EP0119521A2 - Procédé en continu pour la fabrication de fibres et fils en polyacrylonitrile - Google Patents

Procédé en continu pour la fabrication de fibres et fils en polyacrylonitrile Download PDF

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Publication number
EP0119521A2
EP0119521A2 EP84102121A EP84102121A EP0119521A2 EP 0119521 A2 EP0119521 A2 EP 0119521A2 EP 84102121 A EP84102121 A EP 84102121A EP 84102121 A EP84102121 A EP 84102121A EP 0119521 A2 EP0119521 A2 EP 0119521A2
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EP
European Patent Office
Prior art keywords
spinning
sliver
belt
crimping
washing
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.)
Granted
Application number
EP84102121A
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German (de)
English (en)
Other versions
EP0119521B1 (fr
EP0119521B2 (fr
EP0119521A3 (en
Inventor
Michael Dr. Bueb
Dieter Dipl.-Ing. Paulini
Edgar Dr. Muschelknautz
Wolfram Dr. Wagner
Herbert Dr. Gröschel
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Bayer AG
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Bayer AG
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Publication date
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Application filed by Bayer AG filed Critical Bayer AG
Publication of EP0119521A2 publication Critical patent/EP0119521A2/fr
Publication of EP0119521A3 publication Critical patent/EP0119521A3/de
Publication of EP0119521B1 publication Critical patent/EP0119521B1/fr
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Classifications

    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet

Definitions

  • the invention relates to a continuous process for the production of polyacrylonitrile threads and fibers, in which the spun material is produced by the dry spinning method.
  • Polyacrylonitrile threads are made by placing the polymer in a suitable solvent, e.g. Dimethylformamide dissolves and the spinnable solution is pressed through a spinneret. If the threads are solidified in a mostly aqueous liquid ("precipitant") by coagulation, this is referred to as the wet spinning process, if the threads are solidified by evaporation of the solvent in a hot air spinning shaft, this is referred to as the dry spinning process.
  • a suitable solvent e.g. Dimethylformamide
  • Post-treatment means the typical process steps of washing (solvent extraction), stretching, crimping, preparation, drying, steaming and cutting.
  • the spinning belt is placed in a spinning can after leaving the spinning machine and fed from many such spinning cans to an aftertreatment line.
  • Such an interruption between the spinning and post-treatment process has major disadvantages, for example high manufacturing costs, larger amounts of waste, emissions of solvents from the spinning cans, fluctuations in the product quality.
  • a process for continuous wet treatment, in particular washing of sheets of thread at high speed speeds of up to 150 m / min has become known from DE-A-1 760 004, with washing liquor being passed briefly transversely to the direction of movement of the thread sheets through the thread sheets at the beginning of the wet treatment and then for a longer time in order to remove the washable substances present in the fibers linger a treatment liquid. Between the individual liquid treatments is dewatered by squeezing. The thread coulters are transported on rollers. The devices required for this process are complex and do not allow speeds of over 150 m / min.
  • DE-A-2 359 882 discloses a process for dyeing dry-spun acrylonitrile polymer threads which still contain spinning solvents, the threads being washed, squeezed, dyed in a dye bath without stretching and then stretched while still in contact with the liquid dye mixture are followed by a usual drying.
  • the process which can be continuously connected to spinning, only allows maximum speeds below 100 m / min.
  • the object of the present invention was therefore to provide a continuous process for the production of polyacrylonitrile threads and fibers, in which the spun material is produced by the dry spinning method and is fed to the aftertreatment without interruption. It was a prerequisite that both the spinning take-off speed at the spinning shaft at about 150 m / min and a certain strip weight in the post-treatment stage of about 10 g / m should not be undershot so as not to question the economics of the process.
  • the cut fibers can be conveyed continuously from the cutting device in a pneumatic conveying line to the baling press and pressed therein into completely packed fiber bales.
  • the washing process is preferably carried out in such a way that washing liquid is sprayed onto the folded spinning belt in each stage, which for the most part seeps through the spinning belt and through the belt transport device within the step and is then collected below the transport device in a template and repeated several times under showering is attributed to the tape at the same level.
  • a suitable washing machine is described in DE-A-2 950 014.
  • the stretching can be carried out in one or more stages with a total stretching ratio of 1: 2 to 1: 5.
  • the stretching is preferably carried out in with Steam-fed pipes.
  • the preparation is preferably carried out in the crimping nozzle, the aerodynamic crimping device preferably being an injector operated with superheated steam or hot air.
  • the ruffling nozzle is preferably designed as an annular gap injector nozzle comprising an inlet part, a mixing section, a diffuser and a rod cage.
  • the vibrating trough, on which the crimp is then fixed and the shrinkage is removed, is preferably combined with the crimping nozzle to form a device part such that the crimping vapor escaping from the rod cage of the crimping nozzle can be used for damping in the damping step.
  • the dryer is preferably divided into several chambers, which can be brought to different temperatures, mostly decreasing temperatures in the direction of the thread.
  • the last chamber is fed with room temperature air as a cooling zone.
  • the vibrating troughs are preferably operated with an unbalance drive or electromagnetic excitation.
  • the vibrating trough of the washing stage preferably has bottoms made of perforated sheets, sieve fabrics or slotted sheets with 10 to 50% free cross-sectional area.
  • fiber ribbons are produced in the spinning shafts of a dry spinning machine (1) using the dry spinning process.
  • solvent e.g. dimethylformamide
  • the slivers are combined into a spinning belt (2) with a belt weight of 10-100 g / m and drawn off from the take-off unit (3) at a spinning speed of 150-400 m / min. After dry spinning, the fibers still contain approx. 5-20% solvent (e.g. dimethylformamide).
  • the solvent extraction is carried out in a washing machine (6), in which the folded spinning belt is washed in a countercurrent process in 10-30 stages with hot water at 60-95 ° C.
  • Coupling the continuous aftertreatment system to a running spinning machine can be difficult because it has to be done very quickly and requires special technology.
  • the spinning belt is first drawn off via the take-off unit (3) and placed in a loss spinning can.
