EP2885447A1 - Melt-spinning process and melt-spinning apparatus for producing a crimped yarn - Google Patents
Melt-spinning process and melt-spinning apparatus for producing a crimped yarnInfo
- Publication number
- EP2885447A1 EP2885447A1 EP13747387.2A EP13747387A EP2885447A1 EP 2885447 A1 EP2885447 A1 EP 2885447A1 EP 13747387 A EP13747387 A EP 13747387A EP 2885447 A1 EP2885447 A1 EP 2885447A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filament bundle
- godet
- treatment
- thread
- 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.)
- Withdrawn
Links
- 238000002074 melt spinning Methods 0.000 title claims abstract description 48
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 32
- 238000002788 crimping Methods 0.000 claims description 28
- 238000009987 spinning Methods 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 abstract description 26
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 238000005496 tempering Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 206010016352 Feeling of relaxation Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 polytrimethylene terephthalate Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 239000002569 water oil cream Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
- D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
- D02G1/127—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes including drawing or stretching on the same machine
-
- 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
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
-
- 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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- 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
- D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
-
- 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
- D02G1/168—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam including drawing or stretching on the same machine
-
- 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
-
- 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
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
-
- 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
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
-
- 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
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll
-
- 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
- Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
Definitions
- the invention relates to a melt spinning method for producing a crimped thread according to the preamble of claim 1 and to a melt spinning device for producing a crimped thread according to the preamble of claim 9.
- a generic method and a generic device are known from WO 2011/138 302 AI.
- the individual treatment steps are carried out under the influence of heat, in particular to influence the crystal morphology of the thread material in the desired manner.
- a high crimp resistance is desired speed of the thread.
- Crimp resistance is the ability of the yarn to preserve the existing crimp under mechanical stress.
- low crimp resistance means that after mechanical stress, a large part of the loops and arcs stored in the filaments regress.
- the filament bundle is heated before stretching and after stretching, so that an oriented molecule structure can be formed within the thread material.
- the post-hiding heat treatment of the filament bundle results in uncontrolled relaxation of the filaments, resulting in partial recovery to unoriented and amorphous portions of the polymeric material.
- non-crystalline molecule structures in the thread material have the disadvantage of a very low crimp resistance.
- DE 199 20 177 A1 discloses a method and a device for producing a crimped thread, in which a classical false twist zone with a heating device, a cooling device and a false twist aggregate is arranged between a plurality of godets.
- DE 10 2008 051 738 A1 discloses a method for producing a crimped thread from a polytrimethylene terephthalate (PTT).
- the filament bundle receives no heat treatment immediately before entering the crimping chamber.
- the lack of heat treatment inevitably leads to the fact that the internal stresses created during stretching can only have an effect during crimping.
- the PTT material occupies a special position with a special molecular structure.
- This object is achieved according to the invention for the melt spinning process in that the filament bundle after stretching and before compression receives a relaxation treatment at a relaxation temperature in the range of 120 ° C to 245 ° C and a minimum yarn tension of> 0.05 cN / dtex.
- the inventive melt spinning device offers the solution with the fact that the heated godets of the draw godet duo each have a step-shaped or conical godet shell, through which a relaxa- tion treatment on a guided with multiple wraps filament bundle with a minimum yarn tension of> 0.05 cN / dtex and a relaxation temperature in the range of 120 ° C to 245 ° C is executable.
- Advantageous developments of the invention are defined by the features and feature combinations of the respective subclaims.
- the invention is based on the finding that in the conventional melt spinning process of the generic type when the filament bundle passes from the draw godet duo to the curling means, a complete collapse of the yarn tension on the filament bundle occurs. Such stress dips on the filament bundle lead directly to the fact that the thread material restructures when relaxing in an energetically favorable state, so that more amorphous and semi-amorphous portions occur in the molecular structure. Such lack of crystallinity thus favors a lack of crimp resistance.
- a relaxation treatment is performed on the filament bundle before entering the crimping, which ensures a minimum yarn tension of> 0.05 cN / dtex.
- the relaxation temperatures are in the range between 120 ° C and 245 ° C.
- the inventive melt spinning device offers the great advantage, in particular, that the relaxation treatment with a minimum yarn tension can be carried out directly on the draw godet duo.
