Patent ID: 6652686
Filing Date: 2003-11-25
Classification: A61F

Abstract:
A process for registering a plurality of discrete components of a continuously moving second layer to reference marks on a continuously moving first layer comprising the steps of:providing a continuously moving first layer including a plurality of reference marks selectively positioned thereon; sensing a distance between two successive reference marks on the first layer and generating a signal in response to the sensed distance; providing a second layer having a plurality of continuously moving discrete components; sensing a distance between two successive components of the second layer and generating a signal in response to the sensed distance; synchronizing a feed rate of the components of the second layer to a feed rate of the reference marks on the first layer; aligning the components of the second layer a set distance to correspond with the reference marks on the first layer; superimposing the discrete components of the second layer onto the continuously moving first layer; providing a continuously moving third layer formed from a plurality of continuously moving individual components; applying a first adhesive intermittently to at least one continuously moving individual component of the continuously moving third layer by detecting a reference mark on the continuously moving first layer and, in response, turning on the adhesive applicator at a set time for a set duration; superimposing the continuously moving third layer onto the continuously moving first layer subsequent to superimposing the discrete components of the second layer onto the continuously first layer; and joining the at least one continuously moving individual component of the continuously moving third layer to at least one other continuously moving individual component.