EP3564421A1 - Procédé et dispositif destinés au traitement des fibres - Google Patents

Procédé et dispositif destinés au traitement des fibres Download PDF

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Publication number
EP3564421A1
EP3564421A1 EP18170364.6A EP18170364A EP3564421A1 EP 3564421 A1 EP3564421 A1 EP 3564421A1 EP 18170364 A EP18170364 A EP 18170364A EP 3564421 A1 EP3564421 A1 EP 3564421A1
Authority
EP
European Patent Office
Prior art keywords
fluid flow
fluidic oscillator
oscillating
fluid
main
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Withdrawn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
EP18170364.6A
Other languages
German (de)
English (en)
Inventor
Andrin Landolt
Benjamin REMBOLD
Roman Haefeli
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.)
Heberlein AG
Original Assignee
Heberlein 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 Heberlein AG filed Critical Heberlein AG
Priority to EP18170364.6A priority Critical patent/EP3564421A1/fr
Priority to EP19716927.9A priority patent/EP3788193A1/fr
Priority to CN201980029062.6A priority patent/CN112055765A/zh
Priority to PCT/EP2019/059736 priority patent/WO2019211092A1/fr
Priority to TW108114125A priority patent/TWI827596B/zh
Publication of EP3564421A1 publication Critical patent/EP3564421A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/161—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets

Definitions

  • the present invention relates to an apparatus and a method for treating threads comprising at least one nozzle and at least one fluidic oscillator.
  • Nozzles for texturing or swirling threads are used primarily in textile production in the production of various types of yarn.
  • air swirl nozzles are used in the production of knot yarn.
  • texturing a smooth yarn thread is given a crimp structure. This increases the volume and the moisture absorption, improves the moisture transport and increases the wearing comfort.
  • swirling the individual filaments of a multifilament yarn are mechanically connected to each other. This increases the compactness of the yarn and allows an increased processing speed.
  • the yarn is processed with a fluid stream, preferably with an air stream.
  • Such nozzles are made, for example WO 2010/086258 known.
  • Such fluid streams can oscillate on the yarn.
  • the oscillation of the fluid flow may be as in the EP 2 655 710 B1 be mechanically controlled.
  • By turning a rotor, nozzle bores and chamber openings are superimposed at different points, so that a compressed air pulse can act on the thread.
  • This construction is more susceptible to wear due to its mechanical construction and thus requires appropriate maintenance time and maintenance.
  • a device which consists of a fluid oscillator, an amplifier and three swirl nozzles.
  • a secondary fluid flow is oscillated by the fluidic oscillator through which Amplifier accelerates and alternately introduced into auxiliary nozzles, while the main fluid flow constantly flows into the main nozzle. Accordingly, this construction consumes a lot of energy, since three fluid streams act on the thread.
  • DE 28 13 368 describes a method for interweaving a multi-filament yarn in which a constant main fluid stream and two oscillating tributary fluid streams fluidize the yarn in the yarn channel. Same as at DE 28 23 335 here the energy consumption is high.
  • US 3 636 601 shows a nozzle, which oscillates a main fluid flow by means of an oscillator loop and based on the Coanda effect. A similar principle with only one oscillating loop is used in US 3,016,066 described. In US 3 638 291 the fluid flow is oscillated by the geometric shape of the yarn channel and the thread is swirled.
  • An apparatus for treating threads, in particular for swirling threads, comprises at least one nozzle with a yarn channel and a knitting area in the yarn channel as well as at least one fluidic oscillator for generating an oscillating fluid flow.
  • a fluidic oscillator is an oscillator which oscillates a fluid flow, usually an air flow.
  • the oscillation of the fluid flow can be controlled inter alia by the geometric shape of the oscillator, by time-controlled elements or mechanical components. But there are also other controls or combinations thereof possible.
  • the oscillation of the fluid flow can take place by means of feedback or via externally controlled components. In the case of the externally controlled variant, the oscillating loops are missing. In the case of oscillation by means of feedback, the fluid flow is oscillated with the aid of the oscillating loops.
  • the fluidic oscillator has at least two oscillating loops and two outputs if the oscillator is controlled by the feedback.
  • the fluidic oscillator can also oscillate the fluid flow by means of external excitation.
  • An external excitation is here understood that the geometry of the path for the fluid is not changed between the input and the outputs and in particular no valve parts are present. Rather, the excitation leads to a change in the fluid flow between the outputs, in a channel not changed in terms of shape and structure. At the excitation sites, it can lead to temporary channel changes, but during the fluid flow, the channel geometry remains unchanged.
  • Both outputs are connected to one or more fluid supply openings of the nozzle, which open into the effective range of the yarn channel.
  • the fluidic oscillator generates an oscillating fluid flow which oscillates between the outputs. In the ideal case, the fluid flow oscillates completely between the outputs. By complete is here meant that at the minimum and maximum of the amplitude of the entire fluid flow through one of the two outputs flows into the nozzle.
  • the fluid flow is introduced via a fluid supply opening of the nozzle.
  • the fluid supply opening opens in a known manner in an effective range of a yarn channel of the nozzle and acts there as the main fluid flow.
  • a main fluid stream is a fluid stream which contributes more than 50% and optimally more than 70% of the total amount of fluid that acts on the thread.
  • a yarn passed through the yarn passage is treated in a known manner.
  • the oscillation of the main airflow allows e.g. a constant node regularity, since a constant frequency is specified by the fluidic oscillator. Since the fluidic oscillator has no fluid loss and no manual control and the fluid flow divides into two yarn channels, it has a lower specific energy consumption than comparable constructions in the prior art.
  • the lack of moving parts or controls also reduces the maintenance and wear of parts and elements.
  • the inventive fluidic oscillator is preferably designed such that the oscillation between the outputs is pulse-controlled. This means that the feedback and switching between the two outputs by the transmission of a pressure pulse with speed of sound via the Oszarrichlaufe takes place.
  • the fluidic oscillator could also be volume controlled. In this case, the feedback volume of the fluid flow accumulates in the oscillating loop until it is large enough to divert the fluid flow.
  • the device preferably has a fluid oscillator with a separator for dividing a supplied fluid flow into two main lines.
  • This separator has an end face, which is preferably concave-shaped and points in the direction of a fluid supply.
  • the concave shape of the separator allows a fast and reliable switching of the currents from one main line to the other main line.
  • each oscillating loop between the separator and the outlet at a branch branches off laterally from the main line and opens into an inlet space arranged upstream relative to the branch.
  • the oscillator loop branches off at an angle laterally from the main line.
  • This angle defined as the angle between the downstream part of the main line and the oscillating loop, is preferably blunt and influences the stability of the oscillation and thus the regularity of the knots in the yarn.
