FR2430837A1 - Continuous post-expansion and curing of extruded thermoplastic tubing - between traversing split mould tools, to produce smooth or convoluted hose without requiring complicated extruder controls - Google Patents

Continuous post-expansion and curing of extruded thermoplastic tubing - between traversing split mould tools, to produce smooth or convoluted hose without requiring complicated extruder controls

Info

Publication number
FR2430837A1
FR2430837A1 FR7821005A FR7821005A FR2430837A1 FR 2430837 A1 FR2430837 A1 FR 2430837A1 FR 7821005 A FR7821005 A FR 7821005A FR 7821005 A FR7821005 A FR 7821005A FR 2430837 A1 FR2430837 A1 FR 2430837A1
Authority
FR
France
Prior art keywords
curing
temp
traversing
expansion
split mould
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
FR7821005A
Other languages
French (fr)
Other versions
FR2430837B1 (en
Inventor
Pierre Clement
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.)
SUTE
Original Assignee
SUTE
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 SUTE filed Critical SUTE
Priority to FR7821005A priority Critical patent/FR2430837A1/en
Publication of FR2430837A1 publication Critical patent/FR2430837A1/en
Application granted granted Critical
Publication of FR2430837B1 publication Critical patent/FR2430837B1/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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/06—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/9145—Endless cooling belts
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C2035/0211—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould resistance heating
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised

Abstract

Crosslinked thermoplastics pipe is made by extruding a tubular profile from a mixt. contg. chemical blowing agents at a temp. below the activation temp. of the blowing agents and post curing the profile by immediate passage between a twin series of travelling split mould shells passing through zones in which the temp. is first raised sufficiently to promote crosslinking and then cooled sufficiently to stabilise the profile form during subsequent hauloff. Sepn. of the extrusion process from the curing process greatly simplifies control of the extrusion process, since residence times and melt temp. are much less critical than for systems where the material can get overcured within the extruder or where physical stability must be maintained by the material emerging from the extruder. By changing the mould shells, a variety of hose sizes and shapes may be produced from the same extrusion system.
FR7821005A 1978-07-13 1978-07-13 Continuous post-expansion and curing of extruded thermoplastic tubing - between traversing split mould tools, to produce smooth or convoluted hose without requiring complicated extruder controls Granted FR2430837A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7821005A FR2430837A1 (en) 1978-07-13 1978-07-13 Continuous post-expansion and curing of extruded thermoplastic tubing - between traversing split mould tools, to produce smooth or convoluted hose without requiring complicated extruder controls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7821005A FR2430837A1 (en) 1978-07-13 1978-07-13 Continuous post-expansion and curing of extruded thermoplastic tubing - between traversing split mould tools, to produce smooth or convoluted hose without requiring complicated extruder controls

Publications (2)

Publication Number Publication Date
FR2430837A1 true FR2430837A1 (en) 1980-02-08
FR2430837B1 FR2430837B1 (en) 1980-12-05

Family

ID=9210744

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7821005A Granted FR2430837A1 (en) 1978-07-13 1978-07-13 Continuous post-expansion and curing of extruded thermoplastic tubing - between traversing split mould tools, to produce smooth or convoluted hose without requiring complicated extruder controls

Country Status (1)

Country Link
FR (1) FR2430837A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087854A1 (en) * 1982-01-21 1983-09-07 Manfred Arno Alfred Lupke Chainless mold drive for a corrugator or the like
WO2007063260A2 (en) * 2005-11-30 2007-06-07 Roctool Method, device and system for producing a corrugated pipe or tube
DE102015115828A1 (en) * 2015-09-18 2017-03-23 Unicor Gmbh Device for producing plastic pipes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760228A (en) * 1952-02-19 1956-08-28 Telecommunications Sa Manufacture of tubular insulators for electric conductors
CH378032A (en) * 1959-03-13 1964-05-31 Jansen & Co Ag Process for the production of pipes made of thermoplastic material with a bulged wall
US3872893A (en) * 1972-05-01 1975-03-25 Fred T Roberts & Company Self-reinforced plastic hose and method for molding same
FR2248139A1 (en) * 1973-10-18 1975-05-16 Lundbergs Fab Ab N

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760228A (en) * 1952-02-19 1956-08-28 Telecommunications Sa Manufacture of tubular insulators for electric conductors
CH378032A (en) * 1959-03-13 1964-05-31 Jansen & Co Ag Process for the production of pipes made of thermoplastic material with a bulged wall
US3872893A (en) * 1972-05-01 1975-03-25 Fred T Roberts & Company Self-reinforced plastic hose and method for molding same
FR2248139A1 (en) * 1973-10-18 1975-05-16 Lundbergs Fab Ab N

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0087854A1 (en) * 1982-01-21 1983-09-07 Manfred Arno Alfred Lupke Chainless mold drive for a corrugator or the like
WO2007063260A2 (en) * 2005-11-30 2007-06-07 Roctool Method, device and system for producing a corrugated pipe or tube
WO2007063260A3 (en) * 2005-11-30 2007-07-19 Roctool Method, device and system for producing a corrugated pipe or tube
DE102015115828A1 (en) * 2015-09-18 2017-03-23 Unicor Gmbh Device for producing plastic pipes
US20190248056A1 (en) * 2015-09-18 2019-08-15 Unicor Gmbh Device for producing plastic pipes
US11020891B2 (en) 2015-09-18 2021-06-01 Unicor Gmbh Device for producing plastic pipes

Also Published As

Publication number Publication date
FR2430837B1 (en) 1980-12-05

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