EP0323986B1 - Process for pre-entangling a synthetic multifilament feed yarn and yarn so produce - Google Patents
Process for pre-entangling a synthetic multifilament feed yarn and yarn so produce Download PDFInfo
- Publication number
- EP0323986B1 EP0323986B1 EP19880905648 EP88905648A EP0323986B1 EP 0323986 B1 EP0323986 B1 EP 0323986B1 EP 19880905648 EP19880905648 EP 19880905648 EP 88905648 A EP88905648 A EP 88905648A EP 0323986 B1 EP0323986 B1 EP 0323986B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- texturing
- entangling
- swirling
- textured
- 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.)
- Revoked
Links
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
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0286—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist characterised by the use of certain filaments, fibres or yarns
-
- 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
- D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
-
- 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
Definitions
- the invention relates to a method for pre-intermingling a partially drawn polyester POY, original yarns for the drawing, texturing and / or drawing texturing process by means of an air intermingling nozzle for producing a textile yarn or plain yarn for textile fabrics and the yarn produced by the process.
- a swirling process is known, according to which an undrawn or partially stretched original yarn, for a false twist texturing process, is swirled weakly at an air pressure of approximately 0.5 bar, in order to avoid the actual texturing process due to too intensive swirling points in the form of knots disturb.
- the knots created in the original yarn must dissolve again during the further processing of the yarns in order to avoid defects.
- the object of the known method is to reduce thread breaks, particularly in the case of fine-fibrillated yarns. After texturing, these are yarns then swirl again, whereby the thread closure of the textured yarn produced here has the same task as for the original yarn, namely the improvement or the guarantee of further processability.
- the swirling points according to the known method have the disadvantage that they disrupt the uniformity of the product image, especially in the case of fine titers. So far, it has not been possible to weave sufficiently interwoven textured yarns for a smooth bobbin run-off without giving up an uneasy product appearance.
- a method for the simultaneous stretch texturing of partially stretched polyamide yarns is also known, with swirling using an air swirling nozzle before entering the texturing zone (FR-A-22 96 710).
- the swirling takes place with an air pressure of at least 2.5 bar, 100-1000 swirls / m, preferably more than 300 swirls, being aimed for.
- a strong intermingling in the master yarn has the disadvantage, however, that with polyester POY the knots are only partially dissolved during texturing. The result is an insufficient uniformity of the crimp, which leads to a clear drawing in the tissue.
- the object of the invention is to provide a method which ensures good thread closure in a textured or stretched filament yarn, ensures problem-free bobbin flow during further processing and enables a fabric which is as free of drawings as possible.
- the invention serving to achieve the object is characterized in that the feed yarn is swirled at an air pressure of 0.5 to 2.0 bar.
- the intermingling takes place before the yarn enters the texturing device at an air pressure in the nozzle body of 0.5 to 2.0 bar.
- the pre-interlaced yarn which is both a textured yarn and a plain yarn can have a "continuously" swirling characteristic.
- continuous swirling denotes a type of swirling that has no pronounced swirling points, in contrast to the known swirling, for which clearly visible nodes are characteristic at periodic intervals.
- the number of fluff also reaches a minimum of approximately 80 fluff per 100,000 m of yarn length and provides a drawing-free product image in a fabric.
- Fluff means broken filaments and / or thread elements protruding from the thread core.
- the fluff was measured using a TORAY measuring head, which works on the electro-optical principle.
- the test speed was 1000 m / min, the tested yarn length per variant 1.6 x 105 m.
- a polyester POY with a titer of nominally dtex 100 f 72 was used as the feed yarn.
- Closed 2-hole nozzles for example with an air duct diameter of 0.7 mm, are best suited as interlacing nozzles.
- other commercially available swirling nozzles can also be used, which ensure a constant pressure in the stressed area.
- the texturing was carried out at 500 m / min on an FK6-CF texturing machine from BARMAG AG.
- the intermingling increases continuously to 65 knots / m at an air pressure of 2.5 bar.
- the number of knots is far below that of a yarn normally intermingled at 2.5 bar, without the bobbin winding deteriorating.
- the swirling takes place in a known manner following the texturing before winding.
- a polyester POY with a titer of nominally dtex 167 f 36 octolobal was used as the original yarn by the method according to the invention.
- the test results are summarized in Table 2. The same tendencies can be seen in the bobbin winding behavior, the number of knots and the fabric image.
- the textured yarn produced by the method according to the invention results in a perfect fabric appearance of the fabric, since obviously only a sufficient dissolution of the applied swirling points occurs during the texturing process that the remaining swirling comes close to a so-called "continuous" swirling.
- An advantage of the quasi-continuous interlacing is above all the low drawing in the fabric with at the same time sufficient thread closure for perfect processing.
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Vorverwirbeln eines teilverstreckten Polyester-POY, Vorlagegarnes für den Streck-, den Texturier- und/oder den Strecktexturierprozess mittels einer Luftverwirbelungsdüse zur Herstellung eines Texturgarnes oder Glattgarnes für textile Flächengebilde sowie das nach dem Verfahren hergestellte Garn.The invention relates to a method for pre-intermingling a partially drawn polyester POY, original yarns for the drawing, texturing and / or drawing texturing process by means of an air intermingling nozzle for producing a textile yarn or plain yarn for textile fabrics and the yarn produced by the process.
Für einen problemlosen Spulenablauf bei der Weiterverarbeitung eines multifilen synthetischen Garnes ist ein ausreichender Fadenschluss erforderlich. Zur Erzeugung eines Fadenschlusses eines Multifilamentgarnes hatten sich das Zwirnen und Schlichten bewährt. Beide Verfahren erfordern jedoch einen erhöhten maschinen- und transporttechnischen Aufwand.Sufficient thread closure is required to ensure that bobbin runs smoothly when processing a multifilament synthetic yarn. Twisting and sizing had proven to be effective for creating a thread closure of a multifilament yarn. Both methods, however, require increased expenditure on machinery and transport technology.
Um einen brauchbaren Fadenschluss zu erzeugen, wurden auch aerodynamische Verfahren entwickelt, wobei das unter einer definierten Spannung stehende Garn mittels Druckluft aus einer Düse verwirbelt wird. Dieser Vorgang erfolgt im Anschluss an den Texturier- oder Streckprozess.In order to create a usable thread closure, aerodynamic processes have also been developed, in which the yarn under a defined tension is swirled out of a nozzle by means of compressed air. This process takes place after the texturing or stretching process.
Nach EP-A-0 137 088 ist ein Verwirbelungsverfahren bekannt, wonach ein unverstrecktes oder teilverstrecktes Vorlagegarn, für einen Falschdralltexturierprozess, bei einen Luftdruck von etwa 0,5 bar schwach verwirbelt wird, um den eigentlichen Texturierprozess durch zu intensive Verwirbelungspunkte in Form von Knoten nicht zu stören. Die im Vorlagegarn erzeugten Knoten müssen sich bei der Weiterverarbeitung der Garne wieder auflösen, um Störstellen zu vermeiden. Aufgabe des bekannten Verfahrens ist eine Reduktion von Fadenbrüchen, insbesondere bei feinfibrilligen Garnen. Im Anschluss an das Texturieren sind diese Garne dann erneut zu Verwirbeln, wobei der hier erzeugte Fadenschluss des Texturgarnes die gleiche Aufgabe wie bei den Vorlagegarn hat, nämlich die Verbesserung bzw. die Gewährleistung der Weiterverarbeitbarkeit. Die Verwirbelungsstellen nach dem bekannten Verfahren haben jedoch den Nachteil, dass sie die Gleichmässigkeit des Warenbildes vor allem bei feinen Titern stören. Es ist bisher nicht gelungen, für einen einwandfreien Spulenablauf ausreichend verwirbelte Texturgarne zu verweben, ohne dass diese ein unruhiges Warenbild abgeben.According to EP-A-0 137 088, a swirling process is known, according to which an undrawn or partially stretched original yarn, for a false twist texturing process, is swirled weakly at an air pressure of approximately 0.5 bar, in order to avoid the actual texturing process due to too intensive swirling points in the form of knots disturb. The knots created in the original yarn must dissolve again during the further processing of the yarns in order to avoid defects. The object of the known method is to reduce thread breaks, particularly in the case of fine-fibrillated yarns. After texturing, these are yarns then swirl again, whereby the thread closure of the textured yarn produced here has the same task as for the original yarn, namely the improvement or the guarantee of further processability. However, the swirling points according to the known method have the disadvantage that they disrupt the uniformity of the product image, especially in the case of fine titers. So far, it has not been possible to weave sufficiently interwoven textured yarns for a smooth bobbin run-off without giving up an uneasy product appearance.
