Crushing of Double-Walled Corrugated Board and Its Influence on the Load Capacity of Various Boxes

As long as non-contact digital printing remains an uncommon standard in the corrugated packaging industry, board crushing a real issue that affects load capacity of boxes. Crushing mainly occurs during converting (e.g., analog flexographic or laminating) and is process cannot be avoided. However, this study shows, it can controlled. In work, extended laboratory tests were carried out on double-walled board. The influence fully controlled (with precision ±10 μm) range from 10 to 70% different measurements was checked. typical mechanical tests—i.e., edge crush test, four-point bending shear stiffness torsional etc.—were performed reference crushed specimens. residual thickness reduction samples also All empirical observations basis for building analytical model proven verified then used effect selected efficiency simple packages with various dimensions. proposed measurement technique successfully precisely estimate thus control board, while numerical techniques packaging. A good correlation between measured reduced cardboard predictive models obtained.