Gel-interleaved tamper-evident wrap

Details Gel-interleaved tamper-evident wrap Gel-interleaved tamper-evident wrap

1990-10-09

1992-04-14

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 3692, 428204, 428459, 428916, 206459, 206807, 215203, 215230, 215232, B65D 6516, B65D 3008

Patent

active

051047047

ABSTRACT:
A tamper evident over-wrap is disclosed which employs a multi-layered system including three overlapping layers of containment material and two interleaved layers of reactive material, at least one of which is a gel. Upon formation of an opening of the middle layer of containment material, the previously-isolated layers of reactive material will intermingle and react. These materials react to form a color change. By using a gel, manifestations of tampering attempts are considerably enhanced.

REFERENCES:
patent: 4098577 (1978-07-01), Halpern
patent: 4480749 (1984-11-01), Laucis
patent: 4489841 (1984-12-01), Thompson
patent: 4505399 (1985-03-01), Weiner
patent: 4511052 (1985-04-01), Klein
patent: 4516679 (1985-05-01), Simpson et al.
patent: 4526752 (1985-07-01), Perlman
patent: 4591062 (1986-05-01), Sandhaus
patent: 4685578 (1987-08-01), Dunshee
patent: 4816305 (1989-03-01), Stillwell et al.
patent: 4905851 (1990-03-01), Thompson
patent: 4986429 (1991-01-01), Singleton, Jr.

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