Es ist aber auch ein Verfahren zum simultanen Strecktexturieren von teilverstreckten Polyamidgarnen bekannt, wobei vor dem Einlauf in die Texturierzone mittels einer Luftverwirbelungsdüse verwirbelt wird (FR-A-22 96 710). Die Verwirbelung erfolgt mit einem Luftdruck von wenigsten 2.5 bar, wobei 100-1000 Verwirbelungen/m, bevorzugt mehr als 300 Verwirbelungen, angestrebt werden. Eine starke Verwirbelung im Vorlagegarn hat jedoch den Nachteil, dass bei Polyester-POY die Knoten beim Texturieren nur noch unvollständig aufgelöst werden. Die Folge ist eine unzureichende Gleichmässigkeit der Kräuselung, die im Gewebe zu einer deutlichen Zeichnung führt.However, a method for the simultaneous stretch texturing of partially stretched polyamide yarns is also known, with swirling using an air swirling nozzle before entering the texturing zone (FR-A-22 96 710). The swirling takes place with an air pressure of at least 2.5 bar, 100-1000 swirls / m, preferably more than 300 swirls, being aimed for. A strong intermingling in the master yarn has the disadvantage, however, that with polyester POY the knots are only partially dissolved during texturing. The result is an insufficient uniformity of the crimp, which leads to a clear drawing in the tissue.
Aufgabe der Erfindung ist es, ein Verfahren zur Verfügung zu stellen, welches einen guten Fadenschluss in einen texturierten oder gestreckten Filamentgarn sicherstellt, bei der Weiterverarbeitung einen problemlosen Spulenablauf gewährleistet und ein möglichst zeichnungsfreies textiles Flächengebilde herzustellen ermöglicht.The object of the invention is to provide a method which ensures good thread closure in a textured or stretched filament yarn, ensures problem-free bobbin flow during further processing and enables a fabric which is as free of drawings as possible.
Die zur Lösung der Aufgabe dienende Erfindung ist dadurch gekennzeichnet, dass das Vorlagegarn bei einem Luftdruck von 0,5 bis 2,0 bar verwirbelt wird.The invention serving to achieve the object is characterized in that the feed yarn is swirled at an air pressure of 0.5 to 2.0 bar.
Es ist in überraschender Weise gelungen, die Intensität der Vorlagegarnverwirbelung so zu steigern, dass einerseits der Texturierprozess nicht gestört wird und dass anderereseits das Texturgarn den zur Weiterverarbeitung erforderlichen Fadenschluss ohne nochmalige Verwirbelung erhält. Gleiches gilt auch für bekannte Streckverfahren, bei denen die Vorlagegarne zu Glattgarnen verstreckt werden. Bei erfindungsgemässer Vorverwirbelung erfolgt die Verwirbelung vor dem Einlauf des Garnes in die Texturiereinrichtungen bei einem Luftdruck im Düsenkörper von 0,5 bis 2,0 bar.Surprisingly, it has been possible to increase the intensity of the interlacing of the master yarn in such a way that on the one hand the texturing process is not disturbed and on the other hand the textural yarn receives the thread closure required for further processing without repeated interlacing. The same also applies to known drawing processes in which the master yarns are drawn into plain yarns. In the pre-intermingling according to the invention, the intermingling takes place before the yarn enters the texturing device at an air pressure in the nozzle body of 0.5 to 2.0 bar.
