EP2025788A1 - Device and method for laying non-woven lengths as insulating material - Google Patents

Device and method for laying non-woven lengths as insulating material Download PDF

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Publication number
EP2025788A1
EP2025788A1 EP07013035A EP07013035A EP2025788A1 EP 2025788 A1 EP2025788 A1 EP 2025788A1 EP 07013035 A EP07013035 A EP 07013035A EP 07013035 A EP07013035 A EP 07013035A EP 2025788 A1 EP2025788 A1 EP 2025788A1
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EP
European Patent Office
Prior art keywords
cavity
fibers
nonwoven web
conveyor belt
nonwoven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07013035A
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German (de)
French (fr)
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EP2025788B1 (en
Inventor
Gerhard Huber
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Individual
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Individual
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Priority to EP07013035A priority Critical patent/EP2025788B1/en
Priority to DE502007006423T priority patent/DE502007006423D1/en
Priority to AT07013035T priority patent/ATE497554T1/en
Publication of EP2025788A1 publication Critical patent/EP2025788A1/en
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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
    • D04H1/72—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 the fibres being randomly arranged
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • 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
    • D04H1/72—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 the fibres being randomly arranged
    • D04H1/736—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 the fibres being randomly arranged characterised by the apparatus for arranging fibres

Definitions

  • the invention relates to a device for laying nonwoven webs and a corresponding method for laying nonwoven webs, wherein the nonwoven webs are preferably used as an insulating material.
  • Insulation materials are used in buildings for thermal insulation and / or sound insulation.
  • an insulating material are fibers, especially flakes of cellulose, which are obtained from waste paper.
  • fibers of natural products or fiber mixtures of cellulose fibers and natural fibers such.
  • wood fibers and hemp fibers are used. These fibers may further be incorporated with a fire retardant, a fungicidal agent and an insect repellent, and an adhesive as a binder.
  • the fibers may be scattered or poured. Subsequently, the scattered fibers are smoothed. The compound of the scattered fibers via an adhesive added to the fibers. After the adhesive has hardened, insulating panels are obtained which are suitable for mounting in hollow building walls, ceilings or floors. Alternatively, the insulation panels can be mounted on the outside of walls, ceilings or floors.
  • the device for laying nonwoven webs for insulation boards according to claim 1 comprises a cavity.
  • This cavity has at least one inlet for the pneumatic introduction of fibers, for example cellulose fibers, wood fibers or hemp fibers.
  • the fibers are blown into the cavity.
  • the introduced fibers add to a transverse section of a nonwoven web.
  • a conveyor for continuously feeding out the nonwoven web from the cavity is provided.
  • the fibers are pneumatically introduced into a cavity
  • the fibers can connect in sections to a nonwoven, wherein the nonwoven by the pneumatic introduction and continuous feeding out of the laid nonwoven fabric has a homogeneous structure.
  • pneumatic introduction means an introduction by means of air, for example by blowing in the fibers.
  • the conveying means is a conveyor belt which at least partially delimits the cavity on one side of the cavity, for example on the underside of the cavity.
  • the introduced fibers thus fit on the conveyor belt to a fleece, which is continuously conveyed out of the cavity.
  • the conveyor belt should advantageously have a non-slip surface, so that the fibers can not slip on the conveyor belt.
  • the cavity is limited by two first boundary surfaces, which are arranged on the right and left side of the conveyor belt. These are advantageously aligned parallel to the conveying direction. Further, a second boundary surface may be provided, which is disposed on the side of the cavity, which is opposite to the application side of the cavity. In this case, the application side is the side of the cavity, on which the nonwoven web is conveyed out of the cavity. Finally, a third boundary surface can be provided, which is arranged on the opposite side of the conveyor belt.
  • the cavity is variable in its dimensions, for example in its height, width and / or length.
  • the distance between the two first boundary surfaces is adjustable to each other, so that nonwoven webs of different widths can be produced.
  • the distance between the third boundary surface and the conveyor belt can advantageously be adjusted so that nonwoven webs of different thicknesses can be produced.
  • a closure means for example a slide or a flap, is provided, by means of which the cavity on the application side is selectively opened or closed.
  • the application side is closed by means of the closure means in order to prevent an uncontrolled discharge of material during the subsequent pneumatic introduction of the fibers.
  • these fibers act as a seal of the cavity, so that the closure means can be opened.
  • the portion of the laid nonwoven web immediately adjacent to the application side exits the cavity via the conveying means, whereby nonwoven material for sealing the cavity is continuously tracked via the conveying means.
  • the conveying direction of the conveying means is typically horizontal.
  • a vertical conveying direction or a conveying direction at a certain elevation angle with a vertical component could also be provided, wherein the height increases in the conveying direction or alternatively decreases.
  • a vertical conveying direction or at least one conveying direction with a sufficiently vertical component the homogeneity of the nonwoven structure, in particular on the upper side of the nonwoven structure, can be further increased. Differences in distribution The laid fibers thus do not act directly on the upper side of the nonwoven structure but only on the nonwoven structure in the vertical conveying direction. Furthermore, the influence of gravity, the flaky material is better connected.
  • the inlets can optionally be arranged on each side of the cavity.
  • the cavity has at least two inlets disposed on opposite sides of the cavity, for example an inlet in the boundary surface to the right of the conveyor belt and an inlet in the boundary surface to the left of the conveyor belt.
  • the device further comprises a means for the controlled removal of excess air from the cavity, for example an extraction.
  • a suction advantageously comprises a suction funnel, which is connected via an air line with a blower, which directs the extracted air into the environment.
  • the means for the controlled discharge of excess air can be realized with a single exhaust duct or with a plurality of exhaust ducts.
  • the means should advantageously further comprise a filter for filtering the exhaust air. As a result, the fiber dust is removed from the exhaust air, so that the dust load is reduced. In addition, the filtered dust can then be recycled to the manufacturing process.
  • the fibers advantageously have an adhesive.
  • a device for curing the adhesive is advantageously also provided, for example a furnace.
  • the device for curing the adhesive is advantageously connected to the conveying means directly or via a further conveying means, for example with a second conveyor belt, which has the same conveying speed as the conveying means below the cavity.
  • a further conveying means for example with a second conveyor belt, which has the same conveying speed as the conveying means below the cavity.
  • fibers are continuously pneumatically introduced into a cavity, for example blown in, with the introduced fibers being added to a section of a nonwoven web in the cavity.
  • the nonwoven web is continuously conveyed out of the cavity.
  • Fig. 1 shows an embodiment of the device according to the invention for laying nonwoven webs (hereinafter referred to as fleece laying system) in the front view (the conveyor belt direction points into the plane of the drawing) with a horizontal conveyor belt direction.
  • the fleece laying plant is operated by at least one pneumatic conveying device 1, for example a blowing machine 1, which comprises a loose fiber mixture of cellulose fibers and / or natural fibers (for example wood fibers or hemp fibers), for example with a typical fiber length of 5 mm, which is adhesively bonded, Fire, mold and insect repellent are added, in the inventive fleece plant pneumatically introduces, for example, blows.
  • a blowing machine 1 which comprises a loose fiber mixture of cellulose fibers and / or natural fibers (for example wood fibers or hemp fibers), for example with a typical fiber length of 5 mm, which is adhesively bonded, Fire, mold and insect repellent are added, in the inventive fleece plant pneumatically introduces, for example, blows.
  • a respective pneumatic conveying device 1 for pneumatic insertion on the left side of the cavity 6 and on the right side of the cavity 6 are provided, of which in Fig. 1 only the left pneumatic conveyor 1 is shown. It is true that the larger the width of the laid fleece, the more pneumatic conveyors are required.
  • Each pneumatic conveyor 1 is connected via a conveyor line 2 (in the form of a tube or a hose) with the fleece laying plant.
  • the cavity 6 of in Fig. 1 illustrated embodiment of the nonwoven plant is a cuboid cavity.
  • the cuboid cavity 6 is on the left and right in Fig. 1 bounded by side surfaces 8, in each of which an inlet for introducing the delivery line and pneumatic introduction of the fibers is provided.
  • the inlets could also be arranged on the front side or the top of the cavity 6.
  • a further boundary surface is provided, which in Fig. 1 for reasons of representability of the cavity 6 is not shown.
  • a conveyor 3 Down the entire cavity 6 by a conveyor 3, in particular a conveyor belt 3, limited.
  • two conveyor means (not shown), namely a conveyor at the top of the cavity 6 and a conveyor at the bottom of the cavity 6 may be provided.
  • the cavity 6 can be selectively closed or opened by a start slider 5 with a plate movable up and down via the associated opening and closing mechanism 7.
  • the application side is closed via the starting slide 5 in order to prevent an uncontrolled discharge of material during the subsequent pneumatic introduction, in particular blowing, of the fibers.
  • the start slider 5 is pneumatically pressed onto the conveyor belt 3 to seal the cavity 6, so that a draft is prevented via the application side.
  • the fibers of the laid nonwoven fabric running onto the application side act as a seal, so that the starting slider 5 can be opened.
  • the application side of the cavity 6 is thus sealed by the start slider during operation of the batt laying system and in operation by the laid material.
  • an extraction with a funnel-shaped air cap 4 is provided, which is arranged at the front end of the cavity 6 above the cavity 6.
  • the Excess, introduced air exits from the cavity 6 via a arranged in the front region of the cavity 6 grid (not shown) and is then sucked from the air vent 4.
  • the air cap 4 is connected via an air line with a fan (not shown).
  • the dust is separated from the air by means of one or more filters (not shown) and the filtered air is directed into the environment. The filtered dust can then be returned to the manufacturing process.
  • Fig. 2 shows that in Fig. 1 shown embodiment in side view (from the right side in Fig. 1 from).
  • the cavity 6 extends approximately in the longitudinal direction of the funnel-shaped air cap 4 (the front side wall is in Fig. 2 as in Fig. 1 not shown) to the start slider 5.
  • the inlet (not shown) for the pneumatic conveyor is located approximately 50 cm from the front end of the cavity 6.
  • the cavity is filled only in an area of a certain length in the immediate vicinity of the lateral inlets.
  • At least one viewing window which are embedded in the walls of the cavity, is provided.
  • At the in Fig. 2 illustrated embodiment are located in both side surfaces 8 of the cavity 6 each have a front 9 and a rear 10 viewing window, whereby the manufacturing process can be checked visually.
  • an oven (not shown) is optionally provided, which is connected to the nonwoven laying machine via a further conveying means, in particular conveyor belt, and serves to cure the adhesive added to the fibers.
  • the cavity is about 3 meters long and nominally 2.5 meters wide.
  • the upper boundary surface of the cavity 6 is formed by three adjacent plates. If a smaller width is desired for the nonwoven webs, the two outer panels can be removed and the spacing of the left and right side panels 8 corresponding to the width of the remaining central panel reduced to about 1.25 meters.
  • the distance of the upper boundary surface to the conveyor 3 individually set. This distance corresponds approximately to the thickness of the later insulation board. Here, an adjustment range of 5 to 50 cm is provided.
  • Essential parameters of the fleece laying system are the volume of the cavity 6, the amount of air, the speed of air and the amount of material whose choice influences the homogeneity of the laid fleece. It is true that the larger the volume of the cavity, the greater the amount of air, air velocity and amount of material should be selected to completely fill the cavity. Furthermore, in the case of Fig. 1 and 2 illustrated embodiment, the conveyor belt speed depending on the web height and depending on the necessary duration of curing of the adhesive in the further processing are continuously adjusted.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Insulating Bodies (AREA)

