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WO2008139004A1 - Procédé de fabrication d'un conduit ondulé à trois couches, tête utilisée dans la fabrication de ce conduit et conduit ainsi obtenu - Google Patents

Procédé de fabrication d'un conduit ondulé à trois couches, tête utilisée dans la fabrication de ce conduit et conduit ainsi obtenu Download PDF

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Publication number
WO2008139004A1
WO2008139004A1 PCT/ES2007/070092 ES2007070092W WO2008139004A1 WO 2008139004 A1 WO2008139004 A1 WO 2008139004A1 ES 2007070092 W ES2007070092 W ES 2007070092W WO 2008139004 A1 WO2008139004 A1 WO 2008139004A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
pipe
corrugated
manufacturing
central
Prior art date
Application number
PCT/ES2007/070092
Other languages
English (en)
Spanish (es)
Inventor
Constantino Gonzalez Gomez
Original Assignee
Uralita Sistemas De Tuberias, S.A.
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 Uralita Sistemas De Tuberias, S.A. filed Critical Uralita Sistemas De Tuberias, S.A.
Priority to PT2007070092A priority Critical patent/PT2008139004W/pt
Priority to ES200950055A priority patent/ES2370484B1/es
Priority to PCT/ES2007/070092 priority patent/WO2008139004A1/fr
Publication of WO2008139004A1 publication Critical patent/WO2008139004A1/fr

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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • 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
    • 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
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
    • 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
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • F16L47/08—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • 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
    • 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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/18—Pleated or corrugated hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/18—Pleated or corrugated hoses
    • B29L2023/186—Pleated or corrugated hoses having a smooth internal wall

