Skin-foaming-skin Extrusion line

The insulated single wires of the seven types of network cables are extruded by foaming materials using the three-layer co-extruded physical foaming structure (skin-foam-skin) which is currently the most superior wire extrusion process. With the use of foaming insulation materials, it allows telecommunication in the meantime reducing the wire and cable cost compared to the solid cable.

The insulated wire core is extruded by three-layer co-extruded technique, achieving "skin + foam PE + skin". The insulation materials of the cable, foam PE suitable for extrusion of seven types of network cables and high frequency cable as well as signal cable

• Applicable material: Foam‐PE
• Insulation method: Skin‐Foam‐Skin
• Foaming degree: 35%
• Capacitance tolerance: ±1PF
• Wire diameter tolerance: ±0.01
• Length to diameter ratio of screw: 28:1
• Screw compression ratio: 3.0‐3.2
• Conductor diameter: 0.15‐0.5mm
• Insulation external diameter: 0.5‐1.5mm
• Maximum line speed: Max.500m/min

1. 500mm driven pay off machine)
2. Straighting platform
3. Copper wire preheater
4. 30mm inner skin extruder
5. 50mm pe foam extruder
6. 35mm outer skin extruder
7. Crosshead
8. Telescopic constant warm water tank

9. Cooling water tank
10. Capstan
11. Cable accumulator
12. Capacitance tester
13. Diameter gauge
14. Sparker tester
15. Double spool take-up
16. Electric control cabinet