EP0833965B1 - Intermediate card and a web-production process - Google Patents

Intermediate card and a web-production process Download PDF

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Publication number
EP0833965B1
EP0833965B1 EP96922010A EP96922010A EP0833965B1 EP 0833965 B1 EP0833965 B1 EP 0833965B1 EP 96922010 A EP96922010 A EP 96922010A EP 96922010 A EP96922010 A EP 96922010A EP 0833965 B1 EP0833965 B1 EP 0833965B1
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EP
European Patent Office
Prior art keywords
roller
web
doffer
card
rollers
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EP96922010A
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German (de)
French (fr)
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EP0833965A1 (en
Inventor
Werner Lasenga
Jürgen ANDERMANN
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DILO, JOHANN, PHILIPP
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Individual
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/04—Carding machines with worker and stripper or like rollers operating in association with a main cylinder
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers

Definitions

  • the invention relates to a nonwoven card for nonwoven manufacture of fiber material according to the preamble of the claim 1.
  • the invention further relates to a method for producing nonwovens from fiber material by means of a fleece card The aforementioned type according to the preamble of claim 16.
  • a tangled nonwoven card is included at least three rotating in the same direction as the master cylinder Working drums known in which the first working drum is engaged with the master cylinder while the two further working drums each with the first Work drum are engaged.
  • the two downstream, engaged with the first working drum Working drums divide the from the first working drum formed Flores, the Flore duplicated again on downstream conveyor belts become.
  • the fleece produced in this way consists of two layers of pile, the disadvantageously only lie loosely on top of each other and not are networked with each other.
  • the layers are connected only in one or more of the clutter following Processing stages.
  • a carding machine is known in which two pile-forming rollers designed as work rolls between the master cylinder and a doffer device are arranged, the through the Doffer responded merged fiber pile of a removal device be fed.
  • This carding machine also has the Disadvantage that the pile layers are not intimate with each other are networked.
  • the invention has for its object a fleece card of the latter type, as well as a procedure for Create nonwovens that already have networking of the fleece produced in the card and where the manufacturing process, especially light ones Flores and high production speeds better is controllable and where the design effort for the production machine is reduced.
  • the invention advantageously provides that at least one of the pile-forming rollers as a tangled roller a clothing producing a tangle of the pile of fibers is that the at least one tangled roller is a centrifugal trough is assigned whereby the space between the at least a tangled roller and the one forming a centrifugal trough Trough plates tapered in the working direction and the trough plate before the connecting line between the centers the tangled rollers and the doffer roller at a predetermined distance Length to form a free non-woven zone ends, and that the teeth of the set of tangled rollers (2,4) has a chest angle of only a few degrees.
  • Such a fleece card enables unification of several floras and their simultaneous networking already in the card after the pile-forming rollers and in front of the acceptance facility.
  • Another advantage is there in that superimposed fiber pile can be produced, the a combination of at least one tangled pile and a longitudinally oriented fleece. It is therefore a Fiber pile can be produced with intimate networking.
  • the formation of tangled fleece takes place in connection with a centrifugal bowl and with a set with a small chest angle.
  • the formation of tangled fleece takes place with a centrifugal trough in a centrifugal dynamic way, the pile first is subjected to a compression effect and then by the back pressure or upsetting pressure is released.
  • the random fleece weave takes place after the fibers are released from the Effect of accumulation from the tangled roller on a subsequent roller.
  • the fiber orientation in the fleece is three-dimensional or confused or isotropic.
  • the peripheral speed of the master cylinder is over 500 m / min, preferably over 1000 m / min.
  • the peripheral speed of the at least one random roller is over 100 m / min to about 2000 m / min, preferably 400 to 1500 m / min.
  • a fleece card enables production outputs of approx. 400 kg / m / h for lightweight fleeces below 30 g / m 2 .
  • the invention thus enables lightweight nonwovens to be produced at high production speeds.
  • a single doffer roller is engaged with two pile-forming rollers, by both Rolling each takes over a batt and the batt doubled. Duplication takes place immediately behind the pile-forming rollers, so that only one Doffer roller is required.
  • the fleece card with one downstream of a pile-forming roller Doffer roll is provided that a single upsetting roll is engaged with both doffer rollers and by both Doffer rolls each take over a batt and the batt doubled.
  • duplication only behind the doffer device namely on the first upsetting roller of an upsetting device.
  • there is a reduction of the required machine elements since behind the doffer device only one acceptance device and one Conveyor belt are needed. This embodiment too is particularly suitable for the production of light doubled non-woven fabrics at high production speed.
  • Another embodiment of the fleece card has one in engagement with the master cylinder and with this in the same direction rotating pile-forming roller as well an opposite also used as a pile-forming roller to the master cylinder rotating doffer roller.
  • the tangled roller and the doffer roller each take a pile of from the master cylinder, whereby the pile-forming tangled roller a counter rotating doffer roller is assigned.
  • a single upsetting roller is with both doffer rollers in the Intervention and takes over from each of the two doffer rollers Fiber web that is duplicated on the upsetting roller.
  • a variant of the last-mentioned embodiment is that the upsetting device two first Compression rollers, each with a doffer roller are engaged, the fibrous web on a second The upsetting roller can be duplicated with the first two upsetting rollers is engaged.
  • Another advantage of the described exemplary embodiments is that on the circumference of the master cylinder more space for pairs of workers and fixed carding segments remains.
  • the doffer roller therefore takes over the function on the one hand the pile-forming roller and the function of duplication of two differently produced fiber pile.
  • the manufacturing process therefore only requires a pile-forming roller, e.g. a tangled roller and a single doffer roller, whereby compared to the aforementioned embodiments additional roller can be saved.
  • Fig. 1 shows a first embodiment of a fleece card with a feed device 22 consisting of a feed trough 19 and a feed roller 21.
  • the following licker-in device 27 consists of a Vorwalze 23 and a Vorr complicatertambour 24.
  • the Vorr complicatertambour 24 is 20 with two pairs of workers and turner Mistake.
  • the main drum 1 is with five pairs of workers and turner 20 provided. In the direction of rotation behind the workers and Turning pairs are two pile-forming tangled rollers 2.4 in Direction of rotation in succession with the master cylinder 1 in engagement and each take a pile of fibers 3.5 from that Master cylinder 1 from. A single doffer roller 6 takes over both fiber pile 3.5 by the tangled rollers 2.4 and duplicated this, so that a doubled pile 9 on the following
  • the upsetting device 10, 12 and those behind the upsetting device 10, 12 arranged removal device 14, 16 is transmitted. Arrived from the acceptance device 14, 16 the doubled fiber fleece 17 on a conveyor belt 18.
  • the Combination of two random rolls 2.4 with only one Doffer roller 6 the tangled rollers lie close together, whereby on the circumference of the master cylinder 1 place for an additional one Worker and turner pair 20 remains. At a additional worker and turner pair 20 can the carding performance be increased.
  • the random rollers 2, 4 are stationary in the direction of rotation Provide trough plates 30,32,36.
  • the space between Tangled roller 2.4 and the one forming a centrifugal trough Trough plates 30.36 taper in the working direction, the trough plate in front of the connecting line between the centers of the tangled rollers 2.4 and the doffer roller 6 at a distance of a predetermined length to form a free fleece formation zone ends.
  • the set of teeth the tangled rollers 2.4 has a chest angle of only a few Degrees, preferably about 11 °.
  • Fig. 2A shows a second embodiment in which for each random roller 2.4 a doffer roller 6.8 is provided, where both doffer rollers 6,8 their pile 3.5 on one common upsetting roller 10 of upsetting device 10, 12 transferred so that the fiber pile 3.5 in contrast to that first described embodiment not in the Dofferque be duplicated, but immediately afterwards.
  • the random rollers 2,4 are centrifugal troughs forming trough plates 30.36 assigned, their distance to the tangled rollers 2.4 towards the transfer point to the doffer rollers 6.8 decreases. This reduction in the distance between the trough plates 30.36 leads to a congestion effect in the tapered Space between tangled roller 2.4 and trough plate 30.36. The congestion effect is immediately before delivery of the Pile 3.5 on the doffer roller 6.8 suddenly lifted, causing a detachment of part of the fibers from the clothing with subsequent formation of tangled fleece on the doffer roller 6.8 is reached.
  • the peripheral speed of the master cylinder 1 is over 500 m / min, preferably over 1000 m / min, while the Circumferential speed of the random rollers 2.4 preferably in Range is between 400 and 1500 m / min.
  • the pile-forming rollers 2, 4, preferably both random rollers, can have a different speed or a have different diameters, which makes the properties affects the fiber pile to be duplicated 3.5 can be.
  • the master cylinder 1 is preferably larger than that pile-forming rollers 2.4.
  • the doffer rollers 6,8 also preferably have one larger diameter than the pile-forming rollers 2.4.
  • 2B is a variant of the second embodiment, where the pile of fibers 3.5 of the doffer rollers 6.8 first on one upsetting roller 10a, 10b of the upsetting device 10,12 is transmitted, the fiber pile 3.5 duplicated on the common second upsetting roller 12 become.
  • the common second upsetting roller 12 of the upsetting device 10,12 has a larger diameter than that first upsetting rollers 10a, 10b, preferably also one larger diameter than the diameter of the doffer rollers 6.8.
  • the third embodiment shown in Fig. 3 shows a fleece card with a feed device 22, a master cylinder 1 with carding segments 28, a pile-forming Tangled roller 2 with trough plate 30 and a doffer roller 6, the same with the tangled roller 2 and the master cylinder 1 is engaged.
  • the only doffer roller 6 takes over both a pile of fibers in a tangled position from the tangling roller 2 and fibers from the master cylinder 1, so that in turn two fiber pile 3.5 on a single, at the same time as Doffer roller 6 serving to form the pile roller.
  • the doubled fiber pile 9 is in accordance with the embodiment 1 about an upsetting device 10, 12 and a removal device 14, 16 on a conveyor belt 18 transferred.
  • the doffer roller 6 have a substantially the same diameter as the master cylinder 1.
  • the fleece card according to the third Embodiment generated with a decrease in the duplicate Fiber webs 9, as shown in FIG. 3, are intimately networked Non-woven fabric 15, the underside of which is longitudinally oriented The pile and the top of which consist of a tangled pile.
  • the size of the doffer roller 6,8 affects the confusion.
  • the Tangled roller 2 and the doffer roller 6 are in terms of their Location, i.e. their mutual distances and their distances adjustable to master cylinder 1.
  • carding segments 28 can also as in the Embodiments of FIGS. 1 and 2 workers and Kender pairs 20 kick.
  • the fourth embodiment shown in FIG. 4 shows a fleece card, the basic structure of to the main drum 1 the embodiments of FIGS. 1 and 2 corresponds.
  • the main drum 1 is in the same direction with the main drum 1 rotating random roller 2 and separate from the tangling roller 2 in a direction opposite to the main drum 1 rotating doffer roller 8 in engagement.
  • the doffer roller 8 is used as a pile-forming roller.
  • the tangling roller 2 is followed by a doffer roller 6 which takes the batt 3 from the tangled roller 2.
  • Both doffer rollers 6.8 transfer their fiber pile 3.5 to one common upsetting roller 10 of upsetting device 10, 12. Accordingly, in this embodiment, too Fiber pile 3.5 duplicated immediately after the doffer stage.
  • This embodiment also enables networking of two structurally different floras over one Upsetting process.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung betrifft eine Vlieskrempel für die Vliesherstellung aus Fasermaterial nach dem Oberbegriff des Anspruchs 1.The invention relates to a nonwoven card for nonwoven manufacture of fiber material according to the preamble of the claim 1.

Die Erfindung betrifft ferner ein Verfahren zur Vliesherstellung aus Fasermaterial mittels einer Vlieskrempel der zuvor genannten Art nach dem Oberbegriff des Anspruchs 16.The invention further relates to a method for producing nonwovens from fiber material by means of a fleece card The aforementioned type according to the preamble of claim 16.

Aus der EP 0 330 750 A2 ist eine Wirrvlieskrempel mit mindestens drei mit dem Hauptzylinder gleichsinnig rotierenden Arbeitstrommeln bekannt, bei der die erste Arbeitstrommel mit dem Hauptzylinder im Eingriff ist, während die beiden weiteren Arbeitstrommeln jeweils mit der ersten Arbeitstrommel im Eingriff sind. Die beiden nachgeschalteten, mit der ersten Arbeitstrommel im Eingriff stehenden Arbeitstrommeln bewirken eine Aufteilung des von der ersten Arbeitstrommel gebildeten Flores, wobei die Flore auf nachgeschalteten Transportbändern wieder dubliert werden.From EP 0 330 750 A2 a tangled nonwoven card is included at least three rotating in the same direction as the master cylinder Working drums known in which the first working drum is engaged with the master cylinder while the two further working drums each with the first Work drum are engaged. The two downstream, engaged with the first working drum Working drums divide the from the first working drum formed Flores, the Flore duplicated again on downstream conveyor belts become.

Es sind ferner Krempelanlagen der Firma Hergeth Hollingsworth bekannt (Krempel Modell H 6.345), in denen zwei Wirrwalzen mit einem Hauptzylinder im Eingriff sind, die jeweils einen Wirrfaserflor erzeugen, der letztlich auf je ein Transportband abgelegt wird. Das Dublieren der beiden Wirrfaserflore erfolgt durch Zusammenführen der beiden Flore auf dem Transportband.There are also carding machines from Hergeth Hollingsworth known (card model H 6.345), in which two Tangled rollers are engaged with a master cylinder that each create a tangled fiber web, which ultimately depends on each a conveyor belt is put down. Duplicating the two Tangled fibers are made by merging the two Flore on the conveyor belt.

Das so erzeugte Vlies besteht aus zwei Florlagen, die nachteiligerweise nur lose aufeinanderliegen und nicht miteinander vernetzt sind. Eine Verbindung der Lagen erfolgt erst in einer oder mehreren der Krempel nachfolgenden Verarbeitungsstufen.The fleece produced in this way consists of two layers of pile, the disadvantageously only lie loosely on top of each other and not are networked with each other. The layers are connected only in one or more of the clutter following Processing stages.

Aus der FR-A-33 14 14, die den nächstliegenden Stand der Technik bildet, ist eine Krempelanlage bekannt, bei der zwei als Arbeitswalzen ausgebildete florbildenden Walzen zwischen dem Hauptzylinder und einer Doffereinrichtung angeordnet sind, wobei die durch die Doffereinrichtung zusammengeführten Faserflore einer Abnahmeeinrichtung zugeführt werden. Auch diese Krempelanlage besitzt den Nachteil, daß die erzeugten Florlagen nicht innig miteinander vernetzt sind.From FR-A-33 14 14, which is the closest state of the Technology forms, a carding machine is known in which two pile-forming rollers designed as work rolls between the master cylinder and a doffer device are arranged, the through the Doffereinrichtung merged fiber pile of a removal device be fed. This carding machine also has the Disadvantage that the pile layers are not intimate with each other are networked.

Der Erfindung liegt die Aufgabe zugrunde, eine Vlieskrempel der zuletzt genannten Art, sowie ein Verfahren zur Vliesherstellung zu schaffen, bei denen bereits eine Vernetzung des hergestellten Vlieses in der Krempel erfolgt und bei denen der Herstellprozeß, insbesondere bei leichten Floren und hohen Produktionsgeschwindigkeiten besser kontrollierbar ist und bei denen der konstruktive Aufwand für die Produktionsmaschine reduziert ist.The invention has for its object a fleece card of the latter type, as well as a procedure for Create nonwovens that already have networking of the fleece produced in the card and where the manufacturing process, especially light ones Flores and high production speeds better is controllable and where the design effort for the production machine is reduced.

Zur Lösung dieser Aufgabe dienen die Merkmale der Patentansprüche 1 bzw. 16.The features of the claims serve to solve this problem 1 or 16.

Die Erfindung sieht in vorteilhafter Weise vor, daß mindestens eine der florbildenden Walzen als Wirrwalze mit einer eine Wirrlage des Faserflors erzeugenden Garnitur ist, daß der mindestens einen Wirrwalze eine Zentrifugalmulde zugeordnet ist wobei sich der Zwischenraum zwischen der mindestens einen Wirrwalze und den eine Zentrifugalmulde bildenden Muldenblechen in Arbeitsrichtung verjüngt und das Muldenblech vor der Verbindungslinie zwischen den Mittelpunkten der Wirrwalzen und der Dofferwalze in einem Abstand vorbestimmter Länge zur Bildung einer freien Vliesbildungszone endet, und daß die Zahnung der Garnitur der Wirrwalzen (2,4) einen Brustwinkel von nur wenigen Winkelgraden aufweist. The invention advantageously provides that at least one of the pile-forming rollers as a tangled roller a clothing producing a tangle of the pile of fibers is that the at least one tangled roller is a centrifugal trough is assigned whereby the space between the at least a tangled roller and the one forming a centrifugal trough Trough plates tapered in the working direction and the trough plate before the connecting line between the centers the tangled rollers and the doffer roller at a predetermined distance Length to form a free non-woven zone ends, and that the teeth of the set of tangled rollers (2,4) has a chest angle of only a few degrees.

Eine derartige Vlieskrempel ermöglicht eine Vereinigung von mehreren Floren und deren gleichzeitige Vernetzung bereits in der Krempel nach den florbildenden Walzen und vor der Abnahmeeinrichtung. Ein weiterer Vorteil besteht darin, daß überlagerte Faserflore herstellbar sind, die eine Kombination von mindestens einem Wirrfaserflor und einem längsorientierten Vlies darstellen. Es ist somit ein Faserflor mit inniger Vernetzung herstellbar. Die Wirrvliesbildung erfolgt in Verbindung mit einer Zentrifugalmulde und mit einer Garnitur mit einem geringen Brustwinkel. Die Wirrvliesbildung mit einer Zentrifugalmulde erfolgt auf zentrifugaldynamische Art, wobei der Flor zunächst einer Stauchwirkung unterzogen wird und sodann von dem Stau- oder Stauchdruck befreit wird. Die Wirrvliesbidung erfolgt also nach dem Freiwerden der Fasern von der Stauwirkung von der Wirrwalze auf eine nachfolgende Walze. Die Faserorientierung im Vlies ist dreidimensional bzw. wirr oder isotrop.Such a fleece card enables unification of several floras and their simultaneous networking already in the card after the pile-forming rollers and in front of the acceptance facility. Another advantage is there in that superimposed fiber pile can be produced, the a combination of at least one tangled pile and a longitudinally oriented fleece. It is therefore a Fiber pile can be produced with intimate networking. The formation of tangled fleece takes place in connection with a centrifugal bowl and with a set with a small chest angle. The formation of tangled fleece takes place with a centrifugal trough in a centrifugal dynamic way, the pile first is subjected to a compression effect and then by the back pressure or upsetting pressure is released. The random fleece weave takes place after the fibers are released from the Effect of accumulation from the tangled roller on a subsequent roller. The fiber orientation in the fleece is three-dimensional or confused or isotropic.

Die Umfangsgeschwindigkeit des Hauptzylinders beträgt über 500 m/min, vorzugsweise über 1000 m/min.The peripheral speed of the master cylinder is over 500 m / min, preferably over 1000 m / min.

