Low-Voltage Cable Insulation Extrusion Line

Overview

What the line does

A cable insulation line takes a bare or stranded conductor, passes it through an extruder crosshead where a polymer insulation is applied, cools it in a water trough, checks its diameter and takes it up on a reel or drum. Our line is built for low-voltage products, where high volumes and repeatable quality matter most.

Compounds

The same line can process PVC for general building wire, low-smoke zero-halogen (LSOH or HFFR) compounds for installations where fire safety matters, and XLPE for cables with higher temperature rating. Each compound needs the right screw design, temperature profile and cooling arrangement, so these are configured per compound.

Sections

Payoff and conductor preheating, material feeding, the extruder and crosshead, a cooling trough, an online diameter and eccentricity gauge, a spark tester, the capstan or haul-off, and take-up. The measuring and testing items vary with the product standard your cables must pass.

What defines the configuration

Conductor material and size, wall thickness, insulation compound, product standard, required line speed and the take-up format. A line for thin building wire looks different from one for larger control cable cores. The size range of the series is 0.5 to 10 mm², but a given order is configured for specific sizes.

What is not included

Wire drawing, stranding, bunching, sheathing, armoring and medium- or high-voltage curing lines are separate equipment. We can supply or advise on them as part of a larger cable plant.

Support

Our engineers provide installation guidance, commissioning support and operator training.

From inquiry to quotation

The quote checklist below covers the details needed. Our engineers reply with a written scope, drawings or a specification, and a clear list of inclusions and exclusions you can compare against other options.

Compared with the battery equipment line

This is a continuous-process line: conductor goes in at one end, insulated core comes out at the other, and the line either runs or it does not. The quality targets are numbers you can measure along the way, such as insulation wall thickness, concentricity and surface finish. Lead-acid battery equipment is the opposite kind of plant: a series of batch and cycle machines (casting, pasting, curing, formation) linked by material handling.

Once you have chosen this type of line, the choice that matters most is the compound. PVC runs at modest temperatures on a standard screw. Halogen-free compounds are shear and temperature sensitive and call for a screw designed for them. Cross-linked polyethylene usually adds a curing stage. Send us your compound data sheet and the cable standard you build to.