FORDIA Calibrated Underpacking Foil Precision packing for stable pressure, consistent print length and cleaner press changeovers. 1. Product Positioning CORE PROMISE Stable packing height produces more even cylinder pressure, more consistent registration and more predictable press performance. FORDIA Calibrated Underpacking Foil is a precision-converted polyester underlay designed for offset printing plate and blanket cylinders. It replaces unstable stacks of paper packing