Definitions

  • the object of the present invention is both the manufacturing process of a three-layer corrugated pipe, and the head used in the manufacture of the outer layer of the pipe as well as the pipe obtained by the present process.
  • Also characterized by the present invention is the special configuration and design of the head used in the manufacture of the outer layer of the three-layer corrugated pipe.
  • the present invention is circumscribed within the scope of structured pipes and more precisely within three-layer corrugated pipes.
  • corrugated pipes are known, some of them as the type of pipes shown in EP 385465, although a corrugated pipe is shown, is not a three-layer pipe, it is also formed by a series of alveolar assemblies emerging from a flat surface arranged at the base.
  • three-layer corrugated pipes are known, which are formed by a central and corrugated layer with any design, arranged between a lower layer that would chew the inside of the pipe, a layer that is smooth and cylindrical, and between an outer layer that would be the layer exterior of the pipe, also smooth and cylindrical.
  • the manufacturing of the third layer is not carried out by means of an extrusion head that applies said third layer directly on the corrugated core of the pipe.
  • Another difficulty present in the existing manufacturing process is the absence of any flare operation of the pipe ends once obtained with a specific design that allows the connection between sections of three-corrugated pipes in a simple, easy and efficient way. . Therefore, it is the object of the present invention to overcome the drawbacks derived from the existing manufacturing process so far in the manufacture of three-layer corrugated pipes, improving the required stages, the materials used in the manufacturing as well as the precise machinery for said finish.
  • the present invention aims at a process for manufacturing a three-layer corrugated pipe, as well as the means used in the manufacture of said pipe, and the pipe obtained by the process and the means described.
  • the manufacturing process of a three-layer corrugated pipe starting from a base assembly formed a central corrugated layer arranged on a bottom or base layer, which is smooth and cylindrical and forms the inner face of the final pipe, and consists of the following stages:
  • Said base assembly is passed through an extrusion head that applies the third layer that supports it on the crests of the central or core layer.
  • Flare of at least one end of the pipe that allows the coupling and connection of two sections of three-corrugated pipe tightly.
  • the material used in the manufacture of the three-layer pipe is polypropylene, this material against polyethylene has a better mechanical and thermal behavior.
  • Polypropylene has one of the highest tensile elongations, it is one of the materials that have more resistance to the impact of all thermoplastics and is harder than polyethylene, also has a higher melting temperature than polyethylene and a plastic memory that allows it to recover its position after deformation.
  • the third layer application head in the three-layer corrugated pipe manufacturing process has a general annular configuration that allows a perfect application on the ridges of the corrugated central layer, in addition to being able to regulate the thickness or thickness of the third layer.
  • Figure 1 shows a representation of the structure and composition of a three-layer corrugated pipe.
  • Figure 2 shows a sectional head of the third layer in the manufacturing process of the third layer.
  • Figure 3 shows two sections of pipe arranged to be connected where on one of the edges of a section of pipe a flare has been made.
  • Figure 4 shows the previous connected pipes.
  • Figure 1 shows the structural configuration of a three-layer corrugated pipe such as that of the invention, which is formed by a corrugated central layer (2), arranged on a smooth and cylindrical base layer (1) that will be the inner face of the final pipe On the upper crests of the central layer there is a third layer (3) that will be the outer face of the pipe.
  • corrugated central layer The geometry and configuration of the corrugated central layer are not limiting, being able to choose the configuration that could best adapt to the intended purposes.
  • the essentiality of the invention lies in the process of manufacturing the pipe and more specifically in that of the third layer (3) of the three-layer corrugated pipe, as well as in the following flaring process carried out on at least one of the ends of the pipe once obtained.
  • the third layer (3) is applied by extrusion, using an application extruder head that allows the regulation of the width or thickness of the third layer (3).
  • the head (4) of application of the third layer which has a general annular configuration, which has a body (5) on which there is a part or distributor (6) of material of the third layer (3).
  • Said distributor piece (6) is arranged concentrically with respect to the body (5).
  • a female part (8) responsible for calibrating the outer diameter that the third layer would have, as well as a male part (7) that will be responsible for defining the inner diameter of the third layer (3) .
  • a mechanism (9) that allows to regulate the thickness of the third layer.
  • the extrusion head (4) logically, must be connected by means of a coupling piece (11) through which the material (10) used in the manufacture of the third layer flows, with the reservoir or source supplying the material used in the extrusion of the third layer.
  • said flare (17) taken from the innermost part of the pipe towards its free end will be formed by a first inclined section (12) that would increase its internal diameter, followed by a straight section (13) followed by a thickening (14) made outwards, which defines inside the pipe a housing (15) of an elastomeric joint (18) (figure 4).
  • the connection point between the inclined section (12) and the straight section defines a stop point (16) to which the pipe to be connected can penetrate, as can be seen in Figure 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé destiné à la fabrication d'un conduit ondulé à trois couches conçu sur la base d'un agencement formé par une couche ondulée centrale (2) disposée sur une couche cylindrique lisse (1), sur laquelle une troisième couche (3) est appliquée à l'aide d'une tête d'extrusion qui applique la troisième couche (3) de manière uniforme sur les crêtes de la couche ondulée centrale (2), ce qui permet de réguler l'épaisseur de la troisième couche (3). Le procédé consiste ensuite à étendre au moins une des extrémités libres afin de former un raccord étanche entre des sections de conduit, l'ensemble formé comprenant une section inclinée suivie d'une section horizontale, puis d'un ré-élargissement dont la partie inférieure comporte un logement pour un joint élastomère.
PCT/ES2007/070092 2007-05-14 2007-05-14 Procédé de fabrication d'un conduit ondulé à trois couches, tête utilisée dans la fabrication de ce conduit et conduit ainsi obtenu WO2008139004A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PT2007070092A PT2008139004W (pt) 2007-05-14 2007-05-14 Método para o fabrico de um tubo corrugado de parede tripla, cabeça utilizada no seu fabrico e tubo assim obtido
ES200950055A ES2370484B1 (es) 2007-05-14 2007-05-14 Procedimiento de fabricación de tubería corrugada tricapa, cabezal en la fabricación y la tubería así obtenida.
PCT/ES2007/070092 WO2008139004A1 (fr) 2007-05-14 2007-05-14 Procédé de fabrication d'un conduit ondulé à trois couches, tête utilisée dans la fabrication de ce conduit et conduit ainsi obtenu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2007/070092 WO2008139004A1 (fr) 2007-05-14 2007-05-14 Procédé de fabrication d'un conduit ondulé à trois couches, tête utilisée dans la fabrication de ce conduit et conduit ainsi obtenu

