EP0409752A1 - Verfahren und Maschine zur kontinuierlichen Herstellung eines elastischen Fadens aus Elasthan - Google Patents

Verfahren und Maschine zur kontinuierlichen Herstellung eines elastischen Fadens aus Elasthan Download PDF

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Publication number
EP0409752A1
EP0409752A1 EP90420347A EP90420347A EP0409752A1 EP 0409752 A1 EP0409752 A1 EP 0409752A1 EP 90420347 A EP90420347 A EP 90420347A EP 90420347 A EP90420347 A EP 90420347A EP 0409752 A1 EP0409752 A1 EP 0409752A1
Authority
EP
European Patent Office
Prior art keywords
yarn
elasthane
stretched
thread
wire
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
Application number
EP90420347A
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English (en)
French (fr)
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EP0409752B1 (de
Inventor
Pierre Payen
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.)
L Payen et Cie SA
Original Assignee
L Payen et Cie SA
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 L Payen et Cie SA filed Critical L Payen et Cie SA
Priority to AT90420347T priority Critical patent/ATE72843T1/de
Publication of EP0409752A1 publication Critical patent/EP0409752A1/de
Application granted granted Critical
Publication of EP0409752B1 publication Critical patent/EP0409752B1/de
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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

Definitions

  • the invention relates to a method for the continuous production of an elastic yarn based on elasthane. It also relates to a machine for implementing this method.
  • the invention overcomes these drawbacks. It relates to a process and a machine for the continuous production on a single working position of an assembled elastane thread which is rapid, economical, and makes it possible notably to reduce the quantity of elasthane threads and consequently the price of this yarn, while increasing the fineness of the yarns made in this way, finesse which is more and more sought after in particular in the manufacture of stockings and tights.
  • this improved technique makes it possible to use the yarns produced in this way at knitting speeds which are incommensurate with that used with bare yarns.
  • This improved process for the manufacture of an elastic thread is characterized in that it consists continuously and in the same working position: - firstly, to be assembled at a twist of less than five hundred (500) turns / meter (t / m) and without torsional result, a bare elastane thread stretched with a partially drawn multifilament synthetic thread; - Then, in a second step, subjecting this assembled yarn to additional hot drawing to complete the residual drawing, on the one hand of the partially drawn multifilament yarn, and on the other of the stretched elasthane yarn; - And finally, to rewind the elastic thread obtained.
  • a "partially drawn multifilament synthetic yarn” is a synthetic yarn which has undergone only partial drawing, that is to say only partial molecular orientation.
  • Such threads are well known and are commonly called “POY” (pre-oriented yarn) or sometimes MOY (medium oriented yarn).
  • POY pre-oriented yarn
  • MOY medium oriented yarn
  • the coating wire is a partially drawn polyamide wire, having a residual stretching rate of the order of 10 to 25%; - the elastane thread is drawn in a ratio of three.
  • this twist is less than five hundred (500) turns / meter (t / m). Indeed, if we assemble with higher twists, on the one hand we unnecessarily increase the cost price without proportional improvement, and on the other hand and above all we affect the appearance of the finished products (tights).
  • this twist for fine threads intended for the manufacture of stockings and tights that is to say in which an elasthane thread of the order of twenty dtex is used, must be between one hundred and fifty and three hundred ( 150 and 300) turns / meter (t / m), advantageously close to two hundred and fifty (250) turns / meter (t / m).
  • the invention also relates to a machine for manufacturing such an elastic thread.
  • This machine consisting of a plurality of working positions is characterized in that each position includes: - a hollow spindle with a turntable, intended to receive a fixed winding of spandex thread, immobilized during the rotation of the tray; - A means of feeding a multifilament wire partially stretched from a winding to the turntable of the hollow spindle; - a means of drawing the elastane thread; - A means for assembling the partially stretched multifilament yarn with the stretched elastane yarn without torsional result; - a drawing train of the assembled yarn formed to complete the residual drawing of the multifilament yarn and of the stretched elasthane yarn, consisting of two pairs of rollers respectively for drawing and drawing; - a heater arranged between the two pairs of rollers; - A winding member of the elastic thread formed.
  • a thread (2) of polyamide 6.6 POY (pre-oriented yarn) having a titer of seventeen dtex formed from six parallel elementary filaments is taken on the parade.
  • This POY wire (2) after additional stretching makes it possible to obtain a standard fourteen dtexsix strand wire.
  • This coating wire (2) then passes through a tensioner (3), then enters the hollow axis (4) of a hollow spindle designated by the general reference (5), carried by a bearing (6) and driven tangentially by a belt (7).
  • the bearing (6) can be disengaged by moving the belt (7) away.
  • the partially stretched coating wire (2) crosses the axis of the spindle (4), enters tangentially into the turntable (8) and forms a balloon (9) limited by the balloon stop barbin (10).
  • the spindle (5) carries a winding (11) of elasthane wire (12), for example a wire marketed by DUPONT DE NEMOURS under the registered trademark LYCRA of twenty two dtex (mono or multifilamentary).
  • elasthane wire (12) is strongly stretched by the braking that the tensioner exerts on it, while it is pulled up by the positive roll call from the first roll (14) of the drawing train.
  • the elastane yarn (12) thus elongated enters the barb (10) where it is assembled with the yarn (2) with the effect of false twisting, but without the result of twisting.
  • the assembled yarn obtained (20) then enters a drawing train formed by two pairs of rollers or capstans, respectively of call (14) and drawing (15) to undergo a complementary drawing intended to complete the drawing. residual on the one hand, multifilament yarn (2) partially stretched and on the other hand, stretched elasthane yarn (12).
  • this additional characteristic drawing is carried out hot, that is to say by passing through a known thermal oven (16).
  • the finished elastic assembled thread (21) is returned by known means (17) in the form of a coil (18).
  • the coating wire (2) is a polyamide 6.6 POY wire. of seventeen dtex - six strands capable, after drawing, of forming a standard wire of fourteen dtex - six strands.
  • the elasthane core thread (12) is a LYCRA thread (registered trademark EI DUPONT DE NEMOURS) of twenty-two dtex, which is stretched after passing over the tensioner (13) by about three times to be brought to seven dtex.
  • the speed ratio between the two capstans (14) and (15) is adjusted to around 20% and the temperature of the oven (16) to 160 ° C.
  • an elastic assembled thread (21) consisting of an elasthane thread of about six dtex, approximately rectilinear, covered in a regular manner, but not contiguous by turns of polyamide 6.6 of fourteen dtex - six strands.
  • the final title of this thread (21) is twenty dtex, which was very difficult to obtain economically to date. This yarn is ideal for making stockings and tights on high-speed knitting machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Socks And Pantyhose (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP90420347A 1989-07-21 1990-07-19 Verfahren und Maschine zur kontinuierlichen Herstellung eines elastischen Fadens aus Elasthan Expired - Lifetime EP0409752B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90420347T ATE72843T1 (de) 1989-07-21 1990-07-19 Verfahren und maschine zur kontinuierlichen herstellung eines elastischen fadens aus elasthan.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8910113A FR2649999B1 (fr) 1989-07-21 1989-07-21 Procede et machine pour la fabrication en continu d'un fil elastique a base d'elasthane
FR8910113 1989-07-21

Publications (2)

Publication Number Publication Date
EP0409752A1 true EP0409752A1 (de) 1991-01-23
EP0409752B1 EP0409752B1 (de) 1992-02-26

Family

ID=9384183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420347A Expired - Lifetime EP0409752B1 (de) 1989-07-21 1990-07-19 Verfahren und Maschine zur kontinuierlichen Herstellung eines elastischen Fadens aus Elasthan

Country Status (8)

Country Link
US (1) US5154044A (de)
EP (1) EP0409752B1 (de)
JP (1) JP2818267B2 (de)
AT (1) ATE72843T1 (de)
CA (1) CA2019640C (de)
DE (1) DE69000025D1 (de)
ES (1) ES2029931T3 (de)
FR (1) FR2649999B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059166B4 (de) * 2000-11-29 2004-01-15 BSH Bosch und Siemens Hausgeräte GmbH Backofentür

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267430A (en) * 1989-07-21 1993-12-07 L. Payen Et Cie Apparatus for the continuous production of an elastane-based elastic yarn
DE10019555C2 (de) * 2000-04-20 2003-06-26 Hamel Ag Arbon Verfahren zur Herstellung von elastischen Umwindegarnen
US20110167779A1 (en) * 2008-07-30 2011-07-14 Invista North America S.A.R.L. Multi-package buckets, systems and methods of forming yarn, and apparatus for twisting or cabling yarn
CN102534983B (zh) * 2011-12-30 2014-07-16 浙江宝娜斯袜业有限公司 丝袜的组织结构及丝袜

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA644248A (en) * 1962-07-03 Seidl Lois Apparatus for twisting together two threads to produce a single thread or cord
US3540204A (en) * 1967-04-18 1970-11-17 Toray Industries Method for manufacturing an improved elastic yarn covered with multifilament
NL7017486A (de) * 1969-12-15 1971-06-17
DE2207614B2 (de) * 1970-05-18 1975-06-05 Toray Industries, Inc., Tokio Falschzwirnmaschine
US3775961A (en) * 1971-11-22 1973-12-04 Phillips Fibers Corp Yarn process
US3983687A (en) * 1972-04-10 1976-10-05 Courtaulds Limited Method of producing covered elastic yarn
FR2184230A5 (en) * 1972-05-12 1973-12-21 Payen Pierre Gimping elastic core yarn - by withdrawing core yarn from stationary package and winding cover yarn around it
GB1441923A (en) * 1972-08-15 1976-07-07 Ici Ltd Variable knop yarns and methods for their manufacture
US3844103A (en) * 1973-05-29 1974-10-29 Teijin Ltd Process for production of composite bulk yarn
US4215529A (en) * 1978-10-23 1980-08-05 Norfin, Inc. Cable winding apparatus
US4334401A (en) * 1979-05-03 1982-06-15 Courtaulds Limited Process for making textured yarn
FR2561676B1 (fr) * 1984-03-22 1986-08-14 Pierre Payen Procede perfectionne de guipage d'un fil elasthane

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Eléments de la technique relevés: néant. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059166B4 (de) * 2000-11-29 2004-01-15 BSH Bosch und Siemens Hausgeräte GmbH Backofentür

Also Published As

Publication number Publication date
JPH0359133A (ja) 1991-03-14
DE69000025D1 (de) 1992-04-02
CA2019640A1 (fr) 1991-01-21
FR2649999B1 (fr) 1991-09-20
CA2019640C (fr) 2000-06-13
EP0409752B1 (de) 1992-02-26
JP2818267B2 (ja) 1998-10-30
FR2649999A1 (fr) 1991-01-25
ATE72843T1 (de) 1992-03-15
US5154044A (en) 1992-10-13
ES2029931T3 (es) 1992-10-01

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