A floating roller peel test is used when a flexible material is bonded to a comparatively rigid adherend. There are normally 2 sets of rollers which are positioned slightly apart to allow a piece of the flexible material to pass between them and be held in an upper vice grip, which is connected to the moving crosshead of the tester. The bonded layer of flexible material with the more rigid adherend is placed loosely below the rollers and allowed to 'float'. The rollers are made from freely-rotating bearings so, as the flexible material is pulled vertically by the testers moving crosshead, the rigid adherend makes contact with the underside of the rollers which facilitate the peeling as they turn.
Floating roller peel jigs can be made such that the specimen is held with rollers at 90-degrees, 135-degrees or other angles of your choice.