EP1283766A1 - Verfahren und vorrichtung zur auflösung von ungleichmä igkeiten in holzfaserströmen - Google Patents
Verfahren und vorrichtung zur auflösung von ungleichmä igkeiten in holzfaserströmenInfo
- Publication number
- EP1283766A1 EP1283766A1 EP01945161A EP01945161A EP1283766A1 EP 1283766 A1 EP1283766 A1 EP 1283766A1 EP 01945161 A EP01945161 A EP 01945161A EP 01945161 A EP01945161 A EP 01945161A EP 1283766 A1 EP1283766 A1 EP 1283766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- opening
- roller
- outlet opening
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
Definitions
- the invention relates to methods and devices for resolving non-uniformities in a stream of wood fibers discharged from a metering device provided for the production of fiberboard.
- the consumption of glue is relatively high because part of the reactivity of the glue is lost during the drying process of the fibers due to the high temperatures.
- the emission of formaldehyde resulting from the glue is considerable, which means that it is necessary to minimize pollutants.
- Rollers which can serve to resolve irregularities in a fiber stream are known per se from DE 38 18 117 A1, DE 44 39 653 A1 and WO 99/11441. However, the effectiveness of these rollers in resolving non-uniformities is limited.
- EP 0 800 901 A1 describes a device for producing a nonwoven from, in particular, chips, in which rollers are provided which, in conjunction with a downstream air classifier, serve to separate the chips depending on their size in order to provide a size distribution over the thickness of the nonwoven achieve.
- rollers In the case of grit in the form of fibers, such rolls cannot achieve a satisfactory dissolving effect.
- a separation of the fibers into different particle sizes is not at all desirable in fiber boards because of the desired homogeneity in the structure.
- the invention has for its object to provide a generic method that is very effective and inexpensive. Furthermore, the invention has for its object to provide a generic device with which such a method can be carried out.
- the fibers which can be dry-glued fibers in particular, are fed by the metering device, which in particular which can be a dosing hopper, fed through a feed shaft to an opening roller, which is provided with a large number of pins on its surface and rotates so that the fibers are deflected by the pins.
- the fibers are guided essentially along a shaft section delimited by a partial section of the circumference of the opening roller and an opposite wall, before they exit at an outlet opening of the shaft section.
- the fibers After exiting the outlet opening of the shaft section, the fibers arrive on a forming belt of a molding machine, in which the fibers are formed into a nonwoven.
- the forming belt is a wire belt through which the fibers are sucked in towards the surface of the forming belt.
- the opening roller rotates at high speed. Due to its shape, shaft depth and shaft length, the shaft section is preferably suitable for bringing the fiber flow to approximately the circumferential speed of the opening roller after an initial action of the pins on the fibers in the further course before reaching the outlet opening by the air flow generated in the shaft section, the Fibers lie against the wall of the shaft section.
- the dissolved fibers emerge from the shaft section in the form of a thin fiber stream, preferably pulled apart to form a millimeter-thin film, and then reach a scattering space, where they are built up with elements of the molding machine to form a litter mat or a fleece.
- the fibers after they hit the opening roller are already out of the effective range of the pins after a quarter of the roller circumference due to the radial force which acts on the fibers due to the rotation, and then contact the wall of the shaft section invest.
- the fibers are transported by the air stream, which is also rotated by the roller and moved to the outlet opening of the shaft section.
- the wall of the shaft section preferably has a smooth surface on its side opposite the opening roller. Fiber bundles and drops of condensed water are very effectively dissolved in the fiber stream by the deflection of the fiber stream or the contact with the rapidly rotating pins. Even the very hard lumps of glue are dissolved to a certain extent.
- a homogenized fiber stream therefore emerges through the shaft section, through which the fibers are scattered onto the forming belt.
- the waste of fiber boards is also considerably reduced and the technological properties of the end product, in particular the surface quality, are improved.
- the above-mentioned disadvantages of the glue-saving and low-emission dry gluing in the production of fiberboard can be eliminated or reduced with respect to the glue lumps with the method according to the invention.
