EP1480797B1 - Dispositif pour produire un non-tisse - Google Patents

Dispositif pour produire un non-tisse Download PDF

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Publication number
EP1480797B1
EP1480797B1 EP03706585A EP03706585A EP1480797B1 EP 1480797 B1 EP1480797 B1 EP 1480797B1 EP 03706585 A EP03706585 A EP 03706585A EP 03706585 A EP03706585 A EP 03706585A EP 1480797 B1 EP1480797 B1 EP 1480797B1
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EP
European Patent Office
Prior art keywords
particles
roller group
rollers
fractionated
particle stream
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EP03706585A
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German (de)
English (en)
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EP1480797A1 (fr
Inventor
Friedrich Schröder
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BINOS GmbH
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Binos Technologies & Co KG GmbH
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • 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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/60—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/655—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents

Definitions

  • the invention relates to devices according to the preamble of claim 1 and 12, respectively.
  • the starting mixture is subjected to a mechanical pre-dissolution and then pneumatically separated by an air flow directed transversely to the direction of fall.
  • Part of the pneumatically separated material stream falls on a unit for the controllable mechanical dissolution of this part and for its scattering such that the material particle thickness increases continuously in the web.
  • This unit has a roller chair with several rolls rotating about its horizontal axis. Every second roll can be raised or lowered to influence the final separation. Overall, the unit can be moved in a horizontal direction through the pneumatically separated material flow. Each roller can be regulated in its speed and direction of rotation.
  • This device is complicated and complicated in the drive and in the mutual coordination of all drivable elements.
  • the DE 198 46 106 A1 describes a spreading station for uniformly depositing a spreadable material with a pneumatic fractionating and a roll group.
  • the roll group is not associated with a particular section of the fractionated litter material, but extends over the entire extent of the fractionated litter material in the direction of the mold base.
  • the roll group also serves to mix the scattering material. Due to the arrangement of the roller group, however, it is not distinguished according to the different size of the particles in different fractions of the litter material, but all particles of the fractionated litter material are equally influenced by the roller group. In addition, a group of rollers arranged in this way is not very effective with respect to a mixing of the scattering material.
  • the device In the region of the discharge parabolas of the pneumatic fractionating device, the device has a ball-catching device which extends from the region perpendicularly below the discharge of the fibrous particles in the direction of the discharge parabolas and ends before the end of the region of the discharge parabolas.
  • the ball catching device is used to catch balls that should have formed in the raw material to be scattered, even if they follow the visual wind forces, and carry out in the opposite direction of the wind.
  • the ball-catching device allows incident chips to pass.
  • the ball-catching device may comprise a pulley screen with a plurality of co-rotating disk wheels with intermeshing disks, the disk spacing of which allows incident chips to pass through.
  • the device screens may be provided which are arranged within the Abschparabeln to catch balls and to guide the disc screen.
  • the ball-catching device is thus designed so that they only one Influence on the balls, which are undesirable and thus sort out, but have no effect on the chips, which are intended for the production of the fleece.
  • the DE 20 49 721 A describes a device for sprinkling wood chips, in which is arranged downstream of a pneumatic fractionating perpendicular to a mold base, a vibrating sieve.
  • the screen serves to trap the extra large surface light particles, which are possibly driven to the opposite outer ends of a distribution chamber, and to guide them onto the web at locations intermediate the surfaces of the press ready web, where it will improve the quality of the board not adversely affect.
