Answers
Corrugated cardboard is a plain paper sheet material, for the production of which recycled paper is also used. Multiple paper layers are factory folded to make a regular wave, and this folded corrugated layer is placed between large, smooth paper sheets. This way the strength of the sheets is ensured. Normally Foldlife uses brown sheets, but also sheets with white paper surface can be used. If after use corrugated cardboard is not too dirty, it can be processed again to make new corrugated cardboard sheets.
