GB1414059A - Method of coating an object having an elongated circular suface particularly but not exclusively a pipe - Google Patents

Method of coating an object having an elongated circular suface particularly but not exclusively a pipe

Info

Publication number
GB1414059A
GB1414059A GB3437873A GB3437873A GB1414059A GB 1414059 A GB1414059 A GB 1414059A GB 3437873 A GB3437873 A GB 3437873A GB 3437873 A GB3437873 A GB 3437873A GB 1414059 A GB1414059 A GB 1414059A
Authority
GB
United Kingdom
Prior art keywords
pipe
adhesive
resin
sheet
coating
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
GB3437873A
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.)
Hielema-Emmons Pipe Coating Ltd
Original Assignee
Hielema-Emmons Pipe Coating 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
Priority claimed from US00276832A external-priority patent/US3823045A/en
Priority to US380189A priority Critical patent/US3919229A/en
Application filed by Hielema-Emmons Pipe Coating Ltd filed Critical Hielema-Emmons Pipe Coating Ltd
Publication of GB1414059A publication Critical patent/GB1414059A/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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B29C63/04—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like
    • B29C63/08—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding helically
    • B29C63/10—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding helically around tubular articles
    • B29C63/105—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding helically around tubular articles continuously
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
    • F16L58/109—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being an extruded layer

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

1414059 Forming protective coatings by winding HIELEMA EMMONS PIPE COATING Ltd 19 July 1973 [31 July 1972] 34378/73 Heading B8G [Also in Division F2] A method of forming a protective coating consisting of a thermoplastic resin and a resin compatible adhesive on an object having an elongated circular surface, e.g. a steel pipe 10, includes the steps of rotating the pipe 10 about its longitudinal axis whilst simultaneously advancing the pipe 10 longitudinally, extruding a sheet 22 of the adhesive on to the surface 12 of the pipe 10, thus forming helical windings 24 of the -adhesive on the pipe 10 and extruding a sheet 34 of the resin on to the adhesive covered pipe in sufficiently close proximity of time to the first extruding step to assure bonding of the helical windings 36 of the resin to the adhesive. The rates of rotation and longitudinal advancement of the pipe 10 are chosen such that (a) the distance advanced by the pipe 10 per revolution is no greater than one-half the width of the narrowest sheet, thus ensuring that at least two plies of each sheet is wound on to the pipe and (b) the speed of the surface of the pipe 10 due to its rotation is at least equal to and not more than 5% faster than the speed at which the resin sheet 34 is extruded. The extruders 20 and 32 are also positioned such that the lengths of the sheets 22, 34 before they contact the pipe are less than their widths. The pipe 10 is cleaned at a cleaning station 14 before the coatings are applied, the pipe 10 being at the temperature of the ambient air when the adhesive layer is applied. After coating the pipe 10 passes a cooling station 40. As described, the adhesive consists of a synthetic rubber composition and forms a two-ply layer 26 (Fig. 3), on the pipe 10 and the resin may be polyethylene, polyvinyl chloride or acrylonitrile-butadiene-styrene copolymer and forms a three-ply layer 38.
GB3437873A 1972-07-31 1973-07-19 Method of coating an object having an elongated circular suface particularly but not exclusively a pipe Expired GB1414059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US380189A US3919229A (en) 1973-07-19 1973-07-18 Pyrimidine derivatives and process for preparing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00276832A US3823045A (en) 1971-04-01 1972-07-31 Pipe coating method

Publications (1)

Publication Number Publication Date
GB1414059A true GB1414059A (en) 1975-11-12

Family

ID=23058239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3437873A Expired GB1414059A (en) 1972-07-31 1973-07-19 Method of coating an object having an elongated circular suface particularly but not exclusively a pipe

Country Status (5)

Country Link
CA (1) CA1023217A (en)
DE (1) DE2338431C2 (en)
FR (1) FR2195199A5 (en)
GB (1) GB1414059A (en)
NL (1) NL7310554A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161721A (en) * 1984-07-20 1986-01-22 Nippon Steel Corp Precoated corrosion-resistant steel pipe piles for marine use, and structure thereof
EP0246043A1 (en) * 1986-05-13 1987-11-19 W.R. Grace Limited Method of applying a wrapping
EP3443036B1 (en) * 2016-04-14 2019-10-09 DENSO-Holding GmbH & Co. Adhesion promoting composition for an anti-corrosion product

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4279284A (en) 1979-11-16 1981-07-21 The Goodyear Tire & Rubber Company Pneumatic rubber tire containing enhanced inner liner or inner tube
JPS5695367A (en) * 1979-12-28 1981-08-01 Toyo Kogei Kogyo Kk Formation of plastic dressed plate around circumferential surface
GB8426114D0 (en) * 1984-10-16 1984-11-21 Ramco Oil Services Plant for coating pipe &c
DE3828427A1 (en) * 1988-08-22 1990-03-08 Roehrenwerk Gebr Fuchs Gmbh Process and apparatus for sheathing steel pipes coated with a thermoplastic material with an additional protective layer of a hydraulic composition such as cement mortar

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161721A (en) * 1984-07-20 1986-01-22 Nippon Steel Corp Precoated corrosion-resistant steel pipe piles for marine use, and structure thereof
EP0246043A1 (en) * 1986-05-13 1987-11-19 W.R. Grace Limited Method of applying a wrapping
EP3443036B1 (en) * 2016-04-14 2019-10-09 DENSO-Holding GmbH & Co. Adhesion promoting composition for an anti-corrosion product
US10526510B2 (en) 2016-04-14 2020-01-07 Denso-Holding Gmbh & Co. Adhesion promoting composition for an anti-corrosion product

Also Published As

Publication number Publication date
DE2338431C2 (en) 1982-07-29
FR2195199A5 (en) 1974-03-01
NL7310554A (en) 1974-02-04
CA1023217A (en) 1977-12-27
DE2338431A1 (en) 1974-02-14

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee