FR2427897A1 - Pipe extrusion die allowing sudden wall thickness variation - by adjustment of the melt volume of a die receiving melt at a constant rate - Google Patents

Pipe extrusion die allowing sudden wall thickness variation - by adjustment of the melt volume of a die receiving melt at a constant rate

Info

Publication number
FR2427897A1
FR2427897A1 FR7817377A FR7817377A FR2427897A1 FR 2427897 A1 FR2427897 A1 FR 2427897A1 FR 7817377 A FR7817377 A FR 7817377A FR 7817377 A FR7817377 A FR 7817377A FR 2427897 A1 FR2427897 A1 FR 2427897A1
Authority
FR
France
Prior art keywords
die
wall thickness
melt
adjustment
pipe extrusion
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
FR7817377A
Other languages
French (fr)
Other versions
FR2427897B1 (en
Inventor
Andre Emile Rene Lagabe
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.)
Pont a Mousson SA
Original Assignee
Pont a Mousson SA
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 Pont a Mousson SA filed Critical Pont a Mousson SA
Priority to FR7817377A priority Critical patent/FR2427897A1/en
Publication of FR2427897A1 publication Critical patent/FR2427897A1/en
Application granted granted Critical
Publication of FR2427897B1 publication Critical patent/FR2427897B1/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
    • 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
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
    • B29C48/2528—Drive or actuation means for non-plasticising purposes, e.g. dosing unit
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/003—Tubular articles having irregular or rough surfaces

Abstract

A pipe extrusion die is fitted with a die mandrel or barrel having a reciprocating sleeve with a stepped surface to allow variation of the die volume just upstream of an outlet die of constant cross-section. Used for mfr. of pipe profiles requiring periodic variations of wall thickness, e.g. to provide extra material at intervals suitable for socket formation without loss of wall strength. The melt pump, i.e. extruder, may be run at constant speed. Reduction of the die volume causes increased flow leading to greater wall thickness, and vice versa. The sleeve motion can be controlled more abruptly and precisely than variations in the main extruder screw motions.
FR7817377A 1978-06-09 1978-06-09 Pipe extrusion die allowing sudden wall thickness variation - by adjustment of the melt volume of a die receiving melt at a constant rate Granted FR2427897A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7817377A FR2427897A1 (en) 1978-06-09 1978-06-09 Pipe extrusion die allowing sudden wall thickness variation - by adjustment of the melt volume of a die receiving melt at a constant rate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817377A FR2427897A1 (en) 1978-06-09 1978-06-09 Pipe extrusion die allowing sudden wall thickness variation - by adjustment of the melt volume of a die receiving melt at a constant rate

Publications (2)

Publication Number Publication Date
FR2427897A1 true FR2427897A1 (en) 1980-01-04
FR2427897B1 FR2427897B1 (en) 1981-04-17

Family

ID=9209326

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7817377A Granted FR2427897A1 (en) 1978-06-09 1978-06-09 Pipe extrusion die allowing sudden wall thickness variation - by adjustment of the melt volume of a die receiving melt at a constant rate

Country Status (1)

Country Link
FR (1) FR2427897A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105142A1 (en) * 1982-09-08 1984-04-11 BASF Aktiengesellschaft Device for extruding thermoplastic resins
FR2633554A1 (en) * 1988-07-04 1990-01-05 Solvay PROCESS FOR REALIZING, BY COEXTRUSION, AN ALLEGE PIPE AND A PIPE FOR CARRYING IT OUT
WO1998056565A1 (en) * 1997-06-12 1998-12-17 Crompton & Knowles Corporation Electric drive for blow molding head
EP2538091A1 (en) * 2010-02-16 2012-12-26 Alexandr Nikolayevich Kurasov Method for changing the resistance of a liquid and vessel for a liquid
EP2546044A1 (en) * 2011-07-13 2013-01-16 Wavin B.V. Pipe extrusion device and method for extruding plastic pipes

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU30832A1 (en) * 1900-01-01
US3221371A (en) * 1963-03-25 1965-12-07 Stevens Alexander Michael Extruding dies
US3245115A (en) * 1963-11-29 1966-04-12 American Can Co Thermoplastic accumulator
US3280847A (en) * 1961-09-19 1966-10-25 Dow Chemical Co Extrusion die
US3420926A (en) * 1962-11-13 1969-01-07 Monsanto Co Method for selectively controlling the extrusion of plastic material
FR2119465A5 (en) * 1970-12-22 1972-08-04 Sig Schweiz Industrieges
US3706827A (en) * 1968-03-28 1972-12-19 Ici Ltd Method for flow rate control