- the method also serves in particular to scatter the fibers into a fleece on the forming belt of the molding machine.
- An exit direction of the fiber stream can be provided which is horizontal or is inclined somewhat upwards, that is to say in the direction of the metering device.
- the fibers When exiting the shaft section, the fibers can be passed through a profile with nail-like elevations, which is arranged across the width of the outlet opening.
- the profile with nail-like elevations is referred to as a comb strip.
- the comb strip causes a further resolution of irregularities in the fiber material and thus an increased degree of fineness of the fiber material in accordance with the respective structure of the comb strip. After passing through the comb bar, which represents the second stage of fiber dissolution, an even better homogenized fiber stream emerges from the shaft section.
- the nail-like elevations of the comb strip are preferably adjustable at an angle to the direction of flow of the fibers.
- the fibers are directed obliquely upwards in the direction of the pins of the opening roller. In this way, the fibers reach the area of action of the pins again and are therefore subjected to a further process for resolving non-uniformities.
- the fibers are braked when they hit the nail-like elevations, as a result of which, even when the comb strip is arranged vertically, swirling takes place, which can bring the fibers back into the effective range of the pins of the dissolving roller.
- the nail-like elevations can be arranged in several rows, also offset from one another.
- the weight distribution of the fibers can be adjusted over the width by means of a suction strength that can be adjusted over the width of the belt.
- the suction process also accelerates the fibers discharged from the metering device in addition to the gravitational force in the direction of the opening roller. This increases the effectiveness of the opening roller with regard to the resolution of irregularities in the fiber stream.
- the speed at which the fibers move in the feed shaft towards the opening roller can preferably be adjusted by changing the cross section of the feed shaft and the suction strength.
- an air flow generated by the suction process with a speed component directed parallel to the forming belt can be provided, which ensures that the fibers roll as little as possible when they hit the forming belt, ie assume the speed of the forming belt as quickly as possible.
- This can help to arrange the outlet opening of the shaft section in such a way that it ejects the fibers essentially parallel to the forming belt.
- the object is also achieved by the features of claim 8, the fibers being fed from the outlet opening of the shaft section to an air-fiber sifting.
- the fibers exit the chute section substantially horizontally and enter an upward air flow generated by negative pressure.
- the air flow entrains fibers that are isolated as desired and thus have a relatively low weight as particles, while impurities in the form of coarse material are fed to a coarse material discharge by the force of gravity.
- the coarse material can be directed vertically downwards to the coarse material discharge by means of an angle-adjustable flap.
- a downward airflow can be provided, which is directed against the direction of rotation of the opening roller.
- an adjustable deflector can be arranged so that the coarse material is rejected into the coarse material discharge shaft.
- Fibers which have an above-average weight and are not removed directly by the upward air flow are preferably lifted into the air flow in a post-sifter upstream of the coarse material discharge by an additional upward post-air flow generated by negative pressure.
- the action of the opening roller in addition to dissolving impurities, accelerates and thus pulls the fiber stream apart, thereby improving the sifting effect.
- the fiber stream is drawn apart into a thin film.
- heavy particles are mechanically pre-separated from the fiber stream before it reaches the air flow of the fiber sifting. The pre-separation takes place due to the different throwing parabolas of heavy and light particles.
- the heavy particles include in particular also lumps of glue and glue batches that were not broken up by the opening roller due to their great hardness.
- additives can also be supplied to the fibers in the feed shaft via nozzles.
- the opening roller then has not only the function of opening but also of mixing.
- the opening roller whose speed is preferably adjustable, rotates quickly, e.g. at about 300 to 2000 rpm. It preferably has a diameter of 500 to 600 mm and rotates at 300 to 2000 rpm.
- the fibers are first subjected to a dissolution and air-fiber screening according to claim 8 or 10 using a corresponding dissolving device according to the invention and then after a pneumatic transport according to claim 1 via a metering device for forming a fleece of another corresponding dissolving device according to the invention with integrated Forming machine are fed.
- the air-fiber screening in particular lumps of glue, glue batches and coarse wood particles (so-called "shiwes"), which arise during fiber production, are pulled out of the fiber stream.
- the outlet opening of the shaft section can be arranged in such a way that it ejects the fibers essentially horizontally and thus parallel to the forming belt and further in the direction of movement of the forming belt, and thereby residual heavy parts that have passed through the air-fiber sifting by a mechanical separation effect, which also the Opening roller of the opening Direction with integrated molding machine, are transported in the molding machine in the nonwoven structure in an upper layer of the nonwoven fabric.
- the upper layer of the nonwoven is preferably combed by a scalping roller connected downstream and fed via pneumatic transport to a process at the start of the air-fiber screening, preferably into a dosing hopper within the air-fiber screening. This means that partial rechecking takes place based on the first fiber sifting.
- a feed shaft extends from the discharge to an opening roller, which has a large number of pins on its surface and can be rotated in such a way that fibers striking the opening roller are deflected by the pins.
- a shaft section which is delimited by a partial section of the roller circumference and an opposite wall, extends from an outlet opening of the feed shaft in the direction of rotation of the opening roller.
- a shaping belt is arranged below the outlet opening of the shaft section, preferably at a distance of 200 to 500 mm, in particular of 220 to 280 mm.
- the forming belt is a sieve belt, under which vacuum boxes are arranged in order to suck in the fibers towards the surface of the forming belt, preferably for influencing the basis weight distribution with adjustable thickness.
- the device has essentially the same advantages as previously mentioned in connection with the method according to claim 1. Due to the rotary movement of the opening roller, the fibers are accelerated to a thin, preferably millimeter-thin, fiber stream which moves at high speed towards the outlet opening of the shaft section, the fiber stream being guided through the wall of the shaft section until it is ejected from the outlet opening.
- a comb strip with at least one row of nail-like elevations is preferably arranged at the outlet opening of the shaft section over the working width of the shaft section. The length of the nail-like elevations is selected such that the entire fiber stream must pass the comb strip before it emerges from the outlet opening of the shaft section. As described above, this causes the fiber material to dissolve further.
- the comb strip can be designed and arranged in such a way that, in addition to the fiber disintegration caused by the impact of the fibers on the nail-like elevations, the direction of the fiber stream is simultaneously changed. This change of direction takes place in such a way that the fibers, which have moved away from the area of action of the pins after a partial distance of the slot section due to the centrifugal force of the rotational movement, are returned to the area of action of the pins.
- a device which, with only a single rotating roller with attached pins and a shaft section with an integrated comb strip at its outlet opening, first dissolves the fiber material in at least two stages of different degrees of fineness, then finely and at the same time has the property in connection with the suction air of the vacuum boxes and the sieve belt to form a homogeneous fiber fleece with a constant basis weight.
- a supply opening for an air stream with a speed component directed parallel to the forming belt can be provided between the outlet opening of the shaft section and the forming belt. The small distance of the outlet opening of the shaft section from the forming belt and the air flow directed parallel to this prevent the fibers from hitting the forming belt at a relatively high speed.
- the vertical extent of the air flow supply opening can be changed over the width of the forming belt by several independently height-adjustable sheets in order to be able to set a certain air supply symmetry and in this way to be able to influence the laying height of the fibers across the width of the forming belt.
- a guide wall which adjoins the shaft section opposite the outlet opening of the feed shaft and can extend into a section running parallel to the forming belt, also results in a suction effect of the vacuum below the sieve belt on the fibers located in the feed shaft. It proves to be advantageous for the flow conditions if a nose directed towards the opening roller is formed at the transition point of a feed shaft wall to the guide wall, which nose only forms a narrow passage for the fibers on the section of the opening roller opposite the shaft section. Furthermore, the cross section of the feed chute can be changeable so as to be able to influence the speed of the fibers along the feed chute.