Die Umfangsgeschwindigkeit der mindestens einen Wirrwalze beträgt über 100 m/min bis ca. 2000 m/min, vorzugsweise 400 bis 1500 m/min. Eine derartige Vlieskrempel ermöglicht Produktionsleistungen von ca. 400 kg/m/h bei Leichtgewichtsvliesen unter 30 g/m2. Die Erfindung ermöglicht es somit, Leichtgewichtsvliese mit hohen Produktionsgeschwindigkeiten herzustellen.The peripheral speed of the at least one random roller is over 100 m / min to about 2000 m / min, preferably 400 to 1500 m / min. Such a fleece card enables production outputs of approx. 400 kg / m / h for lightweight fleeces below 30 g / m 2 . The invention thus enables lightweight nonwovens to be produced at high production speeds.

Bei einem Ausführungsbeispiel der Erfindung ist in vorteilhafter Weise vorgesehen, daß eine einzige Dofferwalze mit zwei florbildenden Walzen im Eingriff ist, von beiden Walzen jeweils einen Faserflor übernimmt und die Faserflore dubliert. Das Dublieren erfolgt unmittelbar hinter den florbildenden Walzen, so daß nur eine einzige Dofferwalze benötigt wird.In one embodiment of the invention is advantageous Way provided that a single doffer roller is engaged with two pile-forming rollers, by both Rolling each takes over a batt and the batt doubled. Duplication takes place immediately behind the pile-forming rollers, so that only one Doffer roller is required.

Gemäß einem weiteren Ausführungsbeispiel der Vlieskrempel mit je einer einer florbildenden Walze nachgeordneten Dofferwalze ist vorgesehen, daß eine einzige Stauchwalze mit beiden Dofferwalzen im Eingriff ist und von beiden Dofferwalzen je einen Faserflor übernimmt und die Faserflore dubliert. Bei dieser Variante der Erfindung erfolgt das Dublieren erst hinter der Doffereinrichtung, und zwar an der ersten Stauchwalze einer Staucheinrichtung. Auch bei diesem Ausführungsbeispiel erfolgt eine Reduzierung der erforderlichen Maschinenelemente, da hinter der Doffereinrichtung nur eine Abnahmeeinrichtung und ein einziges Transportband benötigt werden. Auch dieses Ausführungsbeispiel eignet sich insbesondere zur Herstellung von leichten dublierten Faservliesen bei hoher Produktionsgeschwindigkeit.According to a further embodiment, the fleece card with one downstream of a pile-forming roller Doffer roll is provided that a single upsetting roll is engaged with both doffer rollers and by both Doffer rolls each take over a batt and the batt doubled. In this variant of the invention duplication only behind the doffer device, namely on the first upsetting roller of an upsetting device. Also in this embodiment there is a reduction of the required machine elements, since behind the doffer device only one acceptance device and one Conveyor belt are needed. This embodiment too is particularly suitable for the production of light doubled non-woven fabrics at high production speed.

Ein weiteres Ausführungsbeispiel der Vlieskrempel weist eine mit dem Hauptzylinder im Eingriff befindliche und mit diesem gleichsinnig rotierende florbildende Walze sowie eine ebenfalls als florbildende Walze verwendete, gegenläufig zu dem Hauptzylinder rotierende Dofferwalze auf. Die Wirrwalze und die Dofferwalze nehmen je einen Flor von dem Hauptzylinder ab, wobei der florbildenden Wirrwalze eine gegenläufig rotierende Dofferwalze zugeordnet ist. Eine einzige Stauchwalze ist mit beiden Dofferwalzen im Eingriff und übernimmt von beiden Dofferwalzen je einen Faserflor, der auf der Stauchwalze dubliert wird. Dieses Ausführungsbeispiel ermöglicht die Vernetzung von zwei strukturell unterschiedlichen Floren über einen Stauchprozeß.Another embodiment of the fleece card has one in engagement with the master cylinder and with this in the same direction rotating pile-forming roller as well an opposite also used as a pile-forming roller to the master cylinder rotating doffer roller. The tangled roller and the doffer roller each take a pile of from the master cylinder, whereby the pile-forming tangled roller a counter rotating doffer roller is assigned. A single upsetting roller is with both doffer rollers in the Intervention and takes over from each of the two doffer rollers Fiber web that is duplicated on the upsetting roller. This Embodiment enables the networking of two structurally different floras via a compression process.

Eine Variante des zuletzt genannten Ausführungsbeispiels besteht darin, daß die Staucheinrichtung zwei erste Stauchwalzen aufweist, die jeweils mit einer Dofferwalze im Eingriff sind, wobei die Faserflore auf einer zweiten Stauchwalze dubliert werden, die mit beiden ersten Stauchwalzen im Eingriff ist.A variant of the last-mentioned embodiment is that the upsetting device two first Compression rollers, each with a doffer roller are engaged, the fibrous web on a second The upsetting roller can be duplicated with the first two upsetting rollers is engaged.

Ein weiterer Vorteil der beschriebenen Ausführungsbeispiele besteht darin, daß auf dem Umfang des Hauptzylinders mehr Platz für Arbeiterwenderpaare oder feststehende Kardiersegmente verbleibt.Another advantage of the described exemplary embodiments is that on the circumference of the master cylinder more space for pairs of workers and fixed carding segments remains.

Bei einer Weiterbildung der Erfindung mit mindestens einer dem Hauptzylinder nachgeschalteten florbildenden Walze und mindestens einer dieser florbildenden Walze nachgeschalteten Dofferwalze ist vorgesehen, daß die Dofferwalze sowohl mit mindestens einer vliesbildenden Walze als auch mit dem Hauptzylinder im Eingriff ist, von jeder Walze je einen Faserflor übernimmt und die Faserflore dubliert.In a development of the invention with at least one the pile-forming roller downstream of the master cylinder and downstream of at least one of these pile-forming rollers Doffer roller is provided that the doffer roller both with at least one fleece-forming roller as well is engaged with the master cylinder, depending on each roller takes over a pile and duplicates the pile.

Bei einer derartigen Vlieskrempel ist die Anzahl der erforderlichen Maschinenelemente noch weiter reduziert, wobei die Faserflore auf der einzigen Dofferwalze dubliert werden, die einen Faserflor direkt von dem Hauptzylinder und einen weiteren Faserflor von der florbildenden, mit dem Hauptzylinder im Eingriff befindlichen Walze übernimmt. In the case of such a fleece card, the number is required Machine elements reduced even further, the fiber pile duplicating on the single doffer roller that have a batt directly from the master cylinder and another fiber pile from the pile-forming, with the master cylinder engaged roller takes over.

