EP2203578B1 - Verfahren und vorrichtung zur herstellung eines mehrfarbigen verbundfadens - Google Patents

Verfahren und vorrichtung zur herstellung eines mehrfarbigen verbundfadens Download PDF

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Publication number
EP2203578B1
EP2203578B1 EP08841741A EP08841741A EP2203578B1 EP 2203578 B1 EP2203578 B1 EP 2203578B1 EP 08841741 A EP08841741 A EP 08841741A EP 08841741 A EP08841741 A EP 08841741A EP 2203578 B1 EP2203578 B1 EP 2203578B1
Authority
EP
European Patent Office
Prior art keywords
polymer melts
filament bundles
composite thread
composite
colored
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.)
Not-in-force
Application number
EP08841741A
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German (de)
English (en)
French (fr)
Other versions
EP2203578A1 (de
Inventor
Stefan Kalies
Friedrich Lennemann
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Oerlikon Textile 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
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Publication of EP2203578A1 publication Critical patent/EP2203578A1/de
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Publication of EP2203578B1 publication Critical patent/EP2203578B1/de
Not-in-force legal-status Critical Current
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]

Definitions

  • the invention relates to a method for producing a multi-colored composite thread according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 8.
  • a generic method and a generic device are from the EP 1 035 238 A1 or EP 0924 321 A1 known.
  • the known method and the known device for producing a multi-colored composite yarn initially several colored polymer melts are produced in parallel side by side and extruded through a plurality of separate spinnerets to each a colored filament bundle.
  • the filament bundles consist of a plurality of individual filament strands, which are extruded through the nozzle openings of a spinneret to endless strands. After several treatment steps by cooling and stretching the colored filament bundles are combined to form a composite thread.
  • the composite yarn thus receives a mixed color, which arises from the merger of the colored filaments of the individual filament bundles.
  • Such multicolor composite yarns are used in particular in the production of BCF yarns, in which in particular the mixed color of the composite yarn determines the visual appearance of the carpet.
  • the mixed color of the composite yarn determines the visual appearance of the carpet.
  • different color patterns result in the carpet fabric. Therefore, in practice, there is a desire to combine the colored filament bundles as flexibly as possible to a desired mixed color of the composite thread.
  • the number of filament bundles which are combined to form a composite thread can be changed for this purpose.
  • two- or three-color filament bundles can be combined to form a composite thread, each having a mixed color.
  • the filament bundles are constantly changed in their relative position to each other, so as to obtain again before entering a texturing a mixing of the filaments into a composite thread. For this purpose, some of the filament bundles are moved back and forth with small strokes.
  • a further object of the invention is to provide a method and an apparatus for producing a multi-colored composite yarn in which the composite yarn can be produced with predetermined color effects in the mixed color.
  • the invention has the particular advantage that no additional intervention for mixing the filaments of the colored filament bundles is required to the To change the mixed color of the composite thread.
  • To change or adjust the mixed color of the composite thread the production of the colored polymer melts during the extrusion of the filament bundles is changed according to the invention. It is thus possible to influence the extrusion of the filament bundles in such a way that the filaments forming the filament bundle are already produced in a desired visual appearance, in order to obtain the desired mixed color of the composite filament in combination with the remaining filament bundles.
  • the process variant in which the composite yarn is determined by a total titer before and after the change is preferably carried out the mixed color of the composite thread is the same size.
  • This variant of the method thus makes it possible to intervene in the melt-spinning process for producing the composite thread in order to change only the mixed color and thus the appearance of the composite thread.
  • the production of the colored polymer melt provided for the extrusion of one of the filament bundles can be carried out according to a process variant such that the delivery rate of the polymer melt to be extruded is increased or decreased.
  • an increase in the delivery rate of the polymer melt would cause the spinneret to have a higher melt throughput during the extrusion of the filament bundle and thus to set a higher spider titer of the filament bundle.
  • the color content within the composite thread relative to the remaining filament bundles, which is determined by the filament bundle is increased overall due to the large mass.
  • the color of the filament bundle thus emerges stronger.
  • different color effects can be produced in the composite thread by changing the throughput of the melt and thus changing the filaments of the filaments. So have thick and thin filaments basically different light reflections. As the filament titer increases, the appearance becomes darker.
  • the process variant in which a plurality of delivery rates of the polymer melts are changed simultaneously in relation to a total delivery amount of all the polymer melts for extruding all the filament bundles can be combined so that the color dominance of the filament bundle, which is extruded at a higher delivery rate, is even higher in the composite thread.
  • the delivery rates of the polymer melts are changed such that the sum of all delivery rates is equal to the total delivery.
  • the filament bundles can be extruded in different spun titer without exceeding or falling short of the total denier of the composite thread after the merger.
  • the method variant is used in which a feed of a liquid paint into at least one of the polymer melts is changed by increasing or decreasing an amount of the paint.
  • the mixed color effects can be improved, in particular, by the fact that the feeds of several liquid colors into several polymer melts is simultaneously changed by increasing or decreasing the amounts of colors.
  • the method according to the invention is therefore particularly suitable for setting a desired mixed color in the composite thread at a start of the process without interrupting the process.
  • the process variant is preferably used, in which the production of the polymer melts is changed repeatedly in a predetermined time interval. This allows regular color patterns to be created in the composite thread, which in turn could be used to create special visual effects in a carpet pattern of a carpet fabric.
  • the method can be operated such that the production of the polymer melt is determined by a machine setting, wherein the extrusion of the filament bundles takes place with changing machine settings.
  • This can be defined, for example, by empirical experiments machine settings that lead to certain mixed colors of the composite thread.
  • the pattern of mixed colors in the composite thread can be specified by regularly changing the machine setting.
  • the device according to the invention has a control device which is connected to at least one of the means for producing the polymer melt and which controls the generating means for changing the color mixing of the composite thread during the extrusion of the filament bundles.
  • control device has a microprocessor, by means of which at least arithmetic operations for Determining a control signal supplied to the generating means in compliance with the total titre of the composite thread can be executed.
  • the production of the polymer melt can be controlled and changed in coordination with the other polymer melts.
  • the means for producing the polymer melts on a plurality of spinning pumps, which are independently driven by a plurality of pump drives.
  • at least one of the pump drives for changing a drive speed of the associated spin pump is coupled to the control device.
  • all pump drives of the spinning pump are preferably connected together with the control device, so that the increase in the drive speed of one of the pump drives can be compensated with a corresponding reduction in the drive speed of another pump drive or a reduction in the drive speed of a plurality of pump drives.
  • the sum of the delivery rates thus corresponds to a total delivery, which remains constant during the extrusion of the filament bundles.
  • the device according to the invention can be developed in such a way that the means for producing the polymer melts have a plurality of feed devices for feeding in a plurality of liquid colors, the feed devices having a plurality of metering pumps which can be driven by separate metering drives, and at least one of the metering drives for Changing a drive speed of the associated metering pump is connected to the control device.
  • the color of the individual polymer melts can be influenced individually by increasing or decreasing the addition of the colorant.
  • the device according to the invention is preferably operated in the embodiment in which the control device has at least one control program, by which a plurality of machine settings are alternately adjustable to the means for generating the polymer melt.
  • the spinning pumps can be moved back and forth between two operating speeds, so that each adjustment results in a mixed color change of the composite thread.
  • the method according to the invention and the device according to the invention are fundamentally suitable for producing multicolored composite threads of a polyamide material, for example a polyester, polypropylene or polyamide or combinations of such materials.
  • a polyamide material for example a polyester, polypropylene or polyamide or combinations of such materials.
  • the method and the device for the production of so-called BCF yarns is suitable.
  • the development of the device according to the invention is used, in which the composite means comprises at least one crimping device, by which the filament bundles are gathered together curled to form the composite thread.
  • Such crimped composite threads can be used directly for further processing of a carpet fabric.
  • the composite means has at least one swirling nozzle through which the filament bundles are brought together to form the composite thread.
  • combinations can be carried out such that both the filament bundles are crimped separately before vortexing or the composite thread after vortexing in a crimping device.
  • additional treatments on the filament bundles as well as in the composite thread before or after the merger are possible. Such treatments may be formed by swirling, stretching and relaxation.
  • a first embodiment of the device according to the invention for carrying out the method according to the invention is shown schematically.
  • the device has a plurality of spinnerets 4.1, 4.2 and 4.3.
  • the spinnerets 4.1, 4.2 and 4.3 are arranged on an underside of a heated spinneret 3.
  • Such spinnerets are well known and therefore not described here.
  • the spinnerets 4.1, 4.2 and 4.3 are each fed with a colored polymer melt.
  • each spinneret 4.1, 4.2 and 4.3 is associated with a spinning pump 2.1, 2.2 and 2.3, via the distribution lines 6.1, 6.2 and 6.3 supply the respective polymer melts under pressure to the spinnerets 4.1, 4.2 and 4.3.
  • the spinning pumps 2.1, 2.2 and 2.3 are arranged side by side on an upper side of the spinning beam 3.
  • Each of the spinning pumps 2.1, 2.2 and 2.3 is assigned a separate pump drive.
  • the spinning pump 2.1 is driven by the pump drive 7.1, the spinning pump 2.2 by the pump drive 7.2 and the spinning pump 2.3 by the pump drive 7.3.
  • a control device 8 is provided, which is coupled to the pump drives 7.1, 7.2 and 7.3.
  • Each of the pump drives 7.1, 7.2 and 7.3 is to be controlled individually via the control device 8, so that the polymer melt streams generated by the spin pumps 2.1, 2.2 and 2.3 are supplied separately and uniformly to the spinnerets 4.1, 4.2 and 4.3.
  • the spinning pumps 2.1, 2.2 and 2.3 are each connected via a melt line to an extruder.
  • a first extruder 1.1 is coupled via the melt line 5.1 with the spinning pump 2.1.
  • a second extruder 1.2 is connected via the melt line 5.2 with the spinning pump 2.2 and the extruder 1.3 via the melt line 5.3 with the spin pump 2.3.
  • a colored polymer melt is produced.
  • the granules of a polymer material and additives and colorants can be added to the extruder.
  • the filament bundles 13.1, 13.2 and 13.3 are withdrawn from the spinnerets 4.1, 4.2 and 4.3 after cooling and after being combined by a respective thread guide 10 by means of a treatment device 11.
  • the treatment device 11 is shown only symbolically, since the process units are formed within the treatment device 11 as a function of the thread type to be produced in each case and individually assembled. Thus, for example, a stretching can be carried out both on the individual filament bundles and in the composite thread.
  • the treatment device 11 could thus be preparation device, drawing devices, turbulators, relaxation devices and / or Have curling devices.
  • Essential for the production of the composite thread 14 is a composite agent which brings together the filament bundles 13.1, 13.2 and 13.3 within the treatment device 11 and produces a composite thread 14 with a mixed color from the differently colored filament strands of the filament bundles 13.1, 13.2 and 13.3.
  • a composite 12 is shown as it is preferably used to make so-called BCF yarns.
  • the composite 12 is formed by a crimping device 20, which is formed in this embodiment by a delivery nozzle 25 and a stuffer box 21.
  • the filament bundles 13.1, 13.2 and 13.3 are pulled together into a thread channel of the delivery nozzle 25 and conveyed together by means of a preferably heated fluid into a stuffer box 21.
  • a yarn plug 22 is formed, so that the individual filaments of the filament bundles 13.1, 13.2 and 13.3 place themselves as loops and bows on the surface of the yarn plug 22 and mix.
  • the thread plug 22 is compressed and then cooled by a cooling drum 23 and dissolved into the crimped composite thread 14.
  • the mixing of the individual filaments of the filament bundles 13.1, 13.2 and 13.3 leads to a mixed color on the now crimped composite thread 14.
  • the filament bundles 13.1, 13.2 and 13.3 can also be used with a Fig. 5 shown embodiment of the composite 12 merge.
  • the composite means 12 is formed by a swirl nozzle 24.
  • a stream of compressed air is introduced into a thread channel, in which the filament bundles 13.1, 13.2 and 13.3 are guided. Consequently this results in a swirling of the individual filaments and a mixing which leads to the composite thread 14.
  • Fig. 1 shown treatment device 11 with a composite means 12 after Fig. 4 or after Fig. 5 To run.
  • the treatment device 11 is followed by a winding device 15, which has in this embodiment two held on a spindle carrier 18 winding spindle 17.1 and 17.2, so that the composite thread 14 can be wound continuously to a coil 16.
  • the winding of the bobbin 16 is effected by means of a traversing device 19 which reciprocates the composite yarn along the bobbin surface so that a cross-wound bobbin is wound.
  • a colored polymer melt is produced in each of the extruders 1.1, 1.2 and 1.3, the colored polymer melts differing in their base color.
  • the extruder 1.1 could produce a blue-colored polymer melt
  • the extruder 1.2 a yellow-colored polymer melt
  • the extruder 1.3 a red-colored polymer melt.
  • the polymer melts can in this case be produced both from an identical polymer material and from different polymer materials.
  • the spinning pumps 2.1, 2.2 and 2.3 are initially driven with identical drive speeds by the pump drives 7.1, 7.2 and 7.3.
  • the flow rates of the polymer melts generated by the spinning pumps 2.1, 2.2 and 2.3 are the same, so that at each of the spinneret 4.1, 4.2 and 4.3 an equal melt throughput for the extrusion of the filament bundles 13.1, 13.2 and 13.3 prevails.
  • the filament bundles 13.1, 13.2 and 13.3 are front Filaments identical, so that each filament bundle 13.1, 13.2 and 13.3 has an equal spinning titer. After merging the filament bundles thus sets a total titre of the composite thread 14 a.
  • the blue-colored filaments of the filament bundle 13.1, the yellow-colored filaments of the filament bundle 13.2 and the red-colored filaments of the filament bundle 13.3 would together lead to a mixed color of the composite thread 14.
  • the production of the polymer melt is changed.
  • a change in at least one drive speed of one of the pump drives 7.1, 7.2 and 7.3 is initiated via the control device 8.
  • the delivery rate of the spinning pump 2.1 could be increased, so that a larger amount of blue-colored polymer melt for extrusion of the spinneret 4.1 is supplied.
  • this variant of the method is preferably carried out in such a way that if there is a change in the delivery rates of one of the spinning pumps 2.1, 2.2 and 2.3, as far as possible no change in the total titre of the composite thread 14 occurs.
  • a microprocessor 9 is provided within the control device 8, in which a total delivery amount is deposited, which is the sum of the individual delivery rates of the three spinning pumps 2.1, 2.2 and 2.3 sets to obtain the total titre of the composite thread 14.
  • a corresponding compensation calculation is carried out via the microprocessor 9 in such a way that at least one or both other spinning pumps reduce the delivery rate he follows.
  • corresponding control signals can be generated and the pump drives 7.1, 7.2 and 7.3 individually adjust in combination, without thereby exceeding a total delivery of the three spinning pumps.
  • the method according to the invention and the device according to the invention are therefore particularly suitable for producing a mixed color with a high degree of flexibility on a composite thread 14 on the basis of provided base colors.
  • the in Fig. 1 illustrated device also operate such that in the control device 8, a control program is deposited, which has, for example, machine settings with two operating points, in which the pump drives 7.1, 7.2 and 7.3 are adjusted at regular time intervals.
