EP0162787B1 - Verfahren zum Herstellen eines umsponnenen Garnes - Google Patents

Verfahren zum Herstellen eines umsponnenen Garnes Download PDF

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Publication number
EP0162787B1
EP0162787B1 EP85420005A EP85420005A EP0162787B1 EP 0162787 B1 EP0162787 B1 EP 0162787B1 EP 85420005 A EP85420005 A EP 85420005A EP 85420005 A EP85420005 A EP 85420005A EP 0162787 B1 EP0162787 B1 EP 0162787B1
Authority
EP
European Patent Office
Prior art keywords
fibers
core
brought
drawing system
onto
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
Application number
EP85420005A
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English (en)
French (fr)
Other versions
EP0162787A1 (de
Inventor
Jean-Louis Faure
Marcel Schoumacher
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Devtex
Original Assignee
Devtex
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Filing date
Publication date
Application filed by Devtex filed Critical Devtex
Publication of EP0162787A1 publication Critical patent/EP0162787A1/de
Application granted granted Critical
Publication of EP0162787B1 publication Critical patent/EP0162787B1/de
Expired legal-status Critical Current

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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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/14—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using grooved rollers or gear-wheel-type members
    • 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
    • D02G3/36—Cored or coated yarns or threads
    • D02G3/367—Cored or coated yarns or threads using a drawing frame
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies

Definitions

  • the present invention relates to an improvement in spinning techniques for making fiber yarns and, more particularly, fiber yarns obtained by using EP-A 0 085 635
  • They relate more specifically to an improvement which makes it possible to obtain yarns of fibers having a structure such that they comprise a central core made up of staple fibers, this core being covered with an external sheath also made up of staple fibers, these fibers being able to be of the same or different nature.
  • the fibers to form the internal core are subjected to a false twist and elementary fibers are projected onto this yarn, upstream of the false twist spindle, the projection of said elementary fibers onto the core in the area of torsional rise being produced by means of a movable guide surface on which said fibers are delivered tangentially and which tends to exert a tensile force on the free end of said fibers , the core being moved tangentially relative to the aforementioned guide surface in a direction concurrent with the direction of supply of the fibers.
  • a rotating condenser guide disposed at the outlet of the fiber drawing system is used as the movable guide surface.
  • the core is also constituted by a spun of fibers produced directly on the same machine
  • a second drawing system is provided for bringing the fibers intended to form this core.
  • the method according to the invention makes it possible to reduce fiber losses as well as to obtain finer and more regular yarns.
  • common drawing system means either a single drawing system for all of the fibers or two systems operating simultaneously in parallel.
  • the fibers will however have different lengths, the fibers intended to form the core having a length greater than those intended to form the covering.
  • the material or materials allowing the production of a yarn according to the invention can be brought to the drawing system either in the form of an intimate mixture or in the form of separate rovings and / or ribbons.
  • the method according to the invention makes it possible to easily vary the percentage of each of the materials.
  • FIGS. 1, 3, 5, 7 and 9 illustrate, schematically, a working position of a machine allowing the implementation of the method according to the invention, that is to say - say allowing to achieve in one step, a core spun comprising a core formed of staple fibers and a covering also of staple fibers.
  • FIG. 2 shows in more detail the manner in which the core / covering fiber junction is produced, FIGS. 4, 6, 8 and 10 showing different possibilities for the manner in which the fibers are brought to the common drawing system.
  • the installation for implementing the method according to the invention essentially comprises a conventional stretching system, one for each working position, designated by the general reference (1) and which , in this case, is a conventional sleeve system, well known to technicians and which will therefore not be described in detail.
  • a conventional stretching system one for each working position
  • any other equivalent stretching system could be used.
  • a guide surface (4) Downstream of the last pair of stretching cylinders (2-3) of the stretching system (1) is arranged a guide surface (4) constituted by a rotating disc, surface which has a peripheral groove (5), in the form of V and the bottom of which is pierced with orifices (6) allowing a depression to be created there.
  • the rotary guide surface is arranged so that the bottom of the groove is substantially arranged in the extension of the axis of the drawing train (1).
  • a friction false-twist spindle (7), with crossed belts for example, is arranged downstream of the rotary condenser guide (4.)
  • a call system (8) is provided before the winding means (9) which, in in this case, will be constituted by a winding system with tangential drive not communicating additional torsion to the spun yarn formed.
  • any other winding system which possibly makes it possible to communicate an additional twist could be used.
  • the core of the yarn is obtained directly from the fibers introduced into the common drawing system (1) that this installation comprises.
  • a guide element (10) constituted for example by a ceramic diabolo, guide arranged so that the path of the fibers to the exit of the stretching rollers (2-3) is such that a part of the fibers comes to envelop said guide surface while another part is distant from said guide surface (4) to then be brought substantially tangentially to said surface in the extension of the zone of action of the false twist spindle (7), downstream from the point where the first part of the fibers is distributed on said guide surface.
  • the fibers will have different lengths, the longest fibers being able to form either the core or the covering.
  • the longest fibers will form the core, in normal operation, they will then be caused to pass around the deflecting guide (10) while the shortest fibers (fibers 12) will be projected onto the guide surface ( 4) and will wrap the latter to then be trapped in the core wire, the twist communicated by the pin (7) going up along this wire.
  • Figures 11, 12 and 13 illustrate a variant according to the invention in which the common drawing system (1) consists of two sleeve systems (la-1b), operating in parallel, a device commonly used in spinning fibers.
  • the common drawing system (1) consists of two sleeve systems (la-1b), operating in parallel, a device commonly used in spinning fibers.
  • one of the systems for example the system (1a) makes it possible to deliver the fibers intended to form the cover while the other system (1b) delivers the fibers intended to form the core.
  • the fibers coming from the system (1 a) are delivered on a guide surface (4), which is rotary, and come to wrap this surface whereas the other fibers coming from the system (1 b), and which are intended to form the core, will be brought vertically, tangentially to this surface in the extension of the false twist spindle (7).
  • the twist communicated by the spindle (7) goes back as previously along the wire formed and allows to trap the fibers from the drawing system (1).
  • the condenser guide (4) has a different structure and is generally in the form of a rotary drum arranged parallel to the outlet of the drawing system (1). , this rotary drum comprising a perforated part (4a) located on the side of the fiber outlet and a larger diameter part (4b) located at the rear and which makes it possible to guide the fibers.
  • This condenser element is arranged so that the fibers intended to form the core tangent to the surface (4a) while the fibers intended to form the covering envelop this surface.
  • a core spun according to the invention is produced under the following conditions.
  • the food material consists of a cotton ribbon formed from a mixture comprising 15% of fibers between 2.8 cm and 4 cm and 85% of short fibers between 1.5 cm and 2.8 cm.
  • This ribbon R has a title of 33000 dtex.
  • the speed V o of the last pair of stretching cylinders (2-3) is reduced to 200 m / min.
  • the guide surface is constituted by a condenser guide (4), rotary, subjected to an internal suction, and rotating at a speed of 260 m / min.
  • the surface of this guide has a V-shaped groove inclined at 120 °.
  • This guide is arranged immediately at the outlet of the last pair of the stretching cylinders (2-3), so that the bottom of the groove is arranged substantially in the axis of the stretching system.
  • a false twist spindle (7) is arranged which is constituted by a friction spindle with crossed belts, inclined at 45 °, the linear speed of the belts being adjusted to 550 m / min.
  • the call cylinders (8) have a speed V 2 substantially equal to the speed V o of the cylinders (2-3) and the winding is carried out at this same speed.
  • the implementation for obtaining a yarn according to the invention is as follows.
  • a core yarn is obtained, the core of which itself is made up of fibers, the peripheral fibers being perfectly bonded to this core.
  • This yarn has a count of 330 dtex and has very good textile characteristics both from the resistance point of view and from the regularity point of view. It can be used as it is as well as in weaving as in knitting.
  • the food material consists of two cotton wicks (R1-R2), the cotton wick R1 being a combed cotton having a count of 3300 Dtex and the cotton wick R2 also being a combed cotton wick having a titer of 3200 dtex, but whose fibers are slightly shorter than those of wick R1.
  • the two wicks R1 and R2 are introduced simultaneously inside a drawing system (1) but are, in this case, kept separate from each other inside the system d drawing as shown in Figure 6.
  • a core yarn is obtained having a tite of 200 dtex, the core and the cover of which are made of cotton fibers.
  • Such a yarn can be used interchangeably in weaving or knitting.
  • two ribbons R1 and R2 are used as food material.
  • the ribbon R1 is a polyester ribbon of 33,000 dtex, the cut of the polyester being 40 mm.
  • the ribbon R2 is a cotton ribbon, also of 33,000 dtex, the average cotton length being 30 mm.
  • the polyester fibers are, at the outlet of the stretching cylinder (2) and (3), deflected around the guide (10) while the cotton fibers are projected onto the guide surface (4).
  • the food material consists on the one hand, of a polyester wick R1 and on the other hand, of a cotton ribbon R2.
  • the polyester wick is a 4800 Dtex wick and consists of fibers 40 mm long.
  • the cotton ribbon has a count of 33,000 dtex, the cotton fibers having an average length of 30mm.
  • the two food materials R1 and R2 are brought into parallel inside the stretching system (1) as illustrated in FIG. 8. They are kept separate by means of lateral guides.
  • the cotton fibers are deflected around the guide (10) while the polyester fibers are projected onto the guide surface (4) to then be delivered onto the cotton-based core (11).
  • a core yarn is obtained, the core of which consists essentially of cotton fibers and is covered with polyester fibers.
  • Example 4 This example is similar to Example 4 except that the materials are reversed and that a cotton wick R1 and a polyester ribbon R2 are used.
  • the polyester fibers are deflected around the guide (10) while the cotton fibers are projected onto the guide surface (4) to then be delivered onto the polyester-based core (11).
  • a core yarn is obtained, the core of which consists essentially of polyester fibers and is covered with cotton fibers.
  • Such a yarn can also be used directly both in weaving and hosiery.
  • Example 2 This example is similar to Example 2 except that a polyester wick and a cotton wick having the same titer of 3300 Dtex are used.
  • a core yarn is obtained, the core of which is made of polyester, the cotton fibers being a cover.
  • Such a yarn can also be used as it is in weaving and knitting.
  • a system consisting of two stretching trains (1 a-1 b) is used as the common drawing system (1).
  • a movable guide surface (4) is arranged in the form of a rotary drum comprising a perforated cylindrical part (4a) disposed laterally with respect to to a part of larger diameter (4b).
  • This rotary guide is arranged parallel to the outlet of the drawing system (1 a-1 b), the fibers coming from the system (1a) being deflected to wrap the surface (4a) while those coming from the system (1b) pass tangentially to this surface (4a) to be brought directly to the false twist spindle (7).
  • the torsion communicated by the spindle (7) goes up along the yarn formed substantially up to the vicinity of the outlet of the drawing system (1-2). The fibers from the system (1 a) are trapped in the core thus formed.
  • a core spun is produced using as food material a cotton wick R1 and a polyester wick R2 each having a count of 3300 Dtex.
  • the cotton fibers are introduced into the stretching system (la) and are deflected at the outlet of the stretching rollers (2-3) to be brought to the guide surface (4) so as to envelop this surface.
  • the polyester fibers R2 are introduced into the stretching system (1b) and are, in turn, brought vertically, parallel to the guide surface (4), downstream of the cotton fibers.
  • a core yarn is also obtained, the core of which consists essentially of polyester fibers covered with cotton fibers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (5)

