EP0126055B1 - Teilorientierter Nylonfaden und Verfahren zur Herstellung desselben - Google Patents

Teilorientierter Nylonfaden und Verfahren zur Herstellung desselben Download PDF

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Publication number
EP0126055B1
EP0126055B1 EP84870055A EP84870055A EP0126055B1 EP 0126055 B1 EP0126055 B1 EP 0126055B1 EP 84870055 A EP84870055 A EP 84870055A EP 84870055 A EP84870055 A EP 84870055A EP 0126055 B1 EP0126055 B1 EP 0126055B1
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EP
European Patent Office
Prior art keywords
yarn
denier
yarns
texturing
textured
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Expired
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EP84870055A
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English (en)
French (fr)
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EP0126055A2 (de
EP0126055A3 (en
Inventor
John Maurer Chamberlin
Edward William Chilvers, Jr.
Walter John Nunning
John Hoyle Southern
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Solutia Inc
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Monsanto Co
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Priority claimed from US06/594,522 external-priority patent/US4583357A/en
Application filed by Monsanto Co filed Critical Monsanto Co
Priority to AT84870055T priority Critical patent/ATE55425T1/de
Publication of EP0126055A2 publication Critical patent/EP0126055A2/de
Publication of EP0126055A3 publication Critical patent/EP0126055A3/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
    • 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
    • D01D5/12—Stretch-spinning methods
    • 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

