Compact module for wet spinning of chemical fibres of the type comprising a spinning head (F) of 2-8 tows (S), each one consisting of a plurality of continuous filaments, relative supply pumps (P) of the spinning solution, a coagulation tank (V) containing a coagulation solution, and a plurality of drive rollers (2) and respective idle diverter rollers (3) which determine a zigzag path of the tows (S) downstream of the spinning area, in the rectilinear lengths of which liquid-based treatments are carried out on said tows (S). The rectilinear lengths of said zigzag path are horizontal and said liquid-based treatments on the tows (S) are carried out in horizontal treatment trays (4) of the spillway type.
A method for spreading a tow of textile non-braided filaments, preferably chemical or inorganic fibres comprises providing a tow of textile non-braided filaments extending along its own main direction and having a section transverse to the main direction with a predetermined thickness and a predetermined width, feeding the tow along a travel path and spreading the tow in order to increase its width and reduce its thickness, defining a spread tow. The step of spreading the tow includes immersing the tow in a bath and generating in the bath a sequence of transverse waves crossing the tow transversely to the main direction in order to separate and place the individual filaments side by side, thereby spreading the tow, wherein the tow entering the bath and/or the spread tow extracted from the bath is/are unsized.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical fiber spinning machines; fiber blowing machines;
fiber scutching machines; fiber cutting machines; wringing
machines for laundry; textile washing machines; textile
milling machines; textile production machines; textile
scutching machines; textile tentering machines; textile
calendering machines; card type textile machines; printing
machines [for textile]; scouring machines for textiles;
machines for dyeing textiles; ironing machines for textile
articles; machines for printing textile materials; twisting
frames being textile machines; raising machines for textile
treating; machines for the textile industry; material
production and processing machines; spray damping machines
[for textile treatment]; textile washing machines [for
industrial purposes]; machines for the handling of
materials; automated machines for loading materials;
machines for manufacturing packaging materials; machines for
separating recyclable materials; screens for the printing of
textile materials [parts of machines]; machines and machine
tools for treatment of materials and for manufacturing;
precision machine tools for cutting materials; precision
machine tools for machining workpieces; lifting machines for
transporting bulk materials; size reduction machines for
hard materials; discharge screws for gaseous materials
[parts of machines]; discharge screws for liquid materials
[parts of machines]; discs made of abrasive materials [parts
of machines]; brake parts (machine -) made of materials
having frictional properties; stamping machines for pressing
[shaping] components from sheet materials; stamping machines
for pressing out components from sheet materials; perforated
drums being parts of machines for sorting materials;
perforated plates being parts of machines for sorting
materials; cutting tools [machine] made of sintered
materials based on nitrides; perforated screens being parts
of machines for sorting of materials. Polymerisation installations; distillation apparatus for
chemical processing, drying apparatus for chemical
processing and heat exchangers for chemical processing. Installation, maintenance and repair in relation to machines
for spinning chemical fibres, machines for blowing fibres,
machines for scutching fibres, machines for cutting fibres,
wringing machines for laundry; installation, maintenance and
repair in relation to machines for washing textiles, textile
fulling machines, machines for producing textiles, textile
scutching machines, stenters for textiles; installation,
maintenance and repair in relation to machines for
calendering of textiles, textile carding machines, printing
machines (for textiles), machines for washing of textile
goods, machines for dyeing textiles; installation,
maintenance and repair in relation to ironing machines for
textile articles, machines for printing textile materials,
twisting frames being machine tools, raising machines for
textile treating; installation, maintenance and repair in
relation to machines for the textile industry, machines for
production and processing of materials, nebulising
humidifiers (for treating textiles), textile-washing
machines (for use in industry); installation, maintenance
and repair in relation to machines for handling materials,
automated machines for loading materials, machines for
manufacturing packaging material; installation, maintenance
and repair in relation to machines for separating recyclable
materials, screens for printing of textile materials (parts
of machines), machines and machine tools for the treatment
of materials and for manufacture, precision machine tools
for cutting of materials; installation, maintenance and
repair in relation to precision machine tools for machining
pieces, raising machines for transport of bulk materials,
machines for reducing the dimensions of hard materials,
drain screws for gaseous materials (parts of machines);
installation, maintenance and repair in relation to drain
screws for liquid materials (parts of machines), discs of
abrasive materials (parts of machines), parts of brakes (for
machines) of materials with frictional properties, moulding
machines for pressing (shaping) components from sheet
