fasern in einem Faserstrom 36 auf ein Vielfaches des Faserstroms 14 in dem Zuführschacht 10 gestreckt. Durch die Vielzahl der konischen Stifte 18 wird in dem Schachtabschnitt 22 ein Luftstrom erzeugt, der etwa der Umfangsgeschwindigkeit der Faserwalze 17 entspricht. Durch die Radialkräfte von Luft und Fasern streben die Fasern in dem Schachtabschnitt 22 zentrifugal nach außen und legen sich gegen eine Innenseite der Wandung 21 des Schachtabschnitts 22, so dass die konischen Stifte 18 der Faserwalze 17 nach ca. einem Viertel des Umfangs der Faserwalze 17 im Schachtabschnitt 22 nicht mehr mit den Fasern in Berührung sind.Furthermore, the fibers are deflected by the fiber roller 17 in the shaft section 22. In the first part of the chute section 22, due to the inertia of the fibers, in addition to combing through the fibers and the associated disintegration of fiber lumps, the fibers accelerate to approximately the circumferential speed of the fiber roll 17. In the case of this glueing device, this fiber speed is reached approximately one quarter of the circumference of the fiber roll 17. In this region of the chute section 22, the fibers are stretched in a fiber stream 36 to a multiple of the fiber flow 14 in the feed chute 10. Due to the large number of conical pins 18, an air flow which corresponds approximately to the peripheral speed of the fiber roller 17 is generated in the shaft section 22. Due to the radial forces of air and fibers, the fibers in the chute section 22 centrifugally outwardly and lie against an inner side of the wall 21 of the chute section 22, so that the conical pins 18 of the fiber roll 17 after about a quarter of the circumference of the fiber roll 17 in Chute section 22 are no longer in contact with the fibers.

Durch die durch die Streckung der Fasern bewirkte Auflösung des Faserstroms 36 und durch die über die gesamte Breite des Faserstroms 36 vorgesehene Leimübertragung, ergibt sich eine große Kontaktfläche für die Leimaufnahme.The dissolution of the fiber stream 36 caused by the stretching of the fibers and the glue transfer provided over the entire width of the fiber stream 36 result in a large contact surface for the glue receptacle.

Das Beleimungsbrett 28 dient zur Umlenkung des Faserstroms 36 in der Zeichenebene. Die Fasern üben dabei auf das Beleimungsbrett 28 einen Druck aus, der durch eine Einstellung des Winkels des Beleimungsbretts 28 zu dem Schachtabschnitt 22 einstellbar ist. Die Aufnahme von Leim 37 durch die Fasern wird dabei durch mechanischen Abrieb des Leims 37 auf dem Beleimungsbrett 28 bewirkt. Die Leimdosierung erfolgt nach einem vorbestimmten prozentualen Leimanteil bezogen auf atro Fasern im Verhältnis zu dem Faserdurchsatz, der über die Wägeeinrichtung 7 des Dosierbunkers 3 erfasst wird.The gluing board 28 serves to deflect the fiber stream 36 in the plane of the drawing. The fibers exert on the gluing board 28 a pressure which can be adjusted by adjusting the angle of the gluing board 28 to the chute section 22. The absorption of glue 37 by the fibers is effected by mechanical abrasion of the glue 37 on the gluing board 28. The glue metering is carried out according to a predetermined percentage glue content based on atro fibers in relation to the fiber throughput which is detected by the weighing device 7 of the metering hopper 3.

Die Fasern treten nach der Beleimung aus dem Schachtabschnitt 22 aus und werden durch die Schwerkraft und durch in Richtung des Pfeils 38 strömende Transportluft in eine Absaughaube 39 der pneumatischen Transporteinrichtung 13 unterhalb der Faserwalze 17 umgelenkt. Bei der Transportluft handelt es sich vorzugsweise um in einem geschlossenen Kreislauf geführte Rückluft oder um Frischluft.The fibers emerge from the shaft section 22 after gluing and are deflected by gravity and by transport air flowing in the direction of the arrow 38 into a suction hood 39 of the pneumatic transport device 13 below the fiber roller 17. The transport air is preferably return air guided in a closed circuit or fresh air.

In allen Zeichnungsfiguren sind gleiche Teile mit gleichen Bezugszahlen versehen.In all drawing figures, the same parts are given the same reference numbers.

