EP0179276A2 - Procédé de fabrication d'un fil fantaisie non volumineux - Google Patents

Procédé de fabrication d'un fil fantaisie non volumineux Download PDF

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Publication number
EP0179276A2
EP0179276A2 EP85111847A EP85111847A EP0179276A2 EP 0179276 A2 EP0179276 A2 EP 0179276A2 EP 85111847 A EP85111847 A EP 85111847A EP 85111847 A EP85111847 A EP 85111847A EP 0179276 A2 EP0179276 A2 EP 0179276A2
Authority
EP
European Patent Office
Prior art keywords
thread
effect
false
false twist
fancy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85111847A
Other languages
German (de)
English (en)
Other versions
EP0179276A3 (fr
Inventor
Karl-Hermann Hense
Nandor Kiss
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.)
AKZO PATENTE GmbH
Original Assignee
Akzo Patente GmbH
Akzo GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akzo Patente GmbH, Akzo GmbH filed Critical Akzo Patente GmbH
Publication of EP0179276A2 publication Critical patent/EP0179276A2/fr
Publication of EP0179276A3 publication Critical patent/EP0179276A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect 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
    • D02G1/02—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
    • D02G1/0206—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 by false-twisting
    • D02G1/024—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 by false-twisting with provision for imparting irregular effects to the yarn

