WO2004106604A1 - Procede et distributeur de fibres permettant la production de fibres par procede « air-laid » - Google Patents

Procede et distributeur de fibres permettant la production de fibres par procede « air-laid » Download PDF

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Publication number
WO2004106604A1
WO2004106604A1 PCT/DK2004/000370 DK2004000370W WO2004106604A1 WO 2004106604 A1 WO2004106604 A1 WO 2004106604A1 DK 2004000370 W DK2004000370 W DK 2004000370W WO 2004106604 A1 WO2004106604 A1 WO 2004106604A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibres
wings
nits
fibre
sec
Prior art date
Application number
PCT/DK2004/000370
Other languages
English (en)
Inventor
Jens Ole Bröchner ANDERSEN
Original Assignee
M & J Fibretech A/S
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 M & J Fibretech A/S filed Critical M & J Fibretech A/S
Priority to MXPA05012869A priority Critical patent/MXPA05012869A/es
Priority to EP04734995.6A priority patent/EP1633912B1/fr
Priority to CN2004800147176A priority patent/CN1795296B/zh
Priority to BRPI0410699-7A priority patent/BRPI0410699A/pt
Priority to PL04734995T priority patent/PL1633912T3/pl
Priority to DK04734995.6T priority patent/DK1633912T3/da
Priority to JP2006529640A priority patent/JP2006529006A/ja
Priority to CA2525289A priority patent/CA2525289C/fr
Publication of WO2004106604A1 publication Critical patent/WO2004106604A1/fr
Priority to US11/265,718 priority patent/US20060055072A1/en

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • 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
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—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

Definitions

  • the invention relates to a method and a fibre distributor for air-laying fibres on an endless, air pervious forming wire in a plant for producing non-woven webs for e.g., absorbent core material for feminine hygiene articles, incontinence articles, diapers, table top napkins, - hospital products such as bed protection sheets, wipes, and towels .
  • the fluff which is usually employed for products of this nature, is fluff of relatively short cellulose fibres, of relatively long synthetic fibres, or of a blend of such fibres.
  • Other materials like e.g. SAP (Super Absorbent Powder) can be mixed into the fluff.
  • the fibre distributor comprises a forming head, which is placed above the forming wire and has a perforated bottom and at least one row of rotateable wings situated at a distance above said bottom.
  • the fibres supplied to the forming head are, during production, swept along by rows of wings in an air stream in
  • a suction aggregate placed below the forming wire, simultaneously generates a second air stream through the openings in the perforated bottom of the fibre distributor and through the forming wire, whereby fibres entrained in the air stream are successively deposited in a layer on the upper part of the forming wire.
  • Such a fibre distributor is known from the applicant's US patent No. 5.527.171, which is included in the present application as reference.
  • the relatively long synthetic fibres are especially inclined to form nits with other similar or differing types of fibres while being swept along in the air stream by the rows of wings in the fibre distributor.
  • Nits are small tangled bundles of fibres, which can be quite hard and difficult to open even when they are recirculated back to e.g. a hammer mill.
  • the nits contribute neither to the volume, the quality, nor the strength of the non-woven webs. The generation of nits during production of the webs should therefore be kept to as low a level as possible.
  • the plants should be operated with as high a velocity of the air stream along the rows of wings as possible.
  • the velocity should, on the other hand, also be very low in order to keep the contents of fibres per unit of area of the finished non-woven web, which are reduced to nits, to as low a level as possible.
  • a fibre distributor of the kind named in the preamble which has a higher production capacity than hitherto known.
  • a fibre distributor of the kind named in the preamble which during operation generates fewer nits than hitherto known.
  • a fibre distributor of the kind named in the preamble which during operation generates fewer nits than hitherto known and at a higher rate of production than hitherto known.
  • a fibre distributor of the kind named in the preamble which is arranged to, during operation, regulate the process in such a manner that a minimum of nits are generated.
  • a method of the kind named in the preamble by which it is possible to obtain a higher production capacity of a fibre distributor than hitherto known In a sixth aspect of the invention is provided a method of the kind named in the preamble by which it is possible to operate a fibre distributor such that lesser nits than hitherto known are generated.
  • a seventh aspect of the invention is provided a method of the kind named in the preamble by which lesser nits than hitherto known are generated at a higher rate of production than hitherto known.
  • an eighth aspect of the invention is provided a method of the kind named in the preamble by which the process can be regulated in such a manner that a minimum of nits are generated.
  • the fibre distributor is, according to the invention, arranged for regulating the speed of rotation of the wings into an interval of speeds around an optimal speed where the fibres inclination to form nits changes from being lesser to being larger when increasing the rotation speed of the wings.
  • Said optimal speed of rotation of the wings can in practise vary depending on the prevailing conditions of the fibre structure and fibre composition and also of the production parameters of the fibre distributor.
  • the fibre distributor could therefore be arranged to regulate the speed of rotation of the wings into an interval of speeds of rotation, which could include speeds, which by certain conditions are not completely optimal.
  • This interval can be around an average speed of rotation and the regulation can be carried out in agreement only with the composition of the fibres and the arrangement of the actual fibre distributor. That means that the speed of rotation of the wings doesn't need to be optimal all the time, since the optimal speed can vary as explained above .
  • the speed of rotation of the wings can, in another embodiment according to the invention, be optimal all the time by continually regulating the speed to the speed, which at a given moment is optimal. Thereby it advantageously is obtained that the loss of fibres due to the formation of nits, is as low as possible.
  • This embodiment comprises the steps of detecting the amount of nits per unit of area of the fibre layer on the forming wire or in the resulting non-woven web; sending signals representing the results of the detecting as input to a computer; using this input to calculate, by means of a program in the computer, a value which represents an optimal rotation speed where the number of nits at a given moment are small or smallest; and sending signals representing this value as output from the computer to order the wings to rotate with rotating speeds represented by said value.
  • the fibre distributor according to the invention has in this way been self-regulating and will therefore, during operation, automatically produce non-woven webs with a minimum of loss of fibres and at the same time also with an extremely high rate of production.
  • Fig. 1 shows schematically, seen from the side, a fibre distributor according to the invention for air-laying fibres on an endless wire by means of a forming head having a perforated bottom and rotateable wings for sweeping the fibres along said bottom during operation,
  • Fig. 2 shows the same, seen from above,
  • Fig. 3 shows in an enlarged scale a fragment of a non-woven web.
  • Fig. 4 are graphs showing the number of nits per unit of area of a non-woven web and also the output per wing per unit of time as a function of the velocity at which the fibres are swept along the perforated bottom of the forming head
  • Fig. 5 is a block diagram of a controlling system for the air- laying process carried out by means of the fibre distributor shown in fig. 1 and 2.
  • the fibre distributor 1 comprises a forming head 2 with an inlet 3 for the cellulose fibres 4 and another inlet 5 for the synthetic fibres 6. These inlets 3,5 admit the respective fibres 4,6 to enter the forming head in air streams in the direction of the arrows shown.
  • the forming head has a perforated bottom 7 with openings 8. Below the bottom is arranged an endless, air pervious forming wire 9 running, during production, over rolls 10 in the direction shown by the arrow. Only part of said forming wire is shown in fig. 1 and 2.
  • An evacuating pump 12 serves for producing a negative pressure in the suction box via an air duct 13.
  • the wings are, during operation of the fibre distributor, rotated with such a speed of rotation that the supplied fibres are swept along the rows of wings in a first air stream, which is generated by the rotating wings, thereby distributing the fibres all over the bottom as illustrated in fig. 2 with the arrows .
  • the fibres in the first air stream are, by means of the suction box and the evacuating pump, successively sucked down through the openings 8 in the perforated bottom 7 entrained in the generated second air stream, thereby depositing the fibres in a layer 16 on the upper part 17 of the forming wire.
  • the forming wire transports this layer into the direction of the arrow for being further treated in the subsequent parts of the associated plant (not shown) in such a way that the desired non-woven web is formed.
  • the synthetic fibres 6 are usually supplied as staple fibres, while the cellulose fibres 4 are supplied in the form of a fibre roll (not shown) , which is defibrated to fluff by a hammer mill (not shown) .
  • Fig. 3 illustrates schematically in a larger scale a fragment of a non-woven web 18, which contains synthetic fibres 6 and cellulose fibres . As it appears from the figure are the cellulose fibres formed with protuberances 19.
  • the non-woven web also contains cellulose nits 20 consisting alone of cellulose fibres and compound nits 21 consisting of both cellulose fibres 4 and synthetics fibres 6.
  • Nits are small tangled fibre bundles, which decrease the quality of the non-woven web.
  • Another disadvantage is that the nits exist in a very compact form. It is therefore necessary to increase the supply of fibres by a quantity of fibres corresponding approximately to the mass of fibres tied up in the nits, thereby increasing the cost of producing the web.
  • the fibre roll contains some nits already from the start. During the defibration process some of these fibres are opened and formed to good fibres . But at the same time some other fibres are formed to nits in a normally larger scale than the quantity of fibres tied up in nits, which are opened. The percentage of nits in the defibrated fluff also increases with the defibrating speed, say from about 1% to about 1,4%.
  • the cellulose fibres 20 act as a kind of nucleus for forming the compound nits 21.
  • the protuberances 19 play an important part in this connection in that they are capable of catching the synthetic fibres .
  • the nits show a tendency to grow during the air-laying process. Having attained a certain size, the nits then tend to split up into two or more nits, which then acts as new nucleuses for forming still more nits.
  • the producer of the webs is in this way reduced to come to a compromise where the quality and the price of the product and also the utilisation of the potential capacity of the plant are very far from being optimal .
  • the figure shows with full line the number of nits pr. m 2 (n/m 2 ) in the finished web as function of the velocity v
  • the web produced in the example had a weight of 0,120 kg/m 2 and was composed of 80% cellulose fibres and 20% synthetic fibres.
  • the average length of the cellulose fibres was about 2 mm, while the average length of the synthetic fibres was about 6 mm.
  • the wings in a row were, as illustrated with the arrows in fig. 2, rotated in the same direction while the wings in two adjacent rows were rotated in opposite directions, whereby the fibres were swept along the perforated bottom and evenly dispersed over the area of this.
  • the perforated bottom was of the type described in the applicant's patent application WO 9-9/54537, "a sifting net for a fibre distributor".
  • the mesh size of the net was 4.
  • the above-mentioned specifications are common for non-woven webs used for e.g. incontinence articles and also for existing production plants.
  • the normal velocity of the first air stream used for producing said non-woven web was 3 m/sec. At this velocity the number of nits pr. m 2 was found to be 500 n/m with an output per wing per hour of 12 kg/w/h.
  • the wings rotated with such a rotation speed that the velocity of the first air stream is between 9 m/sec and 16 m/sec and especially between 11 m/sec and 14 m/sec.
  • the wings rotated with such a rotation speed that the velocity of the first air stream is between 5 m/sec and 26 m/sec, preferentially between 8 m/sec and 17 m/sec, and especially between 10 m/sec and 15 m/sec.
  • Fig. 4 also shows that the contents of nits in the finished non-woven web increases from 67 n/m 2 at a velocity of 1,0 m/sec up to a maximum of 583 n/m 2 at a velocity of 4,4 m/sec. After that the nits contents decreases to a minimum of 60 n/m 2 at a velocity of 12,7 m/sec for thereafter to increase again.
  • a preferred embodiment of the invention is the mutual distance between each of two neighbouring rows of wings the mutual distance between two wings in a row plus between 50 mm and 135 mm, especially between 75 mm and 105 mm.
  • the fibre distributor therefore is equipped with a regulator for regulating the velocity of the first air stream in an interval around an average optimal velocity.
  • Said interval has according to the invention a size between 0.5 and 1.5, preferentially between 0.75 and 1.25 and especially between 0.9 and 1.1 times the rotation speed of the wings generating said average optimal velocity.
