SphereCel Type GF




View comparison between SphereCel Type GF and SphereCel Type PE

This unique glassfiber core material replaces some core layers of your solid glassfiber laminates and reduces the resin consumption.


Solid glassfiber laminate: Glassfiber laminate with glassfiber core material:
Spheretex Solid Glassfiber laminate table

SphereCel GF is a glassfiber material which is volumized by embedding thermoplastic microspheres.

This product is ideal for wet-on-wet laminates. Particularly suitable for thin laminates due to low resin absorption and low weight. Excellent print block characteristics and laminate homogeneity. Higher bending resistance and tensile strength than material based on polyester tissue. This material comes in 1mm/2mm/3mm/4mm/5mm thicknesses.


  1. Cut SphereCel GF  and the covering glass layers in the required shape. SphereCel GF can easily be cut by using scissors or a knife.
  2. Calculate the amount of resin needed for covering layers and core materials. For SphereCel GF you will need approx. 600 g/m²/mm. Example: SphereCel GF  3,0 mm: 600g*3mm = approx. 1800 g resin per m².


  1. Apply gelcoat if required and let it cure.
  2. Laminate the covering glass layers as usually and de-aerate them.
  3. In case the core material is ≥ 4mm, apply up to 30% of the required amount of resin (i.e. approx. 800 g/m² for a 4,0 mm core material) onto the glass layers.
  4. Then place SphereCel GF onto the resin film. This is to make sure the material is impregnated with resin from the bottom side.
  5. Continue by adding resin onto the layer of SphereCel GF and spread resin with a commonly used tool. Important notice: SphereCel GF absorbs resin quickly. It gets soft when impregnated with resin and can easily be torn apart. We therefore recommend to apply resin carefully. In case fibers stick to the roller while de-aerating, you may add the next glass layer and then de-aerate these layers in one shot.
  6. While de-aerating you can flatten overlapping areas by applying slight pressure onto the roller.
  7. Continue to laminate subsequent covering layers and de-aerate them as usually.



The result after curing is a homogenous laminate with outstanding mechanical properties.









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