Back to results
US 6,471,058 B2Granted
Article with improved tamper evidence
AssigneeSealed Air Corporation
InventorsRengan Kannabiran, Charles P. Kannankeril, Donald E. Setter, Victor Todman
Life of this patent
Estimating the term…
Abstract
An article, such as a tamper evident container, includes an indicator having a first layer including a thermochromic ink composition, and a second layer, disposed on the first layer, having a composition different from the ink composition of the first layer. The article exhibits better evidence of tampering. The first and/or second layer can be in the form of a message.
Claims19
A tamper evident container comprising:
- a) a first portion;
- b) an opening capable of providing access to the interior of the tamper evident container;
- c) a closure portion arranged to be superposable with the first portion;
- d) an adhesive, applied to the first portion or closure portion, having a free surface so arranged as to seal the opening on superposition of the first portion and the closure portion;
- and
- e) an indicator which is capable of displaying a message, wherein the indicator is disposed, on superposition of the first portion and the closure portion, adjacent to the opening, and wherein the indicator comprises
- (i) a first layer comprising a thermochromic ink composition, and
- (ii) a second layer, disposed adjacent the first layer, comprising a composition different from the ink composition of the first layer.
5 more elements
A tamper evident container comprises:
- a) a first portion;
- b) an opening capable of providing access to the interior of the tamper evident container;
- c) a closure portion arranged to be superposable with the first portion;
- d) an adhesive, applied to the first portion or closure portion, having a free surface so arranged as to seal the opening on superposition of the first portion and the closure portion;
- and
- e) an indicator which is capable of displaying a message, wherein the indicator is disposed, on superposition of the first portion and the closure portion, adjacent to the opening, and wherein the indicator comprises
- (i) a first printed layer comprising a first thermochromic ink composition, wherein the first thermochromic ink composition defines an alphabetic, numeric, or alphanumeric message;
- and
- (ii) a second layer, disposed on the first layer, comprising a second thermochromic ink composition different from the first thermochromic ink composition of the first layer.
6 more elements
Dependencies are inferred from the claim text.