EP1140447B1 - Vorrichtung und verfahren zum streuen von teilchen zu einem vlies - Google Patents

Vorrichtung und verfahren zum streuen von teilchen zu einem vlies Download PDF

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Publication number
EP1140447B1
EP1140447B1 EP99966972A EP99966972A EP1140447B1 EP 1140447 B1 EP1140447 B1 EP 1140447B1 EP 99966972 A EP99966972 A EP 99966972A EP 99966972 A EP99966972 A EP 99966972A EP 1140447 B1 EP1140447 B1 EP 1140447B1
Authority
EP
European Patent Office
Prior art keywords
chips
scattering
fiber
accordance
particles
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
EP99966972A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1140447A1 (de
Inventor
Stanislav Klasterka
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.)
Induestrias Jomar - Madeiras E Derivados Sa
Original Assignee
Timberex Timber Exports 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
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Publication of EP1140447A1 publication Critical patent/EP1140447A1/de
Application granted granted Critical
Publication of EP1140447B1 publication Critical patent/EP1140447B1/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/249925—Fiber-containing wood product [e.g., hardboard, lumber, or wood board, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2911—Mica flake
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/298—Physical dimension

Definitions

  • the present invention relates to a device for spreading in particular with at least one binder particles, such as Lignocellulosic and / or cellulosic fibers, chips or similar particles, to a nonwoven, in particular for the production of shaped objects, primarily in the form of plates, with at least a dosing hopper containing the particles, with at least one of the Dosing hopper downstream scattering station for the particles and with a Forming tape arranged below the spreading station for receiving of the fleece.
  • binder particles such as Lignocellulosic and / or cellulosic fibers, chips or similar particles
  • the invention relates to a method for manufacturing of chip-fiber combination boards, each consisting of two with at least a layer of fibers added to a binder and a arranged between the cover layers, with at least one binder staggered chips formed middle layer, in particular to operate a corresponding device, as well as a corresponding Span-fiber combination board directed.
  • Devices for scattering nonwovens are known in many variants. These devices are usually each specific to the one to be manufactured End product, for example the type of board to be produced (Fiberboard, chipboard or chip-fiber combination board) and on a respective fixed width of the fleece to be sprinkled. On Change of manufacture from one type of product to another type of product requires a relative costly conversion of the system and the associated downtimes the plant and relatively high costs.
  • the manufacture is very variable different product types, i.e. optionally chip, fiber or chip fiber combination boards, at enable economically justifiable effort.
  • a chip-fiber combination plate according to the invention is characterized by the features of claim 16.
  • the inventive device according to claim 1 enables both the production of single or multi-layer chipboard or fiberboard as also of chip-fiber combination boards, without a complex Modification of the device is required.
  • Chip-fiber combination panels also have both a very high strength as well as optimal surface properties, at the same time the outer layers consisting of fibers or chips can be made relatively thin.
  • Chips each have a buffer zone between those forming the top layer Fibers and the coarse chips forming the core. Through this Buffer zone prevents the coarse structure of the coarse chips through the fiber top layers, whereby the surface of the plates produced from the fleece an undesirable would get roughness. This so-called "through telegraphing" the coarse chips on the outside of the panels are thus removed with chip-fiber combination panels, with the device according to the invention are prevented.
  • chip-fiber combination panels produced according to this process on the one hand, a particularly high strength due to the increased connection between cover layers and middle layer and on the other hand optimal surfaces due to the prevented telegraphy effect have.
  • the chip-fiber combination boards obtained in this way have a very closed surface, for example is ideal for painting because of the closed Surface the required amount of paint can be reduced.
  • the device designed according to the invention is in addition to the generation of chip-fiber combination boards but also for the production of pure Chipboard and pure fiberboard suitable. Both one and multilayer chipboard or fibreboard can also be produced. Should only chipboard are produced, so are the fiber scattering stations decommissioned, so that only from the chip spreading station a fleece on the Form tape is scattered. Due to the existing fractionation device the scattered fleece, for example, is made of coarse chips existing middle class and two external, consisting of fine chips Have top layers. However, it is also possible to use the fractionation device to be fed exclusively with homogeneous chips, so that a single-layer chip fleece can be sprinkled.
  • the chips spreading station can be deactivated accordingly that only a nonwoven made of fibers on the forming belt is scattered. Depending on the desired thickness of these nonwovens, only one of the fiber scattering stations or both fiber scattering stations activated his.
  • the fiber scattering stations are advantageous for spreading homogeneous Fiber material formed because the device according to the invention on this Way can be simplified. Since the formation of chips existing middle class a fractionation of these chips takes place that the fine chips on the outside of the middle layer too can come through this fractionation, the optimal connection be generated between the middle layer and the outer layers, so that a corresponding fractionation of those forming the outer layers No need for fibers.
