ES2232212A1 - Extrusion and net-forming machine is for manufacture of hoses of thermo-plastic material covered by reinforcing textile netting - Google Patents
Extrusion and net-forming machine is for manufacture of hoses of thermo-plastic material covered by reinforcing textile nettingInfo
- Publication number
- ES2232212A1 ES2232212A1 ES200000416A ES200000416A ES2232212A1 ES 2232212 A1 ES2232212 A1 ES 2232212A1 ES 200000416 A ES200000416 A ES 200000416A ES 200000416 A ES200000416 A ES 200000416A ES 2232212 A1 ES2232212 A1 ES 2232212A1
- Authority
- ES
- Spain
- Prior art keywords
- hose
- extrusion
- mesh
- extruder
- hoses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow articles
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- B29C47/021—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
Abstract
Description
Máquina extrusora y malladora para la fabricación de mangueras de material termoplástico recubiertas de malla textil de refuerzo.Extruder and grinder machine for manufacture of thermoplastic material coated hoses reinforcement textile mesh.
La presente invención se refiere a una nueva máquina extrusora y malladora para la fabricación de mangueras de material termoplástico recubiertas de malla textil de refuerzo, del tipo de las que están constituidas por un dispositivo de extrusión de la manguera y un dispositivo de conformación de la malla, constando el dispositivo de extrusión de la manguera de un noyo interior y de un cuerpo tubular exterior coaxiales, entre los cuales queda formado un espacio tubular por el que la materia prima avanza en estado termofundido y es extrudida, que determina el diámetro interno y el grosor de la manguera, y constando el dispositivo de conformación de la malla de un cabezal rotativo de mallado, que gira coaxialmente alrededor de la manguera, adaptado para la aplicación sobre esta última, en el sentido radial de la misma, de múltiples hilos que son desdevanados de sendas bobinas que giran solidariamente al cabezal rotativo de mallado.The present invention relates to a new extruder and meshing machine for the manufacture of hoses thermoplastic material covered with textile reinforcement mesh, type of those consisting of an extrusion device of the hose and a mesh shaping device, consisting of a noyo hose extrusion device inside and of a coaxial outer tubular body, between the which is formed a tubular space through which the raw material advances in a thermofused state and is extruded, which determines the internal diameter and thickness of the hose, and the mesh shaping device of a rotating head of mesh, which rotates coaxially around the hose, adapted for application on the latter, in the radial direction of the same, of multiple threads that are wound from two coils which rotate in solidarity with the rotating mesh head.
La máquina de la presente invención encuentra especial aplicación en la fabricación de mangueras de goma, caucho u otras resinas sintéticas o naturales, para el transporte de fluidos.The machine of the present invention finds Special application in the manufacture of rubber hoses, rubber or other synthetic or natural resins, for the transport of fluids
En el campo de la fabricación de mangueras aplicables al transporte de fluidos, de caucho o goma, provistas de refuerzos textiles, es conocido desde hace tiempo el empleo de máquinas extrusoras y malladoras del tipo indicado al comienzo. Por lo general, tales máquinas constan de una parte extrusora y de una parte malladora.In the field of hose manufacturing applicable to the transport of fluids, rubber or rubber, provided with textile reinforcements, the use of extruders and grinders of the type indicated at the beginning. By In general, such machines consist of an extruder and a mesh part.
La parte extrusora comprende un husillo de filetes helicoidales, un noyo y un cuerpo tubular exterior, coaxial al noyo, quedando formado entre este último y el cuerpo tubular exterior un espacio tubular por el que la materia prima avanza en estado termofundido y es extrudida, que determina el diámetro interno y el grosor de la manguera.The extruder part comprises a spindle of helical fillets, a noyo and an outer tubular body, coaxial to the noyo, being formed between the latter and the body outer tubular a tubular space through which the raw material advances in a thermofused state and is extruded, which determines the internal diameter and thickness of the hose.