Definitions

  • ylon 66 shall mean those synthetic linear polyamides containing in the polymer molecule at least 85% by weight of recurring structural units of the formula
  • Friction-twist permits considerably higher texturing speeds than pin-twisting, with yarn speeds currently at about 700-900 m/mm. Such high texturing speeds are more economical than those attained by the pin-twist process.
  • PON feeder yarns for false-twist texturing have had relative viscosities (R.V.'s) in the range from the middle or upper thirties to the low forties, as indicated by US ⁇ A ⁇ 3,994,121. Such yarns have more than adequate tenacity for conventional apparel end uses.
  • R.V. relative viscosities
  • High RV polymer is therefore ordinarily not used unless required for some special purpose, such as when high yarn tenacity is required.
  • the present invention comprises a multifilament nylon 66 yarn spun at a spinning speed greater than 2200 m/min, said yarn being wound on a package at a winding tension less than 0.4 g. per denier (0.35cN/ dTex), preferably between 0.03 and 0.25 g. per denier (0.026-0.22cN/dTex), and having a denier between 15 and 250 (1.67-27.78 Tex), preferably between 35 and 140 (3.89-15.56 Tex), and an elongation between 55 and 150%, preferably between 55% and 100%, characterized by having a relative viscosity (R.V. according to ASTM D 789-81, 90% formic acid) greater than 53.
  • R.V. relative viscosity
  • the invention also comprises a friction-false-twist heatset textured nylon 66 yarn having an R.V. greater than 53, preferably greater than 60, and less than 10 broken filaments per kilogram of yarn visible on exposed end surfaces of a package of the yarn.
  • Yarns according to the invention have improved processability and permit manufacture of friction-twist yarns having increased crimp development, in some cases comparable to that of pin-twist yarns.
  • These yarns are generally characterized by a normalized SAXS peak intensity and a normalized lamellar dimensional product in each instance of at least 1.3, and preferably at least 1.75. While the mechanism or reason for the improved results of the present invention are not entirely understood, the increased values of normalized SAXS peak intensity and normalized lamellar dimensional product are distinctive as compared to conventional PON yarn, and the crystalline structure which results in yarns having these characteristic properties is believed to contribute to the improved results of the present invention.
  • the normalized SAXS peak intensity in particular may be interpreted as indicating relatively more relaxed amorphous regions and relatively more highly developed crystalline regions in the yarns of this invention as compared to conventional PON yarn.
  • the yarns of this invention are characterized by a relative viscosity (RV) greater than 53 and an elongation between 55 and 150%. Yarns having an RV of greater than 60 are more preferred and provide even better properties. Yarns of these RV's provide the processing characteristics discussed above, when prepared by spinning at speeds of 2200 m/min. or higher.
  • RV relative viscosity
  • the yarns of this invention may be marketed in conventional yarn packages which contain yarn at a winding tension less than about 0.4 grams per denier (0.35cN/dTex). Indeed, the yarns of this invention can be wound directly on stable packages without subjecting the yarn to the conventional PON heat treatment provided that the winding speed is adequate.
  • the yarns have such good processability that they can provide less than 10 frays per kilogram of textured yarn when tested for processability at a draw texturing stress of 0.45, (preferably 0.47)g/den or, in the case of the most preferred yarns of this invention, when tested at a draw-texturing stress of 0.48 g./den (0.39, 0.41, and 0.42cN/dTex respectively).
  • initial crimp development values greater than 19% are preferred, with values of greater than 21% and particularly greater than 24% being especially preferred.
  • the increased crimp development of the yarns of this invention is, of course, a significant benefit.
  • Increased crimp development provides a substantial increase in fabric covering power as compared to fabrics made from friction-twist yarns derived from conventional PON feeder yarns.
  • Such increased covering power is apparent not only by visual inspection but also by reduced air permeability.
  • less textured yarn is required to provide a fabric of equivalent covering power, thereby offering the potential of economic savings to the fabric manufacturer.
  • Increased productivity in spinning and texturing, as provided by the practice of this invention also offers the potential of substantial economic savings to the yarn manufacturer and to the throwster.
  • the feed yarn of the invention can be produced by a process comprising extruding at a given rate a plurality of molten streams of nylon 66 polymer through spinneret capillaries, quenching the streams into filaments, withdrawing the filaments from the streams at a given spinning speed above 2200 and preferably less than 5000 meters per minute, merging the filaments into a yarn, and winding the yarn on a package, preferably in the absence of a heating step, at a winding tension less than 0.4 grams per denier (0.35cN/dTex), the rate, the polymer, the capillaries and the spinning speed being selected such that the yarn forms a stable package and the yarn on the package has a denier between 15 and 250 (1.67-27.78 Tex), an elongation-to-break between 55% and 150%, and an RV greater than 53.
  • the winding tension is preferably between 0.03 and 0.25 grams per denier (0.026-2.2cN/dTex), with yarn RV's greater than 60 being particularly advantageous
