Verfahren zur Herstellung eines cellulosischen Formkörpers

Process and device for producing cellulose fibres

In order to produce cellulose fibres, a solution of cellulose in a tertiary amino oxide is hot-shaped into filaments, the filaments are cooled and brought into a precipitation bath in order to precipitate the dissolved cellulose. Before being brought into the precipitation bath, the shaped solution is exposed for cooling to a substantially laminar gas current. ...

PROCEDURE FOR THE PRODUCTION OF SOLUTIONS OF CELLULOSE.

METHOD FOR THE MANUFACTURE OF CELLOLOSE MOULDED PRODUCT

Cellulose fibres

VERFAHREN ZUR HERSTELLUNG VON LOESUNGEN VON CELLULOSE SOWIE EINRICHTUNG ZUR DURCHFUEHRUNG DES VERFAHRENS

VERFAHREN ZUR HERSTELLUNG EINES CELLULOSISCHEN FORMKOERPERS

USE OF A SPIN NOZZLE FOR THE PRODUCTION OF CELLULOSI THREADS

PROCEDURE FOR THE PRODUCTION OF CELLULOSI MOLDED ARTICLES

PROCEDURE FOR THE PRODUCTION OF SOLIDIFIED GRP COMPONENTS

PROCEDURE FOR THE PRODUCTION OF CELLULOSI FIBERS AS WELL AS DEVICE FOR THE EXECUTION OF THE PROCEDURE

Cellulose fibres

Process for Manufacturing Cellulose Moulded Bodies and a Device for Carrying It Out

PROCESS FOR MANUFACTURING CELLULOSE MOULDED BODIES AND A DEVICE FOR CARRYING IT OUT

To prepare cellulose mouldings, a solution of cellulose in a tertiary amineoxide is moulded in a hot state and the moulded solution is introduced into a precipitation bath in order to precipitate the contained cellulose, wherein the hot moulded solution is cooled before introduction into the precipitation bath. Cooling occurs immediately after the moulding process and preferably consists of blowing air horizontally on to the cellulose moulding. The process according to the invention allows spinning of the cellulose solution with a high fibre density without the spun fibres sticking together after emerging from the spinneret. In spite of the high fibre density, it furthermore allows the use of a long air gap between the spinneret and the precipitation bath, by which means sufficient time is generated in the spinning process to affect the textile properties of the fibres by drawing at the die (Figure 1).

CELLULOSE FIBRES

The invention concerns a process for the production of cellulose fibres by extruding a solution of cellulose in a tertiary amine-oxide through spinning holes of a spinneret and conducting the extruded filaments across an air gap into a precipitation bath while drawing them, characterized in that the process is carried out in a way that the mathematical expression 51,4 + 0,033xD + 1937xM2 - 7,18xT - 0,094xL - 2,50xF + 0,045xF2, wherein D is the spinning hole diameter in .mu.m, M is the dope output per hole in g/min, T is the titer of the individual filament in dtex, L is the length of the air gap in mm and F is the humidity of the air in the air gap in g of water/kg of air, does not exceed the number 10, with the provision that the length of the air gap is provided greater than 30 mm. That process leads to cellulose fibres having a very weak tendency to fibrillation.

VERFAHREN ZUR HERSTELLUNG VON CELLULOSEFASERN

CELLULOSE FIBER

METHOD FOR PRODUCING A REINFORCED FIBER COMPOSITE

The invention relates to a method for producing a reinforced fiber composite which contains cellulosic fibers, the cellulose being present in the crystalline structure cellulose II, by bringing said fiber composite into contact with an aqueous solution of N-methylmorpholin-N-oxide (NMMO) at an elevated temperature and subsequently washing said fiber composite. Said method is characterized in that the fiber composite is brought into contact with the aqueous solution in such a way that the reationship -947 + 0.30xlog(10)t + 0.046xT - 3.53xC + 645xlog(10)C where t is the time in minutes during which the fiber composite is kept in contact with the aqueous NMMO solution, T is the temperature of the aqueous NMMO solution in ~C and C is the concentration of the NMMO in % mass in relation to the aqueous NMMO solution, gives a figure in the region of 0.30 and 1.70 on the condition that the temperature T is less than 130 ~C and the concentration C lies in the region of 70 to 84 % mass.