Die Ausführungsform gemäß Fig. 1 b ist bis auf Leitbleche 42 im Schachtabschnitt 22 wie die Beleimungsvorrichtung gemäß Fig. 1a ausgebildet. Die Leitbleche 42 sind einstückig über die gesamte Arbeitsbreite des Schachtabschnitts 22 angeordnet. Sie sind in Strömungsrichtung der Fasern rampenartig geneigt, um die Fasern zu den Stiften 18 der Faserwalze 17 hin umzulenken. Dabei werden die Fasern abgebremst und von den sich schneller bewegenden Stiften 18 erfasst, wodurch erneut Ungleichmäßigkeiten in dem Faserstrom 36 aufgelöst werden können. Nachdem die Fasern durch die Stifte 18 wieder beschleunigt und auf die Umlaufgeschwindigkeit der Stifte 18 gebracht worden sind, legen sich die Fasern aufgrund der Zentrifugalkraft wiederum an die Wandung 21 an. Wie durch den Pfeil 43 angedeutet ist, können die Leitbleche 42 in ihrem Winkel zu der Strömungsrichtung des Faserstroms 36 eingestellt werden, wodurch insbesondere der Grad der Abbremsung der Fasern beeinflusst werden kann. Vorzugsweise können über den Verlauf des Schachtabschnitts 22 mehrere Leitbleche 42 angeordnet sein, so dass sich mehrere Wandungsabschnitte ergeben, an die sich die Fasern anlegen. Zwei dieser Wandungsabschnitte sind in Fig. 1 b gezeigt und mit den Bezugszeichen 21a und 21 b bezeichnet. Zwischen den Wandungsabschnitten 21a und 21 b befindet sich ein Bereich, in dem der Faserstrom 36 von den Stiften 18 durchkämmt wird.The embodiment according to FIG. 1 b is formed, except for baffles 42 in the shaft section 22, like the gluing device according to FIG. 1 a. The baffles 42 are arranged integrally over the entire working width of the shaft portion 22. They are ramped in the flow direction of the fibers to deflect the fibers to the pins 18 of the fiber roll 17 out. At this time, the fibers are decelerated and caught by the faster moving pins 18, whereby again unevenness in the fiber stream 36 can be resolved. After the fibers have been accelerated again by the pins 18 and brought to the rotational speed of the pins 18, the fibers again attach themselves to the wall 21 due to the centrifugal force. As indicated by the arrow 43, the baffles 42 can be adjusted in their angle to the flow direction of the fiber stream 36, whereby in particular the degree of deceleration of the fibers can be influenced. Preferably, a plurality of baffles 42 may be arranged over the course of the shaft section 22, so that there are a plurality of wall sections to which the fibers rest. Two of these wall sections are shown in Fig. 1 b and designated by the reference numerals 21 a and 21 b. Between the wall sections 21a and 21b is an area in which the fiber stream 36 is combed by the pins 18.

Die Ausführungsform gemäß Fig. 2a ist der Beleimungsvorrichtung gemäß Fig. 1a ähnlich und weist Unterschiede lediglich bei den Mitteln zur Beleimung auf.The embodiment according to FIG. 2a is similar to the gluing device according to FIG. 1a and has differences only in the means for gluing.

In einer mit entsprechenden Durchbrüchen versehenen Wandung 80 der Absaughaube 39 sind einander gegenüberliegend zwei Reihen von Zwei-Stoff-Sprühdüsen 81 und 82 angeordnet, die zur Beleimung der aus dem Schachtabschnitt 22 austretenden mit dem Bezugszeichen 83 bezeichneten Fasern durch Ausstoßen von Leim und Luft vorgesehen sind. Die Fasern 83 werden im Übergang von dem Schachtabschnitt 22 zu der Absaughaube 39 umgelenkt und aufgrund unterschiedlichen Gewichts räumlich aufgeweitet. Dadurch ist eine große Kontaktfläche der Fasern 83 für eine Leimauftragung geschaffen. Die Sprühdüsen 81,82 sind wie bei der Beleimungsvorrichtung gemäß Fig. 1a jeweils über einen Verbindungsschlauch mit einer separaten Leimpumpe (nicht gezeigt) verbunden. Die Versorgung der Sprühdüsen mit Leimflotte erfolgt in gleicher Weise wie bei der Beleimungsvorrichtung gemäß Fig. 1a. Die von den Sprühdüsen 81, 82 benötigte Luft wird aus einer allgemeinen Luftversorgung zur Verfügung gestellt.In a provided with corresponding openings wall 80 of the suction hood 39 two rows of two-substance spray nozzles 81 and 82 are arranged opposite each other, which are provided for gluing the emerging from the shaft portion 22 designated by the reference numeral 83 fibers by ejecting glue and air , The fibers 83 are deflected in the transition from the shaft section 22 to the suction hood 39 and spatially expanded due to different weight. As a result, a large contact surface of the fibers 83 is created for a glue application. As in the case of the gluing device according to FIG. 1 a, the spray nozzles 81, 82 are each connected via a connecting hose to a separate glue pump (not shown). The supply of the spray nozzles with glue liquor is carried out in the same manner as in the gluing device according to FIG. 1a. The air required by the spray nozzles 81, 82 is provided from a general air supply.

Die Ausführungsform gemäß Fig. 2b unterscheidet sich wiederum von der gemäß Fig. 2a lediglich dadurch, dass die beleimten Fasern durch die pneumatische Transporteinrichtung 13 nach oben abgesaugt werden.The embodiment according to FIG. 2b again differs from that according to FIG. 2a only in that the glued fibers are sucked upwards by the pneumatic transport device 13.

Auch die Ausführungsformen gemäß Fig. 2 können im Schachtabschnitt 22 Leitbleche 42 gemäß Fig. 1 b aufweisen.The embodiments according to FIG. 2 may also have guide plates 42 in accordance with FIG. 1 b in the shaft section 22.

Fig. 3a zeigt eine Beleimungsvorrichtung, die in Bezug auf eine Längsachse eines Teilabschnitts der pneumatischen Transporteinrichtung 13 symmetrisch beschaffen ist. Zu beiden Seiten der Längsachse befindet sich jeweils eine Beleimungseinheit 86 bzw. 87, die vom Prinzip her der Beleimungsvorrichtung gemäß Fig. 2a entspricht. Die Beleimungsmittel sind in Fig. 3a nicht eingezeichnet. Gleiche Teile der beiden Beleimungseinheiten 86, 87 der Doppelbeleimungsvorrichtung sind jeweils mit gleichen Bezugszeichen bezeichnet. Neben einer besonders hohen Durchsatzleistung der Doppelbeleimungsvorrichtung besitzt diese den Vorteil, dass eine gute Nachmischung der Fasern durch die frontal aufeinander prallenden Faserströme 36 erfolgt, ohne dass Mischwerkzeuge verwendet werden. Auch für kleinere DurchsatzJeistungen kann die Doppelbeleimungsvorrichtung eingesetzt werden, um so die sehr nützliche Nachmischung zu erreichen.FIG. 3 a shows a gluing device which is symmetrical with respect to a longitudinal axis of a section of the pneumatic conveying device 13. On both sides of the longitudinal axis is in each case a Beleimungseinheit 86 and 87, which corresponds in principle to the gluing device according to FIG. 2a. The gluing means are not shown in FIG. 3a. Identical parts of the two gluing units 86, 87 of the double gluing device are each designated by the same reference numerals. In addition to a particularly high throughput of Doppelbeleimungsvorrichtung this has the advantage that a good mixing of the fibers through the frontally colliding fiber streams 36 takes place without mixing tools are used. Also for smaller throughput For example, the double gluing device can be used to achieve the very useful remixing.

