US2494468A - Method for the continuous production of synthetic fibers - Google Patents

Method for the continuous production of synthetic fibers Download PDF

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US2494468A
US2494468A US510004A US51000443A US2494468A US 2494468 A US2494468 A US 2494468A US 510004 A US510004 A US 510004A US 51000443 A US51000443 A US 51000443A US 2494468 A US2494468 A US 2494468A
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filaments
fibers
threads
spinning
roller
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Borzykowski Benno
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SWISS "BORVISK" Co
SWISS BORVISK Co
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SWISS BORVISK Co
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Priority to US510004A priority patent/US2494468A/en
Priority to FR946429D priority patent/FR946429A/fr
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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
    • D01D5/06—Wet spinning methods
    • 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

  • This invention relates to a method for the continuous or direct production of synthetic twisted or untwisted fibers and yarns suitable for direct use on textile machines.
  • solidification used in this specification includes any kind of conversion of a suitable basic not solid raw material, for instance, also a molten spinning mass into a solid filament.
  • lament denominates the products obtained by solidification of the extruded spinning mass formations while being in an unfinished state.
  • the articles obtained in an untwisted form after the solidified filaments have been subjected to finishing treatments are termed in this specification finished fibers.
  • the twisted finished endless fibers are termed threads.
  • These fibers may be converted within the framework of this invention into staple fibers, staple ber yarn intermediates such as tops, slivers, rovings and finished staple fiber yarns of a predetermined denier and lwith a predeterminedv number of individual bers.
  • the spinning masses or spinning solutions are extruded in an approximately round, flat or similar shape from a single orifice, such as a capillary tube, or from a number of openings in the nozzle or spinnerette, and the formations are conducted either through appropriate media, for instance heated air, when working according to the socalled dry spinning process, where the volatile solvent is evaporated, or cold air where the spinning mass formations are chilled-or through a coagulation bath in the wet spinning process.
  • the freshly coagulated filaments are guided vertically to carriers, such as bobbins, reels, or
  • Fiber bundles of a heavy total denier having a high tensile strength and high flexibility are of great importance in the production of, for instance, rubber tire cords for heavy loads where threads of 2400 and possibly 4800 deniers preferably directly spun in one jet, are required. If using bobbins or pots, 250 gram packages will, therefore yield threads of a continuous length of only 800 m. in 2400' den. and of only 400 m. in 4800 den., whereas to avoid as much as possible big knots which such heavy deniers will produce in the cords, tire-fabrics and similar articles threads of many thousands of meters in length should be used.
  • the so-called high tenacity rayon .threads are, after having been dried and wound on bobbins, hereafter warped in a second operation in an untwisted or only slightly twisted stage on standard or special size rayon beams. Several hundred threads are spread out between the heads of the beams placed apart approximately 54 inches. The weightl of the yarn on the beam varies depending on the denier and number of the threads wound on the same, but it may well be assumed that the same will be about 800 lbs.
  • the object of the invention is the production of synthetic fibers by the wet or dry spinning process from any kind of raw material, by using a special simple and inexpensive equipment for the formation and, if required, stretching, neutralizing, impregnating, drying or for other treating steps by conducting horizontally all of the great number of the iilamentvbundles produced on the entire machine to a common and not to an individually driven device for each bundle and leading the same from the moment the filaments are extruded from the spinnerettes through all the required treating stages with a great production speed and by winding the same in the finished form in practically endless length as single or plied bundles of capillary bers in untwisted form on special reels suitable to form, if required, a
  • a further object of said new process and equipment is, as above stated, to produce said threads with a much higher tensile strength, greater iiexibility, thorough impregnation with latex containing dispersions, perfect adhesion of the same tol a greater length has been wound on the collecting device than extruded per time unit from the spin- A nerette and hereafter coaguiated in the precipitation medium.
  • the spinning solutions have a higher concentration than normally used, namely at least 8% preferably lil-12% cellulose contents.