  • the spinning belt is suddenly conveyed pneumatically with the aid of a compressed air-operated injector through an feed pipe (4) to the delivery unit (5) of the washing machine (6) and inserted into the delivery unit.
  • the spinning belt is then placed in a changeable depositing device in the form of a tube in a serpentine shape on the transport surface of the washing machine.
  • Sitting in the storage device an annular nozzle operated with washing water in order to pressurize the fiber sliver with water, to safely pull the fiber sliver away from the delivery mechanism (5) and to achieve a compact, compressed shape of the fiber sliver on the transport surface of the washing apparatus.
  • the folded spinning belt is transported on a perforated plate with side boundary walls at 1-4 m / min, the perforated plate being part of a vibrating trough trough.
  • the ratio of the delivery speed of the sliver into the washing machine to the conveying speed of the sliver cake in the washing machine results in a folding factor of approx. 50-150.
  • the sprinkling of the sliver cake within each stage must be carried out so gently that any floating of the fibers and any formation of tangles and matting is avoided. This is made possible by shower boxes mounted as close as possible to the sliver cake, from the bores of which the water flows only under the influence of gravity and hits the sliver cake at a speed of less than 1 m / s.
  • the necessary fresh water consumption is 0.7-2 kg water per 1 kg fiber.
  • the residence time of the sliver in the washing machine is 2-6 min. Before leaving the washing machine, the sliver is pulled smooth again and then mechanically dewatered by squeezing (7) to a water content of 30-50%.
  • the solvent content in the sliver after leaving the washer is approx. 1-2%.
  • the speed of entry into the drawing must be controlled so that the dissolving point of the sliver cake in the washing machine is always at the same point.
  • the measurement of the resolution point can be done with the help of light barriers or an inductive measuring probe.
  • the sliver is drawn in hot steam in two stages or stretching fields. Between the drive rollers (8) and (9) wrapped in the sliver, the sliver is stretched in the first stage in a ratio of 1: 1.1 to 1: 2 and at the same time heated by passing it through a 1-3 m steam pipe or steam duct (11) is guided, in which water vapor of 100-130 ° C is fed.
  • the main drawing takes place between the drive rollers (9) and (10) in a ratio of 1: 2 to 1: 6 in a 3 to 7 m long steam pipe or steam duct (12), into which steam of 100 to 130 ° C is fed.
  • the outlet speed on the drive rollers (10) is between 500-2000 m / min, depending on the spinning speed and the stretch ratio set.
  • low-solvent polyacrylic fiber tape can be stretched at high speeds if the stretching in the manner according to the invention is carried out in two stages in water vapor of at least 100 ° C.
  • a further embodiment of the invention is in a steam pipe stretched, in which an overpressure of 0.1-2 bar is generated with the help of pressure locks at the inlet and outlet, so that stretching can take place at saturated steam temperatures up to 130 ° C.
  • the threading of the fiber sliver into the steam pipe is carried out pneumatically with the aid of integrated injectors. The drawn sliver is then crimped at the same speed in a steam nozzle crimper (13).
  • Such an aerodynamic crimping device basically consists of an injector operated with superheated steam or hot air (5-16 bar and 50-210 ° C), through the effect of which the fiber sliver is continuously sucked into the nozzle and the fiber sliver is compressed or crimped in the nozzle becomes.
  • the sliver speed is reduced by a factor of 10-20, so that the compressed and crimped sliver leaves the crimping device at a speed of 50-200 m / min.
  • an aerodynamic crimping nozzle Compared to a mechanical compression crimping machine, an aerodynamic crimping nozzle produces a compression force that is 3 to 9 times smaller. It has surprisingly been found, however, that even a small compression force is completely sufficient to achieve a sufficiently intense crimp if the sliver is crimped in the presence of water vapor at 150-200 ° C.
  • the band cross-sectional area can be according to the relationship are determined, where M is the band mass in / kg7, L the band length in [m] and p the density of the fibers in [kg / m 3 ]. An essentially three-dimensional crimp is obtained.
  • slivers have to be wetted with a preparation in order to achieve the desired static and sliding friction properties of the fibers and to avoid electrostatic charges.
  • a preparation can be applied continuously to the sliver. It has surprisingly been found that the continuous metering of an aqueous preparation can take place directly in the curling nozzle (13) because the preparation is distributed evenly over all fibers by the effect of the steam flow.
  • the preparation is an approximately 5 to 20% by weight oil-in-water emulsion which is applied in an amount of 0.2 to 0.6% by weight oil, based on fiber solids.
  • suitable oils are known to the person skilled in the art.
  • the crimped and folded sliver cake is then transported on a vibrating trough without tension under the action of water vapor at 100-120 ° C. with a dwell time of 0.1 to 2 minutes through a steaming device (14).
  • the sliver After the process steps of washing, stretching, crimping, preparing and steaming, the sliver still has a water content of 30-60%. This water must be removed by a thermal drying process.
  • the crimped sliver is placed evenly on a belt dryer (15) with the aid of a traversing device and travels through the dryer on the transport pad at speeds of 0.1-3 m / min and residence times of 2-10 min. Drying takes place with the help of warm air at 60-180 ° C depending on the desired drying conditions.
  • the sliver Before cutting, the sliver must be cooled to temperatures below 50 ° C so that the crimp is not lost due to the cutting stress. Part of the dryer is therefore designed as a cooling zone (16). There the sliver is exposed to cold air.
  • the sliver cake is dissolved again by quickly removing the sliver at speeds of 500-1500 m / min. At this speed, the sliver is then cut into staple fibers of 30 to 150 mm in a cutter (17).
  • the fiber flakes are conveyed in a pneumatic conveying line (18) to the baling press (19) and pressed therein into completely packed fiber bales (20).
  • the speed of the cutting machine (17) must be controlled so that the sliver cake always dissolves in the same place at the end of the dryer. Otherwise the dryer would empty itself if the cutting speed was too high or overfilled if the cutting speed was too low. Such control can be implemented with the help of light barriers.
  • the ruffling nozzle (13) shown in Fig. 2 consists of an inlet part (21), the mixing section (25), the diffuser (26) and the rod cage (27).
  • the spinning belt (28) is sucked in through the mouthpiece (30).
  • a hot gas (29) is fed through the feed line (22) and the annular gap (23), heats and conveys the spinning belt.
  • the two bores (24) are used to feed the preparation.
  • the inlet part of the nozzle is preferably 50 to 100 mm long and has a diameter of 8 to 15 mm.
  • the gap width of the annular gap is in particular 0.2 to 0.6 mm.
  • the inflowing hot gas reaches speeds of 450 to 500 m / sec. at a temperature of 100 to 150 ° C.
  • the angle between entering hot gas and sliver is less than 20 °.
  • the subsequent mixing section has a length of 100 to 200 mm with a diameter of 9 to 16 mm.
  • the sliver is from the gas speed of 150 to 200 m / sec. transported through the nozzle.
  • the sliver opens in the diffuser, which is then braked and crimped in the rod cage.
  • the rod cage has a diameter of 20 to 30 mm and a length of 100 to 200 mm and consists of about 20 to 50 concentrically arranged steel rods of 0.5 to 2 mm thickness, which can be of the same or different lengths.
  • the hot gas escapes laterally through the rods.
  • Polyacrylonitrile with the composition 93.6% by weight acrylonitrile, 5.7% by weight methyl acrylate and 0.7% by weight methallylsulfonate and the K value 81 was obtained as a 30% by weight solution in dimethylformamide (DMF) spun using the dry spinning process.
  • the take-off speed at the spinning shaft was 240 m / min.
  • the single fiber titer was 10 dtex and the total undrawn sliver weight of the spinning sliver was 20 g / m. After leaving the spinning machine, the threads still had a DMF content of 17% by weight.
  • the spinning belt was washed in the folded state in a washing machine with 20 washing stages, which has a vibrating trough as a transport base.
  • the dwell time of the spinning belt in the wash was approx. 3 minutes, the wash water temperature was approx. 90 ° C., and the amount of fresh water used was 1 kg water / kg threads.
  • the spinning belt left the washing machine with a DMF content of 1% and a speed of 200 m / min.
  • the spinning belt was drawn in two stages in steam pipes with saturated steam at 100 ° C.
  • the stretch ratio of the first stage was 1: 1.3
  • the stretch ratio of the second stage was 1: 2.85 and the outlet speed was approx. 1000 m / min.
  • the sliver was crimped with a steam nozzle with 9 bar saturated steam.
  • the ruffling nozzle corresponded to FIG.
  • the inlet mouthpiece having a diameter of 9 mm
  • the mixing section having a diameter of 12.5 mm
  • the annular gap having a clear width of 0.39 mm with a total area of the annular gap of 15.2 mm 2 .
  • Water emulsion was added as a preparation in such an amount that 0.45% by weight of oil, based on fiber solids, was applied.
  • the total length of the crimping nozzle was 500 mm.
  • the rod cage consisted of 30 rods with a diameter of 1 mm.
  • the steam temperature was 121 ° C, the steam speed 480 m / sec.
  • the crimp cake was steamed in a steamer with the steam emerging from the rod cage of the crimping nozzle.
  • the residence time was 15 sec. In a steam atmosphere of about 100 0 C. After leaving the damper, the sliver still had about 40% of water and a boiling shrinkage of 2%.
  • the crimped and folded sliver was placed on a belt dryer with 4 drying chambers, which at a speed of 0.8 m / min. ran.
  • the air temperature was 150 ° C in the first three drying chambers and 20 ° C in the fourth chamber.
  • the residence time in the dryer was 3 minutes. After leaving the dryer, the sliver had only a water content of 1% and a temperature of 30 ° C.
  • the sliver was drawn off at 620 m / min, cut into staple fibers of 60 mm in length on a rotor blade and then packed in the baler to produce finished bales.
  • the polyacrylonitrile staple fibers produced in this way could be processed on the card at a card speed of 120 m / min.
  • the individual fibers had a titer of 3.3 dtex, a tensile strength of 24 cN / tex, an elongation at break of 30%, a residual solvent content of 0.1% and no vacuoles.
  • the crimp was 11.2% and the crimp resistance was 74.6%.
  • the crimped thread is hung at one end and loaded with a weight of 0.001 cN / dtex. Its length is 1 o .
  • the load is increased to 0.1 cN / dtex. Its length is now 1 1 .
  • the load is reduced again to 0.001 cN / dtex. Its length is now 1 2 .
  • the curl resistance follows 100

