EP0054652B1 - Dispositif pour la fabrication d'un retors élastique - Google Patents

Dispositif pour la fabrication d'un retors élastique Download PDF

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Publication number
EP0054652B1
EP0054652B1 EP81108395A EP81108395A EP0054652B1 EP 0054652 B1 EP0054652 B1 EP 0054652B1 EP 81108395 A EP81108395 A EP 81108395A EP 81108395 A EP81108395 A EP 81108395A EP 0054652 B1 EP0054652 B1 EP 0054652B1
Authority
EP
European Patent Office
Prior art keywords
thread
yarns
elastomer thread
elastomer
dtex
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
EP81108395A
Other languages
German (de)
English (en)
Other versions
EP0054652A1 (fr
Inventor
Gunter D'alquen
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.)
Krall and Roth Weberei GmbH and Co KG
Original Assignee
Krall and Roth Weberei GmbH and Co KG
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 Krall and Roth Weberei GmbH and Co KG filed Critical Krall and Roth Weberei GmbH and Co KG
Priority to AT81108395T priority Critical patent/ATE13914T1/de
Publication of EP0054652A1 publication Critical patent/EP0054652A1/fr
Application granted granted Critical
Publication of EP0054652B1 publication Critical patent/EP0054652B1/fr
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
    • 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

Definitions

  • the invention relates to a device for carrying out a method for producing an elastic thread, in which an elastomer thread of approximately 145 dtex to 310 dtex with two yarns with a thickness of 100 to 12500 dtex made of polyvinyl chloride, polyvinyl cyanide, polyacrylonitrile and / or wool threads is twisted by adhesion, the yarns being swollen on their surface before loosening and to achieve adhesion at a pressure between about 0.1 and 0.2 bar in superheated steam of about 70 ° C. for up to 10 minutes and the elastomer thread the twisting is given a delay in relation to the yarns.
  • the elastomer thread in the thread contracts after the release of the thread tension between the OE yarns surrounding it, whereby the elastomer thread becomes disadvantageously visible through the cover yarns, this disadvantage particularly in the case of synthetic fibers, such as fibers made of polyacrylonitrile, polyvinyl cyanide and / or Polyvinyl chloride, as well as wool yarns provided with flame retardant equipment occurs.
  • DE-A-2 811 329 has therefore disclosed an improved method of the type described above, in which a good bond with the elastomer thread can in any case be achieved by using roughened and swollen yarns which adhere more easily to the elastomer thread by steaming, without the use of expensive and adversely affecting the product quality of adhesives.
  • the elastomer thread is preferably twisted at about 3.5 times the warping, that is, tensioned.
  • US-A-3,303,640 shows the measure to avoid an oversupply of an elastomer thread by sliding friction without the sliding friction device in question serving to generate the necessary distortion of the threads; the distortion is rather generated by means of two rollers, the thread feed speed of which is different.
  • the necessary distortion of the elastomer thread is also given by different feed speeds of the corresponding rollers.
  • US-A-3657873 shows a device in which mutual thread distortion is addressed, but there is also no solution to the problems described above.
  • this object is achieved in a device of the type mentioned at the outset in that the distortion of the elastomer thread is generated before sliding by means of sliding friction on at least one friction surface, the sliding friction force being changeable in a time-controllable manner by a control device.
  • Preferred embodiments of the invention are the subject of the dependent claims. Instead of complex delivery and rotary cylinders, gearboxes and clutches as well as drive shafts, the invention simply provides brake shoes which impart the desired tension to the thread prior to twisting by sliding friction.
  • an elastic thread 22 is produced from an elastomer thread 10 and two yarns, preferably OE yarns. As described in the main patent, the three threads are twisted essentially parallel in a twisting ring 21 via a deflection roller 44 for the elastomer thread or guide rollers 38, 40, 42.
  • the non-elastic yarns 46 and 48 are pulled off their spools 24, 26 by the interaction of a pressure cylinder 32 which rests on the delivery cylinder 34. The conveying speed of the yarns is determined by the speed of rotation of the delivery cylinder 34.
  • the elastomer thread 10 is pulled off its supply roll 28.
  • the elastomer thread 10 Before the elastomer thread 10 is fed to the twisting ring 21 via the guide rollers 38, 44, it runs over at least one friction surface 20 of a brake shoe 12.
  • the pressing force acting on the elastomer thread in the direction of the surface normal of the friction surface is brought about in the exemplary embodiment shown by a second brake shoe 14 .
  • the thread is pressed between the friction surfaces, and depending on the pressing force on the friction surfaces, friction coefficient between thread and friction surface, length of the friction surface and thread diameter, the thread will generate a certain sliding friction force when sliding over the brake shoe or the brake shoes. It is precisely this sliding friction force that determines the distortion that is given to the elastomer thread compared to the yarn threads 46, 48.
  • the friction surfaces of the brake shoes do not necessarily have to have the shape shown in the exemplary embodiment in FIG. 1, but that a large number of other configurations can also be advantageous, depending on the special requirements.
  • the friction surface can also be elongated, parallel to the thread, so that a long friction surface and a correspondingly large friction force are generated.
  • a brake shoe 18 deflects the elastomer thread 10, which slides over a friction surface 50 of the brake shoe 18.
  • the effective length of the friction surface 50 will be very different depending on the position of the brake shoe 18 due to the asymmetrical shape of the friction surface, so that the thread tension can be varied.
  • This embodiment is particularly advantageous when it is desired to produce a thread that has a periodically variable thread tension.
  • the control device 16 which controls the brake shoe 12 by means of a stamp 36.
  • the stamp pressure against the abutment brake shoe 14 the elastomer thread 10 is pressed differently against the friction surface 20, so that the thread tension can be varied with the control device 16.
  • the control device 16 can be a simple threaded screw, possibly with a reduction, or else a more complex electronic, possibly programmable, automatically driven system.
  • Materials are used as friction threads 20, 50 which, with suitable friction coefficients, have little material abrasion with the elastomer thread.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (7)

