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WO1996014200A1 - Procede de fabrication d'une tubulure elastique - Google Patents

Procede de fabrication d'une tubulure elastique Download PDF

Info

Publication number
WO1996014200A1
WO1996014200A1 PCT/NZ1995/000115 NZ9500115W WO9614200A1 WO 1996014200 A1 WO1996014200 A1 WO 1996014200A1 NZ 9500115 W NZ9500115 W NZ 9500115W WO 9614200 A1 WO9614200 A1 WO 9614200A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubing
stick coating
corrugated
plastics material
convoluted
Prior art date
Application number
PCT/NZ1995/000115
Other languages
English (en)
Inventor
Mark Alexander Jenkins
Original Assignee
Mark Alexander Jenkins
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 Mark Alexander Jenkins filed Critical Mark Alexander Jenkins
Priority to AU39396/95A priority Critical patent/AU3939695A/en
Priority to GB9709261A priority patent/GB2309005B/en
Publication of WO1996014200A1 publication Critical patent/WO1996014200A1/fr

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
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • 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
    • 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
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B29L2023/18—Pleated or corrugated hoses

Definitions

  • This invention relates to a method of manufacturing resilient tubing.
  • the present invention consists of a method of moulding a corrugated or convoluted tube from resilient material, the method being characterised by applying a non ⁇ stick coating to the die blocks used in the moulding of the tubing.
  • the non-stick coating is a permanent coating.
  • the non-stick coating is a tetrafluoroethylene polymer such as Teflon (registered trade mark).
  • Teflon as used in the preferred form of the invention is able to withstand heat (typically temperatures in the order of 190 C are present when the die blocks contact, ie close over, the hot smooth walled tube).
  • heat typically temperatures in the order of 190 C are present when the die blocks contact, ie close over, the hot smooth walled tube.
  • the method of manufacturing by moulding a corrugated or convoluted tube is in accordance with well known techniques whereby an extruded smooth walled tube formed of a plastics material is passed between cold die blocks. These die blocks close about the hot smooth walled tube and the tube is moulded into the corrugated or convoluted form by locating a ventilated torpedo within the tube and forcing the tube into the suitably configured heated die blocks by passing of compressed air through the torpedo.
  • the surfaces with which the plastics material comes into contact during the moulding procedure is coated with the non-stick material, eg Teflon.
  • the thickness of the non-stick material can be in the order of 0.020 to 0.030mm.
  • the material which I have selected for the manufacture of the resilient tubing is Texon, an extrusion grade polyurethane manufactured by Bayer AG. This material is used for medical applications and is both FDA approved and has a National Sanitisation Approval. The material provides a clear hose which even after use and sanitisation/sterilisation remains clear and resilient.
  • Texon Grade DB7 1018 When the hose is used for the delivery of anaesthetic it is necessary that the hose be able to be sterilised by autoclaving and hence for such hose I have chosen Texon Grade DB7 1018. However, for general healthcare use such as for ventilating where the hose only needs to be sanitised or disinfectable I have chosen Texon Grade 990A.
  • Resilient or flexible plastics tubing of corrugated or convoluted form and meeting the requirements of the medical or healthcare industry can be manufactured in clear form in accordance with my invention.
  • the use of the non-stick coating on the surfaces of the die blocks with which the plastics material makes contact during the moulding procedure has enabled me to manufacture in an effective and economic manner.
  • My invention therefore provides for the first time a method of manufacturing such tubing without the problems which have previously faced a manufacturer endeavouring to achieve tubing having the aforementioned characteristics and meeting the medical/healthcare industry requirements.
  • the cuff can be over moulded on the formed hose and in the preferred form the cuff is moulded from a polyurethane but one having a different hardness to that from which the tube is made.
  • the moulding surfaces of the injection moulding tool are coated with a permanent non-stick coating namely tetrafluoroethylene (eg Teflon).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Procédé de fabrication d'une tubulure transparente à ondulations longitudinales ou circonférentielles à partir d'un matériau élastique tel que du polyuréthanne. Ce procédé se réalise selon les techniques de fabrication classiques utilisées pour la fabrication de tubulures à ondulations longitudinales ou circonférentielles, mais est caractérisé en ce qu'un revêtement antiadhésif tel qu'un polymère de tétrafluoroéthylène est appliqué à demeure sur les surfaces des extrudeuses.
PCT/NZ1995/000115 1994-11-07 1995-11-03 Procede de fabrication d'une tubulure elastique WO1996014200A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU39396/95A AU3939695A (en) 1994-11-07 1995-11-03 Method of manufacturing resilient tubing
GB9709261A GB2309005B (en) 1994-11-07 1995-11-03 Manufacture of resilient corrugated or convoluted tubing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ264875 1994-11-07
NZ26487594 1994-11-07

Publications (1)

Publication Number Publication Date
WO1996014200A1 true WO1996014200A1 (fr) 1996-05-17

Family

ID=19925007

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ1995/000115 WO1996014200A1 (fr) 1994-11-07 1995-11-03 Procede de fabrication d'une tubulure elastique

Country Status (4)

Country Link
AU (1) AU3939695A (fr)
CA (1) CA2204730A1 (fr)
GB (1) GB2309005B (fr)
WO (1) WO1996014200A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998001277A1 (fr) * 1996-07-05 1998-01-15 Lupke Manfred Arno Alfred Dispositif de moulage dote de tunnels de moulage non reflechissants
US7608213B2 (en) 2002-08-09 2009-10-27 The Boeing Company Thermoplastic sheet forming apparatus and method
US20100034504A1 (en) * 2008-08-08 2010-02-11 E.I. Du Pont De Nemours And Company Melt Processible Semicrystalline Fluoropolymer Comprising Repeating Units Arising from Tetrafluoroethylene and a Hydrocarbon Monomer Having a Functional Group and a Polymerizable Carbon-Carbon Double Bond, and Multilayer Articles Therefrom