  • the DE 42 12 001 A1 describes a device for spreading fibrous particles, in which downstream of a pneumatic fractionating a sieve is arranged.
  • This sieve forms a flight chopper and has a total of a perpendicular to a mold base orientation.
  • the sieve is wave-shaped in cross section, in particular folded in a zigzag shape.
  • the DE 44 39 653 A1 discloses a glued particle spreader wherein a coarse crop catcher is provided at a transport end of a roll group.
  • the invention has for its object to improve the formation of the web.
  • a binder for the particles in particular chips, is preferably used in a conventional manner glue.
  • the web is subsequently fed to a press and pressed into a plate-shaped workpiece.
  • the cover layers have a comparatively high density because of the relatively small particles arranged therein.
  • these cover layers are sanded subsequently smooth.
  • this grinding process only comparatively small fractions of the finest particles are removed according to the invention. This is achieved in that the first end portion of the fractionated particle stream containing even the smallest particles is collected by the conveyor belt and mixed and homogenized on the first group of rolls. This results in a fraction mixture of the smallest, but also larger particles.
  • the homogenized fraction mixture is scattered in several streams on the mold backing or the resulting web. It is of particular advantage that the disadvantages of so-called dust spots or glue spots on the non-woven are avoided.
  • Such stains have hitherto been caused by the fact that dust or lumps of glue which form over time in the device fall suddenly and uncontrollably and reach the fleece. Such stains lead not only to optically disturbing areas on the finished product, but also to reduced strength to the rejects.
  • dust or glue lumps can not reach the surface of the fleece. If such lumps were to reach the homogenizing device up to the first group of rolls, they are mixed there with the fraction mixture and homogenized in such a way that they can no longer be impaired.
  • the homogenized fraction mixture forms the outer layers of the nonwoven.
  • the outermost part of the cover layers is removed.
  • the particular advantage of the procedure according to the invention is that in the ground surface of the plate significantly more ultrafine particles are contained than in the prior art. This results in desirably higher density and roughness on the ground surface of the grinding surface of the board.
  • the features of claim 6 are drive technology particularly favorable.
  • the fraction mixture can be applied to an end region of the first group of rolls.
  • the homogenization then takes place over the entire length of the first group of rolls in the direction of the relative movement.
  • all rollers of the second roller group rotate in such a direction of rotation that the impinging particles are transported in the direction of the screening device. This allows a particularly effective mixing can be achieved.
  • the homogenization can be favorably influenced.
  • a horizontal distance between the transport and a rear side of the screen is created by the features of claim 9.
  • a middle region of the fractionated particle stream which has passed through the sieve falls.
  • This central region has a continuously changing particle size in the direction of relative movement on. This results in a transition layer between the homogenized cover layer and possibly also homogenized middle layer of the nonwoven.
  • This transition layer with its continuously changing particle size can provide a technologically particularly favorable transition from the cover layer to the middle layer.
  • the horizontal distance can be structurally particularly simple set.
  • the binder is preferably glue. After the nonwoven fabric is formed, it is fed to a press and pressed into a plate-shaped workpiece. The particles pass under the action of a pneumatic fractionator on a mold pad. There is a relative movement between the fractionating device and the mold base. That is, either the mold pad moves relative to the fractionator or vice versa. In a lower cover layer and an upper cover layer of the web to be produced while relatively small particles are arranged. A relative to the horizontal inclined sieve with at least one sieve is arranged downstream of the particle trajectories of the fractionator that relatively large particles can be intercepted from the fractional particle flow. These trapped particles are used to make the web.
