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GB1211860A - A process for the production of pipe - Google Patents

A process for the production of pipe

Info

Publication number
GB1211860A
GB1211860A GB45026/67A GB4502667A GB1211860A GB 1211860 A GB1211860 A GB 1211860A GB 45026/67 A GB45026/67 A GB 45026/67A GB 4502667 A GB4502667 A GB 4502667A GB 1211860 A GB1211860 A GB 1211860A
Authority
GB
United Kingdom
Prior art keywords
pipe
polymers
agents
copolymers
extruding
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
GB45026/67A
Inventor
Samuel George Sterling
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB45026/67A priority Critical patent/GB1211860A/en
Priority to NL6814190A priority patent/NL6814190A/xx
Publication of GB1211860A publication Critical patent/GB1211860A/en
Expired 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/507—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through an annular 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
    • 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
    • B29C48/16—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
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
    • 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
    • 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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

1,211,860. Extruding composite pipes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 Sept., 1968 [3 Oct., 1967], No. 45026/67. Heading B5A. [Also in Division F2] A continuous process for the production of a laminar pipe having a foamed core and inner and outer surface layers comprises co-axially extruding two pipes of thermoplastic material and extruding a foaming synthetic resin into the cavity between the said two pipes. The laminar pipe may be prepared by dividing a stream of molten thermoplastic material into two annular concentric paths, cooling the material in these paths and extruding a foaming material between the formed pipes which emerge from the extruder, the resulting pipe assembly being drawn through a forming die by moving surfaces which grip the exterior surface of the pipe whilst the foaming material foams and sets. The foamed core acts to strengthen the pipe and acts as a heat insulant. Each pipe layer may be of the same material, the inner and outer layers of the same material and the foam core of a different material, or each of a different material. Suitable materials may be polymers of α-olefines such as polyethylene, polypropylene, polybutene and poly-4-methyl pentene-1 and copolymers of two or more α- olefines such as ethylene, propylene, butene and 4-methypentene-1; polymers and copolymers of vinyl chloride optionally containing a plasticizer; polymers and co-polymers of styrene, polymers and copolymers of methyl methacrylate and acrylonitrile, butadiene, styrene copolymers. The thermoplastic material, especially that of the outer layer, may include a suitable filler such as asbestos fibres, glass fibres, glass plates or mica plates. The blowing agents for the foaming material may comprise liquid agents such as pentane and the halo- and polyhalo-hydrocarbons, e.g. methyl chloride, which may be incorporated by soaking the thermoplastic material in the liquid agent. Alternatively the blowing agent may be injected into the barrel of the extruder. The blowing agent may be a powdered, solid agent dry-blended with the thermoplastic. Suitable solid agents are the nitrogen gas liberating agents, such as azo and hydrazo compounds, and the carbon dioxide gas liberating agents, such as carbonates or bicarbonates.
GB45026/67A 1967-10-03 1967-10-03 A process for the production of pipe Expired GB1211860A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB45026/67A GB1211860A (en) 1967-10-03 1967-10-03 A process for the production of pipe
NL6814190A NL6814190A (en) 1967-10-03 1968-10-03

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB45026/67A GB1211860A (en) 1967-10-03 1967-10-03 A process for the production of pipe
NL6814190A NL6814190A (en) 1967-10-03 1968-10-03

Publications (1)

Publication Number Publication Date
GB1211860A true GB1211860A (en) 1970-11-11

Family

ID=33100047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45026/67A Expired GB1211860A (en) 1967-10-03 1967-10-03 A process for the production of pipe

Country Status (2)

