GB932910A - Improvements in and relating to a method of lining pipes - Google Patents

Improvements in and relating to a method of lining pipes

Info

Publication number
GB932910A
GB932910A GB1985560A GB1985560A GB932910A GB 932910 A GB932910 A GB 932910A GB 1985560 A GB1985560 A GB 1985560A GB 1985560 A GB1985560 A GB 1985560A GB 932910 A GB932910 A GB 932910A
Authority
GB
United Kingdom
Prior art keywords
pipe
mandrel
lining
attached
closed
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
GB1985560A
Inventor
Frank Saville
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber Co 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 Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB1985560A priority Critical patent/GB932910A/en
Publication of GB932910A publication Critical patent/GB932910A/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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/24—Lining or labelling
    • B29C49/26—Lining or labelling inner lining of tubes
    • 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
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • B29C63/36—Lining or sheathing of internal surfaces using tubular layers or sheathings being turned inside out

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

932,910. Turning inside out. DUNLOP RUBBER CO. Ltd. May 25, 1961 [June 7, 1960], No. 19855/60. Class 112. [Also in Group XXVIII] In a method of lining a substantially rigid pipe 1, e.g. steel, copper, lead or glass fibre reinforced synthetic resin, an end 7 of a plastic lining, e.g. of natural or synthetic rubber or synthetic resin, is attached to one end of the pipe, the lining extending outwardly of the pipe and fitting around a closed mandrel 5 located in position to traverse the pipe, the other end 9 of the lining being attached to the mandrel, and creating a difference in pressure between the interior of the pipe and the exterior space occupied by the mandrel whereby the lining is progressively rolled off the mandrel and attached to the internal surface of the pipe by means of an adhesive layer. As shown, the mandrel which is supported on rollers 25 is a tube of aluminium or steel, closed at one end 6, or alternatively, is closed at both ends or is an inflatable bag, and the pipe 1 is secured to a metal pipe 11 closed by a plate 19 having a vacuum pump connection 21. Reduction of the air pressure within the pipe 1 causes the mandrel to move into the pipe so that the lining is progressively rolled off the mandrel, turned inside out and attached to the interior surface 24 of the pipe, that surface and the inner surface of the liner having previously been coated with a natural or synthetic rubber pressure adhesive. The end of the lining is flared radially outwardly and secured to the flange 3 of the pipe, and the lined pipe is then placed in a steam autoclave until the lining is vulcanized. A cable attached to the mandrel and wound about a braked capstan controls the rate of movement of the mandrel into the pipe. In alternative methods, the mandrel is allowed to move into the pipe a short distance at a time, and is pulled back axially-outwardly relative to the lining and pipe by momentarily releasing the vacuum and sealing of the lining on the mandrel, or the pressure difference between the interior of the pipe and the mandrel is brought about by applying a positive air pressure to the mandrel with respect to the interior of the pipe.
GB1985560A 1960-06-07 1960-06-07 Improvements in and relating to a method of lining pipes Expired GB932910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1985560A GB932910A (en) 1960-06-07 1960-06-07 Improvements in and relating to a method of lining pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1985560A GB932910A (en) 1960-06-07 1960-06-07 Improvements in and relating to a method of lining pipes

Publications (1)

Publication Number Publication Date
GB932910A true GB932910A (en) 1963-07-31

Family

ID=10136333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1985560A Expired GB932910A (en) 1960-06-07 1960-06-07 Improvements in and relating to a method of lining pipes

Country Status (1)

Country Link
GB (1) GB932910A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392062A1 (en) * 1976-12-09 1978-12-22 Mantec Ind Ltd TUBE COATING PROCESS
US4956041A (en) * 1987-12-28 1990-09-11 Osaka Bousui Construction Co., Ltd. Method of lining branch pipe portion of underground main pipe with rigid plastics tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392062A1 (en) * 1976-12-09 1978-12-22 Mantec Ind Ltd TUBE COATING PROCESS
US4956041A (en) * 1987-12-28 1990-09-11 Osaka Bousui Construction Co., Ltd. Method of lining branch pipe portion of underground main pipe with rigid plastics tube

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