SELECTIVE HORIZONTAL, CONTINUOUS VERTICAL, SEALING ACTION

摘要

A method and apparatus for sealing a business form having pressure activated adhesive utilizes a minimum amount of equipment in a simple arrangement that has optimum versatility. Sealing is accomplished utilizing a first set of rolls which has a first substantially continuous roll and a second roll having a non-round shape with at least one projection (and typically having a configuration that in end view substantially simulates an airplane propeller including first and second projections angularly spaced about 180 DEG ). The first and second rolls are mounted in position for rotation about parallel axes so that the projections come into operative association with the first roll to perform the sealing action in a first position, and at a second position the entire second roll is not in operative association with the first roll. A stepper motor controls the rotation of the second roll. A second set of rolls is provided substantially immediately adjacent the discharge of the first set, and includes first and second rolls, and which are aligned with adhesive patterns of a business form that are perpendicular to the patterns sealed by the first set of rolls.