GB1371337A - Forming or coating articles by winding thermoplastic material - Google Patents

Forming or coating articles by winding thermoplastic material

Info

Publication number
GB1371337A
GB1371337A GB5760670A GB5760670A GB1371337A GB 1371337 A GB1371337 A GB 1371337A GB 5760670 A GB5760670 A GB 5760670A GB 5760670 A GB5760670 A GB 5760670A GB 1371337 A GB1371337 A GB 1371337A
Authority
GB
United Kingdom
Prior art keywords
layer
thermoplastic material
article
external support
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
GB5760670A
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB5760670A priority Critical patent/GB1371337A/en
Publication of GB1371337A publication Critical patent/GB1371337A/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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/82—Cores or mandrels
    • B29C53/821—Mandrels especially adapted for winding and joining
    • B29C53/824—Mandrels especially adapted for winding and joining collapsible, e.g. elastic or inflatable; with removable parts, e.g. for regular shaped, straight tubular articles
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/583—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features
    • B29C53/585—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features the cross-section varying along their axis, e.g. tapered, with ribs, or threads, with socket-ends
    • B29C53/586—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features the cross-section varying along their axis, e.g. tapered, with ribs, or threads, with socket-ends having corrugations
    • 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
    • B29K2227/00—Use of polyvinylhalogenides or derivatives thereof as reinforcement
    • B29K2227/12—Use of polyvinylhalogenides or derivatives thereof as reinforcement containing fluorine
    • B29K2227/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • 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
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • 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
    • B29L2009/00—Layered products
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/703—Bellows

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

1371337 Making articles by winding SMITHS INDUSTRIES Ltd 18 Oct 1971 [4 Dec 1970] 57606/70 Heading B8G A method of forming an article of, or coating an article with, thermoplastic material comprises the steps of sequentially forming on a mould or an article to be coated, a first layer of thermoplastic material, a layer of fibrous material and a second layer of thermoplastic material, each layer being formed by wrapping around the mould or article material in strip form with adjacent turns of the material overlapping one another, providing an external support for the second layer of thermoplastic material so as to apply a substantially uniform pressure to the whole of the external surface of the said second layer, heating the thermoplastic material to cause the surface of the thermoplastic material to become tacky so as to bond together adjacent turns of each layer of thermoplastic material, and then removing the said external support. The thermoplastic material is of a kind which does not adopt a liquid state when heated, for example polytetrafluoroethylene. The external support may comprise a layer of heat-resistant material in strip form which is wrapped around the second layer of thermoplastic material with adjacent turns of the heatresistant material overlapping one another. Alternatively said external support comprises a mould which extends around the second layer or the support is provided by fluid under pressure. The invention is particularly applicable to the formation of a bellows, the description showing a central core made out of a plurality of sections 10, 11, the core being collapsed when no longer required by first withdrawing the section 10 axially and then moving the sections 11 radially inwards and withdrawing them axially.
GB5760670A 1971-10-18 1971-10-18 Forming or coating articles by winding thermoplastic material Expired GB1371337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5760670A GB1371337A (en) 1971-10-18 1971-10-18 Forming or coating articles by winding thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5760670A GB1371337A (en) 1971-10-18 1971-10-18 Forming or coating articles by winding thermoplastic material

Publications (1)

Publication Number Publication Date
GB1371337A true GB1371337A (en) 1974-10-23

Family

ID=10479576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5760670A Expired GB1371337A (en) 1971-10-18 1971-10-18 Forming or coating articles by winding thermoplastic material

Country Status (1)

Country Link
GB (1) GB1371337A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1190836A2 (en) * 2000-09-19 2002-03-27 Ke-Burgmann A/S Method of manufacturing a lining of polytetraflouroethylene (PTFE) for an expansion joint or similar flexible couplings, a PTFE lining and a tool for use in connection therewith
GB2496229A (en) * 2011-11-01 2013-05-08 Camplas Technology Ltd Forming a flange on a continuously wound structural member

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1190836A2 (en) * 2000-09-19 2002-03-27 Ke-Burgmann A/S Method of manufacturing a lining of polytetraflouroethylene (PTFE) for an expansion joint or similar flexible couplings, a PTFE lining and a tool for use in connection therewith
EP1190836A3 (en) * 2000-09-19 2002-11-06 Ke-Burgmann A/S Method of manufacturing a lining of polytetraflouroethylene (PTFE) for an expansion joint or similar flexible couplings, a PTFE lining and a tool for use in connection therewith
GB2496229A (en) * 2011-11-01 2013-05-08 Camplas Technology Ltd Forming a flange on a continuously wound structural member
GB2496229B (en) * 2011-11-01 2016-02-10 Camplas Technology Ltd Improvements in and relating to filament wound hollow members
EP2773496B1 (en) * 2011-11-01 2017-02-01 Camplas Technology Limited Method of forming one or more flanges on a hollow continuously wound structural member
US9821496B2 (en) 2011-11-01 2017-11-21 Camplas Technology Limited Method of forming one or more flanges on or in a hollow continuously wound structural member

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed