US2611928A - Method for producing high tenacity artificial yarn and cord - Google Patents

Method for producing high tenacity artificial yarn and cord Download PDF

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Publication number
US2611928A
US2611928A US61542A US6154248A US2611928A US 2611928 A US2611928 A US 2611928A US 61542 A US61542 A US 61542A US 6154248 A US6154248 A US 6154248A US 2611928 A US2611928 A US 2611928A
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US
United States
Prior art keywords
filaments
viscose
yarn
temperature
regeneration
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.)
Expired - Lifetime
Application number
US61542A
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English (en)
Inventor
Howard D Merion
Henry J Mcdermott
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 Nobel UK PLC
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American Viscose Corp
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
Priority to FR999054D priority Critical patent/FR999054A/fr
Priority to BE492102D priority patent/BE492102A/xx
Priority to NL73733D priority patent/NL73733C/xx
Application filed by American Viscose Corp filed Critical American Viscose Corp
Priority to US61542A priority patent/US2611928A/en
Priority to GB26234/49A priority patent/GB675675A/en
Priority to US245306A priority patent/US2611925A/en
Application granted granted Critical
Publication of US2611928A publication Critical patent/US2611928A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • 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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/27—Process of spinning viscose where viscose has high degree of polymerization

Definitions

  • This invention relates 'to'the production-of high tenacity artificial filamentary yarns and cord from regenerated cellulose by the viscose process, and has as its object animproved process adapted to produce yarns and cords having increased flexing life.
  • improved regenerated cellulose yarns and cords having high tenacity and long flexing life can be obtained by spinning a viscose having a temperature of at least 30 G. into a regenerating coagulating bath having a temperature of 40 to 7.5 C. or higher, stretching the partially regenerated filaments between 40 and 80%, washing out the acid while completing the regeneration of the filaments, relaxing, drying. and collecting by winding and/or twisting.
  • the viscose to bespun proceeds from the ripening and filtering equipment which is usually disposed in a separate room, commonly in a basemerit where a low room temperature from '18 to 22 C. may .be maintained. As such viscose proceeds through the lines to the spinning machine in the spinning rooms, it may absorb some heat and rise to a temperature of 25 to 28 C. by the time it reaches the spinnerets of the machine. In order to raise the temperature into the .range of at least 30 0., means is provided for heating a portion of the line through which the viscose passes on its way to the spinnerets.
  • heating means could be applied to a common system for feeding a number of machines in the spinning room, or to the header associated with each spinning machine, it is preferred for reasons statedhereinafter to provide a system of heating the individual supply lines leading to the spinnerets.
  • electric heating coils, high frequency electrostatic heating devices, or heating baths maybe applied to the viscose lines;
  • the individual supply line or rounder may comprise a tortuous channel made by bending a portion of its length into the form of a helical coil, and this rounder may be submerged in the spinning bath to.
  • the hot liquid can be circulated through the yarn-treating stage and the viscoseheating stage in succession .in either order.
  • asoft 'finish may be obtained by the application of sodium oleate, polyvinyl alcohol, ethylene oxide, modified sorbitan' dipalmitate, or compositions containing suchi'ingradients insuitable proportions. If .desired,fdesulfurization, bleaching, and such procedures may be applied with appropriateintermediate Such treatments should. precedethe washes. application of a softener when such softener desired .to be applied to the product. Depending upon the use to which theyarn obtained "isflhftended to be put, it may be collected with or without twist.
  • the salt test may be from 3 to 6 and the ball fall viscosity before heating may be from 40 to 200 seconds.
  • the spinning bath may 'contain'from '7 to 12% sulfuric-acid, 15 to 25% sodium'sulfate, and from 1 to 10% of the sulfate of 'zinc,'magnesium,'or iron, or a mixture r the latter sulfates.
  • the viscose preferably should havea tempera;- ture of 45 C. to C, 'andthe bath'a tempera-'- 'ture of 50 to c.- In thepre'ferred instance the. difference in temperature between theiivisl- 3 cose and spirming bath is not over 10 C. and the optimum difference is about C. to C.
  • the drawing illustrates a preferred embodiment of equipment in accordance with the present invention. As shown, the single figure represents a schematic view in perspective with parts in section.
  • the viscose is fed to the machine through a header 3 to which there are connected a number of branch outlets 4 connected to the individual spinning pumps 5 of positive displacement type, such as ordinary gear pumps.
  • the discharge lines 6 from the individual pump 5 lead to a candle filter 1 through a swivel joint la which allows swinging of the candle filter 1 and rounder 8 in a counterclockwise direction as viewed in the figure, to remove the spinneret 9 out of the coagulating bath contained within the receptacle I0, which may be a trough extending the length of the machine or individual recep- I tacles, one for each spinneret.
  • a feed pipe H serves to supply the coagulating bath to the receptacle l0 and an overflow pipe l2 displaced from H longitudinally of the machine serves to control the level of the bath in the trough i0 and assures circulation of the bath past the spinneret or spinnerets 9.
  • a receptacle I3 is provided alongside receptacle l0 and may be insulated therefrom by a layer 14 of material of low heat-conductivity. Like 40, the receptacle I3 may be individual for each rounder or it may be a trough running the length of the machine.
  • An overflow pipe 15 is provided for controlling the level of heated liquid in the container I3.
  • the rounder 8 is formed with a portion Ba thereof in the form of a helical coil to provide for heat transfer from the bath in container I3 to the viscose in the rounder 8 before it is fed to the spinneret 9.
  • Filaments passing from the coagulating bath in the receptacle i0 proceed upwardly to a thread-advancing device which may comprise a pair of canted rotors l6 and I! about which a predetermined number of wraps of the yarn are Wound to provide further regeneration prior to stretching.
  • the yarn leaves the upper rotor 16 and passes through container 18 for a hot aqueous liquid continuously supplied thereto from a pipe 19.
  • the aqueous medium may be hot water, hot dilute acids or salts, and may for example contain from 1 to 5% sulfuric acid, 1 to 3% sodium sulfate, and to 1 of zinc sulfate.
  • the overflow-pipe 26 in the container i8 discharges into the container '13 for heating the viscose in the tortuous channel 8a.
  • rotates at a peripheral speed from to 80% higher than the peripheral speed of rotors i6 and IT, to provide the stretch needed at this stage.
  • a washing liquid such as cold or hot water, cold or hot dilute acid or salt solutions, such as a solution containing from 0.1 .to 0.5% sulfuric acid, is supplied from a spray or shower head 22, and additional wash water may be sprayed on the reel by spraying head 22a, and the yarn departing from reel 2!
  • a thread-advancing device for drying comprising a pair of rotors 25 and 26 which are driven at a peripheral speed at the yarn-receiving portion somewhat less than the peripheral speed of discharge from reel 2!.
  • the surfaces of the rotors 25 and 26 may have intermediate tapered portions 21 and 28 respectively to allow further shrinkage of the thread during the drying as it reaches this portion of the device. This taper may amount to 3 to 10%.
  • the peripheral speed at the yarn-receiving end may be the same as the peripheral speed of the reel 2
  • may be suflicient to take care of all the shrinkage desired, in which case the drums 25 and 26 may be cylindrical throughout their length.
  • Example I A viscos containing 7.8% cellulose, 6.6% caustic, 36% carbon disulfide (CS2 based on the alpha cellulose content of the pulp) and having a salt point of 5 as determined with sodium chloride was spun into a bath containing 10% sulfuric acid, 4.5% zinc sulfate and 21 sodium sulfate at 50 C. to produce a 1650 denier, 980 filament yarn.
  • the rounder comprised a 7-foot long stainless steel helical coil immersed in hot water at 60 C. The viscose was heated to 45 C. and the immersion travel of the filaments in the bath was 12 inches at a spinning speed of 107 meters per minute.
  • a 16-yard storage was used on the rotors l6 and ll of the drawing and immediately thereafter the yarn was stretched 65%.
  • Hot water at about C. was used in trough 18. After washing to a neutral condition, the yarn passed through a soft finish and was allowed to relax a total of 8%, about 5% on the way to the drying stage and about 3% on a tapered portion of the drying drums.
  • the yarn produced had a dry tenacity of 3.63 grams per denier, a dry elongation of 11.9%, a wet tenacity of 2.28 grams per denier,'a wet elongation of 22.0% and a fatigue rating of 135.
  • Example II Viscose was spun under the same conditions as in Example I and was heated to a temperature of 45 0., except that the storage on the rotors l6 and I? was reduced to 2 yards.
  • the resulting yarn had a dry tenacity of 3.43 grams per denier, a dry elongation of 12.8%. a wet tenacity of 2.21, a wet elongation of 20.5, and a fatigue rating of 180. This shows the great improvement obtainable by stretching filaments in a less completely regenerated condition.
  • Example II The following table lists additional examples using the same conditions as Example II except the shrinkage or relaxation on the way to the drying stage was reduced to 4% and the temperaturewas varied as indicated.
  • ceding illustrative examples shows the excep-J tionally good flexing life and how this has been increased by the present invention without any sacrifice in the tenacity of the yarn.
  • the heating of the viscose just before spinning gets rid of so-called native cellulose, so that a more uniform filament is ob tained.
  • native cellulose so-called native cellulose
  • this reduction or complete elimination of native cellulose renders the substance of the filament more amenable to the subsequent processes of stretching and relaxation so that the final product has remarkably improved fiexing life without any decrease in tenacity.
  • the reason for such improvement is not clearly understood, but it is clear that stretching should be performed on the filaments while still undergoing regeneration, and preferably before the regeneration has been A; to A; completed.
  • the product of the present invention can be used for the production of filament yarns or staple fiber yarns where high tenacity regenerated cellulose filaments or fibers are desired. It is pai ⁇ ticularly advantageous in the production of cords used for reinforcing rubber goods, such as tires, belts, and the like.
  • a process of producing high tenacity regenerated cellulose filaments having a long flex-life comprising the steps of extruding viscose having a temperature of 30 C. to about 70 C. into an acid regenerating and coagulating bath having a temperature of at least 40 C., stretching the filaments 40 to 80% after partial regeneration but before complete regeneration, washing the filaments and completing the regeneration, relaxing the filaments 3 to and drying them.
  • a process of producing high tenacity regenerated cellulose filaments having a long flexlife comprising the steps 'of extruding viscose having a temperature of 45 to 60 C. into an acid regenerating and coagulating bath having a. temperature of 40 to 75 cgsftretching the filaments 40 to 80% after partial regeneration but before complete regeneration, washing the filaments and completing the regeneration, relaxing the filaments 3 to 10 and drying them.
  • a process of producing high tenacity regenerated cellulose filaments having a long flex-life comprising the steps of extruding viscose having a temperature of 30 C. to about C. into an acid regenerating and coagulating bath having a temperature of at least 40 0., stretching the filaments 40 to 80 after partial regeneration but beforeregeneration is half completed, washing the filaments and completing the regeneration, relaxing the filamentsB to 10%, and drying them.
  • a process of producing high tenacity regenerated cellulose filaments having a long flexlife comprising the steps of extruding viscose having a temperatureof45 to 60 C. into an acid regenerating and coagulating bath having a temperature of 40 to CL, stretching the filaments 40 to after partial regeneration but before regeneration is half completed, washing the filaments and completing the regeneration, relaxirm the filaments 3 to 10 and drying them.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)
US61542A 1948-11-23 1948-11-23 Method for producing high tenacity artificial yarn and cord Expired - Lifetime US2611928A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR999054D FR999054A (en(2012)) 1948-11-23
BE492102D BE492102A (en(2012)) 1948-11-23
NL73733D NL73733C (en(2012)) 1948-11-23
US61542A US2611928A (en) 1948-11-23 1948-11-23 Method for producing high tenacity artificial yarn and cord
GB26234/49A GB675675A (en) 1948-11-23 1949-10-12 Method and apparatus for producing high tenacity artificial yarn and cord
US245306A US2611925A (en) 1948-11-23 1951-09-06 Apparatus for producing high tenacity artificial yarn and cord