  • a textured nylon 66 yarn according to the invention can be provided by a texturing process wherein a nylon 66 feed yarn according to the invention is withdrawn from a support package and simultaneously drawn and false-twisted while passing sequentially over a heater and through a false-twisting device and wound on a package at a winding speed greater than 450 meters per minute.
  • molten streams 20 of nylon 66 polymer are extruded through capillaries in spinneret 22 downwardly into quench zone 24 supplied with transversely directed quenching air at room temperature.
  • Streams 20 solidify into filaments 26 at some distance below the spinneret within the quench zone.
  • Filaments 26 are converged to form yarn 28 and pass through interfloor conditioner tube 30.
  • a conventional spin-finish is applied to yarn 28 by finish roll 32.
  • Yarn 28 next passes in partial wraps about godets 34 and 36 and is wound on package 38.
  • the filaments may be entangled if desired, as by pneumatic tangle chamber 40.
  • godets 34 and 36 perform the functions of withdrawing filaments 26 from streams 20 at a spinning speed determined by the peripheral speed of godet 34, and of reducing the tension in yarn 28 from the rather high level just prior to godet 34 to an acceptable level for winding onto package 38.
  • Winding tensions less than 0.4 grams per denier (0.35 cN/dTex) are essential in order to produce the PON yarn package of the present invention, particularly in commercially acceptable package sizes.
  • the range of 0.03 to 0.25 grams per denier (0.026-0.22cN/dTex) is preferred, with tensions of about 0.1 grams per denier (0.09cN/dTex) being particularly preferred.
  • Godets 34 and 36 may be dispensed with if the yarn winding tension immediately prior to the winder in the absence of the godets is within the yarn tension ranges indicated in this paragraph.
  • Winding tension means the yarn tension as measured just prior to the yarn traversing and winding mechanism.
  • Some commercially available winders include an auxiliary roll designed to both assist in yarn traversing and to permit reducing the yarn tension as the yarn is wound onto the bobbin or package. Such winders may be of assistance when using the upper portions of the yarn tension ranges indicated in this paragraph.
  • Nylon 66 reference polymer as defined below having an R.V. of 39 ⁇ 40 has its moisture content adjusted such that when spun at a melt temperature of 285°C as in this example, the yarn has a yarn RV of 40.
  • Spinneret 22 contains 34 capillaries having lengths of 0.012" (0.3 mm.) and diameters of 0.009" (0.229 mm.)
  • Quench zone 24 is 35 inches in height, and is supplied with 20°C. quench air having an average horizontal velocity of 1 foot (30.5 cm.) per second. Filaments 26 are converged into yarn 28 approximately 36 inches (91.4 cm.) below the spinneret.
  • Conditioner tube 30 is 72 inches (183 cm.) long and is of the type disclosed in US-A-4,181,697, i.e., a steamless tube heated to 120°C. through which yarn 28 passes.
  • the speed of godets 34 and 36 are 3500 meters per minute and 3535 meters per minute, respectively, to prevent the yarn from wrapping on godet 36.
  • the polymer metering rate is selected such that the yarn wound has a denier of 98 (10.9 Tex).
  • the winder used is the Toray 601, and the winder speed is adjusted to provide a winding tension of 0.1 grams per denier (0.09cN/dTex).
  • the yarn has an elongation-to-break of 83%, an RV of 40, and a normalized SAXS peak intensity of 1.0 and a normalized lamellar dimensional product of 1.0 (by definition).
  • the spun yarn is then simultaneously drawn and friction-twist textured on a Barmag FK6-L900 texturing machine using a 2-1/2 meter primary heater and a Barmag disc-aggregate with Kyocera ceramic discs in a draw zone between a feed and a draw or mid roll.
  • the heater temperature is 225°C.
  • the ratio of the peripheral speed of the discs to draw roll speed (the D/Y ratio) is 1.95.
  • the draw roll speed is set at 750 meters per minute, and the feed roll speed is adjusted to some lower speed to control the draw ratio and hence the draw-texturing stress or tension (the yarn tension between the exit of the heater and the aggregate).
  • the draw ratio is changed by adjustment of the feed roll speed so that the draw-texturing tension is high enough for stability in the false twist zone and yet low enough that the filaments are not broken, this being the operable texturing tension range.
  • the "maximum texturing tension” is defined as the tension producing the maximum initial crimp development without an unacceptable level of broken filaments (frays). More than 10 broken feilaments per kilogram of yarn are unacceptable in commercial use.
  • the operable texturing tension range is quite narrow when draw-texturing at 750 meters per minute and with a heater temperature of 225°C.
  • the maximum texturing tension is found to be about 0.43 grams per draw roll denier (0.38cN/dTex), and the initial crimp development is about 17-18%.
  • the draw roll denier is defined as the spun yarn denier divided by the mechanical draw ratio provided by the different surface speeds of the feed roll feeding the yarn to the heater and of the draw or mid roll just downstream of the falst-twist device.
  • the textured yarn denier is 70 and the yarn R.V. is 39. As is usual, the textured yarn R.V. is somewhat lower than the feed yarn R.V.
  • Table 1 illustrates the hitherto unrecognized regime of high spinning speeds in combination with high RV polymer.
  • the general process of Example 1 above is repeated, except that steam is admitted to the yarn passage through conditioner tube 30, and the yarn denier and spinning speed are varied as indicated in Table 1.
  • the polymer metering pump speed is maintained constant so that the yarn denier varies inversely with spinning speed. The results are shown in Table 1.
  • Example 1 The spinning process in Example 1 is repeated, except the polymer R.V. is increased to 46 and is dried to a very low moisture content.
