EP1467011B1 - Vorrichtung zur Herstellung von Vliesstoffen nach dem Airlaidverfahren, enthaltend degressive Saugmittel - Google Patents

Vorrichtung zur Herstellung von Vliesstoffen nach dem Airlaidverfahren, enthaltend degressive Saugmittel Download PDF

Info

Publication number
EP1467011B1
EP1467011B1 EP04370008A EP04370008A EP1467011B1 EP 1467011 B1 EP1467011 B1 EP 1467011B1 EP 04370008 A EP04370008 A EP 04370008A EP 04370008 A EP04370008 A EP 04370008A EP 1467011 B1 EP1467011 B1 EP 1467011B1
Authority
EP
European Patent Office
Prior art keywords
vacuum
machine according
suction
dispersion chamber
downstream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04370008A
Other languages
English (en)
French (fr)
Other versions
EP1467011A1 (de
Inventor
Xavier Catry
Christian Vanbeselaere
Marc Brabant
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asselin Thibeau SAS
Original Assignee
Asselin Thibeau SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asselin Thibeau SAS filed Critical Asselin Thibeau SAS
Publication of EP1467011A1 publication Critical patent/EP1467011A1/de
Application granted granted Critical
Publication of EP1467011B1 publication Critical patent/EP1467011B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D04H1/732—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 by fluid current, e.g. air-lay
    • 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
    • D01G15/465—Doffing arrangements for removing fibres using, or cooperating with, pneumatic means
    • 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
    • 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
    • D04H1/70—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 present invention relates to the field of the manufacture of a nonwoven by aunterlic route designated under the technical name "airlay”. It relates more particularly to an improvement to a machine for the formation of a nonwoven by a crizlic route which allows to significantly increase the speed of production, without prejudice to the quality of the nonwoven formed.
  • the "airlay” technique is essentially characterized by the dispersion in a chamber and the projection on a mobile receiving surface of individual fibers by means of a high velocity air flow, said receiving surface being permeable to air and allowing formation and transport of the nonwoven.
  • nonwoven refers to the web of fibers formed by the "airlay” technique, even though this web has not undergone any particular treatment of binding.
  • the means that are able to create inside the dispersion chamber a flow of air to disperse the fibers inside the chamber and project them on the training surface and transport include suction means disposed below the surface of formation and transport of the nonwoven, which is permeable to air.
  • downstream wall of the dispersion chamber is a plate whose lower edge is applied to the surface of the nonwoven coming out of said chamber, the suction box being disposed over the entire surface which extends to the balance the lower edge of the upstream wall and the lower edge of the downstream wall of the dispersion chamber.
  • upstream and downstream are defined with respect to the direction of movement of the formation and transport surface of the nonwoven.
  • the contact of the lower edge of the downstream wall of the dispersion chamber with the surface fibers of the nonwoven generates friction which is likely to cause irregularities on the nonwoven and all the more so as the speed of movement of the formation and transport surface of the nonwoven is important.
  • the front wall of the dispersion chamber is porous in its lower part, said lower part preferably having a curved profile substantially in a circular arc.
  • This avoids the creation of parasitic air flows caused by the rapid rotation of the transverse cylinder.
  • the thin microperforated sheet which constitutes the lower part of the downstream wall of the dispersion chamber exerts on the nonwoven a low compression force which compresses it slightly.
  • This arrangement prevents the suction flow created by the suction box from occurring an inflow of incoming air which would penetrate inside the dispersion chamber passing between the lower edge of the downstream wall and the upper strand of the formation and transport surface of the nonwoven, such a flow of air being detrimental to the quality of said nonwoven.
