Discovering Hidden Causes of Converting Problems, Paper360º March/April 2016
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Paper and board is often further con-verted: glued, printed or coated. For optimal runnability of the converting process and to assure the finished product’s quality, the producer and customer agree on certain specifications. Usually, these specifications are based on standard measurement methods like the Cobb test, Hercules Sizing Test HST, Bendtsen/Gurley porosimeter and Smoothness Beck. Yet often, even though the producer meets the agreed-upon specifications, converting problems occur and the reason is unclear.