US3067461A - Apparatus for producing twisted filament yarn - Google Patents

Apparatus for producing twisted filament yarn Download PDF

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Publication number
US3067461A
US3067461A US67658A US6765860A US3067461A US 3067461 A US3067461 A US 3067461A US 67658 A US67658 A US 67658A US 6765860 A US6765860 A US 6765860A US 3067461 A US3067461 A US 3067461A
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US
United States
Prior art keywords
filaments
streams
spinneret
extrusion
polymer
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
US67658A
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English (en)
Inventor
George B Hughey
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.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
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 US3124628D priority Critical patent/US3124628A/en
Application filed by Monsanto Chemicals Ltd filed Critical Monsanto Chemicals Ltd
Priority to US67658A priority patent/US3067461A/en
Priority to GB37394/61A priority patent/GB923160A/en
Priority to DE19611435388 priority patent/DE1435388A1/de
Priority to CH1269561A priority patent/CH382912A/fr
Priority to FR877745A priority patent/FR1305781A/fr
Priority to DK441261AA priority patent/DK103249C/da
Priority to BE610052A priority patent/BE610052A/fr
Application granted granted Critical
Publication of US3067461A publication Critical patent/US3067461A/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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt 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
    • D02G1/0206—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
    • D02G1/0266—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 false-twisting machines