  • the precipitation must not be sudden but slow so that the filaments shall remain in a semi-plastic stage during the several stages of stretching and elongation, as hereafter more fully described.
  • the stretching shall be carried out in two or more stages whereby between the first i and second and the subsequent stretching stages to shrink or'- 2' l agents nor to the quantities thereof to be susthe thread shall be given a chance contract to a certain extent.
  • the filaments must be treatedA with suspensions containing latex, resins etc.
  • Latex dispersions usually containin addition to other ingredients sulphur, carbon black and zinc oxide; 23% of .these substances in admixture with a barium compound calculated on the weight of the cellulose in the viscose solution emulsifiedand finely dispersed therein vwill in mostl cases be sumcient to produce .a rough surface on each capillary filament. g The latex dispersion will penetrate quite deeply into each capillary filament even without using an appropriate wetting agent.
  • any not solid spinning masses may be employed in conjunction with this invention adapted to be converted by solidication into filaments, bers and ber bundles.
  • Figs. l and la is a vertical sectional view of a part of a spinning machine to be used for the production of synthetic nished bers in conformity with this invention
  • Fig. 2 is a top plan view of a part of the ma.- chine shown in Fig. l,
  • Fig. 3 is a front elevation of a conveyor roller for use in the operation of the machine
  • Fig. 4 isa vertical sectional view of a modication of a part of the spinning machine shown in Fig. l, including superposed coagulation baths.
  • Fig. is a vertical frontv elevation of a reel assembly for upwindlng the finished bers
  • Fig. 10 is a front elevation of an auxiliary device for use in the treatment of the filaments
  • Figs. 1l and l2 are vertical sectional elevations of two modifications of the machine shown in The solidilying zone
  • my horizontal spinning machine comprises a table I and a plurality of coagulating and treating troughs supported on foundation blocks 3 and encased in enclosure 2. Openings IIO are provided in the walls of the enclosure 2 which is closable by slides III; 'a dome I I2 is located in the ceiling of the enclosure for the accumulation of gases and vapors which are withdrawn therefrom. Grooves II3 provided in table I serve to collect and to discharge waste liquid.
  • Candle lters 4 for the nal filtration of the spinning solution are mounted on table I which extends transversely through the entire operating width of the machine.
  • Pipe systems I3 and l.Il for the supply of the spinning solutions are located underneath table I. Pumps I5 driven by gears Ill are connected with supply pipes I3, I4. Pipes 5 connect the candle filters with the spinnerettes 6 which feed into the coagulation baths.
  • troughs I0, II, I2 Each of these coagulation troughs extends transversely through the entire operating width of the machine or of the adjacent spinnerettes.
  • the troughs are divided by removable partitions I6 in adjacent compartments I1 to receivethe filaments produced by' the individual spinnerettes. If it is desired to increase the productive ca pacity' of the spinning machine without enlarging the operating width two sets of pumps and fed systems, double sets of lters located on the table in staggered relationship may be installed as shown in Figs. l and 2.
  • partitions I6 are removed and larger compartments I8 are formed, receiving two bundles of laments I9 from two spinnerettes which are united by a guide cylinder 20 to form one lament bundle.
  • This modication of the invention may be advantageously used in combination with the staggered arrangement of the candle filters.
  • Conveyor roller aggregates composed of a plurality, for instance, three rollers 2i, 22, 23 are mounted above coagulation bath 1. 'These rollers extend transversely to the longitudinal extension of the machine through its full operating width. the operating with of the machine mvy substantially corresponding to the operating width of all spinnerettes.
  • the conveyor roller aggregates perform functions which are highly important inasmuch as the size and the properties of the fibers are largely influenced by their specific operation. 'I'he location of the conveyor roller aggregates is adjustable in the longitudinal direction of the machine; this makes it possible t vary the distance thereof from the spinnerettes or the coagulating path between the spinnerettes and the conveyor rollers. Needless to state that other ways may be used to vary the coagulating path.