Country Link
GB (1) GB1211860A (en)
NL (1) NL6814190A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385968A1 (en) * 1977-04-01 1978-10-27 Wavin Bv PLASTIC PIPE, ESPECIALLY THERMOPLASTIC MATERIAL
DE2821333A1 (en) * 1977-05-16 1978-11-30 Borg Warner TUBE MADE OF THERMOPLASTIC MATERIAL AND THE METHOD OF ITS MANUFACTURING
EP0017501A1 (en) * 1979-04-06 1980-10-15 Durapipe Limited A method of and apparatus for extruding plastics products
EP0019564A1 (en) * 1979-05-10 1980-11-26 Société Generale de Canalisations SOGECAN Method and apparatus for the extrusion of plastic tubings with composite walls
WO1984003066A1 (en) * 1983-02-14 1984-08-16 Neste Oy Procedure for manufacturing a thermally insulating sheath or duct for a pipe or pipes
GB2184512A (en) * 1985-12-18 1987-06-24 Eilentropp Hew Kabel Fire resistant covering
FR2633554A1 (en) * 1988-07-04 1990-01-05 Solvay PROCESS FOR REALIZING, BY COEXTRUSION, AN ALLEGE PIPE AND A PIPE FOR CARRYING IT OUT
GB2271160A (en) * 1992-10-01 1994-04-06 Yong Goo Shin High impact strength pipe
EP0911185A3 (en) * 1997-10-22 2000-02-09 Continental Aktiengesellschaft Motor-vehicle wheel with a tyre mounted on a rim and a sound-absorbing device , and method of manufacturing such a device
EP1419871A1 (en) * 1995-12-12 2004-05-19 Uponor Innovation Ab Method and apparatus for producing multilayer plastic pipe
EA007970B1 (en) * 2006-03-15 2007-02-27 Закрытое Акционерное Общество "Завод Полимерных Труб" Method for manufacturing pre-insulated pipes

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385968A1 (en) * 1977-04-01 1978-10-27 Wavin Bv PLASTIC PIPE, ESPECIALLY THERMOPLASTIC MATERIAL
DE2821333A1 (en) * 1977-05-16 1978-11-30 Borg Warner TUBE MADE OF THERMOPLASTIC MATERIAL AND THE METHOD OF ITS MANUFACTURING
FR2391058A1 (en) * 1977-05-16 1978-12-15 Borg Warner PROCESS FOR MANUFACTURING PIPES FROM RIGID AND LIGHTWEIGHT THERMOPLASTIC MATERIAL
EP0017501A1 (en) * 1979-04-06 1980-10-15 Durapipe Limited A method of and apparatus for extruding plastics products
EP0019564A1 (en) * 1979-05-10 1980-11-26 Société Generale de Canalisations SOGECAN Method and apparatus for the extrusion of plastic tubings with composite walls
FR2455972A1 (en) * 1979-05-10 1980-12-05 Sogecan Ste Gle Canalisations PROCESS AND APPARATUS FOR THE EXTRUSION OF PLASTIC TUBES WITH COMPOSITE WALLS
WO1984003066A1 (en) * 1983-02-14 1984-08-16 Neste Oy Procedure for manufacturing a thermally insulating sheath or duct for a pipe or pipes
GB2146286A (en) * 1983-02-14 1985-04-17 Neste Oy Procedure for manufacturing a thermally insulating sheath or duct for a pipe or pipes
GB2184512A (en) * 1985-12-18 1987-06-24 Eilentropp Hew Kabel Fire resistant covering
GB2184512B (en) * 1985-12-18 1990-02-07 Eilentropp Hew Kabel Protective casing for rope-shaped material
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.
DE3921853C2 (en) * 1988-07-04 1999-04-08 Solvay Process for producing a diluted tube by coextrusion and tube drawing mold for carrying it out
GB2271160A (en) * 1992-10-01 1994-04-06 Yong Goo Shin High impact strength pipe
GB2271160B (en) * 1992-10-01 1996-06-12 Yong Goo Shin High impact strength pipe
EP1419871A1 (en) * 1995-12-12 2004-05-19 Uponor Innovation Ab Method and apparatus for producing multilayer plastic pipe
EP0911185A3 (en) * 1997-10-22 2000-02-09 Continental Aktiengesellschaft Motor-vehicle wheel with a tyre mounted on a rim and a sound-absorbing device , and method of manufacturing such a device
US6244314B1 (en) * 1997-10-22 2001-06-12 Continental Aktiengesellschaft Motor vehicle wheel with a tire placed on a rim and sound-absorbent insert as well as method of producing a sound-absorbent insert
EA007970B1 (en) * 2006-03-15 2007-02-27 Закрытое Акционерное Общество "Завод Полимерных Труб" Method for manufacturing pre-insulated pipes

Also Published As

Publication number Publication date
NL6814190A (en) 1968-12-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees