US2919465A - Method and apparatus for filament spinning - Google Patents

Method and apparatus for filament spinning Download PDF

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Publication number
US2919465A
US2919465A US696379A US69637957A US2919465A US 2919465 A US2919465 A US 2919465A US 696379 A US696379 A US 696379A US 69637957 A US69637957 A US 69637957A US 2919465 A US2919465 A US 2919465A
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US
United States
Prior art keywords
spinnerette
bath
spinning
filaments
liquid
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
US696379A
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English (en)
Inventor
Clarence E Hieserman
Lewis C Garrett
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.)
Solutia Inc
Original Assignee
Chemstrand 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 NL233106D priority Critical patent/NL233106A/xx
Priority to BE572982D priority patent/BE572982A/xx
Priority to NL124203D priority patent/NL124203C/xx
Priority to US696379A priority patent/US2919465A/en
Application filed by Chemstrand Corp filed Critical Chemstrand Corp
Priority to GB34363/58A priority patent/GB848612A/en
Priority to DEC17842A priority patent/DE1178546B/de
Priority to FR779050A priority patent/FR1224064A/fr
Priority to CH6617158A priority patent/CH368895A/de
Application granted granted Critical
Publication of US2919465A publication Critical patent/US2919465A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D01D5/06—Wet spinning methods