  • the trapped particles are imparted to a group of rollers by the inclination of the screen device.
  • This group of rolls is arranged so that particles from an end portion of the fractionated particle stream containing the largest particles also strike the group of rolls.
  • the largest particles are the particles that are least blown by the fractionator.
  • the roll group serves as a homogenization unit.
  • the rollers of the roller group are arranged parallel to each other and transversely to a relative movement in height between the mold base and the pneumatic fractionating device. Between the individual adjacent rolls of the roll group there is a gap which is uniform in the longitudinal direction of the rolls and in each case forms a partial stream of the homogenized particles.
  • the rollers of the group of rollers run in the same direction of rotation and each scatter a particle stream of the homogenized particles on the mold base.
  • a homogeneous middle layer is sprinkled on the lower cover layer, which consists of the fine particles which have passed through the sieve device.
  • the middle layer consists of the particles intercepted by the screening device which are larger than the particles forming the lower covering layer and the still larger particles which have not reached the screening device through the fractionating device.
  • the middle layer As a result of the device according to the invention, the middle layer, as described above, consists of mutually mixed and thus homogenized particles of different sizes. This is very beneficial for the following reasons: First, existing air spaces between larger particles are filled with smaller particles. As is known, larger particles receive less glue when co-gluing with smaller particles than the finer particles, the finer particles with their higher glue content form glue bridges to the larger, less glued particles. This leads to a more closed middle layer, which in particular has higher transverse tensile strengths, and to an improvement in the plate properties. For if the roll group were not present, the particles in the scattered web would increase in size from the lower cover layer to the middle of the middle layer, ie the largest particles would be deposited centrally in the middle layer.
  • the increase in particles from the lower cover layer to the middle of the middle layer would be transitionless. Due to the said different glue application
  • the weakest zone of the fabricated plate would be in the middle of the middle layer because it would contain the least amount of sizing and air spaces between the larger particles would not be filled with finer particles. Due to the airspaces, the middle class would make an "open" visual impression.
  • such a plate would have low transverse tensile strengths, but would also have poor nail and screw retention, as well as poorer milling, grooving, and feathering properties, etc. These negative properties could only be achieved by increased glue usage and / or higher specific gravity of the overall plate be improved.
  • the specific weight of plates and the amount of glue can be reduced, the strength properties, in particular the transverse tensile strength, are maintained. In this way, significant savings in production costs can be achieved.
  • the rollers preferably have such a direction of rotation that the particles are transported in the direction of the screening device, that is to say the coarser particles are transported to the particles reaching the roller group from the screening device. This allows a particularly effective mixing can be achieved.
  • the direction of rotation of the rolls can also be such that the smaller particles are transported to the larger particles.
  • the gaps between the individual adjacent rolls of the roll group may be the same. However, the gaps between the individual rolls can also be of different sizes; in particular, the gaps can be the same within groups of rolls of the roll group, but the groups can have gaps of different sizes among one another.
  • the gaps can also increase or decrease in the transport direction. In this case, a group-wise increase or decrease in the gap size can be provided.
  • a coarse crop catcher can be provided which has not fallen through the nips of the roll group.
  • Fig. 1 shows a device 1 for the continuous production of a nonwoven 2 from binder-provided, fibrous particles, in particular chips, of different sizes.
  • a starting mixture 3 of the particles passes in a conventional manner on a conveyor belt 4 from a dosing bunker not shown at a discharge point 5.
  • the there thrown output mixture 3 initially falls vertically downwards and is then acted upon by classifying air 6, which in the horizontal direction from a register 7 a pneumatic fractionating 8 exits.
  • the view air 6 has the consequence that the starting mixture is fractionated into a fractional particle stream 9.
  • This fractionation of the starting mixture 3 takes place in a viewing chamber 12, the housing 13 is only partially indicated.
  • a remote from the register 7 wall 14 of the housing 13 is provided with fine openings 15, through the visible air 16 can leave the viewing chamber 12.
  • the visible exhaust air 16 is cleaned in a conventional manner of residual dusts and preferably recirculated to the register 7.
  • the first end section 10 of the fractionated particle stream 9 is caught by an upper strand of a conveyor belt 18 which circulates in the direction of an arrow 17.
  • the thus collected first end portion 10 is according to an arrow 19 on in Fig. 1 right end of the conveyor belt 18 dropped onto a first group of rollers 20.
  • Rollers 21 of the first group of rollers 20 are the same and arranged with mutually parallel and transverse to a relative movement 22 oriented longitudinal axes and in this case in the direction of the arrows 23 in the same direction rotationally driven.
  • the relative movement 22 takes place between a mold base 24 and the device 1.
  • the mold base 24 is band-shaped and can be driven to produce the relative movement 22.
  • the device 1 itself is thus arranged stationary in this case.
  • the device 1 may be movable and the mold base 24 may be stationary during the scattering process.
  • the first end portion 10 forms a mixture of fractions, which is applied in the direction of the arrow 19 to the first group of rollers 20.
  • the first group of rolls 20 ensures thorough mixing and homogenization of the fraction mixture. Between adjacent rollers 21 of the first group of rollers 20 there is an equally large, each a partial flow 25 to 27 of the homogenized fraction mixture forming gap 28th
  • the partial streams 25 to 27 are successively in the in Fig. 1 schematically indicated manner and form on the mold base 24 a lower
  • the lower cover layer 29 of a thickness 30 is thus formed by three mutually substantially identical, homogenized layers of the partial streams 25 to 27.
  • a lower half 31 of a middle layer is subsequently scattered. This is done with the second end portion 11 of the fractionated particle flow 9.
  • the second end portion 11 extends into Fig. 1 to the right up to the conveyor belt 18 and has from left to right decreasing particle size. Accordingly, the lower half 31 of the middle layer in Fig. 1 from bottom to top increasing particle size and a thickness 32 on.
  • Fig. 2 shows a way to change the effective length of the conveyor belt 18.
  • a right deflecting roller 33 is arranged stationary.
  • a left guide roller 34 is horizontally adjustable in the directions of a double arrow 35.
  • the left deflecting roller 34 is drawn in the end position in which the minimum effective length of the conveyor belt 18 results.
  • an adjustment roller 36 moves to the left while the conveyor belt 18 continues to pass over a stationary guide roller 39.
  • the effective length of the conveyor belt 18 can be adjusted continuously. Accordingly, the first end portion 10 of the fractionated particle stream 9 caught by the transport belt 18 becomes larger or smaller, and the thickness 30 of the lower cover layer 29 becomes larger or smaller.
  • the conveyor belt 18 is preceded by a relative to the horizontal inclined screening device 40.
  • the screening device 40 can have only one sieve, but alternatively also several sieves.
  • the conveyor belt 18 is in this case brought up to a rear side 41 of the screening device 40.
  • all particles of the fractionated particle stream 9 passing through the screening device 40 are collected by the conveyor belt 18 and used to spread the lower cover layer 29 in the manner already described.
  • relatively large particles 42 from the fractional particle flow 9 intercepted and abandoned together with the second end portion 11 of the fractional particle stream 9 to a second set of rollers 43.
  • This second roller group 43 is also formed as a homogenization unit, by means of which the discontinued particles are homogenized in terms of particle size. Between adjacent rollers 44 of the second roller group 43 there is an equally large, each a partial flow 45 to 47 forming gap 48. The partial flows 45 to 47 are substantially equal to each other and homogenized and are successively sprinkled to form the lower half 31 of the middle layer. So it finally has in the embodiment according to Fig. 3 also in the middle layer a homogenized size distribution of the particles.
