EP1422325A2 - Offenend-Spinnvorrichtung und Spinnrotor sowie Verfahren zur Garnherstellung - Google Patents
Offenend-Spinnvorrichtung und Spinnrotor sowie Verfahren zur Garnherstellung Download PDFInfo
- Publication number
- EP1422325A2 EP1422325A2 EP03026400A EP03026400A EP1422325A2 EP 1422325 A2 EP1422325 A2 EP 1422325A2 EP 03026400 A EP03026400 A EP 03026400A EP 03026400 A EP03026400 A EP 03026400A EP 1422325 A2 EP1422325 A2 EP 1422325A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- spinning
- insert
- yarn
- rotation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
- D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
Definitions
- the invention relates to an open-end spinning device a spinning rotor rotating in a rotor housing after the Preamble of claim 1, a spinning rotor according to the Preamble of claim 12 and a method for Yarn production according to the preamble of claim 13.
- DE 44 11 342 A1 also describes an open-end rotor spinning device with one rotatable in the spinning rotor stored spinning insert.
- the spinning insert is over one Coupling device can be temporarily fixed on the spinning rotor. at In normal spinning operations, the spinning insert is used exclusively dragged by the thread. This is possible because of the thread by advancing the embedding zone the spinning insert in Can pull direction of rotation.
- the Coupling device it is possible in the Acceleration phase of the spinning device on the spinning insert Accelerate rotor speed by moving this over the Coupling device is taken from the spinning rotor. Thereby can overload the thread during piecing that possibly to a thread break or a failure of the Leaders leads to be avoided.
- DE 44 11 342 A1 leads from that so-called by constantly newly fed fibers Lower thirds are created. These lower thirds are said to be reliable can be avoided by using a thread Guide channel in the spinning insert relatively well out of the Fiber guide channel emerging fibers is protected. It goes DE 44 11 342 A1, however, from inaccurate bases. It was not recognized that the formation of the lower thirds not in the area between the rotor groove and the discharge nozzle, but during the threading process in the threading zone, as detailed, for example, in DE 199 63 087 A1 is explained. Therefore, the undesirable emergence of lower thirds with the device of DE 44 11 342 A1 or insufficiently prevent it.
- DE 195 28 727 A1 shows an open-end rotor spinning machine with an outer rotor, in which a so-called inner rotor Rotor insert is arranged, which is independent of the outer rotor is driven. Both the outer rotor and the Inner rotor are each made up of separate tangential belts Rotation offset. The rotational speed of the inner rotor is always something in spinning and spinning greater than the peripheral speed of the outer rotor. about An extraction channel is the fibers from the collecting groove designated rotor groove is pulled off and thereby to a thread educated. The inner rotor is also in DE 195 28 727 A1 Called stretching rotor, because it causes a certain stretching of the Yarn should be achievable.
- Thread guide channel in the inner rotor and is thereby from in Direction of rotation of the rotors curved surfaces in the yarn channel guided.
- the yarn channel is designed to prevent will that from the rotor groove fibers of the in the direction of rotation can enter the rear side.
- Thread formation take place so that no undesirable than Wrapping fibers called abdominal bandages, which in the DE 195 28 727 A1 called cord winding fibers occur. This should contribute in particular that no fibers from the in Direction of rotation rear side of the yarn channel in the out of the Can remove fiber bundle removed from the rotor groove.
- the device can detect the occurrence of wrapping fibers according to DE 195 28 727 A1 for the same reasons as in the Do not prevent DE 44 11 342 A1.
- leading embedding zone with which the in DE 195 28 727 A1 Open-end rotor spinning machine described is one Direction of curvature of the thread end in the direction of rotor rotation. This will remove fibers from the fiber slide surface of the rotor coming directly to the binding zone of the yarn end, initially in the opposite direction to the normal direction of yarn rotation Directed tied to the spinning yarn, after which further Withdrawing the yarn while rotating it about its own axis the direction of rotation of these fibers in the The main direction of rotation of the yarn changes.
