Optimizing Bulk via the Creping Process

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On a Light Dry Creped (LDC) tissue machine, many things play a role in the final bulk or caliper of the finished sheet. From the fiber preparation area through to winding we can identify the main process drivers. This article will deal predominately with the creping process as it relates to optimizing bulk on bath and facial grades on LDC machines, and assertions made here within can be taken as assuming all other parameters being equal. The intention is to help clarify methods for increasing bulk generation via the creping process and dispel common misconceptions regarding generating bulk at the creping blade.