EP1918432A1 - Verfahren zur Behandlung von Garnen durch Knit-Deknit-Strukturierung - Google Patents

Verfahren zur Behandlung von Garnen durch Knit-Deknit-Strukturierung Download PDF

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Publication number
EP1918432A1
EP1918432A1 EP07360049A EP07360049A EP1918432A1 EP 1918432 A1 EP1918432 A1 EP 1918432A1 EP 07360049 A EP07360049 A EP 07360049A EP 07360049 A EP07360049 A EP 07360049A EP 1918432 A1 EP1918432 A1 EP 1918432A1
Authority
EP
European Patent Office
Prior art keywords
knit
knitting
treatment
knitting machine
pulling
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
EP07360049A
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English (en)
French (fr)
Other versions
EP1918432B1 (de
Inventor
Philippe Massotte
Didier Thibault
Hubert Liebmann
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.)
Superba SAS
Original Assignee
Superba SAS
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Filing date
Publication date
Priority claimed from FR0654631A external-priority patent/FR2907798A1/fr
Application filed by Superba SAS filed Critical Superba SAS
Publication of EP1918432A1 publication Critical patent/EP1918432A1/de
Application granted granted Critical
Publication of EP1918432B1 publication Critical patent/EP1918432B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D02G1/002—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by knitting, weaving or tufting, fixing and then unravelling
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B19/00—Unravelling knitted fabrics