- the generic DE 199 63 087 A1 describes a Method for open-end rotor spinning, in which the curvature of the Thread end is aligned against the direction of rotation of the rotor.
- the binding zone therefore rushes with the thread take-off speed lower Orbital velocity after.
- the fibers are under a larger Draft is removed from the rotor groove. hereby there is an additional stretching, which leads to a improved orientation of the fibers and a higher Utilization of the fiber substance strength enables. That on yarn produced in this way, in contrast to one Yarn made with the leading embedding zone a distinctive yarn core made of stretched fibers.
- the Invention Based on the aforementioned prior art, the Invention based on the object, the known open-end rotor spinning devices to improve.
- An open-end spinning device designed according to the invention leads to a significant improvement in Stability of the spinning process with lagging binding zone especially in the piecing phase.
- a disadvantageous change from a spinning process with a trailing embedding zone in one Spinning process with leading embedding zone during the This can avoid the ongoing spinning process.
- the delay of the rotor insert compared to its synchronous to the spinning rotor Drive in normal spinning operation by the Thread guide interacting twine legs adjusts particularly simple setting of the appropriate speed of the Rotor insert.
- the coupling means Magnet is hysteresis in the ferromagnetic material of the Rotor effective, i.e. the clutch essentially comes up the eddy current principle to effect.
- One is also magnetic initiated higher bearing friction achievable, the additional or only for the corresponding entrainment of the rotor insert provides.
- the speed of the rotor insert can be at Align piecing to the speed of the spinning rotor.
- the Permanent magnets can be permanently attached to the rotor insert his. Additional drive or control devices for Applying the rotary motion to the rotor insert not mandatory.
- the space requirement of the permanent magnets is low. These are easy to integrate into the rotor insert and do not require any additional installation space. This is special an advantage because the available space within the spinning rotors very much is limited
- a thread guide designed according to claim 5 improves the Stability of the spinning process.
- An embodiment of the rotor insert according to claim 6 leads simple way to extend the thread guide channel, with additional stabilization of the Yarn formation process takes place during operation, since the Thread up to the rotor groove largely in the direction of rotation covered and protected from air currents.
- edge of the recess of the rotor insert is in accordance Claim 7 designed as a slope, this acts due to the Rotation of the rotor insert any undesirable Deposits in the recess, for example of short fibers, opposite. Such deposited short fibers could prove to be Loosen accumulation and then to yarn errors or malfunctions in the Lead spinning process.
- Is the rear side wall of the Thread guide channel formed according to claim 8, is a Supports piecing as quickly as possible.
- An open-end spinning device in which the thread guide of the Rotor insert is designed according to claims 9 to 11, is particularly easy and inexpensive to manufacture.
- the yarn leg recorded faster and more securely in such a way that a lagging embedding zone forms.
- Axial symmetrical arrangement of the drivers can be balanced of the rotor insert completely or largely eliminated.
- the Position of the permanent magnets in the driver and thus as far away from the axis of rotation leads to that the forces attack a large lever arm, causing the contactless transmission of the rotary movement from the spinning rotor on the rotor insert, especially when piecing is improved.
- the invention also includes separate drives from Spinning rotor and rotor insert, which are synchronized so that there is a suitable relation of the rotary movements of Spinning rotor and rotor insert results.
- the open-end spinning device represents one very good stability of the spinning process already from the Piecing phase on for sure, like when using rotor spinning lagging embedding zone has not yet been reached. The effort required for this can be kept to a minimum. A spinning process can be easily carried out with a lagging Set the embedding zone, which is extraordinary right from the start is stable.
- the open-end spinning device 1 of Figure 1 comprises one Spinning rotor 2.
- the spinning rotor 2 has a rotor plate 3 and a rotor shaft 4.
- the rotor shaft 4 is in one Support disc bearing 5 added and in the axial direction fixed by a thrust bearing 6.