  • a collecting device 49 for coarse material 50 is provided, which could not pass through the gaps 48 of the second roll group 43.
  • the removal of the coarse material 50 from the collecting device 49 takes over in this case, a screw conveyor 51st
  • the embodiment according to Fig. 4 illustrates a modification of the device 1 according to Fig. 3
  • the difference is that in Fig. 4 the conveyor belt 18 in a horizontal distance 52 from the back 41 of the screening device 40 is arranged.
  • the size of the horizontal distance 52 can, for example, by the features according to Fig. 2 , be adjustable.
  • Fig. 5 shows another device 1 for the continuous production of a nonwoven fabric 2 made of binder-containing, fibrous particles, in particular chips, of different sizes.
  • a starting mixture 3 of the particles passes in a conventional manner on a not shown conveyor belt from a dosing bunker not shown at a discharge point 5.
  • the thrown there output mixture 3 initially falls vertically downwards and is then acted upon by classifying air 6, which in the horizontal direction from a Register 7 of a pneumatic fractionator 8 exits.
  • the view air 6 has the consequence that the starting mixture is fractionated into a fractional particle stream 9.
  • the finest particles of the particle stream 9 are to be found in a first end section 10 and the coarsest particles in a second end section 11 of the fractionated particle flow.
  • This fractionation of the starting mixture 3 takes place in a viewing chamber 12, the housing 13 is only partially indicated.
  • a side facing away from the register 7 wall 14 of the housing 13 is provided with fine openings 15, leave through the visual exhaust air 16, the viewing chamber 12 can.
  • the visible exhaust air 16 is cleaned in a conventional manner of residual dusts and preferably recirculated to the register 7.
  • the pneumatic fractionating 8 is followed by a relative to the horizontal inclined screening device 40.
  • the screening device 40 can have only one sieve, but alternatively also several sieves. All of the particles of the fractionated particle stream 9 passing through the screening device 40 are deposited by gravity on a mold base 24 which moves relative to the pneumatic fractionating device 8 and form a lower cover layer 29 of-a thickness 30.
  • the mold base 24 designed band-shaped and 22 for driving the relative movement driven.
  • the mold base 24 may be arranged stationary during the scattering process, while the other parts of the device 1 move relative to the mold base 24.
  • the size of the particles in the lower cover layer 29 increases with increasing distance from the mold pad 24.
  • a lower half 31 of a homogeneous middle layer is subsequently scattered. This is done as explained below with the second end portion 11 of the fractionated particle stream 9 and the particles 42 captured by the screening device 40. These particles 42 are finer relative to the particles of the second end portion 11 but coarser relative to the particles of the first end portion 10.
  • the second end portion 11 extends in Fig. 5 to the right up to the screening device 40 and has from left to right decreasing particle size.
  • the relatively large particles 42 are intercepted from the fractional particle stream 9 and fed together with the second end portion 11 of the fractional particle flow to a roller group 43.
  • the roller group 43 is formed as a homogenizing unit, through which the charged particles with respect to the particle size be thoroughly mixed and homogenized.
  • the gaps 48 between adjacent rollers 44 of the roller group 43 are of equal size and each form a partial flow 45 to 47.
  • the rollers 44 can rotate so that the impinging particles are transported in the direction of the screening device 40, ie the larger particles to the smaller particles be transported. The direction of rotation can also be reversed. Due to the homogenizing effect of the rollers 44, the particle flows 45 to 47 are substantially equal and homogenized.
  • the particle streams 45 to 47 are sequentially scattered to form the lower half 31 of the middle layer.
  • the lower half 31 has a thickness 32.
  • the gaps have individual sizes or groups of different sizes.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Claims (14)

  1. Dispositif (1) pour produire de façon continue ou discontinue un non-tissé (2) à base de particules fibreuses dotées d'un liant, en particulier de copeaux, de taille différente,
    comprenant au moins un dispositif de fractionnement (8) pneumatique pour le fractionnement d'un mélange de départ (3) des particules en un flux particulaire (9) fractionné,
    un tapis de formation (24), sur lequel peut être déposé le flux particulaire (9) fractionné au moyen d'un déplacement relatif (22) entre le tapis de formation (24) et le dispositif (1) de manière à ce qu'il y ait, dans le non-tissé (2) achevé, des particules relativement petites dans une couche de recouvrement (29) inférieure et dans une couche de recouvrement supérieure et des particules relativement grandes dans une couche médiane (31),
    et au moins un groupe de rouleaux (20 ; 43) associé à respectivement une portion (10 ; 11) du flux particulaire (9) fractionné,
    les rouleaux (21 ; 44) de chaque groupe de rouleaux (20 ; 43) étant disposés avec des axes longitudinaux parallèles entre eux et orientés transversalement au déplacement relatif (22) et pouvant être entraînés par rotation,
    caractérisé en ce qu'un premier groupe de rouleaux (20) est disposé sur une première section terminale (10), contenant également les plus petites particules du flux particulaire (9) fractionné,
    en ce qu'une bande transporteuse (18) rotative recevant la première section terminale (10) du flux particulaire (9) fractionné sous forme de mélange de fraction est disposée plus haut que le premier groupe de rouleaux (20),
    en ce que le mélange de fraction peut être chargé par la bande transporteuse (18) sur le premier groupe de rouleaux (20),
    en ce que le premier groupe de rouleaux (20) est conçu comme une unité d'homogénéisation par laquelle le mélange de fraction peut être homogénéisé en fonction de la taille de particule,
    en ce que des entrefers(28) de même taille, formant chacun un flux partiel (25, 26, 27) du mélange de fraction homogénéisé existent entre des rouleaux (21) voisins appartenant au premier groupe de rouleaux (20),
    et en ce que les flux partiels (25, 26, 27) peuvent être dispersés successivement sur le tapis de formation (24) ou sur le non-tissé (2) en formation.
  2. Dispositif selon la revendication 1,
    caractérisé en ce qu'un dispositif de criblage (40) incliné par rapport à l'horizontale et présentant au moins un crible est monté en amont de la bande transporteuse (18),
    et en ce que des particules (42) relativement grandes provenant du flux particulaire (9) fractionné peuvent être retenues par le dispositif de criblage (40).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que les particules (42) retenues et relativement grandes peuvent être déposées, conjointement avec une seconde section terminale (11), contenant également les plus grandes particules du flux particulaire (9) fractionné, sur un second groupe de rouleaux (43).
    en ce que le second groupe de rouleaux (43) est conçu comme unité d'homogénéisation par laquelle les particules chargées peuvent être homogénéisées en fonction de la taille de particule,
    en ce que des entrefers (48) de même taille, formant chacun un flux partiel (45, 46, 47) des particules homogénéisées existent entrent des rouleaux (44) voisins appartenant au second groupe de rouleaux (43),
    et en ce que les flux partiels (45, 46, 47) peuvent être dispersés successivement sur le non-tissé (2) en formation.
  4. Dispositif selon la revendication 2,
    caractérisé en ce que les particules (42) retenues et relativement grandes peuvent être déposées, conjointement avec une seconde section terminale (11), contenant également les plus grandes particules du flux particulaire (9) fractionné, sur un second groupe de rouleaux (43),
    en ce que le second groupe de rouleaux (43) est conçu comme unité d'homogénéisation par laquelle les particules déposées peuvent être homogénéisées en fonction de la taille de la particule,
    en ce que des entrefers (48) de taille différente, formant respectivement un flux partiel (45, 46, 47) des particules homogénéisées existent entre des rouleaux (44) voisins appartenant au second groupe de rouleaux (43),
    et en ce que les flux partiels (45, 46, 47) peuvent être dispersés successivement sur le non-tissé (2) en formation.
  5. Dispositif selon la revendication 3 ou 4,
    caractérisé en ce qu'un dispositif de réception (49) est prévu à une extrémité de transport du second groupe de rouleaux (43) pour les matières grossières (50) qui ne sont pas passées dans les entrefers (48) du second groupe de rouleaux (43).
  6. Dispositif selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que tous les rouleaux (21 ; 44) de chaque groupe de rouleaux (20 ; 43) tournent dans le même sens de rotation.
  7. Dispositif selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que les rouleaux de chaque groupe de rouleaux (20 ; 43) tournent dans différents sens de rotation.
  8. Dispositif selon l'une quelconque des revendications 2 à 7,
    caractérisé en ce que la bande transporteuse (18) est amenée jusqu'à un coté arrière (41) du dispositif de criblage (40).
  9. Dispositif selon l'une quelconque des revendications 2 à 7,
    caractérisé en ce que la bande transporteuse (18) est disposée à une distance (52) horizontale d'un côté arrière (41) du dispositif de criblage (40).
  10. Dispositif selon la revendication 9,
    caractérisé en ce que la distance (52) horizontale est réglable.
  11. Dispositif selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce qu'une longueur effective de la bande transporteuse (18) est variable.
  12. Dispositif (1) pour produire de façon continue ou discontinue un non-tissé (2) à base de particules fibreuses dotées d'un liant, en particulier de copeaux, de grandeur différente,
    comprenant au moins un dispositif de fractionnement (8) pneumatique pour le fractionnement d'un mélange de départ (3) des particules en un flux particulaire (9) fractionné,
    un tapis de formation (24), sur lequel peut être déposé le flux particulaire (9) fractionné au moyen d'un déplacement relatif (22) entre le tapis de formation (24) et le dispositif de fractionnement (8) pneumatique de manière à ce qu'il y ait, dans le non-tissé (2) achevé, des particules relativement petites dans une couche de recouvrement (29) inférieure et dans une couche de recouvrement supérieure et des particules relativement grandes dans une couche médiane (31),
    et au moins un groupe de rouleaux (43) associé à respectivement une portion (10 ; 11) du flux particulaire (9) fractionné,
    les rouleaux (44) de chaque groupe de rouleaux (43) étant disposés avec des axes longitudinaux parallèles entre eux et orientés transversalement au déplacement relatif (22) et pouvant être entraînés par rotation,
    caractérisé en ce que
    le dispositif présente un dispositif de criblage (40) incliné par rapport à l'horizontale qui présente au moins un crible, est monté en aval du dispositif de fractionnement (8) pneumatique et est conçu pour la rétention de particules (42) relativement grandes et prévues pour la fabrication du non-tissé (2) à partir du flux particulaire (9) fractionné,
    en ce que les particules (42) retenues, relativement grandes, prévues pour la fabrication du non-tissé (2) peuvent être déposées, conjointement avec une section terminale (11), contenant également les plus grandes particules du flux particulaire (9) fractionné, sur un second groupe de rouleaux (43).
    en ce que le groupe de rouleaux (43) est conçu comme une unité d'homogénéisation par laquelle les particules chargées peuvent être homogénéisées en fonction de la taille de particule,
    en ce qu'entre des rouleaux voisins (44) du groupe de rouleaux (43) existe un entrefer (48) qui est uniforme dans le sens longitudinal des rouleaux (44) et forme respectivement un flux partiel (45, 46, 47) des particules homogénéisées,
    en ce que les rouleaux (44) du groupe de rouleaux (43) tournent dans le même sens de rotation
    et en ce que les flux partiels (45, 46, 47) peuvent être dispersés successivement sur le non-tissé (2) en formation.
  13. Dispositif selon la revendication 12,
    caractérisé en ce que les entrefers (48) entre des rouleaux (44) voisins sont de taille différente.
  14. Dispositif selon la revendication 13,
    caractérisé en ce que les entrefers (48) entre des rouleaux (44) voisins sont de taille différente individuellement ou par groupes.
EP03706585A 2002-03-02 2003-02-27 Dispositif pour produire un non-tisse Expired - Lifetime EP1480797B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20203427U DE20203427U1 (de) 2002-03-02 2002-03-02 Vorrichtung zur Herstellung eines Vlieses
DE20203427U 2002-03-02
PCT/EP2003/002012 WO2003074243A1 (fr) 2002-03-02 2003-02-27 Dispositif pour produire un non-tisse

