Abstract: A profile strip has a closure element, made of a first material, which contains a base surface, and lateral webs or flanges extending from the base surface on each side of the closure element. An adhesive layer, made of a second material, different than the first material, is attached to the lateral webs, but not to the base surface, by co-extrusion of the adhesive layer with the lateral webs. The adhesive layer is subdivided into adhesive ribs, with each pair of the two adjacent ribs separated from each other by an adhesive-free area. Sub-dividing the adhesive layer into ribs separated by an adhesive-free area substantially eliminates the deformation of the lateral webs when they--and the adhesive ribs--are cooled after the coextrusion.

Abstract: An apparatus is disclosed for testing can ends for leakage. The apparatus includes a series of stations, including an entry station, one or more punishment stations, a testing station and an output station, means for transporting can ends from station to station within the apparatus and means responsive to a detection of a defective end for either alerting an operator to the situation and/or stopping the can end forming equipment until corrective action has been taken.