  • this contact between the microperforated thin sheet and the surface fibers of the nonwoven at the outlet of the dispersion chamber causes friction which may deform the nonwoven and create irregularities thereon. especially as the speed of movement of the formation and transport surface of the nonwoven is high.
  • the lower, porous part of the front wall of the dispersion chamber may also be constituted by a porous rotary cylinder, in particular a microperforated cylinder.
  • This embodiment avoids friction, when the cylinder is driven at a peripheral speed which is equal to the speed of movement of the formation and transport surface of the nonwoven.
  • parasitic air gaps may remain, although they are less important than in the document EP.0.093.585 .
  • the present invention aims to provide a machine for forming a nonwoven airway, which overcomes the disadvantages of the aforementioned known machines.
  • said suction means are able to carry out a suction in a zone - called suction zone - of the formation and transport surface of the nonwoven which extends under the chamber of dispersion and downstream thereof, with a decrease in the suction speed between the upstream and downstream of said zone.
  • the suction flow is perfectly controlled, including any parasitic flows, so as to obtain a perfectly regular non-woven even at high speed of displacement of the forming and transport surface of said nonwoven.
  • the downstream wall of the dispersion chamber is a plate whose lower edge delimits, with the upper strand of the formation and transport surface of the nonwoven, a passage space whose height is greater than the thickness of the nonwoven coming out of the dispersion chamber.
  • the downstream wall of the dispersion chamber is a rotary cylinder, preferably porous or perforated.
  • This variant is particularly advantageous when it is necessary to compress the fiber web, to evacuate the air contained between the fibers.
  • the suction means consist of a single suction box, in which the suction conditions are degressive from upstream to downstream of the suction zone.
  • the suction means consist of a multi-stage suction box, each stage having separate suction conditions.
  • a first stage having the highest suction speed V1 is placed beneath the dispersion chamber in a main section of the suction zone extending to a distance d preferably from 5 to 20 mm, for example 10 mm - from the lower edge of the downstream wall of the dispersion chamber and at least a second stage, developing a suction speed V2 less than V1, s' extends downstream of the first stage on a secondary section of the suction zone.
  • the suction speed is not uniform over the entire length of the suction chamber, the suction speed being highest in the main section, located upstream of the zone suction, which corresponds to the first suction stage while it is lower in the secondary section of the suction zone which extends beyond the first stage, in particular over the distance d.
  • the machine in the secondary section of the suction zone, comprises a single second stage in which the suction speed gradually decreases, from upstream to downstream of said secondary section.
  • the machine in the secondary section of the suction zone, the machine comprises a plurality N of successive second stages.
  • the suction speed may be constant in each of these N second stages or may be gradually decreasing from upstream to downstream of said stage.
  • the machine in the secondary section, comprises a pressure roller, preferably porous or perforated, arranged transversely above the transport surface of the nonwoven, capable of being applied to the fiber web at the beyond the downstream wall of the dispersion chamber.
  • the pressure roller is placed in line with a partition separating two second stages in the secondary section.
  • a machine for manufacturing a nonwoven by a Vogellic route comprises a conveyor employing a porous conveyor belt 1 which is mounted tensioned on drive rollers.
  • the upper run 1a of this conveyor belt 1 which in the illustrated examples is substantially horizontal, is driven at a predetermined constant speed in the direction of transport indicated by the arrow F.
  • This upper run 1a of the conveyor belt 1 forms an air permeable surface, which allows both the formation and the transport of the nonwoven.
  • This machine also comprises a fiber dispersion chamber 2, which overcomes the upper strand 1a of the conveyor belt 1 and which extends over the entire width of this upper strand 1a.
  • This dispersion chamber 2 comprises an upstream wall 3 and a downstream wall 4, which extend transversely to the direction of displacement F of the conveyor belt 1, as well as two longitudinal walls connecting the two upstream and downstream walls 4, which walls longitudinal dimensions extend parallel to the direction of movement F.
  • the lower edges of the upstream and longitudinal walls 3 are flush with the upper run 1a of the conveyor belt 1, possibly being provided with a seal 5 bearing on said upper run 1a.
  • a suction box which is able to create inside the dispersion chamber 2 an air flow 7, symbolized by arrows, for dispersing the fibers (not shown) to the inside said chamber 2 and project them onto the upper strand 1a.
  • an injection of air through the upper opening of the dispersion chamber can help the dispersion of the fibers.
  • the box 6 extends, under the upper strand 1a, on a suction zone 9, which zone 9 occupies, in width, the width at least of the dispersion chamber 2 and in length a distance D which is greater than the length L of the dispersion chamber 2.
  • the suction conditions used in the box 6 are such that the suction speed - measured in the box 6 - in the downstream portion 9a of the suction zone 9 is lower than the suction speed in the upstream part 9b of the suction zone 9.
  • the suction box 6 is a multi-stage box, comprising a first stage 10 which extends under a so-called main section of the suction zone 9, this main section 9c extending in length over a distance 1 which is less than the length L of the suction zone 9 surmounted by the dispersion chamber 2.
  • this main section 9c extends substantially from the lower edge 11 of the upstream wall 3 of the dispersion chamber 2 (or slightly downstream thereof) to a distance d from the plumb with the lower edge 12 of the downstream wall 4 of the dispersion chamber 2.
  • the suction speed V1 is generated at the level of the first stage 10 and uniform over the entire length 1 of said stage 10.
  • the suction box 6 comprises a second stage 13 which covers the secondary section 9d of the suction zone, which goes beyond the main section 9c previously defined.
  • the conditions used are such that the suction speed decreases progressively over the entire length of the secondary section 9d from the entrance to the exit thereof, as illustrated on the figure 1 by the continuous decrease of arrows V2, symbolizing the suction speed in said secondary section 9d.
  • the secondary section 9d is divided into five subsections 9d 1 , 9d 2 , 9d 3 , 9d 4 , 9d 5 from upstream to downstream of said secondary section 9d.
  • the suction speed V3 is constant. This speed V3 decreases from section to section from upstream to downstream of said secondary section 9d.
  • Each sub 9d 9d section 1 to 5 corresponds to a floor 14 to 18 of suction box 6.
  • the suction velocity V4 is not constant but decreases progressively along the length of each stage 14 to 18 from the upstream to the downstream of each sub-section, as is clearly apparent from FIG. review of the figure 3 .
  • the fourth embodiment which is illustrated in the figure 4 is a combination of the second and third examples previously described, the suction speed V5 gradually decreasing in some stages 14, 16 and 18 while it remains constant in some others 15, 17.
  • the suction box 6 comprises three stages, namely the first stage 10 which corresponds to the main section 9c of the suction zone 9 and two successive second stages 14 and 15 which correspond to the subsections 9d 1 and 9d 2 of the secondary section 9d of the suction zone 9.
  • This number of stages is not exclusive, and can be superior as in the example shown on the figure 2 but it can also be two.
  • the fibers are ejected in an individualized manner inside the dispersion chamber 2, are dispersed by the air flow over the entire horizontal section of said chamber 2 and are projected onto the upper run 1a of the conveyor belt 1. Due to the accumulation of fibers on the upper strand 1a during the movement of the conveyor belt 1, a nonwoven 13 is thus formed which is conveyed to the outside of the dispersion chamber 2 while passing to the right of the downstream wall 4 of said chamber 2, which in the example shown is a plate.
  • the spacing e between the lower edge 12 of said downstream wall 4 and the upper strand 1a is determined so that this spacing is greater than the thickness of the nonwoven formed in the dispersion chamber 2, in the state where it is located when it leaves said chamber 2.
  • This spacing e is a function of the grammage of the nonwoven. It is preferably 5 to 50 mm, for example 30 mm.
  • the flow of air that moves the fibers inside the dispersion chamber 2 is created in particular by the suction box 6, more precisely by the suction generated by the portion of the suction section 9 which is located to the right of the dispersion chamber 2.
  • Other complementary means could be implemented, for example an injection of air at the upper part of the dispersion chamber 2, to help stain the fibers of the cylinder 8.
  • the fibers which are in the dispersion chamber 2 tend to concentrate on the upper strand 1a at the main suction section 9c, so that the nonwoven 13 is almost formed in its final configuration at the outlet of the first stage 10 of the suction box 6.
  • the nonwoven is in some way supported by the second stage 14 of the suction box 6 in which the suction speed V2 is lower than the speed V1 of the first stage.
  • This management takes place while the nonwoven 13 is still inside the dispersion chamber 2, over the distance d then while the nonwoven 13 is out of the dispersion chamber 2.
  • This support which continues at the level of the second stage 14 of the suction box 6 allows there to be no disturbances caused by the passage of the nonwoven under the lower edge 12 of the downstream amount 4 of the dispersion chamber 2, since substantially the same air flow regime is observed on either side of this downstream amount 4.
  • FIG 5 there is a pressure roller 20 which is in line with the partition 21 which separates the two successive stages 14, 15 of the secondary section 9a.
  • This pressure roller 20 is mounted transversely above the upper run 1a of the conveyor belt 1, applying to the nonwoven 13.
  • the distance T between the vertical passing through the lower edge 12 of the wall downstream 4 and the vertical tangent to the rear of the roll 20 is preferably relatively low, preferably 10 to 30 mm.
  • the dispersion chamber 2 has a length L of the order of 60 mm, that of the main section 9c of the order of 50 mm and that of the first stage 9d, the secondary section of the 80 mm order.
  • the distance T is of the order of 20 mm for a roll 20 having a diameter of the order of 100 mm.
  • the nonwoven is then taken in charge by the suction created by the second following stage 15 of the suction box 6, of which the suction speed V3 is lower than the suction speed V2 of the second stage 14.
  • this support can be carried out successively with other second stages 16 to 18 until there is no longer the progressive decrease (by stages in the present example) of the suction in the secondary zone 9d allows there to be a gradual relaxation of the fibers of the nonwoven 13, under the effect of said suction. This makes it possible to obtain the desired result, namely the production of a particularly homogeneous nonwoven, under good industrial conditions, at high speed.
  • the suction speed V1 at the main section 9c of the suction zone 9 was of the order of 30 to 90 m / s.
  • the suction velocities of the five second stages located at the level of the secondary section 9d of the suction zone 9 were respectively equal to or of the order of 0.8 V, 0.6 V, 0.4 V and 0.2 V, knowing that V is the speed of the most upstream first stage and had a value itself lower than V 1 , for example 0.8 V 1 .
  • the first stage V1 speed of the suction box was equipped with its own fan while for the five second stages a single fan allowed to obtain this degression suction speed through the implementation of sheets perforated.
  • the present invention is however not limited to the embodiments which have been described by way of non-exhaustive examples.
  • Any suitable means can be used to obtain the suction velocities in the suction box, whether from a single fan or a plurality of fans, and from complementary elements able to reduce the suction velocity possibly gradually, from upstream to downstream of the suction zone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Reinforced Plastic Materials (AREA)

