WO2019000057A1 - Procédé permettant d'obtenir de la rayonne à filaments de viscose présentant une masse linéique variant de manière cyclique appelée rayonne « flamme », installation pour la mise en œuvre de ce procédé et produit obtenu à l'aide de ce procédé et de cette installation - Google Patents

Procédé permettant d'obtenir de la rayonne à filaments de viscose présentant une masse linéique variant de manière cyclique appelée rayonne « flamme », installation pour la mise en œuvre de ce procédé et produit obtenu à l'aide de ce procédé et de cette installation Download PDF

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Publication number
WO2019000057A1
WO2019000057A1 PCT/BG2018/000029 BG2018000029W WO2019000057A1 WO 2019000057 A1 WO2019000057 A1 WO 2019000057A1 BG 2018000029 W BG2018000029 W BG 2018000029W WO 2019000057 A1 WO2019000057 A1 WO 2019000057A1
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WO
WIPO (PCT)
Prior art keywords
viscose
spinning
rayon
installation
filament
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.)
Ceased
Application number
PCT/BG2018/000029
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English (en)
Inventor
Gaetano Rimini
Penyo Grigorov PENEV
Lyusien Borisov ANGELOV
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E Miroglio Joint- Stock Co
Original Assignee
E Miroglio Joint- Stock Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by E Miroglio Joint- Stock Co filed Critical E Miroglio Joint- Stock Co
Priority to US16/623,764 priority Critical patent/US20200173058A1/en
Priority to EP18746561.2A priority patent/EP3645770A1/fr
Publication of WO2019000057A1 publication Critical patent/WO2019000057A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/20—Formation of filaments, threads, or the like with varying denier along their length
    • 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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/09—Control of pressure, temperature or feeding rate
    • 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
    • D01D13/00—Complete machines for producing artificial threads
    • 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
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • 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
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath
    • D01F2/16—Addition of dyes to the spinning solution

Definitions

  • the present invention concerns a method for obtaining viscose rayon with cyclically varying linear density called "flame" rayon yarn, an installation for the realization of this method, and a product, obtained using this method and this installation.
  • Viscose filament rayon is a part of various types of white or dyed fibers and yarns, as well as other fancy yarns widely used in the industry.
  • a thin/thick effect yarn provides a thin/thick effect by segmentwise stretching of a filamentary precursor yarn, which is combined with a fully-stretched filamentary precursor yarn so that the latter supports the former.
  • the combination can be effected by twisting, nub entanglement or winding of one yarn around the other.
  • Document EP 0848094 describes a fancy yarn, based on a process where a filament yarn which is not fully drawn in sections and with thick/thin zones is brought together with an effect filament over its whole length.
  • the filament yarn is fully drawn into an affect yarn.
  • an apparatus with at least one eddy jet or at least one winding spindle with a supply bobbin for effect filament where the filament are brought together, and a following drawing field for the combined yarn.
  • the combination of the two fibres is achieved through air blowing and pressing one of the fibres over the other or by joint rewinding of both fibres in one bobbin.
  • the main characteristic of the above-described known methods for obtaining of fancy yarn is that they are performed during textile processing of already spun fibres after their combination by means of various methods in order to result in a new combined yarn, generally defined as some kind of a fancy yarn, i.e. using two fibres to obtain a yarn different by type from the source fibres after the application of one or a couple of additional textile operations, using specially constructed technical means.
  • viscose rayon There is a technology for the production of viscose rayon which includes the following stages: mercerization, being processing of the initial pulp (cellulose) with a concentrated solution of sodium hydroxide (NaOH), resulting in alkali cellulose, which afterwards is subjected to destruction, i.e. aging, where the degree of polymerization is decreased. This is followed by temperature reduction and dosing of the alkali cellulose amount for the production of one batch of viscose. The next stage is carbon-disulphide treatment, which causes the alkali cellulose to transform into cellulose xanfhate, whose most important property is that it is soluble in diluted solutions of sodium hydroxide. The cellulose solution of one batch is then mixed and homogenized with the one from the previous and the following batch, deaerated, and filtered to remove the impurities. Then the viscose solution is fed under pressure for spinning to the spinning machines.