- a disintegration device with an integrated air-fiber sifter in which the above-described outlet opening of the shaft section is arranged in such a way that the fibers emerge essentially horizontally into an air channel which passes through
- Vacuum generated, upward or downward air flow leads, wherein a coarse material discharge shaft, which has an inlet opposite the outlet opening of the shaft section and a coarse material discharge arranged below the inlet, is connected to the air duct.
- the fiber flow is caused by the opening roller
- the speed of the opening roller is preferably adjustable. As a result, the speed at which the fibers are ejected from the shaft section can be varied, which influences the throwing parabola, in particular of the large parts which are to get into the coarse material shaft during the viewing process.
- an angle-adjustable flap can be arranged at the inlet of the coarse material discharge shaft in such a way that the coarse material is deflected into the coarse material discharge shaft.
- an adjustable deflector can be arranged in such a way that the coarse material is deflected into the coarse material discharge shaft.
- a comb strip is not provided for the opening devices with an integrated air-fiber sifter, since braking of the fiber stream caused by this is not desired.
- the coarse material discharge chute preferably has at least one air supply opening in a lower region, through which an upward air flow is generated by the negative pressure applied to the air duct for indulgence in fibers of above-average weight.
- the pins of the opening roller move away from the roller with increasing distance. taper the axis of rotation.
- the wall of the shaft section can in particular be formed by a hood which can be fed to the opening roller, so that the distance of the wall from the outer ends of the pins is variable. The distance is relatively small, so that the fiber stream starting from the outlet opening of the feed shaft in a first section of the
- Manhole section is kept in the effective area of the opening roller.
- the fiber stream emerges from the effective area of the dissolving pins due to the centrifugal force of the rotational movement in the shaft section and lies against the wall of the shaft section.
- electromagnets or permanent magnets for pulling metal parts out of the fiber stream can be installed in the feed shaft.
- a series of nozzles can be arranged in the feed chute, via which additives such as e.g. Water, superheated steam, accelerator or retarder are added.
- additives such as e.g. Water, superheated steam, accelerator or retarder are added.
- an opening device with an air fiber classifier and a opening device with a molding machine can be arranged one behind the other.
- FIG. 1 schematically shows a partial view of an opening device with an integrated molding machine
- 2a schematically shows a partial view of an opening device for mechanical pre-separation of heavy parts with an integrated air-fiber classifier with an upward air flow
- 2b schematically shows a partial view of an opening device for the mechanical pre-separation of heavy parts with an integrated air-fiber sifter with a downward air flow
- FIGS. 1 and 3 schematically shows a partial side view of the outlet opening 18 of the opening device according to FIGS. 1 and
- FIG. 4 schematically shows a partial view of the outlet opening according to FIG. 3 in a top view.
- FIGS. 2a and 2b could also be referred to as a molding machine with an integrated opening device and the opening devices according to FIGS. 2a and 2b as an air-fiber classifier with an integrated opening device.
- dosing hopper 1 which contains dry-glued wood fibers 2.
- feed rollers 3 which serve to distribute the fibers fed through a dosing bunker inlet (not shown) in the dosing bunker 1.
- the fibers 2 are discharged from the dosing hopper 1 by means of a dosing belt 4 and a row of discharge rollers 5 arranged on the front. At the same time 5 larger clumps of the fibers 2 are dissolved by the discharge rollers.
- the fibers 2 fall from the dosing hopper 1 as a fiber stream 6 into a feed shaft 7 which is delimited by two mold walls 8 and 9. At the upper end of the feed shaft 7 there is a first air feed opening 10. Furthermore, a row of nozzles 30 is arranged on the mold wall 9 across the width of the fiber stream 6, via which additives 31 can be sprayed onto the fibers of the fiber stream 6.
- the fiber stream 6 meets a disintegration roller 12, on the surface of which a large number of pins 13 are arranged, which become larger as the distance to the axis of rotation increases Taper opening roller 12 to a tip.