Definitions

  • the present invention relates to the field of the textile industry, in particular the treatment of yarns, in particular texturing by knitting - unraveling and relates to a method of processing yarns by knitting - unraveling.
  • the subject of the invention is also a son treatment line for carrying out the process
  • the process of knitting - unraveling is known per se and is intended for producing textured yarns available on bobbins or on beams for later use.
  • This method has the disadvantage of making a multi-wire mesh, that is to say having several son in a single mesh and a single row. Moreover, it also has the disadvantage of not allowing a knitting of large threads, because of the limitation imposed, on the one hand, by the diameter of the single wire guide and, on the other hand, by the dimensions of the needles. . Finally, the very fact of knitting a set of threads in the form of multi-threaded stitches entails a risk, during unraveling, of a difficulty in undoing the stitches by pulling on the threads, one or more threads which may offer more tensile strength. important during said unraveling, so that it can occur entanglement of the individual son causing their breakage.
  • US-A-6,321,427 discloses a method of knitting a single large yarn by means of a tubular knitting machine, wherein the yarn rotates above the needles of the knitting machine. In this process, the sock or knit obtained is stored in a pot and then undergoes treatment, then is unraveled.
  • the method according to this document has the disadvantage of treating only one wire at a time and being discontinuous, that is to say that it requires a recovery of the knitting for the unraveling.
  • the object of the present invention is to overcome the drawbacks of the methods known to date by proposing a method of treating yarns by knitting - unraveling, allowing a simultaneous treatment of several yarns without limitation due to their thickness and easy unraveling, without risk of entangling of drawn threads.
  • this process is characterized in that it consists in knitting several individual threads on a multi-knitting knitting machine, then in carrying out one or more thermal, chemical or other treatments, then performing a trimming with traction on the first knitted yarn and winding or individually kneading the unraveled son or to perform on these individual son another processing operation or a manufacturing operation, optionally with an intermediate accumulation of said son.
  • the subject of the invention is also a yarn processing line for carrying out this method, characterized in that it comprises a multi-feed knitting machine fed with yarns by means of coils, a garbage-cutting unit which feeds a machine. winder, possibly with the interposition of an accumulator, one or more heat treatment chambers, chemical or otherwise being provided between the knitting machine and the uncoupling unit.
  • FIGS. 1 and 6 of the accompanying drawings show schematically a son treatment line comprising a multichaut knitting machine 1 supplied with yarns 2 by means of coils 3, a disentanglement unit 4 which feeds a winder 5, possibly with the interposition of an accumulator 6, one or more enclosures 7, 7 'of heat treatment, chemical or other being provided between the knitting machine 1 and the uncoupling unit 4 ( Figure 1).
  • these son treatment lines implement a method which consists in knitting several individual threads 2 on the multi-knitting knitting machine 1, then in carrying out one or more heat, chemical or other treatments in one or more enclosures 7, 7 '. At the exit of the latter or of the latter is then carried out a trimming with traction on the first knitted yarn and the unraveled son are then wound on the winder 5, or individually coupled. It is also possible to perform on these unraveled son another processing operation or directly a manufacturing operation, after their intermediate accumulation.
  • each yarn 1 is guided in an individual yarn guide and is knitted individually with the other yarns on the multi-knitting knitting machine 1 to produce a multi-thread knit with superposed single-threaded stitches.
  • Such a multi-ply knit is shown in FIG. 2 of the accompanying drawings and shows monolayers superimposed in spirals, which are made in several rows of several stitches of individual threads 2.
  • the knit obtained is directly transported through the treatment chamber 7, then is unraveled for the individual winding of the son on the winder 5.
  • the device for supplying individual son is fixed and whose knitting needles are mounted on a rotating shaft, the knitting coming out of the knitting machine 1 is driven in a rotational movement tending to twist, so that the subsequent continuous treatment would not be possible.
  • the driving device 8 is in the form of two pairs of traction rollers 8 ', extending perpendicularly to the direction of progression and to the longitudinal axis of the knit coming out of the knitting machine multihutes 1 and mounted each in a bearing 9 rotating about the longitudinal axis of the knit, the bearing bearings 9 of the traction rollers 8 'being synchronized in rotation with each other and with the shaft of the knitting machine multichutes 1.
  • the knit obtained can advantageously be subjected to an accumulation before unraveling, in the treatment chamber 7, 7 '.
  • Such an accumulation is not shown in the embodiment according to FIGS. 1, 4 and 5, but can be achieved by means of an accumulation device comprising, for example, superposed grating belts for receiving and driving knitting at a variable linear velocity, but at most equal to the linear velocity of knitting, these mats being mounted on a common frame rotated about its longitudinal axis, in synchronism with the driving device 8 and disposed between the traction cylinders 8 'of said drive device 8, in the treatment chamber 7, 7'.
  • an accumulation device comprising, for example, superposed grating belts for receiving and driving knitting at a variable linear velocity, but at most equal to the linear velocity of knitting, these mats being mounted on a common frame rotated about its longitudinal axis, in synchronism with the driving device 8 and disposed between the traction cylinders 8 'of said drive device 8, in the treatment chamber 7, 7'.
  • said line extends horizontally and all the operations are carried out in a horizontal progression.
  • the knit driven by the traction cylinder 8 'of the driving device 8, at the output of the knitting machine multihutes 1, is then accumulated in the treatment chamber 7', by gravity .
  • the treatment line is disposed vertically and the treatment chamber 7 'is vertical and simultaneously forms a gravity fed means of gravity by the traction cylinder 8 'of the driving device 8, the uncoupling unit 4 being directly connected to the lower part of the treatment chamber 7'.
  • the trimmings by traction on the yarns are carried out directly on said yarns exactly in the same order of succession as that of the knitting, that is to say that the first knitted yarn becomes the first wire unraveled, so that, as shown in Figures 3, 5 and 6, the son 1 can be unraveled ideally without the risk that the wire of the lower layer passes under the wire of the upper layer and hampers the unraveling, the knitting being, moreover, continuously rotated in the direction indicated to maintain a parallel path of the son after the uncoupling.
  • the son 2 are wound individually on the winder 5 or undergo complementary treatment, chemical, thermal or other or enters a transformer station, possibly after passing through a battery 6 ( Figure 1 ).
  • the uncoupling unit 4 comprises a comb or a plate with holes 11 for individually guiding the wires and a means 12 for pulling the wires.
  • the unraveling son 2 can be performed virtually identical to their knitting.
  • the son 2 are wound on the winder 5 virtually without tension, the winder 5 being advantageously equipped, in a known manner, a voltage regulating means.
  • the disentanglement unit 4 advantageously has a means 12 for pulling the threads comprising a plurality of pairs of rollers 12 'for individually driving each thread 2, each pair of rollers 12' being regulated individually by means of an optical, mechanical or other detection device 13 controlling any variation in the tension of the wires 2.
  • a variation in the length of the wire between the means 12 and the inlet of the winder 5 will result in a slack or a more tension or less strong wire and the device 13 will automatically deliver a corresponding correction signal on the pair of rollers 12 'traction of this wire.
  • the uncoupling unit 4 may be constituted by means 14 for pulling and reshaping the knit according to its section initial approximation and by individual eyelets disentangling 15 arranged upstream of the means 12 for pulling the son.
  • Such means 14 is intended to directly take up the knit at the outlet of the treatment chamber 7, 7 ', without the interposition of a traction cylinder 8' of the driving device 8.
  • the means 14 for pulling and reshaping the knit according to its approximate initial section is constituted by an even number of trainers 14 'in the form of conical screws, arranged in the form of a truncated cone on a rotary support 14 "and half driven by a differential drive 16 ( Figures 8 and 9).
  • the conical screws forming the drivers 14 ' have a lower zone, close to the rotatable support 14 ", smooth and are alternately provided with a step to the right and a step to the left, two screws with opposite steps being interconnected by a pair of gears 17 and one of the screws forming a driver 14 'of a pair of drivers 14' being in drive relation with a drive gear 18 of the differential drive 16, via 19.
  • the pairwise drive of the conical screw-shaped drivers 14 makes it possible to ensure that the knit which is picked up by the means 14 is well driven toward the end of the latter and towards the individual uncoupling eyelets 15 and their smooth lower zone avoids any risk of unraveling and promotes unraveling.
  • This means 14 is shown in combination with a vertical processing chamber 7 'of a vertical processing line provided with gravity accumulation means. However, it is also possible to use this means 14 with a horizontal treatment line, such as that according to FIG. 1, with a treatment chamber 7.
  • Such an embodiment of the means 14 for pulling and reshaping the knit according to its approximate initial section makes it possible, on the one hand, to facilitate the recovery of the knitted fabric at the outlet of the enclosure 7 and, on the other hand, an expansion of the the latter to a section close to that of knitting, so that the unraveling is facilitated.
  • the means 14 for pulling and reshaping the knit according to its approximate initial section is rotated at the knitting rotation speed, in synchronism with the multi-knitting machine 1, by means of a pinion (not shown ) rotatably connected to the rotary support 14 "and the coaches 14 'in the form of conical screws mesh with the drive pinion 18 of the differential drive 16.
  • the driving of the drive pinion 18 at a speed different from that of driving the rotary support 14 "makes it possible to influence the rotational speed of the coaches 14 'and thus, by increasing or decreasing it, to pull more or less rapidly the end of the knit to be unraveled towards the support 14 "and therefore to position the latter in relation to the uncontrolling eyelets 15.
  • the means 14 may be provided with at least one position sensor of the end of the knitting fabric being unraveled, as well as decelerating position sensors, which are respectively connected to an electronic means for controlling the differential drive 16 and the means 12 for pulling the wires.
  • These sensors are intended, respectively, the first to detect an optimal position of the end of the knitting in the process of unraveling, and the others, to detect an optimal position of each wire to unravel with respect to the corresponding wringing eyelet 15.
  • the operation of such position sensors and the electronic control circuits to which they are connected is known to those skilled in the art and does not require a complementary description.
  • the position sensors may, preferably, be of the zone detection type, making it possible to detect the end of the knifing knit or a thread being unraveled, for example by checking a positioning at a predetermined location of the zone and provide signals for acceleration or deceleration of the rotational speed of the differential drive 16 and / or pairs of rollers 12 'for individual drive of each wire 2 of the means 12 for pulling the wires.
  • the son processing method may also be interrupted by providing for an intermediate storage step.
  • the process is carried out by means of a stationary knitting machine, in which the yarns are individually rotated above the machine by rotation of the bobbins with their support, and then the knit made by the fixed machine. is driven at the exit of the latter by guide cylinders and transported in one or more heat treatment chambers, chemical or other, the knit being deposited at the outlet of this or these speakers in a pot or on a coil and cut after filling the pot or spool, then stored.
  • the knit is taken up in the pot or on the spool for unraveling from the last knitted yarn, the pot being rotatably mounted on a support about its vertical axis or the spool being mounted on a spool support rotating around an axis perpendicular to the axis of the coil, the unraveled son being then wound or coupled or subjected to another treatment operation or transformation.
  • This unraveling can, of course, be performed by means of a unit comparable to the unraveling unit 4 described above.
  • the knit can be treated in a closed enclosure, for example for heat-setting under pressure.
  • the invention it is possible to perform a texturing of a large number of threads by knitting - unraveling and heat, chemical or other treatments of these son. This texturing being performed continuously or almost continuously, the invention allows a very strong increase in production while ensuring operational safety, particularly during the operation of unraveling.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Knitting Machines (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Knitting Of Fabric (AREA)
  • Treatment Of Fiber Materials (AREA)
EP07360049A 2006-10-30 2007-10-09 Verfahren zur Behandlung von Garnen durch Knit-Deknit-Strukturierung Not-in-force EP1918432B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0654631A FR2907798A1 (fr) 2006-10-30 2006-10-30 Procede de traitement de fils par tricotage-detricotage
FR0705136A FR2907799B1 (fr) 2006-10-30 2007-07-16 Procede de traitement de fils par tricotage-detricotage

