Abstract: A blank for sealing a tray having one or more compartments includes a face stock with a pressure sensitive adhesive pattern which closely matches the top surface area of the tray, excluding the tray compartment areas. The pattern may be precisely formed with the pressure sensitive adhesive containing a coloring or fluorescing agent. The adhesive forms an identifiable registration mark used for properly aligning the adhesive pattern for die cutting the face stock in a specific location in relationship to the pattern. Various types of sensors may be used to identify the registration mark. Alternatively, the pattern may be precisely formed by printing a blocking or deadening agent in a pattern that contains a sensor mark with a blocking or deadening agent that contains a coloring or fluorescing agent, onto a flood coated pressure sensitive adhesive.

Abstract: A card having an adhesive layer for allowing the card to be removably attached to any desired structure. In one embodiment of the invention, the adhesive layer is applied to one of the surfaces of the card and a layer of liner material is disposed over the adhesive layer. Peeling off a portion of the liner material exposes a portion of the adhesive layer. The card can be removably attach to the desired structure by pressing the exposed adhesive layer against the structure. In another embodiment of the invention, the card has a pressure sensitive label portion and a coupon portion. The label portion includes a layer of adhesive between a layer of sheet material and a layer of liner material. Peeling off a portion of the liner material exposes a portion of the adhesive layer. The card is removably attach to the desired structure by pressing the exposed adhesive layer against the structure.