PU (Polyurethane) foam core is primarily used where thermal insulation and lightweight structure are both required.
It has a very low thermal conductivity (λ value), making it one of the best insulating core materials available. This is why PU is widely used in:
- Cold storage panels
- Refrigerated transport
- Building insulation systems
However, PU foam generally has lower structural strength compared to PVC or PET, so it is not typically used in high-load composite applications unless reinforced.
Another key feature is its adhesion capability, as PU can bond well with various substrates during in-situ foaming processes, enabling continuous panel production.