Definitions

  • the objects of the present invention are accomplished by providing one or more melt-spinning devices adapted to shape and discharge molten or plastic organic filament-forming materials into one or more streams, to cool the streams into hardened filaments and thereafter to collect the filaments in an orderly form.
  • Each spinning device includes a plate, such as a spinneret, having a suitable number of small orifices therein. The molten or plastic mass is extruded at a constant rate and under Uressure through these small orifices to form molten streams of polymer.
  • the device includes a protective spinning chamber adapted to receive the shaped streams which are directed downwardly therethrough and wherein the extruded streams are cooled and solidified into filaments such as by a non-turbulent flow of gas impelled against the streams.
  • Each spinning device contains at least one rotatably mounted twist-imparting member having a thin continuous helical rib projecting therefrom.
  • the member is positioned near the yarn path between the spinneret and means for taking up the yarn in a uniform manner.
  • the member is adapted to produce a rotation moment to individual filaments by a peripheral effort on the filaments.
  • the resulting twist of the filaments extends upwardly toward the point of extrusion and slightly past the point of solidification of the filaments in the spinning chamber so as to obtain a true and permanent twist in the filaments.
  • FIGURE 1 is a front elevational view of a melt-spinning apparatus incorporating one embodiment of the invention
  • FIGURE 2 is an elevational view taken from the right hand side of FIGURE 1 with a side wall of the apparatus removed for convenience of illustration;
  • FIGURE 3 is a view of part of the apparatus on a larger scale taken along line 3-3 of FIGURE 1 and looking in the direction of the indicating arrows which illustrates more fully how the said member imparts a twist to the filaments.
  • reference numeral 10 generally indicates a spinneret assembly which incorporates a spinneret 11 through Whose orifices a molten or plastic filament-forming polymer is extruded into a plurality of filaments 12.
  • the molten polymer is pumped or propelled to the spinneret under pressure through a conduit 13 from a suitable source where the polymer is heated to a molten or plastic condition.
  • the face of the spinneret preferably is horizontally disposed so that the normal extrusion axis extends vertically downward. Upon extrusion the molten polymer assumes the form of a stream or a plurality of streams of polymer.
  • the streams are received immediately after extrusion by and cooled within the confined and protected area provided by the elongated spinning chamber 14.
  • the bundle of filaments 12 pass downwardly through the cooling zone within chamber 14 and thence to and through yarn converging guide 15 where the filaments are gathered together in a more compact bundle. Thereafter, the bundles of filaments are taken up in an orderly manner.
  • the take-up means includes reciprocatably mounted traverse guide 16 adapted to lay the melt-spun filaments on a bobbin '17 or the like suitably driven to form a filament package 20 It will be appreciated that the speed of filament take-up on bobbin 18 will be coordinated properly with the extrusion speed of the polymer so that proper melt-spinning is accomplished. Ordinarily the collection rate is considerably higher than the extrusion rate.
  • the spinning chamber 14 having an open front comprises two solid vertical side walls 21 and 22 in spaced apart relationship, a top panel 23 and a bottom panel 24 provided with an opening therein through which the gathered bundle of filaments passes in operation.
  • the back wall of the chamber 14 bridging said side walls 21 and 22 and extending from panel 23 to panel 24 is made of material pervious to gas, such as gauze fabric, felt material, or as illustrated, a fine mesh wire screen 25.
  • the screen will impart a diffused but substantially straight line flow to the cooling gas impelled therethrough so that the cooling gas contacts laterally the vertically moving streams of polymer to cool same into solid-filaments. Often it is desirable to contact the filamentary stream with a force of air sufficient to cause the streams to assume an arcuate path during part of their travel down the spinning chamber.
  • rotatably mounted members 26 and 27 each having a continuous helical rib 28 projecting therefrom and extending longitudinally thereof.
  • the said members are adapted to impart a rotational movement to the filaments coming into contact therewith.
  • the members are circular in cross section and are mounted to be normal with respect to the extrusion axis.
  • the sides 29 of rib 28 preferably are substantially parallel.
  • the twist-imparting members 26 and 27 are mounted on drive shafts 30 and 31 respectively driven by electric motors 32 and 33. The motors are energized by suitable electrical connections, not shown. As indicated above, the long axes of members 26 and 27 are perpendicular with respect to the extrusion axis.
  • the members are positioned near the bottom of the spinning chamber 14 where the filamentary streams are solid.
  • the members cause the individual filaments to become twisted with the twist running back unimpeded toward the spinneret where the streams are still plastic.
  • the resulting twist is permanent.
  • the number of grooves between the ribs 28 approximates the number of filaments being produced and the height of the ribs is less than half the distance across the cross section of the filaments.
  • the filaments for best results contact opposite sides of the peripheries of the members. Drawing attention to FIGURE 2, it is noted that the filaments 12 contact the left side of the periphery of member 26 and then the right side of the periphery of member 27.
  • the invention is generally applicable to any substance that can be suitably melt spun.
  • Specific polymeric materials capable of being melt spun include: nylon 66, nylon 6, nylon 4, nylon 610, nylon ll, and their filamentforming copolmers,e.g., 6/66 6/610/66, etc.; polyesters derived from terephthalic acid and ethylene glycol and from terephthalic acid and bis-1,4-(hydrxytnethyl) cyclohexane; polyethylene and polypropylene; and other substances.
  • the present apparatus most suitable for twisting yarn whose filaments have a non-circular cross section such as that produced where a spinneret having non-circular shaped orifices is employed during the manufacture thereof.
  • Yarns of X- or Y-shaped cross section are examples of yarns having a non-circular cross section.
  • the yarns may have a triangular cross section as shown in FIGURE 3 or may have a square cross section or other polygonal or multilobal shape.
  • a melt-spinning apparatus for use in the production of individually twisted filaments from a thermoplastic filament-forming polymer comprising a spinneret for extruding said polymer in a molten condition in a yarn path extending generally downward along a vertical extrusion line at a predetermined extrusion rate, means for collecting the resulting filaments in package form at a predetermined increased collection rate positioned below said spinneret, a spinning chamber adapted to receive the streams of polymer immediately upon extrusion thereor" wherein the streams are cooled into hardened filaments, at least one rotatably mounted member having a con-- tinuous helical rib projecting therefrom and extending longitudinally thereof, said member being positioned within said chamber in the yarn path at a point where the streams normally have been cooled into hardened filaments, whereby the filaments are twisted individually by a peripheral effort on the filaments exerted by said member with the twist running back toward the spinneret beyond the point where the filaments become hardened.
  • a melt-spinning apparatus for use in the production of individually twisted filaments from a thermoplastic filament-forming polymer comprising a spinneret for extruding said polymer in a molten condition in a yarn path extending generally downward along a vertical extrusion line at a predetermined extrusion rate, means for collecting the resulting laments in package form at a predetermined increased collection rate positioned below said spinneret whereby to attenuate the filaments, a spinning chamber adapted to receive the streams of polymer immediately upon extrusion thereof wherein the streams are cooled into hardened filaments, at least one rotatably mounted twist-imparting member having a continuous helical rib projecting therefrom and extending longitudinally thereof, said member being positioned within said chamber in the yarn path at a point where the streams normally have been cooled into hardened filaments, the long axis of said twist-imparting member being substantially perpendicular with respect to the extrusion axis, and means for rotating said twist-imparting member,
  • a melt-spinning apparatus for use in the production of individually twisted filaments from a thermoplastic filament-forming polymer comprising a spinneret for extruding said polymer in a molten condition in a yarn path extending generally downward along a vertical extrusion line at a predetermined extrusion rate, means for collecting the resulting filaments in package form at a predetermined increased collection rate positioned below said spinneret whereby to attenuate the filaments, a spinning chamber adapted to receive the streams of polymer immediately upon extrusion thereof wherein the streams are cooled into hardened filaments, two spaced apart rotatably mounted twist-imparting members each having a continuous helical rib projecting therefrom and extending longitudinally thereof, said members being positioned within said chamber in the yarn path where the streams have been cooled into hardened filaments, the long axes of said twist-imparting members being substantially perpendicular with respect to the extrusion axis, and means for rotating said twist-imparting members, whereby the
  • a melt-spinning apparatus for use in the production of individually twisted filaments from a thermoplastic filament-forming polymer comprising a spinneret for extruding said polymer in a molten condition in a yarn path extending generally downward along a vertical extrusion line at a predetermined extrusion rate, means for collecting the resulting filaments in package form at a predetermined increased collection rate positioned below said spinneret whereby to attenuate the filaments, an elongated spinning chamber positioned above said collecting means and adapted to receive the streams of polymer immediately upon extrusion thereof, wherein the streams are cooled into hardened filaments, two spaced apart rotatably mounted twist-imparting members positioned in the yarn path in the lower half of said spinning chamber, a con tinuous helical rib projecting from and extending longitudinally of each of said members, the long axes of said members being substantially perpendicular with respect to the extrusion axis, the height of the ribs being less than half the distance across
  • a melt-spinning apparatus for use in the production of individually twisted filaments from a thermoplastic filament-forming polymer comprising a spinneret for extruding said polymer in a molten condition in a yarn path extending generally downward along a Vertical exttrusion line at a predetermined extrusion rate, means for collecting the resulting filaments in pack-age form at a predetermined increased collection rate positioned below said spinneret whereby to attenuate the filaments, an elongated spinning chamber positioned above said collecting means and adapted to receive the streams of polymer immediately upon extrusion thereof, wherein the streams are cooled into hardened filaments, two spaced apart rotatably mounted shafts of circular cross section positioned in the yarn path in the lower half of said spinning chamber, a continuous helical rib projecting from and extending longitudinally of each of said shafts, the long axes of said shafts being substantially perpendicular with respect to the extrusion axis, the height of the ribs being less than half the distance

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
US67658A 1960-11-07 1960-11-07 Apparatus for producing twisted filament yarn Expired - Lifetime US3067461A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US3124628D US3124628A (en) 1960-11-07 Method for producing twisted
US67658A US3067461A (en) 1960-11-07 1960-11-07 Apparatus for producing twisted filament yarn
GB37394/61A GB923160A (en) 1960-11-07 1961-10-18 Method and apparatus for producing twisted filament yarn
DE19611435388 DE1435388A1 (de) 1960-11-07 1961-10-25 Verfahren und Vorrichtung zur Herstellung gedrillter Faeden
CH1269561A CH382912A (fr) 1960-11-07 1961-11-02 Procédé de production d'un fil à filaments tordus et appareil pour sa mise en oeuvre
FR877745A FR1305781A (fr) 1960-11-07 1961-11-02 Procédé et appareil pour la production d'un fil à filaments tordus
DK441261AA DK103249C (da) 1960-11-07 1961-11-06 Fremgangsmåde og apparat til fremstilling af smeltespundne, kontinuerlige filamenter med permanent snoning.
BE610052A BE610052A (fr) 1960-11-07 1961-11-07 Procédé et appareil pour la production d'un fil à filaments tordus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67658A US3067461A (en) 1960-11-07 1960-11-07 Apparatus for producing twisted filament yarn

Publications (1)

Publication Number Publication Date
US3067461A true US3067461A (en) 1962-12-11

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US3124628D Expired - Lifetime US3124628A (en) 1960-11-07 Method for producing twisted
US67658A Expired - Lifetime US3067461A (en) 1960-11-07 1960-11-07 Apparatus for producing twisted filament yarn

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US3124628D Expired - Lifetime US3124628A (en) 1960-11-07 Method for producing twisted

Country Status (6)

