EP0837163B1 - Apparatus and method for the web production from fiber material - Google Patents

Apparatus and method for the web production from fiber material Download PDF

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Publication number
EP0837163B1
EP0837163B1 EP19960116371 EP96116371A EP0837163B1 EP 0837163 B1 EP0837163 B1 EP 0837163B1 EP 19960116371 EP19960116371 EP 19960116371 EP 96116371 A EP96116371 A EP 96116371A EP 0837163 B1 EP0837163 B1 EP 0837163B1
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EP
European Patent Office
Prior art keywords
roll
calender
woven web
installation
rolls
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EP19960116371
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German (de)
French (fr)
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EP0837163A1 (en
Inventor
Bernhard Bocht
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DILO, JOHANN, PHILIPP
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Individual
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02Carding machines
    • D01G15/12Details
    • D01G15/46Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D01G15/465Doffing arrangements for removing fibres using, or cooperating with, pneumatic means

Definitions

  • the invention relates to a plant for the production of nonwovens of fiber material according to the preamble of the claim 1 as well as a process for the production of nonwovens according to Preamble of claim 13.
  • a vacuumed roller is known from EP-A-0 733 729, the one nonwoven web fed on a conveyor belt transmits one of two calender rolls. The nonwoven web is transferred from a card over the conveyor belt to a calender fed.
  • the nonwoven web must be one Removal part of the card first on a conveyor belt and transferred from the conveyor belt to the vacuumed roller become.
  • a critical transition points at which either Air vortex or due to insufficient guidance of the fleece web the uniformity of the nonwoven web can be impaired can.
  • the invention is therefore based on the object of a system as well as create a process for the production of nonwovens, with which the production speed while maintaining a high fleece uniformity increased can be.
  • the removal part Nonwoven web directly on the first or only vacuumed Roller transmits, and that the only or the last Roll the nonwoven web onto an air-permeable jacket the calender rolls transmits.
  • the invention accordingly sees in an advantageous manner before, between the card and calender one under negative pressure standing roller arrangement with one or more rollers to be provided with an air-permeable jacket.
  • the reels are sucked in at least part of its circumference, on which the nonwoven web obtained from the card or card rests.
  • rollers with an air-permeable jacket leaves a significant increase in production speed to.
  • the transfer of the pile or the nonwoven web to a screen roller has the advantage that when transporting the nonwoven web no critical transition points arise at which either due to air swirls or lack of guidance the nonwoven web affects the uniformity of the nonwoven web can be.
  • the vacuumed screen rollers also have the advantage that the Nonwoven web held to a desired nonwoven web width can be, creating a straight edge.
  • the screen rollers can increase the adhesion on their Shell surface to be structured.
  • the vacuum on the screen rollers can be variably controlled to be an adjustment to production speed and / or to enable the type of fiber used.
  • the acceptance part can also consist of only one Doffer roller exist, so that of the master cylinder Flor taken over the doffer roller as a nonwoven web directly on the first or only roller with air permeable Coat is transferred.
  • the take-off part can consist of a tangled roller and a doffer roller, the doffer roller the Pile on the partially vacuumed roller with air permeable Coat transfers.
  • the take-off part has at least two pile-forming rollers each having a pile from the master cylinder decrease, with the pile on a subordinate, for all of the flore-common rollers are combined to form a nonwoven web are. It is provided that two or more Flore are created in the acceptance section, which are on a subsequent Roll of the take-off part or the arrangement of Rolls with an air-permeable jacket to form a nonwoven web be brought together.
  • At least one of the pile-forming rollers can be one Be a tangled roller.
  • the Flore on one with the pile-forming rollers in engagement existing doffer roller merged into a nonwoven web are.
  • At least two upsetting rollers can be attached to the doffer roller downstream.
  • a transfer roller can the merged pile on the arrangement of rollers with an air-permeable jacket transfer.
  • the only or the last roller of the arrangement of rollers the nonwoven web can be covered with an air-permeable jacket transferred one of the calender rolls.
  • the fleece web on part of the circumference of a calender roll inserted into the nip between the calender rolls. Since the Viesbahn the calender roll on a part touched their circumference and not only in the nip, can a higher heat transfer take place so that high production speeds possible are.
  • the arrangement of rolls with an air-permeable jacket at least three rollers arranged one behind the other. These rollers enable a high transport speed, so that the production speed can be increased can.
  • the first embodiment shown in Fig. 1 only shows the master cylinder 1 and the take-off part 3 the card or card, consisting of two pile-forming Rollers 14, 16 each have a pile 18, 20 from the master cylinder 1 remove, as well as from a doffer roller 24 which duplicates the two sheets 18, 20 to form a nonwoven web 22 become.
  • a full representation of the clutter or card can be found in DE 43 44 226 A, whereby all variants of a card in the system described here can be used.
  • the removal part 3 of the card or card can be very different be designed and deviating, for example 1 only from a doffer roller 24 or a combination of a tangled roller 14 as a pile-forming Roller and a doffer roller 24 exist.
  • the nonwoven web 22 runs on approximately one Quarter of the circumference of the calender roll 4, so that an intense Heat transfer can take place.
  • the screen roller 8 is subjected to negative pressure in its interior, only the one that transports the nonwoven web 22
  • the outer surface is vacuumed while the rest Lateral surface of the screen roller 8 e.g. covered with a sheet 36 is.
  • the nonwoven web 22 at the transfer point between doffer roller 24 and screen roller 8 with negative pressure sucked onto the outer surface of the screen roller 8.
  • the calender roll 4 ends the vacuumed peripheral area, so that the nonwoven web 22 the calender roll 4 can be transferred.
  • Fig. 2 shows an embodiment in which also the pile is duplicated on the doffer roller 24.
  • Upsetting rollers 26, 28 and a transfer roller 30 are provided, which the nonwoven web 22 from the last upsetting roller 28th takes over and transfers to the screen roller 8.
  • the transfer roller 30 can be omitted and the fleece web 22 directly from the last upsetting roller 28 be transferred to the screen roller 8.
  • the last screen roller 12 of this arrangement is the nonwoven web 22 onto the lower calender roll 6 so that the nonwoven web 22nd is introduced from below into the nip 32.
  • Fig. 3 shows an embodiment in which duplication the pile 18, 20 only takes place on the first screen roller 8.
  • the acceptance part 3 is for each pile 18.20 either only from a doffer roller 24.25 or one Combination of a tangled roller 14, 16 with a doffer roller 24, 25 or a combination of a tangled roller 14, 16, a doffer roller 24, 25 and two subsequent ones Upsetting rollers 26, 27, 28, 29, as shown in FIG. 3.
  • the first screen roller 8 can several more screen rollers 10, 12 follow, in the exemplary embodiment of FIG. 3 two screen rollers 8, 12 are shown.
  • the last screen roller 12 leads the nonwoven web 22 from below into the nip 32 of the calender 2.
  • each transfer rollers 30 arranged his.
  • the direction of rotation of the first screen roller 8 can be opposite 3 to the exemplary embodiment, so that in an embodiment with two screen rollers 8, 12 an entry of the nonwoven web 22 from above into the Calender is possible or if three are arranged in a row arranged sieve rollers 8,10,12 an inlet from underneath.

