US3689620A - High speed wet spinning technique - Google Patents

High speed wet spinning technique Download PDF

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Publication number
US3689620A
US3689620A US94468A US3689620DA US3689620A US 3689620 A US3689620 A US 3689620A US 94468 A US94468 A US 94468A US 3689620D A US3689620D A US 3689620DA US 3689620 A US3689620 A US 3689620A
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Prior art keywords
filaments
liquid
spinning
rolls
passage
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US94468A
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English (en)
Inventor
Toshio Miyazaki
Etuzou Omura
Kyoku Katakabe
Minoru Makita
Enji Iwase
Hideo Tsutsumiuti
Takashi Yotsumoto
Fumiaki Ikeda
Yoshiro Takashima
Hiromu Sueyoshi
Tomio Maesaka
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Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
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Asahi Chemical Industry Co Ltd
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
    • D01F2/04—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts from cuprammonium solutions
    • 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 high speed wet spinning technique.
  • the main object of the invention is to provide a process and method for eliminating such liquid disturbance in the secondary bath pool provided in each of the spinning and coagulating unit of the filaments manufacturing plant.
  • the second object is to provide a process and apparatus adapted for working in an efficient way for the above purpose.
  • the entrained coagulating bath liquid by the travelling filaments is hemmed in its velocity by use of a unique liquid brake.
  • the after-treatments of the spun'and coagulated filaments are performed in a perfectly loosed stage for abolishing the conventional pins and combs conventionally used in the after-treating stages and, indeed, by use of a unique and efficient filaments state convention step and means for transforming the tensioned state of the filaments into a perfectly loosened state thereof in the after-treating stages.
  • FIG. 1 is a representative embodiment of the continuous man-made filaments based on the wet spinning process and embodying the principles of the present invention, the whole representation being shown dividedly for reason of drawing space in two sections which should be conjointed by overlapping the section lines X X.
  • FIG. 2 is an enlarged axial section of a spinning assembly employed in the manufacturing plant shown in F IG. 1.
  • FIG. 3 is an enlarged axial section of a liquid-braking and spraying unit employed in the plant shown in FIG. 1
  • FIG. 4 is an enlarged perspective view of a saddle type filaments guide employed in the plant shown in FIG. 1.
  • FIG. 5 is an enlarged elevational view of a pair of filaments-shake off rolls employed in the same plant.
  • FIG. 6 is an enlarged perspective view of a part of said roll for the illustration of an elastic sheath attached to each of the vanes of said roll.
  • FIG. 7 is a schematic view ofthe spinning and coagulating unit, especially showing the relative axial dimensions of its main constituting parts.
  • FIG. 8 is a schematic longitudinal section of the inner funnel employed in the plant shown in FIG. 1, especially illustrating main dimentional relationship.
  • FIG. 9 is a schematic longitudinal section of the unit shown in FIG. 3, especially showing the main relative dimensions thereof.
  • FIGS. 10-14 are shematic explanatory figures illustrative of a plurality of different embodiments of the unit(s) shown in FIG. 3.
  • FIGS. 15-18 are charts for showing several test results.
  • FIGS. 19-20 are schematic views for showing-main dimensional ratios of the spinning units of conventional comparative design.
  • numeral 1 denotes a spinneret-funnel assembly of the double funnel type comprising a spinneret 2, an inner funnel 4 and an outer funnel 5, as shown most clearly in FIG. 2 on an enlarged scale relative to that of FIG. 1.
  • the spinneret 2 is provided with a number of fine extrusion orifices 3', each of which has a bore diameter of 0.8 mm in the case of manufacture of cuprammonium filaments by way of example.
  • Inner funnel 4 and outer funnel 5 are cocentrically arranged with each other, the inner funnel being spaced at a vertical distance A below the spinneret 2 when measured from the lower surface of orifice plate 3 formed with said extrusion orifices 3, to
  • the inner funnel 4 consists of a funnel proper 4a and a reduced tail pipe 4b which protrudes downwards from interior space of outer funnel 5 through a bottom closure member 7 which is made of a sealing material such as rubber or the like and closes at the most reduced lower end of the outer funnel 5 which is fitted at its upper and most enlarged end 5a with an inlet pipe 6 for supply of a first coagulation bath liquid from a certain supply reservoir by a supply pump not shown.
  • Numeral 8 denotes generally a unit for providing a liquid braking effect upon the entrained liquid by the extruded and partially coagulated filaments which emerge from the assembly 1 and shown by a single line at 13 only for simplicity, through the way of spraying a second coagulation liquid as will be described more in detail hereinafter.
