PROFILING WET END STARCH APPLICATOR

摘要

A system for applying a suspension of uncooked starch particles in water to a web on a forming wire (14) by an applicator die (25) positioned transversely of the web with an internal manifold opening into a downwardly opening die slot through which material flows from the manifold as a falling curtain (30) onto the web. The die has a plurality of transversely spaced inlets leading into the manifold to define transversely spaced application zones. The suspended starch and dilution water are applied from the manifold through control valves (36 and 38) into the inlets whereby the concentration of the starch may be varied across the web to provide a desired strength profile to the dried web in accordance with a desired strength characteristic as measured at the dry end.