  • mercerization being processing of the initial pulp (cellulose) with a concentrated solution of sodium
  • the stage of spinning is performed as the viscose solution from a main pipeline under pressure is passed for spinning in a viscose pipe collector to each spinning machine, where by means of synchronously actuated dosing pumps equal quantities of the viscose solution from this viscose pipe collector are supplied to the spinnerets at each working position.
  • the viscose solution then passes under pressure into a spin bath where as a result of the chemical reactions in course transforms into freshly-spun cellulose filament rayon fibers with a specified /linear density/thickness depending on the quantity of dozed viscose solution .
  • the freshly-spun cellulose passes consecutively to the first and then the second spinning devices, and then it is arranged in the centrifuge. Further, the process is interrupted as when the centrifuge is filled up to a specific volume, the fiber between the first and the second spinning devices is cut off and wound only on the first one. Meanwhile the centrifuge is stopped, the formed in it rayon cake is taken out, and it is again put into operation. The fiber from the first spinning device is again transferred to the second one, and then passed into the centrifuge to obtain the next rayon cake.
  • the installation includes the range of technological operations and following units connected serially : mercerization unit, aging unit, unit for temperature reduction, a dosing unit for the amount of the alkali cellulose needed for the production of one batch of rayon; carbon- disulphide treatment unit - treatment of the alkali cellulose with carbon-disulphide to obtain cellulose xanthate, units for mixing and homogenization of the cellulose solution from one batch to the one from the previous and the following batch , deaeration unit and filtering units for removal of the impurities.
  • a pigment suspension is preliminarily prepared, which for the planned production cycle is stored in a special tank, it is dosed by means of a pump into the viscose and the mixture enters a homogenizer, thus the pigment or pigment particles are distributed uniformly throughout the entire volume of the viscose solution.
  • the coloured after the homogenization cellulose solution is fed under pressure to a viscose pipe collector for spinning in the spinning machine to which dosing gear pumps 22 are joined, actuated by one and the same power shaft 21 (fig. 3).
  • the classically equipped spinning machine actuating is arranged by the use of two electric motors.
  • First motor 40-1 powered by feeding unit 40-4 ,which through the first reduction gear 39-1 and the gear transmission system 39-3 is mechanically connected to the first spinning devices 27-1, second spinning devices 28-1 and power shaft 21 to which viscose solution dosing pumps 22 are joined.
  • the second electric motor 40-2 powered by the same feeding unit 40-4, through the second reduction gear 39-4 has a mechanical connection and transmits motion to the arranging device 39-5 , which transfers already spun filament rayon to the centrifuge 29-1 of the spinning machine 10.
  • the spinning stage is carried out as the cellulose solution from a main pipeline under pressure is fed into a viscose pipe collector to each spinning machine.
  • This pipeline being permanently filled up with viscose solution under pressure for the prevention of gas phase occurrence.
  • All viscose solution dosing gear pumps of a spinning machine have a common actuation by one and the same power shaft. The revolutions of this shaft defines the viscose solution quantity transferred by each dozing pump from the viscose pipe collector to the spinnerets at each working position. This uniformity of dosing of the viscose solution is a result of the specified and continuously controlled number of revolutions of power shaft to which viscose dozing pumps are joined.
  • the viscose solution coming out from the spinnerets enters a spin bath where, as a result of the chemical reactions in course, transforms into rayon filament fibers.
  • the freshly-spun cellulose as filament rayon fiber passes consecutively to the first and then the second spinning devices after which it is arranged in the centrifuge.
  • the centrifuge is filled up to a definite volume, the fiber between the first and the second spinning device is interrupted and wound only on the first one. Meanwhile the centrifuge is stopped, the formed in it rayon cake is taken out, and the centrifuge is put into operation again.
  • the rayon filament fiber from the first spinning device is again transferred to the second spinning device and passed to the centrifuge, thus starting the production of the next rayon cake.
  • the purpose of the present invention is to suggest a method for obtaining of viscose filament rayon with cyclically varying thickness/linear density/ and a product manufactured using this method, as well as an installation for the realization of the invented method, where fancy viscose filament rayon is obtained directly as early as the stage of the spinning of the rayon filament fiber without using additional stages or specially designed machines.