Definitions

  • This invention relates to a method and apparatus for filament spinning and more particularly to a method and apparatus for circulating the coagulating liquid in a spin bath employed in the wet-spinning of continuous filaments of a synthetic material such as that formed from acrylonitrilc polymers and the like.
  • a spinning material or dope is supplied to a spinning device or 'spinnere'tte, the face of which is provided with a plurality of spinning orifices.
  • the spinnerette is immersed in a coagulating liquid or bath so thatthe spinning material extruded from the orifices reacts with the liquid and solidifies to form a bundle of continuous filaments.
  • the orifices in the spinnerette face may be of any desired number, spacing and diameter in accordance with the filamentary end product to be produced, v
  • the hot spinning material (generally 75 to 90 C.) adds considerable heat to the relatively cool spin bath.
  • the denseness or compactness of the bundle or end of filaments obstructs or reduces the circulation of the coagulating liquid in the bath throughout the face of the spinnerette as well as the central "area of the filament bundle.
  • the location of the spinnerette in some spinning arrangements produces *an interruption of the flow pattern throughout the spin 'bath and gives a relatively static condition adjacent the faceo'fthe spinneret'te.
  • a primary object of this invention is to provide a new and novel filament spinning method and apparatus.
  • Another object of this invention is to provide a new and improved wet-spinning apparatus for spinning continuous synthetic filaments which provides a highly efficient circulation of coagulating liquid throughout the spin bath.
  • a further object of this invention is to provide a new and novel arrangement for a wet-spinning operation which enables the presentation of coagulating liquid at the proper concentration and temperature to the spinning material emerging from the orifices of a spinnerette at all times throughout the spinning operation.
  • Still another object of this invention is to provide a new and improved filament spinning apparatus which enables the spinning of continuous filaments of synthetic material formed from acrylonitrile polymers and the like from which the coagulating liquid may be easily removed in a thorough manner during a subsequent Washing operation and which produces filaments having physical characteristics which are substantially uniform throughout.
  • This invention further contemplates the provision of a new and improved filament spinning apparatus which includes an arrangement for circulating the spin bath coagulating liquid in a positive and predetermined manner Without the need for a high rate of circulation within the bath tank and which insures that all portions of the formed filaments, particularly those portions directly adjacent the spinning orifices, are reacted with properly concentrated, coagulating liquid which is substantially free of contaminating decomposition products, and which is maintained with a high degree of accuracy at a predetermined temperature level.
  • a container or tank for a spin bath in which is positioned in any conventional manner a spinnerette having a plurality of orifices within its face.
  • the container is filled to theproper level with coagulating liquid so that the spinnerette is immersed therein and spinning material extruded through the spinnerette orifices is coagulated into filamentary form upon contact with the liquid.
  • Nozzle means are positioned adjacent the face of the spinnerette and are arranged to inject a secondary flow of coagulating liquid outwardly from the face of the spinnerette to induce a liquid fiow or current throughout the space or-zone defined by the spinnerette face and the nozzle means and to circulate bath liquid within the central area of the spun filament bundle.
  • Figure 1 is 'a'side view showingfilament spinning app'ar'atusconstructed in accordancewith the invention
  • Figure 2 is an enlarged perspective view of a portion of the apparatus of Figure 1 illustrating the invention.
  • Figure 3 is an enlarged view taken substantially along line 33 of Figure 1.
  • a tank or container 11 in which is suspended in any suitable manner a spinnerette 12 of the type for extruding or ejecting a synthetic filamentary material or dope such as material formed of acrylonitrile polymers or the like.
  • the spinning material is supplied to the spinnerette 12 by a conduit or supply line 13 suitably connected to the spinnerette as shown and which is connected at its other end to a suitable source of spinning material designated generally by the numeral 14.
  • the conduit 13 may be pivoted at 16 so as to permit the spinnerette 12 to be moved from an elevated position above the tank 11 to the supported spinning position shown in Figure 1 wherein the spinnerette is rigidly held in a generally inclined plane in the well known manner.
  • the tank 11 is filled with a coagulating liquid 17 which is continuously supplied to the tank 11 by means such as an inlet18 so that the spinnerette 12 is immersed in the coagulating liquid 17 during the spinning operation.
  • the liquid level in the tank may be maintained by means of an outlet 19 through which liquid moving across the tank flows continuously.
  • spinning material or dope preferably in a viscous fluid form is fed to the spinnerette 12 through the conduit 13 and discharged through a plurality of orifices 21 in the spinnerette face 22 ( Figure 2).
  • the viscous dope emerging from the ori fices 21 solidifies upon contact with the coagulating liquid 17 and forms a plurality of filaments 23 which are subsequently directed around snubber bars 24 and removed from the tank 11 in the form of a filamentary tow 26.
  • the filaments 23 are initially formed as the dope emerges from the spinnerettes orifices 21 and the physical and chemical state of the coagulating liquid 17 is, therefore, very critical at this point. It is well known that the temperature of the coagulating liquid 17 is very critical in the proper formation of filaments 23 particularly in the spinning of filaments formed from acrylonitrile polymers and the like.
  • the relatively hot dope emerging from the orifices 21 transfers relatively large quantities of heat to the bath as a result of the relatively low temperature liquid in the bath.
  • nozzle means as shown in Figures 2, 3 designated generally by the numeral 27 for injecting a secondary flow of coagulating liquid into the tank 17 and for inducing a radially inward liquid flow across the face 22 of the spinnerette 12 and within the area defined by the spinnerette face and the nozzle means.
  • the nozzle means 27 comprises a tubular ring 28 which is positioned forward of the spinnerette face 22 as shown in Figure 2 and preferably within a plane substantially parallel to the spinnerette face.
  • the ring 28 may be supported in any suitable manner.
  • the ring 28 may be supported on the spinnerette 12 by means such as a bracket 29 suitably secured at opposite ends to the spinnerette 12 and ring 28 as shown best in Figure 2.
  • the ring 28 contains a central opening 31 which encompasses or encircles the bundle of filaments 23 moving outwardly from the spinnerette face 22 and toward the snubber bar 24.
  • port means are provided for injecting a secondary flow of liquid preferably coagulating liquid as in the container 11 outwardly from the spinnerette face 22.
  • the port means comprise a plurality of circumferentially spaced openings or ports 32 which preferably extend completely around the side of the ring opposite from that of the spinnerette 12.
  • a conduit 30 is connected to the ring in any suitable manner as shown in Figure 3.
  • the conduit 30 is connected at its other end to a suitable source of liquid so that liquid may be fed continuously to the interior of ring 28 and discharged outwardly through the ports 32 in a plurality of secondary streams 33.
  • the streams 33 may be directed in any generally outward direction from the spinnerette face 22, the ports 32 are so located that the streams flow in a slightly converging manner as shown in Figure 2.
  • any flow direction may be selected in accordance with the desired flow pattern such as in a direction substantially perpendicular to the spinnerette face 22.
  • the coagulating liquid 17 is supplied continuously with fresh liquid from the inlet 18 and flows outwardly through outlet 19 as previously described.
  • Spinning material is supplied to the conduit 13 and thence through spinnerette 12 to form filaments 23 which pass coaxially through the opening 31 in the ring 28 as shown, and which are directed subsequently over snubber bars 24 in the form of tow 26.
  • coagulating liquid is supplied through conduit 30 to the ring 28 and a plurality of liquid stream:
  • Apparatus for wet spinning synthetic filaments comprising, in combination, a container for filament coagulating liquid, inlet means for supplying fresh coagulating liquid to said container, outlet means for removing coagulating liquid from said container, a spinnerette supported in said container for immersion in said filament coagulating liquid, a tubular ring positioned concentrically with said spinnerette in close encompassing relationship with the bundle of filaments normally advancing from said spinnerette, and port means in said ring adapted to inject a secondary flow of fresh coagulating liquid into said filament coagulating liquid in said container in a generally outward direction from the face of said spinnerette, said ring being entirely spaced forward with respect to the face of said spinnerette so as to define an annular zone therebetween and concentric therewith, whereby a radially inward current flow of coagulating liquid in said container into said annular Zone will be induced when the coagulating liquid issues from said port means.
  • Filament spinning apparatus in accordance with claim 1 wherein said tubular ring is provided with a plurality of circumferentially spaced openings in the side of said ring opposite said spinnerette face, said openings in said tubular ring being arranged to emit a plurality of streams outwardly from the face of said spinnerette in a converging relationship.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US696379A 1957-11-14 1957-11-14 Method and apparatus for filament spinning Expired - Lifetime US2919465A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL233106D NL233106A (xx) 1957-11-14
BE572982D BE572982A (xx) 1957-11-14
NL124203D NL124203C (xx) 1957-11-14
US696379A US2919465A (en) 1957-11-14 1957-11-14 Method and apparatus for filament spinning
GB34363/58A GB848612A (en) 1957-11-14 1958-10-27 Artificial filament wet spinning apparatus
DEC17842A DE1178546B (de) 1957-11-14 1958-11-13 Vorrichtung zum Nassspinnen von kuenst-lichen Faeden
FR779050A FR1224064A (fr) 1957-11-14 1958-11-13 Appareil et procédé pour la filature de filaments synthétiques
CH6617158A CH368895A (de) 1957-11-14 1958-11-14 Nassspinnverfahren und Vorrichtung zur Ausführung dieses Verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US696379A US2919465A (en) 1957-11-14 1957-11-14 Method and apparatus for filament spinning