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

Description

Die Erfindung betrifft eine Anlage für die Vliesherstellung aus Fasermaterial nach dem Oberbegriff des Anspruchs 1 sowie ein Verfahren für die Vliesherstellung nach dem Oberbegriff des Anspruchs 13.The invention relates to a plant for the production of nonwovens of fiber material according to the preamble of the claim 1 as well as a process for the production of nonwovens according to Preamble of claim 13.

Mit derartigen Anlagen werden Vliesbahnen mit hoher Produktionsleistung hergestellt. Bei hohen Produktionsgeschwindigkeiten besteht insbesondere bei Leichtvliesen das Problem, daß die Vliesbahn aufgrund der hohen Geschwindigkeiten in ihrer Struktur verändert wird, so daß die Gleichmäßigkeit des Vlieses beeinträchtigt wird.With such systems, nonwoven webs with high production output manufactured. At high production speeds exists especially with light fleeces the problem that the nonwoven web due to the high speeds is changed in its structure so that the uniformity of the fleece is impaired.

Aus der EP-A-0 733 729 ist eine besaugte Walze bekannt, die eine über ein Transportband zugeführte Vliesbahn auf eine von zwei Kalanderwalzen überträgt. Die Vliesbahn wird von einer Karde über das Transportband einem Kalander zugeführt.A vacuumed roller is known from EP-A-0 733 729, the one nonwoven web fed on a conveyor belt transmits one of two calender rolls. The nonwoven web is transferred from a card over the conveyor belt to a calender fed.

