Paper Mill Conversion Squeezes Uncoated Freesheet Supply and Raises Sourcing Prices
Uncoated freesheet prices have jumped due to a major mill conversion, leaving buyers to face tight supply allocation.
Packaging Grade Transitions
Machine Reconfiguration
Adjustments made to paper-making equipment to switch production from one weight or style of boxboard to another allow mills to serve diverse buyer needs. These packaging grade transitions involve changing the fiber mix, chemical additives, and machine speed to achieve the desired paperboard strength. Operators perform these modifications on the fly or during planned short shutdowns.
The ability to execute these changes quickly determines the mill’s market flexibility.
Operational Challenge
Altering the settings of a massive paper machine requires precise control to avoid producing unusable scrap material. During packaging grade transitions, the mill runs a transition batch that does not meet the strict specifications of either the old or new grade. This sub-standard paper must be recycled back into the pulp slurry, which consumes energy and reduces the overall yield of the plant.
Efficient mills minimize this waste by grouping similar grades together in the production sequence.
Production Scheduling
Mill managers plan production runs weeks in advance to balance inventory levels against customer orders. They must schedule packaging grade transitions logically, moving gradually from lighter to heavier sheets to reduce machine downtime. This calculated progression ensures the factory operates at peak efficiency while satisfying a diverse customer base.