How to mark a witness on the tap body and tap press

摘要

A method of marking a witness on a tab body used to provide a tab for use with a can end, the method comprising providing the tab body to a tab press including a punch and a mold. The punch includes a set of protruding features and the mold includes each set of recessed features, wherein the witness over areas of the tab body in an outwardly facing tab forming surface when the tab is joined to the tab end. The features interact to create . The features are such that when the press is fully closed, the spacing between the minimum portion for each of the protruding features and the minimum portion for each of the respective recessed features is in the areas in the tab forming face. smaller than the thickness of the tab body.