- the opening roller 12 has a diameter of 550 mm and rotates in the direction of rotation indicated by the arrow 14 at about 1000 rpm.
- the speed of the opening roller 12 can be regulated so that it can adapt to different materials to be opened.
- a total of approximately 6000 pins are arranged on the opening roller 12, which is designed for a process width of 1500 mm.
- the direction of movement of the hood is indicated by arrow 29.
- a comb strip 34 Arranged at the outlet opening 18 is a comb strip 34 which has conical teeth 53 which can be adjusted at an angle to the direction of flow of the fibers.
- the teeth 53 are arranged in two mutually offset rows, each over the working width of the shaft section 17, as can be seen in particular from FIGS. 3 and 4.
- the teeth 53 are oriented perpendicular to the direction of flow of the fibers in FIG. 1 and inclined in FIGS. 3 and 4 such that they form an angle of approximately 135 ° with the impinging fiber stream.
- a forming belt 19 designed as a sieve belt.
- a row of vacuum boxes 20 via which a negative pressure indicated by the arrow 27 is generated on the forming belt 19.
- a slide 32 is arranged on each vacuum box 20 for adjusting the amount of air extracted.
- a second air supply opening 21 Between the outlet opening 18 of the shaft section 17 and the forming belt 19 there is a second air supply opening 21.
- the vertical extension of the second air supply opening 21 is across the width of the forming band 19 by a plurality of independently height-adjustable sheets, one of which is shown in FIG. 1 and with which loading Switzerlands Schweizer 35 is provided for changing a certain air supply symmetry.
- the sheets 35 are not shown in FIGS. 3 and 4.
- a guide wall 22 adjoins the mold wall 8 of the feed chute 7 and approaches the mold belt 19 at a predetermined distance.
- a nose 23 is designed such that the passage between the mold wall 8 or the guide wall 22 and the opening roller 12 is the least.
- a scalping roller 24 is arranged above the forming belt 19.
- the direction of movement of the forming belt 19 is indicated by the arrow 25.
- the fiber stream 6 meets the opening roller 12 rotating at high speed at the outlet opening 11 of the feed shaft 7 and the pins 13 have a speed component that is perpendicular to the direction of movement of the fiber stream 6, cohesive or clumped fibers are separated from one another and clumps of glue and condensation water are dissolved , Individual fibers are hardly damaged by the opening roller 12.
- the shaft section 17 the fibers are initially held in the effective area of the opening roller 12 by the wall 16. Due to its shape, shaft depth and shaft length, the shaft section 17 is suitable for bringing the fiber flow to approximately the circumferential speed of the opening roller 12 in the further course before reaching the outlet opening by the air flow generated in the shaft section 17.
- the fibers are moved to the outlet opening 18, where they are braked by the conical teeth 53 and brought in the direction of the pins 13 and thus again into the effective range of the opening roller 12. Since after the braking of the fibers, the pins 13 move faster than that Fibers, the pins 13 again resolve non-uniformities in the fiber stream.
- the fibers Due to the arrangement of the outlet opening 18 at the lowest point of the opening roller 12 and the air directed through the second air supply opening 21 parallel to the forming belt 19, the fibers are brought onto the forming belt 19 without a rolling effect due to the fibers hitting the forming belt 19 too large a speed difference between the fibers and the forming belt 19 occurs.
- the outlet opening 18 of the shaft section 17 is arranged in such a way that, under the action of the air flow described below and indicated by arrow 28, the fibers reach the forming belt essentially with a movement component parallel to the latter.
- the laying height of the fibers can be influenced over the width of the forming belt 19.
- the air drawn in through the two air supply openings 10 and 21 can be conditioned and warmed in order to accelerate a later pressing process.
- Fibers 26 that have reached the forming belt 19 are sucked to the surface of the forming belt 19 by the vacuum generated below the forming belt 19.
- the nose 23 ensures that only a very small amount of fibers from the fiber stream 6 does not pass through the shaft section 17 but along the mold wall 8 and the guide wall 22 to the mold belt 19.
