WO1996014200A1 - Method of manufacturing resilient tubing - Google Patents
Method of manufacturing resilient tubing Download PDFInfo
- 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
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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).
Abstract
Description
Claims
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 (en) | 1996-05-17 |
Family
ID=19925007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NZ1995/000115 WO1996014200A1 (en) | 1994-11-07 | 1995-11-03 | Method of manufacturing resilient tubing |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU3939695A (en) |
CA (1) | CA2204730A1 (en) |
GB (1) | GB2309005B (en) |
WO (1) | WO1996014200A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998001277A1 (en) * | 1996-07-05 | 1998-01-15 | Lupke Manfred Arno Alfred | Molding apparatus with non-reflective mold tunnels |
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)
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 (en) * | 1983-08-02 | 1985-02-19 | Furukawa Electric Co Ltd:The | Manufacture of flexible corrugated tube |
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 (en) * | 1989-05-12 | 1990-11-15 | E.I. Du Pont De Nemours And Company | Non-stick embosser roll coating |
US5171500A (en) * | 1989-10-27 | 1992-12-15 | Uponor N.V. | Pipe manufacturing line |
JPH0592434A (en) * | 1991-05-02 | 1993-04-16 | Matsufumi Takatani | Surface treatment of mold for resin molding |
JPH05111939A (en) * | 1991-10-23 | 1993-05-07 | Toshiba Chem Corp | Injection molding die for liquid resin |
JPH05318491A (en) * | 1992-05-19 | 1993-12-03 | Bridgestone Corp | Manufacture of golf ball |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2302829A1 (en) * | 1975-03-03 | 1976-10-01 | Bouchet Sa Manoel | IMPROVEMENTS TO MOLDED PARTS |
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 |
ATE58671T1 (en) * | 1986-11-13 | 1990-12-15 | Unicor Rohrsysteme Gmbh | DEVICE FOR CONTINUOUS PRODUCTION OF PIPES WITH CROSS-PROFILED WALLS. |
-
1995
- 1995-11-03 AU AU39396/95A patent/AU3939695A/en not_active Abandoned
- 1995-11-03 WO PCT/NZ1995/000115 patent/WO1996014200A1/en active Application Filing
- 1995-11-03 CA CA 2204730 patent/CA2204730A1/en not_active Abandoned
- 1995-11-03 GB GB9709261A patent/GB2309005B/en not_active Expired - Fee Related
Patent Citations (11)
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 (en) * | 1983-08-02 | 1985-02-19 | Furukawa Electric Co Ltd:The | Manufacture of flexible corrugated tube |
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 (en) * | 1989-05-12 | 1990-11-15 | E.I. Du Pont De Nemours And Company | Non-stick embosser roll coating |
US5171500A (en) * | 1989-10-27 | 1992-12-15 | Uponor N.V. | Pipe manufacturing line |
JPH0592434A (en) * | 1991-05-02 | 1993-04-16 | Matsufumi Takatani | Surface treatment of mold for resin molding |
JPH05111939A (en) * | 1991-10-23 | 1993-05-07 | Toshiba Chem Corp | Injection molding die for liquid resin |
JPH05318491A (en) * | 1992-05-19 | 1993-12-03 | Bridgestone Corp | Manufacture of golf ball |
Non-Patent Citations (4)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998001277A1 (en) * | 1996-07-05 | 1998-01-15 | Lupke Manfred Arno Alfred | Molding apparatus with non-reflective mold tunnels |
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 |
---|---|
CA2204730A1 (en) | 1996-05-17 |
GB2309005A (en) | 1997-07-16 |
AU3939695A (en) | 1996-05-31 |
GB9709261D0 (en) | 1997-06-25 |
GB2309005B (en) | 1998-06-17 |
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