GB1171931A - Methods of Manufacturing Tubing. - Google Patents

Methods of Manufacturing Tubing.

Info

Publication number
GB1171931A
GB1171931A GB4026566A GB4026566A GB1171931A GB 1171931 A GB1171931 A GB 1171931A GB 4026566 A GB4026566 A GB 4026566A GB 4026566 A GB4026566 A GB 4026566A GB 1171931 A GB1171931 A GB 1171931A
Authority
GB
United Kingdom
Prior art keywords
filament
tube
gripping
coating
polyvinyl chloride
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
GB4026566A
Inventor
Robert Michael Garrett
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.)
Vickers Ltd
Original Assignee
Vickers 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 Vickers Ltd filed Critical Vickers Ltd
Priority to GB4026566A priority Critical patent/GB1171931A/en
Priority to DE19691958966 priority patent/DE1958966A1/en
Publication of GB1171931A publication Critical patent/GB1171931A/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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from the mould
    • B29C37/0017—Discharging moulded articles from the mould by stripping articles from mould 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
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/42—Removing articles from moulds, cores or other substrates
    • 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
    • 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
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • 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
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0073—Solution

Landscapes

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

Abstract

1,171,931. Tubular filaments. VICKERS Ltd. 16 Aug., 1967 [8 Sept., 1966], No. 40265/66. Heading B5B. A method of manufacturing a tube, comprises coating a drawable filament with a solidifiable material, causing or allowing the material to solidify to form a tubular coating on the filament and thereafter removing the filament from the coating by drawing the filament so as to produce the required tube. The solidifiable material may be, for example, a solution of polyvinyl chloride, or a polymerizable material capable of being solidified by polymerization, and possibly containing a polymerization catalyst, e.g. a silicone fluid. The drawable filament is suitably a nylon filament, especially an undrawn nylon monofilament. A liquid lubricant, suitably water or a surface-active agent, may be introduced between the tubular coating and the filament to assist the withdrawal of the filament. In a preferred method, the drawable filament is coated with the solidifiable coating material by pulling the filament through the solidifiable material, in a dust-free environment if tubes free from pinholes are desired. A number of methods of gripping the tube during removal of the filament may be used, including (a) gripping the tube between two layers of adhesive tape fastened to a rigid base, e.g. double-sided linen tape under the tube which is then covered by, e.g. "Sellotape" (Registered Trade Mark), (b) embedding the tube in a low melting point adhesive, for example Scotch glue, or, for large sizes of tubing, in a low melting-point wax; (c) embedding the tube in a soluble adhesive which can readily be redissolved without causing damage to the tube, e.g. polystyrene cement; (d) gripping the tube between two or more non-adhesive members, which are either rigid and roughsurfaced, or elastic surfaced, e.g. rough surfaced metal plates or plates coated with rubber; and (e) gripping the tube only at the point where the filament is being drawn, whereby the elastic forces of the tube overcome the friction between the drawn filament and the tube. Such gripping may be carried out manually or mechanically by pulling the filament at constant speed, the tube being gripped between rollers geared to the puller so that the part of the filament being drawn is always between the rollers. The viscosity of the unpolymerized silicone fluid can be adjusted by dilution, e.g. with toluene, or by filling, e.g. with "Aerosil", a finely divided commercially available silica. Polyvinyl chloride tubes can be made by using a solution of plasticized polyvinyl chloride in tetrafluoroethane of suitable viscosity in the aforementioned method. The solution is preferably used in a covered vessel to prevent excessive solvent evaporation. An example illustrates the production of tubes having a bore of 0À002 inch radius by pulling undrawn nylon filaments at 2 inches per minute through either solutions of polyvinyl chloride, or through silicone fluids.
GB4026566A 1966-09-08 1966-09-08 Methods of Manufacturing Tubing. Expired GB1171931A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4026566A GB1171931A (en) 1966-09-08 1966-09-08 Methods of Manufacturing Tubing.
DE19691958966 DE1958966A1 (en) 1966-09-08 1969-11-24 Small flexible tube made by pulling filame- - nt from coating sleeve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4026566A GB1171931A (en) 1966-09-08 1966-09-08 Methods of Manufacturing Tubing.
DE19691958966 DE1958966A1 (en) 1966-09-08 1969-11-24 Small flexible tube made by pulling filame- - nt from coating sleeve

Publications (1)

Publication Number Publication Date
GB1171931A true GB1171931A (en) 1969-11-26

Family

ID=25758151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4026566A Expired GB1171931A (en) 1966-09-08 1966-09-08 Methods of Manufacturing Tubing.

Country Status (2)

Country Link
DE (1) DE1958966A1 (en)
GB (1) GB1171931A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499901A1 (en) * 1981-02-13 1982-08-20 Thoratec Lab Corp APPARATUS AND METHOD FOR MANUFACTURING MULTILAYER TUBE
WO1997018936A1 (en) * 1995-11-22 1997-05-29 Rijksuniversiteit Te Groningen A method and a system for manufacturing a catheter and a catheter manufactured by that method
EP1790461A2 (en) * 2001-03-22 2007-05-30 Nuova Astra SRL Methods and apparatuses for producing or working roller means, roller means for decorating objects.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2757473A1 (en) * 1977-12-22 1979-07-05 Bayer Ag METHOD OF DEMOLMING A PLASTIC MOLDED PART BUILT ON A CORE
US5318539A (en) * 1986-10-17 1994-06-07 Alexander G. B. O'Neil Liquid feeding apparatus utilizing capillary tubing, and syringe driver

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499901A1 (en) * 1981-02-13 1982-08-20 Thoratec Lab Corp APPARATUS AND METHOD FOR MANUFACTURING MULTILAYER TUBE
WO1997018936A1 (en) * 1995-11-22 1997-05-29 Rijksuniversiteit Te Groningen A method and a system for manufacturing a catheter and a catheter manufactured by that method
EP1790461A2 (en) * 2001-03-22 2007-05-30 Nuova Astra SRL Methods and apparatuses for producing or working roller means, roller means for decorating objects.
EP1790461A3 (en) * 2001-03-22 2007-08-01 Nuova Astra SRL Methods and apparatuses for producing or working roller means, roller means for decorating objects.

Also Published As

Publication number Publication date
DE1958966A1 (en) 1971-05-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees