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What Really Causes Folding Cracks in Paperboard: SBS vs FBB vs CCNB?
Folding cracks in paperboard cartons are caused by more than just material quality. This article explains how SBS, FBB, and CCNB behave differently under folding stress, and how ink coverage, humidity, coating, and fiber structure affect visible cracking. Using real factory-side observations, the guide helps brands choose the right paperboard for better print quality, cleaner folds, and more stable packaging production.