La parte malladora de la máquina está dispuesta axialmente a continuación del noyo y está formada por un cabezal rotativo de mallado, que gira coaxialmente alrededor de la manguera aplicando sobre la misma, en sentido radial, múltiples hilos que son desdevanados de sendas bobinas que giran alrededor de la manguera dispuestas solidarias al cabezal rotativo de mallado, una vez que la manguera ya ha salido del espacio determinado por el noyo y el cuerpo cilíndrico.The meshing part of the machine is arranged axially following the noyo and is formed by a head rotating mesh, which rotates coaxially around the hose applying on the same, radially, multiple threads that they are drawn from two coils that revolve around the hose arranged in solidarity with the rotary mesh head, a once the hose has already left the space determined by the noyo and the cylindrical body.
Las máquinas conocidas de este tipo, si bien gozan mayoritariamente de una correcta funcionalidad, no están exentas de ciertos problemas e inconvenientes, de entre los que cabe citar los siguientes:Known machines of this type, although enjoy mostly correct functionality, they are not exempt from certain problems and inconveniences, among which The following should be mentioned:
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- la manguera se colapsa tras la extrusión, debido a la pérdida de consistencia del material termoplástico constitutivo de la misma;the hose is collapses after extrusion, due to the loss of consistency of thermoplastic material constituting the same;
- --
- como consecuencia, la máquina requiere la aplicación de aire a presión por el interior de la manguera con objeto de que mantenga su diámetro, lo cual obliga a implantar y mantener caras instalaciones de aire comprimido adicionales; ydue, the machine requires the application of pressurized air inside of the hose in order to maintain its diameter, which forces to install and maintain expensive air installations additional tablet; Y
- --
- las mangueras muestran marcas debidas a los nudos de los hilos.the hoses show marks due to thread knots.
Para dar solución simultánea a todos estos inconvenientes y problemas, se ha ideado la máquina extrusora y malladora de la presente invención.To give simultaneous solution to all these inconveniences and problems, the extruder machine has been devised and Mesh of the present invention.
El objeto de la presente invención es una máquina extrusora y malladora de mangueras de material termoplástico del tipo indicado al inicio, de novedoso concepto y funcionalidad, que en su esencia se caracteriza porque el cabezal rotativo está dispuesto en adyacencia al extremo del citado noyo, realizando la aplicación de los hilos sobre la manguera inmediatamente después de que ésta salga del citado espacio tubular de extrusión.The object of the present invention is a machine thermoplastic material hose extruder and grinder type indicated at the beginning, of novel concept and functionality, which in essence it is characterized because the rotating head is arranged adjacent to the end of said noyo, performing the application of the wires on the hose immediately after that it comes out of the said tubular extrusion space.
Así, la manguera es reforzada en un estado en que la misma presenta sus diámetros de diseño, sin que la pérdida de rigidez afecte negativamente al mallado y sin que se produzca consiguientemente el colapso de la manguera. Ello permite además prescindir de la aplicación de aire interior a presión y suprimir por tanto la fuente de aire comprimido, abaratando los costes de instalación, operación y simplificando el mantenimiento.Thus, the hose is reinforced in a state in which it presents its design diameters, without the loss of rigidity negatively affects the mesh and without it occurring consequently the collapse of the hose. This also allows dispense with the application of indoor air under pressure and suppress therefore the source of compressed air, lowering the costs of installation, operation and simplifying maintenance.
Según otra característica de la presente invención, la máquina comprende al menos un cojinete giratorio cuya parte fija es solidaria del citado noyo y del citado cuerpo tubular exterior, adaptado para soportar el movimiento de rotación del cabezal rotativo.According to another feature of the present invention, the machine comprises at least one rotating bearing whose fixed part is in solidarity with said noyo and said body outer tubular, adapted to withstand rotational movement of the rotating head.
A continuación se hace la descripción de formas de realización preferidas, aunque no exclusivas, de la máquina extrusora y malladora objeto de la presente invención, para cuya mejor comprensión se acompaña de unos dibujos, dados meramente a título de ejemplo no limitativo, en los cuales:Below is the description of forms preferred, but not exclusive, of the machine extruder and grinder object of the present invention, for whose better understanding is accompanied by some drawings, given merely to non-limiting example title, in which:
la Fig. 1 es una vista esquemática en alzado de una máquina extrusora y malladora de la presente invención; yFig. 1 is a schematic elevation view of an extruder and meshing machine of the present invention; Y
la Fig. 2 es una vista en corte parcial de la parte de la máquina de la Fig. 1 que ilustra el modo operativo del dispositivo de conformación de la malla.Fig. 2 is a partial sectional view of the part of the machine of Fig. 1 illustrating the operating mode of the mesh shaping device.