  • the unit 8 is shown in FIG. 3 more in detail.
  • This unit 8 comprises an inside guide funnel 9 and an outer boxshaped casing member 10. concentrically arranged thereto and fitted with an inlet opening 11 which is connected through a feed pump to a certain supply reservoir, although not shown only for simplicity.
  • the inside guide funnel 9 is formed at its intermediate part between its upper and lower extremities with male threads 9a by which the casing member having corresponding female threads 10b is fixedly attached to the guide funnel 9 and by the help of a nut 43.
  • the funnel guide 9 consists of a funnel head 9a and a tail pipe 9b concentrically extending downwards therefrom and made integral therewith a ring hollow liquid space 10a being formed around the tail pipe 9b and within the interior of said casing member 10.
  • the lower end of tail pipe 9b is bevelled at its outer peripheral surface as shown at 90 in FIG. 3, so as to represent a sharp ring edge at the lower extremity of the tail pipe.
  • the casing member 10 is formed integrally with a depending hollow cone-shaped projection 100 which forms, in turn, in combination with the oppositely arranged bevelled surface 90 a reducing ring-shaped nozzle opening 12, so as to inject a thin liquid ring jet 23 towards the running bundle of parallel and continuous filaments 13.
  • the included angle of the thus provided ring nozzle 12 is shown at 0 in FIG. 3. This angle 0 may be about 150 as a recommendable value.
  • a lower funnel 14 is fixedly positioned at a substantial distance from the unit 8. For simplicity, however, fixedly positioning means of this lower funnel 14 have been omitted from the drawing. This is applied to said unit 8.
  • the funnel 14 is shaped in its cross-sectional configuration into a cup which represents'a bottom outlet opening shown at 14a.
  • Numeral 15 represents a stationally arranged guide bar which serves for guiding the filaments 13 so as to deflect their passage from the vertical to a substantially horizontally extending one for leading them to a saddle type stationary filamentsguide 16.
  • the bar 15 may be an elongated roller under occasion.
  • the saddle guide 16 is shown more specifically in FIG. 4 which guide is made preferably a high wear-resisting ceramic material such as sintered titanium oxide.
  • This guide 16 is formed with a thin filaments passage groove 16a on its outside surface and along its concave valley as shown and with a liquid-receiving blind hole 16b so as to receive a conventional liquid serving for the regenerating purpose as is well known, from a stationally supply nozzle 24positioned 'above said opening 16a at a small distance.
  • a plurality of this kind of saddle guides may be used in a lateral row relative to the filaments passage extending between the guides 15 and 16.
  • FIG. 5 a pair of multivane type cooperating rolls l7 and 18 are shown. These vanes are generally and commonly shown at 17a and 184, respectively, having respective shafts 44 and 45 which are rotatably supported by antifriction bearings, not shown. These rolls 17 and 18 are serves for shake-off service for the supplied filaments, which means that the filaments are fed in their tensioned state and shaked off by the action of the cooperating vanes 17a; 18a of the rolls 17 and 18 so as to occupy a slackened and complexedly looped state upon a travelling pervious endless belt 19 which may preferably be a wire net band or a perforated one, as the case may be.
  • a travelling pervious endless belt 19 which may preferably be a wire net band or a perforated one, as the case may be.
  • Each of the vanes 17a; 18a together with their respective rolls 17 or 18 is made preferably of stainless steel and fitted with a sheath 25 made of a resilient material such as rubber, plastic material. According to our practical experiment, the provision of this resilient or elastic sheath 25 to each vane 17a or 18a has a most important role for the purpose of the invention.
  • the stacked filaments on the travelling primary belt or conveyor 19 is reversed up to down as a whole and placed on a secondary pervious conveyor 27 which may be advantageously an endless wire net belt or perforated band.
  • the conventional spinning solution such as for use in the cuprammonium filaments is fed through the pipe 21 into the spinneret 2 and extruded from the extrusion orifices 3'.
  • the primary bath liquid, warmed water in this specific embodiment, kept at 20 -C, is supplied from inlet 6 and led to flow through the inside funnel 4, at a rate of 0.2 0.6 m lkg of filaments.
  • the filaments 13 are delivered from the tail end of the pipe 4b, together with the down-flowing primary bath liquid.into the liquid brake and spray unit 8 and led to the bore of the inner funnel'9. At the end of this filaments passage through the unit 8, the filaments are impinged upon by a thin ring film-shaped jet of secondary coagulation bath liquid which is again warmed water in this specific embodiment, being kept at 40 C and fed at a rate of 0.3 0.8 m per kg of the filaments.