Bei der bekannten Anlage muss die Vliesbahn von einem Abnahmeteil der Karde zunächst auf ein Transportband und von dem Transportband wieder auf die besaugte Walze übertragen werden. An den Übergangsstellen zwischen den Walzen und dem Transportband und umgekehrt entstehen kritische Übergangsstellen, an denen entweder durch Luftwirbel oder durch mangelnde Führung der Vliesbahn die Gleichmäßigkeit der Vliesbahn beeinträchtigt werden kann. Diese kritischen Übergangsstellen sind hinderlich für eine Erhöhung der Produktionsgeschwindigkeiten, insbesondere bei Leichtvliesen.In the known system, the nonwoven web must be one Removal part of the card first on a conveyor belt and transferred from the conveyor belt to the vacuumed roller become. At the transition points between the Rollers and the conveyor belt and vice versa critical transition points at which either Air vortex or due to insufficient guidance of the fleece web the uniformity of the nonwoven web can be impaired can. These critical transition points are a hindrance for an increase in production speeds, in particular for light fleeces.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Anlage sowie ein Verfahren für die Vliesherstellung schaffen, mit dem die Produktionsgeschwindigkeit bei Aufrechterhaltung einer hohen Vliesgleichmäßigkeit gesteigert werden kann.The invention is therefore based on the object of a system as well as create a process for the production of nonwovens, with which the production speed while maintaining a high fleece uniformity increased can be.

Zur Lösung dieser Aufgabe dienen die Merkmale des Anspruchs 1 bzw. 13.The features of the claim serve to solve this problem 1 or 13.

Erfindungsgemäß ist vorgesehen, dass das Abnahmeteil die Vliesbahn direkt auf die erste oder einzige besaugte Walze überträgt, und dass die einzige oder die letzte Walze mit luftdurchlässigem Mantel die Vliesbahn auf eine der Kalanderwalzen überträgt.According to the invention it is provided that the removal part Nonwoven web directly on the first or only vacuumed Roller transmits, and that the only or the last Roll the nonwoven web onto an air-permeable jacket the calender rolls transmits.

Die Erfindung sieht demzufolge in vorteilhafter Weise vor, zwischen Karde und Kalander eine unter Unterdruck stehende Walzenanordnung mit einer oder mehreren Walzen mit luftdurchlässigem Mantel vorzusehen. Die Walzen werden dabei zumindest in dem Teil ihres Umfangs besaugt, auf dem die von der Karde oder Krempel erhaltene Vliesbahn aufliegt.The invention accordingly sees in an advantageous manner before, between the card and calender one under negative pressure standing roller arrangement with one or more rollers to be provided with an air-permeable jacket. The reels are sucked in at least part of its circumference, on which the nonwoven web obtained from the card or card rests.

Die Verwendung der Walzen mit luftdurchlässigem Mantel läßt eine erhebliche Erhöhung der Produktionsgeschwindigkeit zu.The use of rollers with an air-permeable jacket leaves a significant increase in production speed to.

Die Übergabe des Flores bzw. der Vliesbahn auf eine Siebwalze hat den Vorteil, daß beim Transport der Vliesbahn keine kritischen Übergangsstellen entstehen, an denen entweder durch Luftwirbel oder durch mangelnde Führung der Vliesbahn die Gleichmäßigkeit der Vliesbahn beeinträchtigt werden kann.The transfer of the pile or the nonwoven web to a screen roller has the advantage that when transporting the nonwoven web no critical transition points arise at which either due to air swirls or lack of guidance the nonwoven web affects the uniformity of the nonwoven web can be.

Dadurch, daß die Siebwalzen besaugt sind, wird ein eventuell störender Luftfilm an der Übergangsstelle zwischen dem Abnahmeteil und der ersten Siebwalze vermieden. Die besaugten Siebwalzen haben ferner den Vorteil, daß die Vliesbahn auf eine gewünschte Vliesbahnbreite gehalten werden kann, wobei eine geradlinige Abschlußkante entsteht. Die Siebwalzen können zur Haftungserhöhung auf ihrer Mantelfläche strukturiert sein.Because the sieve rollers are vacuumed, a possibly annoying air film at the transition point between the removal part and the first screen roller avoided. The vacuumed screen rollers also have the advantage that the Nonwoven web held to a desired nonwoven web width can be, creating a straight edge. The screen rollers can increase the adhesion on their Shell surface to be structured.