  • the regulating of the velocity of the first air stream can advantageously be performed automatically by means of a controlling system according to the invention, which schematically is illustrated by means of the block diagram shown in fig. 5.
  • This system comprises a detector 22, which is connected to a computer 23, which again is connected to an actuator 24 for rotating the wings and also to actuators for driving other functions of the plant, which possibly should vary when varying the velocity of the first air stream.
  • actuators 25, 26, 27, 28 and 29 are shown for driving the functions of feeding the roll of cellulose fibre to the hammer mill, feeding the cellulose fibre from the hammer mill to the forming head, feeding e.g. synthetic fibres to the forming head, driving the forming wire, and generating the other air stream, but other actuators (not shown) for driving other functions can also be related to the system.
  • the detector is, as seen in fig. 1, placed downstream the forming head and above the fluff on the forming wire and it can be of any suitable type, for example a digital photo detector, a laser detector or an ultrasound detector.
  • the detector is arranged for counting the number of nits per unit of area of fluff on the wire or non-woven web or the number of nits per unit of area of fluff on the wire or non- woven web and also the size of each of these nits.
  • the result of the detecting is constantly sent as input to the computer, which also receives input (not shown) for the simultaneous supplying of the different fibres to the forming head.
  • the computer is loaded with a program, which based on this information is adapted to calculate the contents of fibres per m 2 of fluff on the wire or of the finished non-woven web.
  • the program of the computer is also adapted to calculate the differential quotient for each point of this curve and to continuously regulate the actuator 24 until the differential quotient is zero in a point of the curve.
  • the plant will in practice be started with a velocity in this interval, after which the velocity continuously is regulated to the optimal velocity which is precisely the point of the curve where the differential quotient in a given moment is zero.
  • the computer of the controlling system for the air-laying process has, in a preferred embodiment of the invention, a memory for saving the relevant data, which are obtained during the production of a specific web. By using this data the plant easily and quickly can be started up next time the same web is going to be produced.
  • the program is in an embodiment of the invention adapted to reject the maximum zero point for thereby only regulating the velocity of the first air stream into the minimum zero point, which also is the optimal point of the curve.
  • the computer loaded with values for the velocities of the first air stream used by the known technique and the program of the computer is adapted to reject a zero point, which is higher than such a velocity for a given product .
  • the computer is also adapted to regulate other actuators, e.g. the actuators 25, 26, 27, 28 and 29 in correspondence with the regulating of the velocity of the first air stream.
  • the fibre distributor in the above-described way self-regulating and will therefore, during operation, automatically produce non-woven webs with a minimum of fibre loss in form of nits and at the same time also with an extremely high rate of production.
  • the plant is also very easy to start up and operate.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Un distributeur de fibres est utilisé pour produire des fibres par procédé « air-laid » (4 ; 6) sur une toile de mise en forme sans fin, perméable à l'air (9), dans une usine de production de voiles non tissés. Ce distributeur de fibres comporte une tête de mise en forme (2) ayant une partie inférieure perforée (7) et des rangées (14) d'ailes rotatives (15) situées à une certaine distance au-dessus de la partie inférieure (7) pour balayer les fibres fournies (4 ; 6) pendant la production, le long des rangées (14) d'ailes (15) dans un flux d'air avant que les fibres ne quittent successivement la tête de mise en forme (2) par les ouvertures (8) de la partie inférieure perforée (7) aux fins de leur dépôt dans une couche (16) située en partie supérieure (17) de la toile de mise en forme (2). Les fibres (4 ; 6) sont, pendant qu'elles sont balayées de cette manière, inclinées afin de former des petits paquets fibreux (20 ; 21). Les ailes (15) sont par conséquent conçues pour tourner à une vitesse optimale de rotation dans un espace où l'inclinaison des fibres (4 ; 6) devant former les petits paquets fibreux (20 ; 21) change d'une valeur inférieure à une valeur supérieure lorsque la vitesse de rotation des ailes (15) augmente. Le procédé et le distributeur de fibres de la présente invention permettent de produire des voiles non tissés avec un minimum de perte de fibres sous forme de petits paquets fibreux et en même temps avec un taux de production extrêmement élevé.
PCT/DK2004/000370 2003-05-28 2004-05-27 Procede et distributeur de fibres permettant la production de fibres par procede « air-laid » WO2004106604A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
MXPA05012869A MXPA05012869A (es) 2003-05-28 2004-05-27 Un metodo y un distribuidor de fibras para tendido al aire de fibras.
EP04734995.6A EP1633912B1 (fr) 2003-05-28 2004-05-27 Procede et distributeur de fibres permettant la production de fibres par procede air-laid
CN2004800147176A CN1795296B (zh) 2003-05-28 2004-05-27 用于对纤维施以空气的方法及纤维分布器
BRPI0410699-7A BRPI0410699A (pt) 2003-05-28 2004-05-27 método e distribuidor de fibras para a deposição a ar de fibras
PL04734995T PL1633912T3 (pl) 2003-05-28 2004-05-27 Sposób oraz urządzenie do układania włókien wykorzystujące technikę igłowania powietrzem
DK04734995.6T DK1633912T3 (da) 2003-05-28 2004-05-27 En fremgangsmåde og en fiberfordeler til at tørlægge fibre
JP2006529640A JP2006529006A (ja) 2003-05-28 2004-05-27 繊維を空気により敷き詰めるための方法および繊維分配装置
CA2525289A CA2525289C (fr) 2003-05-28 2004-05-27 Procede et distributeur de fibres pour le depot de fibres par voie pneumatique
US11/265,718 US20060055072A1 (en) 2003-05-28 2005-11-01 Method and distributor for air-laying of fibers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200300805 2003-05-28
DKPA200300805 2003-05-28

