corrugate
/ˈkɔrəˌɡeɪt/
verb
- To shape or bend something into a series of parallel folds or ridges, usually to make it stronger or more flexible.
- The factory uses heavy rollers to corrugate sheets of metal for roofing.
- Engineers corrugate the surface of the cardboard to give it extra strength for shipping boxes.
- To make the paper stronger, the machine will corrugate it before cutting it into sheets.