Der Unterdruck an den Siebwalzen kann variabel steuerbar sein, um eine Anpassung an die Produktionsgeschwindigkeit und/oder an die eingesetzte Faserart zu ermöglichen.The vacuum on the screen rollers can be variably controlled to be an adjustment to production speed and / or to enable the type of fiber used.

Der Abnahmeteil kann dabei auch aus nur einer einzigen Dofferwalze bestehen, so daß der von dem Hauptzylinder über die Dofferwalze übernommene Flor als Vliesbahn direkt auf die erste oder einzige Walze mit luftdurchlässigem Mantel übertragen wird.The acceptance part can also consist of only one Doffer roller exist, so that of the master cylinder Flor taken over the doffer roller as a nonwoven web directly on the first or only roller with air permeable Coat is transferred.

Alternativ kann der Abnahmeteil aus einer Wirrwalze und einer Dofferwalze bestehen, wobei die Dofferwalze den Flor auf die teilweise besaugte Walze mit luftdurchlässigem Mantel überträgt.Alternatively, the take-off part can consist of a tangled roller and a doffer roller, the doffer roller the Pile on the partially vacuumed roller with air permeable Coat transfers.

Bei einem bevorzugten Ausführungsbeispiel ist vorgesehen, daß der Abnahmeteil mindestens zwei florbildende Walzen aufweist, die jeweils einen Flor von dem Hauptzylinder abnehmen, wobei die Flore auf einer nachgeordneten, für alle Flore gemeinsamen Walze zu einer Vliesbahn zusammengeführt sind. Hierbei ist vorgesehen, daß zwei oder mehr Flore im Abnahmeteil erzeugt werden, die auf einer nachfolgenden Walze des Abnahmeteils oder der Anordnung von Walzen mit luftdurchlässigem Mantel zu einer Vliesbahn zusammengeführt werden.In a preferred embodiment, that the take-off part has at least two pile-forming rollers each having a pile from the master cylinder decrease, with the pile on a subordinate, for all of the flore-common rollers are combined to form a nonwoven web are. It is provided that two or more Flore are created in the acceptance section, which are on a subsequent Roll of the take-off part or the arrangement of Rolls with an air-permeable jacket to form a nonwoven web be brought together.

Dabei kann mindestens eine der florbildenden Walze eine Wirrwalze sein.At least one of the pile-forming rollers can be one Be a tangled roller.

Bei einem Ausführungsbeispiel ist vorgesehen, daß die Flore auf einer mit den florbildenden Walzen im Eingriff befindlichen Dofferwalze zu einer Vliesbahn zusammengeführt sind.In one embodiment it is provided that the Flore on one with the pile-forming rollers in engagement existing doffer roller merged into a nonwoven web are.

An der Dofferwalze können mindestens zwei Stauchwalzen nachgeschaltet sein.At least two upsetting rollers can be attached to the doffer roller downstream.

Eine Übertragungswalze kann die zusammengeführten Flore auf die Anordnung von Walzen mit luftdurchlässigem Mantel übertragen.A transfer roller can the merged pile on the arrangement of rollers with an air-permeable jacket transfer.

Die einzige oder die letzte Walze der Anordnung von Walzen mit luftdurchlässigem Mantel kann die Vliesbahn auf eine der Kalanderwalzen übertragen. Dabei wird die Vliesbahn auf einem Teil des Umfangs der einen Kalanderwalze in den Walzenspalt zwischen den Kalanderwalzen eingeführt. Da die Viesbahn die Kalanderwalze auf einen Teil ihres Umfangs berührt und nicht erst im Walzenspalt, kann eine höhere Wärmeübertragung erfolgen, so daß hohe Produktionsgeschwindigkeiten möglich sind.The only or the last roller of the arrangement of rollers the nonwoven web can be covered with an air-permeable jacket transferred one of the calender rolls. The fleece web on part of the circumference of a calender roll inserted into the nip between the calender rolls. Since the Viesbahn the calender roll on a part touched their circumference and not only in the nip, can a higher heat transfer take place so that high production speeds possible are.

