GB1382580A - Pipes - Google Patents

Pipes

Info

Publication number
GB1382580A
GB1382580A GB3026871A GB3026871A GB1382580A GB 1382580 A GB1382580 A GB 1382580A GB 3026871 A GB3026871 A GB 3026871A GB 3026871 A GB3026871 A GB 3026871A GB 1382580 A GB1382580 A GB 1382580A
Authority
GB
United Kingdom
Prior art keywords
former
pipe length
pipe
heated
hot water
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
GB3026871A
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.)
Yorkshire Imperial Plastics Ltd
Original Assignee
Yorkshire Imperial Plastics 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 Yorkshire Imperial Plastics Ltd filed Critical Yorkshire Imperial Plastics Ltd
Priority to GB3026871A priority Critical patent/GB1382580A/en
Priority to DE2231703A priority patent/DE2231703B2/en
Priority to FR7223414A priority patent/FR2143841B1/fr
Priority to IT26386/72A priority patent/IT959997B/en
Publication of GB1382580A publication Critical patent/GB1382580A/en
Priority to KE2678A priority patent/KE2678A/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
    • B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the 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
    • 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
    • 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
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/079—Auxiliary parts or inserts
    • B29C2949/08—Preforms made of several individual parts, e.g. by welding or gluing parts together
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/258—Tubular
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/005—Oriented
    • 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
    • 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
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

1382580 Radially expanding foamed plastics pipes YORKSHIRE IMPERIAL PLASTICS Ltd 26 June 1972 [28 June 1971] 30268/71 Heading B5A [Also in Division F2] A foamed thermoplastics pipe is placed in a former 8, heated to a temperature above its glass transition temperature and below the melting point, and then distended by fluid pressure into contact with the former to orientate the thermoplastics material. A mixture of PVC and azodicarbonamide are heated to foaming temperature (170-200‹ C.), extruded, and the formed pipe cut into lengths. Each pipe length 23 is placed on a hollow support mandrel (not illustrated), and clamped at each end by chevron PTFE rings 20 and brass rings 21, 22 between plugs 7 and 13 that are attached to the end of the female former 8. The former 8 and pipe length 23 are placed in a hot water bath at 86‹ C. for 20 minutes, the water passing through interrupted end flanges 6, and passages 15. Compressed nitrogen (or hot water or air), is passed into both ends of the pipe length through passages 15 to radially expand the length 23 into contact with the former 8, which may be grooved or include annular projections. The pressure is raised at 10 lb./sq. inch/minute to 60 p.s.i., while hot water bleeds through tiny holes in the former 8. The former and pipe length are placed in a cold water bath at 10‹ C. for 10 minutes, whereafter the nitrogen pressure is released. The tapered ends of the pipe length are cut off. Radial expansion at 80-90‹ C. for PVC (or 150‹ C. for polypropylene heated by hot air or radiant heat) causes orientation of the plastics. Uses.-Soilpipes, or rainwater downpipes.
GB3026871A 1971-06-28 1971-06-28 Pipes Expired GB1382580A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB3026871A GB1382580A (en) 1971-06-28 1971-06-28 Pipes
DE2231703A DE2231703B2 (en) 1971-06-28 1972-06-28 Method for producing a self-supporting pipe from a thermoplastic material
FR7223414A FR2143841B1 (en) 1971-06-28 1972-06-28
IT26386/72A IT959997B (en) 1971-06-28 1972-06-28 IMPROVEMENTS IN OR CONCERNING PIPES
KE2678A KE2678A (en) 1971-06-28 1976-11-25 Improvements in or relating to pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3026871A GB1382580A (en) 1971-06-28 1971-06-28 Pipes

Publications (1)

Publication Number Publication Date
GB1382580A true GB1382580A (en) 1975-02-05

Family

ID=10304957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3026871A Expired GB1382580A (en) 1971-06-28 1971-06-28 Pipes

Country Status (5)

Country Link
DE (1) DE2231703B2 (en)
FR (1) FR2143841B1 (en)
GB (1) GB1382580A (en)
IT (1) IT959997B (en)
KE (1) KE2678A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306609A (en) * 1995-11-02 1997-05-07 Hepworth Building Prod Jetting resistant pipe
WO2014058413A1 (en) * 2012-10-09 2014-04-17 Hamilton Sundstrand Corporation Method for attaching metallic flanges to thermal plastic ducts
CN114683517A (en) * 2020-12-30 2022-07-01 脉通医疗科技(嘉兴)有限公司 Pipe manufacturing equipment and manufacturing method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1589052A (en) * 1976-09-23 1981-05-07 Yorkshire Imperial Plastics Pipe of oriented thermoplastic polymeric material and method of forming the same
NL8802304A (en) * 1988-09-16 1990-04-17 Wavin Bv EXTRUDED, BIAXIAALLY PROVIDED FOAM PLASTIC TUBE AND METHOD FOR THE MANUFACTURE THEREOF
NL8802305A (en) * 1988-09-16 1990-04-17 Wavin Bv EXTRUDED RADIALLY PROVIDED PLASTIC TUBE AND METHOD FOR MANUFACTURING SUCH A TUBE.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306609A (en) * 1995-11-02 1997-05-07 Hepworth Building Prod Jetting resistant pipe
GB2306609B (en) * 1995-11-02 1998-11-04 Hepworth Building Prod Jetting resistant pipe
WO2014058413A1 (en) * 2012-10-09 2014-04-17 Hamilton Sundstrand Corporation Method for attaching metallic flanges to thermal plastic ducts
US10350796B2 (en) 2012-10-09 2019-07-16 Hamilton Sundstrand Corporation Method for attaching metallic flanges to thermal plastic ducts
CN114683517A (en) * 2020-12-30 2022-07-01 脉通医疗科技(嘉兴)有限公司 Pipe manufacturing equipment and manufacturing method thereof

Also Published As

Publication number Publication date
FR2143841B1 (en) 1977-01-14
KE2678A (en) 1976-12-10
DE2231703A1 (en) 1973-01-18
IT959997B (en) 1973-11-10
DE2231703B2 (en) 1979-02-01
FR2143841A1 (en) 1973-02-09

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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