Dynamic Vapor Sorption Mechanics in Recycled Packaging Substrates
Recycled packaging substrates exhibit non-Fickian moisture uptake and severe hysteresis, reducing compressive strength by over 20 percent under cyclic humidity.
Paperboard Anisotropic Hygrothermal Expansion Mechanics in Converting Operations
Paperboard expands five to seven times more across the grain than along it, requiring precise humidity control and pass timing to maintain converting register.
Managing Paperboard Hygroexpansion and Moisture Balance in Converting Operations
Targeting 5.5 to 6.5 percent board moisture and maintaining 50 percent relative humidity prevents hygroexpansion fan-out, registration drift, and score cracking.
High Velocity Delamination Threshold Shear Energy Dissipation Recycled Fibre Calipers Impact Dynamic Recovery
Dynamic delamination thresholds in recycled calipers dictate converted score integrity, requiring minimum inter-ply shear energy dissipation under high strain rates.
Standard Laboratory Conditioning versus Unheated Warehouse Storage for Coated Folding Boxboard Stock
Unheated warehouse storage alters boxboard moisture equilibrium, inducing wavy edges and core bond loss; thermal acclimation before press release prevents spoilage.