  • the coagulating path may be constant if a specific fiber or yarn with certain properties as to its tensile strength and elongation or other properties is to be produced at a predetermined speed; if, however, different types of fibers,
  • the distance of the roller aggregate from the outlet of the spinnerettes may be adjusted by displacement of the same or by displacement of partition wall H in the longitudinal direction to shorten or lengthen at will the operating path or length in the coagulating baths.
  • rollers which are partly positively driven are to exert a stretching action upon the filaments which in a general way is recited in my Patents 1,401,943 and 1,450,131; this stretching treatment adds in a specific manner greatly to the success of the present continuous process, as explained in a later part of this specification.
  • the conveyor rollers are made from materials which are not attacked by the chemicals used in the process, such as organic solvents, oils, etc.; they should preferably have a, sumciently large circumference so that the filaments will not slip or slide thereon.
  • Roller 2i draws all the filaments i@ produced in the machine with a predetermined speed from the coagulating solution without any or with a very small tensioning action in order to avoid breakage of the tender semi-gelatinous filaments.
  • Roller 22 rotated at a greater circumferential speed than roller ⁇ 2i will stretch or elongate the filaments accordingly, whereas roller 23 will, depending upon the changing requirements, be either rotated with a somewhat lower speed to reduce the stretching action or with a higher circumferential speed than roller 22 to exert an additional stretching or elongating action.
  • roller 22 may be operated to draw 110 meters per minute; this will result in an elongation of If roller 23 is then driven to draw only 109 meters per minute, the shrinkage or retraction of the laments between rollers 22 and 23 will be one meter and the total elongation 9%.
  • the conveyor rollers may be provided with grooves 25, Fig. 3, which also prevent the lament bundles from being entangled.
  • a device is located in the traveling path of the filaments before they reach the conveyor rollers 2
  • This device shown in Figs. 1 and 10, is composed of two rods 26,
  • Partition wall H5 may be made displaceable in the traveling direction of the filaments, which displacement serves, as previously explained, to vary the coagulation path.
  • the adjustment of the coagulation path which may be obtained by any other suitable means is of great importance for the operation of my continuous process because the longer or shorter contact with coagulating liquids of dierent composition, for instance acidity, greatly inuences the coagulating procedure and correspondingly the nal properties of the coagulated filaments.
  • the filaments discharged from roller aggregate 2i to 23 are conducted into coagulation bath t and kept therein under the level of the coagulating fluid by means of cylinders 20.
  • the filaments are then drawn from this coagulation bath by rollers 2l, 20, t.
  • the coagulation in the ilrst bath l can easily be adjusted to obtain an uncomplete coagulation, whereupon the filaments during their passage through roller aggregate 2l-23 are stretched between rollers 22, 23 shrunk or additionally stretched between rollers 22, 23 and then conducted into the second coagulation bath 8.
  • Roller 2l acts as a mere transport means. Roller 28 pressing by inertia on the filaments is rotated by friction and removes in cooperation with roller 2l excessive coagulation liquid. Roller 29 is driven at a greater circumferential speed than roller 2l and therefore exerts a corresponding stretching action upon the filaments, whereas roller 30 is operated in a manner which is similar to that of roller 23, that is with a higher or lower circumferential speed than that of roller 29.
  • a permanent orientation of the miscelles is hereby effected in the ibrous filaments.
  • Roller 3l cooperates with roller 30 in the same manner as roller 28 with roller 2l.
  • Rollers 30, 3i may be provided with projections or teeth 33 to produce on the incompletely solidied filaments surface irregularities in the form of rings or grooves before they are conducted into media adapted to convert the same into the iinished fibers.
  • the subdivision of the coagulation into individual stages or baths which renders it possible to control the same in such a manner that the filaments in the first stage or bath are incompletely coagulated and that the coagulation is then continued and completed in the additional baths or coagulating stages is, as already previously stated, an important element of the invention.
