EP0062643B1 - Method for producing spun yarns - Google Patents

Method for producing spun yarns Download PDF

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Publication number
EP0062643B1
EP0062643B1 EP81901813A EP81901813A EP0062643B1 EP 0062643 B1 EP0062643 B1 EP 0062643B1 EP 81901813 A EP81901813 A EP 81901813A EP 81901813 A EP81901813 A EP 81901813A EP 0062643 B1 EP0062643 B1 EP 0062643B1
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EP
European Patent Office
Prior art keywords
elongation
roving
zone
filament
rovings
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Expired
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EP81901813A
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German (de)
French (fr)
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EP0062643A1 (en
Inventor
Fritjof Dr.-Ing. Maag
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Individual
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Individual
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Priority claimed from DE19803026901 external-priority patent/DE3026901A1/en
Priority claimed from DE19803049573 external-priority patent/DE3049573A1/en
Priority claimed from DE19813105832 external-priority patent/DE3105832A1/en
Priority claimed from DE19813120035 external-priority patent/DE3120035A1/en
Application filed by Individual filed Critical Individual
Publication of EP0062643A1 publication Critical patent/EP0062643A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
    • D02G3/385—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn using hollow spindles, e.g. making coverspun yarns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/06—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making cross-wound packages
    • B65H54/08—Precision winding arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • B65H54/381—Preventing ribbon winding in a precision winding apparatus, i.e. with a constant ratio between the rotational speed of the bobbin spindle and the rotational speed of the traversing device driving shaft
    • B65H54/383—Preventing ribbon winding in a precision winding apparatus, i.e. with a constant ratio between the rotational speed of the bobbin spindle and the rotational speed of the traversing device driving shaft in a stepped precision winding apparatus, i.e. with a constant wind ratio in each step
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a process for the production of yarns from spun fiber tapes and their refinement to roving, which is consolidated by winding with a fine filament yarn, warping the roving in the drafting unit of a spinning machine to the desired yarn thickness and consolidating the resulting sliver, e.g. by granting rotation.
  • a draftable roving produced by winding with a filament yarn is described in DE-P-2 447 715.
  • the elongation at break of the wrapping filament yarns should be exceptionally low and that a certain geometric arrangement of the filament yarns in the roving is also necessary.
  • the object of the present invention is to avoid the disadvantages mentioned in the production of spun yarns from wrapped rovings.
  • the amount of warpage in the main drafting zone is about 15 to 40 times. If you prevent the tearing of the filament yarns in the pre-drafting zone by means of correspondingly lower warping in the pre-drafting zone and greater stretching, they will tear safely in the main drafting zone, provided that the filament yarns are securely clamped between the cylinders of the drafting system. Due to the tension of the filament yarn in the pre-drafting zone, the roving is evenly combined when entering the main drafting zone. This gives good conditions for an even delay.
  • Filament yarns with force-elongation properties can be used for the process, as are also common for other areas of application. However, quickly spun or partially drawn filament yarns can also be used.
  • the filament properties are essential for avoiding false warping, roving breaks and cracks.
  • the wrapping filament yarn must be able to build up enough frictional forces between its fibers when the roving is subjected to tensile stress, in order to form sufficient roving yarn strength together with the strength of the filament yarn.
  • the filament yarn has to develop a sufficiently high tensile force even at a low stretch. It is therefore preferred if the force-length change behavior and the titer of the filament yarn are coordinated in such a way that a minimum tensile force of 10 cN is developed in the filament yarn when stretched by 4%.
  • the roving bobbins 7 are plugged into a drain creel 9, with the roving 5 in the thread leader 93 will be drafted.
  • the discharge gate 9 is brought to the spinning machine and is brought into the working position between the drafting systems (11, 12).
  • the rovings are now guided through the draft zone 11 and the main draft zone 12 of the drafting system.
  • this drafting system can be designed as a clamping drafting system or as a pulling drafting system.
  • the filament yarn surrounding the roving is torn when the roving is drawn and this is drawn to the desired fineness.
  • the twine receives its twist by means of the twisting device 13 and is thereby wound onto cops.
  • a fiber band made of cotton fibers with a strength of 700 dtex is wound with a filament yarn with a strength of 9 dtex and an elongation at break of 20% to the roving.
  • This roving is drawn to a fineness of 200 dtex in a drafting system and solidified by twisting to form the yarn.
  • the advance was 1.5 times.
  • the wrapping filament yarn tore for the most part in the pre-draft zone, but short periods of time were also observed in which the pre-yarn was only tensioned in the pre-draft zone. This led to distortion with thick and thin spots in the yarn.
  • the roving from Example 1 is drawn to a fineness of 200 dtex in a drafting system and solidified by twisting to form the yarn.
  • the advance was 1.16 times.
  • the roving was only tense in the pre-draft zone.
  • the width of the roving when entering the main draft zone was significantly smaller than in Example 1 and very constant.
  • the filament yarn only broke in the main draft zone. No distortion of delay was observed.

Abstract

A web of textile fibers (2) is drawn in a draw frame (3), is transformed in a covering device (4) into a roving (5) by covering it with a fine continuous yarn; the roving thus obtained is then drawn in a draw frame (11, 12) of a spinning machine until the desired yam count is obtained. In order to avoid defects during the drawing of the roving and in order to avoid an exclusive utilisation of special continuous yams with reduced elongation for the covering, the continuous yams are tom not in the preparatory drawing area (11) of the drawframe, but in the main drawing area (12). To allow these operations to take place in perfect conditions, the continuous yam which is used for the covering must have a tensile strength of at least 10 cN for an elongation of 4% and a tensile strength of 100 cN; further, the ratio between the elastic elongation and the total elongation must not be smaller than 80% when applying a force of 15 cN. The covering device (4) is surrounded by a tilting protection allowing to remove as a whole the hollow spindle, the support and the bobbin with the continuous yarn. The rovings (5) are wound on a bobbin (7) by means of a driven cylinder (6) and transferred to a moving creel (9) which may be carried in the spinning machine where it will be fixed in a working position.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Garnen aus Spinnfaserbändern und deren Verfeinerung zum Vorgarn, wobei dieses durch Umwinden mit einem feinen Filamentgarn verfestigt wird, Verziehen des Vorgarnes im Streckwerk einer Spinnmaschine auf die gewünschte Garnstärke und Verfestigung des dabei entstehenden Faserbandes z.B. durch Erteilung von Drehung.The invention relates to a process for the production of yarns from spun fiber tapes and their refinement to roving, which is consolidated by winding with a fine filament yarn, warping the roving in the drafting unit of a spinning machine to the desired yarn thickness and consolidating the resulting sliver, e.g. by granting rotation.

Ein durch Umwinden mit einem Filamentgarn hergestelltes, verzugsfähiges Vorgarn ist im DE-P-2 447 715 beschrieben. Als Voraussetzung für gute Verzugseigenschaften wird;darin erwähnt, dass die Reissdehnung der umwindenden Filamentgarne aussergewöhnlich gering sein soll und auch eine bestimmte geometrische Anordnung der Filamentgarne im Vorgarn notwendig ist.A draftable roving produced by winding with a filament yarn is described in DE-P-2 447 715. As a prerequisite for good warping properties, it is mentioned that the elongation at break of the wrapping filament yarns should be exceptionally low and that a certain geometric arrangement of the filament yarns in the roving is also necessary.

Es liegt nahe, den Filamentanteil in der Vorverzugszone zu reissen, da dann der Hauptverzugszone ein völlig ungehindert verziehbares Faserband zugeführt wird. Durch die in der Patentschrift angeführten Beispiele wird die Begehbarkeit dieses Weges bestätigt.It makes sense to tear the filament portion in the pre-drafting zone, since then a completely unimpeded stretchable sliver is fed to the main drafting zone. The accessibility of this path is confirmed by the examples given in the patent specification.

Liegt dabei die Reissdehnung des umwindenden Filamentgarnes höher als in den Beispielen des DE-P-2 447 715 angegeben, so kann eine Änderung der geometrischen Anordnung des umwindenden Filamentgarnes im Vorgarn, wie sie z.B. durch eine Änderung der Ballonspannung beim Umwinden hervorgerufen wird, ein gleichmässiges Reissen derselben verhindern. Dies führt dann zu Verzugsstörungen im Hauptverzugsfeld.If the elongation at break of the wrapping filament yarn is higher than specified in the examples of DE-P-2 447 715, a change in the geometric arrangement of the wrapping filament yarn in the roving, as e.g. caused by a change in the balloon tension when wrapping around, prevent it from evenly tearing. This then leads to delays in the main delay field.

Ein höherer Verzug könnte in diesem Falle wieder zu einem gleichmässigen Reissen der Filamentgarne führen. Es wurde jedoch festgestellt, dass dadurch die Garngleichmässigkeit verschlechtert wird. Die Herstellung von Filamentgarnen mit der für derartige Vorgarne notwendigen niederen Reissdehnung ist in der DE-OS-2 614 523 beschrieben. Dieser Weg ist technisch nicht einfach und vor allem auch mit Mehrkosten belastet, die eine wirtschaftliche Anwendung von mit Filamentgarnen umwundenen Vorgarnen erschweren.In this case, a higher warp could lead to an even tearing of the filament yarns. However, it was found that this worsens the yarn uniformity. The production of filament yarns with the low elongation at break necessary for such rovings is described in DE-OS-2 614 523. This route is not technically easy and, above all, is burdened with additional costs, which make economical use of rovings wrapped with filament yarn difficult.

Aufgabe der vorliegenden Erfindung ist es, die genannten Nachteile bei der Herstellung von Spinnfasergarnen aus umwundenen Vorgarnen zu vermeiden.The object of the present invention is to avoid the disadvantages mentioned in the production of spun yarns from wrapped rovings.

Diese Aufgabe wird erfindungsgemäss durch ein Verfahren gelöst, wie dies im kennzeichnenden Teil von Patentanspruch 1 beschrieben ist.This object is achieved according to the invention by a method as described in the characterizing part of patent claim 1.

Je nach Spinnverfahren ist die Höhe des Verzuges in der Hauptverzugszone etwa 15- bis 40- fach. Verhindert man nun durch entsprechend niedere Verzüge in der Vorverzugszone und höhere Dehnung der umwindenden Filamentgarne das Reissen derselben in der Vorverzugszone, so reissen diese gesichert in der Hauptverzugszone, vorausgesetzt, dass die Filamentgarne zwischen den Zylindern des Streckwerkes sicher geklemmt werden. Durch die Anspannung des Filamentgarnes in der Vorverzugszone wird das Vorgarn beim Einlauf in die Hauptverzugszone gleichmässig zusammengefasst. Dies gibt gute Voraussetzungen für einen gleichmässigen Verzug.Depending on the spinning process, the amount of warpage in the main drafting zone is about 15 to 40 times. If you prevent the tearing of the filament yarns in the pre-drafting zone by means of correspondingly lower warping in the pre-drafting zone and greater stretching, they will tear safely in the main drafting zone, provided that the filament yarns are securely clamped between the cylinders of the drafting system. Due to the tension of the filament yarn in the pre-drafting zone, the roving is evenly combined when entering the main drafting zone. This gives good conditions for an even delay.

Für das Verfahren können Filamentgarne mit Kraft-Längenänderungs-Eigenschaften verwendet werden, wie sie auch für andere Einsatzgebiete üblich sind. Es können aber auch schnellgesponnene bzw. teilverstreckte Filamentgarne zur Anwendung kommen.Filament yarns with force-elongation properties can be used for the process, as are also common for other areas of application. However, quickly spun or partially drawn filament yarns can also be used.

Die Filamenteigenschaften sind von wesentlicher Bedetung für das Vermeiden von Fehlverzügen, Vorgarnbrüchen und Krachern.The filament properties are essential for avoiding false warping, roving breaks and cracks.

Zur Verhinderung von Fehlverzügen bzw. Vorgarnbrüchen muss das umwindende Filamentgarn bei einer Zugbeanspruchung des Vorgarnes genügend Reibungskräfte zwischen dessen Fasern aufbauen können, um zusammen mit der Festigkeit des Filamentgarnes eine ausreichende Festigkeit des Vorgarnes auszubilden. Dazu muss das Filamentgarn schon bei geringer Verdehnung eine ausreichend hohe Zugkraft entwickeln. Es ist deshalb bevorzugt, wenn das Kraft-Längenänderungs-Verhalten und der Titer des Filamentgarnes so abgestimmt sind, dass im Filamentgarn bei einer Verdehnung um 4% eine Mindestzugkraft von 10 cN entwickelt wird.To prevent false warping or roving breaks, the wrapping filament yarn must be able to build up enough frictional forces between its fibers when the roving is subjected to tensile stress, in order to form sufficient roving yarn strength together with the strength of the filament yarn. For this, the filament yarn has to develop a sufficiently high tensile force even at a low stretch. It is therefore preferred if the force-length change behavior and the titer of the filament yarn are coordinated in such a way that a minimum tensile force of 10 cN is developed in the filament yarn when stretched by 4%.