Abstract

Machine for laying fibers to produce insulating panels has a chamber (6), into which the fibers are blown. The base of this is formed by a conveyor belt (3), across which adjustable partitions are fitted at either end. The sides of the chamber are formed by two more adjustable walls (8). An independent claim is included for a method for laying fibers to produce insulating panels using the machine.

Description

Die Erfindung betrifft eine Vorrichtung zum Legen von Vliesbahnen und ein entsprechendes Verfahren zum Legen von Vliesbahnen, wobei die Vliesbahnen vorzugsweise als Dämmstoff Verwendung finden.The invention relates to a device for laying nonwoven webs and a corresponding method for laying nonwoven webs, wherein the nonwoven webs are preferably used as an insulating material.

Dämmstoffe werden in Gebäuden zur Wärmedämmung und/oder Schalldämmung eingesetzt. Als Dämmstoff eignen sich Fasern, insbesondere Flocken, aus Zellulose, welche aus Altpapier gewonnen werden. Ferner können Fasern aus Naturstoffen oder Fasergemische aus Zellulosefasern und Naturfasern, wie z. B. Holzfasern und Hanffasern, verwendet werden. Diesen Fasern kann ferner ein Brandschutzmittel, ein Fungizidmittel und ein Insektenschutzmittel sowie ein Klebstoff als Bindemittel beigesetzt werden.Insulation materials are used in buildings for thermal insulation and / or sound insulation. As an insulating material are fibers, especially flakes of cellulose, which are obtained from waste paper. Furthermore, fibers of natural products or fiber mixtures of cellulose fibers and natural fibers such. As wood fibers and hemp fibers are used. These fibers may further be incorporated with a fire retardant, a fungicidal agent and an insect repellent, and an adhesive as a binder.

Zur Herstellung von Dämmstoffplatten aus derartigen Fasern können die Fasern gestreut oder geschüttet werden. Anschließend werden die gestreuten Fasern glatt gestrichen. Die Verbindung der gestreuten Fasern erfolgt über einen den Fasern beigemengten Klebstoff. Nach Aushärten des Klebstoffs werden so Dämmstoffplatten erhalten, die sich zur Montage in Gebäude-Hohlwänden, -decken oder - böden eignen. Alternativ können die Dämmstoffplatten außen an Wänden, Decken oder Böden angebracht werden.To produce insulating panels of such fibers, the fibers may be scattered or poured. Subsequently, the scattered fibers are smoothed. The compound of the scattered fibers via an adhesive added to the fibers. After the adhesive has hardened, insulating panels are obtained which are suitable for mounting in hollow building walls, ceilings or floors. Alternatively, the insulation panels can be mounted on the outside of walls, ceilings or floors.