  • the iilaments after leaving bath I are stretched on their way to the second bath 8 by rotating roller 22 with a circumferential speed in excess to the speed of roller 2
  • a further stretching or shrinking action may be applied to the iilaments by adjustment of the circumferential speed oi rollers 21, 2l, 30.
  • a principle oi feeding the coagulating liquid is employed in connection with my invention which as yet has never been and could not have been applied to the vertical manufacture of synthetic illaments, nbers and threads.
  • the coagulating liquid is introduced into the coagulating troughs in countercurrent to the traveling direction oi the nlaments.
  • the successful realisation oi this feed principle is rendered possible by my continuous horizontal process.
  • the fresh precipitation liquid heated to the required temperature is preferably supplied at that end of the troughs which is opposite to the illament entering end.
  • the application of the countercurrent principle makes it possible to gradually reduce the alkalinity oi' the laments, to contact the extruded spinning mass with a coagulating medium oi lowest acidity which is gradually increased/as the solidilcation of the laments progresses.
  • the countercurrent feed of the coagulating liquid has resulted in a surprising improvement of the mechanical properties of the threads and particularly the tensile strength.
  • supply tubes 34 for the coagulating liquid are mounted near to the rear end of the troughs, and vertical branches 35 extending into the troughs are connected to this main feed tube.
  • the overiiowing liquid passes into discharge funnels 31 and from there into discharge pipes 33.
  • the lament drawn from the coagulation bath meets the fresh coagulation liquid having the highest degree of acidity which gradually decreases in proportion to the increase of solidiilcation.
  • the feed velocity of the coagulating liquid and the acid concentration is so calculated that in the vicinity of the nozzles, where the iet of the spinning solution immerges into the coagulant, a state of near neutrality but of suilicient acidity prevails to prevent alkalization of the coagulant.
  • Tis countrcurrent feed system is not restricted to coagulation solutions, but is likewise usable with any other solidifying medium, such as hot or cold air, gas and the like.
  • the third and final solidiiying bath 9 is equipped in a similar manner as the proceeding coagulation baths 1 and 8.
  • roller aggregate 4I, 42, R3. 44. Fig. 1a constructed similarly to roller aggregate 21 to 3
  • FIG. i A modified arrangement oi' the coagulation equipment is shown in Fig. i, whereby the manufacturing capacity oi the machine is greatly increased without enlarging the operating width.
  • a plurality oi superposed staggered spinnerettes 6 may be provided in trough 48, or a plurality oi' superposed coagulating troughs 45 and 48 with several superposed rows of spinnerettes i may be installed.
  • the threads are used for the manufacture of tire cords or for similar purposes, where they are treated with a sulphur containing rubber or latex dispersion, the spinning machine can be made much shorter as the desulphurizing, washing, bleaching, washing, acidifying and washing may be elimin-ated.
  • the spinning machine can also be shortened by using another treatment step forming a part of this invention, namely the application of only one agent which will convert the coagulated unpurified iilaments in one single operation in its purified form.
  • a treatment consisting of (1) Washing the threads wound on perforated bobbins or collected in pots in the shape of cakes on special machines to ,absolute neutrality,
  • the sodium sulilte dissolves the sulphur contained in and deposited on the surface of the illaments; on the other hand it reacts with the acid ci the coagulation bath adhering to the filaments and neutralizes the same whereby one part of the NazSOa is decomposed under the formation of H2803 which exercises a bleaching action on the filaments.
  • the sodium sulite solution at the same time eliminates the salts contained on the fibers.
  • a 2% sodium suliite solution and a treating temperature of between 60 to 65 C. will in most cases give satisfactory results.
  • the thus treated filaments require only simple short rinsing with hot water; the above reierred to long tiresome series of apparatus. operations, space of installation, power, injury oi the fibers may thus be avoided.
  • the following important treatment constituting an additional object of my invention may be employed.
  • the tension of the illaments is loosened but only to such an extent that they do not contact each other or do not slide on the bottom of the treating trough into which they are conducted
  • a hot emulsion or solution is kept in the trough in constant circulation in order to penetrate into each individual capillary illament from which liquids contained therein from previous treatments have been squeezed out as much as possible through rollers or other appropriate devices.