materials; installation, maintenance and repair in relation
to moulding machines for extracting via pressing of
components from sheet materials, perforated shafts being
parts of machines for sorting of materials, perforated
plates being parts of machines for separating materials;
installation, maintenance and repair in relation to cutting
tools (machines) of sintered materials based on nitrides,
perforated screens being parts of machines for sorting of
materials, polymerisation installations, equipment for
chemical processes. Design in relation to machines for spinning chemical fibres,
machines for blowing fibres, machines for scutching fibres,
machines for cutting fibres; design in relation to wringing
machines for laundry, machines for washing textiles, textile
fulling machines, machines for producing textiles, textile
scutching machines; design in relation to stenters for
textiles, machines for calendering of textiles, textile
carding machines, printing machines (for textiles); design
in relation to machines for washing of textile goods,
machines for dyeing textiles, ironing machines for textile
articles, machines for printing textile materials; design in
relation to twisting frames being machine tools, raising
machines for textile treating, machines for the textile
industry; design in relation to machines for production and
processing of materials, nebulising humidifiers (for
treating textiles), textile-washing machines (for use in
industry), machines for handling materials; design in
relation to automated machines for loading materials,
machines for manufacturing packaging material, machines for
separating recyclable materials, screens for printing of
textile materials (parts of machines); design in relation to
machines and machine tools for the treatment of materials
and for manufacture, precision machine tools for cutting of
materials, precision machine tools for machining pieces;
design in relation to raising machines for transport of bulk
materials, machines for reducing the dimensions of hard
materials, drain screws for gaseous materials (parts of
machines); design in relation to drain screws for liquid
materials (parts of machines), discs of abrasive materials
(parts of machines), parts of brakes (for machines) of
materials with frictional properties, moulding machines for
pressing (shaping) components from sheet materials; design
in relation to moulding machines for extracting via pressing
of components from sheet materials, perforated shafts being
parts of machines for sorting of materials, perforated
plates being parts of machines for separating materials;
design in relation to cutting tools (machines) of sintered
materials based on nitrides, perforated screens being parts
of machines for sorting of materials, polymerisation
installations, equipment for chemical processes.
4.
METHOD FOR SPREADING A TOW OF TEXTILE NON-BRAIDED FILAMENTS, PREFERABLY CHEMICAL OR INORGANIC FILAMENTS
A method for spreading a tow of textile non-braided filaments, preferably chemical or inorganic fibres comprises providing a tow (F) of textile non- braided filaments extending along its own main direction (A) and having a section transverse to the main direction with a predetermined thickness (s) and a predetermined width (W), feeding the tow (F) along a travel path (P) and spreading the tow (F) in order to increase its width (W) and reduce its thickness (s), defining a spread tow (ST1, ST2). The step of spreading the tow (F) comprises immersing the tow (F) in a bath (6) and generating in the bath (6) a sequence of transverse waves crossing the tow (F) transversely to the main direction (A) in order to separate and place the individual filaments side by side, thereby spreading the tow (F), wherein the tow (F) entering the bath (6) and/or the spread tow (ST1, ST2) extracted from the bath (6) is/are unsized.
B65H 51/005 - Séparation en plusieurs groupes d'un faisceau de matériaux filiformes défilants
D06B 3/02 - Passage des matières textiles à travers des liquides, gaz ou vapeurs en vue d'effectuer un traitement, p. ex. lavage, teinture, blanchiment, encollage, imprégnation de fibres, rubans ou mèches
D01D 11/02 - Ouverture des faisceaux pour espacement des fils ou filaments
5.
Advancement member for fiber material and carbonization furnace for the production of carbon fiber
An advancement member of a fibre material for a carbonization line for the production of carbon fibres includes a support structure extending between two end sections along a direction of advance of the fibre material, a plurality of feed rollers for the fibre material, each rotatably associated to the support structure by a pair of support elements, wherein the support elements of an inlet roller and/or an outlet roller includes a base integral with said support structure, a support ring coupled with the base and having at least a through opening for receiving one end of the respective feed roller and adjusting means operatively interposed between the base and the ring and configured to move the position of the ring relative to the base along a preferably substantially vertical adjustment direction.
F16C 35/00 - Supports rigides de paliersCorps de paliers, p. ex. calottes, couvercles
F16H 1/00 - Transmissions à engrenages pour transmettre un mouvement rotatif
D01D 10/04 - Support des filaments ou similaires pendant leur traitement
F16H 1/22 - Transmissions à engrenages pour transmettre un mouvement rotatif sans engrenages à mouvement orbital comportant plus de deux organes engrenés avec plusieurs arbres d’entraînement ou entraînésTransmissions à engrenages pour transmettre un mouvement rotatif sans engrenages à mouvement orbital comportant plus de deux organes engrenés avec dispositions pour répartir le couple entre plusieurs arbres intermédiaires
6.
Apparatus for stretching acrylic fibres tows in a pressurised steam environment
t), delimiting a stretching chamber (2). The stretching chamber (2) has a generally rectangular section of a low height and opens outwards in correspondence of the two transversal edges of the stretching chest (1) through tow entry and exit openings. Inside the stretching chambers (2) the tows are treated with saturated or overheated steam at high temperature and pressure and simultaneously undergo a mechanical stretching operation.
D02J 1/22 - Étirage ou tension, retrait ou relâchement, p. ex. par utilisation d'appareils sur ou sous-alimentés ou empêchant l'étirage
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
Transmission joint for a feed member for a fibre material in a laboratory spinning line, comprising a shaft (29) extending along a rotation axis (C) between a first end (29a), coupled to an actuator (23), and a second end (29b) connectable to a feed roller (9) of advancement of fibre material and a containment body (26) extending around the shaft (29), rotatably associated to it, and provided with at least a junction portion (26a) provided with an outer surface having a plurality of coupling areas (27) angularly spaced from each other around the rotation axis (C).
Process module for a spinning line of laboratory chemical fibres, comprising a frame (2) extending along a feed direction (A) of the fibres, at least one washing or spinning tank (7) anchored to the frame (2), at least one feed member (8) disposed above and/or in part embedded in the tank (7), and provided with at least one roller (9) rotatable about a rotation axis (C) transverse to the feed direction (A) and support means (10, 11) of said tank (7) and/or of said feed member (8). The frame (2) comprises a longitudinal guide (5) extending along feed direction (A), the support means (10, 11) of said tank (7) and/or of said feed member (8) are provided with at least one shoe (12, 13) slidingly coupled to the guide (5) to allow the movement and positioning of said tank (7) and/or of the feed member (8) along feed direction (A) and equipped with at least one clamping member (14) switchable between a rest configuration in which the shoe (12, 13) is freely slidable along the guide (5), and an operative configuration, preventing the shoe (12, 13) from sliding along the guide (5) by locking its position.
A crimping machine for the treatment of chemical fibers, comprises a conduit (2) extending along an advancement direction (A) between an inlet opening (2a), associable to means for feeding a bundle (F) of fibre material, and an outlet opening (2b), a drive unit (3) arranged along the conduit (2) and comprising a first (4) and a second drive member (5) abutted to each other in correspondence of at least a maximum proximity area (Z) in cui they exert a driving action on the bundle (F) of fibre material, a crimping chamber (10) arranged immediately downstream of the drive unit (3), and configured to receive said bundle (F) of fibre material contributing to the mechanical deformation of the same by peak load. The first drive member (4) and the second drive member (5) are configured so as to define a deviation (D) along the conduit (2) such that the inlet opening (2a) of the conduit (2) has different orientation with respect to said outlet opening (2b), wherein the first member (4), at least at the maximum proximity area (Z), is flexible to move closer or further away from the second member (5) as a function of the thickness of the bundle (F).
D02G 1/12 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes avec utilisation de boîtes à bourrage
10.
ADVANCEMENT MEMBER FOR FIBRE MATERIAL AND CARBONIZATION FURNACE FOR THE PRODUCTION OF CARBON FIBRE
An advancement member of a fibre material for a carbonization line for the production of carbon fibres comprises a support structure (2) extending between two end sections (2a) along a direction of advance (A) of the fibre material, a plurality of feed rollers (4, 5) for the fibre material, each rotatably associated to the support structure (2) by a pair of support elements (8), wherein the support elements (8) of an inlet roller (4a) and/or an outlet roller (4b) comprise a base (8a) integral with said support structure (2), a support ring (8b) coupled with the base (8a) and having at least a through opening for receiving one end of the respective feed roller (4a, 4b) and adjusting means (8c) operatively interposed between the base (8a) and the ring (8b) and configured to move the position of the ring (8b) relative to the base (8a) along a preferably substantially vertical adjustment direction (B).
