SphereCel PrintBlock

SphereCel PrintBlock is a fiber glass material for closed molding processes which is volumized by embedding thermoplastic microspheres.

It is ideal as surface material in a laminate due to its little resin absorption and low weight. The perfect surface comes with a good laminate homogeneity and good mechanical stability. Overlapping or tearing the material does not affect the performance of the surface laminate. It is applied dry after the gelcoat / barrier coat or a pre-laminated glass mat and impregnated with resin according to the closed mold application techniques.

This material comes in 1.3mm thickness.

Application Tips (handling procedures)

SphereCel PrintBlock is a glassfiber based product, which is volumized by embedding thermoplastic microspheres in between the fibers. Ideal as surface improvement material because of its low resin pick up and low weight. The perfect surface aspect is combined with good laminate homogeneity and physical properties.

Overlapping or tearing of the material has no negative effect on the surface of the laminate. SphereCel PrintBlock is laid up in dry form against the gelcoat/barrier coat or gelcoat/glassmat layers and is impregnated during the CM process.

The laminating procedures are as follows:

Laminate construction:

  • Gelcoat/Barrier coat


  • Gelcoat/skin-mat
  • SphereCel PrintBlock
  • Glass Reinforcements/PVC foam/Balsa wood/SphereCel SBF CM