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)
EP84102121A 1983-03-11 1984-02-29 Procédé en continu pour la fabrication de fibres et fils en polyacrylonitrile Expired - Lifetime EP0119521B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3308657 1983-03-11
DE3308657A DE3308657A1 (de) 1983-03-11 1983-03-11 Kontinuierliches verfahren zur herstellung von polyacrylnitrilfaeden und -fasern

Publications (4)

Publication Number Publication Date
EP0119521A2 true EP0119521A2 (fr) 1984-09-26
EP0119521A3 EP0119521A3 (en) 1987-06-10
EP0119521B1 EP0119521B1 (fr) 1989-01-25
EP0119521B2 EP0119521B2 (fr) 1992-10-14

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ID=6193160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102121A Expired - Lifetime EP0119521B2 (fr) 1983-03-11 1984-02-29 Procédé en continu pour la fabrication de fibres et fils en polyacrylonitrile

Country Status (4)

Country Link
US (1) US4622195A (fr)
EP (1) EP0119521B2 (fr)
JP (1) JPS59168117A (fr)
DE (2) DE3308657A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832872A1 (de) * 1988-09-28 1990-04-05 Bayer Ag Trockenspinnverfahren mit heissluft bei spinnschachtleistungen groesser 20 kg pro schacht und stunde
EP0624666A1 (fr) * 1993-05-10 1994-11-17 R.K. Carbon Fibers, Ltd. Dispositif et procédé pour le frisage et la reticulation de fibres

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538871A1 (de) * 1985-11-02 1987-05-07 Bayer Ag Verfahren zur behandlung eines endlosen faserkabels
DE3702543A1 (de) * 1987-01-29 1988-08-11 Bayer Ag Verfahren und vorrichtung zur behandlung eines faserkabels
DE3832873A1 (de) * 1988-09-28 1990-03-29 Bayer Ag Hydrophile acrylfasern und -faeden mit verbesserten faerberischen echtheiten und querschnitten
DE3926857A1 (de) * 1988-09-28 1990-04-05 Bayer Ag Pan-trockenspinnverfahren erhoehter spinnschachtleistung mit ueberhitztem dampf als spinngasmedium
US5015428A (en) * 1988-09-28 1991-05-14 Bayer Aktiengesellschaft Pan dry spinning process of increased spinning chimney capacity using superheated steam as the spinning gas medium
DE3832870A1 (de) * 1988-09-28 1990-03-29 Bayer Ag (kontinuierliche) herstellung von acrylnitrilfaeden und -fasern aus restloesungsmittelarmem spinngut
DK0740907T3 (da) * 1995-05-03 2002-05-21 British American Tobacco Co Rygeartikel
DE19703924C2 (de) * 1997-02-03 1999-11-18 Heberlein Fasertech Ag Verfahren, Düse und Anlage zum Luftbehandeln von Filamentgarn
DE10220508B4 (de) * 2001-05-15 2008-08-21 Lurgi Zimmer Gmbh Verfahren und Vorrichtung zur Behandlung eines Fadens
DE10226291A1 (de) * 2002-06-13 2003-12-24 Neumag Gmbh & Co Kg Verfahren und Vorrichtung zum Präparieren eines synthetischen Filamentbündels
KR102400546B1 (ko) * 2017-01-26 2022-05-19 코오롱인더스트리 주식회사 고강도 폴리에스테르 원사의 제조 방법 및 그 제조 장치
CN112853516B (zh) * 2021-01-08 2021-12-17 温州国宏新材料科技有限公司 一种塑料编织袋制作成型方法
CN113969429A (zh) * 2021-12-02 2022-01-25 山东越神新材料科技有限公司 一种用干法腈纶工艺制备高性能大丝束碳纤维原丝的方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811409A (en) * 1952-12-31 1957-10-29 Eastman Kodak Co Spinning of acrylonitrile polymer fibers
FR1198455A (fr) * 1957-01-18 1959-12-08 Union Carbide Corp Procédé de filage de polymères vinyliques
DE1494553A1 (de) * 1965-03-02 1970-05-06 Boehme Chem Fab Kg Verfahren zur Herstellung von Fasern aus Polymeren oder Mischpolymeren des Acrylnitrils nach dem Trockenspinnverfahren
DE1760004A1 (de) * 1968-03-20 1971-09-09 Vepa Ag Verfahren und Vorrichtung zum kontinuierlichen Nassbehandeln von Fadenscharen
DE2359882A1 (de) * 1972-11-30 1974-06-06 Du Pont Faerben von acrylnitrilpolymer-faeden
EP0098477A1 (fr) * 1982-07-06 1984-01-18 Bayer Ag Procédé de filage à sec continu de fibres et de filaments d'acrylonitrile
EP0098485A2 (fr) * 1982-07-06 1984-01-18 Bayer Ag Procédé continu de filage à sec de fibres et filaments de polyacrylonitrile à retrait potentiel élevé

