GB710453A - The manufacture of plastic tubing - Google Patents

The manufacture of plastic tubing

Info

Publication number
GB710453A
GB710453A GB4923/52A GB492352A GB710453A GB 710453 A GB710453 A GB 710453A GB 4923/52 A GB4923/52 A GB 4923/52A GB 492352 A GB492352 A GB 492352A GB 710453 A GB710453 A GB 710453A
Authority
GB
United Kingdom
Prior art keywords
wire
tubing
layer
coating
silver
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
GB4923/52A
Inventor
Gilbert Edward Green
Alfred Richard Brinsley
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.)
Balfour Beatty PLC
Original Assignee
BICC 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 BICC PLC filed Critical BICC PLC
Priority to GB4923/52A priority Critical patent/GB710453A/en
Publication of GB710453A publication Critical patent/GB710453A/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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • B29C33/505—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible cores or mandrels, e.g. inflatable
    • 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
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60—Releasing, lubricating or separating agents
    • B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
    • B29C33/64—Silicone
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of 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
    • 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
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

Plastic tubing is made by forming a layer (as by coating from a solution, suspension or melt or by extrusion) on a metal wire which is then stretched beyond its elastic limit so that the tubing may be removed. In an example a layer of polytetrafluorethylene (P.T.F.E.), 0.003 in. thick, is built up on a 3 ft. length of 0.048 in. diameter nickel-plated annealed copper wire by successively applying coatings of a colloidal aqueous suspension of P.T.F.E., containing emulsifying and stabilizing agents, and drying each coating after application. The P.T.F.E. layer is then removed from both ends for about 1 in., the wire clamped at these ends and stretched until the P.T.F.E. tubing can be slid off. Other plastics such as polyethylene, polyvinyl chloride, polytrifluorochlorethylene and copolymers may be used. To prevent adhesion the wire may be precoated with a material such as silicone fluid or butyl stearate and, to prevent discolouration, the copper wire may be silver or nickel plated. Aluminium or silver wire may be used. Tubing with any desired shape of core may be made by using wire with an appropriate cross-section.ALSO:Plastic tubing is made by forming a layer (as by coating from a solution, suspension or melt or by extrusion) on a metal wire which is then stretched beyond its elastic limit so that the tubing may be removed. In an example a layer of polytetrafluoroethylene (P.T.F.E.) 0.003ins. thick is built up on a 3ft. length of 0.048ins. diameter nickel-plated annealed copper wire by successively applying coatings of a colloidal aqueous suspension of P.T.F.E., containing emulsifying and stabilizing agents, and drying each coating after application. The P.T.F.E. layer is then removed from both ends for about 1in., the wire clamped at these ends and stretched until the P.T.F.E. tubing can be slid off. Other plastics such as polyethylene, polyvinyl chloride, polytrifluorochlorethylene and copolymers may be used. To prevent adhesion the wire may be precoated with a material such as silicone fluid or butyl stearate and, to prevent discoloration, the copper wire may be silver or nickel plated. Aluminium or silver wire may be used. Tubing with any desired shape of bore may be made using wire with an appropriate cross-section.
GB4923/52A 1952-02-25 1952-02-25 The manufacture of plastic tubing Expired GB710453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4923/52A GB710453A (en) 1952-02-25 1952-02-25 The manufacture of plastic tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4923/52A GB710453A (en) 1952-02-25 1952-02-25 The manufacture of plastic tubing

Publications (1)

Publication Number Publication Date
GB710453A true GB710453A (en) 1954-06-09

Family

ID=9786411

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4923/52A Expired GB710453A (en) 1952-02-25 1952-02-25 The manufacture of plastic tubing

Country Status (1)

Country Link
GB (1) GB710453A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1033298B (en) * 1956-06-13 1958-07-03 Guenther Spelsberg K G Whistle for guiding electrical lines
FR2499901A1 (en) * 1981-02-13 1982-08-20 Thoratec Lab Corp APPARATUS AND METHOD FOR MANUFACTURING MULTILAYER TUBE
US4816123A (en) * 1986-04-16 1989-03-28 The Perkin-Elmer Corporation Method of fabricating capillary electrophoresis separation channels

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1033298B (en) * 1956-06-13 1958-07-03 Guenther Spelsberg K G Whistle for guiding electrical lines
FR2499901A1 (en) * 1981-02-13 1982-08-20 Thoratec Lab Corp APPARATUS AND METHOD FOR MANUFACTURING MULTILAYER TUBE
US4816123A (en) * 1986-04-16 1989-03-28 The Perkin-Elmer Corporation Method of fabricating capillary electrophoresis separation channels

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