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/265,718 Continuation US20060055072A1 (en) 2003-05-28 2005-11-01 Method and distributor for air-laying of fibers

Publications (1)

Publication Number Publication Date
WO2004106604A1 true WO2004106604A1 (fr) 2004-12-09

Family

ID=33483735

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2004/000370 WO2004106604A1 (fr) 2003-05-28 2004-05-27 Procede et distributeur de fibres permettant la production de fibres par procede « air-laid »

Country Status (10)

Country Link
US (1) US20060055072A1 (fr)
EP (1) EP1633912B1 (fr)
JP (1) JP2006529006A (fr)
CN (1) CN1795296B (fr)
BR (1) BRPI0410699A (fr)
CA (1) CA2525289C (fr)
DK (1) DK1633912T3 (fr)
MX (1) MXPA05012869A (fr)
PL (1) PL1633912T3 (fr)
WO (1) WO2004106604A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7087626B2 (en) * 2001-05-24 2006-08-08 Eli Lilly And Company Pyrrole derivatives as pharmaceutical agents
DE102010035944A1 (de) 2010-08-31 2012-03-01 Oerlikon Textile Gmbh & Co. Kg Verfahren und Vorrichtung zum Trockenformen einer Faserbahn
DE102010052010A1 (de) 2010-11-19 2012-05-24 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum Trockenformen einer Faserbahn

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US20100092746A1 (en) * 2008-10-14 2010-04-15 Jean-Marie Coant Nonwoven material containing benefiting particles and method of making
DE102012111815A1 (de) * 2011-12-22 2013-06-27 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum Trockenformen einer Faserbahn

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US4375448A (en) * 1979-12-21 1983-03-01 Kimberly-Clark Corporation Method of forming a web of air-laid dry fibers
US4494278A (en) * 1977-11-08 1985-01-22 Karl Kristian Kobs Kroyer Apparatus for the production of a fibrous web
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EP0616056A1 (fr) * 1993-03-09 1994-09-21 Niro Separation A/S Appareil pour déposer des fibres
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US5544090A (en) * 1992-12-31 1996-08-06 Zellweger Uster, Inc. Removal of undesirable entities in thin webs of textile materials
US5752294A (en) * 1994-02-22 1998-05-19 Mor; Uzi System and method for detection of cotton stickiness and neps and other lint qualities in real time and removal of sticky deposits from processed cotton in the gin
WO2000004232A1 (fr) * 1998-07-14 2000-01-27 M & J Fibretech A/S Separateur de noeuds
US6233787B1 (en) * 1997-12-23 2001-05-22 Marianne Etlar Eriksen Fiber distributor
EP1215312A1 (fr) * 2000-12-18 2002-06-19 Maschinenfabrik Rieter Ag Techniques de mesure en ligne
US20020152583A1 (en) * 2000-06-23 2002-10-24 Maschinefabrik Rieter Ag Method and apparatus for fiber length measurement
US20030070262A1 (en) * 2000-05-31 2003-04-17 Andersen Jens Ole Brochner Dry production of a non-woven fibre web
US6675441B2 (en) * 2001-02-16 2004-01-13 TRüTZSCHLER GMBH & CO. KG Device and method for detecting lightweight waste in a carding machine