Auch bei der Doppelbeleimungsvorrichtung kann, wie in Fig. 3b gezeigt ist, vorgesehen sein, dass die beleimten Fasern nach oben durch die pneumatische Transporteinrichtung 13 abgesaugt werden.Also in the double gluing device, as shown in FIG. 3b, it may be provided that the glued fibers are sucked upwards by the pneumatic transport device 13.

In Fig. 4a ist eine Beleimungsvorrichtung dargestellt, die nach dem Prinzip der Beleimungsvorrichtung gemäß Fig. 2a arbeitet, wobei wiederum die speziellen Beleimungsmittel nicht dargestellt sind. Zusätzlich zu den bereits beschriebenen Beleimungsvorrichtungen weist die Beleimungsvorrichtung gemäß Fig. 4a eine Fasersichtereinheit 90 auf.In Fig. 4a, a gluing device is shown, which operates on the principle of gluing device according to Fig. 2a, again with the special gluing means are not shown. In addition to the gluing devices already described, the gluing device according to FIG. 4 a has a fiber-sighting unit 90.

Bei der Beleimungsvorrichtung gemäß Fig. 4a mündet die Austrittsöffnung 23 des Schachtabschnitts 22 in die Absaughaube 39 der pneumatischen Transporteinrichtung 13. Gegenüber von der Austrittsöffnung 23 ist ein Einlass 91 eines Grobgutaustragsschachts 92 angeordnet. Der Grobgutaustragsschacht 92 erstreckt sich in vertikaler Richtung und weist an seinem unteren Ende einen Grobgutaustrag 93 auf. Oberhalb des Grobgutaustrags 93 sind Luftzuführungsöffnungen 94 angeordnet. Über den Querschnitt des Grobgutaustragsschachts 92 sind Luftregulierungsklappen 95 angebracht. Benachbart zu dem Einlass 91 sind Verstellklappen 96 und 97 angeordnet.4a, the outlet opening 23 of the shaft section 22 opens into the suction hood 39 of the pneumatic conveying device 13. Opposite the outlet opening 23, an inlet 91 of a coarse material discharge shaft 92 is arranged. The coarse material discharge chute 92 extends in the vertical direction and has a coarse material discharge 93 at its lower end. Above the coarse material discharge 93, air supply openings 94 are arranged. Over the cross section of the coarse material discharge chute 92 air regulating flaps 95 are attached. Adjacent to the inlet 91 are adjusting flaps 96 and 97 are arranged.

Der Fasersichtereinheit 90 liegt folgende Funktionsweise zugrunde: Die aus der Austrittsöffnung 23 austretenden Fasern des Faserstroms 36 gelangen in die Absaughaube 39 der pneumatischen Transporteinrichtung 13. Leichtes Normalgut 98, also durchschnittlich schwere einzelne Fasern, beschreiben aufgrund ihrer relativ geringen kinetischen Energie nach dem Austritt aus dem Schachtabschnitt 22 ansatzweise eine kurze Wurfparabel, um dann von dem in der pneumatischen Transporteinrichtung 13 abwärts gerichteten durch den Pfeil 38 angedeuteten Transport-Luftstrom mitgenommen zu werden.The Fasersichtereinheit 90 is based on the following operation: The emerging from the outlet opening 23 fibers of the fiber stream 36 reach the suction hood 39 of the pneumatic transport device 13. Light Normal 98, so average heavy individual fibers describe, due to their relatively low kinetic energy after exiting the Chute section 22 approach a short throw parabola, to then be taken by the direction in the pneumatic transport device 13 downwards indicated by the arrow 38 transport air flow.

Grobgut 99, welches schwerer als das Normalgut 98 ist, beschreibt durch die höhere kinetische Energie eine längere Wurfparabel und gelangt dadurch in den Grobgutaustragsschacht 92. Durch eine in dem Grobgutaustragsschacht 92 herrschende geringe Luftströmung werden Faserteilchen, die im Grenzbereich zwischen leicht und schwer liegen, aus dem Grobgutaustragsschacht 92 in den Luftstrom der pneumatischen Transporteinrichtung 13 zurückgehoben. Schwerteile des Grobgutes fallen hingegen in den Grobgutaustrag 93. Die Verstellklappe 96 ist in ihrer Höhe und ihrem Winkel verstellbar und dient zur Einstellung der Geschwindigkeit und der Richtung der abwärtsgerichteten Luftströmung in der Absaughaube 39. Auf diese Weise kann Einfluss genommen werden auf die Wurfparabel des Faserstroms 36 nach dem Austritt aus dem Schachtabschnitt 22. Die Luftgeschwindigkeit im Grobgutaustragungsschacht 92 wird erstens über die Stärke des in der Fasersichtereinheit 90 herrschenden Unterdrucks, der wiederum durch die Luftdrossel 35 im oberen Kanalabschnitt 40 der pneumatischen Transporteinrichtung 13 einstellbar ist, und zweitens über die Luftregulierungsklappen 95 bestimmt. Über die in ihrer Höhe veränder bare Verstellklappe 97 kann der Öffnungsquerschnitt des Einlasses 91 eingestellt werden.Grobgut 99, which is heavier than the normal material 98, describes by the higher kinetic energy a longer throw parabola and thus enters The coarse material discharge chute 92. By means of a small air flow prevailing in the coarse material discharge chute 92, fiber particles which lie in the boundary region between light and heavy are lifted from the coarse material discharge chute 92 into the air flow of the pneumatic transport device 13. Heavy parts of the coarse material, however, fall into the coarse material discharge 93. The adjustment flap 96 is adjustable in height and angle and serves to adjust the speed and the direction of the downward air flow in the suction hood 39. In this way, influence can be made on the parafoil of the fiber flow 36 after emerging from the chute section 22. The air velocity in the coarse material discharge chute 92 is firstly determined by the amount of negative pressure prevailing in the fiber separator unit 90, which in turn is adjustable by the air throttle 35 in the upper channel section 40 of the pneumatic transport device 13, and secondly by the air regulation flaps 95 certainly. About the variable in height adjustable flap 97, the opening cross-section of the inlet 91 can be adjusted.

Vorteilhaft erweist sich bei dieser Beleimungsvorrichtung, dass Beleimung und Sichtung der Fasern in ein und derselben Vorrichtung erfolgen.It is advantageous in this gluing device that gluing and sifting of the fibers take place in one and the same device.

Auch bei dieser Beleimungsvorrichtung ist es möglich, die Fasern nach oben durch die pneumatische Transporteinrichtung 13 abzusaugen (Fig. 4b). Dabei wird leichtes Normalgut 98 aufgrund seiner relativ geringen kinetischen Energie nach dem Austritt aus dem Schachtabschnitt 22 durch die Saugkraft des Ventilators 12 abgesaugt, während das Grobgut 99 eine Wurfparabel beschreibt und in den Grobgutaustragsschacht 92 gelangt.With this glueing device it is also possible to suck the fibers upwards through the pneumatic transport device 13 (FIG. 4b). In this case, light normal material 98 is sucked off due to its relatively low kinetic energy after exiting the shaft section 22 by the suction force of the fan 12, while the coarse material 99 describes a throw parabola and enters the Grobgutaustragsschacht 92.

In Fig. 5a bzw. 5c ist eine Beleimungsvorrichtung dargestellt, die sich im Wesentlichen aus einer Beleimungsvorrichtung gemäß Fig. 1a und einer Beleimungsvorrichtung gemäß Fig. 4a zusammensetzt und somit eine erste Teileinheit 113 und eine zweite Teileinheit 114 aufweist. Die Beleimungsvorrichtung dient zur Beleimung von getrockneten Fasern in zwei Stufen. Sie weist einen Fasertrockner 115 auf, wobei ein Rohr 116, in dem die Fasern getrocknet werden nur teilweise dargestellt ist. Das Rohr 116 mündet in einen Zyklon 117, dessen Austrag 1 mit der Faser-Querverteilungseinrichtung 2 verbunden ist. Über einen Auslass 118 werden aus dem Zyklon 117 Abluft und Wasserdampf abgeführt.FIGS. 5a and 5c show a gluing device which essentially comprises a gluing device according to FIG. 1a and a gluing device according to FIG. 4a and thus has a first subunit 113 and a second subunit 114. The gluing device is used for gluing dried fibers in two stages. It has a fiber dryer 115, wherein a tube 116 in which the fibers are dried is only partially shown. The tube 116 opens into a cyclone 117, whose discharge 1 is connected to the fiber transverse distribution device 2. Via an outlet 118 exhaust air and water vapor are removed from the cyclone 117.

Der Ventilator 12 der pneumatischen Transporteinrichtung 13 ist ausgangsseitig mit einer Transportleitung 119 verbunden, die in einen zweiten Zyklon 120 mündet, der Bestandteil der zweiten Teileinheit 114 ist. Der Austrag 1 des Zyklons 120 ist wiederum mit der Faser-Querverteilungseinrichtung 2 verbunden, die in den Dosierbunker 3 der zweiten Teileinheit 114 mündet. Der Ventilator 12 der zweiten Teileinheit 114 ist ausgangsseitig mit einer Transportleitung 121 verbunden, die zu einer nicht gezeigten Formmaschine führt. Von der Formmaschine wird, wie durch den Pfeil 38 der zweiten Teileinheit 114 angedeutet, über eine Leitung 122 Rückluft in die pneumatische Transporteinrichtung 13 der zweiten Teileinheit 114 geführt. Über eine weitere Luftleitung 123 wird Rückluft von dem Zyklon 120 in die pneumatische Transporteinrichtung 13 der ersten Teileinheit 113 geführt. Hierbei handelt es sich um 70 % der aus dem Zyklon 120 abgeführten Luft, die restlichen 30 % der Luft des Zyklons 120 werden durch einen Auslass 124 des Zyklons 120 als Abluft abgeführt. Da der Ventilator 12 der ersten Teileinheit 113 zu 100 % Transportluft für die Fasern erzeugt, wird Ausgleichluft zu einem Anteil von 30 % durch die Luftzuführung 11 der ersten Teileinheit 113 aufgrund des vorhandenen Unterdrucks angesaugt. Entsprechendes gilt für die zweite Teileinheit 114, bei der 70 % Rückluft von der Formmaschine in die pneumatische Transporteinrichtung 13 geführt werden und 30 % Ausgleichluft durch die Luftzuführung aufgrund des Unterdrucks in der Teileinheit 114 angesaugt werden.The fan 12 of the pneumatic transport device 13 is connected on the output side to a transport line 119, which opens into a second cyclone 120, which is part of the second subunit 114. The discharge 1 of the cyclone 120 is in turn connected to the fiber transverse distribution device 2, which opens into the metering bunker 3 of the second subunit 114. The fan 12 of the second subunit 114 is connected on the output side to a transport line 121, which leads to a molding machine, not shown. From the molding machine, as indicated by the arrow 38 of the second subunit 114, via a line 122, return air is fed into the pneumatic transport device 13 of the second subunit 114. Via a further air line 123, return air is guided by the cyclone 120 into the pneumatic transport device 13 of the first subunit 113. This is 70% of the air discharged from the cyclone 120, the remaining 30% of the air of the cyclone 120 are discharged through an outlet 124 of the cyclone 120 as exhaust air. Since the fan 12 of the first subunit 113 generates 100% transport air for the fibers, compensation air is sucked in to a proportion of 30% through the air feed 11 of the first subunit 113 due to the existing negative pressure. The same applies to the second subunit 114, in which 70% return air from the molding machine in the pneumatic conveyor 13 are performed and 30% balance air are sucked through the air supply due to the negative pressure in the subunit 114.

Die Beleimungsvorrichtung gemäß Fig. 5a ist so ausgelegt, dass bei einem erwünschten Festharzanteil von 10 % bezogen auf atro Fasern 5 % Festharz der durch die erste Teileinheit 113 gegebenen ersten Beleimungsstufe zugeteilt werden. Von der ersten Teileinheit 113 werden die Fasern über die Transportleitung 119 in den Zyklon 120 transportiert und gelangen anschließend in den Dosierbunker 3 der zweiten Teileinheit 114, der wie bei der Beleimungsvorrichtung gemäß Fig. 4a erforderlich ist, um die Fasern für die vorgesehene proportionale Beimischung von Leim dosieren zu können. Die weiteren Merkmale der zweiten Teileinheit 114 sind die gleichen wie bei der Vorrichtung gemäß Fig. 4a. Der durch die zweite Teileinheit 114 gegebenen Beleimungsstufe sind weitere 5 % Festharz zugeteilt.The gluing device according to FIG. 5 a is designed such that, given a desired solid resin content of 10%, based on atro fibers, 5% solid resin is assigned to the first gluing step given by the first subunit 113. From the first subunit 113, the fibers are transported via the transport line 119 into the cyclone 120 and then arrive in the dosing hopper 3 of the second subunit 114, which is required as in the gluing device according to FIG. 4a, to the fibers for the intended proportional admixture of To be able to dose glue. The other features the second subunit 114 are the same as in the device of FIG. 4a. The gluing step given by the second subunit 114 is allocated a further 5% of solid resin.

Mit dieser stufenweisen Beleimung sind die o.g. Vorteile verbunden. Diese zweistufige Beleimung ist im Vergleich zu der einstufigen Beleimung mit einer der Beleimungsvorrichtungen gemäß der Fig. 1 bis 3 nur mit relativ geringem Mehraufwand verbunden, da eine Sichtung der beleimten Fasern stets erforderlich ist.With this gradual gluing the o.g. Benefits connected. This two-stage gluing is compared to the single-stage gluing with one of the gluing devices according to FIGS. 1 to 3 associated with relatively little overhead, since a sifting of the glued fibers is always required.

Auch bei der Beleimungsvorrichtung gemäß Fig. 5a kann vorgesehen sein, dass die beleimten Fasern in den Teileinheiten 113 und 114 jeweils nach oben abgesaugt werden. Eine solche Vorrichtung ist in Fig. 5b bzw. 5d dargestellt.It can also be provided in the case of the gluing device according to FIG. 5 a that the glued fibers in the subunits 113 and 114 are in each case suctioned off at the top. Such a device is shown in Fig. 5b and 5d.

Claims (13)