PROCESS AND ARRANGEMENT FOR PREPARING A SOLUTION OF CELLULOSE

There is disclosed a process for preparing solutions of cellulose in aqueous tertiary amine oxides from a suspension of cellulose in an aqueous solution of the tertiary amine oxide by supplying heat at a reduced pressure. The suspension is transported over a heating surface, spread in layers or coats, until a homogenous solution of the cellulose has formed, which has a viscosity of between 50 and 15,000 Pas.s. Feeding of the suspension and drawing-off of the homogenous solution are carried out continuously. The solutions are prepared in an indirectly heated evacuatable vessel provided with a stirring device. The vessel is designed as a cylindrical container including a centrically mounted stirring shaft having agitators joined thereto, the radial distance of the agitators from the internal wall of the container being 20 mm at the most. There are provided an intake for the cellulose suspension in the upper part of the container and an outlet for the homogenous cellulose solution in its lower ...

PROCESS AND DEVICE FOR PRODUCING CELLULOSE FIBRES

To prepare cellulose fibres, a solution of cellulose in a tertiary amine-oxide is shaped in hot condition to give filaments, the filaments are cooled and then introduced into a precipitation bath in order to precipitate the dissolved cellulose, whereby the shaped solution is exposed to an essentially laminar gas stream (Figure 2a) for cooling before introduction into the precipitation bath.

METHOD OF PRODUCING SHAPED CELLULOSIC ARTICLES

... 7863 MR A cellulosic solution in a amine oxide and water is forced through an elongated orifice passage having a minimum length of 1000 .mu.m and a minimum diameter along the length which is up to 150 .mu.m 50 that fiber characteristics are imparted to the emerging strand which passes through an air gap of at the most 35 mm in length into the coagulating solution.

METHOD OF PRODUCING SHAPED CELLULOSIC BODIES

A cellulosic shaped body, for example, a foil or fiber is produced by passing a spinning solution from an orifice into a spinning bath. The ratio of the withdrawal velocity from this spinning bath to the orifice emergence velocity is held at no more than 1 and after emergence from the spinning bath, the body is stretched.

PROCESS AND DEVICE FOR PRODUCING CELLULOSE FIBRES

To prepare cellulose fibres, a solution of cellulose in a tertiary amine-oxide is shaped in hot condition to give filaments, the filaments are cooled and then introduced into a precipitation bath in order to precipitate the dissolved cellulose, whereby the shaped solution is exposed to an essentially laminar gas stream (Figure 2a) for cooling before introduction into the precipitation bath.

VERFAHREN ZUR HERSTELLUNG VON LOESUNGEN VON CELLULOSE.

Process and device for producing cellulose fibres

METHOD FOR THE PRODUCTION OF CELLULOSE FIBRES AND DEVICE FOR ITS MATERIALIZATION

By the method the cellulose fibres are produced whencellulose solution in tertiary aminoxide is formed in warmcondition in filaments which are cooled and introduced in asettling bath so that the cellulose may settle. Before enteringthe settling bath the solution formed is subjected to cooling in apredominantly gas flow.6 claims, 3 figures ...

METHOD OF PRODUCING SHAPED CELLULOSIC BODIES

... 7856-MR A cellulosic shaped body, for example, a foil or fiber is produced by passing a spinning solution from an orifice into a spinning bath. The ratio of the withdrawal velocity from this spinning bath to the orifice emergence velocity is held at no more than 1 and after emergence from the spinning bath, the body is stretched.

Verfahren zur Herstellung eines cellulosischen Formkörpers.

Cellulose fibres

The invention concerns a method of manufacturing cellulose fibres by extruding a solution of cellulose in a tertiary-amine oxide through the holes of a spinneret and passing the extruded filaments under tension through an air gap into a regenerating bath. The method is characterized in that it is is carried out in such a way that the maximum value of the mathematical expression 51.4 + 0.033xD + 1937xM<2> - 7.18xT - 0.094xL - 2.50xF + 0.045xF<2> in which D is the spinneret-hole diameter in mu m, M is the spinning-solution throughput per hole in g/min, T is the titre of a single filament in dtex, L is the length of the air gap in mm and F is the humidity of the air in the air gap in g of water per kg of air, is 10, with the provision that the length of the air gap is greater than 30 mm. This method gives cellulose fibres with a very low tendency to fibrillation.

VERFAHREN ZUR HERSTELLUNG VON LOESUNGEN VON CELLULOSE SOWIE EINRICHTUNG ZUR DURCHFUEHRUNG DES VERFAHRENS

Method for producing a reinforced fiber composite

VERFAHREN ZUR HERSTELLUNG CELLULOSISCHER FORMKöRPER

Process and device for producing cellulose fibres

Process for manufacturing cellulose moulded bodies and a device for carrying it out

Method for producing a reinforced fiber composite

A method for producing a cellulose shaped article

Process for manufacturing cellulose moulded bodies and a device for carrying it out

PROCESS FOR THE PRODUCTION OF CELLULOSIC ARTICLES

PREPARATION OF CELLULOSE SOLUTION, AND CELLULOSE SOLUTION PREPARATION DEVICE

PURPOSE: To safely provide a cellulose solution for spinning solution with a simple device, by continuously supplying a cellulose suspension in a tertiary amine oxide aqueous solution onto a heated surface under a reduced pressure, spreading in layers or coats, and moving it until a homogenous solution having a specified viscosity has been formed. CONSTITUTION: A cellulose suspension in a tertiary amine oxide (e.g.; N- methylmorpholine N-oxide or the like) aqueous solution is continuously introduced into a cylindrical vessel 2 having a stirring shaft 7 having a stirring element 8 arranged in the center through an inlet 11, the rotating speed of the stirring shaft 7 is regulated to speed the suspension on the vessel inner wall 1 heated by a heating jacket 3 in layers or coarts, the pressure in the space 15 within the vessel is reduced, the suspension is moved on the heated surface until a cellulose homogeneous solution having a viscosity of 50-15000 Pas.s has been formed, and the resulting ...

Verwendung einer Spinndüse zur Herstellung cellulosischer Fäden

Method for production of shaped cellulose article

Cellulosefaser

Postupak za pripremanje celuloze kao i uredaj za izvodenje postupka

Verfahren zur Herstellung cellulosischer Fasern sowie Vorrichtung zur Durchführung des Verfahrens

VERFAHREN ZUR HERSTELLUNG CELLULOSISCHER FASERN SOWIE VORRICHTUNG ZUR DURCHFÜHRUNG DES VERFAHRENS

VERFAHREN ZUR HERSTELLUNG EINES VERFESTIGTEN FASERVERBUNDES

CELLULOSEFASER

Cellulose fibres

METHOD FOR THE PREPARATION OF CELLULOSE FIBRES AND DEVICE FOR ITS APPLICATION

The method includes the formation of a cellulose solution in a tetriary aminoxide in hot condition in filaments which are cooled and are then introduced in a sedimentation bath so that the cellulose would settle. Before entering the sedimentation bath the solution formed is subjected to cooling by predominently laminal gas flow.

CELLULOSE FIBRES

The invention relates to a method for the preperation of cellulose fibres having very limited ability to fibrillation. According to it,cellulose solution in tertiary aminoxide is extruded across spinning holes of a spinning nozzle after which the extruded elementary fibres get across an air aperture by drawing into a sedimentation bath. The method is materialized on the basis of the mathematical expression 51.4 + 0.033 x D + 1937 x m² - 7,18 x T - 0.094 x L - 2.50 x F + 0.045 x F² which would have a maximum value of 10, provided that the width of the air aperture is bigger than 30 mm. In the mathematical expression D means the diameter of the spinning holes in mm, M is the quantity of spinning mass pushed through one hole, in g/min., T is the titre of the individual elementary fibre in dtext, L is the width of the air aperture in mm and F is the air humidity in the air aperture in g water/kg air.

METHOD FOR THE MANUFACTURE OF CELLULOSE MOULDED ARTICLE

METHOD FOR THE PREPARATION OF CELLULOSE MOULDED PRODUCTS AND A DEVICE FOR ITS IMPLEMENTATION

Изобретението се отнася до метод и устройство за получаване на целулозни формовани изделия. По метода разтвор от целулоза (3, 11, 1Г, 18) в третичен аминов окис се формова в топло състояние и формованият разтвор (5, 5', 5”, 5'”) се внася в утаяваща баня (8), за да се утаи съдържащата се целулоза, при което топлият формован разтвор се охлажда преди внасянето в утаяващата баня (8), като се излага на газов поток (6, 6', 6”, 6”’, 22, 22') непосредствено след формоването. Устройството за получаване на целулозни влакна от разтвор (3, 11, 1Г, 18) на целулоза в третичен аминов окис включва предилна дюза (1, Г, 1”, Г”) с предилни отвори (16, 16', 16”, 16'”), непосредствено под които има приспособление (7, 7', 7”, 7'”, 10, 10') за подаване на охлаждащ газ (6, 6', 6”, 6'”, 13, 13') за охлаждане на целулозните влакна (5, 5', 5”, 5'”). The invention relates to a method and device for producing cellulose molded articles. By the process, a solution of cellulose (3, 11, 18, 18) in tertiary amine oxide is formed in a warm state and the molded solution (5, 5 ', 5 ", 5" ") is introduced into a precipitation bath (8) to precipitate the contents cellulose, wherein the hot molded solution is cooled before being introduced into the precipitation bath (8), exposing to a gas stream (6, 6 ', 6 ", 6"', 22, 22 ') immediately after molding. The device for the preparation of cellulose fibers from a solution of (3,11,19,18) of cellulose in tertiary amine oxide includes a nozzle (1, 1 ', 1' ', 1' ') with side openings (16, 16', 16 '', 16 '') (7, 7 ', 7', 7 '', 10, 10 ') for supplying cooling gas (6, 6', 6 ', 6' ', 13, 13' for cooling the cellulose fibers (5, 5 ', 5 &quot;, 5 &quot;).

METHOD FOR PRODUCTION OF SHAPED CELLULOSE ARTICLE

METHOD AND DEVICE FOR PREPARING OF CELLULOSE SOLUTIONS

METHOD FOR THE PREPARATION OF CELLULOSE MOULDED PRODUCTS AND A DEVICE FOR ITS IMPLEMENTATION

PROCESS FOR PREPARING CELLULOSE SOLUTION

PROBLEM TO BE SOLVED: To provide a process for continuously preparing a cellulose soln. in an aq. tertiary amine oxide soln. wherein heat treatment of a suspension is conducted in a substantially shorter period of time. SOLUTION: An internal wall 1 of a container 2 is heated to a temp. of 50 to 150°C, and a suspension of cellulose in a tertiary amine soln. is continuously fed into an inlet element 11. As the suspension is fed into the inlet element 11, the suspension is spread on a heated internal wall 1 by means of a distributing ring 10 so as to form a coating or a layer on the internal wall 1. A shaft 7 is continuously rotated, and agitating means 8 causes the layer or coating to be moved downward along the heated internal wall 1 while strongly mixing the suspension. The internal pressure of the container 2 is brought to 0.5 to 1,000mbar to accelerate the evaporation of water from the layer or coating of the cellulose suspension at the time of downward movement of the cellulose suspension ...

PREPARATION OF CELLULOSE SOLUTION

PURPOSE: To provide a continuous method for preparing a cellulose soln. through a tert. amine oxide aq. soln. in which heat treatment of a suspension is conducted in a substantially shorter time. CONSTITUTION: The inner wall of a vessel 2 is heated at 50-150°C. A cellulose suspension in a tert. amine oxide soln. is continuously supplied to an inlet element 11. The suspension is spread over the heated inner wall 1 so that a film or layer is formed over the inner wall 1 through a distribution ring as the suspension is supplied to the inlet element 11. As a shaft 7 rotates continuously, a mixing means 8 forces the layer or film downward along the heated inner wall 1, while mixing the suspension vigorously. The inner pressure of the vessel 2 is kept at 0.5-1,000 mbar. Thus, evaporation of water from the layer or film of the cellulose suspension is accelerated, while the cellulose suspension is moving downward along the inner wall 1 in order to condense the tert. amine oxide aq. soln. to the ...

Process and arrangement for preparing a solution of cellulose

There is disclosed a process for preparing solutions of cellulose in aqueous tertiary amine oxides from a suspension of cellulose in an aqueous solution of the tertiary amine oxide by supplying heat at a reduced pressure. The suspension is transported over a heating surface, spread in layers or coats, until a homogenous solution of the cellulose has formed, which has a viscosity of between 50 and 15,000 Pas.s. Feeding of the suspension and drawing-off of the homogenous solution are carried out continuously. The solutions are prepared in an indirectly heated evacuatable vessel provided with a stirring device. The vessel is designed as a cylindrical container including a centrically mounted stirring shaft having agitators joined thereto, the radial distance of the agitators from the internal wall of the container being 20 mm at the most. There are provided an intake for the cellulose suspension in the upper part of the container and an outlet for the homogenous cellulose solution in its lower end.

PROCEDURE FOR PREPARING CELLULOSE SOLUTIONS AND APPARATUS FOR IMPLEMENTING THE PROCEDURE

PROCEDURE TO MANUFACTURE A CELLULOSE MOLDED OBJECT.

PARA FABRICAR UN CUERPO DE MOLDEO DE CELULOSA, SE PRESIONA UNA SOLUCION CELULOSICA DE AMINOXIDO A TRAVES DE UNA TOBERA O DE UNA RENDIJA. ESTA SOLUCION ES CONDUCIDA DESPUES POR UNA RANURA DE AIRE Y, FINALMENTE, COAGULADA EN UN BAÑO DE RELLENO. SEGUN LA INVENCION, NO SE LLEVA A CABO EL ESTIRAMIENTO EN LA RANURA DE AIRE, ES DECIR, LA RELACION ENTRE LA VELOCIDAD DE DESARROLLO Y LA VELOCIDAD DE SALIDA ES COMO MUCHO 1. EL ESTIRAMIENTO Y EL EMBUTIDO PROFUNDO DE LA CELULOSA SE LLEVA A CABO CUANDO ESTA ESTA COAGULADA. TO MANUFACTURE A CELLULOSE MOLDING BODY, A CELLULOSIC AMINOXIDE SOLUTION IS PRESSED THROUGH A NOZZLE OR RENDER. THIS SOLUTION IS THEN DRIVEN BY AN AIR SLOT AND, FINALLY, COAGULATED IN A FILLING BATH. ACCORDING TO THE INVENTION, THE STRETCHING IN THE AIR SLOT IS NOT CARRIED OUT, THAT IS, THE RELATION BETWEEN THE DEVELOPMENT SPEED AND THE OUTPUT SPEED IS LIKE A LOT 1. THE STRETCHING AND THE DEEP CELLULOSE SAUSAGE IS CARRIED OUT WHEN IS IT COAGULATED.

Method of producing shaped cellulosic articles

Shaped cellulosic bodies and especially cellulosic fibers or filaments are produced by precipitating cellulose from a solution containing cellulose and NMMO. To allow elevated concentrations of NMMO in the precipitating bath without detriment to the properties of the fibers or filaments produced, the temperature of the precipitating bath is held at most at 0° C.

Process for producing cellulose fibres and device for carrying out the process

Process for producing solutions of cellulose

For producing solutions of cellulose in water-containing tertiary amine oxides from a suspension of cellulose in an aqueous solution of the tertiary amine oxide by supplying heat under reduced pressure, the suspension having a viscosity between 50 and 15,000 Pas.sec, measured in a relative system, is spread as a layer or film over a heating surface and transported until a homogeneous solution of the cellulose is formed, the feeding of the suspension and the take-off of the homogeneous solution being carried out continuously. These solutions can be produced in an indirectly heated vessel which is provided with a stirring device and can be evacuated and which is designed as a cylindrical container (2) with a centrally mounted stirrer shaft (7) and stirrer blades (8) attached thereto, the radial distance (13) of the stirrer blades (8) from the inside wall (1) of the container (2) being at most 20 mm, and an inlet (11) for the cellulose suspension being provided in the upper part of the container and an outlet (12) for the homogeneous cellulose solution being provided at the lower end. <IMAGE>

Method of and apparatus for making shaped cellulose bodies

To give a cellulose marked body, a cellulose soln. is shaped while hot in a tert. amine oxide and the shaped soln. is fed to a pptn. bath. Before the hot and shaped soln. is passed to the bath, it is cooled directly after shaping. An appts. has a feed for cooling gas directly below the openings of a spinnerette to cool the cellulose filaments. A gas stream (6) is used to cool the warm material, at right angles to it, or the film formation is at right angles to the gas stream. Two gas streams (6) are used for cooling, from opposite sides of the warm material. In another form, one gas stream can be directed radially inwards at the material and the other stream radially outwards. For the cooling action, heat is extracted from the material at least at 20 kj/kg of soln. and pref. 20-350 kj/kg of soln.

Process for the production of cellulosic articles

Process for manufacturing cellulose fibres having reduced tendency of fibrillation and cellulose fibres manufactured by applying said process

The invention concerns a method of manufacturing cellulose fibres by extruding a solution of cellulose in a tertiary-amine oxide through the holes of a spinneret and passing the extruded filaments under tension through an air gap and into a regenerating bath. The method is characterized in that it is carried out in such a way that the maximum value of the mathematical expression 51.4 + 0.033xD + 1937xM<2> - 7.18xT - 0.094xL - 2.50xF + 0.045xF<2> in which D is the spinneret-hole diameter in mu m, M is the spinning-solution throughput per hole in g/min, T is the titre of a single filament in dtex, L is the length of the air gap in mm and F is the humidity of the air in the air gap in g of water per kg of air, is 10, with the provision that the length of the air gap is greater than 30 mm. This method gives cellulose fibres with a very low tendency to fibrillation.

Process for the preparation of cellulose mold bodies

Process for preparing cellulose fibers and apparatus for making the same

Pro výrobu celulozových vláken se tvaruje teplý roztok celulozy v terciárním aminoxidu na filamenty, filamenty se chladí a návazně zavádějí do srážecí lázně, aby se rozpuštěná celuloza srazila, přičemž je tvarovaný roztok před zavedením do srážecí lázně vystaven pro ochlazení v podstatě laminárnímu proudění plynu. Zařízení na provedení způsobu má přívod chladícího plynu a zvlákňovací trysku (1') se zvlákňovacími otvory, které jsou v podstatě uspořádané prstencovitě pro vytváření prstencovitého svazku filamentů (5'), přívod chladícího plynu je předvídán ve středu prstence vytvořeného uspořádáním zvlákňovacích otvorů a přívod je tvarován tak, že filamenty (5') zasahuje v podstatě laminární proudění plynu a že filamenty (5') jsou chlazeny laminárním prouděním plynu. Přívod chladícího plynu má přívodní hrdlo (8) a odrazový talíř (9) tvarován tak, aby proudění plynu zůstalo při změně směru proudění pokud možno laminární. ŕ For the production of cellulose fibers, a warm cellulose solution is formed in the tertiary amine oxide to filaments, the filaments are cooled and subsequently introduced into the precipitation bath to precipitate the dissolved cellulose while subjecting the shaped solution to a substantially laminar gas flow prior to introduction into the precipitation bath. The apparatus embodiment has a cooling gas inlet and a spinneret spinneret (1 ') which are substantially arranged annularly to form an annular filament bundle (5'), a cooling gas inlet is provided in the center of the ring formed by the spinneret arrangement and the inlet is shaped such that the filaments (5 ') extend substantially through the laminar gas flow and that the filaments (5') are cooled by a laminar gas flow. The cooling gas inlet has a supply nozzle (8) and a reflector plate (9) shaped so that the gas flow remains as laminar as possible when the flow direction is changed. ŕ