Die Dofferwalze übernimmt demzufolge einerseits die Funktion der florbildenden Walze und die Funktion des Dublierens von zwei unterschiedlich erzeugten Faserfloren. Der Herstellprozeß benötigt daher nur eine florbildende Walze, z.B. eine Wirrwalze und eine einzige Dofferwalze, wodurch gegenüber den vorgenannten Ausführungsbeispielen eine weitere Walze eingespart werden kann.The doffer roller therefore takes over the function on the one hand the pile-forming roller and the function of duplication of two differently produced fiber pile. The The manufacturing process therefore only requires a pile-forming roller, e.g. a tangled roller and a single doffer roller, whereby compared to the aforementioned embodiments additional roller can be saved.

Es versteht sich, daß z.B. eine weitere Wirrwalze zugleich mit dem Hauptzylinder und der Dofferwalze im Eingriff sein kann, wodurch drei Faserflore auf der Dofferwalze dubliert werden können.It is understood that e.g. another tangled roller at the same time be engaged with the master cylinder and the doffer roller can, causing three fiber webs to be duplicated on the doffer roller can be.

Weitere vorteilhafte Merkmale sind den Unteransprüchen zu entnehmen.Further advantageous features can be found in the subclaims remove.

Im folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert.The following are with reference to the drawings Embodiments of the invention explained in more detail.

Es zeigen:

Fig. 1
ein erstes Ausführungsbeispiel einer erfindungsgemäßen Vlieskrempel,
Fig. 2A
ein weiteres Ausführungbeispiel, bei dem die innige Vernetzung von zwei wirrorientierten Floren über einen Stauchprozeß erfolgt,
Fig. 2B
eine Variante zu dem Ausführungsbeispiel der Fig. 2A,
Fig. 3
ein drittes Ausführungsbeispiel, bei dem die innige Vernetzung von zwei strukturell unterschiedlichen Floren durch Vernetzung der Einzelfasern erfolgt, und
Fig. 4
ein viertes Ausführungsbeispiel, bei dem die Vernetzung von zwei strukturell unterschiedlichen Floren über einen Stauchprozeß erfolgt.
Show it:
Fig. 1
a first embodiment of a fleece card according to the invention,
Figure 2A
another exemplary embodiment, in which the intimate networking of two wiro-oriented floras takes place via a compression process,
Figure 2B
a variant of the embodiment of FIG. 2A,
Fig. 3
a third embodiment in which the intimate networking of two structurally different pile takes place by networking the individual fibers, and
Fig. 4
a fourth embodiment in which the networking of two structurally different floras takes place via a compression process.

Fig. 1 zeigt ein erstes Ausführungsbeispiel einer Vlieskrempel mit einer Einzugseinrichtung 22, bestehend aus einer Einzugsmulde 19 und einer Einzugswalze 21.Fig. 1 shows a first embodiment of a fleece card with a feed device 22 consisting of a feed trough 19 and a feed roller 21.

Die nachfolgende Vorreißeinrichtung 27 besteht aus einer Vorwalze 23 und einem Vorreißertambour 24. Der Vorreißertambour 24 ist mit zwei Arbeiter- und Wenderpaaren 20 versehen.The following licker-in device 27 consists of a Vorwalze 23 and a Vorreißertambour 24. The Vorreißertambour 24 is 20 with two pairs of workers and turner Mistake.

Darauf folgt eine Übertragungswalze 26, die den zugeführten Faserflor auf den Hauptzylinder 1 überträgt.This is followed by a transfer roller 26, which is fed Fibrous web transfers to the master cylinder 1.

Die Haupttrommel 1 ist mit fünf Arbeiter- und Wenderpaaren 20 versehen. In Drehrichtung hinter den Arbeiter- und Wenderpaaren sind zwei florbildende Wirrwalzen 2,4 in Drehrichtung nacheinander mit dem Hauptzylinder 1 im Eingriff und nehmen jeweils einen Faserflor 3,5 von dem Hauptzylinder 1 ab. Eine einzige Dofferwalze 6 übernimmt beide Faserflore 3,5 von den Wirrwalzen 2,4 und dubliert diese, so daß ein dublierter Faserflor 9 auf die nachfolgende Staucheinrichtung 10,12 und die hinter der Staucheinrichtung 10,12 angeordnete Abnahmeeinrichtung 14,16 übertragen wird. Von der Abnahmeeinrichtung 14,16 gelangt das dublierte Faservlies 17 auf ein Transportband 18. The main drum 1 is with five pairs of workers and turner 20 provided. In the direction of rotation behind the workers and Turning pairs are two pile-forming tangled rollers 2.4 in Direction of rotation in succession with the master cylinder 1 in engagement and each take a pile of fibers 3.5 from that Master cylinder 1 from. A single doffer roller 6 takes over both fiber pile 3.5 by the tangled rollers 2.4 and duplicated this, so that a doubled pile 9 on the following The upsetting device 10, 12 and those behind the upsetting device 10, 12 arranged removal device 14, 16 is transmitted. Arrived from the acceptance device 14, 16 the doubled fiber fleece 17 on a conveyor belt 18.

Bei dem Ausführungsbeispiel der Fig. 1 können bei der Kombination von zwei Wirrwalzen 2,4 mit nur einer einzigen Dofferwalze 6 die Wirrwalzen eng zusammenliegen, wodurch auf dem Umfang des Hauptzylinders 1 Platz für ein zusätzliches Arbeiter- und Wenderpaar 20 verbleibt. Bei einem zusätzlichen Arbeiter- und Wenderpaar 20 kann die Kardierleistung gesteigert werden.In the embodiment of FIG. 1, the Combination of two random rolls 2.4 with only one Doffer roller 6 the tangled rollers lie close together, whereby on the circumference of the master cylinder 1 place for an additional one Worker and turner pair 20 remains. At a additional worker and turner pair 20 can the carding performance be increased.

Die Wirrwalzen 2,4 sind in Umlaufrichtung mit stationären Muldenblechen 30,32,36 versehen. Der Zwischenraum zwischen Wirrwalze 2,4 und den eine Zentrifugalmulde bildenden Muldenblechen 30,36 verjüngt sich in Arbeitsrichtung, wobei das Muldenblech vor der Verbindungslinie zwischen den Mittelpunkten der Wirrwalzen 2,4 und der Dofferwalze 6 in einem Abstand vorbestimmter Länge zur Bildung einer freien Vliesbildungszone endet. Die Zahnung der Garnitur der Wirrwalzen 2,4 weist einen Brustwinkel von nur wenigen Winkelgraden, vorzugsweise ca. 11° auf.The random rollers 2, 4 are stationary in the direction of rotation Provide trough plates 30,32,36. The space between Tangled roller 2.4 and the one forming a centrifugal trough Trough plates 30.36 taper in the working direction, the trough plate in front of the connecting line between the centers of the tangled rollers 2.4 and the doffer roller 6 at a distance of a predetermined length to form a free fleece formation zone ends. The set of teeth the tangled rollers 2.4 has a chest angle of only a few Degrees, preferably about 11 °.

