Inventors:
Raymond R. Rivera - Cottage Grove MN
Stephen B. VanVleet - Woodbury MN
Shari J. Wilson - Minneapolis MN
Assignee:
Minnesota Mining and Manufacturing Company - St. Paul MN
International Classification:
B32B 710
Abstract:
A tamper indicating film and tape for use with a package. The tape includes a delaminating film including pahse separated polymers. Indicia are applied to opposing major surfaces of the film indicative of different conditions of the tape. The film is adhesively applied to secure container parts together and enclose an opening in the container. When applied, only one of the indicia are perceptible. When the film is internally delaminated, obscuring one set of indicia and rendering the other set of indicia perceptible.