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US458060A (en) * 1891-08-18 Device for utilizing wave force
GB510282A (en) * 1938-04-27 1939-07-31 Courtaulds Ltd Improvements in crimping threads, filaments and the like
US2761754A (en) * 1952-06-07 1956-09-04 Celanese Corp Process for the production of acrylonitrile polymer fibers
US3091507A (en) * 1956-08-27 1963-05-28 Dow Chemical Co Method of preventing ring dyeing in aquagel acrylonitrile polymer fibers by steamingthe fibers
BE568354A (fr) * 1957-06-05
US3124631A (en) * 1961-03-22 1964-03-10 Process for providing high density dry spun
US3671619A (en) * 1967-03-08 1972-06-20 Monsanto Co Crimp reservation process
US3663676A (en) * 1968-01-24 1972-05-16 Du Pont Process for temporarily reducing the crimp index in bicomponent acrylic fibers
US3831233A (en) * 1972-02-09 1974-08-27 Richen Co Process for heat treating multi-component yarns

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811409A (en) * 1952-12-31 1957-10-29 Eastman Kodak Co Spinning of acrylonitrile polymer fibers
FR1198455A (fr) * 1957-01-18 1959-12-08 Union Carbide Corp Procédé de filage de polymères vinyliques
DE1494553A1 (de) * 1965-03-02 1970-05-06 Boehme Chem Fab Kg Verfahren zur Herstellung von Fasern aus Polymeren oder Mischpolymeren des Acrylnitrils nach dem Trockenspinnverfahren
DE1760004A1 (de) * 1968-03-20 1971-09-09 Vepa Ag Verfahren und Vorrichtung zum kontinuierlichen Nassbehandeln von Fadenscharen
DE2359882A1 (de) * 1972-11-30 1974-06-06 Du Pont Faerben von acrylnitrilpolymer-faeden
EP0098477A1 (fr) * 1982-07-06 1984-01-18 Bayer Ag Procédé de filage à sec continu de fibres et de filaments d'acrylonitrile
EP0098485A2 (fr) * 1982-07-06 1984-01-18 Bayer Ag Procédé continu de filage à sec de fibres et filaments de polyacrylonitrile à retrait potentiel élevé

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832872A1 (de) * 1988-09-28 1990-04-05 Bayer Ag Trockenspinnverfahren mit heissluft bei spinnschachtleistungen groesser 20 kg pro schacht und stunde
EP0624666A1 (fr) * 1993-05-10 1994-11-17 R.K. Carbon Fibers, Ltd. Dispositif et procédé pour le frisage et la reticulation de fibres

Also Published As

Publication number Publication date
US4622195A (en) 1986-11-11
JPS59168117A (ja) 1984-09-21
EP0119521B1 (fr) 1989-01-25
EP0119521B2 (fr) 1992-10-14
DE3476429D1 (en) 1989-03-02
EP0119521A3 (en) 1987-06-10
JPS6256242B2 (fr) 1987-11-25
DE3308657A1 (de) 1984-09-20

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