US2539980A - Process for the intensive aftertreatment of synthetic threads - Google Patents

Process for the intensive aftertreatment of synthetic threads Download PDF

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Publication number
US2539980A
US2539980A US18408A US1840848A US2539980A US 2539980 A US2539980 A US 2539980A US 18408 A US18408 A US 18408A US 1840848 A US1840848 A US 1840848A US 2539980 A US2539980 A US 2539980A
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United States
Prior art keywords
thread
liquid
roller
path
treating
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Expired - Lifetime
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US18408A
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English (en)
Inventor
Floris Adriaan Jan Van Hall
Barcelo Daniel Rogla
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Akzona Inc
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American Enka Corp
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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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/04—Supporting filaments or the like during their treatment
    • D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
    • D01D10/0463—Supporting filaments or the like during their treatment while in continuous movement the filaments being maintained parallel

Definitions

  • the invention concerns the efifecting of after treatments with different treat- :ing liquids sequentially on continuously moving threads.
  • the spinning solution for example viscose
  • the spinning solution is extruded by means of a spinneret into a spin bath.
  • The-thread formed there- .in is coagulated and partially regenerated in the .spin bath or the regeneration may be substantially completed in a complementary second bath.
  • a stretching operation is often applied.
  • the thread is wound on bobbins or collected in a centrifugal bucket.
  • Another process involves the treatment of the thread while it is passed axially of two angularly disposed cylinders, means being provided to apply the particular treating liquid to each of the respective sets of cylinders and the arrangements being such 'thatthe liquids are moved in a direction opposite to the direction of progression of the thread convolutions. Means are further provided to maintain the treating liquids separate after the application thereof to the thread.
  • a more recent proposal involves liquid sprays which are projected onto the thread at an angle by means of a power nozzle.
  • the thread to be thus treated passes upwardly between two driven godets and the nozzles are formed with thread guiding grooves, the walls of which bear against the thread adjacent the point of projection of the liquid thereon.
  • This proposal is ineffective for a number of reasons. To maintain the thread against the walls of the guides as the liquid is projected )thereon requires that the thread :in
  • the thread must be entirely free of any contact with any thread guides, supporting members, or other elements of the spinning machine which tend to hold the individual filament thereof in tight association from the point where the liquid contacts the thread to the treatment bath from which the thread emerges.
  • the filaments constituting the thread must be untwisted and in parallel relationship.
  • the thread must be under a low tension.
  • the thread must ascend in a substantially vertical path.
  • the liquid surrounds the thread in the form of a sheath and penetrates between the individual filaments.
  • the thread takes a very characteristic shape in the path Of treatment, namely, the thread appears to be many times thicker, which is apparently due to the adherence and absorption of the liquid thereon, causing an intensive swelling of the thread.
  • the action of the treating liquid is rendered much more rapid and eifective, so that when the thread moves at a speed of over 60 meters per minute, the threads vertical path does not have to exceed '70 cm. in order to realize a complete coagulation, desulphurization or other desired treatment.
  • the reaction speed is attributed to the fact that the contact surface of the thread, or better said, of the elementary filaments, with the liquid is at a maximum.
  • Figure 1 is a schematic illustration in side elevation of one particular type of continuous spinning machine constructed in accordance with this invention in which the treating troughs and ring twisting device are shown in cross-section;
  • Figure 2 is aschematic view in perspective illustrating a liquid treating system constructed in accordance with this invention including the system for re-circulating the treating liquid in its
  • Figure 3 is a detailed illustration of the mechanism intended to be used in the adjustments of the guiding rollers which control the spacing of the thread convolutions upon the driven rollers shown in the upper portion of Figure 1;
  • Figure 4 is a side elevational view of one of the liquid vessels provided with a depending liquid jet forming spout constructed in accordance with this invention which has' been found to be particularly suitable for use in the process, the manner in which th thread is enveloped with a sheath of liquid as it is passed upwardly within the space defined by the spout being illustrated;
  • Figure 5 is a top plan view of the structure illustrated in Figure 4
  • Figure 6 is an end view of the structure illustrated in Figure 4;
  • Figure '7 is a side elevational View of another type of liquid vessel and spout similar in purpose to the structure shown in Figure 4;
  • Figure 8 is a top plan View of the structure illustrated in Figure '7;
  • Thread I0 is formed by the extrusion of a spinning solution through a spinneret II into a spin bath contained in trough I2.
  • the thread is led from the spin bath through a thread guide I3 to a driven roller I4.
  • the thread is passed to a small freely rotatable roller I5 following which it is wrapped several times around the two rollers.
  • a roller I6 is mounted for free rotation within a collecting trough I! positioned adjacent to and in the same plane as trough I2.
  • Roller I6 is utilized as a lower guide for the thread.
  • the thread is passed to and around roller I6 from roller I l and then'upwardly to driven roller I8 which is of larger diameter than roller I4.
  • Roller I8 is driven at the same R. P. M. by the same shaft (not shown) that drives roller I 4.
  • Thread II After the thread II] has been passed to roller I8 it is passed to a freely rotating elongate roller 35 in axial alignment with roller I5 and it is then wrapped several times around rollers I8 and 35.
  • Thread I0 after leaving roller I8, is passed around roller 3
  • the thread As the thread progresses through the machine it is led upwardly-from roller 32 around roller 20 and then several wraps of the threadare made around roller .35 and roller 26 before the thread is again passed downwardly to a point where it is led around roller '33. in collecting trough 25.
  • the thread [:0 in its-upward flight passes substantially vertically to rollers (-9, 211,21 and 22, respectively.
  • rollers -9, 211,21 and 22, respectively.
  • a similar vessel 4!] may be utilized to supply liquid to the thread passing upwardly from roller IE but for the reasons hereinafter discussed any suitable means for supplying-a liquid to a moving thread may be utilized at this position.
  • the vessels 36-48, inclusive may be of the form illustrated in Figures -4'9, inclusive, although it has been found that the vessel illustrated in Figures '4-6, inclusive, is particularly well adapted for use as the treating vessel at 36, '31, :38 and 40. On the other hand, the vessel illustrated in Figures 7-9, inclusive, is particularly suited to be the treating vessel at 39.
  • Vessel 36 is :formed with an upstanding cup portion 4
  • Lip 42 is arcuate in transverse cross-section and for a considerable portion of its length upwardly from its lower tip it is arrangedin a plane parallel to the path of travel of thread in its upward flight.
  • the lip or spout 42 is made arcuate in cross-section so as to-par-tially encircle the thread for applying to the thread a counter-current moving sheath or envelope of treating liquid as the thread passes upwardly therethrough.
  • FIG 2 the thread is shown in a single vertical flight in association with the roller 31 positioned in trough 23.
  • the recirculating system includes a liquid reservoir 43. Treating liquid .is fed from the reservoir through pipe 44 provided with a cock :45 for controlling or shutting off the supply :as desired. Gup portion M is maintained in a fixed but adjustable position near the upwardly moving thread by means of a support '45 and a bracket 41. In use. the liquid is fed to the vessel 41 at a predetermined rate :and it overflows the depressed edge of the cup :portion and passes downwardly within the spout or 'lip '42 in the form of a gentle stream through which the ascending thread moves.
  • the liquid in each of the circulating Systems is. of the desired hainia mposition, dependi g pon the part cular treatment there pre erre and it is main ained conveyorm so.
  • the liquid in trough 23 may be continuously recirculated by being propelled through a pipe: line 48, valve .49 tov tank 43.
  • the liquid during recirculation may e purified and reg nerated as is, desired or. necess ry- Thread to being. propelled upwardly w thin. the lip or spout .42. isv passed so that it will not be damaged or closed by pressure from the wall of the lip or spout.
  • Ring 5.4 is mounted to, be raised and lowered in the normal manner in order to control the. winding pattern of threadsv laid up on bobbin 55.
  • the ring twister is illustrated schematically in Figure ,1 as being driven by an electric motor 516 which may be adjusted at two speeds.
  • a slip clutch 5] of the centrifugal force type is pro ided which permits slip to the desired degree.
  • Bracket 6,0 is fastened to the "mavchine frame, designated at 6 I
  • Adjustment screw 62 is threaded into-pivoted nut 63 which in turn .is secured to bracket .60, and the screw has its ,free end pivota lyanchored at 64-to the end piece of shaft 58..
  • Upon turning screw 62 by the wing head '65 shaft 58- will be caused to move about pivot 59 and accordingly adjust the inclination of the axis of rollers 15 and 35 toward or away from the axis-of rollers M, 1,8. I9, 211. 2;! and '22 to. the desired degree.
  • Ill-he shaft for roller 52 may be similarly mounted for ad-ziustment.
  • the liquid vessel for applying the finishing liquid may be disposed in the upper portion of the threadv flight andthe liquid treating vessel for the washing operation may be positioned between the first vessel and the bath trough located vertically therebelow. Therefore in such operation the thread containing the desulphurizing agent is washed before it.is subjected to the action of thefinishing agent.
  • the vessel illustrated in Figures 7-9, inclusive is formed with a supporting rod 15 which may be mounted in the same manner asthat of the vessel illustrated in Figures 4-6, inclusive.
  • This vessel is provided. with a downwardly extending conical spout 16 which has an opening I1 vertically extending throughout its height.
  • a connection fora flexible hose or other liquid supply conductor is illustrated at 18 and the liquid supplied through the conductor will accumulate in the conical spout 15.
  • the liquid in the conical spout will form a sheath or envelope upon the thread when it is passed through the center of the spout. Opening 11 is utilized in threading up the machine.
  • Example I A normal viscose spinning solution with 6% cellulose and 7% NaOI-I was coagulated in a sulphuric acid bath of 7% H2804 containing zinc salt and sodium salt and having a specific gravity of 1.3 at 20 C.
  • This thread was subjected to a preliminary stretch treatment between the spinneret I l and the roller I8.
  • Dilute sulphuric acid of 3% concentration at a temperature of about 85 C. was applied to the thread by the vessel 4 in the flight leading upwardly to the roller l8.
  • the effect of the dilute sulphuric acid is that of de-xanthating and coagulation. while swelling is produced in the bath within the tank I1.
  • the thread was treated with pure water at atemperature of about C. and at vessel 31 it was subjected to a desulphurizing treatment by a solution of 1.5% sodium sulphide.
  • At vessel 38 it was subjected to another washing treatment with water at a temperature of about 80 C. and
  • was passed through the thread guide 53, flier 54, and onto bobbin 55 for twisting.
  • the motor 25 may be drivenat two speedsthe required take-up speed and the decreased speed used for threading up.
  • Example II Normal viscose prepared from cellulose having a low hemi-cellulose content was spun through normal spinnerets into a Muller bath to form 1100 denier rayon having 275 filaments. After leaving the spin bath, the thread was guided in a substantially vertical direction alternately over draw off rollers and through treating baths, and during each ascending passage the thread was subjected to the treatment with liquids by means of the liquid treating devices shown in the drawings, and then dried, twisted, and collected, as shown therein. In the first path of thread travel to roller I8 a 3% sulphuric acid solution at C. was applied to the thread. During thesubse'quent-steps of thegafter treatment the thread was treated respectively with water at 80 C., 1.5% sodium sulphide solution, water at 80 C., and finally a 2% finishing solution at vessels 36, 31, 38 and 39, respectively.
  • the step which comprises propelling the thread in an upward direction in a substantially vertical path between two widely spaced guiding points while under a tension insufficient to eifect a stretching thereof, and in the upper portion of the thread path during its ascending passage between said points initially guiding a jet of after treating liquid into contact with the thread and for a relatively small portion of the thread path in countercurrent relation to the direction of the thread travel while avoiding any other contact of the thread between the guiding points whereby a 10 sheath of treating liquid envelopes the thread at the point of contact and moves downwardly along the thread during the major portions of its travel in the path and penetrates the individual filaments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US18408A 1947-04-12 1948-04-01 Process for the intensive aftertreatment of synthetic threads Expired - Lifetime US2539980A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES265480X 1947-04-12
ES71147X 1947-11-07

