Patent ID: 6267505
Filing Date: 2001-07-31
Classification: B65D

Abstract:
A tamper-evident seal comprising:a first seal member having an adhesive surface region bearing adhesive;a second seal member having a sealing surface region located for adhesion to the adhesive borne by the adhesive surface region;at least one of the adhesive surface region and the sealing surface region being at least partially coated with a heat-sensitive layer so that when the adhesive surface region is adhered to the sealing surface region the heat-sensitive layer is sealed between the first seal member and the second seal member for providing evidence of thermal tampering;the other of the adhesive surface region and the sealing surface region being at least partially coated with a cold-sensitive layer so that when the adhesive surface region is adhered to the sealing surface region the cold sensitive layer is sealed between the first seal member and the second seal member for providing evidence of thermal tampering.