interleaf

listen to the pronunciation of interleaf
English - English
A leaf, often of tissue paper or other thin paper, inserted between the pages of a book to protect illustrations
A sheet of paper or cardboard, placed between layers on a pallet to create a cohesive structure

If you stack high columns of these boxes without using interleafs they'll fall apart.

Same as interleave
{i} blank page inserted between the pages of a book
A page, often of tissue paper or other thin paper, inserted between the pages of a book to protect illustrations
a blank leaf inserted between the leaves of a book
A leaf inserted between other leaves; a blank leaf inserted, as in a book