  1. Process of gluing dried fibres which are designated for the production of fibreboards, wherein
    (a) the fibres (4) are supplied to a fibre roller (17) by a metering device (3) through a feed chute (10), which fibre roller is provided on its surface with a plurality of pins (18) and rotates in such a manner
    (b) that the fibres (14) are deflected by the pins (18), are directed along a chute section (22) which is defined by a partial section (20) of the periphery of the fibre roller (17) and an opposite-lying wall (21) and said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins,
    (c) the fibres (36) exit substantially in a horizontal movement direction at an outlet orifice (23) of the chute section (22),
    (d) the fibres (83) are drawn off by suction in a downward or upward direction and are thereby deflected, and
    (e) the fibres (83) are glued in the deflection region by means of at least one spray nozzle (81, 82) which expels glue and air.
  2. Process according to claim 1, characterized in that in step (b) the centrifugal force causes the fibres (36) to lie against the wall (21), without yet coming into contact with pins (18) and in the course of the wall (21) the fibres (36) are brought once again into contact with the pins (18) by means of a metal baffle plate (42) which is inclined in a ramp-like manner in the direction of the pins (18) and the fibres then lie against the wall (21) by reason of the centrifugal force.
  3. Process according to claim 1 or 2, characterized in that the fibres (83) are deflected into a duct (39) of a pneumatic conveying device (13) and two rows of opposite-lying spray nozzles (81, 82) are provided, between which the fibres (83) are deflected.
  4. Process according to any one of the preceding claims, characterized in that the speed, at which the fibres (14) impinge upon the fibre roller (17), can be determined by adjusting the negative pressure prevailing in the feed chute (10).
  5. Process of gluing dried fibres (4) which are designated for the production of fibreboards, characterized in that two symmetrically arranged, opposite-lying fibre flows (36) are provided, in which the fibres are glued in the same manner according to any one of the preceding processes and the fibre flows (36) collide with each other after exiting the outlet orifice (23) of the chute section (22).
  6. Process according to any one of the preceding claims, characterized in that a sifting of the fibres (98, 99) immediately follows the gluing of the fibres (36).
  7. Process according to any one of claims 1 to 5, characterized in that a process according to claim 6 follows.
  8. Device for gluing dried fibres (4) which are designated for the production of fibreboards, wherein below an outlet (6) of a fibre-metering device (3) a feed chute (10) which can be subjected to negative pressure extends from the outlet (6) to a fibre roller (17) which comprises on its surface a plurality of pins (18) and can be rotated in such a manner
    that fibres (14) impinging upon the fibre roller (17) are deflected by means of the pins (18),
    are directed along a chute section (22) which is defined by a partial section of the periphery of the fibre roller (17) and an opposite-lying wall (21) and which extends from an outlet orifice (16) of the feed chute (10) in the rotational direction (19) of the fibre roller (17) and is provided with an outlet orifice (23),
    and said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins,
    wherein the fibres (36) are expelled through the outlet orifice (23) substantially in a horizontal movement direction,
    wherein disposed adjacent to the outlet orifice (23) of the chute section (22) is an inlet orifice of a pneumatic conveying device (13), into which the fibres (83) are deflected in a downward or upward direction, and
    wherein in the deflection region spray nozzles (81, 82) are disposed which are provided for gluing the fibres (83) by expelling glue and air.
  9. Device according to claim 8, characterized in that by reason of the centrifugal force in the chute section (22) the fibres (36) lie against the wall (21), without yet coming into contact with the pins (18), and on the wall (21) there is disposed at least one metal baffle plate (42) which is inclined in a ramp-like manner, such that the fibres (36) come into contact once again with the pins (18) and then lie against the wall (21) by reason of the centrifugal force.
  10. Device according to any one of claims 8 or 9, characterized in that two opposite-lying rows of spray nozzles (81, 82) are disposed at the inlet orifice of the pneumatic conveying device (13).
  11. Device according to any one of claims 8 to 10, characterized in that it comprises means for two symmetrically arranged, opposite-lying flows (36) of fibres which are to be glued, wherein the fibre flows (36) collide with each other after exiting the outlet orifice (23) of the chute section (22).
  12. Device according to any one of claims 8 to 11, characterized in that it comprises means for sifting the glued fibres.
  13. Device according to any one of claims 8 to 11, characterized in that a device (114) according to claim 12 is connected to it downstream.
EP01962928A 2000-08-11 2001-08-09 Method and device for gluing dried fibres used for producing fibre plates Expired - Lifetime EP1307325B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE2000139226 DE10039226C1 (en) 2000-08-11 2000-08-11 Method, to bond dry fibres to manufacture fibre board, involves supply fibres through supply shaft and guiding fibres and glues along shaft section formed by fibre roller and wall by pins on roller
DE10039226 2000-08-11
DE10061072 2000-12-08
DE2000161072 DE10061072A1 (en) 2000-12-08 2000-12-08 To coat dry fibers with glue, for the production of fiberboards, they are carried through a shaft against the shaft wall by the centrifugal action from a rotating roller with surface pins, to be sprayed and ejected from the shaft outlet
PCT/EP2001/009212 WO2002014038A1 (en) 2000-08-11 2001-08-09 Method and device for gluing dried fibres used for producing fibre plates

Publications (2)

Publication Number Publication Date
EP1307325A1 EP1307325A1 (en) 2003-05-07
EP1307325B1 true EP1307325B1 (en) 2006-05-03

Family

ID=26006667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01962928A Expired - Lifetime EP1307325B1 (en) 2000-08-11 2001-08-09 Method and device for gluing dried fibres used for producing fibre plates

Country Status (12)