Process of and apparatus for making cellulose mouldings

To prepare cellulose mouldings, a solution of cellulose in a tertiary amine-oxide is moulded in a hot state and the moulded solution is introduced into a precipitation bath in order to precipitate the contained cellulose, wherein the hot moulded solution is cooled before introduction into the precipitation bath. Cooling occurs immediately after the moulding process and preferably consists of blowing air horizontally on to the cellulose moulding. The process according to the invention allows spinning of the cellulose solution with a high fibre density without the spun fibres sticking together after emerging from the spinneret. In spite of the high fibre density, it furthermore allows the use of a long air gap between the spinneret and the precipitation bath, by which means sufficient time is generated in the spinning process to affect the textile properties of the fibres by drawing at the die.

Process for making a cellulosic mold body

Method of cellulose solutions preparation in water tertric amine oxide and apparatus for realizing thereof

The summary of the invention consists in the fact that cellulose dispersion in the water-oxide tertric amine mixture persistently is introduced into apparatus and is realized persistent motion of dispersion in form of layer with thickness of 1,5-15 mm distributed on the surface and heated up to temperature of 70-80°C at pressure 100-150 mbar during 3 - 4 min. Radial distance from mixing blades to inner wall of vessel is selected no more the 20 min. Inlet branch pipe for cellulose suspension is situated on the upper part of the vessel. The outlet branch pipe for homogenous solution of cellulose is situated on the lower part of the vessel.The apparatus also is equipped with the distributed ring installed on the mixing shaft for distribution of cellulose suspension on the inner wall of the vessel. The mixing blades are placed on the shaft having the possibiliy of angle inclination changing relatively to the axis of shaft.

Process for the production of cellulosic articles

Process for the preparation of cellulose fibres

Cellulosefaser

Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens

Verfahren zur herstellung cellulosischer formkörper

Verwendung einer spinndüse zur herstellung cellulosischer fäden

Verfahren zur herstellung eines verfestigten faserverbundes

Метод за производство на целулозно изделие

Изделието намира приложение в леката промишленост и е с по-добри текстилни качества и подобрено относително удължение при скъсване. По метода целулозен аминооксиден разтвор се пресува през дюза, след което се прокарва през въздушен процеп, където се изтегля, и се коагулира в утаителна баня. Диаметърът на отвора на използваната дюза е 150 м, за предпочитане 70 м, а дължината на канала на дюзата е 1000 м, за предпочитане 1500 м. 3 претенции

Proses pembuatan sellulosa yang dibentuk

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Метод за производство на целулозно формовано изделие

Методът намира приложение в леката промишленост. Полученото изделие е с по-добри текстилни свойства и подобрено относително удължение при скъсване. По метода аминооксиден разтвор се формува през дюза, след което преминава през въздушен процеп и се коагулира в утаителна баня. Във въздушния процеп не се извършва изтегляне отношението между скоростта на опъване и скоростта на излизане от отворите е 1. Коагулиралата целулоза се изтегля или се подлага на дълбоко изтегляне. 1 претенция