Papirpapp

Papirpapp is a lightweight paper-based composite material designed for sustainable packaging, craft, and interior applications. It combines recycled paper fibers with a biobased binder, such as starch or lignin, and is formed into sheets, blocks, or molded shapes. The resulting material retains the flexibility of paper while gaining enhanced rigidity and dimensional stability suitable for light-load components.

Production typically involves pulping post-consumer paper, mixing in the binder and sometimes natural fillers, forming the mixture into a sheet or block, and applying heat or pressure to set it. The process aims to minimize energy use and rely on recyclable or compostable components where possible.

Key properties vary with formulation but papirpapp is generally low density, easy to machine, and offers some thermal and acoustic insulation. It is more moisture-sensitive than many wood composites, though surface coatings or laminates can improve water resistance.

Applications span decorative panels, packaging inserts, prototyping materials, and educational or craft products. In niche markets it is promoted as an eco-friendly alternative to plastics and foams, particularly when waste streams are closed within a local circular economy.

The term papirpapp appears to originate from a blend of words meaning paper and cardboard in several European languages and is used mainly in design circles. It is not widely standardized in industry and widely varies by producer.