Publications (1)

Publication Number Publication Date
WO2008139004A1 true WO2008139004A1 (fr) 2008-11-20

Family

ID=38972954

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2007/070092 WO2008139004A1 (fr) 2007-05-14 2007-05-14 Procédé de fabrication d'un conduit ondulé à trois couches, tête utilisée dans la fabrication de ce conduit et conduit ainsi obtenu

Country Status (3)

Country Link
ES (1) ES2370484B1 (fr)
PT (1) PT2008139004W (fr)
WO (1) WO2008139004A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102390118A (zh) * 2011-10-24 2012-03-28 广东联塑机器制造有限公司 一种三壁波纹管生产设备及生产方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385465A2 (fr) * 1989-03-03 1990-09-05 Pipelife Rohrsysteme GmbH Procédé de fabrication d'un égout en matière plastique
DE29706044U1 (de) * 1996-09-19 1997-06-26 Unicor Rohrsysteme GmbH, 97437 Haßfurt Mehrschichtiges Kunststoffrohr
EP1146272A1 (fr) * 2000-04-12 2001-10-17 Eureka Immobiliare S.r.l. Tuyau ondulé avec une feuille de protection extérieure
US20030090112A1 (en) * 2001-11-14 2003-05-15 Brad Baughman Pipe joint assembly
US20050208166A1 (en) * 2004-03-19 2005-09-22 Leseman Steven R Adjustable extrusion die
WO2005098302A1 (fr) * 2004-04-08 2005-10-20 Lupke Manfred Arno Alfred Procede destine a former un tuyau ondule avec un siege de joint de bout male de tuyau

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372920A (en) * 1965-07-12 1968-03-12 Nat Distillers Chem Corp Method for producing thermoplastic sheet material
DE2042031A1 (de) * 1970-08-25 1972-05-31 Reifenhaeuser Kg Verfahren und Vorrichtung zur Herstellung von Wellrohren aus thermoplastischem Kunststoff
DE4240268A1 (de) * 1992-12-01 1994-06-09 Wilhelm Hegler Verfahren und Vorrichtung zur fortlaufenden Herstellung eines Verbundrohres mit einem außen im wesentlichen glatten Abschnitt
DE19504501A1 (de) * 1995-02-13 1996-08-14 Wilhelm Hegler Verfahren und Anlage zur Herstellung eines Mehrschicht-Rohres aus thermoplastischem Kunststoff, insbesondere Polyolefin

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385465A2 (fr) * 1989-03-03 1990-09-05 Pipelife Rohrsysteme GmbH Procédé de fabrication d'un égout en matière plastique
DE29706044U1 (de) * 1996-09-19 1997-06-26 Unicor Rohrsysteme GmbH, 97437 Haßfurt Mehrschichtiges Kunststoffrohr
EP1146272A1 (fr) * 2000-04-12 2001-10-17 Eureka Immobiliare S.r.l. Tuyau ondulé avec une feuille de protection extérieure
US20030090112A1 (en) * 2001-11-14 2003-05-15 Brad Baughman Pipe joint assembly
US20050208166A1 (en) * 2004-03-19 2005-09-22 Leseman Steven R Adjustable extrusion die
WO2005098302A1 (fr) * 2004-04-08 2005-10-20 Lupke Manfred Arno Alfred Procede destine a former un tuyau ondule avec un siege de joint de bout male de tuyau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102390118A (zh) * 2011-10-24 2012-03-28 广东联塑机器制造有限公司 一种三壁波纹管生产设备及生产方法

Also Published As

Publication number Publication date
ES2370484A1 (es) 2011-12-16
PT2008139004W (pt) 2010-06-15
ES2370484B1 (es) 2012-11-27

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