major manufacturer of printing ink was having a problem with a skin
forming on the ink after the can was re-closed. Shepherd produces these
inner lids that fit inside the metal lid to create a vapor barrier.
lid is designed with a pull tab that can be used by the press operator
to expose the ink without getting it on his fingers. Shepherd built the
in-line tooling to die cut the tab which folds inside the metal lid
until it is opened by the press operator.