EP1038997A1 - Dispositif pour l' entrelacement d'au moins un fil de fibres discontinues avec un fil élastique à base d'élasthane - Google Patents

Dispositif pour l' entrelacement d'au moins un fil de fibres discontinues avec un fil élastique à base d'élasthane Download PDF

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Publication number
EP1038997A1
EP1038997A1 EP99106310A EP99106310A EP1038997A1 EP 1038997 A1 EP1038997 A1 EP 1038997A1 EP 99106310 A EP99106310 A EP 99106310A EP 99106310 A EP99106310 A EP 99106310A EP 1038997 A1 EP1038997 A1 EP 1038997A1
Authority
EP
European Patent Office
Prior art keywords
yarn
nozzles
air
jets
yarns
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.)
Withdrawn
Application number
EP99106310A
Other languages
German (de)
English (en)
Inventor
Benno JL. Sukarno-Hatta 51 Grob
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SSM Schaerer Schweiter Mettler AG
Original Assignee
SSM Schaerer Schweiter Mettler AG
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 SSM Schaerer Schweiter Mettler AG filed Critical SSM Schaerer Schweiter Mettler AG
Priority to EP99106310A priority Critical patent/EP1038997A1/fr
Publication of EP1038997A1 publication Critical patent/EP1038997A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • 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
    • D01H13/08—Twist arresters
    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams

Definitions

  • the invention is in the field of the production of elastic yarns by air swirling or swirling.
  • Elastic yarns the possible uses of which are have increased significantly recently (e.g. underwear, sportswear, outerwear, Shirts, pullovers) are increasingly processed as composite yarns, namely in Form of winding yarns, twists and core yarns.
  • the twisted yarns are either by whirling (also referred to in the literature as AC for "air-covering") or by twisting (also known as CC for "conventional covering” in the literature) manufactured;
  • AC whirling
  • CC Conventional covering
  • the filament yarn is aerodynamically interlaced a kind of loop thread with the elastane.
  • the swirled yarn shows large volume differences, the elastane component being connected to the filament yarn only in a punctiform manner and the elastane yarn is partially visible.
  • the CC process is the elastane component completely covered by filament yarn and practically invisible, and that twisted yarn shows a relatively even structure.
  • the AC process has so far been limited to filament yarns and can be used for pure staple yarns are not used, the main reason being that the connection between the elastane component and filament yarn discontinuously on each other spaced points, so the two yarns between the connection points lie loosely next to each other.
  • This known device is now to be improved by the invention in such a way that by enabling high yarn speeds, the economy of the above new process can be increased significantly.
  • the stability of the improved from the elastic yarn and the staple yarn wrapped yarn so far that this can be easily processed.
  • the present invention relates at least to a device for air swirling a stacking yarn with elastane by means of three nozzles arranged one behind the other, which Whirl the yarn continuously with air, one in the two outer nozzles Twisting of the yarn in one direction and in the middle nozzle in the other direction he follows.
  • the device according to the invention is characterized in that in the yarn running direction means for blocking the rotation are provided before the first and after the last nozzle are.
  • these blocking agents are those according to the invention Device arranged offset relative to the axis of the nozzles Yarn guides formed.
  • the device for each yarn guide is opposite to the axis of the nozzles offset yarn deflection assigned.
  • the use of versus the nozzle and Garnachse offset yarn guides as a blocking agent has the advantage that much higher production speeds can be achieved. That through the twisting yarn formed has an extraordinarily high stability and can be processed very well, e.g. twisted, knitted or woven.
  • the device according to the invention serves as an accompanying function for folding to tie the elastic yarn with the staple yarn and allows thereby the "twisting" of elastic cotton yarn in double wire machines, which was previously not possible.
  • a third preferred embodiment of the device according to the invention is thereby characterized that the nozzles each other and the yarn guides from the nozzles each are equally spaced, the distance from the yarn guides to the adjacent one Nozzle is less than the distance between the nozzles.
  • The is preferably Distance of the yarn guides from the nozzles about half the distance between the Nozzles.
  • the distance between the nozzles is between 30 and 80 mm and is preferably 44 mm.
  • a further preferred embodiment of the device according to the invention is thereby characterized in that the nozzles are connected to a chamber-like air reservoir are, which has two compressed air connections, which are arranged so that at all Nozzles have a uniform air flow.
  • the swirling device designated by the reference symbol V essentially exists from a serving as an air reservoir, box-shaped chamber 1 with three on the Chamber assembled and from this with compressed air fed nozzles 2, 2 'and 2 "and with bearing arms (not shown) fixed to or attached to the chamber Yarn guide rollers 3 and deflection rollers 4.
  • the chamber 1 also has two compressed air connections 5 on.
  • the device V is for installation in an AC (Air Covering) machine provided, in which the device V at least one staple yarn F and Elastane yarn E for interlacing and the resulting from interlacing Umwindegarn U is guided by the device V to a winding AW.
  • the direction of the thread is indicated by an arrow A.
  • the yarn is preferably obtained through the middle one Nozzle 2 'has a Z-turn and through the outer nozzles 2 and 2 "an S-turn.
  • the Swirling takes place through the nozzles 2, 2 'and 2 "depending on the yarn materials and their fineness in the flow, in counterflow or in neutral flow.
  • the compressed air connections 5 of the chamber 1 are arranged symmetrically and are in the Middle between the nozzles 2, 2 'and 2', 2 ", so that in the area of the feed lines to the Nozzles have the same pressure and flow conditions and are present on all nozzles uniform air flow takes place.
  • the arranged outside the outer nozzles 2 and 2 " Yarn guide rollers 3 are offset against the axis of the nozzles 2, 2 'and 2 ", so that the yarns F and E and the wrapping yarn U easily out of the axis of the nozzles 2, 2 'and 2 "are deflected and not only lie tangentially on the yarn guide rollers 3, but also wrap them around at a certain angle. This ensures that the yarn twist caused by the outer nozzles 2 and 2 ", that of these nozzles too the yarn guide rollers 3 runs, is blocked on the yarn guide rollers and not can continue.
  • the distance between the outer nozzles 2, 2 "and the yarn guide rollers 3 is half the distance between the nozzles, preferably 22 mm.
  • the size of this Distance has a significant impact on the quality of the swirl and therefore on the quality of the thread.
  • the lateral displacement of the thread guide rollers 3 relative to the nozzle axis is relatively small and is a few, preferably about 2 to 10 mm. This offset enables a higher thread speed.
  • Every thread guide roll 3 is assigned a deflection roller 4, which is in the opposite direction to the axis of the nozzles is staggered.
  • the deflection rollers 4 are for setting the thread tension adjustably fastened on its carrier. Both the yarn guide rollers 3 and the guide rollers 4 are ball-bearing.
  • the air supply to the nozzles 2, 2 'and 2 " is controlled by means of a proportional valve (not shown). This brings the air pressure to the thread speed adapted, which is particularly important for fine yarns. If with the device Single thread to be swirled with elastane is to control the air pressure in Thread speed function to ensure the quality of the interlacing required. Such a control proves to be in the case of thread breaks and their removal also very beneficial.
  • Thread insulation for example a disc brake, can be provided, which the clamping force reduced when starting with increasing thread speed and when braking and stopping increased with decreasing thread speed.
EP99106310A 1999-03-26 1999-03-26 Dispositif pour l' entrelacement d'au moins un fil de fibres discontinues avec un fil élastique à base d'élasthane Withdrawn EP1038997A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99106310A EP1038997A1 (fr) 1999-03-26 1999-03-26 Dispositif pour l' entrelacement d'au moins un fil de fibres discontinues avec un fil élastique à base d'élasthane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99106310A EP1038997A1 (fr) 1999-03-26 1999-03-26 Dispositif pour l' entrelacement d'au moins un fil de fibres discontinues avec un fil élastique à base d'élasthane

Publications (1)

Publication Number Publication Date
EP1038997A1 true EP1038997A1 (fr) 2000-09-27

Family

ID=8237863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99106310A Withdrawn EP1038997A1 (fr) 1999-03-26 1999-03-26 Dispositif pour l' entrelacement d'au moins un fil de fibres discontinues avec un fil élastique à base d'élasthane

Country Status (1)

Country Link
EP (1) EP1038997A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1081259A1 (fr) * 1999-09-01 2001-03-07 Schärer Schweiter Mettler AG Dispositif de contrôle d'alimentation en air d'une buse d'un dispositif d'enchevêtrement de fils

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2110461A1 (fr) * 1970-10-15 1972-06-02 Teijin Ltd
US3775958A (en) * 1970-06-01 1973-12-04 Celanese Corp Pneumatic false twisting interlacer
US4736578A (en) * 1985-04-23 1988-04-12 E. I. Du Pont De Nemours And Company Method for forming a slub yarn
FR2735501A1 (fr) * 1995-06-15 1996-12-20 Payen & Cie L Procede pour la fabrication d'un fil guipe elastique et nouveau type de fil ainsi obtenu

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775958A (en) * 1970-06-01 1973-12-04 Celanese Corp Pneumatic false twisting interlacer
FR2110461A1 (fr) * 1970-10-15 1972-06-02 Teijin Ltd
US4736578A (en) * 1985-04-23 1988-04-12 E. I. Du Pont De Nemours And Company Method for forming a slub yarn
FR2735501A1 (fr) * 1995-06-15 1996-12-20 Payen & Cie L Procede pour la fabrication d'un fil guipe elastique et nouveau type de fil ainsi obtenu

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1081259A1 (fr) * 1999-09-01 2001-03-07 Schärer Schweiter Mettler AG Dispositif de contrôle d'alimentation en air d'une buse d'un dispositif d'enchevêtrement de fils

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