We have developed shelf-ready packaging form, “KOKOKARA KAI” . It can be opened with only one action and i m p r o v e w o r k i n g e f c i e n c y . “KOKOKARA KAI” has a notch at a corner. By putting a nger in it and applying a force in the vertical direction, the top of the box is detached easily along a curved line. In addition, the tearing edge looks clean.