METHOD FOR CONTROLLING KIND OF PACKAGING BAG, AND PACKAGING BAG AND PACKAGING DEVICE FOR PERFORMING THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for automatically classifying a packaging bag being different in kind display but closely similar in pattern when it is mixed in a manufacturing step without impairing the appearance as a commodity of a product to be packaged by the packaging bag. SOLUTION: A kind identification marker is printed on a part which is exposed outward in the manufacturing step of the packaging bag and hidden by at least one of components of the packaging bag when the bag is completed. The marker is scanned during the manufacturing step to automatically classify a bag in different kind. COPYRIGHT: (C)2003,JPO