  • the type oi emulsion or solution to be used for this treatment will depend upon the intended application.
  • the filaments may be sized with customary protein sizing compounds
  • This treatment improves the adhesion of the cut staple fibers to each other and the conversion oi the same intospun rapon threads as hereafter more fully explained.
  • each individual bundle of capillary laments emerging from the coagulation baths may rst be wound on reels 54, shown in Fig. 4, which rotate in troughs 55 containing sullphuric acid to convert the threads in cellulose hydrate.
  • the fibers wound on the reels 54 may be used for the production of staple fibers or other suitable purposes.
  • the restarting of the continuous spinning of the respective bundle may be carried out in the following manner:
  • the extruded fresh filament bundle is attached to an adjacentcontinuous bundle at a suitable point after the extrusion and carried by the same through the entire machine; there it is wound on a new reel or bobbin or knotted together with the broken end.
  • the finishing and drying zone through the entire operating width of the machine are located in this zone in ldirect horizontal succession.
  • Treating liquids are supplied to the troughs according to the individual requirements. Only one trough t is shown in Fig. 1a for purposes of illustration. The laments are conducted through these nishing troughs by the same type of roller equipment and guiding means used in the soliditying zone.
  • a drying installation of customary construction indicated in the drawings lby cylinders 5l is arranged in direct horizontal succession to the nishing troughs.
  • Conveyor rollers 5t are provided to discharge the finished dry bundles 59 from enclosure 2.
  • This device comprises a plurality of reels Il! of a rather large diameter; the reels are mounted adjacent to each other on square shafts 6I.
  • the reels are provided with square recesses 82 which are so dimensioned as to :be easily slid onto shafts 6I.
  • Spacer rings 63 fastened on shafts 6I by screws 64 are provided to hold the reels on the shafts in such a manner that their center is in alinement with the center of the thread guide.
  • the consumers of the yarn mount as many of these reels on similar shafts and run as many fibers from individual reels if required through dispersions or solutions as can be accommodated in the impregnating machines, leading hereafter the fibers from one or several adjacent reels directly and in straight line to the ring or similar twisting devises to obtain the required twist.
  • the reels S0 may preferably be made of light materials and provided with recesses 65 to reduce their weight.
  • the cut fibers produced by the wet spinning are The cut fibers produced by the wet spinning.
  • a continuous synthetic yarn made from any kind of proper starting material by solidifying, hardening or coagulating, treating the iilaments, if required, and simultaneously converting the same eventually in the same operation into a 100% finished spun yarn of a predetermined number and size of the individual filaments and diameter or denier of the finished yarn.
  • Variation a The apparatus is located in direct horizontal succession to the spinning machine shown in 17 entire machine are discharged from housing 2 and conducted by conveyor rollers 58, if the produced capillary threads do not possess a suicient rough or crimped surface or the required interber friction to obtain a strong yarn, into a trough 66 which is provided with a jacketed heating wall 61.
  • a cylinder 68 is rotatably mounted in the trough to transport the bers through the same.
  • An appropriate oil for instance an oil used in blending wool, is charged into the trough and maintained therein at a suitable temperature and at a constant level.
  • a nely divided non-slip resin or a similar compound may be added to the oil capable to assist in the production of the above mentioned surfaceconguration.
  • the ber bundles are further transported by a pair oi' rollers 11, 18. These rollers squeeze out the surplus oil. -They are provided with heating means and with teeth or projections 19 which exert upon the bers passing between them, if required, a crimping or goffering action.
  • the ber bundles 59 are then transported to a roving or drawing frame.
  • the type of this frame may be chosen in conformity with the length and the character of the staples to be cut and the kind of yarnto be produced.
  • the ber bundles are conducted in an unstretched state by smooth transport rollers 8
  • the knife is adjustably mounted on its support in order to cut the bers of each ber bundle separately into equal sections 81 of a required length, which are diagrammatically shown in Figs. '7 and 8; during the passage of the cut bers over the transport device 86 a lengthwise mutual displacement is effected of the same whereby overlapping ends are produced, shown by dotted lines II9 in Figs. '1 and 8.
  • This purpose may be accomplished by varying the circumferential speed of rollers 83, 84 and of the rst pair of rollers 88 of the drawing frame 88.
  • the formation of the overlapping ends of the cut bers is important as this results in a greatly improved coherence of the staple bers.
  • the cutter for each ber bundle may be provided with two inclined cutting edges forming between each other an approximately right angle; accordingly shaped cuts H8 are produced, as shown in Fig. '1.
  • the staple bers of each ⁇ individual bundle or a plurality of the same provided with overlapping ends forming a kind of a ribbon are conducted separately into the drawing frame represented by three roller pairs 88, 89, 90 where 18 transport devices 9
  • two installations of the type shown in Fig. 6 may be arranged in vertically superposed relationship one above the other. This modication of the invention is shown in Fig. 11.
  • the cutters 85 of thetwo superposed installations are so mounted as to cut in diagonally opposite directions.
  • each composed, for instance, of bers to produce 50 den., are cut in the lower equipment and produce bands of parallelly alined staple bers.
  • the ber bundles numbered with even numbers distance from the rollers than in the lowerl equipment; the bands of staple bers produced thereby are illustrated schematically as group B in Fig. 8.
  • the bands of the staple ber bundles I, 2, 3 are combined after emerging from the transport rollers 9
  • the twisting may also be accomplished with a ring twisting spindle 95, the roving being brought directly through the drafting rollers 94 to the twisting spindle 95 and wound on the bobbin 96 shown in Fig. 12.
  • sliver, roving, respectively is produced from each of the ribbons.
  • the intermediates are transported by a, pair of transport rollers or other which with their spliced ends grab the neighboring bers in the manner of fangs, will even in the case of a ne product, as a, den. spun staple ber yarn is, .result in the production of a thread having a tensile strength and evenness which is not obtainable with any other system producing spun bers.
  • Variation b Yarns of partly cut bers and partly of continuous bers can be produced:
  • Variation c In case the thread to be produced should consist of, for instance, 25% wool, 50% viscose and 25% of acetate and the nished thread to be of 19 the size corresponding to, for instance the size oi' a thread of 1000 den., then the bers to be extruded from each spinnerette to be of 250 den.
  • the two kinds oi' rovings are united with the band of nbers and lead simultaneously through the drawing, roving and twisting devices, as shown in Fig. 12.
  • are led through the lower rollers V9
  • Variation d It is obvious from the foregoing that my invention embraces also the manufacture of products listed as variation d even though the same are not converted into finished spun yarn, the essence of my invention being the production by an uninterrupted direct or continuous process on a new type of equipment at a high speed of endless or continuous untwisted synthetic iibers with the enumerated properties which are wound simultaneously in great length on special carriers and without unwinding .can be used as such directly on textile machines or simultaneously twisted and wound as iinished threads in great length on appropriate carriers for the direct use on textile machines; furthermore, after having been eventually crimped, dried, etc., during their production cut into staple fibers and transformed in the same operation into staple fiber intermediates, such as rovings or slivers possessing a predetermined number of iibers and denier, the production being carried out in a horizontal equipment on which the path of coagulation, the degree of stretching, shrinking, the time of treating, drying, etc., can be varied at will.
  • a method for the continuous production of synthetic filaments comprising extruding a spinning solution through adjacent spinnerettes into a coagulating bath, producing by adjustment of the concentration of the bath ingredients partially eoagulated filaments while maintaining the same in the bath in a separated horizontal and unsupported position, drawing the partially coagulated filaments by a multi-roller unit through at least one additional coagulatlng bath to complete the coagulation, hereupon drawing the completely coagulated laments by a multiroller unit through at least one after-treating bath to produce the finished filaments, maintaining the iilaments in the said additional coagulating bath and in the after-treating baths in the separated unsupported horizontal position and under tension and subjecting the laments during their passage through the multi-roller units to a successive stretching and shrinking action by said rollers.