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US (2) US3067461A (fr)
BE (1) BE610052A (fr)
CH (1) CH382912A (fr)
DE (1) DE1435388A1 (fr)
DK (1) DK103249C (fr)
GB (1) GB923160A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287888A (en) * 1963-11-12 1966-11-29 Monsanto Co Apparatus for the treatment of synthetic filaments
US3367100A (en) * 1965-06-23 1968-02-06 Monsanto Co Multifilament yarn having individually twisted filaments
US4607483A (en) * 1985-04-01 1986-08-26 Warner-Lambert Company Method and apparatus for twisting and advancing strand material
CN108570721A (zh) * 2018-06-25 2018-09-25 张家港市金星纺织有限公司 一种聚丙烯纤维的制备装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB984922A (en) * 1963-02-02 1965-03-03 British Nylon Spinners Ltd Improvements in or relating to drawing and crimping synthetic polymer filaments
US3457338A (en) * 1964-09-21 1969-07-22 Dow Chemical Co Process for crimping polypropylene filaments
US3526689A (en) * 1968-04-03 1970-09-01 Union Carbide Corp Fused multifilament round spandex yarn

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2086651A (en) * 1934-11-02 1937-07-13 Ubbelohde Leo Method and apparatus for making artificial silk and the like
US2150354A (en) * 1935-03-27 1939-03-14 Berndt Karl Method and apparatus for simultaneously spinning and twisting artificial threads
US2328074A (en) * 1940-07-16 1943-08-31 Du Pont Manufacture of textile yarn
US2347036A (en) * 1939-07-08 1944-04-18 Dumont Eugen Process for the production of filaments from molten thermoplastic materials
US2708813A (en) * 1948-06-01 1955-05-24 Saint Gobain Method of and apparatus for producing glass fibers
US2874410A (en) * 1954-06-30 1959-02-24 Du Pont Apparatus for uniformly drawing a plurality of filaments
US2920346A (en) * 1957-08-09 1960-01-12 Jori Luciano Thread stretching device for wet spinning more particularly of viscose rayon
US2957747A (en) * 1958-07-22 1960-10-25 Du Pont Process for producing crimpable polyamide filaments
US3010145A (en) * 1956-03-08 1961-11-28 Rolfsen Ole Method and apparatus for producing ball-like nodules of fine-grained ores and minerals

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509845A (en) * 1942-12-09 1950-05-30 Owens Corning Fiberglass Corp Apparatus for forming ribbons of glass and other thermoplastic materials

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2086651A (en) * 1934-11-02 1937-07-13 Ubbelohde Leo Method and apparatus for making artificial silk and the like
US2150354A (en) * 1935-03-27 1939-03-14 Berndt Karl Method and apparatus for simultaneously spinning and twisting artificial threads
US2347036A (en) * 1939-07-08 1944-04-18 Dumont Eugen Process for the production of filaments from molten thermoplastic materials
US2328074A (en) * 1940-07-16 1943-08-31 Du Pont Manufacture of textile yarn
US2708813A (en) * 1948-06-01 1955-05-24 Saint Gobain Method of and apparatus for producing glass fibers
US2874410A (en) * 1954-06-30 1959-02-24 Du Pont Apparatus for uniformly drawing a plurality of filaments
US3010145A (en) * 1956-03-08 1961-11-28 Rolfsen Ole Method and apparatus for producing ball-like nodules of fine-grained ores and minerals
US2920346A (en) * 1957-08-09 1960-01-12 Jori Luciano Thread stretching device for wet spinning more particularly of viscose rayon
US2957747A (en) * 1958-07-22 1960-10-25 Du Pont Process for producing crimpable polyamide filaments

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3287888A (en) * 1963-11-12 1966-11-29 Monsanto Co Apparatus for the treatment of synthetic filaments
US3367100A (en) * 1965-06-23 1968-02-06 Monsanto Co Multifilament yarn having individually twisted filaments
US4607483A (en) * 1985-04-01 1986-08-26 Warner-Lambert Company Method and apparatus for twisting and advancing strand material
CN108570721A (zh) * 2018-06-25 2018-09-25 张家港市金星纺织有限公司 一种聚丙烯纤维的制备装置

Also Published As

Publication number Publication date
DK103249C (da) 1965-12-06
CH382912A (fr) 1964-10-15
DE1435388A1 (de) 1968-11-07
BE610052A (fr) 1962-05-07
US3124628A (en) 1964-03-10
GB923160A (en) 1963-04-10

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