Claims (16)

  1. Vorrichtung zur Herstellung eines Vliesstoffes nach dem Airlaidverfahren, umfassend:
    - eine Fläche zur Bildung und Beförderung des Vliesstoffes, die luftdurchlässig ist,
    - eine Dispersionskammer, die die Bildungs- und Beförderungsfläche überwölbt,
    - Mittel, die das Zuführen von Fasern, die zur Bildung des Vliesstoffes bestimmt sind, in die Dispersionskammer ermöglichen,
    - unter der Fläche zur Bildung und Beförderung des Vliesstoffes angeordnete Saugmittel, die geeignet sind, um innerhalb der Dispersionskammer einen Luftstrom zu erzeugen, der das Dispergieren der Fasern innerhalb der Kammer und ihr Schleudern auf die Bildungs- und Beförderungsfläche ermöglicht,
    dadurch gekennzeichnet,
    - daß die Saugmittel (6) geeignet sind, um ein Saugen in einem Bereich - Saugbereich (9) genannt - der Fläche zur Bildung und Beförderung (1) des Vliesstoffes auszuführen, der sich unter der Dispersionskammer (2) und stromabwärts davon erstreckt, mit einer Verringerung der Sauggeschwindigkeit von stromaufwärts nach stromabwärts des Bereichs (9).
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Wand (4) stromabwärts der Saugkammer (2) eine Platte ist, wobei der untere Rand (12) der stromabwärts gelegenen Wand (4) mit dem oberen Trumm (1 a) der Fläche zur Bildung und Beförderung des Vliesstoffes (1) einen Durchgangsraum umgrenzt, dessen Höhe größer ist als die Dicke des Vliesstoffes (13), der aus der Dispersionskammer (2) austritt.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Höhe 5 bis 50 mm beträgt.
  4. Vorrichtung nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß der untere Rand der stromabwärts gelegenen Wand durch einen ggf. porösen Drehzylinder gebildet ist.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Saugmittel durch einen einzigen Saugkasten gebildet sind, in dem die Saugbedingungen von stromaufwärts nach stromabwärts des Saugbereichs variieren.
  6. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Saugmittel durch einen mehrstufigen Saugkasten gebildet sind, wobei jede Stufe unterschiedliche Saugbedingungen aufweist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß eine erste Stufe (10), die die höchste Sauggeschwindigkeit (V1) entwickelt, unter der Dispersionskammer (2) in einem Hauptabschnitt (9c) des Saugbereichs (9) angeordnet ist, der sich bis zur Distanz (d) der Senkrechte des unteren Randes (12) der stromabwärts gelegenen Wand (4) der Dispersionskammer (2) erstreckt, und dadurch, daß mindestens eine zweite Stufe (14), die eine Sauggeschwindigkeit V2 entwickelt, die kleiner als V1 ist, sich stromabwärts der ersten Stufe (10) auf einem Nebenabschnitt (9d) des Saugbereichs (9) erstreckt.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Distanz d 5 bis 20 mm beträgt.
  9. Vorrichtung nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, daß sie im Nebenabschnitt (9d) des Saugbereichs (9) eine einzige Stufe umfaßt, in der die Sauggeschwindigkeit (V2) von stromaufwärts bis stromabwärts des Nebenabschnitts (9d) schrittweise abnimmt.
  10. Vorrichtung nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, daß sie im Nebenabschnitt (9d) des Saugbereichs (9) mehrere N zweite aufeinander folgende zweite Stufen (14 bis 18) umfaßt.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Sauggeschwindigkeit (V3) in jeder dieser N zweiten Stufen konstant ist.
  12. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Sauggeschwindigkeit (V4) in jeder der N zweiten Stufen (14 bis 18) von stromaufwärts nach stromabwärts der Stufe schrittweise abnimmt.
  13. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Sauggeschwindigkeit (V5) in bestimmten zweiten Stufen (15, 17) konstant ist und in anderen zweiten Stufen (14, 16, 18) von stromaufwärts nach stromabwärts schrittweise abnimmt.
  14. Vorrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß sie mindestens eine Preßwalze (20) über dem Nebenabschnitt (9d) umfaßt.
  15. Vorrichtung nach Anspruch 10 und 14, dadurch gekennzeichnet, daß die Preßwalze (20) senkrecht zur Schnittsteile (21) zwischen zwei aufeinanderfolgenden zweiten Stufen (14, 15) angeordnet ist.
  16. Vorrichtung nach einem der Ansprüche 14 oder 15, dadurch gekennzeichnet, daß die Preßwalze sich in einer geringen Distanz (T) von der Senkrechten des unteren Randes (12) der stromabwärts gelegenen Wand (4) der Dispersionskammer (2), vorzugsweise in einer Distanz von 10 bis 30 mm, befindet.
EP04370008A 2003-04-01 2004-03-25 Vorrichtung zur Herstellung von Vliesstoffen nach dem Airlaidverfahren, enthaltend degressive Saugmittel Expired - Lifetime EP1467011B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0304048A FR2853331B1 (fr) 2003-04-01 2003-04-01 Machine pour la fabrication d'un non-tisse par voie aeraulique, comportant des moyens pour une aspiration degressive
FR0304048 2003-04-01

