PUre diversity

Polyester Foam Resins

Compared to conventional matrix systems for fibre-reinforced products, UP foam resins offer material and weight reductions of up to 30 % thanks to their micro-cellular foam structure. In simple sealed moulds, glass fibre reinforced plastic components that are smooth on both sides are produced cost-effectively under a vacuum in comparatively short cycle times. The production of sandwich components resistant to bending, with a foam core, and the direct integration of metal reinforcements and threaded elements – for example for large vehicle components – has also proven itself.

Typical properties

  • Dense matrix / composite of approximately 0.6–0.7 g/cm³ / 0.7–1.2 g/cm³
  • Fibre content 20-50% of total weight
  • Moulded part mass per unit area of 3000–5000 g/m²
  • Flexural modulus of elasticity 3000–8000 MPa
  • Bending resistance of 35–185 MPa
  • Impact resistance of 35–65 KJ/m² (with 20–35% glass content)
  • Reinforcing materials:
    • Continuous glass fibre mats
    • Composite glass fibre and fleece mats
    • Natural fibre mats

Special formulations and versions 

  • Systems with long processing times for very large components
  • Foam resin formulations with elevated dimensional stability under heat
  • Systems for fibre-reinforced components with a high level of characteristics
  • Coordination with gel coat / top coat for surface refinement

Flame protection formulations 

  • Electrical industry: UL 94 V0
  • Rail vehicle construction: DIN 5510 (S4, SR1, ST2)


Caravan panels
Side panel MAN Truck
Lab washing basin
Switch case
Switch case
Caravan Roof system
Caravan Roof system