LABELLING METHOD Russian patent published in 2008 - IPC B65C1/00 

FIELD: technological processes.

SUBSTANCE: labelling method includes the following operations: applying label to surface of package or product, and applying reagent to sticky layer of label surface, with a capability to destruct glue by this reagent. The quantity of the reagent is inversely proportional to terms of adhesion of the label glue. Before that, signalling information and/or warning is applied under the glued label surface.

EFFECT: invention provides a capability to visually determine whether the object can be used, without package damaging, and to prevent usage of expired product.

4 cl, 3 dwg