B65H 51/32 - Dispositifs de support ou d'entraînement pour les appareils de défilement
F16C 33/76 - Dispositifs d'étanchéité pour roulements à billes ou à rouleaux
F16C 35/04 - Supports rigides de paliersCorps de paliers, p. ex. calottes, couvercles dans le cas de roulements à billes ou à rouleaux
F16H 1/00 - Transmissions à engrenages pour transmettre un mouvement rotatif
11.
Support element for a feed roller and advancement member for a fiber material, carbonization line to produce carbon fibers and method for adjusting inclination of the feed roller
A support element for a feed roller for a fibre material, preferably a precursor fibre, to be used in an oxidation or carbonization line for producing carbon fibres, including a base provided with means for attachment to a structure or frame of the oven, a support ring coupled with the base and having at least one passing-through opening for receiving one end of the feed roller, and adjustment means operatively interposed between the base and the ring, and configured to move the position of the ring with respect to the base along at least one adjustment direction, transverse to a central axis of the opening, in order to adjust the position of the ring as a function of the deformations of the roller.
B65H 23/26 - Positionnement, tension, suppression des à-coups ou guidage des bandes longitudinal par barres ou rouleaux transversaux fixes ou réglables
B65H 23/32 - Dispositions pour tourner ou renverser les bandes
F16C 23/00 - Paliers pour mouvement de rotation exclusivement réglables pour alignement ou positionnement
F16C 35/04 - Supports rigides de paliersCorps de paliers, p. ex. calottes, couvercles dans le cas de roulements à billes ou à rouleaux
A stretching apparatus of fibre tows in a pressurized steam environment comprises a plurality of stretching chests (1) and associated supporting structures (3, 4, 6) arranged side by side, at the same level, on a holding frame. The stretching chests (1) are each formed by two opposed metallic half-chests (1b, 1t), delimiting a stretching chamber (2). The stretching chamber (2) has a generally rectangular section of a low height and opens outwards in correspondence of the two transversal edges of the stretching chest (1) through tow entry and exit openings. Inside the stretching chambers (2) the tows are treated with saturated or overheated steam at high temperature and pressure and simultaneously undergo a mechanical stretching operation. The half-chests (1b, 1t) are free to expand in the length direction within surrounding, rigid and pressure-resistant supporting structures (3, 4, 6) which precisely define the position of said stretching half-chests (1b, 1t) in the direction of their height. The half-chests are also mutually movable to cause opening and closing of each single stretching chest (1), independently from the others, for the insertion of the tows being processed, by means of an opening/closing mechanism of the upper half-chest (1t) with respect to the lower half-chest (1b).
D02J 1/22 - Étirage ou tension, retrait ou relâchement, p. ex. par utilisation d'appareils sur ou sous-alimentés ou empêchant l'étirage
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical fiber spinning machines; Fiber blowing machines; Fiber scutching machines; Fiber cutting machines; Wringing machines for laundry; Textile washing machines; Textile milling machines; Textile production machines; Textile scutching machines; Textile tentering machines; Textile calendering machines; Card type textile machines; Printing machines [for textile]; Scouring machines for textiles; Machines for dyeing textiles; Ironing machines for textile articles; Machines for printing textile materials; Twisting frames being textile machines; Raising machines for textile treating; Machines for the textile industry; Material production and processing machines; Spray damping machines [for textile treatment]; Textile washing machines [for industrial purposes]; Machines for the handling of materials; Automated machines for loading materials; Machines for manufacturing packaging materials; Machines for separating recyclable materials; Screens for the printing of textile materials [parts of machines]; Machines and machine tools for treatment of materials and for manufacturing; Precision machine tools for cutting materials; Precision machine tools for machining workpieces; Lifting machines for transporting bulk materials; Size reduction machines for hard materials; Discharge screws for gaseous materials [parts of machines]; Discharge screws for liquid materials [parts of machines]; Discs made of abrasive materials [parts of machines]; Brake parts (Machine -) made of materials having frictional properties; Stamping machines for pressing [shaping] components from sheet materials; Stamping machines for pressing out components from sheet materials; Perforated drums being parts of machines for sorting materials; Perforated plates being parts of machines for sorting materials; Cutting tools [machine] made of sintered materials based on nitrides; Perforated screens being parts of machines for sorting of materials. Polymerisation installations; Chemical processing equipment. Installation, maintenance and repair in relation to machines for spinning chemical fibres, machines for blowing fibres, machines for scutching fibres, machines for cutting fibres, wringing machines for laundry; Installation, maintenance and repair in relation to machines for washing textiles, textile fulling machines, machines for producing textiles, textile scutching machines, stenters for textiles; Installation, maintenance and repair in relation to machines for calendering of textiles, textile carding machines, printing