- the spinning rotor 2 will driven by an endless flat belt 7.
- the Rotor housing 9 forms a vacuum chamber 8 in which the Rotor plate 3 rotates.
- the vacuum chamber 8 is a Line 10 connected to a vacuum source 11 and during of spinning through a channel plate 12 with the help of a Ring seal 13 sealed airtight.
- the channel plate 12 has a channel plate extension 14 in which a Thread take-off nozzle 15 and a thread take-off tube 16 are held are.
- a rotor insert 18 is rotatable within the rotor plate 3 mounted on the rotor shaft 4.
- the rotor insert 18 has on it Front a recess 19 in which the Thread take-off nozzle 15 protrudes. From the recess 19 starting, runs in a radial direction Thread guide channel 20 to the outer edge of the rotor insert 18.
- In the rotor insert 18 are cylindrical Permanent magnets 21 inserted and fixed. The storage of the Rotor insert 18 is carried out by means of a roller bearing 22, which with its inner ring by a screw 23 on the rotor shaft 4 is attached.
- FIG. 2 shows the rotor plate 3 enlarged compared to FIG. 1 of the spinning rotor 2, the rotor insert 18 and the Thread take-off nozzle 15.
- the through the fiber guide 17 in the Rotor plate 3 fibers fed into one Fiber ring 24 in the rotor groove 25 are shown in FIG. 3 Inclusion zone 26 shown tied to the yarn leg 27 and drawn off as yarn 28 through the thread draw-off nozzle 15.
- the Spinning rotor 2 of Figure 3 is without that shown in Figure 2 Channel plate extension 14 and without the thread take-off nozzle 15 shown.
- the rotor insert 18 has one Thread guide channel 20, which in the area of the rotor groove 25 runs curved against the direction of rotation of the spinning rotor 2.
- the direction of rotation of the spinning rotor 2 is indicated by the arrow 29 represents.
- the Rotor insert 18 is designed so that it is already before the a balancing process made during its manufacture has the least possible residual unbalance.
- the recess 19 has a slope 30 at the edge. This will, for example Short fibers that have detached from the yarn 28 on it prevented from being deposited in the recess 19. The Rather, short fibers are again due to the rotation of the Rotor insert 18 transported back into the rotor plate 3.
- the direction of rotation of the Rotor insert 18 rear side wall 32 of the Thread guide channel 20 is formed higher than that in FIG Side wall 33 lying in the direction of rotation and partially faces a slope 34, as shown in Figure 4.
- the Rotor insert 18 rotates in the direction of arrow 31 can be the one running around initially as a free thread leg Grasp the thread end of the piecing thread quickly and safely and in Guide fiber guide channel 20.
- the in Direction of rotation rear wall 32 entirely formed as a slope his.
- FIGS. 5 and 6 has the rotatable in the rotor plate 36 of the spinning rotor 37 mounted rotor insert 38 on three drivers 39.
- the in the Rotor plate 36 fed fibers lay in the 5 recognizable fiber ring 46 in the rotor groove 41 from and are in the integration zone 47 shown in Figure 6 to the Twine legs 40 tied.
- One of the drivers 39 leads the Yarn leg 40.
- the fibers of the yarn leg 40 are made the rotor groove 41 in the direction of the thread take-off nozzle 42 steered and as yarn 43 through the thread take-off nozzle 42nd deducted.
- the spinning rotor 37 of FIG. 6 is without the in Figure 5 shown channel plate extension 44 and without the Thread take-off nozzle 42 shown.
- In each driver 39 is one Permanent magnet 45 fixed.
- the direction of rotation of the Spinning rotor 37 and the rotor insert 38 is through the Arrow 48 represents.