Publications (2)

Publication Number Publication Date
EP1480797A1 EP1480797A1 (fr) 2004-12-01
EP1480797B1 true EP1480797B1 (fr) 2010-11-17

Family

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Application Number Title Priority Date Filing Date
EP03706585A Expired - Lifetime EP1480797B1 (fr) 2002-03-02 2003-02-27 Dispositif pour produire un non-tisse

Country Status (5)

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EP (1) EP1480797B1 (fr)
AT (1) ATE488344T1 (fr)
AU (1) AU2003208770A1 (fr)
DE (2) DE20203427U1 (fr)
WO (1) WO2003074243A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016103820U1 (de) 2016-07-14 2017-10-19 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
DE102016113014A1 (de) 2016-07-14 2018-01-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage und Verfahren zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
DE202017106263U1 (de) 2017-10-16 2018-10-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
WO2005110733A2 (fr) * 2004-05-07 2005-11-24 Milliken & Company Blindage anti-chaleur et anti-feu
US7696112B2 (en) 2005-05-17 2010-04-13 Milliken & Company Non-woven material with barrier skin
DE202008011509U1 (de) 2008-08-29 2008-10-30 Binos Gmbh Vorrichtung zur Streuung eines Vlieses
DE102017111134B4 (de) * 2017-05-22 2018-12-27 Dieffenbacher GmbH Maschinen- und Anlagenbau Verfahren und Anlage zur Herstellung einer Spanplatte
DE102017124063A1 (de) 2017-10-16 2019-04-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage und Verfahren zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten

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DE2450685B2 (de) * 1974-10-25 1978-02-23 Carl Schenck Ag, 6100 Darmstadt Streueinrichtung zur herstellung eines vlieses
DE2847109C3 (de) * 1978-10-30 1981-09-17 Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe Vorrichtung zum Streuen eines Vlieses
DE9007603U1 (de) * 1990-06-19 1993-03-04 G. Siempelkamp Gmbh & Co, 4150 Krefeld Anlage zum Streuen von beleimten Spänen im Zuge der Herstellung von Spanplatten
DE4021939A1 (de) * 1990-07-10 1992-01-16 Siempelkamp Gmbh & Co Streuanlage zum streuen von spanplatten-rohmaterial
FI90746C (fi) * 1990-10-30 1994-03-25 Sunds Defibrator Loviisa Oy Laitteisto kuitujen, esimerkiksi lastujen sirottelemiseksi
DE4212017C2 (de) * 1992-04-09 1999-08-19 Kvaerner Panel Sys Gmbh Deckschichtstreuvorrichtung
DE4212001A1 (de) * 1992-04-09 1993-10-14 Baehre & Greten Deckschichtstreuvorrichtung
DE4439653A1 (de) * 1994-11-07 1996-05-09 Baehre & Greten Vorrichtung zum Streuen von beleimten Spänen, Fasern und dergleichen Teilchen
EP0800901B1 (fr) * 1996-04-10 2003-07-02 Dieffenbacher Schenck Panel GmbH Procédé et appareil pour fabriquer un mat
DE19846106A1 (de) * 1998-10-07 2000-04-13 Dieffenbacher Schenck Panel Streustation
DE10011808C1 (de) * 2000-03-10 2001-12-13 Binos Technologies Gmbh & Co K Verfahren und Vorrichtung zur Herstellung eines Vlieses
DE10101380B4 (de) * 2001-01-13 2008-12-24 Dieffenbacher Gmbh + Co. Kg Sichterbeschickungungsstrecke bei Anlagen zur Herstellung von Holzfaserplatten

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016103820U1 (de) 2016-07-14 2017-10-19 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
DE102016113014A1 (de) 2016-07-14 2018-01-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage und Verfahren zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
WO2018011430A1 (fr) 2016-07-14 2018-01-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Système de dispersion et procédés de fabrication d'un mat de matière dispersée au cours de la fabrication de panneaux de matériau
DE202017106263U1 (de) 2017-10-16 2018-10-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten

Also Published As

Publication number Publication date
ATE488344T1 (de) 2010-12-15
EP1480797A1 (fr) 2004-12-01
DE50313267D1 (de) 2010-12-30
AU2003208770A1 (en) 2003-09-16
DE20203427U1 (de) 2003-04-17
WO2003074243A1 (fr) 2003-09-12

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