Patent ID: 8414031

Claim:
An information concealing label comprising: a label base having front and back sides; an adhesive layer formed on said back side of said label base, and an ink layer disposed on said adhesive layer so as to cover a portion of said adhesive layer, thereby forming a weak adhesive portion having a rectangular shape, said ink layer being disposed so as to be surrounded by said adhesive layer at a periphery of said label base, thereby forming a strong adhesive portion, said weak adhesive portion having adherence weaker than that of said strong adhesive portion; and a peelable sheet peelably overlaid on said adhesive layer, wherein said label base has a group of a large number of slits successively arranged along three linear sides of a rectangular boundary loop between said weak adhesive portion and said strong adhesive portion, and each of said slits along the three linear sides of the rectangular boundary loop extends in a direction transverse to a direction of a respective side of said boundary loop.