  • the main line preferably has an edge immediately after the branching.
  • the oscillating loop preferably opens in the direction of flow in front of the separator, in particular at right angles, into the inlet space.
  • the Oszilliersch secured preferably have a smaller cross-sectional area compared to the main lines.
  • the cross-sectional area of the oscillating loop is 50-75%, and more preferably 60-66%, as compared with the cross-sectional area of the main line.
  • the oscillating loops have it a preferred cross-sectional area of 2 - 100 mm 2 and more preferably a cross-sectional area of 5 - 50 mm 2 .
  • the oscillating loops are preferably adjustable in length. This could be done via telescopically extendable elements in the oscillating loop. It is also possible that oscillating loops of a certain length can be exchanged and replaced by those of a different length. A possible variant for this would be the installation of hoses. These hoses could be mounted via a releasable connection to coupling elements, which are located at the branches of the main line and the junctions in the inlet space.
  • An advantage of this adjustable oscillating loop length is that it allows the oscillation frequency of a pulse-controlled fluidic oscillator to be influenced.
  • the oscillation is preferably generated pneumatically (pulse-controlled or volume-controlled) at an intersection of the entry space and the oscillating loops, as stated above.
  • the oscillation can also be triggered externally electrically, mechanically or pneumatically.
  • a combination of the described or that further upstream fluidic oscillators, instead of the oscillator loops trigger the oscillation is also conceivable.
  • further fluid oscillators are coupled to each of the oscillating loops in order to trigger the oscillation. It is also possible to additionally pressurize the nozzle with constant or oscillating secondary fluid streams.
  • Finefluidströme fluid flows are defined, which contribute less than 50% and optimally less than 30% to the total amount of fluid, which acts on the thread.
  • an embodiment of the fluid oscillator according to the invention typically enables an oscillation of the fluid flow in a frequency range of 50-5000 Hz.
  • the device preferably has a cross-sectional constriction between the branch of the oscillating loop and the effective area of the nozzle. This cross-sectional constriction supports the feedback via the oscillating loop.
  • the cross-sectional constriction is preferably located at the outlet of the fluidic oscillator.
  • the output of the fluidic oscillator is connected via a connecting line to the fluid supply opening of the nozzle.
  • the connecting line is preferably designed so that a symmetrical flow profile of the flow is formed. An asymmetrical profile would lead to irregular and unstable knots in the yarn and thus to a lower quality yarn.
  • the main line and / or the Oszarrichlaufe of the fluidic oscillator preferably have a rectangular cross-sectional profile. But it would also be possible that the main line and / or the Oszarrichlaufe of the fluidic oscillator have a round, oval or polygonal profile. A rectangular profile is easier to produce.
  • the fluidic oscillator is preferably made of a metallic or plastic-based material.
  • the nozzle is preferably made of a ceramic material.
  • the yarn duct of the nozzle typically has a yarn channel cross-sectional area of 0.5-75.0 mm 2 , preferably a yarn channel cross-sectional area of 1.0-50.0 mm 2, and particularly preferably a yarn channel cross-sectional area of 2.0-40.0 mm 2 .
  • the connecting line is preferably made of a metal or Kunsstoff and / or preferably has a cross-sectional area of 0.5-30.0 mm 2 , preferably a cross-sectional area of 0.9-25.0 mm 2, and more preferably a cross-sectional area of 1.0-20.0 mm 2 .
  • the device may include various types and arrangements of nozzles.
  • a first embodiment according to the invention has two nozzles, each with a fluid supply opening and an effective area, which are each fed by a connecting line of the fluidic oscillator.
  • the nozzle has two fluid supply openings, which are connected via connecting lines to the outputs of the fluidic oscillator.
  • the fluid supply openings lead in the longitudinal direction offset in the effective range of the yarn channel of the nozzle.
  • a fluid supply opening is connected to the outputs of the fluidic oscillator via two connecting lines opening into the opening at different angles.
  • fluid supply openings are fed from both sides of the Garnkanalachse in the effective range from the fluidic oscillator.
  • a fifth embodiment of the device comprises two nozzles and two fluidic oscillators.
  • one output of each fluid oscillator is connected via a connecting line to a respective fluid supply opening of the nozzles.
  • the two fluidic oscillators are coupled together by means of a synchronization line in order to guarantee a synchronization of the oscillation.
  • the inlet space is preferably formed such that the fluid flow supplied through a fluid supply line is accelerated to the speed of sound and above, upon entry into the fluidic oscillator.
  • the first fluidic oscillator can be connected to a second fluidic oscillator.
  • the first fluidic oscillator has no Oszarrich awarded and the second fluidic oscillator has two outputs which are connected to the inlet space of the first fluidic oscillator.
  • the fluidic oscillator has no oscillating loops. Instead, the oscillation of the main fluid flow is controlled by means of external excitation, in particular with pneumatic, electrical, mechanical or other excitations.
  • a thread is passed through at least one effective region of a yarn channel of at least one nozzle.
  • an oscillating fluid flow is generated by a fluid oscillator with two oscillating loops and brought via connecting lines to the fluid supply openings of the nozzle.
  • the fluid flow is introduced as the main fluid flow into the effective region of the nozzle.
  • a number of knots of 15-40 / m is achieved at a yarn speed of 5 km / min.
  • This constant Fluid flow is generated by the fluid supply and oscillated in the fluidic oscillator before being directed to the nozzle.
  • the constant fluid flow allows a high stability of the oscillation in the fluidic oscillator.
  • a fluid flow of 1 - 100 Nm 3 / h (standard cubic meters per hour) is brought from the fluid supply in the fluidic oscillator and is oscillated there in a frequency range of 5 - 5000 Hz.
