Sealable security bag
AssigneeLearoyd Packaging Limited
InventorTrevor Bernard Nigel Henson
Life of this patent
Estimating the term…
Abstract
A tamper-evident seal comprising: a first seal member having an adhesive surface region; a second seal member having a sealing surface region located for adhesion to 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.
Claims25
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.
A tamper-evident seal comprising:
- a first seal member having an adhesive surface region on a flap bonded to a header area of a bag adjacent an opening into the bag;
- a second seal member having a sealing surface region on a secondary flap bonded to an upper layer of the bag located for adhesion to 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.
A bag comprising:
- a first sheet member and a second sheet member together defining a bag opening therebetween;
- a flap bonded to the first sheet member at the opening;
- a flap engagement member bonded to the second sheet member at the opening;
- and
- a security seal comprising a tamper-evident temperature-sensitive structure borne by the flap or the engagement member and an adhesive structure borne by the other of the flap and the engagement member for adhering the flap to the flap engagement member to close the opening.
A method for forming a bag comprising:
- folding a first sheet member over a second sheet member to define a bag body with a bag opening therebetween;
- providing a first seal body bearing an adhesive structure;
- providing a second seal body bearing a tamper-evident temperature-sensitive structure;
- bonding one of the first and second seal bodies to the first sheet member at the opening to form a flap;
- and
- bonding the other of the first and second seal bodies to the second sheet member at the opening so that the first seal body and the second seal body adhere together to close the opening.
Dependencies are inferred from the claim text.