  • a method for the continuous production oi' synthetic filaments comprising extruding a spinning solution through adjacent spinnerettes into a coagulating bath, producing by adjustment of the concentration of the bath ingredients partially coagulated filaments while maintaining the same in the bath in a separated' horizontal and unsupported position, drawing the partially coagulated iilaments by a multi-roller unit through at least one additional coagulating bath to complete the coagulation, hereupon drawing the completely coagulated filaments by a multi-roller unit through at least one after-treating bath to produce the finished filaments, maintaining the filaments in the said additional coagulating bath and in the after-treating baths in the separated unsupported horizontal position and under tension and subjecting the laments during their passage through the multi-roller units to a stretching action by said rollers andto a shrinking action.
  • a method for the continuous production of synthetic filaments comprising extruding a spin- 21 ning solution through adjacent spinnerettes into a coagulating bath, producing by adjustment of the concentration of the bath ingredients partially coagulated laments while maintaining the same in the bath in a separated horizontal and unsupported position, drawing the partialLv coagulated iilaments by a multi-roller unit through at least one-additional coagulating bath to complete the coagulation, hereupon drawing the completely coagulated illaments by a multiroller unit through at least one after-treating bath to'produce the ilnished filaments, maintaining the laments in/the said additional coagulatlng bath and in the after-treating baths in the separated unsupported horizontal position and under tension and subjecting the laments during their passage through the multi-roller units while still containing the coagulating liquids to a successive stretching and shrinkingactionbysaid rollers.
  • a method for the continuous production of synthetic laments comprising extruding a spinning solution through adjacent spinnerettes into a coagulating bath, producing by adjustment of the concentration of the bath ingredients partially coagulated laments while maintaining the same in the bath in a separated horizontal and unsupported position, drawing the partially c0- agulated filaments by a multi-roller unit through at least one additional coagulating bath to complete the coagulation, hereupon drawing the completely coagulated filaments by a multi-roller unit through at least one after-treating bath to produce the nished filaments, maintaining the filaments in the said additional coagulating bath and in the after-treating baths in the separated unsupported horizontal position and under tension and subjecting the iilaments during their passage through the multi-roller units to a multiple stretching and shrinking actionV by said rollers.

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782623A (en) * 1951-11-03 1957-02-26 American Viscose Corp Apparatus for treating continuous filamentary bundles
US2979767A (en) * 1956-06-12 1961-04-18 American Viscose Corp Filament film spinning and processing machine
US3199148A (en) * 1962-04-20 1965-08-10 Avisun Corp Film quenching apparatus
US3511397A (en) * 1967-11-16 1970-05-12 Ethicon Inc Method for the manufacture of collagen tape
US3511904A (en) * 1967-11-16 1970-05-12 Ethicon Inc Method for the manufacture of collagen tape
US3905381A (en) * 1973-09-07 1975-09-16 Phillips Petroleum Co Filament liquid quenching apparatus
US4037288A (en) * 1973-09-07 1977-07-26 Phillips Petroleum Company Filament liquid quenching apparatus
US4045532A (en) * 1974-10-29 1977-08-30 Serkov Arkadij T Process of producing viscose yarn
US4477951A (en) * 1978-12-15 1984-10-23 Fiber Associates, Inc. Viscose rayon spinning machine
US20070048457A1 (en) * 2005-08-25 2007-03-01 Fuji Film Corporation Producing method of film having coated layer, film having coated layer, optical film, polarizing plate and liquid crystal display
US20090261498A1 (en) * 2006-10-30 2009-10-22 Spin'tec Engineering Gmbh Method and apparatus for the manufacture of a fiber
US20110121485A1 (en) * 2006-10-30 2011-05-26 Spintec Engineering Gmbh Method and apparatus for the manufacture of a fiber
CN115074847A (zh) * 2021-03-15 2022-09-20 吉林碳谷碳纤维股份有限公司 一种凝固浴装置

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US923777A (en) * 1907-07-05 1909-06-01 Fr De La Viscose Soc Apparatus for producing and treating viscose threads or artificial silk.
