Patent ID: 7820247

Claim:
A process for coating a moving web, comprising: positionably adjusting ribs coupled to respective first or second head bodies to adjust a width of at least a first portion of a slit between a first and second head body of a curtain head; coupling packings to seal ends of the first and second head bodies and to define at least a portion of an end of the slit; and supplying a coating liquid through the first portion of the slit and through a second portion of the slit located outside of an edge of the moving web, whereby a coating liquid curtain extends across the web and beyond the edges of the web, wherein, due to slit width differences in a web travel direction between the first and second portions of the slit, a flow rate for the coating liquid through the second portion of the slit is greater than a flow rate for the coating liquid through the first portion of the slit.