  • the oscillating fluid flow is preferably accelerated by a cross-sectional constriction to supersonic speed before it enters the effective range.
  • a further device for treating threads, in particular for twisting threads, comprises two nozzles and a fluid oscillator with an oscillating loop and two outlets, between which the main fluid flow oscillates.
  • the outputs are connected to a respective fluid supply opening of a nozzle, so that the main fluid flow oscillates between the two nozzles.
  • FIG. 1 shows a device 1 comprising a fluid supply 10 which generates a fluid flow Fs.
  • the fluid flow Fs is oscillated by a fluidic oscillator 2 to a main oscillating fluid flow HFs.
  • the main fluid flow HFs is introduced into a nozzle 40 and 40 '.
  • FIG. 2 shows an embodiment of the nozzle 40.
  • the fluid flow Fs is passed via a cross-sectional constriction 44 through a fluid feed opening 41 in an operative region 42 of a yarn channel 43 to treat the yarn F.
  • FIG. 3 shows a longitudinal section through the fluidic oscillator 2.
  • the fluid is brought from the fluid supply 10 via the fluid supply line 11 to an inlet space 20 of the fluidic oscillator 2.
  • the fluid forms a fluid flow Fs, which is alternately deflected to the left or right at a separator 21.
  • the fluid flow Fs is deflected to the left on the separator 21 and enters a main line 26.
  • the fluid flow Fs is divided by an edge 25 again.
  • a part is deflected into an oscillating loop 23. The other part remains in the main line 26 and flows in the direction of an output 24.
  • a pressure pulse is transmitted to the inlet space 20, in order to redirect the fluid flow Fs in the other direction at the point of intersection 12 and thus initiate a new oscillation.
  • the fluid flow Fs remaining in the main conduits 26 and 26 ' is accelerated to supersonic through a cross-sectional constriction 44 between the branch 22 and the effective area 42 prior to entering the effective area.
  • the fluidic oscillator 2 preferably has two extendable elements 29 and 29 'on the oscillating loops 23 and 23'.
  • FIG. 4 shows an enlarged view of the separator 21 of the fluidic oscillator 2.
  • the separator 21 separates the two main lines 26 and 26 'and has an end face 28 which faces the inlet region 20.
  • the end face 28 is preferably concave.
  • FIG. 5 shows an enlarged view of the edge 25 at the junction 22 of the Oszarrichlaufe 23.
  • the Oszarrichlaufe branches at an angle ⁇ from the main line.
  • the fluid flow Fs comes from the inlet space 20 through the main line 26 to the branch 22.
  • the edge 25 of the main line 26 causes the fluid flow Fs is divided between the Oszarrichlaufe 23 and the main line 26. From there flows the fluid flow Fs either over the Oszarrichlaufe 23 back to the entry space 20 or via the main line 26 to the output 24th
  • FIG. 6 shows a profile of the oscillating loops 23 and 23 'and the main lines 26 and 26'.
  • the cross-sectional profiles of the lines are rectangular.
  • Figure 7a shows an alternative embodiment of the nozzle 40 in longitudinal section in the thread axis F.
  • the nozzle 40 has two fluid supply openings 41 and 41 ', which in the thread axis F to each other offset in the yarn channel 43 are attached.
  • the fluid flow Fs is introduced through the fluid supply port 41 and 41 'into the effective regions 42 and 42'. In the effective areas 42 and 42 'of the yarn channel 43, the thread is swirled.
  • FIG. 7b shows a further arrangement of a nozzle 40 in cross section.
  • the fluid flow Fs is introduced from the connection lines 30 and 30 'through the fluid supply opening 41 and 41' into the effective region 42 of the yarn channel 43.
  • the thread is swirled.
  • the fluid supply openings 41 and 41 ' are located on the same side of the yarn channel 43 but open at the same point in the effective region 42 but from different directions.
  • FIG. 7c shows a variant of the nozzle 40 in cross section.
  • the main fluid flow HFs via two connecting lines 30 and 30 'through the opposing fluid supply openings 41 and 41' in the active region 42 is introduced.
  • FIG. 7d shows a variant of the device 1 with two nozzles 40 and 40 'and two fluidic oscillators 2 and 2'.
  • a fluid supply 10 generates a fluid flow Fs which is oscillated in the fluidic oscillators 2 and 2 '.
  • two main fluid flows HFs are generated, which are respectively led to each of the two nozzles 40 and 40'.
  • the fluidic oscillators are connected to each other by a synchronization line 27.
  • FIG. 8a shows a second fluidic oscillator 3 which is connected to the first fluidic oscillator 2.
  • the second fluidic oscillator 3 has outputs 51, 51 'which open into the inlet space 20 of the first fluidic oscillator 2.
  • the pneumatic impulses off the outputs 51,51 ' divert the main fluid flow Fs in the inlet space 20.
  • FIG. 8b shows a further embodiment of the fluidic oscillator 2.
  • This fluidic oscillator 2 has no oscillating loops, so that the oscillation is controlled by external excitation 50.
  • These external excitation 50 are in the concrete embodiment, a piezoelectric element 60th
  • FIG. 8c shows a further embodiment of the fluidic oscillator 2 which oscillates the main fluid flow Fs between two nozzles.
  • This fluidic oscillator 2 has an oscillating loop 23.
  • the pneumatic pulses from the oscillating loop 23 deflect the main fluid flow Fs in the inlet space 20.
  • the main fluid flow thus oscillates between the outputs 51, 51 '.
  • the fluidic oscillator is connected via each of the outputs 51, 51 'to a fluid supply port 41, 41' of a nozzle 40, 40 ', so that the main fluid flow Fs oscillates between the two nozzles 40, 40'.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP18170364.6A 2018-05-02 2018-05-02 Procédé et dispositif destinés au traitement des fibres Withdrawn EP3564421A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP18170364.6A EP3564421A1 (fr) 2018-05-02 2018-05-02 Procédé et dispositif destinés au traitement des fibres
EP19716927.9A EP3788193A1 (fr) 2018-05-02 2019-04-16 Dispositif et procédé de traitement de fils
CN201980029062.6A CN112055765A (zh) 2018-05-02 2019-04-16 用于纱线处理的装置和方法
PCT/EP2019/059736 WO2019211092A1 (fr) 2018-05-02 2019-04-16 Dispositif et procédé de traitement de fils
TW108114125A TWI827596B (zh) 2018-05-02 2019-04-23 用以處理絲線之裝置及方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18170364.6A EP3564421A1 (fr) 2018-05-02 2018-05-02 Procédé et dispositif destinés au traitement des fibres

Publications (1)

Publication Number Publication Date
EP3564421A1 true EP3564421A1 (fr) 2019-11-06

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Application Number Title Priority Date Filing Date
EP18170364.6A Withdrawn EP3564421A1 (fr) 2018-05-02 2018-05-02 Procédé et dispositif destinés au traitement des fibres
EP19716927.9A Pending EP3788193A1 (fr) 2018-05-02 2019-04-16 Dispositif et procédé de traitement de fils

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19716927.9A Pending EP3788193A1 (fr) 2018-05-02 2019-04-16 Dispositif et procédé de traitement de fils

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EP (2) EP3564421A1 (fr)
CN (1) CN112055765A (fr)
TW (1) TWI827596B (fr)
WO (1) WO2019211092A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114016176B (zh) * 2021-12-02 2022-09-16 南通新源特种纤维有限公司 离合器面片用膨化复合线及其制备方法、加工设备
DE102022204734B4 (de) 2022-05-13 2024-02-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Hydraulischer Schalter und Bohrhammer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016066A (en) 1960-01-22 1962-01-09 Raymond W Warren Fluid oscillator
US3158166A (en) * 1962-08-07 1964-11-24 Raymond W Warren Negative feedback oscillator
US3247861A (en) * 1963-11-20 1966-04-26 Sperry Rand Corp Fluid device
US3636601A (en) 1969-06-23 1972-01-25 Monsanto Co Regularly tangled compact yarn process
US3638291A (en) 1970-10-01 1972-02-01 Du Pont Yarn-treating jet
DE2813368A1 (de) 1977-03-30 1978-10-05 Toray Industries Verfahren und vorrichtung zur verflechtung eines mehrfadengarns
DE2823335A1 (de) 1978-05-29 1979-12-13 Norddeutsche Faserwerke Gmbh Verfahren und vorrichtung zum behandeln von faeden
WO2010086258A1 (fr) 2009-01-30 2010-08-05 Oerlikon Heberlein Temco Wattwil Ag Dispositif de texturation et procédé de texturation de fils continus
EP2655710B1 (fr) 2010-12-22 2014-12-03 Oerlikon Textile GmbH & Co. KG Dispositif pour générer des noeuds d'entrecroisement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005505A (en) * 1975-05-27 1977-02-01 Owens-Corning Fiberglas Corporation Method of producing a sliver-like fibrous element
DE102011015689A1 (de) * 2011-03-31 2012-10-04 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum Erzeugen von Verwirbelungen an einem multifilen Faden

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016066A (en) 1960-01-22 1962-01-09 Raymond W Warren Fluid oscillator
US3158166A (en) * 1962-08-07 1964-11-24 Raymond W Warren Negative feedback oscillator
US3247861A (en) * 1963-11-20 1966-04-26 Sperry Rand Corp Fluid device
US3636601A (en) 1969-06-23 1972-01-25 Monsanto Co Regularly tangled compact yarn process
US3638291A (en) 1970-10-01 1972-02-01 Du Pont Yarn-treating jet
DE2813368A1 (de) 1977-03-30 1978-10-05 Toray Industries Verfahren und vorrichtung zur verflechtung eines mehrfadengarns
DE2823335A1 (de) 1978-05-29 1979-12-13 Norddeutsche Faserwerke Gmbh Verfahren und vorrichtung zum behandeln von faeden
WO2010086258A1 (fr) 2009-01-30 2010-08-05 Oerlikon Heberlein Temco Wattwil Ag Dispositif de texturation et procédé de texturation de fils continus
EP2655710B1 (fr) 2010-12-22 2014-12-03 Oerlikon Textile GmbH & Co. KG Dispositif pour générer des noeuds d'entrecroisement

Also Published As

Publication number Publication date
TWI827596B (zh) 2024-01-01
EP3788193A1 (fr) 2021-03-10
WO2019211092A1 (fr) 2019-11-07
CN112055765A (zh) 2020-12-08
TW201947071A (zh) 2019-12-16

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