Publications (2)

Publication Number Publication Date
EP1467011A1 EP1467011A1 (de) 2004-10-13
EP1467011B1 true EP1467011B1 (de) 2008-07-02

Family

ID=32865380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04370008A Expired - Lifetime EP1467011B1 (de) 2003-04-01 2004-03-25 Vorrichtung zur Herstellung von Vliesstoffen nach dem Airlaidverfahren, enthaltend degressive Saugmittel

Country Status (6)

Country Link
US (1) US7007348B2 (de)
EP (1) EP1467011B1 (de)
AT (1) ATE399894T1 (de)
DE (1) DE602004014669D1 (de)
ES (1) ES2309477T3 (de)
FR (1) FR2853331B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2879628B1 (fr) * 2004-12-16 2007-03-09 Thibeau Soc Par Actions Simpli Procede et dispositif de transport d'un non-tisse, et leur application au transport d'un non-tisse carde ou d'un non-tisse produit par voie aeraulique
EP2298977A1 (de) * 2009-09-17 2011-03-23 The Procter & Gamble Company Faserluftschichtungsverfahren für faserige Strukturen zur Verwendung in saugfähigen Artikeln
JP5629525B2 (ja) * 2010-08-06 2014-11-19 花王株式会社 不織布の嵩増加装置
CN114959956B (zh) * 2022-05-30 2023-10-03 大源无纺新材料（天津）有限公司 一种热风无纺布梳理装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097965A (en) * 1976-08-17 1978-07-04 Scott Paper Company Apparatus and method for forming fibrous structures comprising predominantly short fibers
US4375448A (en) * 1979-12-21 1983-03-01 Kimberly-Clark Corporation Method of forming a web of air-laid dry fibers
US4475271A (en) * 1982-04-29 1984-10-09 Chicopee Process and apparatus for producing uniform fibrous web at high rate of speed
US4432714A (en) * 1982-08-16 1984-02-21 Armstrong World Industries, Inc. Apparatus for forming building materials comprising non-woven webs
AT395610B (de) * 1990-02-12 1993-02-25 Fehrer Ernst Vorrichtung zum herstellen eines faservlieses
AT396791B (de) * 1992-06-26 1993-11-25 Fehrer Ernst Vorrichtung zum herstellen eines vlieses
FR2725216B1 (fr) * 1994-09-30 1996-12-20 Thibeau Et Cie A Dispositif pour detacher et transporter a grande vitesse un voile fibreux en sortie de carde
DE19740338A1 (de) * 1997-09-13 1999-03-18 Truetzschler Gmbh & Co Kg Vorrichtung zum Herstellen eines Faservlieses, z. B. aus Baumwolle, Chemiefasern, Fasermischungen u. dgl.
FR2777575B1 (fr) * 1998-04-17 2000-07-07 Thibeau Procede et installation pour la formation d'un voile fibreux par voie aeraulique
US6499982B2 (en) * 2000-12-28 2002-12-31 Nordson Corporation Air management system for the manufacture of nonwoven webs and laminates
FR2824082B1 (fr) * 2001-04-26 2003-10-10 Thibeau Machine pour la fabrication d'un non-tisse par voie aeraulique, comportant une chambre de dispersion des fibres la paroi avant est poreuse en partie basse

Also Published As

Publication number Publication date
FR2853331A1 (fr) 2004-10-08
FR2853331B1 (fr) 2005-06-24
ES2309477T3 (es) 2008-12-16
ATE399894T1 (de) 2008-07-15
US7007348B2 (en) 2006-03-07
DE602004014669D1 (de) 2008-08-14
EP1467011A1 (de) 2004-10-13
US20040255430A1 (en) 2004-12-23