Es muss weiterhin gewährleistet sein, dass das Filamentgarn bei der üblichen Beanspruchung des Vorgarnes nicht im Bereich höherer bleibender Dehnungen beansprucht wird. Dies ist dann der Fall, wenn bei dessen Belastung mit 15 cN das Verhältnis von elastischer Dehnung zu Gesamtdehnung 80 % nicht unterschreitet.It must also be ensured that the filament yarn is not stressed in the area of higher permanent expansions when the roving is normally used. This is the case if the ratio of elastic elongation to total elongation does not fall below 80% when it is loaded with 15 cN.

Kracherbildung bzw. Schlupf des Filamentgarnes zwischen den Streckwerkszylindern kann verhindert werden, wenn insbesondere der Lieferzylinder ausreichend hoch belastet, der Zylinderbezug nicht zu hart und die Reisskraft des umwindenden Filamentgarnes nicht zu hoch ist. Als Grenze für die Reisskraft des Filamentgarnes kann bei den heutigen Streckwerkskonstruktiven maximal 100 cN vorausgesetzt werden.Crackling or slippage of the filament yarn between the drafting cylinders can be prevented if, in particular, the delivery cylinder is loaded sufficiently high, the cylinder cover is not too hard and the tensile strength of the wrapping filament yarn is not too high. A limit of 100 cN can be assumed as the limit for the tensile strength of the filament yarn in today's drafting machine designs.

Wegen der vergleichsweise hohen Festigkeit umwundener Vorgarne, ist das Abarbeiten auch von Spulen mit sehr hohem Gewicht durch Abrollen in herkömmlicher Weise möglich. Durch Aufspulen in einer Präzisions-Kreuzwicklung wird aber auch der Abzug über Kopf möglich. Dadurch können die Spulen besonders günstig im Gatter angeordnet werden.Because of the comparatively high strength of wound rovings, it is also possible to process bobbins with a very high weight by unrolling in a conventional manner. By winding in a precision cross winding, the pull-off is also possible overhead. As a result, the coils can be arranged particularly advantageously in the gate.

Anhand er nachfolgenden Figur und der Ausführungsbeispiele soll das Verfahren noch näher erläutert werden.The method is to be explained in more detail with reference to the following figure and the exemplary embodiments.

Die Fig. 1 stellt schematisch den Ablauf des Verfahrens dar:

  • Aus einem Vorratsbehälter 1 wird das Spinnfaserband 2 dem Streckwerk 3 einer Vorspinnmaschine zugeführt. Das im Streckwerk verfeinerte Spinnfaserband wird anschliessend durch eine Umwindeeinrichtung 4 geführt und dabei von einem Filamentgarn umwunden. Das dabei entstehende Vorgarn 5 wird mittels der Aufwindevorrichtung 6 auf die Spule 7 gebracht. Bei voller Vorgarnspule wird die Vorspinnmaschine stillgesetzt, die Vorgarnspulen mechanisch gewechselt, die vollen Spulen mittels eines Transportbandes zu einem Maschinenende gebracht, dort gesammelt und die Vorspinnmaschine wieder angefahren.
1 schematically shows the sequence of the method:
  • The spun fiber strip 2 is fed from a storage container 1 to the drafting system 3 of a prespinning machine. The spun fiber strip refined in the drafting device is then passed through a winding device 4 and thereby wound around a filament yarn. The resulting roving 5 is brought onto the bobbin 7 by means of the winding device 6. When the roving bobbin is full, the roving machine is stopped, the roving bobbins are changed mechanically, the full bobbins are brought to an end of the machine by means of a conveyor belt, collected there and the roving machine is started up again.

