What Is Peel Testing?

A peel test is a basic form of mechanical testing that measures the properties of an adhesive bond. Peel tests involve applying a tensile force to a flexible substrate that is bound by an adhesive to either another flexible substrate (such as tape, thin film, or rubber) or a rigid substrate (such as metal, rigid plastic, or composite). Common results from a peel test are initial peak force, average force over the seal, and peel strength (average force per width of the specimen).