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3. Extruder
The extruder is an essential component of the wiring line. It can be used for "conventional" extrusion or for reactive extrusion (foaming, cross-linking). In "conventional" use, its function is to convey, melt, homogenize and pressurize the insulating material. For the two extrusion processes specific to cables, foaming and cross-linking, it is also used as a chemical reactor. The reasons for using these special processes lie in the specific characteristics required of the cables. For data transmission, signal propagation speed depends on the cable's dielectric constant; for power transmission cables, higher mechanical strength at higher temperatures is required.
3.1 Description of the single-screw extruder
The vast majority of cable insulation and sheathing...
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Extruder
Different types of heads and dies
References
Manufacturer – Suppliers – Distributors
(Non-exhaustive list)
Website of wire-drawing machine and wire-drawing wire manufacturers mentioned
Niehoff : http://niehoff.de/
Samp : http://www.sampsistemi.com/
Elektrisola...
Websites
The history of cables and their production.
Porthcuno Telegraph Museum: http://www.porthcurno.org.uk/html/submarine.html
History of the Atlantic submarine telegraph cable http:// www.atlantic-cable.com/
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