ZR-BV Flame-retardant Wire Extrusion Line

ZR-BV Flame-retardant Wire Extrusion Line

ZR-BV wire is a flame-retardant polyvinyl chloride insulated wire. The main characteristic of this type of wire is its flame retardant properties, which can delay the spread of flames to a certain extent. It is usually used for electrical wiring inside buildings and is more suitable for occasions that require flame retardant requirements. The conductor material of ZR-BV wire is generally copper, and the insulation layer is made of polyvinyl chloride, which has good insulation performance and durability.

The ZR-BV flame-retardant wire extrusion line is a specialized system for manufacturing flame-retardant PVC-insulated building wires (ZR-BV type) compliant with GB/T 19666 (China) and IEC 60332 (international) standards. It integrates flame-retardant additive dosing and high-precision extrusion for enhanced fire safety.

Composition of Production Line

The ZR-BV flame-retardant wire extrusion line mainly includes the following core equipment:
Pay off Stand: Release copper/aluminum conductors to maintain stable tension.
Preheating Unit: Heat the conductor to improve insulation adhesion.
Extruder: Melt PVC/XLPE and evenly coat the conductor.
Cooling Tank: Segmented cooling and shaping insulation layer.
Haul off: Control the speed of the production line.
Take-up Reel: Automatic winding of finished wires.
Testing Equipment: Spark tester, laser diameter measuring system, etc.

Process Flow

Pay-off → Preheating → Extrusion coating → Cooling and shaping → Spark detection → Printing → Take-up.

ZR-BV Flame-retardant 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

ZR-BV Flame-retardant Wire Extrusion Line Application

The ZR-BV flame-retardant wire extrusion line is a specialized system for manufacturing flame-retardant PVC-insulated building wires (ZR-BV type) compliant with GB/T 19666 (China) and IEC 60332 (international) standards. It integrates flame-retardant additive dosing and high-precision extrusion for enhanced fire safety.