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61542A US2611928A (en) 1948-11-23 1948-11-23 Method for producing high tenacity artificial yarn and cord
US245306A US2611925A (en) 1948-11-23 1951-09-06 Apparatus for producing high tenacity artificial yarn and cord

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US245306A Expired - Lifetime US2611925A (en) 1948-11-23 1951-09-06 Apparatus for producing high tenacity artificial yarn and cord

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BE (1) BE492102A (en(2012))
FR (1) FR999054A (en(2012))
GB (1) GB675675A (en(2012))
NL (1) NL73733C (en(2012))

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775505A (en) * 1952-06-05 1956-12-25 American Viscose Corp Spinning regenerated cellulose filaments
US2788256A (en) * 1952-06-02 1957-04-09 American Viscose Corp Method of spinning filamentary strands
US2881473A (en) * 1953-08-28 1959-04-14 American Enka Corp Spin bath arrangement
US2944296A (en) * 1956-02-02 1960-07-12 Du Pont Process for the production of improved regenerated cellulose films
US2997365A (en) * 1958-08-12 1961-08-22 Courtaulds Ltd Production of regenerated cellulose filaments
US3046082A (en) * 1960-12-27 1962-07-24 Rayonier Inc Viscose process for the manufacture of low-shrink rayon
US3084021A (en) * 1960-02-29 1963-04-02 Morimoto Saichi Process for producing regenerated cellulose filaments
US3107970A (en) * 1960-10-04 1963-10-22 Toho Rayon Kk Process for the manufacture of high tenacity viscose rayon
US3324216A (en) * 1962-05-16 1967-06-06 Toyo Spinning Co Ltd Viscose spinning process
US3364290A (en) * 1962-10-30 1968-01-16 American Enka Corp High tenacity rayon yarn production
US3466357A (en) * 1965-12-18 1969-09-09 Glanzstoff Ag Method and apparatus for spinning organic high polymers
US3506754A (en) * 1967-09-27 1970-04-14 Tachikawa Res Inst Process for manufacturing rayon having high degree of polymerization by the viscose process
US3539678A (en) * 1967-08-14 1970-11-10 Teijin Ltd High speed spinning method of viscose rayon filaments having high wet modulus
DE3100368A1 (de) * 1980-01-09 1981-12-24 SNIA Viscosa Società Nazionale Industria Applicazioni Viscosa S.p.A., Milano Verfahren zum kontinuierlichen spinnen von viskosereyon

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789315A (en) * 1953-06-26 1957-04-23 American Viscose Corp Wet spinning apparatus
US2745640A (en) * 1953-09-24 1956-05-15 American Viscose Corp Heat exchanging apparatus
DE1034319B (de) * 1956-07-13 1958-07-17 Glanzstoff Ag Verfahren zur Erzeugung von Faeden mit hohem Gesamttiter durch Verspinnen von Viskose
DE1258013B (de) * 1960-10-28 1968-01-04 Anton Marek Verfahren zum Herstellen von Regeneratcellulosefaeden und -fasern
AT400849B (de) * 1994-05-26 1996-03-25 Chemiefaser Lenzing Ag Spinnvorrichtung mit beweglichem gelenk
CN1197490A (zh) * 1996-07-04 1998-10-28 巴马格股份公司 粘胶丝液的调温方法和装置
CN103643310B (zh) * 2013-12-04 2016-08-17 宜宾丝丽雅集团有限公司 一种纺丝机的纺丝工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB345938A (en) * 1929-11-29 1931-03-30 Ig Farbenindustrie Ag Manufacture of artificial fibres from viscose
US2293825A (en) * 1938-12-30 1942-08-25 Carbide & Carbon Chem Corp Apparatus for processing synthetic textile fibers
US2348415A (en) * 1941-05-09 1944-05-09 American Enka Corp Manufacture of rayon
US2413123A (en) * 1944-06-29 1946-12-24 Du Pont Production of rayon
US2427993A (en) * 1944-07-26 1947-09-23 Ind Rayon Corp Production of rayon
US2433733A (en) * 1945-01-04 1947-12-30 Skenandoa Rayon Corp Process of manufacturing viscose rayon yarn

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB345938A (en) * 1929-11-29 1931-03-30 Ig Farbenindustrie Ag Manufacture of artificial fibres from viscose
US2293825A (en) * 1938-12-30 1942-08-25 Carbide & Carbon Chem Corp Apparatus for processing synthetic textile fibers
US2348415A (en) * 1941-05-09 1944-05-09 American Enka Corp Manufacture of rayon
US2413123A (en) * 1944-06-29 1946-12-24 Du Pont Production of rayon
US2427993A (en) * 1944-07-26 1947-09-23 Ind Rayon Corp Production of rayon
US2433733A (en) * 1945-01-04 1947-12-30 Skenandoa Rayon Corp Process of manufacturing viscose rayon yarn

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788256A (en) * 1952-06-02 1957-04-09 American Viscose Corp Method of spinning filamentary strands
US2775505A (en) * 1952-06-05 1956-12-25 American Viscose Corp Spinning regenerated cellulose filaments
US2881473A (en) * 1953-08-28 1959-04-14 American Enka Corp Spin bath arrangement
US2944296A (en) * 1956-02-02 1960-07-12 Du Pont Process for the production of improved regenerated cellulose films
US2997365A (en) * 1958-08-12 1961-08-22 Courtaulds Ltd Production of regenerated cellulose filaments
US3084021A (en) * 1960-02-29 1963-04-02 Morimoto Saichi Process for producing regenerated cellulose filaments
US3107970A (en) * 1960-10-04 1963-10-22 Toho Rayon Kk Process for the manufacture of high tenacity viscose rayon
US3046082A (en) * 1960-12-27 1962-07-24 Rayonier Inc Viscose process for the manufacture of low-shrink rayon
US3324216A (en) * 1962-05-16 1967-06-06 Toyo Spinning Co Ltd Viscose spinning process
US3364290A (en) * 1962-10-30 1968-01-16 American Enka Corp High tenacity rayon yarn production
US3466357A (en) * 1965-12-18 1969-09-09 Glanzstoff Ag Method and apparatus for spinning organic high polymers
US3539678A (en) * 1967-08-14 1970-11-10 Teijin Ltd High speed spinning method of viscose rayon filaments having high wet modulus
US3506754A (en) * 1967-09-27 1970-04-14 Tachikawa Res Inst Process for manufacturing rayon having high degree of polymerization by the viscose process
DE3100368A1 (de) * 1980-01-09 1981-12-24 SNIA Viscosa Società Nazionale Industria Applicazioni Viscosa S.p.A., Milano Verfahren zum kontinuierlichen spinnen von viskosereyon

Also Published As

Publication number Publication date
FR999054A (en(2012)) 1952-01-25
US2611925A (en) 1952-09-30
NL73733C (en(2012))
GB675675A (en) 1952-07-16
BE492102A (en(2012))

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