- the passage between the nose 23 and the opening roller 12 is large enough, however, as indicated by the arrow 28, to allow air concentrating on the mold wall 8 to pass from the feed shaft 7 to the mold belt 19. sen, whereby the fiber stream 6, in addition to the gravitational force, experiences a suction effect from the vacuum applied below the forming belt 19. In this way, the effectiveness of the opening roller 12 is increased.
- the mold walls 8 and 9 can also be slightly inclined, for example by 15 °.
- the scalping roller 24 ensures that a nonwoven fabric formed on the forming belt 19 by the fibers 26 is kept constant in a predetermined nonwoven weight, so that a fiberboard with a weight that is as uniform as possible is obtained in the pressing process that follows the shaping. Further tasks of the scalping roller 24 are the production of a flat nonwoven surface and, as already mentioned, the combing of the top layer of the nonwoven which may still have residual impurities.
- the opening device according to FIG. 2a also has a dosing hopper 1 with wood fibers (not shown).
- the wood fibers have been fed to the dosing hopper 1 either from a dryer (not shown) via a first inlet opening 36 or as return material from a scaling roller (not shown) and a side trimming (not shown) of a molding machine via a second inlet opening 37.
- the fibers are in turn fed as a fiber stream 6 into a feed shaft 7 which is delimited by two mold walls 8 and 9 and at the upper end of which there is a first air feed opening 10.
- An outlet opening 18 of a shaft section 17 opens into an air duct 38 of the fiber sifter.
- the air duct 38 has a lower duct section 39 and an upper duct section 40.
- Via the lower channel section 39 is used to generate an air flow indicated by the arrows 51 and 52 Air supplied, the amount of which can be regulated via an air supply slide 41.
- an adjustment flap 42 is also arranged, which serves to adjust the direction of flow and at the same time the flow velocity of the supplied air.
- a negative pressure is generated via a fan, not shown.
- An inlet 43 of a coarse material discharge shaft 44 is arranged opposite the outlet opening 18 of the shaft section 17.
- the coarse material discharge shaft 44 extends in the vertical direction and has a coarse material discharge 45 at its lower end.
- Third air supply openings 46 are arranged above the coarse material discharge 45.
- Air regulating flaps 47 are attached over the cross section of the coarse material discharge shaft 44.
- a coarse material deflector 48 in the form of an adjustment flap is located behind the inlet 43.
- the opening device with integrated air fiber classifier is based on the following mode of operation.
- the fiber stream 6 which is metered in and guided by the opening roller 12 is accelerated by the opening roller 12 and thereby pulled apart. Contaminants are mostly dissolved or crushed.
- the fibers enter the air channel 38 as an expanded fiber stream. Due to their relatively low kinetic energy, light normal goods 49, that is to say heavy individual fibers, begin to describe a short throwing parabola after which they then move upward in the air channel 38 directed air flow 51, 52 to be taken.
- Coarse material 50 which is heavier than the normal material 49, describes a longer throwing parabola due to the higher kinetic energy and thus reaches the coarse material discharge shaft 44 after an impact on the coarse material deflector 48. Due to a small air flow prevailing in the coarse material discharge shaft 44, heavy parts of the coarse material 50 fall out of the air flow 51, 52 into the coarse material discharge 45 38 raised.
- the throughput of the air classifier can be about 300 g fibers / m 3 air with an air velocity of 20 m / sec in the classifier.
- the fibers discharged through the upper channel section 40 can be fed, for example, via a cyclone to an opening device with an integrated molding machine according to FIG. 1.
- the dissolving device according to FIG. 2b differs from the dissolving device according to FIG. 2a essentially by a downward directed air flow, which is indicated by the arrows 51a and 52a.
- the downward air flow flows on the side of the opening roller 12 opposite the shaft section 17 in a direction opposite to the direction of rotation of the opening roller 12.
- the upward air flow of the opening roller 12 according to FIG. 2a flows in a direction which corresponds to the direction of rotation of the opening roller 12.