  • the included angle 6 bath of the cone-ring shaped bath liquid jet amounts generally to 20
  • the feed rate of the filaments may safely amount to 400 500 m per min.or still higher.
  • the entrained liquid will impinge upon the liquid pool contained in the lower funnel 14 and will disturb the liquid pool. This pool is naturally, but kept at a constant level in the funnel by adopting an overflow means, not shown.
  • a bath liquid supply means may also be provided for feeding it to the funnel 14 with the second bath liquid or a different one, although the inlet opening and the like supply means have been omitted from the drawing only for simplicity and on account of its very popular nature.
  • filaments breakage in this zone, or a later generation of mass fluffs may be unacceptably increased. This is one of the predominant main reasons which have inhibitted a substantial increase of the spinning'velocity.
  • the entrained bath liquid can, to a surprising degree, invade in to the liquid pool in the lower funnel and will assure a sufficient and even coagulation of the filaments under being subjected to coagulation.
  • the thus coagulated filaments are delivered from the bottom opening 14a of the funnel 14 together with the downflowing combined stream of the primary and secondary bath liquids.
  • the pin 15 serving the deflecting the filaments passage and for separating the entrained bath liquids therefrom in a physical way was referred to stationary only for convenience of the disclosure, the pin is made into a rotary or movable one and fitted with a liquid cleaning device for removal of deposited copper hydroxide as appeared.
  • the whole surface of the guide pin 15 is always kept in a clean and neat condition.
  • such rotary or the like pin-drive means, and the cleaning device serving for this purpose are highly conventional, so that the details thereof have been omitted from the drawing.
  • the filaments are conveyed to the saddle guide 16 so as to travel along the narrow passage 160 was already referred to hereinafter.
  • the filaments formed in a bundle are brought into contact with a bath liquid which may preferably of the same kind to the secondary one which is being continuously fed from a certain supply source, not shown, through nozzle 24 to the reception opening 16b.
  • the liquid gathers automatically to the area of filaments guide passage 16a on account of the specifically selected saddle guide 16 and for performing the final coagulation step to the travelling filaments, although shown only schematically in FIG. 1, but, not shown specifically in FIG. 4.
  • the thus coagulated filaments 13 are lead between the pair of vane type shake-off rolls 17 and 18, thereby these filaments being subjected to vibrations so as to represent wavy forms in the space under the action of mutually and partially engaging vanes 17a and 17b of these rolles, as shown at 13a in FIG. 5. Therefore, the filaments range 13 is kept under tension by subjecting to a considerableamount of frictional resistance provided by the partial engagement of these vanes, while the leading range of the filaments is perfectly loosened. Therefore, this roll pair acts as the filaments state converter expressed in the above sense. Then, the filaments 13a are placed on the travelling pervious first conveyor 19 in a perfectly loosened state. The rolls 17 and 18 are rotated in the opposite directions as shown by small respective arrows P" and 0", so as to, naturally feed the loosened state filaments 13a travel downwards.
  • the first group comprises steel or the like metallic material
  • the second group comprises semisoft and elastic materials such as rubber, plastics and the like.
  • vanes are made of a semisoft elastic material such as rubber, it has been observed that droplets are continuously and effectively driven off from the outer edge of each vane under the influence of the rotating rolls at a high speed, when observed through a high speed cinematograph.
  • Other materials serving for this purpose are soft P. V. C., soft silicone resin and the like elastomers. In this way, the disadvantageous filaments entangling phenomenon could be perfectly obviated with superior results.
  • the thus shaked-off, loosened and wavy filaments 13a are placed on the primary conveyor 19 on its upper travelling layer of conveyor 27 as shown by a small arrow B and substantially in a thick and loose layer or sheet, the thickness of which can be adjusted by modifying the traveling speed of the primary conveyor 19 which can be referred to a filaments position conversion means".
  • a filaments position conversion means In parallel to the lower travelling layer (see arrow B) and at a small gap distance therefrom,
  • This conveyor is denoted main or secondary conveyor 27. Although not shown, there is provided conventional means for modify the travel speed of the conveyor.
  • Numeral 26 denotes in a highly simplified manner a liquid injector which gives a liquid injection for fixing provisionally the shake-off state of the filaments layer 130 formed on the primary conveyor for fixing its loosened texture by supplying a proper amount of divided liquid thereamong.
