GB710453A - The manufacture of plastic tubing - Google Patents
The manufacture of plastic tubingInfo
- 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
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.
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)
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 |
-
1952
- 1952-02-25 GB GB4923/52A patent/GB710453A/en not_active Expired
Cited By (3)
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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