Derartige Dämmstoffplatten weisen jedoch den Nachteil auf, dass deren Struktur aufgrund des Streuens der Fasern eine mangelnde Homogenität aufweist, so dass der Dämmschutz nicht gleichmäßig ist.However, such insulating panels have the disadvantage that their structure due to the scattering of the fibers has a lack of homogeneity, so that the insulation is not uniform.

Ferner ist es bekannt, derartige Fasern in Hohlwände, -decken oder -böden von Gebäuden pneumatisch einzubringen, insbesondere mittels eines Einblaseverfahrens. Zum pneumatischen Einbringen der Fasern werden spezielle pneumatische Fördereinrichtungen verwendet, insbesondere Blasmaschinen. Die Struktur des eingeblasenen Dämmstoffs weist dabei eine hohe Homogenität aufFurthermore, it is known to introduce such fibers pneumatically in hollow walls, ceilings or floors of buildings, in particular by means of a Einblaseverfahrens. For pneumatic introduction of the fibers special pneumatic conveyors are used, in particular blow molding machines. The structure of the injected insulating material has a high homogeneity

Es ist daher Aufgabe der Erfindung, eine Vorrichtung zum Verarbeiten derartiger Fasern zu Dämmstoffplatten anzugeben, die die bekannten Nachteile gestreuter Dämmstoffplatten ausräumt, wobei eine kostengünstige Herstellung der Dämmstoffplatten angestrebt wird. Ferner ist es Aufgabe der Erfindung, ein entsprechendes Herstellungsverfahren anzugeben.It is therefore an object of the invention to provide an apparatus for processing such fibers to insulation boards, which eliminates the known disadvantages scattered insulation boards, with a cost-effective production of the insulation boards is sought. It is another object of the invention to provide a corresponding manufacturing method.

Die der Erfindung zugrunde liegenden Aufgabenstellungen werden durch die Merkmale der unabhängigen Ansprüche gelöst.The objects underlying the invention are achieved by the features of the independent claims.

Die Vorrichtung zum Legen von Vliesbahnen für Dämmstoffplatten gemäß Anspruch 1 umfasst einen Hohlraum. Dieser Hohlraum weist zumindest einen Einlass zum pneumatischen Einbringen von Fasern, beispielsweise Zellulosefasern, Holzfasern oder Hanffasern auf. Vorteilhafterweise werden die Fasern in den Hohlraum eingeblasen. In dem Hohlraum fügen sich die eingebrachten Fasern zu einem Querabschnitt einer Vliesbahn. Ferner ist ein Fördermittel zum kontinuierlichen Herausfördern der Vliesbahn aus dem Hohlraum vorgesehen.The device for laying nonwoven webs for insulation boards according to claim 1 comprises a cavity. This cavity has at least one inlet for the pneumatic introduction of fibers, for example cellulose fibers, wood fibers or hemp fibers. Advantageously, the fibers are blown into the cavity. In the cavity, the introduced fibers add to a transverse section of a nonwoven web. Further, a conveyor for continuously feeding out the nonwoven web from the cavity is provided.

Dadurch, dass die Fasern in einen Hohlraum pneumatisch eingebracht werden, können sich die Fasern abschnittsweise zu einem Vlies verbinden, wobei das Vlies durch das pneumatische Einbringen und kontinuierliche Herausfördern des gelegten Vlieses eine homogene Struktur aufweist.Characterized in that the fibers are pneumatically introduced into a cavity, the fibers can connect in sections to a nonwoven, wherein the nonwoven by the pneumatic introduction and continuous feeding out of the laid nonwoven fabric has a homogeneous structure.

Hierbei ist im Sinne der Anmeldung unter dem Begriff "pneumatisches Einbringen" ein Einbringen mittels Luft zu verstehen, beispielsweise durch Einblasen der Fasern.Here, for the purposes of the application, the term "pneumatic introduction" means an introduction by means of air, for example by blowing in the fibers.

Vorteilhafterweise handelt es sich bei dem Fördermittel um ein Förderband, welches den Hohlraum auf einer Seite des Hohlraums, beispielsweise auf der Unterseite des Hohlraums zumindest teilweise begrenzt. Die eingebrachten Fasern fügen sich somit auf dem Förderband zu einem Vlies, welches kontinuierlich aus dem Hohlraum herausgefördert wird. Dabei sollte das Förderband vorteilhafterweise eine rutschfeste Oberfläche aufweisen, so dass die Fasern auf dem Förderband nicht rutschen können.Advantageously, the conveying means is a conveyor belt which at least partially delimits the cavity on one side of the cavity, for example on the underside of the cavity. The introduced fibers thus fit on the conveyor belt to a fleece, which is continuously conveyed out of the cavity. In this case, the conveyor belt should advantageously have a non-slip surface, so that the fibers can not slip on the conveyor belt.

Dabei ist es von Vorteil, wenn der der Hohlraum durch zwei erste Begrenzungsflächen begrenzt wird, welche auf der rechten und linken Seite des Förderbands angeordnet sind. Diese sind vorteilhafterweise parallel zur Förderrichtung ausgerichtet. Ferner kann eine zweite Begrenzungsfläche vorgesehen werden, welche auf derjenigen Seite des Hohlraums angeordnet ist, welche der Ausbringungsseite des Hohlraums gegenüberliegt. Dabei ist die Ausbringungsseite die Seite des Hohlraums, auf der die Vliesbahn aus dem Hohlraum herausgefördert wird. Schließlich kann eine dritte Begrenzungsfläche vorgesehen werden, welche auf der dem Förderband gegenüberliegenden Seite angeordnet ist.It is advantageous if the cavity is limited by two first boundary surfaces, which are arranged on the right and left side of the conveyor belt. These are advantageously aligned parallel to the conveying direction. Further, a second boundary surface may be provided, which is disposed on the side of the cavity, which is opposite to the application side of the cavity. In this case, the application side is the side of the cavity, on which the nonwoven web is conveyed out of the cavity. Finally, a third boundary surface can be provided, which is arranged on the opposite side of the conveyor belt.

Vorteilhafterweise ist der Hohlraum in seinen Abmessungen veränderbar, beispielsweise in seiner Höhe, Breite und/oder Länge. Dabei ist vorteilhafterweise der Abstand der beiden ersten Begrenzungsflächen zueinander einstellbar, so dass Vliesbahnen verschiedener Breiten hergestellt werden können.Advantageously, the cavity is variable in its dimensions, for example in its height, width and / or length. In this case, advantageously, the distance between the two first boundary surfaces is adjustable to each other, so that nonwoven webs of different widths can be produced.