machines (for textiles), machines for washing of textile goods, machines for dyeing textiles; Installation, maintenance and repair in relation to ironing machines for textile articles, machines for printing textile materials, twisting frames being machine tools, raising machines for textile treating; Installation, maintenance and repair in relation to machines for the textile industry, machines for production and processing of materials, nebulising humidifiers (for treating textiles), textile-washing machines (for use in industry); Installation, maintenance and repair in relation to machines for handling materials, automated machines for loading materials, machines for manufacturing packaging material; Installation, maintenance and repair in relation to machines for separating recyclable materials, screens for printing of textile materials (parts of machines), machines and machine tools for the treatment of materials and for manufacture, precision machine tools for cutting of materials; Installation, maintenance and repair in relation to precision machine tools for machining pieces, raising machines for transport of bulk materials, machines for reducing the dimensions of hard materials, drain screws for gaseous materials (parts of machines); Installation, maintenance and repair in relation to drain screws for liquid materials (parts of machines), discs of abrasive materials (parts of machines), parts of brakes (for machines) of materials with frictional properties, moulding machines for pressing (shaping) components from sheet materials; Installation, maintenance and repair in relation to moulding machines for extracting via pressing of components from sheet materials, perforated shafts being parts of machines for sorting of materials, perforated plates being parts of machines for separating materials; Installation, maintenance and repair in relation to cutting tools (machines) of sintered materials based on nitrides, perforated screens being parts of machines for sorting of materials,, polymerisation installations, equipment for chemical processes. Design in relation to machines for spinning chemical fibres, machines for blowing fibres, machines for scutching fibres, machines for cutting fibres; Design in relation to wringing machines for laundry, machines for washing textiles, textile fulling machines, machines for producing textiles, textile scutching machines; Design in relation to stenters for textiles, machines for calendering of textiles, textile carding machines, printing machines (for textiles); Design in relation to machines for washing of textile goods, machines for dyeing textiles, ironing machines for textile articles, machines for printing textile materials; Design in relation to twisting frames being machine tools, raising machines for textile treating, machines for the textile industry; Design in relation to machines for production and processing of materials, nebulising humidifiers (for treating textiles), textile-washing machines (for use in industry), machines for handling materials,; Design in relation to automated machines for loading materials, machines for manufacturing packaging material, machines for separating recyclable materials, screens for printing of textile materials (parts of machines); Design in relation to machines and machine tools for the treatment of materials and for manufacture, precision machine tools for cutting of materials, precision machine tools for machining pieces; Design in relation to raising machines for transport of bulk materials, machines for reducing the dimensions of hard materials, drain screws for gaseous materials (parts of machines); Design in relation to drain screws for liquid materials (parts of machines), discs of abrasive materials (parts of machines), parts of brakes (for machines) of materials with frictional properties, moulding machines for pressing (shaping) components from sheet materials; Design in relation to moulding machines for extracting via pressing of components from sheet materials, perforated shafts being parts of machines for sorting of materials, perforated plates being parts of machines for separating materials; Design in relation to cutting tools (machines) of sintered materials based on nitrides, perforated screens being parts of machines for sorting of materials,, polymerisation installations, equipment for chemical processes.
14.
Apparatus for stretching acrylic fibers in a pressurized steam environment and automatic fiber drawing-in device for said apparatus
A stretching apparatus of fibre tows in a pressurized steam environment includes an elongated stretching chamber having a generally rectangular section of a low height, within which the tows are treated with saturated or overheated steam at high temperature and pressure and simultaneously undergo a mechanical stretching operation. The stretching chamber has a width sufficient to house multiple tows mutually flanked in a running plane and is formed within a stretching chest made of aluminum. The stretching chest is housed in a supporting structure, having a higher structural rigidity than the stretching chest, which includes a plurality of contact elements apt to determine a predefined position of the stretching chest with respect to a direction perpendicular to the tow running plane and to allow a limited mobility of the stretching chest in the other two mutually perpendicular directions which lie in the plane, length and width respectively.
D06C 7/00 - Chauffage ou refroidissement de tissus textiles
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
D06B 17/00 - Accumulation de matières textiles associée à un traitement de ces matières par des liquides, gaz ou vapeurs
15.
