FR2397933A1 - Die and mandrel for extruding corrugated tubing - with a smooth internal lining, by co:extrusion of the coaxial components - Google Patents

Die and mandrel for extruding corrugated tubing - with a smooth internal lining, by co:extrusion of the coaxial components

Info

Publication number
FR2397933A1
FR2397933A1 FR7722538A FR7722538A FR2397933A1 FR 2397933 A1 FR2397933 A1 FR 2397933A1 FR 7722538 A FR7722538 A FR 7722538A FR 7722538 A FR7722538 A FR 7722538A FR 2397933 A1 FR2397933 A1 FR 2397933A1
Authority
FR
France
Prior art keywords
die
mandrel
extrudate
internal
corrugated tubing
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
Application number
FR7722538A
Other languages
French (fr)
Other versions
FR2397933B1 (en
Inventor
Rene Aubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
USINAGE TUBES POUR ELECTR
Original Assignee
USINAGE TUBES POUR ELECTR
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 USINAGE TUBES POUR ELECTR filed Critical USINAGE TUBES POUR ELECTR
Priority to FR7722538A priority Critical patent/FR2397933A1/en
Publication of FR2397933A1 publication Critical patent/FR2397933A1/en
Application granted granted Critical
Publication of FR2397933B1 publication Critical patent/FR2397933B1/fr
Granted legal-status Critical Current

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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0015—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die
    • 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
    • B29C48/16—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
    • 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
    • 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
    • B29C48/06—Rod-shaped
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2024/00—Articles with hollow walls
    • B29L2024/003—Articles with hollow walls comprising corrugated cores
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/601—Multi-tubular articles, i.e. composed of a plurality of tubes

Abstract

A device for making corrugated tubing with a smooth internal lining involves an extrusion die exuding a tubular extrudate with internal pressure to dilate the extrudate to conform with a series of travelling split moulds for shaping the external undulations. The die is fitted with a hollow coaxial mandrel suspended by radial ribs within the die and supporting an ancillary tube coaxially within the hollow mandrel. The tube supports a cantilevered head which plugs the core so that internal pressure can dilate the subsidiary extrudate between the head and a collar on the end of the mandrel extension, so that the internal extrudate dilates to contact and stick to the roots of the undulating profile of the external tube. Used for mfr. of composite hose combining radial stiffness with smooth bore flow characteristics, e.g. for feeding through of cables or probes without snagging. The corrugated and internal layers may be derived simultaneously from the same melt feed into a single extrusion die.
FR7722538A 1977-07-22 1977-07-22 Die and mandrel for extruding corrugated tubing - with a smooth internal lining, by co:extrusion of the coaxial components Granted FR2397933A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7722538A FR2397933A1 (en) 1977-07-22 1977-07-22 Die and mandrel for extruding corrugated tubing - with a smooth internal lining, by co:extrusion of the coaxial components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7722538A FR2397933A1 (en) 1977-07-22 1977-07-22 Die and mandrel for extruding corrugated tubing - with a smooth internal lining, by co:extrusion of the coaxial components

Publications (2)

Publication Number Publication Date
FR2397933A1 true FR2397933A1 (en) 1979-02-16
FR2397933B1 FR2397933B1 (en) 1980-04-04

Family

ID=9193671

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7722538A Granted FR2397933A1 (en) 1977-07-22 1977-07-22 Die and mandrel for extruding corrugated tubing - with a smooth internal lining, by co:extrusion of the coaxial components

Country Status (1)

Country Link
FR (1) FR2397933A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421048A1 (en) * 1978-03-30 1979-10-26 Cincinnati Milacron Austria Homogeneous concentric two-layer PVC tubing - extruded from one single head with flow divider and temp. regulators
WO1985002144A1 (en) * 1983-11-15 1985-05-23 Uponor Ab Single-wall pipe of plastics or other mouldable material and method and apparatus for continuously extruding such pipes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421048A1 (en) * 1978-03-30 1979-10-26 Cincinnati Milacron Austria Homogeneous concentric two-layer PVC tubing - extruded from one single head with flow divider and temp. regulators
WO1985002144A1 (en) * 1983-11-15 1985-05-23 Uponor Ab Single-wall pipe of plastics or other mouldable material and method and apparatus for continuously extruding such pipes
US4710337A (en) * 1983-11-15 1987-12-01 Uponor Ab Method and apparatus for continuously extruding single-wall pipe of plastics or other mouldable material

Also Published As

Publication number Publication date
FR2397933B1 (en) 1980-04-04

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Legal Events

Date Code Title Description
ST Notification of lapse