Fig. 2A zeigt ein zweites Ausführungsbeispiel, bei dem für jede Wirrwalze 2,4 je eine Dofferwalze 6,8 vorgesehen ist, wobei beide Dofferwalzen 6,8 ihren Faserflor 3,5 auf eine gemeinsame Stauchwalze 10 der Staucheinrichtung 10,12 übertragen, so daß die Faserflore 3,5 im Gegensatz zu dem zuerst beschriebenen Ausführungsbeispiel nicht in der Dofferstufe dubliert werden, sondern unmittelbar danach.Fig. 2A shows a second embodiment in which for each random roller 2.4 a doffer roller 6.8 is provided, where both doffer rollers 6,8 their pile 3.5 on one common upsetting roller 10 of upsetting device 10, 12 transferred so that the fiber pile 3.5 in contrast to that first described embodiment not in the Dofferstufe be duplicated, but immediately afterwards.

Den Wirrwalzen 2,4 sind Zentrifugalmulden bildende Muldenbleche 30,36 zugeordnet, deren Abstand zu den Wirrwalzen 2,4 in Richtung auf die Übergabestelle zu den Dofferwalzen 6,8 abnimmt. Diese Verringerung des Abstandes der Muldenbleche 30,36 führt zu einer Stauwirkung in dem sich verjüngenden Raum zwischen Wirrwalze 2,4 und Muldenblech 30,36. Die Stauwirkung wird unmittelbar vor Übergabe der Flore 3,5 an die Dofferwalze 6,8 plötzlich aufgehoben, wodurch ein Loslösen eines Teils der Fasern aus der Garnitur mit anschließender Wirrvliesbildung auf der Dofferwalze 6,8 erreicht wird.The random rollers 2,4 are centrifugal troughs forming trough plates 30.36 assigned, their distance to the tangled rollers 2.4 towards the transfer point to the doffer rollers 6.8 decreases. This reduction in the distance between the trough plates 30.36 leads to a congestion effect in the tapered Space between tangled roller 2.4 and trough plate 30.36. The congestion effect is immediately before delivery of the Pile 3.5 on the doffer roller 6.8 suddenly lifted, causing a detachment of part of the fibers from the clothing with subsequent formation of tangled fleece on the doffer roller 6.8 is reached.

Die Umfangsgeschwindigkeit des Hauptzylinders 1 beträgt über 500 m/min, vorzugsweise über 1000 m/min, während die Umfangsgeschwindigkeit der Wirrwalzen 2,4 vorzugsweise im Bereich zwischen 400 und 1500 m/min liegt.The peripheral speed of the master cylinder 1 is over 500 m / min, preferably over 1000 m / min, while the Circumferential speed of the random rollers 2.4 preferably in Range is between 400 and 1500 m / min.

Die florbildenden Walzen 2,4, vorzugsweise beide Wirrwalzen, können eine unterschiedliche Drehzahl oder einen unterschiedlichen Durchmesser aufweisen, wodurch die Eigenschaften der zu dublierenden Faserflore 3,5 beeinflußt werden können. Bei den Ausführungsbeispielen der Fign. 1 und 2 ist der Hauptzylinder 1 vorzugsweise größer als die florbildenden Walzen 2,4.The pile-forming rollers 2, 4, preferably both random rollers, can have a different speed or a have different diameters, which makes the properties affects the fiber pile to be duplicated 3.5 can be. In the embodiments of FIGS. 1 and 2, the master cylinder 1 is preferably larger than that pile-forming rollers 2.4.

Dabei haben auch die Dofferwalzen 6,8 vorzugsweise einen größeren Durchmesser als die florbildenden Walzen 2,4.The doffer rollers 6,8 also preferably have one larger diameter than the pile-forming rollers 2.4.

Fig. 2B ist eine Variante des zweiten Ausführungsbeispiels, bei der der Faserflor 3,5 von den Dofferwalzen 6,8 zunächst auf jeweils eine Stauchwalze 10a,10b der Staucheinrichtung 10,12 übertragen wird, wobei die Faserflore 3,5 auf der gemeinsamen zweiten Stauchwalze 12 dubliert werden. Die gemeinsame zweite Stauchwalze 12 der Staucheinrichtung 10,12 weist einen größeren Durchmesser als die ersten Stauchwalzen 10a,10b auf, vorzugsweise auch einen größeren Durchmesser als der Durchmesser der Dofferwalzen 6,8.2B is a variant of the second embodiment, where the pile of fibers 3.5 of the doffer rollers 6.8 first on one upsetting roller 10a, 10b of the upsetting device 10,12 is transmitted, the fiber pile 3.5 duplicated on the common second upsetting roller 12 become. The common second upsetting roller 12 of the upsetting device 10,12 has a larger diameter than that first upsetting rollers 10a, 10b, preferably also one larger diameter than the diameter of the doffer rollers 6.8.

Das in Fig. 3 dargestellte dritte Ausführungsbeispiel zeigt eine Vlieskrempel mit einer Einzugseinrichtung 22, einem Hauptzylinder 1 mit Kardiersegmenten 28, einer florbildenden Wirrwalze 2 mit Muldenblech 30 und einer Dofferwalze 6, die zugleich mit der Wirrwalze 2 und dem Hauptzylinder 1 im Eingriff ist. Die einzige Dofferwalze 6 übernimmt sowohl einen Faserflor in Wirrlage von der Wirrwalze 2 sowie Fasern von dem Hauptzylinder 1, so daß wiederum zwei Faserflore 3,5 auf einer einzigen, zugleich als florbildende Walze dienenden Dofferwalze 6 dubliert werden. Der dublierte Faserflor 9 wird entsprechend dem Ausführungsbeispiel der Fig. 1 über eine Staucheinrichtung 10,12 und eine Abnahmeeinrichtung 14,16 auf ein Transportband 18 übertragen.The third embodiment shown in Fig. 3 shows a fleece card with a feed device 22, a master cylinder 1 with carding segments 28, a pile-forming Tangled roller 2 with trough plate 30 and a doffer roller 6, the same with the tangled roller 2 and the master cylinder 1 is engaged. The only doffer roller 6 takes over both a pile of fibers in a tangled position from the tangling roller 2 and fibers from the master cylinder 1, so that in turn two fiber pile 3.5 on a single, at the same time as Doffer roller 6 serving to form the pile roller. The doubled fiber pile 9 is in accordance with the embodiment 1 about an upsetting device 10, 12 and a removal device 14, 16 on a conveyor belt 18 transferred.

Bei diesem Ausführungsbeispiel kann die Dofferwalze 6 einen im wesentlichen gleichen Durchmesser aufweisen wie der Hauptzylinder 1. Die Vlieskrempel gemäß dem dritten Ausführungsbeispiel erzeugt bei einer Abnahme des dublierten Faserflores 9 wie in Fig. 3 gezeigt ein innig vernetztes Faservlies 15, dessen Unterseite aus einem längsorientierten Flor und dessen Oberseite aus einem Wirrflor besteht.In this embodiment, the doffer roller 6 have a substantially the same diameter as the master cylinder 1. The fleece card according to the third Embodiment generated with a decrease in the duplicate Fiber webs 9, as shown in FIG. 3, are intimately networked Non-woven fabric 15, the underside of which is longitudinally oriented The pile and the top of which consist of a tangled pile.

Die Größe der Dofferwalze 6,8 beeinflußt die Wirrlage. Die Wirrwalze 2 und die Dofferwalze 6 sind hinsichtlich ihrer Lage, d.h. ihrer gegenseitigen Abstände und ihrer Abstände zum Hauptzylinder 1 einstellbar.The size of the doffer roller 6,8 affects the confusion. The Tangled roller 2 and the doffer roller 6 are in terms of their Location, i.e. their mutual distances and their distances adjustable to master cylinder 1.

Anstelle der Kardiersegmente 28 können auch wie bei den Ausführungsbeispielen der Fign. 1 und 2 Arbeiter- und Wenderpaare 20 treten.Instead of the carding segments 28 can also as in the Embodiments of FIGS. 1 and 2 workers and Kender pairs 20 kick.

Das in Fig. 4 dargestellte vierte Ausführungsbeispiel zeigt eine Vlieskrempel, deren grundsätzlicher Aufbau bis zur Haupttrommel 1 den Ausführungsbeispielen der Fign. 1 und 2 entspricht. Mit der Haupttrommel 1 ist eine gleichsinnig mit der Haupttrommel 1 rotierende Wirrwalze 2 sowie separat von der Wirrwalze 2 eine gegenläufig zu der Haupttrommel 1 rotierende Dofferwalze 8 im Eingriff. Die Dofferwalze 8 wird als florbildende Walze verwendet.The fourth embodiment shown in FIG. 4 shows a fleece card, the basic structure of to the main drum 1 the embodiments of FIGS. 1 and 2 corresponds. With the main drum 1 is in the same direction with the main drum 1 rotating random roller 2 and separate from the tangling roller 2 in a direction opposite to the main drum 1 rotating doffer roller 8 in engagement. The doffer roller 8 is used as a pile-forming roller.

Der Wirrwalze 2 ist eine Dofferwalze 6 nachgeschaltet, die den Faserflor 3 von der Wirrwalze 2 übernimmt. Beide Dofferwalzen 6,8 übertragen ihren Faserflor 3,5 auf eine gemeinsame Stauchwalze 10 der Staucheinrichtung 10,12. Auch bei diesem Ausführungsbeispiel werden demzufolge die Faserflore 3,5 unmittelbar nach der Dofferstufe dubliert. Auch dieses Ausführungsbeispiel ermöglicht die Vernetzung von zwei strukturell unterschiedlichen Floren über einen Stauchprozeß.The tangling roller 2 is followed by a doffer roller 6 which takes the batt 3 from the tangled roller 2. Both doffer rollers 6.8 transfer their fiber pile 3.5 to one common upsetting roller 10 of upsetting device 10, 12. Accordingly, in this embodiment, too Fiber pile 3.5 duplicated immediately after the doffer stage. This embodiment also enables networking of two structurally different floras over one Upsetting process.

Claims (21)