APPARATUS FOR STRETCHING ACRYLIC FIBERS IN A PRESSURIZED STEAM ENVIRONMENT AND AUTOMATIC FIBER DRAWING-IN DEVICE FOR SAID APPARATUS
A stretching apparatus of fibre tows in a pressurized steam environment comprises an elongated stretching chamber (2) having a generally rectangular section of a low height, within which the tows (T) are treated with saturated or overheated steam at high temperature and pressure and simultaneously undergo a mechanical stretching operation. The stretching chamber (2) is of a width sufficient to house multiple tows (T) mutually flanked in a running plane and is formed within a stretching chest (1) made of aluminium. Said stretching chest (1) is housed in a supporting structure (3-9), having a higher structural rigidity than the stretching chest (1), which comprises a plurality of contact elements (8-9) apt to determine a predefined position of the stretching chest (1)' with respect to a direction perpendicular to the tow running plane (z axis) and to allow a limited mobility of the stretching chest (1) in the other two mutually perpendicular directions which lie in said plane (x and y axes), length and width respectively, sufficient to allow the free thermal expansion of the stretching chest (1) in these two directions while maintaining the same planar notwithstanding the effect of inner stresses apt to cause arching or twisting of the stretching chest (1).
D02J 1/22 - Étirage ou tension, retrait ou relâchement, p. ex. par utilisation d'appareils sur ou sous-alimentés ou empêchant l'étirage
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
Process for manufacturing carbon fibers, includes a first spinning step of a fiber of PAN precursor and a second oxidation/carbonization step of the fiber and the plant thereof. The spinning and oxidation/carbonization steps are performed directly in line and continuously, and hence without any stocking buffer area of a PAN precursor between the two steps. The spinning step is performed at low speed, so that the output speed from the spinning step, downstream of the stretching operations, is a speed falling within the range of the suitable processing speeds in the subsequent oxidation/carbonization step. Moreover, the spinning step is performed in a modular way on a plurality of spinning modules aligned in one or more rows, each spinning module having a productivity not above 10% of the overall productivity of the spinning step. In any individual spinning module, the fibers downstream of the spinning area follow zig-zag, rectilinear paths.
D01D 7/00 - Réception des produits nouvellement filés
D01F 9/22 - Filaments de carboneAppareils spécialement adaptés à leur fabrication par décomposition de filaments organiques à partir de produits de polyaddition, de polycondensation ou de polymérisation à partir de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone à partir de polyacrylonitriles
D01D 10/04 - Support des filaments ou similaires pendant leur traitement
Process for manufacturing carbon fibres, of the type comprising a first spinning step of a fibre of PAN precursor and a second oxidation/carbonisation step of said fibre and the plant thereof. The spinning and oxidation/carbonisation steps are performed directly in line and continuously, and hence without any stocking buffer area of a PAN precursor between the two steps. The spinning step is performed at low speed, so that the output speed from the spinning step, downstream of the stretching operations, is a speed falling within the range of the suitable processing speeds in the subsequent oxidation/carbonisation step. Moreover, the spinning step is performed in a modular way on a plurality of spinning modules (M) aligned in one or more rows (A, B), each spinning module (M) having a productivity not above 10% of the overall productivity of the spinning step. In any individual spinning module (M), the fibres downstream of the spinning area follow zig-zag, rectilinear paths through deviation and driving rollers (3-5), both in a horizontal direction and in a vertical direction, along which paths the various spinning treatments are carried out. Finally the fibre tows coming out from each spinning module (M) are arranged side by side, without undergoing transversal deviations with respect to the progress direction thereof, to form a single belt (N) feeding the oxidation/carbonisation step.
D01F 9/22 - Filaments de carboneAppareils spécialement adaptés à leur fabrication par décomposition de filaments organiques à partir de produits de polyaddition, de polycondensation ou de polymérisation à partir de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone à partir de polyacrylonitriles
Crimping machine for chemical-fiber filaments with crimping chamber having an oscillating upper plate loaded with a closure force for imparting a pressure on the tow which passes through the crimping chamber, wherein the plates of the crimping chamber are mounted on respective supports through two or more linear guides provided with a roller or ball recirculation system. The longitudinal operating position is determined by two pairs of hydraulic cylinders, having an axis parallel to the linear guides, which maintain the plates, or a portion thereof, pushed against respective fixed abutments without the use of further mechanical or oleodynamic blocking elements. Load cells are arranged between the abutments and the plates, for detecting the variations of the tightening force during machine operation, the variations, representative of the variable longitudinal force imparted by the filaments of the tow being processed on the plates, are used for monitoring the quality of the crimp obtained.
D02G 1/12 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes avec utilisation de boîtes à bourrage