Bei einem Ausführungsbeispiel ist vorgesehen, daß die Anordnung von Walzen mit luftdurchlässigem Mantel aus mindestens drei hintereinander angeordneten Walzen besteht. Diese Walzen ermöglichen eine hohe Transportgeschwindigkeit, so daß die Produktionsgeschwindigkeit erhöht werden kann.In one embodiment it is provided that the arrangement of rolls with an air-permeable jacket at least three rollers arranged one behind the other. These rollers enable a high transport speed, so that the production speed can be increased can.

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
eine schematische Darstellung eines ersten Ausführungsbeispiels,
Fig. 2
eine schematische Darstellung eines zweiten Ausführungsbeispiels mit drei Siebwalzen, und
Fig. 3
eine schematische Darstellung eines dritten Ausführungsbeispiels bei dem zwei Flore auf einer Siebwalze vereinigt werden.
Show it:
Fig. 1
1 shows a schematic illustration of a first exemplary embodiment,
Fig. 2
is a schematic representation of a second embodiment with three screen rollers, and
Fig. 3
a schematic representation of a third embodiment in which two sheets are combined on a screen roller.

Das in Fig. 1 dargestellte erste Ausführungsbeispiel zeigt lediglich den Hauptzylinder 1 und den Abnahmeteil 3 der Karde oder Krempel, bestehend aus zwei florbildenden Walzen 14,16, die jeweils einen Flor 18,20 von dem Hauptzylinder 1 abnehmen, sowie aus einer Dofferwalze 24, auf der die beiden Flore 18, 20 zu einer Vliesbahn 22 dubliert werden. Eine vollständige Darstellung der Krempel oder Karde kann der DE 43 44 226 A entnommen werden, wobei sämtlich dort dargestellte Varianten einer Krempel in der hier beschriebenen Anlage verwendet werden können.The first embodiment shown in Fig. 1 only shows the master cylinder 1 and the take-off part 3 the card or card, consisting of two pile-forming Rollers 14, 16 each have a pile 18, 20 from the master cylinder 1 remove, as well as from a doffer roller 24 which duplicates the two sheets 18, 20 to form a nonwoven web 22 become. A full representation of the clutter or card can be found in DE 43 44 226 A, whereby all variants of a card in the system described here can be used.

So kann der Abnahmeteil 3 der Karde oder Krempel sehr unterschiedlich gestaltet sein und beispielsweise auch abweichend von Fig. 1 nur aus einer Dofferwalze 24 oder aus einer Kombination einer Wirrwalze 14 als florbildende Walze und einer Dofferwalze 24 bestehen. The removal part 3 of the card or card can be very different be designed and deviating, for example 1 only from a doffer roller 24 or a combination of a tangled roller 14 as a pile-forming Roller and a doffer roller 24 exist.

Bei dem Ausführungsbeispiel der Fig. 1 wird die Vliesbahn 22 von der Dofferwalze 24 auf eine Walze mit luftdurchlässiger Mantelfläche, z.B. eine Siebwalze 8 übertragen, die ihrerseits die Vliesbahn 22 auf die obere Kalanderwalze 4 des Kalanders 2 überträgt. Dabei wird die Vliesbahn 22 auf dem Umfang der Kalanderwalze 4 von oben in den Walzenspalt 32 zwischen den Kalanderwalzen 4,6 hineingeführt. Die Vliesbahn 22 verläuft auf etwa einem Viertel des Umfangs der Kalanderwalze 4, so daß ein intensiver Wärmeübergang erfolgen kann.In the embodiment of FIG. 1, the nonwoven web 22 from the doffer roller 24 to a roller with air permeable Lateral surface, e.g. transfer a screen roller 8, which in turn the nonwoven web 22 on the upper calender roll 4 of the calender 2 transmits. The fleece web 22 on the circumference of the calender roll 4 from above in introduced the nip 32 between the calender rolls 4,6. The nonwoven web 22 runs on approximately one Quarter of the circumference of the calender roll 4, so that an intense Heat transfer can take place.