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324748A (en) * 1978-07-28 1982-04-13 Japan Styrene Paper Corporation Process and apparatus for extruding plastic foams through a fluorocarbon lined die shaping means having extended wear characteristics
US4326999A (en) * 1978-10-16 1982-04-27 Th. Goldschmidt Ag Lubricant and release agent for molded rubber articles
JPS6032627A (ja) * 1983-08-02 1985-02-19 Furukawa Electric Co Ltd:The 可撓性波付管の製造方法
US4721594A (en) * 1986-03-20 1988-01-26 Uponor N.V. Method and an apparatus for the production of ribbed pipes
US4911633A (en) * 1988-08-15 1990-03-27 Comfort Gordon A Apparatus for plastic tubing manufacture
US4956141A (en) * 1989-04-07 1990-09-11 Libbey-Owens-Ford Co. Molding process utilizing a mold release membrane
WO1990013423A1 (fr) * 1989-05-12 1990-11-15 E.I. Du Pont De Nemours And Company Revetement non adherent pour rouleaux de gaufrage
US5171500A (en) * 1989-10-27 1992-12-15 Uponor N.V. Pipe manufacturing line
JPH0592434A (ja) * 1991-05-02 1993-04-16 Matsufumi Takatani 樹脂成形用型の表面処理方法
JPH05111939A (ja) * 1991-10-23 1993-05-07 Toshiba Chem Corp 液状樹脂射出成形金型
JPH05318491A (ja) * 1992-05-19 1993-12-03 Bridgestone Corp ゴルフボールの製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2302829A1 (fr) * 1975-03-03 1976-10-01 Bouchet Sa Manoel Perfectionnements aux pieces moulees
GB2035194A (en) * 1979-10-26 1980-06-18 Ici Ltd Moulding foamed urethane plastics articles in a double coated mould
US4681526A (en) * 1986-04-09 1987-07-21 Lupke Manfred Arno Alfred Apparatus for molding thermoplastic pipes
DE3675947D1 (de) * 1986-11-13 1991-01-10 Unicor Rohrsysteme Gmbh Vorrichtung zum fortlaufenden erzeugen von rohren mit querprofilierter wandung.

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324748A (en) * 1978-07-28 1982-04-13 Japan Styrene Paper Corporation Process and apparatus for extruding plastic foams through a fluorocarbon lined die shaping means having extended wear characteristics
US4326999A (en) * 1978-10-16 1982-04-27 Th. Goldschmidt Ag Lubricant and release agent for molded rubber articles
JPS6032627A (ja) * 1983-08-02 1985-02-19 Furukawa Electric Co Ltd:The 可撓性波付管の製造方法
US4721594A (en) * 1986-03-20 1988-01-26 Uponor N.V. Method and an apparatus for the production of ribbed pipes
US4911633A (en) * 1988-08-15 1990-03-27 Comfort Gordon A Apparatus for plastic tubing manufacture
US4956141A (en) * 1989-04-07 1990-09-11 Libbey-Owens-Ford Co. Molding process utilizing a mold release membrane
WO1990013423A1 (fr) * 1989-05-12 1990-11-15 E.I. Du Pont De Nemours And Company Revetement non adherent pour rouleaux de gaufrage
US5171500A (en) * 1989-10-27 1992-12-15 Uponor N.V. Pipe manufacturing line
JPH0592434A (ja) * 1991-05-02 1993-04-16 Matsufumi Takatani 樹脂成形用型の表面処理方法
JPH05111939A (ja) * 1991-10-23 1993-05-07 Toshiba Chem Corp 液状樹脂射出成形金型
JPH05318491A (ja) * 1992-05-19 1993-12-03 Bridgestone Corp ゴルフボールの製造方法

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT, Accession No. 85-078939/13, Class A32; & JP 60 032 627 A, (FURUKAWA ELECTRIC CO), 19 February 1985. *
DERWENT ABSTRACT, Accession No. 93-161936/20, Class P73; & JP 05 092 434 A , (KOTANI), 16 April 1993. *
DERWENT ABSTRACT, Accession No. 93-185027/23, Class A32, A14; & JP 05 111 939 A , (TOSHIBA), 7 May 1993. *
DERWENT ABSTRACT, Accession No. 94-011636/02, Class P36; & JP 05 318 491 A , (BRIDGESTONE), 3 December 1993. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998001277A1 (fr) * 1996-07-05 1998-01-15 Lupke Manfred Arno Alfred Dispositif de moulage dote de tunnels de moulage non reflechissants
US7608213B2 (en) 2002-08-09 2009-10-27 The Boeing Company Thermoplastic sheet forming apparatus and method
US7846287B2 (en) 2002-08-09 2010-12-07 The Boeing Company Preforming thermoplastic ducts
US20100034504A1 (en) * 2008-08-08 2010-02-11 E.I. Du Pont De Nemours And Company Melt Processible Semicrystalline Fluoropolymer Comprising Repeating Units Arising from Tetrafluoroethylene and a Hydrocarbon Monomer Having a Functional Group and a Polymerizable Carbon-Carbon Double Bond, and Multilayer Articles Therefrom

Also Published As

Publication number Publication date
GB2309005A (en) 1997-07-16
AU3939695A (en) 1996-05-31
CA2204730A1 (fr) 1996-05-17
GB2309005B (en) 1998-06-17
GB9709261D0 (en) 1997-06-25

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