  • a method for obtaining of viscose rayon filament yarn with cyclically varying thickness/linear density including the following stages: the initial cellulose undergoes mercerization, being processing with a concentrated solution of sodium hydroxide (NaOH), resulting in alkali cellulose, which afterwards is subjected to destruction, i.e. aging, to decrease the degree of polymerization. This is followed by temperature reduction and dosing of the alkali cellulose amount for the production of one batch of viscose. The next stage is carbon-disulphide treatment during which the alkali cellulose to transforms into cellulose xanthate, whose most important property is that it is soluble in diluted solutions of sodium hydroxide.
  • NaOH sodium hydroxide
  • the cellulose solution of one batch is mixed and homogenized with the one from the previous and the following batch, deaerated, and filtered several times to remove the impurities. Then the viscose solution, with is passed through a viscose pipe collector under pressure to the spinnerets of the spinning machine for spinning .
  • constantly synchronizated viscose solution supplying/feeding/ and spinning devices actuation is interrupted ,as first and second spinning devices and arranging freshly spun yarn in centrifuge system are actuated by the use of existing power feeding installation ,motors and reduction gear groups named as the first power feeding and actuating installation.
  • new power feeding and actuating installation is added to the same spinning machine named second power feeding and actuating installation which work runs by a control unit (inverter) and by the use of which power shaft and joined to it viscose solution dozing pumps can be actuated independently of first and second spinning devices actuation.
  • power shaft actuation do not depends on spinning and arranging freshly-spun filament rayon devices actuation anymore and quantity of viscose solution dozed to the spinnerets for spinning could be changed independently of spinning and arranging devices work.
  • the viscose solution coming out from the spinnerets enters a spin bath, where as a result of the chemical reactions in course transforms into rayon filament fibers.
  • the freshly-spun cellulose filament fibers are passed to the located at each working position first and then second spinning devices, and then transported and arranged in the centrifuge at the same working position.
  • the centrifuge is filled up to a specific volume, the filament fiber between the first and the second spinning devices is cut off and wound only on the first one.
  • the centrifuge is stopped, the formed in it rayon cake is taken out, and the centrifuge is again put into operation.
  • the fiber from the first spinning device is again transferred to the second one, and then passed into the centrifuge to obtain the next rayon cake.
  • the method of production of dyed in mass viscose filament rayon with cyclically varying thickness/linear density involves mixing of the viscose solution with a preliminarily prepared pigment suspension, consisting of one or a couple of pigments, homogenization of the mixture where the pigment particles are uniformly distributed throughout the entire volume of this solution, which afterwards is fed for spinning and the stages as above described process according to the invention , followed by the next already known operations.
  • the installation for the production of filament yarn with cyclically varying thickness/linear density - named flame viscose filament rayon includes the following stages and units consecutively connected as: mercerization unit, aging unit, unit for temperature reduction, a dosing unit for the amount of the alkali cellulose needed for the production of one batch of rayon; carbon-disulphide treatment unit, units for mixing of the cellulose solution from one batch to the one from the previous and the following batch to homogenization and for deaeration, filtering unit for removal of the impurities, a pipe collector to the spinning machine to which a range of working positions are added, each of them equipped with a first and a second spinning devices and a centrifuge where to obtain a rayon cake.
  • the first electric motor through the first reduction gear and gear transmission system, is connected for actuation of the first and the second spinning devices, and the second electric motor powers the arranging device to the first centrifuge.
  • the first and the second electric motors are powered by the first power feeding unit.
  • a second power feeding installation is added includes a new third electric motor powered by the new second power feeding unit , connected to an inverter control system, which through an additional reduction gear group is connected to the power shaft and actuating the viscose solution dosing pumps only.
  • a preliminary invented operation program is set, which defines the frequency and range of change of the revolutions of the power shaft actuating the viscose dozing pumps independently from the operation of the other spinning devices.
  • the dozing pumps revolution deviations change the cellulose solution quantity supplied for spinning and, as a result of this, also the thickness/linear density of the spun rayon filament fiber.
  • washing operations unit where the freshly-spun viscose rayon is treated with different solutions for removal of the impurities resulting from the spin bath and the chemical reactions during spinning
  • unit for centrifugation of the semifinished product drying unit, conditioning unit, rewinding unit, quality control unit (18) and storage unit (19).
  • the installation for the production of dyed in mass filament yarn with cyclically varying thickness/linear density includes an added to the described up construction of the spinning machine an individual or group dyeing installation. It includes a storage tank for a preliminarily prepared pigment suspension, added pigment suspension dosing pump and a homogenizer connected to the existing viscose pipe collector from which through the dosing pumps the dyed in mass viscose solution is fed for spinning to the spinnerets of the spinning machine, to which are connected the above-described, according to the invention, first power feeding installation with its pertaining devices, and invented new second power feeding installation with its pertaining devices.
  • the viscose solution from the main pipeline before being passed to the viscose pipe collector, is fed to the homogenizer.
  • the pigment suspension is introduced from the tank dosed by means of a pigment suspension dosing pump.
  • the viscose solution and the suspension are mixed and homogenized, and then passed to the viscose pipe collector part of spinning machine.
  • From there the already dyed solution by the use of viscose dosing pumps is fed for spinning to the spinnerets.
  • the dyed in mass viscose solution coming out from the spinnerets enters a spin bath, where as a result the chemical reactions in course is transformed in fibers.
  • the final result of this spinning according to the invention is dyed in mass viscose filament yarn with cyclically varying linear density/thickness - so called (flame) dyed in mass filament rayon.
  • the freshly-spun cellulose as filament fibers passes consecutively to the first and the second spinning device, and then arranged in the centrifuge.
  • the centrifuge is filled up to a specific volume, the fiber between the first and the second spinning devices for each working position is interrupted and wound only on the first spinning device. Meanwhile the centrifuge is stopped, the formed in it rayon cake is taken out, and the centrifuge is again put into operation.
  • the fiber from the first spinning device is again transferred to the second one and then passed into the centrifuge to start the production of the next rayon cake.
  • This installation includes an added to the first a second pipe collector for viscose, powered by the same motor actuating the first and operating synchronously with it.
  • the second viscose pipe collector is connected to a second individually operating dyeing installation, as the dosing pumps supplying viscose for spinning to the spinnerets, for each pair of working positions are fed with viscose for spinning from the separate viscose pipe collectors in the following way: a dosing pump at the first working position is supplied with viscose from the first pipe collector, and the neighbouring one, i.e.
  • the second working position dosing pump is fed with viscose by the second pipe collector. The same is then repeated for each successive pair of working positions.
  • a viscose solution in one colour is spun, and on the rest - a viscose solution in a different colour, thus obtaining differently dyed viscose filament fiber.
  • the filament fibers Due to the program set in the control unit, apart from being coloured differently, the filament fibers will also be with cyclically varying thickness/linear density.
  • the spun on the neighbouring working positions differently dyed in mass rayon filament fibers instead of being separately taken by the first and second spinning devices are joined together only to the first spinning device of first working positions. After that, the two differently dyed and already combined fibers are transferred together to the second spinning device at the first working position and then to the centrifuge at the same first working position.
  • the result of this innovative way of spinning is that the bicolor and (flame) filament yarn is obtained directly as early as the stage of the first spinning device and later viscose filament rayon with cyclically varying thickness/linear density and dyed in two colours as cake is taken out from centrifuge.
  • An advantage of the method and installation suggested is the direct production of raw white bright or dyed in mass viscose filament rayon with cyclical variation of its linear density/thickness, i.e. flame viscose filament rayon.
  • Figure 1 illustrates the sequence of the processes in the classical production of raw white bright or dyed in mass viscose filament rayon.
  • Figure 2 presents the classical unit structure of installation 10-1, i.e. the installation performing the dyeing in mass of the viscose filament rayon.
  • Figure 3 illustrates a design of the classical actuation of the spinning machine for the production of raw white bright or dyed in mass viscose rayon filament rayon with uniform thickness/linear density.
  • Figure 4 presents the actuation of the spinning machine according to the invention.
  • Figure 5 illustrates the variation of the linear density /thickness/ of the viscose filament rayon from one cake, whose spinning is performed following the classical spinning procedure, i.e. of the actuation of the spinning machine's units.
  • the rayon fiber length of investigated rayon cake On the abscissa is marked the rayon fiber length of investigated rayon cake, and the ordinate (Y-axis) shows the variation of the fiber linear density / thickness presented in tex.
  • This figure gives a clear concept of the way the rayon fibre thickness changes from start to the end of a centrifugal filament rayon cake using the classical spinning procedure.
