Resin-uptake calculator

Thermoformed structural cores provide the lightest solution for curved sandwich structures. To quantify this, we have developed a resin-uptake calculator, verified with real-life tests, to compare 2D kits with our 3D Core Kits. Use the calculator to gain insight to potential weight savings.

foam core finishing

Our 3D Core Kits are delivered perforated with or without infusion grooves. 2D kit structural foam core is available in many finishing options, which greatly affect the final weight of the sandwich structure.

Perforated core

Drilled or punched holes to aid air removal from the layup.

Grooved core

Grooves on one or both sides to aid vacuum infusion. Also available with perforations.

single-cut core

Knife- or saw- cuts in one direction on one or both sides. The cuts aids conformity to the required shape.

double-cut core

Knife- or saw- cuts in two directions on one or both sides. Triple-cut core is another variant.

Contour scrim

Knife- or saw- cuts in two directions on one side. A glass fibre scrim is bonded onto the opposite side.

Each structural foam core supplier has different options for the finishing. Please consult the relevant material supplier data sheets on the right for the required values.

the calculator

General input

Choose your process Prepreg Vacuum Infusion

Choose your structural foam and/or Recomended resin uptake (L/m2)

Choose your foam thickness (mm)

Choose your foam curvature (mm)

Cured resin density (kg/L)

3D Core Kit input

Perforation on foam Hole diameter (mm) Hole spacing (mm)

Groove pattern for vacuum infusion Groove spacing (mm) Groove width (mm) Groove depth (mm)

2D kit input

Choose your cut details Cut spacing (mm) Cut width (mm) Cut depth (mm)

Resin-uptake 3D Core Kit versus 2D Kit [kg/m2]

Resin-uptake 3D Core Kit with and without infusion grooves [kg/m2]

We would love to hear from you if you have any feedback or improvements you would like to see implemented in the calculator!

Download our 3D Core Kit Product Brochure