- the invention is not based on those described Embodiments limited. It is special with regard to the design of the rotor insert Embodiments possible within the scope of the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
- Fig. 1
- eine schematische Darstellung einer Offenend-Rotorspinneinrichtung mit einem innerhalb des Spinnrotors angeordneten Rotoreinsatz in Seitenansicht, teilweise im Schnitt,
- Fig. 2
- eine Teilansicht der Offenend-Rotorspinneinrichtung der Figur 1 in vergrößerter Darstellung,
- Fig. 3
- den in Figur 2 dargestellten Spinnrotor mit eingelagertem Rotoreinsatz in Vorderansicht, teilweise im Schnitt,
- Fig. 4
- eine Teilansicht des Rotoreinsatzes der Figur 3 in der Ansicht I-I, im Schnitt.
- Fig. 5
- eine schematische Darstellung eines Spinnrotors in Seitenansicht, dessen Rotoreinsatz Mitnehmer aufweist, teilweise im Schnitt,
- Fig. 6
- den in Figur 5 dargestellten Spinnrotor mit eingelagertem Rotoreinsatz in Vorderansicht, teilweise im Schnitt,
Claims (14)
- Offenend-Spinnvorrichtung mit einem in einem Rotorgehäuse umlaufenden Spinnrotor, in dessen den größten Innendurchmesser aufweisender Rotorrille die Fasern gesammelt werden, und mit einer nacheilenden Einbindezone, wobei ein sich von einer Fadenabzugsdüse zur Rotorrille erstreckender Garnschenkel zumindest in der Nähe der Rotorrille während des Spinnvorganges entgegen der Rotordrehrichtung gekrümmt ist,
dadurch gekennzeichnet, daß im Spinnrotor (2, 37) ein koaxial zur Rotorachse (35) des Spinnrotors (2, 37) drehbar gelagerter Rotoreinsatz (18, 38) angeordnet ist, daß eine Einrichtung vorhanden ist, die den Rotoreinsatz (18, 38) in Drehrichtung des Spinnrotors (2, 37) in Rotation versetzt, wobei der Rotoreinsatz (18, 38) während des Spinnprozesses so verzögert ist, daß die Verzögerung im wesentlichen dem Nacheilen der Einbindezone entspricht, und daß der Rotoreinsatz (18, 38) eine Fadenführung aufweist, die den Garnschenkel (27, 40) zwischen Rotorrille (25, 41) und Fadenabzugsdüse (15, 42) führt und die Krümmung des Garnschenkels (27, 40) entgegen der Rotordrehrichtung in allen Spinnphasen unterstützt. - Offenend-Spinnvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß beim normalen Spinnbetrieb der Garnschenkel (27, 40) über die Fadenführung den Rotoreinsatz (18, 38) gegenüber seinem zum Spinnrotor (2, 37) synchronen Antrieb verzögert.
- Offenend-Spinnvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Einrichtung zum Antrieb des Rotoreinsatzes (18, 38) aus einer kontaktlosen Kopplung mit dem Spinnrotor (2, 37) besteht.
- Offenend-Spinnvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Rotoreinsatz (18, 38) zur kontaktlosen Kopplung konzentrisch angeordnete Permanentmagnete (21, 45) aufweist.
- Offenend-Spinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Fadenführung ein Fadenführungskanal (20) ist und daß die rotorrillenseitige Eintrittsöffnung des Fadenführungskanals (20) so ausgebildet ist, daß sie die Krümmung des Garnschenkels (27) entgegen der Rotordrehrichtung unterstützt.
- Offenend-Spinnvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß von den beiden an den Fadenführungskanal (20) angrenzenden Umfangsbereichen des Rotoreinsatzes (18) ausschließlich der in Drehrichtung des Fadenführungskanals (20) rückwärtige Umfangsbereich so weit von der Rotorrille (25) beabstandet ist, daß der Rotoreinsatz (18) und der Spinnrotor (2, 37) in diesem Bereich gemeinsam eine Verlängerung des Fadenführungskanals (20) bilden.
