Paper or similar material that has a remoistenable or self-sticking adhesive applied to one side of the stock. If the adhesive is self-sticking, the stock includes a backing paper called a “release liner” which is applied over the adhesive when the paper is manufactured.
The release liner protects the adhesive from sticking to other surfaces during processing. Stock coated with a remoistenable adhesive must have moisture applied to activate the adhesive and does not require a liner over the adhesive.