Products & Applications

Wide range of extrusion crossheads

UNITEK offers a wide range of extrusion crossheads and peripheral equipment for numerous applications. Our crossheads combine highest-quality tool steels & alloys with unique heat-treatment technologies and cutting-edge high precision manufacturing. Our technical experts are at your disposal for a detailed technical analysis of your application in order to offer you the best and most economic solution for your extrusion needs.

Crossheads for Single Layer Extrusion

To create the optimum solution for every application different designs are available.

For the selection of the most suitable head size the following parameters are decisive: product dimensions, required capacity and the selected material.

Single layer extrusion only

Centering

Head sizes up to Ø200 cable diameter

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Crossheads for Co-Extrusion

By using different program inserts you may select –

– between skin extrusion, stripe extrusion or single layer extrusion. Crossheads Type SC-V-S are designed for skin and single marking stripe production.

Single- or multi-layer extrusion

Centering

Head sizes up to Ø200 cable diameter

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Dual- and Multi-Layer Extrusion

Different types of heads are available for dual- and multi-layer extrusion.

Depending on the chosen crosshead extrusion of dual-layer, dual-layer plus co-extrusion of stripe/skin or triple layer plus co-extrusion of stripe/skin can be done.

Dual- or multi-layer extrusion

Centering

Head sizes up to Ø100 cable diameter

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Crossheads for Fluoro Polymer Extrusion

Our fluoro-polymer crossheads have to withstand the hardest conditions.

The microatmosphere which is formed during the extrusion process is strongly corrosive. Therefore all of our crossheads are made out of UNALLOY™ our specially developed fluoro-resistant nickel-based alloy.

Single- / Co- / multi-layer extrusion

Centering

Head sizes up to Ø40 cable diameter

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Special Applications

Besides all standard crossheads Unitek offers a large variety of crossheads.

Crossheads for special applications allowing for the extrusion of complex materials and complex products.In addition to the variants described below Unitek offers a number of heads for additional applications, e.g. for extreme thin wall single or multi-layer extrusion coating of pipes, heads for medical extrusion as well as the manufacturing of fuses.

Heads with heart curve and hole distribution

Dual layer heads with intermediate tool System 2IT

Crossheads types

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Bypass valves

Bypass valves or pressure relief valves are metallic sealing valve systems specially designed for the diversion of a polymer melt flow.

These valves come as a separate unit and can be installed on the main extruder side as well as on the co-extruder side of the crosshead.

Function

Flow channel diameter

Drive

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Colour Changing Systems

Depending on product and requirement, one can choose from about two dozen different systems.

The right selection will mainly be subject to what has to be changed – basic colour, stripe colour, both colours, the wall thickness and material of the insulation as well as the frequency of the colour changes.

Changing valve system UCCS

Changing valve system ULCS

Product Folder

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Tools – wire guides & dies

UNITEK extrusion tools are made of state-of-the-art materials only.

They are famous for their extreme accuracy and durability. We offer a large variety of tool designs from standardized to fully customized tools in order to meet every extrusion requirement.

Extrusion tool material

Extrusion tool geometries

Customized tools

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Customized parts

Unitek can provide customized parts for nearly any application for the wire and cable industry.

We can fit our crossheads and peripheral equipment to nearly any existing production line. Based on your drawing or model we can design and manufacture adapters, breaker plates and orifices that matches any extruder design.

Distributors

Adapters / Breaker plates / Orifices

Supports

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