JPS5478479A - Making of cable coated with rubber or plastic - Google Patents
Making of cable coated with rubber or plasticInfo
- Publication number
- JPS5478479A JPS5478479A JP14555477A JP14555477A JPS5478479A JP S5478479 A JPS5478479 A JP S5478479A JP 14555477 A JP14555477 A JP 14555477A JP 14555477 A JP14555477 A JP 14555477A JP S5478479 A JPS5478479 A JP S5478479A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- bridging
- heating part
- slits
- gas
- 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
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/91—Heating, e.g. for cross linking
-
- 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
- B29C48/05—Filamentary, e.g. strands
-
- 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
- B29C48/06—Rod-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
PURPOSE:To prevent the burn of the core or the blow-up of hot air due to air having invaded during the suspension of bridging, by introducing inert gas into slits of a cylinder located between the crosshead of an extruder and the heating part of a dry bridging cylinder to make a gas flow curtain. CONSTITUTION:The cylinder located between the crosshead 2 of the extruder and the heating part A of the dry bridging cylinder 3 is providee with the slits 9. The inert gas is introduced into the slits 9 while the bridging is stopped. Thereby, the gas flow curtain is made across the cylinder. For instance, the bridging cylinder 3 has a diameter of 240 mm, a heating part A of 20 m in length and a cooling part B of 30 m in length. Nitrogen gas is supplied from a gas feed port 4 to the heating part and maintained at a pressure of 9 kg/cm<2> and a temperature of 350 deg.C in the heating part while a polyethylene-coated cable is moved through the heating part. Thereby, the polyethylene is bridged. As soon as the bridging is finished, nitrogen gas is introduced at a pressure of 0.5 kg/cm<2> into the slits 9 of 5 mm in diameter, thereby making the gas flow curtain. Therefore, the interior of the cylinder is isolated from the external air, so that the air is kept from invading into the cylinder even if the end of the then bridging cylinder 3 is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14555477A JPS5478479A (en) | 1977-12-02 | 1977-12-02 | Making of cable coated with rubber or plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14555477A JPS5478479A (en) | 1977-12-02 | 1977-12-02 | Making of cable coated with rubber or plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5478479A true JPS5478479A (en) | 1979-06-22 |
| JPS5719530B2 JPS5719530B2 (en) | 1982-04-23 |
Family
ID=15387845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14555477A Granted JPS5478479A (en) | 1977-12-02 | 1977-12-02 | Making of cable coated with rubber or plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5478479A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56143733U (en) * | 1980-03-29 | 1981-10-29 | ||
| JPS58147429A (en) * | 1982-02-25 | 1983-09-02 | Nitto Electric Ind Co Ltd | Preparation of oily gel product |
-
1977
- 1977-12-02 JP JP14555477A patent/JPS5478479A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56143733U (en) * | 1980-03-29 | 1981-10-29 | ||
| JPS5827448Y2 (en) * | 1980-03-29 | 1983-06-15 | 古河電気工業株式会社 | Crosslinking and cooling equipment for rubber and plastic insulated cables |
| JPS58147429A (en) * | 1982-02-25 | 1983-09-02 | Nitto Electric Ind Co Ltd | Preparation of oily gel product |
| JPH0261496B2 (en) * | 1982-02-25 | 1990-12-20 | Nitto Denko Corp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5719530B2 (en) | 1982-04-23 |
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