  • each spreading station can have its own Dosing bunker or at least part of the fiber scattering stations, in particular all fiber scattering stations, a common dosing bunker be assigned.
  • the Spreading stations are separate from each other.
  • this modular Design ensures that standard spreading stations are used can, so that the cost of a corresponding trained according to the invention Device can be reduced.
  • the device designed according to the invention can be both continuous as well as a cycle press for pressing the scattered fleece downstream.
  • the fleece is usually pressed with simultaneous supply of heat, with an additional preheating the fleece, especially immediately before the downstream one Pressing device, as well as a pre-pressing, for example the scattered from the fiber scattering station arranged on the input side Partial fleece can be done.
  • a device according to claim 4 makes it possible to make nonwovens different Spread width without, for example, different widths To have to provide conveyor belts or spreading devices.
  • a common spreading station can be sprinkled onto the ribbon can be used without making changes to it Need to become. Only the one that is arranged in its full width on the forming belt Fleece is provided by the one on the top of the forming belt Particle separator reduced to the desired width, wherein the excess particles are discharged laterally. Due to the adjustability the particle separator can thus use nonwovens with any Latitude using common spreading stations as well as usual conveyor belts are generated.
  • the particle separation device preferably comprises two symmetrically subunits arranged to the longitudinal axis of the forming belt.
  • This can be designed, for example, as rotating separation units with of the particles forming the edge areas of the fleece laterally outwards can be transported away.
  • the subunits can, for example also be designed as separating walls, at least in some areas essentially parallel to the direction of movement of the forming belt run and aligned substantially perpendicular to the forming belt are.
  • By adjusting the rotating separation units or the partition walls in the horizontal direction, in particular across the forming belt can adjust the width of the scattered fleece to the desired width be reduced. This can be done by the particle separator laterally discharged particles the dosing hopper of the spreading device are fed again so that they can be used for the further spreading process To be available.
  • These partition walls extend over the entire length of the second spreading station, so that the from this second spreading station also spread in the maximum width Particles partially within the separating walls on that of of the first scattering station and partially outside the Partition walls come to rest directly on the forming belt.
  • the two-layer fleece is fed to a further scattering station, then can there in an analogous manner by means of partition walls and subordinate rotating separation units with another full layer first Width are spread, and then again to generate the reduced the desired width the excess particles in unmixed Condition discharged and the dosing hopper of the third spreading station can be fed for further use.
  • the device shown in Fig. 1 comprises an input side Dosing hopper 1, in which several scraping rakes 2 are arranged are. In the dosing hopper 1 with at least one binder offset homogeneous fiber particles 3 entered as bulk, as it is indicated by an arrow 4.
  • the via the discharge rollers 7 and the bottom belt 6 from the dosing hopper 1 led out particles 3 are arranged on the input side Fiber scattering station 8 with spreader rollers 9 on an endless round deflection rollers circumferential forming tape 11 scattered into a fleece 12.
  • the fiber scattering station 8 initially becomes a lower one in this way Cover layer 13, consisting of homogeneous and with at least one Binder offset fiber particles 3 of the nonwoven 12, generated.
  • the fiber scattering station 8 on the input side is shown by an arrow 14 shown transport direction of the forming belt 11 a scattering station 15th downstream for scattering chips 20, 21.
  • the chip scattering station 15 comprises two dosing bunkers 16, 17, each in the several scraper rakes 18, 19 are arranged. That from different large chips 20, 21 and at least one binder Bulk material is fed to the dosing bunkers 16, 17 from above, as indicated by arrows 22, 23.
  • each via two deflection rollers guided endless scraper belt 30, 31 there is one each via two deflection rollers guided endless scraper belt 30, 31 arranged, the lower strand of each via screening devices 32, 33 with different hole sizes is guided so that different sections 32 ', 32 ", 32"' and 32 “” or 33 ', 33 ", 33"' and 33 “” of the screening devices 32, 33 are formed.
  • the screening devices 32, 33 form together with the scraper belts 30, 31 fractionation devices 34, 35 through which the chips 20, 21 after their sizes can be fractionated.
  • the sections 32 ', 32 ", 32'” and 32 “” and 33 ', 33 ", 33"' and 33 “” of the Sieving devices 32, 33 are arranged so that the fine chips 20, 21 each in the areas located outside in the transport direction of the fleece the chip scattering station 15 is scattered onto the lower cover layer 13 while the coarse chips 20, 21 over the inner areas the fractionation devices 34, 35 scattered on the cover layer 13 become.
  • a middle layer 36 of the fleece 12 is produced, which in their outer layers of fine chips and coarse in their inner layers 20, 21 having.
  • the fiber particles 3 with the fine chips 20, 21 together.