  • the secondary conveyor 27 covers sufficiently the whole travel range of the primary conveyor, and the loosely textured filament layer or sheet 13a is transferred as a whole and in an undisturbed manner onto the upper travelling layer of the secondary conveyor 27 and thus conveyed through a series of after-treating zones 41 and 42.
  • the zone 41 consisting of a travelling endless wire net band shown in a highly simplified way and contains a conventional acid-treating section 28; a cold water washing section 29, a hot water treating section 30; a de-watering section 31, and an oiling section 32 and a de-oiling section 33.
  • a conventional acid-treating section 28 a cold water washing section 29, a hot water treating section 30
  • a de-watering section 31 a de-watering section 31
  • an oiling section 32 and a de-oiling section 33 there are provided two pairs of guide rollers 31 and 35 for guiding the conveyor 27 in a suitable way.
  • a similar endless conveyor 42 defines a further zone which contains a tunnel dryer section 34 and a humidifier section 35.
  • a take-up position control section 36 (which may be of the photo cell system although not shown) is provided after the section 35.
  • warping sections 37 and 38 are also provided for effecting wind up of the thus properly oriented or warped filaments by a winder 40 through a lubricating and bundling section.
  • a single line represents a loose textured mat like sheet 13b which contains, however, a large number of, for instance 300, bundles of multifilaments supplied from a corresponding number of spinning and coagulating units, each comprising main constituents l, 8, 14, and 18.
  • the endless band 41 constitutes a kind of scouring cover net or cloth and the next endless band 42 constitutes a kind of drier cover net or cloth.
  • These cover nets efficiently press by their lower side travelling layers the loosely textured mat-like filaments layer 13b positioned on the secondary conveyor 27 at respective zones 41 and 42 for protecting the layer against otherwise possible disturbances by pouring several different scouring liquids and air-agitating effects by the action of drier fans, not shown.
  • the filaments are extruded, coagulated and then after-treated in succession until they will have been wound up into cones, cheeses or the like commercializable form, continuously even at a high spinning and processing speed such as 500 m per min. or even still faster.
  • EXAMPLE 1 A conventionally prepared cuprammonium cellulose spinning solution having a composition of cellulose concentration: 10 wt. ammonia content 7.2 wt. and copper content 3.6 wt. was used and spun as in the aforementioned way to cuprammonium rayon filaments, total denier 60; monofilament denier 1.3.
  • the primary coagulation bath liquid, 42C was supplied at a feed rate of 0.32 m /kg of filaments and the extruded and partially coagulated filaments 13 were conveyed through the hydraulic braking and secondary bath liquid injecting unit 8, the including cone angle 0 of the jet mounted to 60.
  • the feed rate of the secondary bath liquid, C amounted to 0.5 m lkg of filaments.
  • Liquid was separated from the filaments by contact with the movable type difrector pin 15.
  • a dip treatment was made for the filaments by use of an aqueous, 10 percent sulfuric acid solution on the saddle guide and led to pass between'the pair of vanetype shakeoff rolls. Seaths were of natural rubber of hardness 60. Roller revolutions were 397 r.p.m. By use of these vane type shake-off rollers, total 15,000 hours of operation could be effectively and continuously performed without appreciable generation of filaments breakage and/or mass fluffs, when counted on total spinning units.
  • Dry strength 2.0 g/d; dry elongation rate: 1 1.5 percent; wet strength: 1.4 g/d; wet elongation rate: 18.5 percent; generation rate of mass fluffs: 0.5 per 10 m, which means a rather favorable result relative to those of conventionally prepared cuprammonium rayon filaments.
  • the length L (see, FIG. 7) as measured between the lowermost part of the unit 8 and the positioning level where the movable deflector pin 15 (see, FIG. 1 as well as the conditions such as feed rate and temperature of the secondary coagulating bath liquid.
  • the first combination of L and the like said above influences substantially upon the spinnability of the filaments, while the second combination of L and the like said above influences substantially upon the coagulation properties of the filaments.
  • the ratio: 1 /1 must preferably be chosen to l 5, l, and 1 being shown in FIG. 7.
  • d must preferably be equal to (one-halfone-fifth) X d d, and d being shown in FIG. 8.
  • the coagulation of the filaments can be suppressed to a minimum degree, and it is better to use the spinning solution for uniformly stretching the extruded filaments. Therefore, and additionally considering the economy of the operational cost of the manufacturing plant, the feed rate of the primary coagulation bath must preferably reduced to a possible minimum and the operating temperature thereof must preferably be a possible lowest value.
