The bursting strength of cardboard according to Mullen indicates the maximum resistance (kPa) at which a flat material can be loaded to bursting point by a vertically applied pressure. During the test, a uniformly increasing pressure is transferred to the material through a circularly arched test membrane.

The burst strength provides information on how well packaging base papers and corrugated cardboard resist damage from constant or sudden pressure and is therefore a very important quality feature with regard to load-bearing and transport properties.

Similar tests:

• DIN EN ISO 2758 Paper - Determination of bursting strength
• DIN ISO 3689 Paper and board - Determination of bursting strength after immersion in water