Die Vorgarnspulen 7 werden in einem Ablaufgatter 9 aufgesteckt, wobei die Vorgarne 5 in die Fadenführer 93 eingezogen werden. Mit der Transporteinrichtung 10 wird das Ablaufgatter 9 zur Spinnmaschine gebracht und dort zwischen den Streckwerken (11, 12) in Arbeitsposition gebracht. Die Vorgarne werden nun durch die Vorverzugszone 11 und die Hauptverzugszone 12 des Streckwerks geführt. Je nach Faserart kann dieses Streckwerk als Klemmstreckwerk oder als Durchzugsstreckwerk ausgeführt sein. In der Hauptverzugszone 12 wird das, das Vorgarn umwindende Filamentgarn beim Verziehen des Vorgarns zerrissen und dieses zur gewünschten Feinheit verzogen. Mittels der Zwirneinrichtung 13 erhält das Garn seine Drehung und wird dabei auf Kopse aufgewunden.The roving bobbins 7 are plugged into a drain creel 9, with the roving 5 in the thread leader 93 will be drafted. With the transport device 10, the discharge gate 9 is brought to the spinning machine and is brought into the working position between the drafting systems (11, 12). The rovings are now guided through the draft zone 11 and the main draft zone 12 of the drafting system. Depending on the type of fiber, this drafting system can be designed as a clamping drafting system or as a pulling drafting system. In the main draft zone 12, the filament yarn surrounding the roving is torn when the roving is drawn and this is drawn to the desired fineness. The twine receives its twist by means of the twisting device 13 and is thereby wound onto cops.

Beispiel 1example 1

Ein Faserband aus Baumwollfasern der Stärke 700 dtex wird mit einem Filamentgarn der Stärke 9 dtex und der Reissdehnung 20% zum Vorgarn umwunden. Dieses Vorgarn wird in einem Streckwerk zu der Feinheit 200 dtex verzogen und durch Drehen zum Garn verfestigt. Der Vorverzug war 1,5-fach. Das umwindende Filamentgarn riss grösstenteils in der Vorverzugszone, es wurden jedoch auch kurze Zeitabschnitte beobachtet, in denen das Vorgarn in der Vorverzugszone lediglich angespannt wurde. Dies führte zu Verzugsstörungen mit Dick- und Dünnstellen im Garn.A fiber band made of cotton fibers with a strength of 700 dtex is wound with a filament yarn with a strength of 9 dtex and an elongation at break of 20% to the roving. This roving is drawn to a fineness of 200 dtex in a drafting system and solidified by twisting to form the yarn. The advance was 1.5 times. The wrapping filament yarn tore for the most part in the pre-draft zone, but short periods of time were also observed in which the pre-yarn was only tensioned in the pre-draft zone. This led to distortion with thick and thin spots in the yarn.

Beispiel 2Example 2

Das Vorgarn aus Beispiel 1 wird in einem Streckwerk zu der Feinheit 200 dtex verzogen und durch Drehen zum Garn verfestigt. Der Vorverzug war 1,16-fach. Dabei wurde das Vorgarn in der Vorverzugszone lediglich angespannt. Die Breite des Vorgarnes war beim Einlauf in die Hauptverzugszone deutlich geringer als im Beispiel 1 und sehr konstant. Das Filamentgarn riss erst in der Hauptverzugszone. Irgendwelche Verzugsstörungen wurden dabei nicht beobachtet.The roving from Example 1 is drawn to a fineness of 200 dtex in a drafting system and solidified by twisting to form the yarn. The advance was 1.16 times. The roving was only tense in the pre-draft zone. The width of the roving when entering the main draft zone was significantly smaller than in Example 1 and very constant. The filament yarn only broke in the main draft zone. No distortion of delay was observed.

Claims (9)

