Elastomer: A material that can be deformed but when the forces are removed will return to its original form. Serves as the base material for pressure-sensitive adhesives (PSAs).
Fill yarns: Fibers in the scrim fabric of reinforced tape that run crosswise, perpendicular to the warp direction. Also called weft yarns.
Flatback: Smooth paper backing sometimes used in masking tapes.
Migration: The movement over a period of time of an ingredient from one layer to another. This often occurs in PVC (polyvinyl chloride) tapes where plasticizer in the PVC backing “migrates” into the adhesive.