- Offenend-Spinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Rotoreinsatz (18) mittig eine Ausnehmung (19) aufweist, in die die Fadenabzugsdüse (15) bei geschlossener Offenend-Spinnvorrichtung (1) teilweise hineinragt, wobei der Rand der Ausnehmung (19) als Schräge (30) ausgebildet ist.
- Offenend-Spinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die in Drehrichtung rückwärtige Seitenwand (32) des Fadenführungskanals (20) so ausgebildet ist, daß sie das Einfangen eines als Garnschenkel (27) umlaufenden freien Endes des Anspinnfadens bewirkt.
- Offenend-Spinnvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Fadenführung als Mitnehmer (39) ausgebildet ist.
- Offenend-Spinnvorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß mindestens ein weiterer Mitnehmer (39) vorhanden ist und alternativ einer der Mitnehmer (39) den Garnschenkel (40) führt.
- Offenend-Spinnvorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß der Mitnehmer (39) so ausgebildet ist, daß er gleichzeitig der Aufnahme der Permanentmagnete (45) dient.
- Spinnrotor mit einer Rotorrille, die den größten Innendurchmesser des Spinnrotors bildet, dadurch gekennzeichnet, daß im Spinnrotor (2, 37) ein koaxial zur Rotorachse (35) des Spinnrotors (2, 37) drehbar gelagerter Rotoreinsatz (18, 38) angeordnet ist, daß der Rotoreinsatz (18, 38) eine Fadenführung aufweist, durch die der Garnschenkel (27, 40) zwischen Rotorrille (25, 41) und Fadenabzugsdüse (15, 42) geführt wird und durch den die Krümmung des Garnschenkels (27, 40) entgegen der Rotordrehrichtung in allen Spinnphasen so unterstützt wird, dass der Spinnvorgang mit nacheilender Einbindezone abläuft, und daß der Spinnrotor (2, 37) eine Einrichtung besitzt, mit der der Rotoreinsatz (18, 38) in Drehrichtung des Spinnrotors (2, 37) in Rotation versetzbar und während des Spinnprozesses so verzögerbar ist, daß die Verzögerung im wesentlichen dem Nacheilen der Einbindezone entspricht.
- Verfahren zur Garnherstellung, bei dem ein Spinnrotor in einem Rotorgehäuse einer Offenend-Spinnvorrichtung umläuft und die Fasern in einer den größten Innendurchmesser des Spinnrotors bildenden Rotorrille gesammelt werden, wobei sich ein Garnschenkel von einer Fadenabzugsdüse zur Rotorrille erstreckt und sich zumindest in der Nähe der Rotorrille während des Spinnvorganges entgegen der Rotordrehrichtung krümmt, dadurch gekennzeichnet, daß sich ein im Spinnrotor (2, 37) koaxial zur Rotorachse (35) gelagerter Rotoreinsatz (18, 38) in Drehrichtung des Spinnrotors (2, 37) dreht, daß die Drehbewegung des Rotoreinsatzes (18, 38) während des Spinnprozesses so verzögert wird, daß die Verzögerung im wesentlichen dem Nacheilen der Einbindezone, das sich durch die Krümmungsrichtung des Garnschenkels ergibt, entspricht, und daß der Rotoreinsatz (18, 38) den Garnschenkel (27, 40) zwischen Rotorrille (25, 41) und Fadenabzugsdüse (15, 42) so führt, dass er die Krümmung des Garnschenkels (27, 40) entgegen der Rotordrehrichtung in allen Spinnphasen unterstützt.
- Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß der Rotoreinsatz (18, 38) in der Anspinnphase mit einer Geschwindigkeit umläuft, die mindestens so hoch ist, dass er den in den Spinnrotor (2, 37) eingeführten Garnschenkel einfängt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10254272 | 2002-11-21 | ||
DE10254272A DE10254272A1 (de) | 2002-11-21 | 2002-11-21 | Offenend-Spinnvorrichtung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1422325A2 true EP1422325A2 (de) | 2004-05-26 |
EP1422325A3 EP1422325A3 (de) | 2005-03-23 |
EP1422325B1 EP1422325B1 (de) | 2008-04-23 |
Family
ID=32185883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03026400A Expired - Lifetime EP1422325B1 (de) | 2002-11-21 | 2003-11-19 | Offenend-Spinnvorrichtung und Spinnrotor sowie Verfahren zur Garnherstellung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6920746B2 (de) |
EP (1) | EP1422325B1 (de) |
CN (1) | CN1515714A (de) |
DE (2) | DE10254272A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10254271A1 (de) * | 2002-11-21 | 2004-06-03 | Saurer Gmbh & Co. Kg | Offenend-Spinnvorrichtung |
DE202005016198U1 (de) * | 2005-10-15 | 2005-12-29 | Saurer Gmbh & Co. Kg | Zwirnflügel |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2552955A1 (de) * | 1974-11-29 | 1976-08-12 | Negishi Kogyo Kenkyusho Urawa | Offenes spinnverfahren und vorrichtung zur ausfuehrung des verfahrens |
DE4411342A1 (de) * | 1994-03-31 | 1995-10-05 | Schlafhorst & Co W | Offenend-Rotorspinnvorrichtung |
DE19963087A1 (de) * | 1999-12-24 | 2001-06-28 | Schlafhorst & Co W | Verfahren zum Offenend-Rotorspinnen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1917864A1 (de) * | 1968-04-10 | 1969-12-11 | Vnii Tekstilnogo I Legkogo Mas | Zwirn- und Garnbildungsvorrichtung zum pneumomechanischen Spinnen und Verfahren zur Drehung des Abweisers darin |
DE2126841A1 (de) | 1971-05-29 | 1973-01-25 | Schubert & Salzer Maschinen | Faserbandspinnvorrichtung mit rotierender spinnkammer |
DE2421415B2 (de) * | 1974-05-03 | 1977-07-28 | Fried. Krupp GmbH, 4300 Essen - | Offen-end-spinneinheit mit faserleitscheibe |
DE3942454A1 (de) * | 1989-12-22 | 1991-06-27 | Schlafhorst & Co W | Verfahren und einrichtung zum herstellen eines spinnfasergarns |
TW327900U (en) * | 1994-08-05 | 1998-03-01 | Toyoda Automatic Loom Works | Rotor types and air stream spinning type precision spinning frame |
-
2002
- 2002-11-21 DE DE10254272A patent/DE10254272A1/de not_active Withdrawn
-
2003
- 2003-11-19 EP EP03026400A patent/EP1422325B1/de not_active Expired - Lifetime
- 2003-11-19 DE DE50309677T patent/DE50309677D1/de not_active Expired - Fee Related
- 2003-11-21 US US10/718,949 patent/US6920746B2/en not_active Expired - Fee Related
- 2003-11-21 CN CNA2003101164566A patent/CN1515714A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2552955A1 (de) * | 1974-11-29 | 1976-08-12 | Negishi Kogyo Kenkyusho Urawa | Offenes spinnverfahren und vorrichtung zur ausfuehrung des verfahrens |
DE4411342A1 (de) * | 1994-03-31 | 1995-10-05 | Schlafhorst & Co W | Offenend-Rotorspinnvorrichtung |
DE19963087A1 (de) * | 1999-12-24 | 2001-06-28 | Schlafhorst & Co W | Verfahren zum Offenend-Rotorspinnen |
Also Published As
Publication number | Publication date |
---|---|
DE10254272A1 (de) | 2004-06-03 |
EP1422325A3 (de) | 2005-03-23 |
US20040103634A1 (en) | 2004-06-03 |
EP1422325B1 (de) | 2008-04-23 |
US6920746B2 (en) | 2005-07-26 |
DE50309677D1 (de) | 2008-06-05 |
CN1515714A (zh) | 2004-07-28 |
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