WO2003048432A2 - Verfahren zur herstellung von gekräuseltem polyester-multifilament-garn und ein gekräuseltes polyester-multifilament-garn aus diesem verfahren - Google Patents
Verfahren zur herstellung von gekräuseltem polyester-multifilament-garn und ein gekräuseltes polyester-multifilament-garn aus diesem verfahren Download PDFInfo
- Publication number
- WO2003048432A2 WO2003048432A2 PCT/CH2002/000665 CH0200665W WO03048432A2 WO 2003048432 A2 WO2003048432 A2 WO 2003048432A2 CH 0200665 W CH0200665 W CH 0200665W WO 03048432 A2 WO03048432 A2 WO 03048432A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- yarn
- acid
- pet
- terephthalate
- Prior art date
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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
- D02G1/12—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
Definitions
- the invention relates to a method for producing a crimped polyester multifilament yarn by the stuffer box texturing method, in which the yarn is first subjected to a drawing procedure under the action of heat at at least a first temperature T1 and then also crimped under the action of heat in a stuffer box at a second temperature T2.
- the invention relates to the crimped polyester multifilament yarn resulting from the process.
- polyamide yarns in particular can be textured, resulting in a largely crimp-stable product.
- the temperature T2 is regularly selected to be equal to or higher than the temperature T1.
- the hot propellant in its function as a heat transfer medium in the texturing device, ie the stuffer box has the task, to further heat the thread heated by the upstream hot stretching, or at least to keep it at its temperature in order to give it the temperature necessary for thread deformation and fixation.
- Polyester yarns such as PET yarns can also be crimped in the same way; So far, however, it has not been possible to produce a sufficiently crimp-stable product.
- DTY Drawn Textured Yarn
- this process is mechanically complex and cost-intensive.
- the yarn is also mechanically stressed, which has a disadvantageous effect on the product quality
- the yarn is provided with a tendency to twist in one direction of rotation, which leads to process problems in textile further processing and is the reason for the skewing of the stitches in the finished textile product reduce, but this increases the logistical effort in production, storage and further processing and thus also the costs.
- the advantage of the yarn produced by stuffer box texturing is, on the one hand, that the crimped yarn is less expensive to produce than the false twist texturing process. On the other hand, the compression-textured yarn shows no mechanical damage and also no tendency to twist or curl.
- the application also relates to a crimped polyester multifilament yarn with high crimp resistance according to claim 12.
- the first temperature T1 in the range between 150 ° C and 230 ° C, and the second temperature T2 by ⁇ T 5 ° C to 55 ° C lower than the first temperature T1, but absolutely not less than 130 ° C, chosen.
- the temperature differences ⁇ T are 5 ° C. to 45 ° C. or 10 ° C. to 30 ° C. or 20 ° C. to 40 ° C.
- the preferred temperatures T1 at which the yarn is drawn are between 210 ° C and 160 ° C and the preferred minimum temperature of the crimping device T7 is 145 ° C.
- suitable polymers are polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT) or polybutylene terephthalate (PBT), whereby these are understood to mean polyesters which contain at least 80% PET, PTT or PBT and a maximum of 20% units derived from another diol as ethanediol such as Diethylene glycol, tetramethylene glycol based on PET and derived from a diol other than propanediol based on PTT and derived from a diol other than butanediol based on PBT or another acid (based on PET, PTT and PBT) as terephthalic acid, for example isophthalic acid, hexahydroterephthalic acid or dibenzoic acid ,
- PET polyethylene terephthalate
- PTT polytrimethylene terephthalate
- PBT polybutylene terephthalate
- the yarn material used advantageously has a textile viscosity.
- the range of intrinsic (in the thread) yarn viscosity for PET is e.g. between 0.54 and 1.2 dl / g, preferably between 0.58 and 0.64 dl / g, measured in phenol / terachloroethane (1: 1) at a temperature of 20 ° C.
- the suitable intrinsic viscosity is between 0.60 and 0.95 dl / g, also measured in phenol / tetrachloroethane (1: 1) at a temperature of 20 ° C.
- the polyesters can contain conventional additives such as e.g. Contain matting agents, dyes, stabilizers, catalysts, polymer substances etc. Titanium dioxide is particularly suitable as a matting agent.
- the crimp resistance can be further increased by branching agents as modifiers for the polyester material used.
- branching agents with 3 to 4 functional alcohol or acid groups, in particular for polyethylene terephthalate (PET), are e.g. Trimethylpropane, trimethylolethane, pentaerythritol, glycerol, trimesic acid, trimellitic acid or pyromellitic acid.
- Pentaerythritol As a branching agent for polyethylene terephthalate (PET), this can be done with a concentration between 20 and 1000 ppm (original weight of the Pentaaerythrits based on the finished PET). Pentaaerythritol with a concentration between 50 and 250 ppm is particularly suitable. Pentaaerythritol with a concentration between 70 and 180 ppm is very particularly suitable.
- Textured yarns produced by the method according to the invention are suitable for textured filament products, including carpet manufacture.
- the method can also be used in staple fiber production.
- FIG. 2 shows a crimping device that can be used in the arrangement of FIG. 1 in cross section.
- the multifilament yarn delivered from the spinneret or from the roll is first stretched between godet duos 2, 3 and 4 and then reaches a fixing / relaxation zone between duo 4 and 5.
- godet duos 2, 3, 4 and 5 heated and allow multiple gaits.
- the stretched yarn is passed on from the godet duo 5 to a slip roller 6.
- the yarn conveyed by the slip roller 6 is compressed into a thread plug in a crimping device 7 designed as a stuffer box.
- the thread plug After the crimping in the stuffer box of the crimping device 7, the thread plug is cooled in a cooling device 8, dissolved on a disintegration device 9 by the removal of godets from a duo 10 to form a crimped filament yarn and finally wound on bobbins 11.
- the structure of the crimping device 7 according to FIG. 2 essentially corresponds to the known Fiber M stuffer box, as described in GB 1422949. It comprises a thread channel 12, in which the thread 1 (the yarn) is conveyed to a stuffer box 14, preferably by superheated steam 13.
- the superheated steam is caused by a Post-heater 15 generates and strikes the thread to be conveyed in the thread channel 12 after it has passed a thread labyrinth 16.
- the contact between filament yarn and superheated steam enables a multidimensional deformation of the filament yarn, which is initiated in a first relaxation area 17.
- the filament yarn is compressed to form a thread plug 18 and the hot steam 19 leaves the stuffer box 14 radially, supported by suction.
- the POY production speeds in the two-stage process are a maximum of 8000 m / min.
- the POY production speeds are a maximum of 6000 m / min, preferably a maximum of 4000 and particularly preferably a maximum of 3000 m / min.
- the table below contains data from crimped PET multifilament yarns in the titer range around 250 dtex or 187 dtex with 72 individual filaments, which have excellent crimp resistance close to 100% with unchanged properties, such as crimping, tear resistance and elongation at break compared to the comparison yarns also shown in the table ,
- the crimping properties were determined in accordance with DIN 53840 part 1, but in deviation from this standard, however, on yarn strands with a strand length of 10 m. Yarn strands with this strand length enable optimal development of the crimp in hot air (development temperature 120 ° C., development time 10 min), especially in the case of compression-textured filament yarns.
- the crimp is the shortening of a smooth filament yarn due to its crimped structure after the crimp is triggered.
- the crimp resistance indicates the ratio of crimping after a defined mechanical tensile load for 10 sec and a recovery time of 10 min to crimping before loading. For them, the size of the fineness-related traction is particularly important. Taking into account the tensile forces occurring during further processing in the weaving and knitting mill, a fineness-related tensile force of 4 cN / dtex was selected. Tensile strength and elongation at break were measured in accordance with DIN 53834.
- a polyester POY yarn was first spun separately and wound up in the form of a bobbin. These coils served as Template material for the subsequent stretching and texturing process.
- the yarn was drawn off using Duo 4 at a speed of 1,400 m / min and stretched approximately 1.78 times between Duo 4 and Duo 5.
- the thread was then passed over the slip roller 6 and subsequently reached the crimping device 7, in which it was upsetting textured.
- the compression-textured yarn was discharged from the crimping device 7 in the form of a plug into a bowl-shaped collecting container and collected there.
- the slip roller 6 was used to reduce the thread tension in front of the crimping device 7.
- Duo 2 and Duo 3 of the device according to FIG. 1 were not used for the use within the example for variants 1 and 2.
- the master thread was drawn off with the duo 3 and stretched between the duos 3, 4 and 5 by a factor of 1.43.
- Duo 2 was not used.
- the POY-Gam used in variants 1 and 2 had a titer of 194dtex / 36.
- the POY titer of variant 3 was 112.6dtex / 36.
- the number of filaments per POY yarn was 36 in each case.
- Two POY template games were combined into a thread and stretched and textured together. Titer (dtex), tear strength (cN / dtex), crimping (%) crimp resistance at 4cN / dtex (%) and the elongation at break (%) in the table refer to the textured material, the crimped polyester multifilament yarn, i.e. on material that has been removed from the thread plug.
- the same POY master thread was used for variants 1 and 2, i.e. the same POY coils were always used for these two variants.
- the data in the table show that a high curl stability can be achieved, which is advantageously close to 100% if the temperature in the texturing device is lower than the temperature of the last duo 5 before texturing.
- Variants 1.1, 1.2 and 3.1 according to the invention thus show crimp resistance which is close to 100%.
- the temperatures of the last duo were 15 to 30 ° C higher than those of the crimping device or stuffer box.
- the temperatures of the texturing chamber were 220 ° C and 210 ° C. These were 10 ° C to 25 ° C higher than the temperature of the last duo (5). In variant 3.1, the temperature of Duo 5 was 30 ° C higher than that of the crimping device 7.
- Hot steam 0 cooling section 1: room air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002342503A AU2002342503A1 (en) | 2001-12-05 | 2002-12-04 | Method for the production of crimped polyester multifilament yarns and crimped polyester multifilament yarn produced according to said method |
DE10295642T DE10295642D2 (de) | 2001-12-05 | 2002-12-04 | Verfahren zur Herstellung von gekräuseltem Polyester-Multifilament-Garn und ein gekräuseltes Polyester Multifilament-Garn aus diesem Verfahren |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH22182001 | 2001-12-05 | ||
CH2218/01 | 2001-12-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003048432A2 true WO2003048432A2 (de) | 2003-06-12 |
WO2003048432A3 WO2003048432A3 (de) | 2003-09-12 |
Family
ID=4568047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2002/000665 WO2003048432A2 (de) | 2001-12-05 | 2002-12-04 | Verfahren zur herstellung von gekräuseltem polyester-multifilament-garn und ein gekräuseltes polyester-multifilament-garn aus diesem verfahren |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002342503A1 (de) |
DE (1) | DE10295642D2 (de) |
WO (1) | WO2003048432A2 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1805026A1 (de) * | 1967-10-26 | 1969-06-26 | Techniservice Corp | Verfahren zur Behandlung von textilem Strangmaterial |
GB1369851A (en) * | 1971-10-06 | 1974-10-09 | Teijin Ltd | Polyester fibres |
DE3523321A1 (de) * | 1984-07-13 | 1986-03-27 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Verfahren und vorrichtung zur herstellung von spinnfasern |
-
2002
- 2002-12-04 WO PCT/CH2002/000665 patent/WO2003048432A2/de not_active Application Discontinuation
- 2002-12-04 AU AU2002342503A patent/AU2002342503A1/en not_active Abandoned
- 2002-12-04 DE DE10295642T patent/DE10295642D2/de not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1805026A1 (de) * | 1967-10-26 | 1969-06-26 | Techniservice Corp | Verfahren zur Behandlung von textilem Strangmaterial |
GB1369851A (en) * | 1971-10-06 | 1974-10-09 | Teijin Ltd | Polyester fibres |
DE3523321A1 (de) * | 1984-07-13 | 1986-03-27 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Verfahren und vorrichtung zur herstellung von spinnfasern |
Also Published As
Publication number | Publication date |
---|---|
AU2002342503A1 (en) | 2003-06-17 |
WO2003048432A3 (de) | 2003-09-12 |
AU2002342503A8 (en) | 2003-06-17 |
DE10295642D2 (de) | 2004-10-28 |
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