JPS5496789A - Preparation of high foaming polyolefine insulated wire - Google Patents
Preparation of high foaming polyolefine insulated wireInfo
- Publication number
- JPS5496789A JPS5496789A JP270378A JP270378A JPS5496789A JP S5496789 A JPS5496789 A JP S5496789A JP 270378 A JP270378 A JP 270378A JP 270378 A JP270378 A JP 270378A JP S5496789 A JPS5496789 A JP S5496789A
- Authority
- JP
- Japan
- Prior art keywords
- foaming
- polyolefine
- insulated wire
- die
- layer
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
- H01B7/2855—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using foamed plastic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Insulated Conductors (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
PURPOSE:To better electric characteristics while improving mechanical strength, by producting an insulated wire by foaming after simultaneously covering a conductor by extruding a foaming insulating layer and a non-foaming layer. CONSTITUTION:A conductor 1 going out from a nipple 2 is penetrated to a double die manufactured by combining a die 5 for a foaming insulating layer and a die 7 foa a non-foaming layer on a die holder 6, and covered with a polyolefine material 3 for foaming and a polyolefine material 4 for non-foaming by simultaneously extruding the material 3 and the material 4. And a high foaming polyolefine insulated wire is obtained by foaming polyolefine for foaming. Polyolefine materials for foaming and for non-foaming are completely unified because both are under melted conditions, thus improving mechanical strength. Polyethylene and polypropylene with not les than 55% swelling ratio are used as high foaming polyolefine. Polyethylene and polypropylene are utilized as the non-foaming layer.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53002703A JPS5811047B2 (en) | 1978-01-17 | 1978-01-17 | Manufacturing method of highly foamed polyolefin insulated wire |
AU42334/78A AU531473B2 (en) | 1977-12-16 | 1978-12-08 | Foamed plastic insulated wire |
DE2853626A DE2853626C2 (en) | 1977-12-16 | 1978-12-12 | Wire insulated with a foamed plastic and process for its manufacture |
GB7848778A GB2013960B (en) | 1977-12-16 | 1978-12-15 | Foamed plastics insulated wire and method for producing the same |
CA318,075A CA1124950A (en) | 1977-12-16 | 1978-12-15 | Foamed plastic insulated wire and method for producing the same |
FR7835374A FR2412149A1 (en) | 1977-12-16 | 1978-12-15 | METAL WIRE INSULATED BY EXPANDED PLASTIC AND ITS MANUFACTURING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53002703A JPS5811047B2 (en) | 1978-01-17 | 1978-01-17 | Manufacturing method of highly foamed polyolefin insulated wire |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5496789A true JPS5496789A (en) | 1979-07-31 |
JPS5811047B2 JPS5811047B2 (en) | 1983-03-01 |
Family
ID=11536639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53002703A Expired JPS5811047B2 (en) | 1977-12-16 | 1978-01-17 | Manufacturing method of highly foamed polyolefin insulated wire |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5811047B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6210804A (en) * | 1985-07-08 | 1987-01-19 | 三菱電線工業株式会社 | Highly foaming crosslinked polyolefin covered cable |
JPS647715U (en) * | 1987-07-03 | 1989-01-17 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4644497B2 (en) * | 2005-01-25 | 2011-03-02 | 株式会社フジクラ | coaxial cable |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50149758A (en) * | 1974-05-23 | 1975-12-01 |
-
1978
- 1978-01-17 JP JP53002703A patent/JPS5811047B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50149758A (en) * | 1974-05-23 | 1975-12-01 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6210804A (en) * | 1985-07-08 | 1987-01-19 | 三菱電線工業株式会社 | Highly foaming crosslinked polyolefin covered cable |
JPS647715U (en) * | 1987-07-03 | 1989-01-17 |
Also Published As
Publication number | Publication date |
---|---|
JPS5811047B2 (en) | 1983-03-01 |
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