Publications (2)

Publication Number Publication Date
EP1918432A1 true EP1918432A1 (de) 2008-05-07
EP1918432B1 EP1918432B1 (de) 2010-01-13

Family

ID=38819292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07360049A Not-in-force EP1918432B1 (de) 2006-10-30 2007-10-09 Verfahren zur Behandlung von Garnen durch Knit-Deknit-Strukturierung

Country Status (9)

Country Link
US (1) US7814627B2 (de)
EP (1) EP1918432B1 (de)
JP (1) JP5264144B2 (de)
AT (1) ATE455195T1 (de)
BR (1) BRPI0705946A (de)
CA (1) CA2606862A1 (de)
DE (1) DE602007004277D1 (de)
ES (1) ES2339496T3 (de)
FR (1) FR2907799B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900005898A1 (it) 2019-04-16 2020-10-16 St Don Bosco Dispositivo e metodo per la pulizia di tessuti, in particolare indumenti, in condizioni estreme

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE539759C2 (en) * 2016-05-17 2017-11-21 Inventech Europe Ab A system for in-line treatment of thread

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3330018A (en) * 1965-02-11 1967-07-11 Duplan Corp Method of making crimped yarn
US3466718A (en) * 1967-06-16 1969-09-16 Thomas E Adamson Methods for producing textured fabric material
GB1240738A (en) * 1968-10-11 1971-07-28 Bayer Ag A process and an apparatus for making up stretched continuous filaments
US3720984A (en) * 1971-01-06 1973-03-20 Du Pont Multi-end knit-deknit process
FR2430997A1 (fr) * 1978-07-10 1980-02-08 Rhone Poulenc Textile Dispositif pour le detricotage d'un tricot tubulaire
GB2247473A (en) * 1990-07-31 1992-03-04 Daisuzu Kogyo Co Ltd Unravelling fabric
US6321427B1 (en) * 1999-09-09 2001-11-27 Polyloom Corporation Of America Knit-deknit yarn and method and apparatus for making same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US772458A (en) * 1901-02-16 1904-10-18 Henry Curtis Machine for unraveling knitted fabric.
US1176776A (en) * 1912-04-13 1916-03-28 Max Arthur Mueller Machine for unraveling and winding yarn.
US1399657A (en) * 1919-09-15 1921-12-06 Michael F Robischon Machine for unraveling knitted goods and winding the yarn
US2061233A (en) * 1934-03-26 1936-11-17 Textile Machine Works Method of reclaiming yarn from multiyarn knitted fabric
GB1213151A (en) * 1967-01-28 1970-11-18 Klinger Mfg Co Ltd Crimping yarn
US3579764A (en) * 1969-02-26 1971-05-25 Indian Head Inc Process for producing textured yarns
JPS4926551A (de) * 1972-07-06 1974-03-09
JPS523018B2 (de) * 1973-02-16 1977-01-25
US3919749A (en) * 1973-04-09 1975-11-18 Pharr Yarns Inc Method for producing space-dyed textured yarn
JPS5926692B2 (ja) * 1980-06-17 1984-06-29 モス トレバ− アドリアン ニツト生地をほどくための機械
US4870839A (en) * 1987-12-22 1989-10-03 Asheboro Elastics, Corp. Apparatus for deknitting elastic yarns
TR199900813A2 (xx) * 1999-04-14 2000-11-21 A�R�Kl� Mehmet �rg� s�kme y�ntemi ve makinas�

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3330018A (en) * 1965-02-11 1967-07-11 Duplan Corp Method of making crimped yarn
US3466718A (en) * 1967-06-16 1969-09-16 Thomas E Adamson Methods for producing textured fabric material
GB1240738A (en) * 1968-10-11 1971-07-28 Bayer Ag A process and an apparatus for making up stretched continuous filaments
US3720984A (en) * 1971-01-06 1973-03-20 Du Pont Multi-end knit-deknit process
FR2430997A1 (fr) * 1978-07-10 1980-02-08 Rhone Poulenc Textile Dispositif pour le detricotage d'un tricot tubulaire
GB2247473A (en) * 1990-07-31 1992-03-04 Daisuzu Kogyo Co Ltd Unravelling fabric
US6321427B1 (en) * 1999-09-09 2001-11-27 Polyloom Corporation Of America Knit-deknit yarn and method and apparatus for making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900005898A1 (it) 2019-04-16 2020-10-16 St Don Bosco Dispositivo e metodo per la pulizia di tessuti, in particolare indumenti, in condizioni estreme

Also Published As

Publication number Publication date
ES2339496T3 (es) 2010-05-20
FR2907799A1 (fr) 2008-05-02
EP1918432B1 (de) 2010-01-13
US20080098581A1 (en) 2008-05-01
JP5264144B2 (ja) 2013-08-14
BRPI0705946A (pt) 2008-10-14
JP2008115520A (ja) 2008-05-22
CA2606862A1 (fr) 2008-04-30
US7814627B2 (en) 2010-10-19
DE602007004277D1 (de) 2010-03-04
ATE455195T1 (de) 2010-01-15
FR2907799B1 (fr) 2009-01-23

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