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GB1547113A - Method of producing a thermally and acoustically insulated pipe - Google Patents

Method of producing a thermally and acoustically insulated pipe

Info

Publication number
GB1547113A
GB1547113A GB41642/77A GB4164277A GB1547113A GB 1547113 A GB1547113 A GB 1547113A GB 41642/77 A GB41642/77 A GB 41642/77A GB 4164277 A GB4164277 A GB 4164277A GB 1547113 A GB1547113 A GB 1547113A
Authority
GB
United Kingdom
Prior art keywords
pipe
foam composition
forming
outer pipe
insulating layer
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.)
Expired
Application number
GB41642/77A
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.)
KM Kabelmetal AG
Original Assignee
KM Kabelmetal AG
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 KM Kabelmetal AG filed Critical KM Kabelmetal AG
Publication of GB1547113A publication Critical patent/GB1547113A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • B29C48/15—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Thermal Insulation (AREA)
  • Molding Of Porous Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Communication Cables (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Using an extruder die (1), in the process an outer pipe (2) made of thermoplastic is extruded coaxially to an inner pipe (6) fed continuously over a guide pipe (5). Then, using a mixing device (9), a reactive foam composition (11) forming the heat-insulating layer is introduced by means of a mixing device (9) into the annular space between the inner pipe (6) and the outer pipe (2). This foam composition (11) is sprayed onto a conveyor belt (7) running off from a supply reel (8). The foam composition (11) is formulated such that it does not fill the annular space until the outer sheath (2) has sufficient strength. The extruded outer pipe (2) is calibrated in a subatmospheric pressure chamber (3) partly filled with water and intensively cooled in a second chamber (4). The film used hitherto for forming a mould cavity for the insulating layer and the forming device for this film are dispensed with. <IMAGE>
GB41642/77A 1977-01-07 1977-10-06 Method of producing a thermally and acoustically insulated pipe Expired GB1547113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2700478A DE2700478C2 (en) 1977-01-07 1977-01-07 Process for the production of a heat and sound insulated pipe

Publications (1)

Publication Number Publication Date
GB1547113A true GB1547113A (en) 1979-06-06

Family

ID=5998249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41642/77A Expired GB1547113A (en) 1977-01-07 1977-10-06 Method of producing a thermally and acoustically insulated pipe

Country Status (13)

Country Link
JP (1) JPS5385556A (en)
BE (1) BE862693A (en)
CH (1) CH622738A5 (en)
DE (1) DE2700478C2 (en)
DK (1) DK151856C (en)
ES (1) ES463034A1 (en)
FI (1) FI772696A (en)
FR (1) FR2376737A1 (en)
GB (1) GB1547113A (en)
IT (1) IT1090932B (en)
NL (1) NL188513C (en)
NO (1) NO780051L (en)
SE (1) SE431178B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120747A (en) * 1982-05-20 1983-12-07 Hepworth Plastics Ltd Pipes for pipelines
WO2010085906A1 (en) * 2009-01-29 2010-08-05 Brugg Rohr Ag Holding Method for producing a thermally insulated conduit pipe
US8397765B2 (en) 2008-07-25 2013-03-19 Shawcor Ltd. High temperature resistant insulation for pipe
US8485229B2 (en) 2008-12-22 2013-07-16 Shawcor Ltd. Wrappable styrenic pipe insulations
US8714206B2 (en) 2007-12-21 2014-05-06 Shawcor Ltd. Styrenic insulation for pipe
CN111347609A (en) * 2020-03-12 2020-06-30 李文丽 Foaming insulating tube processingequipment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3208724A1 (en) * 1982-03-11 1983-09-22 kabelmetal electro GmbH, 3000 Hannover Process for producing a thermally insulated conduit pipe
DE202009007391U1 (en) 2009-05-23 2009-08-13 Kraussmaffei Technologies Gmbh Device for applying a plastic material to the surface of a tubular body

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI19973A (en) * 1941-05-14 1944-03-10 Tvärarm för hässjestörar
DE1504632A1 (en) * 1951-01-28 1969-10-09 Kabel Metallwerke Ghh Method and device for the production of a seamless cover from flexible heat-insulating foam on a flexible metal tube in a continuous horizontal operation
DE1704748C3 (en) * 1951-01-28 1974-11-28 Kabel Metallwerke Ghh Process for the continuous production of thermally insulated pipes
US2910730A (en) * 1956-07-05 1959-11-03 Pittsburgh Plate Glass Co Filling elongated cavities with polyurethane foams
DK111935B (en) * 1963-06-14 1968-10-21 E Andersen Method for heat insulating pipes by pouring a heat insulating foam between the pipe and a protective pipe surrounding the pipe.
DE1959464A1 (en) * 1969-11-27 1971-06-03 Bayer Ag Method and device for the continuous extrusion of endless profiles with a jacket made of thermoplastic material and a foam core and profiles produced according to this
DE2224314A1 (en) * 1972-05-18 1973-11-29 Kabel Metallwerke Ghh Acoustic insulated ventilation ducting - with foamed plastic layer between metal outer and plastic liner tubes
GB1482661A (en) * 1974-07-25 1977-08-10 Rakennusmuovi Oy Method of manufacturing an insulated conduit
SE389054B (en) * 1975-11-18 1976-10-25 Lundbergs Fab Ab N NOZZLE FOR SUPPLY OF TWO COMPONENTS IN THE MANUFACTURE OF A CELL PLACE BETWEEN A RUBBER AND AN SURROUNDING SHAPE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120747A (en) * 1982-05-20 1983-12-07 Hepworth Plastics Ltd Pipes for pipelines
US8714206B2 (en) 2007-12-21 2014-05-06 Shawcor Ltd. Styrenic insulation for pipe
US8397765B2 (en) 2008-07-25 2013-03-19 Shawcor Ltd. High temperature resistant insulation for pipe
US8485229B2 (en) 2008-12-22 2013-07-16 Shawcor Ltd. Wrappable styrenic pipe insulations
WO2010085906A1 (en) * 2009-01-29 2010-08-05 Brugg Rohr Ag Holding Method for producing a thermally insulated conduit pipe
CN111347609A (en) * 2020-03-12 2020-06-30 李文丽 Foaming insulating tube processingequipment

Also Published As

Publication number Publication date
FR2376737B1 (en) 1983-02-25
DE2700478C2 (en) 1986-07-10
CH622738A5 (en) 1981-04-30
BE862693A (en) 1978-07-06
NL7712145A (en) 1978-07-11
FR2376737A1 (en) 1978-08-04
SE431178B (en) 1984-01-23
DK151856C (en) 1988-06-06
FI772696A (en) 1978-07-08
JPS5385556A (en) 1978-07-28
DK401977A (en) 1978-07-08
NL188513B (en) 1992-02-17
DK151856B (en) 1988-01-11
SE7714944L (en) 1978-07-08
ES463034A1 (en) 1978-07-16
NO780051L (en) 1978-07-10
IT1090932B (en) 1985-06-26
DE2700478A1 (en) 1978-07-20
NL188513C (en) 1992-07-16
JPS6218340B2 (en) 1987-04-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941006