1. Dispositif pour la mise en oeuvre d'un procédé de fabrication d'un retors élastique, selon lequel on retord, en assurant l'adhésion, un fil élastomère de 145 dtex à 310 dtex avec deux fils d'une résistance de 100 à 12 500 dtex en filaments de polychlorure de vinyle, polycyanure de vinyle, polyacrylonitrile et/ou laine, les fils étant gonflés à leur surface, sous une pression comprise entre environ 0,1 et 0,2 bar, à la vapeur chaude d'environ 70°C, jusqu'à 10 minutes, avant le retordage, pour les desserrer et obtenir l'adhésion, et le fil élastomère subissant, pour le retordage, un étirage par rapport aux filaments. caractérisé par le fait que l'étirage du fil élastomère (10) est produit, avant le retordage, au moyen d'un frottement de glissement contre au moins une surface de frottement (20), la force de frottement de glissement pouvant varier, à la demande, dans le temps, grâce à un moyen de commande (16).
2. Dispositif selon la revendication 1, caractérisé par le fait que le fil élastomère (10) est amené entre deux mâchoires de frein (12, 14) qui peuvent être serrées l'une contre l'autre par le moyen de commande (16).
3. Dispositif selon la revendication 1, caractérisé par le fait que le moyen de commande (16) présente une surface de frottement (20) réglable.
4. Dispositif selon la revendication 3, caractérisé par le fait que le réglage de la surface de frottement (20) est produit par rotation d'une des mâchoires de frein (18) qu'elle présente.
5. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que la force de frottement de glissement entre fil élastomère (10) et mâchoire(s) de frein (12, 14, 18) peut être commandée, de manière prédéterminée, de façon périodique dans le temps.
6. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que, dans une colonne d'anneaux de retordage (21), chaque étirage de fil élastomère peut être commandé individuellement au moyen de mâchoires de frein.
EP81108395A 1980-12-19 1981-10-16 Dispositif pour la fabrication d'un retors élastique Expired EP0054652B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108395T ATE13914T1 (de) 1980-12-19 1981-10-16 Vorrichtung zum herstellen eines elastischen zwirnes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3047956A DE3047956C2 (de) 1980-12-19 1980-12-19 Verfahren und Vorrichtung zum Herstellen eines elastischen Zwirns
DE3047956 1980-12-19

Publications (2)

Publication Number Publication Date
EP0054652A1 EP0054652A1 (fr) 1982-06-30
EP0054652B1 true EP0054652B1 (fr) 1985-06-19

Family

ID=6119644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108395A Expired EP0054652B1 (fr) 1980-12-19 1981-10-16 Dispositif pour la fabrication d'un retors élastique

Country Status (3)

Country Link
EP (1) EP0054652B1 (fr)
AT (1) ATE13914T1 (fr)
DE (2) DE3047956C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316266A1 (de) * 1983-05-04 1984-11-08 Bayer Ag, 5090 Leverkusen Elastisches flachgewebe und seine herstellung
CN107675317B (zh) * 2017-11-09 2020-03-17 广东溢达纺织有限公司 弹力纱及其加工方法
CN114232160A (zh) * 2021-12-24 2022-03-25 江苏恒力化纤股份有限公司 一种全消光仿棉涤纶纤维的制备方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2146966A (en) * 1937-11-22 1939-02-14 American Mills Company Elastic strand for elastic fabrics and method of producing the same
US2211434A (en) * 1939-06-01 1940-08-13 H & B American Machine Company Feeding and tensioning mechanism for strand wrapping machines
GB544873A (en) * 1940-11-19 1942-04-30 Us Rubber Co Improvements in method of making elastic yarn
US3234725A (en) * 1963-07-09 1966-02-15 Rohm & Haas Process for making elastic yarn
US3303640A (en) * 1963-12-11 1967-02-14 Hale Mfg Company Method of producing composite elastic yarn
US3657873A (en) * 1969-12-08 1972-04-25 Kirkland H Gibson Composite elastic core yarn
DE2214043C3 (de) * 1972-03-23 1975-01-16 Deutsche Rhodiaceta Ag, 7800 Freiburg Verfahren zur Herstellung eines gefachten Zwirn
DE2811329C2 (de) * 1978-03-16 1982-08-12 Krall & Roth Weberei GmbH & Co KG, 4050 Mönchengladbach Verfahren zum Herstellen eines bielastischen Zwirnes
DE3012753C2 (de) * 1980-04-02 1983-11-03 Krall & Roth Weberei GmbH & Co KG, 4050 Mönchengladbach Verfahren und Vorrichtung zum Herstellen eines elastischen Zwirnes

Also Published As

Publication number Publication date
DE3171050D1 (en) 1985-07-25
DE3047956C2 (de) 1983-10-20
DE3047956A1 (de) 1982-07-08
EP0054652A1 (fr) 1982-06-30
ATE13914T1 (de) 1985-07-15

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