This European Standard classifies thermosetting resin based wood adhesives for non-structural applications into durability classes C1 to C4 based on the dry and wet strengths of bond-lines measured under specified conditions after various conditioning treatments.
For special applications, further tests, which do not fall within the scope of this standard, could be applicable.
The adhesives described in this standard are suitable for the bonding of furniture and interior structures, panelling, doors, windows, stairs etc made of wood or derived timber products.
NOTE Thermosetting resin is defined in EN 923 as: monomer, polymer or copolymer, which when cured, changes into a substantially infusible and insoluble product.