  1. Intermediate card for producing a web of fibrous material,
    comprising a main cylinder (1),
    comprising two web-forming rollers (2, 4; 2, 6) in engagement with the main cylinder (1), each taking off one card web from the main cylinder (1),
    comprising a doffer device (6, 8) downstream of the web-forming rollers (2, 4; 2, 6),
    comprising a common roller (6, 10,12) upstream of the take-offdevice (14, 16) doubling at least two card webs (3, 5) taken from the main cylinder (1) by the web-forming rollers (2, 4; 2, 6), and
    comprising a take-off device (14, 16),
    characterized in that
    at least one of the web-forming rollers (2, 4; 2, 6; 2, 8) is a random roller with fittings for producing a random orientation of the card web (3, 5),
    the at least one random roller is associated with centrifugal trough (30, 36), the space between the random roller (2, 4) and the trough sheets (30, 36) forming a centrifugal trough tapering in the working direction, and the trough sheet (30-36) in front of the connecting line between the centers of the random rollers (2, 4) and the doffer roller (6, 8) terminating at a distance of predetermined length so as to form a free card forming zone, and
    the toothing of the fitting of the random rollers (2, 4) has a breast angle of only a few degrees.
  2. Intermediate card according to claim 1, characterized in that the circumferential speed of the main cylinder (1) amounts to more than 500 m/min, preferably to more than 1000 m/min.
  3. Intermediate card according to claim 1 or 2, characterized in that the circumferential speed of the at least one random roller (2, 4) ranges from more than 1 m/min to about 2000 m/min, preferably from 400 to 1500 m/min.
  4. Intermediate card according to any one of claims 1 to 3, characterized in that two web-forming rollers (2, 4) in engagement with and rotating in the same sense as the main cylinder (1), and being independent of each other, each take off one card web (3, 5) from the main cylinder (1), and in that a single doffer roller (6) of the doffer device is in engagement with the two web-forming rollers (2, 4), takes over one card web (3, 5) each from the two rollers (2, 4) and doubles the card webs (3, 5).
  5. Intermediate card according to any one of claims 1 to 3, characterized in that two web-forming rollers (2, 4) in engagement with and rotating in the same sense as the main cylinder (1), and being independent of each other each take off one card web (3, 5) from the main cylinder (1), in that each web-forming roller (2, 4) is associated with a doffer roller (6, 8) rotating in the opposite sense, and in that a single stuffing roller (10) is in engagement with both the doffer rollers (6,8) and takes over one card web (3, 5) each from the two doffer rollers (6, 8) and doubles the card webs.
  6. Intermediate card according to any one of claims 1 to 3, characterized in that a random roller (2) in engagement with and rotating in the same sense as the main cylinder (1) and a doffer roller (8) also used as a web-forming roller and rotating in the opposite sense to the main cylinder (1) each take off a web from the main cylinder, in that the web-forming roller (2, 4) is associated with a doffer roller (6, 8) rotating in the opposite sense, and in that a single stuffing roller (10) takes over, by means of the two doffer rollers (6, 8), a card web (3, 5) each and doubles the card webs.
  7. Intermediate card according to any one of claims 1 to 6, characterized in that the web-forming rollers (2, 4) have different rotational speeds.
  8. Intermediate card according to any one of claims 1 to 7, characterized in that the web-forming rollers (2, 4) have different diameters.
  9. Intermediate card according to any one of claims 1 to 8, characterized in that the main cylinder(1) has a larger diameter than the web-forming rollers (2, 4).
  10. Intermediate card according to any one of claims 1 to 3, characterized in that the doffer device consists of a single doffer roller (6) also used as a web-forming roller (2, 6) and rotating in the opposite sense to the main cylinder (1), and in that the doffer roller (6) is in engagement with both the random roller (2) and the main cylinder (1), takes over one card web (3, 5) each from the two rollers (1, 2) and doubles the card webs.
  11. Intermediate card according to any one of claims 1 to 10, characterized in that at least one doffer roller (6, 8) has a larger diameter than the web-forming rollers (2, 4).
  12. Intermediate card according to claim 10 or 11, characterized in that the doffer roller (6) has a diameter substantially equal to that of the main cylinder (1).
  13. Intermediate card according to any one of claims 1 to 12, characterized in that a stuffing device (10, 12) is arranged between the doffer device (6) and the take-off device (14, 16).
  14. Intermediate card according to any one of claims 1 to 3, characterized in that two web-forming rollers (2, 4) in engagement with and rotating in the same sense as the main cylinder (1), and being independent of each other each take off one card web (3, 5) from the main cylinder (1) and transfer it to one doffer roller (6, 8) of the doffer device each,
    in that a stuffing device (10, 12) is arranged between the doffer device (6) and the take-off device (14, 16),
    in that the stuffing device (10, 12) comprises two first stuffing rollers (10a, 10b), each in engagement with a doffer roller (6, 8), and
    in that a second stuffing roller (12) of the stuffing device takes over the card webs (3, 5) from the first stuffing roller (10a, 10b) and doubles the card webs.
  15. Intermediate card according to any one of claims 1 to 14, characterized in that all the web-forming rollers (2, 4) are random rollers.
  16. Process for producing a nonwoven of fibrous material by means of an intermediate card or the like
    by carding the fibrous material on a main cylinder (1) in a carding step,
    by taking off at least two card webs (3, 5) from the main cylinder (1) by means of at least two rollers (2, 4; 2, 6; 2, 8) independent of each other in a web-forming stage,
    by taking over the card webs (3, 5) in a doffer stage by means of a doffer device (6),
    by taking off the card webs (3, 5) after the doffer stage, and
    by joining the card webs (3, 5) formed in the web-forming stage by uniting the card webs (3, 5) on a common roller to form a cross-linked card web (9),
    characterized by
    the production of the random layer of at least one fiber web (3, 5) by using at least one random roller (2, 4) in connection with a trough sheet (30, 36) associated with each random roller (2, 4) and forming a centrifugal trough, by stuffing the at least one fiber web (3, 5) prior to transferring it the doffer stage (6, 8) by first reducing the space between the at least one random roller (2, 4) and the trough sheet (30, 36) in the working direction, and by suddenly releasing the web in a free card forming zone immediately before transfer to the doffer stage (6, 8), and
    the unification of the fiber webs (3, 5) of the common roller (6, 10, 12) into linked fiber web (9).
  17. Process according to claim 17, characterized by joining the card webs (3, 5) transferred by the rollers (2, 4) on a doffer roller (6) common to all the web-forming rollers (2, 4).
  18. Process according to claim 17, characterized by stuffing the card webs (3, 5) taken over by the doffer device with two doffer rollers (6, 8) and by doubling the card webs (3, 5) transferred by the doffer rollers (6, 8) on a stuffing roller (10) common to the two doffer rollers (6, 8).
  19. Process according to claim 17, characterized by stuffing the card webs (3, 5) taken over by the doffer device with two doffer rollers (6, 8), by means of a first stuffing roller (10a, 10b) each in engagement with a doffer roller (6, 8) each and by doubling the card webs (3, 5) transferred by the first stuffing rollers (10a, 10b) on a single stuffing roller (12) common to the two first stuffing rollers (10a, 10b).
  20. Process according to claim 17, characterized by doubling a card web taken over from the main cylinder (1) and transferred to a doffer roller (6) by a web-forming random roller (2) with a card web taken over directly from the main cylinder (1) by a further doffer roller (8) at the same time used as a web-forming roller on a stuffing roller (10) common to the two doffer rollers (6, 8).
  21. Process according to claim 19, characterized by doubling a card web (3) taken over from the main cylinder (1) by the web-forming roller (2) with a card web (5) taken over directly from the main cylinder (1) by the doffer device (6) at the same time used as a web-forming roller on the doffer device (6).
EP96922010A 1995-06-20 1996-06-18 Intermediate card and a web-production process Expired - Lifetime EP0833965B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19521778A DE19521778A1 (en) 1995-06-20 1995-06-20 Fleece card, as well as processes for fleece production
DE19521778 1995-06-20
PCT/EP1996/002622 WO1997000984A1 (en) 1995-06-20 1996-06-18 Intermediate card and a web-production process

Publications (2)

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EP0833965A1 EP0833965A1 (en) 1998-04-08
EP0833965B1 true EP0833965B1 (en) 2002-09-25

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EP96922010A Expired - Lifetime EP0833965B1 (en) 1995-06-20 1996-06-18 Intermediate card and a web-production process

Country Status (4)

Country Link
US (1) US6073313A (en)
EP (1) EP0833965B1 (en)
DE (2) DE19521778A1 (en)
WO (1) WO1997000984A1 (en)

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US6073313A (en) 2000-06-13
DE19521778A1 (en) 1997-01-02
EP0833965A1 (en) 1998-04-08
WO1997000984A1 (en) 1997-01-09
DE59609729D1 (en) 2002-10-31

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