Also known as OCC (Old Corrugated Cartons) It is used for shipping containers and is manufactured from a fluted paperboard, called corrugating medium, sandwiched between two paperboards called linerboard
Corrugated metal or cardboard has been folded into a series of small parallel folds to make it stronger. a hut with a corrugated iron roof. in the shape of waves or folds, or made like this in order to give something strength (past participle of corrugare, from com- ( COM-) + ruga )