  • the yarn has an R.V. of 55 and the elongation-to-break is increased to 95%.
  • the initial crimp development is about 21 %, but the textured denier is below the desired target level of 70 denier (7.8 Tex).
  • the spun yarn has an elongation-to-break of 103%, a normalized SAXS peak intensity of about 1.49, a normalized lamellar dimensional product of about 2.4, and an R.V. of 55.
  • Example 3 The spinning process of the first paragraph of Example 1 is repeated, except the polymer R.V. is increased to 79.
  • the yarn has a still further increased elongation-to-break of 105% and an R.V. of 80.
  • the textured yarn denier is below the target level of 70 denier (7.8 Tex) when the spun yarn is textured at its maximum texturing tension, although the initial crimp development is about 25%.
  • the further increase in yarn R.V. permits a still further increase in productivity by either increasing spinning speed or by increasing spun denier. Accordingly, the spinning process of this example is repeated, increasing the polymer metering rate to provide a spun yarn denier of 110.
  • the spun yarn has an elongation-to-break of 110%, a normalized SAXS peak intensity of about 1.85, a normalized lamellar dimensional product of about 2.3, and the yarn R.V. is 80.
  • the spun yarn of this paragraph is draw-textured as in Example 3 (245°C.
  • Example 3 its maximum texturing tension is found to be 0.54 grams per draw roll denier (0.47cN/dTex) and the operable range of yarn tensions in the false-twist zone is even broader than in the case of Example 3 above.
  • the textured yarn has an initial crimp development of about 25.5%, which is comparable to the levels achieved by the pin-twist process.
  • the textured yarn R.V. is 73 and its normalized SAXS peak intensity is greater than 1.3. Finished fabrics formed from the textured yarn of this example have still greater covering power than similar fabrics formed from the textured yarn of Example 3.
  • PON yarns according to the invention are therefore expected to be even more suited than the Example 1 yarn for still higher draw-texturing speeds than 750 meters per minute.
  • a series of yarns is spun at 3500 m/min and draw-textured as set forth in Table 2 below.
  • the resulting textured yarns are plied and knit into jersey fabrics which are conventionally finished.
  • the finished fabrics are characterized in Table 2.
  • the finished fabrics from items 2-4 in Table 2 above exhibit increased covering power as compared to the fabric made from control item 1. This is apparent not only visually, but also as measured by the progressively reduced air permeability of fabric items 2-4 as compared to fabric item 1.
  • Preliminary indications are that the improved properties attained with nylon 66 occur to a lesser degree with increased RV nylon 6.
  • a batch of nylon 6 polymer flake is dried and spun as 34 filament yarn at 3500 MPM as indicated in Table 3 using the steamless hot tube as in Example 1, then textured as indicated in Table 4, with resulting textured yarn properties as indicated in Table 5.
  • a further batch of nylon 6 polymer is divided and dried to different moisture levels, then spun as 34 filament yarns at 3500 MPM with the conditioner tube heated to 130°C to provide the yarns in Table 6.
  • the Table 6 spun yarns are drawtextured at 750 MPM over a 2.5 meter heater at 195°C, with conditions and textured yarn properties given in Table 7.
  • PON yarns can be successfully spun and wound onto stable packages without subjecting the yarn to any form of heat prior to winding, providing that the spinning speed is sufficiently high for the yarn RV.
  • the 55 R.V. yarn of Example 3 above can be successfully spun without a heating step and wound at 4000 meters per minute, as can the 80 R.V. yarn of Example 4 at 3500 meters per minute.
  • the minimum spinning speed required for a given yarn RV is expected to vary with filament denier, and can readily be determined by experiment.
  • RV yarn having 116 denier and 34 filaments is spun without godets and without heat prior to winding at 3500 MPM using the Barmag SW4SLD winder, which winder includes the auxiliary roll (noted above) designed to both assist in yarn traversing and to permit reducing the yarn tension as the yarn is wound onto the package.
  • Spinning performance is as good as or better than with heat applied in the conditioner tube.
  • Spin finish is applied just above and just below the unheated conditioner tube.
  • the spun yarn has an elongation of 113%, and draw-texturing performance at a draw roll (mid roll) speed of about 875 MPM and the resulting textured yarn properties are at least as good as for a yarn similarly spun using a dry heated conditioner tube and similarly textured.
  • All yarn packages to be tested are conditioned at 21 degrees C. and 65% relative humidity for one day prior to testing.
  • the yarn elongation-to-break (elongation) is measured one week after spinning. Fifty yards of yarn are stripped from the bobbin and discarded. Elongation-to-break is determined using an Instron tensile testing instrument. The gage length (initial length) of yarn sample between clamps on the instrument) is 25 cm, and the crosshead speed is 30 cm per minute. The yarn is extended until it breaks. Elongation-to-break is defined as the increase in sample length at the time of maximum load or force (stress) applied, expressed as a percentage of the original gage length (25 cm).
  • Crimp development is measured as follows. Yarn is wound at a positive tension less than 2 grams on a Suter denier reel or equivalent to provide a 1-1/8 meter circumference skein. The number of reel revolutions is determined by 2840/yarn denier, to the nearest revolution. This provides a skein of approximately 5680 skein denier and an initial skein length of 9/16 meter. A 14.2 gram weight or load is suspended from the skein, and the loaded skein is placed in a forced-air oven maintained at 180°C. for 5 minutes.
  • the skein is then removed from the oven and conditioned for 1 minute at room temperature with the 14.2 gram weight still suspended from the skein, at which time the skein length L 2 is measured to the nearest 0.1 cm.
  • the 14.2 gram weight is then replaced with a 650 gram weight.
  • the skein length L 3 is measured to the nearest 0.1 cm.
  • Percentage crimp development is defined as L 3 -L 2 /L 3X lOO- Crimp development decreases with time as the textured yarn ages on the bobbin, rapidly for the first hours and days, then more slowly. When "initial crimp development" is specified herein, the measurement is made about one day after texturing.
  • the yarn is tested for processability as follows.
  • the spun yarn is simultaneously drawn and friction-twist textured on a Barmag FK6-L900 texturing machine having a 2.5 meter heater between the feed roll and the draw roll.
  • a Barmag type 6 aggregate with Kyocera "D" profile 6 mm thickx50 mm diameter ceramic working discs is mounted in the texturing zone between the heater and the draw or mid roll.
  • the discs are arranged 0-9-1 on each of the three aggregate shafts from inlet end to outlet end (no inlet guide disc, 9 Kyocera working discs, 1 outlet chromium plated guide disc).
  • the three shafts are parallel and spaced 37.5 mm apart to form an equilateral triangle.
  • the interleaved discs are axially spaced 0.75 mm apart from the adjacent discs on the adjoining shafts.
  • the heater temperature is 230°C.
  • the ratio of the peripheral speed of the discs to draw roll speed (the D/Y ratio) is 1.953.
  • the draw roll speed is set at 800 meters per minute, and the feed roll speed is adjusted to a lower speed selected to provide a specified draw-texturing stress.
  • the textured yarn is wound at a winding speed of 758 meters per minute. Broken filaments (frays) are determined visually, by counting the number of broken filaments on the exposed end surfaces of the package. More than 10 frays per kilogram of textured yarn are unacceptable.
  • Relative viscosity is determined by ASTM D789-81, using 90% formic acid.
  • the reference polymer is nylon-66 formed from stoichiometric amounts of hexamethylene diamine and adipic acid, further containing as the sole additives 44 parts per million manganese hypophosphite monohydrate, 898 parts per million acetic acid as a molecular weight stabilizer and 3000 parts per million titanium dioxide pigment. Polymerization is conventional, to provide a nominal polymer R.V. of 38 ⁇ 40.
  • the reference yarn is prepared by appropriately adjusting the moisture level in the reference polymer, then spinning under the same spinning conditions as the yarn being tested was made to provide a 40 RV reference yarn having the same denier and denier per filament as the yarn sample being tested.
  • the X-ray diffraction patterns are recorded on NS54T Kodak no-screen medical X-ray film using evacuated flat plate Laue cameras (Statton type). Specimen to film distance is 32.0 cm.; incident beam collimator length is 3.0 inches, exposure time is 8 hours.
  • Interchangeable Statton type yarn holders with 0.5 mm. diameter pinholes and 0.5 mm. yarn sheath thickness are used throughout as well as 0.5 mm. entrance pinholes. The filaments of each sheath of yarn are aligned parallel to one another and perpendicular to the x-ray beam.
  • a single film is used in the film cassette.
  • This film is evaluated on a scanning P-1000 Obtronics Densitometer for information concerning scattering intensity and discrete scattering distribution characteristics in the equatorial and meridional directions.
  • a curve fitting procedure using Pearson VII functions [see H. M. Heuvel and R. Huisman, J. Appl. Poly. Sci., 22, 2229-2243 (1978)] together with a second order polynomial background function, is used to fit the experimental data prior to calculation.
  • a meridional scan is performed, the discrete scattering fitted, equatorial scans are performed through each discrete scattering maxima and then again the data is fitted via a parameter fit procedure.
  • the peak height intensity is taken as an average of the four fitted intensity distributions (i.e., the two mirrored discrete scattering distributions in the meridional directions and the two equatorial distributions through these meridional maxima).
  • the normalized SAXS peak intensity is then simply the ratio of the measured peak intensity to that of the measured peak intensity of a 40 RV yarn sample of the same denier and denier per filament spun from the reference polymer under the same conditions as the yarn sample.
  • the SAXS discrete scattering x-ray diffraction maxima are used to determine the average lamellar dimensions. In the meridional direction this is taken here to be the average size of the lamellar scatterer in the fiber direction and in the equatorial direction, the average size of the lamellar scattered in a direction perpendicular to the fiber direction. These sizes are estimated from the breadth of the diffraction maxima using Scherrer's method,
  • K is the shape factor depending on the way (3 is determined, as discussed below, ⁇ is the x-ray wave length, in this case 1.5418A, 8 is the Bragg angle, and ⁇ the spot width of the discrete scattering in radians.
  • the Scherrer equation is again used to calculate the size of the lamellar scattered in the equatorial direction through the discrete scattering maxima, where
  • the lamellar dimensional product is given then by and the normalized lamellar dimensional product is then simply the ratio of the lamellar dimensional product to that of a 40 RV yarn sample of the same denier and denier per filament spun from the reference polymer under the same conditions as the yarn sample.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)