  • the composite thread 14 can be advantageously produced with a continuous and uniform color pattern.
  • certain mass ratios of the filament bundles 13.1, 13.2 and 13.3, which result in a first mixed color of the composite thread 14, would be generated by the set delivery quantities at the spinning pumps 2.1, 2.2 and 2.3.
  • the pump drives 7.1, 7.2 and 7.3 controlled via the control device 8 would lead to the respective change in the flow rates of the polymer melts and thus change the mass ratio of the filament bundles 13.1, 13.2 and 13.3 produced during the extrusion. After merger of the filament bundles 13.1, 13.2 and 13.3, an altered mixed color thus sets on the composite thread 14.
  • the conversion of the operating points could be done in short time intervals, so that a pattern formation on the composite thread 14 is possible.
  • the operating states can advantageously be stored as machine settings in the control program of the control device 8, wherein the control program could selectively start one, two or three or even more machine settings.
  • Fig. 2 another embodiment of the device according to the invention shown.
  • the means for producing the polymer melt are shown. All the rest here not listed and described device parts are identical to the embodiment according to Fig. 1 , so that reference is made below to the above description and only the differences will be explained.
  • the coloring of the polymer melts outside the extruder is performed.
  • a plurality of feed devices 27.1, 27.2 and 27.3 are provided which are respectively assigned to the melt lines 5.1, 5.2 and 5.3 on the outlet sides of the extruders 1.1, 1.2 and 1.3.
  • the feed devices are constructed identically, so that the construction on the feed device 27.1 is intended to be exemplary for the description of all feed devices.
  • the feed device 27.1 has a tank 30.1, to which a metering pump 28.1 is connected.
  • the metering pump 28.1 is driven by a metering drive 29.1.
  • the metering pump 28.1 is connected to an outlet side of the melt line 5.1.
  • a liquid color can be taken out of the tank 30.1 by the metering pump 28.1 and continuously supplied to the melt guided in the melt line 5.1.
  • the liquid color and the polymer melt are then mixed in a mixing device 26.1 and fed to the spinning pump 2.1.
  • each melt line 5.1, 5.2 and 5.3 each one of the feed devices 27.1, 27.2, 27.3 and one of the mixing devices 26.1, 26.2 and 26.3 assigned.
  • the metering drives 29.1, 29.2 and 29.3 of the metering pumps 28.1, 28.2 and 28.3 are coupled together with the control device 8, so that by adjusting the flow rates to the metering pumps 28.1, 28.2 and 28.3 individual amounts of colors for coloring the polymer melts can be supplied.
  • a mixed color of a composite thread 12 can thus be changed in a simple manner in such a way in which via the control device 8 at least one of the metering drives 29.1 to 29.3 is controlled to change the feed amount of the color.
  • the drive speed of the metering pump can be increased or decreased via the metering drive, so that a greater or lesser amount of the liquid ink is supplied to color the polymer melt in each case.
  • This process variant also has the advantage that the change in the production of the polymer melt set during the extrusion does not affect the spinning titre of the filament bundles 13.1, 13.2 and 13.3.
  • the spun titers of the extruded filament strands remain substantially constant, as the liquid color essentially changes only the visual appearance of the filament strands.
  • Fig. 3 a further embodiment is shown, which is essentially a combination of the embodiments according to Fig. 1 and Fig. 2 forms. This in Fig. 3 illustrated embodiment also shows only the means for producing the polymer melts, so that to the previous description of the embodiment according to Fig. 1 Reference is made.
  • the polymer melt is produced by an extruder 1.
  • the extruder 1 is connected via the melt line 5.1, 5.2 and 5.3 with the spinning pumps 2.1, 2.2 and 2.3.
  • a mixer device 26.1, 26.2 and 26.3 is arranged, which cooperates with each one feed device 27.1, 27.2 and 27.3.