Die Siebwalze 8 ist in ihrem Inneren mit Unterdruck beaufschlagt, wobei lediglich die die Vliesbahn 22 transportierende Mantelfläche besaugt ist, während die übrige Mantelfläche der Siebwalze 8 z.B. mit einem Blech 36 abgedeckt ist. Somit wird die Vliesbahn 22 an der Übergabestelle zwischen Dofferwalze 24 und Siebwalze 8 mit Unterdruck auf die Mantelfläche der Siebwalze 8 angesaugt. An der Übergangsstelle zu der Kalanderwalze 4 endet dabei der besaugte Umfangsbereich, so daß die Vliesbahn 22 auf die Kalanderwalze 4 übertragen werden kann.The screen roller 8 is subjected to negative pressure in its interior, only the one that transports the nonwoven web 22 The outer surface is vacuumed while the rest Lateral surface of the screen roller 8 e.g. covered with a sheet 36 is. Thus, the nonwoven web 22 at the transfer point between doffer roller 24 and screen roller 8 with negative pressure sucked onto the outer surface of the screen roller 8. On the transition point to the calender roll 4 ends the vacuumed peripheral area, so that the nonwoven web 22 the calender roll 4 can be transferred.

Fig. 2 zeigt ein Ausführungsbeispiel, bei dem ebenfalls ein Dublieren der Flore auf der Dofferwalze 24 erfolgt. Zwischen der Siebwalze 8 und der Dofferwalze 24 sind zwei Stauchwalzen 26,28 und eine Übertragungswalze 30 vorgesehen, die die Vliesbahn 22 von der letzten Stauchwalze 28 übernimmt und auf die Siebwalze 8 überträgt.Fig. 2 shows an embodiment in which also the pile is duplicated on the doffer roller 24. There are two between the screen roller 8 and the doffer roller 24 Upsetting rollers 26, 28 and a transfer roller 30 are provided, which the nonwoven web 22 from the last upsetting roller 28th takes over and transfers to the screen roller 8.

Alternativ kann die Übertragungswalze 30 wegfallen und die Vliesbahn 22 direkt von der letzten Stauchwalze 28 auf die Siebwalze 8 übertragen werden. Alternatively, the transfer roller 30 can be omitted and the fleece web 22 directly from the last upsetting roller 28 be transferred to the screen roller 8.

Bei diesem Ausführungsbeispiel sind insgesamt drei Siebwalzen 8,10,12 vorgesehen, wobei wie bei dem vorherigen Ausführungsbeispiel der Einlauf der Vliesbahn 22 in den Kalander 2 von oben her erfolgt. Die Siebwalzen 8,10,12 sind wiederum nur in dem Teil der Umfangsfläche von innen besaugt, auf dem die Vliesbahn 22 aufliegt. Die übrigen Umfangsflächen sind in geeigneter Weise, z.B. mit einem Blech 36 abgedeckt.In this embodiment there are a total of three screen rollers 8,10,12 provided, as in the previous Embodiment of the entry of the nonwoven web 22 in the Calender 2 is done from above. The sieve rollers 8,10,12 are in turn only in the part of the peripheral surface from the inside vacuumed, on which the nonwoven web 22 rests. The remaining Circumferential surfaces are suitably e.g. with a Sheet 36 covered.

Alternativ zu diesem Ausführungsbeispiel ist es auch möglich, nur eine bzw. zwei Siebwalzen 8,10 vorzusehen. Bei einem Ausführungsbeispiel mit zwei Siebwalzen überträgt die letzte Siebwalze 12 dieser Anordnung die Vliesbahn 22 auf die untere Kalanderwalze 6, so daß die Vliesbahn 22 von unten in den Walzenspalt 32 eingeführt wird.As an alternative to this exemplary embodiment, it is also possible to provide only one or two screen rollers 8,10. at transmits an embodiment with two screen rollers the last screen roller 12 of this arrangement is the nonwoven web 22 onto the lower calender roll 6 so that the nonwoven web 22nd is introduced from below into the nip 32.