Analog lässt sich vorteilhafterweise der Abstand der dritten Begrenzungsfläche zum Förderband einstellen, so dass Vliesbahnen verschiedener Dicken hergestellt werden können.Analogously, the distance between the third boundary surface and the conveyor belt can advantageously be adjusted so that nonwoven webs of different thicknesses can be produced.

Gemäß einer vorteilhaften Ausführungsform ist ein Verschlussmittel, beispielsweise ein Schieber oder eine Klappe, vorgesehen, mittels welchem der Hohlraum auf der Ausbringungsseite wahlweise geöffnet oder geschlossen wird. Vor dem pneumatischen Einbringen der Fasern wird mittels des Verschlussmittels die Ausbringungsseite geschlossen, um einen unkontrollierten Materialaustritt beim anschließenden pneumatischen Einbringen der Fasern zu verhindern. Nachdem der Hohlraum im Bereich der Ausbringungsseite bereits ausreichend mit gelegten Fasern gefüllt ist, wirken diese Fasern als Abdichtung des Hohlraums, so dass das Verschlussmittel geöffnet werden kann. Nach dem Öffnen verlässt der direkt an der Ausbringungsseite angrenzende Abschnitt der gelegten Vliesbahn den Hohlraum über das Fördermittel, wobei über das Fördermittel Vliesmaterial zum Abdichten des Hohlraums kontinuierlich nachgeführt wird.According to an advantageous embodiment, a closure means, for example a slide or a flap, is provided, by means of which the cavity on the application side is selectively opened or closed. Before the pneumatic introduction of the fibers, the application side is closed by means of the closure means in order to prevent an uncontrolled discharge of material during the subsequent pneumatic introduction of the fibers. After the cavity in the region of the application side is already sufficiently filled with laid fibers, these fibers act as a seal of the cavity, so that the closure means can be opened. After opening, the portion of the laid nonwoven web immediately adjacent to the application side exits the cavity via the conveying means, whereby nonwoven material for sealing the cavity is continuously tracked via the conveying means.

Die Förderrichtung des Fördermittels ist typischerweise horizontal. Alternativ könnte auch eine vertikale Förderrichtung oder eine Förderrichtung unter einem bestimmten Höhenwinkel mit einer vertikalen Komponente vorgesehen sein, wobei die Höhe in Förderrichtung zunimmt oder alternativ abnimmt|. Durch eine vertikale Förderrichtung oder zumindest eine Förderrichtung mit einer ausreichend vertikalen Komponente kann die Homogenität der Vliesstruktur, insbesondere an der Oberseite der Vliesstruktur, weiter erhöht werden. Unterschiede in der Verteilung der gelegten Fasern wirken sich so nicht direkt auf die Oberseite der Vliesstruktur aus, sondern lediglich auf die Vliesstruktur in der vertikalen Förderrichtung. Ferner wird durch den Einfluss der Gravitation das flockige Material besser verbunden.The conveying direction of the conveying means is typically horizontal. Alternatively, a vertical conveying direction or a conveying direction at a certain elevation angle with a vertical component could also be provided, wherein the height increases in the conveying direction or alternatively decreases. By a vertical conveying direction or at least one conveying direction with a sufficiently vertical component, the homogeneity of the nonwoven structure, in particular on the upper side of the nonwoven structure, can be further increased. Differences in distribution The laid fibers thus do not act directly on the upper side of the nonwoven structure but only on the nonwoven structure in the vertical conveying direction. Furthermore, the influence of gravity, the flaky material is better connected.

Grundsätzlich können die Einlässe wahlweise auf jeder Seite des Hohlraums angeordnet werden. Vorteilhafterweise weist der Hohlraum jedoch zumindest zwei auf gegenüberliegenden Seiten des Hohlraums angeordnete Einlässe auf, beispielsweise einen Einlass in der Begrenzungsfläche rechts vom Förderband und einen Einlass in der Begrenzungsfläche links vom Förderband. Durch pneumatisches Einbringen, insbesondere durch Einblasen, der Fasern über zwei gegenüberliegende Einlässe prallen die Fasern im Hohlraum direkt aufeinander und können sich so miteinander verkeilen, so dass die Fasern aneinander haften.In principle, the inlets can optionally be arranged on each side of the cavity. Advantageously, however, the cavity has at least two inlets disposed on opposite sides of the cavity, for example an inlet in the boundary surface to the right of the conveyor belt and an inlet in the boundary surface to the left of the conveyor belt. By pneumatic introduction, in particular by blowing the fibers over two opposing inlets, the fibers in the cavity collide directly and can thus wedge together, so that the fibers adhere to each other.

Gemäß einer vorteilhaften Ausführungsform weist die Vorrichtung ferner ein Mittel zum kontrollierten Abführen überschüssiger Luft aus dem Hohlraum auf, beispielsweise eine Absaugung. Eine derartige Absaugung umfasst vorteilhafterweise einen Absaugetrichter, der über eine Luftleitung mit einem Gebläse verbunden ist, welches die abgesaugte Luft in die Umgebung leitet. Das Mittel zum kontrollierten Abführen überschüssiger Luft kann mit einem einzelnen Abluftkanal oder mit einer Mehrzahl von Abluftkanälen realisiert werden. Das Mittel sollte vorteilhafterweise ferner ein Filter zum Filtern der Abluft aufweisen. Hierdurch wird der Faserstaub aus der Abluft entfernt, so dass die Staubbelastung reduziert wird. Außerdern kann der gefilterte Staub anschließend dem Herstellungsprozess wieder zugeführt werden.According to an advantageous embodiment, the device further comprises a means for the controlled removal of excess air from the cavity, for example an extraction. Such a suction advantageously comprises a suction funnel, which is connected via an air line with a blower, which directs the extracted air into the environment. The means for the controlled discharge of excess air can be realized with a single exhaust duct or with a plurality of exhaust ducts. The means should advantageously further comprise a filter for filtering the exhaust air. As a result, the fiber dust is removed from the exhaust air, so that the dust load is reduced. In addition, the filtered dust can then be recycled to the manufacturing process.

Wie vorstehend bereits ausgeführt, weisen die Fasern vorteilhafterweise einen Klebstoff auf. Zum Aushärten des Klebstoffs ist vorteilhafterweise ferner eine Vorrichtung zum Aushärten des Klebstoffs vorgesehen, beispielsweise ein Ofen.As already stated above, the fibers advantageously have an adhesive. For curing the adhesive, a device for curing the adhesive is advantageously also provided, for example a furnace.

Die Vorrichtung zum Aushärten des Klebstoffs ist vorteilhafterweise mit dem Fördermittel direkt oder über ein weiteres Fördermittel verbunden, beispielsweise mit einem zweiten Förderband, welches dieselbe Fördergeschwindigkeit wie das Fördermittel unter dem Hohlraum aufweist. Nach Aushärten des Klebstoffs werden fertige Dämmstoffplatten erhalten, die anschließend in der Länge zugeschnitten werden können. Dabei sind im Sinne der Anmeldung unter dem Begriff "Dämmstoffplatten" nicht nur steife Platten, sondern auch flexible Platten oder gar bewegliche Platten (insbesondere, wenn auf Klebstoff verzichtet wird) zu verstehen. Die Steifigkeit der Platten hängt dabei unter anderem von der Fasermenge, der Plattendicke und dem verwendeten Klebstoff ab.The device for curing the adhesive is advantageously connected to the conveying means directly or via a further conveying means, for example with a second conveyor belt, which has the same conveying speed as the conveying means below the cavity. After curing of the adhesive finished insulation panels are obtained, which can then be cut in length. For the purposes of the application, the term "insulating panels" is to be understood as meaning not only rigid panels but also flexible panels or even movable panels (in particular if adhesive is dispensed with). The stiffness of the plates depends, among other things, on the amount of fiber, the plate thickness and the adhesive used.

Bei dem erfindungsgemäßen Verfahren zum Legen von Vliesbahnen, insbesondere zur Herstellung von Dämmstoffplatten gemäß Anspruch 16 werden kontinuierlich Fasern in einen Hohlraum pneumatisch eingebracht, beispielsweise eingeblasen, wobei sich in dem Hohlraum die eingebrachten Fasern zu einem Abschnitt einer Vliesbahn fügen. Dabei wird die Vliesbahn kontinuierlich aus dem Hohlraum herausgefördert.In the method according to the invention for laying nonwoven webs, in particular for the production of insulating boards according to claim 16, fibers are continuously pneumatically introduced into a cavity, for example blown in, with the introduced fibers being added to a section of a nonwoven web in the cavity. The nonwoven web is continuously conveyed out of the cavity.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous embodiments of the invention are specified in the subclaims.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen näher erläutert; in diesen zeigen:

Fig. 1
ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zum Legen von Vliesbahnen in der Vorderansicht (die Förderbandrichtung zeigt in die Zeichnungsebene hinein); und
Fig. 2
das in Fig. 1 dargestellte Ausführungsbeispiel in der Seitenansicht.
The invention will be explained in more detail below with reference to an embodiment with reference to the drawings; in these show:
Fig. 1
an embodiment of the device according to the invention for laying nonwoven webs in the front view (the conveyor belt direction points into the plane of the drawing); and
Fig. 2
this in Fig. 1 illustrated embodiment in side view.

Fig. 1 zeigt ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zum Legen von Vliesbahnen (nachfolgend als Vlieslegeanlage bezeichnet) in der Vorderansicht (die Förderbandrichtung zeigt in die Zeichnungsebene hinein) mit horizontaler Förderbandrichtung. Die Vlieslegeanlage wird von mindestens einer pneumatischen Fördereinrichtung 1, beispielsweise eine Verblasemaschine 1, betrieben, die einen loses Fasergemisch aus Zellulosefasern und/oder Naturfasern (z. B. Holzfasern oder Hanffasern), beispielsweise mit einer typischen Faserlänge von 5 mm, welche mit Klebestoff, Brand-, Schimmel- und Insektenschutz versetzt sind, in die erfindungsgemäße Vlieslegeanlage pneumatisch einbringt, beispielsweise einbläst. Fig. 1 shows an embodiment of the device according to the invention for laying nonwoven webs (hereinafter referred to as fleece laying system) in the front view (the conveyor belt direction points into the plane of the drawing) with a horizontal conveyor belt direction. The fleece laying plant is operated by at least one pneumatic conveying device 1, for example a blowing machine 1, which comprises a loose fiber mixture of cellulose fibers and / or natural fibers (for example wood fibers or hemp fibers), for example with a typical fiber length of 5 mm, which is adhesively bonded, Fire, mold and insect repellent are added, in the inventive fleece plant pneumatically introduces, for example, blows.

Vorteilhafterweise werden je eine pneumatische Fördereinrichtung 1 zum pneumatische Einbringen auf der linken Seite des Hohlraums 6 und auf der rechten Seite des Hohlraums 6 vorgesehen, von denen in Fig. 1 lediglich die linke pneumatische Fördereinrichtung 1 dargestellt ist. Dabei gilt, dass je größer die Breite des gelegten Vlieses ist, desto mehr pneumatische Fördereinrichtungen sind erforderlich. Jede pneumatische Fördereinrichtung 1 wird über eine Förderleitung 2 (in Form eines Rohres oder eines Schlauches) mit der Vlieslegeanlage verbunden.Advantageously, a respective pneumatic conveying device 1 for pneumatic insertion on the left side of the cavity 6 and on the right side of the cavity 6 are provided, of which in Fig. 1 only the left pneumatic conveyor 1 is shown. It is true that the larger the width of the laid fleece, the more pneumatic conveyors are required. Each pneumatic conveyor 1 is connected via a conveyor line 2 (in the form of a tube or a hose) with the fleece laying plant.

Bei dem Hohlraum 6 des in Fig. 1 dargestellten Ausführungsbeispiels der Vlieslegeanlage handelt es sich um einen quaderförmigen Hohlraum. Der quaderförmige Hohlraum 6 wird auf der linken und rechten Seite in Fig. 1 durch Seitenflächen 8 begrenzt, in denen jeweils ein Einlass zum Einführen der Förderleitung und pneumatischen Einbringen der Fasern vorgesehen ist. Alternativ könnten die Einlässe auch auf der vorderen Seite oder der Oberseite des Hohlraums 6 angeordnet werden.In the cavity 6 of in Fig. 1 illustrated embodiment of the nonwoven plant is a cuboid cavity. The cuboid cavity 6 is on the left and right in Fig. 1 bounded by side surfaces 8, in each of which an inlet for introducing the delivery line and pneumatic introduction of the fibers is provided. Alternatively, the inlets could also be arranged on the front side or the top of the cavity 6.

Nach vorne, d. h. auf der dem Betrachter näher liegenden Seite der Vliesanlage, ist eine weitere Begrenzungsfläche vorgesehen, die in Fig. 1 aus Gründen der Darstellbarkeit des Hohlraums 6 nicht eingezeichnet ist. Nach unten wird der gesamte Hohlraum 6 durch ein Fördermittel 3, insbesondere ein Förderband 3, begrenzt. Alternativ könnten jedoch auch zwei Fördermittel (nicht dargestellt), nämlich ein Fördermittel an der Oberseite des Hohlraums 6 und ein Fördermittel an der Unterseite des Hohlraums 6 vorgesehen werden.To the front, ie on the closer to the viewer side of the nonwoven system, a further boundary surface is provided, which in Fig. 1 for reasons of representability of the cavity 6 is not shown. Down the entire cavity 6 by a conveyor 3, in particular a conveyor belt 3, limited. Alternatively, however, two conveyor means (not shown), namely a conveyor at the top of the cavity 6 and a conveyor at the bottom of the cavity 6 may be provided.

Somit sind von den sechs Seiten des quaderförmigen Hohlraums 6 fünf Seiten geschlossen. Lediglich nach hinten, d. h. auf der Ausbringungsseite, auf der die Vliesbahn aus dem Hohlraum 6 über das Fördermittel 3 herausgefördert wird, kann der Hohlraum 6 durch einen Startschieber 5 mit einer nach oben und unten verschiebbaren Platte über die zugehörige Öffnungs- und Schließmechanik 7 wahlweise geschlossen oder geöffnet werden. Dabei wird beim Starten der Vlieslegeanlage die Ausbringungsseite über den Startschieber 5 geschlossen, um einen unkontrollierten Materialaustritt beim anschließenden pneumatischen Einbringen, insbesondere Einblasen, der Fasern zu verhindern. Dazu wird der Startschieber 5 pneumatisch auf das Förderband 3 gedrückt, um den Hohlraum 6 abzudichten, so dass ein Luftzug über die Ausbringungsseite unterbunden wird.Thus, of the six sides of the cuboid cavity 6, five sides are closed. Only to the rear, d. H. on the output side, on which the nonwoven web is conveyed out of the cavity 6 via the conveyor 3, the cavity 6 can be selectively closed or opened by a start slider 5 with a plate movable up and down via the associated opening and closing mechanism 7. In this case, when starting the fleece laying plant, the application side is closed via the starting slide 5 in order to prevent an uncontrolled discharge of material during the subsequent pneumatic introduction, in particular blowing, of the fibers. For this purpose, the start slider 5 is pneumatically pressed onto the conveyor belt 3 to seal the cavity 6, so that a draft is prevented via the application side.

Nachdem der Hohlraum 6 im Bereich der Ausbringungsseite bereits ausreichend mit gelegten Fasern gefüllt ist, wirken die auf die Ausbringungsseite zulaufenden Fasern des gelegten Vlieses als Abdichtung, so dass der Startschieber 5 geöffnet werden kann. Die Ausbringungsseite des Hohlraums 6 wird somit beim Start der Vlieslegeanlage durch den Startschieber und im Betrieb durch das gelegte Material abgedichtet.After the cavity 6 has already been sufficiently filled with laid fibers in the area of the application side, the fibers of the laid nonwoven fabric running onto the application side act as a seal, so that the starting slider 5 can be opened. The application side of the cavity 6 is thus sealed by the start slider during operation of the batt laying system and in operation by the laid material.

Ferner ist eine Absaugung mit einer trichterförmigen Lufthaube 4 vorgesehen, die am vorderen Ende des Hohlraums 6 oberhalb des Hohlraums 6 angeordnet ist. Die überschüssige, eingebrachte Luft tritt aus dem Hohlraum 6 über ein im vorderen Bereich des Hohlraums 6 angeordnetes Gitter (nicht dargestellt) aus und wird dann von der Lufthaube 4 abgesaugt. Die Lufthaube 4 ist über eine Luftleitung mit einem Gebläse (nicht dargestellt) verbunden. Die Staub wird von der Luft mittels eines oder mehrerer Filter (nicht dargestellt) getrennt und die gefilterte Luft in die Umgebung geleitet. Der gefilterte Staub kann anschließend dem Herstellungsprozess wieder zugeführt werden.Further, an extraction with a funnel-shaped air cap 4 is provided, which is arranged at the front end of the cavity 6 above the cavity 6. The Excess, introduced air exits from the cavity 6 via a arranged in the front region of the cavity 6 grid (not shown) and is then sucked from the air vent 4. The air cap 4 is connected via an air line with a fan (not shown). The dust is separated from the air by means of one or more filters (not shown) and the filtered air is directed into the environment. The filtered dust can then be returned to the manufacturing process.

Fig. 2 zeigt das in Fig. 1 gezeigte Ausführungsbeispiel in der Seitenansicht (von der rechten Seite in Fig. 1 aus betrachtet). Dabei erstreckt sich der Hohlraum 6 in Längsrichtung ungefähr von der trichterförmigen Lufthaube 4 (die vordere Seitenwand ist in Fig. 2 wie in Fig. 1 nicht dargestellt) bis zum Startschieber 5. Der Einlass (nicht dargestellt) für die pneumatische Fördereinrichtung ist ungefähr 50 cm von dem vorderen Ende des Hohlraums 6 entfernt. Der Hohlraum wird nur in einem Bereich mit einer gewissen Länge in direkter Nähe der seitlichen Einlässe vollgefüllt. Fig. 2 shows that in Fig. 1 shown embodiment in side view (from the right side in Fig. 1 from). In this case, the cavity 6 extends approximately in the longitudinal direction of the funnel-shaped air cap 4 (the front side wall is in Fig. 2 as in Fig. 1 not shown) to the start slider 5. The inlet (not shown) for the pneumatic conveyor is located approximately 50 cm from the front end of the cavity 6. The cavity is filled only in an area of a certain length in the immediate vicinity of the lateral inlets.

Ferner ist zumindest ein Sichtfenster, das in die Wände des Hohlraums eingelassen sind, vorgesehen. Bei dem in Fig. 2 dargestellten Ausführungsbeispiel befinden sich in beiden Seitenflächen 8 des Hohlraums 6 jeweils ein vorderes 9 und ein hinteres 10 Sichtfenster, wodurch der Herstellungsprozess visuell überprüft werden kann.Furthermore, at least one viewing window, which are embedded in the walls of the cavity, is provided. At the in Fig. 2 illustrated embodiment are located in both side surfaces 8 of the cavity 6 each have a front 9 and a rear 10 viewing window, whereby the manufacturing process can be checked visually.

Ausgangsseitig der eigentlichen Vlieslegemaschine ist optional ein Ofen (nicht dargestellt) vorgesehen, welcher mit der Vlieslegemaschine über ein weitere Fördermittel, insbesondere Förderband, verbunden ist und der Aushärtung des den Fasern beigemengten Klebstoffs dient.On the output side of the actual nonwoven laying machine, an oven (not shown) is optionally provided, which is connected to the nonwoven laying machine via a further conveying means, in particular conveyor belt, and serves to cure the adhesive added to the fibers.

Bei dem in Fig. 1 und Fig. 2 dargestellten Ausführungsbeispiel der Vlieslegemaschine ist der Hohlraum ungefähr 3 Meter lang sowie nominell 2,5 Meter breit. Die obere Begrenzungsfläche des Hohlraums 6 wird durch drei nebeneinander liegende Platten gebildet. Falls für die Vliesbahnen eine geringere Breite gewünscht wird, können die beiden äußeren Platten entfernt sowie der Abstand der linken und rechten Seitenplatte 8 entsprechend der Breite der verbliebenen mittleren Platte auf ungefähr 1,25 Meter verringert werden. Ferner lässt sich bei dem in Fig. 1 und 2 dargestellten Ausführungsbeispiel der Abstand der oberen Begrenzungsfläche zu dem Fördermittel 3 individuell einstellen. Dieser Abstand entspricht in etwa der Dicke der späteren Dämmstoffplatte. Hierbei ist ein Verstellbereich von 5 bis 50 cm vorgesehen.At the in Fig. 1 and Fig. 2 illustrated embodiment of the web laying machine, the cavity is about 3 meters long and nominally 2.5 meters wide. The upper boundary surface of the cavity 6 is formed by three adjacent plates. If a smaller width is desired for the nonwoven webs, the two outer panels can be removed and the spacing of the left and right side panels 8 corresponding to the width of the remaining central panel reduced to about 1.25 meters. Furthermore, the in Fig. 1 and 2 illustrated embodiment, the distance of the upper boundary surface to the conveyor 3 individually set. This distance corresponds approximately to the thickness of the later insulation board. Here, an adjustment range of 5 to 50 cm is provided.