  • Figure 6 illustrates the variation of the linear density/ thickness of a viscose filament rayon filament from cake whose spinning follows the innovative method and actuation procedure of the spinning machine's units according to the invention.
  • Figure 7 illustrates the installation, which added to Figure 4, enables the production of bicolour rayon with cyclically varying thickness (flame one) simultaneously.
  • the installation for the production of raw white bright or dyed in mass viscose filament rayon presented on Figure 1 includes the following units, consecutively connected following the technological operations as: unit 1 for mercerization - treatment of the initial pulp (cellulose) with a concentrated solution of sodium hydroxide, unit 2 - for aging, where as a result of the process of destruction alkali cellulose is obtained, i.e.
  • unit 3 temperature reduction
  • unit 4 dosing of the alkali cellulose amount for the production of one batch of viscose
  • unit 5 for carbon-disulphide treatment of the alkali cellulose to obtain cellulose xanthate
  • units 6 and 7 for mixing and homogenization of the cellulose solution of one batch to the one from the previous and the following batch and deaeration
  • unit 8 filtering to remove the impurities.
  • Unit 9 for the preparation of a dyeing suspension and unit 10-1 for viscose solution dyeing could be connected to spinning machine 10 if dyed in mass rayon filament rayon have to be produced. After the spinning, the freshly-spun viscose rayon is treated in unit 12 with various solutions, prepared in unit 13 to remove the residues from the spin bath and chemical reactions after the spinning.
  • units 14, 15, 16, 17 and 18 for centrifugation, drying, conditioning, rewinding, quality control inspection and packing as finished production to be stored in unit 19.
  • an individual dyeing installation 10-1 is connected to the spinning machine 10 in order to obtain dyed in mass filament rayon.
  • it includes a pigment suspension storage tank 30, pigment suspension dosing pump 31, a control unit 34 for the dosing pum 31 control, a homogenizer 32, where the pigment or pigments particles have to be mixes with viscose solution and distributed uniformly throughout the entire volume of it; reduction geared electromotors 35 which guarantee the components mixing inside of homogenizer 32 and suspension circulation in suspension storage tank.
  • From the main pipe collector 36 the cellulose solution passes into the homogenizer 32 through the local viscose pipeline 37.
  • the already dyed after the homogenization solution fdls up under pressure the viscose pipe collector 38, which supplies dyed in mass viscose to all the working positions of the spinning machine 10.
  • feeding unit 40-4 powers the first and the second electric motors 40-1 and 40-2, as motor 40-1 through reduction gear 39-1 and the gear transmission system 39-3 continues actuating the first 27-1 and second 28-1 spinning devices, and the motor 40-2 through reduction gear 39-4 keeps actuating the fiber arranging in the centrifuge 29-1 device 39-5 of the spinning machine 10.
  • a third electric motor 40-3 powered by a second feeding unit 40-7, as the electric motor 40-3 through reduction gear 39-2 actuates the power shaft 21 and the viscose solution dosing pump 22 joined to it.
  • the third electric motor operation is controlled by the control unit 42.
  • the actuation of the power shaft 21 is performed independently from the powering of the spinning devices.
  • a change of the revolutions of the power shaft takes place - when the number of revolutions is higher, a greater amount of viscose is being dosed, so the fiber spun will be thicker.
  • a smaller amount of the solution to be spun will result in a thinner fiber.
  • the result from the alternation - higher/lower solution fed for spinning, according to the invented method and program set in control unit 42, is the production of viscose filament rayon with a cyclically varying thickness / linear density/ without the number of filaments changes.
  • the prepared viscose solution from pipeline 37 before being fed under pressure in the pipe collector 38 of the spinning machine is supplied to the homogenizer 32 of the installation for the production of dyed in mass viscose filament rayon.
  • the preliminarily prepared pigment suspension, which for the time of the production cycle is stored in tank 30 (Fig.2) is dosed by pump 31 to the viscose solution before the same is passed to the homogenizer 32 (Fig.2).
  • the viscose solution is mixed with the dosed by pump 31 suspension thus causing the pigment particles to distribute uniformly throughout its entire volume.
  • the already dyed after homogenization viscose solution is again fed under pressure to the local viscose pipe collector 38 of the spinning machine /Fig.2/, to which the solution dosing pumps have been added.