  • a preferred embodiment of the chip scattering station 15 is in the German one Patent 197 16 130 described, so that for a more detailed description the chip scattering station 15, particularly with regard to training the scraper belts 30, 31, the screening devices 32, 33 and the axisymmetric
  • the two partial spreading stations are connected in series the content of this patent expressly included in the present application is recorded.
  • the chips spreading station 15 in another suitable manner, only it is necessary that the chips 20, 21 are fractionated into fine and coarse chips occur and those scattered by the scattered chips 20, 21 Middle class in its outer layers the fine and in its middle layer the has coarse chips.
  • the chip scattering station 15 is an output-side fiber scattering station 8 ' downstream with a dosing hopper 1 ', which corresponds to the input side arranged fiber scattering station 8 is formed. Accordingly are the individual elements of the fiber scattering station 8 'and Dosing bunkers 1 'with the same reference numerals as on the input side Fiber scattering station 8 and the dosing hopper 1 on the input side provided, the reference numerals only provided with a dash were.
  • an upper cover layer 37 is made of homogeneous Fiber particles 3 'scattered on the middle layer 36, so that at the Junction between the top cover layer 37 and the middle layer 36 the fine fiber particles 3 'with the fine chips 20, 21 in Connect.
  • the device shown in Fig. 1a sits in Fig. 1b in the direction of the arrow 14 continues.
  • the fleece 12 is made of one of two rotating, endless Belts 38, 39 formed pre-press unit 40 through which the fleece 12 is pre-compressed.
  • the pre-pressed fleece 12 emerging from the pre-pressing unit 40 becomes passed over a preheating device 41, only indicated schematically, with, for example, heated water vapor, heated air, heated water vapor / air mixture as well as any other additives in the pre-compressed Fleece 12 are introduced.
  • a pressing device immediately adjoins the preheating unit 41 42, in the illustrated embodiment as a continuous pressing device is formed with rotating press belts 43, 44. In the Pressing device 42 will then apply the fleece 12 with the application of heat pressed its final thickness. Basically, it is also possible that Instead of a continuous pressing device, a clock press is provided is.
  • a pre-pressing unit and / or a pre-heating unit can be provided anywhere in the shown in Fig. 1 Device.
  • a pre-pressing unit and / or a pre-heating unit be provided for pre-pressing lower cover layer 13 between the input-side fiber scattering station 8 and the chip spreading station 15.
  • a pre-pressing unit can be provided for pre-pressing lower cover layer 13 between the input-side fiber scattering station 8 and the chip spreading station 15.
  • a pre-pressing unit can be provided between the chip scattering station 15 and the fiber scattering station on the output side
  • a corresponding pre-pressing unit 8 ' can be provided his.
  • the forming tape is preferably air-impermeable, while in the Area of the preheating unit 41, the belt 45 carrying the fleece 12, for example for feeding heating medium into the fleece 12 permeable to air can be trained.
  • FIG. 2 part of the device according to FIG. 1 is greatly simplified in FIG Shown top view.
  • the fiber-scattering station 8 on the input side can be seen, with which the lower cover layer 13 of the fleece 12 is sprinkled onto the forming belt 11.
  • the fleece 12, which is shown hatched, is scattered in a maximum width B 1 that is slightly smaller than the width of the forming belt 11.
  • the fiber scattering station 8 are connected downstream in the transport direction 14 two separating units aligned essentially perpendicular to the forming belt 46, 47, which are adjustable transversely to the transport direction of the forming belt 11 are, as indicated by arrows 48, 49.
  • the separation units 46, 47 can be used, for example, as rotating rollers with a corrugated surface and / or with a star-shaped cross section, as rotating brushes or as another for separating the one arranged in the edge region of the fleece 12 Separation units suitable for fiber particles are formed.
  • the separating units 46, 47 can be rotated in accordance with arrows 50, 51 that the edge areas of the fleece 12 forming fiber particles laterally be dissipated.
  • the removed fiber particles 3 fall below of the forming belt 11 arranged discharge belt 52, which along Arrows 53 is movable and with which the particles 3 'to the dosing bunker 1 can be returned.
  • the width B 2 of the fleece 12 can be set as desired.
  • partition walls 54, 55 are arranged essentially parallel to the transport direction in the region of the surface of the forming belt 11 in such a way that the distance between the partition walls 54, 55 is substantially equal to the width B 2 of the fleece 12. Only in the inlet area are the separating walls 54, 55 deformed outward so that the fleece 12 is securely inserted into the area between the separating walls 54, 55 without the fleece 12 being torn open in its side areas.
  • separating wall 54 is designed as a plate-shaped wall section is the separating wall 55 by an endless revolving Band formed which is movable over deflection rollers 56 along an arrow 57 is.
  • both separating walls 54, 55 in be designed in the same way.
  • the separating wall 55 As a continuous endless belt it is achieved that the friction between the outer edge of the fleece 12th and the separating wall 55 is reduced or made zero. To this This prevents the outer edge of the fleece from being impaired.
  • the separating walls 54, 55 are transverse to the transport direction of the forming belt 11 adjustable, as indicated by arrows 58, 59.
  • Above the separating walls 54, 55 is the input-side part of the chip scattering station 15 arranged, for example as shown in Fig. 2 four sieving devices 32 ', 32 ", 32' '', 32" “includes.