- the flaps 42 and 48 of the opening device according to FIG. 2a are not realized in the opening device according to FIG. 2b.
- a height-adjustable coarse material deflector 48a is arranged in such a way that the coarse material 50 is rejected into the coarse material discharge shaft 44, the normal material 49 reaching the lower channel section 39.
- an adjustment flap 42a is also arranged, which serves to adjust the direction of flow and at the same time the flow rate of the supplied air. Furthermore, the position of the air supply slide 41 relative to the opening device according to FIG. 2a is changed.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Nonwoven Fabrics (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10025177 | 2000-05-24 | ||
DE10025177A DE10025177B4 (de) | 2000-05-24 | 2000-05-24 | Verfahren und Vorrichtung zur Auflösung von Ungleichmäßigkeiten in Holzfaserströmen |
PCT/EP2001/005729 WO2001089783A1 (de) | 2000-05-24 | 2001-05-18 | VERFAHREN UND VORRICHTUNG ZUR AUFLÖSUNG VON UNGLEICHMÄssIGKEITEN IN HOLZFASERSTRÖMEN |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1283766A1 true EP1283766A1 (de) | 2003-02-19 |
EP1283766B1 EP1283766B1 (de) | 2005-08-03 |
Family
ID=7643044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01945161A Expired - Lifetime EP1283766B1 (de) | 2000-05-24 | 2001-05-18 | Verfahren und vorrichtung zur auflösung von ungleichmässigkeiten in holzfaserströmen |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1283766B1 (de) |
AT (1) | ATE301029T1 (de) |
AU (1) | AU2001267458A1 (de) |
CA (1) | CA2411051C (de) |
DE (2) | DE10025177B4 (de) |
PL (1) | PL365953A1 (de) |
WO (1) | WO2001089783A1 (de) |
Families Citing this family (10)
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DE10156070B4 (de) * | 2000-05-24 | 2009-11-19 | Flakeboard Company Limited, St.Stephen | Verfahren und Vorrichtung zur Auflösung von Ungleichmäßigkeiten in Holzfaserströmen |
PT1307325E (pt) | 2000-08-11 | 2006-07-31 | Flakeboard Company Ltd | Processo e instalacao para aplicar cola em fibras previamente secas, destinadas ao fabrico de placas de fibras |
DE102006040044B3 (de) * | 2006-04-18 | 2007-06-06 | Flakeboard Co. Ltd. | Verfahren und Vorrichtung zum Beleimen von zur Herstellung von Faserplatten vorgesehenen, getrockneten Fasern |
DE102006027540B4 (de) * | 2006-06-14 | 2010-07-22 | Glunz Ag | Verfahren und Vorrichtung zur Herstellung von Formkörpern, insbesondere von Platten, aus Lignocellulose haltigen Fasern |
DE102011008757A1 (de) | 2011-01-17 | 2012-07-19 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Verfahren und Vorrichtung zum Aussichten von Verunreinigungen aus einem pneumatischen Faserstrom |
DE102017120043B3 (de) | 2017-08-31 | 2018-12-20 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Anlage und Verfahren zur Herstellung von beleimten Pflanzenpartikeln |
EP3966007A4 (de) * | 2019-05-07 | 2023-02-08 | IKEA Supply AG | Vorrichtung und verfahren zur herstellung von holzbasierten platten |
DE102019114037A1 (de) | 2019-05-26 | 2020-11-26 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung und Verfahren zur Herstellung eines Vlieses |
DE102019114038A1 (de) * | 2019-05-26 | 2020-11-26 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Vorrichtung und Verfahren zur Herstellung eines Vlieses |
CN116160527B (zh) * | 2023-02-01 | 2023-09-05 | 邳州市新世界木业有限公司 | 一种木质纤维加工用蒸汽爆破装置 |
