linerboard
/ˈlaɪnərˌbɔrd/
noun
- A strong, stiff paperboard used as the flat outer layer of corrugated cardboard, especially for making shipping boxes.
- Recycled paper is often used to make linerboard for cardboard boxes.
- The strength of the linerboard determines how much weight the box can hold.
- The factory produces linerboard for the packaging industry.