BVV Sheathed Wire Extrusion Line

BVV Sheathed Wire Extrusion Line

BVV wire is a copper core PVC insulated PVC sheathed cable. B (Building Wire): Refers to wires that are suitable for building wiring. V (PVC insulation): Indicates that the wire uses polyvinyl chloride (PVC) material as the insulation layer. V (PVC sheath): indicates that there is also a layer of PVC sheath on the outside of the wire to provide additional protection.
Structure of BVV Wires
BVV wires usually consist of three parts: copper conductor, PVC insulation layer, and PVC sheath:
Copper conductor: Responsible for conducting current, usually using high-purity oxygen free copper to improve conductivity and durability.
PVC insulation layer: Provides basic electrical insulation, prevents current leakage, and improves safety.
PVC sheath: Increases mechanical strength and prevents damage to wires from external environments such as moisture, friction, etc.

The BVV sheathed wire extrusion line is a complete set of equipment specifically designed for producing copper core polyvinyl chloride insulated polyvinyl chloride sheathed circular cables (BVV). Through secondary extrusion technology, the insulation layer and sheath layer are continuously wrapped to manufacture double protection cables that meet standards.

Composition of Production Line

TConductor Processing System
Copper conductor straightening device (± 0.1mm accuracy);
Active pay off rack: Equipped with tension feedback control.
Double Layer Extrusion System
Main extruder: PVC insulation layer extrusion;
Auxiliary extruder: PVC sheath layer extrusion;
Co extrusion die head: Pressure balance design.
Cooling System
Insulation cooling tank (3-stage gradient cooling);
Sheath cooling groove (5-stage spray cooling);
Intelligent control of water temperature (± 1 ℃).
Linkage Control Device
PLC synchronous control system;
Double traction wheel speed matching (error ≤ 0.05%).
Detection System
Dual channel spark tester (independent insulation/sheath testing);
Laser caliper (real-time monitoring of double-layer thickness).

Process Flow

Pay-off → Copper conductor pretreatment → Insulation layer extrusion → Primary cooling → Sheath layer extrusion → Secondary cooling → Spark detection → Printing → Automatic take-up.

BVV Sheathed Wire Extrusion Line Datasheet

Model	50	60	70	80	90
Pay-off Type	Active or passive	Active or passive	Active or passive	Active or passive	Active or passive
Screw Diameter	φ50 mm	φ60 mm	φ70 mm	φ80 mm	φ90 mm
Screw L/D Ratio	25:1	26:1	26:1	26:1	26:1
Extrusion Amount	70 kg/hr	110 kg/hr	160 kg/hr	220 kg/hr	300 kg/hr
Outlet Wire	φ0.75-4 mm	φ0.8-8 mm	φ1.5-12 mm	φ2-18 mm	φ6-50 mm
Main Motor	11 KW	18.5 KW	37 KW	55 KW	75 KW
Cooling Device	U type	U type	U type	U type	U type
Storage Rack	Horizontal	Horizontal	Horizontal	Horizontal	Horizontal
Traction Power	4 KW	4 KW	4 KW	5.5 KW	11 KW
Production Speed	500 m/min (Max.)	450 m/min (Max.)	400 m/min (Max.)	350 m/min (Max.)	300 m/min (Max.)
Take-up Spool	φ400-630 mm	φ400-630 mm	φ500-630 mm	φ800-1000 mm	φ1000-1250 mm
Coiling Method	Automatic	Automatic	Automatic	Automatic	Automatic

BVV Sheathed Wire Extrusion Line Application

The BVV sheathed wire extrusion line is a complete set of equipment specifically designed for producing copper core polyvinyl chloride insulated polyvinyl chloride sheathed circular cables (BVV). Through secondary extrusion technology, the insulation layer and sheath layer are continuously wrapped to manufacture double protection cables that meet standards.