Fig. 3 zeigt ein Ausführungsbeispiel, bei dem ein Dublieren der Flore 18,20 erst auf der ersten Siebwalze 8 erfolgt. Der Abnahmeteil 3 besteht dabei für jeden Flor 18,20 entweder nur aus einer Dofferwalze 24,25 oder einer Kombination aus einer Wirrwalze 14,16 mit einer Dofferwalze 24, 25 oder einer Kombination aus einer Wirrwalze 14, 16, einer Dofferwalze 24,25 und zwei nachfolgenden Stauchwalzen 26,27;28,29, wie in Fig. 3 dargestellt. Der ersten Siebwalze 8 können mehrere weitere Siebwalzen 10,12 folgen, wobei in dem Ausführungsbeispiel der Fig. 3 zwei Siebwalzen 8,12 dargestellt sind. Die letzte Siebwalze 12 führt die Vliesbahn 22 von unten in den Walzenspalt 32 des Kalanders 2 ein.Fig. 3 shows an embodiment in which duplication the pile 18, 20 only takes place on the first screen roller 8. The acceptance part 3 is for each pile 18.20 either only from a doffer roller 24.25 or one Combination of a tangled roller 14, 16 with a doffer roller 24, 25 or a combination of a tangled roller 14, 16, a doffer roller 24, 25 and two subsequent ones Upsetting rollers 26, 27, 28, 29, as shown in FIG. 3. The first screen roller 8 can several more screen rollers 10, 12 follow, in the exemplary embodiment of FIG. 3 two screen rollers 8, 12 are shown. The last screen roller 12 leads the nonwoven web 22 from below into the nip 32 of the calender 2.

Alternativ zu dem in Fig. 3 gezeigten Ausführungsbeispiel können zwischen den Stauchwalzen 28 und 29 und der Siebwalze 8 jeweils noch Übertragungswalzen 30 angeordnet sein. Die Drehrichtung der ersten Siebwalze 8 kann entgegengesetzt zu dem Ausführungsbeipiel der Fig. 3 verlaufen, so daß bei einer Ausführungsvariante mit zwei Siebwalzen 8,12 ein Einlauf der Vliesbahn 22 von oben in den Kalander ermöglicht wird bzw. bei Anordnung von drei hintereinander angeordneten Siebwalzen 8,10,12 ein Einlauf von unten.As an alternative to the exemplary embodiment shown in FIG. 3 can between the upsetting rollers 28 and 29 and the screen roller 8 each transfer rollers 30 arranged his. The direction of rotation of the first screen roller 8 can be opposite 3 to the exemplary embodiment, so that in an embodiment with two screen rollers 8, 12 an entry of the nonwoven web 22 from above into the Calender is possible or if three are arranged in a row arranged sieve rollers 8,10,12 an inlet from underneath.

Gemäß einer weiteren Alternative ist es auch möglich, abweichend von Fig. 3 nur eine einzige Siebwalze 8 vorzusehen.According to a further alternative, it is also possible to deviate 3 to provide only a single screen roller 8.

Claims (17)

