Tamper evident packaging

Details Tamper evident packaging Tamper evident packaging

B - Operations, Transporting

65

D

B65D 55/02 (2006.01) B65D 75/54 (2006.01) G01N 21/78 (2006.01) G01N 31/22 (2006.01) G09F 3/02 (2006.01)

Patent

CA 2435541

Atamper evident packaging system including a tag (10) attachable to a package comprising a substantially oxygen impermeable upper barrier layer (12a), a reactive intermediate layer (14) including a reactive material changeable between an un-reacted condition in the absence of oxygen and a reacted condition in the presence of oxygen to produce a visible colour change, and a lower layer (12b) which can be a substantially oxygen impermeable lower barrier layer or an integral part of the package.

L'invention concerne une étiquette pouvant être fixée à un emballage afin de produire un système d'emballage inviolable. Ce système se caractérise en ce que ladite étiquette comprend une couche formant barrière supérieure sensiblement imperméable à l'oxygène, une couche intermédiaire réactive comprenant un matériau réactif pouvant changer entre un état sans réaction en l'absence d'oxygène et un état avec réaction en présence d'oxygène. Ledit changement se traduit par un changement de couleur visible.

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