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US2539980A true US2539980A (en) 1951-01-30

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US (1) US2539980A (fr)
BE (1) BE480394A (fr)
CH (1) CH265480A (fr)
FR (2) FR965208A (fr)
GB (1) GB651980A (fr)
NL (1) NL67862C (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675690A (en) * 1949-10-20 1954-04-20 Spinning-in device
US2677949A (en) * 1951-04-28 1954-05-11 Int Paper Canada Thread wiper-guide for use in thread-spinning apparatus
US2722817A (en) * 1952-10-29 1955-11-08 American Viscose Corp Liquid treating apparatus
US2881906A (en) * 1954-04-19 1959-04-14 American Enka Corp Continuous spinning method
US2883259A (en) * 1952-01-25 1959-04-21 Severini Goffredo Processes and equipments for the continuous treating of yarns
US2892336A (en) * 1954-02-02 1959-06-30 Pensotti Ambrogio Apparatus for wet-treating threads, particularly viscose rayon threads
US2974363A (en) * 1954-07-02 1961-03-14 Meyer Hans Method of and apparatus for the continuous production of synthetic fibers
US2979767A (en) * 1956-06-12 1961-04-18 American Viscose Corp Filament film spinning and processing machine
US3029124A (en) * 1959-08-24 1962-04-10 Koppers Co Inc Process for producing polyethylene monofilaments
US3028754A (en) * 1958-11-10 1962-04-10 Ametek Inc Measuring instrument
US3058332A (en) * 1958-09-09 1962-10-16 Phrix Werke Ag Fa Apparatus for the wet-treatment of fibers and the like
US3231934A (en) * 1962-07-12 1966-02-01 Diotti Giacinto Apparatus for the wet treatment of viscose yarns
US3337931A (en) * 1966-06-21 1967-08-29 Dixie Yarns Method of producing yarns which behave as if thermoplastic
US3353210A (en) * 1965-12-09 1967-11-21 Du Pont Rectangular convergence guide
US3931722A (en) * 1972-05-31 1976-01-13 Suntex Limited Apparatus for liquid treatment of a cloth band of an endless form
CN115787111A (zh) * 2022-06-24 2023-03-14 南通大学 一种一体式多功能台式微型纺丝设备及其纺丝方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108754641B (zh) * 2018-08-21 2024-02-27 江西东华机械有限责任公司 一种便于生头的凝固浴水槽

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515127A (en) * 1938-06-09 1939-11-27 Courtaulds Ltd Improvements in and relating to the production of artificial threads and in apparatus therefor
US2317152A (en) * 1940-04-29 1943-04-20 Manville Jenckes Corp Apparatus and method for the manufacture of artificial fibers
US2351110A (en) * 1942-04-30 1944-06-13 American Viscose Corp Apparatus for liquid treatment of filamentary material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515127A (en) * 1938-06-09 1939-11-27 Courtaulds Ltd Improvements in and relating to the production of artificial threads and in apparatus therefor
US2317152A (en) * 1940-04-29 1943-04-20 Manville Jenckes Corp Apparatus and method for the manufacture of artificial fibers
US2351110A (en) * 1942-04-30 1944-06-13 American Viscose Corp Apparatus for liquid treatment of filamentary material

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675690A (en) * 1949-10-20 1954-04-20 Spinning-in device
US2677949A (en) * 1951-04-28 1954-05-11 Int Paper Canada Thread wiper-guide for use in thread-spinning apparatus
US2883259A (en) * 1952-01-25 1959-04-21 Severini Goffredo Processes and equipments for the continuous treating of yarns
US2722817A (en) * 1952-10-29 1955-11-08 American Viscose Corp Liquid treating apparatus
US2892336A (en) * 1954-02-02 1959-06-30 Pensotti Ambrogio Apparatus for wet-treating threads, particularly viscose rayon threads
US2881906A (en) * 1954-04-19 1959-04-14 American Enka Corp Continuous spinning method
US2974363A (en) * 1954-07-02 1961-03-14 Meyer Hans Method of and apparatus for the continuous production of synthetic fibers
US2979767A (en) * 1956-06-12 1961-04-18 American Viscose Corp Filament film spinning and processing machine
US3058332A (en) * 1958-09-09 1962-10-16 Phrix Werke Ag Fa Apparatus for the wet-treatment of fibers and the like
US3028754A (en) * 1958-11-10 1962-04-10 Ametek Inc Measuring instrument
US3029124A (en) * 1959-08-24 1962-04-10 Koppers Co Inc Process for producing polyethylene monofilaments
US3231934A (en) * 1962-07-12 1966-02-01 Diotti Giacinto Apparatus for the wet treatment of viscose yarns
US3353210A (en) * 1965-12-09 1967-11-21 Du Pont Rectangular convergence guide
US3337931A (en) * 1966-06-21 1967-08-29 Dixie Yarns Method of producing yarns which behave as if thermoplastic
US3931722A (en) * 1972-05-31 1976-01-13 Suntex Limited Apparatus for liquid treatment of a cloth band of an endless form
CN115787111A (zh) * 2022-06-24 2023-03-14 南通大学 一种一体式多功能台式微型纺丝设备及其纺丝方法
CN115787111B (zh) * 2022-06-24 2023-11-21 南通大学 一种一体式多功能台式微型纺丝设备及其纺丝方法

Also Published As

Publication number Publication date
CH265480A (de) 1949-12-15
BE480394A (fr) 1900-01-01
FR965208A (fr) 1950-09-06
GB651980A (en) 1951-04-11
NL67862C (fr) 1900-01-01
FR64256E (fr) 1955-11-09

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