Country Link
US (2) US7094309B2 (en)
EP (1) EP1307325B1 (en)
CN (1) CN100377854C (en)
AT (1) ATE324967T1 (en)
AU (2) AU2001284000C1 (en)
BR (1) BR0113097B1 (en)
CA (1) CA2453120C (en)
DE (1) DE50109709D1 (en)
ES (1) ES2262673T3 (en)
NZ (1) NZ524304A (en)
PT (1) PT1307325E (en)
WO (1) WO2002014038A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0113097B1 (en) * 2000-08-11 2012-06-12 dry fiber sizing process and dry fiber sizing device which are designed for the production of fiber panels.
DE10226820B3 (en) * 2002-06-15 2004-04-01 Flakeboard Company Limited, St.Stephen Method and device for gluing dried fibers intended for the production of fiberboard
DE102004054162B3 (en) 2004-11-10 2006-05-04 Flakeboard Company Limited, St.Stephen Method and device for preventing contamination of a transport device due to freshly glued fibers
DE102005032220A1 (en) * 2005-07-09 2007-01-11 Glunz Ag Process for the production of moldings, in particular slabs, from wood fibers and apparatus for carrying out this process
DE102006040044B3 (en) * 2006-04-18 2007-06-06 Flakeboard Co. Ltd. Fiber coating method for manufacturing e.g. high density fiber-board, involves transporting fibers from dosing device by transporting device so that fibers come out from outlets in separated partial flows that are merged to fiber flow
US20100311638A1 (en) * 2006-10-27 2010-12-09 Paul Tiege Method for Altering the Shape of Polymer Particles
DE102006058627B3 (en) * 2006-12-13 2008-06-05 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Fibers coating system for production of fiberboards i.e. medium density fiberboard plates, has suction boxes formed as cleaning boxes with cleaning device for removing fibers, which are penetrated from transport and into boxes
CN101998896B (en) * 2008-04-07 2014-12-10 瓦林格创新股份有限公司 Fibre based panels with a wear resistance surface
US8360348B2 (en) * 2010-08-12 2013-01-29 Frank Levy Method and apparatus for recycling carpet
US8870104B2 (en) 2011-01-13 2014-10-28 Frank Levy Method for separating carpet fibers
DE102011008757A1 (en) * 2011-01-17 2012-07-19 Dieffenbacher GmbH Maschinen- und Anlagenbau Method and apparatus for prospecting for contaminants from a pneumatic fiber stream
US9643800B2 (en) * 2013-02-23 2017-05-09 Phillip Douglas Horizontal support system
US20150107749A1 (en) * 2013-10-18 2015-04-23 Unilin, Bvba Process and Device for Gluing Dried Fibers Designated for the Production of Fiberboards
CN103706508B (en) * 2013-11-25 2016-06-08 北京航空航天大学 A kind of matrix material gluing adjustment mechanism
DE102015201464B4 (en) * 2015-01-28 2016-10-20 Brav-O-Tech Gmbh Device and method for gluing particles
DE102016010539B3 (en) 2016-05-28 2017-05-04 Fritz Schneider Method and device for gluing dried fibers provided for the production of fibreboards
DE102016006499B3 (en) * 2016-05-28 2017-12-28 Fritz Schneider Process and apparatus for drying glue-wetted fibers for making fiberboard
CN105966042B (en) * 2016-06-12 2019-03-19 杭州盛得新材料有限公司 Quantitative point type fabric bonder
CN111645344A (en) * 2018-03-29 2020-09-11 杨康君 Humidification device is used in automatic processing of PVC membrane
DE102018112166A1 (en) * 2018-05-22 2019-11-28 Dieffenbacher GmbH Maschinen- und Anlagenbau Apparatus and method for scattering a web on a forming belt
CN115157483A (en) * 2022-07-19 2022-10-11 烟台道成化学有限公司 High-efficient filter equipment is used to polyurethane resin

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741191A (en) * 1951-01-09 1956-04-10 Fahrni Fred Operating mechanisms for spreading machines
DE1078759B (en) * 1955-08-18 1960-03-31 Max Himmelheber Dipl Ing Process for the production of surface-treated chipboard panels
US4322380A (en) * 1979-01-19 1982-03-30 Morrison-Knudsen Forest Products Company, Inc. Method for feeding and orienting fibrous furnish
SU1043021A1 (en) 1982-04-19 1983-09-23 Филиал N 1 Специализированного Проектно-Конструкторского Технологического Бюро Всесоюзного Научно-Производственного Объединения "Союзнаучплитпром" Apparatus for blending wooden particles with binder
ES2016593B3 (en) * 1987-05-25 1990-11-16 Schenck Ag Carl PROCEDURE FOR THE PRODUCTION OF A FIBER VEIL
JP2501513B2 (en) * 1992-07-03 1996-05-29 株式会社アスク Bamboo fiber manufacturing method
US5375780A (en) * 1993-05-24 1994-12-27 Courtaulds Fibres (Holdings) Ltd. Comminuting wood pulp sheeting
DE19506353A1 (en) 1995-02-23 1996-08-29 Schenck Ag Carl Method and device for wetting with a fluid
IT1274565B (en) 1995-05-24 1997-07-17 Cmp Spa GLUING MACHINE FOR PRODUCTION PLANTS OF WOOD FIBER PANELS, AND PLANT USING SUCH GLUING MACHINE
BR9907063A (en) 1998-08-05 2000-10-17 Fraunhofer Ges Forschung Process for the production of mdf boards
DE10025177B4 (en) 2000-05-24 2004-04-15 Flakeboard Company Limited, St.Stephen Method and device for resolving irregularities in wood fiber streams
BR0113097B1 (en) * 2000-08-11 2012-06-12 dry fiber sizing process and dry fiber sizing device which are designed for the production of fiber panels.

Also Published As

Publication number Publication date
CN1446143A (en) 2003-10-01
US20070001350A1 (en) 2007-01-04
CN100377854C (en) 2008-04-02
US8007610B2 (en) 2011-08-30
BR0113097A (en) 2003-06-24
AU2001284000B2 (en) 2006-03-23
US7094309B2 (en) 2006-08-22
EP1307325A1 (en) 2003-05-07
CA2453120A1 (en) 2002-02-21
US20040026032A1 (en) 2004-02-12
ES2262673T3 (en) 2006-12-01
NZ524304A (en) 2006-08-31
ATE324967T1 (en) 2006-06-15
AU8400001A (en) 2002-02-25
DE50109709D1 (en) 2006-06-08
WO2002014038A1 (en) 2002-02-21
CA2453120C (en) 2010-06-08
AU2001284000C1 (en) 2006-09-14
AU2001284000B8 (en) 2006-03-30
BR0113097B1 (en) 2012-06-12
PT1307325E (en) 2006-07-31

