Patent ID: 6485571
Filing Date: 2002-11-26
Classification: D21G,Y10S

Abstract:
A coater for coating a fiber web, comprising:a coating applicator system configured for applying at least one coating to the fiber web, said coating applicator system including a plurality of control modules, each said control module controlling at least one of a plurality of chemical and physical adjustable input parameters; a plurality of sensors at least one sensor positioned upstream of said coating applicator system and at least one sensor positioned downstream of said coating applicator system, each said sensor associated with said coating applicator system to sense a physical characteristic of the fiber web and provide an output signal indicative thereof, at least one said sensor sensing one of opacity color, caliper and coating temperature; and a chemistry process controller coupled with each said sensor and each said control module to define a closed loop control system, said chemistry process controller controlling operation of each said control module.