Publications (1)

Publication Number Publication Date
US2919465A true US2919465A (en) 1960-01-05

Family

ID=24796819

Family Applications (1)

Application Number Title Priority Date Filing Date
US696379A Expired - Lifetime US2919465A (en) 1957-11-14 1957-11-14 Method and apparatus for filament spinning

Country Status (7)

Country Link
US (1) US2919465A (xx)
BE (1) BE572982A (xx)
CH (1) CH368895A (xx)
DE (1) DE1178546B (xx)
FR (1) FR1224064A (xx)
GB (1) GB848612A (xx)
NL (2) NL124203C (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047906A (en) * 1959-12-11 1962-08-07 Celanese Corp Wet spinning apparatus and start up process
US4054632A (en) * 1970-10-29 1977-10-18 H. B. Fuller Company Method for forming hot melt adhesives into a readily packageable form
US4910850A (en) * 1983-03-22 1990-03-27 Mitsubishi Rayon Company, Ltd. Method for coagulation of a polymer latex
CN113089112A (zh) * 2019-12-23 2021-07-09 连津格股份公司 用于制造纤维素纤维的纺丝机及其操作方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1091947A (en) * 1964-12-18 1967-11-22 Mitsubishi Rayon Co Method for producing artificial fibers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE501476A (xx) * 1951-03-17
US2642333A (en) * 1949-07-26 1953-06-16 Omni Products Corp Method of spinning polyvinyl alcohol fibers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE685803C (de) * 1935-11-26 1939-12-27 Eduard Wurtz Vorrichtung zur Herstellung von Faeden aus Spinnloesungen, insbesondere von Kunstseidefaeden

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642333A (en) * 1949-07-26 1953-06-16 Omni Products Corp Method of spinning polyvinyl alcohol fibers
BE501476A (xx) * 1951-03-17

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047906A (en) * 1959-12-11 1962-08-07 Celanese Corp Wet spinning apparatus and start up process
US4054632A (en) * 1970-10-29 1977-10-18 H. B. Fuller Company Method for forming hot melt adhesives into a readily packageable form
US4910850A (en) * 1983-03-22 1990-03-27 Mitsubishi Rayon Company, Ltd. Method for coagulation of a polymer latex
CN113089112A (zh) * 2019-12-23 2021-07-09 连津格股份公司 用于制造纤维素纤维的纺丝机及其操作方法

Also Published As

Publication number Publication date
GB848612A (en) 1960-09-21
DE1178546B (de) 1964-09-24
CH368895A (de) 1963-04-30
BE572982A (xx)
NL233106A (xx)
NL124203C (xx)
FR1224064A (fr) 1960-06-22

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