Classic-Therm® Chalk board

External layer - Chalk board sandwich panel

Outer coating of the plate adapted to be written on with chalk.

Inner layer - XPS core

– extruded polystyrene – hard foam without CFCs
– thermal conductivity group 035
– compressive strength 0.30 N / mm2 according to DIN 53421
– water absorption after 28 days <0.7% according to PN-EN 12087 + A1
– flammability class E
– apparent density 30-33 kg / m3
– temperature range -60 / + 70 ° C