A cardboard sheet that features a fluted core to improve shock absorbsion and add structural integrity to the sheet for packaging purposes.
Corrugated Cardboard is a paper-based sheet material composed of a fluted inner core sandwiched between two flat linerboards. The fluting improves shock absorption, provides cushioning, and adds structural integrity, making it a widely used material for packaging picture frames, art, and related supplies.
Standard corrugated cardboard is not acid-free and will off-gas over time, making it unsuitable for archival or long-term storage of artwork. For preservation purposes, framers should use acid-free foam core or Coroplast instead.
