Slip Sheet Definition

noun

A blank sheet of paper slipped between newly printed sheets to prevent offsetting.

American Heritage

(roofing) Sheet material, such as reinforced kraft paper, rosin-sized paper, polyester scrim or polyethylene sheeting, placed between two components of a roof assembly to ensure that no adhesion occurs between them and to prevent possible damage from chemical incompatibility, wearing or abrasion of the membrane.

Wiktionary

(shipping) A strong, thin pallet-sized sheet of plastic or fiberboard used to transport heavy items.

Wiktionary