Wesentliche Parameter der Vlieslegeanlage sind das Volumen des Hohlraums 6, die Luftmenge, die Luftgeschwindigkeit und die Materialmenge, deren Wahl die Homogenität des gelegten Vlieses beeinflusst. Dabei gilt, dass je größer das Volumen des Hohlraums ist, desto größer sollte die Luftmenge, Luftgeschwindigkeit und Materialmenge gewählt werden, um den Hohlraum vollständig zu füllen. Ferner kann bei dem in Fig. 1 und 2 dargestellten Ausführungsbeispiel die Förderbandgeschwindigkeit in Abhängigkeit der Vlieshöhe und in Abhängigkeit der notwendigen Dauer der Aushärtung des Klebers bei der Weiterverarbeitung stufenlos eingestellt werden.Essential parameters of the fleece laying system are the volume of the cavity 6, the amount of air, the speed of air and the amount of material whose choice influences the homogeneity of the laid fleece. It is true that the larger the volume of the cavity, the greater the amount of air, air velocity and amount of material should be selected to completely fill the cavity. Furthermore, in the case of Fig. 1 and 2 illustrated embodiment, the conveyor belt speed depending on the web height and depending on the necessary duration of curing of the adhesive in the further processing are continuously adjusted.

Claims (22)

Vorrichtung zum Legen von Vliesbahnen, umfassend - einen Hohlraum (6), wobei der Hohlraum (6) zumindest einen Einlass zum pneumatischen Einbringen von Fasern aufweist und der Hohlraum (6) derart ausgestaltet ist, dass sich in dem Hohlraum (6) die eingebrachten Fasern zu einem Abschnitt einer Vliesbahn fügen, und - ein Fördermittel (3) zum kontinuierlichen Herausfördern der Vliesbahn aus dem Hohlraum (6). Apparatus for laying nonwoven webs comprising a cavity (6), wherein the cavity (6) has at least one inlet for the pneumatic introduction of fibers and the cavity (6) is designed such that in the cavity (6) the introduced fibers are added to a section of a nonwoven web, and - A conveyor (3) for continuously feeding out the nonwoven web from the cavity (6). Vorrichtung nach Anspruch 1, wobei der Einlass zum pneumatischen Einbringen von Fasern ein Einlass zum Einblasen von Fasern ist.The apparatus of claim 1, wherein the inlet for pneumatically introducing fibers is an inlet for injecting fibers. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei das Fördermittel (3) ein Förderband (3) ist, welches den Hohlraum (6) auf einer Seite des Hohlraums (6) begrenzt.Device according to one of the preceding claims, wherein the conveying means (3) is a conveyor belt (3) which limits the cavity (6) on one side of the cavity (6). Vorrichtung nach Anspruch 3, wobei der Hohlraum (6) - durch zwei erste Begrenzungsflächen (8), welche auf der rechten und linken Seite des Förderbands (3) angeordnet sind, - durch eine zweite Begrenzungsfläche, welche auf derjenigen Seite des Hohlraums (6) angeordnet ist, welche der Ausbringungsseite des Hohlraums (6) gegenüberliegt, auf der die Vliesbahn aus dem Hohlraum (6) herausgefördert wird, und - durch eine dritte Begrenzungsfläche, welche auf der dem Förderband (3) gegenüberliegenden Seite angeordnet ist, begrenzt wird. Device according to claim 3, wherein the cavity (6) - By two first boundary surfaces (8) which are arranged on the right and left sides of the conveyor belt (3), - By a second boundary surface, which is arranged on that side of the cavity (6) which is opposite to the application side of the cavity (6) on which the nonwoven web is conveyed out of the cavity (6), and - By a third boundary surface, which is arranged on the conveyor belt (3) opposite side is limited. Vorrichtung nach Anspruch 4, wobei der Abstand der beiden ersten Begrenzungsflächen zueinander einstellbar ist.Apparatus according to claim 4, wherein the distance between the two first boundary surfaces is adjustable to each other. Vorrichtung nach Anspruch 4 oder 5, wobei der Abstand der dritten Begrenzungsfläche zum Förderband (3) einstellbar ist.Apparatus according to claim 4 or 5, wherein the distance of the third boundary surface to the conveyor belt (3) is adjustable. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei der Hohlraum (6) auf der Ausbringungsseite, auf der die Vliesbahn aus dem Hohlraum (6) herausgefördert wird, mittels eines Verschlussmittels (5) wahlweise geöffnet oder geschlossen werden kann.Device according to one of the preceding claims, wherein the cavity (6) on the application side, on which the nonwoven web is conveyed out of the cavity (6), can be selectively opened or closed by means of a closure means (5). Vorrichtung nach Anspruch 7, wobei das Verschlussmittel (5) ein Schieber oder eine Klappe ist.Apparatus according to claim 7, wherein the closure means (5) is a slider or a flap. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei die Förderrichtung des Fördermittels (3) horizontal ist.Device according to one of the preceding claims, wherein the conveying direction of the conveying means (3) is horizontal. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei die Förderrichtung des Fördermittels (3) vertikal ist oder zumindest eine vertikale Komponente aufweist.Device according to one of the preceding claims, wherein the conveying direction of the conveying means (3) is vertical or at least has a vertical component. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei der Hohlraum (6) zumindest zwei auf gegenüberliegenden Seiten (8) des Hohlraums (6) angeordnete Einlässe aufweist.Device according to one of the preceding claims, wherein the cavity (6) has at least two inlets arranged on opposite sides (8) of the cavity (6). Vorrichtung nach auf Anspruch 4 rückbezogenem Anspruch 11, wobei die zwei Einlässe in den ersten Begrenzungsflächen (8) angeordnet sind.Apparatus according to claim 4, appended to claim 4, wherein the two inlets are arranged in the first boundary surfaces (8). Vorrichtung nach einem der vorhergehenden Ansprüche, wobei die Vorrichtung ein Mittel (4) zum kontrollierten Abführen eingebrachter Luft aus dem Hohlraum (6) aufweist.Device according to one of the preceding claims, wherein the device comprises means (4) for the controlled discharge of introduced air from the cavity (6). Vorrichtung nach einem der vorhergehenden Ansprüche, wobei die Vorrichtung zumindest ein Mittel (1) zum pneumatischen Einbringen von Fasern aufweist, welches mit dem zumindest einen Einlass verbunden ist.Device according to one of the preceding claims, wherein the device comprises at least one means (1) for the pneumatic introduction of fibers, which is connected to the at least one inlet. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei die Fasern einen Klebstoff aufweisen und die Vorrichtung ferner eine Vorrichtung zum Aushärten des Klebstoffs umfasst, insbesondere einen Ofen, welches mit dem Fördermittel (3) direkt oder über ein weiteres Fördermittel (3) verbunden ist.Device according to one of the preceding claims, wherein the fibers comprise an adhesive and the device further comprises a device for curing the adhesive, in particular a furnace which is connected to the conveying means (3) directly or via a further conveying means (3). Vorrichtung nach einem der vorhergehenden Ansprüche, wobei die Vorrichtung zum Herstellen von Dämmstoffplatten geeignet ist.Device according to one of the preceding claims, wherein the device is suitable for the manufacture of insulating panels. Verfahren zum Legen von Vliesbahnen, mit den Schritten: - kontinuierliches pneumatisches Einbringen von Fasern in einen Hohlraum (6), so dass sich in dem Hohlraum (6) die eingebrachten Fasern zu einem Abschnitt einer Vliesbahn fügen; und - kontinuierliches Herausfördern der Vliesbahn aus dem Hohlraum (6). Method for laying nonwoven webs, comprising the steps: - continuous pneumatic introduction of fibers into a cavity (6), so that in the cavity (6) the introduced fibers add to a portion of a nonwoven web; and - Continuous feeding out the nonwoven web from the cavity (6). Verfahren nach Anspruch 17, wobei der Schritt des kontinuierlichen pneumatischen Einbringens von Fasern in einen Hohlraum das Einblasen von Fasern in den Hohlraum beinhaltet.The method of claim 17, wherein the step of continuously pneumatically introducing fibers into a cavity includes injecting fibers into the cavity. Verfahren nach Anspruch 17 oder 18, umfassend die zusätzlichen Schritte: - Verschließen des Hohlraums (6) auf der Ausbringungsseite des Hohlraums (6), auf der die Vliesbahn aus dem Hohlraum (6) herausgefördert wird, vor dem pneumatischen Einbringen der Fasern; und - Öffnen des Hohlraums (6) auf der Ausbringungsseite, nachdem der Hohlraum (6) mit eingebrachten Fasern gefüllt ist. Method according to claim 17 or 18, comprising the additional steps: - Closing of the cavity (6) on the output side of the cavity (6) on which the nonwoven web is conveyed out of the cavity (6), prior to the pneumatic introduction of the fibers; and - Opening the cavity (6) on the application side, after the cavity (6) is filled with introduced fibers. Verfahren nach einem der Ansprüche 17 bis 19, wobei die Fasern einen Klebstoff aufweisen und das Verfahren den zusätzlichen Schritt umfasst: - kontinuierliches Hineinfördern der Vliesbahn in eine Vorrichtung zum Aushärten des Klebstoffs, insbesondere in einen Ofen. The method of any one of claims 17 to 19, wherein the fibers comprise an adhesive and the method comprises the additional step of: continuously feeding the nonwoven web into a device for curing the adhesive, in particular into a furnace. Verfahren nach einem der Ansprüche 17 bis 20, wobei die Vliesbahnen zu Dämmstoffplatten verarbeitet werden.Method according to one of claims 17 to 20, wherein the nonwoven webs are processed into insulation boards. Vliesbahn oder Dämmstoffplatte, erhalten durch das Verfahren nach einem der Ansprüche 17 bis 21.Nonwoven web or insulation board obtained by the method according to any one of claims 17 to 21.
EP07013035A 2007-07-03 2007-07-03 Device and method for laying non-woven lengths as insulating material Not-in-force EP2025788B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07013035A EP2025788B1 (en) 2007-07-03 2007-07-03 Device and method for laying non-woven lengths as insulating material
DE502007006423T DE502007006423D1 (en) 2007-07-03 2007-07-03 Apparatus and method for laying nonwoven webs as an insulating material
AT07013035T ATE497554T1 (en) 2007-07-03 2007-07-03 DEVICE AND METHOD FOR LAYING NON-WOVEN LABEL AS INSULATING MATERIAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07013035A EP2025788B1 (en) 2007-07-03 2007-07-03 Device and method for laying non-woven lengths as insulating material

