GB1480324A - Method of continuously producing thermally insulated piping and piping produced thereby - Google Patents

Method of continuously producing thermally insulated piping and piping produced thereby

Info

Publication number
GB1480324A
GB1480324A GB22078/76A GB2207876A GB1480324A GB 1480324 A GB1480324 A GB 1480324A GB 22078/76 A GB22078/76 A GB 22078/76A GB 2207876 A GB2207876 A GB 2207876A GB 1480324 A GB1480324 A GB 1480324A
Authority
GB
United Kingdom
Prior art keywords
cross
piping
heated
thermally insulated
continuously producing
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
GB22078/76A
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 GB1480324A publication Critical patent/GB1480324A/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
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
    • 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
    • B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • 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
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins
    • 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
    • B29K2301/00—Use of unspecified macromolecular compounds as reinforcement
    • B29K2301/10—Thermosetting resins

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

1480324 Foam coating pipes KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE AG 27 May 1976 [7 June 1975] 22078/76 Addition to 1458490 Heading B2E [Also in Division B5] A method of continuously producing thermally insulated piping comprises applying a coating 10 of predetermined thickness of an expandable cross-linkable synthetic resin material onto a metal tube or a cladding carried thereby, and then expanding the material, wherein the material undergoes crosslinking which is initiated before the expansion, wherein the material is progressively heated in an extruder from the inlet to the outlet thereof, and immediately before leaving the extruder has a temperature above the reaction temperature of a cross-linking agent and an expanding agent of the material. Preferably a screw 3 feeds the material to a nozzle 6, the material being heated by shearing caused by rotating a hollow pin 5 housing the pipe 9. The composition may be fed as a mixture of particulate components, the resin being polyethylene, the cross-linking agent being dicumyl peroxide, and the blowing agent being azodicarbonamide. The coated pipe may be passed through a heated die.
GB22078/76A 1975-06-07 1976-05-27 Method of continuously producing thermally insulated piping and piping produced thereby Expired GB1480324A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2525561A DE2525561C2 (en) 1975-06-07 1975-06-07 Process for the continuous production of heat-insulated line pipes

Publications (1)

Publication Number Publication Date
GB1480324A true GB1480324A (en) 1977-07-20

Family

ID=5948600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22078/76A Expired GB1480324A (en) 1975-06-07 1976-05-27 Method of continuously producing thermally insulated piping and piping produced thereby

Country Status (11)

Country Link
JP (1) JPS51149376A (en)
AT (1) AT357749B (en)
BE (1) BE842625R (en)
CH (1) CH589252A5 (en)
DE (1) DE2525561C2 (en)
DK (1) DK147372C (en)
FR (1) FR2313198A2 (en)
GB (1) GB1480324A (en)
IT (1) IT1057271B (en)
NL (1) NL7606018A (en)
SE (1) SE420690B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289716A (en) * 1978-02-16 1981-09-15 Kabel- Und Metallwerke Gutehoffnungshutte A.G. Thermally insulating tubes
GB2250934A (en) * 1990-11-28 1992-06-24 Textilver Sa Foam lined tubes
US5360050A (en) * 1991-03-29 1994-11-01 Asahi Tec Corporation Method of preparing disappearing model
EP3216579A1 (en) * 2016-03-11 2017-09-13 Halcor S.A. Crosslinked tubular foam
WO2018194835A1 (en) * 2017-04-18 2018-10-25 R & D Plastics Of Hickory, Ltd. Ring dam and method for manufacturing a ring dam

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2628883A1 (en) * 1976-06-26 1978-01-05 Kabel Metallwerke Ghh PROCESS FOR MANUFACTURING A CASING FROM FOAMED PLASTIC
NL8005255A (en) * 1980-09-19 1982-04-16 Wavin Bv PLASTIC TUBE PART PROVIDED WITH A PLASTIC FOAM INSULATION LAYER.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1504355A1 (en) * 1962-10-15 1969-09-25 Hercules Inc Molded articles made from polypropylene foams with a cellular structure and process for producing the same
DE1629367A1 (en) * 1966-08-11 1971-02-04 Dynamit Nobel Ag Process for the continuous production of crosslinked polyolefin foams
DE1629455A1 (en) * 1966-09-06 1971-01-28 Kabel Metallwerke Ghh Process for vulcanizing or crosslinking thermoplastic insulating material layers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289716A (en) * 1978-02-16 1981-09-15 Kabel- Und Metallwerke Gutehoffnungshutte A.G. Thermally insulating tubes
GB2250934A (en) * 1990-11-28 1992-06-24 Textilver Sa Foam lined tubes
US5360050A (en) * 1991-03-29 1994-11-01 Asahi Tec Corporation Method of preparing disappearing model
EP3216579A1 (en) * 2016-03-11 2017-09-13 Halcor S.A. Crosslinked tubular foam
WO2017153584A1 (en) * 2016-03-11 2017-09-14 Halcor S.A. Crosslinked tubular foam
IL259559A (en) * 2016-03-11 2018-07-31 Halcor S A Crosslinked tubular foam
US10661524B2 (en) 2016-03-11 2020-05-26 Halcor S.A. Crosslinked tubular foam
WO2018194835A1 (en) * 2017-04-18 2018-10-25 R & D Plastics Of Hickory, Ltd. Ring dam and method for manufacturing a ring dam

Also Published As

Publication number Publication date
DK147372B (en) 1984-07-09
FR2313198B2 (en) 1980-04-30
DK141576A (en) 1976-12-08
SE7606344L (en) 1976-12-08
IT1057271B (en) 1982-03-10
DE2525561A1 (en) 1976-12-23
BE842625R (en) 1976-12-06
NL7606018A (en) 1976-12-09
DE2525561C2 (en) 1985-11-07
ATA186876A (en) 1979-12-15
DK147372C (en) 1985-01-07
CH589252A5 (en) 1977-06-30
SE420690B (en) 1981-10-26
JPS51149376A (en) 1976-12-22
AT357749B (en) 1980-07-25
FR2313198A2 (en) 1976-12-31

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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