En dichos dibujos puede verse la constitución y funcionamiento de la máquina extrusora y malladora 1 de la presente invención, aplicable a la fabricación de mangueras 2 de material termoplástico, preferentemente de caucho, goma u otras resinas sintéticas o naturales, recubiertas de una malla textil de refuerzo 3. La malla 3 está constituida por múltiple fibras en forma de hilos 11 devanados helicoidalmente sobre la manguera 2, que son alimentadas desde al menos una correspondiente bobina 12. Tal manguera 2 es preferentemente de conformación tubular, aunque la presente invención también contempla la posibilidad de que sea de otra sección diferente de la circular, por ejemplo poligonal.In these drawings you can see the constitution and operation of the extruder and meshing machine 1 of the present invention, applicable to the manufacture of material hoses 2 thermoplastic, preferably rubber, rubber or other resins synthetic or natural, covered with a textile reinforcement mesh 3. Mesh 3 consists of multiple fibers in the form of threads 11 helically wound on hose 2, which are fed from at least one corresponding coil 12. Such hose 2 is preferably tubular shaped, although the The present invention also contemplates the possibility of another section different from the circular, for example polygonal.
La máquina de la invención consta (Fig. 1), como unidades operativas principales, de un dispositivo de extrusión 4 de la manguera 2 y de un dispositivo de conformación 5 de la malla. Un cuadro 23 de control, accionamiento y visualización complementa el conjunto.The machine of the invention consists (Fig. 1), as main operating units, of an extrusion device 4 of the hose 2 and a forming device 5 of the mesh. A control, actuation and display panel 23 complements set.
El dispositivo de extrusión o extrusora 4 comprende, de un modo conocido, una tolva 22 por la que el material termoplástico que debe conformar la manguera 2 se alimenta al interior del cuerpo 24 de la extrusora. El material termoplástico 9 avanza en estado termofundido por el interior de la extrusora 4, por acción de un husillo helicoidal 16, por el espacio definido entre la parte externa de este último y la parte interna de la caja 17 de la extrusora 4, en contacto con un dispositivo calefactor 27.The extruder or extruder 4 it comprises, in a known way, a hopper 22 through which the material thermoplastic that must conform the hose 2 is fed to the inside body 24 of the extruder. The thermoplastic material 9 advances in a thermofused state inside the extruder 4, by action of a helical spindle 16, by the defined space between the external part of the latter and the internal part of the box 17 of extruder 4, in contact with a heating device 27.
El material termoplástico fundido 9 continúa su avance penetrando, a través de un acoplamiento reductor de diámetro 28, en un espacio tubular 8 definido por la cara externa de un noyo 6 y la cara interior de un cuerpo tubular exterior 7, coaxial al noyo 6. El conjunto está situado en el seno de una cámara calefactora 15, adaptada para mantener a la materia prima en el estado de fusión conveniente.The molten thermoplastic material 9 continues its feed penetrating, through a diameter reduction coupling 28, in a tubular space 8 defined by the outer face of a noyo 6 and the inner face of an outer tubular body 7, coaxial to noyo 6. The set is located inside a camera heater 15, adapted to keep the raw material in the convenient melting state.
En la embocadura de salida de la extrusora 4, ésta comprende una pieza de graduación 21 del diámetro exterior de la manguera 2. La pieza 21 y el noyo 6 son elementos recambiables, en función de las condiciones de diseño de la manguera 2. Así, el diámetro exterior del noyo 6 y el diámetro interior de la pieza 21 en la zona de la salida de la extrusora determinan, respectivamente, el diámetro interior y el diámetro exterior de la manguera 2, y por lo tanto el grosor de la misma.At the exit mouth of extruder 4, this comprises a graduation piece 21 of the outer diameter of hose 2. Part 21 and noyo 6 are replaceable elements, depending on the design conditions of the hose 2. Thus, the outer diameter of the noyo 6 and the inner diameter of the piece 21 in the area of the extruder outlet determine, respectively, the inner diameter and outer diameter of the hose 2, and therefore the thickness of it.
