ISO 5629:1983, Paper and board -- Determination of bending stiffness -- Resonance method

Applies to a wide range of papers and boards, but for some materials, such as multi-ply papers and boards, papers and boards with appreciable curl, some soft papers with grammage below about 40 g/m , the measured numerical value may not be strictly identical with the bending stiffness. It does not apply to corrugated boards. This title may contain less than 24 pages of technical content.