  • the operating settings of the metering pumps and the operating settings The spinning pumps can be changed alternatively or together.
  • the method according to the invention and the device according to the invention are therefore particularly suitable for producing spun-dyed composite threads and mixed colors.
  • the number of filament bundles and device parts shown in the embodiments for extruding the filament bundles is exemplary.
  • the composite thread can also be formed by two, four or more filament bundles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP08841741A 2007-10-23 2008-10-08 Verfahren und vorrichtung zur herstellung eines mehrfarbigen verbundfadens Not-in-force EP2203578B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007050551A DE102007050551A1 (de) 2007-10-23 2007-10-23 Verfahren und Vorrichtung zur Herstellung eines mehrfarbigen Verbundfadens
PCT/EP2008/063437 WO2009053243A1 (de) 2007-10-23 2008-10-08 Verfahren und vorrichtung zur herstellung eines mehrfarbigen verbundfadens

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Publication Number Publication Date
EP2203578A1 EP2203578A1 (de) 2010-07-07
EP2203578B1 true EP2203578B1 (de) 2012-02-15

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EP08841741A Not-in-force EP2203578B1 (de) 2007-10-23 2008-10-08 Verfahren und vorrichtung zur herstellung eines mehrfarbigen verbundfadens

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US (1) US20100297442A1 (zh)
EP (1) EP2203578B1 (zh)
CN (1) CN101835928B (zh)
AT (1) ATE545722T1 (zh)
DE (1) DE102007050551A1 (zh)
WO (1) WO2009053243A1 (zh)

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CN103225117A (zh) * 2013-05-09 2013-07-31 江苏金茂化纤股份有限公司 涤纶阳离子复合丝纺丝方法
DE102017005161A1 (de) * 2017-05-31 2018-12-06 Oerlikon Textile Gmbh & Co. Kg Verfahren und Schmelzspinnvorrichtung zur Herstellung eines gekräuselten mehrfarbigen Verbundfadens
CN111074359B (zh) * 2017-12-25 2022-05-13 湖北金叶玉阳化纤有限公司 一种烟用过滤嘴棒过程中的彩色聚乳酸纤维的调节装置
CN109112655B (zh) * 2018-06-15 2021-03-02 高君超 原配色丝及其制备工艺
US11242622B2 (en) * 2018-07-20 2022-02-08 Aladdin Manufacturing Corporation Bulked continuous carpet filament manufacturing from polytrimethylene terephthalate
EP3666939A1 (en) * 2018-12-12 2020-06-17 Aladdin Manufactuing Corporation A multifilament bundle of melt spun polymer filaments
CN109537078B (zh) * 2019-01-03 2021-06-01 嘉兴学院 一种幻彩短纤维及其制备方法
CN110820062B (zh) * 2019-11-06 2023-03-07 青岛大学 一种颜色精准可控的复合纤维
CN111101251A (zh) * 2019-12-30 2020-05-05 杭州中泽化纤有限公司 环保型无缝墙布用差别化多色加弹丝复合工艺
CN111793833A (zh) * 2020-06-30 2020-10-20 浙江海利环保科技股份有限公司 一种再生聚酯多组份混色长丝纤维的生产方法
WO2023111759A1 (en) * 2021-12-15 2023-06-22 Aladdin Manufacturing Corporation Systems and methods for producing a bundle of filaments and/or a yarn

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EP0485871B1 (en) 1990-11-10 1995-02-15 Barmag Ag Method and apparatus for combining differently colored threads into a multi-colored yarn
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WO2009053243A1 (de) 2009-04-30
DE102007050551A1 (de) 2009-04-30
ATE545722T1 (de) 2012-03-15
CN101835928A (zh) 2010-09-15
US20100297442A1 (en) 2010-11-25
CN101835928B (zh) 2012-05-23
EP2203578A1 (de) 2010-07-07

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