  • the operating temperature of the primary bath liquid must be increased to a certain appreciable level, leading definitely to generate the fouling deposits on the inside wall surface of the tail pipe of the inner funnel by the separated compounds from the filaments. Should this occur a continuous and effective spinning operation could be substantially disturbed, and under extreme conditions, the spinning may be brought into a dead stop, when the operational period has elapsed for a considerably long time. Additionally, uneven stretch effects may be invited among the filaments under manufacture.
  • the operating conditions to maintained within the inner funnel may vary with occasionally employed spinning velocity, compsotion of the spinning solution, total and filament denier and the like data, the following ranges of operating factors may preferably be adopted in the case of spinning of cupranimonium filaments at a spinning velocity of 500 1,000 m per min.
  • feed rate of primary coagulant 300 3,000 0.0. per
  • operating temperature thereof: 60C.
  • the recommendable data for spinning cuprammonium filaments at a spinning velocity of 500 1,000 m per min. may preferably be:
  • the bore diameter d, of funnel 9 must be so choosen that the filaments can not be brought into contract with the bore wall surface during passage of the filaments therethrough.
  • the ring cone jet must be directed towards the downwardly travelling filaments group as a center.
  • the angle 0" must be selected preferably to 20 150, as was referred to.
  • the recommendable condition relative to the spinning velocity was referred to hereinbefore.
  • FIGS. 10 14 several embodiments of concentric arrangement of one or more jet streams by use of a single or a plurality of jet injectors are shown. A glance at these figures, the design and operational modes of the jetting means can easily be understood without any further analysis thereof.
  • FIG. 17 relationship between spinning filament tension and L, is shown. Relationship between spinning filament tension and L, is shown in FIG. 18.
  • the data L, and L influence considerably upon the spinnability and coagulability of the wet-spun and coagulated filaments.
  • the length L In order to increase the spinning velocity, the length L, must preferably increased when saying in the general sense. On the contrary, for increase of coagulability, the length L must be increased correspondingly.
  • two or more braking injectors may be arranged in series to each other along the travel passage of the filaments for allowing to inject different braking jets in two or more stages and under differently adopted injecting conditions.
  • COMPARATIVE EXAMPLE A conventionally prepared cuprammonium cellulose spinning solution having a composition of: cellulose content 10 wt. ammonia content 7.2 wt. and copper content 3.6 wt. were wet spun by means of conventional comparative spinning units as shown in FIGS. 19 and 20 and compared the results with those obtained according to this invention.
  • the comparative results are shown in Table 1(A) and Table 1(B) which is a table to be jointed together.
  • the properties of the filaments prepared according to the inventive teachings although the spinning velocity was selected to an incredibly high value ranging from 500 to 800 m per min., a coagulability which is comparative to the conventional value could be realized. Strength and elongation rate were also similar to those conventionally obtained. Fluff formation rate amounted to very favorable values.
  • each of the said sheath 25 may be replaced a coated layer of elastomer as a modification in FIG. 6.
  • a process for the continuous high speed wet spinning of a continuous yarn comprising extruding downwardly a plurality of filaments through a first coagulating bath liquid in a funnel assembly, passing the extruded filaments and bath liquid downwardly through the lower end of said funnel assembly into atmospheric air, guiding the partially coagulated filaments and entrained bath liquid through a liquid brake bath liquid prior to passage through a second coagulating bath liquid in a second funnel assembly, guiding the filaments through and between a pair of positively driven vaned rolls for vibrating the filaments to remove entrained bath liquid and to relax the tension of said filaments prior to deposition on a pervious travelling collector.
  • a process as set forth in claim 1 comprising removing bath liquid deposited on said vaned rolls by the passage and vibration of said filaments therebetween by centrifugal force due to the rotation of said rolls to prevent the wet attachment of said filaments onto said vaned rolls.

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  • Mechanical Engineering (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US94468A 1969-12-02 1970-12-02 High speed wet spinning technique Expired - Lifetime US3689620A (en)

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US3833438A (en) * 1972-08-30 1974-09-03 Asahi Chemical Ind Process for the manufacture of a non-woven web of continuous filaments through the wet stretch spinning method
US4159299A (en) * 1976-04-06 1979-06-26 Serkov Arkady T Method for the production of rayon
US4298565A (en) * 1980-02-12 1981-11-03 E. I. Du Pont De Nemours And Company Spinning process
US4562110A (en) * 1981-08-18 1985-12-31 Tong David Philip Process for the production of alginate fibre material and products made therefrom
US5254303A (en) * 1990-02-16 1993-10-19 Akzo N.V. Method and device for manufacturing molded bodies
US20030160348A1 (en) * 2000-05-12 2003-08-28 Stefan Zikeli Method and device for the transport of continous moldings without tensile stress
CN103614797A (zh) * 2013-12-02 2014-03-05 宜宾丝丽雅股份有限公司 一种扁平丝的高速纺丝生产系统

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US4977654A (en) * 1989-04-18 1990-12-18 The Dow Chemical Company Process and apparatus for crimping fibers
US4979274A (en) * 1989-04-18 1990-12-25 The Dow Chemical Company Process and apparatus for crimping fibers
EP0506681A4 (en) * 1990-10-31 1992-12-02 The Dow Chemical Company Process and apparatus for crimping fibers
WO1992007982A1 (en) * 1990-10-31 1992-05-14 The Dow Chemical Company Apparatus and process for crimping fibers
DE4130860A1 (de) * 1991-09-17 1993-03-18 Akzo Nv Verfahren zum behandeln von faeden mit fluessigkeit
DE102006042159A1 (de) * 2006-09-06 2008-03-27 Ecoenergy Gesellschaft Für Energie- Und Umwelttechnik Mbh Verfahren und Vorrichtung zur Trocknung und stoffstromspezifischen Aufbereitung von durchlüftungsfähigen, grobkörnigen Abfällen
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

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US2046575A (en) * 1928-11-19 1936-07-07 American Bemberg Corp Production of cuprammonium silk by the stretch spinning process
US1828497A (en) * 1929-08-29 1931-10-20 American Bemberg Corp Spinning cuprammonium silk by the stretch process
DE559093C (de) * 1931-06-06 1932-09-15 Edwin Schurz Vorrichtung zur Herstellung von Kunstseidefaeden nach dem Streckspinnverfahren unterAnwendung mehrerer bewegter Faellfluessigkeiten
DE651171C (de) * 1932-07-24 1937-10-08 Wacker Chemie Gmbh Verfahren zur Herstellung wollaehnlicher endloser Fadenbuendel aus Cellulosederivaten oder regenerierter Cellulose nach dem Streckspinnverfahren mit bewegter Faellfluessigkeit
US2399258A (en) * 1943-03-20 1946-04-30 American Viscose Corp Novel filamentous product and method of making it
US2467541A (en) * 1943-07-03 1949-04-19 American Viscose Corp Method and apparatus for spinning artificial filamentous products
US2457350A (en) * 1943-07-07 1948-12-28 American Viscose Corp Method and apparatus for spinning artificial filamentous products
US2730757A (en) * 1952-12-24 1956-01-17 Beaunit Mills Inc Method and apparatus for producing novelty yarn
US3333040A (en) * 1962-12-17 1967-07-25 Asahi Chemical Ind Method of producing novelty yarn and apparatus associated therewith
FR1469243A (fr) * 1965-01-09 1967-02-10 Svu Textilni Liberec Procédé et installation pour la fabrication de structures fibreuses ou micro-fibreuses et produits conformes à ceux ainsi obtenus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833438A (en) * 1972-08-30 1974-09-03 Asahi Chemical Ind Process for the manufacture of a non-woven web of continuous filaments through the wet stretch spinning method
US4159299A (en) * 1976-04-06 1979-06-26 Serkov Arkady T Method for the production of rayon
US4298565A (en) * 1980-02-12 1981-11-03 E. I. Du Pont De Nemours And Company Spinning process
US4562110A (en) * 1981-08-18 1985-12-31 Tong David Philip Process for the production of alginate fibre material and products made therefrom
US5254303A (en) * 1990-02-16 1993-10-19 Akzo N.V. Method and device for manufacturing molded bodies
US20030160348A1 (en) * 2000-05-12 2003-08-28 Stefan Zikeli Method and device for the transport of continous moldings without tensile stress
CN103614797A (zh) * 2013-12-02 2014-03-05 宜宾丝丽雅股份有限公司 一种扁平丝的高速纺丝生产系统
CN103614797B (zh) * 2013-12-02 2015-07-01 宜宾丝丽雅股份有限公司 一种扁平丝的高速纺丝生产方法

Also Published As

Publication number Publication date
DE2059177A1 (de) 1971-06-09
FR2072796A5 (el) 1971-09-24
GB1337573A (en) 1973-11-14
US3765818A (en) 1973-10-16
CA956423A (en) 1974-10-22

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