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JPS56101962A (en) * 1979-12-21 1981-08-14 Kimberly Clark Co Method and apparatus for producing dry web with high properties and uniformity by air laying system
US4335066A (en) * 1979-12-21 1982-06-15 Kimberly-Clark Corporation Method of forming a fibrous web with high fiber throughput screening
DK169356B1 (da) * 1993-03-19 1994-10-10 Kroyer K K K Apparat til fremstilling af et baneformet fiberprodukt ved tørmetoden
WO1999054537A1 (fr) * 1998-04-21 1999-10-28 M&J Fibretech A/S Filet de tamisage pour distributeur de fibres

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US4494278A (en) * 1977-11-08 1985-01-22 Karl Kristian Kobs Kroyer Apparatus for the production of a fibrous web
US4375448A (en) * 1979-12-21 1983-03-01 Kimberly-Clark Corporation Method of forming a web of air-laid dry fibers
WO1991005100A1 (fr) * 1989-09-28 1991-04-18 Kroyer K K K Installation de fabrication d'un produit fibreux se presentant sous la forme d'une bande
US5544090A (en) * 1992-12-31 1996-08-06 Zellweger Uster, Inc. Removal of undesirable entities in thin webs of textile materials
EP0616056A1 (fr) * 1993-03-09 1994-09-21 Niro Separation A/S Appareil pour déposer des fibres
US5752294A (en) * 1994-02-22 1998-05-19 Mor; Uzi System and method for detection of cotton stickiness and neps and other lint qualities in real time and removal of sticky deposits from processed cotton in the gin
WO1996010663A1 (fr) * 1994-09-30 1996-04-11 M & J Fibretech A/S Installation et procede de production par voie seche d'un produit en forme de bande
US6233787B1 (en) * 1997-12-23 2001-05-22 Marianne Etlar Eriksen Fiber distributor
WO2000004232A1 (fr) * 1998-07-14 2000-01-27 M & J Fibretech A/S Separateur de noeuds
US20030070262A1 (en) * 2000-05-31 2003-04-17 Andersen Jens Ole Brochner Dry production of a non-woven fibre web
US20020152583A1 (en) * 2000-06-23 2002-10-24 Maschinefabrik Rieter Ag Method and apparatus for fiber length measurement
EP1215312A1 (fr) * 2000-12-18 2002-06-19 Maschinenfabrik Rieter Ag Techniques de mesure en ligne
US6675441B2 (en) * 2001-02-16 2004-01-13 TRüTZSCHLER GMBH & CO. KG Device and method for detecting lightweight waste in a carding machine

Cited By (7)

* Cited by examiner, † Cited by third party
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US7087626B2 (en) * 2001-05-24 2006-08-08 Eli Lilly And Company Pyrrole derivatives as pharmaceutical agents
DE102010035944A1 (de) 2010-08-31 2012-03-01 Oerlikon Textile Gmbh & Co. Kg Verfahren und Vorrichtung zum Trockenformen einer Faserbahn
WO2012028535A1 (fr) 2010-08-31 2012-03-08 Oerlikon Textile Gmbh & Co. Kg Procédé et dispositif de formation à sec d'une bande fibreuse
US8793840B2 (en) 2010-08-31 2014-08-05 Oerlikon Textile Gmbh & Co. Kg Method and device for the dry forming of a fiber web
DE102010052010A1 (de) 2010-11-19 2012-05-24 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum Trockenformen einer Faserbahn
WO2012066083A1 (fr) 2010-11-19 2012-05-24 Oerlikon Textile Gmbh & Co. Kg Dispositif de formation à sec d'une bande fibreuse
US8827673B2 (en) 2010-11-19 2014-09-09 Oerlikon Textile Gmbh & Co. Kg Device for dry-forming a fibrous web

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EP1633912A1 (fr) 2006-03-15
BRPI0410699A (pt) 2006-06-20
CN1795296A (zh) 2006-06-28
PL1633912T3 (pl) 2014-11-28
MXPA05012869A (es) 2006-02-22
US20060055072A1 (en) 2006-03-16
CN1795296B (zh) 2010-09-08
CA2525289C (fr) 2011-11-15
EP1633912B1 (fr) 2014-07-16
CA2525289A1 (fr) 2004-12-09
DK1633912T3 (da) 2014-10-06
JP2006529006A (ja) 2006-12-28

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