GB934393A - Improvements in the manufacture of reinforced plastic tubes - Google Patents

Improvements in the manufacture of reinforced plastic tubes

Info

Publication number
GB934393A
GB934393A GB15910/62A GB1591062A GB934393A GB 934393 A GB934393 A GB 934393A GB 15910/62 A GB15910/62 A GB 15910/62A GB 1591062 A GB1591062 A GB 1591062A GB 934393 A GB934393 A GB 934393A
Authority
GB
United Kingdom
Prior art keywords
core
tubes
shell
split
mould
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
GB15910/62A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB934393A publication Critical patent/GB934393A/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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
    • B29C70/446—Moulding structures having an axis of symmetry or at least one channel, e.g. tubular structures, frames
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/76—Cores
    • 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
    • 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)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

934,393. Moulding reinforced plastic tubes. S. PAVICEVIC. April 26, 1962 [April 28, 1961], No. 15910/62. Class 87(2). A mould, for producing reinforced plastic tubes, comprises a rigid tubular shell 1, end plates 10, 11, and an expansible core, Fig. 3, comprising two longitudinally split resilient tubes 2, 3 fitted one inside the other, the two splits being angularly dislpaced from each other. The outer split tube 3 is chamfered, adjacent to the split, so as to merge smoothly into the contour of the inner tube 2. The angular separation of the splits is maintained by pegs 2a. When the mould is assembled the volume enclosed by the core and end plates is rendered vacuum tight by resilient end seals 15 and by seals 8, 9 between the two split tubes. The shell and end plates are similarly sealed by end seals 16. One embodiment, Fig. 5 (not shown), comprises a divided shell with chambers 17, 18 for the passage of steam or coolant. The shell and core may be shaped as in Figs. 6, 7 (not shown), if tubes having wide or narrow end sections are required. In operation, glass fibre impregnated with liquid plastic is wound on to the core. The mould is assembled, and by means of ports 13, 14, the space between the core and shell, containing the plastic, is evacuated, while pressure is applied inside the core.
GB15910/62A 1961-04-28 1962-04-26 Improvements in the manufacture of reinforced plastic tubes Expired GB934393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP27068A DE1145785B (en) 1961-04-28 1961-04-28 Mold for the production of pipes from plastic reinforced with fiberglass fabric

Publications (1)

Publication Number Publication Date
GB934393A true GB934393A (en) 1963-08-21

Family

ID=7370681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15910/62A Expired GB934393A (en) 1961-04-28 1962-04-26 Improvements in the manufacture of reinforced plastic tubes

Country Status (2)

Country Link
DE (1) DE1145785B (en)
GB (1) GB934393A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141953A (en) 1975-08-05 1979-02-27 Societe Chimique Des Charbonnages Cdf Chimie Method for accelerating the transformation of the crystalline form of isotactic polybutene pipe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1213904A (en) * 1958-11-05 1960-04-05 Babbitt Pipe Co Reinforced plastic ducts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141953A (en) 1975-08-05 1979-02-27 Societe Chimique Des Charbonnages Cdf Chimie Method for accelerating the transformation of the crystalline form of isotactic polybutene pipe

Also Published As

Publication number Publication date
DE1145785B (en) 1963-03-21

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