Patent ID: 8082644

Claim:
A system for applying an adhesive backed pressure relief valve to packaging comprising: a liner carrying adhesive backed pressure relief valves; a series of rollers over which the liner carrying adhesive backed pressure relief valves passes in tension; a peeler bar over which the liner carrying adhesive backed pressure relief valves passes in tension; a biased, electromechanical micro-switch positioned above the liner carrying adhesive backed pressure relief valves and the peeler bar; a valve applicator unit proximate the peeler bar; the applicator unit including a punch shaft with a punch at one end and an applicator shaft with an applicator vacuum head mounted at one end; the punch shaft and the applicator shaft each being carried by the valve applicator unit for movement between a retracted position and an extended position; an anvil over which packaging, to which an adhesive backed pressure relief valve is to be applied, is positioned; and a liner retraction unit including clamping members that alternately maintain the liner stationary under tension and pull the liner under tension to advance the liner carrying adhesive backed pressure relief valves.