1. Verfahren zum Herstellen eines aus Fasern gebildeten Garnes mit einer zentralen Seele, die aus diskontinuierlichen Fasern besteht, welche mit einer äusseren, ebenfalls aus diskontinuierlichen Fasern bestehenden Hülle umgeben sind, wobei man die zur Bildung der inneren Seele vorgesehenen Fasern einer kurzzeitigen Vordrehung unterzieht und auf das so hergestellte Garn (11) stromaufwärts der Vordrehspindel Ausgangsfasern (12) aufschleudert und das Aufschleudern der Ausgangsfasern (12) auf die Seele in den Bereich des Anhebens des Verdrehens mittels einer beweglichen Führungsoberfläche erfolgt, auf welche die Fasern tangential aufgebracht werden, und die dazu neigt, eine Zugkraft auf ihr freies Ende auszuüben, wobei ferner die Seele tangential zur Führungsoberfläche entlang einer Richtung bewegt wird, die durch denselben Punkt wie die Förderrichtung der Fasern geht, dadurch gekennzeichnet,
- dass die Gesamtheit der Fasern (Seele und Beschichtung) der Wirkung eines gemeinsamen Streckersystems (1) ausgesetzt ist,
- dass am Ausgang des gemeinsamen Streckersystems (1) ein Teil der Fasern weiterlaufend auf die bewegliche Führungsoberfläche (4) gefördert wird, während der andere Teil der Fasern von der Oberfläche entfernt und dann wieder in Verbindung mit dieser stromabwärts des Aufschleuderbereiches des einen Teiles der Fasern auf die Oberfläche mitgenommen wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Fasern, die die Seele bilden, und diejenigen, die die Beschichtung bilden, aus ähnlichen oder aus verschiedenen Materialien bestehen.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Fasern, die zur Herstellung der Seele bestimmt sind, eine grössere Länge aufweisen als diejenigen, die zur Herstellung der Beschichtung bestimmt sind.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Materialien, die eine Herstellung des Garnes erlauben, dem Streckersystem (1) als inniges Gemisch zugeführt werden.
5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Materialien, die zur Herstellung des Garnes vorgesehen sind, als Maschen und/oder als einzelne Bänder zugeführt werden.
EP85420005A 1984-02-24 1985-01-10 Verfahren zum Herstellen eines umsponnenen Garnes Expired EP0162787B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8403083A FR2560230B1 (fr) 1984-02-24 1984-02-24 Procede pour l'obtention d'un file de fibres
FR8403083 1984-02-24

Publications (2)

Publication Number Publication Date
EP0162787A1 EP0162787A1 (de) 1985-11-27
EP0162787B1 true EP0162787B1 (de) 1988-09-14

Family

ID=9301503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85420005A Expired EP0162787B1 (de) 1984-02-24 1985-01-10 Verfahren zum Herstellen eines umsponnenen Garnes

Country Status (7)

Country Link
US (1) US4584830A (de)
EP (1) EP0162787B1 (de)
JP (1) JPS60209024A (de)
KR (1) KR850005888A (de)
DE (1) DE3564969D1 (de)
ES (1) ES8606544A1 (de)
FR (1) FR2560230B1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61186541A (ja) * 1985-02-08 1986-08-20 村田機械株式会社 紡績糸
FR2583783A1 (fr) * 1985-06-25 1986-12-26 Asa Sa Dispositif pour etirer, condenser et transporter une meche de fibres lors d'une operation de filature.
US4672800A (en) * 1985-10-24 1987-06-16 Ernst Fehrer Process and apparatus for making a yarn
JPS62117830A (ja) * 1985-11-15 1987-05-29 Murata Mach Ltd 紡績糸の製造装置
JPH0791704B2 (ja) * 1986-01-08 1995-10-04 金井 宏之 ベルト式精紡装置
US4823545A (en) * 1987-08-31 1989-04-25 Maschinenfabrik Rieter Ag Method of and apparatus for false-twist spinning
DE3927936A1 (de) * 1988-09-29 1990-04-05 Fehrer Ernst Vorrichtung zum herstellen eines garnes
US5531063A (en) * 1989-06-15 1996-07-02 The United States Of America As Represented By The Secretary Of The Department Of Agriculture Device for forming core/wrap yarn
US4976096A (en) * 1989-06-15 1990-12-11 The United States Of America As Represented By The Secretary Of Agriculture System for producing core/wrap yarn
US4922701A (en) * 1989-06-30 1990-05-08 The United States Of America As Represented By The Secretary Of Agriculture System for producing yarn
US5228281A (en) * 1989-11-04 1993-07-20 Fritz Stahlecker Arrangement and method for false-twist spinning
DE3939777A1 (de) * 1989-12-01 1991-06-06 Fritz Stahlecker Vorrichtung zum falschdrallspinnen
DE19815051A1 (de) 1998-04-03 1999-10-14 Zinser Textilmaschinen Gmbh Spinnmaschine mit einem einen Saugrotor aufweisenden Streckwerk
DE19815053B4 (de) * 1998-04-03 2006-01-05 Saurer Gmbh & Co. Kg Verfahren zum Herstellen eines Scheinzwirnes und Spinnmaschine hierfür
DE19815054C5 (de) * 1998-04-03 2007-06-14 Saurer Gmbh & Co. Kg Verfahren und Spinnmaschine zum Herstellen von Coregarn
KR101503402B1 (ko) * 2013-07-12 2015-03-17 삼성디스플레이 주식회사 슬릿 노즐 및 이를 이용한 표시장치 제조방법
DE102013108094A1 (de) * 2013-07-29 2015-01-29 Maschinenfabrik Rieter Ag Spinnmaschine und Falschdralleinrichtung
CN105392931B (zh) * 2013-07-29 2018-01-23 里特机械公司 纺织机和假捻装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB111654A (en) * 1916-12-01 1918-04-16 William Davis Hartshorne Improvements in and relating to Yarns, Fabrics made therefrom, and Means for Producing such Yarns.
GB1256528A (de) * 1968-12-23 1971-12-08
FR2461040A1 (fr) * 1979-07-09 1981-01-30 Inst Textile De France Procede et dispositif pour l'obtention d'un fil presentant sur sa longueur des zones de torsion alternativement de sens inverse
US4365464A (en) * 1981-01-28 1982-12-28 The United States Of America As Represented By The Secretary Of Agriculture Apparatus to uniformly control wrapping a filament around the surface of a spun core yarn during ring spinning
FR2520389A1 (fr) * 1982-01-26 1983-07-29 Asa Sa Dispositif pour etirer, condenser et transporter une meche de fibres lors d'une operation de filature
US4489540A (en) * 1982-01-26 1984-12-25 Asa S.A. Process and device for obtaining a spun yarn of fibres comprising an internal core and novel types of spun yarns thus made

Also Published As

Publication number Publication date
FR2560230B1 (fr) 1987-12-04
DE3564969D1 (en) 1988-10-20
EP0162787A1 (de) 1985-11-27
JPS60209024A (ja) 1985-10-21
ES8606544A1 (es) 1986-04-16
FR2560230A1 (fr) 1985-08-30
KR850005888A (ko) 1985-09-26
ES540648A0 (es) 1986-04-16
US4584830A (en) 1986-04-29

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