  • the quantity of the already dyed in mass viscose supplied to the spinnerets for spinning is controlled by the program set in the control unit 42.
  • the inverter operate the motor 40-3, which through reduction gear 39-2 and the connection 41-2 actuates the power shaft 21 and respectively the viscose dosing pumps 22.
  • the number of revs of the power shaft is higher, a greater amount of viscose is dosed and the fiber spun is thicker, and when the number of power shaft revs is lower the spun fiber is thinner.
  • dyed in mass viscose filament rayon with cyclical change of the linear density /thickness/ is obtained, where linear density cyclically deviation depends on the type of program set in the control unit 42.
  • the installation operates in the already known way: in unit 12 the freshly-spun viscose filament rayon is treated with various solutions prepared in unit 13 for removal of the residues of the spin bath, the sodium sulfate and sulfur resulted from the chemical reactions during spinning.
  • the obtained semi-finished product is centrifuged, conditioned, rewound and prepared for quality control inspection and packaging as finished production - units 14, 15, 16, 17, 18 and after quality inspection - stored in unit 19.
  • control unit 42 can be installed various programs for the operation control of the third electric motor 40-3, which practically enhances the possibilities for production of different types of viscose filament rayon with cyclically variation of thickness, i.e. differently (flamed).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne des procédés et des installations pour la production de rayonne à filaments de viscose présentant une masse linéique variant de manière cyclique. Selon le procédé selon l'invention, l'actionnement constamment synchrone de dispositifs d'alimentation en solution de viscose et de filage est interrompu, alors que des premier (27) et second (28) dispositifs de filage et la disposition d'un fil fraîchement filé dans un système centrifuge 39-5 sont actionnés par l'utilisation d'une installation d'alimentation électrique existante (40-4), de moteurs 40-1 et 40-2 et de groupes d'engrenages réducteurs 39-1 et 39-2 appelés première installation d'alimentation électrique et d'actionnement. Selon le procédé selon l'invention, une nouvelle installation d'alimentation électrique 40-7 et d'actionnement 40-3 appelée seconde installation d'alimentation électrique et d'actionnement qui fonctionne sous la commande de l'unité 42 est ajoutée à la même machine à filer. Selon l'invention, l'actionnement de l'arbre de commande 21 ne dépend plus de l'actionnement d'autres dispositifs de filage et la quantité de viscose ajoutée de façon dosée au filage pourrait être changée indépendamment du fonctionnement d'autres dispositifs. Lorsqu'une ou deux installations individuelles pour la teinture sont associées à la machine à filer, le procédé selon l'invention permet la production de rayonne à filaments teintés en une ou deux couleurs présentant une masse linéique variant de manière cyclique.
PCT/BG2018/000029 2017-06-27 2018-06-26 Procédé permettant d'obtenir de la rayonne à filaments de viscose présentant une masse linéique variant de manière cyclique appelée rayonne « flamme », installation pour la mise en œuvre de ce procédé et produit obtenu à l'aide de ce procédé et de cette installation Ceased WO2019000057A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16/623,764 US20200173058A1 (en) 2017-06-27 2018-06-26 Method for obtaining viscose filament rayon with cyclically varying linear density called "flame" rayon, an installation for the realization of this method, and a product, obtained using this method and this installation
EP18746561.2A EP3645770A1 (fr) 2017-06-27 2018-06-26 Procédé permettant d'obtenir de la rayonne à filaments de viscose présentant une masse linéique variant de manière cyclique appelée rayonne « flamme », installation pour la mise en uvre de ce procédé et produit obtenu à l'aide de ce procédé et de cette installation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG112534 2017-06-27
BG112534A BG67252B1 (bg) 2017-06-27 2017-06-27 Метод за получаване на вискозна изкуствена коприна с променяща се дебелина, продукт, получен по този метод и инсталация за реализиране на метода

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WO2019000057A1 true WO2019000057A1 (fr) 2019-01-03

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US (1) US20200173058A1 (fr)
EP (1) EP3645770A1 (fr)
BG (1) BG67252B1 (fr)
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Publication number Priority date Publication date Assignee Title
CN114672888A (zh) * 2022-04-20 2022-06-28 黄石市鸿达塑料模具有限责任公司 一种熔喷法生产非纺织造布挤出模具

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