Pressboard & Presspaper

Reliable electrical insulation made from the purest cellulose.

Presspaper and pressboard are high-performance electrical insulation materials manufactured from long‑fibered coniferous cellulose. Their exceptional chemical purity and mechanical strength make them the preferred choice for demanding electrical and transformer applications worldwide.

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Application Overview

Both presspaper and pressboard are engineered for use in critical electrical insulation systems where durability, stability and purity are essential. The materials perform reliably when impregnated with oil or resin and comply with international electrical standards.

Oil‑filled transformers
Electrical machines and motors
Capacitors impregnated with oil or resin
General electrical insulation components

What We Solve For

Electrical insulation systems face extreme thermal, mechanical and chemical demands. Our presspaper and pressboard materials address these challenges by delivering consistent insulation performance, long service life and compliance with IEC standards — even in high‑stress transformer environments.

TECHNICAL

Features & Functionality

Functionality & Options

Available as presspaper in rolls
Available as pressboard in sheets or rolls
Suitable for oil or resin impregnation
Non‑woven structure for dimensional stability
Consistent mechanical strength across thicknesses

Key Technical Specifications

Base material: Pure cellulose from long‑fibered coniferous trees
Manufacturing process: Non‑woven formation, pressed without binders
Thermal classification: Insulation class A (105 °C)
Standards: IEC compliant
Forms: Rolls, sheets, and board material depending on thickness

EXPERIENCE

Our Projects Featuring Insulect Industrial Materials

Explore our project highlights to see where Insulect industrial materials are making an impact.
For tailored advice on whether this solution suits your network, please connect with our team here.

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Fortescue Aldoga, New 275kV Substation Switchgear

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Fortescue Future Industries 275 kV Substation Project

ADVANTAGES

Why Choose Insulect for Pressboard & Presspaper

Our insulation materials combine proven natural raw materials with precise manufacturing processes to ensure safety, reliability and long‑term performance in electrical applications.

Proven Transformer Performance

Specifically suited for oil‑filled transformers, our presspaper and pressboard deliver consistent insulation properties, ensuring stable electrical performance and extended equipment lifetime.

High Purity for Critical Applications

The absence of binding agents and the use of high‑purity cellulose minimize contamination risks, making these materials ideal for sensitive electrical and capacitor applications.

Flexible Formats & Thicknesses

With availability in rolls, sheets and boards, and clear differentiation based on material thickness, our products offer design flexibility for a wide range of electrical insulation needs.

IMPLEMENTATION

Services & Support

Insulect offers comprehensive services and support for the products we manufacture and specialise in, enhancing value for local utilities, major energy users, equipment manufacturers, and service operators.

LOCAL TECHNICAL TEAM

Our local technical team provides exceptional support and expertise, ensuring quick response times and personalised service to tackle any challenges that may arise during project execution.

ENGINEERING DESIGN

Our team utilises advanced technology and industry knowledge to develop innovative and efficient high voltage switchgear solutions, customised to fit the unique requirements of each project.

PROCUREMENT & LOGISTICS

We facilitate smooth procurement and logistics processes by sourcing from trusted, proven partners and coordinating timely deliveries, ensuring projects remain on schedule and within budget.

TESTING & COMMISSIONING

Professional testing and commissioning support ensures that every high-voltage switchgear system functions safely and reliably, adhering to all regulatory standards and client expectations.

TURNKEY PROJECT DELIVERY

We are able to oversee every phase from concept to completion, providing comprehensive solutions that simplify complex projects and ensure successful outcomes.

FACTORY VISITS

We facilitate client visits to our local manufacturing sites here in Australia, as well as overseas, for initial inspection as well as factory acceptance testing.