Es ist vorteilhaft und überraschend, dass das vorverwirbelte Garn, welches sowohl ein Texturgarn als auch ein Glattgarn sein kann, eine "kontinuierlich" ausgebildete Verwirbelungscharakteristik aufweist. Mit der Bezeichnung "kontinuierliche" Verwirbelung wird eine Verwirbelungsart belegt, die keine ausgeprägten Verwirbelungsstellen aufweist, im Gegensatz zur bekannten Verwirbelung, für die in periodischen Abständen deutlich sichtbare Knoten charakteristisch sind.It is advantageous and surprising that the pre-interlaced yarn, which is both a textured yarn and a plain yarn can have a "continuously" swirling characteristic. The term "continuous" swirling denotes a type of swirling that has no pronounced swirling points, in contrast to the known swirling, for which clearly visible nodes are characteristic at periodic intervals.
Im bevorzugten Druckbereich erreicht auch die Flusenzahl ein Minimum von etwa 80 Flusen auf 100'000 m Garnlänge und liefert ein zeichnungsfreies Warenbild in einem Gewebe. Unter Flusen sind gebrochene Filamente und/oder aus dem Fadenkern herausragende Fadenelemente zu verstehen. Die Flusenmessung erfolgte mit einem Messkopf von TORAY, welcher nach dem elektro-optischen Prinzip arbeitet. Die Prüfgeschwindigkeit betrug 1000 m/min die geprüfte Garnlänge je Variante 1,6 x 10⁵ m.In the preferred printing range, the number of fluff also reaches a minimum of approximately 80 fluff per 100,000 m of yarn length and provides a drawing-free product image in a fabric. Fluff means broken filaments and / or thread elements protruding from the thread core. The fluff was measured using a TORAY measuring head, which works on the electro-optical principle. The test speed was 1000 m / min, the tested yarn length per variant 1.6 x 10⁵ m.
Die Erfindung soll anhand von Beispielen näher erläutert werden.The invention will be explained in more detail by means of examples.
Als Vorlagegarn diente ein Polyester-POY mit einem Titer von nominell dtex 100 f 72. Als Verwirbelungsdüsen sind geschlossene 2-Lochdüsen, beispielsweise mit einem Luftkanaldurchmesser von 0,7 mm, am besten geeignet. Es können jedoch auch andere handelsübliche Verwirbelungsdüsen verwendet werden, welche einen konstanten Druck im beanspruchten Bereich gewährleisten. Nach der Verwirbelung erfolgte die Texturierung bei 500 m/min auf einer FK6-CF-Texturiermaschine der Firma BARMAG AG.A polyester POY with a titer of nominally dtex 100 f 72 was used as the feed yarn. Closed 2-hole nozzles, for example with an air duct diameter of 0.7 mm, are best suited as interlacing nozzles. However, other commercially available swirling nozzles can also be used, which ensure a constant pressure in the stressed area. After the swirling, the texturing was carried out at 500 m / min on an FK6-CF texturing machine from BARMAG AG.
Pro Variante wurden 8 Spulen à 1,8 kg hergestellt. Die Versuchsergebnisse sind in der nachfolgenden Tabelle zusammengestellt.8 coils of 1.8 kg each were produced for each variant. The test results are summarized in the table below.
In den Tabellen bedeutet: 
Die Verwirbelung nimmt, ausgehend von einem Basiswert von 21 Knoten/m bei einem ohne Verwirbelungseinrichtung texturierten Garn kontinuierlich auf 65 Knoten/m bei einem Luftdruck von 2,5 bar zu. Es ist für die Weiterverarbeitung wesentlich und überraschend, dass die Knotenzahl gegenüber einem bei 2,5 bar normal verwirbelten Garn weit unterschritten wird, ohne dass sich der Spulenablauf verschlechtert. Bei der als normalverwirbelt bezeichneten Variante erfolgt die Verwirbelung in bekannter Weise im Anschluss an das Texturieren vor der Aufwicklung.Starting from a base value of 21 knots / m for a yarn textured without a swirling device, the intermingling increases continuously to 65 knots / m at an air pressure of 2.5 bar. For further processing, it is essential and surprising that the number of knots is far below that of a yarn normally intermingled at 2.5 bar, without the bobbin winding deteriorating. In the variant referred to as normally swirled, the swirling takes place in a known manner following the texturing before winding.
Als Vorlagegarn diente ein Polyester-POY mit einem Titer von nominell dtex 167 f 36 octolobal nach dem erfindungsgemässen Verfahren verarbeitet. Die Prüfresultate sind in Tabelle 2 zusammengefasst. Es zeigen sich die gleichen Tendenzen im Spulenablaufverhalten, der Knotenanzahl und dem Gewebebild.
