Abstract: A method for manipulating a piece of material for use as a tab in conjunction with a container. The method includes accessing piece of relatively thin, sheet-like material and forming a hole in the piece of material. The method further includes performing a wiping operation to deform material adjacent to the hole, and performing at least one coining operation to flatten the deformed material. After the at least one coining operation the piece of material has an area of increased thickness adjacent to the hole, and after the at least one coining operation the piece of material has a generally straight inner portion at least partially defining the hole, where the generally straight portion extends at least about 20% of a height of the hole.

Abstract: An end cap including an end cap body made of a relatively thin metal material. The end cap has a main score line formed in the end cap body and defining a flap area. The end cap further includes a tab coupled to the end cap body and having an end positioned adjacent to the flap area. The end cap has a control score line positioned adjacent to the main score line, where the control score line is curved or arcuate along at least part of its length, and has end portions that are parallel or substantially parallel.