From Pilots to Top‑tier Insulation Materials: Transforming Unbleached Kraft for High-performance Insulation
I In just one year, Stora Enso’s development programme for unbleached kraft pulp delivered measurable quality improvements aligned with the stringent demands of high-performance electrical insulation papers and boards.
This session shares how targeted trials, tighter process controls, and customer‑driven feedback loops enabled rapid improvement across critical performance parameters such as conductivity, purity, and metal ion content.
Attendees will gain practical insights into how structured quality acceleration and tailored material development can support a broad range of demanding electrical applications.
- How conductivity sets the performance ceiling for insulation papers, why ultra‑low conductivity matters, how it is measured, and which process factors influence it.
- The impact of metal ions on electrical reliability, including how even trace levels can weaken insulation, shorten component lifetimes, and increase failure risks in transformers and capacitors.
- Why combining high purity with low conductivity is essential for creating stable, durable insulation materials that perform reliably in demanding electrical environments.
- The role of responsible fibre sourcing and low‑carbon pulps in enabling more sustainable transformer and electrical‑infrastructure systems without compromising performance.
Tuesday 19 May 12:15 - 12:45 Central Grid
Manufacturing Technologies and Innovations
Sustainability and Energy Efficiency
Speakers
Vice President Segment Bleached and Unbleached Nordic Kraft Pulp, Stora Enso




