El citado dispositivo de conformación 5 de la malla 3, ó malladora 5, consta de un cabezal rotativo 10 de mallado, accionado en rotación por un tambor rotativo motorizado 25, solidario de un bastidor 14, el cual está fijado al suelo por medio de soportes elásticos 26, absorbentes de vibraciones y demás esfuerzos dinámicos. El cabezal rotativo 10 gira soportado sobre cojinetes 13 solidarios del noyo 6 y del citado cuerpo tubular exterior 7.The aforementioned shaping device 5 of the mesh 3, or mesh 5, consists of a rotating head 10 of meshed, driven in rotation by a motorized rotating drum 25, integral with a frame 14, which is fixed to the ground by medium of elastic supports 26, vibration absorbers and others dynamic efforts The rotating head 10 rotates supported on 13 bearings of the noyo 6 and said tubular body exterior 7.
En la Fig. 2 se aprecia que el cabezal rotativo 10 comprende una tapa 18, que cubre los cojinetes 13 y que recibe el montaje solidario de unos brazos 29 de extensión radial. En los extremos de los brazos 29 hay dispuestos unos guiahilos exteriores 30 (Fig. 1), por los cuales pasan sendos hilos 11 procedentes de correspondientes bobinas 12 solidarias del tambor rotativo 25.In Fig. 2 it can be seen that the rotating head 10 comprises a cover 18, which covers the bearings 13 and which receives the solidarity assembly of radial extension arms 29. In the ends of the arms 29 there are arranged outer thread guides 30 (Fig. 1), through which two wires 11 from Corresponding coils 12 of the rotating drum 25.
Para cada bobina 12, el cabezal rotativo 10 dispone en su cara anterior de un guiahilos intermedio 19 y de un guiahilos interior 32. La bobina 12 y sus correspondientes guiahilos exterior 30, intermedio 19 e interior 32, están aproximadamente situados en un mismo plano que contiene al eje 37 de la máquina 1.For each coil 12, the rotating head 10 it has on its front face an intermediate thread guide 19 and a thread guide 32. Coil 12 and its corresponding thread guide outer 30, intermediate 19 and inner 32, are approximately located in the same plane that contains axis 37 of the machine 1.
Entre el extremo anterior de la pieza 21 y el extremo posterior de un elemento tubular anterior estático 31, queda definido un espacio anular 20 contiguo de la cara externa de la manguera 2, justo en la embocadura de salida de la extrusora 4, adaptado para el paso de los hilos 11 sobre la manguera 2.Between the front end of piece 21 and the rear end of a static anterior tubular element 31, an adjacent annular space 20 of the outer face of hose 2, right at the outlet mouth of extruder 4, adapted for the passage of the threads 11 over the hose 2.
Las bobinas 12, los guiahilos 19, 30 y 32, el cabezal rotativo 10, la tapa 18, los brazos 29 y los hilos 11, así como las piezas 33, 34, 35 y 36 del cabezal 10 que aparecen en la Fig. 2, giran solidariamente al tiempo que el material plástico termofundido 9 salga por la embocadura de salida de la extrusora 4. Cada hilo 11 es alimentado de desde su bobina 12, a través de los guiahilos 19, 30 y 32, y es tensado por éstos sobre la manguera 2, a la cual accede por el espacio anular 20. La manguera 2 arrastra a cada hilo 11 de modo que éste queda enrollado de manera helicoidal alrededor de la manguera 2 recién formada y, por lo tanto, justo en el momento en que la misma goza de sus dimensiones de diseño, quedando formada desde este mismo instante sobre ella una malla de refuerzo 3 que dificulta o impide su deformación, incluso antes de que se enfríe.Coils 12, thread guide 19, 30 and 32, the rotary head 10, cover 18, arms 29 and threads 11 as well as pieces 33, 34, 35 and 36 of head 10 that appear in the Fig. 2, rotate in solidarity while the plastic material thermofused 9 exit through the outlet opening of extruder 4. Each wire 11 is fed from its bobbin 12, through the thread guide 19, 30 and 32, and is tensioned by them on hose 2, which is accessed through the annular space 20. Hose 2 drags each thread 11 so that it is wound helically around the newly formed hose 2 and therefore just in the moment in which it enjoys its design dimensions, being formed from this moment on it a mesh of reinforcement 3 that hinders or prevents its deformation, even before Let it cool down.
Se apreciará que la máquina descrita no precisa suministro de presión interna para el mantenimiento dimensional de la manguera 2, puesto que éste ya queda garantizado por la aplicación inmediata de la malla de refuerzo 3. Además, la máquina de la invención puede ser mucho más compacta que las máquinas actuales, toda vez que la aplicación de las malla 3 se realiza en contigüidad a la propia extrusora 4.It will be appreciated that the described machine does not require internal pressure supply for dimensional maintenance of hose 2, since it is already guaranteed by the immediate application of the reinforcement mesh 3. In addition, the machine of the invention can be much more compact than machines current, since the application of the 3 mesh is done in contiguity to the extruder itself 4.
Descrita suficientemente la naturaleza de la presente invención, así como la manera de ponerla en práctica, se hace constar que todo aquello que no altere, cambie o modifique su principio fundamental, puede quedar sometido a variaciones de detalle.Describe sufficiently the nature of the The present invention, as well as how to implement it, is states that everything that does not alter, change or modify its fundamental principle, may be subject to variations of detail.
Lo principal, y por lo que se solicita patente de invención, por veinte años, es lo que queda glosado en las siguientes reivindicaciones.The main thing, and for which patent is applied for invention, for twenty years, is what is glossed in the following claims.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200000416A ES2232212B1 (en) | 2000-02-23 | 2000-02-23 | EXTRUDER AND MACHINE MACHINE FOR THE MANUFACTURE OF THERMOPLASTIC MATERIAL COVERS COATED WITH REINFORCED TEXTILE MESH. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200000416A ES2232212B1 (en) | 2000-02-23 | 2000-02-23 | EXTRUDER AND MACHINE MACHINE FOR THE MANUFACTURE OF THERMOPLASTIC MATERIAL COVERS COATED WITH REINFORCED TEXTILE MESH. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2232212A1 true ES2232212A1 (en) | 2005-05-16 |
| ES2232212B1 ES2232212B1 (en) | 2006-08-01 |
Family
ID=8492415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200000416A Expired - Lifetime ES2232212B1 (en) | 2000-02-23 | 2000-02-23 | EXTRUDER AND MACHINE MACHINE FOR THE MANUFACTURE OF THERMOPLASTIC MATERIAL COVERS COATED WITH REINFORCED TEXTILE MESH. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2232212B1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3138511A (en) * | 1960-05-05 | 1964-06-23 | Teleflex Inc | Apparatus for making a flexible conduit of helically wound wires |
| US3416982A (en) * | 1961-09-05 | 1968-12-17 | Petzetakis Aristovoulos George | Method of forming a reinforced seamless tubular element |
| ES364529A1 (en) * | 1968-03-09 | 1970-12-16 | Dunlop Co Ltd | A method for the manufacture of a flexible pipe. (Machine-translation by Google Translate, not legally binding) |
| US3905853A (en) * | 1970-05-21 | 1975-09-16 | Creators Ltd | Reinforced plastics tubes |
| US4202718A (en) * | 1976-12-09 | 1980-05-13 | Kuraray Plastics, Co., Ltd. | Method of and apparatus of manufacturing a fiber-reinforced pressure hose |
-
2000
- 2000-02-23 ES ES200000416A patent/ES2232212B1/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3138511A (en) * | 1960-05-05 | 1964-06-23 | Teleflex Inc | Apparatus for making a flexible conduit of helically wound wires |
| US3416982A (en) * | 1961-09-05 | 1968-12-17 | Petzetakis Aristovoulos George | Method of forming a reinforced seamless tubular element |
| ES364529A1 (en) * | 1968-03-09 | 1970-12-16 | Dunlop Co Ltd | A method for the manufacture of a flexible pipe. (Machine-translation by Google Translate, not legally binding) |
| US3905853A (en) * | 1970-05-21 | 1975-09-16 | Creators Ltd | Reinforced plastics tubes |
| US4202718A (en) * | 1976-12-09 | 1980-05-13 | Kuraray Plastics, Co., Ltd. | Method of and apparatus of manufacturing a fiber-reinforced pressure hose |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2232212B1 (en) | 2006-08-01 |
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