The purman® project: exploring ways to use waste PU foam as a secondary raw material
Purman Recycling and Processing Ltd. has developed the purman® method, a mechanical recycling process for rigid polyurethane (PU) and polyisocyanurate (PIR) foams.
Lignin, a natural polymer from plant cell walls, plays a crucial role as a binder in this process, enhancing the recycled foam's quality and environmental profile. The purman® method is an answer to the tricky question of how to dispose of PU foam waste - after all, it is designed to be long-lasting. It is not biodegradable and is typically managed through landfilling or incineration.
The goal is to transform the foam waste into valuable materials that are suitable for various applications: insulation, furniture manufacturing and construction.
The pilot phase has demonstrated significant processing capacity and technical feasibility. Efforts focused on optimising operational parameters, improving product quality and assessing the economic viability of the recycling process.
- The project produces high-quality foam blocks, sheets and custom shapes suitable for various uses.
- There is potential for collaboration with industries that generate PU foam waste, ensuring a consistent supply of materials.
- By providing a scalable and cost-effective solution, the purman® method significantly mitigates landfill use and reduces greenhouse gas emissions.
- More information in their research paper.