Claims (9)

1. Multifilnylon 66-Garn, gesponnen bei einer Spinngeschwindigkeit von höher als 2200 m/min, welches Garf auf eine Packung bei einer Spulspannung von weniger als 0,4 g/den (0,35 cN/dTex) gespult ist und eine Denierzahl von 15 bis 250 (1,67 bis 27,78 Tex) und eine Dehnung zwischen 55 und 150% aufweist, dadurch gekennzeichnet, daß es eine relative Viskosität (RV gemäß ASTM D789-81, 90 %ige Ameisensäure) von mehr als 53 besitzt.
2. Garn nach Anspruch 1 mit einer RV von höher als 60.
3. Garn nach Anspruch 1 oder 2, worin die Spulspannung 0,03 bis 0,25 g/den (0,026 bis 0,221 cN/dTex) beträgt.
4. Garn nach einem der vorhergehenden Ansprüche, wobei das Garn eine normalisierte SAXS-Peakintensität (Testverfahren in der Beschreibung beschrieben) von höher als 1,3 und ein normalisiertes Lamellardimensionsprodukt (Testverfahren in der Beschreibung beschrieben) von höher als 1,3 aufweist.
5. Garn nach Anspruch 4 mit einer normalisierten SAXS-Peakintensität von höher als 1,75 und einem normalisierten Lamellardimensionsprodukt von höher als 1,75.
6. Verfahren zum Friktionsfalschdraht-Texturieren eines Garns nach einem der vorhergehenden Ansprüche.
7. Heißfixiertes friktionsfalschdraht-texturiertes Nylon 66-Garn, erhalten aus einem Garn nach einem der Ansprüche 1 bis 5 mit weniger als 10 gebrochenen Filamenten pro kg Garn, sichtbar an den exponierten Endoberflächen einer Packung des Garns.
8. Garn nach Anspruch 7 mit einer RV von höher als 60.
9. Garn nach Anspruch 7 oder 8 mit einer Anfangskräuselausbildung (Testverfahren in der Beschreibung beschrieben) von höher als 21 %.
EP84870055A 1983-04-25 1984-04-24 Teilorientierter Nylonfaden und Verfahren zur Herstellung desselben Expired EP0126055B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84870055T ATE55425T1 (de) 1983-04-25 1984-04-24 Teilorientierter nylonfaden und verfahren zur herstellung desselben.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US48849083A 1983-04-25 1983-04-25
US488490 1983-04-25
US54612783A 1983-10-27 1983-10-27
US55402183A 1983-11-21 1983-11-21
US554021 1983-11-21
US06/594,522 US4583357A (en) 1983-11-21 1984-04-02 Partially oriented nylon yarn and process
US594522 1984-04-02
US546127 1990-06-28