  1. An installation for producing non-wovens from fiber material, comprising at least one card or stripper with a main cylinder (1) and a doffer portion (3) downstream of the main cylinder (1) and having at least one roll, as well as one calender (2) with at least two calender rolls (4, 6), which calendar transfers the non-woven web (22), which consists of at least one fleece (18, 20), from one roll to one of the calender rolls (4, 6), said one roll, e.g. a screen roll (8, 10, 12), having an air-permeable mantle with at least a portion of the circumference being sucked from inside,
    characterized in that
    the doffer (3) transfers the non-woven web (22) directly onto the first or only sucked roll (8), and in that the only or the last roll (8, 12) having an air-permeable mantle transfers the non-woven web (22) onto one of the calender rolls (4, 6).
  2. The installation of claim 1, wherein the doffer portion (3) is a doffer roller (24, 25).
  3. The installation of claim 1, wherein the doffer portion (3) consists of a random roll (14, 16) meshing with the main cylinder (1) and a doffer roll (24, 25) meshing with the random roll (14, 16).
  4. The installation of claim 1, wherein the doffer portion (3) has at least two fleece-forming rolls (14, 16) that each take one fleece (18, 20) from the main cylinder (1), the fleeces (18, 20) being converged on a posterior roll (24, 25, 8) common to all fleeces (18, 20) so as to form a non-woven web (22).
  5. The installation of claim 4, wherein at least one of the fleece-forming rolls (14, 16) is a random roll.
  6. The installation of claim 4 or 5, wherein the fleeces (18, 20) are converged into a non-woven web (22) on a doffer roll (24) meshing with the fleece-forming rolls (14, 16).
  7. The installation of claim 6, wherein the doffer roll (24, 25) is followed by at least two stuffing rolls (26, 27, 28, 29).
  8. The installation of one of claims 4 to 7, wherein a transfer roll (30) transfers the converged fleeces (18, 20) to the at least one roll (8) with an air-permeable mantle.
  9. The installation of one of claims 4 to 7, wherein the fleeces (18, 20) are converged into a non-woven web (22) on the single or the first roll (8) with an air-permeable mantle.
  10. The installation of one of claims 1 to 9, wherein, with two vertically superposed calender rolls (4, 6), the non-woven web (22) enters the roll gap (32) between the calender rolls (4, 6) from above on the circumference of the upper calender roll (4).
  11. The installation of one of claims 1 to 9, wherein, with two vertically superposed calender rolls (4, 6), the non-woven web (22) enters the roll gap (32) between the calender rolls (4, 6) from below on the circumference of the upper calender roll (6).
  12. The installation of claims 1 to 11, wherein at least three successive rolls (8, 10, 12) with an air-permeable mantle.
  13. A process for producing non-wovens from fiber material using a card or stripper and a calender (2) downstream of the card or stripper
    by producing at least one fleece (18, 20) with at least one card or stripper, and
    by supplying the calender (2) with a non-woven web (22) consisting of a single or a plurality of fleeces (18, 20), the non-woven web (22) of at least one fleece (18, 20) is transferred to one of two calender rolls (4, 6) of the calender (2) by at least one roll (8, 10, 12) with an air-permeable mantle and sucked at least over a part of its circumference,
    characterized in that
    the non-woven web (22) is transferred directly to the first or single sucked roll (8) by rolls (24, 30, 36) of a doffer portion (3) of the card or stripper.
  14. The method of claim 13, wherein a plurality of fleeces (18, 20) are converged to one non-woven web (22) on a first roll (8) with an air-permeable mantle.
  15. The method of claims 13 or 14, wherein the non-woven web (22) is guided into a roll gap (32) between the calender rolls (4, 6) on a part of the circumference of the calender roll (4, 6).
  16. The method of claim 15, wherein the non-woven web (22) is guided into a roll gap (32) from below on the circumference of the lower calender roll (6).
  17. The method of claim 15, wherein the non-woven web (22) is guided into a roll gap (32) from above on the circumference of the upper calender roll (4).
EP19960116371 1996-10-11 1996-10-11 Apparatus and method for the web production from fiber material Expired - Lifetime EP0837163B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19960116371 EP0837163B1 (en) 1996-10-11 1996-10-11 Apparatus and method for the web production from fiber material

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Application Number Priority Date Filing Date Title
EP19960116371 EP0837163B1 (en) 1996-10-11 1996-10-11 Apparatus and method for the web production from fiber material

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EP0837163A1 EP0837163A1 (en) 1998-04-22
EP0837163B1 true EP0837163B1 (en) 2002-06-19

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813341A1 (en) * 1998-03-26 1999-09-30 Truetzschler Gmbh & Co Kg Carding machine device for production of a fiber web
DE19916227A1 (en) * 1999-04-10 2000-11-02 Merlin Mikrobiolog Diag Gmbh Genotypic classification of bacteria, useful e.g. for diagnosis, based on variations in the sequence of the gyr and par genes
EP1502973B1 (en) * 2003-07-29 2007-09-19 Spinnbau GmbH Carding machine and process for producing a fibre-web
FR3064649B1 (en) 2017-03-28 2019-06-14 N.Schlumberger FIBER CARDING MACHINE FOR MANUFACTURING NON-WOVEN MATERIAL AND METHOD FOR IMPLEMENTING SUCH A MACHINE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987779A (en) * 1957-02-05 1961-06-13 Kawashima Kanichi Doffing process and apparatus for the card by action of air
DE3413629C2 (en) * 1983-05-05 1986-05-07 Ernst Dr. Linz Fehrer Device for the production of nonwovens
DE3410443C2 (en) * 1984-03-22 1992-01-23 Spinnbau GmbH, 2820 Bremen Device for introducing a pile brought from a card via a conveyor belt into a calender
IN171142B (en) * 1987-03-19 1992-08-01 Japan Cotton Technical And Eco
DE4344226A1 (en) 1993-12-23 1995-06-29 Hollingsworth Gmbh Fleece card, as well as processes for fleece production
FR2732042B1 (en) * 1995-03-22 1997-06-13 Thibeau & Cie Sa A SUCTION CYLINDER ALLOWS THE TRANSFER OF A FIBROUS VEIL BETWEEN A CONVEYOR BELT AND TWO CALENDER CYLINDERS

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