  • the sieving devices 32 ', 32 ", 32' '', 32" "selected so that the hole size of the corresponding Sieves in the transport direction 14 of the forming belt 11 increases.
  • the width of the fleece 12 is reduced fine chips and at the output end of the input part of the Chips scattering device 15 scattered the coarse chips.
  • the separating units 60, 61 are also adjustable transversely to the transport direction of the forming belt 11, as is indicated by arrows 62, 63. In this way, the separation units 60, 61 can be adapted to the width B 2 of the fleece 12.
  • the separation units 60, 61 are rotatable according to arrows 64, 65, see above that a lateral removal of the chips 20 on a below the forming belt 11 provided discharge belt 66 is reached.
  • the discharge belt 66 is moved along arrows 67, so that the on the discharge belt 66th lying chips 20 to the dosing hopper 16 of the chip spreading device can be returned.
  • the separating walls 54, 55 extend behind the separating units 60, 61, since from this area the laterally excess chips 20 completely are discharged so that the separating walls 54, 55 in the area behind the separation units 60, 61 are no longer required. Only in Area of the second part of the chip spreading device, not shown in FIG. 2 15 again need new partition walls accordingly the partition walls 54, 55 shown in FIG become. In principle, however, it is also possible to use the separating walls 54, 55 to extend over the entire length of the device according to FIG. 1.
  • the separation units 46, 47, 60, 61 and the separating walls 54, 35 according to FIG. 2 are also provided in the device according to FIG. 1. These elements are only not shown in FIG. 1 for a better overview. If a variable width setting is not required in the device according to FIG. 1, the separating units 46, 47, 60, 61 and the separating walls 54, 55 can also be omitted. Furthermore, corresponding separation units and separating walls can also be used in devices with only a single spreading device or any number of spreading devices in order to obtain a device with variable width spreading. In the case of a device with only a single spreading station, the separating walls can be dispensed with and, after spreading a fleece over the maximum width B 1, the desired width B 2 of the fleece can only be achieved by the rotating separation units.
  • the edging saws 69, 70 can be adjusted along arrows 71, 72 transversely to the running direction 14 of the forming belt 11, so that the width of the cover layer 13 can be variably adjusted.
  • the separated fiber particles are sucked off pneumatically and returned to the input-side metering bunker 1 of the fiber-scattering station 8 on the input side.
  • the lower cover layer 13 reduced to the width B 2 is, as already described for FIG. 2, guided between two separating walls 54, 55, the chips 20 simultaneously forming the middle layer 36 of the fleece 12 on the cover layer through the chip scattering station 15 13 are scattered.
  • the separating walls 54, 55 are at their ends laterally outwards bent so that the outside of the partition walls 54, 55 on the Ribbon 11 scattered chips 20 due to the movement of the ribbon 11 can be discharged to the outside, as indicated by arrows 73, 74 is.
  • This removal of the chips 20 is not shown Discharge devices, for example screw conveyors, suction units, Brush rollers or the like, supported. Basically it is too possible to form the ends of the separating walls 54, 55 running straight and the discharge only through the mentioned discharge devices to enable. Furthermore, the ends are also possible the separating walls 54, 55 to the outer edge of the forming belt or in addition to lead so that the removal of the chips 20 exclusively takes place via the separating walls 54, 55. The removed chips 20 are then fed to the dosing bunkers 16, 17 in the usual way.
  • Separation walls 75, 76 are also provided below the output-side fiber scattering station 8 'for separating the laterally excess fibers 3' from the fibers 3 'forming the upper cover layer 37 with the width B 2 .
  • the separating walls 75, 76 are designed to be adjustable transversely to the transport direction of the fleece 12, as is indicated by arrows 77, 77 ', 78, 78'.
  • the excess fibers 3 ' can be discharged laterally along arrows 79, 80 in a manner similar to that of the chips 20 described above, although the extraction of the fibers 3' is preferred here.
  • the removed fibers 3 ' are in turn fed to the dosing hopper 1' for further use.
  • height adjustable leveling roller for leveling the lower cover layer 13 of the fleece 12 may be arranged.
  • a continuous one Measurement and monitoring of the lower cover layer to be leveled 13 is, for example, by one of the leveling roller Downstream basis weight measurement and control system possible through which the height adjustment of the leveling roller is adjustable. With this height adjustment can then be a specifiable basis weight of the lower Cover layer 13 of the nonwoven 12 are kept constant.
  • the middle layer and / or the upper cover layer 37 of the fleece 12 can there is also a leveling roller and a basis weight measurement and assign control system. Excess goods accumulating when leveling chips and / or fibers are removed, for example suctioned off, and returned to the respective dosing bunker 1, 1 '16, 17.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Nonwoven Fabrics (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Treatment Of Fiber Materials (AREA)
EP99966972A 1998-12-16 1999-12-15 Vorrichtung und verfahren zum streuen von teilchen zu einem vlies Expired - Lifetime EP1140447B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19858096 1998-12-16
DE19858096A DE19858096A1 (de) 1998-12-16 1998-12-16 Vorrichtung und Verfahren zum Streuen von Teilchen zu einem Vlies
PCT/EP1999/009984 WO2000035644A1 (de) 1998-12-16 1999-12-15 Vorrichtung und verfahren zum streuen von teilchen zu einem vlies

Publications (2)

Publication Number Publication Date
EP1140447A1 EP1140447A1 (de) 2001-10-10
EP1140447B1 true EP1140447B1 (de) 2003-03-26

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EP99966972A Expired - Lifetime EP1140447B1 (de) 1998-12-16 1999-12-15 Vorrichtung und verfahren zum streuen von teilchen zu einem vlies

Country Status (13)

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US (1) US6833183B2 (pt)
EP (1) EP1140447B1 (pt)
JP (1) JP3858059B2 (pt)
CN (1) CN1143764C (pt)
AT (1) ATE235356T1 (pt)
AU (1) AU2284000A (pt)
BR (1) BR9916231B1 (pt)
DE (2) DE19858096A1 (pt)
DK (1) DK1140447T3 (pt)
ES (1) ES2196915T3 (pt)
PT (1) PT1140447E (pt)
RU (1) RU2208515C2 (pt)
WO (1) WO2000035644A1 (pt)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013092817A1 (de) 2011-12-23 2013-06-27 Basf Se Lignocellulosewerkstoffe mit inhomogen im kern verteilt vorliegenden expandierten kunststoffteilchen
WO2013092963A2 (en) 2011-12-23 2013-06-27 Basf Se Lignocellulosic materials with lignocellulosic fibers in the outer layers and expanded plastics particles present in the core
IT201900019799A1 (it) * 2019-10-25 2021-04-25 Imal Srl Procedimento ed impianto per la realizzazione di pannelli in materiale legnoso

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JP3858059B2 (ja) 2006-12-13
AU2284000A (en) 2000-07-03
WO2000035644A1 (de) 2000-06-22
US6833183B2 (en) 2004-12-21
CN1330584A (zh) 2002-01-09
US20010017428A1 (en) 2001-08-30
BR9916231A (pt) 2001-09-04
DE19858096A1 (de) 2000-06-21
PT1140447E (pt) 2003-08-29
RU2208515C2 (ru) 2003-07-20
ATE235356T1 (de) 2003-04-15
CN1143764C (zh) 2004-03-31
EP1140447A1 (de) 2001-10-10
ES2196915T3 (es) 2003-12-16
DE59904790D1 (de) 2003-04-30
DK1140447T3 (da) 2003-06-30
BR9916231B1 (pt) 2009-05-05

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