P/S Spot Machines

Pressure sensitive spot labelers, or P S Spot labelers, are designed to apply a pressure sensitive label to a spot on a container or package. Pressure sensitive labels have adhesive pre-applied the back of the label. The label is kept on a roll of film, sticky side to the film, which maintains the stickiness of the pre-applied adhesive. Once the label is ready for application, the label is removed from the roll and applied to the container.

Pressure sensitive labelers can apply a pressure sensitive label using a number of different methods including wipe-on, blow, or tamp. The wipe-on method for pressure sensitive label application requires a package or container to pass near the label head. Once the label head senses the package, the label head feeds the label at the speed of the container. The label is firmly adhered the container by passing below a brush of other mechanism which wipes the label onto the container. Blow pressure sensitive spot labelers, or air blow labelers, feed the entire label below a label applicator. The label is held under the label applicator by a small vacuum pressure. Once the container is sensed, the applicator blows air onto the label and uses the force of the blowing air to apply the label to the container. Tamp labelers are also know as tamp / blow label applicators because the tamp label applicators also use the force of air to push labels onto containers. Tamp labeler feed a full label below a label applicator, much like a blow labeler. The label is held on the label applicator using low-pressure vacuum. Once the container is sensed, the label applicator moves towards the container, usually via air cylinder activation. The label applicator comes very close the container but does not touch it. Once the label applicator is near the container, air is forced through the label applicator to force the label onto the container. The label applicator is then retracted and prepared for the next label. Tamp / blow pressure sensitive labelers are best used for applications where the label needs to be applied into a depression within the container.