- the godet coats of the godet godets of the draw godet duo have a conical or step-like shape, so that with each turn of the filament bundle At the circumference of the godet coats a minimum yarn tension is maintained.
- This heating of the thread material in the tensioned state of the filament bundle to the relaxation temperature in the range between 120 ° C to 245 ° C is possible.
- the set surface temperature of the godet coats is slightly higher than the relaxation temperature. Usually, the temperatures on the godet surface are adjusted by about 5 ° C to 15 ° C above the desired yarn temperatures.
- the process variant in which the yarn tension acting on the filament bundle in the range of 0.1 cN / dtex to 2.0 cN / dtex preferably in the range during the relaxation treatment is particularly advantageous from 0.2 cN / dtex to 0.7 cN / dtex.
- the relaxation treatment of the filament bundle immediately before the compression can be carried out in the melt-spinning process according to the invention with all known devices for producing minimum yarn tensile forces and for heat-treating the yarn.
- the method variant in which the filament bundle is guided for relaxation treatment in a plurality of wraps on a galette duo with heated godets and conical godet sheaths is particularly advantageous.
- the conicity of the godet shells ensures that a defined yarn tension prevails during heating of the yarn material in the case of several turns of the filament bundle. It has proved to be particularly advantageous that the conversion of the molecular structure of the thread material during the relaxation can still be stabilized by a subsequent fixing treatment.
- the method variant is preferably used, in which the filament bundle after the relaxation treatment while maintaining a discoursefadenzug- force of> 0.05 cN / detx receives a fixing treatment with a fixing temperature in the range of 60 ° C to 240 ° C.
- This process is preferably achieved by guiding the filament bundle on cold godets of a godet duo.
- the fixing temperature should be at least 5 ° C below the relaxation temperature.
- the method variant is particularly suitable, in which the filament bundle receives a heat treatment at a treatment temperature below the relaxation temperature before compression while maintaining a minimum thread tension of> 0.05 cN / dtex.
- the treatment temperature should be in the range between 5 and 100 ° C below the previously set relaxation temperature. This ensures that no undesired restructuring in the molecular structure of the thread material can form.
- This process step is also preferably carried out by heated godets of a godet duo, on which the filament bundle is guided for the heat treatment in several wraps.
- the filament bundle is preferably conveyed for compression by a hot air flow in the stuffer box.
- a hot air flow in the stuffer box.
- the flexibility for carrying out the melt spinning method according to the invention is increased by arranging one or more godet ducts between the drafting device and the crimping device according to an advantageous development.
- a fixing treatment or a heat treatment can optionally be carried out on a filament bundle guided with several wraps.
- the godet duel preferably has cold godets.
- the heat treatment is carried out with a heated godet duo.
- the development of the melt spinning device according to the invention in which a plurality of godets are arranged between the drawing device and the curling device.
- the fixing treatment and the heat treatment can be carried out successively.
- the crimping device is preferably designed with a delivery nozzle which interacts with a stuffer box on the outlet side.
- a delivery nozzle which interacts with a stuffer box on the outlet side.
- the yarn plug is preferably guided for cooling on the circumference of a cooling drum.
- the melt spinning process of the present invention and the melt spinning apparatus of the present invention are suitable for producing crimped yarns in a single step process having a high crimp resistance which can otherwise be achieved only in a two-step process on yarns.
- FIG. 1 shows schematically a view of a first exemplary embodiment of the inventive melt spinning device
- Fig. 2 shows schematically a view of another embodiment of the invention erf indung according to S chmelz spinning device
- Fig. 3 shows schematically a view of another embodiment of the invention melt spinning device
- Fig. 4 shows schematically a view of another embodiment of the invention erf indung according to S chmelz spinning device
- Fig. 1 is a schematic representation of a view of a first embodiment of the inventive melt spinning device for producing a crimped yarn is shown.
- the embodiment of the inventive melt spinning device is shown using the example of a yarn path, whereby such melt spinning devices are also used for producing a plurality of threads parallel to each other.
- the exemplary embodiment shown in FIG. 1 has a spinning device 1, a cooling device 5, a stretching device 11, a crimping device 15, an aftertreatment device 20 and a winding device 24, which are arranged one behind the other to form a yarn path.
- the spinning device 1 is shown in this embodiment only by a spinning head 2.
- the spinning head 2 has at least one spinning pump (not shown here) and a spinneret 3, which has at the bottom a nozzle plate with a plurality of nozzle bores.
- the arranged within the heated spinning head 2 spinneret 3 is coupled to the spin pump, which is connected via a melt inlet 4 at the top of the spinner head 2 with a melt source, not shown here, for example, an extruder.
- the spinning head 2 which is also referred to in the art as a spinning beam, a plurality of spinnerets side by side.
- a cooling device 5 which forms a cooling shaft 6 for receiving freshly extruded filaments, wherein the cooling shaft 6 is associated with a blowing means 7 for generating a cooling air flow.
- the cooling air can in this case be carried out from the outside to the inside by a transverse flow blowing or a radial blowing.
- a transverse flow blowing or a radial blowing it is also possible to direct a cooling air flow radially from the inside to the outside through the filament bundle.
- the filaments 8 produced by the spinnerets 3 are combined after cooling to form a filament bundle 10.
- a preparation device 9 is provided below the cooling device 5.
- the preparation device 9 usually has a Sammelf Adenixie and a wetting agent. As wetting agents preparation pens or preparation rollers can be used.
- a drafting device 11 which is formed from a withdrawal sgalettenduo 12 with two heated godets 12.1 and 12.2 and a stretch godet duel 14 with the heated godets 14.1 and 14.2.
- the heated godets 12.1 and 12.2 of the withdrawal godet duct 12 and the heated godets 14.1 and 14.2 of the draw godet duet 14 are each arranged in a godet box 13.
- the heated godets 14.1 and 14.2 of the draw godet duet 14 are each provided with a conical godet casing.
- the conicity of the godet shells on the heated godets 14.1 and 14.2 is chosen such that after hiding the filament bundle 10 in each turn a minimum yarn tension of above 0.05 cN / dtex, preferably 0.1 cN / dtex acts on the filament bundle.
- the crimping device 15 is arranged in this embodiment by a delivery nozzle 16 and a 16 arranged on the outlet side of the delivery nozzle Stuffer box 17 formed, which cooperate with a downstream cooling drum 19.
- the delivery nozzle 16 is coupled to a compressed air source to convey the filament bundle 10 by means of an air flow into the stuffer box 17 and to compress it into a yarn plug.
- the yarn plug 18 is cooled at the periphery of the cooling drum 19 by a cooling air.
- the crimping device 15 is arranged downstream of an aftertreatment device 20, which on the one hand dissolves the yarn plug 18 by subtracting a crimped yarn on the circumference of the cooling drum 19 and on the other hand, a swirling of the thread to increase the thread conclusion.
- a swirl nozzle 22 is arranged between two guide godet units 23.1 and 23.2. Each of the guide godet units 23.1 and 23.2 has a godet and a pulley. At the end of the crimped thread 21 is wound by means of the winding device 24 to form a coil 25.
- winding devices which has a winding turret 28 with two projecting winding spindles 29.1 and 29.2, which are successively guided in a winding area and thus lead to a continuous winding of the crimped yarn.
- Such winding devices are well known, so that no further description takes place for this purpose.
- a granulate of a polymer material for example a polyester is melted via an extruder and fed via the melt inlet 4 to the spinning head 2.
- the melt is conveyed under pressure with a spinning pump to the spinneret 3, so that a plurality of filaments 8 are extruded on the underside of the spinneret 3.
- the freshly extruded filaments 8 are within the cooling device 5 cooled with a cooling air flow and merged at the end to form a filament bundle 10.
- the filaments 8 receive a wetting, which is preferably an oil-water emulsion.
- the filament bundle 10 is pulled out of the spinning device 1 by the withdrawal godet duo 12.
- the godets 12.1 and 12.2 of the withdrawal godet duct 12 have a surface temperature on the godet sheaths to heat the yarn material to a desired yarn temperature in the range of 80 ° C to 120 ° C.
- the filament bundle is guided with 10 to 15 loops on the withdrawal godet duo 12.
- the stretch godet duo 14 is driven at a speed difference, so that the filament bundle 10 is stretched in the yarn path between the withdrawal godet duo 12 and the draw duo 13.
- the godets 14.1 and 14.2 of the draw godet tube 14 are heated in such a way that a filament temperature at the filament bundle in the range from 120 to 245 ° C. is preferably reached 170 to 230 ° C.
- the two godet sheaths of the godets 14.1 and 14.2 can be made slightly conical.
- the change in the guide diameter of the godet shrouds of godets 14.1 and 14.2 is selected as a function of the 8 to 12 wraps of the filament bundle such that at least one yarn tensile force of 0.05 cN / dtex, preferably 0.1 cN / dtex, acts in each wrap ,
- the diameter change of the godet coats in the godets 14.1 and 14.2 is such that a maximum yarn tension of 2.0 cN / detex is not exceeded. It has been found that in a range of 0.2 to 0.7 cN / detx an advantageous relaxation treatment is possible.
- the relaxation temperature of the thread treatment which is determined by the surface temperature of the godet coats of the godets 14.1 and 14.2, is set to a temperature between 120 ° C to 245 ° C.
- the relaxation treatment on the filament bundle 10 results in a uniform restructuring of the molecular structure without major portions of amorphous or semiamorphic regions.
- the high crystallinity of the thread material ensures a stable crimping behavior with correspondingly high crimp resistance in the crimped thread.
- the filament bundle 10 is conveyed through the delivery nozzle 16 into the stuffer box 17 and compressed to a yarn plug. Depending on the temperature of the relaxation treatment, the conveyance of the filament bundle can take place with a hot air stream or with a cold air stream.
- the crimped filaments of the filament bundle 10 are conveyed out of the stuffer box 17 as a thread stopper 18 and cooled at the circumference of the cooling drum 19.
- the dissolution of the thread stopper 18 to the crimped thread 21 takes place through the aftertreatment device 20, which has a first guide godet unit 23.1. In the course of the crimped thread 21 is swirled in the Verwirbelungsdüse 22 and then guided over the second guide godet unit 23.2 to the winding device 24. In the winding device 24, the crimped yarn 21 is wound to the spool 25.
- the embodiment of the melt spinning device according to the invention shown in FIG. 1 thus makes it possible to carry out the invention.
- Melt-spinning process according to the invention wherein the filament bundle enters the crimping device in the temperature predetermined by the relaxation treatment.
- the yarn plug is preferably heated within the stuffer box.
- the delivery nozzle 16 is operated with a hot air stream.
- only limited temperature changes of the thread material can be achieved.
- the embodiment of the inventive melt spinning apparatus of FIG. 2 is particularly suitable.
- the exemplary embodiment of the inventive melt spinning apparatus illustrated in FIG. 2 is essentially identical in construction to the aforementioned exemplary embodiment according to FIG. 1, so that only the differences are explained in order to avoid repetitions at this point.
- the spinning device 1, the stretching device 11, the crimping device 15, the aftertreatment device 20 and the winding device 24 are identical to the exemplary embodiment according to FIG. 1 formed. In that regard, reference is made to the above description.
- the Temperiergalettenduo 27 has two heated godets 27.1 and 27.2 with cylindrical Galettenmänteln.
- the godets 27.1 and 27.2 are arranged in a godet box 13.
- this is also performed with several loopings, preferably 10 to 15 wraps on the circumference of the godet coats of the godets 27.1 and 27.2.
- a variant of the method according to the invention can be operated in which, after the relaxation of the filament bundle, an additional heat treatment takes place before the filament bundle is compressed.
- the godets 27.1 and 27.2 of Temperiergalettenduo s 27 are set to a treatment temperature that is below the relaxation temperature. The difference should be selected between 5 ° C and 100 ° C, depending on the polymer type. It is essential here that the relaxation temperature set during the relaxation is not exceeded. Exceeding the relaxation temperature in the subsequent heat treatment, there is a risk that a renewed restructuring of the molecular structure of the thread material begins.
- the heat treatment of the filament bundle immediately prior to the compression allows the production of the crimping to be carried out independently of the relaxation treatment. Thus, with the heat treatment targeted tempering on the thread material of the filament bundle be carried out in order to obtain a uniform and intensive looping of the filaments.
- the embodiment of the inventive melt spinning device according to FIG. 3 has proven particularly useful.