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US2737997A (en) * | 1953-12-01 | 1956-03-13 | Allwood Inc | Apparatus for producing uniform mats of pourable particle material |
US2744848A (en) * | 1954-03-29 | 1956-05-08 | Long Bell Lumber Company | Making fiberboard of uniform density and thickness |
DE1089540B (de) * | 1956-06-28 | 1960-09-22 | Weyerhaeuser Timber Company | Verfahren zur Gewinnung einer Matte aus gegebenenfalls mit Binde-mitteln versetzten Lignozellulosefasern fuer die Herstellung von Holzfaserplatten od. dgl. |
AT220533B (de) * | 1960-02-22 | 1962-03-26 | Oesterr Amerikan Magnesit | Verfahren zur kontinuierlichen Herstellung von Holzwolle-Leichtbauplatten mit Auflageschichten und Vorrichtung zu seiner Durchführung |
US4322380A (en) * | 1979-01-19 | 1982-03-30 | Morrison-Knudsen Forest Products Company, Inc. | Method for feeding and orienting fibrous furnish |
DE3818117A1 (de) * | 1988-05-27 | 1989-11-30 | Baehre & Greten | Verfahren und vorrichtung zum herstellen von formkoerpern, insbesondere platten, aus hydratationswasser enthaltenden zellulose- und/oder lignozellulosehaltigen teilchen und einem mineralischen bindemittel |
SE467044B (sv) * | 1990-09-28 | 1992-05-18 | Flaekt Ab | Saett och anordning foer avskiljning av tyngre partiklar fraan ett partikelformigt material |
DE4302850B9 (de) * | 1993-02-02 | 2004-09-30 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Streumaschine zum Streuen von beleimtem Streugut zu Streugutmatten in einer Anlage zur Herstellung von Holzwerkstoffplatten |
DE4439653A1 (de) * | 1994-11-07 | 1996-05-09 | Baehre & Greten | Vorrichtung zum Streuen von beleimten Spänen, Fasern und dergleichen Teilchen |
EP0800901B1 (de) * | 1996-04-10 | 2003-07-02 | Dieffenbacher Schenck Panel GmbH | Verfahren zur Herstellung eines Vlieses und Vorrichtung |
DE19718158C2 (de) * | 1997-04-29 | 2003-04-24 | Kvaerner Panel Sys Gmbh | Verfahren und Vorrichtung zum windsichtenden Separieren |
SE510416C2 (sv) * | 1997-08-28 | 1999-05-25 | Sunds Defibrator Ind Ab | Sätt och anordning för formering av en matta av partikelmaterial |
DE19740676C2 (de) * | 1997-09-16 | 2003-07-17 | Fraunhofer Ges Forschung | Verfahren zum Beleimen von Fasern |
-
2000
- 2000-05-24 DE DE10025177A patent/DE10025177B4/de not_active Expired - Fee Related
-
2001
- 2001-05-18 WO PCT/EP2001/005729 patent/WO2001089783A1/de active IP Right Grant
- 2001-05-18 EP EP01945161A patent/EP1283766B1/de not_active Expired - Lifetime
- 2001-05-18 DE DE50106979T patent/DE50106979D1/de not_active Expired - Lifetime
- 2001-05-18 CA CA002411051A patent/CA2411051C/en not_active Expired - Fee Related
- 2001-05-18 AU AU2001267458A patent/AU2001267458A1/en not_active Abandoned
- 2001-05-18 AT AT01945161T patent/ATE301029T1/de active
- 2001-05-18 PL PL01365953A patent/PL365953A1/xx not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0189783A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10025177B4 (de) | 2004-04-15 |
DE10025177A1 (de) | 2001-12-13 |
CA2411051C (en) | 2007-04-24 |
WO2001089783A1 (de) | 2001-11-29 |
DE50106979D1 (de) | 2005-09-08 |
AU2001267458A1 (en) | 2001-12-03 |
ATE301029T1 (de) | 2005-08-15 |
PL365953A1 (en) | 2005-01-24 |
CA2411051A1 (en) | 2002-11-22 |
EP1283766B1 (de) | 2005-08-03 |
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