Similar Documents

Publication Publication Date Title
EP0040145B1 (de) Vorrichtung zum Schneiden langer Fasern, insbesondere von Glasfasern
EP2232075B1 (de) Erweiterte peristaltische pumpe
EP1467011B1 (de) Vorrichtung zur Herstellung von Vliesstoffen nach dem Airlaidverfahren, enthaltend degressive Saugmittel
FR2796052A1 (fr) Dispositif anti-contamination pour le transport de recipients et convoyeur pneumatique equipe d'un tel dispositif
EP1367166B1 (de) Mobiler Transportwagen beim Eintritt zum Vliesleger und Vliesleger ausgerüstet mit einem solchen Transportwagen
FR2920323A1 (fr) Cabine d'application de produits de revetement pulverulent
EP1676942A2 (de) Verfahren zur Wiederverwertung von nicht verarbeiteten Fasern in einer Karde und Karde ausgerüstet mit Mitteln zur Durchführung dieses Verfahrens
EP1290253B1 (de) Vorrichtung zur herstellung eines luftgelegten faservlieses mit faserverteilungskammer deren vorderwand porös ist
BE1006222A3 (fr) Dispositif de fabrication d'un feutre de fibres.
FR3038238A1 (fr) Element separateur pour un separateur de liquide, milieu separateur et separateur de liquide et son procede de fabrication
EP1190132A1 (de) Vorrichtung zur behandlung von folienmaterialen durch druckwasserstrahlen
EP1300492A1 (de) Verfahren und Anlage zur Herstellung eines verdichteten Vliesstoffes und Vorrichtung zur Verdichtung eines Vliesstoffes
EP1009529B1 (de) Verbesserungen an ringwalzenmühlen
EP1367165B1 (de) Saugwalze zur Behandlung eines textilen Faserbandes oder vergleichbares Produkt
BE1005562A4 (fr) Procede et machine pour la production d'un voile de fibres.
EP1384804B1 (de) Verfahren zur Begrenzung der Verschmutzung einer Nadelmachine mit fliegenden Fasern und Nadelmachine dafür
FR2527052A1 (fr) Procede et appareil de hachage du tabac
EP1702874B1 (de) Method and device of transporting a non-woven web with electrostatic charge in at least an area with a dimension smaller than the width of said web
FR3048898A1 (fr) Procede et installation de traitement de panneau ou plaque
FR2766846A1 (fr) Dispositif de formation d'un voile de fibres en bourre, en particulier pour le chargement d'une machine textile telle qu'une carde
FR2705976A1 (fr) Dispositif de nettoyage de rouleaux et/ou cylindres de machines à papier.
FR2885010A1 (fr) Dispositif d'extraction ou de battage des graines, d'epuration et de parallelisation des tiges de matiere vegetale
EP4153517A1 (de) Trennvorrichtung zum entfernen eines profils von einer förderfläche und extrusionsmaschine mit einer solchen trennvorrichtung
FR2774007A1 (fr) Dispositif de filtration d'une suspension contenant des fibres et des fines indesirables
FR2879628A1 (fr) Procede et dispositif de transport d'un non-tisse, et leur application au transport d'un non-tisse carde ou d'un non-tisse produit par voie aeraulique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20050115

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ASSELIN-THIBEAU

17Q First examination report despatched

Effective date: 20070420

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 602004014669

Country of ref document: DE

Date of ref document: 20080814

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: BOVARD AG PATENTANWAELTE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2309477

Country of ref document: ES

Kind code of ref document: T3

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081202

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20090323

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

26N No opposition filed

Effective date: 20090403

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20090316

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20090330

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090312

Year of fee payment: 6

Ref country code: IT

Payment date: 20090319

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090324

Year of fee payment: 6

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

BERE Be: lapsed

Owner name: ASSELIN-THIBEAU

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081003

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101001

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100325

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110415

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110404

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100326

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080702