US1770412A (en) * 1926-07-05 1930-07-15 Leuchs Karl Process of treating artificial silk made from viscose
FR625049A (fr) * 1926-11-24 1927-08-01 Soie D Aubenton Procédé et appareillage pour la fabrication en continu de fibres textiles artificielles
US2166740A (en) * 1927-11-16 1939-07-18 North American Rayon Corp Manufacture of artificial silk
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AT124714B (de) * 1929-10-18 1931-10-10 Ig Farbenindustrie Ag Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Kunstseide.
US2090560A (en) * 1931-02-10 1937-08-17 Ubbelohde Leo Process for the manufacture of staple fiber
US1951094A (en) * 1931-02-21 1934-03-13 American Enka Corp Method of making artificial silk and product thereof
FR733717A (fr) * 1931-06-26 1932-10-10 Procédé de fabrication continue de fibres cellulosiques possédant les caractéristiques de la laine
US2022961A (en) * 1931-09-23 1935-12-03 American Bemberg Corp Process for the manufacture of artificial silk
GB379880A (en) * 1931-09-26 1932-09-08 Courtaulds Ltd Improvements in and relating to the manufacture and production of artificial threads, filaments and the like and in apparatus therefor
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US2053123A (en) * 1933-07-15 1936-09-01 Du Pont Rayon Co Artificial thread and method of making same
GB499671A (en) * 1936-08-20 1939-01-27 Schlesische Zellwolle Ag Process for curling regenerated cellulose fibres
US2199882A (en) * 1936-09-12 1940-05-07 Toyo Gomu Kagakukogyo Kabushik Process and apparatus for spinning rubber thread from rubber latex
US2246735A (en) * 1938-10-24 1941-06-24 Ind Rayon Corp Method of processing thread
US2255834A (en) * 1938-11-05 1941-09-16 North American Rayon Corp Method of rubberizing cellulose fabrics
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Cited By (13)

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Publication number Priority date Publication date Assignee Title
US2782623A (en) * 1951-11-03 1957-02-26 American Viscose Corp Apparatus for treating continuous filamentary bundles
US2979767A (en) * 1956-06-12 1961-04-18 American Viscose Corp Filament film spinning and processing machine
US3199148A (en) * 1962-04-20 1965-08-10 Avisun Corp Film quenching apparatus
US3511397A (en) * 1967-11-16 1970-05-12 Ethicon Inc Method for the manufacture of collagen tape
US3511904A (en) * 1967-11-16 1970-05-12 Ethicon Inc Method for the manufacture of collagen tape
US3905381A (en) * 1973-09-07 1975-09-16 Phillips Petroleum Co Filament liquid quenching apparatus
US4037288A (en) * 1973-09-07 1977-07-26 Phillips Petroleum Company Filament liquid quenching apparatus
US4045532A (en) * 1974-10-29 1977-08-30 Serkov Arkadij T Process of producing viscose yarn
US4477951A (en) * 1978-12-15 1984-10-23 Fiber Associates, Inc. Viscose rayon spinning machine
US20070048457A1 (en) * 2005-08-25 2007-03-01 Fuji Film Corporation Producing method of film having coated layer, film having coated layer, optical film, polarizing plate and liquid crystal display
US20090261498A1 (en) * 2006-10-30 2009-10-22 Spin'tec Engineering Gmbh Method and apparatus for the manufacture of a fiber
US20110121485A1 (en) * 2006-10-30 2011-05-26 Spintec Engineering Gmbh Method and apparatus for the manufacture of a fiber
CN115074847A (zh) * 2021-03-15 2022-09-20 吉林碳谷碳纤维股份有限公司 一种凝固浴装置

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BE472747A (is")

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