Publications (3)

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EP0126055A2 EP0126055A2 (de) 1984-11-21
EP0126055A3 EP0126055A3 (en) 1987-06-16
EP0126055B1 true EP0126055B1 (de) 1990-08-08

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AU (1) AU2722384A (de)
BR (1) BR8401901A (de)
CA (1) CA1227310A (de)
DE (1) DE3482906D1 (de)
ES (1) ES8707571A1 (de)
IL (1) IL71623A0 (de)

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IL77563A (en) * 1985-01-11 1990-01-18 Monsanto Co Partially oriented nylon yarn and process
GB8915736D0 (en) * 1989-07-10 1989-08-31 Du Pont Improvements to multifilament apparel yarns of nylon
TR28316A (tr) * 1990-08-03 1996-04-09 Du Pont Naylondan yapilmis cok filamentli giyim esyasi ipliklerinde gelistirmeler.

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Publication number Priority date Publication date Assignee Title
AR204352A1 (es) * 1974-04-03 1975-12-22 Du Pont Hilo polihexametilenadipamida sin estirar vaporizado y procedimiento para su obtencion
US4181697A (en) * 1975-04-05 1980-01-01 Zimmer Aktiengessellschaft Process for high-speed spinning of polyamides
US4228120A (en) * 1978-04-21 1980-10-14 Monsanto Company Process for nylon 66 yarn having a soft hand
GB2098536B (en) * 1981-05-18 1984-10-10 Davy Mckee Ag High speed spin-drawn fibres

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ES531829A0 (es) 1986-05-16
AU2722384A (en) 1984-11-01
CA1227310A (en) 1987-09-29
EP0126055A2 (de) 1984-11-21
IL71623A0 (en) 1984-07-31
DE3482906D1 (de) 1990-09-13
ES8707571A1 (es) 1986-05-16
EP0126055A3 (en) 1987-06-16
BR8401901A (pt) 1984-12-04

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