Das nach dem erfindungsgemässen Verfahren hergestellte Textur-Garn ergibt ein einwandfreies Warenbild des Gewebes, da offensichtlich beim Texturierprozess nur eine so weitgehende Auflösung der aufgebrachten Verwirbelungspunkte auftritt, dass die verbleibende Restverwirbelung einer sogenannten "kontinuierlichen" Verwirbelung nahe kommt. Ein Vorteil der quasi kontinuierlichen Verwirbelung ist vor allem die geringe Zeichnung im Gewebe bei einem gleichzeitig, für eine einwandfreie Verarbeitung, genügendem Fadenschluss.The textured yarn produced by the method according to the invention results in a perfect fabric appearance of the fabric, since obviously only a sufficient dissolution of the applied swirling points occurs during the texturing process that the remaining swirling comes close to a so-called "continuous" swirling. An advantage of the quasi-continuous interlacing is above all the low drawing in the fabric with at the same time sufficient thread closure for perfect processing.
Claims (2)
- A process for pre-entangling an partially drawn polyester-POY feed yarn for the drawing, the texturing and/or the draw-texturing process by means of an air entanglement jet for the production of a textured or flat yarn for textile sheetlike structures, characterized in that the entangling takes place under an air pressure of 0.5 to 2.0 bar.
- A air-entangled yarn form a polyester-POY, characterized in that the textured yarn, has fewer than 85 snarls per 100.000 m of yarn and fewer than 51 knobs per metre.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH2723/87 | 1987-07-17 | ||
| CH272387 | 1987-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0323986A1 EP0323986A1 (en) | 1989-07-19 |
| EP0323986B1 true EP0323986B1 (en) | 1993-03-10 |
Family
ID=4240156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19880905648 Revoked EP0323986B1 (en) | 1987-07-17 | 1988-07-08 | Process for pre-entangling a synthetic multifilament feed yarn and yarn so produce |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0323986B1 (en) |
| JP (1) | JPH02500375A (en) |
| BR (1) | BR8807133A (en) |
| CA (1) | CA1313753C (en) |
| DE (1) | DE3879156D1 (en) |
| WO (1) | WO1989000620A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4324752C2 (en) * | 1993-07-23 | 1996-08-22 | Hoechst Ag | Multi-filament flat yarn with low tendency to open and good thread closure, process for the production of multi-filament flat yarn and its use |
| TWI294926B (en) * | 2002-04-25 | 2008-03-21 | Teijin Fibers Ltd | Polyester fine false twisting textured yarn, and methods for producing the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2500229B2 (en) * | 1975-01-04 | 1978-01-19 | Bayer Ag, 5090 Leverkusen | PROCESS FOR SIMULTANEOUS DRAW TEXTURING OF SYNTHETIC YARN |
| EP0150301A2 (en) * | 1983-12-01 | 1985-08-07 | b a r m a g Barmer Maschinenfabrik Aktiengesellschaft | Apparatus for drawing bundles of synthetic yarns |
| EP0223301B1 (en) * | 1985-11-20 | 1990-01-31 | Viscosuisse Sa | Method for producing a weft thread from poy polyester |
-
1988
- 1988-07-08 EP EP19880905648 patent/EP0323986B1/en not_active Revoked
- 1988-07-08 BR BR888807133A patent/BR8807133A/en not_active Application Discontinuation
- 1988-07-08 WO PCT/CH1988/000121 patent/WO1989000620A1/en not_active Application Discontinuation
- 1988-07-08 JP JP50549288A patent/JPH02500375A/en active Pending
- 1988-07-08 DE DE8888905648T patent/DE3879156D1/en not_active Revoked
- 1988-07-15 CA CA000572098A patent/CA1313753C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| BR8807133A (en) | 1989-10-31 |
| CA1313753C (en) | 1993-02-23 |
| DE3879156D1 (en) | 1993-04-15 |
| WO1989000620A1 (en) | 1989-01-26 |
| JPH02500375A (en) | 1990-02-08 |
| EP0323986A1 (en) | 1989-07-19 |
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