Cohesive Failure - What is cohesive failure?
Definition of COHESIVE FAILURE:
The breakdown of the intermolecular forces within a substance, which reduces the attraction between molecules and results in a substance separating under external forces.
In labelling, cohesive failure is used to refer to the separation of a pressure sensitive adhesive (sometimes called adhesive splitting) whereby a portion of the adhesive remains on the face material and a portion remains on the substrate (as adhesive residue). Cohesive failure can occur when a label is removed, when a label is exposed to external stresses or pressure, or can be the result of an adhesive having relatively low cohesion and high adhesion with an adjacent surface (or surfaces).Go Back to Glossary