- two Galettenduos are provided between the drawing device 11 and the crimping device.
- a first pair of godets directly on the outlet side of the drawing device 11 is designated as a fixing godet duo 26.
- the Fixiergalettenduo 26 has the godets 26.1 and 26.2, the Galettenmäntel are unheated.
- the following pair of godets in this embodiment is also a Temperiergalettenduo 27 with the heated godets 27.1 and 27.2.
- a further process step is provided between the relaxation and the compression of the filament bundle.
- the Fixiergalettenduo 26 is used with the cold godets 26.1 and 26.2 to cool the filament of the filament bundle 10.
- the surface temperatures of the godet shells of godets 26.1 and 26.2 are set to a yarn temperature between 60 and 240 ° C. This allows the material structure of the thread material to be fixed advantageously before compression. It is essential in the case of the additional process steps of fixing and tempering described in FIG. 2 that a minimum yarn tension of> 0.05 cN / dtex, preferably> 0.1 cN / dtex, be maintained throughout the treatment , This ensures that the occurring in the stress-free state and unwanted reprecipitations of the molecular structure can be avoided.
- the changes in diameter of the godet sheaths of the godets 14.1 and 14.2 of the draw godet duvet 14 can also be achieved by other shaping of the godet shells.
- a stepped shaping of the gallette coats of the godets 14.1 and 14.2 could advantageously be used to ensure a minimum tensile force.
- zones of conical skirt sections on the godet sheaths and cylindrical sheath sections can be alternately used to avoid stress relief on the filaments of the filament bundle. Since stage and conical godets Galette for godets for guiding threads are well known, will be omitted at this point for further explanation.
- the melt spinning process according to the invention as well as the melt spinning device according to the invention is illustrated by the example of a crimped yarn, which consists of a Filament bundle is generated.
- crimped threads are preferably produced as monochrome threads.
- multicolored threads which are preferably used for the production of carpets, preferably several filament bundles of differently colored polymer melt or different cross-sectional shapes, filament numbers or filament titers are produced and combined before winding into a crimped composite thread.
- Such an embodiment of the inventive melt spinning apparatus is shown schematically in Fig. 4. In the embodiment of the inventive melt spinning apparatus shown in FIG.
- the spinning device 1 has a spinning head 2, on the underside of which three spinnerets are held side by side.
- Each of the spinnerets 3 is connected to a spinning pump, not shown here, which is coupled via a separate melt inlet 4, each with a separate extruder.
- the extruded through the spinnerets 3 filaments 8 are passed together through a cooling duct 6 of the cooling device 5 and cooled by means of a cooling air flow.
- a preparation device 9 which combines the extruded filaments into a separate filament bundle 10 for each spinneret 3.
- the filament bundles 10 are subsequently removed from the spinning device 1 by a spinning godet unit 30 provided per spinneret 3 and fed to a drawing device.
- the filament bundles 10 produced by the three spinnerets 3 are guided parallel to one another and stretched together.
- the drawing device 11 has a deduction godet duo 12 and a stretch godet duo 14.
- the withdrawal godet duo 12 is formed in this case by a heated galette 12.1 and a Beilaufrolle 12.3.
- the stretch godet duo 14 has the heated godets 14.1 and 14.2, each having a conical godet shell.
- the stretch godet duo 14 is identical to the aforementioned embodiments and arranged within a godet box 13.
- a Temperiergalettenduo 27 is provided, which is also identical to the aforementioned embodiment of FIG. 2 is formed.
- the filament bundles 10 are compressed together by means of the delivery nozzle 16 to form a thread stopper 18.
- the yarn plug 18 is produced from differently colored filament bundles and dissolved after cooling to the crimped thread.
- the filament bundles could also have different individual titers and different filament cross sections and, in addition, may also be formed from different polymer materials.
- the method according to the invention and the device according to the invention thus extend to crimped monocolor threads as well as to curled multicolor threads. It is essential here that the filaments of the filament bundle after stretching and before compression receive a relaxation treatment at a minimum yarn tension.
- the process according to the invention and the device according to the invention are fundamentally suitable for all thermoplastic polymers used for fiber production. However, particularly good results of the crimp resistance can be achieved, in particular in the production of crimped polyester filaments.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102012016368 | 2012-08-17 | ||
DE102012021142 | 2012-10-27 | ||
PCT/EP2013/066607 WO2014026902A1 (en) | 2012-08-17 | 2013-08-08 | Melt-spinning process and melt-spinning apparatus for producing a crimped yarn |
Publications (1)
Publication Number | Publication Date |
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EP2885447A1 true EP2885447A1 (en) | 2015-06-24 |
Family
ID=48949143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP13747387.2A Withdrawn EP2885447A1 (en) | 2012-08-17 | 2013-08-08 | Melt-spinning process and melt-spinning apparatus for producing a crimped yarn |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150218733A1 (en) |
EP (1) | EP2885447A1 (en) |
JP (1) | JP2015529287A (en) |
CN (1) | CN104583471B (en) |
WO (1) | WO2014026902A1 (en) |
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WO2014029627A1 (en) | 2012-08-23 | 2014-02-27 | Oerlikon Textile Gmbh & Co. Kg | Melt-spinning method and melt-spinning apparatus for producing a crimped yarn |
US9776369B2 (en) * | 2013-03-15 | 2017-10-03 | Shimano American Corp. | Heated liquid tapered line production device and method |
DE102017100487A1 (en) * | 2017-01-12 | 2018-07-12 | Trützschler GmbH & Co Kommanditgesellschaft | Apparatus and method for producing a multicolor yarn |
DE102017100488A1 (en) | 2017-01-12 | 2018-07-12 | Trützschler GmbH & Co Kommanditgesellschaft | Apparatus and method for producing a textured filament or yarn |
DE102017005161A1 (en) * | 2017-05-31 | 2018-12-06 | Oerlikon Textile Gmbh & Co. Kg | Method and melt spinning apparatus for producing a crimped multicolor composite thread |
CN113287859B (en) * | 2021-06-28 | 2022-08-30 | 威海联创工业自动化科技股份有限公司 | Device for producing imitated bristle conical fibril |
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DE2318887C3 (en) * | 1973-04-14 | 1982-11-11 | Akzo Gmbh, 5600 Wuppertal | Process for the production of polyester threads by shrinking heat-drawn threads in two stages |
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US5054174A (en) * | 1988-12-13 | 1991-10-08 | Barmag Ag | Method of producing an air textured yarn |
CA2080621A1 (en) * | 1992-03-30 | 1993-10-01 | George M. Kent | Continuous process for spinning and drawing polyamide and apparatus thereof |
US6113825A (en) * | 1995-05-08 | 2000-09-05 | Shell Oil Company | Process for preparing poly(trimethylene terephthalate) carpet yarn |
US6471906B1 (en) * | 2000-07-10 | 2002-10-29 | Arteva North America S.A.R.L. | Ultra low-tension relax process and tension gate-apparatus |
CN101120127B (en) * | 2005-02-04 | 2010-06-16 | 欧瑞康纺织有限及两合公司 | Method and device for producing a crimped composite thread |
WO2007046397A1 (en) * | 2005-10-19 | 2007-04-26 | Toray Industries, Inc. | Crimped yarn, method for manufacture thereof, and fiber structure |
JP5105619B2 (en) * | 2008-11-11 | 2012-12-26 | 住江織物株式会社 | Original polyethylene terephthalate false twisted yarn, method for producing the same, and carpet using the same |
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2013
- 2013-08-08 WO PCT/EP2013/066607 patent/WO2014026902A1/en active Application Filing
- 2013-08-08 CN CN201380043818.5A patent/CN104583471B/en not_active Expired - Fee Related
- 2013-08-08 JP JP2015526939A patent/JP2015529287A/en active Pending
- 2013-08-08 EP EP13747387.2A patent/EP2885447A1/en not_active Withdrawn
- 2013-08-08 US US14/421,314 patent/US20150218733A1/en not_active Abandoned
Non-Patent Citations (1)
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See references of WO2014026902A1 * |
Also Published As
Publication number | Publication date |
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JP2015529287A (en) | 2015-10-05 |
CN104583471A (en) | 2015-04-29 |
US20150218733A1 (en) | 2015-08-06 |
WO2014026902A1 (en) | 2014-02-20 |
CN104583471B (en) | 2017-11-10 |
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