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EP2025788A1 true EP2025788A1 (en) 2009-02-18
EP2025788B1 EP2025788B1 (en) 2011-02-02

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Citations (8)

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US4043005A (en) * 1975-05-13 1977-08-23 E. I. Du Pont De Nemours & Company Process for forming a staple fiber batt
GB2283028A (en) * 1993-10-19 1995-04-26 Kimberly Clark Co Forming belt for making profiled layers
DE4409416C1 (en) * 1994-03-18 1995-08-17 Gruenzweig & Hartmann Mineral wool insulation board, its uses and processes for its manufacture
WO2002012605A2 (en) * 2000-08-03 2002-02-14 Kimberly-Clark Worldwide, Inc. Multi-chamber process and apparatus for forming a stabilized absorbent web
USH2105H1 (en) * 2002-09-12 2004-06-01 Akiva Pinto Method and apparatus forming a fiber web
US20050045296A1 (en) * 2003-08-29 2005-03-03 Adam Gabriel Hammam Stabilized absorbent composite material and method for making
WO2007020065A1 (en) * 2005-08-19 2007-02-22 Rockwool International A/S Method and apparatus for the production of man-made vitreous fibre products
WO2007033158A2 (en) 2005-09-12 2007-03-22 Sellars Absorbent Materials, Inc. Method and device for making towel, tissue, and wipers on an air carding or air lay line utilizing hydrogen bonds

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043005A (en) * 1975-05-13 1977-08-23 E. I. Du Pont De Nemours & Company Process for forming a staple fiber batt
GB2283028A (en) * 1993-10-19 1995-04-26 Kimberly Clark Co Forming belt for making profiled layers
DE4409416C1 (en) * 1994-03-18 1995-08-17 Gruenzweig & Hartmann Mineral wool insulation board, its uses and processes for its manufacture
WO2002012605A2 (en) * 2000-08-03 2002-02-14 Kimberly-Clark Worldwide, Inc. Multi-chamber process and apparatus for forming a stabilized absorbent web
USH2105H1 (en) * 2002-09-12 2004-06-01 Akiva Pinto Method and apparatus forming a fiber web
US20050045296A1 (en) * 2003-08-29 2005-03-03 Adam Gabriel Hammam Stabilized absorbent composite material and method for making
WO2007020065A1 (en) * 2005-08-19 2007-02-22 Rockwool International A/S Method and apparatus for the production of man-made vitreous fibre products
WO2007033158A2 (en) 2005-09-12 2007-03-22 Sellars Absorbent Materials, Inc. Method and device for making towel, tissue, and wipers on an air carding or air lay line utilizing hydrogen bonds

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DE502007006423D1 (en) 2011-03-17
ATE497554T1 (en) 2011-02-15

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