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU30832A1 (en) * 1900-01-01
US3280847A (en) * 1961-09-19 1966-10-25 Dow Chemical Co Extrusion die
US3420926A (en) * 1962-11-13 1969-01-07 Monsanto Co Method for selectively controlling the extrusion of plastic material
US3221371A (en) * 1963-03-25 1965-12-07 Stevens Alexander Michael Extruding dies
US3245115A (en) * 1963-11-29 1966-04-12 American Can Co Thermoplastic accumulator
US3706827A (en) * 1968-03-28 1972-12-19 Ici Ltd Method for flow rate control
FR2119465A5 (en) * 1970-12-22 1972-08-04 Sig Schweiz Industrieges

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105142A1 (en) * 1982-09-08 1984-04-11 BASF Aktiengesellschaft Device for extruding thermoplastic resins
FR2633554A1 (en) * 1988-07-04 1990-01-05 Solvay PROCESS FOR REALIZING, BY COEXTRUSION, AN ALLEGE PIPE AND A PIPE FOR CARRYING IT OUT
BE1006667A3 (en) * 1988-07-04 1994-11-16 Solvay Method for producing by coextrusion, a lightweight and pipe die for implementation.
WO1998056565A1 (en) * 1997-06-12 1998-12-17 Crompton & Knowles Corporation Electric drive for blow molding head
EP2538091A1 (en) * 2010-02-16 2012-12-26 Alexandr Nikolayevich Kurasov Method for changing the resistance of a liquid and vessel for a liquid
EP2538091A4 (en) * 2010-02-16 2013-12-11 Alexandr Nikolayevich Kurasov Method for changing the resistance of a liquid and vessel for a liquid
EP2546044A1 (en) * 2011-07-13 2013-01-16 Wavin B.V. Pipe extrusion device and method for extruding plastic pipes

Also Published As

Publication number Publication date
FR2427897B1 (en) 1981-04-17

Similar Documents

Publication Publication Date Title
GB1217729A (en) Method of and plant for continuously providing a metal tube with a heat and sound insulating sheath
IL110408A (en) Drip irrigation hose with pressure regulation and method for its manufacture
GB1438514A (en) Extrusion
ES431416A1 (en) Device for producing externally ribbed pipes of plastic
MX9701612A (en) Die for extruding a fluid stream.
GB1515890A (en) Apparatus for and process of extruding plastics material
FR2427897A1 (en) Pipe extrusion die allowing sudden wall thickness variation - by adjustment of the melt volume of a die receiving melt at a constant rate
ATE97056T1 (en) DEVICE FOR THE MANUFACTURE OF TUBES WITH ANNULAR FINS.
GB1504278A (en) Extruders
ES8205584A1 (en) Method and extrusion die for coating a fibrous casing.
DE3380623D1 (en) Screw extruder for plastic material
PL320116A1 (en) Method of making plastic pipes, extrusion die therefor and plastic pipe obtained thereby
CN111660500A (en) Device capable of adjusting inner wall thickness of double-wall corrugated pipe
GB1469646A (en) Method for the production of pipe lengths of varying cross- section of thermoplastics material and apparatus for carrying out the method
DE3272185D1 (en) Method of extruding a plastics hollow profile
FR2359696A1 (en) Mutual reciprocation of pipe extrusion and draw=off units - to produce thick wall socket zones at optimum constant extrusion and draw=off rates
JPS5433565A (en) Process for controlling rotational speed of screw
FR2393667A2 (en) Mutual reciprocation of pipe extrusion and draw=off units - to produce thick wall socket zones at optimum constant extrusion and draw=off rates
CN102211392A (en) Plastic extruding machine with curve-shaped machine neck flow channel
FR2295827A1 (en) Flexible thermoplastic tube mfg process - uses segments in extruder moulding zone positioned at will from extruding axis
JPS57181832A (en) Manufacturing method of painted tube
GB1298672A (en) Improved mixing device
JPS5780024A (en) Manufacture and apparatus of ring laminate
JPS5542869A (en) Extrusion molding of rubber or plastic
GB823066A (en) Extrusion apparatus and process

Legal Events

Date Code Title Description
ST Notification of lapse