Tamper-indicating wrappers

Details Tamper-indicating wrappers Tamper-indicating wrappers

1991-03-18

1993-08-10

Sluby, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 43, 428323, 428328, 428497, 428516, 428517, 428520, 428521, 428915, 428916, 428918, 2064591, B65D 7300, B32B 2708

Patent

active

052347320

ABSTRACT:
Tamper-indicating, laminated wrappers wherein a visible change between layers of the wrapper indicate that the wrapper has been punctured or that there has been tampering with the wrapper or its contents. The wrapper may be composed of two or more plies of packaging material such as films made from ethylene vinyl alcohol copolymer or from polyolefins such as polypropylene. In one construction, a transparent or translucent laminated wrapper becomes opaque upon rupture or puncture. In other constructions, a transparent or translucent wrapper becomes colored at the site of the rupture or puncture.

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