1. A method for producing spun yarns from slivers of textile fibres, in which first of all the slivers are attenuated into rovings and these are wrapped with a filament yarn, whereupon the rovings are drawn in a drawing system having a predrafting zone and subsequently strengthened by, e.g., imparting twist, characterized in that the filament yams with which the rovings are wrapped are ruptured not in the predrafting zone but only in the main drafting zone.
2. A method according to claim 1, characterized in that at a given elongation at rupture of the filament yarns the draft in the predrafting zone is set so low that the rovings in the predrafting zone do not get stretched as far as the elongation at rupture of the filament yarn.
3. A method according to claim 1, characterized in that the filament yarns have such a high elongation at rupture that at predetermined draft ratios it is reached not in the predrafting zone but only in the main drafting zone.
4. A method according to claim 2 or 3, characterized in that the elongation at rupture of the filament yarns is the same as or greater than the predraft and less than the total draft.
5. A method according to claim 1, characterized in that a roving is subjected to drafting, which is wrapped with a filament yarn the tensile strength of which amounts at most to 100 cN.
6. A method according to claim 1, characterized in that a rovin is subjected to drafting, which is wrapped with a filament yarn the tensile force of which at an elongation an 4% amounts to at least 10 cN and in which the ratio of elastic elongation to total elongation at loading of 15 cN does not fall below the value of 80%.
7. A method according to claim 1, characterized in that the rollers of the drawing system are loaded adequately heavily and the roller coating is not choosen to be too hard, so that the filament yarns are gripped securely between the rollers of the drawing system.
8. A method according to claim 1, characterized in that the roving by stretching in the predrafting zone is collected for the entry into the main drafting zone.
9. A method according to claim 1, characterized in that the roving is drawn off the roving bobbins overhead and fed to the drawing system.
EP81901813A 1980-07-16 1981-06-22 Method for producing spun yarns Expired EP0062643B1 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE19803026901 DE3026901A1 (en) 1980-07-16 1980-07-16 Spun-yarn prodn. from filament wrapped roving - using low break draft to pretension filament without rupturing it
DE3026901 1980-07-16
DE19803049573 DE3049573A1 (en) 1980-12-31 1980-12-31 DEVICE FOR PRODUCING YARN BOBBINS
DE3049573 1980-12-31
DE19813105832 DE3105832A1 (en) 1981-02-18 1981-02-18 Process and apparatus for the production of wind-round yarns
DE3105832 1981-02-18
DE3120035 1981-05-20
DE19813120035 DE3120035A1 (en) 1981-05-20 1981-05-20 Process and apparatus for the production of spun fibre yarns

Publications (2)

Publication Number Publication Date
EP0062643A1 EP0062643A1 (en) 1982-10-20
EP0062643B1 true EP0062643B1 (en) 1984-12-05

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EP81901813A Expired EP0062643B1 (en) 1980-07-16 1981-06-22 Method for producing spun yarns

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US (1) US4484435A (en)
EP (1) EP0062643B1 (en)
JP (2) JPS57501290A (en)
DE (1) DE3167588D1 (en)
WO (1) WO1982000304A1 (en)

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GB1123894A (en) * 1966-06-07 1968-08-14 Imp Chemical Ind Ltd Imp Chemi Improvements in or relating to elastomer/non-elastomer staple fibre yarns
DE1760486A1 (en) * 1967-06-05 1971-12-09 Angelo Salmoiraghi Ing Automatic loading and unloading device for bobbin carriers for stretch-twisting machines
GB1289683A (en) * 1968-11-08 1972-09-20
FR1600741A (en) * 1968-12-10 1970-07-27
US3835639A (en) * 1971-12-08 1974-09-17 Rhyne P Method of making novelty yarn
US4164837A (en) * 1974-06-12 1979-08-21 Hoechst Aktiengesellschaft Method of forming a wrapped yarn
DE2428483B2 (en) * 1974-06-12 1977-03-03 Hoechst Ag, 6000 Frankfurt YARN CONSISTS OF A UNTWN SPIN FIBER BAND AND AT LEAST ONE FILAMENT YARN WRAPPING THIS SMALL SPIN FIBER BEND
DE2447715C3 (en) * 1974-10-07 1978-09-07 Hoechst Ag, 6000 Frankfurt Roving and process for its manufacture
US4019691A (en) * 1975-11-10 1977-04-26 Centralny Osrodek Badawxzorozwojowy Maszyn Wlokienniczych "Centamatex" Method and apparatus for winding yarn onto a cross-and-cone wound bobbin
DE2551679A1 (en) * 1975-11-18 1977-06-02 Schlafhorst & Co W DEVICE FOR TRANSPORTING REEL CASES
DE2753349C2 (en) * 1977-11-30 1983-03-24 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Method and device for piecing a wrapped yarn
US4226077A (en) * 1979-03-08 1980-10-07 Leesona Corporation Method and apparatus for manufacturing wrapped yarns
JPS5817298B2 (en) * 1978-10-09 1983-04-06 東レ株式会社 Filament yarn twisting number control device
DE2913762C2 (en) * 1979-04-05 1982-11-25 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Winding spinning machine

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WO1982000304A1 (en) 1982-02-04
US4484435A (en) 1984-11-27
DE3167588D1 (en) 1985-01-17
EP0062643A1 (en) 1982-10-20
JPS57501290A (en) 1982-07-22
JPH0229468U (en) 1990-02-26

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