Definitions

  • the invention relates to a method for producing a low-volume fancy yarn, which consists of a basic thread and a fancy thread and has alternately thin zones of different lengths and thickenings of different short lengths, the basic thread being fixed by false twists when twisting, and the fancy thread with delivery within False twist is freely fed to the basic thread perpendicularly or almost perpendicularly to the basic thread axis.
  • a method of the type mentioned above for producing a fancy yarn with a natural fiber character, that is to say a voluminous fancy yarn, is known from DE-OS 19 08 219.
  • a method for producing a low-volume fancy yarn is known from DE-AS 26 16 786, in which the fancy thread is fed to the basic thread via a thread guide located close to the basic thread, which can be moved back and forth parallel to the basic thread, behind the heating plate in the direction of the basic thread.
  • the fancy yarn produced with this process is when using non-textured yarns low volume.
  • this known method cannot prevent the basic thread from being bulky.
  • the object of the present invention is to provide a generic method for producing a fancy yarn, which is even lower in volume than the fancy yarn described in DE-AS 26 16 786.
  • This method should be designed in such a way that in order to achieve a low-volume fancy yarn, it is possible to dispense with the point where the thread and the base thread meet.
  • This object is achieved in a method according to the preamble in that the basic thread is simultaneously stretched according to its orientation in the false twist, that the effect thread is fed to the lower third of a long heating plate serving for fixation, and that a rotating false twist tube with diabolo is used for the false twist , wherein the inlet bore of the false twist tube has approximately the same diameter as the smallest diameter of the diabolo.
  • the terms “basic thread” and “effect thread” are to be understood as meaning multifilament yarns in the sense of the invention.
  • the term “thread” was only used to distinguish the effect partners from the fancy yarn produced from these effect partners.
  • the multifilament filaments can also be bicosatellite, side by side or core-sheath filaments.
  • the method according to the invention produces a low-volume fancy yarn from a basic thread and a fancy thread, in which thin zones of different lengths alternate with thickenings of different lengths.
  • the fancy thread is helically wrapped around the base thread in the thin zones of the fancy yarn, the filaments of the fancy yarn lying more next to each other than on top of each other.
  • the effect thread is wound back and forth several times in the thickened areas, the filaments of the individual layers being more adjacent to one another than one above the other.
  • the thin zones and the short thickenings are almost cylindrical and have a fixed character.
  • the effect thread visible from the outside forms a screw line with the same screwing direction, although the pitch and diameter of the base circle do not remain the same.
  • the transitions from thin zones to thickenings can have textured areas.
  • the basic thread is twisted slightly throughout and low in volume.
  • the length of the thin zones can be between 20 and 100 cm. However, the length of the thin zones is usually between 20 and 40 cm. The length of the thickening is about 10 to 30 cm, but is usually between 12 and 20 cm.
  • the basic thread is drawn according to its orientation in the false twist.
  • the basic thread material has different orientation and therefore also different residual stretchability or elongation at break, depending on the spinning speed with which it was spun, and then subsequent treatment In the finished yarn a certain lower elongation at break is desired, it is advantageous according to the invention to combine the drawing, which is still necessary to achieve the desired low elongation at break, with the false twist treatment of the method according to the invention.
  • a basic thread made of polyethylene terephthalate filaments spun at about 2,000 m / min is drawn with a ratio of 1: 1.95 during false twisting in order to obtain a fancy yarn with about 26% elongation at break.
  • the thread tension S before the false twist tube is 0.5 to 1.2 cN / tex and the thread tension S 2 after the false twist tube is between 3 and 5 cN / tex.
  • the fixation in the false twist area takes place via a long heating plate with a length of at least 0.5 m.
  • the temperature of the heating plates lies at the temperatures customary for the respective yarns during false twist texturing.
  • the heater temperature is, for example, above 200 ° C., preferably from 215 to 230 ° C.
  • a false twist tube with a diabolo is required as a false twist unit.
  • Diabolo in the sense of the present invention means those which on both sides of the part exposed in the false twist tube from the outside have a tapered inside diameter. Such a diabolo is shown, for example, in Melliand Textile Reports 1973, page 578 in Figure 1.
  • the length of the exposed portion of the diabolo is referred to as the notch length within the scope of this invention.
  • the diabolo has a diameter ratio of approximately 1.8: 1 with a notch length of 2.7 mm.
  • the basic thread has a greater strength than the effect thread. While the basic thread cannot yet be used fully drawn, the use of a fully drawn filament yarn, i.e. a filament yarn with low elongation at break (for example 25 to 30%) is an advantage. If filament yarns made of the same starting material, for example made of polyamide or polyethylene terephthalate, are used for the basic thread and the effect thread, the greater strength of the basic thread can be achieved in that the basic thread has a higher titer than the effect thread.
  • the process according to the invention is particularly successful if the fancy yarn is subjected to fixation after the false twist treatment and before winding up by heat treatment.
  • a heating plate can in turn be used for this.
  • the temperature of this heating plate is advantageously kept somewhat lower than that of the heating plate in the false twist section.
  • the basic thread and effect thread advantageously consist of smooth yarns. However, these yarns can also have a slight twist or texturing.
  • the delivery speed of the fancy thread should also be at least 1.3 times as fast as the take-off speed of the fancy yarn in the method according to the invention.
  • the delivery speed of the fancy thread is 1.4 to 1.8 times as fast as the take-off speed of the fancy yarn.
  • the point of impact of the effect thread moves up and down on the base thread in the manner described in DE-OS 19 08 219. It has been found according to the invention that a maximum distance between the reversal points of the up-and-migrating impact point between 20 and 70 cm is advantageous, and a distance of 40 to 60 cm is even more advantageous. This distance can be adjusted by varying the delivery speed of the fancy yarn and the distance of the last thread guide (thread guide or godet).
  • the distance of the last thread guide member can only be changed within a short distance due to the machine, so that a fixed distance of the last thread guide member is generally assumed and the distance between the reversal points is set via the delivery speed. Since irregular effects are desirably achieved with the method according to the invention, the reversal points are not equally far apart for every back and forth movement.
  • the fancy yarn can be produced excellently at take-off speeds of 60 to 120 m / min.
  • FIG. 1 schematically shows a device which is suitable for carrying out the method according to the invention.
  • the basic thread 2 a multifilament yarn, is drawn off from the cop 1 from the pair of godets 4 via a thread guide 3.
  • the transport speed of the pair of godets 4 for the basic thread 2 is lower than the take-off speed of the finished fancy yarn 21 by the draw ratio required according to the degree of orientation of the basic thread 2.
  • the basic thread 2 is fed to a long heating plate 7 via the thread guides 5 and 6.
  • the effect thread 9 which is drawn off from the cop 8 with the aid of a pair of godets 11 via a thread guide 10 and is fed to a thread guide 12, the last thread feed element for the effect thread, runs towards the basic thread.
  • the point of impact of the effect thread 9 on the basic thread 2 is not shown here, since this constantly changes its place.
  • the outermost points of the point of impact, which it occupies during the upward and downward movement, are indicated in FIG. 1 with 13 'and 13 ". Since the effect thread 9 between the last thread guide 12 and the two reversal points 13' and 13", respectively constantly moved back and forth in this area are drawn as dashed lines 12-13 'and 12-13 "as the outer boundaries of the thread course.
  • the dash-dotted line between these two dashed lines indicates that the effect thread 9 is vertical or almost vertical the basic thread 2 is fed to the basic thread axis in the lower third of the heating plate 7.
  • the transport speed of the fancy thread 9 in the area of the pair of godets 11 is 1.4 to 1.8 times as large as the take-off speed of the fancy yarn 21.
  • a pin 14 ensures that the fancy yarn 14 runs at the correct distance from the heater 7.
  • the fancy yarn 21 then runs through the inlet bore 17 of a false twist tube 15 with diabolo 16, which the fancy yarn 21 loops around once.
  • the fancy yarn After leaving the false twist tube 15, the fancy yarn is heat set on the heating plate 19. For this purpose, the fancy yarn 21 is kept at the correct distance from the heater via the two pins 18. The fancy yarn 21 is then wound onto the bobbin 20.
  • a multifilament yarn 180 dtx f 36, matt, profiled from polyethylene terephthalate, spun at a spinning speed of 2,000 m / min is used as the basic thread.
  • the effect thread is a multifilament yarn 50 dtex f 36, matt, profiled, which was already stretched to an elongation at break of about 26%.
  • the basic thread was drawn off the cop at a take-off speed of 46 m / min and fed to a 1.26 m long heating plate.
  • the effect thread was drawn off at a take-off speed of 144 m / min.
  • the last thread guide (12) was 0.9 m away from the heater, which had a temperature of 230 ° C.
  • the false twist tube had an inlet bore with an inner diameter of 1 mm.
  • the diabolo sitting in the false twist tube had a diameter ratio of 1.8: 1 with a notch length of about 2.7 mm.
  • the smallest diameter in the middle of the diabolo was 1 mm.
  • the false twist tube was kept at a speed of 170,000 l / min.
  • the fixing temperature of the second heater after the false twist tube was 215 ° C.
  • the take-off speed of the finished fancy yarn was 9 nm / min.
  • the resulting low-volume fancy yarn had an average of 1.2 effects / m.
  • the thread diameter in the thickenings was 130 to 150 ⁇ m, that of the thin zones 70 to 80 ⁇ m, the fancy yarn in the thin zones being wound helically around the base thread 6 to 9.
  • the fancy yarn had the following textile data:
  • FIG. 2 schematically shows a section of the thin zone of a yarn produced according to the invention.
  • the basic thread is designated 22 and the effect thread 23.
  • the effect thread in the lower and upper area has been omitted.
  • a thickening of a yarn produced according to the invention is shown schematically in FIG. Again, the basic thread is designated by 22, around which the effect thread 23 first winds downwards (23 '), then upwards 23 “and again downwards (23"'). The last The direction of screwing 23 ′′ of the effect thread 23 has the same direction of rotation as the direction of screwing of the effect thread in the thin zone (FIG. 2). Both in the thickenings and in the thin zones, the base thread 22 is rotated slightly and arranged with little volume.
EP85111847A 1984-10-23 1985-09-19 Procédé de fabrication d'un fil fantaisie non volumineux Withdrawn EP0179276A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3438743 1984-10-23
DE19843438743 DE3438743A1 (de) 1984-10-23 1984-10-23 Verfahren zum herstellen eines volumenarmen effektgarns