Similar Documents

Publication Publication Date Title
EP1307325B1 (en) Method and device for gluing dried fibres used for producing fibre plates
EP2018254B1 (en) Process and device for applying glue to dried fibers used in the manufacture of fiber panels
DE10247412C5 (en) Plant for gluing fibers for the production of fiberboards, in particular MDF boards and the like wood-based panels
EP1017550B1 (en) Method for coating fibers with glue
DE10247413B4 (en) Plant for gluing fibers for the production of fiberboard, in particular MDF boards or the like wood-based panels
EP2476526B1 (en) Method and apparatus for the manufacture of a fibre- or chipbord
EP1809454B1 (en) Method and device for prevention of contamination of a transport device by freshly-sized fibres
DE1802161A1 (en) Method and device for classifying and dispensing material
EP1283766B1 (en) Method and device for disintegrating irregularities in streams of wood fibres
DE102016010539B3 (en) Method and device for gluing dried fibers provided for the production of fibreboards
DE10226820B3 (en) Method and device for gluing dried fibers intended for the production of fiberboard
EP1442855B1 (en) Device for distributing granular material onto a continously travelling support
DE10156070B4 (en) Method and device for dissolving irregularities in wood fiber streams
WO2005035213A1 (en) High-pressure gluing in a fiber mixer
DE10061072A1 (en) To coat dry fibers with glue, for the production of fiberboards, they are carried through a shaft against the shaft wall by the centrifugal action from a rotating roller with surface pins, to be sprayed and ejected from the shaft outlet
DE10039226C1 (en) Method, to bond dry fibres to manufacture fibre board, involves supply fibres through supply shaft and guiding fibres and glues along shaft section formed by fibre roller and wall by pins on roller
DE3309743C2 (en)
DE102016006499B3 (en) Process and apparatus for drying glue-wetted fibers for making fiberboard
DE10304134A1 (en) Device for spreading spreading material on a continuously moving surface
DE102019204880A1 (en) Device for wetting particles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030212

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17Q First examination report despatched

Effective date: 20050610

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060503

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060503

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 50109709

Country of ref document: DE

Date of ref document: 20060608

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: A. BRAUN, BRAUN, HERITIER, ESCHMANN AG PATENTANWAE

Ref country code: PT

Ref legal event code: SC4A

Effective date: 20060607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060803

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060831

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060831

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20060817

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2262673

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070206

BERE Be: lapsed

Owner name: FLAKEBOARD COMPANY LIMITED

Effective date: 20060831

Owner name: SCHNEIDER, FRITZ

Effective date: 20060831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060804

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: FLAKEBOARD COMPANY LIMITED

Free format text: FLAKEBOARD COMPANY LIMITED#151 CHURCH STREET#ST. STEPHEN, NB, E3L 3A6 (CA) $ SCHNEIDER, FRITZ#HOHENZOLLERNSTRASSE 56#47799 KREFELD (DE) -TRANSFER TO- FLAKEBOARD COMPANY LIMITED#151 CHURCH STREET#ST. STEPHEN, NB, E3L 3A6 (CA) $ SCHNEIDER, FRITZ#HOHENZOLLERNSTRASSE 56#47799 KREFELD (DE)

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060503

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060809

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060503

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

Ref country code: CH

Ref legal event code: PUE

Owner name: DIEFFENBACHER GMBH MASCHINEN- UND ANLAGENBAU

Free format text: DIEFFENBACHER GMBH + CO. KG#HEILBRONNER STRASSE 20#75031 EPPINGEN (DE) -TRANSFER TO- DIEFFENBACHER GMBH MASCHINEN- UND ANLAGENBAU#HEILBRONNER STRASSE 20#75031 EPPINGEN (DE)

Ref country code: CH

Ref legal event code: PUE

Owner name: DIEFFENBACHER GMBH + CO. KG

Free format text: FLAKEBOARD COMPANY LIMITED#151 CHURCH STREET#ST. STEPHEN, NB, E3L 3A6 (CA) $ SCHNEIDER, FRITZ#HOHENZOLLERNSTRASSE 56#47799 KREFELD (DE) -TRANSFER TO- DIEFFENBACHER GMBH + CO. KG#HEILBRONNER STRASSE 20#75031 EPPINGEN (DE)

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20111020 AND 20111025

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50109709

Country of ref document: DE

Representative=s name: HARTDEGEN, ANTON, DIPL.-ING.(FH), DE

Effective date: 20111110

Ref country code: DE

Ref legal event code: R081

Ref document number: 50109709

Country of ref document: DE

Owner name: DIEFFENBACHER GMBH MASCHINEN- UND ANLAGENBAU, DE

Free format text: FORMER OWNER: FLAKEBOARD COMPANY LIMITED,FRITZ SCHNEIDER, , CA

Effective date: 20111110

Ref country code: DE

Ref legal event code: R081

Ref document number: 50109709

Country of ref document: DE

Owner name: DIEFFENBACHER GMBH MASCHINEN- UND ANLAGENBAU, DE

Free format text: FORMER OWNERS: FLAKEBOARD COMPANY LIMITED, ST.STEPHEN, NB, CA; SCHNEIDER, FRITZ, 47799 KREFELD, DE

Effective date: 20111110

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: DIEFFENBACHER GMBH MASCHINEN-UND ANLAGENBAU, DE

Effective date: 20120104

REG Reference to a national code

Ref country code: PT

Ref legal event code: PC4A

Owner name: DIEFFENBACHER GMBH + CO. KG, DE

Effective date: 20120824

REG Reference to a national code

Ref country code: PT

Ref legal event code: PC4A

Owner name: DIEFFENBACHER GMBH MASCHINEN- UND ANLAGENBAU, DE

Effective date: 20120828

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: DIEFFENBACHER GMBH MASCHINEN-UND ANLAGENBAU

Effective date: 20130917

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20140806

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20140807

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20150923

Year of fee payment: 15

Ref country code: CH

Payment date: 20150825

Year of fee payment: 15

Ref country code: PT

Payment date: 20150730

Year of fee payment: 15

Ref country code: GB

Payment date: 20150901

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150831

Year of fee payment: 15

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 324967

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150809

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150809

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150809

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160809

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160831

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160831

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160809

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20170825

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20170828

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20171030

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160810

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20180625

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50109709

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180810

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180809

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190301