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Bendtsen roughness

31.10.2011 - Cartonboard Know-How

Bendtsen roughness indicates the surface smoothness of coated cartonboard.

Unit 

ml/min

Test Standard

ISO 8791-2       

General information 

Especially for rougher surfaces, the Bendtsen measuring method is more suitable than the PPS measuring method. For determining the Bendtsen roughness, air is pressed within a certain time under defined conditions through a gap between the cartonboard and a metal ring, which is pressed onto the cartonboard. The result shows the air volume per minute (ml/min) which has leaked out. A lower value represents a smoother surface.

Additional details – practical relevance

The roughness is an important parameter for the cartonboard because it has a significant influence on the printing reproduction.