Publications (2)

Publication Number Publication Date
EP0179276A2 true EP0179276A2 (fr) 1986-04-30
EP0179276A3 EP0179276A3 (fr) 1989-05-31

Family

ID=6248540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111847A Withdrawn EP0179276A3 (fr) 1984-10-23 1985-09-19 Procédé de fabrication d'un fil fantaisie non volumineux

Country Status (2)

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EP (1) EP0179276A3 (fr)
DE (1) DE3438743A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1584716A1 (fr) * 2004-04-10 2005-10-12 Schärer Schweiter Mettler AG Procédé de traitement de fil et machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908219A1 (de) * 1969-02-19 1970-09-10 Kunstseiden Ag Verfahren zur Herstellung eines wolleaehnlichen Mischfadens
DE2616786B1 (de) * 1976-04-15 1976-12-23 Akzo Gmbh Effektgarn und verfahren zu seiner herstellung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2114471A5 (en) * 1970-11-13 1972-06-30 Scragg & Sons False twisting ferrule - with transversely journalled twist pin in upper end of ferrule
GB1441923A (en) * 1972-08-15 1976-07-07 Ici Ltd Variable knop yarns and methods for their manufacture
CH592755A5 (fr) * 1975-12-11 1977-11-15 Heberlein & Co Ag
FR2348988A1 (fr) * 1976-04-20 1977-11-18 Inst Textile De France Procede pour l'obtention d'un fil fantaisie et fil ainsi obtenu

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908219A1 (de) * 1969-02-19 1970-09-10 Kunstseiden Ag Verfahren zur Herstellung eines wolleaehnlichen Mischfadens
DE2616786B1 (de) * 1976-04-15 1976-12-23 Akzo Gmbh Effektgarn und verfahren zu seiner herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1584716A1 (fr) * 2004-04-10 2005-10-12 Schärer Schweiter Mettler AG Procédé de traitement de fil et machine

Also Published As

Publication number Publication date
DE3438743A1 (de) 1986-04-30
EP0179276A3 (fr) 1989-05-31
DE3438743C2 (fr) 1987-03-19

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